pthread_key_delete man page on DigitalUNIX

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pthread_key_delete(3)					 pthread_key_delete(3)

NAME
       pthread_key_delete - Deletes a thread-specific data key

SYNOPSIS
       #include <pthread.h>

       int pthread_key_delete(
	       pthread_key_t key );

LIBRARY
       DECthreads POSIX 1003.1c Library (libpthread.so)

STANDARDS
       Interfaces  documented on this reference page conform to industry stan‐
       dards as follows:

       IEEE Std 1003.1c-1995, POSIX System Application Program Interface

PARAMETERS
       Context key to be deleted.

DESCRIPTION
       This routine deletes the thread-specific data key specified by the  key
       argument,  which must have been previously returned by pthread_key_cre‐
       ate(3).

       The thread-specific data values associated with key need not be NULL at
       the time this routine is called. The application must free any applica‐
       tion storage or perform any cleanup actions for data structures related
       to  the	deleted key or associated thread-specific data in any threads.
       This cleanup can be done either before or after this routine is called.

       Do not attempt to use the key after calling this routine; this  results
       in unpredictable behavior.

       No  destructor  functions  are  invoked by this routine. Any destructor
       functions that may have been associated with key	 shall	no  longer  be
       called  upon  thread  exit.   pthread_key_delete(3)  can be called from
       within destructor functions.

RETURN VALUES
       If an error condition occurs, this routine  returns  an	integer	 value
       indicating  the	type  of error. Possible return values are as follows:
       Successful completion.  The key value is an invalid argument.

ERRORS
       None

SEE ALSO
       Functions:  pthread_exit(3),  pthread_getspecific(3),  pthread_key_cre‐
       ate(3)

       Manuals: Guide to DECthreads and Programmer's Guide

							 pthread_key_delete(3)
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