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/*
* (C) 2023 by sysmocom - s.f.m.c. GmbH.
* Authors: Holger Hans Peter Freyther
* Alexander Rehbein
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <osmocom/core/logging.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/write_queue.h>
static const struct log_info_cat default_categories[] = {
};
static const struct log_info log_info = {
.cat = default_categories,
.num_cat = ARRAY_SIZE(default_categories),
};
static void test_wqueue_limit(void)
{
struct msgb *msg;
struct osmo_wqueue wqueue;
int rc;
size_t dropped_msgs;
osmo_wqueue_init(&wqueue, 0);
OSMO_ASSERT(wqueue.max_length == 0);
OSMO_ASSERT(wqueue.current_length == 0);
OSMO_ASSERT(wqueue.read_cb == NULL);
OSMO_ASSERT(wqueue.write_cb == NULL);
OSMO_ASSERT(wqueue.except_cb == NULL);
/* try to add and fail */
msg = msgb_alloc(4096, "msg1");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc < 0);
/* add one and fail on the second */
wqueue.max_length = 1;
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 1);
msg = msgb_alloc(4096, "msg2");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc < 0);
/* add one more */
wqueue.max_length = 2;
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 2);
/* release everything */
osmo_wqueue_clear(&wqueue);
OSMO_ASSERT(wqueue.current_length == 0);
OSMO_ASSERT(wqueue.max_length == 2);
/* Add two, fail on the third, free it and the queue */
msg = msgb_alloc(4096, "msg3");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 1);
msg = msgb_alloc(4096, "msg4");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 2);
msg = msgb_alloc(4096, "msg5");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc < 0);
OSMO_ASSERT(wqueue.current_length == 2);
msgb_free(msg);
osmo_wqueue_clear(&wqueue);
/* Update limit */
OSMO_ASSERT(osmo_wqueue_set_maxlen(&wqueue, 5) == 0);
OSMO_ASSERT(osmo_wqueue_set_maxlen(&wqueue, 1) == 0);
OSMO_ASSERT(osmo_wqueue_set_maxlen(&wqueue, 4) == 0);
/* Add three, update limit to 1 */
OSMO_ASSERT(wqueue.max_length == 4);
msg = msgb_alloc(4096, "msg6");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 1);
msg = msgb_alloc(4096, "msg7");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 2);
msg = msgb_alloc(4096, "msg8");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(wqueue.current_length == 3);
dropped_msgs = osmo_wqueue_set_maxlen(&wqueue, 1);
OSMO_ASSERT(dropped_msgs == 2);
osmo_wqueue_clear(&wqueue);
/* Add three, reduce limit to 3 from 6 */
OSMO_ASSERT(osmo_wqueue_set_maxlen(&wqueue, 6) == 0);
OSMO_ASSERT(wqueue.max_length == 6);
msg = msgb_alloc(4096, "msg9");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 1);
msg = msgb_alloc(4096, "msg10");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(wqueue.current_length == 2);
msg = msgb_alloc(4096, "msg11");
rc = osmo_wqueue_enqueue(&wqueue, msg);
OSMO_ASSERT(wqueue.current_length == 3);
dropped_msgs = osmo_wqueue_set_maxlen(&wqueue, 3);
OSMO_ASSERT(dropped_msgs == 0);
osmo_wqueue_clear(&wqueue);
}
int main(int argc, char **argv)
{
struct log_target *stderr_target;
log_init(&log_info, NULL);
stderr_target = log_target_create_stderr();
log_add_target(stderr_target);
log_set_print_filename2(stderr_target, LOG_FILENAME_NONE);
log_set_print_category_hex(stderr_target, 0);
log_set_print_category(stderr_target, 0);
test_wqueue_limit();
printf("Done\n");
return 0;
}
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