linux下gettimeofday函数windows替换方法(详解)
<p><span><strong>实例如下：</strong></span></p>
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<code class="xhtml plain">#include <</code><code class="xhtml keyword">time.h</code><code class="xhtml plain">></code>
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<code class="xhtml plain">#ifdef WIN32</code>
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<code class="xhtml plain"># include <</code><code class="xhtml keyword">windows.h</code><code class="xhtml plain">></code>
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<code class="xhtml plain">#else</code>
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<code class="xhtml plain"># include <</code><code class="xhtml keyword">sys</code><code class="xhtml plain">/time.h></code>
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<code class="xhtml plain">#endif</code>
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<code class="xhtml plain">#ifdef WIN32</code>
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<code class="xhtml plain">int</code>
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<code class="xhtml plain">gettimeofday(struct timeval *tp, void *tzp)</code>
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<code class="xhtml plain">{</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">time_t clock;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">struct tm tm;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">SYSTEMTIME wtm;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">GetLocalTime(&wtm);</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tm.tm_year = wtm.wYear - 1900;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tm.tm_mon = wtm.wMonth - 1;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tm.tm_mday = wtm.wDay;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tm.tm_hour = wtm.wHour;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tm.tm_min = wtm.wMinute;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tm.tm_sec = wtm.wSecond;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tm. tm_isdst = -1;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">clock = mktime(&tm);</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tp->tv_sec = clock;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">tp->tv_usec = wtm.wMilliseconds * 1000;</code>
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<code class="xhtml spaces"> </code><code class="xhtml plain">return (0);</code>
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<code class="xhtml plain">}</code>
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<code class="xhtml plain">#endif</code>
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