293 lines
8.9 KiB
C++
293 lines
8.9 KiB
C++
// Tencent is pleased to support the open source community by making RapidJSON available.
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//
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// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip.
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//
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// Licensed under the MIT License (the "License"); you may not use this file except
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// in compliance with the License. You may obtain a copy of the License at
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//
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// http://opensource.org/licenses/MIT
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//
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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#include "unittest.h"
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#include "rapidjson/allocators.h"
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#include <map>
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#include <string>
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#include <utility>
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#include <functional>
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using namespace rapidjson;
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template <typename Allocator>
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void TestAllocator(Allocator& a) {
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EXPECT_TRUE(a.Malloc(0) == 0);
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uint8_t* p = static_cast<uint8_t*>(a.Malloc(100));
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EXPECT_TRUE(p != 0);
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for (size_t i = 0; i < 100; i++)
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p[i] = static_cast<uint8_t>(i);
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// Expand
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uint8_t* q = static_cast<uint8_t*>(a.Realloc(p, 100, 200));
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EXPECT_TRUE(q != 0);
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for (size_t i = 0; i < 100; i++)
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EXPECT_EQ(i, q[i]);
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for (size_t i = 100; i < 200; i++)
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q[i] = static_cast<uint8_t>(i);
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// Shrink
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uint8_t *r = static_cast<uint8_t*>(a.Realloc(q, 200, 150));
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EXPECT_TRUE(r != 0);
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for (size_t i = 0; i < 150; i++)
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EXPECT_EQ(i, r[i]);
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Allocator::Free(r);
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// Realloc to zero size
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EXPECT_TRUE(a.Realloc(a.Malloc(1), 1, 0) == 0);
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}
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struct TestStdAllocatorData {
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TestStdAllocatorData(int &constructions, int &destructions) :
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constructions_(&constructions),
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destructions_(&destructions)
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{
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++*constructions_;
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}
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TestStdAllocatorData(const TestStdAllocatorData& rhs) :
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constructions_(rhs.constructions_),
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destructions_(rhs.destructions_)
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{
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++*constructions_;
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}
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TestStdAllocatorData& operator=(const TestStdAllocatorData& rhs)
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{
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this->~TestStdAllocatorData();
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constructions_ = rhs.constructions_;
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destructions_ = rhs.destructions_;
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++*constructions_;
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return *this;
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}
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~TestStdAllocatorData()
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{
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++*destructions_;
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}
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private:
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TestStdAllocatorData();
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int *constructions_,
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*destructions_;
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};
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template <typename Allocator>
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void TestStdAllocator(const Allocator& a) {
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#if RAPIDJSON_HAS_CXX17
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typedef StdAllocator<bool, Allocator> BoolAllocator;
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#else
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typedef StdAllocator<void, Allocator> VoidAllocator;
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typedef typename VoidAllocator::template rebind<bool>::other BoolAllocator;
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#endif
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BoolAllocator ba(a), ba2(a);
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EXPECT_TRUE(ba == ba2);
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EXPECT_FALSE(ba!= ba2);
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ba.deallocate(ba.allocate());
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EXPECT_TRUE(ba == ba2);
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EXPECT_FALSE(ba != ba2);
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unsigned long long ll = 0, *llp = ≪
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const unsigned long long cll = 0, *cllp = &cll;
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StdAllocator<unsigned long long, Allocator> lla(a);
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EXPECT_EQ(lla.address(ll), llp);
