/*****************************************************************************
* 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>
#include <vlc_network.h>
const char vlc_module_name[] = "test_interrupt";
static vlc_sem_t sem;
static int fds[2];
static void interrupt_callback(void *data)
{
vlc_sem_post(data);
}
static void test_context_simple(vlc_interrupt_t *ctx)
{
vlc_interrupt_t *octx;
char c;
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);
vlc_interrupt_register(interrupt_callback, &sem);
vlc_interrupt_raise(ctx);
vlc_sem_wait(&sem);
vlc_interrupt_unregister();
/* 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);
assert(vlc_mwait_i11e(1) == 0);
vlc_interrupt_raise(ctx);
assert(vlc_mwait_i11e(CLOCK_FREQ * 10000000) == EINTR);
assert(vlc_poll_i11e(NULL, 0, 1) == 0);
vlc_interrupt_raise(ctx);
assert(vlc_poll_i11e(NULL, 0, 1000000000) == -1);
assert(errno == EINTR);
c = 12;
assert(vlc_write_i11e(fds[0], &c, 1) == 1);
c = 0;
assert(vlc_read_i11e(fds[1], &c, 1) == 1 && c == 12);
vlc_interrupt_raise(ctx);
assert(vlc_read_i11e(fds[1], &c, 1) == -1);
assert(errno == EINTR);
c = 42;
assert(vlc_sendto_i11e(fds[0], &c, 1, 0, NULL, 0) == 1);
c = 0;
assert(vlc_recvfrom_i11e(fds[1], &c, 1, 0, NULL, 0) == 1 && c == 42);
vlc_interrupt_raise(ctx);
assert(vlc_recvfrom_i11e(fds[1], &c, 1, 0, NULL, 0) == -1);
assert(errno == EINTR);
vlc_interrupt_raise(ctx);
assert(vlc_accept_i11e(fds[1], NULL, NULL, true) < 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;
int canc = vlc_savecancel();
test_context_simple(ctx);
vlc_restorecancel(canc);
/* Test context clearing on cancellation */
vlc_interrupt_set(ctx);
for (;;)
pause();
vlc_assert_unreachable();
}
static void unreachable_callback(void *data)
{
(void) data;
abort();
}
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);
assert(vlc_socketpair(PF_LOCAL, SOCK_STREAM, 0, fds, false) == 0);
test_context_simple(ctx);
assert(!vlc_clone(&th, test_thread_simple, ctx));
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_join(th, NULL);
assert(!vlc_clone(&th, test_thread_cancel, ctx));
vlc_cancel(th);
vlc_join(th, NULL);
vlc_interrupt_destroy(ctx);
/* Tests without interrupt context */
vlc_sem_post(&sem);
assert(vlc_sem_wait_i11e(&sem) == 0);
assert(vlc_mwait_i11e(1) == 0);
assert(vlc_poll_i11e(NULL, 0, 1) == 0);
vlc_interrupt_register(unreachable_callback, NULL);
vlc_interrupt_unregister();
void *data[2];
vlc_interrupt_forward_start(ctx, data);
assert(vlc_interrupt_forward_stop(data) == 0);
vlc_close(fds[1]);
vlc_close(fds[0]);
return 0;
}
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