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Compacting pool header to 8 bytes. Replaced typed pool chunks with fixed-size untyped ones. loop_arithmetics_1kk.js benchmark: 2.98517 -> 2.9443.

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This commit is contained in:
Ruben Ayrapetyan
2014-08-08 23:11:02 +04:00
parent 49a809d56f
commit 7b04e9eaeb
14 changed files with 322 additions and 397 deletions
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src/liballocator/mem-pool.h
+25 -22
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@@ -13,10 +13,6 @@
* limitations under the License.
*/
/** \addtogroup pool Memory pool
* @{
*/
#ifndef JERRY_MEM_POOL_INTERNAL
#error "Please, use mem_poolman.h instead of mem_pool.h"
#endif
@@ -24,35 +20,42 @@
#ifndef JERRY_MEM_POOL_H
#define JERRY_MEM_POOL_H
typedef uint32_t mem_pool_chunk_offset_t;
#include "mem-config.h"
/** \addtogroup pool Memory pool
* @{
*/
/**
* Get pool's space size
*/
#define MEM_POOL_SPACE_START( pool_header_p) ( (uint8_t*) ( (mem_pool_state_t*) pool_header_p + 1 ) )
/**
* Index of chunk in a pool
*/
typedef uint16_t mem_pool_chunk_index_t;
/**
* State of a memory pool
*
* TODO:
* Compact the struct
*/
typedef struct mem_pool_state_t {
uint8_t *pool_start_p; /**< first address of pool space */
size_t pool_size; /**< pool space size */
unsigned int chunks_number : MEM_POOL_MAX_CHUNKS_NUMBER_LOG; /**< number of chunks (mem_pool_chunk_index_t) */
unsigned int free_chunks_number : MEM_POOL_MAX_CHUNKS_NUMBER_LOG; /**< number of free chunks (mem_pool_chunk_index_t) */
size_t chunk_size_log; /**< log of size of one chunk */
unsigned int first_free_chunk : MEM_POOL_MAX_CHUNKS_NUMBER_LOG; /**< offset of first free chunk
from the beginning of the pool
(mem_pool_chunk_index_t) */
mem_pool_chunk_offset_t chunks_number; /**< number of chunks */
mem_pool_chunk_offset_t free_chunks_number; /**< number of free chunks */
unsigned int next_pool_cp : MEM_HEAP_OFFSET_LOG; /**< pointer to the next pool with same chunk size */
} mem_pool_state_t;
mem_pool_chunk_offset_t first_free_chunk; /**< offset of first free chunk
from the beginning of the pool */
struct mem_pool_state_t *next_pool_p; /**< pointer to the next pool with same chunk size */
} __attribute__((aligned(64))) mem_pool_state_t;
extern void mem_pool_init(mem_pool_state_t *pool_p, size_t chunk_size, uint8_t *pool_start, size_t pool_size);
extern void mem_pool_init(mem_pool_state_t *pool_p, size_t pool_size);
extern uint8_t* mem_pool_alloc_chunk(mem_pool_state_t *pool_p);
extern void mem_pool_free_chunk(mem_pool_state_t *pool_p, uint8_t *chunk_p);
#endif /* JERRY_MEM_POOL_H */
/**
* @}
*/
#endif /* JERRY_MEM_POOL_H */