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// Copyright 2012-2021 David Robillard <d@drobilla.net>
// SPDX-License-Identifier: ISC
#undef NDEBUG
#include <zix/attributes.h>
#include <zix/sem.h>
#include <zix/status.h>
#include <zix/thread.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
static ZixSem sem;
static unsigned n_signals = 1024;
static ZixThreadResult ZIX_THREAD_FUNC
reader(void* ZIX_UNUSED(arg))
{
printf("Reader starting\n");
for (unsigned i = 0; i < n_signals; ++i) {
assert(!zix_sem_wait(&sem));
}
printf("Reader finished\n");
return ZIX_THREAD_RESULT;
}
static ZixThreadResult ZIX_THREAD_FUNC
writer(void* ZIX_UNUSED(arg))
{
printf("Writer starting\n");
for (unsigned i = 0; i < n_signals; ++i) {
assert(!zix_sem_post(&sem));
}
printf("Writer finished\n");
return ZIX_THREAD_RESULT;
}
static void
test_try_wait(void)
{
assert(!zix_sem_init(&sem, 0));
assert(zix_sem_try_wait(&sem) == ZIX_STATUS_UNAVAILABLE);
assert(!zix_sem_post(&sem));
assert(!zix_sem_try_wait(&sem));
assert(zix_sem_try_wait(&sem) == ZIX_STATUS_UNAVAILABLE);
assert(!zix_sem_destroy(&sem));
}
static void
test_timed_wait(void)
{
assert(!zix_sem_init(&sem, 0));
assert(zix_sem_timed_wait(&sem, 0, 0) == ZIX_STATUS_TIMEOUT);
assert(zix_sem_timed_wait(&sem, 0, 999999999) == ZIX_STATUS_TIMEOUT);
assert(!zix_sem_post(&sem));
assert(!zix_sem_timed_wait(&sem, 5, 0));
assert(!zix_sem_post(&sem));
assert(!zix_sem_timed_wait(&sem, 1000, 0));
assert(!zix_sem_destroy(&sem));
}
int
main(int argc, char** argv)
{
if (argc > 2) {
printf("Usage: %s N_SIGNALS\n", argv[0]);
return 1;
}
if (argc > 1) {
n_signals = (unsigned)strtol(argv[1], NULL, 10);
}
test_try_wait();
test_timed_wait();
printf("Testing %u signals...\n", n_signals);
assert(!zix_sem_init(&sem, 0));
ZixThread reader_thread; // NOLINT
assert(!zix_thread_create(&reader_thread, 128, reader, NULL));
ZixThread writer_thread; // NOLINT
assert(!zix_thread_create(&writer_thread, 128, writer, NULL));
assert(!zix_thread_join(reader_thread));
assert(!zix_thread_join(writer_thread));
assert(!zix_sem_destroy(&sem));
return 0;
}
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