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/*
* Copyright (c) 2013, 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 "ci/ciMethodData.hpp"
#include "ci/ciReplay.hpp"
#include "ci/ciSymbol.hpp"
#include "ci/ciKlass.hpp"
#include "ci/ciUtilities.inline.hpp"
#include "classfile/javaClasses.hpp"
#include "classfile/symbolTable.hpp"
#include "classfile/systemDictionary.hpp"
#include "compiler/compilationPolicy.hpp"
#include "compiler/compileBroker.hpp"
#include "compiler/compilerDefinitions.inline.hpp"
#include "interpreter/linkResolver.hpp"
#include "jvm.h"
#include "memory/allocation.inline.hpp"
#include "memory/oopFactory.hpp"
#include "memory/resourceArea.hpp"
#include "oops/constantPool.hpp"
#include "oops/cpCache.inline.hpp"
#include "oops/fieldStreams.inline.hpp"
#include "oops/klass.inline.hpp"
#include "oops/method.inline.hpp"
#include "oops/oop.inline.hpp"
#include "prims/jvmtiExport.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/fieldDescriptor.inline.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/java.hpp"
#include "runtime/jniHandles.inline.hpp"
#include "runtime/threads.hpp"
#include "utilities/copy.hpp"
#include "utilities/macros.hpp"
#include "utilities/utf8.hpp"
// ciReplay
typedef struct _ciMethodDataRecord {
const char* _klass_name;
const char* _method_name;
const char* _signature;
int _state;
int _invocation_counter;
intptr_t* _data;
char* _orig_data;
Klass** _classes;
Method** _methods;
int* _classes_offsets;
int* _methods_offsets;
int _data_length;
int _orig_data_length;
int _classes_length;
int _methods_length;
} ciMethodDataRecord;
typedef struct _ciMethodRecord {
const char* _klass_name;
const char* _method_name;
const char* _signature;
int _instructions_size;
int _interpreter_invocation_count;
int _interpreter_throwout_count;
int _invocation_counter;
int _backedge_counter;
} ciMethodRecord;
typedef struct _ciInstanceKlassRecord {
const InstanceKlass* _klass;
jobject _java_mirror; // Global handle to java mirror to prevent unloading
} ciInstanceKlassRecord;
typedef struct _ciInlineRecord {
const char* _klass_name;
const char* _method_name;
const char* _signature;
int _inline_depth;
int _inline_bci;
bool _inline_late;
} ciInlineRecord;
class CompileReplay;
static CompileReplay* replay_state;
class CompileReplay : public StackObj {
private:
FILE* _stream;
Thread* _thread;
Handle _protection_domain;
bool _protection_domain_initialized;
Handle _loader;
int _version;
GrowableArray<ciMethodRecord*> _ci_method_records;
GrowableArray<ciMethodDataRecord*> _ci_method_data_records;
GrowableArray<ciInstanceKlassRecord*> _ci_instance_klass_records;
// Use pointer because we may need to return inline records
// without destroying them.
GrowableArray<ciInlineRecord*>* _ci_inline_records;
const char* _error_message;
char* _bufptr;
char* _buffer;
int _buffer_length;
// "compile" data
ciKlass* _iklass;
Method* _imethod;
int _entry_bci;
int _comp_level;
public:
CompileReplay(const char* filename, TRAPS) {
_thread = THREAD;
_loader = Handle(_thread, SystemDictionary::java_system_loader());
_protection_domain = Handle();
_protection_domain_initialized = false;
_stream = os::fopen(filename, "rt");
if (_stream == NULL) {
fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
}
_ci_inline_records = NULL;
_error_message = NULL;
_buffer_length = 32;
_buffer = NEW_RESOURCE_ARRAY(char, _buffer_length);
_bufptr = _buffer;
_imethod = NULL;
_iklass = NULL;
_entry_bci = 0;
_comp_level = 0;
_version = 0;
test();
}
~CompileReplay() {
if (_stream != NULL) fclose(_stream);
}
void test() {
strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
_bufptr = _buffer;
assert(parse_int("test") == 1, "what");
assert(parse_int("test") == 2, "what");
assert(strcmp(parse_string(), "foo") == 0, "what");
assert(parse_int("test") == 4, "what");
assert(strcmp(parse_string(), "bar") == 0, "what");
assert(parse_intptr_t("test") == 9, "what");
assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
}
bool had_error() {
return _error_message != NULL || _thread->has_pending_exception();
}
bool can_replay() {
return !(_stream == NULL || had_error());
}
void report_error(const char* msg) {
_error_message = msg;
}
int parse_int(const char* label) {
if (had_error()) {
return 0;
}
int v = 0;
int read;
if (sscanf(_bufptr, "%i%n", &v, &read) != 1) {
report_error(label);
} else {
_bufptr += read;
}
return v;
}
intptr_t parse_intptr_t(const char* label) {
if (had_error()) {
return 0;
}
intptr_t v = 0;
int read;
if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
report_error(label);
} else {
_bufptr += read;
}
return v;
}
void skip_ws() {
// Skip any leading whitespace
while (*_bufptr == ' ' || *_bufptr == '\t') {
_bufptr++;
}
}
// Ignore the rest of the line
void skip_remaining() {
_bufptr = &_bufptr[strlen(_bufptr)]; // skip ahead to terminator
}
char* scan_and_terminate(char delim) {
char* str = _bufptr;
while (*_bufptr != delim && *_bufptr != '\0') {
_bufptr++;
}
if (*_bufptr != '\0') {
*_bufptr++ = '\0';
}
if (_bufptr == str) {
// nothing here
return NULL;
}
return str;
}
char* parse_string() {
if (had_error()) return NULL;
skip_ws();
return scan_and_terminate(' ');
}
char* parse_quoted_string() {
if (had_error()) return NULL;
skip_ws();
if (*_bufptr == '"') {
_bufptr++;
return scan_and_terminate('"');
} else {
return scan_and_terminate(' ');
}
}
char* parse_escaped_string() {
char* result = parse_quoted_string();
if (result != NULL) {
unescape_string(result);
}
return result;
}
// Look for the tag 'tag' followed by an
bool parse_tag_and_count(const char* tag, int& length) {
const char* t = parse_string();
if (t == NULL) {
return false;
}
if (strcmp(tag, t) != 0) {
report_error(tag);
return false;
}
length = parse_int("parse_tag_and_count");
return !had_error();
}
// Parse a sequence of raw data encoded as bytes and return the
// resulting data.
