1 .\" Copyright (c) 1996 John Birrell <jb@cimlogic.com.au>.
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
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12 .\" 3. All advertising materials mentioning features or use of this software
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14 .\" This product includes software developed by John Birrell.
15 .\" 4. Neither the name of the author nor the names of any co-contributors
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19 .\" THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
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31 .\" $FreeBSD: src/share/man/man3/pthread_key_delete.3,v 1.16 2007/10/22 10:08:00 ru Exp $
32 .\" $DragonFly: src/lib/libc_r/man/pthread_key_delete.3,v 1.2 2003/06/17 04:26:48 dillon Exp $
35 .Dt PTHREAD_KEY_DELETE 3
38 .Nm pthread_key_delete
39 .Nd delete a thread-specific data key
45 .Fn pthread_key_delete "pthread_key_t key"
48 .Fn pthread_key_delete
49 function deletes a thread-specific data key previously returned by
50 .Fn pthread_key_create .
51 The thread-specific data values associated with
53 need not be NULL at the time that
54 .Fn pthread_key_delete
56 It is the responsibility of the application to free any
57 application storage or perform any cleanup actions for data structures
58 related to the deleted key or associated thread-specific data in any threads;
59 this cleanup can be done either before or after
60 .Fn pthread_key_delete
65 .Fn pthread_key_delete
66 results in undefined behavior.
69 .Fn pthread_key_delete
70 function is callable from within destructor functions.
73 .Fn pthread_key_delete .
74 Any destructor function that may have been associated with
76 will no longer be called upon thread exit.
79 .Fn pthread_key_delete
80 function will return zero.
81 Otherwise an error number will be returned to
85 .Fn pthread_key_delete
86 function will fail if:
94 .Xr pthread_getspecific 3 ,
95 .Xr pthread_key_create 3 ,
96 .Xr pthread_setspecific 3
99 .Fn pthread_key_delete