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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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include "grib_api_internal.h"
#define NUM_THREADS 8
#define FILES_PER_ITERATION 10
char* INPUT_FILE = NULL;
void do_stuff(void* data);
void* runner(void* ptr); /* the thread function */
int main(int argc, char** argv)
{
long i;
int thread_counter = 0;
pthread_t workers[NUM_THREADS];
INPUT_FILE = argv[1];
/* Create worker threads */
for (i = 0; i < NUM_THREADS; i++) {
/* Now we will create the thread passing it data as a paramater*/
pthread_create(&workers[thread_counter], NULL, runner, (void*)i);
thread_counter++;
}
/* Waiting for threads to complete */
for (i = 0; i < NUM_THREADS; i++) {
pthread_join(workers[i], NULL);
}
return 0;
}
void* runner(void* ptr)
{
do_stuff(ptr);
pthread_exit(0);
}
static int encode_file(const char* input_file, const char* output_file)
{
grib_handle* source_handle = NULL;
const void* buffer = NULL;
int err = 0;
FILE* in = fopen(input_file, "rb");
FILE* out = fopen(output_file, "wb");
ECCODES_ASSERT(in);
ECCODES_ASSERT(out);
while ((source_handle = grib_handle_new_from_file(0, in, &err)) != NULL) {
size_t size = 0, values_len = 0;
int i;
double* values = NULL;
long count;
double d, e;
grib_handle* clone_handle = grib_handle_clone(source_handle);
ECCODES_ASSERT(clone_handle);
GRIB_CHECK(grib_get_size(clone_handle, "values", &values_len), 0);
values = (double*)malloc(values_len * sizeof(double));
d = 10e-10;
e = d;
count = 1;
for (i = 0; i < values_len; i++) {
if (count > 1000) {
e *= 2;
count = 1;
}
values[i] = d;
d += e;
count++;
}
GRIB_CHECK(grib_set_long(clone_handle, "bitsPerValue", 16), 0);
/*GRIB_CHECK(grib_set_string(clone_handle, "packingType", "grid_ccsds", &str_len), 0);*/
/*GRIB_CHECK(grib_set_string(clone_handle, "packingType", "grid_simple", &str_len), 0);*/
GRIB_CHECK(grib_set_double_array(clone_handle, "values", values, values_len), 0);
/* get the coded message in a buffer */
GRIB_CHECK(grib_get_message(clone_handle, &buffer, &size), 0);
/* write the buffer to a file */
if (fwrite(buffer, 1, size, out) != size) {
perror(output_file);
return 1;
}
grib_handle_delete(clone_handle);
grib_handle_delete(source_handle);
free(values);
}
fclose(out);
fclose(in);
return 0;
}
void do_stuff(void* arg)
{
long number = (long)arg;
char output_file[50];
int i;
for (i = 0; i < FILES_PER_ITERATION; i++) {
snprintf(output_file, 50, "temp.grib_encode_pthreads_test.out_%d-%d.grib", (int)number, i);
encode_file(INPUT_FILE, output_file);
}
}
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