Bring new/updated tests from revise+chunks branch: flush1/flush2 update and

flushrefresh test.  (Also refactor of message send / wait code)

1 files changed, 1151 insertions, 0 deletions

diff --git a/test/flushrefresh.c b/test/flushrefresh.c
new file mode 100644
index 0000000..e0a7484
--- /dev/null
+++ b/test/flushrefresh.c
@@ -0,0 +1,1151 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Programmer: Mike McGreevy
+ *             June 30, 2010
+ *
+ * Purpose: This test file contains routines used to test flushing and 
+ *          refreshing individual objects' metadata from the cache. 
+ *          
+ *          Note: This file should NOT be run manually. Instead, invoke it 
+ *          via its associated test script, testflushrefresh.sh
+ *
+ */
+
+#define H5FD_FRIEND		/*suppress error about including H5FDpkg	  */
+#define H5FD_TESTING
+
+/* ======== */
+/* Includes */
+/* ======== */
+
+#include "testhdf5.h"
+#include "H5FDpkg.h"		/* File Drivers				*/
+
+/* ======= */
+/* Defines */
+/* ======= */
+
+/* Name of Test File */
+#define FILENAME "flushrefresh.h5"
+
+/* Names of Signal Files */
+#define SIGNAL_TO_SCRIPT "flushrefresh_VERIFICATION_START"
+#define SIGNAL_BETWEEN_PROCESSES_1 "flushrefresh_VERIFICATION_CHECKPOINT1"
+#define SIGNAL_BETWEEN_PROCESSES_2 "flushrefresh_VERIFICATION_CHECKPOINT2"
+#define SIGNAL_FROM_SCRIPT "flushrefresh_VERIFICATION_DONE"
+
+/* Paths to Various Objects in the Testfile */
+#define RG "/"
+#define D1 "/Dataset1"
+#define D2 "/Group1/Dataset2"
+#define D3 "/Group3/Dataset3"
+#define G1 "/Group1"
+#define G2 "/Group1/Group2"
+#define G3 "/Group3"
+#define T1 "/CommittedDatatype1"
+#define T2 "/Group1/Group2/CommittedDatatype2"
+#define T3 "/Group3/CommittedDatatype3"
+
+/* Flushed States */
+#define FLUSHED "FLUSHED"
+#define NOT_FLUSHED "NOT_FLUSHED"
+
+/* Error Handling */
+/* For errors occuring in the main process, use the standard TEST_ERROR macro.
+   For errors occurring in the spawned process (from the test script), use
+   the PROCESS_ERROR macro, which will send a signal to the main process so the
+   main process can propogate errors correctly. */
+FILE * errorfile;
+#define ERRFILE "flushrefresh_ERROR"
+#define PROCESS_ERROR                                            \
+    {                                                            \
+      errorfile = HDfopen(ERRFILE, "w+");                        \
+      HDfprintf(errorfile, "Error occurred in flushrefresh.\n"); \
+      HDfflush(errorfile);                                       \
+      HDfclose(errorfile);                                       \
+      TEST_ERROR;                                                \
+    }
+
+#define CLEANUP_FILES                       \
+    {                                       \
+      HDremove(ERRFILE);                    \
+      HDremove(FILENAME);                   \
+      HDremove(SIGNAL_TO_SCRIPT);           \
+      HDremove(SIGNAL_BETWEEN_PROCESSES_1); \
+      HDremove(SIGNAL_BETWEEN_PROCESSES_2); \
+      HDremove(SIGNAL_FROM_SCRIPT);         \
+    }                                       \
+
+/* ===================== */
+/* Function Declarations */
+/* ===================== */
+
+/* Main */
+int main(int argc, const char *argv[]);
+
+/* Flush Test Framework */
+herr_t test_flush(void);
+herr_t flush_verification(const char * obj_pathname, const char * expected);
+herr_t run_flush_verification_process(const char * obj_pathname, const char * expected);
+
+/* Refresh Test Framework */
+herr_t test_refresh(void);
+herr_t refresh_verification(const char * obj_pathname);
+herr_t start_refresh_verification_process(const char * obj_pathname);
+herr_t end_refresh_verification_process(void);
+
+/* Other Helper Functions */
+herr_t check_for_errors(void);
+herr_t end_verification(void);
+
+/* ========= */
+/* Functions */
+/* ========= */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    main
+ *
+ * Purpose:     This function coordinates the test of flush/refresh
+ *              functionality verification. It accepts either one, two or 
+ *              no command line parameters. The main test routine runs
+ *              with no command line parameters specified, while verification
+ *              routines run with one or two command line parameters.
