Add my work in progress on variable-length string test for VFD SWMR.

1 files changed, 223 insertions, 0 deletions

diff --git a/test/vfd_swmr_vlstr_reader.c b/test/vfd_swmr_vlstr_reader.c
new file mode 100644
index 0000000..dcd4468
--- /dev/null
+++ b/test/vfd_swmr_vlstr_reader.c
@@ -0,0 +1,223 @@
+/*
+ * Copyright by The HDF Group.
+ * Copyright by the Board of Trustees of the University of Illinois.
+ * 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://support.hdfgroup.org/ftp/HDF5/releases.
+ * If you do not have access to either file, you may request a copy from
+ * help@hdfgroup.org.
+ */
+
+#include <err.h>
+#include <time.h> /* nanosleep(2) */
+#include <unistd.h> /* getopt(3) */
+
+#define H5C_FRIEND              /*suppress error about including H5Cpkg   */
+#define H5F_FRIEND              /*suppress error about including H5Fpkg   */
+
+#include "hdf5.h"
+
+#include "H5Cpkg.h"
+#include "H5Fpkg.h"
+// #include "H5Iprivate.h"
+#include "H5HGprivate.h"
+#include "H5VLprivate.h"
+
+#include "testhdf5.h"
+#include "vfd_swmr_common.h"
+
+enum _step {
+  CREATE = 0
+, LENGTHEN
+, SHORTEN
+, DELETE
+, NSTEPS
+} step_t;
+
+static const hid_t badhid = H5I_INVALID_HID; // abbreviate
+static bool caught_out_of_bounds = false;
+
+static void
+read_vl_dset(hid_t dset, hid_t type, hid_t space, char *data)
+{
+    if (H5Dread(dset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, &data) < 0)
+        errx(EXIT_FAILURE, "%s: H5Dwrite", __func__);
+}
+
+static hid_t
+open_vl_dset(hid_t file, hid_t type, const char *name)
+{
+    hid_t dset;
+
+    dset = H5Dopen(file, name, H5P_DEFAULT);
+
+    if (dset == badhid)
+        errx(EXIT_FAILURE, "H5Dopen");
+
+    return dset;
+}
+
+static void
+usage(const char *progname)
+{
+    fprintf(stderr, "usage: %s [-W] [-V]\n", progname);
+    fprintf(stderr, "\n  -W: do not wait for SIGUSR1\n");
+    fprintf(stderr,   "  -n: number of test steps to perform\n");
+    exit(EXIT_FAILURE);
+}
+
+bool
+H5HG_trap(const char *reason)
+{
+    if (strcmp(reason, "out of bounds") == 0) {
+        caught_out_of_bounds = true;
+        return false;
+    }
+    return true;
+}
+
+int
+main(int argc, char **argv)
+{
+    hid_t fapl, fid, space, type;
+    hid_t dset[2];
+    char content[2][96];
+    char name[2][96];
+    H5F_vfd_swmr_config_t config;
+    sigset_t oldsigs;
+    herr_t ret;
+    bool wait_for_signal = true;
+    const hsize_t dims = 1;
+    int ch, i, ntimes = 100;
+    unsigned long tmp;
+    char *end;
+    const struct timespec delay =
+        {.tv_sec = 0, .tv_nsec = 1000 * 1000 * 1000 / 10};
+
+    assert(H5T_C_S1 != badhid);
+
+    while ((ch = getopt(argc, argv, "Wn:")) != -1) {
+        switch(ch) {
+        case 'W':
+            wait_for_signal = false;
+            break;
+        case 'n':
+            errno = 0;
+            tmp = strtoul(optarg, &end, 0);
+            if (end == optarg || *end != '\0')
+                errx(EXIT_FAILURE, "couldn't parse `-n` argument `%s`", optarg);
+            else if (errno != 0)
+                err(EXIT_FAILURE, "couldn't parse `-n` argument `%s`", optarg);
+            else if (tmp > INT_MAX)
+                errx(EXIT_FAILURE, "`-n` argument `%lu` too large", tmp);
+            ntimes = (int)tmp;
+            break;
+        default:
+            usage(argv[0]);
+            break;
+        }
+    }
+    argv += optind;
+    argc -= optind;
+
+    if (argc > 0)
+        errx(EXIT_FAILURE, "unexpected command-line arguments");
+
+    /* Create file access property list */
+    if((fapl = h5_fileaccess()) < 0)
+        errx(EXIT_FAILURE, "h5_fileaccess");
+
+    /* FOR NOW: set to use latest format, the "old" parameter is not used */
+    if(H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
+        errx(EXIT_FAILURE, "H5Pset_libver_bounds");
+
+    /*
+     * Set up to open the file with VFD SWMR configured.
