mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-27 08:49:16 +08:00
d2316f866c
Primary Fixes: * Add a whole variable optimization -- used in the rare case that nc_get/put_vara covers the whole of a variable and the variable has a single chunk. * Fix chunking error when stride causes whole chunks to be skipped. * Fix some memory leaks * Add test cases * Add one performance test to nczarr_test/. This uses the timer utils from unit_test: timer_utils.[ch]. * Move ncdumpchunks utility from ncdump to nczarr_test Misc. Other Changes: * Make check for aws libraries conditional on --enable-nczarr-s3 * Remove all but one bm tests from nczarr_test until they are working. * Remove another dependency on HDF5 from supposedly non-HDF5 specific code; specifically hdf5_log_hdf5. * Make the BAIL2 macro be hdf5 specific and replace elsewhere with an HDF5 independent equivalent. * Move hdf5cache.c to libsrc4/nc4cache.c because it is used by nczarr. * Modify unit_tests so that some of them are run even if using Windows. * Misc. small bug fixes and refactors and memory leaks. * Rename some conflicting tests for cmake. * Attempted to make nc_perf work with cmake and failed.
171 lines
4.1 KiB
C
171 lines
4.1 KiB
C
/*********************************************************************
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* Copyright 2020, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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*********************************************************************/
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef HAVE_SYS_RESOURCE_H
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#include <sys/resource.h>
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#endif
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#include "timer_utils.h"
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#undef DEBUG
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static int NCT_initialized = 0;
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#ifdef _WIN32
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LARGE_INTEGER frequency;
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LARGE_INTEGER starttime;
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void
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NCT_inittimer(void)
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{
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if(NCT_initialized) return;
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#ifdef DEBUG
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fprintf(stderr,"timer mechanism: QueryPerformanceCounter\n");
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#endif
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LARGE_INTEGER li;
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(void)QueryPerformanceFrequency(&frequency);
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QueryPerformanceCounter(&starttime);
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#ifdef DEBUG
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fprintf(stderr,"frequency=%lld starttime=%lld\n",frequency.QuadPart,starttime.QuadPart);
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#endif
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NCT_initialized = 1;
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}
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#else
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void
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NCT_inittimer(void)
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{
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if(NCT_initialized) return;
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#ifdef DEBUG
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#if defined HAVE_CLOCK_GETTIME
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fprintf(stderr,"timer mechanism: clock_gettime\n");
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#elif defined HAVE_GETTIMEOFDAY
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fprintf(stderr,"timer mechanism: gettimeofday\n");
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#elif defined HAVE_GETRUSAGE
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fprintf(stderr,"timer mechanism: getrusage\n");
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#else
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fprintf(stderr,"timer mechanism: Unknown\n");
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#endif
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#endif /*DEBUG*/
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NCT_initialized = 1;
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}
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#endif
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void
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NCT_marktime(Nanotime* nt)
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{
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#ifdef _WIN32
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LARGE_INTEGER endtime;
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QueryPerformanceCounter(&endtime);
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nt->tv_sec = endtime.QuadPart / 1000000000;
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nt->tv_nsec = endtime.QuadPart % 1000000000;
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#ifdef DEBUG
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fprintf(stderr,"endtime=%lld\n",endtime.QuadPart);
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#endif
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#endif
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#ifndef _WIN32
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/* Pick one */
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#ifdef HAVE_CLOCK_GETTIME
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clockid_t clk_id = CLOCK_MONOTONIC;
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struct timespec t;
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clock_gettime(clk_id,&t);
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nt->tv_sec = (long long)t.tv_sec;
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nt->tv_nsec = (long long)t.tv_nsec;
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#elif defined HAVE_GETTIMEOFDAY
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struct timeval tp;
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gettimeofday(&tp, NULL);
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nt->tv_sec = (long long)tp.tv_sec;
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nt->tv_nsec = 1000*(long long)tp.tv_usec;
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# elif defined HAVE_GETRUSAGE
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struct rusage ru;
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getrusage(RUSAGE_SELF, &ru);
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nt->tv_sec = (long long)(ru.ru_utime.tv_sec + ru.ru_stime.tv_sec);
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nt->tv_nsec = (long long)(1000*(ru.ru_utime.tv_usec + ru.ru_stime.tv_usec));
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#endif
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#endif
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}
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void
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NCT_elapsedtime(Nanotime* nt0, Nanotime* nt1, Nanotime* delta)
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{
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long long nsec[2];
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long long deltansec;
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nsec[0] = nt0->tv_nsec+(1000000000 * nt0->tv_sec);
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nsec[1] = nt1->tv_nsec+(1000000000 * nt1->tv_sec);
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deltansec = nsec[1] - nsec[0];
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delta->tv_nsec = deltansec % 1000000000;
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delta->tv_sec = deltansec / 1000000000;
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#ifdef DEBUG
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fprintf(stderr,"delta=(%lld,%lld)\n",delta->tv_sec,delta->tv_nsec);
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#endif
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}
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int
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NCT_reporttime(unsigned nelems, Nanotime* times, struct TimeRange range, const char* tag)
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{
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Nanotime delta;
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long long nsec,avg;
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double dnsec,dsec,davg;
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NCT_elapsedtime(×[0],×[1],&delta);
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nsec = NCT_nanoseconds(delta);
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avg = nsec / nelems;
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#ifdef DEBUG
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fprintf(stderr,"nsec=%lld avg=%lld\n",nsec,avg);
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#endif
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dnsec = (double)nsec;
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dsec = dnsec / 1000000000.0;
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#ifdef DEBUG
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fprintf(stderr,"dsec=%g dnsec=%g\n",dsec,dnsec);
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#endif
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davg = (dnsec/nelems);
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fprintf(stderr,"\t%s:\t%8.6lf sec",tag,dsec);
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fprintf(stderr," avg=%5.2lf nsec\n",davg);
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#ifdef DEBUG
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fprintf(stderr,"range: min=%lld max=%lld\n",range.min,range.max);
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#endif
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if(!NCT_rangetest(avg,range)) {
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fprintf(stderr,"*** WARNING: unexpectedly large timing values%s\n",tag);
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}
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return 1;
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}
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long long
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NCT_nanoseconds(Nanotime time)
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{
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return (time.tv_sec * 1000000000) + time.tv_nsec;
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}
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/* Provide a time range tester */
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int
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NCT_rangetest(long long nsec, struct TimeRange range)
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{
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if(nsec < range.min) {
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fprintf(stderr,"range: time=%lld < min=%lld\n",nsec,range.min);
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return 0;
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}
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if(nsec > range.max) {
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fprintf(stderr,"range: time=%lld > max=%lld\n",nsec,range.max);
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return 0;
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}
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return 1;
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}
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