Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/background-parsing-task.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6 | #include "src/debug/debug.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | |
| 8 | namespace v8 { |
| 9 | namespace internal { |
| 10 | |
| 11 | BackgroundParsingTask::BackgroundParsingTask( |
| 12 | StreamedSource* source, ScriptCompiler::CompileOptions options, |
| 13 | int stack_size, Isolate* isolate) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 14 | : source_(source), stack_size_(stack_size) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 15 | // We don't set the context to the CompilationInfo yet, because the background |
| 16 | // thread cannot do anything with it anyway. We set it just before compilation |
| 17 | // on the foreground thread. |
| 18 | DCHECK(options == ScriptCompiler::kProduceParserCache || |
| 19 | options == ScriptCompiler::kProduceCodeCache || |
| 20 | options == ScriptCompiler::kNoCompileOptions); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 21 | |
| 22 | // Prepare the data for the internalization phase and compilation phase, which |
| 23 | // will happen in the main thread after parsing. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 24 | Zone* zone = new Zone(isolate->allocator()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 25 | ParseInfo* info = new ParseInfo(zone); |
| 26 | source->zone.Reset(zone); |
| 27 | source->info.Reset(info); |
| 28 | info->set_isolate(isolate); |
| 29 | info->set_source_stream(source->source_stream.get()); |
| 30 | info->set_source_stream_encoding(source->encoding); |
| 31 | info->set_hash_seed(isolate->heap()->HashSeed()); |
| 32 | info->set_global(); |
| 33 | info->set_unicode_cache(&source_->unicode_cache); |
| 34 | info->set_compile_options(options); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 35 | // Parse eagerly with ignition since we will compile eagerly. |
| 36 | info->set_allow_lazy_parsing(!(i::FLAG_ignition && i::FLAG_ignition_eager)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 37 | } |
| 38 | |
| 39 | |
| 40 | void BackgroundParsingTask::Run() { |
| 41 | DisallowHeapAllocation no_allocation; |
| 42 | DisallowHandleAllocation no_handles; |
| 43 | DisallowHandleDereference no_deref; |
| 44 | |
| 45 | ScriptData* script_data = NULL; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 46 | ScriptCompiler::CompileOptions options = source_->info->compile_options(); |
| 47 | if (options == ScriptCompiler::kProduceParserCache || |
| 48 | options == ScriptCompiler::kProduceCodeCache) { |
| 49 | source_->info->set_cached_data(&script_data); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 50 | } |
| 51 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 52 | uintptr_t stack_limit = |
| 53 | reinterpret_cast<uintptr_t>(&stack_limit) - stack_size_ * KB; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 55 | source_->info->set_stack_limit(stack_limit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 56 | // Parser needs to stay alive for finalizing the parsing on the main |
| 57 | // thread. Passing &parse_info is OK because Parser doesn't store it. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 58 | source_->parser.Reset(new Parser(source_->info.get())); |
| 59 | source_->parser->ParseOnBackground(source_->info.get()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 60 | |
| 61 | if (script_data != NULL) { |
| 62 | source_->cached_data.Reset(new ScriptCompiler::CachedData( |
| 63 | script_data->data(), script_data->length(), |
| 64 | ScriptCompiler::CachedData::BufferOwned)); |
| 65 | script_data->ReleaseDataOwnership(); |
| 66 | delete script_data; |
| 67 | } |
| 68 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 69 | } // namespace internal |
| 70 | } // namespace v8 |