128 	pid_t wpid;  in wait_and_timeout()  local
136 		wpid = waitpid(pid, status, WNOHANG);  in wait_and_timeout()
137 		if (wpid < 0) {  in wait_and_timeout()
142 		if (wpid == pid)  in wait_and_timeout()
148 	wpid = waitpid(pid, status, WNOHANG);  in wait_and_timeout()
149 	if (wpid < 0) {  in wait_and_timeout()
154 	if (wpid == pid)  in wait_and_timeout()
162 	wpid = waitpid(pid, status, 0);  in wait_and_timeout()
163 	if (wpid < 0) {  in wait_and_timeout()
168 	if (wpid != pid) {  in wait_and_timeout()
169 		warn("%s: waitpid: returned %d not %d", errstr, wpid, pid);  in wait_and_timeout()
232 	pid_t reader_pid, writer_pid, wpid;  in test_blocking_reader()  local
251 	wpid = waitpid(reader_pid, &status, WNOHANG);  in test_blocking_reader()
252 	if (wpid < 0) {  in test_blocking_reader()
259 	if (wpid != 0 && wpid != reader_pid) {  in test_blocking_reader()
262 		    reader_pid, wpid);  in test_blocking_reader()
265 	if (wpid == reader_pid) {  in test_blocking_reader()
307 	pid_t reader_pid, writer_pid, wpid;  in test_blocking_writer()  local
326 	wpid = waitpid(writer_pid, &status, WNOHANG);  in test_blocking_writer()
327 	if (wpid < 0) {  in test_blocking_writer()
334 	if (wpid != 0 && wpid != writer_pid) {  in test_blocking_writer()
337 		    writer_pid, wpid);  in test_blocking_writer()
340 	if (wpid == writer_pid) {  in test_blocking_writer()