#include <syscall.h> #include <sys/types.h> #include <sys/wait.h> #include <sys/resource.h> /* Wait for a child to exit. When one does, put its status in *STAT_LOC and * return its process ID. For errors return (pid_t) -1. If USAGE is not nil, * store information about the child's resource usage (as a `struct rusage') * there. If the WUNTRACED bit is set in OPTIONS, return status for stopped * children; otherwise don't. */ pid_t wait3 (__WAIT_STATUS stat_loc, int options, struct rusage * usage) { return wait4 (WAIT_ANY, stat_loc, options, usage); }