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516 lines
18 KiB
C
516 lines
18 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the LICENSE file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*-------------------------------------------------------------------------
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*
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* Created: swmr_remove_reader.c
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*
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* Purpose: Reads data from a randomly selected subset of the datasets
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* in the SWMR test file. Unlike the regular reader, these
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* datasets will be shrinking.
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*
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* This program is intended to run concurrently with the
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* swmr_remove_writer program.
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*
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*-------------------------------------------------------------------------
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*/
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/***********/
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/* Headers */
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/***********/
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#include "h5test.h"
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#include "swmr_common.h"
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/*******************/
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/* Local Variables */
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/*******************/
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static hid_t symbol_tid = H5I_INVALID_HID;
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/********************/
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/* Local Prototypes */
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/********************/
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static int check_dataset(hid_t fid, unsigned verbose, const char *sym_name, symbol_t *record, hid_t rec_sid);
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static int read_records(const char *filename, unsigned verbose, unsigned long nseconds, unsigned poll_time,
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unsigned ncommon, unsigned nrandom);
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static void usage(void);
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/*-------------------------------------------------------------------------
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* Function: check_dataset
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*
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* Purpose: For a given dataset, checks to make sure that the stated
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* and actual sizes are the same. If they are not, then
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* we have an inconsistent dataset due to a SWMR error.
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*
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* Parameters: hid_t fid
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* The SWMR test file's ID.
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*
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* unsigned verbose
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* Whether verbose console output is desired.
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*
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* const char *sym_name
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* The name of the dataset from which to read.
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*
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* symbol_t *record
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* Memory for the record. Must be pre-allocated.
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*
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* hid_t rec_sid
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* The memory dataspace for access. It's always the same so
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* there is no need to re-create it every time this function
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* is called.
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*
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* Return: Success: 0
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* Failure: -1
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*
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*-------------------------------------------------------------------------
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*/
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static int
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check_dataset(hid_t fid, unsigned verbose, const char *sym_name, symbol_t *record, hid_t rec_sid)
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{
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hid_t dsid; /* Dataset ID */
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hid_t file_sid; /* Dataset's space ID */
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hssize_t snpoints; /* Number of elements in dataset */
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hsize_t start[2] = {0, 0}, count[2] = {1, 1}; /* Hyperslab selection values */
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assert(fid >= 0);
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assert(sym_name);
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assert(record);
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assert(rec_sid >= 0);
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/* Open dataset for symbol */
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if ((dsid = H5Dopen2(fid, sym_name, H5P_DEFAULT)) < 0)
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return -1;
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/* Get the dataset's dataspace */
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if ((file_sid = H5Dget_space(dsid)) < 0)
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return -1;
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/* Get the number of elements (= records, for 1-D datasets) */
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if ((snpoints = H5Sget_simple_extent_npoints(file_sid)) < 0)
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return -1;
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Symbol = '%s', # of records = %lld\n", sym_name, (long long)snpoints);
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/* Check if there are records for symbol */
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if (snpoints > 0) {
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/* Choose a random record in the dataset, choosing the last record half
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* the time */
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start[1] = (hsize_t)(rand() % (snpoints * 2));
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if (start[1] > (hsize_t)(snpoints - 1))
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start[1] = (hsize_t)(snpoints - 1);
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if (H5Sselect_hyperslab(file_sid, H5S_SELECT_SET, start, NULL, count, NULL) < 0)
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return -1;
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/* Read record from dataset */
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#ifdef FILLVAL_WORKS
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/* When shrinking the dataset, we cannot guarantee that the buffer will
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* even be touched, unless there is a fill value. Since fill values do
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* not work with SWMR currently (see note in swmr_generator.c), we
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* simply initialize rec_id to 0. */
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record->rec_id = (uint64_t)ULLONG_MAX - 1;
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#else /* FILLVAL_WORKS */
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record->rec_id = (uint64_t)0;
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#endif /* FILLVAL_WORKS */
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if (H5Dread(dsid, symbol_tid, rec_sid, file_sid, H5P_DEFAULT, record) < 0)
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return -1;
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/* Verify record value - note that it may be the fill value, because the
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* chunk may be deleted before the object header has the updated
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* dimensions */
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if (record->rec_id != start[1] && record->rec_id != (uint64_t)0) {
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fprintf(stderr, "*** ERROR ***\n");
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fprintf(stderr, "Incorrect record value!\n");
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fprintf(stderr, "Symbol = '%s', # of records = %lld, record->rec_id = %llx\n", sym_name,
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(long long)snpoints, (unsigned long long)record->rec_id);
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return -1;
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} /* end if */
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} /* end if */
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/* Close the dataset's dataspace */
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if (H5Sclose(file_sid) < 0)
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return -1;
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/* Close dataset for symbol */
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if (H5Dclose(dsid) < 0)
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return -1;
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return 0;
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} /* end check_dataset() */
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/*-------------------------------------------------------------------------
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* Function: read_records
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*
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* Purpose: For a given dataset, checks to make sure that the stated
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* and actual sizes are the same. If they are not, then
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* we have an inconsistent dataset due to a SWMR error.
