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Quelle jvmciCompilerToVM.cpp
Sprache: C
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/*
* Copyright (c) 2011, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "precompiled.hpp"
#include "classfile/classLoaderData.inline.hpp"
#include "classfile/javaClasses.inline.hpp"
#include "classfile/stringTable.hpp"
#include "classfile/symbolTable.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/vmClasses.hpp"
#include "code/scopeDesc.hpp"
#include "compiler/compileBroker.hpp"
#include "compiler/compilerEvent.hpp"
#include "compiler/disassembler.hpp"
#include "compiler/oopMap.hpp"
#include "interpreter/linkResolver.hpp"
#include "interpreter/bytecodeStream.hpp"
#include "jfr/jfrEvents.hpp"
#include "jvmci/jvmciCompilerToVM.hpp"
#include "jvmci/jvmciCodeInstaller.hpp"
#include "jvmci/jvmciRuntime.hpp"
#include "logging/log.hpp"
#include "logging/logTag.hpp"
#include "memory/oopFactory.hpp"
#include "memory/universe.hpp"
#include "oops/constantPool.inline.hpp"
#include "oops/instanceMirrorKlass.hpp"
#include "oops/instanceKlass.inline.hpp"
#include "oops/method.inline.hpp"
#include "oops/typeArrayOop.inline.hpp"
#include "prims/jvmtiExport.hpp"
#include "prims/methodHandles.hpp"
#include "prims/nativeLookup.hpp"
#include "runtime/atomic.hpp"
#include "runtime/deoptimization.hpp"
#include "runtime/fieldDescriptor.inline.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/interfaceSupport.inline.hpp"
#include "runtime/jniHandles.inline.hpp"
#include "runtime/reflectionUtils.hpp"
#include "runtime/stackFrameStream.inline.hpp"
#include "runtime/timerTrace.hpp"
#include "runtime/vframe_hp.hpp"
#include "runtime/vframe.inline.hpp"
#if INCLUDE_JFR
#include "jfr/jfr.hpp"
#endif
JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) {
_thread = thread;
_klass = klass;
if (klass != NULL) {
_holder = Handle(_thread, klass->klass_holder());
}
}
JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) {
_klass = klass;
if (klass != NULL) {
_holder = Handle(_thread, klass->klass_holder());
}
return *this;
}
static void requireInHotSpot(const char* caller, JVMCI_TRAPS) {
if (!JVMCIENV->is_hotspot()) {
JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller));
}
}
class JVMCITraceMark : public StackObj {
const char* _msg;
public:
JVMCITraceMark(const char* msg) {
_msg = msg;
JVMCI_event_2("Enter %s", _msg);
}
~JVMCITraceMark() {
JVMCI_event_2(" Exit %s", _msg);
}
};
Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) {
assert(_index < _args->length(), "out of bounds");
oop arg=((objArrayOop) (_args))->obj_at(_index++);
assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
return Handle(Thread::current(), arg);
}
// Bring the JVMCI compiler thread into the VM state.
#define JVMCI_VM_ENTRY_MARK \
MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread)); \
ThreadInVMfromNative __tiv(thread); \
HandleMarkCleaner __hm(thread); \
JavaThread* THREAD = thread; \
debug_only(VMNativeEntryWrapper __vew;)
// Native method block that transitions current thread to '_thread_in_vm'.
#define C2V_BLOCK(result_type, name, signature) \
JVMCI_VM_ENTRY_MARK; \
ResourceMark rm; \
JNI_JVMCIENV(JVMCI::compilation_tick(thread), env);
static JavaThread* get_current_thread(bool allow_null=true) {
Thread* thread = Thread::current_or_null_safe();
if (thread == NULL) {
assert(allow_null, "npe");
return NULL;
}
return JavaThread::cast(thread);
}
// Entry to native method implementation that transitions
// current thread to '_thread_in_vm'.
#define C2V_VMENTRY(result_type, name, signature) \
JNIEXPORT result_type JNICALL c2v_ ## name signature { \
JavaThread* thread = get_current_thread(); \
if (thread == NULL) { \
env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
return; \
} \
C2V_BLOCK(result_type, name, signature) \
JVMCITraceMark jtm("CompilerToVM::" #name);
#define C2V_VMENTRY_(result_type, name, signature, result) \
JNIEXPORT result_type JNICALL c2v_ ## name signature { \
JavaThread* thread = get_current_thread(); \
if (thread == NULL) { \
env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
return result; \
} \
C2V_BLOCK(result_type, name, signature) \
JVMCITraceMark jtm("CompilerToVM::" #name);
#define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, NULL)
#define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0)
// Entry to native method implementation that does not transition
// current thread to '_thread_in_vm'.
#define C2V_VMENTRY_PREFIX(result_type, name, signature) \
JNIEXPORT result_type JNICALL c2v_ ## name signature { \
JavaThread* thread = get_current_thread();
#define C2V_END }
#define JNI_THROW(caller, name, msg) do { \
jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
if (__throw_res != JNI_OK) { \
tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
} \
return; \
} while (0);
#define JNI_THROW_(caller, name, msg, result) do { \
jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
if (__throw_res != JNI_OK) { \
tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
} \
return result; \
} while (0)
jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS);
C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env))
jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL);
return config;
}
C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle))
#define RETURN_BOXED_LONG(value) jvalue p; p.j = (jlong) (value); JVMCIObject box = JVMCIENV->create_box(T_LONG, &p, JVMCI_CHECK_NULL); return box.as_jobject();
#define RETURN_BOXED_DOUBLE(value) jvalue p; p.d = (jdouble) (value); JVMCIObject box = JVMCIENV->create_box(T_DOUBLE, &p, JVMCI_CHECK_NULL); return box.as_jobject();
JVMCIObject name = JVMCIENV->wrap(name_handle);
if (name.is_null()) {
JVMCI_THROW_NULL(NullPointerException);
}
const char* cstring = JVMCIENV->as_utf8_string(name);
const JVMFlag* flag = JVMFlag::find_declared_flag(cstring);
if (flag == NULL) {
return c2vm;
}
if (flag->is_bool()) {
jvalue prim;
prim.z = flag->get_bool();
JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(box);
} else if (flag->is_ccstr()) {
JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(value);
} else if (flag->is_intx()) {
RETURN_BOXED_LONG(flag->get_intx());
} else if (flag->is_int()) {
RETURN_BOXED_LONG(flag->get_int());
} else if (flag->is_uint()) {
RETURN_BOXED_LONG(flag->get_uint());
} else if (flag->is_uint64_t()) {
RETURN_BOXED_LONG(flag->get_uint64_t());
} else if (flag->is_size_t()) {
RETURN_BOXED_LONG(flag->get_size_t());
} else if (flag->is_uintx()) {
RETURN_BOXED_LONG(flag->get_uintx());
} else if (flag->is_double()) {
RETURN_BOXED_DOUBLE(flag->get_double());
} else {
JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string());
}
#undef RETURN_BOXED_LONG
#undef RETURN_BOXED_DOUBLE
C2V_END
// Macros for argument pairs representing a wrapper object and its wrapped VM pointer
#define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer
#define UNPACK_PAIR(type, name) ((type*) name ## _pointer)
C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
int code_size = method->code_size();
jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size);
guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten");
// iterate over all bytecodes and replace non-Java bytecodes
for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) {
Bytecodes::Code code = s.code();
Bytecodes::Code raw_code = s.raw_code();
int bci = s.bci();
int len = s.instruction_size();
// Restore original byte code.
reconstituted_code[bci] = (jbyte) (s.is_wide()? Bytecodes::_wide : code);
if (len > 1) {
memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1);
}
if (len > 1) {
// Restore the big-endian constant pool indexes.
// Cf. Rewriter::scan_method
switch (code) {
case Bytecodes::_getstatic:
case Bytecodes::_putstatic:
case Bytecodes::_getfield:
case Bytecodes::_putfield:
case Bytecodes::_invokevirtual:
case Bytecodes::_invokespecial:
case Bytecodes::_invokestatic:
case Bytecodes::_invokeinterface:
case Bytecodes::_invokehandle: {
int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
break;
}
case Bytecodes::_invokedynamic: {
int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1));
Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index);
break;
}
default:
break;
}
// Not all ldc byte code are rewritten.
switch (raw_code) {
case Bytecodes::_fast_aldc: {
int cpc_index = reconstituted_code[bci + 1] & 0xff;
int cp_index = method->constants()->object_to_cp_index(cpc_index);
assert(cp_index < method->constants()->length(), "sanity check");
reconstituted_code[bci + 1] = (jbyte) cp_index;
break;
}
case Bytecodes::_fast_aldc_w: {
int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
int cp_index = method->constants()->object_to_cp_index(cpc_index);
assert(cp_index < method->constants()->length(), "sanity check");
Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
break;
}
default:
break;
}
}
}
JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size);
return JVMCIENV->get_jbyteArray(result);
C2V_END
C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
return method->exception_table_length();
C2V_END
C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
if (method->exception_table_length() == 0) {
return 0L;
}
return (jlong) (address) method->exception_table_start();
C2V_END
C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle))
requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL);
oop executable = JNIHandles::resolve(executable_handle);
oop mirror = NULL;
int slot = 0;
if (executable->klass() == vmClasses::reflect_Constructor_klass()) {
mirror = java_lang_reflect_Constructor::clazz(executable);
slot = java_lang_reflect_Constructor::slot(executable);
} else {
assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type");
mirror = java_lang_reflect_Method::clazz(executable);
slot = java_lang_reflect_Method::slot(executable);
}
Klass* holder = java_lang_Class::as_Klass(mirror);
methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot));
JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset))
Method* method = NULL;
JVMCIObject base_object = JVMCIENV->wrap(base);
if (base_object.is_null()) {
method = *((Method**)(offset));
} else {
Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
if (obj->is_a(vmClasses::ResolvedMethodName_klass())) {
method = (Method*) (intptr_t) obj->long_field(offset);
} else {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name()));
}
}
if (method == NULL) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object)));
}
assert (method->is_method(), "invalid read");
JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass))
ConstantPool* cp = NULL;
if (UNPACK_PAIR(address, klass_or_method) == 0) {
JVMCI_THROW_NULL(NullPointerException);
}
if (!is_klass) {
cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants();
} else {
cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants();
}
JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed))
JVMCIKlassHandle klass(THREAD);
JVMCIObject base_object = JVMCIENV->wrap(base);
jlong base_address = 0;
if (base_object.is_non_null() && offset == oopDesc::klass_offset_in_bytes()) {
if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
klass = base_oop->klass();
} else {
assert(false, "What types are we actually expecting here?");
}
} else if (!compressed) {
if (base_object.is_non_null()) {
if (JVMCIENV->isa_HotSpotResolvedJavaMethodImpl(base_object)) {
base_address = (intptr_t) JVMCIENV->asMethod(base_object);
} else if (JVMCIENV->isa_HotSpotConstantPool(base_object)) {
base_address = (intptr_t) JVMCIENV->asConstantPool(base_object);
} else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) {
base_address = (intptr_t) JVMCIENV->asKlass(base_object);
} else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
if (base_oop->is_a(vmClasses::Class_klass())) {
base_address = cast_from_oop<jlong>(base_oop());
}
}
if (base_address == 0) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException,
err_msg("Unexpected arguments: %s " JLONG_FORMAT " %s", JVMCIENV->klass_name(base_object), offset, compressed ? "true" : "false"));
}
}
klass = *((Klass**) (intptr_t) (base_address + offset));
} else {
JVMCI_THROW_MSG_NULL(IllegalArgumentException,
err_msg("Unexpected arguments: %s " JLONG_FORMAT " %s",
base_object.is_non_null() ? JVMCIENV->klass_name(base_object) : "null",
offset, compressed ? "true" : "false"));
}
assert (klass == NULL || klass->is_klass(), "invalid read");
JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
methodHandle method (THREAD, UNPACK_PAIR(Method, method));
InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
if (holder->is_interface()) {
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name()));
}
if (method->can_be_statically_bound()) {
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Effectively static method %s.%s should be handled in Java code", method->method_holder()->external_name(), method->external_name()));
}
methodHandle ucm;
{
MutexLocker locker(Compile_lock);
ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method()));
}
JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (!klass->is_interface()) {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("Expected interface type, got %s", klass->external_name()));
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
JVMCIKlassHandle handle(THREAD);
{
// Need Compile_lock around implementor()
MutexLocker locker(Compile_lock);
handle = iklass->implementor();
}
JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(implementor);
C2V_END
C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
return method->is_ignored_by_security_stack_walk();
C2V_END
C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
// Skip redefined methods
if (method->is_old()) {
return false;
}
return !method->is_not_compilable(CompLevel_full_optimization);
C2V_END
C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method (THREAD, UNPACK_PAIR(Method, method));
return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline();
C2V_END
C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method (THREAD, UNPACK_PAIR(Method, method));
return CompilerOracle::should_inline(method) || method->force_inline();
C2V_END
C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jboolean resolve))
JVMCIObject name = JVMCIENV->wrap(jname);
const char* str = JVMCIENV->as_utf8_string(name);
TempNewSymbol class_name = SymbolTable::new_symbol(str);
if (class_name->utf8_length() <= 1) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Primitive type %s should be handled in Java code", class_name->as_C_string()));
}
JVMCIKlassHandle resolved_klass(THREAD);
Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass);
Handle class_loader;
Handle protection_domain;
if (accessing_klass != nullptr) {
class_loader = Handle(THREAD, accessing_klass->class_loader());
protection_domain = Handle(THREAD, accessing_klass->protection_domain());
} else {
// Use the System class loader
class_loader = Handle(THREAD, SystemDictionary::java_system_loader());
JVMCIENV->runtime()->initialize(JVMCI_CHECK_NULL);
}
if (resolve) {
resolved_klass = SystemDictionary::resolve_or_null(class_name, class_loader, protection_domain, CHECK_NULL);
if (resolved_klass == nullptr) {
JVMCI_THROW_MSG_NULL(ClassNotFoundException, str);
}
} else {
if (Signature::has_envelope(class_name)) {
// This is a name from a signature. Strip off the trimmings.
