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glib/glib/tests/mainloop.c

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/* Unit tests for GMainLoop
* Copyright (C) 2011 Red Hat, Inc
* Author: Matthias Clasen
*
* This work is provided "as is"; redistribution and modification
* in whole or in part, in any medium, physical or electronic is
* permitted without restriction.
*
* This work is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* In no event shall the authors or contributors be liable for any
* direct, indirect, incidental, special, exemplary, or consequential
* damages (including, but not limited to, procurement of substitute
* goods or services; loss of use, data, or profits; or business
* interruption) however caused and on any theory of liability, whether
* in contract, strict liability, or tort (including negligence or
* otherwise) arising in any way out of the use of this software, even
* if advised of the possibility of such damage.
*/
#include <glib.h>
#include "glib-private.h"
#include <stdio.h>
#include <string.h>
static gboolean
cb (gpointer data)
{
return FALSE;
}
static gboolean
prepare (GSource *source, gint *time)
{
return FALSE;
}
static gboolean
check (GSource *source)
{
return FALSE;
}
static gboolean
dispatch (GSource *source, GSourceFunc cb, gpointer date)
{
return FALSE;
}
static GSourceFuncs funcs = {
prepare,
check,
dispatch,
NULL
};
static void
test_maincontext_basic (void)
{
GMainContext *ctx;
GSource *source;
guint id;
gpointer data = &funcs;
ctx = g_main_context_new ();
g_assert_false (g_main_context_pending (ctx));
g_assert_false (g_main_context_iteration (ctx, FALSE));
source = g_source_new (&funcs, sizeof (GSource));
g_assert_cmpint (g_source_get_priority (source), ==, G_PRIORITY_DEFAULT);
g_assert_false (g_source_is_destroyed (source));
g_assert_false (g_source_get_can_recurse (source));
g_assert_null (g_source_get_name (source));
g_source_set_can_recurse (source, TRUE);
g_source_set_name (source, "d");
g_assert_true (g_source_get_can_recurse (source));
g_assert_cmpstr (g_source_get_name (source), ==, "d");
g_assert_null (g_main_context_find_source_by_user_data (ctx, NULL));
g_assert_null (g_main_context_find_source_by_funcs_user_data (ctx, &funcs, NULL));
id = g_source_attach (source, ctx);
g_assert_cmpint (g_source_get_id (source), ==, id);
g_assert_true (g_main_context_find_source_by_id (ctx, id) == source);
g_source_set_priority (source, G_PRIORITY_HIGH);
g_assert_cmpint (g_source_get_priority (source), ==, G_PRIORITY_HIGH);
g_source_destroy (source);
g_assert_true (g_source_get_context (source) == ctx);
g_assert_null (g_main_context_find_source_by_id (ctx, id));
g_main_context_unref (ctx);
if (g_test_undefined ())
{
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion*source->context != NULL*failed*");
g_assert_null (g_source_get_context (source));
g_test_assert_expected_messages ();
}
g_source_unref (source);
ctx = g_main_context_default ();
source = g_source_new (&funcs, sizeof (GSource));
g_source_set_funcs (source, &funcs);
g_source_set_callback (source, cb, data, NULL);
id = g_source_attach (source, ctx);
g_source_unref (source);
g_source_set_name_by_id (id, "e");
g_assert_cmpstr (g_source_get_name (source), ==, "e");
g_assert_true (g_source_get_context (source) == ctx);
g_assert_true (g_source_remove_by_funcs_user_data (&funcs, data));
source = g_source_new (&funcs, sizeof (GSource));
g_source_set_funcs (source, &funcs);
g_source_set_callback (source, cb, data, NULL);
id = g_source_attach (source, ctx);
g_source_unref (source);
g_assert_true (g_source_remove_by_user_data (data));
g_assert_false (g_source_remove_by_user_data ((gpointer)0x1234));
g_idle_add (cb, data);
g_assert_true (g_idle_remove_by_data (data));
}
static void
test_mainloop_basic (void)
{
GMainLoop *loop;
GMainContext *ctx;
loop = g_main_loop_new (NULL, FALSE);
g_assert_false (g_main_loop_is_running (loop));
g_main_loop_ref (loop);
ctx = g_main_loop_get_context (loop);
g_assert_true (ctx == g_main_context_default ());
g_main_loop_unref (loop);
g_assert_cmpint (g_main_depth (), ==, 0);
g_main_loop_unref (loop);
}
static gint a;
static gint b;
static gint c;
static gboolean
count_calls (gpointer data)
{
gint *i = data;
(*i)++;
return TRUE;
}
static void
test_timeouts (void)
{
GMainContext *ctx;
GMainLoop *loop;
GSource *source;
if (!g_test_thorough ())
{
g_test_skip ("Not running timing heavy test");
return;
}
a = b = c = 0;
ctx = g_main_context_new ();
loop = g_main_loop_new (ctx, FALSE);
source = g_timeout_source_new (100);
g_source_set_callback (source, count_calls, &a, NULL);
g_source_attach (source, ctx);
g_source_unref (source);
source = g_timeout_source_new (250);
g_source_set_callback (source, count_calls, &b, NULL);
g_source_attach (source, ctx);
g_source_unref (source);
source = g_timeout_source_new (330);
g_source_set_callback (source, count_calls, &c, NULL);
g_source_attach (source, ctx);
g_source_unref (source);
source = g_timeout_source_new (1050);
g_source_set_callback (source, (GSourceFunc)g_main_loop_quit, loop, NULL);
g_source_attach (source, ctx);
g_source_unref (source);
g_main_loop_run (loop);
/* We may be delayed for an arbitrary amount of time - for example,
* it's possible for all timeouts to fire exactly once.
