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
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34 .Dt PTHREAD_KEY_DELETE 3
37 .Nm pthread_key_delete
38 .Nd delete a thread-specific data key
40 .Fd #include <pthread.h>
42 .Fn pthread_key_delete "pthread_key_t key"
45 .Fn pthread_key_delete
46 function deletes a thread-specific data key previously returned by
47 .Fn pthread_key_create .
48 The thread-specific data values associated with
50 need not be NULL at the time that
51 .Fn pthread_key_delete
52 is called. It is the responsibility of the application to free any
53 application storage or perform any cleanup actions for data structures
54 related to the deleted key or associated thread-specific data in any threads;
55 this cleanup can be done either before or after
56 .Fn pthread_key_delete
57 is called. Any attempt to use
60 .Fn pthread_key_delete
61 results in undefined behavior.
64 .Fn pthread_key_delete
65 function is callable from within destructor functions. Destructor functions
67 .Fn pthread_key_delete .
68 Any destructor function that may have been associated with
70 will no longer be called upon thread exit.
73 .Fn pthread_key_delete
74 function will return zero. Otherwise an error number will be returned to
77 .Fn pthread_key_delete
87 .Xr pthread_getspecific 3 ,
88 .Xr pthread_key_create 3 ,
89 .Xr pthread_setspecific 3
91 .Fn pthread_key_delete
92 conforms to ISO/IEC 9945-1 ANSI/IEEE
94 Std 1003.1 Second Edition 1996-07-12.