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qemu-e2k/tests/test-aio.c
Stefan Hajnoczi f2e5dca46b aio: drop io_flush argument 
The .io_flush() handler no longer exists and has no users.  Drop the
io_flush argument to aio_set_fd_handler() and related functions.

The AioFlushEventNotifierHandler and AioFlushHandler typedefs are no
longer used and are dropped too.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-08-19 15:52:19 +02:00

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/*
* AioContext tests
*
* Copyright Red Hat, Inc. 2012
*
* Authors:
* Paolo Bonzini <pbonzini@redhat.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*/
#include <glib.h>
#include "block/aio.h"
AioContext *ctx;
typedef struct {
EventNotifier e;
int n;
int active;
bool auto_set;
} EventNotifierTestData;
/* Wait until there are no more BHs or AIO requests */
static void wait_for_aio(void)
{
while (aio_poll(ctx, true)) {
/* Do nothing */
}
}
/* Wait until event notifier becomes inactive */
static void wait_until_inactive(EventNotifierTestData *data)
{
while (data->active > 0) {
aio_poll(ctx, true);
}
}
/* Simple callbacks for testing. */
typedef struct {
QEMUBH *bh;
int n;
int max;
} BHTestData;
static void bh_test_cb(void *opaque)
{
BHTestData *data = opaque;
if (++data->n < data->max) {
qemu_bh_schedule(data->bh);
}
}
static void bh_delete_cb(void *opaque)
{
BHTestData *data = opaque;
if (++data->n < data->max) {
qemu_bh_schedule(data->bh);
} else {
qemu_bh_delete(data->bh);
data->bh = NULL;
}
}
static void event_ready_cb(EventNotifier *e)
{
EventNotifierTestData *data = container_of(e, EventNotifierTestData, e);
g_assert(event_notifier_test_and_clear(e));
data->n++;
if (data->active > 0) {
data->active--;
}
if (data->auto_set && data->active) {
event_notifier_set(e);
}
}
/* Tests using aio_*. */
static void test_notify(void)
{
g_assert(!aio_poll(ctx, false));
aio_notify(ctx);
g_assert(!aio_poll(ctx, true));
g_assert(!aio_poll(ctx, false));
}
static void test_bh_schedule(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
g_assert(aio_poll(ctx, true));
g_assert_cmpint(data.n, ==, 1);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
qemu_bh_delete(data.bh);
}
static void test_bh_schedule10(void)
{
BHTestData data = { .n = 0, .max = 10 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
g_assert(aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
g_assert(aio_poll(ctx, true));
g_assert_cmpint(data.n, ==, 2);
wait_for_aio();
g_assert_cmpint(data.n, ==, 10);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 10);
qemu_bh_delete(data.bh);
}
static void test_bh_cancel(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
qemu_bh_cancel(data.bh);
g_assert_cmpint(data.n, ==, 0);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 0);
qemu_bh_delete(data.bh);
}
static void test_bh_delete(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
qemu_bh_delete(data.bh);
g_assert_cmpint(data.n, ==, 0);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 0);
}
static void test_bh_delete_from_cb(void)
{
BHTestData data1 = { .n = 0, .max = 1 };
data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
qemu_bh_schedule(data1.bh);
g_assert_cmpint(data1.n, ==, 0);
wait_for_aio();
g_assert_cmpint(data1.n, ==, data1.max);
g_assert(data1.bh == NULL);
g_assert(!aio_poll(ctx, false));
g_assert(!aio_poll(ctx, true));
}
static void test_bh_delete_from_cb_many(void)
{
BHTestData data1 = { .n = 0, .max = 1 };
BHTestData data2 = { .n = 0, .max = 3 };
BHTestData data3 = { .n = 0, .max = 2 };
BHTestData data4 = { .n = 0, .max = 4 };
data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
data2.bh = aio_bh_new(ctx, bh_delete_cb, &data2);
data3.bh = aio_bh_new(ctx, bh_delete_cb, &data3);
data4.bh = aio_bh_new(ctx, bh_delete_cb, &data4);
qemu_bh_schedule(data1.bh);
qemu_bh_schedule(data2.bh);
qemu_bh_schedule(data3.bh);
qemu_bh_schedule(data4.bh);
g_assert_cmpint(data1.n, ==, 0);
g_assert_cmpint(data2.n, ==, 0);
g_assert_cmpint(data3.n, ==, 0);
