mirror of https://github.com/ecmwf/eccodes.git
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* Copyright 2005-2018 ECMWF.
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*
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* This software is licensed under the terms of the Apache Licence Version 2.0
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* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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*
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* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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*/
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/*
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* Description: Reads a GRIB message from file, measures read time.
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*
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*/
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#include <stdio.h>
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#include <assert.h>
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#include "grib_api_internal.h"
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static void usage(const char* prog) {
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printf("usage: %s filename\n",prog);
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exit(1);
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}
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#ifdef GRIB_TIMER
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int main(int argc, char** argv)
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{
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grib_timer *tes = grib_get_timer(0,"decoding", 0, 0);
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FILE *in = NULL;
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int err = 0, i = 0;
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grib_handle *h = NULL;
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size_t values_len = 0;
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double *values = NULL;
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double duration_actual = 0;
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const double duration_max = 3; /* seconds */
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const int num_repetitions = 1000;
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if (argc<2) usage(argv[0]);
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in = fopen(argv[1],"r");
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if(!in) {
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printf("ERROR: unable to open file %s\n",argv[1]);
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return 1;
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}
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/* create new handle from a message in a file*/
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err = 0;
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h = grib_handle_new_from_file(0,in,&err);
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if (h == NULL) {
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printf("Error: unable to create handle from file.\n");
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return 1;
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}
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/* get the size of the values array*/
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GRIB_CHECK(grib_get_size(h,"values",&values_len),0);
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values = malloc(values_len*sizeof(double));
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/* get data values*/
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grib_timer_start(tes);
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for (i=0; i<num_repetitions; i++) {
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GRIB_CHECK(grib_get_double_array(h,"values",values,&values_len),0);
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}
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grib_timer_stop(tes,0);
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duration_actual = grib_timer_value(tes);
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if (duration_actual > duration_max) {
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fprintf(stderr, "Decoding took longer than expected! actual time=%g, expected to take less than %g seconds",
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duration_actual, duration_max);
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return 1;
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}
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printf("Test passed. Actual decode time=%g\n", duration_actual);
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free(values);
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grib_handle_delete(h);
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fclose(in);
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return 0;
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}
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#else
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int main(int argc, char** argv) { return 0; }
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#endif
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