namespace v8 {
namespace internal {
+class OptimizingCompilerThread::CompileTask : public v8::Task {
+ public:
+ CompileTask(Isolate* isolate, OptimizedCompileJob* job)
+ : isolate_(isolate), job_(job) {}
+
+ virtual ~CompileTask() {}
+
+ private:
+ // v8::Task overrides.
+ virtual void Run() OVERRIDE {
+ Isolate::SetIsolateThreadLocals(isolate_, NULL);
+ DisallowHeapAllocation no_allocation;
+ DisallowHandleAllocation no_handles;
+ DisallowHandleDereference no_deref;
+
+ // The function may have already been optimized by OSR. Simply continue.
+ OptimizedCompileJob::Status status = job_->OptimizeGraph();
+ USE(status); // Prevent an unused-variable error in release mode.
+ DCHECK(status != OptimizedCompileJob::FAILED);
+
+ // The function may have already been optimized by OSR. Simply continue.
+ // Use a mutex to make sure that functions marked for install
+ // are always also queued.
+ {
+ base::LockGuard<base::Mutex> lock_guard(
+ &isolate_->optimizing_compiler_thread()->output_queue_mutex_);
+ isolate_->optimizing_compiler_thread()->output_queue_.Enqueue(job_);
+ }
+ isolate_->stack_guard()->RequestInstallCode();
+ {
+ base::LockGuard<base::Mutex> lock_guard(
+ &isolate_->optimizing_compiler_thread()->input_queue_mutex_);
+ isolate_->optimizing_compiler_thread()->input_queue_length_--;
+ }
+ isolate_->optimizing_compiler_thread()->input_queue_semaphore_.Signal();
+ }
+
+ Isolate* isolate_;
+ OptimizedCompileJob* job_;
+
+ DISALLOW_COPY_AND_ASSIGN(CompileTask);
+};
+
+
OptimizingCompilerThread::~OptimizingCompilerThread() {
DCHECK_EQ(0, input_queue_length_);
DeleteArray(input_queue_);
DisallowHandleAllocation no_handles;
DisallowHandleDereference no_deref;
+ if (FLAG_job_based_recompilation) {
+ return;
+ }
+
base::ElapsedTimer total_timer;
if (FLAG_trace_concurrent_recompilation) total_timer.Start();
OptimizedCompileJob* OptimizingCompilerThread::NextInput() {
base::LockGuard<base::Mutex> access_input_queue_(&input_queue_mutex_);
+ DCHECK(!FLAG_job_based_recompilation);
if (input_queue_length_ == 0) return NULL;
OptimizedCompileJob* job = input_queue_[InputQueueIndex(0)];
DCHECK_NE(NULL, job);
void OptimizingCompilerThread::FlushInputQueue(bool restore_function_code) {
+ DCHECK(!FLAG_job_based_recompilation);
OptimizedCompileJob* job;
while ((job = NextInput())) {
// This should not block, since we have one signal on the input queue
DCHECK(!IsOptimizerThread());
base::Release_Store(&stop_thread_, static_cast<base::AtomicWord>(FLUSH));
if (FLAG_block_concurrent_recompilation) Unblock();
- input_queue_semaphore_.Signal();
- stop_semaphore_.Wait();
+ if (!FLAG_job_based_recompilation) {
+ input_queue_semaphore_.Signal();
+ stop_semaphore_.Wait();
+ }
FlushOutputQueue(true);
if (FLAG_concurrent_osr) FlushOsrBuffer(true);
if (FLAG_trace_concurrent_recompilation) {
DCHECK(!IsOptimizerThread());
base::Release_Store(&stop_thread_, static_cast<base::AtomicWord>(STOP));
if (FLAG_block_concurrent_recompilation) Unblock();
- input_queue_semaphore_.Signal();
- stop_semaphore_.Wait();
+ if (!FLAG_job_based_recompilation) {
+ input_queue_semaphore_.Signal();
+ stop_semaphore_.Wait();
+ }
- if (FLAG_concurrent_recompilation_delay != 0) {
+ if (FLAG_job_based_recompilation) {
+ while (true) {
+ {
+ base::LockGuard<base::Mutex> access_input_queue(&input_queue_mutex_);
+ if (!input_queue_length_) break;
+ }
+ input_queue_semaphore_.Wait();
+ }
+ } else if (FLAG_concurrent_recompilation_delay != 0) {
// At this point the optimizing compiler thread's event loop has stopped.
// There is no need for a mutex when reading input_queue_length_.
while (input_queue_length_ > 0) CompileNext();
input_queue_[InputQueueIndex(input_queue_length_)] = job;
input_queue_length_++;
}
- if (FLAG_block_concurrent_recompilation) {
+ if (FLAG_job_based_recompilation) {
+ V8::GetCurrentPlatform()->CallOnBackgroundThread(
+ new CompileTask(isolate_, job), v8::Platform::kShortRunningTask);
+ } else if (FLAG_block_concurrent_recompilation) {
blocked_jobs_++;
} else {
input_queue_semaphore_.Signal();
void OptimizingCompilerThread::Unblock() {
DCHECK(!IsOptimizerThread());
+ if (FLAG_job_based_recompilation) {
+ return;
+ }
while (blocked_jobs_ > 0) {
input_queue_semaphore_.Signal();
blocked_jobs_--;