memory.hpp

#ifndef QOS_CPP_MEMORY
#define QOS_CPP_MEMORY
 
#include "include/types.hpp"
 
#ifndef Q_BYTE_ALIGNMENT
    #define Q_BYTE_ALIGNMENT        ( 8 )
#endif
 
#if ( ( Q_BYTE_ALIGNMENT != 1 ) && ( Q_BYTE_ALIGNMENT != 2 ) && ( Q_BYTE_ALIGNMENT != 4 ) && ( Q_BYTE_ALIGNMENT != 8 ) )
    #error Q_BYTE_ALIGNMENT value not allowed, use only 1,2,4 or 8(default).
#endif
 
namespace qOS {

    namespace mem {


        using address_t = size_t;
        struct blockConnect_t {
            blockConnect_t *next{ nullptr };
            size_t blockSize{ 0U };
        };

        class pool {
            private:
                blockConnect_t *end{ nullptr };
                blockConnect_t start;
                uint8_t *poolMemory{ nullptr };
                size_t poolMemSize{ 0U };
                size_t freeBytesRemaining{ 0U };
                void insertBlockIntoFreeList( blockConnect_t *xBlock ) noexcept;
                void init( void ) noexcept;
                pool( pool const& ) = delete;
                void operator=( pool const& ) = delete;
            public:
                virtual ~pool() {}
                inline pool( void *pArea, const size_t pSize ) noexcept {
                    (void)setup( pArea, pSize );
                }

                bool setup( void *pArea, const size_t pSize ) noexcept;
                void free( void *ptr ) noexcept;
                void* alloc( size_t pSize ) noexcept;
                size_t getFreeSize( void ) const noexcept;
                size_t getTotalSize( void ) const noexcept;
                void* getPoolArea( void ) const noexcept;
                bool isInitialized( void ) const {
                    return ( nullptr != poolMemory ) && ( poolMemSize > 0U );
                }

                explicit operator bool() const noexcept {
                    return isInitialized();
                }
        };

    }
}
 
    #if ( Q_DEFAULT_HEAP_SIZE >= 64 )
        void * operator new( size_t size);
        void * operator new[]( size_t size);
 
        void operator delete(void * ptr) noexcept;
        void operator delete[](void * ptr) noexcept;
 
        void operator delete(void* ptr, void* place) noexcept;
        void operator delete[](void* ptr, void* place) noexcept;
    #endif /*Q_USE_MEM_ALLOCATION_SCHEME*/
 
#endif /*QOS_CPP_MEMORY*/