GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/dnn/safe_queue.c Lines: 0 40 0.0 %
Date: 2021-04-18 10:33:33 Branches: 0 10 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2020
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include <stdio.h>
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#include "queue.h"
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#include "safe_queue.h"
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#include "libavutil/mem.h"
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#include "libavutil/avassert.h"
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#include "libavutil/thread.h"
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#if HAVE_PTHREAD_CANCEL
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#define DNNCond pthread_cond_t
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#define dnn_cond_init pthread_cond_init
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#define dnn_cond_destroy pthread_cond_destroy
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#define dnn_cond_signal pthread_cond_signal
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#define dnn_cond_wait pthread_cond_wait
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#else
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#define DNNCond char
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static inline int dnn_cond_init(DNNCond *cond, const void *attr) { return 0; }
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static inline int dnn_cond_destroy(DNNCond *cond) { return 0; }
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static inline int dnn_cond_signal(DNNCond *cond) { return 0; }
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static inline int dnn_cond_wait(DNNCond *cond, AVMutex *mutex)
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{
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    av_assert0(!"should not reach here");
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    return 0;
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}
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#endif
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struct SafeQueue {
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    Queue *q;
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    AVMutex mutex;
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    DNNCond cond;
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};
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SafeQueue *ff_safe_queue_create(void)
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{
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    SafeQueue *sq = av_malloc(sizeof(*sq));
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    if (!sq)
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        return NULL;
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    sq->q = ff_queue_create();
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    if (!sq->q) {
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        av_freep(&sq);
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        return NULL;
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    }
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    ff_mutex_init(&sq->mutex, NULL);
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    dnn_cond_init(&sq->cond, NULL);
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    return sq;
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}
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void ff_safe_queue_destroy(SafeQueue *sq)
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{
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    if (!sq)
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        return;
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    ff_queue_destroy(sq->q);
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    ff_mutex_destroy(&sq->mutex);
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    dnn_cond_destroy(&sq->cond);
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    av_freep(&sq);
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}
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size_t ff_safe_queue_size(SafeQueue *sq)
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{
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    return sq ? ff_queue_size(sq->q) : 0;
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}
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int ff_safe_queue_push_front(SafeQueue *sq, void *v)
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{
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    int ret;
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    ff_mutex_lock(&sq->mutex);
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    ret = ff_queue_push_front(sq->q, v);
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    dnn_cond_signal(&sq->cond);
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    ff_mutex_unlock(&sq->mutex);
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    return ret;
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}
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int ff_safe_queue_push_back(SafeQueue *sq, void *v)
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{
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    int ret;
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    ff_mutex_lock(&sq->mutex);
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    ret = ff_queue_push_back(sq->q, v);
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    dnn_cond_signal(&sq->cond);
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    ff_mutex_unlock(&sq->mutex);
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    return ret;
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}
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void *ff_safe_queue_pop_front(SafeQueue *sq)
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{
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    void *value;
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    ff_mutex_lock(&sq->mutex);
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    while (ff_queue_size(sq->q) == 0) {
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        dnn_cond_wait(&sq->cond, &sq->mutex);
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    }
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    value = ff_queue_pop_front(sq->q);
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    dnn_cond_signal(&sq->cond);
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    ff_mutex_unlock(&sq->mutex);
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    return value;
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}