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<h1>src/libsphinxbase/util/mmio.c</h1> </div>
</div>
<div class="contents">
<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/* ====================================================================</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright (c) 2005 Carnegie Mellon University. All rights </span>
<a name="l00004"></a>00004 <span class="comment"> * reserved.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * Redistribution and use in source and binary forms, with or without</span>
<a name="l00007"></a>00007 <span class="comment"> * modification, are permitted provided that the following conditions</span>
<a name="l00008"></a>00008 <span class="comment"> * are met:</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span>
<a name="l00011"></a>00011 <span class="comment"> * notice, this list of conditions and the following disclaimer. </span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span>
<a name="l00014"></a>00014 <span class="comment"> * notice, this list of conditions and the following disclaimer in</span>
<a name="l00015"></a>00015 <span class="comment"> * the documentation and/or other materials provided with the</span>
<a name="l00016"></a>00016 <span class="comment"> * distribution.</span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> * This work was supported in part by funding from the Defense Advanced </span>
<a name="l00019"></a>00019 <span class="comment"> * Research Projects Agency and the National Science Foundation of the </span>
<a name="l00020"></a>00020 <span class="comment"> * United States of America, and the CMU Sphinx Speech Consortium.</span>
<a name="l00021"></a>00021 <span class="comment"> *</span>
<a name="l00022"></a>00022 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND </span>
<a name="l00023"></a>00023 <span class="comment"> * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, </span>
<a name="l00024"></a>00024 <span class="comment"> * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR</span>
<a name="l00025"></a>00025 <span class="comment"> * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY</span>
<a name="l00026"></a>00026 <span class="comment"> * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00027"></a>00027 <span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT </span>
<a name="l00028"></a>00028 <span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, </span>
<a name="l00029"></a>00029 <span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY </span>
<a name="l00030"></a>00030 <span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT </span>
<a name="l00031"></a>00031 <span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE </span>
<a name="l00032"></a>00032 <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00033"></a>00033 <span class="comment"> *</span>
<a name="l00034"></a>00034 <span class="comment"> * ====================================================================</span>
<a name="l00035"></a>00035 <span class="comment"> *</span>
<a name="l00036"></a>00036 <span class="comment"> */</span>
<a name="l00037"></a>00037 <span class="comment">/*********************************************************************</span>
<a name="l00038"></a>00038 <span class="comment"> *</span>
<a name="l00039"></a>00039 <span class="comment"> * File: mmio.c</span>
<a name="l00040"></a>00040 <span class="comment"> * </span>
<a name="l00041"></a>00041 <span class="comment"> * Description: mmap() wrappers for Unix/Windows</span>
<a name="l00042"></a>00042 <span class="comment"> * </span>
<a name="l00043"></a>00043 <span class="comment"> * Author: David Huggins-Daines <dhuggins@cs.cmu.edu></span>
<a name="l00044"></a>00044 <span class="comment"> * </span>
<a name="l00045"></a>00045 <span class="comment"> *********************************************************************/</span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="preprocessor">#include <string.h></span>
<a name="l00048"></a>00048 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="preprocessor">#ifdef GNUWINCE</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor"># include <sys/wcebase.h></span>