*/
g_assert_cmpint (a, >, 0);
g_assert_cmpint (a, >=, b);
g_assert_cmpint (b, >=, c);
g_assert_cmpint (a, <=, 10);
g_assert_cmpint (b, <=, 4);
g_assert_cmpint (c, <=, 3);
g_main_loop_unref (loop);
g_main_context_unref (ctx);
}
static void
test_priorities (void)
{
GMainContext *ctx;
GSource *sourcea;
GSource *sourceb;
a = b = c = 0;
ctx = g_main_context_new ();
sourcea = g_idle_source_new ();
g_source_set_callback (sourcea, count_calls, &a, NULL);
g_source_set_priority (sourcea, 1);
g_source_attach (sourcea, ctx);
g_source_unref (sourcea);
sourceb = g_idle_source_new ();
g_source_set_callback (sourceb, count_calls, &b, NULL);
g_source_set_priority (sourceb, 0);
g_source_attach (sourceb, ctx);
g_source_unref (sourceb);
g_assert_true (g_main_context_pending (ctx));
g_assert_true (g_main_context_iteration (ctx, FALSE));
g_assert_cmpint (a, ==, 0);
g_assert_cmpint (b, ==, 1);
g_assert_true (g_main_context_iteration (ctx, FALSE));
g_assert_cmpint (a, ==, 0);
g_assert_cmpint (b, ==, 2);
g_source_destroy (sourceb);
g_assert_true (g_main_context_iteration (ctx, FALSE));
g_assert_cmpint (a, ==, 1);
g_assert_cmpint (b, ==, 2);
g_assert_true (g_main_context_pending (ctx));
g_source_destroy (sourcea);
g_assert_false (g_main_context_pending (ctx));
g_main_context_unref (ctx);
}
static gboolean
quit_loop (gpointer data)
{
GMainLoop *loop = data;
g_main_loop_quit (loop);
return G_SOURCE_REMOVE;
}
static gint count;
static gboolean
func (gpointer data)
{
if (data != NULL)
g_assert_true (data == g_thread_self ());
count++;
return FALSE;
}
static gboolean
call_func (gpointer data)
{
func (g_thread_self ());
return G_SOURCE_REMOVE;
}
static GMutex mutex;
static GCond cond;
static gboolean thread_ready;
static gpointer
thread_func (gpointer data)
{
GMainContext *ctx = data;
GMainLoop *loop;
GSource *source;
g_main_context_push_thread_default (ctx);
loop = g_main_loop_new (ctx, FALSE);
g_mutex_lock (&mutex);
thread_ready = TRUE;
g_cond_signal (&cond);
g_mutex_unlock (&mutex);
source = g_timeout_source_new (500);
g_source_set_callback (source, quit_loop, loop, NULL);
g_source_attach (source, ctx);
g_source_unref (source);
g_main_loop_run (loop);
g_main_context_pop_thread_default (ctx);
g_main_loop_unref (loop);
return NULL;
}
static void
test_invoke (void)
{
GMainContext *ctx;
GThread *thread;
count = 0;
/* this one gets invoked directly */
g_main_context_invoke (NULL, func, g_thread_self ());
g_assert_cmpint (count, ==, 1);
/* invoking out of an idle works too */
g_idle_add (call_func, NULL);
g_main_context_iteration (g_main_context_default (), FALSE);
g_assert_cmpint (count, ==, 2);
/* test thread-default forcing the invocation to go
* to another thread
*/
ctx = g_main_context_new ();
thread = g_thread_new ("worker", thread_func, ctx);
g_mutex_lock (&mutex);
while (!thread_ready)
g_cond_wait (&cond, &mutex);
g_mutex_unlock (&mutex);
g_main_context_invoke (ctx, func, thread);
g_thread_join (thread);
g_assert_cmpint (count, ==, 3);
g_main_context_unref (ctx);
}
/* We can't use timeout sources here because on slow or heavily-loaded
* machines, the test program might not get enough cycles to hit the
* timeouts at the expected times. So instead we define a source that
* is based on the number of GMainContext iterations.
*/
static gint counter;
static gint64 last_counter_update;
typedef struct {
GSource source;
gint interval;
gint timeout;
} CounterSource;
static gboolean
counter_source_prepare (GSource *source,
gint *timeout)
{
CounterSource *csource = (CounterSource *)source;
gint64 now;
now = g_source_get_time (source);
if (now != last_counter_update)
{
last_counter_update = now;
counter++;
}
*timeout = 1;
return counter >= csource->timeout;
}
static gboolean
counter_source_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
CounterSource *csource = (CounterSource *) source;
gboolean again;
again = callback (user_data);
if (again)
csource->timeout = counter + csource->interval;
return again;
}
static GSourceFuncs counter_source_funcs = {
counter_source_prepare,
NULL,
counter_source_dispatch,
NULL,
};
static GSource *
counter_source_new (gint interval)
{
GSource *source = g_source_new (&counter_source_funcs, sizeof (CounterSource));
CounterSource *csource = (CounterSource *) source;
csource->interval = interval;
csource->timeout = counter + interval;
return source;
}
static gboolean
run_inner_loop (gpointer user_data)
{
GMainContext *ctx = user_data;
GMainLoop *inner;
GSource *timeout;
a++;
inner = g_main_loop_new (ctx, FALSE);
timeout = counter_source_new (100);
g_source_set_callback (timeout, quit_loop, inner, NULL);
g_source_attach (timeout, ctx);
g_source_unref (timeout);
g_main_loop_run (inner);
g_main_loop_unref (inner);
return G_SOURCE_CONTINUE;
}
static void
test_child_sources (void)
{
GMainContext *ctx;
GMainLoop *loop;
GSource *parent, *child_b, *child_c, *end;
ctx = g_main_context_new ();
loop = g_main_loop_new (ctx, FALSE);
a = b = c = 0;
parent = counter_source_new (2000);
g_source_set_callback (parent, run_inner_loop, ctx, NULL);
g_source_set_priority (parent, G_PRIORITY_LOW);
g_source_attach (parent, ctx);
child_b = counter_source_new (250);
g_source_set_callback (child_b, count_calls, &b, NULL);
g_source_add_child_source (parent, child_b);
child_c = counter_source_new (330);
g_source_set_callback (child_c, count_calls, &c, NULL);
g_source_set_priority (child_c, G_PRIORITY_HIGH);
g_source_add_child_source (parent, child_c);
/* Child sources always have the priority of the parent */
g_assert_cmpint (g_source_get_priority (parent), ==, G_PRIORITY_LOW);
g_assert_cmpint (g_source_get_priority (child_b), ==, G_PRIORITY_LOW);
g_assert_cmpint (g_source_get_priority (child_c), ==, G_PRIORITY_LOW);
g_source_set_priority (parent, G_PRIORITY_DEFAULT);
g_assert_cmpint (g_source_get_priority (parent), ==, G_PRIORITY_DEFAULT);
g_assert_cmpint (g_source_get_priority (child_b), ==, G_PRIORITY_DEFAULT);
g_assert_cmpint (g_source_get_priority (child_c), ==, G_PRIORITY_DEFAULT);
end = counter_source_new (1050);
g_source_set_callback (end, quit_loop, loop, NULL);
g_source_attach (end, ctx);
g_source_unref (end);
g_main_loop_run (loop);
/* The parent source's own timeout will never trigger, so "a" will
* only get incremented when "b" or "c" does. And when timeouts get
* blocked, they still wait the full interval next time rather than
* "catching up". So the timing is:
*
* 250 - b++ -> a++, run_inner_loop
* 330 - (c is blocked)
* 350 - inner_loop ends
* 350 - c++ belatedly -> a++, run_inner_loop
* 450 - inner loop ends
* 500 - b++ -> a++, run_inner_loop
* 600 - inner_loop ends
