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

gpu/command_buffer/service/context_group.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/command_buffer/service/context_group.h"
 
+#include <algorithm>
 #include <string>
 
 #include "base/command_line.h"
 #include "base/string_util.h"
 #include "gpu/command_buffer/common/id_allocator.h"
 #include "gpu/command_buffer/service/buffer_manager.h"
 #include "gpu/command_buffer/service/framebuffer_manager.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 #include "gpu/command_buffer/service/mailbox_manager.h"
@@ skipping 15 matching lines @@
       enforce_gl_minimums_(CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnforceGLMinimums)),
       bind_generates_resource_(bind_generates_resource),
       max_vertex_attribs_(0u),
       max_texture_units_(0u),
       max_texture_image_units_(0u),
       max_vertex_texture_image_units_(0u),
       max_fragment_uniform_vectors_(0u),
       max_varying_vectors_(0u),
       max_vertex_uniform_vectors_(0u),
+      program_cache_(NULL),
       feature_info_(new FeatureInfo()) {
   {
     TransferBufferManager* manager = new TransferBufferManager();
     transfer_buffer_manager_.reset(manager);
     manager->Initialize();
   }
 
   id_namespaces_[id_namespaces::kBuffers].reset(new IdAllocator);
   id_namespaces_[id_namespaces::kFramebuffers].reset(new IdAllocator);
   id_namespaces_[id_namespaces::kProgramsAndShaders].reset(
@@ skipping 34 matching lines @@
   GLint max_samples = 0;
   if (feature_info_->feature_flags().chromium_framebuffer_multisample) {
     glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
   }
 
   buffer_manager_.reset(new BufferManager());
   framebuffer_manager_.reset(new FramebufferManager());
   renderbuffer_manager_.reset(new RenderbufferManager(
       max_renderbuffer_size, max_samples));
   shader_manager_.reset(new ShaderManager());
-  program_manager_.reset(new ProgramManager());
+  program_manager_.reset(new ProgramManager(program_cache_));
 
   // Lookup GL things we need to know.
   const GLint kGLES2RequiredMinimumVertexAttribs = 8u;
   if (!QueryGLFeatureU(
       GL_MAX_VERTEX_ATTRIBS, kGLES2RequiredMinimumVertexAttribs,
       &max_vertex_attribs_)) {
     LOG(ERROR) << "ContextGroup::Initialize failed because too few "
                << "vertex attributes supported.";
     return false;
   }
@@ skipping 188 matching lines @@
   GetIntegerv(pname, &value);
   bool result = CheckGLFeatureU(min_required, &value);
   *v = value;
   return result;
 }
 
 }  // namespace gles2
 }  // namespace gpu