gpu: Add a new extension CHROMIUM_deschedule.

gpu/ipc/service/gpu_command_buffer_stub.cc

 // Copyright (c) 2012 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 "gpu/ipc/service/gpu_command_buffer_stub.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 592 matching lines @@
   decoder_->GetLogger()->SetMsgCallback(
       base::Bind(&GpuCommandBufferStub::SendConsoleMessage,
                  base::Unretained(this)));
   decoder_->SetShaderCacheCallback(
       base::Bind(&GpuCommandBufferStub::SendCachedShader,
                  base::Unretained(this)));
   decoder_->SetFenceSyncReleaseCallback(base::Bind(
       &GpuCommandBufferStub::OnFenceSyncRelease, base::Unretained(this)));
   decoder_->SetWaitFenceSyncCallback(base::Bind(
       &GpuCommandBufferStub::OnWaitFenceSync, base::Unretained(this)));
+  decoder_->SetDescheduleUntilFinishedCallback(
+      base::Bind(&GpuCommandBufferStub::OnDescheduleUntilFinished,
+                 base::Unretained(this)));
+  decoder_->SetRescheduleAfterFinishedCallback(
+      base::Bind(&GpuCommandBufferStub::OnRescheduleAfterFinished,
+                 base::Unretained(this)));
 
   command_buffer_->SetPutOffsetChangeCallback(
       base::Bind(&GpuCommandBufferStub::PutChanged, base::Unretained(this)));
   command_buffer_->SetGetBufferChangeCallback(base::Bind(
       &CommandExecutor::SetGetBuffer, base::Unretained(executor_.get())));
   command_buffer_->SetParseErrorCallback(
       base::Bind(&GpuCommandBufferStub::OnParseError, base::Unretained(this)));
 
   if (channel_->watchdog()) {
     executor_->SetCommandProcessedCallback(base::Bind(
@@ skipping 268 matching lines @@
       context_group_->mailbox_manager();
   if (mailbox_manager->UsesSync() && MakeCurrent()) {
     SyncToken sync_token(CommandBufferNamespace::GPU_IO, 0,
                               command_buffer_id_, release);
     mailbox_manager->PushTextureUpdates(sync_token);
   }
 
   sync_point_client_->ReleaseFenceSync(release);
 }
 
+void GpuCommandBufferStub::OnDescheduleUntilFinished() {
+  DCHECK(executor_->scheduled());
+  DCHECK(executor_->HasMoreIdleWork());
+
+  executor_->SetScheduled(false);
+  channel_->OnStreamRescheduled(stream_id_, false);
+}
+
+void GpuCommandBufferStub::OnRescheduleAfterFinished() {
+  DCHECK(!executor_->scheduled());
+
+  executor_->SetScheduled(true);
+  channel_->OnStreamRescheduled(stream_id_, true);
+}
+
 bool GpuCommandBufferStub::OnWaitFenceSync(
     CommandBufferNamespace namespace_id,
     CommandBufferId command_buffer_id,
     uint64_t release) {
   DCHECK(!waiting_for_sync_point_);
   DCHECK(executor_->scheduled());
 
   scoped_refptr<SyncPointClientState> release_state =
       channel_->sync_point_manager()->GetSyncPointClientState(
           namespace_id, command_buffer_id);
@@ skipping 179 matching lines @@
   Send(new GpuCommandBufferMsg_SwapBuffersCompleted(route_id_, params));
 }
 
 void GpuCommandBufferStub::SendUpdateVSyncParameters(base::TimeTicks timebase,
                                                      base::TimeDelta interval) {
   Send(new GpuCommandBufferMsg_UpdateVSyncParameters(route_id_, timebase,
                                                      interval));
 }
 
 }  // namespace gpu