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//
// Copyright 2022 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2024 Capitar IT Group BV <info@capitar.com>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include <nng/nng.h>
#include "convey.h"
// Notify tests for verifying condvars.
struct notifyarg {
int did;
nng_duration when;
nng_mtx *mx;
nng_cv *cv;
};
void
notifyafter(void *a)
{
struct notifyarg *na = a;
nng_msleep(na->when);
nng_mtx_lock(na->mx);
na->did = 1;
nng_cv_wake(na->cv);
nng_mtx_unlock(na->mx);
}
struct notifyarg arg;
nng_thread *thr;
static void
test_sync(void)
{
Convey("Mutexes work", {
nng_mtx *mx;
So(nng_mtx_alloc(&mx) == 0);
Reset({ nng_mtx_free(mx); });
Convey("We can lock and unlock a mutex", {
nng_mtx_lock(mx);
So(1);
nng_mtx_unlock(mx);
So(1);
Convey("And then lock it again", {
nng_mtx_lock(mx);
So(1);
nng_mtx_unlock(mx);
So(1);
});
});
Convey("Things block properly", {
So(nng_mtx_alloc(&arg.mx) == 0);
So(nng_cv_alloc(&arg.cv, arg.mx) == 0);
arg.did = 0;
arg.when = 0;
nng_mtx_lock(arg.mx);
So(nng_thread_create(&thr, notifyafter, &arg) == 0);
nng_msleep(10);
So(arg.did == 0);
nng_mtx_unlock(arg.mx);
nng_msleep(10);
nng_mtx_lock(arg.mx);
while (!arg.did) {
nng_cv_wait(arg.cv);
}
So(arg.did != 0);
nng_mtx_unlock(arg.mx);
nng_thread_destroy(thr);
nng_cv_free(arg.cv);
nng_mtx_free(arg.mx);
})
});
Convey("Condition variables work", {
So(nng_mtx_alloc(&arg.mx) == 0);
So(nng_cv_alloc(&arg.cv, arg.mx) == 0);
Reset({
nng_cv_free(arg.cv);
nng_mtx_free(arg.mx);
});
Convey("Notification works", {
arg.did = 0;
arg.when = 10;
So(nng_thread_create(&thr, notifyafter, &arg) == 0);
nng_mtx_lock(arg.mx);
if (!arg.did) {
nng_cv_wait(arg.cv);
}
nng_mtx_unlock(arg.mx);
nng_thread_destroy(thr);
So(arg.did == 1);
});
Convey("Timeout works", {
arg.did = 0;
arg.when = 200;
So(nng_thread_create(&thr, notifyafter, &arg) == 0);
nng_mtx_lock(arg.mx);
if (!arg.did) {
nng_cv_until(arg.cv, nng_clock() + 10);
}
So(arg.did == 0);
nng_mtx_unlock(arg.mx);
nng_thread_destroy(thr);
});
Convey("Empty timeout is EAGAIN", {
nng_mtx_lock(arg.mx);
So(nng_cv_until(arg.cv, 0) == NNG_EAGAIN);
nng_mtx_unlock(arg.mx);
});
Convey("Not running works", {
arg.did = 0;
arg.when = 1;
nng_mtx_lock(arg.mx);
if (!arg.did) {
nng_cv_until(arg.cv, nng_clock() + 10);
}
So(arg.did == 0);
nng_mtx_unlock(arg.mx);
});
});
}
TestMain(
"Synchronization", { Convey("Synchronization works", { test_sync(); }); })
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