pthread_getspecific()

Get a thread-specific data value

Synopsis:

#include <pthread.h>

void* pthread_getspecific( pthread_key_t key );

Arguments:

key
The key associated with the data that you want to get. See pthread_key_create() .

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The pthread_getspecific() function returns the thread-specific data value currently bound to the thread-specific-data key key in the calling thread, or NULL if no value is bound or the key doesn't exist. You can call this function from a thread-specific-data destructor function.

You must call this function with a key that you got from pthread_key_create(). You can't use a key after destroying it with pthread_key_delete() .

Returns:

The data value, or NULL.

Examples:

See pthread_key_create() .

Classification:

POSIX 1003.1 THR

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes

Last modified: 2013-12-23

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