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d8: create compile cache in a separate isolate.

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R=vogelheim@chromium.org

Review URL: https://codereview.chromium.org/670433003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24752 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
yangguo@chromium.org 2014-10-21 06:40:15 +00:00
parent 78f4212ed4
commit e17e2afb78
1 changed files with 65 additions and 22 deletions
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87
src/d8.cc
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@ -177,33 +177,76 @@ const char* Shell::ToCString(const v8::String::Utf8Value& value) {
}
ScriptCompiler::CachedData* CompileForCachedData(
Local<String> source, Local<Value> name,
ScriptCompiler::CompileOptions compile_options) {
int source_length = source->Length();
uint16_t* source_buffer = new uint16_t[source_length];
source->Write(source_buffer, 0, source_length);
int name_length = 0;
uint16_t* name_buffer = NULL;
if (name->IsString()) {
Local<String> name_string = name->ToString();
name_length = name_string->Length();
name_buffer = new uint16_t[name_length];
name_string->Write(name_buffer, 0, name_length);
}
Isolate* temp_isolate = Isolate::New();
ScriptCompiler::CachedData* result = NULL;
{
Isolate::Scope isolate_scope(temp_isolate);
HandleScope handle_scope(temp_isolate);
Context::Scope context_scope(Context::New(temp_isolate));
Local<String> source_copy = v8::String::NewFromTwoByte(
temp_isolate, source_buffer, v8::String::kNormalString, source_length);
Local<Value> name_copy;
if (name_buffer) {
name_copy = v8::String::NewFromTwoByte(
temp_isolate, name_buffer, v8::String::kNormalString, name_length);
} else {
name_copy = v8::Undefined(temp_isolate);
}
ScriptCompiler::Source script_source(source_copy, ScriptOrigin(name_copy));
ScriptCompiler::CompileUnbound(temp_isolate, &script_source,
compile_options);
if (script_source.GetCachedData()) {
int length = script_source.GetCachedData()->length;
uint8_t* cache = new uint8_t[length];
memcpy(cache, script_source.GetCachedData()->data, length);
result = new ScriptCompiler::CachedData(
cache, length, ScriptCompiler::CachedData::BufferOwned);
}
}
temp_isolate->Dispose();
delete[] source_buffer;
return result;
}
// Compile a string within the current v8 context.
Local<UnboundScript> Shell::CompileString(
Isolate* isolate, Local<String> source, Local<Value> name,
v8::ScriptCompiler::CompileOptions compile_options) {
ScriptCompiler::CompileOptions compile_options) {
ScriptOrigin origin(name);
ScriptCompiler::Source script_source(source, origin);
Local<UnboundScript> script =
ScriptCompiler::CompileUnbound(isolate, &script_source, compile_options);
// Was caching requested & successful? Then compile again, now with cache.
if (script_source.GetCachedData()) {
if (compile_options == ScriptCompiler::kProduceCodeCache) {
compile_options = ScriptCompiler::kConsumeCodeCache;
} else if (compile_options == ScriptCompiler::kProduceParserCache) {
compile_options = ScriptCompiler::kConsumeParserCache;
} else {
DCHECK(false); // A new compile option?
}
ScriptCompiler::Source cached_source(
source, origin, new v8::ScriptCompiler::CachedData(
script_source.GetCachedData()->data,
script_source.GetCachedData()->length,
v8::ScriptCompiler::CachedData::BufferNotOwned));
script = ScriptCompiler::CompileUnbound(isolate, &cached_source,
compile_options);
if (compile_options == ScriptCompiler::kNoCompileOptions) {
ScriptCompiler::Source script_source(source, origin);
return ScriptCompiler::CompileUnbound(isolate, &script_source,
compile_options);
}
return script;
ScriptCompiler::CachedData* data =
CompileForCachedData(source, name, compile_options);
ScriptCompiler::Source cached_source(source, origin, data);
if (compile_options == ScriptCompiler::kProduceCodeCache) {
compile_options = ScriptCompiler::kConsumeCodeCache;
} else if (compile_options == ScriptCompiler::kProduceParserCache) {
compile_options = ScriptCompiler::kConsumeParserCache;
} else {
DCHECK(false); // A new compile option?
}
if (data == NULL) compile_options = ScriptCompiler::kNoCompileOptions;
return ScriptCompiler::CompileUnbound(isolate, &cached_source,
compile_options);
}