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…
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&)' { :...
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...
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...
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。
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...
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...