1 // Copyright 2011 The Chromium 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 "cc/scheduler/rate_limiter.h" 6 7 #include "base/bind.h" 8 #include "base/debug/trace_event.h" 9 #include "base/location.h" 10 #include "base/logging.h" 11 #include "base/single_thread_task_runner.h" 12 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h" 13 14 namespace cc { 15 16 scoped_refptr<RateLimiter> RateLimiter::Create( 17 WebKit::WebGraphicsContext3D* context, 18 RateLimiterClient* client, 19 base::SingleThreadTaskRunner* task_runner) { 20 return make_scoped_refptr(new RateLimiter(context, client, task_runner)); 21 } 22 23 RateLimiter::RateLimiter(WebKit::WebGraphicsContext3D* context, 24 RateLimiterClient* client, 25 base::SingleThreadTaskRunner* task_runner) 26 : context_(context), 27 active_(false), 28 client_(client), 29 task_runner_(task_runner) { 30 DCHECK(context); 31 } 32 33 RateLimiter::~RateLimiter() {} 34 35 void RateLimiter::Start() { 36 if (active_) 37 return; 38 39 TRACE_EVENT0("cc", "RateLimiter::Start"); 40 active_ = true; 41 task_runner_->PostTask(FROM_HERE, 42 base::Bind(&RateLimiter::RateLimitContext, this)); 43 } 44 45 void RateLimiter::Stop() { 46 TRACE_EVENT0("cc", "RateLimiter::Stop"); 47 client_ = NULL; 48 } 49 50 void RateLimiter::RateLimitContext() { 51 if (!client_) 52 return; 53 54 TRACE_EVENT0("cc", "RateLimiter::RateLimitContext"); 55 56 active_ = false; 57 client_->RateLimit(); 58 context_->rateLimitOffscreenContextCHROMIUM(); 59 } 60 61 } // namespace cc 62
