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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "src/background-parsing-task.h" | 5 #include "src/background-parsing-task.h" |
| 6 | 6 |
| 7 namespace v8 { | 7 namespace v8 { |
| 8 namespace internal { | 8 namespace internal { |
| 9 | 9 |
| 10 BackgroundParsingTask::BackgroundParsingTask( | 10 BackgroundParsingTask::BackgroundParsingTask( |
| 11 StreamedSource* source, ScriptCompiler::CompileOptions options, | 11 StreamedSource* source, ScriptCompiler::CompileOptions options, |
| 12 int stack_size, Isolate* isolate) | 12 int stack_size, Isolate* isolate) |
| 13 : source_(source), options_(options), stack_size_(stack_size) { | 13 : source_(source), stack_size_(stack_size) { |
| 14 // Prepare the data for the internalization phase and compilation phase, which | |
| 15 // will happen in the main thread after parsing. | |
| 16 source->info.Reset(new i::CompilationInfoWithZone(source->source_stream.get(), | |
| 17 source->encoding, isolate)); | |
| 18 source->info->MarkAsGlobal(); | |
| 19 | |
| 20 // We don't set the context to the CompilationInfo yet, because the background | 14 // We don't set the context to the CompilationInfo yet, because the background |
| 21 // thread cannot do anything with it anyway. We set it just before compilation | 15 // thread cannot do anything with it anyway. We set it just before compilation |
| 22 // on the foreground thread. | 16 // on the foreground thread. |
| 23 DCHECK(options == ScriptCompiler::kProduceParserCache || | 17 DCHECK(options == ScriptCompiler::kProduceParserCache || |
| 24 options == ScriptCompiler::kProduceCodeCache || | 18 options == ScriptCompiler::kProduceCodeCache || |
| 25 options == ScriptCompiler::kNoCompileOptions); | 19 options == ScriptCompiler::kNoCompileOptions); |
| 26 source->allow_lazy = | |
| 27 !i::Compiler::DebuggerWantsEagerCompilation(source->info.get()); | |
| 28 | 20 |
| 29 if (!source->allow_lazy && options_ == ScriptCompiler::kProduceParserCache) { | 21 // Prepare the data for the internalization phase and compilation phase, which |
| 22 // will happen in the main thread after parsing. |
| 23 Zone* zone = new Zone(); |
| 24 ParseInfo* info = new ParseInfo(zone); |
| 25 source->zone.Reset(zone); |
| 26 source->info.Reset(info); |
| 27 info->set_isolate(isolate); |
| 28 info->set_source_stream(source->source_stream.get()); |
| 29 info->set_source_stream_encoding(source->encoding); |
| 30 info->set_hash_seed(isolate->heap()->HashSeed()); |
| 31 info->set_global(); |
| 32 info->set_unicode_cache(&source_->unicode_cache); |
| 33 |
| 34 bool disable_lazy = Compiler::DebuggerWantsEagerCompilation(isolate); |
| 35 if (disable_lazy && options == ScriptCompiler::kProduceParserCache) { |
| 30 // Producing cached data while parsing eagerly is not supported. | 36 // Producing cached data while parsing eagerly is not supported. |
| 31 options_ = ScriptCompiler::kNoCompileOptions; | 37 options = ScriptCompiler::kNoCompileOptions; |
| 32 } | 38 } |
| 33 source->hash_seed = isolate->heap()->HashSeed(); | 39 |
| 40 info->set_compile_options(options); |
| 41 info->set_allow_lazy_parsing(!disable_lazy); |
| 34 } | 42 } |
| 35 | 43 |
| 36 | 44 |
| 37 void BackgroundParsingTask::Run() { | 45 void BackgroundParsingTask::Run() { |
| 38 DisallowHeapAllocation no_allocation; | 46 DisallowHeapAllocation no_allocation; |
| 39 DisallowHandleAllocation no_handles; | 47 DisallowHandleAllocation no_handles; |
| 40 DisallowHandleDereference no_deref; | 48 DisallowHandleDereference no_deref; |
| 41 | 49 |
| 42 ScriptData* script_data = NULL; | 50 ScriptData* script_data = NULL; |
| 43 if (options_ == ScriptCompiler::kProduceParserCache || | 51 ScriptCompiler::CompileOptions options = source_->info->compile_options(); |
| 44 options_ == ScriptCompiler::kProduceCodeCache) { | 52 if (options == ScriptCompiler::kProduceParserCache || |
| 45 source_->info->SetCachedData(&script_data, options_); | 53 options == ScriptCompiler::kProduceCodeCache) { |
| 54 source_->info->set_cached_data(&script_data); |
| 46 } | 55 } |
| 47 | 56 |
| 48 uintptr_t stack_limit = | 57 uintptr_t stack_limit = |
| 49 reinterpret_cast<uintptr_t>(&stack_limit) - stack_size_ * KB; | 58 reinterpret_cast<uintptr_t>(&stack_limit) - stack_size_ * KB; |
| 50 | 59 |
| 60 source_->info->set_stack_limit(stack_limit); |
| 51 // Parser needs to stay alive for finalizing the parsing on the main | 61 // Parser needs to stay alive for finalizing the parsing on the main |
| 52 // thread. Passing &parse_info is OK because Parser doesn't store it. | 62 // thread. Passing &parse_info is OK because Parser doesn't store it. |
| 53 source_->parser.Reset(new Parser(source_->info.get(), stack_limit, | 63 source_->parser.Reset(new Parser(source_->info.get())); |
| 54 source_->hash_seed, | |
| 55 &source_->unicode_cache)); | |
| 56 source_->parser->set_allow_lazy(source_->allow_lazy); | |
| 57 source_->parser->ParseOnBackground(source_->info.get()); | 64 source_->parser->ParseOnBackground(source_->info.get()); |
| 58 | 65 |
| 59 if (script_data != NULL) { | 66 if (script_data != NULL) { |
| 60 source_->cached_data.Reset(new ScriptCompiler::CachedData( | 67 source_->cached_data.Reset(new ScriptCompiler::CachedData( |
| 61 script_data->data(), script_data->length(), | 68 script_data->data(), script_data->length(), |
| 62 ScriptCompiler::CachedData::BufferOwned)); | 69 ScriptCompiler::CachedData::BufferOwned)); |
| 63 script_data->ReleaseDataOwnership(); | 70 script_data->ReleaseDataOwnership(); |
| 64 delete script_data; | 71 delete script_data; |
| 65 } | 72 } |
| 66 } | 73 } |
| 67 } | 74 } |
| 68 } // namespace v8::internal | 75 } // namespace v8::internal |
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