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83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/* This is part of the netCDF package.
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Copyright 2018 University Corporation for Atmospheric Research/Unidata
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See COPYRIGHT file for conditions of use.
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Test memory use of a netCDF-4 file with unlimited dimensions.
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Ed Hartnett
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*/
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#include <config.h>
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#include <stdio.h>
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#include <nc_tests.h>
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#include <err_macros.h>
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#include "netcdf.h"
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#include <hdf5.h>
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#include <unistd.h>
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#include <time.h>
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#include <sys/time.h> /* Extra high precision time info. */
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#include <string.h>
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#define NDIMS 1
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#define FILE_NAME "tst_mem.nc"
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#define NUM_TRIES 20000
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#define TIME_NAME "time"
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#define SFC_TEMP_NAME "sfc_temp"
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void
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get_mem_used2(int *mem_used)
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{
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char buf[30];
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FILE *pf;
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snprintf(buf, 30, "/proc/%u/statm", (unsigned)getpid());
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pf = fopen(buf, "r");
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if (pf) {
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unsigned size; /* total program size */
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unsigned resident;/* resident set size */
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unsigned share;/* shared pages */
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unsigned text;/* text (code) */
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unsigned lib;/* library */
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unsigned data;/* data/stack */
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/*unsigned dt; dirty pages (unused in Linux 2.6)*/
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fscanf(pf, "%u %u %u %u %u %u", &size, &resident, &share,
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&text, &lib, &data);
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*mem_used = data;
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}
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else
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*mem_used = -1;
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fclose(pf);
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}
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int main(void)
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{
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int ncid, sfc_tempid;
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float data;
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int dimid;
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size_t l_index[NDIMS] = {10000};
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int mem_used, mem_used1;
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int i;
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printf("\n*** Testing netcdf-4 memory use with unlimited dimensions.\n");
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printf("*** testing with user-contributed code...");
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if (nc_create(FILE_NAME, NC_NETCDF4, &ncid)) ERR;
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if (nc_def_dim(ncid, TIME_NAME, NC_UNLIMITED, &dimid)) ERR;
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if (nc_def_var(ncid, SFC_TEMP_NAME, NC_FLOAT, NDIMS, &dimid, &sfc_tempid)) ERR;
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/* Write data each 100ms*/
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get_mem_used2(&mem_used);
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for (i = 0; i < NUM_TRIES; i++)
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{
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data = 25.5 + l_index[0];
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if (nc_put_var1_float(ncid, sfc_tempid, l_index, (const float*) &data)) ERR;
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l_index[0]++;
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get_mem_used2(&mem_used1);
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if (!(i%100) && mem_used1 - mem_used)
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printf("delta %d bytes of memory for try %d\n", mem_used1 - mem_used, i);
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}
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if (nc_close(ncid)) ERR;
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SUMMARIZE_ERR;
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FINAL_RESULTS;
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}
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