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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include "system.h"
21 :
22 : #include <osl/mutex.h>
23 : #include <osl/diagnose.h>
24 :
25 : #include <pthread.h>
26 : #include <stdlib.h>
27 :
28 : #if defined LINUX /* bad hack */
29 : int pthread_mutexattr_setkind_np(pthread_mutexattr_t *, int);
30 : #define pthread_mutexattr_settype pthread_mutexattr_setkind_np
31 : #define PTHREAD_MUTEX_RECURSIVE PTHREAD_MUTEX_RECURSIVE_NP
32 : #endif
33 :
34 : typedef struct _oslMutexImpl
35 : {
36 : pthread_mutex_t mutex;
37 : } oslMutexImpl;
38 :
39 : /*****************************************************************************/
40 : /* osl_createMutex */
41 : /*****************************************************************************/
42 3391057 : oslMutex SAL_CALL osl_createMutex()
43 : {
44 3391057 : oslMutexImpl* pMutex = (oslMutexImpl*) malloc(sizeof(oslMutexImpl));
45 : pthread_mutexattr_t aMutexAttr;
46 3391057 : int nRet=0;
47 :
48 : OSL_ASSERT(pMutex);
49 :
50 3391057 : if ( pMutex == 0 )
51 : {
52 0 : return 0;
53 : }
54 :
55 3391057 : pthread_mutexattr_init(&aMutexAttr);
56 :
57 3391057 : nRet = pthread_mutexattr_settype(&aMutexAttr, PTHREAD_MUTEX_RECURSIVE);
58 3391057 : if( nRet == 0 )
59 3391057 : nRet = pthread_mutex_init(&(pMutex->mutex), &aMutexAttr);
60 3391057 : if ( nRet != 0 )
61 : {
62 : OSL_TRACE("osl_createMutex : mutex init/setattr failed. Errno: %d; %s\n",
63 : nRet, strerror(nRet));
64 :
65 0 : free(pMutex);
66 0 : pMutex = 0;
67 : }
68 :
69 3391057 : pthread_mutexattr_destroy(&aMutexAttr);
70 :
71 3391056 : return pMutex;
72 : }
73 :
74 3223345 : void SAL_CALL osl_destroyMutex(oslMutexImpl *pMutex)
75 : {
76 : OSL_ASSERT(pMutex);
77 :
78 3223345 : if ( pMutex != 0 )
79 : {
80 3223345 : int nRet=0;
81 :
82 3223345 : nRet = pthread_mutex_destroy(&(pMutex->mutex));
83 : if ( nRet != 0 )
84 : {
85 : OSL_TRACE("osl_destroyMutex : mutex destroy failed. Errno: %d; %s\n",
86 : nRet, strerror(nRet));
87 : }
88 :
89 3223356 : free(pMutex);
90 : }
91 :
92 3223356 : return;
93 : }
94 :
95 163439915 : sal_Bool SAL_CALL osl_acquireMutex(oslMutexImpl *pMutex)
96 : {
97 : OSL_ASSERT(pMutex);
98 :
99 163439915 : if ( pMutex != 0 )
100 : {
101 163439915 : int nRet=0;
102 :
103 163439915 : nRet = pthread_mutex_lock(&(pMutex->mutex));
104 163439905 : if ( nRet != 0 )
105 : {
106 : OSL_TRACE("osl_acquireMutex : mutex lock failed. Errno: %d; %s\n",
107 : nRet, strerror(nRet));
108 0 : return sal_False;
109 : }
110 163439905 : return sal_True;
111 : }
112 :
113 : /* not initialized */
114 0 : return sal_False;
115 : }
116 :
117 30 : sal_Bool SAL_CALL osl_tryToAcquireMutex(oslMutexImpl *pMutex)
118 : {
119 : OSL_ASSERT(pMutex);
120 :
121 30 : if ( pMutex )
122 : {
123 30 : int nRet = 0;
124 30 : nRet = pthread_mutex_trylock(&(pMutex->mutex));
125 30 : if ( nRet != 0 )
126 0 : return sal_False;
127 :
128 30 : return sal_True;
129 : }
130 :
131 : /* not initialized */
132 0 : return sal_False;
133 : }
134 :
135 163440076 : sal_Bool SAL_CALL osl_releaseMutex(oslMutexImpl *pMutex)
136 : {
137 : OSL_ASSERT(pMutex);
138 :
139 163440076 : if ( pMutex )
140 : {
141 163440076 : int nRet=0;
142 163440076 : nRet = pthread_mutex_unlock(&(pMutex->mutex));
143 163440201 : if ( nRet != 0 )
144 : {
145 : OSL_TRACE("osl_releaseMutex : mutex unlock failed. Errno: %d; %s\n",
146 : nRet, strerror(nRet));
147 5 : return sal_False;
148 : }
149 :
150 163440196 : return sal_True;
151 : }
152 :
153 : /* not initialized */
154 0 : return sal_False;
155 : }
156 :
157 : static oslMutexImpl globalMutexImpl;
158 :
159 905 : static void globalMutexInitImpl(void) {
160 : pthread_mutexattr_t attr;
161 1810 : if (pthread_mutexattr_init(&attr) != 0 ||
162 1810 : pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) ||
163 1810 : pthread_mutex_init(&globalMutexImpl.mutex, &attr) != 0 ||
164 905 : pthread_mutexattr_destroy(&attr) != 0)
165 : {
166 0 : abort();
167 : }
168 905 : }
169 :
170 1434647 : oslMutex * SAL_CALL osl_getGlobalMutex()
171 : {
172 : /* necessary to get a "oslMutex *" */
173 : static oslMutex globalMutex = (oslMutex) &globalMutexImpl;
174 :
175 : static pthread_once_t once = PTHREAD_ONCE_INIT;
176 1434647 : if (pthread_once(&once, &globalMutexInitImpl) != 0) {
177 0 : abort();
178 : }
179 :
180 1434648 : return &globalMutex;
181 : }
182 :
183 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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