HP-UX Reference (11i v2 03/08) - 3 Library Functions N-Z (vol 7)

pthread_mutex_init(3T) pthread_mutex_init(3T)

(Pthread Library)

[EINVAL] The value speciﬁed by mutex or attr is invalid.

[EBUSY] mutex is an already initialized mutex.

[EFAULT] mutex parameter points to an illegal address.

For each of the following conditions, if the condition is detected, the

pthread_mutex_destroy()

function returns the corresponding error number:

[EINVAL] mutex is not a valid mutex.

[EBUSY] mutex is currently locked or in use by another thread.

WARNINGS

The space for the mutex must be allocated before calling

pthread_mutex_init()

. Undeﬁned

behavior will result if the process-shared attribute of attr is

PTHREAD_PROCESS_SHARED

and the space

allocated for the mutex is not accessible to cooperating threads.

AUTHOR

pthread_mutex_init()

and pthread_mutex_destroy()

were derived from the IEEE POSIX

P1003.1c standard.