+ * 
+ *              Note: This program should not be run manually, as the 
+ *              test is controlled by the testflushrefresh.sh script. Running
+ *              the flushrefresh program manually will result in failure, as
+ *              it will time out waiting for a signal from the test script
+ *              which will never come.
+ *
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 1, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+int main(int argc, const char *argv[]) 
+{
+    /* Variables */
+    const char *envval = NULL;
+
+    /* Initialize library */
+    if(H5open() < 0)
+        TEST_ERROR;
+
+    /* Parse command line options */
+    if(argc == 1) {
+        /* No arguments supplied. Run main test routines if 
+         * using sec2 or stdio driver, otherwise don't run 
+         * anything. */
+
+        /* Determine driver being used */
+        envval = HDgetenv("HDF5_DRIVER");
+
+        if(envval == NULL || H5FD_supports_swmr_test(envval)) {
+            if(test_flush() != SUCCEED) TEST_ERROR;
+            if(test_refresh() != SUCCEED) TEST_ERROR;
+        } /* end if */
+        else {
+            HDfprintf(stdout, "Skipping all flush/refresh tests (only run with SWMR-enabled file drivers).\n");
+            
+            /* Test script is expecting some signals, so send them out to end it. */
+            if(end_verification() < 0) TEST_ERROR;
+            if(end_verification() < 0) TEST_ERROR;
+        } /* end else */
+    } else if(argc == 3) {
+        /* Two arguments supplied. Pass them to flush verification routine. */
+        if(flush_verification(argv[1], argv[2]) != 0) PROCESS_ERROR;
+    } else if(argc == 2) {
+        /* One argument supplied. Pass it to refresh verification routine. */
+        if(refresh_verification(argv[1]) != 0) PROCESS_ERROR;
+    } else {
+        /* Illegal number of arguments supplied. Error. */
+        HDfprintf(stderr, "Error. %d is an Invalid number of arguments to main().\n", argc);
+        PROCESS_ERROR
+    } /* end if */
+
+    return SUCCEED;
+
+error:
+    /* Return */
+    return FAIL;
+} /* main */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    test_flush
+ *
+ * Purpose:     This function tests flushing individual objects' metadata
+ *              from the metadata cache.
+ *
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 1, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t test_flush(void) 
+{
+    /**************************************************************************
+     *
+     * Test Description:
+     *
+     * This test will build an HDF5 file with several objects in a varying 
+     * hierarchical layout. It will then attempt to flush the objects
+     * in the file one by one, individually, using the four H5*flush
+     * routines (D,G,T, and O). After each call to either create or flush an 
+     * object, a series of verifications will occur on each object in the file.
+     *
+     * Each verification consists of spawning off a new process and determining
+     * if the object can be opened and its information retreived in said 
+     * alternate process. It reports the results, which are compared to an 
+     * expected value (either that the object can be found on disk, or that it
+     * cannot).
+     *
+     * Note that to spawn a verification, this program sends a signal (by creating
+     * a file on disk) to the test script controlling it, indicating how to 
+     * run the verification.
+     * 
+     * Implementation is funky, but basically, an example: 
+     *
+     * Step 1. Dataset is created.
+     * Step 2. Verify that dataset can't be opened by separate process, as
+     *         it should not have been flushed to disk yet.
+     * Step 3. Group is created.
+     * Step 4. Verify that group can't be opened by separate process.
+     * Step 5. H5Gflush is called on the group.
+     * Step 6. Verify that group CAN be opened, but dataset still has
+     *         yet to hit disk, and CANNOT be opened. Success! Only the group 
+     *         was flushed.