<a name="l00052"></a>00052 <span class="preprocessor"># include <sys/wcetypes.h></span>
<a name="l00053"></a>00053 <span class="preprocessor"># include <sys/wcememory.h></span>
<a name="l00054"></a>00054 <span class="preprocessor"># include <sys/wcefile.h></span>
<a name="l00055"></a>00055 <span class="preprocessor">#elif defined(__SYMBIAN32__) </span><span class="comment">/* SYMBIAN32 must be before WIN32 since Symbian SDK defines WIN32 as well */</span>
<a name="l00056"></a>00056 <span class="preprocessor"># include <unistd.h></span>
<a name="l00057"></a>00057 <span class="preprocessor"># include <fcntl.h></span>
<a name="l00058"></a>00058 <span class="preprocessor"># include <sys/stat.h></span>
<a name="l00059"></a>00059 <span class="preprocessor"># include <sys/mman.h></span>
<a name="l00060"></a>00060 <span class="preprocessor">#elif defined(_WIN32)</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span><span class="preprocessor"># include <windows.h></span>
<a name="l00062"></a>00062 <span class="preprocessor">#else</span>
<a name="l00063"></a>00063 <span class="preprocessor"></span><span class="preprocessor"># include <unistd.h></span>
<a name="l00064"></a>00064 <span class="preprocessor"># include <fcntl.h></span>
<a name="l00065"></a>00065 <span class="preprocessor"># include <sys/stat.h></span>
<a name="l00066"></a>00066 <span class="preprocessor"># include <sys/file.h></span>
<a name="l00067"></a>00067 <span class="preprocessor"># include <sys/mman.h></span>
<a name="l00068"></a>00068 <span class="preprocessor">#endif</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span>
<a name="l00070"></a>00070 <span class="preprocessor">#include "sphinxbase/prim_type.h"</span>
<a name="l00071"></a>00071 <span class="preprocessor">#include "sphinxbase/err.h"</span>
<a name="l00072"></a>00072 <span class="preprocessor">#include "sphinxbase/mmio.h"</span>
<a name="l00073"></a>00073 <span class="preprocessor">#include "sphinxbase/ckd_alloc.h"</span>
<a name="l00074"></a>00074
<a name="l00076"></a>00076 <span class="preprocessor">#if defined(_WIN32_WCE) || defined(GNUWINCE)</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span><span class="keyword">struct </span><a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_s</a> {
<a name="l00078"></a>00078 <span class="keywordtype">int</span> dummy;
<a name="l00079"></a>00079 };
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *
<a name="l00082"></a>00082 <a class="code" href="mmio_8h.html#ae3367a51a50a6108178ecfdd6c983c61" title="Memory-map a file for reading.">mmio_file_read</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 HANDLE ffm, fd;
<a name="l00085"></a>00085 WCHAR *wfilename;
<a name="l00086"></a>00086 <span class="keywordtype">void</span> *rv;
<a name="l00087"></a>00087 <span class="keywordtype">int</span> len;
<a name="l00088"></a>00088
<a name="l00089"></a>00089 len = mbstowcs(NULL, filename, 0) + 1;
<a name="l00090"></a>00090 wfilename = malloc(len * <span class="keyword">sizeof</span>(WCHAR));
<a name="l00091"></a>00091 mbstowcs(wfilename, filename, len);
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keywordflow">if</span> ((ffm =
<a name="l00094"></a>00094 CreateFileForMappingW(wfilename, GENERIC_READ, FILE_SHARE_READ,
<a name="l00095"></a>00095 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
<a name="l00096"></a>00096 NULL)) == INVALID_HANDLE_VALUE) {
<a name="l00097"></a>00097 <a class="code" href="err_8h.html#a5f7b2f58f5a663a6bdd51f197ae21993" title="Print error message to standard error stream.">E_ERROR</a>(<span class="stringliteral">"Failed to CreateFileForMapping(%s): %08x\n"</span>, filename,
<a name="l00098"></a>00098 GetLastError());
<a name="l00099"></a>00099 <span class="keywordflow">return</span> NULL;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 <span class="keywordflow">if</span> ((fd =
<a name="l00102"></a>00102 CreateFileMappingW(ffm, NULL, PAGE_READONLY, 0, 0, NULL)) == NULL) {
<a name="l00103"></a>00103 <a class="code" href="err_8h.html#a5f7b2f58f5a663a6bdd51f197ae21993" title="Print error message to standard error stream.">E_ERROR</a>(<span class="stringliteral">"Failed to CreateFileMapping: %08x\n"</span>, GetLastError());
<a name="l00104"></a>00104 CloseHandle(ffm);
