explain_wait4_or_die3
Wait for process to change state and report errors
Usage
#include <libexplain/wait4.h>
void explain_wait4_or_die(int pid, int *status, int options, struct rusage *rusage);
Overview
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.
Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.