std::jthread::hardware_concurrency
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std::jthread
Member functions
Observers
jthread::hardware_concurrency
Operations
Stop token handling
Non-member functions
static unsigned int hardware_concurrency() noexcept;
(since C++20)
Returns the number of concurrent threads supported by the implementation. The value should be considered only a hint.
Contents
[edit] Parameters
(none)
[edit] Return value
Number of concurrent threads supported. If the value is not well defined or not computable, returns 0.
[edit] Example
Run this code
#include <iostream> #include <thread> int main() { unsigned int n = std::jthread::hardware_concurrency(); std::cout << n << " concurrent threads are supported.\n"; }
Possible output:
4 concurrent threads are supported.