/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by The HDF Group. * * All rights reserved. * * * * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * * the COPYING file, which can be found at the root of the source code * * distribution tree, or in https://www.hdfgroup.org/licenses. * * If you do not have access to either file, you may request a copy from * * help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /*------------------------------------------------------------------------- * * Created: swmr_addrem_writer.c * * Purpose: Adds and removes data to a randomly selected subset of the * datasets in the SWMR test file. * * This program is intended to run concurrently with the * swmr_reader program. It is also run AFTER a sequential * (not concurrent!) invoking of swmr_writer so the writer * can dump a bunch of data into the datasets. Otherwise, * there wouldn't be much to shrink :) * *------------------------------------------------------------------------- */ /***********/ /* Headers */ /***********/ #include "h5test.h" #include "swmr_common.h" /****************/ /* Local Macros */ /****************/ /* The maximum # of records to add/remove from the dataset in one step */ #define MAX_SIZE_CHANGE 10 /********************/ /* Local Prototypes */ /********************/ static hid_t open_skeleton(const char *filename, unsigned verbose); static int addrem_records(hid_t fid, unsigned verbose, unsigned long nops, unsigned long flush_count); static void usage(void); /*------------------------------------------------------------------------- * Function: open_skeleton * * Purpose: Opens the SWMR HDF5 file and datasets. * * Parameters: const char *filename * The filename of the SWMR HDF5 file to open * * unsigned verbose * Whether or not to emit verbose console messages * * Return: Success: The file ID of the opened SWMR file * The dataset IDs are stored in a global array * * Failure: -1 * *------------------------------------------------------------------------- */ 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 */ hid_t sid; /* Dataspace ID */ hsize_t dim[2]; /* Dataspace dimension */ unsigned u, v; /* Local index variable */ assert(filename); /* Create file access property list */ if ((fapl = h5_fileaccess()) < 0) return -1; /* Set to use the latest library format */ if (H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0) return -1; /* 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) fprintf(stderr, "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; if ((sid = H5Dget_space(symbol_info[u][v].dsid)) < 0) return -1; if (2 != H5Sget_simple_extent_ndims(sid)) return -1; if (H5Sget_simple_extent_dims(sid, dim, NULL) < 0) return -1; symbol_info[u][v].nrecords = dim[1]; } /* end for */ return fid; } /*------------------------------------------------------------------------- * 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 */ 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; /* 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)HDrandom() % (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 (H5Odisable_mdc_flushes(symbol->dsid) < 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 (H5Oenable_mdc_flushes(symbol->dsid) < 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; } static void usage(void) { printf("\n"); printf("Usage error!\n"); printf("\n"); printf("Usage: swmr_addrem_writer [-q] [-f <# of operations between flushing\n"); printf(" file contents>] [-r ] <# of operations>\n"); printf("\n"); printf("<# of operations between flushing file contents> should be 0 (for\n"); printf("no flushing) or between 1 and (<# of operations> - 1).\n"); printf("\n"); printf("<# of operations> must be specified.\n"); printf("\n"); printf("Defaults to verbose (no '-q' given), flushing every 1000 operations\n"); printf("('-f 1000'), and will generate a random seed (no -r given).\n"); printf("\n"); exit(EXIT_FAILURE); } int main(int argc, char *argv[]) { hid_t fid; /* File ID for file opened */ long nops = 0; /* # of times to grow or shrink the dataset */ long flush_count = 1000; /* # of records to write between flushing file */ unsigned verbose = 1; /* Whether to emit some informational messages */ unsigned use_seed = 0; /* Set to 1 if a seed was set on the command line */ unsigned random_seed = 0; /* Random # seed */ unsigned u; /* Local index variable */ int temp; /* 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; /* Random # seed */ case 'r': use_seed = 1; temp = atoi(argv[u + 1]); if (temp < 0) usage(); else random_seed = (unsigned)temp; u += 2; break; default: usage(); break; } /* end switch */ } /* end if */ else { /* Get the number of records to append */ nops = atol(argv[u]); if (nops <= 0) usage(); u++; } /* end else */ } /* end while */ } /* end if */ if (nops <= 0) usage(); if (flush_count >= nops) usage(); /* Emit informational message */ if (verbose) { fprintf(stderr, "Parameters:\n"); fprintf(stderr, "\t# of operations between flushes = %ld\n", flush_count); fprintf(stderr, "\t# of operations = %ld\n", nops); } /* end if */ /* Set the random seed */ if (0 == use_seed) { struct timeval t; HDgettimeofday(&t, NULL); random_seed = (unsigned)(t.tv_usec); } /* end if */ HDsrandom(random_seed); /* ALWAYS emit the random seed for possible debugging */ fprintf(stderr, "Using writer random seed: %u\n", random_seed); /* Emit informational message */ if (verbose) fprintf(stderr, "Generating symbol names\n"); /* Generate dataset names */ if (generate_symbols() < 0) return -1; /* Emit informational message */ if (verbose) fprintf(stderr, "Opening skeleton file: %s\n", FILENAME); /* Open file skeleton */ if ((fid = open_skeleton(FILENAME, verbose)) < 0) { fprintf(stderr, "Error opening skeleton file!\n"); exit(EXIT_FAILURE); } /* end if */ /* Send a message to indicate "H5Fopen" is complete--releasing the file lock */ h5_send_message(WRITER_MESSAGE, NULL, NULL); /* Emit informational message */ if (verbose) fprintf(stderr, "Adding and removing records\n"); /* Grow and shrink datasets */ if (addrem_records(fid, verbose, (unsigned long)nops, (unsigned long)flush_count) < 0) { fprintf(stderr, "Error adding and removing records from datasets!\n"); exit(EXIT_FAILURE); } /* end if */ /* Emit informational message */ if (verbose) fprintf(stderr, "Releasing symbols\n"); /* Clean up the symbols */ if (shutdown_symbols() < 0) { fprintf(stderr, "Error releasing symbols!\n"); exit(EXIT_FAILURE); } /* end if */ /* Emit informational message */ if (verbose) fprintf(stderr, "Closing objects\n"); /* Close objects opened */ if (H5Fclose(fid) < 0) { fprintf(stderr, "Error closing file!\n"); exit(EXIT_FAILURE); } /* end if */ return 0; }