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2017-08-30 71c92f101b6c8b4a678a8c3cfe2d8edbf488efa4

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#ifndef _PreAllocBufferPriorityQueue_H_ 
#define _PreAllocBufferPriorityQueue_H_ 
 
#include <cstdint> 
#include <vector> 
#include <list> 
 
class PreAllocBufferPriorityQueue 
{ 
public: 
    struct Config 
    { 
        bool multithreadSafe; 
        bool fullQueueDropFront; 
        bool fullQueueSync; 
        size_t count; 
        size_t maxBuffSize; 
 
        Config() 
            : multithreadSafe(false), fullQueueDropFront(false), fullQueueSync(false), count(0), maxBuffSize(0) 
        { } 
    }; 
 
    struct Buffer 
    { 
        uint8_t* buffer; 
        size_t buffSize; 
 
        Buffer() : buffer(nullptr), buffSize(0) { } 
    }; 
 
    PreAllocBufferPriorityQueue(const Config& _cfg); 
 
    ~PreAllocBufferPriorityQueue(); 
 
    Buffer* Seek(); 
 
    Buffer* Dequeue(); 
    void Release(Buffer* buffer); 
 
    Buffer* Enqueue(); 
     
    bool Empty() const; 
    bool Full() const; 
 
private: 
    const Config cfg; 
    void* mtsMux; 
 
    typedef std::vector<Buffer*> buffers_vec_t; 
    buffers_vec_t allBuffers; 
    buffers_vec_t freeBuffers; 
 
    typedef std::list<Buffer*> buffers_lst_t; 
    buffers_lst_t usedBuffers; 
}; 
 
#endif