ucx: test/util_allocator.cpp@f0f99dd06d9f (annotated)

test/util_allocator.cpp@f0f99dd06d9f (annotated)

test/util_allocator.cpp

Mon, 08 Aug 2022 17:12:00 +0200

author: Mike Becker <universe@uap-core.de>
date: Mon, 08 Aug 2022 17:12:00 +0200
changeset 572: f0f99dd06d9f
parent 571: f83583a0bbac
child 642: 98c90759f69e
permissions: -rw-r--r--

#201 - remove dangerous allocator config

There is no plausible use case, except using the testing
allocator in the test case, and having the possibility to
specify any allocator (including another mempool) causes
more harm than good.

 /*
  * 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::used() const {
     return alloc_total > 0;
 }
 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@f0f99dd06d9f (annotated)

test/util_allocator.cpp