1b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org// Copyright 2014 the V8 project authors. All rights reserved. 2b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org// Use of this source code is governed by a BSD-style license that can be 3b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org// found in the LICENSE file. 4b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 5b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org#include "src/background-parsing-task.h" 6b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 7b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.orgnamespace v8 { 8b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.orgnamespace internal { 9b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 10b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.orgBackgroundParsingTask::BackgroundParsingTask( 11b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org StreamedSource* source, ScriptCompiler::CompileOptions options, 12b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org int stack_size, Isolate* isolate) 13b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org : source_(source), options_(options), stack_size_(stack_size) { 14b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org // Prepare the data for the internalization phase and compilation phase, which 15b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org // will happen in the main thread after parsing. 16b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source->info.Reset(new i::CompilationInfoWithZone(source->source_stream.get(), 17b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source->encoding, isolate)); 18b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source->info->MarkAsGlobal(); 19b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 20b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org // We don't set the context to the CompilationInfo yet, because the background 21b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org // thread cannot do anything with it anyway. We set it just before compilation 22b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org // on the foreground thread. 23b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org DCHECK(options == ScriptCompiler::kProduceParserCache || 24b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org options == ScriptCompiler::kProduceCodeCache || 25b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org options == ScriptCompiler::kNoCompileOptions); 26b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source->allow_lazy = 27b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org !i::Compiler::DebuggerWantsEagerCompilation(source->info.get()); 28b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source->hash_seed = isolate->heap()->HashSeed(); 29b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org} 30b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 31b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 32b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.orgvoid BackgroundParsingTask::Run() { 33b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org DisallowHeapAllocation no_allocation; 34b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org DisallowHandleAllocation no_handles; 35b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org DisallowHandleDereference no_deref; 36b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 37b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org ScriptData* script_data = NULL; 38b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org if (options_ == ScriptCompiler::kProduceParserCache || 39b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org options_ == ScriptCompiler::kProduceCodeCache) { 40b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source_->info->SetCachedData(&script_data, options_); 41b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org } 42b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 43b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org uintptr_t limit = reinterpret_cast<uintptr_t>(&limit) - stack_size_ * KB; 44b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org Parser::ParseInfo parse_info = {limit, source_->hash_seed, 45b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org &source_->unicode_cache}; 46b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 47b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org // Parser needs to stay alive for finalizing the parsing on the main 48b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org // thread. Passing &parse_info is OK because Parser doesn't store it. 49b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source_->parser.Reset(new Parser(source_->info.get(), &parse_info)); 50b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source_->parser->set_allow_lazy(source_->allow_lazy); 51b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source_->parser->ParseOnBackground(); 52b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org 53b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org if (script_data != NULL) { 54b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org source_->cached_data.Reset(new ScriptCompiler::CachedData( 55b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org script_data->data(), script_data->length(), 56b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org ScriptCompiler::CachedData::BufferOwned)); 57b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org script_data->ReleaseDataOwnership(); 58b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org delete script_data; 59b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org } 60b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org} 61b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org} 62b376fed08cb9d90a3f67f655adf63c4b35feb106machenbach@chromium.org} // namespace v8::internal 63