diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/Makefile.am | 12 | ||||
| -rw-r--r-- | examples/h5_debug_trace.c | 144 | ||||
| -rw-r--r-- | examples/run-c-ex.sh.in | 5 |
3 files changed, 155 insertions, 6 deletions
diff --git a/examples/Makefile.am b/examples/Makefile.am index 8c6540f..6665574 100644 --- a/examples/Makefile.am +++ b/examples/Makefile.am @@ -35,9 +35,9 @@ EXAMPLE_PROG = h5_write h5_read h5_extend_write h5_chunk_read h5_compound \ h5_crtgrpd h5_subset h5_cmprss h5_rdwt h5_crtgrpar h5_extend \ h5_crtatt h5_crtgrp h5_crtdat \ h5_group h5_select h5_attribute h5_mount h5_reference h5_drivers \ - h5_ref2reg h5_extlink h5_elink_unix2win h5_shared_mesg h5_vds h5_vds-exc \ - h5_vds-exclim h5_vds-eiger h5_vds-simpleIO h5_vds-percival \ - h5_vds-percival-unlim h5_vds-percival-unlim-maxmin + h5_ref2reg h5_extlink h5_elink_unix2win h5_shared_mesg h5_debug_trace \ + h5_vds h5_vds-exc h5_vds-exclim h5_vds-eiger h5_vds-simpleIO \ + h5_vds-percival h5_vds-percival-unlim h5_vds-percival-unlim-maxmin TEST_SCRIPT=testh5cc.sh TEST_EXAMPLES_SCRIPT=$(INSTALL_SCRIPT_FILES) @@ -48,9 +48,9 @@ INSTALL_FILES = h5_write.c h5_read.c h5_extend_write.c h5_chunk_read.c \ h5_extend.c h5_crtatt.c h5_crtgrp.c h5_crtdat.c \ h5_compound.c h5_group.c h5_select.c h5_attribute.c h5_mount.c \ h5_reference.c h5_drivers.c h5_extlink.c h5_elink_unix2win.c \ - h5_ref2reg.c h5_shared_mesg.c ph5example.c h5_vds.c h5_vds-exc.c \ - h5_vds-exclim.c h5_vds-eiger.c h5_vds-simpleIO.c h5_vds-percival.c \ - h5_vds-percival-unlim.c h5_vds-percival-unlim-maxmin.c + h5_ref2reg.c h5_shared_mesg.c h5_debug_trace.c ph5example.c \ + h5_vds.c h5_vds-exc.c h5_vds-exclim.c h5_vds-eiger.c h5_vds-simpleIO.c \ + h5_vds-percival.c h5_vds-percival-unlim.c h5_vds-percival-unlim-maxmin.c diff --git a/examples/h5_debug_trace.c b/examples/h5_debug_trace.c new file mode 100644 index 0000000..3d89ba4 --- /dev/null +++ b/examples/h5_debug_trace.c @@ -0,0 +1,144 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * Copyright by the Board of Trustees of the University of Illinois. * + * All rights reserved. * + * * + * This file is part of HDF5. The full HDF5 copyright notice, including * + * terms governing use, modification, and redistribution, is contained in * + * the files COPYING and Copyright.html. COPYING can be found at the root * + * of the source code distribution tree; Copyright.html can be found at the * + * root level of an installed copy of the electronic HDF5 document set and * + * is linked from the top-level documents page. It can also be found at * + * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/* This example demonstrates debug trace output. + * + * Debug/trace/performance output is not tested as a regular part of our + * testing so this program gives a quick check that it's all working. + * + * Preconditions: + * + * You need to set an environment variable named HDF5_DEBUG to have a value + * of "+all trace ttimes". In the bash shell, you'd use: + * + * export HDF5_DEBUG="+all trace ttimes" + * + * When you are done with this test program, you can set the variable back + * to "-all" to suppress trace output. + * + * Usage: + * + * Compile