github.com/cellofellow/gopkg@v0.0.0-20140722061823-eec0544a62ad/database/leveldb.chai2010/src/port/port_posix.cc (about)

     1  // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style license that can be
     3  // found in the LICENSE file. See the AUTHORS file for names of contributors.
     4  
     5  #include "port/port_posix.h"
     6  
     7  #include <cstdlib>
     8  #include <stdio.h>
     9  #include <string.h>
    10  #include "util/logging.h"
    11  
    12  namespace leveldb {
    13  namespace port {
    14  
    15  static void PthreadCall(const char* label, int result) {
    16    if (result != 0) {
    17      fprintf(stderr, "pthread %s: %s\n", label, strerror(result));
    18      abort();
    19    }
    20  }
    21  
    22  Mutex::Mutex() { PthreadCall("init mutex", pthread_mutex_init(&mu_, NULL)); }
    23  
    24  Mutex::~Mutex() { PthreadCall("destroy mutex", pthread_mutex_destroy(&mu_)); }
    25  
    26  void Mutex::Lock() { PthreadCall("lock", pthread_mutex_lock(&mu_)); }
    27  
    28  void Mutex::Unlock() { PthreadCall("unlock", pthread_mutex_unlock(&mu_)); }
    29  
    30  CondVar::CondVar(Mutex* mu)
    31      : mu_(mu) {
    32      PthreadCall("init cv", pthread_cond_init(&cv_, NULL));
    33  }
    34  
    35  CondVar::~CondVar() { PthreadCall("destroy cv", pthread_cond_destroy(&cv_)); }
    36  
    37  void CondVar::Wait() {
    38    PthreadCall("wait", pthread_cond_wait(&cv_, &mu_->mu_));
    39  }
    40  
    41  void CondVar::Signal() {
    42    PthreadCall("signal", pthread_cond_signal(&cv_));
    43  }
    44  
    45  void CondVar::SignalAll() {
    46    PthreadCall("broadcast", pthread_cond_broadcast(&cv_));
    47  }
    48  
    49  void InitOnce(OnceType* once, void (*initializer)()) {
    50    PthreadCall("once", pthread_once(once, initializer));
    51  }
    52  
    53  }  // namespace port
    54  }  // namespace leveldb