issue/513: 内存使用情况统计&&内存引用计数和内存池实现（WIP）

[Ceng23333]

add memory usage stats from allocator && mem ref count, mem pool implementation

#513

[PanZezhong1725]

这个函数和matmul有关吗，为什么会在matmul的测试脚本里

[PanZezhong1725]

context的构造器应该已经保证了一定有建好的runtime，什么时候get current runtime会是nullptr？

[Ceng23333]

这种闭包用法会出现current runtime未初始化
`

    const int allocations_per_thread = 100;
    std::vector<std::thread> threads;
    std::atomic<int> success_count{0};
    std::atomic<int> failure_count{0};
    for (int i = 0; i < num_threads_; ++i) {
        threads.emplace_back([&, i]() {
            try {
                for (int j = 0; j < allocations_per_thread; ++j) {
                    // Allocate memory of random size
                    size_t size = 64 + (j % 1024);
                    spdlog::debug("Thread {}: ConcurrentAllocations: Allocating memory of size {}", i, size);
                    auto memory = context::allocateMemory(size);
                    spdlog::debug("Thread {}: ConcurrentAllocations: Memory allocated successfully", i);
                    if (memory && memory->size() == size) {
                        success_count++;
                    } else {
                        failure_count++;
                    }

                    // Small delay to increase chance of race conditions
                    std::this_thread::sleep_for(std::chrono::microseconds(1));
                }
            } catch (const std::exception &e) {
                failure_count++;
                std::cerr << "Thread " << i << " failed: " << e.what() << std::endl;
            }
        });
    }

`

[PanZezhong1725]

明白了，创建新的线程的时候会是nullptr。这是个bug，要不单独提pr修复一下吧

[Ceng23333]

OK，这部分我先单独提pr

[PanZezhong1725]

include目录下都是会暴露给外部的接口，这个设计是要把memory pool的接口暴露给外部吗？什么情况下用户或者上层框架需要直接和memory pool交互？

[PanZezhong1725]

你这不还是用的原生的mallocAsync接口，那你的内存池用哪了？

[PanZezhong1725]

为什么memory pool是 singleton的设计