Fri, 08 Oct 2021 18:58:49 +0200
move dereference operation into macro
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2021 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 "util_allocator.h" #include <string.h> void cx_testing_allocator_add(cx_testing_allocator_s *data, void *ptr) { data->tracked[data->live] = ptr; data->live++; } int cx_testing_allocator_remove(cx_testing_allocator_s *data, void *ptr) { for (int i = 0; i < data->live; i++) { if (data->tracked[i] == ptr) { data->tracked[i] = data->tracked[data->live - 1]; data->live--; return 0; } } return 1; } void *cx_malloc_testing(void *d, size_t n) { cx_testing_allocator_s *data = d; void *ptr = malloc(n); data->alloc_total++; if (ptr == NULL) { data->alloc_failed++; } else { cx_testing_allocator_add(data, ptr); } return ptr; } void *cx_realloc_testing(void *d, void *mem, size_t n) { cx_testing_allocator_s *data = d; void *ptr = realloc(mem, n); if (ptr == mem) { return ptr; } else { data->alloc_total++; if (ptr == NULL) { data->alloc_failed++; } else { data->free_total++; if (cx_testing_allocator_remove(data, mem)) { data->free_failed++; } cx_testing_allocator_add(data, ptr); } return ptr; } } void *cx_calloc_testing(void *d, size_t nelem, size_t n) { cx_testing_allocator_s *data = d; void *ptr = calloc(nelem, n); data->alloc_total++; if (ptr == NULL) { data->alloc_failed++; } else { cx_testing_allocator_add(data, ptr); } return ptr; } void cx_free_testing(void *d, void *mem) { cx_testing_allocator_s *data = d; data->free_total++; if (cx_testing_allocator_remove(data, mem)) { data->free_failed++; // do not even attempt to free mem, because it is likely to segfault } else { free(mem); } } cx_allocator_class cx_testing_allocator_class = { cx_malloc_testing, cx_realloc_testing, cx_calloc_testing, cx_free_testing }; cx_testing_allocator_s cx_testing_allocator_data; struct cx_allocator_s cx_testing_allocator = { &cx_testing_allocator_class, &cx_testing_allocator_data }; CxAllocator cxTestingAllocator = &cx_testing_allocator; void cxTestingAllocatorReset(void) { memset(&cx_testing_allocator_data, 0, sizeof(cx_testing_allocator_s)); } int cxTestingAllocatorVerify(void) { return cx_testing_allocator_data.live == 0 && cx_testing_allocator_data.alloc_failed == 0 && cx_testing_allocator_data.free_failed == 0 && cx_testing_allocator_data.alloc_total == cx_testing_allocator_data.free_total; }