explain_wait4_or_die man page
explain_wait4_or_die — wait for process to change state and report errors
void 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 explain_wait4(3), and then the process terminates by calling
This function is intended to be used in a fashion similar to the following example:
explain_wait4_or_die(pid, status, options, rusage);
The pid, exactly as to be passed to the wait4(2) system call.
The status, exactly as to be passed to the wait4(2) system call.
The options, exactly as to be passed to the wait4(2) system call.
The rusage, exactly as to be passed to the wait4(2) system call.
This function only returns on success, see wait4(2) for more information. On failure, prints an explanation and exits.
wait for process to change state
explain wait4(2) errors
terminate the calling process
libexplain version 1.4
Copyright (C) 2008 Peter Miller