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EXPECT_EQ(lla.address(cll), cllp);
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EXPECT_TRUE(lla.max_size() > 0 && lla.max_size() <= SIZE_MAX / sizeof(unsigned long long));
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int *arr;
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StdAllocator<int, Allocator> ia(a);
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arr = ia.allocate(10 * sizeof(int));
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EXPECT_TRUE(arr != 0);
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for (int i = 0; i < 10; ++i) {
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arr[i] = 0x0f0f0f0f;
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}
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ia.deallocate(arr, 10);
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arr = Malloc<int>(ia, 10);
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EXPECT_TRUE(arr != 0);
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for (int i = 0; i < 10; ++i) {
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arr[i] = 0x0f0f0f0f;
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}
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arr = Realloc<int>(ia, arr, 10, 20);
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EXPECT_TRUE(arr != 0);
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for (int i = 0; i < 10; ++i) {
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EXPECT_EQ(arr[i], 0x0f0f0f0f);
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}
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for (int i = 10; i < 20; i++) {
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arr[i] = 0x0f0f0f0f;
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}
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Free<int>(ia, arr, 20);
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int cons = 0, dest = 0;
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StdAllocator<TestStdAllocatorData, Allocator> da(a);
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for (int i = 1; i < 10; i++) {
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TestStdAllocatorData *d = da.allocate();
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EXPECT_TRUE(d != 0);
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da.destroy(new(d) TestStdAllocatorData(cons, dest));
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EXPECT_EQ(cons, i);
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EXPECT_EQ(dest, i);
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da.deallocate(d);
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}
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typedef StdAllocator<char, Allocator> CharAllocator;
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typedef std::basic_string<char, std::char_traits<char>, CharAllocator> String;
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#if RAPIDJSON_HAS_CXX11
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String s(CharAllocator{a});
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#else
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CharAllocator ca(a);
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String s(ca);
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#endif
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for (int i = 0; i < 26; i++) {
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s.push_back(static_cast<char>('A' + i));
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}
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EXPECT_TRUE(s == "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
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typedef StdAllocator<std::pair<const int, bool>, Allocator> MapAllocator;
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typedef std::map<int, bool, std::less<int>, MapAllocator> Map;
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#if RAPIDJSON_HAS_CXX11
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Map map(std::less<int>(), MapAllocator{a});
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#else
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MapAllocator ma(a);
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Map map(std::less<int>(), ma);
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#endif
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for (int i = 0; i < 10; i++) {
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map.insert(std::make_pair(i, (i % 2) == 0));
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}
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EXPECT_TRUE(map.size() == 10);
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for (int i = 0; i < 10; i++) {
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typename Map::iterator it = map.find(i);
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EXPECT_TRUE(it != map.end());
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EXPECT_TRUE(it->second == ((i % 2) == 0));
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}
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}
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TEST(Allocator, CrtAllocator) {
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CrtAllocator a;
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TestAllocator(a);
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TestStdAllocator(a);
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CrtAllocator a2;
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EXPECT_TRUE(a == a2);
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EXPECT_FALSE(a != a2);
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a2.Free(a2.Malloc(1));
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EXPECT_TRUE(a == a2);
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EXPECT_FALSE(a != a2);
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}
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TEST(Allocator, MemoryPoolAllocator) {
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const size_t capacity = RAPIDJSON_ALLOCATOR_DEFAULT_CHUNK_CAPACITY;
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MemoryPoolAllocator<> a(capacity);
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a.Clear(); // noop
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EXPECT_EQ(a.Size(), 0u);
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EXPECT_EQ(a.Capacity(), 0u);
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EXPECT_EQ(a.Shared(), false);
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{
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MemoryPoolAllocator<> a2(a);
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EXPECT_EQ(a2.Shared(), true);
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EXPECT_EQ(a.Shared(), true);
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EXPECT_TRUE(a == a2);
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EXPECT_FALSE(a != a2);
