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/*
* (C) Copyright 2005- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
*
* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
*/
/*
* Description: Reads a GRIB message from file, measures time taken
*/
#include "grib_api_internal.h"
#include <chrono>
#include <iostream>
using namespace std::chrono;
using std::cout, std::cerr, std::endl;
int main(int argc, char** argv)
{
int err = 0;
size_t values_len = 0;
double* values = NULL;
#ifdef DEBUG
const auto duration_max = std::chrono::milliseconds(1500);
#else
const auto duration_max = std::chrono::milliseconds(600);
#endif
const int num_repetitions = 100;
if (argc < 2) return 1;
FILE* in = fopen(argv[1], "rb");
ECCODES_ASSERT(in);
// create new handle
err = 0;
grib_handle* h = grib_handle_new_from_file(0, in, &err);
ECCODES_ASSERT(h);
// get the size of the values array
GRIB_CHECK(grib_get_size(h, "values", &values_len), 0);
values = (double*)malloc(values_len * sizeof(double));
// get data values and time it
auto start = high_resolution_clock::now();
for (int i = 0; i < num_repetitions; i++) {
GRIB_CHECK(grib_get_double_array(h, "values", values, &values_len), 0);
}
auto stop = high_resolution_clock::now();
auto duration_actual = duration_cast<milliseconds>(stop - start);
if (duration_actual > duration_max) {
cerr << "ERROR: Decoding took longer than expected! actual time=" << duration_actual.count() <<
" ms, expected " << duration_max.count() << " ms" << endl;
return 1;
}
cout << "Test passed. Actual decode time = " << duration_actual.count() << " ms" <<endl;
cout << "Test passed. Maximum decode time = " << duration_max.count() << " ms" <<endl;
free(values);
grib_handle_delete(h);
fclose(in);
return 0;
}
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