gpu in-memory program cache implementation with a memory limit + lru eviction.

content/common/gpu/gpu_channel_manager.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 "content/common/gpu/gpu_channel_manager.h"
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "content/common/child_thread.h"
 #include "content/common/gpu/gpu_channel.h"
 #include "content/common/gpu/gpu_memory_manager.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/gpu/sync_point_manager.h"
+#include "gpu/command_buffer/service/feature_info.h"
+#include "gpu/command_buffer/service/gpu_switches.h"
 #include "gpu/command_buffer/service/mailbox_manager.h"
+#include "gpu/command_buffer/service/memory_program_cache.h"
+#include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_share_group.h"
 
 GpuChannelManager::GpuChannelManager(ChildThread* gpu_child_thread,
                                      GpuWatchdog* watchdog,
                                      base::MessageLoopProxy* io_message_loop,
                                      base::WaitableEvent* shutdown_event)
     : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)),
       io_message_loop_(io_message_loop),
       shutdown_event_(shutdown_event),
       gpu_child_thread_(gpu_child_thread),
       ALLOW_THIS_IN_INITIALIZER_LIST(gpu_memory_manager_(this,
           GpuMemoryManager::kDefaultMaxSurfacesWithFrontbufferSoftLimit)),
       watchdog_(watchdog),
-      sync_point_manager_(new SyncPointManager) {
+      sync_point_manager_(new SyncPointManager),
+      program_cache_(NULL) {
   DCHECK(gpu_child_thread);
   DCHECK(io_message_loop);
   DCHECK(shutdown_event);
 }
 
 GpuChannelManager::~GpuChannelManager() {
   gpu_channels_.clear();
 }
 
+gpu::gles2::ProgramCache* GpuChannelManager::program_cache() {
+  if (!program_cache_.get() &&
+      (gfx::g_ARB_get_program_binary || gfx::g_OES_get_program_binary) &&
+      !CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableGpuProgramCache)) {
+    program_cache_.reset(new gpu::gles2::MemoryProgramCache());
+  }
+  return program_cache_.get();
+}
+
 void GpuChannelManager::RemoveChannel(int client_id) {
   gpu_channels_.erase(client_id);
 }
 
 int GpuChannelManager::GenerateRouteID() {
   static int last_id = 0;
   return ++last_id;
 }
 
 void GpuChannelManager::AddRoute(int32 routing_id, IPC::Listener* listener) {
@@ skipping 11 matching lines @@
   else
     return iter->second;
 }
 
 void GpuChannelManager::AppendAllCommandBufferStubs(
     std::vector<GpuCommandBufferStubBase*>& stubs) {
   for (GpuChannelMap::const_iterator it = gpu_channels_.begin();
       it != gpu_channels_.end(); ++it ) {
     it->second->AppendAllCommandBufferStubs(stubs);
   }
-
 }
 
 bool GpuChannelManager::OnMessageReceived(const IPC::Message& msg) {
   bool msg_is_ok = true;
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(GpuChannelManager, msg, msg_is_ok)
     IPC_MESSAGE_HANDLER(GpuMsg_EstablishChannel, OnEstablishChannel)
     IPC_MESSAGE_HANDLER(GpuMsg_CloseChannel, OnCloseChannel)
     IPC_MESSAGE_HANDLER(GpuMsg_CreateViewCommandBuffer,
                         OnCreateViewCommandBuffer)
@@ skipping 74 matching lines @@
 void GpuChannelManager::LoseAllContexts() {
   MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&GpuChannelManager::OnLoseAllContexts,
                  weak_factory_.GetWeakPtr()));
 }
 
 void GpuChannelManager::OnLoseAllContexts() {
   gpu_channels_.clear();
 }