unistd.h.html

posix标准英文,html格式

or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_SHARED_MEMORY_OBJECTS</dt>

<dd><sup>[<a href="javascript:open_code('SHM')">SHM</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Shared Memory Objects option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_SHELL</dt>

<dd>
The implementation supports the POSIX shell. This symbol shall always be set to a value greater than zero.</dd>

<dt>_POSIX_SPAWN</dt>

<dd><sup>[<a href="javascript:open_code('SPN')">SPN</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Spawn option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be -1,
0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_SPIN_LOCKS</dt>

<dd><sup>[<a href="javascript:open_code('SPI')">SPI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Spin Locks option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be
-1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1
or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_SPORADIC_SERVER</dt>

<dd><sup>[<a href="javascript:open_code('SS')">SS</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Process Sporadic Server option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_SYNCHRONIZED_IO</dt>

<dd><sup>[<a href="javascript:open_code('SIO')">SIO</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Synchronized Input and Output option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it
shall be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href=
"../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></dd>

<dt>_POSIX_THREAD_ATTR_STACKADDR</dt>

<dd><sup>[<a href="javascript:open_code('TSA')">TSA</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Stack Address Attribute option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it
shall be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href=
"../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></dd>

<dt>_POSIX_THREAD_ATTR_STACKSIZE</dt>

<dd><sup>[<a href="javascript:open_code('TSS')">TSS</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Stack Size Attribute option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall
be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_CPUTIME</dt>

<dd><sup>[<a href="javascript:open_code('TCT')">TCT</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread CPU-Time Clocks option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PRIO_INHERIT</dt>

<dd><sup>[<a href="javascript:open_code('TPI')">TPI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Priority Inheritance option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall
be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PRIO_PROTECT</dt>

<dd><sup>[<a href="javascript:open_code('TPP')">TPP</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Priority Protection option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall
be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PRIORITY_SCHEDULING</dt>

<dd><sup>[<a href="javascript:open_code('TPS')">TPS</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Execution Scheduling option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall
be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PROCESS_SHARED</dt>

<dd><sup>[<a href="javascript:open_code('TSH')">TSH</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Process-Shared Synchronization option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>,
it shall be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href=
"../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></dd>

<dt>_POSIX_THREAD_SAFE_FUNCTIONS</dt>

<dd><sup>[<a href="javascript:open_code('TSF')">TSF</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread-Safe Functions option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_SPORADIC_SERVER</dt>

<dd><sup>[<a href="javascript:open_code('TSP')">TSP</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Sporadic Server option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREADS</dt>

<dd><sup>[<a href="javascript:open_code('THR')">THR</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Threads option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be -1,
0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TIMEOUTS</dt>

<dd><sup>[<a href="javascript:open_code('TMO')">TMO</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Timeouts option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be
-1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1
or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TIMERS</dt>

<dd><sup>[<a href="javascript:open_code('TMR')">TMR</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Timers option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be -1,
0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE</dt>

<dd><sup>[<a href="javascript:open_code('TRC')">TRC</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be -1,
0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE_EVENT_FILTER</dt>

<dd><sup>[<a href="javascript:open_code('TEF')">TEF</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace Event Filter option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE_INHERIT</dt>

<dd><sup>[<a href="javascript:open_code('TRI')">TRI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace Inherit option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to
be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be
-1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE_LOG</dt>

<dd><sup>[<a href="javascript:open_code('TRL')">TRL</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace Log option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be
-1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1
or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TYPED_MEMORY_OBJECTS</dt>

<dd><sup>[<a href="javascript:open_code('TYM')">TYM</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Typed Memory Objects option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_VDISABLE</dt>

<dd>
This symbol shall be defined to be the value of a character that shall disable terminal special character handling as described in
<a href="termios.h.html"><i>&lt;termios.h&gt;</i></a>. This symbol shall always be set to a value other than -1.</dd>

<dt>_POSIX2_C_BIND</dt>

<dd>
The implementation supports the C-Language Binding option. This symbol shall always have the value 200112L.</dd>

<dt>_POSIX2_C_DEV</dt>

<dd><sup>[<a href="javascript:open_code('CD')">CD</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the C-Language Development Utilities option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it
shall be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href=
"../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></dd>

<dt>_POSIX2_CHAR_TERM</dt>

<dd>
The implementation supports at least one terminal type.</dd>

<dt>_POSIX2_FORT_DEV</dt>

<dd><sup>[<a href="javascript:open_code('FD')">FD</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the FORTRAN Development Utilities option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it
shall be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href=
"../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></dd>

<dt>_POSIX2_FORT_RUN</dt>

<dd><sup>[<a href="javascript:open_code('FR')">FR</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the FORTRAN Runtime Utilities option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_LOCALEDEF</dt>

<dd>
The implementation supports the creation of locales by the <a href="../utilities/localedef.html"><i>localedef</i></a> utility. If
this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined to be -1, 0, or 200112L. The value of this symbol reported
by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or 200112L.</dd>

<dt>_POSIX2_PBS</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Environment Services and Utilities option. If this symbol is defined in
<i>&lt;unistd.h&gt;</i>, it shall be defined to be -1, 0, or 200112L. The value of this symbol reported by <a href=
"../functions/sysconf.html"><i>sysconf</i>()</a> shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></dd>

<dt>_POSIX2_PBS_ACCOUNTING</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Accounting option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be defined
to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a> shall either
be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_CHECKPOINT</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Checkpoint/Restart option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_LOCATE</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Locate Batch Job Request option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_MESSAGE</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Job Message Request option. If this symbol is defined in <i>&lt;unistd.h&gt;</i>, it shall be
defined to be -1, 0, or 200112L. The value of this symbol reported by <a href="../functions/sysconf.html"><i>sysconf</i>()</a>
shall either be -1 or 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>