针对你遇到的错误“error: 'recursive_mutex' in namespace 'std' does not name a type”,我可以从以下几个方面进行分析和解答: 确认是否包含了正确的头文件: 确保你的代码中包含了必要的头文件。对于 std::recursive_mutex,你需要在代码中包含 <mutex> 头文件。例如:
C:\MinGW\lib\opencv\build\include/opencv2/core/utility.hpp:697:14:error:'recursive_mutex'innamespace'std'doesnotname a typetypedefstd::recursive_mutex Mutex;^~~~C:\MinGW\lib\opencv\build\include/opencv2/core/utility.hpp:697:9:note:'std::recursive_mutex'is defined in header'<mutex>';did...
System Information OPENCV version 4.7.0-dev Host platform OS: Ubuntu 22.10 Cross Compiler used for compilation - arm-none-eabi-gcc (version gcc-arm-none-eabi-10.3-2021.10) Used Cmake-GUI for configuring and generation - Not able to get t...
timed_mutex class try_to_lock_t struct unique_lock class <new> <numeric> <optional> <ostream> <queue> <random> <ranges> <ratio> <regex> <scoped_allocator> <set> <shared_mutex> <sstream> <stack> <stdexcept> <streambuf> <string...
Remarks If the calling thread already owns themutex, the function immediately returns true, and the previous lock remains in effect. Requirements Header:mutex Namespace:std See Also Reference recursive_mutex Class <mutex>
:mutex 不同的是,std::recursive_mutex 允许同一个线程对互斥量多次上锁(即递归上锁),来获得对互斥量对象的多层所有权,std::recursive_mutex 释放互斥量时需要调用与该锁层次深度相同次数的 unlock(),可理解为 lock() 次数和 unlock() 次数相同,除此之外,std::recursive_mutex 的特性和 std::mutex 大致相同...
Remarks If the calling thread already owns themutex, the function immediately returns true, and the previous lock remains in effect. Requirements Header:mutex Namespace:std See Also Reference recursive_timed_mutex Class <mutex>
Remarks If the calling thread already owns themutex, the function immediately returns true, and the previous lock remains in effect. Requirements Header:mutex Namespace:std See Also Reference recursive_mutex Class <mutex>
recursive_mutex::try_lock-Methode Versuche, Typ- Besitz der Mutex, ohne Blockierung. recursive_mutex::unlock-Methode Gibt den Besitz der Mutex frei. Anforderungen Header: Mutex Namespace: std Siehe auch Referenz <mutex> Weitere Ressourcen HeaderdateienDeutsch...
Header: <mutex>Namespace: stdlockBlocks the calling thread until the thread obtains ownership of the mutex.C++ Copy void lock(); RemarksIf the calling thread already owns the mutex, the method returns immediately, and the previous lock remains in effect....