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使用共享锁来标记环形缓冲区是否正在被使用

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guo_peixu
2022-06-17 18:14:24 +08:00
parent 0ce7424fa1
commit 93c07a240b
4 changed files with 56 additions and 87 deletions
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4
inc/MESA_shm_ring_queue.h
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@@ -1,5 +1,7 @@
#ifndef _MESA_SHM_RING_QUEUE_H_
#define _MESA_SHM_RING_QUEUE_H_
#include <pthread.h>
#define MESA_SHM_RING_QUEUE_NUM 128
#define MESA_SHM_RING_QUEUE_BLOCK_NUM 8192
#define MESA_SHM_RING_QUEUE_BLOCK_BUFLEN 4096
@@ -27,7 +29,7 @@ struct MESA_shm_overview{
int shmkey;
int shmid;
int idx;
volatile char status;
pthread_mutex_t mutex;
};
struct MESA_shm_queue_head{