g_assert_cmpint(data4.n, ==, 0);
g_assert(aio_poll(ctx, false));
g_assert_cmpint(data1.n, ==, 1);
g_assert_cmpint(data2.n, ==, 1);
g_assert_cmpint(data3.n, ==, 1);
g_assert_cmpint(data4.n, ==, 1);
g_assert(data1.bh == NULL);
wait_for_aio();
g_assert_cmpint(data1.n, ==, data1.max);
g_assert_cmpint(data2.n, ==, data2.max);
g_assert_cmpint(data3.n, ==, data3.max);
g_assert_cmpint(data4.n, ==, data4.max);
g_assert(data1.bh == NULL);
g_assert(data2.bh == NULL);
g_assert(data3.bh == NULL);
g_assert(data4.bh == NULL);
}
static void test_bh_flush(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
wait_for_aio();
g_assert_cmpint(data.n, ==, 1);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
qemu_bh_delete(data.bh);
}
static void test_set_event_notifier(void)
{
EventNotifierTestData data = { .n = 0, .active = 0 };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 0);
aio_set_event_notifier(ctx, &data.e, NULL);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 0);
event_notifier_cleanup(&data.e);
}
static void test_wait_event_notifier(void)
{
EventNotifierTestData data = { .n = 0, .active = 1 };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 0);
g_assert_cmpint(data.active, ==, 1);
event_notifier_set(&data.e);
g_assert(aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
g_assert_cmpint(data.active, ==, 0);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
g_assert_cmpint(data.active, ==, 0);
aio_set_event_notifier(ctx, &data.e, NULL);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
event_notifier_cleanup(&data.e);
}
static void test_flush_event_notifier(void)
{
EventNotifierTestData data = { .n = 0, .active = 10, .auto_set = true };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 0);
g_assert_cmpint(data.active, ==, 10);
event_notifier_set(&data.e);
g_assert(aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
g_assert_cmpint(data.active, ==, 9);
g_assert(aio_poll(ctx, false));
wait_until_inactive(&data);
g_assert_cmpint(data.n, ==, 10);
g_assert_cmpint(data.active, ==, 0);
g_assert(!aio_poll(ctx, false));
aio_set_event_notifier(ctx, &data.e, NULL);
g_assert(!aio_poll(ctx, false));
event_notifier_cleanup(&data.e);
}
static void test_wait_event_notifier_noflush(void)
{
EventNotifierTestData data = { .n = 0 };
EventNotifierTestData dummy = { .n = 0, .active = 1 };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 0);
/* Until there is an active descriptor, aio_poll may or may not call
* event_ready_cb. Still, it must not block. */
event_notifier_set(&data.e);
g_assert(aio_poll(ctx, true));
data.n = 0;
/* An active event notifier forces aio_poll to look at EventNotifiers. */
event_notifier_init(&dummy.e, false);
aio_set_event_notifier(ctx, &dummy.e, event_ready_cb);
event_notifier_set(&data.e);
g_assert(aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 1);
event_notifier_set(&data.e);
g_assert(aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 2);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 2);
event_notifier_set(&dummy.e);
wait_until_inactive(&dummy);
g_assert_cmpint(data.n, ==, 2);
g_assert_cmpint(dummy.n, ==, 1);
g_assert_cmpint(dummy.active, ==, 0);
aio_set_event_notifier(ctx, &dummy.e, NULL);
event_notifier_cleanup(&dummy.e);
aio_set_event_notifier(ctx, &data.e, NULL);
g_assert(!aio_poll(ctx, false));
g_assert_cmpint(data.n, ==, 2);
event_notifier_cleanup(&data.e);
}
/* Now the same tests, using the context as a GSource. They are
* very similar to the ones above, with g_main_context_iteration
* replacing aio_poll. However:
* - sometimes both the AioContext and the glib main loop wake
* themselves up. Hence, some "g_assert(!aio_poll(ctx, false));"
* are replaced by "while (g_main_context_iteration(NULL, false));".
* - there is no exact replacement for a blocking wait.
* "while (g_main_context_iteration(NULL, true)" seems to work,
* but it is not documented _why_ it works. For these tests a
* non-blocking loop like "while (g_main_context_iteration(NULL, false)"
* works well, and that's what I am using.
