Wed, 27 Feb 2013 13:30:21 +0100
added gnu++11 support
olaf@13 | 1 | /* |
olaf@13 | 2 | * |
olaf@13 | 3 | */ |
olaf@13 | 4 | |
olaf@13 | 5 | #include <stdlib.h> |
olaf@13 | 6 | #include <string.h> |
olaf@13 | 7 | #include <stdio.h> |
universe@95 | 8 | #ifdef __cplusplus |
universe@95 | 9 | #define __STDC_FORMAT_MACROS |
universe@95 | 10 | #endif |
universe@75 | 11 | #include <inttypes.h> |
olaf@13 | 12 | |
olaf@17 | 13 | #include "mempool.h" |
olaf@13 | 14 | |
olaf@13 | 15 | typedef struct { |
olaf@13 | 16 | ucx_destructor destructor; |
olaf@13 | 17 | char c; |
olaf@13 | 18 | } ucx_memchunk; |
olaf@13 | 19 | |
olaf@13 | 20 | typedef struct { |
olaf@13 | 21 | ucx_destructor destructor; |
olaf@13 | 22 | void *ptr; |
olaf@13 | 23 | } ucx_regdestr; |
olaf@13 | 24 | |
olaf@13 | 25 | void ucx_mempool_shared_destr(void* ptr) { |
olaf@13 | 26 | ucx_regdestr *rd = (ucx_regdestr*)ptr; |
olaf@13 | 27 | rd->destructor(rd->ptr); |
olaf@13 | 28 | } |
olaf@13 | 29 | |
olaf@13 | 30 | UcxMempool *ucx_mempool_new(size_t n) { |
olaf@14 | 31 | UcxMempool *pool = (UcxMempool*)malloc(sizeof(UcxMempool)); |
universe@15 | 32 | if (pool == NULL) return NULL; |
universe@15 | 33 | |
universe@69 | 34 | pool->data = (void**) malloc(n * sizeof(void*)); |
universe@15 | 35 | if (pool->data == NULL) { |
universe@15 | 36 | free(pool); |
universe@15 | 37 | return NULL; |
universe@15 | 38 | } |
universe@15 | 39 | |
olaf@13 | 40 | pool->ndata = 0; |
olaf@13 | 41 | pool->size = n; |
olaf@13 | 42 | return pool; |
olaf@13 | 43 | } |
olaf@13 | 44 | |
universe@15 | 45 | int ucx_mempool_chcap(UcxMempool *pool, size_t newcap) { |
universe@69 | 46 | void **data = (void**) realloc(pool->data, newcap*sizeof(void*)); |
universe@15 | 47 | if (data == NULL) { |
olaf@57 | 48 | return 1; |
universe@15 | 49 | } else { |
universe@15 | 50 | pool->data = data; |
universe@15 | 51 | pool->size = newcap; |
universe@15 | 52 | return EXIT_SUCCESS; |
universe@15 | 53 | } |
olaf@13 | 54 | } |
olaf@13 | 55 | |
olaf@13 | 56 | void *ucx_mempool_malloc(UcxMempool *pool, size_t n) { |
olaf@13 | 57 | ucx_memchunk *mem = (ucx_memchunk*)malloc(sizeof(ucx_destructor) + n); |
universe@15 | 58 | if (mem == NULL) return NULL; |
olaf@13 | 59 | |
olaf@13 | 60 | if (pool->ndata >= pool->size) { |
olaf@13 | 61 | ucx_mempool_chcap(pool, pool->size + 16); |
universe@15 | 62 | } |
olaf@13 | 63 | |
olaf@13 | 64 | mem->destructor = NULL; |
olaf@13 | 65 | pool->data[pool->ndata] = mem; |
olaf@13 | 66 | pool->ndata++; |
olaf@13 | 67 | |
olaf@13 | 68 | return &mem->c; |
olaf@13 | 69 | } |
olaf@13 | 70 | |
olaf@13 | 71 | void *ucx_mempool_calloc(UcxMempool *pool, size_t nelem, size_t elsize) { |
olaf@13 | 72 | void *ptr = ucx_mempool_malloc(pool, nelem*elsize); |
olaf@13 | 73 | if(ptr == NULL) { |
olaf@13 | 74 | return NULL; |
olaf@13 | 75 | } |
olaf@13 | 76 | memset(ptr, 0, nelem * elsize); |
olaf@13 | 77 | return ptr; |
olaf@13 | 78 | } |
olaf@13 | 79 | |
olaf@13 | 80 | void *ucx_mempool_realloc(UcxMempool *pool, void *ptr, size_t n) { |
universe@28 | 81 | char *mem = ((char*)ptr) - sizeof(ucx_destructor); |
universe@15 | 82 | char *newm = (char*) realloc(mem, n + sizeof(ucx_destructor)); |
olaf@14 | 83 | if (newm == NULL) return NULL; |
universe@15 | 84 | if (mem != newm) { |
universe@95 | 85 | for(size_t i=0 ; i < pool->ndata ; i++) { |
olaf@14 | 86 | if(pool->data[i] == mem) { |
olaf@14 | 87 | pool->data[i] = newm; |
universe@28 | 88 | return newm + sizeof(ucx_destructor); |
olaf@14 | 89 | } |
olaf@13 | 90 | } |
universe@95 | 91 | fprintf(stderr, "FATAL: 0x%08" PRIxPTR" not in mpool 0x%08" PRIxPTR"\n", |
universe@75 | 92 | (intptr_t)ptr, (intptr_t)pool); |
universe@15 | 93 | exit(1); |
universe@16 | 94 | } else { |
universe@28 | 95 | return newm + sizeof(ucx_destructor); |
olaf@13 | 96 | } |
olaf@13 | 97 | } |
olaf@13 | 98 | |
olaf@13 | 99 | void ucx_mempool_free(UcxMempool *pool) { |
olaf@13 | 100 | ucx_memchunk *chunk; |
universe@95 | 101 | for(size_t i=0 ; i<pool->ndata ; i++) { |
olaf@13 | 102 | chunk = (ucx_memchunk*) pool->data[i]; |
olaf@13 | 103 | if(chunk->destructor != NULL) { |
olaf@13 | 104 | chunk->destructor(&chunk->c); |
olaf@13 | 105 | } |
olaf@13 | 106 | free(chunk); |
olaf@13 | 107 | } |
olaf@13 | 108 | free(pool->data); |
olaf@13 | 109 | free(pool); |
olaf@13 | 110 | } |
olaf@13 | 111 | |
olaf@13 | 112 | void ucx_mempool_set_destr(void *ptr, ucx_destructor func) { |
olaf@13 | 113 | *(ucx_destructor*)((char*)ptr-sizeof(ucx_destructor)) = func; |
olaf@13 | 114 | } |
olaf@13 | 115 | |
olaf@13 | 116 | void ucx_mempool_reg_destr(UcxMempool *pool, void *ptr, ucx_destructor destr) { |
olaf@13 | 117 | ucx_regdestr *rd = (ucx_regdestr*)ucx_mempool_malloc( |
olaf@13 | 118 | pool, |
olaf@13 | 119 | sizeof(ucx_regdestr)); |
olaf@13 | 120 | rd->destructor = destr; |
olaf@14 | 121 | rd->ptr = ptr; |
olaf@13 | 122 | ucx_mempool_set_destr(rd, ucx_mempool_shared_destr); |
olaf@13 | 123 | } |