std::jthread::hardware_concurrency
[[nodiscard]] 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.
Parameters
(none).
Return value
Number of concurrent threads supported. If the value is not well defined or not computable, returns 0.
Example
#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.
See also
|
(C++17)
|
min offset to avoid false sharing max offset to promote true sharing (constant) |
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