1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#if defined LINUX
// to define __USE_UNIX98, via _XOPEN_SOURCE, enabling pthread_mutexattr_settype
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#endif
#include "system.hxx"
#include <sal/log.hxx>
#include <osl/mutex.h>
#include <pthread.h>
#include <stdlib.h>
typedef struct _oslMutexImpl
{
pthread_mutex_t mutex;
} oslMutexImpl;
oslMutex SAL_CALL osl_createMutex()
{
oslMutexImpl* pMutex = static_cast<oslMutexImpl*>(malloc(sizeof(oslMutexImpl)));
pthread_mutexattr_t aMutexAttr;
int nRet=0;
SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
if ( pMutex == nullptr )
{
return nullptr;
}
pthread_mutexattr_init(&aMutexAttr);
nRet = pthread_mutexattr_settype(&aMutexAttr, PTHREAD_MUTEX_RECURSIVE);
if( nRet == 0 )
nRet = pthread_mutex_init(&(pMutex->mutex), &aMutexAttr);
if ( nRet != 0 )
{
SAL_WARN("sal.osl.mutex", "pthread_muxex_init failed: " << strerror(nRet));
free(pMutex);
pMutex = nullptr;
}
pthread_mutexattr_destroy(&aMutexAttr);
return pMutex;
}
void SAL_CALL osl_destroyMutex(oslMutexImpl *pMutex)
{
SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
if ( pMutex != nullptr )
{
int nRet=0;
nRet = pthread_mutex_destroy(&(pMutex->mutex));
if ( nRet != 0 )
{
SAL_WARN("sal.osl.mutex", "pthread_mutex_destroy failed: " << strerror(nRet));
}
free(pMutex);
}
return;
}
sal_Bool SAL_CALL osl_acquireMutex(oslMutexImpl *pMutex)
{
SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
if ( pMutex != nullptr )
{
int nRet=0;
nRet = pthread_mutex_lock(&(pMutex->mutex));
if ( nRet != 0 )
{
SAL_WARN("sal.osl.mutex", "pthread_mutex_lock failed: " << strerror(nRet));
return false;
}
return true;
}
/* not initialized */
return false;
}
sal_Bool SAL_CALL osl_tryToAcquireMutex(oslMutexImpl *pMutex)
{
bool result = false;
SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
if ( pMutex )
{
int nRet = 0;
nRet = pthread_mutex_trylock(&(pMutex->mutex));
if ( nRet == 0 )
result = true;
}
return result;
}
sal_Bool SAL_CALL osl_releaseMutex(oslMutexImpl *pMutex)
{
SAL_WARN_IF(!pMutex, "sal.osl.mutex", "null pMutex");
if ( pMutex )
{
int nRet=0;
nRet = pthread_mutex_unlock(&(pMutex->mutex));
if ( nRet != 0 )
{
SAL_WARN("sal.osl.mutex", "pthread_mutex_unlock failed: " << strerror(nRet));
return false;
}
return true;
}
/* not initialized */
return false;
}
static oslMutexImpl globalMutexImpl;
static void globalMutexInitImpl() {
pthread_mutexattr_t attr;
if (pthread_mutexattr_init(&attr) != 0 ||
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) ||
pthread_mutex_init(&globalMutexImpl.mutex, &attr) != 0 ||
pthread_mutexattr_destroy(&attr) != 0)
{
abort();
}
}
oslMutex * SAL_CALL osl_getGlobalMutex()
{
/* necessary to get a "oslMutex *" */
static oslMutex globalMutex = &globalMutexImpl;
static pthread_once_t once = PTHREAD_ONCE_INIT;
if (pthread_once(&once, &globalMutexInitImpl) != 0) {
abort();
}
return &globalMutex;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
