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push_finalize_hook - Kokkos documentation

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push_finalize_hook¶

Defined in header <Kokkos_Core.hpp>

Usage¶

Kokkos::push_finalize_hook(func);

Registers the callable object func to be called when the Kokkos execution environment is terminated.

The functions registered via Kokkos::push_finalize_hook() will be called in reverse order when entering Kokkos::finalize(), before releasing acquired resources and finalizing all backends.

If a function exits via a thrown exception, std::terminate is called.

Interface¶

void push_finalize_hook(std::function<void()> func);¶: Register the function object func to be called when entering Kokkos::finalize()

Example¶

#include <Kokkos_Core.hpp>
#include <iostream>

void my_hook() {
  std::cout << "Cruel world!\n";
}

int main(int argc, char* argv[]) {
    Kokkos::initialize(argc, argv);
    Kokkos::push_finalize_hook(my_hook);
    Kokkos::push_finalize_hook([]{ std::cout << "Goodbye\n"; });
    std::cout << "Calling Kokkos::finalize() ...\n";
    Kokkos::finalize();
}

Output:

Calling Kokkos::finalize() ...
Goodbye
Cruel world!