Node:Blocking in BSD, Previous:BSD Handler, Up:BSD Signal Handling
int sigmask (int signum) | Macro |
This macro returns a signal mask that has the bit for signal signum
set. You can bitwise-OR the results of several calls to sigmask
together to specify more than one signal. For example,
(sigmask (SIGTSTP) | sigmask (SIGSTOP) | sigmask (SIGTTIN) | sigmask (SIGTTOU)) specifies a mask that includes all the job-control stop signals. |
int sigblock (int mask) | Function |
This function is equivalent to sigprocmask (see Process Signal Mask) with a how argument of SIG_BLOCK : it adds the
signals specified by mask to the calling process's set of blocked
signals. The return value is the previous set of blocked signals.
|
int sigsetmask (int mask) | Function |
This function equivalent to sigprocmask (see Process Signal Mask) with a how argument of SIG_SETMASK : it sets
the calling process's signal mask to mask. The return value is
the previous set of blocked signals.
|
int sigpause (int mask) | Function |
This function is the equivalent of sigsuspend (see Waiting for a Signal): it sets the calling process's signal mask to mask,
and waits for a signal to arrive. On return the previous set of blocked
signals is restored.
|