libs/common_time/diag_thread.h

   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
  23 namespace android {
  24
  25 class CommonClock;
  26 class LocalClock;
  27
  28 class 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__