Home Backend Development C++ Implement memory pools using C++ functions for memory allocation and destruction

Implement memory pools using C++ functions for memory allocation and destruction

Apr 22, 2024 pm 06:54 PM
c++ memory pool

C functions for memory allocation and destruction can be used to implement memory pools, thereby improving performance. The memory pool pre-allocates memory blocks and reuses them, avoiding frequent system allocation and release operations. The memory allocation function PoolAllocate and the memory destruction function PoolDeallocate can be defined to manage the memory pool and create a pool of objects of a specific size. Through these functions, objects are allocated and destroyed, which can significantly reduce memory operation overhead and improve application performance in actual combat.

使用 C++ 函数的内存分配和销毁来实现内存池

Use C functions to allocate and destroy memory to implement memory pool

The memory pool is a method that is pre-allocated and reused Memory block technology to improve performance. Unlike traditional memory allocation, memory pools allow objects of specific sizes to be allocated and destroyed from the pool, thus avoiding frequent system memory allocation and release operations.

In order to implement memory pools using C functions for memory allocation and destruction, we can define the following functions:

// 内存分配函数
void *PoolAllocate(size_t size) {
  return malloc(size);
}

// 内存销毁函数
void PoolDeallocate(void *ptr) {
  free(ptr);
}
Copy after login

Now, we can use these functions to create and manage memory pools.

Practical case:

Let us create a memory pool for allocating and destroying 128-byte objects:

// 创建和初始化内存池
size_t poolSize = 1024 * 1024;  // 1MB 内存池
void *poolStart = PoolAllocate(poolSize);  // 分配池内存

// 分配和释放内存池中的对象
for (int i = 0; i < 100000; i++) {
  void *ptr = PoolAllocate(128);

  // 使用对象

  PoolDeallocate(ptr);
}

// 销毁内存池
PoolDeallocate(poolStart);
Copy after login

By using the memory pool, We can reduce the overhead of memory allocation and deallocation, thus improving the overall performance of the application.

The above is the detailed content of Implement memory pools using C++ functions for memory allocation and destruction. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1266
29
C# Tutorial
1239
24
C# vs. C  : History, Evolution, and Future Prospects C# vs. C : History, Evolution, and Future Prospects Apr 19, 2025 am 12:07 AM

The history and evolution of C# and C are unique, and the future prospects are also different. 1.C was invented by BjarneStroustrup in 1983 to introduce object-oriented programming into the C language. Its evolution process includes multiple standardizations, such as C 11 introducing auto keywords and lambda expressions, C 20 introducing concepts and coroutines, and will focus on performance and system-level programming in the future. 2.C# was released by Microsoft in 2000. Combining the advantages of C and Java, its evolution focuses on simplicity and productivity. For example, C#2.0 introduced generics and C#5.0 introduced asynchronous programming, which will focus on developers' productivity and cloud computing in the future.

Where to write code in vscode Where to write code in vscode Apr 15, 2025 pm 09:54 PM

Writing code in Visual Studio Code (VSCode) is simple and easy to use. Just install VSCode, create a project, select a language, create a file, write code, save and run it. The advantages of VSCode include cross-platform, free and open source, powerful features, rich extensions, and lightweight and fast.

Golang and C  : Concurrency vs. Raw Speed Golang and C : Concurrency vs. Raw Speed Apr 21, 2025 am 12:16 AM

Golang is better than C in concurrency, while C is better than Golang in raw speed. 1) Golang achieves efficient concurrency through goroutine and channel, which is suitable for handling a large number of concurrent tasks. 2)C Through compiler optimization and standard library, it provides high performance close to hardware, suitable for applications that require extreme optimization.

Python vs. C  : Learning Curves and Ease of Use Python vs. C : Learning Curves and Ease of Use Apr 19, 2025 am 12:20 AM

Python is easier to learn and use, while C is more powerful but complex. 1. Python syntax is concise and suitable for beginners. Dynamic typing and automatic memory management make it easy to use, but may cause runtime errors. 2.C provides low-level control and advanced features, suitable for high-performance applications, but has a high learning threshold and requires manual memory and type safety management.

Golang and C  : The Trade-offs in Performance Golang and C : The Trade-offs in Performance Apr 17, 2025 am 12:18 AM

The performance differences between Golang and C are mainly reflected in memory management, compilation optimization and runtime efficiency. 1) Golang's garbage collection mechanism is convenient but may affect performance, 2) C's manual memory management and compiler optimization are more efficient in recursive computing.

The Performance Race: Golang vs. C The Performance Race: Golang vs. C Apr 16, 2025 am 12:07 AM

Golang and C each have their own advantages in performance competitions: 1) Golang is suitable for high concurrency and rapid development, and 2) C provides higher performance and fine-grained control. The selection should be based on project requirements and team technology stack.

Golang vs. C  : Performance and Speed Comparison Golang vs. C : Performance and Speed Comparison Apr 21, 2025 am 12:13 AM

Golang is suitable for rapid development and concurrent scenarios, and C is suitable for scenarios where extreme performance and low-level control are required. 1) Golang improves performance through garbage collection and concurrency mechanisms, and is suitable for high-concurrency Web service development. 2) C achieves the ultimate performance through manual memory management and compiler optimization, and is suitable for embedded system development.

How to execute code with vscode How to execute code with vscode Apr 15, 2025 pm 09:51 PM

Executing code in VS Code only takes six steps: 1. Open the project; 2. Create and write the code file; 3. Open the terminal; 4. Navigate to the project directory; 5. Execute the code with the appropriate commands; 6. View the output.

See all articles