* 680 - c++ -> a++, run_inner_loop
* 750 - (b is blocked)
* 780 - inner loop ends
* 780 - b++ belatedly -> a++, run_inner_loop
* 880 - inner loop ends
* 1010 - c++ -> a++, run_inner_loop
* 1030 - (b is blocked)
* 1050 - end runs, quits outer loop, which has no effect yet
* 1110 - inner loop ends, a returns, outer loop exits
*/
g_assert_cmpint (a, ==, 6);
g_assert_cmpint (b, ==, 3);
g_assert_cmpint (c, ==, 3);
g_source_destroy (parent);
g_source_unref (parent);
g_source_unref (child_b);
g_source_unref (child_c);
g_main_loop_unref (loop);
g_main_context_unref (ctx);
}
static void
test_recursive_child_sources (void)
{
GMainContext *ctx;
GMainLoop *loop;
GSource *parent, *child_b, *child_c, *end;
ctx = g_main_context_new ();
loop = g_main_loop_new (ctx, FALSE);
a = b = c = 0;
parent = counter_source_new (500);
g_source_set_callback (parent, count_calls, &a, NULL);
child_b = counter_source_new (220);
g_source_set_callback (child_b, count_calls, &b, NULL);
g_source_add_child_source (parent, child_b);
child_c = counter_source_new (430);
g_source_set_callback (child_c, count_calls, &c, NULL);
g_source_add_child_source (child_b, child_c);
g_source_attach (parent, ctx);
end = counter_source_new (2010);
g_source_set_callback (end, (GSourceFunc)g_main_loop_quit, loop, NULL);
g_source_attach (end, ctx);
g_source_unref (end);
g_main_loop_run (loop);
/* Sequence of events:
* 220 b (b -> 440, a -> 720)
* 430 c (c -> 860, b -> 650, a -> 930)
* 650 b (b -> 870, a -> 1150)
* 860 c (c -> 1290, b -> 1080, a -> 1360)
* 1080 b (b -> 1300, a -> 1580)
* 1290 c (c -> 1720, b -> 1510, a -> 1790)
* 1510 b (b -> 1730, a -> 2010)
* 1720 c (c -> 2150, b -> 1940, a -> 2220)
* 1940 b (b -> 2160, a -> 2440)
*/
g_assert_cmpint (a, ==, 9);
g_assert_cmpint (b, ==, 9);
g_assert_cmpint (c, ==, 4);
g_source_destroy (parent);
g_source_unref (parent);
g_source_unref (child_b);
g_source_unref (child_c);
g_main_loop_unref (loop);
g_main_context_unref (ctx);
}
typedef struct {
GSource *parent, *old_child, *new_child;
GMainLoop *loop;
} SwappingTestData;
static gboolean
swap_sources (gpointer user_data)
{
SwappingTestData *data = user_data;
if (data->old_child)
{
g_source_remove_child_source (data->parent, data->old_child);
g_clear_pointer (&data->old_child, g_source_unref);
}
if (!data->new_child)
{
data->new_child = g_timeout_source_new (0);
g_source_set_callback (data->new_child, quit_loop, data->loop, NULL);
g_source_add_child_source (data->parent, data->new_child);
}
return G_SOURCE_CONTINUE;
}
static gboolean
assert_not_reached_callback (gpointer user_data)
{
g_assert_not_reached ();
return G_SOURCE_REMOVE;
}
static void
test_swapping_child_sources (void)
{
GMainContext *ctx;
GMainLoop *loop;
SwappingTestData data;
ctx = g_main_context_new ();
loop = g_main_loop_new (ctx, FALSE);
data.parent = counter_source_new (50);
data.loop = loop;
g_source_set_callback (data.parent, swap_sources, &data, NULL);
g_source_attach (data.parent, ctx);
data.old_child = counter_source_new (100);
g_source_add_child_source (data.parent, data.old_child);
g_source_set_callback (data.old_child, assert_not_reached_callback, NULL, NULL);
data.new_child = NULL;
g_main_loop_run (loop);
g_source_destroy (data.parent);
g_source_unref (data.parent);
g_source_unref (data.new_child);
g_main_loop_unref (loop);
g_main_context_unref (ctx);
}
static gboolean
add_source_callback (gpointer user_data)
{
GMainLoop *loop = user_data;
GSource *self = g_main_current_source (), *child;
GIOChannel *io;
/* It doesn't matter whether this is a valid fd or not; it never
* actually gets polled; the test is just checking that
* g_source_add_child_source() doesn't crash.
*/
io = g_io_channel_unix_new (0);
child = g_io_create_watch (io, G_IO_IN);
g_source_add_child_source (self, child);
g_source_unref (child);
g_io_channel_unref (io);
g_main_loop_quit (loop);
return FALSE;
}
static void
test_blocked_child_sources (void)
{
GMainContext *ctx;
GMainLoop *loop;
GSource *source;
g_test_bug ("701283");
ctx = g_main_context_new ();
loop = g_main_loop_new (ctx, FALSE);
source = g_idle_source_new ();
g_source_set_callback (source, add_source_callback, loop, NULL);
g_source_attach (source, ctx);
g_main_loop_run (loop);
g_source_destroy (source);
g_source_unref (source);
g_main_loop_unref (loop);
g_main_context_unref (ctx);
}
typedef struct {
GMainContext *ctx;
GMainLoop *loop;
GSource *timeout1, *timeout2;
gint64 time1;
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GTimeVal tv; /* needed for g_source_get_current_time() */
G_GNUC_END_IGNORE_DEPRECATIONS
} TimeTestData;
static gboolean
timeout1_callback (gpointer user_data)
{
TimeTestData *data = user_data;
GSource *source;
gint64 mtime1, mtime2, time2;
source = g_main_current_source ();
g_assert_true (source == data->timeout1);
if (data->time1 == -1)
{
/* First iteration */
g_assert_false (g_source_is_destroyed (data->timeout2));
mtime1 = g_get_monotonic_time ();
data->time1 = g_source_get_time (source);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
g_source_get_current_time (source, &data->tv);
G_GNUC_END_IGNORE_DEPRECATIONS
/* g_source_get_time() does not change during a single callback */
g_usleep (1000000);
mtime2 = g_get_monotonic_time ();
time2 = g_source_get_time (source);
g_assert_cmpint (mtime1, <, mtime2);
g_assert_cmpint (data->time1, ==, time2);
}
else
{
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GTimeVal tv;
G_GNUC_END_IGNORE_DEPRECATIONS
/* Second iteration */
g_assert_true (g_source_is_destroyed (data->timeout2));
/* g_source_get_time() MAY change between iterations; in this
* case we know for sure that it did because of the g_usleep()
* last time.
*/
time2 = g_source_get_time (source);
g_assert_cmpint (data->time1, <, time2);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
g_source_get_current_time (source, &tv);
G_GNUC_END_IGNORE_DEPRECATIONS
g_assert_true (tv.tv_sec > data->tv.tv_sec ||
(tv.tv_sec == data->tv.tv_sec &&
tv.tv_usec > data->tv.tv_usec));
g_main_loop_quit (data->loop);
}
return TRUE;
}
static gboolean
timeout2_callback (gpointer user_data)
{
TimeTestData *data = user_data;
GSource *source;
gint64 time2, time3;
source = g_main_current_source ();
g_assert_true (source == data->timeout2);
g_assert_false (g_source_is_destroyed (data->timeout1));
/* g_source_get_time() does not change between different sources in
* a single iteration of the mainloop.
*/
time2 = g_source_get_time (source);
g_assert_cmpint (data->time1, ==, time2);
/* The source should still have a valid time even after being
* destroyed, since it's currently running.
