# Constantes predefinidas

The following list of signals are supported by the Process Control functions. Please see your systems signal(7) man page for details of the default behavior of these signals.

Process Control constants
`WNOHANG` (int)
`WUNTRACED` (int)

SIG_* constants
`SIG_IGN` (int)
`SIG_DFL` (int)
`SIG_ERR` (int)
`SIGHUP` (int)
`SIGINFO` (int)
`SIGINT` (int)
`SIGQUIT` (int)
`SIGILL` (int)
`SIGTRAP` (int)
`SIGABRT` (int)
`SIGIOT` (int)
`SIGBUS` (int)
`SIGFPE` (int)
`SIGKILL` (int)
`SIGUSR1` (int)
`SIGSEGV` (int)
`SIGUSR2` (int)
`SIGPIPE` (int)
`SIGALRM` (int)
`SIGTERM` (int)
`SIGSTKFLT` (int)
`SIGCLD` (int)
`SIGCHLD` (int)
`SIGCONT` (int)
`SIGSTOP` (int)
`SIGTSTP` (int)
`SIGTTIN` (int)
`SIGTTOU` (int)
`SIGURG` (int)
`SIGXCPU` (int)
`SIGXFSZ` (int)
`SIGVTALRM` (int)
`SIGPROF` (int)
`SIGWINCH` (int)
`SIGPOLL` (int)
`SIGIO` (int)
`SIGPWR` (int)
`SIGSYS` (int)
`SIGBABY` (int)
`SIG_BLOCK` (int)
`SIG_UNBLOCK` (int)
`SIG_SETMASK` (int)

SI_* constants
`SI_USER` (int)
`SI_NOINFO` (int)
`SI_KERNEL` (int)
`SI_QUEUE` (int)
`SI_TIMER` (int)
`SI_MSGGQ` (int)
`SI_ASYNCIO` (int)
`SI_SIGIO` (int)
`SI_TKILL` (int)

CLD_* constants
`CLD_EXITED` (int)
`CLD_KILLED` (int)
`CLD_DUMPED` (int)
`CLD_TRAPPED` (int)
`CLD_STOPPED` (int)
`CLD_CONTINUED` (int)

TRAP_* constants
`TRAP_BRKPT` (int)
`TRAP_TRACE` (int)

POLL_* constants
`POLL_IN` (int)
`POLL_OUT` (int)
`POLL_MSG` (int)
`POLL_ERR` (int)
`POLL_PRI` (int)
`POLL_HUP` (int)

ILL_* constants
`ILL_ILLOPC` (int)
`ILL_ILLOPN` (int)
`ILL_ILLADR` (int)
`ILL_ILLTRP` (int)
`ILL_PRVOPC` (int)
`ILL_PRVREG` (int)
`ILL_COPROC` (int)
`ILL_BADSTK` (int)

FPE_* constants
`FPE_INTDIV` (int)
`FPE_INTOVF` (int)
`FPE_FLTDIV` (int)
`FPE_FLTOVF` (int)
`FPE_FLTUND` (int)
`FPE_FLTRES` (int)
`FPE_FLTINV` (int)
`FPE_FLTSUB` (int)

SEGV_* constants
`SEGV_MAPERR` (int)
`SEGV_ACCERR` (int)

BUS_* constants
`BUS_ADRALN` (int)
`BUS_ADRERR` (int)
`BUS_OBJERR` (int)

CLONE_* constants
`CLONE_NEWNS` (int)
  Available as of PHP 7.4.0
`CLONE_NEWIPC` (int)
  Available as of PHP 7.4.0
`CLONE_NEWUTS` (int)
  Available as of PHP 7.4.0
`CLONE_NEWNET` (int)
  Available as of PHP 7.4.0
`CLONE_NEWPID` (int)
  Available as of PHP 7.4.0
`CLONE_NEWUSER` (int)
  Available as of PHP 7.4.0
`CLONE_NEWCGROUP` (int)
  Available as of PHP 7.4.0

PRIO_* constants
`PRIO_PGRP` (int)
`PRIO_USER` (int)
`PRIO_PROCESS` (int)
`PRIO_DARWIN_BG` (int)
  Available as of PHP 8.1.0.
`PRIO_DARWIN_THREAD` (int)
  Available as of PHP 8.1.0.