wait.h man page on SmartOS

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WAIT.H(3HEAD)							 WAIT.H(3HEAD)

NAME
       wait.h, wait - wait status

SYNOPSIS
       #include <sys/wait.h>

DESCRIPTION
       When  a	process	 waits	for  status from its children using either the
       wait(3C) or waitpid(3C) function, the status returned can be  evaluated
       with the following macros, defined in <sys/wait.h>. These macros evalu‐
       ate to integral expressions. The stat argument to these macros  is  the
       integer value returned from wait() or waitpid().

       WCOREDUMP(stat)
			     If	 the  value of WIFSIGNALED (stat) is non-zero,
			     this macro evaluates to a	non-zero  value	 if  a
			     core image of the terminated child was created.

       WEXITSTATUS(stat)
			     If	 the  value  of	  WIFEXITED(stat) is non-zero,
			     this macro evaluates to the exit  code  that  the
			     child process passed to  _exit() (see exit(2)) or
			     exit(3C), or the value  that  the	child  process
			     returned from main.

       WIFCONTINUED(stat)
			     Evaluates	to  a  non-zero	 value	if  status was
			     returned for a child process that has continued.

       WIFEXITED(stat)
			     Evaluates to  a  non-zero	value  if  status  was
			     returned for a child process that terminated nor‐
			     mally.

       WIFSIGNALED(stat)
			     Evaluates to  a  non-zero	value  if  status  was
			     returned  for a child process that terminated due
			     to the receipt of a signal.

       WIFSTOPPED(stat)
			     Evaluates to  a  non-zero	value  if  status  was
			     returned  for  a  child process that is currently
			     stopped.

       WSTOPSIG(stat)
			     If the value  of  WIFSTOPPED(stat)	 is  non-zero,
			     this  macro evaluates to the number of the signal
			     that caused the child process to stop.

       WTERMSIG(stat)
			     If the value of  WIFSIGNALED(stat)	 is  non-zero,
			     this  macro evaluates to the number of the signal
			     that caused the termination of the child process.

       The <sys/wait.h> header defines the symbolic constants listed below for
       use with waitpid(3C).

       WNOHANG
		    Do not hang if no status is available; return immediately.

       WUNTRACED
		    Report status of stopped child process.

       The  symbolic constants listed below are defined as possible values for
       the options argument to waitid(2).

       WEXITED
		     Wait for processes that have exited.

       WSTOPPED
		     Status is returned for any child that  has	 stopped  upon
		     receipt of a signal.

       WCONTINUED
		     Status is returned for any child that was stopped and has
		     been continued.

       WNOHANG
		     Return immediately if there are no children to wait for.

       WNOWAIT
		     Keep the process whose status is returned in infop	 in  a
		     waitable state.

       The type idtype_t is defined as an enumeration type whose possible val‐
       ues include the following:

	 P_ALL
	 P_PID
	 P_PGID

       The id_t and pid_t types are defined as described in <sys/types.h>.

       The siginfo_t type is defined as described in <signal.h>.

       The rusage structure is defined as described in <sys/resource.h>.

       Inclusion of the <sys/wait.h> header can also make visible all  symbols
       from <signal.h> and <sys/resource.h>.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌────────────────────┬─────────────────┐
       │  ATTRIBUTE TYPE    │ ATTRIBUTE VALUE │
       ├────────────────────┼─────────────────┤
       │Interface Stability │ Standard	      │
       └────────────────────┴─────────────────┘

SEE ALSO
       exit(2),	  waitid(2),  exit(3C),	 wait(3C),  waitpid(3C),attributes(5),
       standards(5)

				 Sep 10, 2004			 WAIT.H(3HEAD)
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