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      1 /*
      2  * Copyright (C) 2015 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 _MEMORY_REPLAY_THREADS_H
     18 #define _MEMORY_REPLAY_THREADS_H
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 
     23 class Pointers;
     24 class Thread;
     25 
     26 class Threads {
     27  public:
     28   Threads(Pointers* pointers, size_t max_threads);
     29   virtual ~Threads();
     30 
     31   Thread* CreateThread(pid_t tid);
     32   Thread* FindThread(pid_t tid);
     33   void WaitForAllToQuiesce();
     34   void Finish(Thread* thread);
     35   void FinishAll();
     36 
     37   size_t num_threads() { return num_threads_; }
     38   size_t max_threads() { return max_threads_; }
     39   uint64_t total_time_nsecs() { return total_time_nsecs_; }
     40 
     41  private:
     42   Pointers* pointers_ = nullptr;
     43   Thread* threads_ = nullptr;
     44   size_t data_size_ = 0;
     45   size_t max_threads_ = 0;
     46   size_t num_threads_= 0;
     47   uint64_t total_time_nsecs_ = 0;
     48 
     49   Thread* FindEmptyEntry(pid_t tid);
     50   size_t GetHashEntry(pid_t tid);
     51 
     52   void ClearData();
     53 
     54   friend Thread;
     55 };
     56 
     57 #endif // _MEMORY_REPLAY_THREADS_H
     58