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<h1>JackWinSemaphore.cpp</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (C) 2004-2008 Grame</span>
<a name="l00003"></a>00003 <span class="comment"> </span>
<a name="l00004"></a>00004 <span class="comment"> This program is free software; you can redistribute it and/or modify</span>
<a name="l00005"></a>00005 <span class="comment"> it under the terms of the GNU Lesser General Public License as published by</span>
<a name="l00006"></a>00006 <span class="comment"> the Free Software Foundation; either version 2.1 of the License, or</span>
<a name="l00007"></a>00007 <span class="comment"> (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"> </span>
<a name="l00009"></a>00009 <span class="comment"> This program is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00012"></a>00012 <span class="comment"> GNU Lesser General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"> </span>
<a name="l00014"></a>00014 <span class="comment"> You should have received a copy of the GNU Lesser General Public License</span>
<a name="l00015"></a>00015 <span class="comment"> along with this program; if not, write to the Free Software</span>
<a name="l00016"></a>00016 <span class="comment"> Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</span>
<a name="l00017"></a>00017 <span class="comment"> </span>
<a name="l00018"></a>00018 <span class="comment"> */</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include "JackWinSemaphore.h"</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include "JackConstants.h"</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include "JackTools.h"</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "JackError.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <stdio.h></span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="keyword">namespace </span>Jack
<a name="l00027"></a>00027 {
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="keywordtype">void</span> JackWinSemaphore::BuildName(<span class="keyword">const</span> <span class="keywordtype">char</span>* client_name, <span class="keyword">const</span> <span class="keywordtype">char</span>* server_name, <span class="keywordtype">char</span>* res)
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="keywordtype">char</span> ext_client_name[JACK_CLIENT_NAME_SIZE + 1];
<a name="l00032"></a>00032 JackTools::RewriteName(client_name, ext_client_name);
<a name="l00033"></a>00033 sprintf(res, <span class="stringliteral">"jack_pipe.%s_%s"</span>, server_name, ext_client_name);
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="keywordtype">bool</span> JackWinSemaphore::Signal()
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 BOOL res;
<a name="l00039"></a>00039 assert(fSemaphore);
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="keywordflow">if</span> (fFlush)
<a name="l00042"></a>00042 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="keywordflow">if</span> (!(res = ReleaseSemaphore(fSemaphore, 1, NULL))) {
<a name="l00045"></a>00045 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"JackWinSemaphore::Signal name = %s err = %ld"</span>, fName, GetLastError());
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keywordflow">return</span> res;
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keywordtype">bool</span> JackWinSemaphore::SignalAll()
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 BOOL res;
<a name="l00054"></a>00054 assert(fSemaphore);
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="keywordflow">if</span> (fFlush)
<a name="l00057"></a>00057 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="keywordflow">if</span> (!(res = ReleaseSemaphore(fSemaphore, 1, NULL))) {
<a name="l00060"></a>00060 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"JackWinSemaphore::SignalAll name = %s err = %ld"</span>, fName, GetLastError());
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="keywordflow">return</span> res;
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="keywordtype">bool</span> JackWinSemaphore::Wait()
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 DWORD res;
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordflow">if</span> ((res = WaitForSingleObject(fSemaphore, INFINITE)) == WAIT_TIMEOUT) {
<a name="l00071"></a>00071 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"JackWinSemaphore::TimedWait name = %s time_out"</span>, fName);
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keywordflow">return</span> (res == WAIT_OBJECT_0);
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="keywordtype">bool</span> JackWinSemaphore::TimedWait(<span class="keywordtype">long</span> usec)
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 DWORD res;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordflow">if</span> ((res = WaitForSingleObject(fSemaphore, usec / 1000)) == WAIT_TIMEOUT) {
<a name="l00082"></a>00082 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"JackWinSemaphore::TimedWait name = %s time_out"</span>, fName);
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keywordflow">return</span> (res == WAIT_OBJECT_0);
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="comment">// Client side : get the published semaphore from server</span>
