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#include "swmr_common.h"
static hid_t
open_skeleton(const char *filename, unsigned verbose)
{
hid_t fid; /* File ID for new HDF5 file */
hid_t fapl; /* File access property list */
unsigned u, v; /* Local index variable */
/* Create file access property list */
if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
return(-1);
#ifdef QAK
/* Increase the initial size of the metadata cache */
{
H5AC_cache_config_t mdc_config;
mdc_config.version = H5AC__CURR_CACHE_CONFIG_VERSION;
H5Pget_mdc_config(fapl, &mdc_config);
printf("mdc_config.initial_size = %lu\n", (unsigned long)mdc_config.initial_size);
printf("mdc_config.epoch_length = %lu\n", (unsigned long)mdc_config.epoch_length);
mdc_config.set_initial_size = 1;
mdc_config.initial_size = 16 * 1024 * 1024;
/* mdc_config.epoch_length = 5000; */
H5Pset_mdc_config(fapl, &mdc_config);
}
#endif /* QAK */
#ifdef QAK
H5Pset_fapl_log(fapl, "append.log", H5FD_LOG_ALL, (size_t)(512 * 1024 * 1024));
#endif /* QAK */
/* 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)
printf("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);
}
static int
add_records(hid_t fid, unsigned verbose, unsigned long nrecords, unsigned long flush_count)
{
hid_t tid; /* Datatype ID for records */
hid_t mem_sid; /* Memory dataspace ID */
hsize_t start, count = 1; /* Hyperslab selection values */
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 */
/* 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 = symbol->nrecords;
/* Extend the dataset's dataspace to hold the new record */
symbol->nrecords++;
if(H5Dset_extent(symbol->dsid, &symbol->nrecords) < 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);
/* 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)
printf("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("Usage error!\n");
printf("Usage: swmr_writer [-q] [-f <# of records to write between flushing file contents>] <# of records>\n");
printf("<# of records to write between flushing file contents> should be 0 (for no flushing) or between 1 and (<# of records> - 1)\n");
printf("Defaults to verbose (no '-q' given) and flushing every 10000 records('-f 10000')\n");
exit(1);
}
int main(int argc, const char *argv[])
{
hid_t fid; /* File ID for file opened */
time_t curr_time; /* Current time, for seeding random number generator */
long nrecords = 0; /* # of records to append */
long flush_count = 10000; /* # of records to write between flushing file */
unsigned verbose = 1; /* Whether to emit some informational messages */
unsigned u; /* Local index variable */
/* 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 = 0;
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();
/* Emit informational message */
if(verbose) {
printf("Parameters:\n");
printf("\t# of records between flushes = %ld\n", flush_count);
printf("\t# of records to write = %ld\n", nrecords);
} /* end if */
/* Create randomized set of numbers */
curr_time = time(NULL);
srandom((unsigned)curr_time);
/* Emit informational message */
if(verbose)
printf("Generating symbol names\n");
/* Generate dataset names */
if(generate_symbols() < 0)
return(-1);
/* Emit informational message */
if(verbose)
printf("Opening skeleton file: %s\n", FILENAME);
/* Open file skeleton */
if((fid = open_skeleton(FILENAME, verbose)) < 0) {
printf("Error opening skeleton file!\n");
exit(1);
} /* end if */
/* Emit informational message */
if(verbose)
printf("Adding records\n");
/* Append records to datasets */
if(add_records(fid, verbose, (unsigned long)nrecords, (unsigned long)flush_count) < 0) {
printf("Error appending records to datasets!\n");
exit(1);
} /* end if */
/* Emit informational message */
if(verbose)
printf("Releasing symbols\n");
/* Clean up the symbols */
if(shutdown_symbols() < 0) {
printf("Error releasing symbols!\n");
exit(1);
} /* end if */
/* Emit informational message */
if(verbose)
printf("Closing objects\n");
/* Close objects opened */
if(H5Fclose(fid) < 0) {
printf("Error closing file!\n");
exit(1);
} /* end if */
return(0);
}
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