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*
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* The "common" datasets are a random selection from among
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* the level 0 datasets. The "random" datasets are a random
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* selection from among all the file's datasets. This scheme
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* ensures that the level 0 datasets are interrogated vigorously.
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*
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* Parameters: const char *filename
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* The SWMR test file's name.
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*
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* unsigned verbose
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* Whether verbose console output is desired.
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*
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* unsigned long nseconds
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* The amount of time to read records (ns).
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*
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* unsigned poll_time
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* The amount of time to sleep (s).
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*
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* unsigned ncommon
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* The number of common/non-random datasets that will be opened.
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*
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* unsigned nrandom
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* The number of random datasets that will be opened.
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*
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* Return: Success: 0
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* Failure: -1
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*
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*-------------------------------------------------------------------------
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*/
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static int
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read_records(const char *filename, unsigned verbose, unsigned long nseconds, unsigned poll_time,
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unsigned ncommon, unsigned nrandom)
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{
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time_t start_time; /* Starting time */
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time_t curr_time; /* Current time */
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symbol_info_t **sym_com = NULL; /* Pointers to array of common dataset IDs */
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symbol_info_t **sym_rand = NULL; /* Pointers to array of random dataset IDs */
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hid_t mem_sid; /* Memory dataspace ID */
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hid_t fid; /* SWMR test file ID */
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hid_t fapl; /* File access property list */
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symbol_t record; /* The record to add to the dataset */
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unsigned v; /* Local index variable */
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assert(filename);
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assert(nseconds != 0);
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assert(poll_time != 0);
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/* Reset the record */
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/* (record's 'info' field might need to change for each record written, also) */
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memset(&record, 0, sizeof(record));
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Choosing datasets\n");
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/* Allocate space for 'common' datasets, if any */
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if (ncommon > 0) {
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/* Allocate array to hold pointers to symbols for common datasets */
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if (NULL == (sym_com = (symbol_info_t **)malloc(sizeof(symbol_info_t *) * ncommon)))
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return -1;
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/* Open the common datasets */
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for (v = 0; v < ncommon; v++) {
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unsigned offset; /* Offset of symbol to use */
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/* Determine the offset of the symbol, within level 0 symbols */
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/* (level 0 symbols are the most common symbols) */
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offset = (unsigned)rand() % symbol_count[0];
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sym_com[v] = &symbol_info[0][offset];
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Common symbol #%u = '%s'\n", v, symbol_info[0][offset].name);
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} /* end for */
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} /* end if */
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/* Allocate space for 'random' datasets, if any */
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if (nrandom > 0) {
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/* Allocate array to hold pointers to symbols for random datasets */
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if (NULL == (sym_rand = (symbol_info_t **)malloc(sizeof(symbol_info_t *) * nrandom)))
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return -1;
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/* Determine the random datasets */
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for (v = 0; v < nrandom; v++) {
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symbol_info_t *sym; /* Symbol to use */
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/* Determine the symbol, within all symbols */
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if (NULL == (sym = choose_dataset()))
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return -1;
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sym_rand[v] = sym;
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Random symbol #%u = '%s'\n", v, sym->name);
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} /* end for */
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} /* end if */
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/* Create a dataspace for the record to read */
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if ((mem_sid = H5Screate(H5S_SCALAR)) < 0)
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return -1;
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Reading records\n");
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/* Get the starting time */
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start_time = time(NULL);
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curr_time = start_time;
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/* Create file access property list */
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if ((fapl = h5_fileaccess()) < 0)
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return -1;
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/* Loop over reading records until [at least] the correct # of seconds have passed */
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while (curr_time < (time_t)(start_time + (time_t)nseconds)) {
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Opening file: %s\n", filename);
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/* Open the file */
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if ((fid = H5Fopen(filename, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ, fapl)) < 0)
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return -1;
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/* Check 'common' datasets, if any */
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if (ncommon > 0) {
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Checking common symbols\n");
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/* Iterate over common datasets */
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for (v = 0; v < ncommon; v++) {
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/* Check common dataset */
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if (check_dataset(fid, verbose, sym_com[v]->name, &record, mem_sid) < 0)
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return -1;
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memset(&record, 0, sizeof(record));
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} /* end for */
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} /* end if */
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/* Check 'random' datasets, if any */
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if (nrandom > 0) {
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Checking random symbols\n");
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/* Iterate over random datasets */
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for (v = 0; v < nrandom; v++) {
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/* Check random dataset */
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if (check_dataset(fid, verbose, sym_rand[v]->name, &record, mem_sid) < 0)
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return -1;
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memset(&record, 0, sizeof(record));
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} /* end for */
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} /* end if */
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Closing file\n");
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/* Close the file */
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if (H5Fclose(fid) < 0)
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return -1;
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/* Sleep for the appropriate # of seconds */
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HDsleep(poll_time);
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/* Retrieve the current time */
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curr_time = time(NULL);
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} /* end while */
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/* Close the fapl */
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if (H5Pclose(fapl) < 0)
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return -1;
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/* Close the memory dataspace */
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if (H5Sclose(mem_sid) < 0)
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return -1;
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Closing datasets\n");
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/* Close 'random' datasets, if any */
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if (nrandom > 0) {
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/* Release array holding dataset ID's for random datasets */