char* parse_data(const char* tag, int& length) {
int read_size = 0;
if (!parse_tag_and_count(tag, read_size)) {
return NULL;
}
int actual_size = sizeof(MethodData::CompilerCounters);
char *result = NEW_RESOURCE_ARRAY(char, actual_size);
int i = 0;
if (read_size != actual_size) {
tty->print_cr("Warning: ciMethodData parsing sees MethodData size %i in file, current is %i", read_size,
actual_size);
// Replay serializes the entire MethodData, but the data is at the end.
// If the MethodData instance size has changed, we can pad or truncate in the beginning
int padding = actual_size - read_size;
if (padding > 0) {
// pad missing data with zeros
tty->print_cr("- Padding MethodData");
for (; i < padding; i++) {
result[i] = 0;
}
} else if (padding < 0) {
// drop some data
tty->print_cr("- Truncating MethodData");
for (int j = 0; j < -padding; j++) {
int val = parse_int("data");
// discard val
}
}
}
assert(i < actual_size, "At least some data must remain to be copied");
for (; i < actual_size; i++) {
int val = parse_int("data");
result[i] = val;
}
length = actual_size;
return result;
}
// Parse a standard chunk of data emitted as:
// 'tag' <length> # # ...
// Where each # is an intptr_t item
intptr_t* parse_intptr_data(const char* tag, int& length) {
if (!parse_tag_and_count(tag, length)) {
return NULL;
}
intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
for (int i = 0; i < length; i++) {
skip_ws();
intptr_t val = parse_intptr_t("data");
result[i] = val;
}
return result;
}
// Parse a possibly quoted version of a symbol into a symbolOop
Symbol* parse_symbol() {
const char* str = parse_escaped_string();
if (str != NULL) {
Symbol* sym = SymbolTable::new_symbol(str);
return sym;
}
return NULL;
}
bool parse_terminator() {
char* terminator = parse_string();
if (terminator != NULL && strcmp(terminator, ";") == 0) {
return true;
}
return false;
}
// Parse a special hidden klass location syntax
// syntax: @bci <klass> <name> <signature> <bci> <location>* ;
// syntax: @cpi <klass> <cpi> <location>* ;
Klass* parse_cp_ref(TRAPS) {
JavaThread* thread = THREAD;
oop obj = NULL;
char* ref = parse_string();
if (strcmp(ref, "bci") == 0) {
Method* m = parse_method(CHECK_NULL);
if (m == NULL) {
return NULL;
}
InstanceKlass* ik = m->method_holder();
const constantPoolHandle cp(Thread::current(), ik->constants());
// invokedynamic or invokehandle
methodHandle caller(Thread::current(), m);
int bci = parse_int("bci");
if (m->validate_bci(bci) != bci) {
report_error("bad bci");
return NULL;
}
ik->link_class(CHECK_NULL);
Bytecode_invoke bytecode = Bytecode_invoke_check(caller, bci);
if (!Bytecodes::is_defined(bytecode.code()) || !bytecode.is_valid()) {
report_error("no invoke found at bci");
return NULL;
}
bytecode.verify();
int index = bytecode.index();
ConstantPoolCacheEntry* cp_cache_entry = NULL;
CallInfo callInfo;
Bytecodes::Code bc = bytecode.invoke_code();
LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, bc, CHECK_NULL);
if (bytecode.is_invokedynamic()) {
cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index);
cp_cache_entry->set_dynamic_call(cp, callInfo);
} else if (bytecode.is_invokehandle()) {
#ifdef ASSERT
Klass* holder = cp->klass_ref_at(index, CHECK_NULL);
Symbol* name = cp->name_ref_at(index);
assert(MethodHandles::is_signature_polymorphic_name(holder, name), "");
#endif
cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
cp_cache_entry->set_method_handle(cp, callInfo);
} else {
report_error("no dynamic invoke found");
return NULL;
}
char* dyno_ref = parse_string();
if (strcmp(dyno_ref, "") == 0) {
obj = cp_cache_entry->appendix_if_resolved(cp);
} else if (strcmp(dyno_ref, "") == 0) {
if (!parse_terminator()) {
report_error("no dynamic invoke found");
return NULL;
}
Method* adapter = cp_cache_entry->f1_as_method();
if (adapter == NULL) {
report_error("no adapter found");
return NULL;
}
return adapter->method_holder();
} else if (strcmp(dyno_ref, "") == 0) {
int pool_index = cp_cache_entry->constant_pool_index();