+     *
+     **************************************************************************/
+
+    /**************************************************************************
+      * Generated Test File will look like this:
+      * 
+      * GROUP "/"
+      *   DATASET "Dataset1"
+      *   GROUP "Group1" {
+      *     DATASET "Dataset2"
+      *     GROUP "Group2" {
+      *       DATATYPE "CommittedDatatype3"
+      *     }
+      *   }
+      *   GROUP "Group3" {
+      *     DATASET "Dataset3"
+      *     DATATYPE "CommittedDatatype2"
+      *   }
+      *   DATATYPE "CommittedDatatype1"
+     **************************************************************************/
+
+    /* Variables */
+    hid_t fid,gid,gid2,gid3,sid,tid1,tid2,tid3,did,did2,did3,rid,fapl,status = 0;
+    hsize_t dims[2] = {3,5};
+
+    /* Testing Message */
+    HDfprintf(stdout, "Testing individual object flush behavior:\n");
+
+    /* Cleanup any old error or signal files */
+    CLEANUP_FILES;
+    
+    /* ================ */
+    /* CREATE TEST FILE */
+    /* ================ */
+
+    /* Create file, open root group - have to use latest file format for SWMR */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0) TEST_ERROR;
+    if(H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0) TEST_ERROR; 
+    if((fid = H5Fcreate(FILENAME, H5F_ACC_TRUNC|H5F_ACC_SWMR_WRITE, H5P_DEFAULT, fapl)) < 0) TEST_ERROR;
+    if((rid = H5Gopen2(fid, "/", H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create data space and types */
+    if((sid = H5Screate_simple(2, dims, dims)) < 0) TEST_ERROR;
+    if((tid1 = H5Tcopy(H5T_NATIVE_INT)) < 0) TEST_ERROR;
+    if((tid2 = H5Tcopy(H5T_NATIVE_CHAR)) < 0) TEST_ERROR;
+    if((tid3 = H5Tcopy(H5T_NATIVE_LONG)) < 0) TEST_ERROR;
+
+    /* Create Group1 */
+    if((gid = H5Gcreate2(fid, "Group1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Group2 */
+    if((gid2 = H5Gcreate2(gid, "Group2", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Group3 */
+    if((gid3 = H5Gcreate2(fid, "Group3", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Dataset1 */
+    if((did = H5Dcreate2(fid, "Dataset1", tid1, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Dataset2 */
+    if((did2 = H5Dcreate2(gid, "Dataset2", tid3, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Dataset3 */
+    if((did3 = H5Dcreate2(gid3, "Dataset3", tid2, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create CommittedDatatype1 */
+    if((status = H5Tcommit2(fid, "CommittedDatatype1", tid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create CommittedDatatype2 */
+    if((status = H5Tcommit2(gid2, "CommittedDatatype2", tid2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create CommittedDatatype3 */
+    if((status = H5Tcommit2(gid3, "CommittedDatatype3", tid3, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* ============ */
+    /* FLUSH GROUPS */
+    /* ============ */
+
+    /* Test */
+    TESTING("to ensure H5Gflush correctly flushes single groups");
+
+    /* First, let's verify that nothing is currently flushed. */
+    if(run_flush_verification_process(RG, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    /* Then, flush the root group and verify it's the only thing on disk */
+    if((status = H5Gflush(rid)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    /* Flush Group1 and Verify it is recently flushed, and nothing 
+     * else has changed. */
+    if((status = H5Gflush(gid)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    /* Flush Group2 and Verify it is recently flushed, and nothing 
+     * else has changed. */
+    if((status = H5Gflush(gid2)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    PASSED();
+
+    /* ============== */
+    /* FLUSH DATASETS */
+    /* ============== */
+
+    /* Test */
+    TESTING("to ensure H5Dflush correctly flushes single datasets");
+
+    /* Flush Dataset1 and verify it's the only thing that hits disk. */
+    if((status = H5Dflush(did)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    /* Flush Dataset2 and verify it's the only thing that hits disk. */
+    if((status = H5Dflush(did2)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    PASSED();
+
+    /* =============== */
+    /* FLUSH DATATYPES */
+    /* =============== */
+
+    /* Test */
+    TESTING("to ensure H5Tflush correctly flushes single datatypes");
+
+    /* Flush Datatype 1 and verify it's the only thing that hits disk. */
+    if((status = H5Tflush(tid1)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    /* Flush Datatype 2 and verify it's the only thing that hits disk. */
+    if((status = H5Tflush(tid2)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    PASSED();
+    
+    /* ============= */
+    /* FLUSH OBJECTS */
+    /* ============= */
+
+    /* Test */
+    TESTING("to ensure H5Oflush correctly flushes single objects");
+
+    /* Flush Group3 and verify it's the only thing that hits disk. */
+    if((status = H5Oflush(gid3)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, NOT_FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    /* Flush Dataset3 and verify it's the only thing that hits disk. */
+    if((status = H5Oflush(did3)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, NOT_FLUSHED) != 0) TEST_ERROR;
+
+    /* Flush CommittedDatatype3 and verify it's the only thing that hits disk. */
+    if((status = H5Oflush(tid3)) < 0) TEST_ERROR;
+    if(run_flush_verification_process(RG, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(G3, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(D3, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T1, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T2, FLUSHED) != 0) TEST_ERROR;
+    if(run_flush_verification_process(T3, FLUSHED) != 0) TEST_ERROR;
+
+    PASSED();
+
+    /* ================== */
+    /* Cleanup and Return */  
+    /* ================== */
+    if(H5Pclose(fapl) < 0) TEST_ERROR;
+    if(H5Gclose(gid) < 0) TEST_ERROR;
+    if(H5Gclose(gid2) < 0) TEST_ERROR;
+    if(H5Dclose(did) < 0) TEST_ERROR;
+    if(H5Dclose(did2) < 0) TEST_ERROR;
+    if(H5Gclose(rid) < 0) TEST_ERROR;
+    if(H5Fclose(fid) < 0) TEST_ERROR;
+
+    /* Delete test file */
+    HDremove(FILENAME);
+
+    if(end_verification() < 0) TEST_ERROR;
+
+    return SUCCEED;
+
+error:
+    return FAIL;
+} /* end test_flush */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    test_refresh
+ *
+ * Purpose:     This function tests refresh (evict/reload) of individual 
+ *              objects' metadata from the metadata cache.
