gpu_tracer.h revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// This file contains the GPUTrace class.
6#ifndef GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
7#define GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
8
9#include <string>
10
11#include "base/basictypes.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/memory/weak_ptr.h"
14#include "base/threading/thread.h"
15#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
16#include "gpu/gpu_export.h"
17#include "ui/gl/gl_bindings.h"
18
19namespace gpu {
20namespace gles2 {
21
22// Id used to keep trace namespaces separate
23enum GpuTracerSource {
24  kTraceGroupMarker = 0,
25  kTraceCHROMIUM = 1,
26  kTraceDecoder = 2,
27};
28
29// Traces GPU Commands.
30class GPUTracer {
31 public:
32  static scoped_ptr<GPUTracer> Create(gles2::GLES2Decoder* decoder);
33
34  GPUTracer();
35  virtual ~GPUTracer();
36
37  // Scheduled processing in decoder begins.
38  virtual bool BeginDecoding() = 0;
39
40  // Scheduled processing in decoder ends.
41  virtual bool EndDecoding() = 0;
42
43  // Begin a trace marker.
44  virtual bool Begin(const std::string& name, GpuTracerSource source) = 0;
45
46  // End the last started trace marker.
47  virtual bool End(GpuTracerSource source) = 0;
48
49  virtual bool IsTracing() = 0;
50
51  // Retrieve the name of the current open trace.
52  // Returns empty string if no current open trace.
53  virtual const std::string& CurrentName() const = 0;
54
55 private:
56  DISALLOW_COPY_AND_ASSIGN(GPUTracer);
57};
58
59class Outputter : public base::RefCounted<Outputter> {
60 public:
61  virtual void Trace(const std::string& name,
62                     int64 start_time,
63                     int64 end_time) = 0;
64
65 protected:
66  virtual ~Outputter() {}
67  friend class base::RefCounted<Outputter>;
68};
69
70class TraceOutputter : public Outputter {
71 public:
72  static scoped_refptr<TraceOutputter> Create(const std::string& name);
73  virtual void Trace(const std::string& name,
74                     int64 start_time,
75                     int64 end_time) OVERRIDE;
76
77 protected:
78  friend class base::RefCounted<Outputter>;
79  explicit TraceOutputter(const std::string& name);
80  virtual ~TraceOutputter();
81
82  base::Thread named_thread_;
83  uint64 local_trace_id_;
84
85  DISALLOW_COPY_AND_ASSIGN(TraceOutputter);
86};
87
88class GPU_EXPORT Trace : public base::RefCounted<Trace> {
89 public:
90  explicit Trace(const std::string& name) : name_(name) {}
91
92  virtual void Start() = 0;
93  virtual void End() = 0;
94
95  // True if the the results of this query are available.
96  virtual bool IsAvailable() = 0;
97
98  virtual bool IsProcessable();
99  virtual void Process() = 0;
100
101  virtual const std::string& name();
102
103 protected:
104  virtual ~Trace() {}
105
106 private:
107  friend class base::RefCounted<Trace>;
108
109  std::string name_;
110
111  DISALLOW_COPY_AND_ASSIGN(Trace);
112};
113
114class GPU_EXPORT GLARBTimerTrace : public Trace {
115 public:
116  GLARBTimerTrace(scoped_refptr<Outputter> outputter,
117                  const std::string& name,
118                  int64 offset);
119
120  // Implementation of Tracer
121  virtual void Start() OVERRIDE;
122  virtual void End() OVERRIDE;
123  virtual bool IsAvailable() OVERRIDE;
124  virtual void Process() OVERRIDE;
125
126 private:
127  virtual ~GLARBTimerTrace();
128
129  void Output();
130
131  scoped_refptr<Outputter> outputter_;
132
133  int64 offset_;
134  int64 start_time_;
135  int64 end_time_;
136  bool end_requested_;
137
138  GLuint queries_[2];
139
140  DISALLOW_COPY_AND_ASSIGN(GLARBTimerTrace);
141};
142
143}  // namespace gles2
144}  // namespace gpu
145
146#endif  // GPU_COMMAND_BUFFER_SERVICE_GPU_TRACER_H_
147