WCONTINUED
WEXITED | WTRAPPED | WSTOPPED | WCONTINUED | WNOWAIT) != 0)
options |= (WNOHANG|WUNTRACED|WEXITED|WSTOPPED|WTRAPPED|WCONTINUED);
wflags = WUNTRACED|WCONTINUED;
~(WEXITED|WTRAPPED|WSTOPPED|WCONTINUED|WNOHANG|WNOWAIT))
if (arg & WCONTINUED)
if (options & ~(WNOHANG|WUNTRACED|WCONTINUED)) {
#define WAIT_FLAGS ( WNOHANG | WUNTRACED | WCONTINUED )
#define WOPTMASK (WEXITED|WTRAPPED|WSTOPPED|WCONTINUED|WNOHANG|WNOWAIT)
if (!(options & WCONTINUED))
#define WOPTMASK (WEXITED|WTRAPPED|WSTOPPED|WCONTINUED|WNOHANG|WNOWAIT)