Quellcode-Bibliothek

^© Kompilation durch diese Firma

[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]

Datei: jfrJavaCall.cpp Sprache: C

/*
* Copyright (c) 2017, 2019, 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/symbolTable.hpp"
#include "classfile/systemDictionary.hpp"
#include "jfr/jni/jfrJavaCall.hpp"
#include "jfr/jni/jfrJavaSupport.hpp"
#include "memory/resourceArea.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/javaCalls.hpp"
#include "utilities/globalDefinitions.hpp"

#ifdef ASSERT
static bool is_large_value(const JavaValue& value) {
  return value.get_type() == T_LONG || value.get_type() == T_DOUBLE;
}
#endif // ASSERT

static Symbol* resolve(const char* str) {
  assert(str != NULL, "invariant");
  return SymbolTable::new_symbol(str);
}

static Klass* resolve(Symbol* k_sym, TRAPS) {
  assert(k_sym != NULL, "invariant");
  return SystemDictionary::resolve_or_fail(k_sym, true, THREAD);
}

JfrJavaArguments::Parameters::Parameters() : _storage_index(0), _java_stack_slots(0) {
  JavaValue value(T_VOID);
  push(value);
}

void JfrJavaArguments::Parameters::push(const JavaValue& value) {
  assert(_storage != NULL, "invariant");
  assert(!is_large_value(value), "invariant");
  assert(_storage_index < SIZE, "invariant");
  _storage[_storage_index++] = value;
  _java_stack_slots++;
}

void JfrJavaArguments::Parameters::push_large(const JavaValue& value) {
  assert(_storage != NULL, "invariant");
  assert(is_large_value(value), "invariant");
  assert(_storage_index < SIZE, "invariant");
  _storage[_storage_index++] = value;
  _java_stack_slots += 2;
}

void JfrJavaArguments::Parameters::set_receiver(const oop receiver) {
  assert(_storage != NULL, "invariant");
  assert(receiver != NULL, "invariant");
  JavaValue value(T_OBJECT);
  value.set_oop(receiver);
  _storage[0] = value;
}

void JfrJavaArguments::Parameters::set_receiver(Handle receiver) {
  set_receiver(receiver());
}

oop JfrJavaArguments::Parameters::receiver() const {
  assert(has_receiver(), "invariant");
  assert(_storage[0].get_type() == T_OBJECT, "invariant");
  return _storage[0].get_oop();
}

bool JfrJavaArguments::Parameters::has_receiver() const {
  assert(_storage != NULL, "invariant");
  assert(_storage_index >= 1, "invariant");
  assert(_java_stack_slots >= 1, "invariant");
  return _storage[0].get_type() == T_OBJECT;
}

void JfrJavaArguments::Parameters::push_oop(const oop obj) {
  JavaValue value(T_OBJECT);
  value.set_oop(obj);
  push(value);
}

void JfrJavaArguments::Parameters::push_oop(Handle h_obj) {
  push_oop(h_obj());
}

void JfrJavaArguments::Parameters::push_jobject(jobject h) {
  JavaValue value(T_ADDRESS);
  value.set_jobject(h);
  push(value);
}

void JfrJavaArguments::Parameters::push_jint(jint i) {
  JavaValue value(T_INT);
  value.set_jint(i);
  push(value);
}

void JfrJavaArguments::Parameters::push_jfloat(jfloat f) {
  JavaValue value(T_FLOAT);
  value.set_jfloat(f);
  push(value);
}

void JfrJavaArguments::Parameters::push_jdouble(jdouble d) {
  JavaValue value(T_DOUBLE);
  value.set_jdouble(d);
  push_large(value);
}

void JfrJavaArguments::Parameters::push_jlong(jlong l) {
  JavaValue value(T_LONG);
  value.set_jlong(l);
  push_large(value);
}

// including receiver (even if there is none)
inline int JfrJavaArguments::Parameters::length() const {
  assert(_storage_index >= 1, "invariant");
  return _storage_index;
}

inline int JfrJavaArguments::Parameters::java_stack_slots() const {
  return _java_stack_slots;
}

const JavaValue& JfrJavaArguments::Parameters::values(int idx) const {
  assert(idx >= 0, "invariant");
  assert(idx < SIZE, "invariant");
  return _storage[idx];
}

void JfrJavaArguments::Parameters::copy(JavaCallArguments& args, TRAPS) const {
  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
  if (has_receiver()) {
    args.set_receiver(Handle(THREAD, receiver()));
  }
  for (int i = 1; i < length(); ++i) {
    switch(values(i).get_type()) {
      case T_BOOLEAN:
      case T_CHAR:
      case T_SHORT:
      case T_INT:
        args.push_int(values(i).get_jint());
        break;
      case T_LONG:
        args.push_long(values(i).get_jlong());
        break;
      case T_FLOAT:
        args.push_float(values(i).get_jfloat());
        break;
      case T_DOUBLE:
        args.push_double(values(i).get_jdouble());
        break;
      case T_OBJECT:
        args.push_oop(Handle(THREAD, values(i).get_oop()));
        break;
      case T_ADDRESS:
        args.push_jobject(values(i).get_jobject());
        break;
      default:
        ShouldNotReachHere();
    }
  }
}

JfrJavaArguments::JfrJavaArguments(JavaValue* result) : _result(result), _klass(NULL), _name(NULL), _signature(NULL), _array_length(-1) {
  assert(result != NULL, "invariant");
}

