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rpm-apidocs-4.4.2.3-34.el5.i386.rpm

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<h1>rpmio/rpmsw.c</h1><a href="rpmsw_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
<a name="l00005"></a>00005 <span class="preprocessor">#include "<a class="code" href="system_8h.html">system.h</a>"</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include &lt;<a class="code" href="rpmsw_8h.html">rpmsw.h</a>&gt;</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include "<a class="code" href="debug_8h.html">debug.h</a>"</span>
<a name="l00008"></a>00008 
<a name="l00009"></a>00009 <span class="preprocessor">#if defined(__LCLINT__)</span>
<a name="l00010"></a>00010 <span class="preprocessor"></span><span class="comment">/*@-exportheader@*/</span>
<a name="l00011"></a>00011 <span class="keyword">extern</span> <span class="keywordtype">int</span> nanosleep(<span class="keyword">const</span> <span class="keyword">struct</span> timespec *__requested_time,
<a name="l00012"></a>00012                 <span class="comment">/*@out@*/</span> <span class="comment">/*@null@*/</span> <span class="keyword">struct</span> timespec *__remaining)
<a name="l00013"></a>00013         <span class="comment">/*@globals errno @*/</span>
<a name="l00014"></a>00014         <span class="comment">/*@modifies *__remaining, errno @*/</span>;
<a name="l00015"></a>00015 <span class="comment">/*@=exportheader@*/</span>
<a name="l00016"></a>00016 <span class="preprocessor">#endif</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span>
<a name="l00018"></a>00018 <span class="comment">/*@unchecked@*/</span>
<a name="l00019"></a><a class="code" href="rpmsw_8c.html#0045e21bd2dfbdec45b4c52a63b98309">00019</a> <span class="keyword">static</span> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="rpmsw_8c.html#0045e21bd2dfbdec45b4c52a63b98309">rpmsw_overhead</a> = 0;
<a name="l00020"></a>00020 
<a name="l00021"></a>00021 <span class="comment">/*@unchecked@*/</span>
<a name="l00022"></a><a class="code" href="rpmsw_8c.html#6ca8fec7a70172ebfce968fb9b16a9e8">00022</a> <span class="keyword">static</span> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="rpmsw_8c.html#6ca8fec7a70172ebfce968fb9b16a9e8">rpmsw_cycles</a> = 1;
<a name="l00023"></a>00023 
<a name="l00024"></a>00024 <span class="comment">/*@unchecked@*/</span>
<a name="l00025"></a><a class="code" href="rpmsw_8c.html#0d6b48252d7e5871a67bb4c51ccb5f9a">00025</a> <span class="keyword">static</span> <span class="keywordtype">int</span> <a class="code" href="rpmsw_8c.html#0d6b48252d7e5871a67bb4c51ccb5f9a">rpmsw_initialized</a> = 0;
<a name="l00026"></a>00026 
<a name="l00027"></a><a class="code" href="rpmsw_8h.html#d3978708dadb86ed1e480cfa37bedfbc">00027</a> <a class="code" href="structrpmsw__s.html">rpmsw</a> <a class="code" href="rpmsw_8c.html#d3978708dadb86ed1e480cfa37bedfbc">rpmswNow</a>(<a class="code" href="structrpmsw__s.html">rpmsw</a> sw)
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029     <span class="keywordflow">if</span> (!<a class="code" href="rpmsw_8c.html#0d6b48252d7e5871a67bb4c51ccb5f9a">rpmsw_initialized</a>)
<a name="l00030"></a>00030         (void) <a class="code" href="rpmsw_8c.html#7736ea08d529c45512d8cd17c802baa1">rpmswInit</a>();
<a name="l00031"></a>00031     <span class="keywordflow">if</span> (sw == NULL)
<a name="l00032"></a>00032         <span class="keywordflow">return</span> NULL;
<a name="l00033"></a>00033     <span class="keywordflow">if</span> (gettimeofday(&amp;sw-&gt;<a class="code" href="structrpmsw__s.html#fe456f0e282bd8873f8d88609c455ac2">u</a>.<a class="code" href="structrpmsw__s.html#b70a7306587af628019b6fd350569cce">tv</a>, NULL))
<a name="l00034"></a>00034         <span class="keywordflow">return</span> NULL;
<a name="l00035"></a>00035     <span class="keywordflow">return</span> sw;
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037 
<a name="l00044"></a>00044 <span class="keyword">static</span> <span class="keyword">inline</span>
