/*-------------------------------------------------------------------------
* Function: main
*
* Purpose: h5watch
*
* Return: Success: 0
* Failure: 1
*
* Programmer: Vailin Choi; August 2010
*
*-------------------------------------------------------------------------
*/
int
main(int argc, const char *argv[])
{
char drivername[50];
char *fname = NULL;
char *dname = NULL;
void *edata;
H5E_auto2_t func;
char *x;
hid_t fid = -1;
hid_t fapl = -1;
/* Set up tool name and exit status */
h5tools_setprogname(PROGRAMNAME);
h5tools_setstatus(EXIT_SUCCESS);
/* Disable error reporting */
H5Eget_auto2(H5E_DEFAULT, &func, &edata);
H5Eset_auto2(H5E_DEFAULT, NULL, NULL);
/* Initialize h5tools lib */
h5tools_init();
/* parse command line options */
parse_command_line(argc, argv);
if(argc <= opt_ind) {
error_msg("missing dataset name\n");
usage(h5tools_getprogname());
leave(EXIT_FAILURE);
}
/* Mostly copied from tools/h5ls coding & modified accordingly */
/*
* [OBJECT] is specified as
* [<filename>/<path_to_dataset>/<dsetname>]
*
* Example: ../dir1/foo/bar/dset
* \_________/\______/
* file obj
*
* The dichotomy is determined by calling H5Fopen() repeatedly until it
* succeeds. The first call uses the entire name and each subsequent call
* chops off the last component. If we reach the beginning of the name
* then there must have been something wrong with the file (perhaps it
* doesn't exist).
*/
if((fname = HDstrdup(argv[opt_ind])) == NULL) {
error_msg("memory allocation failed (file %s:line %d)\n",
__FILE__, __LINE__);
h5tools_setstatus(EXIT_FAILURE);
}
/* Create a copy of file access property list */
if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
return -1;
/* Set to use the latest library format */
if(H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
return -1;
do {
while(fname && *fname) {
fid = h5tools_fopen(fname, H5F_ACC_RDONLY|H5F_ACC_SWMR_READ, fapl, NULL, drivername, sizeof drivername);
if(fid >= 0) {
HDfprintf(stdout, "Opened \"%s\" with %s driver.\n", fname, drivername);
break; /*success*/
} /* end if */
/* Shorten the file name; lengthen the object name */
x = dname;
dname = HDstrrchr(fname, '/');
if(x)
*x = '/';
if(!dname)
break;
*dname = '\0';
} /* end while */
/* Try opening the file again if somehow unstable */
} while(g_retry-- > 0 && fid == FAIL);
if(fid < 0) {
error_msg("unable to open file \"%s\"\n", fname);
if(fname) HDfree(fname);
if(fapl >= 0) H5Pclose(fapl);
leave(EXIT_FAILURE);
}
if(!dname) {
error_msg("no dataset specified\n");
h5tools_setstatus(EXIT_FAILURE);
} else {
*dname = '/';
x = dname;
if((dname = HDstrdup(dname)) == NULL) {
error_msg("memory allocation failed (file %s:line %d)\n",
__FILE__, __LINE__);
h5tools_setstatus(EXIT_FAILURE);
} else {
*x = '\0';
/* Validate dataset */
if(check_dataset(fid, dname) < 0)
h5tools_setstatus(EXIT_FAILURE);
/* Validate input "fields" */
else if(g_list_of_fields && *g_list_of_fields)
if(process_cmpd_fields(fid, dname) < 0)
h5tools_setstatus(EXIT_FAILURE);
}
}
/* If everything is fine, start monitoring the datset */
if(h5tools_getstatus() != EXIT_FAILURE)
if(monitor_dataset(fid, dname) < 0)
h5tools_setstatus(EXIT_FAILURE);
/* Free spaces */
if(fname) HDfree(fname);
if(dname) HDfree(dname);
if(g_list_of_fields) HDfree(g_list_of_fields);
if(g_listv) {
H5LD_clean_vector(g_listv);
HDfree(g_listv);
}
if(g_dup_fields) HDfree(g_dup_fields);
/* Close the file access property list */
if(fapl >= 0 && H5Pclose(fapl) < 0) {
error_msg("unable to close file access property list\n");
h5tools_setstatus(EXIT_FAILURE);
}
/* Close the file */
if(H5Fclose(fid) < 0) {
error_msg("unable to close file\n");
h5tools_setstatus(EXIT_FAILURE);
}
H5Eset_auto2(H5E_DEFAULT, func, edata);
/* exit */
leave(h5tools_getstatus());
} /* main() */
/*-------------------------------------------------------------------------
* Function: read_records
*
* Purpose: For a given dataset, checks to make sure that the stated
* and actual sizes are the same. If they are not, then
* we have an inconsistent dataset due to a SWMR error.
*
* Parameters: const char *filename
* The SWMR test file's name.
*
* unsigned verbose
* Whether verbose console output is desired.
*
* unsigned long nrecords
* The total number of records to read.
