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396 lines
9.8 KiB
396 lines
9.8 KiB
/*
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* Copyright (c) 2013 Niels Provos and Nick Mathewson
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "event2/event-config.h"
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#include "evconfig-private.h"
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#include "tinytest.h"
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#include "tinytest_macros.h"
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#include <stdlib.h>
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#include "event2/event.h"
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#include "event2/util.h"
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#include "event-internal.h"
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#include "defer-internal.h"
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#include "regress.h"
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#include "regress_thread.h"
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static void
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timer_callback(evutil_socket_t fd, short what, void *arg)
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{
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int *int_arg = arg;
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*int_arg += 1;
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(void)fd;
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(void)what;
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}
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static void
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simple_callback(struct event_callback *evcb, void *arg)
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{
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int *int_arg = arg;
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*int_arg += 1;
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(void)evcb;
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}
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static void
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event_finalize_callback_1(struct event *ev, void *arg)
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{
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int *int_arg = arg;
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*int_arg += 100;
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(void)ev;
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}
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static void
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callback_finalize_callback_1(struct event_callback *evcb, void *arg)
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{
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int *int_arg = arg;
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*int_arg += 100;
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(void)evcb;
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}
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static void
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test_fin_cb_invoked(void *arg)
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{
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struct basic_test_data *data = arg;
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struct event_base *base = data->base;
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struct event *ev;
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struct event ev2;
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struct event_callback evcb;
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int cb_called = 0;
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int ev_called = 0;
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const struct timeval ten_sec = {10,0};
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event_deferred_cb_init_(&evcb, 0, simple_callback, &cb_called);
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ev = evtimer_new(base, timer_callback, &ev_called);
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/* Just finalize them; don't bother adding. */
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event_free_finalize(0, ev, event_finalize_callback_1);
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event_callback_finalize_(base, 0, &evcb, callback_finalize_callback_1);
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event_base_dispatch(base);
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tt_int_op(cb_called, ==, 100);
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tt_int_op(ev_called, ==, 100);
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ev_called = cb_called = 0;
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event_base_assert_ok_(base);
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/* Now try it when they're active. (actually, don't finalize: make
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* sure activation can happen! */
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ev = evtimer_new(base, timer_callback, &ev_called);
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event_deferred_cb_init_(&evcb, 0, simple_callback, &cb_called);
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event_active(ev, EV_TIMEOUT, 1);
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event_callback_activate_(base, &evcb);
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event_base_dispatch(base);
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tt_int_op(cb_called, ==, 1);
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tt_int_op(ev_called, ==, 1);
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ev_called = cb_called = 0;
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event_base_assert_ok_(base);
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/* Great, it worked. Now activate and finalize and make sure only
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* finalizing happens. */
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event_active(ev, EV_TIMEOUT, 1);
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event_callback_activate_(base, &evcb);
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event_free_finalize(0, ev, event_finalize_callback_1);
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event_callback_finalize_(base, 0, &evcb, callback_finalize_callback_1);
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event_base_dispatch(base);
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tt_int_op(cb_called, ==, 100);
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tt_int_op(ev_called, ==, 100);
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ev_called = 0;
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event_base_assert_ok_(base);
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/* Okay, now add but don't have it become active, and make sure *that*
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* works. */
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ev = evtimer_new(base, timer_callback, &ev_called);
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event_add(ev, &ten_sec);
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event_free_finalize(0, ev, event_finalize_callback_1);
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event_base_dispatch(base);
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tt_int_op(ev_called, ==, 100);
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ev_called = 0;
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event_base_assert_ok_(base);
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/* Now try adding and deleting after finalizing. */
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ev = evtimer_new(base, timer_callback, &ev_called);
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evtimer_assign(&ev2, base, timer_callback, &ev_called);
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event_add(ev, &ten_sec);
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event_free_finalize(0, ev, event_finalize_callback_1);
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event_finalize(0, &ev2, event_finalize_callback_1);
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event_add(&ev2, &ten_sec);
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event_del(ev);
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event_active(&ev2, EV_TIMEOUT, 1);
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event_base_dispatch(base);
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tt_int_op(ev_called, ==, 200);
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event_base_assert_ok_(base);
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end:
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;
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}
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#ifndef EVENT__DISABLE_MM_REPLACEMENT
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static void *
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tfff_malloc(size_t n)
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{
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return malloc(n);
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}
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static void *tfff_p1=NULL, *tfff_p2=NULL;
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static int tfff_p1_freed=0, tfff_p2_freed=0;
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static void
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tfff_free(void *p)
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{
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if (! p)
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return;
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if (p == tfff_p1)
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++tfff_p1_freed;
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if (p == tfff_p2)
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++tfff_p2_freed;
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free(p);
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}
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static void *
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tfff_realloc(void *p, size_t sz)
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{
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return realloc(p,sz);
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}
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#endif
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static void
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test_fin_free_finalize(void *arg)
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{
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#ifdef EVENT__DISABLE_MM_REPLACEMENT
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tinytest_set_test_skipped_();
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#else
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struct event_base *base = NULL;
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struct event *ev, *ev2;
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int ev_called = 0;
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int ev2_called = 0;
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(void)arg;
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event_set_mem_functions(tfff_malloc, tfff_realloc, tfff_free);
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base = event_base_new();
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tt_assert(base);
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ev = evtimer_new(base, timer_callback, &ev_called);
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ev2 = evtimer_new(base, timer_callback, &ev2_called);
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tfff_p1 = ev;
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tfff_p2 = ev2;
