Signal-Handling Functions

Signal Descriptions

This section provides a detailed description of each signal that can be handled by the SAS/C library, with the exception of SIGIO . (The SIGIO signal is not included because it currently has no special meaning for the SAS/C library.) Each description explains the information returned by a call to siginfo when a signal is generated naturally. When your program raises a signal by calling the raise function, a call to siginfo returns NULL except where noted otherwise. If the program raises a signal by calling siggen , siginfo returns the value of the second argument to siggen .

Note: The POSIX signals ( SIGCHLD , SIGCONT , SIGHUP , SIGKILL , SIGPIPE , SIGQUIT , SIGSTOP , SIGTSTP , SIGTTIN , and SIGTTOU ) are not included in this section because all pertinent information about them is contained in Summary of Default Actions and Summary of Ignoring Signals, respectively. For general information about POSIX signal handling, refer to The POSIX.1 Standard: A Programmer's Guide. [cautionend]