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<h1>dbus-sysdeps-pthread.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/* dbus-sysdeps-pthread.c Implements threads using pthreads (internal to libdbus)</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002, 2003, 2006 Red Hat, Inc.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Licensed under the Academic Free License version 2.1</span>
<a name="l00007"></a>00007 <span class="comment"> * </span>
<a name="l00008"></a>00008 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
<a name="l00009"></a>00009 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00010"></a>00010 <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00011"></a>00011 <span class="comment"> * (at your option) any later version.</span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
<a name="l00014"></a>00014 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00015"></a>00015 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00016"></a>00016 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00017"></a>00017 <span class="comment"> * </span>
<a name="l00018"></a>00018 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00019"></a>00019 <span class="comment"> * along with this program; if not, write to the Free Software</span>
<a name="l00020"></a>00020 <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00021"></a>00021 <span class="comment"> *</span>
<a name="l00022"></a>00022 <span class="comment"> */</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include "dbus-internals.h"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "dbus-sysdeps.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "dbus-threads.h"</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include <sys/time.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <pthread.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <string.h></span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="preprocessor">#ifdef HAVE_ERRNO_H</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#include <errno.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#endif</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span>
<a name="l00036"></a><a class="code" href="structDBusMutexPThread.html">00036</a> <span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00037"></a><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">00037</a> pthread_mutex_t lock;
<a name="l00038"></a><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">00038</a> <span class="keyword">volatile</span> <span class="keywordtype">int</span> count;
<a name="l00039"></a><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">00039</a> <span class="keyword">volatile</span> pthread_t holder;
<a name="l00043"></a>00043 } <a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a>;
<a name="l00044"></a>00044
<a name="l00045"></a><a class="code" href="structDBusCondVarPThread.html">00045</a> <span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00046"></a><a class="code" href="structDBusCondVarPThread.html#91323dd9c3a82e69fbabb3dd0f2fc96a">00046</a> pthread_cond_t cond;
<a name="l00047"></a>00047 } <a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a>;
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="preprocessor">#define DBUS_MUTEX(m) ((DBusMutex*) m)</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span><span class="preprocessor">#define DBUS_MUTEX_PTHREAD(m) ((DBusMutexPThread*) m)</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span>
<a name="l00052"></a>00052 <span class="preprocessor">#define DBUS_COND_VAR(c) ((DBusCondVar*) c)</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor">#define DBUS_COND_VAR_PTHREAD(c) ((DBusCondVarPThread*) c)</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span>
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="preprocessor">#ifdef DBUS_DISABLE_ASSERT</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="comment">/* (tmp != 0) is a no-op usage to silence compiler */</span>
<a name="l00058"></a>00058 <span class="preprocessor">#define PTHREAD_CHECK(func_name, result_or_call) \</span>
<a name="l00059"></a>00059 <span class="preprocessor"> do { int tmp = (result_or_call); if (tmp != 0) {;} } while (0)</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span><span class="preprocessor">#define PTHREAD_CHECK(func_name, result_or_call) do { \</span>
<a name="l00062"></a>00062 <span class="preprocessor"> int tmp = (result_or_call); \</span>
<a name="l00063"></a>00063 <span class="preprocessor"> if (tmp != 0) { \</span>
<a name="l00064"></a>00064 <span class="preprocessor"> _dbus_warn_check_failed ("pthread function %s failed with %d %s in %s\n", \</span>
<a name="l00065"></a>00065 <span class="preprocessor"> func_name, tmp, strerror(tmp), _DBUS_FUNCTION_NAME); \</span>
<a name="l00066"></a>00066 <span class="preprocessor"> } \</span>
<a name="l00067"></a>00067 <span class="preprocessor">} while (0)</span>