+     */
+
+    /* Enable page buffering */
+    if(H5Pset_page_buffer_size(fapl, 4096, 100, 0) < 0)
+        errx(EXIT_FAILURE, "H5Pset_page_buffer_size");
+
+    memset(&config, 0, sizeof(config));
+
+    config.version = H5F__CURR_VFD_SWMR_CONFIG_VERSION;
+    config.tick_len = 1;
+    config.max_lag = 5;
+    config.writer = true;
+    config.md_pages_reserved = 128;
+    HDstrcpy(config.md_file_path, "./my_md_file");
+
+    /* Enable VFD SWMR configuration */
+    if(H5Pset_vfd_swmr_config(fapl, &config) < 0)
+        errx(EXIT_FAILURE, "H5Pset_vfd_swmr_config");
+
+    fid = H5Fopen("vfd_swmr_vlstr.h5", H5F_ACC_RDONLY, fapl);
+
+    /* Create the VL string datatype and a scalar dataspace, or a
+     * fixed-length string datatype and a simple dataspace.
+     */
+    if ((type = H5Tcopy(H5T_C_S1)) == badhid)
+        errx(EXIT_FAILURE, "H5Tcopy");
+
+    /* Create the VL string datatype and a scalar dataspace */
+    if ((type = H5Tcopy(H5T_C_S1)) == badhid)
+        errx(EXIT_FAILURE, "H5Tcopy");
+
+    if (H5Tset_size(type, H5T_VARIABLE) < 0)
+        errx(EXIT_FAILURE, "H5Tset_size");
+    space = H5Screate(H5S_SCALAR);
+
+    if (space == badhid)
+        errx(EXIT_FAILURE, "H5Screate");
+
+    if (fid == badhid)
+        errx(EXIT_FAILURE, "H5Fcreate");
+
+    block_signals(&oldsigs);
+
+    /* content 1 seq 1 short
+     * content 1 seq 1 long long long long long long long long
+     * content 1 seq 1 medium medium medium
+     */
+    for (i = 0; i < ntimes; i++) {
+        const int ndsets = 2;
+        const int which = i % ndsets;
+        fprintf(stderr, "iteration %d which %d\n", i, which);
+        (void)snprintf(name[which], sizeof(name[which]),
+            "dset-%d", which);
+        dset[which] = open_vl_dset(fid, type, name[which]);
+        read_vl_dset(dset[which], type, space, content[which]);
+#if 0
+        (void)snprintf(content[which], sizeof(content[which]),
+            "content %d seq %d %s", which, seq, tail);
+#endif
+        if (caught_out_of_bounds) {
+            fprintf(stderr, "caught out of bounds\n");
+            break;
+        }
+        nanosleep(&delay, NULL);
+    }
+
+    if (wait_for_signal)
+        await_signal(fid);
+
+    restore_signals(&oldsigs);
+
+    if (H5Pclose(fapl) < 0)
+        errx(EXIT_FAILURE, "H5Pclose(fapl)");
+
+    if (H5Tclose(type) < 0)
+        errx(EXIT_FAILURE, "H5Tclose");
+
+    if (H5Sclose(space) < 0)
+        errx(EXIT_FAILURE, "H5Sclose");
+
+    if (H5Fclose(fid) < 0)
+        errx(EXIT_FAILURE, "H5Fclose");
+
+    return EXIT_SUCCESS;
+}