Assigns mask to the current set of masked signals and then waits for a signal. Format #include <signal.h> int sigpause (int mask);
1 – Argument
mask The signals to be blocked.
2 – Description
See the sigblock function for information about the mask argument. When control returns to sigpause, the function restores the previous set of masked signals, sets errno to EINTR, and returns -1 to indicate an interrupt. The value EINTR is defined in the <errno.h> header file.
3 – Return Value
-1 Indicates an interrupt. errno is set to EINTR.