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在C中对函数指针进行原子读/写？

[英]Atomic read/write for function pointer in C?

原文 2019-06-21 07:15:54 8 1 c/ multithreading/ thread-safety/ function-pointers/ atomic

I am working on some code in C that is run on Windows as well as other platforms. 我正在研究Windows和其他平台上运行的C语言代码。 I know of functions such as InterlockedExchangePointer to atomically read/write a data pointer, and I'm sure there's something similar for other platforms, but how can I do that with a function pointer in a portable way? 我知道诸如InterlockedExchangePointer之类的函数可以原子地读取/写入数据指针，而且我敢肯定其他平台也有类似的东西，但是我该如何使用可移植的方法使用函数指针呢？ Is it possible or do I need a lock or a memory barrier or something? 是否可以，或者我需要锁或内存挡板之类的东西？

1 个解决方案

C11 atomics is the standard-based thing, but not all compilers support it. C11 原子是基于标准的事物，但并非所有编译器都支持它。

GCC 4.1+, as well as compilers like clang and ICC which strive for compatibility with it support __sync builtins . GCC 4.1+以及像clang和ICC这样的努力争取与之兼容的编译器都支持__sync 。

I have some code which provides a common API that you might be interested in. 我有一些代码提供了您可能感兴趣的通用API。

C原子读取修改写入 - C atomic read modify write

C语言中的指针算术和读/写 - Pointer Arithmetic and Read/Write in C

双指针C内部写入/读取 - Write/read inside double pointer C

如何在C的只读存储器中写入指针 - How to write to a pointer in read only memory in C

C文件指针读写问题 - C file pointer read write issues

如何在 C 中为文件指针正确编写 function？ - How to write a properly function in C for file pointer?

将指针传递给C中的只读函数 - Pass a pointer to a function as read-only in C

在Linux内核中读写原子操作实现 - Read and Write atomic operation implementation in the Linux Kernel

是否将指针视为C中的原子动作？ - Is changing a pointer considered an atomic action in C?

如何在可以在C中读取和解除引用的文本文件中写入地址（指针） - how to write an address (pointer) in a text file that can be read and dereferenced in C

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相关问题 C原子读取修改写入 - C atomic read modify write C语言中的指针算术和读/写 - Pointer Arithmetic and Read/Write in C 双指针C内部写入/读取 - Write/read inside double pointer C 如何在C的只读存储器中写入指针 - How to write to a pointer in read only memory in C C文件指针读写问题 - C file pointer read write issues 如何在 C 中为文件指针正确编写 function？ - How to write a properly function in C for file pointer? 将指针传递给C中的只读函数 - Pass a pointer to a function as read-only in C 在Linux内核中读写原子操作实现 - Read and Write atomic operation implementation in the Linux Kernel 是否将指针视为C中的原子动作？ - Is changing a pointer considered an atomic action in C? 如何在可以在C中读取和解除引用的文本文件中写入地址（指针） - how to write an address (pointer) in a text file that can be read and dereferenced in C

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