<a name="l00105"></a>00105 <span class="keywordflow">return</span> NULL;
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 rv = MapViewOfFile(fd, FILE_MAP_READ, 0, 0, 0);
<a name="l00108"></a>00108 free(wfilename);
<a name="l00109"></a>00109 CloseHandle(ffm);
<a name="l00110"></a>00110 CloseHandle(fd);
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordflow">return</span> (<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *) rv;
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keywordtype">void</span>
<a name="l00116"></a>00116 <a class="code" href="mmio_8h.html#a341a9c1cc8a3c4bddfd2d29a1b0993f6" title="Unmap a file, releasing memory associated with it.">mmio_file_unmap</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 <span class="keywordflow">if</span> (!UnmapViewOfFile((<span class="keywordtype">void</span> *)mf)) {
<a name="l00119"></a>00119 <a class="code" href="err_8h.html#a5f7b2f58f5a663a6bdd51f197ae21993" title="Print error message to standard error stream.">E_ERROR</a>(<span class="stringliteral">"Failed to UnmapViewOfFile: %08x\n"</span>, GetLastError());
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keywordtype">void</span> *
<a name="l00124"></a>00124 <a class="code" href="mmio_8h.html#a5e6d8bf5cd7785563abc18c70a31ce0d" title="Get a pointer to the memory mapped for a file.">mmio_file_ptr</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="keywordflow">return</span> (<span class="keywordtype">void</span> *)mf;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="preprocessor">#elif defined(WIN32) </span><span class="comment">/* !WINCE */</span>
<a name="l00130"></a>00130 <span class="keyword">struct </span><a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_s</a> {
<a name="l00131"></a>00131 <span class="keywordtype">int</span> dummy;
<a name="l00132"></a>00132 };
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *
<a name="l00135"></a>00135 <a class="code" href="mmio_8h.html#ae3367a51a50a6108178ecfdd6c983c61" title="Memory-map a file for reading.">mmio_file_read</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename)
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137 HANDLE ffm, fd;
<a name="l00138"></a>00138 <span class="keywordtype">void</span> *rv;
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordflow">if</span> ((ffm = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
<a name="l00141"></a>00141 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
<a name="l00142"></a>00142 NULL)) == INVALID_HANDLE_VALUE) {
<a name="l00143"></a>00143 <a class="code" href="err_8h.html#a5f7b2f58f5a663a6bdd51f197ae21993" title="Print error message to standard error stream.">E_ERROR</a>(<span class="stringliteral">"Failed to CreateFile(%s): %08x\n"</span>,
<a name="l00144"></a>00144 filename, GetLastError());
<a name="l00145"></a>00145 <span class="keywordflow">return</span> NULL;
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147 <span class="keywordflow">if</span> ((fd = CreateFileMapping(ffm, NULL,
<a name="l00148"></a>00148 PAGE_READONLY, 0, 0, NULL)) == NULL) {
<a name="l00149"></a>00149 <a class="code" href="err_8h.html#a5f7b2f58f5a663a6bdd51f197ae21993" title="Print error message to standard error stream.">E_ERROR</a>(<span class="stringliteral">"Failed to CreateFileMapping: %08x\n"</span>, GetLastError());
<a name="l00150"></a>00150 CloseHandle(ffm);
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152 rv = MapViewOfFile(fd, FILE_MAP_READ, 0, 0, 0);
<a name="l00153"></a>00153 CloseHandle(ffm);
<a name="l00154"></a>00154 CloseHandle(fd);
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="keywordflow">return</span> (<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *)rv;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keywordtype">void</span>
<a name="l00160"></a>00160 <a class="code" href="mmio_8h.html#a341a9c1cc8a3c4bddfd2d29a1b0993f6" title="Unmap a file, releasing memory associated with it.">mmio_file_unmap</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 <span class="keywordflow">if</span> (!UnmapViewOfFile((<span class="keywordtype">void</span> *)mf)) {