*/
g_source_destroy (source);
time3 = g_source_get_time (source);
g_assert_cmpint (time2, ==, time3);
return FALSE;
}
static void
test_source_time (void)
{
TimeTestData data;
data.ctx = g_main_context_new ();
data.loop = g_main_loop_new (data.ctx, FALSE);
data.timeout1 = g_timeout_source_new (0);
g_source_set_callback (data.timeout1, timeout1_callback, &data, NULL);
g_source_attach (data.timeout1, data.ctx);
data.timeout2 = g_timeout_source_new (0);
g_source_set_callback (data.timeout2, timeout2_callback, &data, NULL);
g_source_attach (data.timeout2, data.ctx);
data.time1 = -1;
g_main_loop_run (data.loop);
g_assert_false (g_source_is_destroyed (data.timeout1));
g_assert_true (g_source_is_destroyed (data.timeout2));
g_source_destroy (data.timeout1);
g_source_unref (data.timeout1);
g_source_unref (data.timeout2);
g_main_loop_unref (data.loop);
g_main_context_unref (data.ctx);
}
typedef struct {
guint outstanding_ops;
GMainLoop *loop;
} TestOverflowData;
static gboolean
on_source_fired_cb (gpointer user_data)
{
TestOverflowData *data = user_data;
GSource *current_source;
GMainContext *current_context;
guint source_id;
data->outstanding_ops--;
current_source = g_main_current_source ();
current_context = g_source_get_context (current_source);
source_id = g_source_get_id (current_source);
g_assert_nonnull (g_main_context_find_source_by_id (current_context, source_id));
g_source_destroy (current_source);
g_assert_null (g_main_context_find_source_by_id (current_context, source_id));
if (data->outstanding_ops == 0)
g_main_loop_quit (data->loop);
return FALSE;
}
static GSource *
add_idle_source (GMainContext *ctx,
TestOverflowData *data)
{
GSource *source;
source = g_idle_source_new ();
g_source_set_callback (source, on_source_fired_cb, data, NULL);
g_source_attach (source, ctx);
g_source_unref (source);
data->outstanding_ops++;
return source;
}
static void
test_mainloop_overflow (void)
{
GMainContext *ctx;
GMainLoop *loop;
GSource *source;
TestOverflowData data;
guint i;
g_test_bug ("687098");
memset (&data, 0, sizeof (data));
ctx = GLIB_PRIVATE_CALL (g_main_context_new_with_next_id) (G_MAXUINT-1);
loop = g_main_loop_new (ctx, TRUE);
data.outstanding_ops = 0;
data.loop = loop;
source = add_idle_source (ctx, &data);
g_assert_cmpint (source->source_id, ==, G_MAXUINT-1);
source = add_idle_source (ctx, &data);
g_assert_cmpint (source->source_id, ==, G_MAXUINT);
source = add_idle_source (ctx, &data);
g_assert_cmpint (source->source_id, !=, 0);
/* Now, a lot more sources */
for (i = 0; i < 50; i++)
{
source = add_idle_source (ctx, &data);
g_assert_cmpint (source->source_id, !=, 0);
}
g_main_loop_run (loop);
g_assert_cmpint (data.outstanding_ops, ==, 0);
g_main_loop_unref (loop);
g_main_context_unref (ctx);
}
static volatile gint ready_time_dispatched;
static gboolean
ready_time_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
g_atomic_int_set (&ready_time_dispatched, TRUE);
g_source_set_ready_time (source, -1);
return TRUE;
}
static gpointer
run_context (gpointer user_data)
{
g_main_loop_run (user_data);
return NULL;
}
static void
test_ready_time (void)
{
GThread *thread;
GSource *source;
GSourceFuncs source_funcs = {
NULL, NULL, ready_time_dispatch
};
GMainLoop *loop;
source = g_source_new (&source_funcs, sizeof (GSource));
g_source_attach (source, NULL);
g_source_unref (source);
/* Unfortunately we can't do too many things with respect to timing
* without getting into trouble on slow systems or heavily loaded
* builders.
*
* We can test that the basics are working, though.
*/
/* A source with no ready time set should not fire */
g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
while (g_main_context_iteration (NULL, FALSE));
g_assert_false (ready_time_dispatched);
/* The ready time should not have been changed */
g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
/* Of course this shouldn't change anything either */
g_source_set_ready_time (source, -1);
g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
/* A source with a ready time set to tomorrow should not fire on any
* builder, no matter how badly loaded...
*/
g_source_set_ready_time (source, g_get_monotonic_time () + G_TIME_SPAN_DAY);
while (g_main_context_iteration (NULL, FALSE));
g_assert_false (ready_time_dispatched);
/* Make sure it didn't get reset */
g_assert_cmpint (g_source_get_ready_time (source), !=, -1);
/* Ready time of -1 -> don't fire */
g_source_set_ready_time (source, -1);
while (g_main_context_iteration (NULL, FALSE));
g_assert_false (ready_time_dispatched);
/* Not reset, but should still be -1 from above */
g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
/* A ready time of the current time should fire immediately */
g_source_set_ready_time (source, g_get_monotonic_time ());
while (g_main_context_iteration (NULL, FALSE));
g_assert_true (ready_time_dispatched);
ready_time_dispatched = FALSE;
/* Should have gotten reset by the handler function */
g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
/* As well as one in the recent past... */
g_source_set_ready_time (source, g_get_monotonic_time () - G_TIME_SPAN_SECOND);
while (g_main_context_iteration (NULL, FALSE));
g_assert_true (ready_time_dispatched);
ready_time_dispatched = FALSE;
g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
/* Zero is the 'official' way to get a source to fire immediately */
g_source_set_ready_time (source, 0);
while (g_main_context_iteration (NULL, FALSE));
g_assert_true (ready_time_dispatched);
ready_time_dispatched = FALSE;
g_assert_cmpint (g_source_get_ready_time (source), ==, -1);
/* Now do some tests of cross-thread wakeups.
*
* Make sure it wakes up right away from the start.
*/
g_source_set_ready_time (source, 0);
loop = g_main_loop_new (NULL, FALSE);
thread = g_thread_new ("context thread", run_context, loop);
while (!g_atomic_int_get (&ready_time_dispatched));
/* Now let's see if it can wake up from sleeping. */
g_usleep (G_TIME_SPAN_SECOND / 2);
g_atomic_int_set (&ready_time_dispatched, FALSE);
g_source_set_ready_time (source, 0);
while (!g_atomic_int_get (&ready_time_dispatched));
/* kill the thread */
g_main_loop_quit (loop);
g_thread_join (thread);
g_main_loop_unref (loop);
g_source_destroy (source);
}
static void
test_wakeup(void)
{
GMainContext *ctx;
int i;
ctx = g_main_context_new ();
/* run a random large enough number of times because
* main contexts tend to wake up a few times after creation.
*/
for (i = 0; i < 100; i++)
{
/* This is the invariant we care about:
* g_main_context_wakeup(ctx,) ensures that the next call to
* g_main_context_iteration (ctx, TRUE) returns and doesn't
* block.
* This is important in threaded apps where we might not know
* if the thread calls g_main_context_wakeup() before or after
* we enter g_main_context_iteration().
