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1dd0e3b aa33e74 1dd0e3b 8ad3629 1dd0e3b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | #include <benchmark/benchmark.h>
#include <vector>
#include "object_pool.h"
#include <cstring>
// 测试结构体
struct TestStruct {
int id;
double value;
char name[32];
TestStruct(int id = 0, double value = 0.0, const char* name = "")
: id(id), value(value) {
strcpy(this->name, name);
}
};
// 测试 ObjectPool 分配
static void BM_ObjectPool_Allocate(benchmark::State& state) {
hhb::core::ObjectPool<TestStruct> pool;
std::vector<TestStruct*> objects;
objects.reserve(state.range(0));
for (auto _ : state) {
for (int i = 0; i < state.range(0); ++i) {
TestStruct* obj = pool.allocate();
new (obj) TestStruct(i, i * 1.0, "test");
objects.push_back(obj);
}
// 释放所有对象
for (TestStruct* obj : objects) {
obj->~TestStruct();
pool.deallocate(obj);
}
objects.clear();
}
}
// 测试 std::vector 分配
static void BM_Vector_Allocate(benchmark::State& state) {
std::vector<TestStruct> objects;
for (auto _ : state) {
objects.reserve(state.range(0));
for (int i = 0; i < state.range(0); ++i) {
objects.emplace_back(i, i * 1.0, "test");
}
objects.clear();
}
}
// 测试内存碎片率（通过分配和释放模式）
static void BM_ObjectPool_Fragmentation(benchmark::State& state) {
hhb::core::ObjectPool<TestStruct> pool;
std::vector<TestStruct*> objects;
objects.reserve(state.range(0));
for (auto _ : state) {
// 分配一半对象
for (int i = 0; i < state.range(0) / 2; ++i) {
TestStruct* obj = pool.allocate();
new (obj) TestStruct(i, i * 1.0, "test");
objects.push_back(obj);
}
// 释放一半对象
for (int i = 0; i < objects.size() / 2; ++i) {
objects[i]->~TestStruct();
pool.deallocate(objects[i]);
}
// 重新分配对象
for (int i = 0; i < state.range(0) / 2; ++i) {
TestStruct* obj = pool.allocate();
new (obj) TestStruct(i + state.range(0) / 2, (i + state.range(0) / 2) * 1.0, "test");
objects.push_back(obj);
}
// 释放所有对象
for (TestStruct* obj : objects) {
obj->~TestStruct();
pool.deallocate(obj);
}
objects.clear();
}
}
static void BM_Vector_Fragmentation(benchmark::State& state) {
std::vector<TestStruct> objects;
for (auto _ : state) {
// 分配一半对象
objects.reserve(state.range(0));
for (int i = 0; i < state.range(0) / 2; ++i) {
objects.emplace_back(i, i * 1.0, "test");
}
// 释放一半对象
objects.erase(objects.begin(), objects.begin() + objects.size() / 2);
// 重新分配对象
for (int i = 0; i < state.range(0) / 2; ++i) {
objects.emplace_back(i + state.range(0) / 2, (i + state.range(0) / 2) * 1.0, "test");
}
objects.clear();
}
}
// 注册测试
BENCHMARK(BM_ObjectPool_Allocate)->RangeMultiplier(10)->Range(1000, 10000000);
BENCHMARK(BM_Vector_Allocate)->RangeMultiplier(10)->Range(1000, 10000000);
BENCHMARK(BM_ObjectPool_Fragmentation)->RangeMultiplier(10)->Range(1000, 10000000);
BENCHMARK(BM_Vector_Fragmentation)->RangeMultiplier(10)->Range(1000, 10000000);
BENCHMARK_MAIN();
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