cc: Separate RasterWorkerPool interface from implementation details.

cc/resources/rasterizer_delegate.cc

+// Copyright 2014 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/resources/rasterizer_delegate.h"
+
+#include "base/debug/trace_event.h"
+
+namespace cc {
+
+RasterizerDelegate::RasterizerDelegate(RasterizerClient* client,
+                                       Rasterizer** rasterizers,
+                                       size_t num_rasterizers)
+    : client_(client),
+      rasterizers_(rasterizers, rasterizers + num_rasterizers),
+      did_finish_running_tasks_pending_count_(0u),
+      did_finish_running_tasks_required_for_activation_pending_count_(0u) {
+  DCHECK(client_);
+  for (RasterizerVector::iterator it = rasterizers_.begin();
+       it != rasterizers_.end();
+       ++it)
+    (*it)->SetClient(this);
+}
+
+RasterizerDelegate::~RasterizerDelegate() {}
+
+// static
+scoped_ptr<RasterizerDelegate> RasterizerDelegate::Create(
+    RasterizerClient* client,
+    Rasterizer** rasterizers,
+    size_t num_rasterizers) {
+  return make_scoped_ptr(
+      new RasterizerDelegate(client, rasterizers, num_rasterizers));
+}
+
+void RasterizerDelegate::Shutdown() {
+  for (RasterizerVector::iterator it = rasterizers_.begin();
+       it != rasterizers_.end();
+       ++it)
+    (*it)->Shutdown();
+}
+
+void RasterizerDelegate::ScheduleTasks(RasterTaskQueue* queue) {
+  for (size_t i = 0; i < rasterizers_.size(); ++i)
+    rasterizers_[i]->ScheduleTasks(&queue[i]);
+
+  did_finish_running_tasks_pending_count_ = rasterizers_.size();
+  did_finish_running_tasks_required_for_activation_pending_count_ =
+      rasterizers_.size();
+}
+
+void RasterizerDelegate::CheckForCompletedTasks() {
+  for (RasterizerVector::iterator it = rasterizers_.begin();
+       it != rasterizers_.end();
+       ++it)
+    (*it)->CheckForCompletedTasks();
+}
+
+bool RasterizerDelegate::ShouldForceTasksRequiredForActivationToComplete()
+    const {
+  return client_->ShouldForceTasksRequiredForActivationToComplete();
+}
+
+void RasterizerDelegate::DidFinishRunningTasks() {
+  TRACE_EVENT1("cc",
+               "RasterizerDelegate::DidFinishRunningTasks",
+               "pending_count",
+               did_finish_running_tasks_pending_count_);
+
+  DCHECK_LT(0u, did_finish_running_tasks_pending_count_);
+  if (--did_finish_running_tasks_pending_count_)
+    return;
+  client_->DidFinishRunningTasks();
+}
+
+void RasterizerDelegate::DidFinishRunningTasksRequiredForActivation() {
+  TRACE_EVENT1("cc",
+               "RasterizerDelegate::DidFinishRunningTasksRequiredForActivation",
+               "pending_count",
+               did_finish_running_tasks_required_for_activation_pending_count_);
+
+  DCHECK_LT(0u,
+            did_finish_running_tasks_required_for_activation_pending_count_);
+  if (--did_finish_running_tasks_required_for_activation_pending_count_)
+    return;
+  client_->DidFinishRunningTasksRequiredForActivation();
+}
+
+}  // namespace cc