*/
g_main_context_wakeup (ctx);
g_main_context_iteration (ctx, TRUE);
}
g_main_context_unref (ctx);
}
static void
test_remove_invalid (void)
{
g_test_expect_message ("GLib", G_LOG_LEVEL_CRITICAL, "Source ID 3000000000 was not found*");
g_source_remove (3000000000u);
g_test_assert_expected_messages ();
}
static gboolean
trivial_prepare (GSource *source,
gint *timeout)
{
*timeout = 0;
return TRUE;
}
static gint n_finalized;
static void
trivial_finalize (GSource *source)
{
n_finalized++;
}
static void
test_unref_while_pending (void)
{
static GSourceFuncs funcs = { trivial_prepare, NULL, NULL, trivial_finalize };
GMainContext *context;
GSource *source;
context = g_main_context_new ();
source = g_source_new (&funcs, sizeof (GSource));
g_source_attach (source, context);
g_source_unref (source);
/* Do incomplete main iteration -- get a pending source but don't dispatch it. */
g_main_context_prepare (context, NULL);
g_main_context_query (context, 0, NULL, NULL, 0);
g_main_context_check (context, 1000, NULL, 0);
/* Destroy the context */
g_main_context_unref (context);
/* Make sure we didn't leak the source */
g_assert_cmpint (n_finalized, ==, 1);
}
#ifdef G_OS_UNIX
#include <glib-unix.h>
#include <unistd.h>
static gchar zeros[1024];
static gsize
fill_a_pipe (gint fd)
{
gsize written = 0;
GPollFD pfd;
pfd.fd = fd;
pfd.events = G_IO_OUT;
while (g_poll (&pfd, 1, 0) == 1)
/* we should never see -1 here */
written += write (fd, zeros, sizeof zeros);
return written;
}
static gboolean
write_bytes (gint fd,
GIOCondition condition,
gpointer user_data)
{
gssize *to_write = user_data;
gint limit;
if (*to_write == 0)
return FALSE;
/* Detect if we run before we should */
g_assert_cmpint (*to_write, >=, 0);
limit = MIN (*to_write, sizeof zeros);
*to_write -= write (fd, zeros, limit);
return TRUE;
}
static gboolean
read_bytes (gint fd,
GIOCondition condition,
gpointer user_data)
{
static gchar buffer[1024];
gssize *to_read = user_data;
*to_read -= read (fd, buffer, sizeof buffer);
/* The loop will exit when there is nothing else to read, then we will
* use g_source_remove() to destroy this source.
*/
return TRUE;
}
#ifdef G_OS_UNIX
static void
test_unix_fd (void)
{
gssize to_write = -1;
gssize to_read;
gint fds[2];
gint a, b;
gint s;
GSource *source_a;
GSource *source_b;
s = pipe (fds);
g_assert_cmpint (s, ==, 0);
to_read = fill_a_pipe (fds[1]);
/* write at higher priority to keep the pipe full... */
a = g_unix_fd_add_full (G_PRIORITY_HIGH, fds[1], G_IO_OUT, write_bytes, &to_write, NULL);
source_a = g_source_ref (g_main_context_find_source_by_id (NULL, a));
/* make sure no 'writes' get dispatched yet */
while (g_main_context_iteration (NULL, FALSE));
to_read += 128 * 1024 * 1024;
to_write = 128 * 1024 * 1024;
b = g_unix_fd_add (fds[0], G_IO_IN, read_bytes, &to_read);
source_b = g_source_ref (g_main_context_find_source_by_id (NULL, b));
/* Assuming the kernel isn't internally 'laggy' then there will always
* be either data to read or room in which to write. That will keep
* the loop running until all data has been read and written.
*/
while (TRUE)
{
gssize to_write_was = to_write;
gssize to_read_was = to_read;
if (!g_main_context_iteration (NULL, FALSE))
break;
/* Since the sources are at different priority, only one of them
* should possibly have run.
*/
g_assert_true (to_write == to_write_was || to_read == to_read_was);
}
g_assert_cmpint (to_write, ==, 0);
g_assert_cmpint (to_read, ==, 0);
/* 'a' is already removed by itself */
g_assert_true (g_source_is_destroyed (source_a));
g_source_unref (source_a);
g_source_remove (b);
g_assert_true (g_source_is_destroyed (source_b));
g_source_unref (source_b);
close (fds[1]);
close (fds[0]);
}
#endif
static void
assert_main_context_state (gint n_to_poll,
...)
{
GMainContext *context;
gboolean consumed[10] = { };
GPollFD poll_fds[10];
gboolean acquired;
gboolean immediate;
gint max_priority;
gint timeout;
gint n;
gint i, j;
va_list ap;
context = g_main_context_default ();
acquired = g_main_context_acquire (context);
g_assert_true (acquired);
immediate = g_main_context_prepare (context, &max_priority);
g_assert_false (immediate);
n = g_main_context_query (context, max_priority, &timeout, poll_fds, 10);
g_assert_cmpint (n, ==, n_to_poll + 1); /* one will be the gwakeup */
va_start (ap, n_to_poll);
for (i = 0; i < n_to_poll; i++)
{
gint expected_fd = va_arg (ap, gint);
GIOCondition expected_events = va_arg (ap, GIOCondition);
GIOCondition report_events = va_arg (ap, GIOCondition);
for (j = 0; j < n; j++)
if (!consumed[j] && poll_fds[j].fd == expected_fd && poll_fds[j].events == expected_events)
{
poll_fds[j].revents = report_events;
consumed[j] = TRUE;
break;
}
if (j == n)
g_error ("Unable to find fd %d (index %d) with events 0x%x", expected_fd, i, (guint) expected_events);
}
va_end (ap);
/* find the gwakeup, flag as non-ready */
for (i = 0; i < n; i++)
if (!consumed[i])
poll_fds[i].revents = 0;
if (g_main_context_check (context, max_priority, poll_fds, n))
g_main_context_dispatch (context);
g_main_context_release (context);
}
static gboolean
flag_bool (gint fd,
GIOCondition condition,
gpointer user_data)
{
gboolean *flag = user_data;
*flag = TRUE;
return TRUE;
}
static void
test_unix_fd_source (void)
{
GSource *out_source;
GSource *in_source;
GSource *source;
gboolean out, in;
gint fds[2];
gint s;
assert_main_context_state (0);
s = pipe (fds);
g_assert_cmpint (s, ==, 0);
source = g_unix_fd_source_new (fds[1], G_IO_OUT);
g_source_attach (source, NULL);
/* Check that a source with no callback gets successfully detached
* with a warning printed.
*/
g_test_expect_message ("GLib", G_LOG_LEVEL_WARNING, "*GUnixFDSource dispatched without callback*");
while (g_main_context_iteration (NULL, FALSE));
g_test_assert_expected_messages ();
g_assert_true (g_source_is_destroyed (source));
g_source_unref (source);
out = in = FALSE;
out_source = g_unix_fd_source_new (fds[1], G_IO_OUT);
/* -Wcast-function-type complains about casting 'flag_bool' to GSourceFunc.
* GCC has no way of knowing that it will be cast back to GUnixFDSourceFunc
* before being called. Although GLib itself is not compiled with
* -Wcast-function-type, applications that use GLib may well be (since
* -Wextra includes it), so we provide a G_SOURCE_FUNC() macro to suppress
* the warning. We check that it works here.
