693c7643d2
BUG= TEST= Review URL: https://chromiumcodereview.appspot.com/10807024 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12148 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "optimizing-compiler-thread.h"
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#include "v8.h"
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#include "hydrogen.h"
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#include "isolate.h"
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#include "v8threads.h"
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namespace v8 {
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namespace internal {
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void OptimizingCompilerThread::Run() {
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#ifdef DEBUG
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thread_id_ = ThreadId::Current().ToInteger();
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#endif
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Isolate::SetIsolateThreadLocals(isolate_, NULL);
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while (true) {
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input_queue_semaphore_->Wait();
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if (Acquire_Load(&stop_thread_)) {
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stop_semaphore_->Signal();
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return;
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}
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Heap::RelocationLock relocation_lock(isolate_->heap());
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OptimizingCompiler* optimizing_compiler = NULL;
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input_queue_.Dequeue(&optimizing_compiler);
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Barrier_AtomicIncrement(&queue_length_, static_cast<Atomic32>(-1));
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ASSERT(!optimizing_compiler->info()->closure()->IsOptimized());
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OptimizingCompiler::Status status = optimizing_compiler->OptimizeGraph();
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ASSERT(status != OptimizingCompiler::FAILED);
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// Prevent an unused-variable error in release mode.
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(void) status;
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output_queue_.Enqueue(optimizing_compiler);
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isolate_->stack_guard()->RequestCodeReadyEvent();
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}
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}
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void OptimizingCompilerThread::Stop() {
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Release_Store(&stop_thread_, static_cast<AtomicWord>(true));
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input_queue_semaphore_->Signal();
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stop_semaphore_->Wait();
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}
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void OptimizingCompilerThread::InstallOptimizedFunctions() {
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HandleScope handle_scope(isolate_);
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int functions_installed = 0;
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while (!output_queue_.IsEmpty()) {
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OptimizingCompiler* compiler = NULL;
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output_queue_.Dequeue(&compiler);
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Compiler::InstallOptimizedCode(compiler);
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functions_installed++;
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}
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if (FLAG_trace_parallel_recompilation && functions_installed != 0) {
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PrintF(" ** Installed %d function(s).\n", functions_installed);
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}
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}
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void OptimizingCompilerThread::QueueForOptimization(
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OptimizingCompiler* optimizing_compiler) {
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input_queue_.Enqueue(optimizing_compiler);
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input_queue_semaphore_->Signal();
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}
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#ifdef DEBUG
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bool OptimizingCompilerThread::IsOptimizerThread() {
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if (!FLAG_parallel_recompilation) return false;
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return ThreadId::Current().ToInteger() == thread_id_;
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}
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#endif
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} } // namespace v8::internal
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