/* Signals. */

define SIGHUP 1 /* Hangup (POSIX). */

define SIGINT 2 /* Interrupt (ANSI). */

define SIGQUIT 3 /* Quit (POSIX). */

define SIGILL 4 /* Illegal instruction (ANSI). */

define SIGTRAP 5 /* Trace trap (POSIX). */

define SIGABRT 6 /* Abort (ANSI). */

define SIGIOT 6 /* IOT trap (4.2 BSD). */

define SIGBUS 7 /* BUS error (4.2 BSD). */

define SIGFPE 8 /* Floating-point exception (ANSI). */

define SIGKILL 9 /* Kill, unblockable (POSIX). */

define SIGUSR1 10 /* User-defined signal 1 (POSIX). */

define SIGSEGV 11 /* Segmentation violation (ANSI). */

define SIGUSR2 12 /* User-defined signal 2 (POSIX). */

define SIGPIPE 13 /* Broken pipe (POSIX). */

define SIGALRM 14 /* Alarm clock (POSIX). */

define SIGTERM 15 /* Termination (ANSI). */

define SIGSTKFLT 16 /* Stack fault. */

define SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */

define SIGCHLD 17 /* Child status has changed (POSIX). */

define SIGCONT 18 /* Continue (POSIX). */

define SIGSTOP 19 /* Stop, unblockable (POSIX). */

define SIGTSTP 20 /* Keyboard stop (POSIX). */

define SIGTTIN 21 /* Background read from tty (POSIX). */

define SIGTTOU 22 /* Background write to tty (POSIX). */

define SIGURG 23 /* Urgent condition on socket (4.2 BSD). */

define SIGXCPU 24 /* CPU limit exceeded (4.2 BSD). */

define SIGXFSZ 25 /* File size limit exceeded (4.2 BSD). */

define SIGVTALRM 26 /* Virtual alarm clock (4.2 BSD). */

define SIGPROF 27 /* Profiling alarm clock (4.2 BSD). */

define SIGWINCH 28 /* Window size change (4.3 BSD, Sun). */

define SIGPOLL SIGIO /* Pollable event occurred (System V). */

define SIGIO 29 /* I/O now possible (4.2 BSD). */

define SIGPWR 30 /* Power failure restart (System V). */

define SIGSYS 31 /* Bad system call. */

define SIGUNUSED 31