wait

Syntax

#include <sys/wait.h> pid_t pid = wait(int *status);

Description

This function causes its caller to delay its execution until a signal is received or one of its child processes terminates. If any child has terminated, return is immediate, returning the process ID and its exit status, if that's available. If no children processes were called since the last call, then -1 is returned and errno is set.

Return Value

If successful, this function returns the exit status of the child. If there is an error, these functions return -1 and set errno to indicate the error type.

Bugs

Currently, this function always fails.

Portability

ANSI/ISO C	No
POSIX	1003.2-1992; 1003.1-2001