+ *
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              August 17, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t test_refresh(void) 
+{
+    /**************************************************************************
+     *
+     * Test Description:
+     *
+     * This test will build an HDF5 file with several objects in a varying 
+     * hierarchical layout. It will then flush the entire file to disk. Then,
+     * an attribute will be added to each object in the file.
+     * 
+     * One by one, this process will flush each object to disk, individually.
+     * It will also be coordinating with another process, which will open
+     * the object before it is flushed by this process, and then refresh the
+     * object after it's been flushed, comparing the before and after object
+     * information to ensure that they are as expected. (i.e., most notably,
+     * that an attribute has been added, and is only visible after a 
+     * successful call to a H5*refresh function).
+     * 
+     * As with the flush case, the implemention is a bit tricky as it's 
+     * dealing with signals going back and forth between the two processes
+     * to ensure the timing is correct, but basically, an example: 
+     *
+     * Step 1. Dataset is created.
+     * Step 2. Dataset is flushed.
+     * Step 3. Attribute on Dataset is created.
+     * Step 4. Another process opens the dataset and verifies that it does
+     *         not see an attribute (as the attribute hasn't been flushed yet).
+     * Step 5. This process flushes the dataset again (with Attribute attached).
+     * Step 6. The other process calls H5Drefresh, which should evict/reload
+     *         the object's metadata, and thus pick up the attribute that's
+     *         attached to it. Most other before/after object information is 
+     *         compared for sanity as well.
+     * Step 7. Rinse and Repeat for each object in the file.
+     *
+     **************************************************************************/
+
+    /**************************************************************************
+      * Generated Test File will look like this:
+      * 
+      * GROUP "/"
+      *   DATASET "Dataset1"
+      *   GROUP "Group1" {
+      *     DATASET "Dataset2"
+      *     GROUP "Group2" {
+      *       DATATYPE "CommittedDatatype3"
+      *     }
+      *   }
+      *   GROUP "Group3" {
+      *     DATASET "Dataset3"
+      *     DATATYPE "CommittedDatatype2"
+      *   }
+      *   DATATYPE "CommittedDatatype1"
+     **************************************************************************/
+
+    /* Variables */
+    hid_t aid,fid,sid,tid1,did,dcpl,fapl = 0;
+    hid_t gid,gid2,gid3,tid2,tid3,did2,did3;
+    herr_t status = 0;
+    hsize_t dims[2] = {50,50};
+    hsize_t cdims[2] = {1,1};
+    int fillval = 2;
+
+    /* Testing Message */
+    HDfprintf(stdout, "Testing individual object refresh behavior:\n");
+
+    /* Cleanup any old error or signal files */
+    CLEANUP_FILES;
+
+    /* ================ */
+    /* CREATE TEST FILE */
+    /* ================ */
+
+    /* Create File */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0) TEST_ERROR;
+    if(H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0) TEST_ERROR;
+    if((fid = H5Fcreate(FILENAME, H5F_ACC_TRUNC|H5F_ACC_SWMR_WRITE, H5P_DEFAULT, fapl)) < 0) TEST_ERROR;
+
+    /* Create data space and types */
+    if((dcpl = H5Pcreate(H5P_DATASET_CREATE)) < 0) TEST_ERROR;
+    if(H5Pset_chunk(dcpl, 2, cdims) < 0) TEST_ERROR;
+    if(H5Pset_fill_value(dcpl, H5T_NATIVE_INT, &fillval) < 0) TEST_ERROR;
+    if((sid = H5Screate_simple(2, dims, dims)) < 0) TEST_ERROR;
+    if((tid1 = H5Tcopy(H5T_NATIVE_INT)) < 0) TEST_ERROR;
+    if((tid2 = H5Tcopy(H5T_NATIVE_CHAR)) < 0) TEST_ERROR;
+    if((tid3 = H5Tcopy(H5T_NATIVE_LONG)) < 0) TEST_ERROR;
+
+    /* Create Group1 */
+    if((gid = H5Gcreate2(fid, "Group1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Group2 */
+    if((gid2 = H5Gcreate2(gid, "Group2", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Group3 */
+    if((gid3 = H5Gcreate2(fid, "Group3", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Dataset1 */
+    if((did = H5Dcreate2(fid, "Dataset1", tid1, sid, H5P_DEFAULT, dcpl, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Dataset2 */
+    if((did2 = H5Dcreate2(gid, "Dataset2", tid3, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create Dataset3 */
+    if((did3 = H5Dcreate2(gid3, "Dataset3", tid2, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create CommittedDatatype1 */
+    if((status = H5Tcommit2(fid, "CommittedDatatype1", tid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create CommittedDatatype2 */
+    if((status = H5Tcommit2(gid2, "CommittedDatatype2", tid2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Create CommittedDatatype3 */