<a name="l00045"></a><a class="code" href="group__rpmio.html#g07b90240cad10dd8094502d263109c6e">00045</a> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="group__rpmio.html#g07b90240cad10dd8094502d263109c6e">tvsub</a>(<span class="comment">/*@null@*/</span> <span class="keyword">const</span> <span class="keyword">struct</span> timeval * etv,
<a name="l00046"></a>00046                 <span class="comment">/*@null@*/</span> <span class="keyword">const</span> <span class="keyword">struct</span> timeval * btv)
<a name="l00047"></a>00047         <span class="comment">/*@*/</span>
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049     time_t secs, <a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a>;
<a name="l00050"></a>00050     <span class="keywordflow">if</span> (etv == NULL  || btv == NULL) <span class="keywordflow">return</span> 0;
<a name="l00051"></a>00051     secs = etv-&gt;tv_sec - btv-&gt;tv_sec;
<a name="l00052"></a>00052     <span class="keywordflow">for</span> (usecs = etv-&gt;tv_usec - btv-&gt;tv_usec; usecs &lt; 0; usecs += 1000000)
<a name="l00053"></a>00053         secs--;
<a name="l00054"></a>00054     <span class="keywordflow">return</span> ((secs * 1000000) + usecs);
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056 
<a name="l00057"></a><a class="code" href="rpmsw_8h.html#640c70b2a8e24884797ed574f06cd11e">00057</a> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="rpmsw_8c.html#640c70b2a8e24884797ed574f06cd11e">rpmswDiff</a>(<a class="code" href="structrpmsw__s.html">rpmsw</a> end, <a class="code" href="structrpmsw__s.html">rpmsw</a> <a class="code" href="structrpmop__s.html#ed842a4c7392f24084306394c51250fb">begin</a>)
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059     <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> ticks = 0;
<a name="l00060"></a>00060 
<a name="l00061"></a>00061     <span class="keywordflow">if</span> (end == NULL || <a class="code" href="structrpmop__s.html#ed842a4c7392f24084306394c51250fb">begin</a> == NULL)
<a name="l00062"></a>00062         <span class="keywordflow">return</span> 0;
<a name="l00063"></a>00063     ticks = <a class="code" href="group__rpmio.html#g07b90240cad10dd8094502d263109c6e">tvsub</a>(&amp;end-&gt;<a class="code" href="structrpmsw__s.html#fe456f0e282bd8873f8d88609c455ac2">u</a>.<a class="code" href="structrpmsw__s.html#b70a7306587af628019b6fd350569cce">tv</a>, &amp;<a class="code" href="structrpmop__s.html#ed842a4c7392f24084306394c51250fb">begin</a>-&gt;<a class="code" href="structrpmsw__s.html#fe456f0e282bd8873f8d88609c455ac2">u</a>.<a class="code" href="structrpmsw__s.html#b70a7306587af628019b6fd350569cce">tv</a>);
<a name="l00064"></a>00064     <span class="keywordflow">if</span> (ticks &gt;= <a class="code" href="rpmsw_8c.html#0045e21bd2dfbdec45b4c52a63b98309">rpmsw_overhead</a>)
<a name="l00065"></a>00065         ticks -= <a class="code" href="rpmsw_8c.html#0045e21bd2dfbdec45b4c52a63b98309">rpmsw_overhead</a>;
<a name="l00066"></a>00066     <span class="keywordflow">if</span> (<a class="code" href="rpmsw_8c.html#6ca8fec7a70172ebfce968fb9b16a9e8">rpmsw_cycles</a> &gt; 1)
<a name="l00067"></a>00067         ticks /= <a class="code" href="rpmsw_8c.html#6ca8fec7a70172ebfce968fb9b16a9e8">rpmsw_cycles</a>;
<a name="l00068"></a>00068     <span class="keywordflow">return</span> ticks;
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 
<a name="l00071"></a><a class="code" href="rpmsw_8h.html#7736ea08d529c45512d8cd17c802baa1">00071</a> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="rpmsw_8c.html#7736ea08d529c45512d8cd17c802baa1">rpmswInit</a>(<span class="keywordtype">void</span>)
<a name="l00072"></a>00072         <span class="comment">/*@globals rpmsw_cycles, rpmsw_initialized, rpmsw_overhead,</span>
<a name="l00073"></a>00073 <span class="comment">                rpmsw_type @*/</span>
<a name="l00074"></a>00074         <span class="comment">/*@modifies rpmsw_cycles, rpmsw_initialized, rpmsw_overhead,</span>
<a name="l00075"></a>00075 <span class="comment">                rpmsw_type @*/</span>
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077     <span class="keyword">struct </span><a class="code" href="structrpmsw__s.html">rpmsw_s</a> begin, end;