// Call recursive to keep scope of strippedsym.
TempNewSymbol strippedsym = Signature::strip_envelope(class_name);
resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
class_loader,
protection_domain);
} else if (Signature::is_array(class_name)) {
SignatureStream ss(class_name, false);
int ndim = ss.skip_array_prefix();
if (ss.type() == T_OBJECT) {
Symbol* strippedsym = ss.as_symbol();
resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
class_loader,
protection_domain);
if (!resolved_klass.is_null()) {
resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL);
}
} else {
resolved_klass = TypeArrayKlass::cast(Universe::typeArrayKlassObj(ss.type()))->array_klass(ndim, CHECK_NULL);
}
} else {
resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name,
class_loader,
protection_domain);
}
}
JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass)))
JVMCIKlassHandle array_klass(THREAD);
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
if (type == T_VOID) {
return nullptr;
}
array_klass = Universe::typeArrayKlassObj(type);
if (array_klass == nullptr) {
JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type)));
}
} else {
array_klass = klass->array_klass(CHECK_NULL);
}
JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror))
requireInHotSpot("lookupClass", JVMCI_CHECK_NULL);
if (mirror == nullptr) {
return nullptr;
}
JVMCIKlassHandle klass(THREAD);
klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
if (klass == nullptr) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported");
}
JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
constantTag tag = cp->tag_at(index);
if (!tag.is_string()) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
}
oop obj = cp->uncached_string_at(index, CHECK_NULL);
return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
C2V_END
C2V_VMENTRY_NULL(jobject, resolvePossiblyCachedConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
oop obj = cp->resolve_possibly_cached_constant_at(index, CHECK_NULL);
constantTag tag = cp->tag_at(index);
if (tag.is_dynamic_constant() || tag.is_dynamic_constant_in_error()) {
if (obj == Universe::the_null_sentinel()) {
return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
}
BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(index));
if (!is_reference_type(bt)) {
if (!is_java_primitive(bt)) {
return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
}
// Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant)
jvalue value;
jlong raw_value;
jchar type_char;
BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
assert(bt2 == bt, "");
switch (bt2) {
case T_LONG: type_char = 'J'; raw_value = value.j; break;
case T_DOUBLE: type_char = 'D'; raw_value = value.j; break;
case T_FLOAT: type_char = 'F'; raw_value = value.i; break;
case T_INT: type_char = 'I'; raw_value = value.i; break;
case T_SHORT: type_char = 'S'; raw_value = value.s; break;
case T_BYTE: type_char = 'B'; raw_value = value.b; break;
case T_CHAR: type_char = 'C'; raw_value = value.c; break;
case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break;
default: return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
}
JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
}
return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
C2V_END
C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
constantTag tag = cp->tag_at(index);
bool is_indy = tag.is_invoke_dynamic();
bool is_condy = tag.is_dynamic_constant();
if (!(is_condy || is_indy)) {
JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
}
// Resolve the bootstrap specifier, its name, type, and static arguments
BootstrapInfo bootstrap_specifier(cp, index);
Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL);
// call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle
// to get a DirectMethodHandle from which we can then extract a Method*
JavaValue result(T_OBJECT);
JavaCalls::call_virtual(&result,
bsm,
vmClasses::MethodHandle_klass(),
vmSymbols::asFixedArity_name(),
vmSymbols::asFixedArity_signature(),
CHECK_NULL);
bsm = Handle(THREAD, result.get_oop());
// Check assumption about getting a DirectMethodHandle
if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) {
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name()));
}
// Create return array describing the bootstrap method invocation (BSMI)
JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL);
// Extract Method* and wrap it in a ResolvedJavaMethod
Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm()));
JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 0, bsmi_method);
JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 1, bsmi_name);
Handle type_arg = bootstrap_specifier.type_arg();
JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg());
JVMCIENV->put_object_at(bsmi, 2, bsmi_type);
Handle arg_values = bootstrap_specifier.arg_values();
if (arg_values.not_null()) {
if (!arg_values->is_array()) {
JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values()));
} else if (arg_values->is_objArray()) {
objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values());
int len = args_array->length();
JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 3, arguments);
for (int i = 0; i < len; i++) {
oop x = args_array->obj_at(i);
if (x != nullptr) {
JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x));
} else {
JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER());
}
}
} else if (arg_values->is_typeArray()) {
typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values());
JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 3, arguments);
for (int i = 0; i < bsci->length(); i++) {
JVMCIENV->put_int_at(arguments, i, bsci->int_at(i));
}
}
}
return JVMCIENV->get_jobjectArray(bsmi);
C2V_END
C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
return cp->name_and_type_ref_index_at(index);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(sym);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(sym);
C2V_END
C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
return cp->klass_ref_index_at(index);
C2V_END
C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
Klass* klass = cp->klass_at(index, CHECK_NULL);
JVMCIKlassHandle resolved_klass(THREAD, klass);
if (resolved_klass->is_instance_klass()) {
InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL);
if (!InstanceKlass::cast(resolved_klass())->is_linked()) {
// link_class() should not return here if there is an issue.
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name()));
}
}
JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(klassObject);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
Klass* loading_klass = cp->pool_holder();
bool is_accessible = false;
JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass));
Symbol* symbol = nullptr;
if (klass.is_null()) {
constantTag tag = cp->tag_at(index);
if (tag.is_klass()) {
// The klass has been inserted into the constant pool
// very recently.
klass = cp->resolved_klass_at(index);
} else if (tag.is_symbol()) {
symbol = cp->symbol_at(index);
} else {
assert(cp->tag_at(index).is_unresolved_klass(), "wrong tag");
symbol = cp->klass_name_at(index);
}
}
JVMCIObject result;
if (!klass.is_null()) {
result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
} else {
result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL);
}
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, index);
return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop));
C2V_END
C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller)))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
methodHandle caller(THREAD, UNPACK_PAIR(Method, caller));
InstanceKlass* pool_holder = cp->pool_holder();
Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder));
JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);)
JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jint, constantPoolRemapInstructionOperandFromCache, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
return cp->remap_instruction_operand_from_cache(index);
C2V_END
C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF);
fieldDescriptor fd;
methodHandle mh(THREAD, UNPACK_PAIR(Method, method));
LinkInfo link_info(cp, index, mh, CHECK_NULL);
LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), false, CHECK_NULL);
JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle);
if (info.is_null() || JVMCIENV->get_length(info) != 3) {
JVMCI_ERROR_NULL("info must not be null and have a length of 3");
}
JVMCIENV->put_int_at(info, 0, fd.access_flags().as_int());
JVMCIENV->put_int_at(info, 1, fd.offset());
JVMCIENV->put_int_at(info, 2, fd.index());
JVMCIKlassHandle handle(THREAD, fd.field_holder());
JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(field_holder);
C2V_END
C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
Klass* klass = UNPACK_PAIR(Klass, klass);
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
InstanceKlass* holder = method->method_holder();
if (klass->is_interface()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name()));
}
if (!holder->is_interface()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Method %s is not held by an interface, this case should be handled in Java code", method->name_and_sig_as_C_string()));
}
if (!klass->is_instance_klass()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
}
if (!InstanceKlass::cast(klass)->is_linked()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name()));
}
if (!klass->is_subtype_of(holder)) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name()));
}
return LinkResolver::vtable_index_of_interface_method(klass, method);
C2V_END
C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller)))
Klass* recv_klass = UNPACK_PAIR(Klass, receiver);
Klass* caller_klass = UNPACK_PAIR(Klass, caller);
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
Klass* resolved = method->method_holder();
Symbol* h_name = method->name();
Symbol* h_signature = method->signature();
if (MethodHandles::is_signature_polymorphic_method(method())) {
// Signature polymorphic methods are already resolved, JVMCI just returns NULL in this case.
return nullptr;
}
if (method->name() == vmSymbols::clone_name() &&
resolved == vmClasses::Object_klass() &&
recv_klass->is_array_klass()) {
// Resolution of the clone method on arrays always returns Object.clone even though that method
// has protected access. There's some trickery in the access checking to make this all work out
// so it's necessary to pass in the array class as the resolved class to properly trigger this.
// Otherwise it's impossible to resolve the array clone methods through JVMCI. See
// LinkResolver::check_method_accessability for the matching logic.
resolved = recv_klass;
}
LinkInfo link_info(resolved, h_name, h_signature, caller_klass);
Method* m = nullptr;
// Only do exact lookup if receiver klass has been linked. Otherwise,
// the vtable has not been setup, and the LinkResolver will fail.
if (recv_klass->is_array_klass() ||
(InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) {
if (resolved->is_interface()) {
m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info);
} else {
m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info);
}
}
if (m == nullptr) {
// Return NULL if there was a problem with lookup (uninitialized class, etc.)
return nullptr;
}
JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
assert(klass != nullptr, "method must not be called for primitive types");
if (!klass->is_instance_klass()) {
return false;
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
return Dependencies::find_finalizable_subclass(iklass) != nullptr;
C2V_END
C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (!klass->is_instance_klass()) {
return nullptr;
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
methodHandle clinit(THREAD, iklass->class_initializer());
JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr))
address target_addr = (address) addr;
if (target_addr != 0x0) {
int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int));
int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int));
return MAX2(ABS(off_low), ABS(off_high));
}
return -1;
C2V_END
C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
method->set_not_c1_compilable();
method->set_not_c2_compilable();
method->set_dont_inline(true);
C2V_END
C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject))
int flags = 0;
#ifndef PRODUCT
flags |= 0x0001; // VM will install block comments
flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set
#endif
if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
// VM needs to track method dependencies
flags |= 0x0002;
}
return flags;
C2V_END
C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject,
jlong compiled_code_buffer,
jlong serialization_ns,
bool with_type_info,
jobject compiled_code,
jobjectArray object_pool,
jobject installed_code,
jlong failed_speculations_address,
jbyteArray speculations_obj))
HandleMark hm(THREAD);
JNIHandleMark jni_hm(thread);
JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code);
objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr);
CodeBlob* cb = NULL;
JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code);
JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj);
int speculations_len = JVMCIENV->get_length(speculations_handle);
char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len);
JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len);
JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR);
JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread());
elapsedTimer *timer = stats->timer();
timer->add_nanoseconds(serialization_ns);
TraceTime install_time("installCode", timer);
CodeInstaller installer(JVMCIENV);
JVMCI::CodeInstallResult result = installer.install(compiler,
compiled_code_buffer,
with_type_info,
compiled_code_handle,
object_pool_handle,
cb,
installed_code_handle,
(FailedSpeculation**)(address) failed_speculations_address,
speculations,
speculations_len,
JVMCI_CHECK_0);
if (PrintCodeCacheOnCompilation) {
stringStream s;
// Dump code cache into a buffer before locking the tty,
{
MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
CodeCache::print_summary(&s, false);
}
ttyLocker ttyl;
tty->print_raw_cr(s.freeze());
}
if (result != JVMCI::ok) {
assert(cb == NULL, "should be");
} else {
stats->on_install(cb);
if (installed_code_handle.is_non_null()) {
if (cb->is_nmethod()) {
assert(JVMCIENV->isa_HotSpotNmethod(installed_code_handle), "wrong type");
// Clear the link to an old nmethod first
JVMCIObject nmethod_mirror = installed_code_handle;
JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, true, JVMCI_CHECK_0);
} else {
assert(JVMCIENV->isa_InstalledCode(installed_code_handle), "wrong type");
}
// Initialize the link to the new code blob
JVMCIENV->initialize_installed_code(installed_code_handle, cb, JVMCI_CHECK_0);
}
}
return result;
C2V_END
C2V_VMENTRY(void, resetCompilationStatistics, (JNIEnv* env, jobject))
JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK);
CompilerStatistics* stats = compiler->stats();
stats->_standard.reset();
stats->_osr.reset();
C2V_END
C2V_VMENTRY_NULL(jobject, disassembleCodeBlob, (JNIEnv* env, jobject, jobject installedCode))
HandleMark hm(THREAD);
if (installedCode == NULL) {
JVMCI_THROW_MSG_NULL(NullPointerException, "installedCode is null");
}
JVMCIObject installedCodeObject = JVMCIENV->wrap(installedCode);
CodeBlob* cb = JVMCIENV->get_code_blob(installedCodeObject);
if (cb == NULL) {
return NULL;
}
// We don't want the stringStream buffer to resize during disassembly as it
// uses scoped resource memory. If a nested function called during disassembly uses
// a ResourceMark and the buffer expands within the scope of the mark,
// the buffer becomes garbage when that scope is exited. Experience shows that
// the disassembled code is typically about 10x the code size so a fixed buffer
// sized to 20x code size plus a fixed amount for header info should be sufficient.