<a name="l00068"></a>00068 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* !DBUS_DISABLE_ASSERT */</span>
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keyword">static</span> <a class="code" href="group__DBusThreads.html#g4eb021cd6cd0830423eac2738e0ddc40">DBusMutex</a>*
<a name="l00071"></a>00071 _dbus_pthread_mutex_new (<span class="keywordtype">void</span>)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a> *pmutex;
<a name="l00074"></a>00074 <span class="keywordtype">int</span> result;
<a name="l00075"></a>00075
<a name="l00076"></a>00076 pmutex = <a class="code" href="group__DBusMemory.html#g54ccb556e7964112a825a7f46c156ca0">dbus_new</a> (<a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a>, 1);
<a name="l00077"></a>00077 <span class="keywordflow">if</span> (pmutex == <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00078"></a>00078 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00079"></a>00079
<a name="l00080"></a>00080 result = pthread_mutex_init (&pmutex-><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">lock</a>, <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordflow">if</span> (result == ENOMEM || result == EAGAIN)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (pmutex);
<a name="l00085"></a>00085 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087 <span class="keywordflow">else</span>
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 PTHREAD_CHECK (<span class="stringliteral">"pthread_mutex_init"</span>, result);
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="comment">/* Only written */</span>
<a name="l00093"></a>00093 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> = 0;
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="comment">/* There's no portable way to have a "null" pthread afaik so we</span>
<a name="l00096"></a>00096 <span class="comment"> * can't set pmutex->holder to anything sensible. We only access it</span>
<a name="l00097"></a>00097 <span class="comment"> * once the lock is held (which means we've set it).</span>
<a name="l00098"></a>00098 <span class="comment"> */</span>
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">return</span> DBUS_MUTEX (pmutex);
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00104"></a>00104 _dbus_pthread_mutex_free (<a class="code" href="group__DBusThreads.html#g4eb021cd6cd0830423eac2738e0ddc40">DBusMutex</a> *mutex)
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106 <a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a> *pmutex = DBUS_MUTEX_PTHREAD (mutex);
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> == 0);
<a name="l00109"></a>00109
<a name="l00110"></a>00110 PTHREAD_CHECK (<span class="stringliteral">"pthread_mutex_destroy"</span>, pthread_mutex_destroy (&pmutex-><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">lock</a>));
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (pmutex);
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00116"></a>00116 _dbus_pthread_mutex_lock (<a class="code" href="group__DBusThreads.html#g4eb021cd6cd0830423eac2738e0ddc40">DBusMutex</a> *mutex)
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 <a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a> *pmutex = DBUS_MUTEX_PTHREAD (mutex);
<a name="l00119"></a>00119 pthread_t <span class="keyword">self</span> = pthread_self ();
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">/* If the count is > 0 then someone had the lock, maybe us. If it is</span>
<a name="l00122"></a>00122 <span class="comment"> * 0, then it might immediately change right after we read it,</span>
<a name="l00123"></a>00123 <span class="comment"> * but it will be changed by another thread; i.e. if we read 0,</span>
<a name="l00124"></a>00124 <span class="comment"> * we assume that this thread doesn't have the lock.</span>
<a name="l00125"></a>00125 <span class="comment"> *</span>
<a name="l00126"></a>00126 <span class="comment"> * Not 100% sure this is safe, but ... seems like it should be.</span>
<a name="l00127"></a>00127 <span class="comment"> */</span>
<a name="l00128"></a>00128 <span class="keywordflow">if</span> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> == 0)
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 <span class="comment">/* We know we don't have the lock; someone may have the lock. */</span>
<a name="l00131"></a>00131
<a name="l00132"></a>00132 PTHREAD_CHECK (<span class="stringliteral">"pthread_mutex_lock"</span>, pthread_mutex_lock (&pmutex-><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">lock</a>));
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="comment">/* We now have the lock. Count must be 0 since it must be 0 when</span>
<a name="l00135"></a>00135 <span class="comment"> * the lock is released by another thread, and we just now got</span>
<a name="l00136"></a>00136 <span class="comment"> * the lock.</span>
<a name="l00137"></a>00137 <span class="comment"> */</span>
<a name="l00138"></a>00138 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> == 0);
