/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: swmr_writer.c
*
* Purpose: Writes data to a randomly selected subset of the datasets
* in the SWMR test file.
*
* This program is intended to run concurrently with the
* swmr_reader program.
*
*-------------------------------------------------------------------------
*/
/***********/
/* Headers */
/***********/
#include "h5test.h"
#include "swmr_common.h"
/********************/
/* Local Prototypes */
/********************/
static hid_t open_skeleton(const char *filename, bool verbose, FILE *verbose_file, unsigned random_seed,
bool old);
static int add_records(hid_t fid, bool verbose, FILE *verbose_file, unsigned long nrecords,
unsigned long flush_count);
static void usage(void);
/*-------------------------------------------------------------------------
* Function: open_skeleton
*
* Purpose: Opens the SWMR HDF5 file and datasets.
*
* Parameters: const char *filename
* The filename of the SWMR HDF5 file to open
*
* bool verbose
* Whether or not to emit verbose console messages
*
* FILE *verbose_file
* File handle for verbose output
*
* unsigned random_seed
* Random seed for the file (used for verbose logging)
*
* bool old
* Whether to write in "old" file format
*
* Return: Success: The file ID of the opened SWMR file
* The dataset IDs are stored in a global array
*
* Failure: -1
*
*-------------------------------------------------------------------------
*/
static hid_t
open_skeleton(const char *filename, bool verbose, FILE *verbose_file, unsigned random_seed, bool old)
{
hid_t fid; /* File ID for new HDF5 file */
hid_t fapl; /* File access property list */
unsigned u, v; /* Local index variable */
bool use_log_vfd = false; /* Use the log VFD (set this manually) */
assert(filename);
/* Create file access property list */
if ((fapl = h5_fileaccess()) < 0)
return -1;
if (!old) {
/* Set to use the latest library format */
if (H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
return -1;
}
if (use_log_vfd) {
char verbose_name[1024];
snprintf(verbose_name, sizeof(verbose_name), "swmr_writer.log.%u", random_seed);
H5Pset_fapl_log(fapl, verbose_name, H5FD_LOG_ALL, (size_t)(512 * 1024 * 1024));
} /* end if */
/* Open the file */
if ((fid = H5Fopen(filename, H5F_ACC_RDWR | H5F_ACC_SWMR_WRITE, fapl)) < 0)
return -1;
/* Close file access property list */
if (H5Pclose(fapl) < 0)
return -1;
/* Emit informational message */
if (verbose)
fprintf(verbose_file, "Opening datasets\n");
/* Open the datasets */
for (u = 0; u < NLEVELS; u++)
for (v = 0; v < symbol_count[u]; v++) {
if ((symbol_info[u][v].dsid = H5Dopen2(fid, symbol_info[u][v].name, H5P_DEFAULT)) < 0)
return -1;
symbol_info[u][v].nrecords = 0;
} /* end for */
return fid;
}
/*-------------------------------------------------------------------------
* Function: add_records
*
* Purpose: Writes a specified number of records to random datasets in
* the SWMR test file.
