/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by Akadio, Inc. * * 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: vfd_swmr_remove_writer.c * (copied and modified from swmr_remove_writer.c) * * Purpose: Removes data from a randomly selected subset of the datasets * in the VFD SWMR test file. * * This program is intended to run concurrently with the * vfd_swmr_remove_reader program. It is also run AFTER a sequential * (not concurrent!) invoking of vfd_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 "vfd_swmr_common.h" #include "swmr_common.h" #ifndef H5_HAVE_WIN32_API /****************/ /* Local Macros */ /****************/ /* The maximum number of records to remove in one step */ #define MAX_REMOVE_SIZE 10 /********************/ /* Local Prototypes */ /********************/ static hid_t open_skeleton(const char *filename, unsigned verbose, unsigned old); static int remove_records(hid_t fid, unsigned verbose, unsigned long nshrinks, 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, unsigned old H5_ATTR_UNUSED) { hid_t fid = -1; /* File ID for new HDF5 file */ hid_t fapl = -1; /* File access property list */ hid_t sid = -1; /* Dataspace ID */ hsize_t dim[2]; /* Dataspace dimensions */ unsigned u, v; /* Local index variable */ H5F_vfd_swmr_config_t *config = NULL; /* Configuration for VFD SWMR */ HDassert(filename); /* Allocate memory for the configuration structure */ if ((config = (H5F_vfd_swmr_config_t *)HDcalloc(1, sizeof(H5F_vfd_swmr_config_t))) == NULL) goto error; /* config, tick_len, max_lag, writer, maintain_metadata_file, generate_updater_files, * flush_raw_data, md_pages_reserved, md_file_path, updater_file_path */ init_vfd_swmr_config(config, 4, 5, TRUE, TRUE, FALSE, TRUE, 128, "rw-shadow", NULL); /* use_latest_format, use_vfd_swmr, only_meta_page, page_buf_size, config */ if ((fapl = vfd_swmr_create_fapl(TRUE, TRUE, FALSE, 4096, config)) < 0) goto error; /* Open the file */ if ((fid = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0) goto error; /* Close file access property list */ if (H5Pclose(fapl) < 0) goto error; if (config) HDfree(config); /* Emit informational message */ if (verbose) HDfprintf(stderr, "WRITER: 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) goto error; if ((sid = H5Dget_space(symbol_info[u][v].dsid)) < 0) goto error; if (2 != H5Sget_simple_extent_ndims(sid)) goto error; if (H5Sget_simple_extent_dims(sid, dim, NULL) < 0) goto error; symbol_info[u][v].nrecords = dim[1]; if (H5Sclose(sid) < 0) goto error; } /* end for */ return fid; error: if (config) HDfree(config); H5E_BEGIN_TRY { for (u = 0; u < NLEVELS; u++) for (v = 0; v < symbol_count[u]; v++) H5Dclose(symbol_info[u][v].dsid); H5Sclose(sid); H5Pclose(fapl); H5Fclose(fid); } H5E_END_TRY; return -1; } /* open_skeleton() */ /*------------------------------------------------------------------------- * Function: remove_records * * Purpose: Removes a specified number of records from 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 nshrinks * # of records to remove from the datasets * * unsigned long flush_count * # of records to write before flushing the file to disk * * Return: Success: 0 * Failure: -1 * *------------------------------------------------------------------------- */ static int remove_records(hid_t fid, unsigned verbose, unsigned long nshrinks, unsigned long flush_count) { unsigned long shrink_to_flush; /* # of removals before flush */ hsize_t dim[2] = {1, 0}; /* Dataspace dimensions */ unsigned long u, v; /* Local index variables */ HDassert(fid >= 0); /* Remove records from random datasets, according to frequency distribution */ shrink_to_flush = flush_count; for (u = 0; u < nshrinks; u++) { symbol_info_t *symbol; /* Symbol to remove record from */ hsize_t remove_size; /* Size to reduce dataset dimension by */ /* Get a random dataset, according to the symbol distribution */ symbol = choose_dataset(NULL, NULL, verbose); /* Shrink the dataset's dataspace */ remove_size = (hsize_t)HDrandom() % MAX_REMOVE_SIZE + 1; if (remove_size > symbol->nrecords) symbol->nrecords = 0; else symbol->nrecords -= remove_size; dim[1] = symbol->nrecords; if (H5Dset_extent(symbol->dsid, dim) < 0) goto error; /* Check for flushing file */ if (flush_count > 0) { /* Decrement count of records to write before flushing */ shrink_to_flush--; /* Check for counter being reached */ if (0 == shrink_to_flush) { /* Reset flush counter */ shrink_to_flush = flush_count; } /* end if */ } /* end if */ } /* end for */ /* Emit informational message */ if (verbose) HDfprintf(stderr, "WRITER: 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) goto error; return 0; error: H5E_BEGIN_TRY { for (u = 0; u < NLEVELS; u++) for (v = 0; v < symbol_count[u]; v++) H5Dclose(symbol_info[u][v].dsid); } H5E_END_TRY; return -1; } /* remove_records() */ static void usage(void) { HDprintf("\n"); HDprintf("Usage error!\n"); HDprintf("\n"); HDprintf("Usage: swmr_remove_writer [-q] [-o] [-f <# of shrinks between flushing\n"); HDprintf(" file contents>] [-r ] <# of shrinks>\n"); HDprintf("\n"); HDprintf("<# of shrinks between flushing file contents> should be 0 (for no\n"); HDprintf("flushing) or between 1 and (<# of shrinks> - 1)\n"); HDprintf("\n"); HDprintf("Defaults to verbose (no '-q' given), latest format when opening file (no '-o' given),\n"); HDprintf("flushing every 1000 shrinks ('-f 1000'), and will generate a random seed (no -r given).\n"); HDprintf("\n"); HDexit(1); } /* usage() */ int main(int argc, const char *argv[]) { sigset_t oldset; hid_t fid; /* File ID for file opened */ long nshrinks = 0; /* # of times to shrink the dataset */ long flush_count = 1000; /* # of records to write between flushing file */ unsigned verbose = 1; /* Whether to emit some informational messages */ unsigned old = 0; /* Whether to use non-latest-format when opening file */ 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; block_signals(&oldset); /* 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 = HDatol(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 = HDatoi(argv[u + 1]); random_seed = (unsigned)temp; u += 2; break; /* Use non-latest-format when opening file */ case 'o': old = 1; u++; break; default: usage(); break; } /* end switch */ } /* end if */ else { /* Get the number of records to append */ nshrinks = HDatol(argv[u]); if (nshrinks <= 0) usage(); u++; } /* end else */ } /* end while */ } /* end if */ if (nshrinks <= 0) usage(); if (flush_count >= nshrinks) usage(); /* Emit informational message */ if (verbose) { HDfprintf(stderr, "WRITER: Parameters:\n"); HDfprintf(stderr, "\t# of shrinks between flushes = %ld\n", flush_count); HDfprintf(stderr, "\t# of shrinks = %ld\n", nshrinks); } /* 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 */ HDfprintf(stderr, "WRITER: Using writer random seed: %u\n", random_seed); /* Emit informational message */ if (verbose) HDfprintf(stderr, "WRITER: Generating symbol names\n"); /* Generate dataset names */ if (generate_symbols() < 0) return -1; /* Emit informational message */ if (verbose) { HDfprintf(stderr, "WRITER: Opening skeleton file: %s\n", VFD_SWMR_FILENAME); } /* Open file skeleton */ if ((fid = open_skeleton(VFD_SWMR_FILENAME, verbose, old)) < 0) { HDfprintf(stderr, "WRITER: Error opening skeleton file!\n"); HDexit(1); } /* end if */ /* Send a message to indicate "H5Fopen" is complete--releasing the file lock */ h5_send_message(VFD_SWMR_WRITER_MESSAGE, NULL, NULL); /* Emit informational message */ if (verbose) HDfprintf(stderr, "WRITER: Removing records\n"); /* Remove records from datasets */ if (remove_records(fid, verbose, (unsigned long)nshrinks, (unsigned long)flush_count) < 0) { HDfprintf(stderr, "WRITER: Error removing records from datasets!\n"); HDexit(1); } /* end if */ /* Emit informational message */ if (verbose) HDfprintf(stderr, "WRITER: Releasing symbols\n"); /* Clean up the symbols */ if (shutdown_symbols() < 0) { HDfprintf(stderr, "WRITER: Error releasing symbols!\n"); HDexit(1); } /* end if */ await_signal(fid); restore_signals(&oldset); /* Emit informational message */ if (verbose) HDfprintf(stderr, "WRITER: Closing objects\n"); /* Close objects opened */ if (H5Fclose(fid) < 0) { HDfprintf(stderr, "WRITER: Error closing file!\n"); HDexit(1); } /* end if */ return 0; } /* main() */ #else /* H5_HAVE_WIN32_API */ int main(void) { HDfprintf(stderr, "Non-POSIX platform. Skipping.\n"); return EXIT_SUCCESS; } /* end main() */ #endif /* H5_HAVE_WIN32_API */