| // Copyright 2014 The Chromium 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 "components/test_runner/gc_controller.h" |
| |
| #include "gin/arguments.h" |
| #include "gin/handle.h" |
| #include "gin/object_template_builder.h" |
| #include "third_party/WebKit/public/web/WebFrame.h" |
| #include "third_party/WebKit/public/web/WebKit.h" |
| #include "v8/include/v8.h" |
| |
| namespace test_runner { |
| |
| gin::WrapperInfo GCController::kWrapperInfo = {gin::kEmbedderNativeGin}; |
| |
| // static |
| void GCController::Install(blink::WebFrame* frame) { |
| v8::Isolate* isolate = blink::mainThreadIsolate(); |
| v8::HandleScope handle_scope(isolate); |
| v8::Local<v8::Context> context = frame->mainWorldScriptContext(); |
| if (context.IsEmpty()) |
| return; |
| |
| v8::Context::Scope context_scope(context); |
| |
| gin::Handle<GCController> controller = |
| gin::CreateHandle(isolate, new GCController()); |
| if (controller.IsEmpty()) |
| return; |
| v8::Local<v8::Object> global = context->Global(); |
| global->Set(gin::StringToV8(isolate, "GCController"), controller.ToV8()); |
| } |
| |
| GCController::GCController() {} |
| |
| GCController::~GCController() {} |
| |
| gin::ObjectTemplateBuilder GCController::GetObjectTemplateBuilder( |
| v8::Isolate* isolate) { |
| return gin::Wrappable<GCController>::GetObjectTemplateBuilder(isolate) |
| .SetMethod("collect", &GCController::Collect) |
| .SetMethod("collectAll", &GCController::CollectAll) |
| .SetMethod("minorCollect", &GCController::MinorCollect); |
| } |
| |
| void GCController::Collect(const gin::Arguments& args) { |
| args.isolate()->RequestGarbageCollectionForTesting( |
| v8::Isolate::kFullGarbageCollection); |
| } |
| |
| void GCController::CollectAll(const gin::Arguments& args) { |
| // In order to collect a DOM wrapper, two GC cycles are needed. |
| // In the first GC cycle, a weak callback of the DOM wrapper is called back |
| // and the weak callback disposes a persistent handle to the DOM wrapper. |
| // In the second GC cycle, the DOM wrapper is reclaimed. |
| // Given that two GC cycles are needed to collect one DOM wrapper, |
| // more than two GC cycles are needed to collect all DOM wrappers |
| // that are chained. Seven GC cycles look enough in most tests. |
| for (int i = 0; i < 7; i++) { |
| args.isolate()->RequestGarbageCollectionForTesting( |
| v8::Isolate::kFullGarbageCollection); |
| } |
| } |
| |
| void GCController::MinorCollect(const gin::Arguments& args) { |
| args.isolate()->RequestGarbageCollectionForTesting( |
| v8::Isolate::kMinorGarbageCollection); |
| } |
| |
| } // namespace test_runner |