gpu: Associate all GpuMemoryBuffers with unique IDs.

content/common/gpu/client/gpu_memory_buffer_impl_mac.cc

 // Copyright 2013 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/client/gpu_memory_buffer_impl.h"
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h"
 #include "content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.h"
 
 namespace content {
 
 // static
-void GpuMemoryBufferImpl::Create(const gfx::Size& size,
+void GpuMemoryBufferImpl::Create(gfx::GpuMemoryBufferId id,
+                                 const gfx::Size& size,
                                  Format format,
                                  Usage usage,
                                  int client_id,
                                  const CreationCallback& callback) {
   if (GpuMemoryBufferImplIOSurface::IsConfigurationSupported(format, usage)) {
-    GpuMemoryBufferImplIOSurface::Create(size, format, client_id, callback);
+    GpuMemoryBufferImplIOSurface::Create(id, size, format, client_id, callback);
     return;
   }
 
   if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
           size, format, usage)) {
-    GpuMemoryBufferImplSharedMemory::Create(size, format, callback);
+    GpuMemoryBufferImplSharedMemory::Create(id, size, format, callback);
     return;
   }
 
   callback.Run(scoped_ptr<GpuMemoryBufferImpl>());
 }
 
 // static
 void GpuMemoryBufferImpl::AllocateForChildProcess(
+    gfx::GpuMemoryBufferId id,
     const gfx::Size& size,
     Format format,
     Usage usage,
     base::ProcessHandle child_process,
     int child_client_id,
     const AllocationCallback& callback) {
   if (GpuMemoryBufferImplIOSurface::IsConfigurationSupported(format, usage)) {
     GpuMemoryBufferImplIOSurface::AllocateForChildProcess(
-        size, format, child_client_id, callback);
+        id, size, format, child_client_id, callback);
     return;
   }
 
   if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
           size, format, usage)) {
     GpuMemoryBufferImplSharedMemory::AllocateForChildProcess(
-        size, format, child_process, callback);
+        id, size, format, child_process, callback);
     return;
   }
 
   callback.Run(gfx::GpuMemoryBufferHandle());
 }
 
 // static
 void GpuMemoryBufferImpl::DeletedByChildProcess(
     gfx::GpuMemoryBufferType type,
-    const gfx::GpuMemoryBufferId& id,
+    gfx::GpuMemoryBufferId id,
     base::ProcessHandle child_process,
     int child_client_id,
     uint32 sync_point) {
   switch (type) {
     case gfx::SHARED_MEMORY_BUFFER:
       break;
     case gfx::IO_SURFACE_BUFFER:
-      if (id.secondary_id != child_client_id) {
-        LOG(ERROR)
-            << "Child attempting to delete GpuMemoryBuffer it does not own";
-      } else {
-        GpuMemoryBufferImplIOSurface::DeletedByChildProcess(id, sync_point);
-      }
+      GpuMemoryBufferImplIOSurface::DeletedByChildProcess(
+          id, child_client_id, sync_point);
       break;
     default:
       NOTREACHED();
+      break;
   }
 }
 
 // static
 scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImpl::CreateFromHandle(
     const gfx::GpuMemoryBufferHandle& handle,
     const gfx::Size& size,
     Format format,
     const DestructionCallback& callback) {
   switch (handle.type) {
     case gfx::SHARED_MEMORY_BUFFER:
       return GpuMemoryBufferImplSharedMemory::CreateFromHandle(
           handle, size, format, callback);
     case gfx::IO_SURFACE_BUFFER:
       return GpuMemoryBufferImplIOSurface::CreateFromHandle(
           handle, size, format, callback);
     default:
       return scoped_ptr<GpuMemoryBufferImpl>();
   }
 }
 
 }  // namespace content