Copyright (c) 1996 John Birrell <jb@cimlogic.com.au>.
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$FreeBSD: src/lib/libc_r/man/pthread_key_delete.3,v 1.6.2.4 2001/08/17 15:42:51 ru Exp $

.Dd April 4, 1996 .Dt PTHREAD_KEY_DELETE 3 .Os .Sh NAME .Nm pthread_key_delete .Nd delete a thread-specific data key .Sh SYNOPSIS .Fd #include <pthread.h> .Ft int .Fo pthread_key_delete .Fa "pthread_key_t key" .Fc .Sh DESCRIPTION The .Fn pthread_key_delete function deletes a thread-specific data key, previously returned by .Fn pthread_key_create . The thread-specific data values associated with .Fa key need not be NULL at the time that .Fn pthread_key_delete is called. It is the responsibility of the application to free any application 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 .Fn pthread_key_delete is called. Any attempt to use .Fa key following the call to .Fn pthread_key_delete results in undefined behavior.

p The .Fn pthread_key_delete function is callable from within destructor functions. Destructor functions are not invoked by .Fn pthread_key_delete . Any destructor function that may have been associated with .Fa key will no longer be called upon thread exit. .Sh RETURN VALUES If successful, the .Fn pthread_key_delete function will return zero. Otherwise, an error number will be returned to indicate the error. .Sh ERRORS .Fn pthread_key_delete will fail if: l -tag -width Er t Bq Er EINVAL The .Fa key value is invalid. .El .Sh SEE ALSO .Xr pthread_getspecific 3 , .Xr pthread_key_create 3 , .Xr pthread_setspecific 3 .Sh STANDARDS .Fn pthread_key_delete conforms to .St -p1003.1-96 .