ucx: ucx/mpool.c@98ac89e3aa37 (annotated)

ucx/mpool.c@98ac89e3aa37 (annotated)

ucx/mpool.c

Sat, 31 Dec 2011 21:05:59 +0100

author: Olaf Wintermann <olaf.wintermann@gmail.com>
date: Sat, 31 Dec 2011 21:05:59 +0100
changeset 13: 98ac89e3aa37
child 14: b78e174b6814
permissions: -rw-r--r--

Added mempool

 /*
  *
  */
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 #include "mpool.h"
 typedef struct {
     ucx_destructor destructor;
     char c;
 } ucx_memchunk;
 typedef struct {
     ucx_destructor destructor;
     void           *ptr;
 } ucx_regdestr;
 void ucx_mempool_shared_destr(void* ptr) {
     ucx_regdestr *rd = (ucx_regdestr*)ptr;
     rd->destructor(rd->ptr);
 }
 UcxMempool *ucx_mempool_new(size_t n) {
     UcxMempool *pool = (UcxMempool*)malloc(sizeof(UcxMempool*));
     pool->data = malloc(n * sizeof(void*));
     pool->ndata = 0;
     pool->size = n;
     return pool;
 }
 void ucx_mempool_chcap(UcxMempool *pool, size_t newcap) {
     void **data = realloc(pool->data, newcap*sizeof(void*));
     pool->data = data;
     pool->size = newcap;
 }
 void *ucx_mempool_malloc(UcxMempool *pool, size_t n) {
     ucx_memchunk *mem = (ucx_memchunk*)malloc(sizeof(ucx_destructor) + n);
     if(mem == NULL) {
         return NULL;
     }
     if (pool->ndata >= pool->size) {
         ucx_mempool_chcap(pool, pool->size + 16);
     }
     mem->destructor = NULL;
     pool->data[pool->ndata] = mem;
     pool->ndata++;
     return &mem->c;
 }
 void *ucx_mempool_calloc(UcxMempool *pool, size_t nelem, size_t elsize) {
     void *ptr = ucx_mempool_malloc(pool, nelem*elsize);
     if(ptr == NULL) {
         return NULL;
     }
     memset(ptr, 0, nelem * elsize);
     return ptr;
 }
 void *ucx_mempool_realloc(UcxMempool *pool, void *ptr, size_t n) {
     void *mem = ((char*)ptr) - sizeof(ucx_destructor);
     for(int i=0;i<pool->ndata;i++) {
         if(pool->data[i] == mem) {
             mem == realloc(mem, n);
             pool->data[i] = mem;
             return mem;
         }
     }
 }
 void ucx_mempool_free(UcxMempool *pool) {
     ucx_memchunk *chunk;
     for(int i=0;i<pool->ndata;i++) {
         chunk = (ucx_memchunk*) pool->data[i];
         if(chunk->destructor != NULL) {
             chunk->destructor(&chunk->c);
         }
         free(chunk);
     }
     free(pool->data);
     free(pool);
 }
 void ucx_mempool_set_destr(void *ptr, ucx_destructor func) {
     *(ucx_destructor*)((char*)ptr-sizeof(ucx_destructor)) = func;
 }
 void ucx_mempool_reg_destr(UcxMempool *pool, void *ptr, ucx_destructor destr) {
     ucx_regdestr *rd = (ucx_regdestr*)ucx_mempool_malloc(
             pool,
             sizeof(ucx_regdestr));
     rd->destructor = destr;
     rd->ptr;
     ucx_mempool_set_destr(rd, ucx_mempool_shared_destr);
 }

Mercurial > hg > ucx / annotate

ucx/mpool.c@98ac89e3aa37 (annotated)

ucx/mpool.c