*
* Parameters: hid_t fid
* The file ID of the SWMR HDF5 file
*
* bool verbose
* Whether or not to emit verbose console messages
*
* FILE *verbose_file
* File handle for verbose output
*
* unsigned long nrecords
* # of records to write to the datasets
*
* unsigned long flush_count
* # of records to write before flushing the file to disk
*
* Return: Success: 0
* Failure: -1
*
*-------------------------------------------------------------------------
*/
static int
add_records(hid_t fid, bool verbose, FILE *verbose_file, unsigned long nrecords, unsigned long flush_count)
{
hid_t tid; /* Datatype ID for records */
hid_t mem_sid; /* Memory dataspace ID */
hsize_t start[2] = {0, 0}, count[2] = {1, 1}; /* Hyperslab selection values */
hsize_t dim[2] = {1, 0}; /* Dataspace dimensions */
symbol_t record; /* The record to add to the dataset */
unsigned long rec_to_flush; /* # of records left to write before flush */
unsigned long u, v; /* Local index variables */
assert(fid >= 0);
/* Reset the record */
/* (record's 'info' field might need to change for each record written, also) */
memset(&record, 0, sizeof(record));
/* Create a dataspace for the record to add */
if ((mem_sid = H5Screate(H5S_SCALAR)) < 0)
return -1;
/* Create datatype for appending records */
if ((tid = create_symbol_datatype()) < 0)
return -1;
/* Add records to random datasets, according to frequency distribution */
rec_to_flush = flush_count;
for (u = 0; u < nrecords; u++) {
symbol_info_t *symbol; /* Symbol to write record to */
hid_t file_sid; /* Dataset's space ID */
/* Get a random dataset, according to the symbol distribution */
symbol = choose_dataset();
/* Set the record's ID (equal to its position) */
record.rec_id = symbol->nrecords;
/* Get the coordinate to write */
start[1] = symbol->nrecords;
/* Cork the metadata cache, to prevent the object header from being
* flushed before the data has been written */
if (H5Odisable_mdc_flushes(symbol->dsid) < 0)
return -1;
/* Extend the dataset's dataspace to hold the new record */
symbol->nrecords++;
dim[1] = symbol->nrecords;
if (H5Dset_extent(symbol->dsid, dim) < 0)
return -1;
/* Get the dataset's dataspace */
if ((file_sid = H5Dget_space(symbol->dsid)) < 0)
return -1;
/* Choose the last record in the dataset */
if (H5Sselect_hyperslab(file_sid, H5S_SELECT_SET, start, NULL, count, NULL) < 0)
return -1;
/* Write record to the dataset */
if (H5Dwrite(symbol->dsid, tid, mem_sid, file_sid, H5P_DEFAULT, &record) < 0)
return -1;
/* Uncork the metadata cache */
if (H5Oenable_mdc_flushes(symbol->dsid) < 0)
return -1;
/* Close the dataset's dataspace */
if (H5Sclose(file_sid) < 0)
return -1;
/* Check for flushing file */
if (flush_count > 0) {
/* Decrement count of records to write before flushing */
rec_to_flush--;
/* Check for counter being reached */
if (0 == rec_to_flush) {
/* Flush contents of file */
if (H5Fflush(fid, H5F_SCOPE_GLOBAL) < 0)
return -1;
/* Reset flush counter */
rec_to_flush = flush_count;
} /* end if */
} /* end if */
} /* end for */
/* Close the memory dataspace */
if (H5Sclose(mem_sid) < 0)
return -1;
/* Close the datatype */
if (H5Tclose(tid) < 0)
return -1;
/* Emit informational message */
if (verbose)
fprintf(verbose_file, "Closing datasets\n");
/* Close the datasets */
for (u = 0; u < NLEVELS; u++)
for (v = 0; v < symbol_count[u]; v++)
if (H5Dclose(symbol_info[u][v].dsid) < 0)
return -1;
return 0;
}
static void
usage(void)
{
printf("\n");
printf("Usage error!\n");
printf("\n");
printf("Usage: swmr_writer [-q] [-o] [-f <# of records to write between flushing\n");
printf(" file contents>] [-r <random seed>] <# of records>\n");
printf("\n");
printf("<# of records to write between flushing file contents> should be 0\n");
printf("(for no flushing) or between 1 and (<# of records> - 1).\n");
printf("\n");
printf("<# of records> must be specified.\n");
printf("\n");
