Mon, 23 Jul 2012 15:13:19 +0200
added solaris 10 support
/* * */ #include <stdlib.h> #include <string.h> #include <stdio.h> #include <errno.h> #include "mempool.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)); if (pool == NULL) return NULL; pool->data = malloc(n * sizeof(void*)); if (pool->data == NULL) { free(pool); return NULL; } pool->ndata = 0; pool->size = n; return pool; } int ucx_mempool_chcap(UcxMempool *pool, size_t newcap) { void **data = realloc(pool->data, newcap*sizeof(void*)); if (data == NULL) { return ENOMEM; } else { pool->data = data; pool->size = newcap; return EXIT_SUCCESS; } } 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) { char *mem = ((char*)ptr) - sizeof(ucx_destructor); char *newm = (char*) realloc(mem, n + sizeof(ucx_destructor)); if (newm == NULL) return NULL; if (mem != newm) { for(int i=0;i<pool->ndata;i++) { if(pool->data[i] == mem) { pool->data[i] = newm; return newm + sizeof(ucx_destructor); } } fprintf(stderr, "FATAL: %8x not in mpool %8x\n", ptr, pool); exit(1); } else { return newm + sizeof(ucx_destructor); } } 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 = ptr; ucx_mempool_set_destr(rd, ucx_mempool_shared_destr); }