int bufferSize = cb->code_size() * 20 + 1024;
char* buffer = NEW_RESOURCE_ARRAY(char, bufferSize);
stringStream st(buffer, bufferSize);
Disassembler::decode(cb, &st);
if (st.size() <= 0) {
return NULL;
}
JVMCIObject result = JVMCIENV->create_string(st.as_string(), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, getStackTraceElement, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int bci))
HandleMark hm(THREAD);
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
JVMCIObject element = JVMCIENV->new_StackTraceElement(method, bci, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(element);
C2V_END
C2V_VMENTRY_NULL(jobject, executeHotSpotNmethod, (JNIEnv* env, jobject, jobject args, jobject hs_nmethod))
// The incoming arguments array would have to contain JavaConstants instead of regular objects
// and the return value would have to be wrapped as a JavaConstant.
requireInHotSpot("executeHotSpotNmethod", JVMCI_CHECK_NULL);
HandleMark hm(THREAD);
JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
nmethod* nm = JVMCIENV->get_nmethod(nmethod_mirror);
if (nm == NULL || !nm->is_in_use()) {
JVMCI_THROW_NULL(InvalidInstalledCodeException);
}
methodHandle mh(THREAD, nm->method());
Symbol* signature = mh->signature();
JavaCallArguments jca(mh->size_of_parameters());
JavaArgumentUnboxer jap(signature, &jca, (arrayOop) JNIHandles::resolve(args), mh->is_static());
JavaValue result(jap.return_type());
jca.set_alternative_target(Handle(THREAD, JNIHandles::resolve(nmethod_mirror.as_jobject())));
JavaCalls::call(&result, mh, &jca, CHECK_NULL);
if (jap.return_type() == T_VOID) {
return NULL;
} else if (is_reference_type(jap.return_type())) {
return JNIHandles::make_local(THREAD, result.get_oop());
} else {
jvalue *value = (jvalue *) result.get_value_addr();
// Narrow the value down if required (Important on big endian machines)
switch (jap.return_type()) {
case T_BOOLEAN:
value->z = (jboolean) value->i;
break;
case T_BYTE:
value->b = (jbyte) value->i;
break;
case T_CHAR:
value->c = (jchar) value->i;
break;
case T_SHORT:
value->s = (jshort) value->i;
break;
default:
break;
}
JVMCIObject o = JVMCIENV->create_box(jap.return_type(), value, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(o);
}
C2V_END
C2V_VMENTRY_NULL(jlongArray, getLineNumberTable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
if (!method->has_linenumber_table()) {
return NULL;
}
u2 num_entries = 0;
CompressedLineNumberReadStream streamForSize(method->compressed_linenumber_table());
while (streamForSize.read_pair()) {
num_entries++;
}
CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
JVMCIPrimitiveArray result = JVMCIENV->new_longArray(2 * num_entries, JVMCI_CHECK_NULL);
int i = 0;
jlong value;
while (stream.read_pair()) {
value = ((jlong) stream.bci());
JVMCIENV->put_long_at(result, i, value);
value = ((jlong) stream.line());
JVMCIENV->put_long_at(result, i + 1, value);
i += 2;
}
return (jlongArray) JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jlong, getLocalVariableTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
if (!method->has_localvariable_table()) {
return 0;
}
return (jlong) (address) method->localvariable_table_start();
C2V_END
C2V_VMENTRY_0(jint, getLocalVariableTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
return method->localvariable_table_length();
C2V_END
C2V_VMENTRY(void, reprofile, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
MethodCounters* mcs = method->method_counters();
if (mcs != NULL) {
mcs->clear_counters();
}
NOT_PRODUCT(method->set_compiled_invocation_count(0));
CompiledMethod* code = method->code();
if (code != NULL) {
code->make_not_entrant();
}
MethodData* method_data = method->method_data();
if (method_data == NULL) {
ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
method_data = MethodData::allocate(loader_data, method, CHECK);
method->set_method_data(method_data);
} else {
method_data->initialize();
}
C2V_END
C2V_VMENTRY(void, invalidateHotSpotNmethod, (JNIEnv* env, jobject, jobject hs_nmethod, jboolean deoptimize))
JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, deoptimize, JVMCI_CHECK);
C2V_END
C2V_VMENTRY_NULL(jlongArray, collectCounters, (JNIEnv* env, jobject))
// Returns a zero length array if counters aren't enabled
JVMCIPrimitiveArray array = JVMCIENV->new_longArray(JVMCICounterSize, JVMCI_CHECK_NULL);
if (JVMCICounterSize > 0) {
jlong* temp_array = NEW_RESOURCE_ARRAY(jlong, JVMCICounterSize);
JavaThread::collect_counters(temp_array, JVMCICounterSize);
JVMCIENV->copy_longs_from(temp_array, array, 0, JVMCICounterSize);
}
return (jlongArray) JVMCIENV->get_jobject(array);
C2V_END
C2V_VMENTRY_0(jint, getCountersSize, (JNIEnv* env, jobject))
return (jint) JVMCICounterSize;
C2V_END
C2V_VMENTRY_0(jboolean, setCountersSize, (JNIEnv* env, jobject, jint new_size))
return JavaThread::resize_all_jvmci_counters(new_size);
C2V_END
C2V_VMENTRY_0(jint, allocateCompileId, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci))
HandleMark hm(THREAD);
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
if (method.is_null()) {
JVMCI_THROW_0(NullPointerException);
}
if (entry_bci >= method->code_size() || entry_bci < -1) {
JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected bci %d", entry_bci));
}
return CompileBroker::assign_compile_id_unlocked(THREAD, method, entry_bci);
C2V_END
C2V_VMENTRY_0(jboolean, isMature, (JNIEnv* env, jobject, jlong method_data_pointer))
MethodData* mdo = (MethodData*) method_data_pointer;
return mdo != NULL && mdo->is_mature();
C2V_END
C2V_VMENTRY_0(jboolean, hasCompiledCodeForOSR, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci, int comp_level))
Method* method = UNPACK_PAIR(Method, method);
return method->lookup_osr_nmethod_for(entry_bci, comp_level, true) != NULL;
C2V_END
C2V_VMENTRY_NULL(jobject, getSymbol, (JNIEnv* env, jobject, jlong symbol))
JVMCIObject sym = JVMCIENV->create_string((Symbol*)(address)symbol, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(sym);
C2V_END
C2V_VMENTRY_NULL(jobject, getSignatureName, (JNIEnv* env, jobject, jlong klass_pointer))
Klass* klass = UNPACK_PAIR(Klass, klass);
JVMCIObject signature = JVMCIENV->create_string(klass->signature_name(), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(signature);
C2V_END
/*
* Used by matches() to convert a ResolvedJavaMethod[] to an array of Method*.
*/
GrowableArray<Method*>* init_resolved_methods(jobjectArray methods, JVMCIEnv* JVMCIENV) {
objArrayOop methods_oop = (objArrayOop) JNIHandles::resolve(methods);
GrowableArray<Method*>* resolved_methods = new GrowableArray<Method*>(methods_oop->length());
for (int i = 0; i < methods_oop->length(); i++) {
oop resolved = methods_oop->obj_at(i);
Method* resolved_method = NULL;
if (resolved->klass() == HotSpotJVMCI::HotSpotResolvedJavaMethodImpl::klass()) {
resolved_method = HotSpotJVMCI::asMethod(JVMCIENV, resolved);
}
resolved_methods->append(resolved_method);
}
return resolved_methods;
}
/*
* Used by c2v_iterateFrames to check if `method` matches one of the ResolvedJavaMethods in the `methods` array.
* The ResolvedJavaMethod[] array is converted to a Method* array that is then cached in the resolved_methods_ref in/out parameter.
* In case of a match, the matching ResolvedJavaMethod is returned in matched_jvmci_method_ref.
*/
bool matches(jobjectArray methods, Method* method, GrowableArray<Method*>** resolved_methods_ref, Handle* matched_jvmci_method_ref, Thread* THREAD, JVMCIEnv* JVMCIENV) {
GrowableArray<Method*>* resolved_methods = *resolved_methods_ref;
if (resolved_methods == NULL) {
resolved_methods = init_resolved_methods(methods, JVMCIENV);
*resolved_methods_ref = resolved_methods;
}
assert(method != NULL, "method should not be NULL");
assert(resolved_methods->length() == ((objArrayOop) JNIHandles::resolve(methods))->length(), "arrays must have the same length");
for (int i = 0; i < resolved_methods->length(); i++) {
Method* m = resolved_methods->at(i);
if (m == method) {
*matched_jvmci_method_ref = Handle(THREAD, ((objArrayOop) JNIHandles::resolve(methods))->obj_at(i));
return true;
}
}
return false;
}
/*
* Resolves an interface call to a concrete method handle.
*/
methodHandle resolve_interface_call(Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
CallInfo callinfo;
Handle receiver = args->receiver();
Klass* recvrKlass = receiver.is_null() ? (Klass*)NULL : receiver->klass();
LinkInfo link_info(spec_klass, name, signature);
LinkResolver::resolve_interface_call(
callinfo, receiver, recvrKlass, link_info, true, CHECK_(methodHandle()));
methodHandle method(THREAD, callinfo.selected_method());
assert(method.not_null(), "should have thrown exception");
return method;
}
/*
* Used by c2v_iterateFrames to make a new vframeStream at the given compiled frame id (stack pointer) and vframe id.
*/
void resync_vframestream_to_compiled_frame(vframeStream& vfst, intptr_t* stack_pointer, int vframe_id, JavaThread* thread, TRAPS) {
vfst = vframeStream(thread);
while (vfst.frame_id() != stack_pointer && !vfst.at_end()) {
vfst.next();
}
if (vfst.frame_id() != stack_pointer) {
THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "stack frame not found after deopt")
}
if (vfst.is_interpreted_frame()) {
THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "compiled stack frame expected")
}
while (vfst.vframe_id() != vframe_id) {
if (vfst.at_end()) {
THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "vframe not found after deopt")
}
vfst.next();
assert(!vfst.is_interpreted_frame(), "Wrong frame type");
}
}
/*
* Used by c2v_iterateFrames. Returns an array of any unallocated scope objects or NULL if none.
*/
GrowableArray<ScopeValue*>* get_unallocated_objects_or_null(GrowableArray<ScopeValue*>* scope_objects) {
GrowableArray<ScopeValue*>* unallocated = NULL;
for (int i = 0; i < scope_objects->length(); i++) {
ObjectValue* sv = (ObjectValue*) scope_objects->at(i);
if (sv->value().is_null()) {
if (unallocated == NULL) {
unallocated = new GrowableArray<ScopeValue*>(scope_objects->length());
}
unallocated->append(sv);
}
}
return unallocated;
}
C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, jobjectArray initial_methods, jobjectArray match_methods, jint initialSkip, jobject visitor_handle))
if (!thread->has_last_Java_frame()) {
return NULL;
}
Handle visitor(THREAD, JNIHandles::resolve_non_null(visitor_handle));
requireInHotSpot("iterateFrames", JVMCI_CHECK_NULL);
HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL);
vframeStream vfst(thread);
jobjectArray methods = initial_methods;
methodHandle visitor_method;
GrowableArray<Method*>* resolved_methods = NULL;
while (!vfst.at_end()) { // frame loop
bool realloc_called = false;
intptr_t* frame_id = vfst.frame_id();
// Previous compiledVFrame of this frame; use with at_scope() to reuse scope object pool.
