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/*
* Copyright (C) ST-Ericsson SA 2010
* Author: Jean-Philippe FASSINO <jean-philippe.fassino@stericsson.com> for ST-Ericsson.
* License terms: GNU General Public License (GPL) version 2.
*/
/*
* Include
*/
#include <cm/inc/cm_type.h>
#include "../inc/chunk_mgr.h"
#include <cm/engine/trace/inc/trace.h>
#define CHUNKS_PER_PAGE 500
#define CHUNK_THRESOLD 5
struct t_page_chuncks {
struct t_page_chuncks *nextPage;
// unsigned int freeChunkInPage;
t_cm_chunk chunks[CHUNKS_PER_PAGE];
};
static struct t_page_chuncks *firstPage = 0;
static unsigned int freeChunks = 0;
static t_cm_chunk *firstFreeChunk = 0;
t_cm_chunk* allocChunk()
{
t_cm_chunk* chunk = firstFreeChunk;
firstFreeChunk = chunk->next;
chunk->next_free_mem = 0;
chunk->prev_free_mem = 0;
chunk->prev = 0;
chunk->next = 0;
chunk->status = MEM_FREE;
// chunk->offset = 0;
// chunk->size = 0;
// chunk->alloc = 0;
// chunk->userData = 0;
freeChunks--;
return chunk;
}
void freeChunk(t_cm_chunk* chunk)
{
// Link chunk in free list
chunk->next = firstFreeChunk;
firstFreeChunk = chunk;
// Increase counter
freeChunks++;
}
t_cm_error allocChunkPool(void)
{
struct t_page_chuncks* newPage;
int i;
newPage = (struct t_page_chuncks*)OSAL_Alloc(sizeof(struct t_page_chuncks));
if(newPage == NULL)
return CM_NO_MORE_MEMORY;
// Link page
newPage->nextPage = firstPage;
firstPage = newPage;
// Put chunk in free list
for(i = 0; i < CHUNKS_PER_PAGE; i++)
freeChunk(&newPage->chunks[i]);
return CM_OK;
}
t_cm_error fillChunkPool(void)
{
if(freeChunks < CHUNK_THRESOLD)
return allocChunkPool();
return CM_OK;
}
void freeChunkPool(void)
{
while(firstPage != NULL)
{
struct t_page_chuncks* tofree = firstPage;
firstPage = firstPage->nextPage;
OSAL_Free(tofree);
}
firstFreeChunk = 0;
freeChunks = 0;
}
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