*
* unsigned poll_time
* The amount of time to sleep (s).
*
* unsigned reopen_count
*
*
* Return: Success: 0
* Failure: -1
*
*-------------------------------------------------------------------------
*/
static int
read_records(const char *filename, unsigned verbose, unsigned long nrecords,
unsigned poll_time, unsigned reopen_count)
{
hid_t fid; /* File ID */
hid_t aid; /* Attribute ID */
time_t start_time; /* Starting time */
hid_t mem_sid; /* Memory dataspace ID */
symbol_t record; /* The record to add to the dataset */
unsigned seed; /* Seed for random number generator */
unsigned iter_to_reopen = reopen_count; /* # of iterations until reopen */
unsigned long u; /* Local index variable */
hid_t fapl;
HDassert(filename);
HDassert(poll_time != 0);
/* Create file access property list */
if((fapl = h5_fileaccess()) < 0)
return -1;
H5Pset_fclose_degree(fapl, H5F_CLOSE_SEMI);
/* Emit informational message */
if(verbose)
HDfprintf(stderr, "Opening file: %s\n", filename);
/* Open the file */
if((fid = H5Fopen(filename, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ, fapl)) < 0)
return -1;
/* Seed the random number generator with the attribute in the file */
if((aid = H5Aopen(fid, "seed", H5P_DEFAULT)) < 0)
return -1;
if(H5Aread(aid, H5T_NATIVE_UINT, &seed) < 0)
return -1;
if(H5Aclose(aid) < 0)
return -1;
HDsrandom(seed);
/* 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 read */
if((mem_sid = H5Screate(H5S_SCALAR)) < 0)
return -1;
/* Emit informational message */
if(verbose)
HDfprintf(stderr, "Reading records\n");
/* Get the starting time */
start_time = HDtime(NULL);
/* Read records */
for(u = 0; u < nrecords; u++) {
symbol_info_t *symbol = NULL; /* Symbol (dataset) */
htri_t attr_exists; /* Whether the sequence number attribute exists */
unsigned long file_u; /* Attribute sequence number (writer's "u") */
/* Get a random dataset, according to the symbol distribution */
symbol = choose_dataset();
/* Fill in "nrecords" field. Note that this depends on the writer
* using the same algorithm and "nrecords" */
symbol->nrecords = nrecords / 5;
/* Wait until we can read the dataset */
do {
/* Check if sequence attribute exists */
if((attr_exists = H5Aexists_by_name(fid, symbol->name, "seq", H5P_DEFAULT)) < 0)
return -1;
if(attr_exists) {
/* Read sequence number attribute */
if((aid = H5Aopen_by_name(fid, symbol->name, "seq", H5P_DEFAULT, H5P_DEFAULT)) < 0)
return -1;
if(H5Aread(aid, H5T_NATIVE_ULONG, &file_u) < 0)
return -1;
if(H5Aclose(aid) < 0)
return -1;
/* Check if sequence number is at least u - if so, this should
* guarantee that this record has been written */
if(file_u >= u)
break;
} /* end if */
/* Check for timeout */
if(HDtime(NULL) >= (time_t)(start_time + (time_t)TIMEOUT)) {
HDfprintf(stderr, "Reader timed out\n");
return -1;
} /* end if */
/* Pause */
HDsleep(poll_time);
/* Retrieve and print the collection of metadata read retries */
if(print_metadata_retries_info(fid) < 0)
HDfprintf(stderr, "Warning: could not obtain metadata retries info\n");
/* Reopen the file */
if(H5Fclose(fid) < 0)
return -1;
if((fid = H5Fopen(filename, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ, fapl)) < 0)
return -1;
iter_to_reopen = reopen_count;
} while(1);
/* Emit informational message */
if(verbose)
HDfprintf(stderr, "Checking dataset %lu\n", u);
/* Check dataset */
if(check_dataset(fid, verbose, symbol, &record, mem_sid) < 0)
return -1;
HDmemset(&record, 0, sizeof(record));
/* Check for reopen */
iter_to_reopen--;
if(iter_to_reopen == 0) {
/* Emit informational message */
if(verbose)
HDfprintf(stderr, "Reopening file: %s\n", filename);
/* Retrieve and print the collection of metadata read retries */
if(print_metadata_retries_info(fid) < 0)
HDfprintf(stderr, "Warning: could not obtain metadata retries info\n");
/* Reopen the file */
if(H5Fclose(fid) < 0)
return -1;
if((fid = H5Fopen(filename, H5F_ACC_RDONLY | H5F_ACC_SWMR_READ, fapl)) < 0)
return -1;
iter_to_reopen = reopen_count;
} /* end if */
} /* end while */
/* Retrieve and print the collection of metadata read retries */
if(print_metadata_retries_info(fid) < 0)
HDfprintf(stderr, "Warning: could not obtain metadata retries info\n");
/* Close file */
if(H5Fclose(fid) < 0)
return -1;
/* Close the memory dataspace */
if(H5Sclose(mem_sid) < 0)
return -1;
return 0;
} /* end read_records() */
