std::thread*, std::vector<std::thread> >; _ForwardIterator = std::thread*]’: /usr/include/c++/11/bits/stl_uninitialized.h:333:37: required from‘_ForwardIterator std::__uninitialized_copy_a(_InputIterator, _In
在前面的基础上,参考 【公开课】C++11开始的多线程编程(#5)_哔哩哔哩_bilibili这里继续重构: 加入全局变量:std::vector<std::thread> th_pool; main.cpp: #include <iostream> #include <thre…
可见现成 thread_get在读取vec[0].id值的时候,获取到了三种状态下的值,说明std::vector的操作不是线程安全的: 拷贝构造函数的值:101 //2 拷贝构造函数,用于说明深拷贝的必要性 MyClass(const MyClass& var) : id(var.id + 1), name(var.name), p(var.p) { ... }; 析构后的值: -1 ~MyCl...
std::thread; _Alloc = std::allocator<std::thread>; std::vector<_Tp, _Alloc>::value_type = std::thread]' main.cpp:37:30: required from here /usr/local/include/c++/5.1.0/ext/new_allocator.h:120:4: error: use of deleted function 'std::thread::thread(const std::thread&)' { :...
求助,std::ve..如题,编译器为mingw,未使用cmake,其他都好好的,补充:vs2022中可运行,如果gcc实在不行,如何在vscode中设置与vs2022一样的环境(编译选项)呢
thread t2 = thread(add_vector, 1000, 1); t1.join(); t2.join(); } 两个线程都在向vec中添加元素,如果没有任何处理,很容易崩溃,就是因为第二个原因。而这种并发写的情况,在很多业务场景中都是很可能出现的,例如:在推荐系统中,为了提高运算效率每个线程都按照不同的策略生产推荐召回,这些线程产生召回后...
Writes Need Synchronization: If at least one thread modifies a std::vector, and any other thread accesses it simultaneously (even if it’s just reading), you must synchronize access to the vector. This is because modifying operations (like push_back(), emplace_back(), resize(), etc.) mi...
C++11 did go to some effort to specify the thread-safety (or lack thereof) for containers. If you look at the C++11 standard (or a fairly close draft such as the later N3337, you'll find a section titled "Container data races" that describes which container operations are "const" (do...
为此我们常封装实现了线程安全的priority_queue，姑且叫做 thread_safe::priority_queue。
This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.Tuesday, May 16, 2017 9:58 AMHey Sera Yu,thanks for the reply, but this still doesn't explain why this points to...