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<p>Utility functions for handling timeval calculations.
<a href="#details">More...</a></p>
<p><a href="timeval_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:adc226d28cef9e36fca56c355a03903f5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#adc226d28cef9e36fca56c355a03903f5">PA_MSEC_PER_SEC</a>   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) 1000ULL)</td></tr>
<tr class="memdesc:adc226d28cef9e36fca56c355a03903f5"><td class="mdescLeft"> </td><td class="mdescRight">The number of milliseconds in a second. <a href="#adc226d28cef9e36fca56c355a03903f5">More...</a><br/></td></tr>
<tr class="separator:adc226d28cef9e36fca56c355a03903f5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a65605026fb393422df650916ef7e3e32"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a65605026fb393422df650916ef7e3e32">PA_USEC_PER_SEC</a>   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) 1000000ULL)</td></tr>
<tr class="memdesc:a65605026fb393422df650916ef7e3e32"><td class="mdescLeft"> </td><td class="mdescRight">The number of microseconds in a second. <a href="#a65605026fb393422df650916ef7e3e32">More...</a><br/></td></tr>
<tr class="separator:a65605026fb393422df650916ef7e3e32"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a98cd21cdaba8d04b078ad3f4e8139a11"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a98cd21cdaba8d04b078ad3f4e8139a11">PA_NSEC_PER_SEC</a>   ((unsigned long long) 1000000000ULL)</td></tr>
<tr class="memdesc:a98cd21cdaba8d04b078ad3f4e8139a11"><td class="mdescLeft"> </td><td class="mdescRight">The number of nanoseconds in a second. <a href="#a98cd21cdaba8d04b078ad3f4e8139a11">More...</a><br/></td></tr>
<tr class="separator:a98cd21cdaba8d04b078ad3f4e8139a11"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a13ded4b857d4148545f7e59022700a95"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a13ded4b857d4148545f7e59022700a95">PA_USEC_PER_MSEC</a>   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) 1000ULL)</td></tr>
<tr class="memdesc:a13ded4b857d4148545f7e59022700a95"><td class="mdescLeft"> </td><td class="mdescRight">The number of microseconds in a millisecond. <a href="#a13ded4b857d4148545f7e59022700a95">More...</a><br/></td></tr>
<tr class="separator:a13ded4b857d4148545f7e59022700a95"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aaddb92588f282c06ac13d3d9530ff604"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#aaddb92588f282c06ac13d3d9530ff604">PA_NSEC_PER_MSEC</a>   ((unsigned long long) 1000000ULL)</td></tr>
<tr class="memdesc:aaddb92588f282c06ac13d3d9530ff604"><td class="mdescLeft"> </td><td class="mdescRight">The number of nanoseconds in a millisecond. <a href="#aaddb92588f282c06ac13d3d9530ff604">More...</a><br/></td></tr>
<tr class="separator:aaddb92588f282c06ac13d3d9530ff604"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acfb6c27ac89618aa980b30f2724263ac"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#acfb6c27ac89618aa980b30f2724263ac">PA_NSEC_PER_USEC</a>   ((unsigned long long) 1000ULL)</td></tr>
<tr class="memdesc:acfb6c27ac89618aa980b30f2724263ac"><td class="mdescLeft"> </td><td class="mdescRight">The number of nanoseconds in a microsecond. <a href="#acfb6c27ac89618aa980b30f2724263ac">More...</a><br/></td></tr>
<tr class="separator:acfb6c27ac89618aa980b30f2724263ac"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af0ac47427f9d7fa796ab9bdaa96db1ca"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#af0ac47427f9d7fa796ab9bdaa96db1ca">PA_USEC_INVALID</a>   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) -1)</td></tr>
<tr class="memdesc:af0ac47427f9d7fa796ab9bdaa96db1ca"><td class="mdescLeft"> </td><td class="mdescRight">Invalid time in usec. <a href="#af0ac47427f9d7fa796ab9bdaa96db1ca">More...</a><br/></td></tr>
<tr class="separator:af0ac47427f9d7fa796ab9bdaa96db1ca"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad127de6077e6f8a0288099368fb91762"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#ad127de6077e6f8a0288099368fb91762">PA_USEC_MAX</a>   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) -2)</td></tr>
<tr class="memdesc:ad127de6077e6f8a0288099368fb91762"><td class="mdescLeft"> </td><td class="mdescRight">Biggest time in usec. <a href="#ad127de6077e6f8a0288099368fb91762">More...</a><br/></td></tr>
<tr class="separator:ad127de6077e6f8a0288099368fb91762"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a6b172af60031b694582956e8b4ed6785"><td class="memItemLeft" align="right" valign="top">struct timeval * </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a6b172af60031b694582956e8b4ed6785">pa_gettimeofday</a> (struct timeval *tv)</td></tr>
<tr class="memdesc:a6b172af60031b694582956e8b4ed6785"><td class="mdescLeft"> </td><td class="mdescRight">Return the current wallclock timestamp, just like UNIX gettimeofday(). <a href="#a6b172af60031b694582956e8b4ed6785">More...</a><br/></td></tr>
<tr class="separator:a6b172af60031b694582956e8b4ed6785"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a30ef3f1f4aa7a57fe6fcf6b217725161"><td class="memItemLeft" align="right" valign="top"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a30ef3f1f4aa7a57fe6fcf6b217725161">pa_timeval_diff</a> (const struct timeval *a, const struct timeval *b) <a class="el" href="gccmacro_8h.html#aa1c5f50faa1073e28ba469b86f6a0548">PA_GCC_PURE</a></td></tr>
<tr class="memdesc:a30ef3f1f4aa7a57fe6fcf6b217725161"><td class="mdescLeft"> </td><td class="mdescRight">Calculate the difference between the two specified timeval structs. <a href="#a30ef3f1f4aa7a57fe6fcf6b217725161">More...</a><br/></td></tr>
