函数 std::thread::hardware_concurrency() 头文件 #include <thread> 用例 unsignedlongconsthardware_threads = std::thread::hardware_concurrency(); 说明 在新版C++标准库中是一个很有用的函数。这个函数会返回能并发在一个程序中的线程数量。例如,多核系统中,返回值可以是CPU核芯的数量。返回值也仅仅是一个提示,当系统信息无法获取时,函数也会...
static unsigned int hardware_concurrency() noexcept; (C++11 起) 返回实现支持的并发线程数。应该只把该值当做一项提示。 参数(无) 返回值受支持的并发线程数。若该值非良定义或不可计算,则返回 0。 示例运行此代码 #include <iostream> #include <thread> int main() { unsigned int n = std::...
) { unsigned int n = std::thread::hardware_concurrency(); std::cout << n << std::...
std::thread::hardware_concurrency()这个函数将返回同时并发在一个程序中的数量。 在多核系统中,返回值可以是CPU核心的数量,返回值也仅仅是一个提示,当系统无法获取时,函数返回0。
问std::thread::hardware_concurrency与静态初始化EN这个全局函数会遭受静态初始化失败吗？版权声明：本文...
std::thread:: cppreference.com Create account std::thread::hardware_concurrency staticunsignedinthardware_concurrency()noexcept; (since C++11) Returns the number of concurrent threads supported by the implementation. The value should be considered only a hint....
g++ --- main.cpp: In function 'int main()': main.cpp:6:31: warning: the address of 'static unsigned int std::thread::hardware_concurrency()' will always evaluate as 'true' [-Waddress] std::cout << std::thread::hardware_concurrency << '\n' ; ^~~~ http://coliru.stacked-crooke...
m.可能是一个AI，并且提到了Jérôme Richard，因此不能保证std::thread::hardware_concurrency将被STL...
m.可能是一个AI，并且提到了Jérôme Richard，因此不能保证std::thread::hardware_concurrency将被STL...
#include <iostream> #include <thread> int main() { unsigned int n = std::thread::hardware_concurrency(); std::cout << n << " concurrent threads are supported.\n"; } 可能的输出: 4 concurrent threads are supported.参阅hardware_destructive_interference_sizehardware_constructive_interference_si...