+    if((status = H5Tcommit2(gid3, "CommittedDatatype3", tid3, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+
+    /* Flush File to Disk */
+    if(H5Fflush(fid, H5F_SCOPE_GLOBAL) < 0) TEST_ERROR;
+
+    /* ================ */
+    /* Refresh Datasets */
+    /* ================ */
+
+    TESTING("to ensure that H5Drefresh correctly refreshes single datasets");
+
+    /* Create an attribute on each object before flush. */
+
+    /* Verify First Dataset can be refreshed with H5Drefresh */
+    if(start_refresh_verification_process(D1) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(did, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(did) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    /* Verify Second Dataset can be refreshed with H5Drefresh */
+    if(start_refresh_verification_process(D2) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(did2, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(did2) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    PASSED();
+
+    /* ============== */
+    /* Refresh Groups */
+    /* ============== */
+
+    TESTING("to ensure that H5Grefresh correctly refreshes single groups");
+
+    /* Verify First Group can be refreshed with H5Grefresh */
+    if(start_refresh_verification_process(G1) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(gid, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(gid) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    /* Verify Second Group can be refreshed with H5Grefresh */
+    if(start_refresh_verification_process(G2) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(gid2, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(gid2) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    PASSED();
+
+    /* ================= */
+    /* Refresh Datatypes */
+    /* ================= */
+
+    TESTING("to ensure that H5Trefresh correctly refreshes single datatypes");
+
+    /* Verify First Committed Datatype can be refreshed with H5Trefresh */
+    if(start_refresh_verification_process(T1) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(tid1, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(tid1) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    /* Verify Second Committed Datatype can be refreshed with H5Trefresh */
+    if(start_refresh_verification_process(T2) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(tid2, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(tid2) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    PASSED();
+
+    /* =============== */
+    /* Refresh Objects */
+    /* =============== */
+
+    TESTING("to ensure that H5Orefresh correctly refreshes single objects");
+
+    /* Verify Third Dataset can be refreshed with H5Orefresh */
+    if(start_refresh_verification_process(D3) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(did3, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(did3) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    /* Verify Third Group can be refreshed with H5Orefresh */
+    if(start_refresh_verification_process(G3) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(gid3, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(gid3) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    /* Verify Third Committed Datatype can be refreshed with H5Orefresh */
+    if(start_refresh_verification_process(T3) != 0) TEST_ERROR;
+
+    if((aid = H5Acreate2(tid3, "Attribute", tid1, sid, H5P_DEFAULT, H5P_DEFAULT)) < 0) TEST_ERROR;
+    if(H5Aclose(aid) < 0) TEST_ERROR;
+    if(H5Oflush(tid3) < 0) TEST_ERROR;
+
+    if(end_refresh_verification_process() != 0) TEST_ERROR;
+
+    PASSED();
+
+    /* ================== */
+    /* Cleanup and Return */  
+    /* ================== */
+
+    /* Close Stuff */
+    if(H5Pclose(fapl) < 0) TEST_ERROR;
+    if(H5Pclose(dcpl) < 0) TEST_ERROR;
+    if(H5Tclose(tid1) < 0) TEST_ERROR;
+    if(H5Tclose(tid2) < 0) TEST_ERROR;
+    if(H5Tclose(tid3) < 0) TEST_ERROR;
+    if(H5Dclose(did) < 0) TEST_ERROR;
+    if(H5Dclose(did2) < 0) TEST_ERROR;
+    if(H5Dclose(did3) < 0) TEST_ERROR;
+    if(H5Gclose(gid) < 0) TEST_ERROR;
+    if(H5Gclose(gid2) < 0) TEST_ERROR;
+    if(H5Gclose(gid3) < 0) TEST_ERROR;
+    if(H5Sclose(sid) < 0) TEST_ERROR;
+    if(H5Fclose(fid) < 0) TEST_ERROR;
+
+    /* Delete Test File */
+    HDremove(FILENAME);
+
+    if(end_verification() < 0) TEST_ERROR;
+
+    return SUCCEED;
+
+error:
+    /* Return */
+    return FAIL;
+} /* test_refresh() */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    run_flush_verification_process
+ *
+ * Purpose:     This function is used to communicate with the test script
+ *              in order to spawn off a process to verify that a flush
+ *              of an individual object was successful. 
