Good day ladies and gentlemen, I have a little question about C++ support for Embedded Studio. I trying use std::mutex, but I'm getting an error: "no type named 'mutex' in namespace 'std'". This is a bit surprising since the header file <mutex> exists.…
#include<iostream>#include<thread>#include<mutex>std::once_flagflag1,flag2;voidsimple_do_once()...
CP.21:使用std::lock()或者std::scoped_lock获取多个mutex Reason(原因) To avoid deadlocks on multiple mutexes. 避免在多个mutex上发生死锁。 Example(实例) This is asking for deadlock: 下面的代码会引发死锁: // thread 1 lock_guard<mutex> lck1(m1); lock_guard<mutex> lck2(m2); // thread 2...
std:call_once是C++11引入的新特性，如需使用，只需要#include <mutex>即可，简单来说std:call_once的...
std::mutex Member functions mutex::mutex mutex::~mutex Locking mutex::lock mutex::try_lock mutex::unlock Native handle mutex::native_handle~mutex(); Destroys the mutex. The behavior is undefined if the mutex is owned by any thread or if any thread terminates while holding any ownership ...
std::mutex::unlock From cppreference.com std::mutex Member functions mutex::mutex mutex::~mutex Locking mutex::lock mutex::try_lock mutex::unlock Native handle mutex::native_handle voidunlock(); (since C++11) Unlocks the mutex. The mutex must be locked by the current thread of execution,...
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When I use the std::thread in my code, there will be an error like this: But I can click "go to the declaration" on it, and jump to file "thread" and see the class definiton of thread: I use cygwin environment on Windows, here is my incl...
https://stackoverflow.com/questions/14191566/c-mutex-in-namespace-std-does-not-name-a-type My understanding is that this error seems to be caused by the C++ compiler that you use on Windows. I'm not sure exactly what might fix your issue, but maybe we can try a few ideas?
这里,thread1和thread2的作者仍然没有在获取mutex的顺序上取得一致,但是顺序已经不再重要。 Note(注意) In real code, mutexes are rarely named to conveniently remind the programmer of an intended relation and intended order of acquisition. In real code, mutexes are not always conveniently acquired on ...