explain_waitpid_or_die(3)

wait for process to change state and report errors

Section 3 libexplain-dev bookworm source

Description

explain_waitpid_or_die

NAME

explain_waitpid_or_die - wait for process to change state and report errors

SYNOPSIS

#include <libexplain/waitpid.h>
int pid = explain_waitpid_or_die(int pid, int *status, int options);

DESCRIPTION

The explain_waitpid_or_die function is used to call the waitpid(2) system call. On failure an explanation will be printed to stderr, obtained from explain_waitpid(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_waitpid_or_die(pid, status, options);

	pid		The pid, exactly as to be passed to the waitpid(2) system call.
	status		The status, exactly as to be passed to the waitpid(2) system call.

options

The options, exactly as to be passed to the waitpid(2) system call.

Returns:

This function only returns on success. On failure, prints an explanation and exits.