compiledVFrame* prev_cvf = NULL;
for (; !vfst.at_end() && vfst.frame_id() == frame_id; vfst.next()) { // vframe loop
int frame_number = 0;
Method *method = vfst.method();
int bci = vfst.bci();
Handle matched_jvmci_method;
if (methods == NULL || matches(methods, method, &resolved_methods, &matched_jvmci_method, THREAD, JVMCIENV)) {
if (initialSkip > 0) {
initialSkip--;
continue;
}
javaVFrame* vf;
if (prev_cvf != NULL && prev_cvf->frame_pointer()->id() == frame_id) {
assert(prev_cvf->is_compiled_frame(), "expected compiled Java frame");
vf = prev_cvf->at_scope(vfst.decode_offset(), vfst.vframe_id());
} else {
vf = vfst.asJavaVFrame();
}
StackValueCollection* locals = NULL;
typeArrayHandle localIsVirtual_h;
if (vf->is_compiled_frame()) {
// compiled method frame
compiledVFrame* cvf = compiledVFrame::cast(vf);
ScopeDesc* scope = cvf->scope();
// native wrappers do not have a scope
if (scope != NULL && scope->objects() != NULL) {
prev_cvf = cvf;
GrowableArray<ScopeValue*>* objects = NULL;
if (!realloc_called) {
objects = scope->objects();
} else {
// some object might already have been re-allocated, only reallocate the non-allocated ones
objects = get_unallocated_objects_or_null(scope->objects());
}
if (objects != NULL) {
RegisterMap reg_map(vf->register_map());
bool realloc_failures = Deoptimization::realloc_objects(thread, vf->frame_pointer(), ®_map, objects, CHECK_NULL);
Deoptimization::reassign_fields(vf->frame_pointer(), ®_map, objects, realloc_failures, false);
realloc_called = true;
}
GrowableArray<ScopeValue*>* local_values = scope->locals();
for (int i = 0; i < local_values->length(); i++) {
ScopeValue* value = local_values->at(i);
if (value->is_object()) {
if (localIsVirtual_h.is_null()) {
typeArrayOop array_oop = oopFactory::new_boolArray(local_values->length(), CHECK_NULL);
localIsVirtual_h = typeArrayHandle(THREAD, array_oop);
}
localIsVirtual_h->bool_at_put(i, true);
}
}
}
locals = cvf->locals();
frame_number = cvf->vframe_id();
} else {
// interpreted method frame
interpretedVFrame* ivf = interpretedVFrame::cast(vf);
locals = ivf->locals();
}
assert(bci == vf->bci(), "wrong bci");
assert(method == vf->method(), "wrong method");
Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL);
HotSpotJVMCI::HotSpotStackFrameReference::set_bci(JVMCIENV, frame_reference(), bci);
if (matched_jvmci_method.is_null()) {
methodHandle mh(THREAD, method);
JVMCIObject jvmci_method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
matched_jvmci_method = Handle(THREAD, JNIHandles::resolve(jvmci_method.as_jobject()));
}
HotSpotJVMCI::HotSpotStackFrameReference::set_method(JVMCIENV, frame_reference(), matched_jvmci_method());
HotSpotJVMCI::HotSpotStackFrameReference::set_localIsVirtual(JVMCIENV, frame_reference(), localIsVirtual_h());
HotSpotJVMCI::HotSpotStackFrameReference::set_compilerToVM(JVMCIENV, frame_reference(), JNIHandles::resolve(compilerToVM));
HotSpotJVMCI::HotSpotStackFrameReference::set_stackPointer(JVMCIENV, frame_reference(), (jlong) frame_id);
HotSpotJVMCI::HotSpotStackFrameReference::set_frameNumber(JVMCIENV, frame_reference(), frame_number);
// initialize the locals array
objArrayOop array_oop = oopFactory::new_objectArray(locals->size(), CHECK_NULL);
objArrayHandle array(THREAD, array_oop);
for (int i = 0; i < locals->size(); i++) {
StackValue* var = locals->at(i);
if (var->type() == T_OBJECT) {
array->obj_at_put(i, locals->at(i)->get_obj()());
}
}
HotSpotJVMCI::HotSpotStackFrameReference::set_locals(JVMCIENV, frame_reference(), array());
HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, frame_reference(), JNI_FALSE);
JavaValue result(T_OBJECT);
JavaCallArguments args(visitor);
if (visitor_method.is_null()) {
visitor_method = resolve_interface_call(HotSpotJVMCI::InspectedFrameVisitor::klass(), vmSymbols::visitFrame_name(), vmSymbols::visitFrame_signature(), &args, CHECK_NULL);
}
args.push_oop(frame_reference);
JavaCalls::call(&result, visitor_method, &args, CHECK_NULL);
if (result.get_oop() != NULL) {
return JNIHandles::make_local(thread, result.get_oop());
}
if (methods == initial_methods) {
methods = match_methods;
if (resolved_methods != NULL && JNIHandles::resolve(match_methods) != JNIHandles::resolve(initial_methods)) {
resolved_methods = NULL;
}
}
assert(initialSkip == 0, "There should be no match before initialSkip == 0");
if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) {
// the frame has been deoptimized, we need to re-synchronize the frame and vframe
prev_cvf = NULL;
intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference());
resync_vframestream_to_compiled_frame(vfst, stack_pointer, frame_number, thread, CHECK_NULL);
}
}
} // end of vframe loop
} // end of frame loop
// the end was reached without finding a matching method
return NULL;
C2V_END
C2V_VMENTRY(void, resolveInvokeDynamicInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
CallInfo callInfo;
LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokedynamic, CHECK);
ConstantPoolCacheEntry* cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index);
cp_cache_entry->set_dynamic_call(cp, callInfo);
C2V_END
C2V_VMENTRY(void, resolveInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
Klass* holder = cp->klass_ref_at(index, CHECK);
Symbol* name = cp->name_ref_at(index);
if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
CallInfo callInfo;
LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokehandle, CHECK);
ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
cp_cache_entry->set_method_handle(cp, callInfo);
}
C2V_END
C2V_VMENTRY_0(jint, isResolvedInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
if (cp_cache_entry->is_resolved(Bytecodes::_invokehandle)) {
// MethodHandle.invoke* --> LambdaForm?
ResourceMark rm;
LinkInfo link_info(cp, index, CATCH);
Klass* resolved_klass = link_info.resolved_klass();
Symbol* name_sym = cp->name_ref_at(index);
vmassert(MethodHandles::is_method_handle_invoke_name(resolved_klass, name_sym), "!");
vmassert(MethodHandles::is_signature_polymorphic_name(resolved_klass, name_sym), "!");
methodHandle adapter_method(THREAD, cp_cache_entry->f1_as_method());
methodHandle resolved_method(adapter_method);
// Can we treat it as a regular invokevirtual?
if (resolved_method->method_holder() == resolved_klass && resolved_method->name() == name_sym) {
vmassert(!resolved_method->is_static(),"!");
vmassert(MethodHandles::is_signature_polymorphic_method(resolved_method()),"!");
vmassert(!MethodHandles::is_signature_polymorphic_static(resolved_method->intrinsic_id()), "!");
vmassert(cp_cache_entry->appendix_if_resolved(cp) == NULL, "!");
methodHandle m(THREAD, LinkResolver::linktime_resolve_virtual_method_or_null(link_info));
vmassert(m == resolved_method, "!!");
return -1;
}
return Bytecodes::_invokevirtual;
}
if (cp_cache_entry->is_resolved(Bytecodes::_invokedynamic)) {
return Bytecodes::_invokedynamic;
}
return -1;
C2V_END
C2V_VMENTRY_NULL(jobject, getSignaturePolymorphicHolders, (JNIEnv* env, jobject))
JVMCIObjectArray holders = JVMCIENV->new_String_array(2, JVMCI_CHECK_NULL);
JVMCIObject mh = JVMCIENV->create_string("Ljava/lang/invoke/MethodHandle;", JVMCI_CHECK_NULL);
JVMCIObject vh = JVMCIENV->create_string("Ljava/lang/invoke/VarHandle;", JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(holders, 0, mh);
JVMCIENV->put_object_at(holders, 1, vh);
return JVMCIENV->get_jobject(holders);
C2V_END
C2V_VMENTRY_0(jboolean, shouldDebugNonSafepoints, (JNIEnv* env, jobject))
//see compute_recording_non_safepoints in debugInfroRec.cpp
if (JvmtiExport::should_post_compiled_method_load() && FLAG_IS_DEFAULT(DebugNonSafepoints)) {
return true;
}
return DebugNonSafepoints;
C2V_END
// public native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate);
C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_frame, bool invalidate))
JVMCIObject hs_frame = JVMCIENV->wrap(_hs_frame);
if (hs_frame.is_null()) {
JVMCI_THROW_MSG(NullPointerException, "stack frame is null");
}
requireInHotSpot("materializeVirtualObjects", JVMCI_CHECK);
JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK);
// look for the given stack frame
StackFrameStream fst(thread, false /* update */, true /* process_frames */);
intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame);
while (fst.current()->id() != stack_pointer && !fst.is_done()) {
fst.next();
}
if (fst.current()->id() != stack_pointer) {
JVMCI_THROW_MSG(IllegalStateException, "stack frame not found");
}
if (invalidate) {
if (!fst.current()->is_compiled_frame()) {
JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
}
assert(fst.current()->cb()->is_nmethod(), "nmethod expected");
((nmethod*) fst.current()->cb())->make_not_entrant();
}
Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none);
// look for the frame again as it has been updated by deopt (pc, deopt state...)
StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */);
while (fstAfterDeopt.current()->id() != stack_pointer && !fstAfterDeopt.is_done()) {
fstAfterDeopt.next();
}
if (fstAfterDeopt.current()->id() != stack_pointer) {
JVMCI_THROW_MSG(IllegalStateException, "stack frame not found after deopt");
}
vframe* vf = vframe::new_vframe(fstAfterDeopt.current(), fstAfterDeopt.register_map(), thread);
if (!vf->is_compiled_frame()) {
JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
}
GrowableArray<compiledVFrame*>* virtualFrames = new GrowableArray<compiledVFrame*>(10);
while (true) {
assert(vf->is_compiled_frame(), "Wrong frame type");
virtualFrames->push(compiledVFrame::cast(vf));
if (vf->is_top()) {
break;
}
vf = vf->sender();
}
int last_frame_number = JVMCIENV->get_HotSpotStackFrameReference_frameNumber(hs_frame);
if (last_frame_number >= virtualFrames->length()) {
JVMCI_THROW_MSG(IllegalStateException, "invalid frame number");
}
// Reallocate the non-escaping objects and restore their fields.
assert (virtualFrames->at(last_frame_number)->scope() != NULL,"invalid scope");
GrowableArray<ScopeValue*>* objects = virtualFrames->at(last_frame_number)->scope()->objects();
if (objects == NULL) {
// no objects to materialize
return;
}
bool realloc_failures = Deoptimization::realloc_objects(thread, fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, CHECK);
Deoptimization::reassign_fields(fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, realloc_failures, false);
for (int frame_index = 0; frame_index < virtualFrames->length(); frame_index++) {
compiledVFrame* cvf = virtualFrames->at(frame_index);
GrowableArray<ScopeValue*>* scopedValues = cvf->scope()->locals();
StackValueCollection* locals = cvf->locals();
if (locals != NULL) {
for (int i2 = 0; i2 < locals->size(); i2++) {
StackValue* var = locals->at(i2);
if (var->type() == T_OBJECT && scopedValues->at(i2)->is_object()) {
jvalue val;
val.l = cast_from_oop<jobject>(locals->at(i2)->get_obj()());
cvf->update_local(T_OBJECT, i2, val);
}
}
}
GrowableArray<ScopeValue*>* scopeExpressions = cvf->scope()->expressions();
StackValueCollection* expressions = cvf->expressions();
if (expressions != NULL) {
for (int i2 = 0; i2 < expressions->size(); i2++) {
StackValue* var = expressions->at(i2);
if (var->type() == T_OBJECT && scopeExpressions->at(i2)->is_object()) {
jvalue val;
val.l = cast_from_oop<jobject>(expressions->at(i2)->get_obj()());
cvf->update_stack(T_OBJECT, i2, val);
}
}
}
GrowableArray<MonitorValue*>* scopeMonitors = cvf->scope()->monitors();
GrowableArray<MonitorInfo*>* monitors = cvf->monitors();
if (monitors != NULL) {
for (int i2 = 0; i2 < monitors->length(); i2++) {
cvf->update_monitor(i2, monitors->at(i2));
}
}
}
// all locals are materialized by now
JVMCIENV->set_HotSpotStackFrameReference_localIsVirtual(hs_frame, NULL);
// update the locals array
JVMCIObjectArray array = JVMCIENV->get_HotSpotStackFrameReference_locals(hs_frame);
StackValueCollection* locals = virtualFrames->at(last_frame_number)->locals();
for (int i = 0; i < locals->size(); i++) {
StackValue* var = locals->at(i);
if (var->type() == T_OBJECT) {
JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
}
}
HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
C2V_END
// Use of tty does not require the current thread to be attached to the VM
// so no need for a full C2V_VMENTRY transition.
C2V_VMENTRY_PREFIX(void, writeDebugOutput, (JNIEnv* env, jobject, jlong buffer, jint length, bool flush))
if (length <= 8) {
tty->write((char*) &buffer, length);
} else {
tty->write((char*) buffer, length);
}
if (flush) {
tty->flush();
}
C2V_END
// Use of tty does not require the current thread to be attached to the VM
// so no need for a full C2V_VMENTRY transition.
