vl_linear_pool.h

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#ifndef VL_LINEARPOOL_H
#define VL_LINEARPOOL_H
 
#include "vl_buffer.h"
 
typedef struct{
    vl_memsize_t        elementSize;    //size of each element, in bytes.
    vl_dsidx_t          totalTaken;     //total number of taken elements
 
    vl_buffer           buffer;
    vl_buffer           freeStack;      //uses the offset member as a relative stack pointer.
} vl_linearpool;
 
#define VL_POOL_INVALID_IDX VL_STRUCTURE_INDEX_MAX
 
#ifndef vlLinearPoolSample
#define vlLinearPoolSample(poolPtr, poolIndex) (vl_transient*)(((vl_usmall_t*)((poolPtr)->buffer.data) + ((poolIndex) * (poolPtr)->elementSize)))
#endif
 
typedef vl_dsidx_t vl_linearpool_idx;
 
void            vlLinearPoolInit(vl_linearpool* pool, vl_memsize_t elementSize);
 
void            vlLinearPoolFree(vl_linearpool* pool);
 
vl_linearpool*        vlLinearPoolNew(vl_memsize_t elementSize);
 
void            vlLinearPoolDelete(vl_linearpool* pool);
 
void            vlLinearPoolClear(vl_linearpool* pool);
 
vl_linearpool*        vlLinearPoolClone(const vl_linearpool* src, vl_linearpool* dest);
 
void            vlLinearPoolReserve(vl_linearpool* pool, vl_memsize_t n);
 
vl_linearpool_idx     vlLinearPoolTellIndex(vl_linearpool* pool, const vl_transient* dataPtr);
 
vl_linearpool_idx     vlLinearPoolTake(vl_linearpool* pool);
 
void            vlLinearPoolReturn(vl_linearpool* pool, vl_linearpool_idx offset);
 
#endif //VL_LINEARPOOL_H