BootstrapInfo bootstrap_specifier(cp, pool_index, index);
obj = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), CHECK_NULL);
} else {
report_error("unrecognized token");
return NULL;
}
} else {
// constant pool ref (MethodHandle)
if (strcmp(ref, "cpi") != 0) {
report_error("unexpected token");
return NULL;
}
Klass* k = parse_klass(CHECK_NULL);
if (k == NULL) {
return NULL;
}
InstanceKlass* ik = InstanceKlass::cast(k);
const constantPoolHandle cp(Thread::current(), ik->constants());
int cpi = parse_int("cpi");
if (cpi >= cp->length()) {
report_error("bad cpi");
return NULL;
}
if (!cp->tag_at(cpi).is_method_handle()) {
report_error("no method handle found at cpi");
return NULL;
}
ik->link_class(CHECK_NULL);
obj = cp->resolve_possibly_cached_constant_at(cpi, CHECK_NULL);
}
if (obj == NULL) {
report_error("null cp object found");
return NULL;
}
Klass* k = NULL;
skip_ws();
// loop: read fields
char* field = NULL;
do {
field = parse_string();
if (field == NULL) {
report_error("no field found");
return NULL;
}
if (strcmp(field, ";") == 0) {
break;
}
// raw Method*
if (strcmp(field, "") == 0) {
Method* vmtarget = java_lang_invoke_MemberName::vmtarget(obj);
k = (vmtarget == NULL) ? NULL : vmtarget->method_holder();
if (k == NULL) {
report_error("null vmtarget found");
return NULL;
}
if (!parse_terminator()) {
report_error("missing terminator");
return NULL;
}
return k;
}
obj = ciReplay::obj_field(obj, field);
// array
if (obj != NULL && obj->is_objArray()) {
objArrayOop arr = (objArrayOop)obj;
int index = parse_int("index");
if (index >= arr->length()) {
report_error("bad array index");
return NULL;
}
obj = arr->obj_at(index);
}
} while (obj != NULL);
if (obj == NULL) {
report_error("null field found");
return NULL;
}
k = obj->klass();
return k;
}
// Parse a valid klass name and look it up
// syntax: <name>
// syntax: <constant pool ref>
Klass* parse_klass(TRAPS) {
skip_ws();
// check for constant pool object reference (for a dynamic/hidden class)
bool cp_ref = (*_bufptr == '@');
if (cp_ref) {
++_bufptr;
Klass* k = parse_cp_ref(CHECK_NULL);
if (k != NULL && !k->is_hidden()) {
report_error("expected hidden class");
return NULL;
}
return k;
}
char* str = parse_escaped_string();
Symbol* klass_name = SymbolTable::new_symbol(str);
if (klass_name != NULL) {
Klass* k = NULL;
if (_iklass != NULL) {
k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding();
} else {
k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
}
if (HAS_PENDING_EXCEPTION) {
oop throwable = PENDING_EXCEPTION;
java_lang_Throwable::print(throwable, tty);
tty->cr();
report_error(str);
if (ReplayIgnoreInitErrors) {
CLEAR_PENDING_EXCEPTION;
_error_message = NULL;
}
return NULL;
}
return k;
}
return NULL;
}
// Lookup a klass
Klass* resolve_klass(const char* klass, TRAPS) {
Symbol* klass_name = SymbolTable::new_symbol(klass);
return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD);
}
// Parse the standard tuple of <klass> <name> <signature>
Method* parse_method(TRAPS) {
InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
if (k == NULL) {
report_error("Can't find holder klass");
return NULL;
}
Symbol* method_name = parse_symbol();
Symbol* method_signature = parse_symbol();
Method* m = k->find_method(method_name, method_signature);
if (m == NULL) {
report_error("Can't find method");
}
return m;
}
int get_line(int c) {
int buffer_pos = 0;
while(c != EOF) {
if (buffer_pos + 1 >= _buffer_length) {
int new_length = _buffer_length * 2;
// Next call will throw error in case of OOM.
_buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length);
_buffer_length = new_length;
}
if (c == '\n') {
c = getc(_stream); // get next char
break;
} else if (c == '\r') {
// skip LF
} else {
_buffer[buffer_pos++] = c;
}
c = getc(_stream);
}
// null terminate it, reset the pointer
_buffer[buffer_pos] = '\0'; // NL or EOF
_bufptr = _buffer;
return c;
}
// Process each line of the replay file executing each command until
// the file ends.