*/
#if G_GNUC_CHECK_VERSION(8, 0)
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wcast-function-type"
#endif
g_source_set_callback (out_source, G_SOURCE_FUNC (flag_bool), &out, NULL);
#if G_GNUC_CHECK_VERSION(8, 0)
#pragma GCC diagnostic pop
#endif
g_source_attach (out_source, NULL);
assert_main_context_state (1,
fds[1], G_IO_OUT, 0);
g_assert_true (!in && !out);
in_source = g_unix_fd_source_new (fds[0], G_IO_IN);
g_source_set_callback (in_source, (GSourceFunc) flag_bool, &in, NULL);
g_source_set_priority (in_source, G_PRIORITY_DEFAULT_IDLE);
g_source_attach (in_source, NULL);
assert_main_context_state (2,
fds[0], G_IO_IN, G_IO_IN,
fds[1], G_IO_OUT, G_IO_OUT);
/* out is higher priority so only it should fire */
g_assert_true (!in && out);
/* raise the priority of the in source to higher than out*/
in = out = FALSE;
g_source_set_priority (in_source, G_PRIORITY_HIGH);
assert_main_context_state (2,
fds[0], G_IO_IN, G_IO_IN,
fds[1], G_IO_OUT, G_IO_OUT);
g_assert_true (in && !out);
/* now, let them be equal */
in = out = FALSE;
g_source_set_priority (in_source, G_PRIORITY_DEFAULT);
assert_main_context_state (2,
fds[0], G_IO_IN, G_IO_IN,
fds[1], G_IO_OUT, G_IO_OUT);
g_assert_true (in && out);
g_source_destroy (out_source);
g_source_unref (out_source);
g_source_destroy (in_source);
g_source_unref (in_source);
close (fds[1]);
close (fds[0]);
}
typedef struct
{
GSource parent;
gboolean flagged;
} FlagSource;
static gboolean
return_true (GSource *source, GSourceFunc callback, gpointer user_data)
{
FlagSource *flag_source = (FlagSource *) source;
flag_source->flagged = TRUE;
return TRUE;
}
#define assert_flagged(s) g_assert_true (((FlagSource *) (s))->flagged);
#define assert_not_flagged(s) g_assert_true (!((FlagSource *) (s))->flagged);
#define clear_flag(s) ((FlagSource *) (s))->flagged = 0
static void
test_source_unix_fd_api (void)
{
GSourceFuncs no_funcs = {
NULL, NULL, return_true
};
GSource *source_a;
GSource *source_b;
gpointer tag1, tag2;
gint fds_a[2];
gint fds_b[2];
pipe (fds_a);
pipe (fds_b);
source_a = g_source_new (&no_funcs, sizeof (FlagSource));
source_b = g_source_new (&no_funcs, sizeof (FlagSource));
/* attach a source with more than one fd */
g_source_add_unix_fd (source_a, fds_a[0], G_IO_IN);
g_source_add_unix_fd (source_a, fds_a[1], G_IO_OUT);
g_source_attach (source_a, NULL);
assert_main_context_state (2,
fds_a[0], G_IO_IN, 0,
fds_a[1], G_IO_OUT, 0);
assert_not_flagged (source_a);
/* attach a higher priority source with no fds */
g_source_set_priority (source_b, G_PRIORITY_HIGH);
g_source_attach (source_b, NULL);
assert_main_context_state (2,
fds_a[0], G_IO_IN, G_IO_IN,
fds_a[1], G_IO_OUT, 0);
assert_flagged (source_a);
assert_not_flagged (source_b);
clear_flag (source_a);
/* add some fds to the second source, while attached */
tag1 = g_source_add_unix_fd (source_b, fds_b[0], G_IO_IN);
tag2 = g_source_add_unix_fd (source_b, fds_b[1], G_IO_OUT);
assert_main_context_state (4,
fds_a[0], G_IO_IN, 0,
fds_a[1], G_IO_OUT, G_IO_OUT,
fds_b[0], G_IO_IN, 0,
fds_b[1], G_IO_OUT, G_IO_OUT);
/* only 'b' (higher priority) should have dispatched */
assert_not_flagged (source_a);
assert_flagged (source_b);
clear_flag (source_b);
/* change our events on b to the same as they were before */
g_source_modify_unix_fd (source_b, tag1, G_IO_IN);
g_source_modify_unix_fd (source_b, tag2, G_IO_OUT);
assert_main_context_state (4,
fds_a[0], G_IO_IN, 0,
fds_a[1], G_IO_OUT, G_IO_OUT,
fds_b[0], G_IO_IN, 0,
fds_b[1], G_IO_OUT, G_IO_OUT);
assert_not_flagged (source_a);
assert_flagged (source_b);
clear_flag (source_b);
/* now reverse them */
g_source_modify_unix_fd (source_b, tag1, G_IO_OUT);
g_source_modify_unix_fd (source_b, tag2, G_IO_IN);
assert_main_context_state (4,
fds_a[0], G_IO_IN, 0,
fds_a[1], G_IO_OUT, G_IO_OUT,
fds_b[0], G_IO_OUT, 0,
fds_b[1], G_IO_IN, 0);
/* 'b' had no events, so 'a' can go this time */
assert_flagged (source_a);
assert_not_flagged (source_b);
clear_flag (source_a);
/* remove one of the fds from 'b' */
g_source_remove_unix_fd (source_b, tag1);
assert_main_context_state (3,
fds_a[0], G_IO_IN, 0,
fds_a[1], G_IO_OUT, 0,
fds_b[1], G_IO_IN, 0);
assert_not_flagged (source_a);
assert_not_flagged (source_b);
/* remove the other */
g_source_remove_unix_fd (source_b, tag2);
assert_main_context_state (2,
fds_a[0], G_IO_IN, 0,
fds_a[1], G_IO_OUT, 0);
assert_not_flagged (source_a);
assert_not_flagged (source_b);
/* destroy the sources */
g_source_destroy (source_a);
g_source_destroy (source_b);
assert_main_context_state (0);
g_source_unref (source_a);
g_source_unref (source_b);
close (fds_a[0]);
close (fds_a[1]);
close (fds_b[0]);
close (fds_b[1]);
}
static gboolean
unixfd_quit_loop (gint fd,
GIOCondition condition,
gpointer user_data)
{
GMainLoop *loop = user_data;
g_main_loop_quit (loop);
return FALSE;
}
static void
test_unix_file_poll (void)
{
gint fd;
GSource *source;
GMainLoop *loop;
fd = open ("/dev/null", O_RDONLY);
g_assert_cmpint (fd, >=, 0);
loop = g_main_loop_new (NULL, FALSE);
source = g_unix_fd_source_new (fd, G_IO_IN);
g_source_set_callback (source, (GSourceFunc) unixfd_quit_loop, loop, NULL);
g_source_attach (source, NULL);
/* Should not block */
g_main_loop_run (loop);
g_source_destroy (source);
assert_main_context_state (0);
g_source_unref (source);
g_main_loop_unref (loop);
close (fd);
}
#endif
#ifdef G_OS_UNIX
static gboolean
timeout_cb (gpointer data)
{
GMainLoop *loop = data;
GMainContext *context;
context = g_main_loop_get_context (loop);
g_assert_true (g_main_loop_is_running (loop));
g_assert_true (g_main_context_is_owner (context));
g_main_loop_quit (loop);
return G_SOURCE_REMOVE;
}
static gpointer
threadf (gpointer data)
{
GMainContext *context = data;
GMainLoop *loop;
GSource *source;
loop = g_main_loop_new (context, FALSE);
source = g_timeout_source_new (250);
g_source_set_callback (source, timeout_cb, loop, NULL);
g_source_attach (source, context);
g_source_unref (source);
g_main_loop_run (loop);
g_main_loop_unref (loop);
return NULL;
}
static void
test_mainloop_wait (void)
{
GMainContext *context;
GThread *t1, *t2;
context = g_main_context_new ();
t1 = g_thread_new ("t1", threadf, context);
t2 = g_thread_new ("t2", threadf, context);
g_thread_join (t1);
g_thread_join (t2);
g_main_context_unref (context);
}
#endif
static gboolean
nfds_in_cb (GIOChannel *io,
GIOCondition condition,
gpointer user_data)
{
gboolean *in_cb_ran = user_data;
*in_cb_ran = TRUE;
g_assert_cmpint (condition, ==, G_IO_IN);
return FALSE;
}
static gboolean
nfds_out_cb (GIOChannel *io,
GIOCondition condition,
gpointer user_data)
{
gboolean *out_cb_ran = user_data;
*out_cb_ran = TRUE;
g_assert_cmpint (condition, ==, G_IO_OUT);
return FALSE;
}
static gboolean
nfds_out_low_cb (GIOChannel *io,
GIOCondition condition,
gpointer user_data)
{
g_assert_not_reached ();
return FALSE;
}
static void
test_nfds (void)
{
GMainContext *ctx;
GPollFD out_fds[3];
gint fd, nfds;
GIOChannel *io;
GSource *source1, *source2, *source3;
gboolean source1_ran = FALSE, source3_ran = FALSE;
gchar *tmpfile;
GError *error = NULL;
ctx = g_main_context_new ();
nfds = g_main_context_query (ctx, G_MAXINT, NULL,
out_fds, G_N_ELEMENTS (out_fds));
/* An "empty" GMainContext will have a single GPollFD, for its
* internal GWakeup.