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a2.Free(a2.Malloc(1));
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EXPECT_TRUE(a == a2);
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EXPECT_FALSE(a != a2);
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}
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EXPECT_EQ(a.Shared(), false);
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EXPECT_EQ(a.Capacity(), capacity);
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EXPECT_EQ(a.Size(), 8u); // aligned
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a.Clear();
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EXPECT_EQ(a.Capacity(), 0u);
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EXPECT_EQ(a.Size(), 0u);
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TestAllocator(a);
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TestStdAllocator(a);
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for (size_t i = 1; i < 1000; i++) {
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EXPECT_TRUE(a.Malloc(i) != 0);
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EXPECT_LE(a.Size(), a.Capacity());
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}
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CrtAllocator baseAllocator;
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a = MemoryPoolAllocator<>(capacity, &baseAllocator);
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EXPECT_EQ(a.Capacity(), 0u);
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EXPECT_EQ(a.Size(), 0u);
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a.Free(a.Malloc(1));
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EXPECT_EQ(a.Capacity(), capacity);
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EXPECT_EQ(a.Size(), 8u); // aligned
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{
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a.Clear();
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const size_t bufSize = 1024;
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char *buffer = static_cast<char *>(a.Malloc(bufSize));
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MemoryPoolAllocator<> aligned_a(buffer, bufSize);
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EXPECT_TRUE(aligned_a.Capacity() > 0 && aligned_a.Capacity() <= bufSize);
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EXPECT_EQ(aligned_a.Size(), 0u);
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aligned_a.Free(aligned_a.Malloc(1));
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EXPECT_TRUE(aligned_a.Capacity() > 0 && aligned_a.Capacity() <= bufSize);
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EXPECT_EQ(aligned_a.Size(), 8u); // aligned
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}
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{
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a.Clear();
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const size_t bufSize = 1024;
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char *buffer = static_cast<char *>(a.Malloc(bufSize));
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RAPIDJSON_ASSERT(bufSize % sizeof(void*) == 0);
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MemoryPoolAllocator<> unaligned_a(buffer + 1, bufSize - 1);
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EXPECT_TRUE(unaligned_a.Capacity() > 0 && unaligned_a.Capacity() <= bufSize - sizeof(void*));
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EXPECT_EQ(unaligned_a.Size(), 0u);
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unaligned_a.Free(unaligned_a.Malloc(1));
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EXPECT_TRUE(unaligned_a.Capacity() > 0 && unaligned_a.Capacity() <= bufSize - sizeof(void*));
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EXPECT_EQ(unaligned_a.Size(), 8u); // aligned
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}
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}
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TEST(Allocator, Alignment) {
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if (sizeof(size_t) >= 8) {
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EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000000, 0x00000000), RAPIDJSON_ALIGN(0));
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for (uint64_t i = 1; i < 8; i++) {
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EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000000, 0x00000008), RAPIDJSON_ALIGN(i));
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EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000000, 0x00000010), RAPIDJSON_ALIGN(RAPIDJSON_UINT64_C2(0x00000000, 0x00000008) + i));
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EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000001, 0x00000000), RAPIDJSON_ALIGN(RAPIDJSON_UINT64_C2(0x00000000, 0xFFFFFFF8) + i));
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EXPECT_EQ(RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0xFFFFFFF8), RAPIDJSON_ALIGN(RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0xFFFFFFF0) + i));
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}
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}
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EXPECT_EQ(0u, RAPIDJSON_ALIGN(0u));
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for (uint32_t i = 1; i < 8; i++) {
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EXPECT_EQ(8u, RAPIDJSON_ALIGN(i));
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EXPECT_EQ(0xFFFFFFF8u, RAPIDJSON_ALIGN(0xFFFFFFF0u + i));
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}
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}
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TEST(Allocator, Issue399) {
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MemoryPoolAllocator<> a;
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void* p = a.Malloc(100);
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void* q = a.Realloc(p, 100, 200);
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EXPECT_EQ(p, q);
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// exhuasive testing
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for (size_t j = 1; j < 32; j++) {
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a.Clear();
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a.Malloc(j); // some unaligned size
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p = a.Malloc(1);
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for (size_t i = 1; i < 1024; i++) {
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q = a.Realloc(p, i, i + 1);
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EXPECT_EQ(p, q);
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p = q;
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}
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}
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}
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