C2V_VMENTRY_PREFIX(void, flushDebugOutput, (JNIEnv* env, jobject))
tty->flush();
C2V_END
C2V_VMENTRY_0(jint, methodDataProfileDataSize, (JNIEnv* env, jobject, jlong method_data_pointer, jint position))
MethodData* mdo = (MethodData*) method_data_pointer;
ProfileData* profile_data = mdo->data_at(position);
if (mdo->is_valid(profile_data)) {
return profile_data->size_in_bytes();
}
DataLayout* data = mdo->extra_data_base();
DataLayout* end = mdo->extra_data_limit();
for (;; data = mdo->next_extra(data)) {
assert(data < end, "moved past end of extra data");
profile_data = data->data_in();
if (mdo->dp_to_di(profile_data->dp()) == position) {
return profile_data->size_in_bytes();
}
}
JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Invalid profile data position %d", position));
C2V_END
C2V_VMENTRY_NULL(jobject, getInterfaces, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
if (!klass->is_instance_klass()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
// Regular instance klass, fill in all local interfaces
int size = iklass->local_interfaces()->length();
JVMCIObjectArray interfaces = JVMCIENV->new_HotSpotResolvedObjectTypeImpl_array(size, JVMCI_CHECK_NULL);
for (int index = 0; index < size; index++) {
JVMCIKlassHandle klass(THREAD);
Klass* k = iklass->local_interfaces()->at(index);
klass = k;
JVMCIObject type = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(interfaces, index, type);
}
return JVMCIENV->get_jobject(interfaces);
C2V_END
C2V_VMENTRY_NULL(jobject, getComponentType, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
if (!klass->is_array_klass()) {
return nullptr;
}
oop mirror = klass->java_mirror();
oop component_mirror = java_lang_Class::component_mirror(mirror);
if (component_mirror == nullptr) {
JVMCI_THROW_MSG_0(NullPointerException,
err_msg("Component mirror for array class %s is null", klass->external_name()))
}
Klass* component_klass = java_lang_Class::as_Klass(component_mirror);
if (component_klass != NULL) {
JVMCIKlassHandle klass_handle(THREAD, component_klass);
JVMCIObject result = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
BasicType type = java_lang_Class::primitive_type(component_mirror);
JVMCIObject result = JVMCIENV->get_jvmci_primitive_type(type);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY(void, ensureInitialized, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW(NullPointerException);
}
if (klass->should_be_initialized()) {
InstanceKlass* k = InstanceKlass::cast(klass);
k->initialize(CHECK);
}
C2V_END
C2V_VMENTRY(void, ensureLinked, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW(NullPointerException);
}
if (klass->is_instance_klass()) {
InstanceKlass* k = InstanceKlass::cast(klass);
k->link_class(CHECK);
}
C2V_END
C2V_VMENTRY_0(jint, interpreterFrameSize, (JNIEnv* env, jobject, jobject bytecode_frame_handle))
if (bytecode_frame_handle == NULL) {
JVMCI_THROW_0(NullPointerException);
}
JVMCIObject top_bytecode_frame = JVMCIENV->wrap(bytecode_frame_handle);
JVMCIObject bytecode_frame = top_bytecode_frame;
int size = 0;
int callee_parameters = 0;
int callee_locals = 0;
Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
int extra_args = method->max_stack() - JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
while (bytecode_frame.is_non_null()) {
int locks = JVMCIENV->get_BytecodeFrame_numLocks(bytecode_frame);
int temps = JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
bool is_top_frame = (JVMCIENV->equals(bytecode_frame, top_bytecode_frame));
Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
int frame_size = BytesPerWord * Interpreter::size_activation(method->max_stack(),
temps + callee_parameters,
extra_args,
locks,
callee_parameters,
callee_locals,
is_top_frame);
size += frame_size;
callee_parameters = method->size_of_parameters();
callee_locals = method->max_locals();
extra_args = 0;
bytecode_frame = JVMCIENV->get_BytecodePosition_caller(bytecode_frame);
}
return size + Deoptimization::last_frame_adjust(0, callee_locals) * BytesPerWord;
C2V_END
C2V_VMENTRY(void, compileToBytecode, (JNIEnv* env, jobject, jobject lambda_form_handle))
Handle lambda_form = JVMCIENV->asConstant(JVMCIENV->wrap(lambda_form_handle), JVMCI_CHECK);
if (lambda_form->is_a(vmClasses::LambdaForm_klass())) {
TempNewSymbol compileToBytecode = SymbolTable::new_symbol("compileToBytecode");
JavaValue result(T_VOID);
JavaCalls::call_special(&result, lambda_form, vmClasses::LambdaForm_klass(), compileToBytecode, vmSymbols::void_method_signature(), CHECK);
} else {
JVMCI_THROW_MSG(IllegalArgumentException,
err_msg("Unexpected type: %s", lambda_form->klass()->external_name()))
}
C2V_END
C2V_VMENTRY_0(jint, getIdentityHashCode, (JNIEnv* env, jobject, jobject object))
Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
return obj->identity_hash();
C2V_END
C2V_VMENTRY_0(jboolean, isInternedString, (JNIEnv* env, jobject, jobject object))
Handle str = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
if (!java_lang_String::is_instance(str())) {
return false;
}
int len;
jchar* name = java_lang_String::as_unicode_string(str(), len, CHECK_false);
return (StringTable::lookup(name, len) != NULL);
C2V_END
C2V_VMENTRY_NULL(jobject, unboxPrimitive, (JNIEnv* env, jobject, jobject object))
if (object == NULL) {
JVMCI_THROW_0(NullPointerException);
}
Handle box = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
BasicType type = java_lang_boxing_object::basic_type(box());
jvalue result;
if (java_lang_boxing_object::get_value(box(), &result) == T_ILLEGAL) {
return NULL;
}
JVMCIObject boxResult = JVMCIENV->create_box(type, &result, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(boxResult);
C2V_END
C2V_VMENTRY_NULL(jobject, boxPrimitive, (JNIEnv* env, jobject, jobject object))
if (object == NULL) {
JVMCI_THROW_0(NullPointerException);
}
JVMCIObject box = JVMCIENV->wrap(object);
BasicType type = JVMCIENV->get_box_type(box);
if (type == T_ILLEGAL) {
return NULL;
}
jvalue value = JVMCIENV->get_boxed_value(type, box);
JavaValue box_result(T_OBJECT);
JavaCallArguments jargs;
Klass* box_klass = NULL;
Symbol* box_signature = NULL;
#define BOX_CASE(bt, v, argtype, name) \
case bt: \
jargs.push_##argtype(value.v); \
box_klass = vmClasses::name##_klass(); \
box_signature = vmSymbols::name##_valueOf_signature(); \
break
switch (type) {
BOX_CASE(T_BOOLEAN, z, int, Boolean);
BOX_CASE(T_BYTE, b, int, Byte);
BOX_CASE(T_CHAR, c, int, Character);
BOX_CASE(T_SHORT, s, int, Short);
BOX_CASE(T_INT, i, int, Integer);
BOX_CASE(T_LONG, j, long, Long);
BOX_CASE(T_FLOAT, f, float, Float);
BOX_CASE(T_DOUBLE, d, double, Double);
default:
ShouldNotReachHere();
}
#undef BOX_CASE
JavaCalls::call_static(&box_result,
box_klass,
vmSymbols::valueOf_name(),
box_signature, &jargs, CHECK_NULL);
oop hotspot_box = box_result.get_oop();
JVMCIObject result = JVMCIENV->get_object_constant(hotspot_box, false);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobjectArray, getDeclaredConstructors, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
if (!klass->is_instance_klass()) {
JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobjectArray(methods);
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
GrowableArray<Method*> constructors_array;
for (int i = 0; i < iklass->methods()->length(); i++) {
Method* m = iklass->methods()->at(i);
if (m->is_initializer() && !m->is_static()) {
constructors_array.append(m);
}
}
JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(constructors_array.length(), JVMCI_CHECK_NULL);
for (int i = 0; i < constructors_array.length(); i++) {
methodHandle ctor(THREAD, constructors_array.at(i));
JVMCIObject method = JVMCIENV->get_jvmci_method(ctor, JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(methods, i, method);
}
return JVMCIENV->get_jobjectArray(methods);
C2V_END
C2V_VMENTRY_NULL(jobjectArray, getDeclaredMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
if (!klass->is_instance_klass()) {
JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobjectArray(methods);
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
GrowableArray<Method*> methods_array;
for (int i = 0; i < iklass->methods()->length(); i++) {
Method* m = iklass->methods()->at(i);
if (!m->is_initializer() && !m->is_overpass()) {
methods_array.append(m);
}
}
JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(methods_array.length(), JVMCI_CHECK_NULL);
for (int i = 0; i < methods_array.length(); i++) {
methodHandle mh(THREAD, methods_array.at(i));
JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(methods, i, method);
}
return JVMCIENV->get_jobjectArray(methods);
C2V_END
static jobject read_field_value(Handle obj, long displacement, jchar type_char, bool is_static, Thread* THREAD, JVMCIEnv* JVMCIENV) {
BasicType basic_type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
int basic_type_elemsize = type2aelembytes(basic_type);
if (displacement < 0 || ((size_t) displacement + basic_type_elemsize > HeapWordSize * obj->size())) {
// Reading outside of the object bounds
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading outside object bounds");
}
// Perform basic sanity checks on the read. Primitive reads are permitted to read outside the
// bounds of their fields but object reads must map exactly onto the underlying oop slot.
bool aligned = (displacement % basic_type_elemsize) == 0;
if (!aligned) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "read is unaligned");
}
if (basic_type == T_OBJECT) {
if (obj->is_objArray()) {
if (displacement < arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
}
if (displacement + heapOopSize > arrayOopDesc::base_offset_in_bytes(T_OBJECT) + arrayOop(obj())->length() * heapOopSize) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading after last array element");
}
if (((displacement - arrayOopDesc::base_offset_in_bytes(T_OBJECT)) % heapOopSize) != 0) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "misaligned object read from array");
}
} else if (obj->is_instance()) {
InstanceKlass* klass = InstanceKlass::cast(is_static ? java_lang_Class::as_Klass(obj()) : obj->klass());
fieldDescriptor fd;
if (!klass->find_field_from_offset(displacement, is_static, &fd)) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Can't find field at displacement %d in object of type %s", (int) displacement, klass->external_name()));
}
if (fd.field_type() != T_OBJECT && fd.field_type() != T_ARRAY) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Field at displacement %d in object of type %s is %s but expected %s", (int) displacement,
klass->external_name(), type2name(fd.field_type()), type2name(basic_type)));
}
} else if (obj->is_typeArray()) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Can't read objects from primitive array");
} else {
ShouldNotReachHere();
}
} else {
if (obj->is_objArray()) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Reading primitive from object array");
} else if (obj->is_typeArray()) {
if (displacement < arrayOopDesc::base_offset_in_bytes(ArrayKlass::cast(obj->klass())->element_type())) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
}
}
}
jlong value = 0;
// Treat all reads as volatile for simplicity as this function can be used
// both for reading Java fields declared as volatile as well as for constant
// folding Unsafe.get* methods with volatile semantics.
switch (basic_type) {
case T_BOOLEAN: value = obj->bool_field_acquire(displacement); break;
case T_BYTE: value = obj->byte_field_acquire(displacement); break;
case T_SHORT: value = obj->short_field_acquire(displacement); break;
case T_CHAR: value = obj->char_field_acquire(displacement); break;
case T_FLOAT:
case T_INT: value = obj->int_field_acquire(displacement); break;
case T_DOUBLE:
case T_LONG: value = obj->long_field_acquire(displacement); break;
case T_OBJECT: {
if (displacement == java_lang_Class::component_mirror_offset() && java_lang_Class::is_instance(obj()) &&
(java_lang_Class::as_Klass(obj()) == nullptr || !java_lang_Class::as_Klass(obj())->is_array_klass())) {
// Class.componentType for non-array classes can transiently contain an int[] that's
// used for locking so always return null to mimic Class.getComponentType()
return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
}
oop value = obj->obj_field_acquire(displacement);
if (value == nullptr) {
return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
} else {
if (value != nullptr && !oopDesc::is_oop(value)) {
// Throw an exception to improve debuggability. This check isn't totally reliable because
// is_oop doesn't try to be completety safe but for most invalid values it provides a good
// enough answer. It possible to crash in the is_oop call but that just means the crash happens
// closer to where things went wrong.
