mirror of https://github.com/ecmwf/eccodes.git
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/*
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* (C) Copyright 2005- 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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#include <pthread.h>
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#include "grib_api_internal.h"
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#include "eccodes.h"
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#define NUM_THREADS 4
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/* Return 0 if numbers considered equal, otherwise 1 */
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static int compare_doubles(double a, double b, double tolerance)
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{
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int ret = 0;
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double d = fabs(a - b);
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if (d > tolerance) {
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ret = 1;
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}
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return ret;
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}
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static void* process_grib(void* threadID)
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{
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const long tid = (long)threadID;
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size_t str_len = 20, i = 0;
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long indicatorOfUnitOfTimeRange = 1, step = 0;
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char mystring[100];
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double* values = NULL;
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size_t values_len = 0;
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double min = 0, max = 0, avg = 0;
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const double tol = 1e-6;
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double pv[4] = { 1, 2, 3, 4 };
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const size_t pvsize = 4;
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ProductKind prod_kind = 0;
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codes_handle* h = codes_grib_handle_new_from_samples(0, "regular_ll_pl_grib2");
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Assert(h);
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CODES_CHECK(codes_get_product_kind(h, &prod_kind), 0);
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Assert(prod_kind == PRODUCT_GRIB);
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printf("Thread %ld running\n", tid);
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CODES_CHECK(codes_set_long(h, "indicatorOfUnitOfTimeRange", indicatorOfUnitOfTimeRange), 0);
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CODES_CHECK(codes_set_string(h, "indicatorOfUnitOfTimeRange", "s", &str_len), 0);
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CODES_CHECK(codes_set_string(h, "stepUnits", "s", &str_len), 0);
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CODES_CHECK(codes_set_long(h, "endStep", 86400), 0);
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CODES_CHECK(codes_set_long(h, "centre", 80), 0);
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CODES_CHECK(codes_get_long(h, "endStep", &step), 0);
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CODES_CHECK(codes_get_string(h, "indicatorOfUnitOfTimeRange", mystring, &str_len), 0);
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CODES_CHECK(codes_set_long(h, "PVPresent", 1), 0);
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CODES_CHECK(codes_set_double_array(h, "pv", pv, pvsize), 0);
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CODES_CHECK(codes_get_size(h, "values", &values_len), 0);
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values = (double*)malloc(values_len * sizeof(double));
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CODES_CHECK(codes_get_double_array(h, "values", values, &values_len), 0);
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for (i = 0; i < values_len; i++) {
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if (i % 2)
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values[i] *= 0.94;
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else if (i % 3)
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values[i] *= 0.84;
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}
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GRIB_CHECK(grib_set_double_array(h, "values", values, values_len), 0);
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free(values);
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CODES_CHECK(codes_get_double(h, "min", &min), 0);
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CODES_CHECK(codes_get_double(h, "max", &max), 0);
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CODES_CHECK(codes_get_double(h, "avg", &avg), 0);
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printf("Thread %ld: min=%g max=%g avg=%g\n", tid, min, max, avg);
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Assert(compare_doubles(min, 0.84, tol) == 0);
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Assert(compare_doubles(max, 1.00, tol) == 0);
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Assert(compare_doubles(avg, 0.916774, tol) == 0);
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codes_handle_delete(h);
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pthread_exit(NULL);
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}
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int main(int argc, char** argv)
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{
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pthread_t threads[NUM_THREADS];
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int error = 0;
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long i = 0;
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for (i = 0; i < NUM_THREADS; ++i) {
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printf("Creating thread %ld\n", i);
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error = pthread_create(&threads[i], NULL, process_grib, (void*)i);
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if (error) {
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Assert(0);
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return 1;
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}
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}
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for (i = 0; i < NUM_THREADS; ++i) {
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pthread_join(threads[i], NULL);
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}
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return 0;
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}
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