HelenOS sources
This source file includes following definitions.
- test_float1
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdatomic.h>
#include <fibril.h>
#include <fibril_synch.h>
#include <inttypes.h>
#include "../tester.h"
#define THREADS 150
#define ATTEMPTS 100
#define E_10E8 UINT32_C(271828182)
#define PRECISION 100000000
static FIBRIL_SEMAPHORE_INITIALIZE(threads_finished, 0);
static atomic_int threads_fault;
static errno_t e(void *data)
{
for (unsigned int i = 0; i < ATTEMPTS; i++) {
double le = -1;
double e = 0;
double f = 1;
for (double d = 1; e != le; d *= f, f += 1) {
le = e;
e = e + 1 / d;
}
if ((uint32_t) (e * PRECISION) != E_10E8) {
atomic_fetch_add(&threads_fault, 1);
break;
}
}
fibril_semaphore_up(&threads_finished);
return EOK;
}
const char *test_float1(void)
{
int total = 0;
atomic_store(&threads_fault, 0);
fibril_test_spawn_runners(THREADS);
TPRINTF("Creating threads");
for (unsigned int i = 0; i < THREADS; i++) {
fid_t f = fibril_create(e, NULL);
if (!f) {
TPRINTF("\nCould not create thread %u\n", i);
break;
}
fibril_detach(f);
fibril_add_ready(f);
TPRINTF(".");
total++;
}
TPRINTF("\n");
for (int i = 0; i < total; i++) {
TPRINTF("Threads left: %d\n", total - i);
fibril_semaphore_down(&threads_finished);
}
if (atomic_load(&threads_fault) == 0)
return NULL;
return "Test failed";
}
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