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Read bad oop " INTPTR_FORMAT " at offset " JLONG_FORMAT " in object " INTPTR_FORMAT " of type %s",
p2i(value), displacement, p2i(obj()), obj->klass()->external_name()));
}
JVMCIObject result = JVMCIENV->get_object_constant(value);
return JVMCIENV->get_jobject(result);
}
}
default:
ShouldNotReachHere();
}
JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, value, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, readStaticFieldValue, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), long displacement, jchar type_char))
Klass* klass = UNPACK_PAIR(Klass, klass);
Handle obj(THREAD, klass->java_mirror());
return read_field_value(obj, displacement, type_char, true, THREAD, JVMCIENV);
C2V_END
C2V_VMENTRY_NULL(jobject, readFieldValue, (JNIEnv* env, jobject, jobject object, ARGUMENT_PAIR(expected_type), long displacement, jchar type_char))
if (object == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
// asConstant will throw an NPE if a constant contains NULL
Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
Klass* expected_klass = UNPACK_PAIR(Klass, expected_type);
if (expected_klass != nullptr) {
InstanceKlass* expected_iklass = InstanceKlass::cast(expected_klass);
if (!obj->is_a(expected_iklass)) {
// Not of the expected type
return nullptr;
}
}
bool is_static = expected_klass == nullptr && java_lang_Class::is_instance(obj()) && displacement >= InstanceMirrorKlass::offset_of_static_fields();
return read_field_value(obj, displacement, type_char, is_static, THREAD, JVMCIENV);
C2V_END
C2V_VMENTRY_0(jboolean, isInstance, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jobject object))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (object == NULL || klass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
return obj->is_a(klass);
C2V_END
C2V_VMENTRY_0(jboolean, isAssignableFrom, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(subklass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
Klass* subklass = UNPACK_PAIR(Klass, subklass);
if (klass == nullptr || subklass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
return subklass->is_subtype_of(klass);
C2V_END
C2V_VMENTRY_0(jboolean, isTrustedForIntrinsics, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
InstanceKlass* ik = InstanceKlass::cast(klass);
if (ik->class_loader_data()->is_boot_class_loader_data() || ik->class_loader_data()->is_platform_class_loader_data()) {
return true;
}
return false;
C2V_END
C2V_VMENTRY_NULL(jobject, asJavaType, (JNIEnv* env, jobject, jobject object))
if (object == NULL) {
JVMCI_THROW_0(NullPointerException);
}
Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
if (java_lang_Class::is_instance(obj())) {
if (java_lang_Class::is_primitive(obj())) {
JVMCIObject type = JVMCIENV->get_jvmci_primitive_type(java_lang_Class::primitive_type(obj()));
return JVMCIENV->get_jobject(type);
}
Klass* klass = java_lang_Class::as_Klass(obj());
JVMCIKlassHandle klass_handle(THREAD);
klass_handle = klass;
JVMCIObject type = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(type);
}
return NULL;
C2V_END
C2V_VMENTRY_NULL(jobject, asString, (JNIEnv* env, jobject, jobject object))
if (object == NULL) {
JVMCI_THROW_0(NullPointerException);
}
Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
const char* str = java_lang_String::as_utf8_string(obj());
JVMCIObject result = JVMCIENV->create_string(str, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jboolean, equals, (JNIEnv* env, jobject, jobject x, jlong xHandle, jobject y, jlong yHandle))
if (x == NULL || y == NULL) {
JVMCI_THROW_0(NullPointerException);
}
return JVMCIENV->resolve_oop_handle(xHandle) == JVMCIENV->resolve_oop_handle(yHandle);
C2V_END
C2V_VMENTRY_NULL(jobject, getJavaMirror, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
JVMCI_THROW_0(NullPointerException);
}
Handle mirror(THREAD, klass->java_mirror());
JVMCIObject result = JVMCIENV->get_object_constant(mirror());
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jint, getArrayLength, (JNIEnv* env, jobject, jobject x))
if (x == NULL) {
JVMCI_THROW_0(NullPointerException);
}
Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_0);
if (xobj->klass()->is_array_klass()) {
return arrayOop(xobj())->length();
}
return -1;
C2V_END
C2V_VMENTRY_NULL(jobject, readArrayElement, (JNIEnv* env, jobject, jobject x, int index))
if (x == NULL) {
JVMCI_THROW_0(NullPointerException);
}
Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_NULL);
if (xobj->klass()->is_array_klass()) {
arrayOop array = arrayOop(xobj());
BasicType element_type = ArrayKlass::cast(array->klass())->element_type();
if (index < 0 || index >= array->length()) {
return NULL;
}
JVMCIObject result;
if (element_type == T_OBJECT) {
result = JVMCIENV->get_object_constant(objArrayOop(xobj())->obj_at(index));
if (result.is_null()) {
result = JVMCIENV->get_JavaConstant_NULL_POINTER();
}
} else {
jvalue value;
switch (element_type) {
case T_DOUBLE: value.d = typeArrayOop(xobj())->double_at(index); break;
case T_FLOAT: value.f = typeArrayOop(xobj())->float_at(index); break;
case T_LONG: value.j = typeArrayOop(xobj())->long_at(index); break;
case T_INT: value.i = typeArrayOop(xobj())->int_at(index); break;
case T_SHORT: value.s = typeArrayOop(xobj())->short_at(index); break;
case T_CHAR: value.c = typeArrayOop(xobj())->char_at(index); break;
case T_BYTE: value.b = typeArrayOop(xobj())->byte_at(index); break;
case T_BOOLEAN: value.z = typeArrayOop(xobj())->byte_at(index) & 1; break;
default: ShouldNotReachHere();
}
result = JVMCIENV->create_box(element_type, &value, JVMCI_CHECK_NULL);
}
assert(!result.is_null(), "must have a value");
return JVMCIENV->get_jobject(result);
}
return NULL;;
C2V_END
C2V_VMENTRY_0(jint, arrayBaseOffset, (JNIEnv* env, jobject, jchar type_char))
BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
return arrayOopDesc::header_size(type) * HeapWordSize;
C2V_END
C2V_VMENTRY_0(jint, arrayIndexScale, (JNIEnv* env, jobject, jchar type_char))
BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
return type2aelembytes(type);
C2V_END
C2V_VMENTRY(void, releaseClearedOopHandles, (JNIEnv* env, jobject))
JVMCIENV->runtime()->release_cleared_oop_handles();
C2V_END
static void requireJVMCINativeLibrary(JVMCI_TRAPS) {
if (!UseJVMCINativeLibrary) {
JVMCI_THROW_MSG(UnsupportedOperationException, "JVMCI shared library is not enabled (requires -XX:+UseJVMCINativeLibrary)");
}
}
C2V_VMENTRY_NULL(jlongArray, registerNativeMethods, (JNIEnv* env, jobject, jclass mirror))
requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
requireInHotSpot("registerNativeMethods", JVMCI_CHECK_NULL);
char* sl_path;
void* sl_handle;
JVMCIRuntime* runtime;
{
// Ensure the JVMCI shared library runtime is initialized.
JVMCIEnv __peer_jvmci_env__(thread, false, __FILE__, __LINE__);
JVMCIEnv* peerEnv = &__peer_jvmci_env__;
HandleMark hm(THREAD);
runtime = JVMCI::compiler_runtime(thread);
if (peerEnv->has_pending_exception()) {
peerEnv->describe_pending_exception(true);
}
sl_handle = JVMCI::get_shared_library(sl_path, false);
if (sl_handle == NULL) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Error initializing JVMCI runtime %d", runtime->id()));
}
}
if (mirror == NULL) {
JVMCI_THROW_0(NullPointerException);
}
Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
if (klass == NULL || !klass->is_instance_klass()) {
JVMCI_THROW_MSG_0(IllegalArgumentException, "clazz is for primitive type");
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
for (int i = 0; i < iklass->methods()->length(); i++) {
methodHandle method(THREAD, iklass->methods()->at(i));
if (method->is_native()) {
// Compute argument size
int args_size = 1 // JNIEnv
+ (method->is_static() ? 1 : 0) // class for static methods
+ method->size_of_parameters(); // actual parameters
// 1) Try JNI short style
stringStream st;
char* pure_name = NativeLookup::pure_jni_name(method);
guarantee(pure_name != NULL, "Illegal native method name encountered");
os::print_jni_name_prefix_on(&st, args_size);
st.print_raw(pure_name);
os::print_jni_name_suffix_on(&st, args_size);
char* jni_name = st.as_string();
address entry = (address) os::dll_lookup(sl_handle, jni_name);
if (entry == NULL) {
// 2) Try JNI long style
st.reset();
char* long_name = NativeLookup::long_jni_name(method);
guarantee(long_name != NULL, "Illegal native method name encountered");
os::print_jni_name_prefix_on(&st, args_size);
st.print_raw(pure_name);
st.print_raw(long_name);
os::print_jni_name_suffix_on(&st, args_size);
char* jni_long_name = st.as_string();
entry = (address) os::dll_lookup(sl_handle, jni_long_name);
if (entry == NULL) {
JVMCI_THROW_MSG_0(UnsatisfiedLinkError, err_msg("%s [neither %s nor %s exist in %s]",
method->name_and_sig_as_C_string(),
jni_name, jni_long_name, sl_path));
}
}
if (method->has_native_function() && entry != method->native_function()) {
JVMCI_THROW_MSG_0(UnsatisfiedLinkError, err_msg("%s [cannot re-link from " PTR_FORMAT " to " PTR_FORMAT "]",
method->name_and_sig_as_C_string(), p2i(method->native_function()), p2i(entry)));
}
method->set_native_function(entry, Method::native_bind_event_is_interesting);
log_debug(jni, resolve)("[Dynamic-linking native method %s.%s ... JNI] @ " PTR_FORMAT,
method->method_holder()->external_name(),
method->name()->as_C_string(),
p2i((void*) entry));
}
}
typeArrayOop info_oop = oopFactory::new_longArray(4, CHECK_0);
jlongArray info = (jlongArray) JNIHandles::make_local(THREAD, info_oop);
runtime->init_JavaVM_info(info, JVMCI_CHECK_0);
return info;
}
C2V_VMENTRY_PREFIX(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject c2vm))
if (thread == nullptr || thread->libjvmci_runtime() == nullptr) {
// Called from unattached JVMCI shared library thread
return false;
}
if (thread->jni_environment() == env) {
C2V_BLOCK(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject))
JVMCITraceMark jtm("isCurrentThreadAttached");
requireJVMCINativeLibrary(JVMCI_CHECK_0);
JVMCIRuntime* runtime = thread->libjvmci_runtime();
if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in isCurrentThreadAttached");
}
JNIEnv* peerEnv;
return runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) == JNI_OK;
}
return true;
C2V_END
C2V_VMENTRY_PREFIX(jlong, getCurrentJavaThread, (JNIEnv* env, jobject c2vm))
if (thread == NULL) {
// Called from unattached JVMCI shared library thread
return 0L;
}
return (jlong) p2i(thread);
C2V_END
// Attaches a thread started in a JVMCI shared library to a JavaThread and JVMCI runtime.
static void attachSharedLibraryThread(JNIEnv* env, jbyteArray name, jboolean as_daemon) {
JavaVM* javaVM = nullptr;
jint res = env->GetJavaVM(&javaVM);
if (res != JNI_OK) {
JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Error getting shared library JavaVM from shared library JNIEnv: %d", res));
}
extern struct JavaVM_ main_vm;
JNIEnv* hotspotEnv;
int name_len = env->GetArrayLength(name);
char name_buf[64]; // Cannot use Resource heap as it requires a current thread
int to_copy = MIN2(name_len, (int) sizeof(name_buf) - 1);
env->GetByteArrayRegion(name, 0, to_copy, (jbyte*) name_buf);
name_buf[to_copy] = '\0';
JavaVMAttachArgs attach_args;
attach_args.version = JNI_VERSION_1_2;
attach_args.name = name_buf;
attach_args.group = nullptr;
res = as_daemon ? main_vm.AttachCurrentThreadAsDaemon((void**)&hotspotEnv, &attach_args) :
main_vm.AttachCurrentThread((void**)&hotspotEnv, &attach_args);
if (res != JNI_OK) {
JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Trying to attach thread returned %d", res));
}
JavaThread* thread = get_current_thread(false);
const char* attach_error;
{
// Transition to VM
JVMCI_VM_ENTRY_MARK
attach_error = JVMCIRuntime::attach_shared_library_thread(thread, javaVM);
// Transition back to Native
}
if (attach_error != nullptr) {
JNI_THROW("attachCurrentThread", InternalError, attach_error);
}
}
C2V_VMENTRY_PREFIX(jboolean, attachCurrentThread, (JNIEnv* env, jobject c2vm, jbyteArray name, jboolean as_daemon, jlongArray javaVM_info))
if (thread == nullptr) {
attachSharedLibraryThread(env, name, as_daemon);
return true;
}
if (thread->jni_environment() == env) {
// Called from HotSpot
C2V_BLOCK(jboolean, attachCurrentThread, (JNIEnv* env, jobject, jboolean))
JVMCITraceMark jtm("attachCurrentThread");
requireJVMCINativeLibrary(JVMCI_CHECK_0);
JVMCIRuntime* runtime = JVMCI::compiler_runtime(thread);
JNIEnv* peerJNIEnv;
if (runtime->has_shared_library_javavm()) {
if (runtime->GetEnv(thread, (void**)&peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
// Already attached
runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
return false;
}
}
{
// Ensure the JVMCI shared library runtime is initialized.
