PagePool.h

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#ifndef PAGEPOOL_H
#define PAGEPOOL_H

#include <PtMutex.h>

BOREALIS_NAMESPACE_BEGIN;

class PagePool {
  public:
    PagePool(unsigned int page_size, unsigned int capacity,
             bool locked = true);

    ~PagePool();

    void *alloc();

    void free(void *);

    unsigned int page_size() const { return _page_size; }

    unsigned int capacity() const { return _capacity; }

    unsigned int alloced_pages() const { return _alloced_pages; }

    unsigned int free_pages() const { return _capacity - _alloced_pages; }

    void dump() const;
    void dumpNoFreeList() const;

  private:
    struct FreeNode {
        FreeNode *next;
    };

    unsigned int _page_size;
    unsigned int _capacity;
    unsigned int _alloced_pages;

    void *_block;
    unsigned int _block_size;
    bool _locked;
    FreeNode *_free_list;

    PtMutex _mutex;
};

BOREALIS_NAMESPACE_END;

#endif

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