diag_thread.h revision 9158825f9c41869689d6b1786d7c7aa8bdd524ce 
1/*
2 * Copyright (C) 2011 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 __DIAG_THREAD_H__
18#define __DIAG_THREAD_H__
19
20#include <utils/List.h>
21#include <utils/threads.h>
22
23namespace android {
24
25class CommonClock;
26class LocalClock;
27
28class DiagThread : public Thread {
29  public:
30    DiagThread(CommonClock* common_clock, LocalClock* local_clock);
31    ~DiagThread();
32
33    status_t      startWorkThread();
34    void          stopWorkThread();
35    virtual bool  threadLoop();
36
37    void pushDisciplineEvent(int64_t observed_local_time,
38                             int64_t observed_common_time,
39                             int64_t nominal_common_time,
40                             int32_t total_correction,
41                             int32_t rtt);
42
43  private:
44    typedef struct {
45        int64_t event_id;
46        int64_t action_local_time;
47        int64_t action_common_time;
48        int64_t observed_local_time;
49        int64_t observed_common_time;
50        int64_t nominal_common_time;
51        int32_t total_correction;
52        int32_t rtt;
53    } DisciplineEventRecord;
54
55    bool            openListenSocket();
56    void            cleanupListenSocket();
57    void            cleanupDataSocket();
58    void            resetLogIDs();
59
60    CommonClock*    common_clock_;
61    LocalClock*     local_clock_;
62    int             listen_fd_;
63    int             data_fd_;
64
65    int64_t         kernel_logID_basis_;
66    bool            kernel_logID_basis_known_;
67
68    static const size_t         kMaxDisciplineLogSize = 16;
69    Mutex                       discipline_log_lock_;
70    List<DisciplineEventRecord> discipline_log_;
71    int64_t                     discipline_log_ID_;
72};
73
74}  // namespace android
75
76#endif  //__ DIAG_THREAD_H__
77