Unix Programming FAQ How can I sleep for less than a second? []

Unix Programming FAQ How can I get a finer-grained version of alarm()? []

Unix Programming FAQ Given a pid, how can I tell if it's a running program? []

Unix Programming FAQ Why doesn't my process get SIGHUP when its parent dies? []

Unix Programming FAQ Example: Catching SIGCHLD []

Realtime Signal Processing for Unix? [2001/10/30]

Why do my signal-using programs "lose" signals? [ 1999/07/01]

Are there any good on-line references for PC interrupts? []

What and where is "Ralf Brown's interrupt list"? []

Why does my interrupt function behave strangely? []

Questions and Answers

sleep(1) - suspend execution for an interval of time {oss}

pslist-1.0 - A utility to view or send signals to processes with all their children

bsdproxy-0.03 - A TCP proxy, demonstrating use of the kevent(2)/kqueue(2) API

py-kqueue-1.3_1 - Python interface to kqueue(2) and kevent(2) system calls

Applications and Utilities

vfork (2) - spawn new process and block parent {oss}

wait waitpid wait4 wait3 (2) - wait for process termination {oss}

raise (3) - send a signal to the current process {oss}

kill (2) - send signal to a process {oss}

killpg (3) - send signal to a process group {oss}

semctl (2) - semaphore control operations {oss}

semget (2) - get semaphore set {oss}

semop (2) - semaphore operations {oss}

sleep (3) - suspend process execution for interval of seconds {oss}

usleep (3) - suspend execution for interval of microseconds {oss}

nanosleep (2) - suspend process execution for interval of nanoseconds {oss}

getitimer setitimer (2) - get/set value of interval timer {oss}

alarm (3) - set signal timer alarm {oss}

ualarm (3) - schedule signal after specified time {oss}

psignal sys_siglist sys_signame (3) - system signal messages {oss}

strsignal (3) - get signal description string {oss}

sigemptyset sigfillset sigaddset sigdelset sigismember (3) - manipulate signal sets {oss}

sigblock (3) - block signals {oss}

siginterrupt (3) - allow signals to interrupt system calls {oss}

signal (3) - simplified software signal facilities {oss}

sigpause (3) - atomically release blocked signals and wait for interrupt {oss}

sigsetmask (3) - set current signal mask {oss}

sigvec (3) - software signal facilities {oss}

sigaction (2) - software signal facilities {oss}

sigaltstack (2) - set and/or get signal stack context {oss}

sigpending (2) - get pending signals {oss}

sigprocmask (2) - manipulate current signal mask {oss}

sigreturn (2) - return from signal {oss}

sigstack (2) - set and/or get signal stack context {oss}

sigsuspend (2) - atomically release blocked signals and wait for interrupt {oss}

mod_trigger-1.0 - Apache module to launch triggers if certain actions occur

liboop-0.8 - A low-level event loop management library for POSIX-based OS

p5-Time-HiRes-01.20 - A perl5 module implementing High resolution time, sleep, and alarm

p5-Religion-1.04 - Perl5 module to install die() and warn() handlers

Break.C - Control DOS "SET BREAK=" status {oss,msdos}

Except.Doc, Cctrap.asm, Cbtrap.asm - Bob Stout's Portable PC exception handling (MSDOS), Ctrl-C trap, Ctrl-Break trap, install error handlers {oss,msdos}

sigtrap - Simple signal handling: trap those pesky CTRL-C's. The sigtrap pragma (it's not a module) is bundled with Perl. {oss,perl}

Sys::AlarmCall - Lets you manage alarm() and the ALRM handler a bit better than you could otherwise, and lets you handle nested alarm calls. See alarm(), described in ./docs/manual/html/perlfunc.html. [Perl] {oss}

IPC::Signal - Utilities for coping with operating system signals. [Perl] {oss}

Libraries and Functions

(The following links to subjects at this site retain your personalized selections.)

Process Creation and Control - covers child process control (like sending signals), renice, fork, et al

Up to Execution