<a name="l00163"></a>00163 <a class="code" href="err_8h.html#a5f7b2f58f5a663a6bdd51f197ae21993" title="Print error message to standard error stream.">E_ERROR</a>(<span class="stringliteral">"Failed to UnmapViewOfFile: %08x\n"</span>, GetLastError());
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keywordtype">void</span> *
<a name="l00168"></a>00168 <a class="code" href="mmio_8h.html#a5e6d8bf5cd7785563abc18c70a31ce0d" title="Get a pointer to the memory mapped for a file.">mmio_file_ptr</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 <span class="keywordflow">return</span> (<span class="keywordtype">void</span> *)mf;
<a name="l00171"></a>00171 }
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="preprocessor">#else </span><span class="comment">/* !WIN32, !WINCE */</span>
<a name="l00174"></a>00174 <span class="preprocessor">#if defined(__ADSPBLACKFIN__) </span><span class="comment">/* This is true for both uClinux and VisualDSP++,</span>
<a name="l00175"></a>00175 <span class="comment"> but actually we need a better way to detect it. */</span>
<a name="l00176"></a>00176 <span class="keyword">struct </span><a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_s</a> {
<a name="l00177"></a>00177 <span class="keywordtype">int</span> dummy;
<a name="l00178"></a>00178 };
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *
<a name="l00181"></a>00181 <a class="code" href="mmio_8h.html#ae3367a51a50a6108178ecfdd6c983c61" title="Memory-map a file for reading.">mmio_file_read</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename)
<a name="l00182"></a>00182 {
<a name="l00183"></a>00183 <a class="code" href="err_8h.html#a1a4495946ab2449d61108fe829a94613" title="Exit with non-zero status after error message.">E_FATAL</a>(<span class="stringliteral">"mmio is not implemented on this platform!"</span>);
<a name="l00184"></a>00184 <span class="keywordflow">return</span> NULL;
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="keywordtype">void</span>
<a name="l00188"></a>00188 <a class="code" href="mmio_8h.html#a341a9c1cc8a3c4bddfd2d29a1b0993f6" title="Unmap a file, releasing memory associated with it.">mmio_file_unmap</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00189"></a>00189 {
<a name="l00190"></a>00190 <a class="code" href="err_8h.html#a1a4495946ab2449d61108fe829a94613" title="Exit with non-zero status after error message.">E_FATAL</a>(<span class="stringliteral">"mmio is not implemented on this platform!"</span>);
<a name="l00191"></a>00191 }
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="keywordtype">void</span> *
<a name="l00194"></a>00194 <a class="code" href="mmio_8h.html#a5e6d8bf5cd7785563abc18c70a31ce0d" title="Get a pointer to the memory mapped for a file.">mmio_file_ptr</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00195"></a>00195 {
<a name="l00196"></a>00196 <a class="code" href="err_8h.html#a1a4495946ab2449d61108fe829a94613" title="Exit with non-zero status after error message.">E_FATAL</a>(<span class="stringliteral">"mmio is not implemented on this platform!"</span>);
<a name="l00197"></a>00197 <span class="keywordflow">return</span> NULL;
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 <span class="preprocessor">#else </span><span class="comment">/* !__ADSPBLACKFIN__ */</span>
<a name="l00200"></a><a class="code" href="structmmio__file__s.html">00200</a> <span class="keyword">struct </span><a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_s</a> {
<a name="l00201"></a>00201 <span class="keywordtype">void</span> *ptr;
<a name="l00202"></a>00202 <span class="keywordtype">size_t</span> mapsize;
<a name="l00203"></a>00203 };
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *
<a name="l00206"></a><a class="code" href="mmio_8h.html#ae3367a51a50a6108178ecfdd6c983c61">00206</a> <a class="code" href="mmio_8h.html#ae3367a51a50a6108178ecfdd6c983c61" title="Memory-map a file for reading.">mmio_file_read</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename)
<a name="l00207"></a>00207 {
<a name="l00208"></a>00208 <a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf;
<a name="l00209"></a>00209 <span class="keyword">struct </span>stat buf;
<a name="l00210"></a>00210 <span class="keywordtype">void</span> *ptr;
<a name="l00211"></a>00211 <span class="keywordtype">int</span> fd;
