Fix data race when concurrent compilation is aborted due to dependency change.

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
@@ skipping 34 matching lines @@
 
 
 CompilationInfo::CompilationInfo(Handle<Script> script, Zone* zone)
     : flags_(kThisHasUses),
       script_(script),
       source_stream_(NULL),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       optimization_id_(-1),
       ast_value_factory_(NULL),
-      ast_value_factory_owned_(false) {
+      ast_value_factory_owned_(false),
+      aborted_due_to_dependency_change_(false) {
   Initialize(script->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(Isolate* isolate, Zone* zone)
     : flags_(kThisHasUses),
       script_(Handle<Script>::null()),
       source_stream_(NULL),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       optimization_id_(-1),
       ast_value_factory_(NULL),
-      ast_value_factory_owned_(false) {
+      ast_value_factory_owned_(false),
+      aborted_due_to_dependency_change_(false) {
   Initialize(isolate, STUB, zone);
 }
 
 
 CompilationInfo::CompilationInfo(Handle<SharedFunctionInfo> shared_info,
                                  Zone* zone)
     : flags_(kLazy | kThisHasUses),
       shared_info_(shared_info),
       script_(Handle<Script>(Script::cast(shared_info->script()))),
       source_stream_(NULL),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       optimization_id_(-1),
       ast_value_factory_(NULL),
-      ast_value_factory_owned_(false) {
+      ast_value_factory_owned_(false),
+      aborted_due_to_dependency_change_(false) {
   Initialize(script_->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(Handle<JSFunction> closure, Zone* zone)
     : flags_(kLazy | kThisHasUses),
       closure_(closure),
       shared_info_(Handle<SharedFunctionInfo>(closure->shared())),
       script_(Handle<Script>(Script::cast(shared_info_->script()))),
       source_stream_(NULL),
       context_(closure->context()),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       optimization_id_(-1),
       ast_value_factory_(NULL),
-      ast_value_factory_owned_(false) {
+      ast_value_factory_owned_(false),
+      aborted_due_to_dependency_change_(false) {
   Initialize(script_->GetIsolate(), BASE, zone);
 }
 
 
 CompilationInfo::CompilationInfo(HydrogenCodeStub* stub, Isolate* isolate,
                                  Zone* zone)
     : flags_(kLazy | kThisHasUses),
       source_stream_(NULL),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       optimization_id_(-1),
       ast_value_factory_(NULL),
-      ast_value_factory_owned_(false) {
+      ast_value_factory_owned_(false),
+      aborted_due_to_dependency_change_(false) {
   Initialize(isolate, STUB, zone);
   code_stub_ = stub;
 }
 
 
 CompilationInfo::CompilationInfo(
     ScriptCompiler::ExternalSourceStream* stream,
     ScriptCompiler::StreamedSource::Encoding encoding, Isolate* isolate,
     Zone* zone)
     : flags_(kThisHasUses),
       source_stream_(stream),
       source_stream_encoding_(encoding),
       osr_ast_id_(BailoutId::None()),
       parameter_count_(0),
       optimization_id_(-1),
       ast_value_factory_(NULL),
-      ast_value_factory_owned_(false) {
+      ast_value_factory_owned_(false),
+      aborted_due_to_dependency_change_(false) {
   Initialize(isolate, BASE, zone);
 }
 
 
 void CompilationInfo::Initialize(Isolate* isolate,
                                  Mode mode,
                                  Zone* zone) {
   isolate_ = isolate;
   function_ = NULL;
   scope_ = NULL;
@@ skipping 1292 matching lines @@
   AllowHandleDereference allow_deref;
   bool tracing_on = info()->IsStub()
       ? FLAG_trace_hydrogen_stubs
       : (FLAG_trace_hydrogen &&
          info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter));
   return (tracing_on &&
       base::OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL);
 }
 
 } }  // namespace v8::internal