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free(sym_rand);
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} /* end if */
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/* Close 'common' datasets, if any */
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if (ncommon > 0) {
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/* Release array holding dataset ID's for common datasets */
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free(sym_com);
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} /* end if */
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return 0;
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} /* end read_records() */
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static void
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usage(void)
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{
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printf("\n");
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printf("Usage error!\n");
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printf("\n");
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printf("Usage: swmr_remove_reader [-q] [-s <# of seconds to sleep between\n");
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printf(" polling>] [-h <# of common symbols to poll>] [-l <# of random symbols\n");
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printf(" to poll>] [-r <random seed>] <# of seconds to test>\n");
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printf("\n");
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printf("Defaults to verbose (no '-q' given), 1 second between polling ('-s 1'),\n");
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printf("5 common symbols to poll ('-h 5'), 10 random symbols to poll ('-l 10'),\n");
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printf("and will generate a random seed (no -r given).\n");
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printf("\n");
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exit(EXIT_FAILURE);
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}
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int
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main(int argc, char *argv[])
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{
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long nseconds = 0; /* # of seconds to test */
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int poll_time = 1; /* # of seconds between polling */
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int ncommon = 5; /* # of common symbols to poll */
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int nrandom = 10; /* # of random symbols to poll */
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unsigned verbose = 1; /* Whether to emit some informational messages */
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unsigned use_seed = 0; /* Set to 1 if a seed was set on the command line */
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unsigned random_seed = 0; /* Random # seed */
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unsigned u; /* Local index variables */
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int temp;
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/* Parse command line options */
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if (argc < 2)
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usage();
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if (argc > 1) {
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u = 1;
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while (u < (unsigned)argc) {
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if (argv[u][0] == '-') {
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switch (argv[u][1]) {
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/* # of common symbols to poll */
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case 'h':
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ncommon = atoi(argv[u + 1]);
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if (ncommon < 0)
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usage();
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u += 2;
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break;
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/* # of random symbols to poll */
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case 'l':
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nrandom = atoi(argv[u + 1]);
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if (nrandom < 0)
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usage();
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u += 2;
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break;
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/* Be quiet */
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case 'q':
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verbose = 0;
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u++;
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break;
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/* Random # seed */
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case 'r':
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use_seed = 1;
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temp = atoi(argv[u + 1]);
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if (temp < 0)
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usage();
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else
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random_seed = (unsigned)temp;
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u += 2;
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break;
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/* # of seconds between polling */
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case 's':
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poll_time = atoi(argv[u + 1]);
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if (poll_time < 0)
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usage();
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u += 2;
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break;
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default:
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usage();
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break;
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} /* end switch */
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} /* end if */
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else {
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/* Get the number of records to append */
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nseconds = atol(argv[u]);
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if (nseconds <= 0)
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usage();
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u++;
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} /* end else */
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} /* end while */
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} /* end if */
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if (nseconds <= 0)
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usage();
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if (poll_time >= nseconds)
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usage();
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/* Emit informational message */
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if (verbose) {
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fprintf(stderr, "Parameters:\n");
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fprintf(stderr, "\t# of seconds between polling = %d\n", poll_time);
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fprintf(stderr, "\t# of common symbols to poll = %d\n", ncommon);
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fprintf(stderr, "\t# of random symbols to poll = %d\n", nrandom);
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fprintf(stderr, "\t# of seconds to test = %ld\n", nseconds);
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} /* end if */
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/* Set the random seed */
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if (0 == use_seed) {
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struct timeval t;
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HDgettimeofday(&t, NULL);
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random_seed = (unsigned)(t.tv_usec);
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} /* end if */
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srand(random_seed);
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/* ALWAYS emit the random seed for possible debugging */
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fprintf(stderr, "Using reader random seed: %u\n", random_seed);
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Generating symbol names\n");
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/* Generate dataset names */
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if (generate_symbols() < 0) {
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fprintf(stderr, "Error generating symbol names!\n");
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exit(EXIT_FAILURE);
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} /* end if */
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/* Create datatype for creating datasets */
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if ((symbol_tid = create_symbol_datatype()) < 0)
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return -1;
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/* Reading records from datasets */
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if (read_records(FILENAME, verbose, (unsigned long)nseconds, (unsigned)poll_time, (unsigned)ncommon,
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(unsigned)nrandom) < 0) {
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fprintf(stderr, "Error reading records from datasets!\n");
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exit(EXIT_FAILURE);
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} /* end if */
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Releasing symbols\n");
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/* Clean up the symbols */
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if (shutdown_symbols() < 0) {
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fprintf(stderr, "Error releasing symbols!\n");
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exit(EXIT_FAILURE);
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} /* end if */
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/* Emit informational message */
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if (verbose)
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fprintf(stderr, "Closing objects\n");
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/* Close objects created */
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if (H5Tclose(symbol_tid) < 0) {
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fprintf(stderr, "Error closing symbol datatype!\n");
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exit(EXIT_FAILURE);
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} /* end if */
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return 0;
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}
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