test: test case for the previous commit

src/Makefile.am

@@ -539,6 +539,7 @@ check_PROGRAMS = \
 	test_block \
 	test_dictionary \
 	test_i18n_atof \
+	test_interrupt \
 	test_md5 \
 	test_picture_pool \
 	test_timer \
@@ -555,6 +556,8 @@ test_block_DEPENDENCIES =
 
 test_dictionary_SOURCES = test/dictionary.c
 test_i18n_atof_SOURCES = test/i18n_atof.c
+test_interrupt_SOURCES = test/interrupt.c
+test_interrupt_LDADD = $(LDADD) $(LIBS_libvlccore) $(LIBPTHREAD)
 test_md5_SOURCES = test/md5.c
 test_picture_pool_SOURCES = test/picture_pool.c
 test_timer_SOURCES = test/timer.c

src/test/interrupt.c

+/*****************************************************************************
+ * interrupt.c: Test for interrupt context API
+ *****************************************************************************
+ * Copyright (C) 2015 Rémi Denis-Courmont
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#undef NDEBUG
+#include <assert.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <vlc_common.h>
+#include <vlc_threads.h>
+#include <vlc_interrupt.h>
+
+static vlc_sem_t sem;
+
+static void test_context_simple(vlc_interrupt_t *ctx)
+{
+    vlc_interrupt_t *octx;
+
+    vlc_interrupt_set(ctx);
+    octx = vlc_interrupt_set(NULL);
+    assert(octx == ctx);
+    octx = vlc_interrupt_set(ctx);
+    assert(octx == NULL);
+    octx = vlc_interrupt_set(ctx);
+    assert(octx == ctx);
+
+    /* BIG FAT WARNING: This is only meant to test the vlc_cond_wait_i11e()
+     * function. This is NOT a good example of how to use the function in
+     * normal code. */
+    vlc_sem_post(&sem);
+    assert(vlc_sem_wait_i11e(&sem) == 0);
+
+    vlc_interrupt_raise(ctx);
+    assert(vlc_sem_wait_i11e(&sem) == EINTR);
+
+    vlc_sem_post(&sem);
+    vlc_interrupt_raise(ctx);
+    assert(vlc_sem_wait_i11e(&sem) == EINTR);
+    assert(vlc_sem_wait_i11e(&sem) == 0);
+
+    vlc_interrupt_raise(ctx);
+    vlc_sem_post(&sem);
+    assert(vlc_sem_wait_i11e(&sem) == EINTR);
+    assert(vlc_sem_wait_i11e(&sem) == 0);
+
+    octx = vlc_interrupt_set(NULL);
+    assert(octx == ctx);
+    octx = vlc_interrupt_set(NULL);
+    assert(octx == NULL);
+}
+
+static void *test_thread_simple(void *data)
+{
+    vlc_interrupt_t *ctx = data;
+
+    vlc_interrupt_set(ctx);
+    assert(vlc_sem_wait_i11e(&sem) == EINTR);
+    assert(vlc_sem_wait_i11e(&sem) == 0);
+    vlc_sem_wait(&sem);
+
+    test_context_simple(ctx);
+    return NULL;
+}
+
+static void *test_thread_cleanup(void *data)
+{
+    vlc_interrupt_t *ctx = data;
+
+    test_context_simple(ctx);
+    /* Test context clearing on exit */
+    vlc_interrupt_set(ctx);
+    return NULL;
+}
+
+static void *test_thread_cancel(void *data)
+{
+    vlc_interrupt_t *ctx = data;
+
+    test_context_simple(ctx);
+    /* Test context clearing on cancellation */
+    vlc_interrupt_set(ctx);
+    for (;;)
+        pause();
+
+    vlc_assert_unreachable();
+}
+
+int main (void)
+{
+    vlc_interrupt_t *ctx;
+    vlc_thread_t th;
+
+    alarm(2);
+
+    ctx = vlc_interrupt_create();
+    assert(ctx != NULL);
+    vlc_interrupt_destroy(ctx);
+
+    vlc_sem_init(&sem, 0);
+    ctx = vlc_interrupt_create();
+    assert(ctx != NULL);
+
+    test_context_simple(ctx);
+
+    assert(!vlc_clone(&th, test_thread_simple, ctx, VLC_THREAD_PRIORITY_LOW));
+    vlc_interrupt_raise(ctx);
+    vlc_sem_post(&sem);
+    vlc_sem_post(&sem);
+    vlc_join(th, NULL);
+
+    assert(!vlc_clone(&th, test_thread_cleanup, ctx, VLC_THREAD_PRIORITY_LOW));
+    vlc_join(th, NULL);
+
+    assert(!vlc_clone(&th, test_thread_cancel, ctx, VLC_THREAD_PRIORITY_LOW));
+    vlc_cancel(th);
+    vlc_join(th, NULL);
+
+    vlc_interrupt_destroy(ctx);
+    vlc_sem_destroy(&sem);
+    return 0;
+}