<tr class="separator:a30ef3f1f4aa7a57fe6fcf6b217725161"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:adda5cdd65f7d07a457849d230c8ed066"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#adda5cdd65f7d07a457849d230c8ed066">pa_timeval_cmp</a> (const struct timeval *a, const struct timeval *b) <a class="el" href="gccmacro_8h.html#aa1c5f50faa1073e28ba469b86f6a0548">PA_GCC_PURE</a></td></tr>
<tr class="memdesc:adda5cdd65f7d07a457849d230c8ed066"><td class="mdescLeft"> </td><td class="mdescRight">Compare the two timeval structs and return 0 when equal, negative when a < b, positive otherwise. <a href="#adda5cdd65f7d07a457849d230c8ed066">More...</a><br/></td></tr>
<tr class="separator:adda5cdd65f7d07a457849d230c8ed066"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8d9a66f93e843d5e777eae6363b3aafc"><td class="memItemLeft" align="right" valign="top"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a8d9a66f93e843d5e777eae6363b3aafc">pa_timeval_age</a> (const struct timeval *tv)</td></tr>
<tr class="memdesc:a8d9a66f93e843d5e777eae6363b3aafc"><td class="mdescLeft"> </td><td class="mdescRight">Return the time difference between now and the specified timestamp. <a href="#a8d9a66f93e843d5e777eae6363b3aafc">More...</a><br/></td></tr>
<tr class="separator:a8d9a66f93e843d5e777eae6363b3aafc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a43743ff9b5891b03b8b83091b89d0fbe"><td class="memItemLeft" align="right" valign="top">struct timeval * </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a43743ff9b5891b03b8b83091b89d0fbe">pa_timeval_add</a> (struct timeval *tv, <a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> v)</td></tr>
<tr class="memdesc:a43743ff9b5891b03b8b83091b89d0fbe"><td class="mdescLeft"> </td><td class="mdescRight">Add the specified time in microseconds to the specified timeval structure. <a href="#a43743ff9b5891b03b8b83091b89d0fbe">More...</a><br/></td></tr>
<tr class="separator:a43743ff9b5891b03b8b83091b89d0fbe"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aef2c91e9cc3f5e819e94b0b47eec008d"><td class="memItemLeft" align="right" valign="top">struct timeval * </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#aef2c91e9cc3f5e819e94b0b47eec008d">pa_timeval_sub</a> (struct timeval *tv, <a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> v)</td></tr>
<tr class="memdesc:aef2c91e9cc3f5e819e94b0b47eec008d"><td class="mdescLeft"> </td><td class="mdescRight">Subtract the specified time in microseconds to the specified timeval structure. <a href="#aef2c91e9cc3f5e819e94b0b47eec008d">More...</a><br/></td></tr>
<tr class="separator:aef2c91e9cc3f5e819e94b0b47eec008d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af57d5b7c72056fb96737394952f13ba1"><td class="memItemLeft" align="right" valign="top">struct timeval * </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#af57d5b7c72056fb96737394952f13ba1">pa_timeval_store</a> (struct timeval *tv, <a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> v)</td></tr>
<tr class="memdesc:af57d5b7c72056fb96737394952f13ba1"><td class="mdescLeft"> </td><td class="mdescRight">Store the specified usec value in the timeval struct. <a href="#af57d5b7c72056fb96737394952f13ba1">More...</a><br/></td></tr>
<tr class="separator:af57d5b7c72056fb96737394952f13ba1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4ad23ae783a93d0da964b2e026f54dc2"><td class="memItemLeft" align="right" valign="top"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="timeval_8h.html#a4ad23ae783a93d0da964b2e026f54dc2">pa_timeval_load</a> (const struct timeval *tv)</td></tr>
<tr class="memdesc:a4ad23ae783a93d0da964b2e026f54dc2"><td class="mdescLeft"> </td><td class="mdescRight">Load the specified tv value and return it in usec. <a href="#a4ad23ae783a93d0da964b2e026f54dc2">More...</a><br/></td></tr>
<tr class="separator:a4ad23ae783a93d0da964b2e026f54dc2"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Utility functions for handling timeval calculations. </p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="adc226d28cef9e36fca56c355a03903f5"></a>
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<td class="memname">#define PA_MSEC_PER_SEC   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) 1000ULL)</td>
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</div><div class="memdoc">
<p>The number of milliseconds in a second. </p>
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</div>
<a class="anchor" id="aaddb92588f282c06ac13d3d9530ff604"></a>
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<td class="memname">#define PA_NSEC_PER_MSEC   ((unsigned long long) 1000000ULL)</td>
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</div><div class="memdoc">
<p>The number of nanoseconds in a millisecond. </p>
</div>
</div>
<a class="anchor" id="a98cd21cdaba8d04b078ad3f4e8139a11"></a>
<div class="memitem">
<div class="memproto">
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<td class="memname">#define PA_NSEC_PER_SEC   ((unsigned long long) 1000000000ULL)</td>
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</div><div class="memdoc">
<p>The number of nanoseconds in a second. </p>
</div>
</div>
<a class="anchor" id="acfb6c27ac89618aa980b30f2724263ac"></a>
<div class="memitem">
<div class="memproto">
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<td class="memname">#define PA_NSEC_PER_USEC   ((unsigned long long) 1000ULL)</td>
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<p>The number of nanoseconds in a microsecond. </p>
</div>
</div>
<a class="anchor" id="af0ac47427f9d7fa796ab9bdaa96db1ca"></a>
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<div class="memproto">
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<td class="memname">#define PA_USEC_INVALID   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) -1)</td>