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event_free_finalize(0, ev, event_finalize_callback_1);
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event_finalize(0, ev2, event_finalize_callback_1);
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event_base_dispatch(base);
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tt_int_op(ev_called, ==, 100);
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tt_int_op(ev2_called, ==, 100);
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event_base_assert_ok_(base);
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tt_int_op(tfff_p1_freed, ==, 1);
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tt_int_op(tfff_p2_freed, ==, 0);
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event_free(ev2);
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end:
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if (base)
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event_base_free(base);
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#endif
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}
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/* For test_fin_within_cb */
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struct event_and_count {
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struct event *ev;
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struct event *ev2;
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int count;
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};
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static void
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event_finalize_callback_2(struct event *ev, void *arg)
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{
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struct event_and_count *evc = arg;
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evc->count += 100;
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event_free(ev);
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}
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static void
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timer_callback_2(evutil_socket_t fd, short what, void *arg)
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{
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struct event_and_count *evc = arg;
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event_finalize(0, evc->ev, event_finalize_callback_2);
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event_finalize(0, evc->ev2, event_finalize_callback_2);
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++ evc->count;
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(void)fd;
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(void)what;
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}
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static void
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test_fin_within_cb(void *arg)
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{
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struct basic_test_data *data = arg;
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struct event_base *base = data->base;
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struct event_and_count evc1, evc2;
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evc1.count = evc2.count = 0;
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evc2.ev2 = evc1.ev = evtimer_new(base, timer_callback_2, &evc1);
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evc1.ev2 = evc2.ev = evtimer_new(base, timer_callback_2, &evc2);
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/* Activate both. The first one will have its callback run, which
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* will finalize both of them, preventing the second one's callback
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* from running. */
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event_active(evc1.ev, EV_TIMEOUT, 1);
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event_active(evc2.ev, EV_TIMEOUT, 1);
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event_base_dispatch(base);
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tt_int_op(evc1.count, ==, 101);
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tt_int_op(evc2.count, ==, 100);
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event_base_assert_ok_(base);
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/* Now try with EV_PERSIST events. */
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evc1.count = evc2.count = 0;
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evc2.ev2 = evc1.ev = event_new(base, -1, EV_PERSIST, timer_callback_2, &evc1);
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evc1.ev2 = evc2.ev = event_new(base, -1, EV_PERSIST, timer_callback_2, &evc2);
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event_active(evc1.ev, EV_TIMEOUT, 1);
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event_active(evc2.ev, EV_TIMEOUT, 1);
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event_base_dispatch(base);
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tt_int_op(evc1.count, ==, 101);
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tt_int_op(evc2.count, ==, 100);
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event_base_assert_ok_(base);
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end:
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;
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}
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static void
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event_finalize_callback_free(struct event *ev, void *arg)
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{
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struct event_base *base = arg;
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int err;
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if (base) {
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err = event_assign(ev, base, -1, EV_TIMEOUT, NULL, NULL);
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tt_int_op(err, ==, 0);
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test_ok += 1;
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} else {
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free(ev);
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test_ok += 1;
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}
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end:
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;
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}
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static void
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test_fin_debug_use_after_free(void *arg)
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{
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struct basic_test_data *data = arg;
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struct event_base *base = data->base;
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struct event *ev;
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tt_ptr_op(ev = event_new(base, -1, EV_TIMEOUT, NULL, base), !=, NULL);
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tt_int_op(event_add(ev, NULL), ==, 0);
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tt_int_op(event_finalize(0, ev, event_finalize_callback_free), ==, 0);
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// Dispatch base to trigger callbacks
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event_base_dispatch(base);
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event_base_assert_ok_(base);
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tt_int_op(test_ok, ==, 1);
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// Now add again, since we did event_assign in event_finalize_callback_free
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// This used to fail in event_debug_assert_is_setup_
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tt_int_op(event_add(ev, NULL), ==, 0);
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// Finalize and dispatch again
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tt_int_op(event_finalize(0, ev, event_finalize_callback_free), ==, 0);
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event_base_dispatch(base);
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event_base_assert_ok_(base);
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tt_int_op(test_ok, ==, 2);
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end:
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;
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}
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#if 0
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static void
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timer_callback_3(evutil_socket_t *fd, short what, void *arg)
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{
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(void)fd;
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(void)what;
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}
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static void
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test_fin_many(void *arg)
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{
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struct basic_test_data *data = arg;
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struct event_base *base = data->base;
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struct event *ev1, *ev2;
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struct event_callback evcb1, evcb2;
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int ev1_count = 0, ev2_count = 0;
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int evcb1_count = 0, evcb2_count = 0;
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struct event_callback *array[4];
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int n;
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/* First attempt: call finalize_many with no events running */
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ev1 = evtimer_new(base, timer_callback, &ev1_count);
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ev1 = evtimer_new(base, timer_callback, &ev2_count);
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event_deferred_cb_init_(&evcb1, 0, simple_callback, &evcb1_called);
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event_deferred_cb_init_(&evcb2, 0, simple_callback, &evcb2_called);
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array[0] = &ev1->ev_evcallback;
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array[1] = &ev2->ev_evcallback;
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array[2] = &evcb1;
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array[3] = &evcb2;
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n = event_callback_finalize_many(base, 4, array,
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callback_finalize_callback_1);
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}
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#endif
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#define TEST(name, flags) \
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{ #name, test_fin_##name, (flags), &basic_setup, NULL }
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struct testcase_t finalize_testcases[] = {
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TEST(cb_invoked, TT_FORK|TT_NEED_BASE),
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TEST(free_finalize, TT_FORK),
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TEST(within_cb, TT_FORK|TT_NEED_BASE),
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TEST(debug_use_after_free, TT_FORK|TT_NEED_BASE|TT_ENABLE_DEBUG_MODE),
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// TEST(many, TT_FORK|TT_NEED_BASE),
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END_OF_TESTCASES
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};
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