int main(int argc, const char *argv[])
{
long nrecords = 0; /* # of records to read */
int poll_time = 1; /* # of seconds to sleep when waiting for writer */
int reopen_count = 1; /* # of reads between reopens */
unsigned verbose = 1; /* Whether to emit some informational messages */
unsigned u; /* Local index variables */
/* 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 reads between reopens */
case 'n':
reopen_count = HDatoi(argv[u + 1]);
if(reopen_count < 0)
usage();
u += 2;
break;
/* Be quiet */
case 'q':
verbose = 0;
u++;
break;
/* # of seconds between polling */
case 's':
poll_time = HDatoi(argv[u + 1]);
if(poll_time < 0)
usage();
u += 2;
break;
default:
usage();
break;
} /* end switch */
} /* end if */
else {
/* Get the number of records to read */
nrecords = HDatol(argv[u]);
if(nrecords <= 0)
usage();
u++;
} /* end else */
} /* end while */
} /* end if */
/* Emit informational message */
if(verbose) {
HDfprintf(stderr, "Parameters:\n");
HDfprintf(stderr, "\t# of seconds between polling = %d\n", poll_time);
HDfprintf(stderr, "\t# of reads between reopens = %d\n", reopen_count);
HDfprintf(stderr, "\t# of records to read = %ld\n", nrecords);
} /* end if */
/* Emit informational message */
if(verbose)
HDfprintf(stderr, "Generating symbol names\n");
/* Generate dataset names */
if(generate_symbols() < 0) {
HDfprintf(stderr, "Error generating symbol names!\n");
HDexit(1);
} /* end if */
/* Create datatype for creating datasets */
if((symbol_tid = create_symbol_datatype()) < 0)
return -1;
/* Reading records from datasets */
if(read_records(FILENAME, verbose, (unsigned long) nrecords, (unsigned)poll_time, (unsigned)reopen_count) < 0) {
HDfprintf(stderr, "Error reading records from datasets!\n");
HDexit(1);
} /* end if */
/* Emit informational message */
if(verbose)
HDfprintf(stderr, "Releasing symbols\n");
/* Clean up the symbols */
if(shutdown_symbols() < 0) {
HDfprintf(stderr, "Error releasing symbols!\n");
HDexit(1);
} /* end if */
/* Emit informational message */
if(verbose)
HDfprintf(stderr, "Closing objects\n");
/* Close objects created */
if(H5Tclose(symbol_tid) < 0) {
HDfprintf(stderr, "Error closing symbol datatype!\n");
HDexit(1);
} /* end if */
return 0;
}
/*-------------------------------------------------------------------------
* Function: addrem_records
*
* Purpose: Adds/removes a specified number of records to random datasets
* to the SWMR test file.
*
* Parameters: hid_t fid
* The file ID of the SWMR HDF5 file
*
* unsigned verbose
* Whether or not to emit verbose console messages
*
* unsigned long nops
* # of records to read/write in the datasets
*
* unsigned long flush_count
* # of records to write before flushing the file to disk
*
* Return: Success: 0
* Failure: -1
*
*-------------------------------------------------------------------------
*/
static int
addrem_records(hid_t fid, unsigned verbose, unsigned long nops, 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 buf[MAX_SIZE_CHANGE]; /* Write buffer */
H5AC_cache_config_t mdc_config_orig; /* Original metadata cache configuration */
H5AC_cache_config_t mdc_config_cork; /* Corked metadata cache configuration */
unsigned long op_to_flush; /* # of operations before flush */
unsigned long u, v; /* Local index variables */
assert(fid > 0);
/* Reset the buffer */
memset(&buf, 0, sizeof(buf));
/* Create a dataspace for the record to add */
if((mem_sid = H5Screate_simple(2, count, NULL)) < 0)
return -1;
/* Create datatype for appending records */
if((tid = create_symbol_datatype()) < 0)
return -1;
/* Get the current metadata cache configuration, and set up the corked
* configuration */
mdc_config_orig.version = H5AC__CURR_CACHE_CONFIG_VERSION;
if(H5Fget_mdc_config(fid, &mdc_config_orig) < 0)
return -1;
memcpy(&mdc_config_cork, &mdc_config_orig, sizeof(mdc_config_cork));
mdc_config_cork.evictions_enabled = FALSE;
mdc_config_cork.incr_mode = H5C_incr__off;
mdc_config_cork.flash_incr_mode = H5C_flash_incr__off;
mdc_config_cork.decr_mode = H5C_decr__off;
/* Add and remove records to random datasets, according to frequency
* distribution */
op_to_flush = flush_count;
for(u=0; u<nops; 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();
/* Decide whether to shrink or expand, and by how much */
count[1] = (hsize_t)random() % (MAX_SIZE_CHANGE * 2) + 1;
if(count[1] > MAX_SIZE_CHANGE) {
/* Add records */
count[1] -= MAX_SIZE_CHANGE;
/* Set the buffer's IDs (equal to its position) */
for(v=0; v<count[1]; v++)
buf[v].rec_id = (uint64_t)symbol->nrecords + (uint64_t)v;
/* Set the memory space to the correct size */
if(H5Sset_extent_simple(mem_sid, 2, count, NULL) < 0)
return -1;
/* Get the coordinates 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(H5Fset_mdc_config(fid, &mdc_config_cork) < 0)
return(-1);*/
