pthread_setcancelstate()

Set a thread's cancellation state

Synopsis:

#include <pthread.h>

int pthread_setcancelstate( int state,
                            int* oldstate );

Arguments:

state: The new cancellation state.
oldstate: A pointer to a location where the function can store the old cancellation state.

Library:

libc

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

Description:

The pthread_setcancelstate() function sets the calling thread's cancellation state to state and returns the previous cancellation state in oldstate.

The cancellation state can have the following values:

PTHREAD_CANCEL_DISABLE: Cancellation requests are held pending.
PTHREAD_CANCEL_ENABLE: Cancellation requests may be acted on according to the cancellation type; see pthread_setcanceltype().

The default cancellation state for a thread is PTHREAD_CANCEL_ENABLE.

You can set this attribute (in a non-POSIX way) before creating the thread; for more information, see “QNX extensions,” in the documentation for pthread_create().

Returns:

EOK: Success.
EINVAL: The cancellation state specified by state is invalid.

Classification:

POSIX 1003.1 THR

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