53 lines
794 B
C++
53 lines
794 B
C++
#ifndef SHMQUEUE_H
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#define SHMQUEUE_H
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#include "shm.h"
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#include <string>
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typedef struct __ShmQueueItem__
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{
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int cmd;
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ShmPlace data_place;
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ShmPlace next;
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ShmPlace prev;
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} ShmQueueItem;
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typedef struct __ShmQueue_
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{
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ShmPlace first;
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ShmPlace last;
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int count;
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} ShmQueueStart;
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class ShmQueue
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{
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private:
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Shm *_shm;
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private:
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ShmQueueStart *_queue;
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ShmSem *_queue_sem;
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bool _owner;
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private:
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void cleanup();
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public:
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int depth();
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public:
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bool dequeue(int &cmd, std::string &json_data, int wait_ms = 0);
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void enqueue(int cmd, const std::string &json_data);
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void enqueue(int cmd);
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public:
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void takeOwnership();
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public:
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ShmQueue(Shm *shm, ShmSlot slot, bool owner);
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~ShmQueue();
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};
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#endif // SHMQUEUE_H
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