JVMCIEnv __peer_jvmci_env__(thread, false, __FILE__, __LINE__);
JVMCIEnv* peerJVMCIEnv = &__peer_jvmci_env__;
HandleMark hm(thread);
JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(peerJVMCIEnv);
if (peerJVMCIEnv->has_pending_exception()) {
peerJVMCIEnv->describe_pending_exception(true);
}
char* sl_path;
if (JVMCI::get_shared_library(sl_path, false) == nullptr) {
JVMCI_THROW_MSG_0(InternalError, "Error initializing JVMCI runtime");
}
}
JavaVMAttachArgs attach_args;
attach_args.version = JNI_VERSION_1_2;
attach_args.name = const_cast<char*>(thread->name());
attach_args.group = nullptr;
if (runtime->GetEnv(thread, (void**) &peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
return false;
}
jint res = as_daemon ? runtime->AttachCurrentThreadAsDaemon(thread, (void**) &peerJNIEnv, &attach_args) :
runtime->AttachCurrentThread(thread, (void**) &peerJNIEnv, &attach_args);
if (res == JNI_OK) {
guarantee(peerJNIEnv != nullptr, "must be");
runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
JVMCI_event_1("attached to JavaVM[%d] for JVMCI runtime %d", runtime->get_shared_library_javavm_id(), runtime->id());
return true;
}
JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, attach_args.name));
}
// Called from JVMCI shared library
return false;
C2V_END
C2V_VMENTRY_PREFIX(jboolean, detachCurrentThread, (JNIEnv* env, jobject c2vm, jboolean release))
if (thread == nullptr) {
// Called from unattached JVMCI shared library thread
JNI_THROW_("detachCurrentThread", IllegalStateException, "Cannot detach non-attached thread", false);
}
if (thread->jni_environment() == env) {
// Called from HotSpot
C2V_BLOCK(void, detachCurrentThread, (JNIEnv* env, jobject))
JVMCITraceMark jtm("detachCurrentThread");
requireJVMCINativeLibrary(JVMCI_CHECK_0);
requireInHotSpot("detachCurrentThread", JVMCI_CHECK_0);
JVMCIRuntime* runtime = thread->libjvmci_runtime();
if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in detachCurrentThread");
}
JNIEnv* peerEnv;
if (runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) != JNI_OK) {
JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot detach non-attached thread: %s", thread->name()));
}
jint res = runtime->DetachCurrentThread(thread);
if (res != JNI_OK) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, thread->name()));
}
JVMCI_event_1("detached from JavaVM[%d] for JVMCI runtime %d",
runtime->get_shared_library_javavm_id(), runtime->id());
if (release) {
return runtime->detach_thread(thread, "user thread detach");
}
} else {
// Called from attached JVMCI shared library thread
if (release) {
JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread cannot release JVMCI shared library JavaVM", false);
}
JVMCIRuntime* runtime = thread->libjvmci_runtime();
if (runtime == nullptr) {
JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread should have a JVMCI runtime", false);
}
{
// Transition to VM
C2V_BLOCK(jboolean, detachCurrentThread, (JNIEnv* env, jobject))
// Cannot destroy shared library JavaVM as we're about to return to it.
runtime->detach_thread(thread, "shared library thread detach", false);
JVMCI_event_1("detaching JVMCI shared library thread from HotSpot JavaVM");
// Transition back to Native
}
extern struct JavaVM_ main_vm;
jint res = main_vm.DetachCurrentThread();
if (res != JNI_OK) {
JNI_THROW_("detachCurrentThread", InternalError, "Cannot detach non-attached thread", false);
}
}
return false;
C2V_END
C2V_VMENTRY_0(jlong, translate, (JNIEnv* env, jobject, jobject obj_handle, jboolean callPostTranslation))
requireJVMCINativeLibrary(JVMCI_CHECK_0);
if (obj_handle == NULL) {
return 0L;
}
JVMCIEnv __peer_jvmci_env__(thread, !JVMCIENV->is_hotspot(), __FILE__, __LINE__);
JVMCIEnv* peerEnv = &__peer_jvmci_env__;
JVMCIEnv* thisEnv = JVMCIENV;
JVMCIObject obj = thisEnv->wrap(obj_handle);
JVMCIObject result;
if (thisEnv->isa_HotSpotResolvedJavaMethodImpl(obj)) {
methodHandle method(THREAD, thisEnv->asMethod(obj));
result = peerEnv->get_jvmci_method(method, JVMCI_CHECK_0);
} else if (thisEnv->isa_HotSpotResolvedObjectTypeImpl(obj)) {
Klass* klass = thisEnv->asKlass(obj);
JVMCIKlassHandle klass_handle(THREAD);
klass_handle = klass;
result = peerEnv->get_jvmci_type(klass_handle, JVMCI_CHECK_0);
} else if (thisEnv->isa_HotSpotResolvedPrimitiveType(obj)) {
BasicType type = JVMCIENV->kindToBasicType(JVMCIENV->get_HotSpotResolvedPrimitiveType_kind(obj), JVMCI_CHECK_0);
result = peerEnv->get_jvmci_primitive_type(type);
} else if (thisEnv->isa_IndirectHotSpotObjectConstantImpl(obj) ||
thisEnv->isa_DirectHotSpotObjectConstantImpl(obj)) {
Handle constant = thisEnv->asConstant(obj, JVMCI_CHECK_0);
result = peerEnv->get_object_constant(constant());
} else if (thisEnv->isa_HotSpotNmethod(obj)) {
if (peerEnv->is_hotspot()) {
nmethod* nm = JVMCIENV->get_nmethod(obj);
if (nm != NULL) {
JVMCINMethodData* data = nm->jvmci_nmethod_data();
if (data != NULL) {
// Only the mirror in the HotSpot heap is accessible
// through JVMCINMethodData
oop nmethod_mirror = data->get_nmethod_mirror(nm, /* phantom_ref */ true);
if (nmethod_mirror != NULL) {
result = HotSpotJVMCI::wrap(nmethod_mirror);
}
}
}
}
if (result.is_null()) {
JVMCIObject methodObject = thisEnv->get_HotSpotNmethod_method(obj);
methodHandle mh(THREAD, thisEnv->asMethod(methodObject));
jboolean isDefault = thisEnv->get_HotSpotNmethod_isDefault(obj);
jlong compileIdSnapshot = thisEnv->get_HotSpotNmethod_compileIdSnapshot(obj);
JVMCIObject name_string = thisEnv->get_InstalledCode_name(obj);
const char* cstring = name_string.is_null() ? NULL : thisEnv->as_utf8_string(name_string);
// Create a new HotSpotNmethod instance in the peer runtime
result = peerEnv->new_HotSpotNmethod(mh, cstring, isDefault, compileIdSnapshot, JVMCI_CHECK_0);
nmethod* nm = JVMCIENV->get_nmethod(obj);
if (result.is_null()) {
// exception occurred (e.g. OOME) creating a new HotSpotNmethod
} else if (nm == NULL) {
// nmethod must have been unloaded
} else {
// Link the new HotSpotNmethod to the nmethod
peerEnv->initialize_installed_code(result, nm, JVMCI_CHECK_0);
// Only HotSpotNmethod instances in the HotSpot heap are tracked directly by the runtime.
if (peerEnv->is_hotspot()) {
JVMCINMethodData* data = nm->jvmci_nmethod_data();
if (data == NULL) {
JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot set HotSpotNmethod mirror for default nmethod");
}
if (data->get_nmethod_mirror(nm, /* phantom_ref */ false) != NULL) {
JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot overwrite existing HotSpotNmethod mirror for nmethod");
}
oop nmethod_mirror = HotSpotJVMCI::resolve(result);
data->set_nmethod_mirror(nm, nmethod_mirror);
}
}
}
} else {
JVMCI_THROW_MSG_0(IllegalArgumentException,
err_msg("Cannot translate object of type: %s", thisEnv->klass_name(obj)));
}
if (callPostTranslation) {
peerEnv->call_HotSpotJVMCIRuntime_postTranslation(result, JVMCI_CHECK_0);
}
// Propagate any exception that occurred while creating the translated object
if (peerEnv->transfer_pending_exception(thread, thisEnv)) {
return 0L;
}
return (jlong) peerEnv->make_global(result).as_jobject();
}
C2V_VMENTRY_NULL(jobject, unhand, (JNIEnv* env, jobject, jlong obj_handle))
requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
if (obj_handle == 0L) {
return NULL;
}
jobject global_handle = (jobject) obj_handle;
JVMCIObject global_handle_obj = JVMCIENV->wrap(global_handle);
jobject result = JVMCIENV->make_local(global_handle_obj).as_jobject();
JVMCIENV->destroy_global(global_handle_obj);
return result;
}
C2V_VMENTRY(void, updateHotSpotNmethod, (JNIEnv* env, jobject, jobject code_handle))
JVMCIObject code = JVMCIENV->wrap(code_handle);
// Execute this operation for the side effect of updating the InstalledCode state
JVMCIENV->get_nmethod(code);
}
C2V_VMENTRY_NULL(jbyteArray, getCode, (JNIEnv* env, jobject, jobject code_handle))
JVMCIObject code = JVMCIENV->wrap(code_handle);
CodeBlob* cb = JVMCIENV->get_code_blob(code);
if (cb == NULL) {
return NULL;
}
// Make a resource copy of code before the allocation causes a safepoint
int code_size = cb->code_size();
jbyte* code_bytes = NEW_RESOURCE_ARRAY(jbyte, code_size);
memcpy(code_bytes, (jbyte*) cb->code_begin(), code_size);
JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
JVMCIENV->copy_bytes_from(code_bytes, result, 0, code_size);
return JVMCIENV->get_jbyteArray(result);
}
C2V_VMENTRY_NULL(jobject, asReflectionExecutable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
requireInHotSpot("asReflectionExecutable", JVMCI_CHECK_NULL);
methodHandle m(THREAD, UNPACK_PAIR(Method, method));
oop executable;
if (m->is_initializer()) {
if (m->is_static_initializer()) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException,
"Cannot create java.lang.reflect.Method for class initializer");
}
executable = Reflection::new_constructor(m, CHECK_NULL);
} else {
executable = Reflection::new_method(m, false, CHECK_NULL);
}
return JNIHandles::make_local(THREAD, executable);
}
C2V_VMENTRY_NULL(jobject, asReflectionField, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index))
requireInHotSpot("asReflectionField", JVMCI_CHECK_NULL);
Klass* klass = UNPACK_PAIR(Klass, klass);
if (!klass->is_instance_klass()) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException,
err_msg("Expected non-primitive type, got %s", klass->external_name()));
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
Array<u2>* fields = iklass->fields();
if (index < 0 ||index > fields->length()) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException,
err_msg("Field index %d out of bounds for %s", index, klass->external_name()));
}
fieldDescriptor fd(iklass, index);
oop reflected = Reflection::new_field(&fd, CHECK_NULL);
return JNIHandles::make_local(THREAD, reflected);
}
C2V_VMENTRY_NULL(jobjectArray, getFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address, jobjectArray current))
FailedSpeculation* head = *((FailedSpeculation**)(address) failed_speculations_address);
int result_length = 0;
for (FailedSpeculation* fs = head; fs != NULL; fs = fs->next()) {
result_length++;
}
int current_length = 0;
JVMCIObjectArray current_array = NULL;
if (current != NULL) {
current_array = JVMCIENV->wrap(current);
current_length = JVMCIENV->get_length(current_array);
if (current_length == result_length) {
// No new failures
return current;
}
}
JVMCIObjectArray result = JVMCIENV->new_byte_array_array(result_length, JVMCI_CHECK_NULL);
int result_index = 0;
for (FailedSpeculation* fs = head; result_index < result_length; fs = fs->next()) {
assert(fs != NULL, "npe");
JVMCIPrimitiveArray entry;
if (result_index < current_length) {
entry = (JVMCIPrimitiveArray) JVMCIENV->get_object_at(current_array, result_index);
} else {
entry = JVMCIENV->new_byteArray(fs->data_len(), JVMCI_CHECK_NULL);
JVMCIENV->copy_bytes_from((jbyte*) fs->data(), entry, 0, fs->data_len());
}
JVMCIENV->put_object_at(result, result_index++, entry);
