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tests: adjust test-aio to new aio_poll() semantics 

aio_poll(ctx, true) will soon block if any fd handlers have been set.
Previously it would only block when .io_flush() returned true.

This means that callers must check their wait condition *before*
aio_poll() to avoid deadlock.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2013-04-17 11:01:02 +02:00
parent bf0da4df83
commit 24d1a6d9d5
1 changed files with 17 additions and 9 deletions
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26
tests/test-aio.c
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@ -15,6 +15,13 @@
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)
{
@ -23,6 +30,14 @@ static void wait_for_aio(void)
}
}
/* 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 {
@ -50,13 +65,6 @@ static void bh_delete_cb(void *opaque)
}
}
typedef struct {
EventNotifier e;
int n;
int active;
bool auto_set;
} EventNotifierTestData;
static int event_active_cb(EventNotifier *e)
{
EventNotifierTestData *data = container_of(e, EventNotifierTestData, e);
@ -281,7 +289,7 @@ static void test_flush_event_notifier(void)
g_assert_cmpint(data.active, ==, 9);
g_assert(aio_poll(ctx, false));
wait_for_aio();
wait_until_inactive(&data);
g_assert_cmpint(data.n, ==, 10);
g_assert_cmpint(data.active, ==, 0);
g_assert(!aio_poll(ctx, false));
@ -325,7 +333,7 @@ static void test_wait_event_notifier_noflush(void)
g_assert_cmpint(data.n, ==, 2);
event_notifier_set(&dummy.e);
wait_for_aio();
wait_until_inactive(&dummy);
g_assert_cmpint(data.n, ==, 2);
g_assert_cmpint(dummy.n, ==, 1);
g_assert_cmpint(dummy.active, ==, 0);