diff options
Diffstat (limited to 'test/swmr_sparse_reader.c')
| -rw-r--r-- | test/swmr_sparse_reader.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/test/swmr_sparse_reader.c b/test/swmr_sparse_reader.c new file mode 100644 index 0000000..53bd877 --- /dev/null +++ b/test/swmr_sparse_reader.c @@ -0,0 +1,319 @@ +#include "swmr_common.h"
+#include <unistd.h>
+
+#define TIMEOUT 300
+
+static hid_t symbol_tid = (-1);
+
+static int
+check_dataset(hid_t fid, unsigned verbose, const symbol_info_t *symbol, symbol_t *record,
+ hid_t rec_sid)
+{
+ hid_t dsid; /* Dataset ID */
+ hid_t file_sid; /* Dataset's space ID */
+ hsize_t start, count = 1; /* Hyperslab selection values */
+
+ /* Open dataset for symbol */
+ if((dsid = H5Dopen2(fid, symbol->name, H5P_DEFAULT)) < 0)
+ return(-1);
+
+ /* Get the dataset's dataspace */
+ if((file_sid = H5Dget_space(dsid)) < 0)
+ return(-1);
+
+ /* Choose the random record in the dataset (will be the same as chosen by
+ * the writer) */
+ start = (hsize_t)random() % symbol->nrecords;;
+ if(H5Sselect_hyperslab(file_sid, H5S_SELECT_SET, &start, NULL, &count, NULL) < 0)
+ return(-1);
+
+ /* Emit informational message */
+ if(verbose)
+ printf("Symbol = '%s', location = %lld\n", symbol->name, (long long)start);
+
+ /* Read record from dataset */
+#ifdef OHDR_DEPS_WORK
+ /* Even with the sequence number attribute and all the flush dependencues,
+ * it is still currently possible for the attribute to be updated before the
+ * index and/or raw data, because the attribute may reside in an object
+ * header chunk afer the first. Until this is fixed, just allow the read
+ * value to be 0. */
+ record->rec_id = (uint64_t)ULLONG_MAX;
+#else /* FILLVAL_WORKS */
+ record->rec_id = (uint64_t)0;
+#endif /* FILLVAL_WORKS */
+ if(H5Dread(dsid, symbol_tid, rec_sid, file_sid, H5P_DEFAULT, record) < 0)
+ return(-1);
+
+ /* Verify record value */
+ if(record->rec_id != start
+#ifndef OHDR_DEPS_WORK
+ && record->rec_id != (uint64_t)0
+#endif
+ ) {
+ printf("Incorrect record value!\n");
+ printf("Symbol = '%s', location = %lld, record->rec_id = %llu\n", symbol->name, (long long)start, (unsigned long long)record->rec_id);
+ return(-1);
+ } /* end if */
+
+ /* Close the dataset's dataspace */
+ if(H5Sclose(file_sid) < 0)
+ return(-1);
+
+ /* Close dataset for symbol */
+ if(H5Dclose(dsid) < 0)
+ return(-1);
+
+ return(0);
+} /* end check_dataset() */
+
+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;
+fapl = H5Pcreate(H5P_FILE_ACCESS);
+H5Pset_fclose_degree(fapl, H5F_CLOSE_SEMI);
+ /* Emit informational message */
+ if(verbose)
+ printf("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);
+ srandom(seed);
+
+ /* 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 read */
+ if((mem_sid = H5Screate(H5S_SCALAR)) < 0)
+ return(-1);
+
+ /* Emit informational message */
+ if(verbose)
+ printf("Reading records\n");
+
+ /* Get the starting time */
+ start_time = time(NULL);
+
+ /* Read records */
+ for(u = 0; u < nrecords; u++) {
+ symbol_info_t *symbol = NULL; /* Symbol (dataset) */
+ int can_read; /* Boolean: whether we can read the 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 */
+ can_read = 0;
+ 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(time(NULL) >= (time_t)(start_time + (time_t)TIMEOUT)) {
+ printf("Reader timed out\n");
+ return(-1);
+ } /* end if */
+
+ /* Pause */
+ sleep(poll_time);
+
+ /* 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)
+ printf("Checking dataset %lu\n", u);
+
+ /* Check dataset */
+ if(check_dataset(fid, verbose, symbol, &record, mem_sid) < 0)
+ return(-1);
+
+ /* Check for reopen */
+ iter_to_reopen--;
+ if(iter_to_reopen == 0) {
+ /* Emit informational message */
+ if(verbose)
+ printf("Reopening file: %s\n", filename);
+
+ /* 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 */
+
+ /* Close file */
+ if(H5Fclose(fid) < 0)
+ return(-1);
+
+ /* Close the memory dataspace */
+ if(H5Sclose(mem_sid) < 0)
+ return(-1);
+
+ return(0);
+} /* end read_records() */
+
+static void
+usage(void)
+{
+ printf("Usage error!\n");
+ printf("Usage: swmr_sparse_reader [-q] [-s <# of seconds to wait for writer>] [-r <# of reads between reopens>] <# of records>\n");
+ printf("Defaults to verbose (no '-q' given), 1 second wait ('-s 1') and 1 read between reopens ('-r 1')\n");
+ printf("Note that the # of records *must* be the same as that supplied to swmr_sparse_writer\n");
+ exit(1);
+} /* end usage() */
+
+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 'r':
+ reopen_count = atoi(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 = atoi(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 = atol(argv[u]);
+ if(nrecords <= 0)
+ usage();
+
+ u++;
+ } /* end else */
+ } /* end while */
+ } /* end if */
+
+ /* Emit informational message */
+ if(verbose) {
+ printf("Parameters:\n");
+ printf("\t# of seconds between polling = %d\n", poll_time);
+ printf("\t# of reads between reopens = %d\n", reopen_count);
+ printf("\t# of records to read = %ld\n", nrecords);
+ } /* end if */
+
+ /* Emit informational message */
+ if(verbose)
+ printf("Generating symbol names\n");
+
+ /* Generate dataset names */
+ if(generate_symbols() < 0) {
+ printf("Error generating symbol names!\n");
+ exit(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) {
+ printf("Error reading records from 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 created */
+ if(H5Tclose(symbol_tid) < 0) {
+ printf("Error closing symbol datatype!\n");
+ exit(1);
+ } /* end if */
+
+ return(0);
+}
+
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