struct thread_state {
pthread_t thread;
+ const char *filename;
int thread_num;
long long timestamp;
};
{
struct thread_state *ts = (struct thread_state *)arg;
- char namebuf[64];
- sprintf(namebuf, "file-%d", ts->thread_num + 1);
- printf("Opening %s\n", namebuf);
+ printf("Opening %s\n", ts->filename);
int64_t start, end;
start = now_hires();
- struct stat stat_buf;
- stat(namebuf, &stat_buf);
+ //struct stat stat_buf;
+ //stat(namebuf, &stat_buf);
-#if 0
- FILE *f = fopen(namebuf, "rb");
+ FILE *f = fopen(ts->filename, "rb");
if (f == NULL) {
perror("fopen");
return NULL;
}
- char buf[4096];
- fread(buf, 1, sizeof(buf), f);
-#endif
+ char buf[65536];
+ while (fread(buf, 1, sizeof(buf), f) > 0) { }
end = now_hires();
printf("Thread %d: Time = %"PRIi64"\n", ts->thread_num, end - start);
- // fclose(f);
+ fclose(f);
return NULL;
}
-void launch_thread(int i)
+void launch_thread(int i, const char *filename)
{
threads[i].thread_num = i;
- printf("Launching thread %d...\n", i);
+ threads[i].filename = filename;
+ printf("Launching thread %d [%s]...\n", i, filename);
if (pthread_create(&threads[i].thread, NULL, benchmark_thread, &threads[i]) != 0) {
fprintf(stderr, "Error launching thread!\n");
exit(1);
int main(int argc, char *argv[])
{
- int threads = 8;
-
- if (argc > 1)
- threads = atoi(argv[1]);
- if (threads > MAX_THREADS)
- threads = MAX_THREADS;
+ int threads = argc - 1;
printf("Testing with %d threads\n", threads);
for (int i = 0; i < threads; i++) {
- launch_thread(i);
+ launch_thread(i, argv[i + 1]);
}
for (int i = 0; i < threads; i++) {