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<div class="title">qpid/sys/posix/Mutex.h</div> </div>
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<a href="a00541.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef _sys_posix_Mutex_h</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define _sys_posix_Mutex_h</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="comment">/*</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Copyright (c) 2006 The Apache Software Foundation</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00009"></a>00009 <span class="comment"> * you may not use this file except in compliance with the License.</span>
<a name="l00010"></a>00010 <span class="comment"> * You may obtain a copy of the License at</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span>
<a name="l00015"></a>00015 <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00016"></a>00016 <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00017"></a>00017 <span class="comment"> * See the License for the specific language governing permissions and</span>
<a name="l00018"></a>00018 <span class="comment"> * limitations under the License.</span>
<a name="l00019"></a>00019 <span class="comment"> *</span>
<a name="l00020"></a>00020 <span class="comment"> */</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="a00559.html">qpid/sys/posix/check.h</a>"</span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="preprocessor">#include <pthread.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <boost/noncopyable.hpp></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keyword">namespace </span>qpid {
<a name="l00028"></a>00028 <span class="keyword">namespace </span>sys {
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="keyword">class </span>Condition;
<a name="l00031"></a>00031
<a name="l00035"></a>00035 <span class="keyword">class </span>Mutex : <span class="keyword">private</span> boost::noncopyable {
<a name="l00036"></a><a class="code" href="a00220.html#ab6d907c41d48048e1eb203e15f2fc9a8">00036</a> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a00056.html" title="A condition variable for thread synchronization.">Condition</a>;
<a name="l00037"></a>00037 <span class="keyword">static</span> <span class="keyword">const</span> pthread_mutexattr_t* getAttribute();
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keyword">public</span>:
<a name="l00040"></a><a class="code" href="a00220.html#a173572e73b28c52e4b0841634a8f75b9">00040</a> <span class="keyword">typedef</span> <a class="code" href="a00312.html" title="Scoped lock template: calls lock() in ctor, unlock() in dtor.">::qpid::sys::ScopedLock<Mutex></a> <a class="code" href="a00220.html#a173572e73b28c52e4b0841634a8f75b9">ScopedLock</a>;
<a name="l00041"></a><a class="code" href="a00220.html#a01fdb72e06ec6cd4b2d02258fbe19470">00041</a> <span class="keyword">typedef</span> <a class="code" href="a00315.html">::qpid::sys::ScopedUnlock<Mutex></a> <a class="code" href="a00220.html#a01fdb72e06ec6cd4b2d02258fbe19470">ScopedUnlock</a>;
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">inline</span> <a class="code" href="a00220.html#a0b765f0ddd4a743cc62bfbe706c0e24e">Mutex</a>();
<a name="l00044"></a>00044 <span class="keyword">inline</span> <a class="code" href="a00220.html#afb48c9bf070468afd6290baf4bed3f06">~Mutex</a>();
<a name="l00045"></a>00045 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00220.html#a915aa25a7544637b727f256af589d9b6">lock</a>();
<a name="l00046"></a>00046 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00220.html#aab850ae6eb425b1c40e307d4a4fe4eca">unlock</a>();
<a name="l00047"></a>00047 <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="a00220.html#af0ff34c2c5b755c232817874818948d5">trylock</a>();
<a name="l00048"></a>00048
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="keyword">protected</span>:
<a name="l00051"></a><a class="code" href="a00220.html#afa07a7a4341670aadc1e887a53153d24">00051</a> pthread_mutex_t <a class="code" href="a00220.html#afa07a7a4341670aadc1e887a53153d24">mutex</a>;
<a name="l00052"></a>00052 };
<a name="l00053"></a>00053
<a name="l00057"></a>00057 <span class="keyword">class </span><a class="code" href="a00295.html" title="RW lock.">RWlock</a> : <span class="keyword">private</span> boost::noncopyable {
<a name="l00058"></a><a class="code" href="a00295.html#ab6d907c41d48048e1eb203e15f2fc9a8">00058</a> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="a00056.html" title="A condition variable for thread synchronization.">Condition</a>;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keyword">public</span>:
<a name="l00061"></a><a class="code" href="a00295.html#a07b2376ee17fef2d8cf50606805d1d38">00061</a> <span class="keyword">typedef</span> <a class="code" href="a00314.html">::qpid::sys::ScopedRlock<RWlock></a> <a class="code" href="a00295.html#a07b2376ee17fef2d8cf50606805d1d38">ScopedRlock</a>;
<a name="l00062"></a><a class="code" href="a00295.html#aecbfbba3d6eb73f00bb30bef34556124">00062</a> <span class="keyword">typedef</span> <a class="code" href="a00317.html">::qpid::sys::ScopedWlock<RWlock></a> <a class="code" href="a00295.html#aecbfbba3d6eb73f00bb30bef34556124">ScopedWlock</a>;