and run the test program, then inspect the output. You should see + * trace information for each HDF5 function call that increase over time. + * Each time stamp is in seconds and designated with an '@' sign. The + * elapsed time for the function call is given in seconds in the [dt= ] + * part. + * + * You will also get summary output for the shuffle filter performance and + * data type conversion performance. These will include the elapsed time + * (always) and the system and user times (if available on your system). On + * fast machines, these numbers may be 0.0. Adjust the loop variables in + * the program as needed to generate reasonable output. + */ + +#include <stdio.h> +#include <stdlib.h> + +#include "hdf5.h" + +#define BUF_SIZE 1048576 +#define N_LOOPS 64 + +#define TESTFILE "h5_debug_trace_out.h5" + +int +main(int argc, char **argv) +{ + int i, j; + int *data; + + hid_t fid; + hid_t pid; + hid_t did; + hid_t sid; + + hsize_t dims[1] = { BUF_SIZE }; + hsize_t chunk_sizes[1] = { 1024 }; + + herr_t err; + + /*************************************************************************/ + + /* Warn the user about trace deluge to come */ + + printf("Testing debug/trace/performance data generation\n"); + printf("\n"); + printf("This test should generate a large amount of trace data\n"); + printf("\n"); + printf("*** BEGIN TRACE OUTPUT ***\n"); + printf("\n"); + fflush(stdout); + + /* This will emit H5Tconvert() performance information */ + + for(i = 0; i < N_LOOPS; i++) { + + /* The buffer has to be large enough to hold the conversion output */ + data = (int *)malloc(BUF_SIZE * sizeof(double)); + + for(j = 0; j < BUF_SIZE; j++) { + data[j] = j; + } + + err = H5Tconvert(H5T_NATIVE_INT, H5T_NATIVE_DOUBLE, BUF_SIZE, data, + NULL, H5P_DEFAULT); + + if(err < 0) { + fprintf(stderr, "ERROR: Conversion failed\n"); + free(data); + return err; + } + + free(data); + + } + + + /* This will emit H5Z performance information */ + + data = (int *)malloc(BUF_SIZE * sizeof(int)); + + for(i = 0; i < BUF_SIZE; i++) { + data[i] = i; + } + + fid = H5Fcreate(TESTFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT); + + pid = H5Pcreate(H5P_DATASET_CREATE); + err = H5Pset_chunk(pid, 1, chunk_sizes); + err = H5Pset_shuffle(pid); + + sid = H5Screate_simple(1, dims, dims); + did = H5Dcreate(fid, "somedata", H5T_NATIVE_INT, sid, H5P_DEFAULT, pid, H5P_DEFAULT); + err = H5Dwrite(did, H5T_NATIVE_INT, sid, sid, H5P_DEFAULT, data); + + H5Sclose(sid); + H5Dclose(did); + H5Pclose(pid); + H5Fclose(fid); + + free(data); + + /* Finished */ + fflush(stdout); + printf("\n"); + printf("*** END TRACE OUTPUT ***\n"); + printf("\n"); + + remove(TESTFILE); + + return 0; +} + diff --git a/examples/run-c-ex.sh.in b/examples/run-c-ex.sh.in index 4d5d594..f550992 100644 --- a/examples/run-c-ex.sh.in +++ b/examples/run-c-ex.sh.in @@ -122,6 +122,11 @@ then rm h5_extlink &&\ RunTest h5_elink_unix2win &&\ rm h5_elink_unix2win &&\ + OLD_DEBUG_STRING=$HDF5_DEBUG &&\ + export HDF5_DEBUG="+all +trace +ttimes" &&\ + RunTest h5_debug_trace &&\ + HDF5_DEBUG=$OLD_DEBUG_STRING &&\ + rm h5_debug_trace &&\ RunTest h5_shared_mesg &&\ rm h5_shared_mesg &&\ RunTest h5_vds-eiger &&\ |