/* Extend the dataset's dataspace to hold the new record */
symbol->nrecords+= count[1];
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, &buf) < 0)
return -1;
/* Uncork the metadata cache */
/*if(H5Fset_mdc_config(fid, &mdc_config_orig) < 0)
return -1;*/
/* Close the dataset's dataspace */
if(H5Sclose(file_sid) < 0)
return -1;
} /* end if */
else {
/* Shrink the dataset's dataspace */
if(count[1] > symbol->nrecords)
symbol->nrecords = 0;
else
symbol->nrecords -= count[1];
dim[1] = symbol->nrecords;
if(H5Dset_extent(symbol->dsid, dim) < 0)
return -1;
} /* end else */
/* Check for flushing file */
if(flush_count > 0) {
/* Decrement count of records to write before flushing */
op_to_flush--;
/* Check for counter being reached */
if(0 == op_to_flush) {
/* Flush contents of file */
if(H5Fflush(fid, H5F_SCOPE_GLOBAL) < 0)
return -1;
/* Reset flush counter */
op_to_flush = flush_count;
} /* end if */
} /* end if */
} /* end for */
/* Emit informational message */
if(verbose)
fprintf(stderr, "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;
}
/*-------------------------------------------------------------------------
* 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
*
* unsigned verbose
* Whether or not to emit verbose console messages
*
* 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, 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[2] = {0, 0}; /* Hyperslab selection values */
hsize_t count[2] = {1, 1}; /* Hyperslab selection values */
symbol_t record; /* The record to add to the dataset */
H5AC_cache_config_t mdc_config_orig; /* Original metadata cache configuration */
H5AC_cache_config_t mdc_config_cork; /* Corked metadata cache configuration */
unsigned long rec_to_flush; /* # of records left to write before flush */
volatile int dummy; /* Dummy varialbe for busy sleep */
hsize_t dim[2] = {1,0}; /* Dataspace dimensions */
unsigned long u, v; /* Local index variables */
HDassert(fid >= 0);
/* Reset the record */
/* (record's 'info' field might need to change for each record written, also) */
HDmemset(&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;
/* Get the current metadata cache configuration, and set up the corked
* configuration */
mdc_config_orig.version = H5AC__CURR_CACHE_CONFIG_VERSION;
if(H5Fget_mdc_config(fid, &mdc_config_orig) < 0)
return -1;
HDmemcpy(&mdc_config_cork, &mdc_config_orig, sizeof(mdc_config_cork));
mdc_config_cork.evictions_enabled = FALSE;
mdc_config_cork.incr_mode = H5C_incr__off;
mdc_config_cork.flash_incr_mode = H5C_flash_incr__off;
mdc_config_cork.decr_mode = H5C_decr__off;
/* 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 */
hid_t aid; /* Attribute ID */
/* Get a random dataset, according to the symbol distribution */
symbol = choose_dataset();
/* Cork the metadata cache, to prevent the object header from being
* flushed before the data has been written */
/*if(H5Fset_mdc_config(fid, &mdc_config_cork) < 0)
return(-1);*/
/* If this is the first time the dataset has been opened, extend it and
* add the sequence attribute */
if(symbol->nrecords == 0) {
symbol->nrecords = nrecords / 5;
dim[1] = symbol->nrecords;
if(H5Dset_extent(symbol->dsid, dim) < 0)
return -1;
if((file_sid = H5Screate(H5S_SCALAR)) < 0)
return -1;
if((aid = H5Acreate2(symbol->dsid, "seq", H5T_NATIVE_ULONG, file_sid, H5P_DEFAULT, H5P_DEFAULT)) < 0)
return -1;
if(H5Sclose(file_sid) < 0)
return -1;
} /* end if */
else if((aid = H5Aopen(symbol->dsid, "seq", H5P_DEFAULT)) < 0)
return -1;
/* Get the coordinate to write */
start[1] = (hsize_t)HDrandom() % symbol->nrecords;
/* Set the record's ID (equal to its position) */
record.rec_id = start[1];
/* Get the dataset's dataspace */
if((file_sid = H5Dget_space(symbol->dsid)) < 0)
return -1;
/* Choose a random 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;
/* Write the sequence number attribute. Since we synchronize the random
* number seed, the readers will always generate the same sequence of
* randomly chosen datasets and offsets. Therefore, and because of the
* flush dependencies on the object header, the reader will be
* guaranteed to see the written data if the sequence attribute is >=u.
*/
if(H5Awrite(aid, H5T_NATIVE_ULONG, &u) < 0)
return -1;
/* Close the attribute */
if(H5Aclose(aid) < 0)
return -1;
/* Uncork the metadata cache */
/*if(H5Fset_mdc_config(fid, &mdc_config_orig) < 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 */
#ifdef OUT
/* Busy wait, to let readers catch up */
/* If this is removed, also remove the BUSY_WAIT symbol
* at the top of the file.
*/
dummy = 0;
for(v=0; v<BUSY_WAIT; v++)
dummy++;
if((unsigned long)dummy != v)
return -1;
#endif /* OUT */
} /* 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(stderr, "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;
}
