Fixed not-unique event 'id' in TRACE_EVENT from GLARBTimerTrace

gpu/command_buffer/service/gpu_tracer.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.
 
 // This file contains the GPUTrace class.
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/thread.h"
+
+#include "ui/gl/gl_bindings.h"
 
 namespace gpu {
 namespace gles2 {
 
 // Traces GPU Commands.
 class GPUTracer {
  public:
   static scoped_ptr<GPUTracer> Create();
 
   GPUTracer() {}
   virtual ~GPUTracer() {}
 
   // Begin a trace.
   virtual bool Begin(const std::string& name) = 0;
 
   // End the last started trace.
   virtual bool End() = 0;
 
   // Retrieve the name of the current open trace.
   // Returns empty string if no current open trace.
   virtual const std::string& CurrentName() const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GPUTracer);
 };
 
+class Outputter : public base::RefCounted<Outputter> {
+ public:
+  virtual void Trace(const std::string& name,
+      int64 start_time, int64 end_time) = 0;
+
+ protected:
+  virtual ~Outputter() {}
+  friend class base::RefCounted<Outputter>;
+};
+
+class TraceOutputter
+    : public Outputter, private base::Thread {
+ public:
+  static scoped_refptr<TraceOutputter> Create(const std::string& name);
+  virtual void Trace(const std::string& name, int64 start_time,
+      int64 end_time) OVERRIDE;
+
+ protected:
+  friend class base::RefCounted<Outputter>;
+  explicit TraceOutputter(const std::string& name);
+  virtual ~TraceOutputter();
+
+  uint64 local_trace_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(TraceOutputter);
+};
+
+class Trace : public base::RefCounted<Trace> {
+ public:
+  explicit Trace(const std::string& name) : name_(name) {}
+
+  virtual void Start() = 0;
+  virtual void End() = 0;
+
+  // True if the the results of this query are available.
+  virtual bool IsAvailable() = 0;
+
+  virtual bool IsProcessable();
+  virtual void Process() = 0;
+
+  virtual const std::string& name();
+
+ protected:
+  virtual ~Trace() {}
+
+ private:
+  friend class base::RefCounted<Trace>;
+
+  std::string name_;
+
+  DISALLOW_COPY_AND_ASSIGN(Trace);
+};
+
+class GLARBTimerTrace : public Trace {
+ public:
+  GLARBTimerTrace(scoped_refptr<Outputter> outputter,
+                  const std::string& name,
+                  int64 offset);
+
+  // Implementation of Tracer
+  virtual void Start() OVERRIDE;
+  virtual void End() OVERRIDE;
+  virtual bool IsAvailable() OVERRIDE;
+  virtual void Process() OVERRIDE;
+
+ private:
+  virtual ~GLARBTimerTrace();
+
+  void Output();
+
+  scoped_refptr<Outputter> outputter_;
+
+  int64 offset_;
+  int64 start_time_;
+  int64 end_time_;
+  bool end_requested_;
+
+  GLuint queries_[2];
+
+  DISALLOW_COPY_AND_ASSIGN(GLARBTimerTrace);
+};
+
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_