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="keyword">inline</span> <a class="code" href="a00295.html#aa6fa88fc8debe5d24e1710938ab53ad7">RWlock</a>();
<a name="l00065"></a>00065 <span class="keyword">inline</span> <a class="code" href="a00295.html#af3b5d29ea15322a291588c4ec9b86307">~RWlock</a>();
<a name="l00066"></a>00066 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00295.html#ae6a0e0f9bd8fb353d8ae269beb184b8b">wlock</a>(); <span class="comment">// will write-lock</span>
<a name="l00067"></a>00067 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00295.html#abf8700d293ecaecbab313f56e91fac13">rlock</a>(); <span class="comment">// will read-lock</span>
<a name="l00068"></a>00068 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00295.html#aac75a58d42e0c9c37a9f9767c1e36d4a">unlock</a>();
<a name="l00069"></a>00069 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00295.html#a866ce893519e2bd330976d582f8a60f8">trywlock</a>(); <span class="comment">// will write-try</span>
<a name="l00070"></a>00070 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00295.html#a2f7b1f6ff9bdef23f99112912b9152a6">tryrlock</a>(); <span class="comment">// will read-try</span>
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keyword">protected</span>:
<a name="l00073"></a><a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">00073</a> pthread_rwlock_t <a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>;
<a name="l00074"></a>00074 };
<a name="l00075"></a>00075
<a name="l00076"></a>00076
<a name="l00081"></a>00081 <span class="keyword">struct </span><a class="code" href="a00251.html" title="PODMutex is a POD, can be static-initialized with PODMutex m = QPID_PODMUTEX_INITIALIZER.">PODMutex</a>
<a name="l00082"></a>00082 {
<a name="l00083"></a><a class="code" href="a00251.html#a436946942ad64d8ea6fd0feb029d536c">00083</a> <span class="keyword">typedef</span> <a class="code" href="a00312.html" title="Scoped lock template: calls lock() in ctor, unlock() in dtor.">::qpid::sys::ScopedLock<PODMutex></a> <a class="code" href="a00251.html#a436946942ad64d8ea6fd0feb029d536c">ScopedLock</a>;
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00251.html#a6857ea472fb260d636c87bc9391cf32d">lock</a>();
<a name="l00086"></a>00086 <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="a00251.html#a411fd8bd5d5fb84ac7bbfe4a05727980">unlock</a>();
<a name="l00087"></a>00087 <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="a00251.html#afea652d1a3e343d5f6915b98d2f123d0">trylock</a>();
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="comment">// Must be public to be a POD:</span>
<a name="l00090"></a><a class="code" href="a00251.html#a150d30fb56b5ea06f90f14f05dfd4aa5">00090</a> pthread_mutex_t <a class="code" href="a00251.html#a150d30fb56b5ea06f90f14f05dfd4aa5">mutex</a>;
<a name="l00091"></a>00091 };
<a name="l00092"></a>00092
<a name="l00093"></a><a class="code" href="a00541.html#a3e841ff24a5edd2e46ea476ac90ddaba">00093</a> <span class="preprocessor">#define QPID_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER }</span>
<a name="l00094"></a>00094 <span class="preprocessor"></span>
<a name="l00095"></a><a class="code" href="a00251.html#a6857ea472fb260d636c87bc9391cf32d">00095</a> <span class="keywordtype">void</span> <a class="code" href="a00251.html#a6857ea472fb260d636c87bc9391cf32d">PODMutex::lock</a>() {
<a name="l00096"></a>00096 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_mutex_lock(&<a class="code" href="a00251.html#a150d30fb56b5ea06f90f14f05dfd4aa5">mutex</a>));
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a><a class="code" href="a00251.html#a411fd8bd5d5fb84ac7bbfe4a05727980">00099</a> <span class="keywordtype">void</span> <a class="code" href="a00251.html#a411fd8bd5d5fb84ac7bbfe4a05727980">PODMutex::unlock</a>() {
<a name="l00100"></a>00100 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_mutex_unlock(&<a class="code" href="a00251.html#a150d30fb56b5ea06f90f14f05dfd4aa5">mutex</a>));
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102
<a name="l00103"></a><a class="code" href="a00251.html#afea652d1a3e343d5f6915b98d2f123d0">00103</a> <span class="keywordtype">bool</span> <a class="code" href="a00251.html#afea652d1a3e343d5f6915b98d2f123d0">PODMutex::trylock</a>() {
<a name="l00104"></a>00104 <span class="keywordflow">return</span> pthread_mutex_trylock(&<a class="code" href="a00251.html#a150d30fb56b5ea06f90f14f05dfd4aa5">mutex</a>) == 0;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a><a class="code" href="a00220.html#a0b765f0ddd4a743cc62bfbe706c0e24e">00107</a> <a class="code" href="a00220.html#a0b765f0ddd4a743cc62bfbe706c0e24e">Mutex::Mutex</a>() {
<a name="l00108"></a>00108 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_mutex_init(&<a class="code" href="a00220.html#afa07a7a4341670aadc1e887a53153d24">mutex</a>, getAttribute()));
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110
