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Man Pages


Manual Reference Pages  -  PTHREAD_GETSPECIFIC (3)

NAME

pthread_getspecific - get a thread-specific data value

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards

LIBRARY


.Lb libpthread

SYNOPSIS


.In pthread.h void * pthread_getspecific pthread_key_t key

DESCRIPTION

The pthread_getspecific function returns the value currently bound to the specified key on behalf of the calling thread.

The effect of calling pthread_getspecific with a key value not obtained from pthread_key_create or after key has been deleted with pthread_key_delete is undefined.

The pthread_getspecific function may be called from a thread-specific data destructor function. A call to pthread_getspecific for the thread-specific data key being destroyed returns the value NULL, unless the value is changed (after the destructor starts) by a call to pthread_setspecific.

RETURN VALUES

The pthread_getspecific function will return the thread-specific data value associated with the given key. If no thread-specific data value is associated with key, then the value NULL is returned.

ERRORS

None.

SEE ALSO

pthread_key_create(3), pthread_key_delete(3), pthread_setspecific(3)

STANDARDS

The pthread_getspecific function conforms to -p1003.1-96.
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