<a name="l00078"></a>00078     <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> sum_overhead = 0;
<a name="l00079"></a>00079     <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> cycles;
<a name="l00080"></a>00080     <span class="keywordtype">int</span> i;
<a name="l00081"></a>00081 
<a name="l00082"></a>00082     <a class="code" href="rpmsw_8c.html#0d6b48252d7e5871a67bb4c51ccb5f9a">rpmsw_initialized</a> = 1;
<a name="l00083"></a>00083 
<a name="l00084"></a>00084     <a class="code" href="rpmsw_8c.html#0045e21bd2dfbdec45b4c52a63b98309">rpmsw_overhead</a> = 0;
<a name="l00085"></a>00085     <a class="code" href="rpmsw_8c.html#6ca8fec7a70172ebfce968fb9b16a9e8">rpmsw_cycles</a> = 0;
<a name="l00086"></a>00086 
<a name="l00087"></a>00087     <span class="comment">/* Convergence for simultaneous cycles and overhead is overkill ... */</span>
<a name="l00088"></a>00088     <span class="keywordflow">for</span> (i = 0; i &lt; 3; i++) {
<a name="l00089"></a>00089         <span class="comment">/* Calculate timing overhead in usecs. */</span>
<a name="l00090"></a>00090 <span class="comment">/*@-uniondef@*/</span>
<a name="l00091"></a>00091         (<span class="keywordtype">void</span>) <a class="code" href="rpmsw_8c.html#d3978708dadb86ed1e480cfa37bedfbc">rpmswNow</a>(&amp;begin);
<a name="l00092"></a>00092         sum_overhead += <a class="code" href="rpmsw_8c.html#640c70b2a8e24884797ed574f06cd11e">rpmswDiff</a>(<a class="code" href="rpmsw_8c.html#d3978708dadb86ed1e480cfa37bedfbc">rpmswNow</a>(&amp;end), &amp;begin);
<a name="l00093"></a>00093 <span class="comment">/*@=uniondef@*/</span>
<a name="l00094"></a>00094 
<a name="l00095"></a>00095         <a class="code" href="rpmsw_8c.html#0045e21bd2dfbdec45b4c52a63b98309">rpmsw_overhead</a> = sum_overhead/(i+1);
<a name="l00096"></a>00096     }
<a name="l00097"></a>00097 
<a name="l00098"></a>00098     <span class="keywordflow">return</span> <a class="code" href="rpmsw_8c.html#0045e21bd2dfbdec45b4c52a63b98309">rpmsw_overhead</a>;
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100 
<a name="l00101"></a><a class="code" href="group__rpmio.html#g7f69caae88f9572093fc8b0adf8ecf65">00101</a> <span class="keywordtype">int</span> <a class="code" href="group__rpmio.html#g7f69caae88f9572093fc8b0adf8ecf65">rpmswEnter</a>(<a class="code" href="structrpmop__s.html">rpmop</a> op, ssize_t rc)
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103     <span class="keywordflow">if</span> (op == NULL)
<a name="l00104"></a>00104         <span class="keywordflow">return</span> 0;
<a name="l00105"></a>00105 
<a name="l00106"></a>00106     op-&gt;<a class="code" href="structrpmop__s.html#9634b69532968bc33f29d42025fce0ea">count</a>++;
<a name="l00107"></a>00107     <span class="keywordflow">if</span> (rc &lt; 0) {
<a name="l00108"></a>00108         op-&gt;<a class="code" href="structrpmop__s.html#d21e27b2079571a893e786e44e60f24e">bytes</a> = 0;
<a name="l00109"></a>00109         op-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a> = 0;
<a name="l00110"></a>00110     }
<a name="l00111"></a>00111 <span class="comment">/*@-uniondef@*/</span>
<a name="l00112"></a>00112     (void) <a class="code" href="rpmsw_8c.html#d3978708dadb86ed1e480cfa37bedfbc">rpmswNow</a>(&amp;op-&gt;<a class="code" href="structrpmop__s.html#ed842a4c7392f24084306394c51250fb">begin</a>);
<a name="l00113"></a>00113 <span class="comment">/*@=uniondef@*/</span>
<a name="l00114"></a>00114     <span class="keywordflow">return</span> 0;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116 
<a name="l00117"></a><a class="code" href="group__rpmio.html#g59c7d4152875cee4e893b5a27ce6b02a">00117</a> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="group__rpmio.html#g59c7d4152875cee4e893b5a27ce6b02a">rpmswExit</a>(<a class="code" href="structrpmop__s.html">rpmop</a> op, ssize_t rc)
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119     <span class="keyword">struct </span><a class="code" href="structrpmsw__s.html">rpmsw_s</a> end;
<a name="l00120"></a>00120 
<a name="l00121"></a>00121     <span class="keywordflow">if</span> (op == NULL)
<a name="l00122"></a>00122         <span class="keywordflow">return</span> 0;