printf("Defaults to verbose (no '-q' given), latest format when opening file (no '-o' given),\n");
printf("flushing every 10000 records ('-f 10000'), and will generate a random seed (no -r given).\n");
printf("\n");
exit(EXIT_FAILURE);
}
int
main(int argc, char *argv[])
{
hid_t fid; /* File ID for file opened */
long nrecords = 0; /* # of records to append */
long flush_count = 10000; /* # of records to write between flushing file */
bool verbose = true; /* Whether to emit some informational messages */
FILE *verbose_file = NULL; /* File handle for verbose output */
bool old = false; /* Whether to use non-latest-format when opening file */
bool use_seed = false; /* Set to true if a seed was set on the command line */
unsigned random_seed = 0; /* Random # seed */
unsigned u; /* Local index variable */
int temp;
/* Parse command line options */
if (argc < 2)
usage();
if (argc > 1) {
u = 1;
while (u < (unsigned)argc) {
if (argv[u][0] == '-') {
switch (argv[u][1]) {
/* # of records to write between flushing file */
case 'f':
flush_count = atol(argv[u + 1]);
if (flush_count < 0)
usage();
u += 2;
break;
/* Be quiet */
case 'q':
verbose = false;
u++;
break;
/* Random # seed */
case 'r':
use_seed = true;
temp = atoi(argv[u + 1]);
random_seed = (unsigned)temp;
u += 2;
break;
/* Use non-latest-format when opening file */
case 'o':
old = true;
u++;
break;
default:
usage();
break;
} /* end switch */
} /* end if */
else {
/* Get the number of records to append */
nrecords = atol(argv[u]);
if (nrecords <= 0)
usage();
u++;
} /* end else */
} /* end while */
} /* end if */
if (nrecords <= 0)
usage();
if (flush_count >= nrecords)
usage();
/* Set the random seed */
if (!use_seed) {
struct timeval t;
HDgettimeofday(&t, NULL);
random_seed = (unsigned)(t.tv_usec);
} /* end if */
HDsrandom(random_seed);
/* Open output file */
if (verbose) {
char verbose_name[1024];
snprintf(verbose_name, sizeof(verbose_name), "swmr_writer.out.%u", random_seed);
if (NULL == (verbose_file = fopen(verbose_name, "w"))) {
fprintf(stderr, "Can't open verbose output file!\n");
exit(EXIT_FAILURE);
}
} /* end if */
/* Emit informational message */
if (verbose) {
fprintf(verbose_file, "Parameters:\n");
fprintf(verbose_file, "\t# of records between flushes = %ld\n", flush_count);
fprintf(verbose_file, "\t# of records to write = %ld\n", nrecords);
} /* end if */
/* ALWAYS emit the random seed for possible debugging */
fprintf(stdout, "Using writer random seed: %u\n", random_seed);
/* Emit informational message */
if (verbose)
fprintf(verbose_file, "Generating symbol names\n");
/* Generate dataset names */
if (generate_symbols() < 0)
return -1;
/* Emit informational message */
if (verbose)
fprintf(verbose_file, "Opening skeleton file: %s\n", FILENAME);
/* Open file skeleton */
if ((fid = open_skeleton(FILENAME, verbose, verbose_file, random_seed, old)) < 0) {
fprintf(stderr, "Error opening skeleton file!\n");
exit(EXIT_FAILURE);
} /* end if */
/* Send a message to indicate "H5Fopen" is complete--releasing the file lock */
h5_send_message(WRITER_MESSAGE, NULL, NULL);
/* Emit informational message */
if (verbose)
fprintf(verbose_file, "Adding records\n");
/* Append records to datasets */
if (add_records(fid, verbose, verbose_file, (unsigned long)nrecords, (unsigned long)flush_count) < 0) {
fprintf(stderr, "Error appending records to datasets!\n");
exit(EXIT_FAILURE);
} /* end if */
/* Emit informational message */
if (verbose)
fprintf(verbose_file, "Releasing symbols\n");
/* Clean up the symbols */
if (shutdown_symbols() < 0) {
fprintf(stderr, "Error releasing symbols!\n");
exit(EXIT_FAILURE);
} /* end if */
/* Emit informational message */
if (verbose)
fprintf(verbose_file, "Closing objects\n");
/* Close objects opened */
if (H5Fclose(fid) < 0) {
fprintf(stderr, "Error closing file!\n");
exit(EXIT_FAILURE);
} /* end if */
return 0;
}