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82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/* This is part of the netCDF package. Copyright 2020 University
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Corporation for Atmospheric Research/Unidata See COPYRIGHT file for
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conditions of use.
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Test internal netcdf-4 file code for memory leaks. This test was
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suggest by Jeff Whitaker. See
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https://github.com/Unidata/netcdf-c/issues/1575.
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This was removed from the list of tests run in this
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directory. Sometimes it fails on very busy systems even though
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everything is fine. Ed - 8/9/21
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Ed Hartnett 2/9/20
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*/
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#include <config.h>
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#include <nc_tests.h>
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#include <err_macros.h>
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#ifdef HAVE_SYS_RESOURCE_H
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#include <sys/resource.h>
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#else
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#error "cannot use rusage"
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#endif
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#define FILE_NAME "tst_mem1.nc"
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#define NUM_FILE_OPENS 100
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int main()
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{
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int ncid, varid, idx;
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struct rusage r_usage;
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printf("\n*** Testing netcdf-4 memory use.\n");
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printf("*** testing mem use opening/closing file...");
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{
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long my_rss = 0;
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int my_idx = -1;
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int at_max = 0;
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NC_UNUSED(my_idx); NC_UNUSED(at_max);
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if (nc_create(FILE_NAME, NC_CLOBBER | NC_NETCDF4, &ncid)) ERR;
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/* if (nc_create(FILE_NAME, NC_CLOBBER, &ncid)) ERR; */
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if (nc_def_var(ncid, "dummy", NC_DOUBLE, 0, NULL, &varid)) ERR;
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if (nc_close(ncid)) ERR;
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for (idx = 0; idx < NUM_FILE_OPENS; idx++)
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{
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if (nc_open(FILE_NAME, NC_NOWRITE, &ncid)) ERR;
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if (nc_close(ncid)) ERR;
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getrusage(RUSAGE_SELF, &r_usage);
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/* if (!(idx % 100)) */
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/* printf("Memory usage: %ld kilobytes\n",r_usage.ru_maxrss); */
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/* Memory usage goes up in the first couple of opens, but
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* should then remain steady. Check that it does not
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* change after some number of iterations; the expected number is 10. */
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#if 1
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if (!my_rss || idx < 10)
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my_rss = r_usage.ru_maxrss;
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else
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if (my_rss != r_usage.ru_maxrss) ERR;
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#else
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/* Locate the monotonic maximum */
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if(my_rss < r_usage.ru_maxrss) {
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my_rss = r_usage.ru_maxrss;
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my_idx = idx;
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} else if(my_rss > r_usage.ru_maxrss) {
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fprintf(stderr,"decrease: from: [%d] %ld to [%d] %ld\n",my_idx,my_rss,idx,r_usage.ru_maxrss);
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ERR;
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} else {
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if(!at_max)
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fprintf(stderr,"maximum: [%d] %ld\n",idx,r_usage.ru_maxrss);
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at_max = 1;
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}
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#endif
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};
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}
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SUMMARIZE_ERR;
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FINAL_RESULTS;
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}
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