Mon, 14 May 2018 18:12:14 +0200
renames ucx_strcmp() to ucx_cmp_str()
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "ucx/mempool.h" #include <stdlib.h> #include <string.h> #include <stdio.h> #ifdef __cplusplus #define __STDC_FORMAT_MACROS #endif #include <inttypes.h> /** Capsule for destructible memory chunks. */ typedef struct { /** The destructor for the memory chunk. */ ucx_destructor destructor; /** * First byte of the memory chunk. * Note, that the address <code>&c</code> is also the address * of the whole memory chunk. */ char c; } ucx_memchunk; /** Capsule for data and its destructor. */ typedef struct { /** The destructor for the data. */ ucx_destructor destructor; /** A pointer to the data. */ void *ptr; } ucx_regdestr; #ifdef __cplusplus extern "C" #endif void ucx_mempool_shared_destr(void* ptr) { ucx_regdestr *rd = (ucx_regdestr*)ptr; rd->destructor(rd->ptr); } UcxMempool *ucx_mempool_new(size_t n) { size_t poolsz; if(ucx_szmul(n, sizeof(void*), &poolsz)) { return NULL; } UcxMempool *pool = (UcxMempool*)malloc(sizeof(UcxMempool)); if (!pool) { return NULL; } pool->data = (void**) malloc(poolsz); if (pool->data == NULL) { free(pool); return NULL; } pool->ndata = 0; pool->size = n; UcxAllocator *allocator = (UcxAllocator*)malloc(sizeof(UcxAllocator)); if(!allocator) { free(pool->data); free(pool); return NULL; } allocator->malloc = (ucx_allocator_malloc)ucx_mempool_malloc; allocator->calloc = (ucx_allocator_calloc)ucx_mempool_calloc; allocator->realloc = (ucx_allocator_realloc)ucx_mempool_realloc; allocator->free = (ucx_allocator_free)ucx_mempool_free; allocator->pool = pool; pool->allocator = allocator; return pool; } int ucx_mempool_chcap(UcxMempool *pool, size_t newcap) { if (newcap < pool->ndata) { return 1; } size_t newcapsz; if(ucx_szmul(newcap, sizeof(void*), &newcapsz)) { return 1; } void **data = (void**) realloc(pool->data, newcapsz); if (data) { pool->data = data; pool->size = newcap; return 0; } else { return 1; } } void *ucx_mempool_malloc(UcxMempool *pool, size_t n) { if(((size_t)-1) - sizeof(ucx_destructor) < n) { return NULL; } if (pool->ndata >= pool->size) { size_t newcap = pool->size*2; if (newcap < pool->size || ucx_mempool_chcap(pool, newcap)) { return NULL; } } void *p = malloc(sizeof(ucx_destructor) + n); ucx_memchunk *mem = (ucx_memchunk*)p; if (!mem) { return NULL; } 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) { size_t msz; if(ucx_szmul(nelem, elsize, &msz)) { return NULL; } void *ptr = ucx_mempool_malloc(pool, msz); if (!ptr) { return NULL; } memset(ptr, 0, nelem * elsize); return ptr; } void *ucx_mempool_realloc(UcxMempool *pool, void *ptr, size_t n) { if(((size_t)-1) - sizeof(ucx_destructor) < n) { return NULL; } char *mem = ((char*)ptr) - sizeof(ucx_destructor); char *newm = (char*) realloc(mem, n + sizeof(ucx_destructor)); if (!newm) { return NULL; } if (mem != newm) { for(size_t i=0 ; i < pool->ndata ; i++) { if(pool->data[i] == mem) { pool->data[i] = newm; return newm + sizeof(ucx_destructor); } } fprintf(stderr, "FATAL: 0x%08" PRIxPTR" not in mpool 0x%08" PRIxPTR"\n", (intptr_t)ptr, (intptr_t)pool); abort(); } else { return newm + sizeof(ucx_destructor); } } void ucx_mempool_free(UcxMempool *pool, void *ptr) { ucx_memchunk *chunk = (ucx_memchunk*)((char*)ptr-sizeof(ucx_destructor)); for(size_t i=0 ; i<pool->ndata ; i++) { if(chunk == pool->data[i]) { if(chunk->destructor != NULL) { chunk->destructor(&(chunk->c)); } free(chunk); size_t last_index = pool->ndata - 1; if(i != last_index) { pool->data[i] = pool->data[last_index]; pool->data[last_index] = NULL; } pool->ndata--; return; } } fprintf(stderr, "FATAL: 0x%08" PRIxPTR" not in mpool 0x%08" PRIxPTR"\n", (intptr_t)ptr, (intptr_t)pool); abort(); } void ucx_mempool_destroy(UcxMempool *pool) { ucx_memchunk *chunk; for(size_t i=0 ; i<pool->ndata ; i++) { chunk = (ucx_memchunk*) pool->data[i]; if(chunk) { if(chunk->destructor) { chunk->destructor(&(chunk->c)); } free(chunk); } } free(pool->data); free(pool->allocator); 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); }