void process(TRAPS) {
int line_no = 1;
int c = getc(_stream);
while(c != EOF) {
c = get_line(c);
process_command(THREAD);
if (had_error()) {
int pos = _bufptr - _buffer + 1;
tty->print_cr("Error while parsing line %d at position %d: %s\n", line_no, pos, _error_message);
if (ReplayIgnoreInitErrors) {
CLEAR_PENDING_EXCEPTION;
_error_message = NULL;
} else {
return;
}
}
line_no++;
}
reset();
}
void process_command(TRAPS) {
char* cmd = parse_string();
if (cmd == NULL) {
return;
}
if (strcmp("#", cmd) == 0) {
// comment line, print or ignore
if (Verbose) {
tty->print_cr("# %s", _bufptr);
}
skip_remaining();
} else if (strcmp("version", cmd) == 0) {
_version = parse_int("version");
if (_version < 0 || _version > REPLAY_VERSION) {
tty->print_cr("# unrecognized version %d, expected 0 <= version <= %d", _version, REPLAY_VERSION);
}
} else if (strcmp("compile", cmd) == 0) {
process_compile(CHECK);
} else if (strcmp("ciMethod", cmd) == 0) {
process_ciMethod(CHECK);
} else if (strcmp("ciMethodData", cmd) == 0) {
process_ciMethodData(CHECK);
} else if (strcmp("staticfield", cmd) == 0) {
process_staticfield(CHECK);
} else if (strcmp("ciInstanceKlass", cmd) == 0) {
process_ciInstanceKlass(CHECK);
} else if (strcmp("instanceKlass", cmd) == 0) {
process_instanceKlass(CHECK);
#if INCLUDE_JVMTI
} else if (strcmp("JvmtiExport", cmd) == 0) {
process_JvmtiExport(CHECK);
#endif // INCLUDE_JVMTI
} else {
report_error("unknown command");
}
if (!had_error() && *_bufptr != '\0') {
report_error("line not properly terminated");
}
}
// validation of comp_level
bool is_valid_comp_level(int comp_level) {
const int msg_len = 256;
char* msg = NULL;
if (!is_compile(comp_level)) {
msg = NEW_RESOURCE_ARRAY(char, msg_len);
jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
} else if (is_c1_compile(comp_level) && !CompilerConfig::is_c1_enabled()) {
msg = NEW_RESOURCE_ARRAY(char, msg_len);
jio_snprintf(msg, msg_len, "compilation level %d requires C1", comp_level);
} else if (is_c2_compile(comp_level) && !CompilerConfig::is_c2_enabled()) {
msg = NEW_RESOURCE_ARRAY(char, msg_len);
jio_snprintf(msg, msg_len, "compilation level %d requires C2", comp_level);
}
if (msg != NULL) {
report_error(msg);
return false;
}
return true;
}
// compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <klass> <name> <signature>)*
void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) {
_imethod = m;
_iklass = imethod->holder();
_entry_bci = entry_bci;
_comp_level = comp_level;
int line_no = 1;
int c = getc(_stream);
while(c != EOF) {
c = get_line(c);
// Expecting only lines with "compile" command in inline replay file.
char* cmd = parse_string();
if (cmd == NULL || strcmp("compile", cmd) != 0) {
return NULL;
}
process_compile(CHECK_NULL);
if (had_error()) {
tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
tty->print_cr("%s", _buffer);
return NULL;
}
if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) {
// Found inlining record for the requested method.
return _ci_inline_records;
}
line_no++;
}
return NULL;
}
// compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> (<depth> <bci> <inline_late> <klass> <name> <signature>)*
void process_compile(TRAPS) {
Method* method = parse_method(CHECK);
if (had_error()) return;
int entry_bci = parse_int("entry_bci");
int comp_level = parse_int("comp_level");
if (!is_valid_comp_level(comp_level)) {
return;
}
if (_imethod != NULL) {
// Replay Inlining
if (entry_bci != _entry_bci || comp_level != _comp_level) {
return;
}
const char* iklass_name = _imethod->method_holder()->name()->as_utf8();
const char* imethod_name = _imethod->name()->as_utf8();
const char* isignature = _imethod->signature()->as_utf8();
const char* klass_name = method->method_holder()->name()->as_utf8();
const char* method_name = method->name()->as_utf8();
const char* signature = method->signature()->as_utf8();
if (strcmp(iklass_name, klass_name) != 0 ||
strcmp(imethod_name, method_name) != 0 ||
strcmp(isignature, signature) != 0) {
return;
}
}
int inline_count = 0;
if (parse_tag_and_count("inline", inline_count)) {
// Record inlining data
_ci_inline_records = new GrowableArray<ciInlineRecord*>();
for (int i = 0; i < inline_count; i++) {
int depth = parse_int("inline_depth");
int bci = parse_int("inline_bci");
if (had_error()) {
break;
}
int inline_late = 0;
if (_version >= 2) {
inline_late = parse_int("inline_late");
if (had_error()) {
break;
}
}
Method* inl_method = parse_method(CHECK);
if (had_error()) {
break;
}
new_ciInlineRecord(inl_method, bci, depth, inline_late);
}
}
if (_imethod != NULL) {
return; // Replay Inlining
}
InstanceKlass* ik = method->method_holder();
ik->initialize(THREAD);
if (HAS_PENDING_EXCEPTION) {
oop throwable = PENDING_EXCEPTION;
java_lang_Throwable::print(throwable, tty);
tty->cr();
if (ReplayIgnoreInitErrors) {
CLEAR_PENDING_EXCEPTION;
ik->set_init_state(InstanceKlass::fully_initialized);
} else {
return;
}
}
// Make sure the existence of a prior compile doesn't stop this one
CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
if (nm != NULL) {
nm->make_not_entrant();
}
replay_state = this;
CompileBroker::compile_method(methodHandle(THREAD, method), entry_bci, comp_level,
methodHandle(), 0, CompileTask::Reason_Replay, THREAD);
replay_state = NULL;
}
// ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
void process_ciMethod(TRAPS) {
Method* method = parse_method(CHECK);
if (had_error()) return;
ciMethodRecord* rec = new_ciMethod(method);
rec->_invocation_counter = parse_int("invocation_counter");
rec->_backedge_counter = parse_int("backedge_counter");
rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count");
rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count");
rec->_instructions_size = parse_int("instructions_size");
}
