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User are able to customize the number of elements of a mempool globaly.

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Patrick Pelissier committed 2018-07-30 22:02:46 +02:00
1 parent 04dd708941
commit b6a3387f8a
1 file changed
+12 -8
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m-mempool.h
+12 -8
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@@ -27,7 +27,7 @@
#include "m-core.h"
/* Fast Fixed Size thread unsafe allocator.
/* Fast Fixed Size thread unsafe allocator based on memory region.
USAGE:
MEMPOOL_DEF(memppol_uint, unsigned int)
...
@@ -50,7 +50,7 @@
typedef struct M_C(name,_segment_s) { \
unsigned int count; \
struct M_C(name,_segment_s) *next; \
M_C(name,_union_t) tab[MEMPOOLI_MAX_PER_SEGMENT(type)]; \
M_C(name,_union_t) tab[MEMPOOL_MAX_PER_SEGMENT(type)]; \
} M_C(name,_segment_t); \
\
typedef struct M_C(name, _s) { \
@@ -99,7 +99,7 @@
M_C(name,_segment_t) *segment = mem->current_segment; \
assert(segment != NULL); \
unsigned int count = segment->count; \
if (M_UNLIKELY (count >= MEMPOOLI_MAX_PER_SEGMENT(type))) { \
if (M_UNLIKELY (count >= MEMPOOL_MAX_PER_SEGMENT(type))) { \
M_C(name,_segment_t) *new_segment = M_MEMORY_ALLOC (M_C(name,_segment_t)); \
if (M_UNLIKELY (new_segment == NULL)) { \
M_MEMORY_FULL(sizeof (M_C(name,_segment_t))); \
@@ -129,17 +129,21 @@
MEMPOOLI_CONTRACT(mem, type); \
} \
/* User shall be able to cutomize the size of the segment and/or
the minimun number of elements.
*/
#ifndef MEMPOOL_MAX_PER_SEGMENT
#define MEMPOOL_MAX_PER_SEGMENT(type) \
M_MAX((16*1024-sizeof(unsigned int) - 2*sizeof(void*)) / sizeof (type), 256U)
#endif
/********************************** INTERNAL ************************************/
// TODO: user shall be able to cutomize the size of the segment and/or
// the minimun number of elements... i.e. all the formula!
#define MEMPOOLI_MAX_PER_SEGMENT(type) \
M_MAX((16*1024-sizeof(unsigned int) - 2*sizeof(void*)) / sizeof (type), 256U)
#define MEMPOOLI_CONTRACT(mempool, type) do { \
assert((mempool) != NULL); \
assert((mempool)->current_segment != NULL); \
assert((mempool)->current_segment->count <= MEMPOOLI_MAX_PER_SEGMENT(type)); \
assert((mempool)->current_segment->count <= MEMPOOL_MAX_PER_SEGMENT(type)); \
} while (0)
#endif