<a name="l00089"></a>00089 <span class="keywordtype">bool</span> JackWinSemaphore::ConnectInput(<span class="keyword">const</span> <span class="keywordtype">char</span>* name, <span class="keyword">const</span> <span class="keywordtype">char</span>* server_name)
<a name="l00090"></a>00090 {
<a name="l00091"></a>00091 BuildName(name, server_name, fName);
<a name="l00092"></a>00092 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackWinSemaphore::Connect %s"</span>, fName);
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="comment">// Temporary...</span>
<a name="l00095"></a>00095 <span class="keywordflow">if</span> (fSemaphore) {
<a name="l00096"></a>00096 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"Already connected name = %s"</span>, name);
<a name="l00097"></a>00097 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">if</span> ((fSemaphore = OpenSemaphore(SEMAPHORE_ALL_ACCESS , FALSE, fName)) == NULL) {
<a name="l00101"></a>00101 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"Connect: can't check in named event name = %s err = %ld"</span>, fName, GetLastError());
<a name="l00102"></a>00102 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00103"></a>00103 } <span class="keywordflow">else</span> {
<a name="l00104"></a>00104 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keywordtype">bool</span> JackWinSemaphore::Connect(<span class="keyword">const</span> <span class="keywordtype">char</span>* name, <span class="keyword">const</span> <span class="keywordtype">char</span>* server_name)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <span class="keywordflow">return</span> ConnectInput(name, server_name);
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="keywordtype">bool</span> JackWinSemaphore::ConnectOutput(<span class="keyword">const</span> <span class="keywordtype">char</span>* name, <span class="keyword">const</span> <span class="keywordtype">char</span>* server_name)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 <span class="keywordflow">return</span> ConnectInput(name, server_name);
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="keywordtype">bool</span> JackWinSemaphore::Disconnect()
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120 <span class="keywordflow">if</span> (fSemaphore) {
<a name="l00121"></a>00121 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackWinSemaphore::Disconnect %s"</span>, fName);
<a name="l00122"></a>00122 CloseHandle(fSemaphore);
<a name="l00123"></a>00123 fSemaphore = NULL;
<a name="l00124"></a>00124 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00125"></a>00125 } <span class="keywordflow">else</span> {
<a name="l00126"></a>00126 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keywordtype">bool</span> JackWinSemaphore::Allocate(<span class="keyword">const</span> <span class="keywordtype">char</span>* name, <span class="keyword">const</span> <span class="keywordtype">char</span>* server_name, <span class="keywordtype">int</span> value)
<a name="l00131"></a>00131 {
<a name="l00132"></a>00132 BuildName(name, server_name, fName);
<a name="l00133"></a>00133 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackWinSemaphore::Allocate name = %s val = %ld"</span>, fName, value);
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="keywordflow">if</span> ((fSemaphore = CreateSemaphore(NULL, value, 32767, fName)) == NULL) {
<a name="l00136"></a>00136 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"Allocate: can't check in named semaphore name = %s err = %ld"</span>, fName, GetLastError());
<a name="l00137"></a>00137 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00138"></a>00138 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (GetLastError() == ERROR_ALREADY_EXISTS) {
<a name="l00139"></a>00139 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"Allocate: named semaphore already exist name = %s"</span>, fName);
<a name="l00140"></a>00140 <span class="comment">// Try to open it </span>
<a name="l00141"></a>00141 fSemaphore = OpenSemaphore(SEMAPHORE_ALL_ACCESS, FALSE, fName);
<a name="l00142"></a>00142 <span class="keywordflow">return</span> (fSemaphore != NULL);
<a name="l00143"></a>00143 } <span class="keywordflow">else</span> {
<a name="l00144"></a>00144 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="keywordtype">void</span> JackWinSemaphore::Destroy()
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 <span class="keywordflow">if</span> (fSemaphore != NULL) {
<a name="l00151"></a>00151 <a class="code" href="group__ServerControl.html#ga35f69faaee3bb9b958ed8c9a5f62246c">jack_log</a>(<span class="stringliteral">"JackWinSemaphore::Destroy %s"</span>, fName);
<a name="l00152"></a>00152 CloseHandle(fSemaphore);
<a name="l00153"></a>00153 fSemaphore = NULL;
<a name="l00154"></a>00154 } <span class="keywordflow">else</span> {
<a name="l00155"></a>00155 <a class="code" href="group__ServerControl.html#gac6448626e0b75fc6d9da1ccbdca0355e">jack_error</a>(<span class="stringliteral">"JackWinSemaphore::Destroy synchro == NULL"</span>);
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159
<a name="l00160"></a>00160 } <span class="comment">// end of namespace</span>
<a name="l00161"></a>00161
</pre></div></div>
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