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Allocate optimizing compiler thread only when necessary.

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R=ulan@chromium.org
BUG=

Review URL: https://codereview.chromium.org/24568003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16946 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
yangguo@chromium.org 2013-09-25 15:14:12 +00:00
parent 612dedc781
commit 64bcae30f9
2 changed files with 12 additions and 6 deletions
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14
src/isolate.cc
View File

@ -1803,7 +1803,7 @@ Isolate::Isolate()
heap_profiler_(NULL),
function_entry_hook_(NULL),
deferred_handles_head_(NULL),
optimizing_compiler_thread_(this),
optimizing_compiler_thread_(NULL),
marking_thread_(NULL),
sweeper_thread_(NULL),
stress_deopt_count_(0) {
@ -1898,7 +1898,10 @@ void Isolate::Deinit() {
debugger()->UnloadDebugger();
#endif
if (FLAG_concurrent_recompilation) optimizing_compiler_thread_.Stop();
if (FLAG_concurrent_recompilation) {
optimizing_compiler_thread_->Stop();
delete optimizing_compiler_thread_;
}
if (FLAG_sweeper_threads > 0) {
for (int i = 0; i < FLAG_sweeper_threads; i++) {
@ -2240,6 +2243,11 @@ bool Isolate::Init(Deserializer* des) {
deoptimizer_data_ = new DeoptimizerData(memory_allocator_);
if (FLAG_concurrent_recompilation) {
optimizing_compiler_thread_ = new OptimizingCompilerThread(this);
optimizing_compiler_thread_->Start();
}
const bool create_heap_objects = (des == NULL);
if (create_heap_objects && !heap_.CreateHeapObjects()) {
V8::FatalProcessOutOfMemory("heap object creation");
@ -2346,8 +2354,6 @@ bool Isolate::Init(Deserializer* des) {
FastNewClosureStub::InstallDescriptors(this);
}
if (FLAG_concurrent_recompilation) optimizing_compiler_thread_.Start();
if (FLAG_marking_threads > 0) {
marking_thread_ = new MarkingThread*[FLAG_marking_threads];
for (int i = 0; i < FLAG_marking_threads; i++) {

4
src/isolate.h
View File

@ -1099,7 +1099,7 @@ class Isolate {
#endif // DEBUG
OptimizingCompilerThread* optimizing_compiler_thread() {
return &optimizing_compiler_thread_;
return optimizing_compiler_thread_;
}
// PreInits and returns a default isolate. Needed when a new thread tries
@ -1369,7 +1369,7 @@ class Isolate {
#endif
DeferredHandles* deferred_handles_head_;
OptimizingCompilerThread optimizing_compiler_thread_;
OptimizingCompilerThread* optimizing_compiler_thread_;
MarkingThread** marking_thread_;
SweeperThread** sweeper_thread_;