+ * 
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 16, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t run_flush_verification_process(const char * obj_pathname, const char * expected) 
+{
+    HDremove(SIGNAL_FROM_SCRIPT);
+
+    /* Send Signal to SCRIPT indicating that it should kick off a verification process. */
+    h5_send_message(SIGNAL_TO_SCRIPT, obj_pathname, expected);
+
+    /* Wait for Signal from SCRIPT indicating that verification process has completed. */
+    if(h5_wait_message(SIGNAL_FROM_SCRIPT) < 0) TEST_ERROR;
+
+    /* Check to see if any errors occurred */
+    if(check_for_errors() < 0) TEST_ERROR;
+
+    /* Return */
+    return SUCCEED;
+
+error:
+    return FAIL;
+} /* run_flush_verification_process */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    flush_verification
+ *
+ * Purpose:     This function tries to open target object in the test file.
+ *              It compares the success of the open function to the expected 
+ *              value, and succeeds if they are equal and fails if they differ.
+ *
+ *              Note that full path to the object must be provided as the 
+ *              obj_pathname argument.
+ *
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 16, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t flush_verification(const char * obj_pathname, const char * expected) 
+{
+    /* Variables */
+    hid_t oid = -1, fid = -1;
+    herr_t status = 0;
+    H5O_info_t oinfo;
+
+    /* Try to open the testfile and then obj_pathname within the file */
+    H5E_BEGIN_TRY {
+        fid = H5Fopen(FILENAME, H5F_ACC_SWMR_READ, H5P_DEFAULT);
+        oid = H5Oopen(fid, obj_pathname, H5P_DEFAULT);
+        status = H5Oget_info(oid, &oinfo);
+    } H5E_END_TRY;
+
+    /* Compare to expected result */
+    if(HDstrcmp(expected, FLUSHED) == 0) {
+        if((oid < 0) || (status < 0)) {
+            HDfprintf(stderr, "Error! %s should be on disk, but was NOT!\n", obj_pathname);
+            PROCESS_ERROR;
+        } /* end if */
+    } else if(HDstrcmp(expected, NOT_FLUSHED) == 0) {
+        if((oid > 0) || (status > 0)) {
+            HDfprintf(stderr, "Error! %s not expected to be flushed, but it was found on disk!\n", obj_pathname);
+            PROCESS_ERROR;
+        } /* end if */
+    } else {
+        HDfprintf(stderr, "Error! Bad verification parameters. %s is an invalid expected outcome.\n", expected);
+        PROCESS_ERROR;
+    } /* end if */
+
+    /* Cleanup */
+    H5E_BEGIN_TRY {
+        H5Oclose(oid);
+        H5Fclose(fid);
+    } H5E_END_TRY;
+
+    return SUCCEED;
+
+error:
+    return FAIL;
+} /* flush_verification */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    start_refresh_verification_process
+ *
+ * Purpose:     This function is used to communicate with the test script
+ *              in order to spawn off a process which will test the
+ *              H5*refresh routine.
+ * 
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 16, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t start_refresh_verification_process(const char * obj_pathname) 
+{
+    HDremove(SIGNAL_BETWEEN_PROCESSES_1);
+
+    /* Send Signal to SCRIPT indicating that it should kick off a refresh 
+       verification process */
+    h5_send_message(SIGNAL_TO_SCRIPT, obj_pathname, NULL);
+    
+    /* Wait for Signal from VERIFICATION PROCESS indicating that it's opened the
+       target object and ready for MAIN PROCESS to modify it */
+    if(h5_wait_message(SIGNAL_BETWEEN_PROCESSES_1) < 0) TEST_ERROR;
+
+    /* Check to see if any errors occurred */
+    if(check_for_errors() < 0) TEST_ERROR;
+
+    /* Return */
+    return SUCCEED;
+
+error:
+    return FAIL;
+} /* start_refresh_verification_process */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    end_refresh_verification_process
+ *
+ * Purpose:     This function is used to communicate with the verification
+ *              process spawned by the start_refresh_verification_process 
+ *              function. It gives it the go-ahead to call H5*refresh
+ *              on an object and conlcude the refresh verification.