// ciMethodData <klass> <name> <signature> <state> <invocation_counter> orig <length> <byte>* data <length> <ptr>* oops <length> (<offset> <klass>)* methods <length> (<offset> <klass> <name> <signature>)*
void process_ciMethodData(TRAPS) {
Method* method = parse_method(CHECK);
if (had_error()) return;
/* just copied from Method, to build interpret data*/
// To be properly initialized, some profiling in the MDO needs the
// method to be rewritten (number of arguments at a call for instance)
method->method_holder()->link_class(CHECK);
assert(method->method_data() == NULL, "Should only be initialized once");
ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
MethodData* method_data = MethodData::allocate(loader_data, methodHandle(THREAD, method), CHECK);
method->set_method_data(method_data);
// collect and record all the needed information for later
ciMethodDataRecord* rec = new_ciMethodData(method);
rec->_state = parse_int("state");
if (_version < 1) {
parse_int("current_mileage");
} else {
rec->_invocation_counter = parse_int("invocation_counter");
}
rec->_orig_data = parse_data("orig", rec->_orig_data_length);
if (rec->_orig_data == NULL) {
return;
}
rec->_data = parse_intptr_data("data", rec->_data_length);
if (rec->_data == NULL) {
return;
}
if (!parse_tag_and_count("oops", rec->_classes_length)) {
return;
}
rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length);
rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length);
for (int i = 0; i < rec->_classes_length; i++) {
int offset = parse_int("offset");
if (had_error()) {
return;
}
Klass* k = parse_klass(CHECK);
rec->_classes_offsets[i] = offset;
rec->_classes[i] = k;
}
if (!parse_tag_and_count("methods", rec->_methods_length)) {
return;
}
rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length);
rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length);
for (int i = 0; i < rec->_methods_length; i++) {
int offset = parse_int("offset");
if (had_error()) {
return;
}
Method* m = parse_method(CHECK);
rec->_methods_offsets[i] = offset;
rec->_methods[i] = m;
}
}
// instanceKlass <name>
// instanceKlass <constant pool ref> # <original hidden class name>
//
// Loads and initializes the klass 'name'. This can be used to
// create particular class loading environments
void process_instanceKlass(TRAPS) {
// just load the referenced class
Klass* k = parse_klass(CHECK);
if (_version >= 1) {
if (!_protection_domain_initialized && k != NULL) {
assert(_protection_domain() == NULL, "must be uninitialized");
// The first entry is the holder class of the method for which a replay compilation is requested.
// Use the same protection domain to load all subsequent classes in order to resolve all classes
// in signatures of inlinees. This ensures that inlining can be done as stated in the replay file.
_protection_domain = Handle(_thread, k->protection_domain());
}
_protection_domain_initialized = true;
}
if (k == NULL) {
return;
}
const char* comment = parse_string();
bool is_comment = comment != NULL && strcmp(comment, "#") == 0;
if (k->is_hidden() != is_comment) {
report_error("hidden class with comment expected");
return;
}
// comment, print or ignore
if (is_comment) {
if (Verbose) {
const char* hidden = parse_string();
tty->print_cr("Found %s for %s", k->name()->as_quoted_ascii(), hidden);
}
skip_remaining();
}
}
// ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag*
//
// Load the klass 'name' and link or initialize it. Verify that the
// constant pool is the same length as 'length' and make sure the
// constant pool tags are in the same state.
void process_ciInstanceKlass(TRAPS) {
InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK);
if (k == NULL) {
skip_remaining();
return;
}
int is_linked = parse_int("is_linked");
int is_initialized = parse_int("is_initialized");
int length = parse_int("length");
if (is_initialized) {
k->initialize(THREAD);
if (HAS_PENDING_EXCEPTION) {
oop throwable = PENDING_EXCEPTION;
java_lang_Throwable::print(throwable, tty);
tty->cr();
if (ReplayIgnoreInitErrors) {
CLEAR_PENDING_EXCEPTION;
k->set_init_state(InstanceKlass::fully_initialized);
} else {
return;
}
}
} else if (is_linked) {
k->link_class(CHECK);
}
new_ciInstanceKlass(k);
ConstantPool* cp = k->constants();
if (length != cp->length()) {
report_error("constant pool length mismatch: wrong class files?");
return;
}
int parsed_two_word = 0;
for (int i = 1; i < length; i++) {
int tag = parse_int("tag");
if (had_error()) {
return;
}
switch (cp->tag_at(i).value()) {
case JVM_CONSTANT_UnresolvedClass: {
if (tag == JVM_CONSTANT_Class) {
tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i);
Klass* k = cp->klass_at(i, CHECK);
}
break;
}
case JVM_CONSTANT_Long:
case JVM_CONSTANT_Double:
parsed_two_word = i + 1;
case JVM_CONSTANT_ClassIndex:
case JVM_CONSTANT_StringIndex:
case JVM_CONSTANT_String:
case JVM_CONSTANT_UnresolvedClassInError:
case JVM_CONSTANT_Fieldref:
case JVM_CONSTANT_Methodref:
case JVM_CONSTANT_InterfaceMethodref:
case JVM_CONSTANT_NameAndType:
case JVM_CONSTANT_Utf8:
case JVM_CONSTANT_Integer:
case JVM_CONSTANT_Float:
case JVM_CONSTANT_MethodHandle:
case JVM_CONSTANT_MethodType:
case JVM_CONSTANT_Dynamic:
case JVM_CONSTANT_InvokeDynamic:
if (tag != cp->tag_at(i).value()) {
report_error("tag mismatch: wrong class files?");
return;
}
break;
case JVM_CONSTANT_Class:
if (tag == JVM_CONSTANT_UnresolvedClass) {
Klass* k = cp->klass_at(i, CHECK);
tty->print_cr("Warning: entry was unresolved in the replay data: %s", k->name()->as_utf8());
} else if (tag != JVM_CONSTANT_Class) {
report_error("Unexpected tag");
return;
}
break;
case 0:
if (parsed_two_word == i) continue;
default:
fatal("Unexpected tag: %d", cp->tag_at(i).value());
break;
}
}
}
// staticfield <klass> <name> <signature> <value>
//
// Initialize a class and fill in the value for a static field.
