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| explain_wait4_or_die(3) | FreeBSD Library Functions Manual | explain_wait4_or_die(3) |
NAME
explain_wait4_or_die - wait for process to change state and report errorsSYNOPSIS
#include <libexplain/wait4.h>void explain_wait4_or_die(int pid, int *status, int options, struct rusage *rusage);
DESCRIPTION
The explain_wait4_or_die function is used to call the wait4(2) system call. On failure an explanation will be printed to stderr, obtained from explain_wait4(3), and then the process terminates by calling exit(EXIT_FAILURE).This function is intended to be used in a fashion similar to the following example:
explain_wait4_or_die(pid, status, options, rusage);
- pid
- The pid, exactly as to be passed to the wait4(2) system call.
- status
- The status, exactly as to be passed to the wait4(2) system call.
- options
- The options, exactly as to be passed to the wait4(2) system call.
- rusage
- The rusage, exactly as to be passed to the wait4(2) system call.
- Returns:
- This function only returns on success, see wait4(2) for more information. On failure, prints an explanation and exits.
SEE ALSO
- wait4(2)
- wait for process to change state
- explain_wait4(3)
- explain wait4(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2008 Peter Miller
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