cc: Implement shared worker contexts. (v1)

cc/test/test_context_provider.cc

 // Copyright 2013 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 "cc/test/test_context_provider.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "cc/test/test_gles2_interface.h"
 #include "cc/test/test_web_graphics_context_3d.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 #include "third_party/skia/include/gpu/gl/SkNullGLContext.h"
 
 namespace cc {
 
 // static
 scoped_refptr<TestContextProvider> TestContextProvider::Create() {
-  return Create(TestWebGraphicsContext3D::Create().Pass());
+  return Create(TestWebGraphicsContext3D::Create());
 }
 
 // static
+scoped_refptr<TestContextProvider> TestContextProvider::CreateWorker() {
+  scoped_refptr<TestContextProvider> worker_context_provider =
+      Create(TestWebGraphicsContext3D::Create());
+  if (!worker_context_provider)
+    return nullptr;
+  // Worker contexts are bound to the thread they are created on.
+  if (!worker_context_provider->BindToCurrentThread())
+    return nullptr;
+  worker_context_provider->SetupLock();
+  return worker_context_provider;
+}
+
+// static
 scoped_refptr<TestContextProvider> TestContextProvider::Create(
     scoped_ptr<TestWebGraphicsContext3D> context) {
   if (!context)
     return NULL;
   return new TestContextProvider(context.Pass());
 }
 
 TestContextProvider::TestContextProvider(
     scoped_ptr<TestWebGraphicsContext3D> context)
     : context3d_(context.Pass()),
       context_gl_(new TestGLES2Interface(context3d_.get())),
       bound_(false),
       destroyed_(false),
       weak_ptr_factory_(this) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   DCHECK(context3d_);
   context_thread_checker_.DetachFromThread();
   context3d_->set_test_support(&support_);
 }
 
 TestContextProvider::~TestContextProvider() {
-  DCHECK(main_thread_checker_.CalledOnValidThread() ||
-         context_thread_checker_.CalledOnValidThread());
 }
 
 bool TestContextProvider::BindToCurrentThread() {
   // This is called on the thread the context will be used.
   DCHECK(context_thread_checker_.CalledOnValidThread());
 
   if (bound_)
     return true;
 
   if (context_gl_->GetGraphicsResetStatusKHR() != GL_NO_ERROR) {
@@ skipping 132 matching lines @@
   DCHECK(context_thread_checker_.CalledOnValidThread());
   DCHECK(memory_policy_changed_callback_.is_null() || cb.is_null());
   memory_policy_changed_callback_ = cb;
 }
 
 void TestContextProvider::SetMaxTransferBufferUsageBytes(
     size_t max_transfer_buffer_usage_bytes) {
   context3d_->SetMaxTransferBufferUsageBytes(max_transfer_buffer_usage_bytes);
 }
 
+bool TestContextProvider::HasBeenDestroyed() {
+  DCHECK(context_thread_checker_.CalledOnValidThread());
+  return destroyed_;

[piman, 2015/09/04 22:19:13]

I think you need to take destroyed_lock_ here.

+}
+
 }  // namespace cc