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17<title>Debugging with GDB: gettimeofday</title>
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64<a name="gettimeofday"></a>
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70<a name="gettimeofday-1"></a>
71<h4 class="unnumberedsubsubsec">gettimeofday</h4>
72<a name="index-gettimeofday_002c-file_002di_002fo-system-call"></a>
73
74<dl compact="compact">
75<dt>Synopsis:</dt>
76<dd><div class="smallexample">
77<pre class="smallexample">int gettimeofday(struct timeval *tv, void *tz);
78</pre></div>
79
80</dd>
81<dt>Request:</dt>
82<dd><p>&lsquo;<samp>Fgettimeofday,<var>tvptr</var>,<var>tzptr</var></samp>&rsquo;
83</p>
84</dd>
85<dt>Return value:</dt>
86<dd><p>On success, 0 is returned, -1 otherwise.
87</p>
88</dd>
89<dt>Errors:</dt>
90<dd>
91<dl compact="compact">
92<dt><code>EINVAL</code></dt>
93<dd><p><var>tz</var> is a non-NULL pointer.
94</p>
95</dd>
96<dt><code>EFAULT</code></dt>
97<dd><p><var>tvptr</var> and/or <var>tzptr</var> is an invalid pointer value.
98</p></dd>
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100
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