傳回硬體執行緒內容數目估計的靜態方法。 static unsigned int hardware_concurrency() _NOEXCEPT; 傳回值 硬體執行緒內容數目的專案。如果值無法計算也不是明確定義的,則這個方法會傳回 0。 需求 標題:執行緒 命名空間:可以 請參閱 參考 thread Class <thread>
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::...
问处理std::thread::hardware_concurrency()EN取走直接用，当个 demo 挺好的。 线程开多了也没用，...
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...
C++ std::thread::hardware_concurrency() 获取CPU核心数,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()不返回AMD线程解写程序3990x中正确的逻辑处理器数EN大型的软件...
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. Parameters (none) Return value ...
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...
Describe the bug When attempting to add vectors to the index using a number of threads that execeeds the hardware concurrency as reported by std::thread::hardware_concurrency(), a crash happens. Stack trace from a test (with AddressSanit...
What is the best way to get the max number of physical threads, thread::hardware_concurrency or task_scheduler_init::default_num_threads? Do these static methods return the same number?Just curios, why the first one returns unsigned, but the second one returns int?The latetr one was part...