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.
This parameter can be NULL if you don't want to store the old value.
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.
Note:
You can set this attribute (in a non-POSIX way) before creating the thread;
for more information, see
“QNX Neutrino extensions,”
in the documentation for
pthread_create().
Returns:
- EOK
- Success.
- EINVAL
- The cancellation state specified by state is invalid.
Classification:
POSIX 1003.1
| Safety: |
|
|---|
| Cancellation point |
No |
| Interrupt handler |
No |
| Signal handler |
Yes |
| Thread |
Yes |