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</div><div class="memdoc">
<p>Invalid time in usec. </p>
<dl class="section since"><dt>Since</dt><dd>0.9.15 </dd></dl>
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<a class="anchor" id="ad127de6077e6f8a0288099368fb91762"></a>
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<div class="memproto">
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<td class="memname">#define PA_USEC_MAX   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) -2)</td>
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<p>Biggest time in usec. </p>
<dl class="section since"><dt>Since</dt><dd>0.9.18 </dd></dl>
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<a class="anchor" id="a13ded4b857d4148545f7e59022700a95"></a>
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<td class="memname">#define PA_USEC_PER_MSEC   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) 1000ULL)</td>
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</div><div class="memdoc">
<p>The number of microseconds in a millisecond. </p>
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</div>
<a class="anchor" id="a65605026fb393422df650916ef7e3e32"></a>
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<td class="memname">#define PA_USEC_PER_SEC   ((<a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a>) 1000000ULL)</td>
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<p>The number of microseconds in a second. </p>
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<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="a6b172af60031b694582956e8b4ed6785"></a>
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<td class="memname">struct timeval* pa_gettimeofday </td>
<td>(</td>
<td class="paramtype">struct timeval * </td>
<td class="paramname"><em>tv</em></td><td>)</td>
<td></td>
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</div><div class="memdoc">
<p>Return the current wallclock timestamp, just like UNIX gettimeofday(). </p>
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</div>
<a class="anchor" id="a43743ff9b5891b03b8b83091b89d0fbe"></a>
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<td class="memname">struct timeval* pa_timeval_add </td>
<td>(</td>
<td class="paramtype">struct timeval * </td>
<td class="paramname"><em>tv</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> </td>
<td class="paramname"><em>v</em> </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Add the specified time in microseconds to the specified timeval structure. </p>
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</div>
<a class="anchor" id="a8d9a66f93e843d5e777eae6363b3aafc"></a>
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<td class="memname"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> pa_timeval_age </td>
<td>(</td>
<td class="paramtype">const struct timeval * </td>
<td class="paramname"><em>tv</em></td><td>)</td>
<td></td>
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<p>Return the time difference between now and the specified timestamp. </p>
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<td class="memname">int pa_timeval_cmp </td>
<td>(</td>
<td class="paramtype">const struct timeval * </td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramtype">const struct timeval * </td>
<td class="paramname"><em>b</em> </td>
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<p>Compare the two timeval structs and return 0 when equal, negative when a < b, positive otherwise. </p>
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<td class="memname"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> pa_timeval_diff </td>
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<td class="paramtype">const struct timeval * </td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramname"><em>b</em> </td>
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<p>Calculate the difference between the two specified timeval structs. </p>
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<td class="memname"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> pa_timeval_load </td>
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<td class="paramtype">const struct timeval * </td>
<td class="paramname"><em>tv</em></td><td>)</td>
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<p>Load the specified tv value and return it in usec. </p>
<dl class="section since"><dt>Since</dt><dd>0.9.7 </dd></dl>
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<td class="memname">struct timeval* pa_timeval_store </td>
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<td class="paramtype">struct timeval * </td>
<td class="paramname"><em>tv</em>, </td>
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<td class="paramtype"><a class="el" href="sample_8h.html#a885df3b973773f0dccbbec6bc6777f89">pa_usec_t</a> </td>
<td class="paramname"><em>v</em> </td>
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<p>Store the specified usec value in the timeval struct. </p>
<dl class="section since"><dt>Since</dt><dd>0.9.7 </dd></dl>
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<td class="memname">struct timeval* pa_timeval_sub </td>
<td>(</td>
<td class="paramtype">struct timeval * </td>
<td class="paramname"><em>tv</em>, </td>
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<td class="paramname"><em>v</em> </td>
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<p>Subtract the specified time in microseconds to the specified timeval structure. </p>
<dl class="section since"><dt>Since</dt><dd>0.9.11 </dd></dl>
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