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/*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* Thread message API test
*/
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/frame.h"
#include "libavutil/mem.h"
#include "libavutil/threadmessage.h"
#include "libavutil/thread.h" // not public
struct sender_data {
int id;
pthread_t tid;
int workload;
AVThreadMessageQueue *queue;
};
/* same as sender_data but shuffled for testing purpose */
struct receiver_data {
pthread_t tid;
int workload;
int id;
AVThreadMessageQueue *queue;
};
struct message {
AVFrame *frame;
// we add some junk in the message to make sure the message size is >
// sizeof(void*)
int magic;
};
#define MAGIC 0xdeadc0de
static void free_frame(void *arg)
{
struct message *msg = arg;
av_assert0(msg->magic == MAGIC);
av_frame_free(&msg->frame);
}
static void *sender_thread(void *arg)
{
int i, ret = 0;
struct sender_data *wd = arg;
av_log(NULL, AV_LOG_INFO, "sender #%d: workload=%d\n", wd->id, wd->workload);
for (i = 0; i < wd->workload; i++) {
if (rand() % wd->workload < wd->workload / 10) {
av_log(NULL, AV_LOG_INFO, "sender #%d: flushing the queue\n", wd->id);
av_thread_message_flush(wd->queue);
} else {
char *val;
AVDictionary *meta = NULL;
struct message msg = {
.magic = MAGIC,
.frame = av_frame_alloc(),
};
if (!msg.frame) {
ret = AVERROR(ENOMEM);
break;
}
/* we add some metadata to identify the frames */
val = av_asprintf("frame %d/%d from sender %d",
i + 1, wd->workload, wd->id);
if (!val) {
av_frame_free(&msg.frame);
ret = AVERROR(ENOMEM);
break;
}
ret = av_dict_set(&meta, "sig", val, AV_DICT_DONT_STRDUP_VAL);
if (ret < 0) {
av_frame_free(&msg.frame);
break;
}
msg.frame->metadata = meta;
/* allocate a real frame in order to simulate "real" work */
msg.frame->format = AV_PIX_FMT_RGBA;
msg.frame->width = 320;
msg.frame->height = 240;
ret = av_frame_get_buffer(msg.frame, 0);
if (ret < 0) {
av_frame_free(&msg.frame);
break;
}
/* push the frame in the common queue */
av_log(NULL, AV_LOG_INFO, "sender #%d: sending my work (%d/%d frame:%p)\n",
wd->id, i + 1, wd->workload, msg.frame);
ret = av_thread_message_queue_send(wd->queue, &msg, 0);
if (ret < 0) {
av_frame_free(&msg.frame);
break;
}
}
}
av_log(NULL, AV_LOG_INFO, "sender #%d: my work is done here (%s)\n",
wd->id, av_err2str(ret));
av_thread_message_queue_set_err_recv(wd->queue, ret < 0 ? ret : AVERROR_EOF);
return NULL;
}
static void *receiver_thread(void *arg)
{
int i, ret = 0;
struct receiver_data *rd = arg;
for (i = 0; i < rd->workload; i++) {
if (rand() % rd->workload < rd->workload / 10) {
av_log(NULL, AV_LOG_INFO, "receiver #%d: flushing the queue, "
"discarding %d message(s)\n", rd->id,
av_thread_message_queue_nb_elems(rd->queue));
av_thread_message_flush(rd->queue);
} else {
struct message msg;
AVDictionary *meta;
AVDictionaryEntry *e;
ret = av_thread_message_queue_recv(rd->queue, &msg, 0);
if (ret < 0)
break;
av_assert0(msg.magic == MAGIC);
meta = msg.frame->metadata;
e = av_dict_get(meta, "sig", NULL, 0);
av_log(NULL, AV_LOG_INFO, "got \"%s\" (%p)\n", e->value, msg.frame);
av_frame_free(&msg.frame);
}
}
av_log(NULL, AV_LOG_INFO, "consumed enough (%d), stop\n", i);
av_thread_message_queue_set_err_send(rd->queue, ret < 0 ? ret : AVERROR_EOF);
return NULL;
}
static int get_workload(int minv, int maxv)
{
return maxv == minv ? maxv : rand() % (maxv - minv) + minv;
}
int main(int ac, char **av)
{
int i, ret = 0;
int max_queue_size;
int nb_senders, sender_min_load, sender_max_load;
int nb_receivers, receiver_min_load, receiver_max_load;
struct sender_data *senders;
struct receiver_data *receivers;
AVThreadMessageQueue *queue = NULL;
if (ac != 8) {
av_log(NULL, AV_LOG_ERROR, "%s <max_queue_size> "
"<nb_senders> <sender_min_send> <sender_max_send> "
"<nb_receivers> <receiver_min_recv> <receiver_max_recv>\n", av[0]);
return 1;
}
max_queue_size = atoi(av[1]);
nb_senders = atoi(av[2]);
sender_min_load = atoi(av[3]);
sender_max_load = atoi(av[4]);
nb_receivers = atoi(av[5]);
receiver_min_load = atoi(av[6]);
receiver_max_load = atoi(av[7]);
if (max_queue_size <= 0 ||
nb_senders <= 0 || sender_min_load <= 0 || sender_max_load <= 0 ||
nb_receivers <= 0 || receiver_min_load <= 0 || receiver_max_load <= 0) {
av_log(NULL, AV_LOG_ERROR, "negative values not allowed\n");
return 1;
}
av_log(NULL, AV_LOG_INFO, "qsize:%d / %d senders sending [%d-%d] / "
"%d receivers receiving [%d-%d]\n", max_queue_size,
nb_senders, sender_min_load, sender_max_load,
nb_receivers, receiver_min_load, receiver_max_load);
senders = av_calloc(nb_senders, sizeof(*senders));
receivers = av_calloc(nb_receivers, sizeof(*receivers));
if (!senders || !receivers) {
ret = AVERROR(ENOMEM);
goto end;
}
ret = av_thread_message_queue_alloc(&queue, max_queue_size, sizeof(struct message));
if (ret < 0)
goto end;
av_thread_message_queue_set_free_func(queue, free_frame);
#define SPAWN_THREADS(type) do { \
for (i = 0; i < nb_##type##s; i++) { \
struct type##_data *td = &type##s[i]; \
\
td->id = i; \
td->queue = queue; \
td->workload = get_workload(type##_min_load, type##_max_load); \
\
ret = pthread_create(&td->tid, NULL, type##_thread, td); \
if (ret) { \
const int err = AVERROR(ret); \
av_log(NULL, AV_LOG_ERROR, "Unable to start " AV_STRINGIFY(type) \
" thread: %s\n", av_err2str(err)); \
goto end; \
} \
} \
} while (0)
#define WAIT_THREADS(type) do { \
for (i = 0; i < nb_##type##s; i++) { \
struct type##_data *td = &type##s[i]; \
\
ret = pthread_join(td->tid, NULL); \
if (ret) { \
const int err = AVERROR(ret); \
av_log(NULL, AV_LOG_ERROR, "Unable to join " AV_STRINGIFY(type) \
" thread: %s\n", av_err2str(err)); \
goto end; \
} \
} \
} while (0)
SPAWN_THREADS(receiver);
SPAWN_THREADS(sender);
WAIT_THREADS(sender);
WAIT_THREADS(receiver);
end:
av_thread_message_queue_free(&queue);
av_freep(&senders);
av_freep(&receivers);
if (ret < 0 && ret != AVERROR_EOF) {
av_log(NULL, AV_LOG_ERROR, "Error: %s\n", av_err2str(ret));
return 1;
}
return 0;
}
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