/*------------------------------------------------------------------------- * 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() */
/*------------------------------------------------------------------------- * 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; }