*/
g_assert_cmpint (nfds, ==, 1);
fd = g_file_open_tmp (NULL, &tmpfile, &error);
g_assert_no_error (error);
io = g_io_channel_unix_new (fd);
#ifdef G_OS_WIN32
/* The fd in the pollfds won't be the same fd we passed in */
g_io_channel_win32_make_pollfd (io, G_IO_IN, out_fds);
fd = out_fds[0].fd;
#endif
/* Add our first pollfd */
source1 = g_io_create_watch (io, G_IO_IN);
g_source_set_priority (source1, G_PRIORITY_DEFAULT);
g_source_set_callback (source1, (GSourceFunc) nfds_in_cb,
&source1_ran, NULL);
g_source_attach (source1, ctx);
nfds = g_main_context_query (ctx, G_MAXINT, NULL,
out_fds, G_N_ELEMENTS (out_fds));
g_assert_cmpint (nfds, ==, 2);
if (out_fds[0].fd == fd)
g_assert_cmpint (out_fds[0].events, ==, G_IO_IN);
else if (out_fds[1].fd == fd)
g_assert_cmpint (out_fds[1].events, ==, G_IO_IN);
else
g_assert_not_reached ();
/* Add a second pollfd with the same fd but different event, and
* lower priority.
*/
source2 = g_io_create_watch (io, G_IO_OUT);
g_source_set_priority (source2, G_PRIORITY_LOW);
g_source_set_callback (source2, (GSourceFunc) nfds_out_low_cb,
NULL, NULL);
g_source_attach (source2, ctx);
/* g_main_context_query() should still return only 2 pollfds,
* one of which has our fd, and a combined events field.
*/
nfds = g_main_context_query (ctx, G_MAXINT, NULL,
out_fds, G_N_ELEMENTS (out_fds));
g_assert_cmpint (nfds, ==, 2);
if (out_fds[0].fd == fd)
g_assert_cmpint (out_fds[0].events, ==, G_IO_IN | G_IO_OUT);
else if (out_fds[1].fd == fd)
g_assert_cmpint (out_fds[1].events, ==, G_IO_IN | G_IO_OUT);
else
g_assert_not_reached ();
/* But if we query with a max priority, we won't see the
* lower-priority one.
*/
nfds = g_main_context_query (ctx, G_PRIORITY_DEFAULT, NULL,
out_fds, G_N_ELEMENTS (out_fds));
g_assert_cmpint (nfds, ==, 2);
if (out_fds[0].fd == fd)
g_assert_cmpint (out_fds[0].events, ==, G_IO_IN);
else if (out_fds[1].fd == fd)
g_assert_cmpint (out_fds[1].events, ==, G_IO_IN);
else
g_assert_not_reached ();
/* Third pollfd */
source3 = g_io_create_watch (io, G_IO_OUT);
g_source_set_priority (source3, G_PRIORITY_DEFAULT);
g_source_set_callback (source3, (GSourceFunc) nfds_out_cb,
&source3_ran, NULL);
g_source_attach (source3, ctx);
nfds = g_main_context_query (ctx, G_MAXINT, NULL,
out_fds, G_N_ELEMENTS (out_fds));
g_assert_cmpint (nfds, ==, 2);
if (out_fds[0].fd == fd)
g_assert_cmpint (out_fds[0].events, ==, G_IO_IN | G_IO_OUT);
else if (out_fds[1].fd == fd)
g_assert_cmpint (out_fds[1].events, ==, G_IO_IN | G_IO_OUT);
else
g_assert_not_reached ();
/* Now actually iterate the loop; the fd should be readable and
* writable, so source1 and source3 should be triggered, but *not*
* source2, since it's lower priority than them. (Though on
* G_OS_WIN32, source3 doesn't get triggered, probably because of
* giowin32 weirdness...)
*/
g_main_context_iteration (ctx, FALSE);
g_assert_true (source1_ran);
#ifndef G_OS_WIN32
g_assert_true (source3_ran);
#endif
g_source_destroy (source1);
g_source_unref (source1);
g_source_destroy (source2);
g_source_unref (source2);
g_source_destroy (source3);
g_source_unref (source3);
g_io_channel_unref (io);
remove (tmpfile);
g_free (tmpfile);
g_main_context_unref (ctx);
}
static gboolean source_finalize_called = FALSE;
static guint source_dispose_called = 0;
static gboolean source_dispose_recycle = FALSE;
static void
finalize (GSource *source)
{
g_assert_false (source_finalize_called);
source_finalize_called = TRUE;
}
static void
dispose (GSource *source)
{
/* Dispose must always be called before finalize */
g_assert_false (source_finalize_called);
if (source_dispose_recycle)
g_source_ref (source);
source_dispose_called++;
}
static GSourceFuncs source_funcs = {
prepare,
check,
dispatch,
finalize
};
static void
test_maincontext_source_finalization (void)
{
GSource *source;
/* Check if GSource destruction without dispose function works and calls the
* finalize function as expected */
source_finalize_called = FALSE;
source_dispose_called = 0;
source_dispose_recycle = FALSE;
source = g_source_new (&source_funcs, sizeof (GSource));
g_source_unref (source);
g_assert_cmpint (source_dispose_called, ==, 0);
g_assert_true (source_finalize_called);
/* Check if GSource destruction with dispose function works and calls the
* dispose and finalize function as expected */
source_finalize_called = FALSE;
source_dispose_called = 0;
source_dispose_recycle = FALSE;
source = g_source_new (&source_funcs, sizeof (GSource));
g_source_set_dispose_function (source, dispose);
g_source_unref (source);
g_assert_cmpint (source_dispose_called, ==, 1);
g_assert_true (source_finalize_called);
/* Check if GSource destruction with dispose function works and recycling
* the source from dispose works without calling the finalize function */
source_finalize_called = FALSE;
source_dispose_called = 0;
source_dispose_recycle = TRUE;
source = g_source_new (&source_funcs, sizeof (GSource));
g_source_set_dispose_function (source, dispose);
g_source_unref (source);
g_assert_cmpint (source_dispose_called, ==, 1);
g_assert_false (source_finalize_called);
/* Check if the source is properly recycled */
g_assert_cmpint (source->ref_count, ==, 1);
/* And then get rid of it properly */
source_dispose_recycle = FALSE;
g_source_unref (source);
g_assert_cmpint (source_dispose_called, ==, 2);
g_assert_true (source_finalize_called);
}
/* GSource implementation which optionally keeps a strong reference to another
* GSource until finalization, when it destroys and unrefs the other source.
