(not for commit) Create 2nd ContextProvider for Ganesh rasterization.

content/common/gpu/client/context_provider_command_buffer.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 "content/common/gpu/client/context_provider_command_buffer.h"
 
 #include <set>
 #include <vector>
 
 #include "base/callback_helpers.h"
@@ skipping 61 matching lines @@
 
 
 CommandBufferProxyImpl* ContextProviderCommandBuffer::GetCommandBufferProxy() {
   return context3d_->GetCommandBufferProxy();
 }
 
 WebGraphicsContext3DCommandBufferImpl*
 ContextProviderCommandBuffer::WebContext3D() {
   DCHECK(context3d_);
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   return context3d_.get();
 }
 
 bool ContextProviderCommandBuffer::BindToCurrentThread() {
   // This is called on the thread the context will be used.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   if (lost_context_callback_proxy_)
     return true;
 
   if (!context3d_->InitializeOnCurrentThread())
     return false;
 
   InitializeCapabilities();
 
   std::string unique_context_name =
       base::StringPrintf("%s-%p", debug_name_.c_str(), context3d_.get());
   context3d_->traceBeginCHROMIUM("gpu_toplevel", unique_context_name.c_str());
 
   lost_context_callback_proxy_.reset(new LostContextCallbackProxy(this));
   context3d_->GetCommandBufferProxy()->SetMemoryAllocationChangedCallback(
       base::Bind(&ContextProviderCommandBuffer::OnMemoryAllocationChanged,
                  base::Unretained(this)));
   return true;
 }
 
+void ContextProviderCommandBuffer::RebindToCurrentThread() {
+  context_thread_checker_.DetachFromThread();
+  context_thread_checker_.CalledOnValidThread();
+}
+
 gpu::gles2::GLES2Interface* ContextProviderCommandBuffer::ContextGL() {
   DCHECK(context3d_);
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  // CHECK(context_thread_checker_.CalledOnValidThread());
 
   return context3d_->GetImplementation();
 }
 
 gpu::ContextSupport* ContextProviderCommandBuffer::ContextSupport() {
   return context3d_->GetContextSupport();
 }
 
 class GrContext* ContextProviderCommandBuffer::GrContext() {
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   if (gr_context_)
     return gr_context_->get();
 
   gr_context_.reset(
       new webkit::gpu::GrContextForWebGraphicsContext3D(context3d_.get()));
   return gr_context_->get();
 }
 
 cc::ContextProvider::Capabilities
 ContextProviderCommandBuffer::ContextCapabilities() {
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   return capabilities_;
 }
 
 bool ContextProviderCommandBuffer::IsContextLost() {
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   return context3d_->isContextLost();
 }
 
 void ContextProviderCommandBuffer::VerifyContexts() {
   DCHECK(lost_context_callback_proxy_);  // Is bound to thread.
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   if (context3d_->isContextLost())
     OnLostContext();
 }
 
 void ContextProviderCommandBuffer::DeleteCachedResources() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   if (gr_context_)
     gr_context_->FreeGpuResources();
 }
 
 void ContextProviderCommandBuffer::OnLostContext() {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
   {
     base::AutoLock lock(main_thread_lock_);
     if (destroyed_)
       return;
     destroyed_ = true;
   }
   if (!lost_context_callback_.is_null())
     base::ResetAndReturn(&lost_context_callback_).Run();
   if (gr_context_)
     gr_context_->OnLostContext();
 }
 
 void ContextProviderCommandBuffer::OnMemoryAllocationChanged(
     const gpu::MemoryAllocation& allocation) {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
 
   if (memory_policy_changed_callback_.is_null())
     return;
 
   memory_policy_changed_callback_.Run(cc::ManagedMemoryPolicy(allocation));
 }
 
 void ContextProviderCommandBuffer::InitializeCapabilities() {
   Capabilities caps;
   caps.gpu = context3d_->GetImplementation()->capabilities();
 
   size_t mapped_memory_limit = context3d_->GetMappedMemoryLimit();
   caps.max_transfer_buffer_usage_bytes =
       mapped_memory_limit == WebGraphicsContext3DCommandBufferImpl::kNoLimit
       ? std::numeric_limits<size_t>::max() : mapped_memory_limit;
 
   capabilities_ = caps;
 }
 
 bool ContextProviderCommandBuffer::DestroyedOnMainThread() {
   DCHECK(main_thread_checker_.CalledOnValidThread());
 
   base::AutoLock lock(main_thread_lock_);
   return destroyed_;
 }
 
 void ContextProviderCommandBuffer::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
   DCHECK(lost_context_callback_.is_null() ||
          lost_context_callback.is_null());
   lost_context_callback_ = lost_context_callback;
 }
 
 void ContextProviderCommandBuffer::SetMemoryPolicyChangedCallback(
     const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
-  DCHECK(context_thread_checker_.CalledOnValidThread());
+  CHECK(context_thread_checker_.CalledOnValidThread());
   DCHECK(memory_policy_changed_callback_.is_null() ||
          memory_policy_changed_callback.is_null());
   memory_policy_changed_callback_ = memory_policy_changed_callback;
 }
 
 }  // namespace content