libexplain/wait4_or_die.c File Reference

#include <libexplain/output.h>
#include <libexplain/wait4.h>

Go to the source code of this file.

Functions
int	explain_wait4_or_die (int pid, int *status, int options, struct rusage *rusage)

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Function Documentation

int explain_wait4_or_die	(	int	pid,
		int *	status,
		int	options,
		struct rusage *	rusage
	)

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 the explain_wait4(3) function, 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:

 pid_t pid = explain_wait4_or_die(pid, status, options, rusage);

Parameters:

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. On failure, prints an explanation and exits, it does not return.

Definition at line 24 of file wait4_or_die.c.