/*
* Copyright (c) 2011, 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 "jvm.h"
#include "memory/oopFactory.hpp"
#include "memory/resourceArea.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/javaCalls.hpp"
#include "runtime/handles.hpp"
#include "jvmci/jvmciJavaClasses.hpp"
#include "jvmci/jvmciCompiler.hpp"
#include "jvmci/jvmciEnv.hpp"
#include "jvmci/jvmciRuntime.hpp"
#include "runtime/compilationPolicy.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/handles.inline.hpp"
JVMCICompiler* JVMCICompiler::_instance = NULL;
elapsedTimer JVMCICompiler::_codeInstallTimer;
JVMCICompiler::JVMCICompiler() : AbstractCompiler(compiler_jvmci) {
_bootstrapping = false;
_bootstrap_compilation_request_handled = false;
_methods_compiled = 0;
assert(_instance == NULL, "only one instance allowed");
_instance = this;
}
// Initialization
void JVMCICompiler::initialize() {
if (!UseCompiler || !EnableJVMCI || !UseJVMCICompiler || !should_perform_init()) {
return;
}
set_state(initialized);
}
void JVMCICompiler::bootstrap(TRAPS) {
if (Arguments::mode() == Arguments::_int) {
// Nothing to do in -Xint mode
return;
}
_bootstrapping = true;
ResourceMark rm;
HandleMark hm;
if (PrintBootstrap) {
tty->print("Bootstrapping JVMCI");
}
jlong start = os::javaTimeMillis();
Array<Method*>* objectMethods = SystemDictionary::Object_klass()->methods();
// Initialize compile queue with a selected set of methods.
int len = objectMethods->length();
for (int i = 0; i < len; i++) {
methodHandle mh = objectMethods->at(i);
if (!mh->is_native() && !mh->is_static() && !mh->is_initializer()) {
ResourceMark rm;
int hot_count = 10; // TODO: what's the appropriate value?
CompileBroker::compile_method(mh, InvocationEntryBci, CompLevel_full_optimization, mh, hot_count, CompileTask::Reason_Bootstrap, THREAD);
}
}
int qsize;
bool first_round = true;
int z = 0;
do {
// Loop until there is something in the queue.
do {
os::sleep(THREAD, 100, true);
qsize = CompileBroker::queue_size(CompLevel_full_optimization);
} while (!_bootstrap_compilation_request_handled && first_round && qsize == 0);
first_round = false;
if (PrintBootstrap) {
while (z < (_methods_compiled / 100)) {
++z;
tty->print_raw(".");
}
}
} while (qsize != 0);
if (PrintBootstrap) {
tty->print_cr(" in " JLONG_FORMAT " ms (compiled %d methods)", os::javaTimeMillis() - start, _methods_compiled);
}
_bootstrapping = false;
JVMCIRuntime::bootstrap_finished(CHECK);
}
#define CHECK_EXIT THREAD); \
if (HAS_PENDING_EXCEPTION) { \
char buf[256]; \
jio_snprintf(buf, 256, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
JVMCICompiler::exit_on_pending_exception(PENDING_EXCEPTION, buf); \
return; \
} \
(void)(0
void JVMCICompiler::compile_method(const methodHandle& method, int entry_bci, JVMCIEnv* env) {
JVMCI_EXCEPTION_CONTEXT
bool is_osr = entry_bci != InvocationEntryBci;
if (_bootstrapping && is_osr) {
// no OSR compilations during bootstrap - the compiler is just too slow at this point,
// and we know that there are no endless loops
env->set_failure(true, "No OSR during boostrap");
return;
}
JVMCIRuntime::initialize_well_known_classes(CHECK_EXIT);
HandleMark hm;
Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_EXIT);
JavaValue method_result(T_OBJECT);
JavaCallArguments args;
args.push_long((jlong) (address) method());
JavaCalls::call_static(&method_result, SystemDictionary::HotSpotResolvedJavaMethodImpl_klass(),
vmSymbols::fromMetaspace_name(), vmSymbols::method_fromMetaspace_signature(), &args, THREAD);
JavaValue result(T_OBJECT);
if (!HAS_PENDING_EXCEPTION) {
JavaCallArguments args;
args.push_oop(receiver);
args.push_oop(Handle(THREAD, (oop)method_result.get_jobject()));
args.push_int(entry_bci);
args.push_long((jlong) (address) env);
args.push_int(env->task()->compile_id());
JavaCalls::call_special(&result, receiver->klass(),
vmSymbols::compileMethod_name(), vmSymbols::compileMethod_signature(), &args, THREAD);
}
// An uncaught exception was thrown during compilation. Generally these
// should be handled by the Java code in some useful way but if they leak
// through to here report them instead of dying or silently ignoring them.
if (HAS_PENDING_EXCEPTION) {
Handle exception(THREAD, PENDING_EXCEPTION);
CLEAR_PENDING_EXCEPTION;
java_lang_Throwable::java_printStackTrace(exception, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
}
env->set_failure(false, "unexpected exception thrown");
} else {
oop result_object = (oop) result.get_jobject();
if (result_object != NULL) {
oop failure_message = HotSpotCompilationRequestResult::failureMessage(result_object);
if (failure_message != NULL) {
// Copy failure reason into resource memory first ...
const char* failure_reason = java_lang_String::as_utf8_string(failure_message);
// ... and then into the C heap.
failure_reason = os::strdup(failure_reason, mtCompiler);
bool retryable = HotSpotCompilationRequestResult::retry(result_object) != 0;
env->set_failure(retryable, failure_reason, true);
} else {
if (env->task()->code() == NULL) {
env->set_failure(true, "no nmethod produced");
} else {
env->task()->set_num_inlined_bytecodes(HotSpotCompilationRequestResult::inlinedBytecodes(result_object));
Atomic::inc(&_methods_compiled);
}
}
} else {
assert(false, "JVMCICompiler.compileMethod should always return non-null");
}
}
if (_bootstrapping) {
_bootstrap_compilation_request_handled = true;
}
}
CompLevel JVMCIRuntime::adjust_comp_level(const methodHandle& method, bool is_osr, CompLevel level, JavaThread* thread) {
if (!thread->adjusting_comp_level()) {
thread->set_adjusting_comp_level(true);
level = adjust_comp_level_inner(method, is_osr, level, thread);
thread->set_adjusting_comp_level(false);
}
return level;
}
void JVMCICompiler::exit_on_pending_exception(oop exception, const char* message) {
JavaThread* THREAD = JavaThread::current();
CLEAR_PENDING_EXCEPTION;
static volatile int report_error = 0;
if (!report_error && Atomic::cmpxchg(1, &report_error, 0) == 0) {
// Only report an error once
tty->print_raw_cr(message);
Handle ex(THREAD, exception);
java_lang_Throwable::java_printStackTrace(ex, THREAD);
} else {
// Allow error reporting thread to print the stack trace. Windows
// doesn't allow uninterruptible wait for JavaThreads
const bool interruptible = true;
os::sleep(THREAD, 200, interruptible);
}
before_exit(THREAD);
vm_exit(-1);
}
// Compilation entry point for methods
void JVMCICompiler::compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive) {
ShouldNotReachHere();
}
// Print compilation timers and statistics
void JVMCICompiler::print_timers() {
print_compilation_timers();
}
// Print compilation timers and statistics
void JVMCICompiler::print_compilation_timers() {
TRACE_jvmci_1("JVMCICompiler::print_timers");
tty->print_cr(" JVMCI code install time: %6.3f s", _codeInstallTimer.seconds());
}