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
11 namespace leveldb {
12 namespace port {
13
PthreadCall(const char * label,int result)14 static void PthreadCall(const char* label, int result) {
15 if (result != 0) {
16 fprintf(stderr, "pthread %s: %s\n", label, strerror(result));
17 abort();
18 }
19 }
20
Mutex()21 Mutex::Mutex() { PthreadCall("init mutex", pthread_mutex_init(&mu_, NULL)); }
22
~Mutex()23 Mutex::~Mutex() { PthreadCall("destroy mutex", pthread_mutex_destroy(&mu_)); }
24
Lock()25 void Mutex::Lock() { PthreadCall("lock", pthread_mutex_lock(&mu_)); }
26
Unlock()27 void Mutex::Unlock() { PthreadCall("unlock", pthread_mutex_unlock(&mu_)); }
28
CondVar(Mutex * mu)29 CondVar::CondVar(Mutex* mu)
30 : mu_(mu) {
31 PthreadCall("init cv", pthread_cond_init(&cv_, NULL));
32 }
33
~CondVar()34 CondVar::~CondVar() { PthreadCall("destroy cv", pthread_cond_destroy(&cv_)); }
35
Wait()36 void CondVar::Wait() {
37 PthreadCall("wait", pthread_cond_wait(&cv_, &mu_->mu_));
38 }
39
Signal()40 void CondVar::Signal() {
41 PthreadCall("signal", pthread_cond_signal(&cv_));
42 }
43
SignalAll()44 void CondVar::SignalAll() {
45 PthreadCall("broadcast", pthread_cond_broadcast(&cv_));
46 }
47
InitOnce(OnceType * once,void (* initializer)())48 void InitOnce(OnceType* once, void (*initializer)()) {
49 PthreadCall("once", pthread_once(once, initializer));
50 }
51
52 } // namespace port
53 } // namespace leveldb
54