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// Tencent is pleased to support the open source community by making RapidJSON available.
//
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
//
// Licensed under the MIT License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
//
// http://opensource.org/licenses/MIT
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
#include "unittest.h"
#include "rapidjson/allocators.h"
using namespace rapidjson;
template <typename Allocator>
void TestAllocator(Allocator& a) {
EXPECT_TRUE(a.Malloc(0) == 0);
uint8_t* p = static_cast<uint8_t*>(a.Malloc(100));
EXPECT_TRUE(p != 0);
for (size_t i = 0; i < 100; i++)
p[i] = static_cast<uint8_t>(i);
// Expand
uint8_t* q = static_cast<uint8_t*>(a.Realloc(p, 100, 200));
EXPECT_TRUE(q != 0);
for (size_t i = 0; i < 100; i++)
EXPECT_EQ(i, q[i]);
for (size_t i = 100; i < 200; i++)
q[i] = static_cast<uint8_t>(i);
// Shrink
uint8_t *r = static_cast<uint8_t*>(a.Realloc(q, 200, 150));
EXPECT_TRUE(r != 0);
for (size_t i = 0; i < 150; i++)
EXPECT_EQ(i, r[i]);
Allocator::Free(r);
// Realloc to zero size
EXPECT_TRUE(a.Realloc(a.Malloc(1), 1, 0) == 0);
}
TEST(Allocator, CrtAllocator) {
CrtAllocator a;
TestAllocator(a);
}
TEST(Allocator, MemoryPoolAllocator) {
MemoryPoolAllocator<> a;
TestAllocator(a);
for (size_t i = 1; i < 1000; i++) {
EXPECT_TRUE(a.Malloc(i) != 0);
EXPECT_LE(a.Size(), a.Capacity());
}
}
TEST(Allocator, Alignment) {
#if RAPIDJSON_64BIT == 1
EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000000, 0x00000000), RAPIDJSON_ALIGN(0));
for (uint64_t i = 1; i < 8; i++) {
EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000000, 0x00000008), RAPIDJSON_ALIGN(i));
EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000000, 0x00000010), RAPIDJSON_ALIGN(RAPIDJSON_UINT64_C2(0x00000000, 0x00000008) + i));
EXPECT_EQ(RAPIDJSON_UINT64_C2(0x00000001, 0x00000000), RAPIDJSON_ALIGN(RAPIDJSON_UINT64_C2(0x00000000, 0xFFFFFFF8) + i));
EXPECT_EQ(RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0xFFFFFFF8), RAPIDJSON_ALIGN(RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0xFFFFFFF0) + i));
}
#else
EXPECT_EQ(0u, RAPIDJSON_ALIGN(0u));
for (uint32_t i = 1; i < 4; i++) {
EXPECT_EQ(4u, RAPIDJSON_ALIGN(i));
EXPECT_EQ(8u, RAPIDJSON_ALIGN(4u + i));
EXPECT_EQ(0xFFFFFFF8u, RAPIDJSON_ALIGN(0xFFFFFFF4u + i));
EXPECT_EQ(0xFFFFFFFCu, RAPIDJSON_ALIGN(0xFFFFFFF8u + i));
}
#endif
}
TEST(Allocator, Issue399) {
MemoryPoolAllocator<> a;
void* p = a.Malloc(100);
void* q = a.Realloc(p, 100, 200);
EXPECT_EQ(p, q);
// exhuasive testing
for (size_t j = 1; j < 32; j++) {
a.Clear();
a.Malloc(j); // some unaligned size
p = a.Malloc(1);
for (size_t i = 1; i < 1024; i++) {
q = a.Realloc(p, i, i + 1);
EXPECT_EQ(p, q);
p = q;
}
}
}
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