*/
typedef struct {
GSource source;
GSource *other_source;
} SourceWithSource;
static void
finalize_source_with_source (GSource *source)
{
SourceWithSource *s = (SourceWithSource *) source;
if (s->other_source)
{
g_source_destroy (s->other_source);
g_source_unref (s->other_source);
s->other_source = NULL;
}
}
static GSourceFuncs source_with_source_funcs = {
NULL,
NULL,
NULL,
finalize_source_with_source
};
static void
test_maincontext_source_finalization_from_source (gconstpointer user_data)
{
GMainContext *c = g_main_context_new ();
GSource *s1, *s2;
g_test_summary ("Tests if freeing a GSource as part of another GSource "
"during main context destruction works.");
g_test_bug ("https://gitlab.gnome.org/GNOME/glib/merge_requests/1353");
s1 = g_source_new (&source_with_source_funcs, sizeof (SourceWithSource));
s2 = g_source_new (&source_with_source_funcs, sizeof (SourceWithSource));
((SourceWithSource *)s1)->other_source = g_source_ref (s2);
/* Attach sources in a different order so they end up being destroyed
* in a different order by the main context */
if (GPOINTER_TO_INT (user_data) < 5)
{
g_source_attach (s1, c);
g_source_attach (s2, c);
}
else
{
g_source_attach (s2, c);
g_source_attach (s1, c);
}
/* Test a few different permutations here */
if (GPOINTER_TO_INT (user_data) % 5 == 0)
{
/* Get rid of our references so that destroying the context
* will unref them immediately */
g_source_unref (s1);
g_source_unref (s2);
g_main_context_unref (c);
}
else if (GPOINTER_TO_INT (user_data) % 5 == 1)
{
/* Destroy and free the sources before the context */
g_source_destroy (s1);
g_source_unref (s1);
g_source_destroy (s2);
g_source_unref (s2);
g_main_context_unref (c);
}
else if (GPOINTER_TO_INT (user_data) % 5 == 2)
{
/* Destroy and free the sources before the context */
g_source_destroy (s2);
g_source_unref (s2);
g_source_destroy (s1);
g_source_unref (s1);
g_main_context_unref (c);
}
else if (GPOINTER_TO_INT (user_data) % 5 == 3)
{
/* Destroy and free the context before the sources */
g_main_context_unref (c);
g_source_unref (s2);
g_source_unref (s1);
}
else if (GPOINTER_TO_INT (user_data) % 5 == 4)
{
/* Destroy and free the context before the sources */
g_main_context_unref (c);
g_source_unref (s1);
g_source_unref (s2);
}
}
static gboolean
dispatch_source_with_source (GSource *source, GSourceFunc callback, gpointer user_data)
{
return G_SOURCE_REMOVE;
}
static GSourceFuncs source_with_source_funcs_dispatch = {
NULL,
NULL,
dispatch_source_with_source,
finalize_source_with_source
};
static void
test_maincontext_source_finalization_from_dispatch (gconstpointer user_data)
{
GMainContext *c = g_main_context_new ();
GSource *s1, *s2;
g_test_summary ("Tests if freeing a GSource as part of another GSource "
"during main context iteration works.");
s1 = g_source_new (&source_with_source_funcs_dispatch, sizeof (SourceWithSource));
s2 = g_source_new (&source_with_source_funcs_dispatch, sizeof (SourceWithSource));
((SourceWithSource *)s1)->other_source = g_source_ref (s2);
g_source_attach (s1, c);
g_source_attach (s2, c);
if (GPOINTER_TO_INT (user_data) == 0)
{
/* This finalizes s1 as part of the iteration, which then destroys and
* frees s2 too */
g_source_set_ready_time (s1, 0);
}
else if (GPOINTER_TO_INT (user_data) == 1)
{
/* This destroys s2 as part of the iteration but does not free it as
* it's still referenced by s1 */
g_source_set_ready_time (s2, 0);
}
else if (GPOINTER_TO_INT (user_data) == 2)
{
/* This destroys both s1 and s2 as part of the iteration */
g_source_set_ready_time (s1, 0);
g_source_set_ready_time (s2, 0);
}
/* Get rid of our references so only the main context has one now */
g_source_unref (s1);
g_source_unref (s2);
/* Iterate as long as there are sources to dispatch */
while (g_main_context_iteration (c, FALSE))
{
/* Do nothing here */
}
g_main_context_unref (c);
}
int
main (int argc, char *argv[])
{
gint i;
g_test_init (&argc, &argv, NULL);
g_test_bug_base ("http://bugzilla.gnome.org/");
g_test_add_func ("/maincontext/basic", test_maincontext_basic);
g_test_add_func ("/maincontext/source_finalization", test_maincontext_source_finalization);
for (i = 0; i < 10; i++)
{
gchar *name = g_strdup_printf ("/maincontext/source_finalization_from_source/%d", i);
g_test_add_data_func (name, GINT_TO_POINTER (i), test_maincontext_source_finalization_from_source);
g_free (name);
}
for (i = 0; i < 3; i++)
{
gchar *name = g_strdup_printf ("/maincontext/source_finalization_from_dispatch/%d", i);
g_test_add_data_func (name, GINT_TO_POINTER (i), test_maincontext_source_finalization_from_dispatch);
g_free (name);
}
g_test_add_func ("/mainloop/basic", test_mainloop_basic);
g_test_add_func ("/mainloop/timeouts", test_timeouts);
g_test_add_func ("/mainloop/priorities", test_priorities);
g_test_add_func ("/mainloop/invoke", test_invoke);
g_test_add_func ("/mainloop/child_sources", test_child_sources);
g_test_add_func ("/mainloop/recursive_child_sources", test_recursive_child_sources);
g_test_add_func ("/mainloop/swapping_child_sources", test_swapping_child_sources);
g_test_add_func ("/mainloop/blocked_child_sources", test_blocked_child_sources);
g_test_add_func ("/mainloop/source_time", test_source_time);
g_test_add_func ("/mainloop/overflow", test_mainloop_overflow);
g_test_add_func ("/mainloop/ready-time", test_ready_time);
g_test_add_func ("/mainloop/wakeup", test_wakeup);
g_test_add_func ("/mainloop/remove-invalid", test_remove_invalid);
g_test_add_func ("/mainloop/unref-while-pending", test_unref_while_pending);
#ifdef G_OS_UNIX
g_test_add_func ("/mainloop/unix-fd", test_unix_fd);
g_test_add_func ("/mainloop/unix-fd-source", test_unix_fd_source);
g_test_add_func ("/mainloop/source-unix-fd-api", test_source_unix_fd_api);
g_test_add_func ("/mainloop/wait", test_mainloop_wait);
g_test_add_func ("/mainloop/unix-file-poll", test_unix_file_poll);
#endif
g_test_add_func ("/mainloop/nfds", test_nfds);
return g_test_run ();
}
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