Timer

class numpy::Timer

numpy C++ class.

Example

#include <numpy/np_ndarray.h>
using namespace numpy;

// Use Timer
Timer obj;
// ... operations ...

Other Methods

Signature	Return Type	Location	Example
double elapsed_milliseconds()	double	NP_BENCHMARK_SORTING.H:46	View
void start()	void	NP_BENCHMARK_SORTING.H:42	View

Code Examples

The following examples are extracted from the test suite.

elapsed_milliseconds (np_test_1_all.cpp:6048)

void test_timer_accuracyBenchmarkSorting() {
    std::cout << "========= test_timer_accuracy =======================";

    Timer timer;
    timer.start();

    // Sleep for a known duration (10ms)
    std::this_thread::sleep_for(std::chrono::milliseconds(10));

    double elapsed = timer.elapsed_milliseconds();

    // Timer should be approximately 10ms (allow 5ms tolerance for system variance)
    if (!(elapsed >= 3.0 && elapsed <= 105.0)) {
        std::string description = std::string("test_timer_accuracyBenchmarkSorting():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(elapsed >= 3.0 && elapsed <= 105.0)";
        std::cout << std::string("[FAIL] ") + description << std::endl;
        throw std::runtime_error(description);
    }
    // std::cout << "Timer accuracy test passed. Elapsed: " << elapsed << " ms" << std::endl;

    std::cout << " -> tests passed" << std::endl;

start (np_test_1_all.cpp:6043)

    std::cout << " -> tests passed" << std::endl;
}

// ------ merging np_test_benchmark_sorting.cpp -- number of functions merged= 11 --------------------------------

void test_timer_accuracyBenchmarkSorting() {
    std::cout << "========= test_timer_accuracy =======================";

    Timer timer;
    timer.start();

    // Sleep for a known duration (10ms)
    std::this_thread::sleep_for(std::chrono::milliseconds(10));

    double elapsed = timer.elapsed_milliseconds();

    // Timer should be approximately 10ms (allow 5ms tolerance for system variance)
    if (!(elapsed >= 3.0 && elapsed <= 105.0)) {
        std::string description = std::string("test_timer_accuracyBenchmarkSorting():") + __FILE__ + ":" + std::to_string(__LINE__) + ": !(elapsed >= 3.0 && elapsed <= 105.0)";
        std::cout << std::string("[FAIL] ") + description << std::endl;