Modify or examine a thread's signal-blocked mask
#include <signal.h> int pthread_sigmask( int how, const sigset_t* set, sigset_t* oset );
This argument is ignored if set is NULL.
You can use various combinations of set and oset to query or change (or both) the signal-blocked mask for a signal.
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The pthread_sigmask() function is used to examine or change (or both) the calling thread's signal mask. If set is non-NULL, the thread's signal mask is set to set. If oset is non-NULL, the thread's old signal mask is returned in oset.
You can't block the SIGKILL and SIGSTOP signals.
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |