Source
pub fn wait4(pid: pid_t, flags: u32, ru: ?*rusage) WaitPidResult {
var status: if (builtin.link_libc) c_int else u32 = undefined;
while (true) {
const rc = system.wait4(pid, &status, @intCast(flags), ru);
switch (errno(rc)) {
.SUCCESS => return .{
.pid = @intCast(rc),
.status = @bitCast(status),
},
.INTR => continue,
.CHILD => unreachable, // The process specified does not exist. It would be a race condition to handle this error.
.INVAL => unreachable, // Invalid flags.
else => unreachable,
}
}
}