File size: 3,879 Bytes
9c6594c
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree.
 */

// Mediator for initialization and profiler control

#pragma once

#include <atomic>
#include <chrono>
#include <deque>
#include <functional>
#include <memory>
#include <mutex>
#include <set>
#include <string>
#include <thread>
#include <vector>

#include "ActivityProfilerInterface.h"
#include "ActivityTraceInterface.h"
#include "ActivityType.h"
#include "ClientInterface.h"
#include "GenericTraceActivity.h"
#include "IActivityProfiler.h"
#include "ILoggerObserver.h"
#include "LoggingAPI.h"
#include "TraceSpan.h"

#include "ThreadUtil.h"

extern "C" {
void suppressLibkinetoLogMessages();
int InitializeInjection(void);
void libkineto_init(bool cpuOnly, bool logOnError);
bool hasTestEnvVar();
}

namespace libkineto {

class Config;
class ConfigLoader;

struct CpuTraceBuffer {
  template <class... Args>
  void emplace_activity(Args&&... args) {
    activities.emplace_back(
        std::make_unique<GenericTraceActivity>(std::forward<Args>(args)...));
  }

  static GenericTraceActivity& toRef(
      std::unique_ptr<GenericTraceActivity>& ref) {
    return *ref;
  }

  static const GenericTraceActivity& toRef(
      const std::unique_ptr<GenericTraceActivity>& ref) {
    return *ref;
  }

  TraceSpan span{0, 0, "none"};
  int gpuOpCount;
  std::deque<std::unique_ptr<GenericTraceActivity>> activities;
};

using ChildActivityProfilerFactory =
    std::function<std::unique_ptr<IActivityProfiler>()>;

class LibkinetoApi {
 public:
  explicit LibkinetoApi(ConfigLoader& configLoader)
      : configLoader_(configLoader) {}

  // Called by client that supports tracing API.
  // libkineto can still function without this.
  void registerClient(ClientInterface* client);

  // Called by libkineto on init
  void registerProfiler(std::unique_ptr<ActivityProfilerInterface> profiler) {
    activityProfiler_ = std::move(profiler);
    initClientIfRegistered();
  }

  ActivityProfilerInterface& activityProfiler() {
    return *activityProfiler_;
  }

  ClientInterface* client() {
    return client_;
  }

  void initProfilerIfRegistered() {
    static std::once_flag once;
    if (activityProfiler_) {
      std::call_once(once, [this] {
        if (!activityProfiler_->isInitialized()) {
          activityProfiler_->init();
          initChildActivityProfilers();
        }
      });
    }
  }

  bool isProfilerInitialized() const {
    return activityProfiler_ && activityProfiler_->isInitialized();
  }

  bool isProfilerRegistered() const {
    return activityProfiler_ != nullptr;
  }

  void suppressLogMessages() {
    suppressLibkinetoLogMessages();
  }

  void resetKinetoTLS() {
    resetTLS();
  }

  // Provides access to profier configuration manaegement
  ConfigLoader& configLoader() {
    return configLoader_;
  }

  void registerProfilerFactory(ChildActivityProfilerFactory factory) {
    if (isProfilerInitialized()) {
      activityProfiler_->addChildActivityProfiler(factory());
    } else {
      childProfilerFactories_.push_back(factory);
    }
  }

 private:
  void initChildActivityProfilers() {
    if (!isProfilerInitialized()) {
      return;
    }
    for (const auto& factory : childProfilerFactories_) {
      activityProfiler_->addChildActivityProfiler(factory());
    }
    childProfilerFactories_.clear();
  }

  // Client is initialized once both it and libkineto has registered
  void initClientIfRegistered();

  ConfigLoader& configLoader_;
  std::unique_ptr<ActivityProfilerInterface> activityProfiler_{};
  ClientInterface* client_{};
  int32_t clientRegisterThread_{0};

  std::vector<ChildActivityProfilerFactory> childProfilerFactories_;
};

// Singleton
LibkinetoApi& api();

} // namespace libkineto