/* DF-3590/exploratory: keep /dev/psm0 open with reader threads while the
 * host injects PS/2 mouse events via the QEMU monitor. Exercises psmintr()
 * (hard IRQ 12) -> psmsoftintr() direct call -> lockmgr() on sc->lock. */
#include <sys/ioctl.h>
#include <sys/mouse.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>

static int fd;

static void *reader(void *arg)
{
	char buf[64];
	long total = 0;
	for (;;) {
		ssize_t n = read(fd, buf, sizeof(buf));
		if (n > 0)
			total += n;
	}
	return (NULL);
}

int main(int argc, char **argv)
{
	int secs = argc > 1 ? atoi(argv[1]) : 60;
	pthread_t t1, t2;
	struct timespec ts;

	fd = open("/dev/psm0", O_RDWR);
	if (fd < 0) { perror("open"); return 1; }
	pthread_create(&t1, NULL, reader, NULL);
	pthread_create(&t2, NULL, reader, NULL);
	printf("readers running for %ds\n", secs);
	fflush(stdout);
	ts.tv_sec = secs; ts.tv_nsec = 0;
	nanosleep(&ts, NULL);
	printf("done\n");
	return (0);
}