<a name="l00123"></a>00123 
<a name="l00124"></a>00124 <span class="comment">/*@-uniondef@*/</span>
<a name="l00125"></a>00125     op-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a> += <a class="code" href="rpmsw_8c.html#640c70b2a8e24884797ed574f06cd11e">rpmswDiff</a>(<a class="code" href="rpmsw_8c.html#d3978708dadb86ed1e480cfa37bedfbc">rpmswNow</a>(&amp;end), &amp;op-&gt;<a class="code" href="structrpmop__s.html#ed842a4c7392f24084306394c51250fb">begin</a>);
<a name="l00126"></a>00126 <span class="comment">/*@=uniondef@*/</span>
<a name="l00127"></a>00127     <span class="keywordflow">if</span> (rc &gt; 0)
<a name="l00128"></a>00128         op-&gt;<a class="code" href="structrpmop__s.html#d21e27b2079571a893e786e44e60f24e">bytes</a> += rc;
<a name="l00129"></a>00129     op-&gt;<a class="code" href="structrpmop__s.html#ed842a4c7392f24084306394c51250fb">begin</a> = end;    <span class="comment">/* structure assignment */</span>
<a name="l00130"></a>00130     <span class="keywordflow">return</span> op-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a>;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 
<a name="l00133"></a><a class="code" href="group__rpmio.html#g46822386355eebdf0030ed862eae9b35">00133</a> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="group__rpmio.html#g46822386355eebdf0030ed862eae9b35">rpmswAdd</a>(<a class="code" href="structrpmop__s.html">rpmop</a> to, <a class="code" href="structrpmop__s.html">rpmop</a> from)
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135     <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> usecs = 0;
<a name="l00136"></a>00136     <span class="keywordflow">if</span> (to != NULL &amp;&amp; from != NULL) {
<a name="l00137"></a>00137         to-&gt;<a class="code" href="structrpmop__s.html#9634b69532968bc33f29d42025fce0ea">count</a> += from-&gt;<a class="code" href="structrpmop__s.html#9634b69532968bc33f29d42025fce0ea">count</a>;
<a name="l00138"></a>00138         to-&gt;<a class="code" href="structrpmop__s.html#d21e27b2079571a893e786e44e60f24e">bytes</a> += from-&gt;<a class="code" href="structrpmop__s.html#d21e27b2079571a893e786e44e60f24e">bytes</a>;
<a name="l00139"></a>00139         to-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a> += from-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a>;
<a name="l00140"></a>00140         usecs = to-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a>;
<a name="l00141"></a>00141     }
<a name="l00142"></a>00142     <span class="keywordflow">return</span> usecs;
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 
<a name="l00145"></a><a class="code" href="group__rpmio.html#g85fb8eaf390eb601c4c3127265639670">00145</a> <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> <a class="code" href="group__rpmio.html#g85fb8eaf390eb601c4c3127265639670">rpmswSub</a>(<a class="code" href="structrpmop__s.html">rpmop</a> to, <a class="code" href="structrpmop__s.html">rpmop</a> from)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147     <a class="code" href="group__rpmio.html#g17f1fdbc48f3de7d0498dc8a14d8fad3">rpmtime_t</a> usecs = 0;
<a name="l00148"></a>00148     <span class="keywordflow">if</span> (to != NULL &amp;&amp; from != NULL) {
<a name="l00149"></a>00149         to-&gt;<a class="code" href="structrpmop__s.html#9634b69532968bc33f29d42025fce0ea">count</a> -= from-&gt;<a class="code" href="structrpmop__s.html#9634b69532968bc33f29d42025fce0ea">count</a>;
<a name="l00150"></a>00150         to-&gt;<a class="code" href="structrpmop__s.html#d21e27b2079571a893e786e44e60f24e">bytes</a> -= from-&gt;<a class="code" href="structrpmop__s.html#d21e27b2079571a893e786e44e60f24e">bytes</a>;
<a name="l00151"></a>00151         to-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a> -= from-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a>;
<a name="l00152"></a>00152         usecs = to-&gt;<a class="code" href="structrpmop__s.html#441e7e2e6184a6e052c3955065326214">usecs</a>;
<a name="l00153"></a>00153     }
<a name="l00154"></a>00154     <span class="keywordflow">return</span> usecs;
<a name="l00155"></a>00155 }
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