<a name="l00111"></a><a class="code" href="a00220.html#afb48c9bf070468afd6290baf4bed3f06">00111</a> <a class="code" href="a00220.html#afb48c9bf070468afd6290baf4bed3f06">Mutex::~Mutex</a>(){
<a name="l00112"></a>00112 <a class="code" href="a00559.html#ac288618eb63f4455fbd6b6931a1a31b2">QPID_POSIX_ABORT_IF</a>(pthread_mutex_destroy(&<a class="code" href="a00220.html#afa07a7a4341670aadc1e887a53153d24">mutex</a>));
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a><a class="code" href="a00220.html#a915aa25a7544637b727f256af589d9b6">00115</a> <span class="keywordtype">void</span> <a class="code" href="a00220.html#a915aa25a7544637b727f256af589d9b6">Mutex::lock</a>() {
<a name="l00116"></a>00116 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_mutex_lock(&<a class="code" href="a00220.html#afa07a7a4341670aadc1e887a53153d24">mutex</a>));
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118
<a name="l00119"></a><a class="code" href="a00220.html#aab850ae6eb425b1c40e307d4a4fe4eca">00119</a> <span class="keywordtype">void</span> <a class="code" href="a00220.html#aab850ae6eb425b1c40e307d4a4fe4eca">Mutex::unlock</a>() {
<a name="l00120"></a>00120 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_mutex_unlock(&<a class="code" href="a00220.html#afa07a7a4341670aadc1e887a53153d24">mutex</a>));
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a><a class="code" href="a00220.html#af0ff34c2c5b755c232817874818948d5">00123</a> <span class="keywordtype">bool</span> <a class="code" href="a00220.html#af0ff34c2c5b755c232817874818948d5">Mutex::trylock</a>() {
<a name="l00124"></a>00124 <span class="keywordflow">return</span> pthread_mutex_trylock(&<a class="code" href="a00220.html#afa07a7a4341670aadc1e887a53153d24">mutex</a>) == 0;
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126
<a name="l00127"></a>00127
<a name="l00128"></a><a class="code" href="a00295.html#aa6fa88fc8debe5d24e1710938ab53ad7">00128</a> <a class="code" href="a00295.html#aa6fa88fc8debe5d24e1710938ab53ad7">RWlock::RWlock</a>() {
<a name="l00129"></a>00129 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_rwlock_init(&<a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>, NULL));
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a><a class="code" href="a00295.html#af3b5d29ea15322a291588c4ec9b86307">00132</a> <a class="code" href="a00295.html#af3b5d29ea15322a291588c4ec9b86307">RWlock::~RWlock</a>(){
<a name="l00133"></a>00133 <a class="code" href="a00559.html#ac288618eb63f4455fbd6b6931a1a31b2">QPID_POSIX_ABORT_IF</a>(pthread_rwlock_destroy(&<a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>));
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135
<a name="l00136"></a><a class="code" href="a00295.html#ae6a0e0f9bd8fb353d8ae269beb184b8b">00136</a> <span class="keywordtype">void</span> <a class="code" href="a00295.html#ae6a0e0f9bd8fb353d8ae269beb184b8b">RWlock::wlock</a>() {
<a name="l00137"></a>00137 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_rwlock_wrlock(&<a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>));
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a><a class="code" href="a00295.html#abf8700d293ecaecbab313f56e91fac13">00140</a> <span class="keywordtype">void</span> <a class="code" href="a00295.html#abf8700d293ecaecbab313f56e91fac13">RWlock::rlock</a>() {
<a name="l00141"></a>00141 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_rwlock_rdlock(&<a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>));
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a><a class="code" href="a00295.html#aac75a58d42e0c9c37a9f9767c1e36d4a">00144</a> <span class="keywordtype">void</span> <a class="code" href="a00295.html#aac75a58d42e0c9c37a9f9767c1e36d4a">RWlock::unlock</a>() {
<a name="l00145"></a>00145 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_rwlock_unlock(&<a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>));
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a><a class="code" href="a00295.html#a866ce893519e2bd330976d582f8a60f8">00148</a> <span class="keywordtype">void</span> <a class="code" href="a00295.html#a866ce893519e2bd330976d582f8a60f8">RWlock::trywlock</a>() {
<a name="l00149"></a>00149 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_rwlock_trywrlock(&<a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>));
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151
<a name="l00152"></a><a class="code" href="a00295.html#a2f7b1f6ff9bdef23f99112912b9152a6">00152</a> <span class="keywordtype">void</span> <a class="code" href="a00295.html#a2f7b1f6ff9bdef23f99112912b9152a6">RWlock::tryrlock</a>() {
<a name="l00153"></a>00153 <a class="code" href="a00559.html#a5385ea16e751a4fc1d19bb8df9c8067e" title="Same as _THROW_IF in a release build, but abort a debug build.">QPID_POSIX_ASSERT_THROW_IF</a>(pthread_rwlock_tryrdlock(&<a class="code" href="a00295.html#a9d71190070867420bcd5d98c58b5c4f6">rwlock</a>));
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155
<a name="l00156"></a>00156
<a name="l00157"></a>00157 }}
<a name="l00158"></a>00158 <span class="preprocessor">#endif </span>
</pre></div></div>
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