Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

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>sem_get</H1
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><P
>    (PHP 3&#62;= 3.0.6, PHP 4 )</P
>sem_get&nbsp;--&nbsp;Get a semaphore id</DIV
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><H2
>Description</H2
>int <B
CLASS="methodname"
>sem_get</B
> ( int key [, int max_acquire [, int perm]])<BR
></BR
><P
>&#13;     Returns: A positive semaphore identifier on success, or <TT
CLASS="constant"
><B
>FALSE</B
></TT
> on
     error.
    </P
><P
>&#13;     <B
CLASS="function"
>sem_get()</B
> returns an id that can be used to
     access the System V semaphore with the given key.  The semaphore
     is created if necessary using the permission bits specified in
     perm (defaults to 0666).  The number of processes that can
     acquire the semaphore simultaneously is set to max_acquire
     (defaults to 1).  Actually this value is set only if the process
     finds it is the only process currently attached to the semaphore.
    </P
><P
>&#13;     A second call to <B
CLASS="function"
>sem_get()</B
> for the same key
     will return a different semaphore identifier, but both
     identifiers access the same underlying semaphore.
    </P
><P
> 
     See also: <A
HREF="function.sem-acquire.html"
><B
CLASS="function"
>sem_acquire()</B
></A
>,
     <A
HREF="function.sem-release.html"
><B
CLASS="function"
>sem_release()</B
></A
> and <A
HREF="function.ftok.html"
><B
CLASS="function"
>ftok()</B
></A
>.
    </P
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><B
>Note: </B
>
      This function does not work on Windows systems.
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