ucx: src/allocator.c@7960298039cf

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.

     5  *

     6  * Redistribution and use in source and binary forms, with or without

     7  * modification, are permitted provided that the following conditions are met:

     8  *

     9  *   1. Redistributions of source code must retain the above copyright

    10  *      notice, this list of conditions and the following disclaimer.

    11  *

    12  *   2. Redistributions in binary form must reproduce the above copyright

    13  *      notice, this list of conditions and the following disclaimer in the

    14  *      documentation and/or other materials provided with the distribution.

    15  *

    16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    26  * POSSIBILITY OF SUCH DAMAGE.

    27  */

    29 #include "cx/allocator.h"

    31 #include <stdlib.h>

    33 __attribute__((__malloc__))

    34 static void *cx_malloc_stdlib(__attribute__((__unused__)) void *d, size_t n) {

    35     return malloc(n);

    36 }

    38 __attribute__((__warn_unused_result__))

    39 static void *cx_realloc_stdlib(__attribute__((__unused__)) void *d, void *mem, size_t n) {

    40     return realloc(mem, n);

    41 }

    43 __attribute__((__malloc__))

    44 static void *cx_calloc_stdlib(__attribute__((__unused__)) void *d, size_t nelem, size_t n) {

    45     return calloc(nelem, n);

    46 }

    48 __attribute__((__nonnull__))

    49 static void cx_free_stdlib(__attribute__((__unused__)) void *d, void *mem) {

    50     free(mem);

    51 }

    53 static cx_allocator_class cx_default_allocator_class = {

    54         cx_malloc_stdlib,

    55         cx_realloc_stdlib,

    56         cx_calloc_stdlib,

    57         cx_free_stdlib

    58 };

    60 struct cx_allocator_s cx_default_allocator = {

    61         &cx_default_allocator_class,

    62         NULL

    63 };

    64 CxAllocator cxDefaultAllocator = &cx_default_allocator;

    66 /* IMPLEMENTATION OF HIGH LEVEL API */

    68 void *cxMalloc(CxAllocator allocator, size_t n) {

    69     return allocator->cl->malloc(allocator->data, n);

    70 }

    72 void *cxRealloc(CxAllocator allocator, void *mem, size_t n) {

    73     return allocator->cl->realloc(allocator->data, mem, n);

    74 }

    76 int cxReallocate(CxAllocator allocator, void **mem, size_t n) {

    77     void *nmem = allocator->cl->realloc(allocator->data, *mem, n);

    78     if (nmem == NULL) {

    79         return 1;

    80     } else {

    81         *mem = nmem;

    82         return 0;

    83     }

    84 }

    86 void *cxCalloc(CxAllocator allocator, size_t nelem, size_t n) {

    87     return allocator->cl->calloc(allocator->data, nelem, n);

    88 }

    90 void cxFree(CxAllocator allocator, void *mem) {

    91     allocator->cl->free(allocator->data, mem);

    92 }

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