JfrJavaArguments::JfrJavaArguments(JavaValue* result, const char* klass_name, const char* name, const char* signature, TRAPS) :
  _result(result),
  _klass(NULL),
  _name(NULL),
  _signature(NULL),
  _array_length(-1) {
  assert(result != NULL, "invariant");
  if (klass_name != NULL) {
    set_klass(klass_name, CHECK);
  }
  if (name != NULL) {
    set_name(name);
  }
  if (signature != NULL) {
    set_signature(signature);
  }
}

JfrJavaArguments::JfrJavaArguments(JavaValue* result, const Klass* klass, const Symbol* name, const Symbol* signature) : _result(result),
  _klass(NULL),
  _name(NULL),
  _signature(NULL),
  _array_length(-1) {
  assert(result != NULL, "invariant");
  if (klass != NULL) {
    set_klass(klass);
  }
  if (name != NULL) {
    set_name(name);
  }
  if (signature != NULL) {
    set_signature(signature);
  }
}

Klass* JfrJavaArguments::klass() const {
  assert(_klass != NULL, "invariant");
  return const_cast<Klass*>(_klass);
}

void JfrJavaArguments::set_klass(const char* klass_name, TRAPS) {
  assert(klass_name != NULL, "invariant");
  Symbol* const k_sym = resolve(klass_name);
  assert(k_sym != NULL, "invariant");
  const Klass* const klass = resolve(k_sym, CHECK);
  set_klass(klass);
}

void JfrJavaArguments::set_klass(const Klass* klass) {
  assert(klass != NULL, "invariant");
  _klass = klass;
}

Symbol* JfrJavaArguments::name() const {
  assert(_name != NULL, "invariant");
  return const_cast<Symbol*>(_name);
}

void JfrJavaArguments::set_name(const char* name) {
  assert(name != NULL, "invariant");
  const Symbol* const sym = resolve(name);
  set_name(sym);
}

void JfrJavaArguments::set_name(const Symbol* name) {
  assert(name != NULL, "invariant");
  _name = name;
}

Symbol* JfrJavaArguments::signature() const {
  assert(_signature != NULL, "invariant");
  return const_cast<Symbol*>(_signature);
}

void JfrJavaArguments::set_signature(const char* signature) {
  assert(signature != NULL, "invariant");
  const Symbol* const sym = resolve(signature);
  set_signature(sym);
}

void JfrJavaArguments::set_signature(const Symbol* signature) {
  assert(signature != NULL, "invariant");
  _signature = signature;
}

int JfrJavaArguments::array_length() const {
  return _array_length;
}

void JfrJavaArguments::set_array_length(int length) {
  assert(length >= 0, "invariant");
  _array_length = length;
}

JavaValue* JfrJavaArguments::result() const {
  assert(_result != NULL, "invariant");
  return const_cast<JavaValue*>(_result);
}

int JfrJavaArguments::length() const {
  return _params.length();
}

bool JfrJavaArguments::has_receiver() const {
  return _params.has_receiver();
}

oop JfrJavaArguments::receiver() const {
  return _params.receiver();
}

void JfrJavaArguments::set_receiver(const oop receiver) {
  _params.set_receiver(receiver);
}

void JfrJavaArguments::set_receiver(Handle receiver) {
  _params.set_receiver(receiver);
}

void JfrJavaArguments::push_oop(const oop obj) {
  _params.push_oop(obj);
}

void JfrJavaArguments::push_oop(Handle h_obj) {
  _params.push_oop(h_obj);
}

void JfrJavaArguments::push_jobject(jobject h) {
  _params.push_jobject(h);
}

void JfrJavaArguments::push_int(jint i) {
  _params.push_jint(i);
}

void JfrJavaArguments::push_float(jfloat f) {
  _params.push_jfloat(f);
}

void JfrJavaArguments::push_double(jdouble d) {
  _params.push_jdouble(d);
}

void JfrJavaArguments::push_long(jlong l) {
  _params.push_jlong(l);
}

const JavaValue& JfrJavaArguments::param(int idx) const {
  return _params.values(idx);
}

int JfrJavaArguments::java_call_arg_slots() const {
  return _params.java_stack_slots();
}

void JfrJavaArguments::copy(JavaCallArguments& args, TRAPS) {
  _params.copy(args, THREAD);
}

void JfrJavaCall::call_static(JfrJavaArguments* args, TRAPS) {
  assert(args != NULL, "invariant");
  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
  ResourceMark rm(THREAD);
  HandleMark hm(THREAD);
  JavaCallArguments jcas(args->java_call_arg_slots());
  args->copy(jcas, CHECK);
  JavaCalls::call_static(args->result(), args->klass(), args->name(), args->signature(), &jcas, THREAD);
}

void JfrJavaCall::call_special(JfrJavaArguments* args, TRAPS) {
  assert(args != NULL, "invariant");
  assert(args->has_receiver(), "invariant");
  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
  ResourceMark rm(THREAD);
  HandleMark hm(THREAD);
  JavaCallArguments jcas(args->java_call_arg_slots());
  args->copy(jcas, CHECK);
  JavaCalls::call_special(args->result(), args->klass(), args->name(), args->signature(), &jcas, THREAD);
}

void JfrJavaCall::call_virtual(JfrJavaArguments* args, TRAPS) {
  assert(args != NULL, "invariant");
  assert(args->has_receiver(), "invariant");
  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
  ResourceMark rm(THREAD);
  HandleMark hm(THREAD);
  JavaCallArguments jcas(args->java_call_arg_slots());
  args->copy(jcas, CHECK);
  JavaCalls::call_virtual(args->result(), args->klass(), args->name(), args->signature(), &jcas, THREAD);
}

¤ Dauer der Verarbeitung: 0.17 Sekunden (vorverarbeitet) ¤

Download des Quellennavigators
Download des sprechenden Kalenders
in der Quellcodebibliothek suchen

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.