// This is useful when the compile was dependent on the value of
// static fields but it's impossible to properly rerun the static
// initializer.
void process_staticfield(TRAPS) {
InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
if (k == NULL || ReplaySuppressInitializers == 0 ||
(ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) {
skip_remaining();
return;
}
assert(k->is_initialized(), "must be");
const char* field_name = parse_escaped_string();
const char* field_signature = parse_string();
fieldDescriptor fd;
Symbol* name = SymbolTable::new_symbol(field_name);
Symbol* sig = SymbolTable::new_symbol(field_signature);
if (!k->find_local_field(name, sig, &fd) ||
!fd.is_static() ||
fd.has_initial_value()) {
report_error(field_name);
return;
}
oop java_mirror = k->java_mirror();
if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
int length = parse_int("array length");
oop value = NULL;
if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
// multi dimensional array
ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
if (kelem == NULL) {
return;
}
int rank = 0;
while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
rank++;
}
jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
dims[0] = length;
for (int i = 1; i < rank; i++) {
dims[i] = 1; // These aren't relevant to the compiler
}
value = kelem->multi_allocate(rank, dims, CHECK);
} else {
if (strcmp(field_signature, "[B") == 0) {
value = oopFactory::new_byteArray(length, CHECK);
} else if (strcmp(field_signature, "[Z") == 0) {
value = oopFactory::new_boolArray(length, CHECK);
} else if (strcmp(field_signature, "[C") == 0) {
value = oopFactory::new_charArray(length, CHECK);
} else if (strcmp(field_signature, "[S") == 0) {
value = oopFactory::new_shortArray(length, CHECK);
} else if (strcmp(field_signature, "[F") == 0) {
value = oopFactory::new_floatArray(length, CHECK);
} else if (strcmp(field_signature, "[D") == 0) {
value = oopFactory::new_doubleArray(length, CHECK);
} else if (strcmp(field_signature, "[I") == 0) {
value = oopFactory::new_intArray(length, CHECK);
} else if (strcmp(field_signature, "[J") == 0) {
value = oopFactory::new_longArray(length, CHECK);
} else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
field_signature[1] == JVM_SIGNATURE_CLASS) {
Klass* kelem = resolve_klass(field_signature + 1, CHECK);
value = oopFactory::new_objArray(kelem, length, CHECK);
} else {
report_error("unhandled array staticfield");
}
}
java_mirror->obj_field_put(fd.offset(), value);
} else {
const char* string_value = parse_escaped_string();
if (strcmp(field_signature, "I") == 0) {
int value = atoi(string_value);
java_mirror->int_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "B") == 0) {
int value = atoi(string_value);
java_mirror->byte_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "C") == 0) {
int value = atoi(string_value);
java_mirror->char_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "S") == 0) {
int value = atoi(string_value);
java_mirror->short_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "Z") == 0) {
int value = atoi(string_value);
java_mirror->bool_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "J") == 0) {
jlong value;
if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
fprintf(stderr, "Error parsing long: %s\n", string_value);
return;
}
java_mirror->long_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "F") == 0) {
float value = atof(string_value);
java_mirror->float_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "D") == 0) {
double value = atof(string_value);
java_mirror->double_field_put(fd.offset(), value);
} else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
Handle value = java_lang_String::create_from_str(string_value, CHECK);
java_mirror->obj_field_put(fd.offset(), value());
} else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
Klass* k = resolve_klass(string_value, CHECK);
oop value = InstanceKlass::cast(k)->allocate_instance(CHECK);
java_mirror->obj_field_put(fd.offset(), value);
} else {
report_error("unhandled staticfield");
}
}
}
#if INCLUDE_JVMTI
// JvmtiExport <field> <value>
void process_JvmtiExport(TRAPS) {
const char* field = parse_string();
bool value = parse_int("JvmtiExport flag") != 0;
if (strcmp(field, "can_access_local_variables") == 0) {
JvmtiExport::set_can_access_local_variables(value);
} else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
} else if (strcmp(field, "can_post_on_exceptions") == 0) {
JvmtiExport::set_can_post_on_exceptions(value);
} else {
report_error("Unrecognized JvmtiExport directive");
}
}
#endif // INCLUDE_JVMTI
// Create and initialize a record for a ciMethod
ciMethodRecord* new_ciMethod(Method* method) {
ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
rec->_klass_name = method->method_holder()->name()->as_utf8();
rec->_method_name = method->name()->as_utf8();
rec->_signature = method->signature()->as_utf8();
_ci_method_records.append(rec);
return rec;
}
// Lookup data for a ciMethod
ciMethodRecord* find_ciMethodRecord(Method* method) {
const char* klass_name = method->method_holder()->name()->as_utf8();
const char* method_name = method->name()->as_utf8();
const char* signature = method->signature()->as_utf8();
for (int i = 0; i < _ci_method_records.length(); i++) {
ciMethodRecord* rec = _ci_method_records.at(i);
if (strcmp(rec->_klass_name, klass_name) == 0 &&
strcmp(rec->_method_name, method_name) == 0 &&
strcmp(rec->_signature, signature) == 0) {
return rec;
}
}
return NULL;
}
// Create and initialize a record for a ciInstanceKlass which was present at replay dump time.
void new_ciInstanceKlass(const InstanceKlass* klass) {
ciInstanceKlassRecord* rec = NEW_RESOURCE_OBJ(ciInstanceKlassRecord);
rec->_klass = klass;
oop java_mirror = klass->java_mirror();
Handle h_java_mirror(_thread, java_mirror);
rec->_java_mirror = JNIHandles::make_global(h_java_mirror);
_ci_instance_klass_records.append(rec);
}
// Check if a ciInstanceKlass was present at replay dump time for a klass.
