cc: Implement shared worker contexts. (v1)

ui/compositor/test/in_process_context_provider.cc

 // Copyright (c) 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 "ui/compositor/test/in_process_context_provider.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/lazy_instance.h"
 #include "base/strings/stringprintf.h"
@@ skipping 62 matching lines @@
     const gpu::gles2::ContextCreationAttribHelper& attribs,
     gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
     gpu::ImageFactory* image_factory,
     gfx::AcceleratedWidget window,
     const std::string& debug_name)
     : attribs_(attribs),
       gpu_memory_buffer_manager_(gpu_memory_buffer_manager),
       image_factory_(image_factory),
       window_(window),
       debug_name_(debug_name),
+      lost_(false),
       destroyed_(false) {
   DCHECK(main_thread_checker_.CalledOnValidThread());
   context_thread_checker_.DetachFromThread();
 }
 
-InProcessContextProvider::~InProcessContextProvider() {
-  DCHECK(main_thread_checker_.CalledOnValidThread() ||
-         context_thread_checker_.CalledOnValidThread());
+InProcessContextProvider::~InProcessContextProvider() {}
+
+void InProcessContextProvider::Destroy() {
+  DCHECK(main_thread_checker_.CalledOnValidThread());
+  gr_context_ = nullptr;
+  context_.reset();
+  destroyed_ = true;
 }
 
 bool InProcessContextProvider::BindToCurrentThread() {
   // This is called on the thread the context will be used.
   DCHECK(context_thread_checker_.CalledOnValidThread());
 
   if (!context_) {
     gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
     context_.reset(gpu::GLInProcessContext::Create(
         nullptr,                           /* service */
@@ skipping 92 matching lines @@
 void InProcessContextProvider::DeleteCachedResources() {
   DCHECK(context_thread_checker_.CalledOnValidThread());
 
   if (gr_context_) {
     TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources",
                          TRACE_EVENT_SCOPE_THREAD);
     gr_context_->freeGpuResources();
   }
 }
 
-bool InProcessContextProvider::DestroyedOnMainThread() {
+bool InProcessContextProvider::HasBeenLostOnMainThread() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
-  base::AutoLock lock(destroyed_lock_);
-  return destroyed_;
+  base::AutoLock lock(lost_lock_);
+  return lost_;
 }
 
 void InProcessContextProvider::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   lost_context_callback_ = lost_context_callback;
 }
 
 void InProcessContextProvider::SetMemoryPolicyChangedCallback(
     const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
   // There's no memory manager for the in-process implementation.
 }
 
 void InProcessContextProvider::OnLostContext() {
   DCHECK(context_thread_checker_.CalledOnValidThread());
   {
-    base::AutoLock lock(destroyed_lock_);
-    if (destroyed_)
+    base::AutoLock lock(lost_lock_);
+    if (lost_)
       return;
-    destroyed_ = true;
+    lost_ = true;
   }
   if (!lost_context_callback_.is_null())
     base::ResetAndReturn(&lost_context_callback_).Run();
   if (gr_context_)
     gr_context_->abandonContext();
 }
 
+bool InProcessContextProvider::HasBeenDestroyed() {
+  DCHECK(context_thread_checker_.CalledOnValidThread());
+  return destroyed_;
+}
+
 }  // namespace ui