<a name="l00139"></a>00139
<a name="l00140"></a>00140 pmutex-><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">holder</a> = <span class="keyword">self</span>;
<a name="l00141"></a>00141 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> = 1;
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143 <span class="keywordflow">else</span>
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145 <span class="comment">/* We know someone had the lock, possibly us. Thus</span>
<a name="l00146"></a>00146 <span class="comment"> * pmutex->holder is not pointing to junk, though it may not be</span>
<a name="l00147"></a>00147 <span class="comment"> * the lock holder anymore if the lock holder is not us. If the</span>
<a name="l00148"></a>00148 <span class="comment"> * lock holder is us, then we definitely have the lock.</span>
<a name="l00149"></a>00149 <span class="comment"> */</span>
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (pthread_equal (pmutex-><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">holder</a>, <span class="keyword">self</span>))
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <span class="comment">/* We already have the lock. */</span>
<a name="l00154"></a>00154 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> > 0);
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156 <span class="keywordflow">else</span>
<a name="l00157"></a>00157 {
<a name="l00158"></a>00158 <span class="comment">/* Wait for the lock */</span>
<a name="l00159"></a>00159 PTHREAD_CHECK (<span class="stringliteral">"pthread_mutex_lock"</span>, pthread_mutex_lock (&pmutex-><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">lock</a>));
<a name="l00160"></a>00160 pmutex-><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">holder</a> = <span class="keyword">self</span>;
<a name="l00161"></a>00161 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> == 0);
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163
<a name="l00164"></a>00164 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> += 1;
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00169"></a>00169 _dbus_pthread_mutex_unlock (<a class="code" href="group__DBusThreads.html#g4eb021cd6cd0830423eac2738e0ddc40">DBusMutex</a> *mutex)
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a> *pmutex = DBUS_MUTEX_PTHREAD (mutex);
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> > 0);
<a name="l00174"></a>00174
<a name="l00175"></a>00175 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> -= 1;
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="keywordflow">if</span> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> == 0)
<a name="l00178"></a>00178 PTHREAD_CHECK (<span class="stringliteral">"pthread_mutex_unlock"</span>, pthread_mutex_unlock (&pmutex-><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">lock</a>));
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="comment">/* We leave pmutex->holder set to ourselves, its content is undefined if count is 0 */</span>
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="keyword">static</span> <a class="code" href="group__DBusThreads.html#ga14cd16a336a85b5edbca3c237c3829e">DBusCondVar</a> *
<a name="l00184"></a>00184 _dbus_pthread_condvar_new (<span class="keywordtype">void</span>)
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 <a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a> *pcond;
<a name="l00187"></a>00187 <span class="keywordtype">int</span> result;
<a name="l00188"></a>00188
<a name="l00189"></a>00189 pcond = <a class="code" href="group__DBusMemory.html#g54ccb556e7964112a825a7f46c156ca0">dbus_new</a> (<a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a>, 1);
<a name="l00190"></a>00190 <span class="keywordflow">if</span> (pcond == <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00191"></a>00191 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00192"></a>00192
<a name="l00193"></a>00193 result = pthread_cond_init (&pcond-><a class="code" href="structDBusCondVarPThread.html#91323dd9c3a82e69fbabb3dd0f2fc96a">cond</a>, <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="keywordflow">if</span> (result == EAGAIN || result == ENOMEM)
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (pcond);
<a name="l00198"></a>00198 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 <span class="keywordflow">else</span>
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 PTHREAD_CHECK (<span class="stringliteral">"pthread_cond_init"</span>, result);
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="keywordflow">return</span> DBUS_COND_VAR (pcond);
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00209"></a>00209 _dbus_pthread_condvar_free (<a class="code" href="group__DBusThreads.html#ga14cd16a336a85b5edbca3c237c3829e">DBusCondVar</a> *cond)
<a name="l00210"></a>00210 {
<a name="l00211"></a>00211 <a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a> *pcond = DBUS_COND_VAR_PTHREAD (cond);
<a name="l00212"></a>00212