*/
static void test_source_notify(void)
{
while (g_main_context_iteration(NULL, false));
aio_notify(ctx);
g_assert(g_main_context_iteration(NULL, true));
g_assert(!g_main_context_iteration(NULL, false));
}
static void test_source_flush(void)
{
g_assert(!g_main_context_iteration(NULL, false));
aio_notify(ctx);
while (g_main_context_iteration(NULL, false));
g_assert(!g_main_context_iteration(NULL, false));
}
static void test_source_bh_schedule(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
g_assert(g_main_context_iteration(NULL, true));
g_assert_cmpint(data.n, ==, 1);
g_assert(!g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
qemu_bh_delete(data.bh);
}
static void test_source_bh_schedule10(void)
{
BHTestData data = { .n = 0, .max = 10 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
g_assert(g_main_context_iteration(NULL, true));
g_assert_cmpint(data.n, ==, 2);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 10);
g_assert(!g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 10);
qemu_bh_delete(data.bh);
}
static void test_source_bh_cancel(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
qemu_bh_cancel(data.bh);
g_assert_cmpint(data.n, ==, 0);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 0);
qemu_bh_delete(data.bh);
}
static void test_source_bh_delete(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
qemu_bh_delete(data.bh);
g_assert_cmpint(data.n, ==, 0);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 0);
}
static void test_source_bh_delete_from_cb(void)
{
BHTestData data1 = { .n = 0, .max = 1 };
data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
qemu_bh_schedule(data1.bh);
g_assert_cmpint(data1.n, ==, 0);
g_main_context_iteration(NULL, true);
g_assert_cmpint(data1.n, ==, data1.max);
g_assert(data1.bh == NULL);
g_assert(!g_main_context_iteration(NULL, false));
}
static void test_source_bh_delete_from_cb_many(void)
{
BHTestData data1 = { .n = 0, .max = 1 };
BHTestData data2 = { .n = 0, .max = 3 };
BHTestData data3 = { .n = 0, .max = 2 };
BHTestData data4 = { .n = 0, .max = 4 };
data1.bh = aio_bh_new(ctx, bh_delete_cb, &data1);
data2.bh = aio_bh_new(ctx, bh_delete_cb, &data2);
data3.bh = aio_bh_new(ctx, bh_delete_cb, &data3);
data4.bh = aio_bh_new(ctx, bh_delete_cb, &data4);
qemu_bh_schedule(data1.bh);
qemu_bh_schedule(data2.bh);
qemu_bh_schedule(data3.bh);
qemu_bh_schedule(data4.bh);
g_assert_cmpint(data1.n, ==, 0);
g_assert_cmpint(data2.n, ==, 0);
g_assert_cmpint(data3.n, ==, 0);
g_assert_cmpint(data4.n, ==, 0);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data1.n, ==, 1);
g_assert_cmpint(data2.n, ==, 1);
g_assert_cmpint(data3.n, ==, 1);
g_assert_cmpint(data4.n, ==, 1);
g_assert(data1.bh == NULL);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data1.n, ==, data1.max);
g_assert_cmpint(data2.n, ==, data2.max);
g_assert_cmpint(data3.n, ==, data3.max);
g_assert_cmpint(data4.n, ==, data4.max);
g_assert(data1.bh == NULL);
g_assert(data2.bh == NULL);
g_assert(data3.bh == NULL);
g_assert(data4.bh == NULL);
}
static void test_source_bh_flush(void)
{
BHTestData data = { .n = 0 };
data.bh = aio_bh_new(ctx, bh_test_cb, &data);
qemu_bh_schedule(data.bh);
g_assert_cmpint(data.n, ==, 0);
g_assert(g_main_context_iteration(NULL, true));
g_assert_cmpint(data.n, ==, 1);
g_assert(!g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
qemu_bh_delete(data.bh);
}
static void test_source_set_event_notifier(void)
{
EventNotifierTestData data = { .n = 0, .active = 0 };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 0);
aio_set_event_notifier(ctx, &data.e, NULL);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 0);
event_notifier_cleanup(&data.e);
}
static void test_source_wait_event_notifier(void)
{
EventNotifierTestData data = { .n = 0, .active = 1 };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 0);
g_assert_cmpint(data.active, ==, 1);
event_notifier_set(&data.e);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
g_assert_cmpint(data.active, ==, 0);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
g_assert_cmpint(data.active, ==, 0);
aio_set_event_notifier(ctx, &data.e, NULL);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
