1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef SIMPLE_PERF_INPLACE_SAMPLER_CLIENT_H_
18#define SIMPLE_PERF_INPLACE_SAMPLER_CLIENT_H_
19
20#include <memory>
21#include <set>
22#include <vector>
23
24#include "event_attr.h"
25#include "record.h"
26#include "UnixSocket.h"
27
28class InplaceSamplerClient {
29 public:
30  static std::unique_ptr<InplaceSamplerClient> Create(const perf_event_attr& attr, pid_t pid,
31                                                      const std::set<pid_t>& tids);
32  uint64_t Id() const;
33  bool IsClosed() {
34    return conn_->IsClosed();
35  }
36  bool StartPolling(IOEventLoop& loop, const std::function<bool(Record*)>& record_callback,
37                    const std::function<bool()>& close_callback);
38  bool StopProfiling(IOEventLoop& loop, const std::function<bool()>& close_callback);
39
40 private:
41  InplaceSamplerClient(const perf_event_attr& attr, pid_t pid, const std::set<pid_t>& tids);
42  bool ConnectServer();
43  bool SendStartProfilingMessage();
44  bool HandleMessage(const UnixSocketMessage& msg);
45
46  const perf_event_attr attr_;
47  const pid_t pid_;
48  const std::set<pid_t> tids_;
49  uint32_t sample_freq_;
50  std::unique_ptr<UnixSocketConnection> conn_;
51  std::function<bool(Record*)> record_callback_;
52  bool got_start_profiling_reply_msg_;
53};
54
55#endif  // SIMPLE_PERF_INPLACE_SAMPLER_CLIENT_H_
56