+ * 
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 16, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t end_refresh_verification_process(void) 
+{ 
+    HDremove(SIGNAL_FROM_SCRIPT);
+
+    /* Send Signal to REFRESH VERIFICATION PROCESS indicating that the object
+        has been modified and it should now attempt to refresh its metadata,
+        and verify the results. */
+    h5_send_message(SIGNAL_BETWEEN_PROCESSES_2, NULL, NULL);
+
+    /* Wait for Signal from SCRIPT indicating that the refresh verification
+        process has completed. */
+    if(h5_wait_message(SIGNAL_FROM_SCRIPT) < 0) TEST_ERROR;
+
+    /* Check to see if any errors occurred */
+    if(check_for_errors() < 0) TEST_ERROR;
+
+    /* Return */
+    return SUCCEED;
+
+error:
+    return FAIL;
+} /* end_refresh_verification_process */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    refresh_verification
+ *
+ * Purpose:     This function opens the specified object, and checks to see
+ *              that is does not have any attributes on it. It then sends
+ *              a signal to the main process, which will flush the object
+ *              (putting an attribute on the object on disk). This function
+ *              will then refresh the object, and verify that it has picked
+ *              up the new metadata reflective of the added attribute.
+ *
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 16, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t refresh_verification(const char * obj_pathname) 
+{
+    /* Variables */
+    hid_t oid,fid,status = 0;
+    H5O_info_t flushed_oinfo;
+    H5O_info_t refreshed_oinfo;
+    int tries = 800, sleep_tries = 400;
+    hbool_t ok = FALSE;
+    
+    HDremove(SIGNAL_BETWEEN_PROCESSES_2);
+
+    /* Open Object */
+    if((fid = H5Fopen(FILENAME, H5F_ACC_SWMR_READ, H5P_DEFAULT)) < 0) PROCESS_ERROR;
+    if((oid = H5Oopen(fid, obj_pathname, H5P_DEFAULT)) < 0) PROCESS_ERROR;
+
+    /* Get Object info */
+    if((status = H5Oget_info(oid, &flushed_oinfo)) < 0) PROCESS_ERROR;
+    
+    /* Make sure there are no attributes on the object. This is just a sanity
+        check to ensure we didn't erroneously flush the attribute before
+        starting the verification. */
+    if(flushed_oinfo.num_attrs != 0)
+	PROCESS_ERROR;
+
+    /* Send Signal to MAIN PROCESS indicating that it can go ahead and modify the 
+        object. */
+    h5_send_message(SIGNAL_BETWEEN_PROCESSES_1, obj_pathname, NULL);
+
+    /* Wait for Signal from MAIN PROCESS indicating that it's modified the 
+        object and we can run verification now. */
+    if(h5_wait_message(SIGNAL_BETWEEN_PROCESSES_2) < 0) PROCESS_ERROR;
+
+    /* Get object info again. This will NOT reflect what's on disk, only what's 
+       in the cache. Thus, all values will be unchanged from above, despite 
+       newer information being on disk. */
+    if((status = H5Oget_info(oid, &refreshed_oinfo)) < 0) PROCESS_ERROR;
+
+    /* Verify that before doing a refresh, getting the object info returns stale
+       information. (i.e., unchanged from above, despite new info on disk). */
+    if(flushed_oinfo.addr != refreshed_oinfo.addr) PROCESS_ERROR;
+    if(flushed_oinfo.type != refreshed_oinfo.type) PROCESS_ERROR;
+    if(flushed_oinfo.hdr.version != refreshed_oinfo.hdr.version) PROCESS_ERROR;
+    if(flushed_oinfo.hdr.flags != refreshed_oinfo.hdr.flags) PROCESS_ERROR;
+    if(flushed_oinfo.num_attrs != refreshed_oinfo.num_attrs) PROCESS_ERROR;
+    if(flushed_oinfo.hdr.nmesgs != refreshed_oinfo.hdr.nmesgs) PROCESS_ERROR;
+    if(flushed_oinfo.hdr.nchunks != refreshed_oinfo.hdr.nchunks) PROCESS_ERROR;
+    if(flushed_oinfo.hdr.space.total != refreshed_oinfo.hdr.space.total) PROCESS_ERROR;
+
+    /* Refresh object */
+    /* The H5*refresh function called depends on which object we are trying
+     * to refresh. (MIKE: add desired refresh call as parameter so adding new
+     * test cases is easy). */
+    do {
+
+	if((HDstrcmp(obj_pathname, D1) == 0) || (HDstrcmp(obj_pathname, D2) == 0)) {
