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Copy pathblockingqueue.c
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137 lines (100 loc) · 2.93 KB
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#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "base.h"
#include "queue.h"
static void BlockingQueue_add(IQueue* queue, int elem);
static int BlockingQueue_remove(IQueue* queue);
static int BlockingQueue_empty(IQueue* queue);
BlockingQueue* newBlockingQueue(IQueue* queue)
{
BlockingQueue* blockingQueue = (BlockingQueue*)malloc(sizeof(BlockingQueue));
if (blockingQueue == NULL) {
return NULL;
}
blockingQueue->queue = queue;
int err = pthread_mutex_init(&blockingQueue->mutex, NULL);
if (err) {
perror(strerror(err));
exit(1);
}
err = pthread_cond_init(&blockingQueue->cond, NULL);
if (err) {
perror(strerror(err));
exit(1);
}
blockingQueue->iqueue.add = BlockingQueue_add;
blockingQueue->iqueue.remove = BlockingQueue_remove;
blockingQueue->iqueue.empty = BlockingQueue_empty;
return blockingQueue;
}
BlockingQueue* newDefBlockingQueue()
{
LinkedQueue* linkedQueue = newDefLinkedQueue();
if (linkedQueue == NULL) {
return NULL;
}
return newBlockingQueue(&linkedQueue->iqueue);
}
void deleteBlockingQueue(BlockingQueue* queue)
{
int err = pthread_cond_destroy(&queue->cond);
if (err) {
perror(strerror(err));
}
err = pthread_mutex_destroy(&queue->mutex);
if (err) {
perror(strerror(err));
}
free(queue);
}
void deleteDefBlockingQueue(BlockingQueue* queue)
{
LinkedQueue* linkedQueue = container_of(queue->queue, LinkedQueue, iqueue);
deleteLinkedQueue(linkedQueue);
deleteBlockingQueue(queue);
}
void BlockingQueue_add(IQueue* queue, int elem)
{
BlockingQueue* blockingQueue = container_of(queue, BlockingQueue, iqueue);
int err = pthread_mutex_lock(&blockingQueue->mutex);
if (err) {
perror(strerror(err));
}
blockingQueue->queue->add(blockingQueue->queue, elem);
err = pthread_mutex_unlock(&blockingQueue->mutex);
if (err) {
perror(strerror(err));
}
err = pthread_cond_signal(&blockingQueue->cond);
if (err) {
perror(strerror(err));
}
}
int BlockingQueue_remove(IQueue* queue)
{
BlockingQueue* blockingQueue = container_of(queue, BlockingQueue, iqueue);
int err = pthread_mutex_lock(&blockingQueue->mutex);
if (err) {
perror(strerror(err));
}
while (blockingQueue->iqueue.empty(&blockingQueue->iqueue)) {
err = pthread_cond_wait(&blockingQueue->cond, &blockingQueue->mutex);
if (err) {
perror(strerror(err));
}
}
int value = blockingQueue->queue->remove(blockingQueue->queue);
err = pthread_mutex_unlock(&blockingQueue->mutex);
if (err) {
perror(strerror(err));
}
return value;
}
int BlockingQueue_empty(IQueue* queue)
{
BlockingQueue* blockingQueue = container_of(queue, BlockingQueue, iqueue);
return blockingQueue->queue->empty(blockingQueue->queue);
}