#include <sys/types.h>

#include <err.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define	RUNCMD	"gcc -c -o /tmp/out0.o /src/src0.c"
#define	WARMUP	5

volatile sig_atomic_t got_alarm;

static void sigalrm_handler(int signo)
{
	got_alarm = 1;
}

int main(int argc, char **argv)
{
	long i;
	int n;

	if (argc != 2) {
		errx(1, "need time limit in seconds");
	}

	n = atoi(argv[1]);
	if (n < 1) {
		errx(1, "bad arg");
	}

	signal(SIGALRM, sigalrm_handler);

	if (!getenv("CCBENCH_SKIP_WARMUP")) {
		alarm(WARMUP);
		for (i = 0; !got_alarm; i++) {
			system(RUNCMD);
		}
		printf("warmup: %ld ops (%ld ops/s)\n", i, i / WARMUP);
		got_alarm = 0;
	}

	alarm(n);
	for (i = 0; !got_alarm; i++) {
		system(RUNCMD);
	}
	printf("bench: %ld ops (%ld ops/s)\n", i, i / n);
}