universe@391: /*
universe@391:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@391:  *
universe@391:  * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
universe@391:  *
universe@391:  * Redistribution and use in source and binary forms, with or without
universe@391:  * modification, are permitted provided that the following conditions are met:
universe@391:  *
universe@391:  *   1. Redistributions of source code must retain the above copyright
universe@391:  *      notice, this list of conditions and the following disclaimer.
universe@391:  *
universe@391:  *   2. Redistributions in binary form must reproduce the above copyright
universe@391:  *      notice, this list of conditions and the following disclaimer in the
universe@391:  *      documentation and/or other materials provided with the distribution.
universe@391:  *
universe@391:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@391:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@391:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@391:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@391:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@391:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@391:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@391:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@391:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@391:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@391:  * POSSIBILITY OF SUCH DAMAGE.
universe@391:  */
universe@391: 
universe@391: #include "cx/allocator.h"
universe@391: 
universe@452: __attribute__((__malloc__, __alloc_size__(2)))
universe@508: static void *cx_malloc_stdlib(
universe@508:         __attribute__((__unused__)) void *d,
universe@508:         size_t n
universe@508: ) {
universe@397:     return malloc(n);
universe@397: }
universe@397: 
universe@452: __attribute__((__warn_unused_result__, __alloc_size__(3)))
universe@508: static void *cx_realloc_stdlib(
universe@508:         __attribute__((__unused__)) void *d,
universe@508:         void *mem,
universe@508:         size_t n
universe@508: ) {
universe@397:     return realloc(mem, n);
universe@397: }
universe@397: 
universe@452: __attribute__((__malloc__, __alloc_size__(2, 3)))
universe@508: static void *cx_calloc_stdlib(
universe@508:         __attribute__((__unused__)) void *d,
universe@508:         size_t nelem,
universe@508:         size_t n
universe@508: ) {
universe@397:     return calloc(nelem, n);
universe@397: }
universe@397: 
universe@450: __attribute__((__nonnull__))
universe@508: static void cx_free_stdlib(
universe@508:         __attribute__((__unused__)) void *d,
universe@508:         void *mem
universe@508: ) {
universe@397:     free(mem);
universe@397: }
universe@397: 
universe@450: static cx_allocator_class cx_default_allocator_class = {
universe@396:         cx_malloc_stdlib,
universe@396:         cx_realloc_stdlib,
universe@396:         cx_calloc_stdlib,
universe@396:         cx_free_stdlib
universe@396: };
universe@396: 
universe@391: struct cx_allocator_s cx_default_allocator = {
universe@396:         &cx_default_allocator_class,
universe@391:         NULL
universe@391: };
universe@500: CxAllocator *cxDefaultAllocator = &cx_default_allocator;
universe@391: 
universe@726: 
universe@726: int cx_reallocate(
universe@726:         void **mem,
universe@726:         size_t n
universe@726: ) {
universe@726:     void *nmem = realloc(*mem, n);
universe@726:     if (nmem == NULL) {
universe@726:         return 1;
universe@726:     } else {
universe@726:         *mem = nmem;
universe@726:         return 0;
universe@726:     }
universe@726: }
universe@726: 
universe@628: // IMPLEMENTATION OF HIGH LEVEL API
universe@434: 
universe@500: void *cxMalloc(
universe@508:         CxAllocator const *allocator,
universe@500:         size_t n
universe@500: ) {
universe@396:     return allocator->cl->malloc(allocator->data, n);
universe@394: }
universe@394: 
universe@500: void *cxRealloc(
universe@508:         CxAllocator const *allocator,
universe@500:         void *mem,
universe@500:         size_t n
universe@500: ) {
universe@396:     return allocator->cl->realloc(allocator->data, mem, n);
universe@394: }
universe@394: 
universe@500: int cxReallocate(
universe@508:         CxAllocator const *allocator,
universe@500:         void **mem,
universe@500:         size_t n
universe@500: ) {
universe@450:     void *nmem = allocator->cl->realloc(allocator->data, *mem, n);
universe@414:     if (nmem == NULL) {
universe@414:         return 1;
universe@414:     } else {
universe@414:         *mem = nmem;
universe@414:         return 0;
universe@414:     }
universe@414: }
universe@414: 
universe@500: void *cxCalloc(
universe@508:         CxAllocator const *allocator,
universe@500:         size_t nelem,
universe@500:         size_t n
universe@500: ) {
universe@396:     return allocator->cl->calloc(allocator->data, nelem, n);
universe@394: }
universe@394: 
universe@500: void cxFree(
universe@508:         CxAllocator const *allocator,
universe@500:         void *mem
universe@500: ) {
universe@396:     allocator->cl->free(allocator->data, mem);
universe@397: }