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/*
* Copyright (c) 2011, 2020, 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.
*/
#ifndef SHARE_JVMCI_JVMCICOMPILER_HPP
#define SHARE_JVMCI_JVMCICOMPILER_HPP
#include "compiler/abstractCompiler.hpp"
#include "compiler/compiler_globals.hpp"
#include "runtime/atomic.hpp"
class JVMCICompiler : public AbstractCompiler {
public:
// Code installation specific statistics.
class CodeInstallStats {
private:
elapsedTimer _timer;
volatile int _count;
volatile int _codeBlobs_size;
volatile int _codeBlobs_code_size;
public:
CodeInstallStats() :
_count(0),
_codeBlobs_size(0),
_codeBlobs_code_size(0)
{}
elapsedTimer* timer() { return &_timer; }
void print_on(outputStream* st, const char* prefix) const;
// Notifies this object that `cb` has just been
// installed in the code cache.
void on_install(CodeBlob* cb);
};
private:
bool _bootstrapping;
/**
* True if we have seen a bootstrap compilation request.
*/
volatile bool _bootstrap_compilation_request_handled;
/**
* Number of methods successfully compiled by a call to
* JVMCICompiler::compile_method().
*/
volatile int _methods_compiled;
// Incremented periodically by JVMCI compiler threads
// to indicate JVMCI compilation activity.
volatile int _global_compilation_ticks;
static JVMCICompiler* _instance;
CodeInstallStats _jit_code_installs; // CompileBroker compilations
CodeInstallStats _hosted_code_installs; // Non-CompileBroker compilations
/**
* Exits the VM due to an unexpected exception.
*/
static void exit_on_pending_exception(oop exception, const char* message);
public:
JVMCICompiler();
static JVMCICompiler* instance(bool require_non_null, TRAPS);
virtual const char* name() { return UseJVMCINativeLibrary ? "JVMCI-native" : "JVMCI"; }
bool is_jvmci() { return true; }
bool is_c1 () { return false; }
bool is_c2 () { return false; }
bool needs_stubs () { return false; }
// Initialization
virtual void initialize();
/**
* Initialize the compile queue with the methods in java.lang.Object and
* then wait until the queue is empty.
*/
void bootstrap(TRAPS);
// Should force compilation of method at CompLevel_simple?
bool force_comp_at_level_simple(const methodHandle& method);
bool is_bootstrapping() const { return _bootstrapping; }
void set_bootstrap_compilation_request_handled() {
_instance->_bootstrap_compilation_request_handled = true;
}
// Compilation entry point for methods
virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci, bool install_code, DirectiveSet* directive);
virtual void stopping_compiler_thread(CompilerThread* current);
virtual void on_empty_queue(CompileQueue* queue, CompilerThread* thread);
// Print compilation timers and statistics
virtual void print_timers();
// Gets the number of methods that have been successfully compiled by
// a call to JVMCICompiler::compile_method().
int methods_compiled() { return _methods_compiled; }
void inc_methods_compiled();
// Gets a value indicating JVMCI compilation activity on any thread.
// If successive calls to this method return a different value, then
// some degree of JVMCI compilation occurred between the calls.
int global_compilation_ticks() const { return _global_compilation_ticks; }
void inc_global_compilation_ticks();
CodeInstallStats* code_install_stats(bool hosted) {
if (!hosted) {
return &_jit_code_installs;
} else {
return &_hosted_code_installs;
}
}
};
#endif // SHARE_JVMCI_JVMCICOMPILER_HPP
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