Set the signal mask attribute of a spawn attributes object
#include <spawn.h>
int posix_spawnattr_setsigmask(
posix_spawnattr_t *_Restrict attrp,
const sigset_t *_Restrict sigset_p);
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The posix_spawnattr_setsigmask() function sets the signal mask attribute in an initialized attributes object referenced by attrp. You must have already initialized the spawn attributes object by calling posix_spawnattr_init().
The value of this attribute is used as the signal mask in the new process image of a spawn operation if POSIX_SPAWN_SETSIGMASK is set in the spawn flags attribute; to set this flag, call the POSIX function posix_spawnattr_setflags(), or the QNX Neutrino function posix_spawnattr_setxflags(). By default, the mask is an empty signal set.
To retrieve the current value of this attribute, call posix_spawnattr_getsigmask().
For more information about spawn attributes, see the entry for posix_spawn().
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | Yes |
| Signal handler | Yes |
| Thread | Yes |