ciInstanceKlassRecord* find_ciInstanceKlass(const InstanceKlass* klass) {
for (int i = 0; i < _ci_instance_klass_records.length(); i++) {
ciInstanceKlassRecord* rec = _ci_instance_klass_records.at(i);
if (klass == rec->_klass) {
// ciInstanceKlass for this klass was resolved.
return rec;
}
}
return NULL;
}
// Create and initialize a record for a ciMethodData
ciMethodDataRecord* new_ciMethodData(Method* method) {
ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
rec->_klass_name = method->method_holder()->name()->as_utf8();
rec->_method_name = method->name()->as_utf8();
rec->_signature = method->signature()->as_utf8();
_ci_method_data_records.append(rec);
return rec;
}
// Lookup data for a ciMethodData
ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
const char* klass_name = method->method_holder()->name()->as_utf8();
const char* method_name = method->name()->as_utf8();
const char* signature = method->signature()->as_utf8();
for (int i = 0; i < _ci_method_data_records.length(); i++) {
ciMethodDataRecord* rec = _ci_method_data_records.at(i);
if (strcmp(rec->_klass_name, klass_name) == 0 &&
strcmp(rec->_method_name, method_name) == 0 &&
strcmp(rec->_signature, signature) == 0) {
return rec;
}
}
return NULL;
}
// Create and initialize a record for a ciInlineRecord
ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth, int inline_late) {
ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord);
rec->_klass_name = method->method_holder()->name()->as_utf8();
rec->_method_name = method->name()->as_utf8();
rec->_signature = method->signature()->as_utf8();
rec->_inline_bci = bci;
rec->_inline_depth = depth;
rec->_inline_late = inline_late;
_ci_inline_records->append(rec);
return rec;
}
// Lookup inlining data for a ciMethod
ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) {
if (_ci_inline_records != NULL) {
return find_ciInlineRecord(_ci_inline_records, method, bci, depth);
}
return NULL;
}
static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records,
Method* method, int bci, int depth) {
if (records != NULL) {
const char* klass_name = method->method_holder()->name()->as_utf8();
const char* method_name = method->name()->as_utf8();
const char* signature = method->signature()->as_utf8();
for (int i = 0; i < records->length(); i++) {
ciInlineRecord* rec = records->at(i);
if ((rec->_inline_bci == bci) &&
(rec->_inline_depth == depth) &&
(strcmp(rec->_klass_name, klass_name) == 0) &&
(strcmp(rec->_method_name, method_name) == 0) &&
(strcmp(rec->_signature, signature) == 0)) {
return rec;
}
}
}
return NULL;
}
const char* error_message() {
return _error_message;
}
void reset() {
_error_message = NULL;
_ci_method_records.clear();
_ci_method_data_records.clear();
}
// Take an ascii string contain \u#### escapes and convert it to utf8
// in place.
static void unescape_string(char* value) {
char* from = value;
char* to = value;
while (*from != '\0') {
if (*from != '\\') {
*from++ = *to++;
} else {
switch (from[1]) {
case 'u': {
from += 2;
jchar value=0;
for (int i=0; i<4; i++) {
char c = *from++;
switch (c) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
value = (value << 4) + c - '0';
break;
case 'a': case 'b': case 'c':
case 'd': case 'e': case 'f':
value = (value << 4) + 10 + c - 'a';
break;
case 'A': case 'B': case 'C':
case 'D': case 'E': case 'F':
value = (value << 4) + 10 + c - 'A';
break;
default:
ShouldNotReachHere();
}
}
UNICODE::convert_to_utf8(&value, 1, to);
to++;
break;
}
case 't': *to++ = '\t'; from += 2; break;
case 'n': *to++ = '\n'; from += 2; break;
case 'r': *to++ = '\r'; from += 2; break;
case 'f': *to++ = '\f'; from += 2; break;
default:
ShouldNotReachHere();
}
}
}
*from = *to;
}
};
void ciReplay::replay(TRAPS) {
int exit_code = replay_impl(THREAD);
Threads::destroy_vm();
vm_exit(exit_code);
}
bool ciReplay::no_replay_state() {
return replay_state == NULL;
}
void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) {
if (FLAG_IS_DEFAULT(InlineDataFile)) {
tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt).");
return NULL;
}
VM_ENTRY_MARK;
// Load and parse the replay data
CompileReplay rp(InlineDataFile, THREAD);
if (!rp.can_replay()) {
tty->print_cr("ciReplay: !rp.can_replay()");
return NULL;
}
void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD);
if (HAS_PENDING_EXCEPTION) {
Handle throwable(THREAD, PENDING_EXCEPTION);
CLEAR_PENDING_EXCEPTION;
java_lang_Throwable::print_stack_trace(throwable, tty);
tty->cr();
return NULL;
}
if (rp.had_error()) {
tty->print_cr("ciReplay: Failed on %s", rp.error_message());
return NULL;
}
return data;
}
int ciReplay::replay_impl(TRAPS) {
HandleMark hm(THREAD);
ResourceMark rm(THREAD);
if (ReplaySuppressInitializers > 2) {
// ReplaySuppressInitializers > 2 means that we want to allow
// normal VM bootstrap but once we get into the replay itself
// don't allow any initializers to be run.
