Add tracing for GL texture objects

content/browser/gpu/browser_gpu_memory_buffer_manager.cc

 // Copyright 2014 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/browser/gpu/browser_gpu_memory_buffer_manager.h"
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/stringprintf.h"
@@ skipping 130 matching lines @@
   ~AllocateGpuMemoryBufferRequest() {}
   base::WaitableEvent event;
   gfx::Size size;
   gfx::GpuMemoryBuffer::Format format;
   gfx::GpuMemoryBuffer::Usage usage;
   int client_id;
   int surface_id;
   scoped_ptr<gfx::GpuMemoryBuffer> result;
 };
 
-BrowserGpuMemoryBufferManager::BrowserGpuMemoryBufferManager(int gpu_client_id)
+BrowserGpuMemoryBufferManager::BrowserGpuMemoryBufferManager(
+    int gpu_client_id,
+    uint64_t gpu_client_tracing_id)
     : factory_type_(GetGpuMemoryBufferFactoryType()),
       supported_configurations_(
           GetSupportedGpuMemoryBufferConfigurations(factory_type_)),
       gpu_client_id_(gpu_client_id),
+      gpu_client_tracing_id_(gpu_client_tracing_id),
       gpu_host_id_(0) {
   DCHECK(!g_gpu_memory_buffer_manager);
   g_gpu_memory_buffer_manager = this;
 }
 
 BrowserGpuMemoryBufferManager::~BrowserGpuMemoryBufferManager() {
   g_gpu_memory_buffer_manager = nullptr;
 }
 
 // static
@@ skipping 121 matching lines @@
       DCHECK(valid_size);
 
       dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
                       base::trace_event::MemoryAllocatorDump::kUnitsBytes,
                       buffer_size_in_bytes);
 
       // Create the cross-process ownership edge. If the client creates a
       // corresponding dump for the same buffer, this will avoid to
       // double-count them in tracing. If, instead, no other process will emit a
       // dump with the same guid, the segment will be accounted to the browser.
-      const uint64 client_tracing_process_id =
-          ChildProcessHostImpl::ChildProcessUniqueIdToTracingProcessId(
-              client_id);
+      uint64 client_tracing_process_id = ClientIdToTracingProcessId(client_id);
+
       base::trace_event::MemoryAllocatorDumpGuid shared_buffer_guid =
           gfx::GetGpuMemoryBufferGUIDForTracing(client_tracing_process_id,
                                                 buffer_id);
       pmd->CreateSharedGlobalAllocatorDump(shared_buffer_guid);
       pmd->AddOwnershipEdge(dump->guid(), shared_buffer_guid);
     }
   }
 
   return true;
 }
@@ skipping 274 matching lines @@
     return;
   }
 
   GpuProcessHost* host = GpuProcessHost::FromID(buffer_it->second.gpu_host_id);
   if (host)
     host->DestroyGpuMemoryBuffer(id, client_id, sync_point);
 
   buffers.erase(buffer_it);
 }
 
+uint64_t BrowserGpuMemoryBufferManager::ClientIdToTracingProcessId(
+    int client_id) const {
+  if (client_id == gpu_client_id_) {
+    // The gpu_client uses a fixed tracing ID.
+    return gpu_client_tracing_id_;
+  }
+
+  // In normal cases, |client_id| is a child process id, so we can perform
+  // the standard conversion.
+  return ChildProcessHostImpl::ChildProcessUniqueIdToTracingProcessId(
+      client_id);
+}
+
 }  // namespace content