memory_types.h

Go to the documentation of this file.

#ifndef JUNO_MEMORY_H
#define JUNO_MEMORY_H
 
#include "juno/macros.h"
#include <stddef.h>
#include <stdint.h>
#include "stddef.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define JUNO_MEMORY_BLOCK(name, type, length) \
static type name[length] = {};
 
#define JUNO_MEMORY_BLOCK_METADATA(name, length) \
static JUNO_MEMORY_BLOCK_METADATA_T name[length] = {};
 
#define JUNO_REF(name) REF##name
#define JUNO_NEW_REF(name) JUNO_MEMORY_T *JUNO_REF(name)
 
typedef struct JUNO_MEMORY_BLOCK_METADATA_TAG JUNO_MEMORY_BLOCK_METADATA_T;
typedef struct JUNO_MEMORY_BLOCK_TAG JUNO_MEMORY_BLOCK_T;
typedef struct JUNO_MEMORY_ALLOC_HDR_TAG JUNO_MEMORY_ALLOC_HDR_T;
typedef struct JUNO_MEMORY_TAG JUNO_MEMORY_T;
 
#ifndef JUNO_CUSTOM_ALLOC
typedef union JUNO_MEMORY_ALLOC_TAG JUNO_MEMORY_ALLOC_T;
#endif
 
typedef enum JUNO_MEMORY_ALLOC_TYPE_TAG
{
    JUNO_MEMORY_ALLOC_TYPE_RESERVED = 0, 
    JUNO_MEMORY_ALLOC_TYPE_BLOCK    = 1, 
} JUNO_MEMORY_ALLOC_TYPE_T;
 
struct JUNO_MEMORY_BLOCK_METADATA_TAG
{
    uint8_t *ptFreeMem;
};
 
struct JUNO_MEMORY_ALLOC_HDR_TAG
{
    JUNO_MEMORY_ALLOC_TYPE_T tType; 
};
 
struct JUNO_MEMORY_TAG
{
    void *pvAddr;
    size_t zSize;
    size_t iRefCount;
};
 
 
 
struct JUNO_MEMORY_BLOCK_TAG
{
    JUNO_MEMORY_ALLOC_HDR_T tHdr;       
    uint8_t *pvMemory;                  
    JUNO_MEMORY_BLOCK_METADATA_T *ptMetadata; 
    size_t zTypeSize;                   
    size_t zLength;                     
    size_t zUsed;                       
    size_t zFreed;                      
    DECLARE_FAILURE_HANDLER;            
};
 
#ifndef JUNO_CUSTOM_ALLOC
union JUNO_MEMORY_ALLOC_TAG
{
    JUNO_MEMORY_ALLOC_HDR_T tHdr; 
    JUNO_MEMORY_BLOCK_T tBlock;   
};
#endif
 
static inline JUNO_MEMORY_T * Juno_MemoryGetRef(JUNO_MEMORY_T *ptMemory)
{
    if(ptMemory->iRefCount)
    {
        ptMemory->iRefCount += 1;
    }
    return ptMemory;
}
 
static inline void Juno_MemoryPutRef(JUNO_MEMORY_T *ptMemory)
{
    if(ptMemory->iRefCount)
    {
        ptMemory->iRefCount -= 1;
    }
}
 
#ifdef __cplusplus
}
#endif
#endif