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每个线程都有自己的堆栈吗？

[英]Does each thread have its own stack?

原文 2013-08-21 06:24:27 6 1 c++/ c/ multithreading/ pthreads/ stack

When I create multiple threads from a process, then does each thread have its own stack, or is it that they share the stack of their parent process. 当我从进程创建多个线程时，每个线程是否都有自己的堆栈，或者它们是否共享其父进程的堆栈。 What happens when a thread makes a system call? 线程进行系统调用时会发生什么？ Do threads also maintain their own kernel stack like processes? 线程是否也像进程一样维护自己的内核堆栈？

1 个解决方案

Yes threads have their own stacks and their own kernel stacks (eg linux). 是的线程有自己的堆栈和自己的内核堆栈（例如linux）。

When a thread makes a system call, you trap into kernel mode (from user mode), you pass the arguments to the kernel, the arguments are checked, the kernel does w/e it needs to do (in the kernel stack), returns the final value back to the thread and you go back to user mode. 当一个线程进行系统调用时，你陷入内核模式（从用户模式），你将参数传递给内核，检查参数，内核做它需要做的事情（在内核堆栈中），返回返回到线程的最终值，然后返回用户模式。

是否为每个函数和ISR分配了自己的堆栈大小 - Does each function and ISR get allocated its own stack size

如何链接非线程安全库，以便每个线程都有自己的全局变量？ - How to link non thread-safe library so each thread will have its own global variables from it?

C++ 标准是否指定每个线程都有自己的堆栈？ - Does the C++ Standard specify that every thread has its own stack?

c ++中的每个线程都有自己的内存分配限制 - Does Each thread in c++ has its own memory allocation limits

为什么chrono有自己的名称空间？ - Why does chrono have its own namespace?

hiredis Redis 库是否为异步回调创建了自己的线程 - Does the hiredis Redis library create its own thread for async callbacks

产生一个线程本身是否提供内存顺序保证？ - Does spawning a thread provide memory order guarantees on its own?

每个文件都有自己的静态变量副本吗？ - Does each file get its own copy of the static variable?

Qt 有自己的 boost::optional 替代方案吗？ - Does Qt have its own boost::optional alternative?

Poco是否有自己的其他异常类或模式？ - Does Poco have its own additional exception class or patterns?

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相关问题 是否为每个函数和ISR分配了自己的堆栈大小 - Does each function and ISR get allocated its own stack size 如何链接非线程安全库，以便每个线程都有自己的全局变量？ - How to link non thread-safe library so each thread will have its own global variables from it? C++ 标准是否指定每个线程都有自己的堆栈？ - Does the C++ Standard specify that every thread has its own stack? c ++中的每个线程都有自己的内存分配限制 - Does Each thread in c++ has its own memory allocation limits 为什么chrono有自己的名称空间？ - Why does chrono have its own namespace? hiredis Redis 库是否为异步回调创建了自己的线程 - Does the hiredis Redis library create its own thread for async callbacks 产生一个线程本身是否提供内存顺序保证？ - Does spawning a thread provide memory order guarantees on its own? 每个文件都有自己的静态变量副本吗？ - Does each file get its own copy of the static variable? Qt 有自己的 boost::optional 替代方案吗？ - Does Qt have its own boost::optional alternative? Poco是否有自己的其他异常类或模式？ - Does Poco have its own additional exception class or patterns?

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