event_notifier_cleanup(&data.e);
}
static void test_source_flush_event_notifier(void)
{
EventNotifierTestData data = { .n = 0, .active = 10, .auto_set = true };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 0);
g_assert_cmpint(data.active, ==, 10);
event_notifier_set(&data.e);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
g_assert_cmpint(data.active, ==, 9);
g_assert(g_main_context_iteration(NULL, false));
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 10);
g_assert_cmpint(data.active, ==, 0);
g_assert(!g_main_context_iteration(NULL, false));
aio_set_event_notifier(ctx, &data.e, NULL);
while (g_main_context_iteration(NULL, false));
event_notifier_cleanup(&data.e);
}
static void test_source_wait_event_notifier_noflush(void)
{
EventNotifierTestData data = { .n = 0 };
EventNotifierTestData dummy = { .n = 0, .active = 1 };
event_notifier_init(&data.e, false);
aio_set_event_notifier(ctx, &data.e, event_ready_cb);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 0);
/* Until there is an active descriptor, glib may or may not call
* event_ready_cb. Still, it must not block. */
event_notifier_set(&data.e);
g_main_context_iteration(NULL, true);
data.n = 0;
/* An active event notifier forces aio_poll to look at EventNotifiers. */
event_notifier_init(&dummy.e, false);
aio_set_event_notifier(ctx, &dummy.e, event_ready_cb);
event_notifier_set(&data.e);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
g_assert(!g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 1);
event_notifier_set(&data.e);
g_assert(g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 2);
g_assert(!g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 2);
event_notifier_set(&dummy.e);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 2);
g_assert_cmpint(dummy.n, ==, 1);
g_assert_cmpint(dummy.active, ==, 0);
aio_set_event_notifier(ctx, &dummy.e, NULL);
event_notifier_cleanup(&dummy.e);
aio_set_event_notifier(ctx, &data.e, NULL);
while (g_main_context_iteration(NULL, false));
g_assert_cmpint(data.n, ==, 2);
event_notifier_cleanup(&data.e);
}
/* End of tests. */
int main(int argc, char **argv)
{
GSource *src;
ctx = aio_context_new();
src = aio_get_g_source(ctx);
g_source_attach(src, NULL);
g_source_unref(src);
while (g_main_context_iteration(NULL, false));
g_test_init(&argc, &argv, NULL);
g_test_add_func("/aio/notify", test_notify);
g_test_add_func("/aio/bh/schedule", test_bh_schedule);
g_test_add_func("/aio/bh/schedule10", test_bh_schedule10);
g_test_add_func("/aio/bh/cancel", test_bh_cancel);
g_test_add_func("/aio/bh/delete", test_bh_delete);
g_test_add_func("/aio/bh/callback-delete/one", test_bh_delete_from_cb);
g_test_add_func("/aio/bh/callback-delete/many", test_bh_delete_from_cb_many);
g_test_add_func("/aio/bh/flush", test_bh_flush);
g_test_add_func("/aio/event/add-remove", test_set_event_notifier);
g_test_add_func("/aio/event/wait", test_wait_event_notifier);
g_test_add_func("/aio/event/wait/no-flush-cb", test_wait_event_notifier_noflush);
g_test_add_func("/aio/event/flush", test_flush_event_notifier);
g_test_add_func("/aio-gsource/notify", test_source_notify);
g_test_add_func("/aio-gsource/flush", test_source_flush);
g_test_add_func("/aio-gsource/bh/schedule", test_source_bh_schedule);
g_test_add_func("/aio-gsource/bh/schedule10", test_source_bh_schedule10);
g_test_add_func("/aio-gsource/bh/cancel", test_source_bh_cancel);
g_test_add_func("/aio-gsource/bh/delete", test_source_bh_delete);
g_test_add_func("/aio-gsource/bh/callback-delete/one", test_source_bh_delete_from_cb);
g_test_add_func("/aio-gsource/bh/callback-delete/many", test_source_bh_delete_from_cb_many);
g_test_add_func("/aio-gsource/bh/flush", test_source_bh_flush);
g_test_add_func("/aio-gsource/event/add-remove", test_source_set_event_notifier);
g_test_add_func("/aio-gsource/event/wait", test_source_wait_event_notifier);
g_test_add_func("/aio-gsource/event/wait/no-flush-cb", test_source_wait_event_notifier_noflush);
g_test_add_func("/aio-gsource/event/flush", test_source_flush_event_notifier);
return g_test_run();
}
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