<a name="l00213"></a>00213 PTHREAD_CHECK (<span class="stringliteral">"pthread_cond_destroy"</span>, pthread_cond_destroy (&pcond-><a class="code" href="structDBusCondVarPThread.html#91323dd9c3a82e69fbabb3dd0f2fc96a">cond</a>));
<a name="l00214"></a>00214
<a name="l00215"></a>00215 <a class="code" href="group__DBusMemory.html#g488c6b08cc8c1ddf0203243c4b27a13c">dbus_free</a> (pcond);
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00219"></a>00219 _dbus_pthread_condvar_wait (<a class="code" href="group__DBusThreads.html#ga14cd16a336a85b5edbca3c237c3829e">DBusCondVar</a> *cond,
<a name="l00220"></a>00220 <a class="code" href="group__DBusThreads.html#g4eb021cd6cd0830423eac2738e0ddc40">DBusMutex</a> *mutex)
<a name="l00221"></a>00221 {
<a name="l00222"></a>00222 <a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a> *pmutex = DBUS_MUTEX_PTHREAD (mutex);
<a name="l00223"></a>00223 <a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a> *pcond = DBUS_COND_VAR_PTHREAD (cond);
<a name="l00224"></a>00224 <span class="keywordtype">int</span> old_count;
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> > 0);
<a name="l00227"></a>00227 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pthread_equal (pmutex-><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">holder</a>, pthread_self ()));
<a name="l00228"></a>00228
<a name="l00229"></a>00229 old_count = pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a>;
<a name="l00230"></a>00230 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> = 0; <span class="comment">/* allow other threads to lock */</span>
<a name="l00231"></a>00231 PTHREAD_CHECK (<span class="stringliteral">"pthread_cond_wait"</span>, pthread_cond_wait (&pcond-><a class="code" href="structDBusCondVarPThread.html#91323dd9c3a82e69fbabb3dd0f2fc96a">cond</a>, &pmutex-><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">lock</a>));
<a name="l00232"></a>00232 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> == 0);
<a name="l00233"></a>00233 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> = old_count;
<a name="l00234"></a>00234 pmutex-><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">holder</a> = pthread_self(); <span class="comment">/* other threads may have locked the mutex in the meantime */</span>
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236
<a name="l00237"></a>00237 <span class="keyword">static</span> <a class="code" href="group__DBusTypes.html#g39c9cb0f3a2a8ad6f55cc4855d035349">dbus_bool_t</a>
<a name="l00238"></a>00238 _dbus_pthread_condvar_wait_timeout (<a class="code" href="group__DBusThreads.html#ga14cd16a336a85b5edbca3c237c3829e">DBusCondVar</a> *cond,
<a name="l00239"></a>00239 <a class="code" href="group__DBusThreads.html#g4eb021cd6cd0830423eac2738e0ddc40">DBusMutex</a> *mutex,
<a name="l00240"></a>00240 <span class="keywordtype">int</span> timeout_milliseconds)
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 <a class="code" href="structDBusMutexPThread.html">DBusMutexPThread</a> *pmutex = DBUS_MUTEX_PTHREAD (mutex);
<a name="l00243"></a>00243 <a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a> *pcond = DBUS_COND_VAR_PTHREAD (cond);
<a name="l00244"></a>00244 <span class="keyword">struct </span>timeval time_now;
<a name="l00245"></a>00245 <span class="keyword">struct </span>timespec end_time;
<a name="l00246"></a>00246 <span class="keywordtype">int</span> result;
<a name="l00247"></a>00247 <span class="keywordtype">int</span> old_count;
<a name="l00248"></a>00248
<a name="l00249"></a>00249 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> > 0);
<a name="l00250"></a>00250 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pthread_equal (pmutex-><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">holder</a>, pthread_self ()));
<a name="l00251"></a>00251
<a name="l00252"></a>00252 gettimeofday (&time_now, <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);
<a name="l00253"></a>00253
<a name="l00254"></a>00254 end_time.tv_sec = time_now.tv_sec + timeout_milliseconds / 1000;
<a name="l00255"></a>00255 end_time.tv_nsec = (time_now.tv_usec + (timeout_milliseconds % 1000) * 1000) * 1000;
<a name="l00256"></a>00256 <span class="keywordflow">if</span> (end_time.tv_nsec > 1000*1000*1000)
<a name="l00257"></a>00257 {
<a name="l00258"></a>00258 end_time.tv_sec += 1;
<a name="l00259"></a>00259 end_time.tv_nsec -= 1000*1000*1000;
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261
<a name="l00262"></a>00262 old_count = pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a>;
<a name="l00263"></a>00263 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> = 0;
<a name="l00264"></a>00264 result = pthread_cond_timedwait (&pcond-><a class="code" href="structDBusCondVarPThread.html#91323dd9c3a82e69fbabb3dd0f2fc96a">cond</a>, &pmutex-><a class="code" href="structDBusMutexPThread.html#d097a06cc5cb97e56e85ea425621a328">lock</a>, &end_time);
<a name="l00265"></a>00265
<a name="l00266"></a>00266 <span class="keywordflow">if</span> (result != ETIMEDOUT)
