Enforce a memory limit on MappedMemoryManager

gpu/command_buffer/client/gles2_implementation.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 
 #include <GLES2/gl2.h>
 
 #include <map>
 #include <queue>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "gles2_impl_export.h"
 #include "gpu/command_buffer/client/buffer_tracker.h"
 #include "gpu/command_buffer/client/client_context_state.h"
 #include "gpu/command_buffer/client/gles2_cmd_helper.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "gpu/command_buffer/client/gpu_memory_buffer_tracker.h"
 #include "gpu/command_buffer/client/image_factory.h"
+#include "gpu/command_buffer/client/mapped_memory.h"
 #include "gpu/command_buffer/client/query_tracker.h"
 #include "gpu/command_buffer/client/ref_counted.h"
 #include "gpu/command_buffer/client/ring_buffer.h"
 #include "gpu/command_buffer/client/share_group.h"
 #include "gpu/command_buffer/common/compiler_specific.h"
 #include "gpu/command_buffer/common/debug_marker_manager.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 
 #if !defined(NDEBUG) && !defined(__native_client__) && !defined(GLES2_CONFORMANCE_TESTS)  // NOLINT
   #if defined(GLES2_INLINE_OPTIMIZATION)
@@ skipping 57 matching lines @@
         (ptr[0] == static_cast<type>(0) || ptr[0] == static_cast<type>(-1)));
 
 #define GPU_CLIENT_VALIDATE_DESTINATION_OPTIONAL_INITALIZATION(type, ptr) \
     GPU_CLIENT_VALIDATE_DESTINATION_INITALIZATION_ASSERT(!ptr || \
         (ptr[0] == static_cast<type>(0) || ptr[0] == static_cast<type>(-1)));
 
 struct GLUniformDefinitionCHROMIUM;
 
 namespace gpu {
 
-class MappedMemoryManager;
 class ScopedTransferBufferPtr;
 class TransferBufferInterface;
 
 namespace gles2 {
 
 class ImageFactory;
 class VertexArrayObjectManager;
 
 // This class emulates GLES2 over command buffers. It can be used by a client
 // program so that the program does not need deal with shared memory and command
 // buffer management. See gl2_lib.h.  Note that there is a performance gain to
 // be had by changing your code to use command buffers directly by using the
 // GLES2CmdHelper but that entails changing your code to use and deal with
 // shared memory and synchronization issues.
 class GLES2_IMPL_EXPORT GLES2Implementation : public GLES2Interface {
  public:
+  enum MappedMemoryLimit {
+    kNoLimit = MappedMemoryManager::kNoLimit,
+  };
   class ErrorMessageCallback {
    public:
     virtual ~ErrorMessageCallback() { }
     virtual void OnErrorMessage(const char* msg, int id) = 0;
   };
 
   // Stores GL state that never changes.
   struct GLES2_IMPL_EXPORT GLStaticState {
     GLStaticState();
     ~GLStaticState();
@@ skipping 51 matching lines @@
       bool bind_generates_resource,
       ImageFactory* image_factory);
 
   virtual ~GLES2Implementation();
 
   bool Initialize(
       unsigned int starting_transfer_buffer_size,
       unsigned int min_transfer_buffer_size,
       unsigned int max_transfer_buffer_size);
 
+  bool InitializeWithMemoryLimit(
+      unsigned int starting_transfer_buffer_size,
+      unsigned int min_transfer_buffer_size,
+      unsigned int max_transfer_buffer_size,
+      unsigned int mapped_memory_limit);
+
   // The GLES2CmdHelper being used by this GLES2Implementation. You can use
   // this to issue cmds at a lower level for certain kinds of optimization.
   GLES2CmdHelper* helper() const;
 
   // Gets client side generated errors.
   GLenum GetClientSideGLError();
 
   // Include the auto-generated part of this class. We split this because
   // it means we can easily edit the non-auto generated parts right here in
   // this file instead of having to edit some template or the code generator.
   #include "gpu/command_buffer/client/gles2_implementation_autogen.h"
 
   virtual void DisableVertexAttribArray(GLuint index) OVERRIDE;
   virtual void EnableVertexAttribArray(GLuint index) OVERRIDE;
   virtual void GetVertexAttribfv(
       GLuint index, GLenum pname, GLfloat* params) OVERRIDE;
   virtual void GetVertexAttribiv(
       GLuint index, GLenum pname, GLint* params) OVERRIDE;
 
   void GetProgramInfoCHROMIUMHelper(GLuint program, std::vector<int8>* result);
   GLint GetAttribLocationHelper(GLuint program, const char* name);
   GLint GetUniformLocationHelper(GLuint program, const char* name);
   bool GetActiveAttribHelper(
       GLuint program, GLuint index, GLsizei bufsize, GLsizei* length,
       GLint* size, GLenum* type, char* name);
   bool GetActiveUniformHelper(
       GLuint program, GLuint index, GLsizei bufsize, GLsizei* length,
       GLint* size, GLenum* type, char* name);
 
-  void SetSharedMemoryChunkSizeMultiple(unsigned int multiple);
 
   void FreeUnusedSharedMemory();
   void FreeEverything();
 
   void SetErrorMessageCallback(ErrorMessageCallback* callback) {
     error_message_callback_ = callback;
   }
 
   ShareGroup* share_group() const {
     return share_group_.get();
@@ skipping 474 matching lines @@
 
 inline bool GLES2Implementation::GetTexParameterivHelper(
     GLenum /* target */, GLenum /* pname */, GLint* /* params */) {
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_