}
return JVMCIENV->get_jobjectArray(result);
}
C2V_VMENTRY_0(jlong, getFailedSpeculationsAddress, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
MethodData* method_data = method->method_data();
if (method_data == NULL) {
ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
method_data = MethodData::allocate(loader_data, method, CHECK_0);
method->set_method_data(method_data);
}
return (jlong) method_data->get_failed_speculations_address();
}
C2V_VMENTRY(void, releaseFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address))
FailedSpeculation::free_failed_speculations((FailedSpeculation**)(address) failed_speculations_address);
}
C2V_VMENTRY_0(jboolean, addFailedSpeculation, (JNIEnv* env, jobject, jlong failed_speculations_address, jbyteArray speculation_obj))
JVMCIPrimitiveArray speculation_handle = JVMCIENV->wrap(speculation_obj);
int speculation_len = JVMCIENV->get_length(speculation_handle);
char* speculation = NEW_RESOURCE_ARRAY(char, speculation_len);
JVMCIENV->copy_bytes_to(speculation_handle, (jbyte*) speculation, 0, speculation_len);
return FailedSpeculation::add_failed_speculation(NULL, (FailedSpeculation**)(address) failed_speculations_address, (address) speculation, speculation_len);
}
C2V_VMENTRY(void, callSystemExit, (JNIEnv* env, jobject, jint status))
JavaValue result(T_VOID);
JavaCallArguments jargs(1);
jargs.push_int(status);
JavaCalls::call_static(&result,
vmClasses::System_klass(),
vmSymbols::exit_method_name(),
vmSymbols::int_void_signature(),
&jargs,
CHECK);
}
C2V_VMENTRY_0(jlong, ticksNow, (JNIEnv* env, jobject))
return CompilerEvent::ticksNow();
}
C2V_VMENTRY_0(jint, registerCompilerPhase, (JNIEnv* env, jobject, jstring jphase_name))
#if INCLUDE_JFR
JVMCIObject phase_name = JVMCIENV->wrap(jphase_name);
const char *name = JVMCIENV->as_utf8_string(phase_name);
return CompilerEvent::PhaseEvent::get_phase_id(name, true, true, true);
#else
return -1;
#endif // !INCLUDE_JFR
}
C2V_VMENTRY(void, notifyCompilerPhaseEvent, (JNIEnv* env, jobject, jlong startTime, jint phase, jint compileId, jint level))
EventCompilerPhase event;
if (event.should_commit()) {
CompilerEvent::PhaseEvent::post(event, startTime, phase, compileId, level);
}
}
C2V_VMENTRY(void, notifyCompilerInliningEvent, (JNIEnv* env, jobject, jint compileId, ARGUMENT_PAIR(caller), ARGUMENT_PAIR(callee), jboolean succeeded, jstring jmessage, jint bci))
EventCompilerInlining event;
if (event.should_commit()) {
Method* caller = UNPACK_PAIR(Method, caller);
Method* callee = UNPACK_PAIR(Method, callee);
JVMCIObject message = JVMCIENV->wrap(jmessage);
CompilerEvent::InlineEvent::post(event, compileId, caller, callee, succeeded, JVMCIENV->as_utf8_string(message), bci);
}
}
C2V_VMENTRY(void, setThreadLocalObject, (JNIEnv* env, jobject, jint id, jobject value))
requireInHotSpot("setThreadLocalObject", JVMCI_CHECK);
if (id == 0) {
thread->set_jvmci_reserved_oop0(JNIHandles::resolve(value));
return;
}
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("%d is not a valid thread local id", id));
}
C2V_VMENTRY_NULL(jobject, getThreadLocalObject, (JNIEnv* env, jobject, jint id))
requireInHotSpot("getThreadLocalObject", JVMCI_CHECK_NULL);
if (id == 0) {
return JNIHandles::make_local(thread->get_jvmci_reserved_oop0());
}
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("%d is not a valid thread local id", id));
}
C2V_VMENTRY(void, setThreadLocalLong, (JNIEnv* env, jobject, jint id, jlong value))
requireInHotSpot("setThreadLocalLong", JVMCI_CHECK);
if (id == 0) {
thread->set_jvmci_reserved0(value);
} else if (id == 1) {
thread->set_jvmci_reserved1(value);
} else {
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("%d is not a valid thread local id", id));
}
}
C2V_VMENTRY_0(jlong, getThreadLocalLong, (JNIEnv* env, jobject, jint id))
requireInHotSpot("getThreadLocalLong", JVMCI_CHECK_0);
if (id == 0) {
return thread->get_jvmci_reserved0();
} else if (id == 1) {
return thread->get_jvmci_reserved1();
} else {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("%d is not a valid thread local id", id));
}
}
#define CC (char*) /*cast a literal from (const char*)*/
#define FN_PTR(f) CAST_FROM_FN_PTR(void*, &(c2v_ ## f))
#define STRING "Ljava/lang/String;"
#define OBJECT "Ljava/lang/Object;"
#define CLASS "Ljava/lang/Class;"
#define OBJECTCONSTANT "Ljdk/vm/ci/hotspot/HotSpotObjectConstantImpl;"
#define EXECUTABLE "Ljava/lang/reflect/Executable;"
#define STACK_TRACE_ELEMENT "Ljava/lang/StackTraceElement;"
#define INSTALLED_CODE "Ljdk/vm/ci/code/InstalledCode;"
#define BYTECODE_FRAME "Ljdk/vm/ci/code/BytecodeFrame;"
#define JAVACONSTANT "Ljdk/vm/ci/meta/JavaConstant;"
#define INSPECTED_FRAME_VISITOR "Ljdk/vm/ci/code/stack/InspectedFrameVisitor;"
#define RESOLVED_METHOD "Ljdk/vm/ci/meta/ResolvedJavaMethod;"
#define HS_RESOLVED_TYPE "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaType;"
#define HS_INSTALLED_CODE "Ljdk/vm/ci/hotspot/HotSpotInstalledCode;"
#define HS_NMETHOD "Ljdk/vm/ci/hotspot/HotSpotNmethod;"
#define HS_COMPILED_CODE "Ljdk/vm/ci/hotspot/HotSpotCompiledCode;"
#define HS_CONFIG "Ljdk/vm/ci/hotspot/HotSpotVMConfig;"
#define HS_STACK_FRAME_REF "Ljdk/vm/ci/hotspot/HotSpotStackFrameReference;"
#define HS_SPECULATION_LOG "Ljdk/vm/ci/hotspot/HotSpotSpeculationLog;"
#define REFLECTION_EXECUTABLE "Ljava/lang/reflect/Executable;"
#define REFLECTION_FIELD "Ljava/lang/reflect/Field;"
// Types wrapping VM pointers. The ...2 macro is for a pair: (wrapper, pointer)
#define HS_METHOD "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;"
#define HS_METHOD2 "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;J"
#define HS_KLASS "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;"
#define HS_KLASS2 "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;J"
#define HS_CONSTANT_POOL "Ljdk/vm/ci/hotspot/HotSpotConstantPool;"
#define HS_CONSTANT_POOL2 "Ljdk/vm/ci/hotspot/HotSpotConstantPool;J"
JNINativeMethod CompilerToVM::methods[] = {
{CC "getBytecode", CC "(" HS_METHOD2 ")[B", FN_PTR(getBytecode)},
{CC "getExceptionTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getExceptionTableStart)},
{CC "getExceptionTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getExceptionTableLength)},
{CC "findUniqueConcreteMethod", CC "(" HS_KLASS2 HS_METHOD2 ")" HS_METHOD, FN_PTR(findUniqueConcreteMethod)},
{CC "getImplementor", CC "(" HS_KLASS2 ")" HS_KLASS, FN_PTR(getImplementor)},
{CC "getStackTraceElement", CC "(" HS_METHOD2 "I)" STACK_TRACE_ELEMENT, FN_PTR(getStackTraceElement)},
{CC "methodIsIgnoredBySecurityStackWalk", CC "(" HS_METHOD2 ")Z", FN_PTR(methodIsIgnoredBySecurityStackWalk)},
{CC "setNotInlinableOrCompilable", CC "(" HS_METHOD2 ")V", FN_PTR(setNotInlinableOrCompilable)},
{CC "isCompilable", CC "(" HS_METHOD2 ")Z", FN_PTR(isCompilable)},
{CC "hasNeverInlineDirective", CC "(" HS_METHOD2 ")Z", FN_PTR(hasNeverInlineDirective)},
{CC "shouldInlineMethod", CC "(" HS_METHOD2 ")Z", FN_PTR(shouldInlineMethod)},
{CC "lookupType", CC "(" STRING HS_KLASS2 "Z)" HS_RESOLVED_TYPE, FN_PTR(lookupType)},
{CC "getArrayType", CC "(C" HS_KLASS2 ")" HS_KLASS, FN_PTR(getArrayType)},
{CC "lookupClass", CC "(" CLASS ")" HS_RESOLVED_TYPE, FN_PTR(lookupClass)},
{CC "lookupNameInPool", CC "(" HS_CONSTANT_POOL2 "I)" STRING, FN_PTR(lookupNameInPool)},
{CC "lookupNameAndTypeRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(lookupNameAndTypeRefIndexInPool)},
{CC "lookupSignatureInPool", CC "(" HS_CONSTANT_POOL2 "I)" STRING, FN_PTR(lookupSignatureInPool)},
{CC "lookupKlassRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(lookupKlassRefIndexInPool)},
{CC "lookupKlassInPool", CC "(" HS_CONSTANT_POOL2 "I)Ljava/lang/Object;", FN_PTR(lookupKlassInPool)},
{CC "lookupAppendixInPool", CC "(" HS_CONSTANT_POOL2 "I)" OBJECTCONSTANT, FN_PTR(lookupAppendixInPool)},
{CC "lookupMethodInPool", CC "(" HS_CONSTANT_POOL2 "IB" HS_METHOD2 ")" HS_METHOD, FN_PTR(lookupMethodInPool)},
{CC "constantPoolRemapInstructionOperandFromCache", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(constantPoolRemapInstructionOperandFromCache)},
{CC "resolveBootstrapMethod", CC "(" HS_CONSTANT_POOL2 "I)[" OBJECT, FN_PTR(resolveBootstrapMethod)},
{CC "getUncachedStringInPool", CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT, FN_PTR(getUncachedStringInPool)},
{CC "resolvePossiblyCachedConstantInPool", CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT, FN_PTR(resolvePossiblyCachedConstantInPool)},
{CC "resolveTypeInPool", CC "(" HS_CONSTANT_POOL2 "I)" HS_KLASS, FN_PTR(resolveTypeInPool)},
{CC "resolveFieldInPool", CC "(" HS_CONSTANT_POOL2 "I" HS_METHOD2 "B[I)" HS_KLASS, FN_PTR(resolveFieldInPool)},
{CC "resolveInvokeDynamicInPool", CC "(" HS_CONSTANT_POOL2 "I)V", FN_PTR(resolveInvokeDynamicInPool)},
{CC "resolveInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "I)V", FN_PTR(resolveInvokeHandleInPool)},
{CC "isResolvedInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(isResolvedInvokeHandleInPool)},
{CC "resolveMethod", CC "(" HS_KLASS2 HS_METHOD2 HS_KLASS2 ")" HS_METHOD, FN_PTR(resolveMethod)},
{CC "getSignaturePolymorphicHolders", CC "()[" STRING, FN_PTR(getSignaturePolymorphicHolders)},
{CC "getVtableIndexForInterfaceMethod", CC "(" HS_KLASS2 HS_METHOD2 ")I", FN_PTR(getVtableIndexForInterfaceMethod)},
{CC "getClassInitializer", CC "(" HS_KLASS2 ")" HS_METHOD, FN_PTR(getClassInitializer)},
{CC "hasFinalizableSubclass", CC "(" HS_KLASS2 ")Z", FN_PTR(hasFinalizableSubclass)},
{CC "getMaxCallTargetOffset", CC "(J)J", FN_PTR(getMaxCallTargetOffset)},
{CC "asResolvedJavaMethod", CC "(" EXECUTABLE ")" HS_METHOD, FN_PTR(asResolvedJavaMethod)},
{CC "getResolvedJavaMethod", CC "(" OBJECTCONSTANT "J)" HS_METHOD, FN_PTR(getResolvedJavaMethod)},
{CC "getConstantPool", CC "(" OBJECT "JZ)" HS_CONSTANT_POOL, FN_PTR(getConstantPool)},
{CC "getResolvedJavaType0", CC "(Ljava/lang/Object;JZ)" HS_KLASS, FN_PTR(getResolvedJavaType0)},
{CC "readConfiguration", CC "()[" OBJECT, FN_PTR(readConfiguration)},
{CC "installCode0", CC "(JJZ" HS_COMPILED_CODE "[" OBJECT INSTALLED_CODE "J[B)I", FN_PTR(installCode0)},
{CC "getInstallCodeFlags", CC "()I", FN_PTR(getInstallCodeFlags)},
{CC "resetCompilationStatistics", CC "()V", FN_PTR(resetCompilationStatistics)},
{CC "disassembleCodeBlob", CC "(" INSTALLED_CODE ")" STRING, FN_PTR(disassembleCodeBlob)},
{CC "executeHotSpotNmethod", CC "([" OBJECT HS_NMETHOD ")" OBJECT, FN_PTR(executeHotSpotNmethod)},
{CC "getLineNumberTable", CC "(" HS_METHOD2 ")[J", FN_PTR(getLineNumberTable)},
{CC "getLocalVariableTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getLocalVariableTableStart)},
{CC "getLocalVariableTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getLocalVariableTableLength)},
{CC "reprofile", CC "(" HS_METHOD2 ")V", FN_PTR(reprofile)},
{CC "invalidateHotSpotNmethod", CC "(" HS_NMETHOD "Z)V", FN_PTR(invalidateHotSpotNmethod)}, | | |