ReplaySuppressInitializers = 1;
}
if (FLAG_IS_DEFAULT(ReplayDataFile)) {
tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
return 1;
}
// Load and parse the replay data
CompileReplay rp(ReplayDataFile, THREAD);
int exit_code = 0;
if (rp.can_replay()) {
rp.process(THREAD);
} else {
exit_code = 1;
return exit_code;
}
if (HAS_PENDING_EXCEPTION) {
Handle throwable(THREAD, PENDING_EXCEPTION);
CLEAR_PENDING_EXCEPTION;
java_lang_Throwable::print_stack_trace(throwable, tty);
tty->cr();
exit_code = 2;
}
if (rp.had_error()) {
tty->print_cr("Failed on %s", rp.error_message());
exit_code = 1;
}
return exit_code;
}
void ciReplay::initialize(ciMethodData* m) {
if (no_replay_state()) {
return;
}
ASSERT_IN_VM;
ResourceMark rm;
Method* method = m->get_MethodData()->method();
ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
if (rec == NULL) {
// This indicates some mismatch with the original environment and
// the replay environment though it's not always enough to
// interfere with reproducing a bug
tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
method->print_name(tty);
tty->cr();
} else {
m->_state = rec->_state;
m->_invocation_counter = rec->_invocation_counter;
if (rec->_data_length != 0) {
assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) ||
m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree");
// Write the correct ciObjects back into the profile data
ciEnv* env = ciEnv::current();
for (int i = 0; i < rec->_classes_length; i++) {
Klass *k = rec->_classes[i];
// In case this class pointer is is tagged, preserve the tag bits
intptr_t status = 0;
if (k != NULL) {
status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]);
}
rec->_data[rec->_classes_offsets[i]] = status;
}
for (int i = 0; i < rec->_methods_length; i++) {
Method *m = rec->_methods[i];
*(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) =
env->get_metadata(m);
}
// Copy the updated profile data into place as intptr_ts
#ifdef _LP64
Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length);
#else
Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length);
#endif
}
// copy in the original header
Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length);
}
}
bool ciReplay::should_not_inline(ciMethod* method) {
if (no_replay_state()) {
return false;
}
VM_ENTRY_MARK;
// ciMethod without a record shouldn't be inlined.
return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
}
bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth, bool& should_delay) {
if (data != NULL) {
GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
VM_ENTRY_MARK;
// Inline record are ordered by bci and depth.
ciInlineRecord* record = CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth);
if (record == NULL) {
return false;
}
should_delay = record->_inline_late;
return true;
} else if (replay_state != NULL) {
VM_ENTRY_MARK;
// Inline record are ordered by bci and depth.
ciInlineRecord* record = replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth);
if (record == NULL) {
return false;
}
should_delay = record->_inline_late;
return true;
}
return false;
}
bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) {
if (data != NULL) {
GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data;
VM_ENTRY_MARK;
// Inline record are ordered by bci and depth.
return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL;
} else if (replay_state != NULL) {
VM_ENTRY_MARK;
// Inline record are ordered by bci and depth.
return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL;
}
return false;
}
void ciReplay::initialize(ciMethod* m) {
if (no_replay_state()) {
return;
}
ASSERT_IN_VM;
ResourceMark rm;
Method* method = m->get_Method();
ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
if (rec == NULL) {
// This indicates some mismatch with the original environment and
// the replay environment though it's not always enough to
// interfere with reproducing a bug
tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
method->print_name(tty);
tty->cr();
} else {
EXCEPTION_CONTEXT;
// m->_instructions_size = rec->_instructions_size;
m->_instructions_size = -1;
m->_interpreter_invocation_count = rec->_interpreter_invocation_count;
m->_interpreter_throwout_count = rec->_interpreter_throwout_count;
MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
guarantee(mcs != NULL, "method counters allocation failed");
mcs->invocation_counter()->_counter = rec->_invocation_counter;
mcs->backedge_counter()->_counter = rec->_backedge_counter;
}
}
void ciReplay::initialize(ciInstanceKlass* ci_ik, InstanceKlass* ik) {
assert(!no_replay_state(), "must have replay state");
ASSERT_IN_VM;
ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(ik);
assert(rec != NULL, "ciInstanceKlass must be whitelisted");
ci_ik->_java_mirror = CURRENT_ENV->get_instance(JNIHandles::resolve(rec->_java_mirror));
}
bool ciReplay::is_loaded(Method* method) {
if (no_replay_state()) {
return true;
}
ASSERT_IN_VM;
ResourceMark rm;
ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
return rec != NULL;
}
bool ciReplay::is_klass_unresolved(const InstanceKlass* klass) {
if (no_replay_state()) {
return false;
}
// Check if klass is found on whitelist.
ciInstanceKlassRecord* rec = replay_state->find_ciInstanceKlass(klass);
return rec == NULL;
}
oop ciReplay::obj_field(oop obj, Symbol* name) {
InstanceKlass* ik = InstanceKlass::cast(obj->klass());
do {
if (!ik->has_nonstatic_fields()) {
ik = ik->java_super();
continue;
}
for (JavaFieldStream fs(ik); !fs.done(); fs.next()) {
if (fs.access_flags().is_static()) {
continue;
}
if (fs.name() == name) {
int offset = fs.offset();
#ifdef ASSERT
fieldDescriptor fd = fs.field_descriptor();
assert(fd.offset() == ik->field_offset(fd.index()), "!");
#endif
oop f = obj->obj_field(offset);
return f;
}
}
ik = ik->java_super();
} while (ik != NULL);
return NULL;
}
oop ciReplay::obj_field(oop obj, const char *name) {
Symbol* fname = SymbolTable::probe(name, (int)strlen(name));
if (fname == NULL) {
return NULL;
}
return obj_field(obj, fname);
}
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