<a name="l00267"></a>00267 {
<a name="l00268"></a>00268 PTHREAD_CHECK (<span class="stringliteral">"pthread_cond_timedwait"</span>, result);
<a name="l00269"></a>00269 }
<a name="l00270"></a>00270
<a name="l00271"></a>00271 <a class="code" href="group__DBusInternalsUtils.html#g129c6c03f011cdc171934d5d386cc797">_dbus_assert</a> (pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> == 0);
<a name="l00272"></a>00272 pmutex-><a class="code" href="structDBusMutexPThread.html#c53a4fdd03e2e3aaee31816f956cfe07">count</a> = old_count;
<a name="l00273"></a>00273 pmutex-><a class="code" href="structDBusMutexPThread.html#f8ac6434d7f058be9beb73fc4a8bef47">holder</a> = pthread_self(); <span class="comment">/* other threads may have locked the mutex in the meantime */</span>
<a name="l00274"></a>00274
<a name="l00275"></a>00275 <span class="comment">/* return true if we did not time out */</span>
<a name="l00276"></a>00276 <span class="keywordflow">return</span> result != ETIMEDOUT;
<a name="l00277"></a>00277 }
<a name="l00278"></a>00278
<a name="l00279"></a>00279 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00280"></a>00280 _dbus_pthread_condvar_wake_one (<a class="code" href="group__DBusThreads.html#ga14cd16a336a85b5edbca3c237c3829e">DBusCondVar</a> *cond)
<a name="l00281"></a>00281 {
<a name="l00282"></a>00282 <a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a> *pcond = DBUS_COND_VAR_PTHREAD (cond);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 PTHREAD_CHECK (<span class="stringliteral">"pthread_cond_signal"</span>, pthread_cond_signal (&pcond-><a class="code" href="structDBusCondVarPThread.html#91323dd9c3a82e69fbabb3dd0f2fc96a">cond</a>));
<a name="l00285"></a>00285 }
<a name="l00286"></a>00286
<a name="l00287"></a>00287 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00288"></a>00288 _dbus_pthread_condvar_wake_all (<a class="code" href="group__DBusThreads.html#ga14cd16a336a85b5edbca3c237c3829e">DBusCondVar</a> *cond)
<a name="l00289"></a>00289 {
<a name="l00290"></a>00290 <a class="code" href="structDBusCondVarPThread.html">DBusCondVarPThread</a> *pcond = DBUS_COND_VAR_PTHREAD (cond);
<a name="l00291"></a>00291
<a name="l00292"></a>00292 PTHREAD_CHECK (<span class="stringliteral">"pthread_cond_broadcast"</span>, pthread_cond_broadcast (&pcond-><a class="code" href="structDBusCondVarPThread.html#91323dd9c3a82e69fbabb3dd0f2fc96a">cond</a>));
<a name="l00293"></a>00293 }
<a name="l00294"></a>00294
<a name="l00295"></a>00295 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="structDBusThreadFunctions.html">DBusThreadFunctions</a> pthread_functions =
<a name="l00296"></a>00296 {
<a name="l00297"></a>00297 DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_NEW_MASK |
<a name="l00298"></a>00298 DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_FREE_MASK |
<a name="l00299"></a>00299 DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_LOCK_MASK |
<a name="l00300"></a>00300 DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_UNLOCK_MASK |
<a name="l00301"></a>00301 DBUS_THREAD_FUNCTIONS_CONDVAR_NEW_MASK |
<a name="l00302"></a>00302 DBUS_THREAD_FUNCTIONS_CONDVAR_FREE_MASK |
<a name="l00303"></a>00303 DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_MASK |
<a name="l00304"></a>00304 DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_TIMEOUT_MASK |
<a name="l00305"></a>00305 DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ONE_MASK|
<a name="l00306"></a>00306 DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ALL_MASK,
<a name="l00307"></a>00307 <a class="code" href="group__DBusMacros.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, NULL, NULL, NULL,
<a name="l00308"></a>00308 _dbus_pthread_condvar_new,
<a name="l00309"></a>00309 _dbus_pthread_condvar_free,
<a name="l00310"></a>00310 _dbus_pthread_condvar_wait,
<a name="l00311"></a>00311 _dbus_pthread_condvar_wait_timeout,
<a name="l00312"></a>00312 _dbus_pthread_condvar_wake_one,
<a name="l00313"></a>00313 _dbus_pthread_condvar_wake_all,
<a name="l00314"></a>00314 _dbus_pthread_mutex_new,
<a name="l00315"></a>00315 _dbus_pthread_mutex_free,
<a name="l00316"></a>00316 _dbus_pthread_mutex_lock,
<a name="l00317"></a>00317 _dbus_pthread_mutex_unlock
<a name="l00318"></a>00318 };
<a name="l00319"></a>00319
<a name="l00320"></a>00320 <a class="code" href="group__DBusTypes.html#g39c9cb0f3a2a8ad6f55cc4855d035349">dbus_bool_t</a>
<a name="l00321"></a><a class="code" href="group__DBusSysdeps.html#ge7be34dbffb6458578e86c59a26d4fad">00321</a> <a class="code" href="group__DBusSysdeps.html#ge7be34dbffb6458578e86c59a26d4fad">_dbus_threads_init_platform_specific</a> (<span class="keywordtype">void</span>)
<a name="l00322"></a>00322 {
<a name="l00323"></a>00323 <span class="keywordflow">return</span> <a class="code" href="group__DBusThreads.html#ga9a4ed445c77af3afa0dbdbb9d85afd4">dbus_threads_init</a> (&pthread_functions);
<a name="l00324"></a>00324 }
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