<a name="l00212"></a>00212 <span class="keywordtype">size_t</span> pagesize;
<a name="l00213"></a>00213
<a name="l00214"></a>00214 <span class="keywordflow">if</span> ((fd = open(filename, O_RDONLY)) == -1) {
<a name="l00215"></a>00215 <a class="code" href="err_8h.html#a54ffbfe898d74595c586a1f48f32ef03" title="Print error text; Call perror(&quot;&quot;);.">E_ERROR_SYSTEM</a>(<span class="stringliteral">"Failed to open %s"</span>, filename);
<a name="l00216"></a>00216 <span class="keywordflow">return</span> NULL;
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218 <span class="keywordflow">if</span> (fstat(fd, &buf) == -1) {
<a name="l00219"></a>00219 <a class="code" href="err_8h.html#a54ffbfe898d74595c586a1f48f32ef03" title="Print error text; Call perror(&quot;&quot;);.">E_ERROR_SYSTEM</a>(<span class="stringliteral">"Failed to stat %s"</span>, filename);
<a name="l00220"></a>00220 <span class="keywordflow">return</span> NULL;
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222 ptr = mmap(NULL, buf.st_size, PROT_READ, MAP_SHARED, fd, 0);
<a name="l00223"></a>00223 <span class="keywordflow">if</span> (ptr == (<span class="keywordtype">void</span> *)-1) {
<a name="l00224"></a>00224 <a class="code" href="err_8h.html#a54ffbfe898d74595c586a1f48f32ef03" title="Print error text; Call perror(&quot;&quot;);.">E_ERROR_SYSTEM</a>(<span class="stringliteral">"Failed to mmap %lld bytes"</span>, (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span>)buf.st_size);
<a name="l00225"></a>00225 <span class="keywordflow">return</span> NULL;
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227 close(fd);
<a name="l00228"></a>00228 mf = <a class="code" href="ckd__alloc_8h.html#aa00ef21903bc4f8a972488417adc8d2e" title="Macros to simplify the use of above functions.">ckd_calloc</a>(1, <span class="keyword">sizeof</span>(*mf));
<a name="l00229"></a>00229 mf->ptr = ptr;
<a name="l00230"></a>00230 <span class="comment">/* Align map size to next page. */</span>
<a name="l00231"></a>00231 pagesize = getpagesize();
<a name="l00232"></a>00232 mf->mapsize = (buf.st_size + pagesize - 1) / pagesize * pagesize;
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="keywordflow">return</span> mf;
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236
<a name="l00237"></a>00237 <span class="keywordtype">void</span>
<a name="l00238"></a><a class="code" href="mmio_8h.html#a341a9c1cc8a3c4bddfd2d29a1b0993f6">00238</a> <a class="code" href="mmio_8h.html#a341a9c1cc8a3c4bddfd2d29a1b0993f6" title="Unmap a file, releasing memory associated with it.">mmio_file_unmap</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00239"></a>00239 {
<a name="l00240"></a>00240 <span class="keywordflow">if</span> (mf == NULL)
<a name="l00241"></a>00241 <span class="keywordflow">return</span>;
<a name="l00242"></a>00242 <span class="keywordflow">if</span> (munmap(mf->ptr, mf->mapsize) < 0) {
<a name="l00243"></a>00243 <a class="code" href="err_8h.html#a54ffbfe898d74595c586a1f48f32ef03" title="Print error text; Call perror(&quot;&quot;);.">E_ERROR_SYSTEM</a>(<span class="stringliteral">"Failed to unmap %ld bytes at %p"</span>, mf->mapsize, mf->ptr);
<a name="l00244"></a>00244 }
<a name="l00245"></a>00245 <a class="code" href="ckd__alloc_8h.html#a31c6b405558620ac37599737b5722fbf" title="Test and free a 1-D array.">ckd_free</a>(mf);
<a name="l00246"></a>00246 }
<a name="l00247"></a>00247
<a name="l00248"></a>00248 <span class="keywordtype">void</span> *
<a name="l00249"></a><a class="code" href="mmio_8h.html#a5e6d8bf5cd7785563abc18c70a31ce0d">00249</a> <a class="code" href="mmio_8h.html#a5e6d8bf5cd7785563abc18c70a31ce0d" title="Get a pointer to the memory mapped for a file.">mmio_file_ptr</a>(<a class="code" href="structmmio__file__s.html" title="Silvio Moioli: slightly updated.">mmio_file_t</a> *mf)
<a name="l00250"></a>00250 {
<a name="l00251"></a>00251 <span class="keywordflow">return</span> mf->ptr;
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253 <span class="preprocessor">#endif </span><span class="comment">/* !__ADSPBLACKFIN__ */</span>
<a name="l00254"></a>00254 <span class="preprocessor">#endif </span><span class="comment">/* !(WINCE || WIN32) */</span>
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