ucx: test/util_allocator.cpp@74d0372f5c6f (annotated)

test/util_allocator.cpp@74d0372f5c6f (annotated)

test/util_allocator.cpp

Sat, 16 Apr 2022 20:17:01 +0200

author: Mike Becker <universe@uap-core.de>
date: Sat, 16 Apr 2022 20:17:01 +0200
changeset 518: 74d0372f5c6f
parent 500: test/util_allocator.c@eb9e7bd40a8e
child 571: f83583a0bbac
permissions: -rw-r--r--

improve testing allocator + add tests for it

 /*
  * 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"
 void *cx_malloc_testing(void *d, size_t n) {
     auto data = reinterpret_cast<CxTestingAllocator *>(d);
     void *ptr = malloc(n);
     data->alloc_total++;
     if (ptr == nullptr) {
         data->alloc_failed++;
     } else {
         data->tracked.insert(ptr);
     }
     return ptr;
 }
 void *cx_realloc_testing(void *d, void *mem, size_t n) {
     auto data = reinterpret_cast<CxTestingAllocator *>(d);
     void *ptr = realloc(mem, n);
     if (ptr == mem) {
         return ptr;
     } else {
         data->alloc_total++;
         if (ptr == nullptr) {
             data->alloc_failed++;
         } else {
             data->free_total++;
             if (data->tracked.erase(mem) == 0) {
                 data->free_failed++;
             }
             data->tracked.insert(ptr);
         }
         return ptr;
     }
 }
 void *cx_calloc_testing(void *d, size_t nelem, size_t n) {
     auto data = reinterpret_cast<CxTestingAllocator *>(d);
     void *ptr = calloc(nelem, n);
     data->alloc_total++;
     if (ptr == nullptr) {
         data->alloc_failed++;
     } else {
         data->tracked.insert(ptr);
     }
     return ptr;
 }
 void cx_free_testing(void *d, void *mem) {
     auto data = reinterpret_cast<CxTestingAllocator *>(d);
     data->free_total++;
     if (data->tracked.erase(mem) == 0) {
         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
 };
 CxTestingAllocator::CxTestingAllocator() : CxAllocator() {
     cl = &cx_testing_allocator_class;
     data = this;
 }
 bool CxTestingAllocator::verify() const {
     return tracked.empty() && alloc_failed == 0 && free_failed == 0 && alloc_total == free_total;
 }
 // SELF-TEST
 #include <gtest/gtest.h>
 TEST(TestingAllocator, ExpectFree) {
     CxTestingAllocator allocator;
     ASSERT_TRUE(allocator.verify());
     auto ptr = cxMalloc(&allocator, 16);
     ASSERT_NE(ptr, nullptr);
     EXPECT_FALSE(allocator.verify());
     cxFree(&allocator, ptr);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(TestingAllocator, DetectDoubleFree) {
     CxTestingAllocator allocator;
     ASSERT_TRUE(allocator.verify());
     auto ptr = cxMalloc(&allocator, 16);
     ASSERT_NE(ptr, nullptr);
     cxFree(&allocator, ptr);
     EXPECT_TRUE(allocator.verify());
     ASSERT_NO_FATAL_FAILURE(cxFree(&allocator, ptr));
     EXPECT_FALSE(allocator.verify());
 }
 TEST(TestingAllocator, FreeUntracked) {
     CxTestingAllocator allocator;
     auto ptr = malloc(16);
     ASSERT_TRUE(allocator.verify());
     ASSERT_NO_FATAL_FAILURE(cxFree(&allocator, ptr));
     EXPECT_FALSE(allocator.verify());
     ASSERT_NO_FATAL_FAILURE(free(ptr));
 }
 TEST(TestingAllocator, FullLifecycleWithRealloc) {
     CxTestingAllocator allocator;
     ASSERT_TRUE(allocator.verify());
     auto ptr = cxMalloc(&allocator, 16);
     ASSERT_NE(ptr, nullptr);
     EXPECT_EQ(allocator.tracked.size(), 1);
     ptr = cxRealloc(&allocator, ptr, 256);
     ASSERT_NE(ptr, nullptr);
     EXPECT_EQ(allocator.tracked.size(), 1);
     cxFree(&allocator, ptr);
     EXPECT_TRUE(allocator.verify());
 }
 TEST(TestingAllocator, CallocInitializes) {
     CxTestingAllocator allocator;
     const char* zeros[16] = {0};
     auto ptr = cxCalloc(&allocator, 16, 1);
     EXPECT_EQ(memcmp(ptr, zeros, 16), 0);
     cxFree(&allocator, ptr);
     EXPECT_TRUE(allocator.verify());
 }

Mercurial > hg > ucx / annotate

test/util_allocator.cpp@74d0372f5c6f (annotated)

test/util_allocator.cpp