#include <errno.h>
#include <assert.h>
#include <sys/time.h>
+#include <sys/types.h>
#define LOOPS_DEFAULT 1000000
static int loops = LOOPS_DEFAULT;
* discarding returned value of read(), write()
* causes error in building environment for perf
*/
- int ret;
- pid_t pid;
+ int ret, wait_stat;
+ pid_t pid, retpid;
argc = parse_options(argc, argv, options,
bench_sched_pipe_usage, 0);
gettimeofday(&stop, NULL);
timersub(&stop, &start, &diff);
- if (pid)
+ if (pid) {
+ retpid = waitpid(pid, &wait_stat, 0);
+ assert((retpid == pid) && WIFEXITED(wait_stat));
return 0;
+ }
if (simple)
printf("%lu.%03lu\n",