src/allocator.c

Sun, 03 Oct 2021 12:02:57 +0200

author
Mike Becker <universe@uap-core.de>
date
Sun, 03 Oct 2021 12:02:57 +0200
changeset 450
7960298039cf
parent 434
38ee262e8b94
child 452
a10c3e127050
permissions
-rw-r--r--

improves usage of attributes

universe@391 1 /*
universe@391 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@391 3 *
universe@391 4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
universe@391 5 *
universe@391 6 * Redistribution and use in source and binary forms, with or without
universe@391 7 * modification, are permitted provided that the following conditions are met:
universe@391 8 *
universe@391 9 * 1. Redistributions of source code must retain the above copyright
universe@391 10 * notice, this list of conditions and the following disclaimer.
universe@391 11 *
universe@391 12 * 2. Redistributions in binary form must reproduce the above copyright
universe@391 13 * notice, this list of conditions and the following disclaimer in the
universe@391 14 * documentation and/or other materials provided with the distribution.
universe@391 15 *
universe@391 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@391 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@391 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@391 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@391 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@391 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@391 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@391 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@391 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@391 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@391 26 * POSSIBILITY OF SUCH DAMAGE.
universe@391 27 */
universe@391 28
universe@391 29 #include "cx/allocator.h"
universe@391 30
universe@391 31 #include <stdlib.h>
universe@391 32
universe@450 33 __attribute__((__malloc__))
universe@450 34 static void *cx_malloc_stdlib(__attribute__((__unused__)) void *d, size_t n) {
universe@397 35 return malloc(n);
universe@397 36 }
universe@397 37
universe@450 38 __attribute__((__warn_unused_result__))
universe@450 39 static void *cx_realloc_stdlib(__attribute__((__unused__)) void *d, void *mem, size_t n) {
universe@397 40 return realloc(mem, n);
universe@397 41 }
universe@397 42
universe@450 43 __attribute__((__malloc__))
universe@450 44 static void *cx_calloc_stdlib(__attribute__((__unused__)) void *d, size_t nelem, size_t n) {
universe@397 45 return calloc(nelem, n);
universe@397 46 }
universe@397 47
universe@450 48 __attribute__((__nonnull__))
universe@450 49 static void cx_free_stdlib(__attribute__((__unused__)) void *d, void *mem) {
universe@397 50 free(mem);
universe@397 51 }
universe@397 52
universe@450 53 static cx_allocator_class cx_default_allocator_class = {
universe@396 54 cx_malloc_stdlib,
universe@396 55 cx_realloc_stdlib,
universe@396 56 cx_calloc_stdlib,
universe@396 57 cx_free_stdlib
universe@396 58 };
universe@396 59
universe@391 60 struct cx_allocator_s cx_default_allocator = {
universe@396 61 &cx_default_allocator_class,
universe@391 62 NULL
universe@391 63 };
universe@391 64 CxAllocator cxDefaultAllocator = &cx_default_allocator;
universe@391 65
universe@434 66 /* IMPLEMENTATION OF HIGH LEVEL API */
universe@434 67
universe@397 68 void *cxMalloc(CxAllocator allocator, size_t n) {
universe@396 69 return allocator->cl->malloc(allocator->data, n);
universe@394 70 }
universe@394 71
universe@397 72 void *cxRealloc(CxAllocator allocator, void *mem, size_t n) {
universe@396 73 return allocator->cl->realloc(allocator->data, mem, n);
universe@394 74 }
universe@394 75
universe@414 76 int cxReallocate(CxAllocator allocator, void **mem, size_t n) {
universe@450 77 void *nmem = allocator->cl->realloc(allocator->data, *mem, n);
universe@414 78 if (nmem == NULL) {
universe@414 79 return 1;
universe@414 80 } else {
universe@414 81 *mem = nmem;
universe@414 82 return 0;
universe@414 83 }
universe@414 84 }
universe@414 85
universe@397 86 void *cxCalloc(CxAllocator allocator, size_t nelem, size_t n) {
universe@396 87 return allocator->cl->calloc(allocator->data, nelem, n);
universe@394 88 }
universe@394 89
universe@397 90 void cxFree(CxAllocator allocator, void *mem) {
universe@396 91 allocator->cl->free(allocator->data, mem);
universe@397 92 }

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