Revert of Refactor content/common/gpu into gpu/ipc/service

content/common/gpu/gpu_memory_manager.cc

Index: content/common/gpu/gpu_memory_manager.cc
diff --git a/content/common/gpu/gpu_memory_manager.cc b/content/common/gpu/gpu_memory_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2e6a10342791ff9703f1cc4ba89c68cb22ebaaa5
--- /dev/null
+++ b/content/common/gpu/gpu_memory_manager.cc
@@ -0,0 +1,125 @@
+// 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 "content/common/gpu/gpu_memory_manager.h"
+
+#include <algorithm>
+
+#include "base/bind.h"
+#include "base/command_line.h"
+#include "base/message_loop/message_loop.h"
+#include "base/process/process_handle.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/trace_event/trace_event.h"
+#include "content/common/gpu/gpu_channel_manager.h"
+#include "content/common/gpu/gpu_channel_manager_delegate.h"
+#include "content/common/gpu/gpu_memory_tracking.h"
+#include "gpu/command_buffer/common/gpu_memory_allocation.h"
+#include "gpu/command_buffer/service/gpu_switches.h"
+#include "gpu/ipc/common/gpu_memory_uma_stats.h"
+#include "gpu/ipc/common/memory_stats.h"
+
+using gpu::MemoryAllocation;
+
+namespace content {
+namespace {
+
+const uint64_t kBytesAllocatedStep = 16 * 1024 * 1024;
+
+void TrackValueChanged(uint64_t old_size,
+                       uint64_t new_size,
+                       uint64_t* total_size) {
+  DCHECK(new_size > old_size || *total_size >= (old_size - new_size));
+  *total_size += (new_size - old_size);
+}
+
+}
+
+GpuMemoryManager::GpuMemoryManager(GpuChannelManager* channel_manager)
+    : channel_manager_(channel_manager),
+      bytes_allocated_current_(0),
+      bytes_allocated_historical_max_(0) {}
+
+GpuMemoryManager::~GpuMemoryManager() {
+  DCHECK(tracking_groups_.empty());
+  DCHECK(!bytes_allocated_current_);
+}
+
+void GpuMemoryManager::TrackMemoryAllocatedChange(
+    GpuMemoryTrackingGroup* tracking_group,
+    uint64_t old_size,
+    uint64_t new_size) {
+  TrackValueChanged(old_size, new_size, &tracking_group->size_);
+  TrackValueChanged(old_size, new_size, &bytes_allocated_current_);
+
+  if (GetCurrentUsage() > bytes_allocated_historical_max_ +
+                          kBytesAllocatedStep) {
+      bytes_allocated_historical_max_ = GetCurrentUsage();
+      // If we're blowing into new memory usage territory, spam the browser
+      // process with the most up-to-date information about our memory usage.
+      SendUmaStatsToHost();
+  }
+}
+
+bool GpuMemoryManager::EnsureGPUMemoryAvailable(uint64_t /* size_needed */) {
+  // TODO: Check if there is enough space. Lose contexts until there is.
+  return true;
+}
+
+uint64_t GpuMemoryManager::GetTrackerMemoryUsage(
+    gpu::gles2::MemoryTracker* tracker) const {
+  TrackingGroupMap::const_iterator tracking_group_it =
+      tracking_groups_.find(tracker);
+  DCHECK(tracking_group_it != tracking_groups_.end());
+  return tracking_group_it->second->GetSize();
+}
+
+GpuMemoryTrackingGroup* GpuMemoryManager::CreateTrackingGroup(
+    base::ProcessId pid, gpu::gles2::MemoryTracker* memory_tracker) {
+  GpuMemoryTrackingGroup* tracking_group = new GpuMemoryTrackingGroup(
+      pid, memory_tracker, this);
+  DCHECK(!tracking_groups_.count(tracking_group->GetMemoryTracker()));
+  tracking_groups_.insert(std::make_pair(tracking_group->GetMemoryTracker(),
+                                         tracking_group));
+  return tracking_group;
+}
+
+void GpuMemoryManager::OnDestroyTrackingGroup(
+    GpuMemoryTrackingGroup* tracking_group) {
+  DCHECK(tracking_groups_.count(tracking_group->GetMemoryTracker()));
+  tracking_groups_.erase(tracking_group->GetMemoryTracker());
+}
+
+void GpuMemoryManager::GetVideoMemoryUsageStats(
+    gpu::VideoMemoryUsageStats* video_memory_usage_stats) const {
+  // For each context group, assign its memory usage to its PID
+  video_memory_usage_stats->process_map.clear();
+  for (TrackingGroupMap::const_iterator i =
+       tracking_groups_.begin(); i != tracking_groups_.end(); ++i) {
+    const GpuMemoryTrackingGroup* tracking_group = i->second;
+    video_memory_usage_stats->process_map[
+        tracking_group->GetPid()].video_memory += tracking_group->GetSize();
+  }
+
+  // Assign the total across all processes in the GPU process
+  video_memory_usage_stats->process_map[
+      base::GetCurrentProcId()].video_memory = GetCurrentUsage();
+  video_memory_usage_stats->process_map[
+      base::GetCurrentProcId()].has_duplicates = true;
+
+  video_memory_usage_stats->bytes_allocated = GetCurrentUsage();
+  video_memory_usage_stats->bytes_allocated_historical_max =
+      bytes_allocated_historical_max_;
+}
+
+void GpuMemoryManager::SendUmaStatsToHost() {
+  if (!channel_manager_)
+    return;
+  gpu::GPUMemoryUmaStats params;
+  params.bytes_allocated_current = GetCurrentUsage();
+  params.bytes_allocated_max = bytes_allocated_historical_max_;
+  params.context_group_count = static_cast<uint32_t>(tracking_groups_.size());
+  channel_manager_->delegate()->GpuMemoryUmaStats(params);
+}
+}  // namespace content