+	    if(H5Drefresh(oid) < 0) PROCESS_ERROR;
+	} /* end if */
+	else if((HDstrcmp(obj_pathname, G1) == 0) || (HDstrcmp(obj_pathname, G2) == 0)) {
+	    if(H5Grefresh(oid) < 0) PROCESS_ERROR;
+	} /* end if */
+	else if((HDstrcmp(obj_pathname, T1) == 0) || (HDstrcmp(obj_pathname, T2) == 0)) {
+	    if(H5Trefresh(oid) < 0) PROCESS_ERROR;
+	} /* end if */
+	else if((HDstrcmp(obj_pathname, D3) == 0) || (HDstrcmp(obj_pathname, G3) == 0) ||
+                (HDstrcmp(obj_pathname, T3) == 0)) {
+	    if(H5Orefresh(oid) < 0) PROCESS_ERROR;
+	} /* end if */
+	else {
+	    HDfprintf(stdout, "Error. %s is an unrecognized object.\n", obj_pathname);
+	    PROCESS_ERROR;
+	} /* end else */
+
+	/* Get object info. This should now accurately reflect the refreshed object on disk. */
+	if((status = H5Oget_info(oid, &refreshed_oinfo)) < 0) PROCESS_ERROR;
+    
+	/* Confirm following (first 4) attributes are the same: */
+	/* Confirm following (last 4) attributes are different */
+	if( (flushed_oinfo.addr == refreshed_oinfo.addr) &&
+	    (flushed_oinfo.type == refreshed_oinfo.type) &&
+	    (flushed_oinfo.hdr.version == refreshed_oinfo.hdr.version) &&
+	    (flushed_oinfo.hdr.flags == refreshed_oinfo.hdr.flags) &&
+	    (flushed_oinfo.num_attrs != refreshed_oinfo.num_attrs) &&
+	    (flushed_oinfo.hdr.nmesgs != refreshed_oinfo.hdr.nmesgs) &&
+	    (flushed_oinfo.hdr.nchunks != refreshed_oinfo.hdr.nchunks) &&
+	    (flushed_oinfo.hdr.space.total != refreshed_oinfo.hdr.space.total) ) {
+		ok = TRUE;
+		break;
+	}
+	if(tries == sleep_tries)
+	    HDsleep(1);
+
+    } while(--tries);
+    
+    if(!ok) {
+	printf("FLUSHED: num_attrs=%d, nmesgs=%d, nchunks=%d, total=%d\n",
+	    (int)flushed_oinfo.num_attrs, (int)flushed_oinfo.hdr.nmesgs,
+	    (int)flushed_oinfo.hdr.nchunks, (int)flushed_oinfo.hdr.space.total);
+	printf("REFRESHED: num_attrs=%d, nmesgs=%d, nchunks=%d, total=%d\n",
+	    (int)refreshed_oinfo.num_attrs, (int)refreshed_oinfo.hdr.nmesgs,
+	    (int)refreshed_oinfo.hdr.nchunks, (int)refreshed_oinfo.hdr.space.total);
+	PROCESS_ERROR;
+    }
+    
+    /* Close objects */
+    if(H5Oclose(oid) < 0) PROCESS_ERROR;
+    if(H5Fclose(fid) < 0) PROCESS_ERROR;
+
+    /* Return */
+    return SUCCEED;
+
+error:
+    return FAIL;
+} /* refresh_verification */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    check_for_errors()
+ *
+ * Purpose:     This function checks the status of external verification
+ *              processes to see if they've succeeded. It checks for the
+ *              existance of flushrefresh_ERROR file. If present, that indicates
+ *              an external verification process has failed, and this function
+ *              thus fails as well. If not present, then nothing else has 
+ *              failed, and this function succeeds.
+ *
+ * Return:      0 on Success, 1 on Failure
+ *
+ * Programmer:  Mike McGreevy
+ *              July 1, 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t check_for_errors(void) 
+{
+    FILE * file;
+
+    if((file = HDfopen(ERRFILE, "r"))) {
+        HDfclose(file);
+        HDremove(ERRFILE);
+        return FAIL;
+    } /* end if */
+
+    return SUCCEED;
+} /* check_for_errors */
+
+
+/*-------------------------------------------------------------------------
+ * Function:    end_verification
+ * 
+ * Purpose:     Tells test script that verification routines are completed and 
+ *              that the test can wrap up. 
+ *
+ * Return:      void
+ *
+ * Programmer:  Mike McGreevy
+ *              July 16, 2010
+ * 
+ *-------------------------------------------------------------------------
+ */
+herr_t end_verification(void) 
+{
+    HDremove(SIGNAL_FROM_SCRIPT);
+
+    /* Send Signal to SCRIPT to indicate that we're done with verification. */
+    h5_send_message(SIGNAL_TO_SCRIPT, "VERIFICATION_DONE", "VERIFICATION_DONE");
+    
+    /* Wait for Signal from SCRIPT indicating that we can continue. */
+    if(h5_wait_message(SIGNAL_FROM_SCRIPT) < 0) TEST_ERROR;
+
+    return SUCCEED;
+
+error:
+    return FAIL;
+} /* end_verification */
+