"""\ Generic (shallow and deep) copying operations ============================================= Interface summary: import copy x = copy.copy(y) # make a shallow copy of y x = copy.deepcopy(y) # make a deep copy of y For module specific errors, copy.error is raised. The difference between shallow and deep copying is only relevant for compound objects (objects that contain other objects, like lists or class instances). - A shallow copy constructs a new compound object and then (to the extent possible) inserts *the same objects* into in that the original contains. - A deep copy constructs a new compound object and then, recursively, inserts *copies* into it of the objects found in the original. Two problems often exist with deep copy operations that don't exist with shallow copy operations: a) recursive objects (compound objects that, directly or indirectly, contain a reference to themselves) may cause a recursive loop b) because deep copy copies *everything* it may copy too much, e.g. administrative data structures that should be shared even between copies Python's deep copy operation avoids these problems by: a) keeping a table of objects already copied during the current copying pass b) letting user-defined classes override the copying operation or the set of components copied This version does not copy types like module, class, function, method, nor stack trace, stack frame, nor file, socket, window, nor array, nor any similar types. Classes can use the same interfaces to control copying that they use to control pickling: they can define methods called __getinitargs__(), __getstate__() and __setstate__(). See the documentation for module "pickle" for information on these methods. """ # XXX need to support copy_reg here too... import types error = 'copy.error' Error = error # backward compatibility def copy(x): """Shallow copy operation on arbitrary Python objects. See the module's __doc__ string for more info. """ try: copierfunction = _copy_dispatch[type(x)] except KeyError: try: copier = x.__copy__ except AttributeError: raise error, \ "un(shallow)copyable object of type %s" % type(x) y = copier() else: y = copierfunction(x) return y _copy_dispatch = d = {} def _copy_atomic(x): return x d[types.NoneType] = _copy_atomic d[types.IntType] = _copy_atomic d[types.LongType] = _copy_atomic d[types.FloatType] = _copy_atomic d[types.StringType] = _copy_atomic try: d[types.CodeType] = _copy_atomic except AttributeError: pass d[types.TypeType] = _copy_atomic d[types.XRangeType] = _copy_atomic d[types.ClassType] = _copy_atomic def _copy_list(x): return x[:] d[types.ListType] = _copy_list def _copy_tuple(x): return x[:] d[types.TupleType] = _copy_tuple def _copy_dict(x): return x.copy() d[types.DictionaryType] = _copy_dict def _copy_inst(x): if hasattr(x, '__copy__'): return x.__copy__() if hasattr(x, '__getinitargs__'): args = x.__getinitargs__() y = apply(x.__class__, args) else: y = _EmptyClass() y.__class__ = x.__class__ if hasattr(x, '__getstate__'): state = x.__getstate__() else: state = x.__dict__ if hasattr(y, '__setstate__'): y.__setstate__(state) else: y.__dict__.update(state) return y d[types.InstanceType] = _copy_inst del d def deepcopy(x, memo = None): """Deep copy operation on arbitrary Python objects. See the module's __doc__ string for more info. """ if memo is None: memo = {} d = id(x) if memo.has_key(d): return memo[d] try: copierfunction = _deepcopy_dispatch[type(x)] except KeyError: try: copier = x.__deepcopy__ except AttributeError: raise error, \ "un-deep-copyable object of type %s" % type(x) y = copier(memo) else: y = copierfunction(x, memo) memo[d] = y return y _deepcopy_dispatch = d = {} def _deepcopy_atomic(x, memo): return x d[types.NoneType] = _deepcopy_atomic d[types.IntType] = _deepcopy_atomic d[types.LongType] = _deepcopy_atomic d[types.FloatType] = _deepcopy_atomic d[types.StringType] = _deepcopy_atomic d[types.CodeType] = _deepcopy_atomic d[types.TypeType] = _deepcopy_atomic d[types.XRangeType] = _deepcopy_atomic def _deepcopy_list(x, memo): y = [] memo[id(x)] = y for a in x: y.append(deepcopy(a, memo)) return y d[types.ListType] = _deepcopy_list def _deepcopy_tuple(x, memo): y = [] for a in x: y.append(deepcopy(a, memo)) d = id(x) try: return memo[d] except KeyError: pass for i in range(len(x)): if x[i] is not y[i]: y = tuple(y) break else: y = x memo[d] = y return y d[types.TupleType] = _deepcopy_tuple def _deepcopy_dict(x, memo): y = {} memo[id(x)] = y for key in x.keys(): y[deepcopy(key, memo)] = deepcopy(x[key], memo) return y d[types.DictionaryType] = _deepcopy_dict def _keep_alive(x, memo): """Keeps a reference to the object x in the memo. Because we remember objects by their id, we have to assure that possibly temporary objects are kept alive by referencing them. We store a reference at the id of the memo, which should normally not be used unless someone tries to deepcopy the memo itself... """ try: memo[id(memo)].append(x) except KeyError: # aha, this is the first one :-) memo[id(memo)]=[x] def _deepcopy_inst(x, memo): if hasattr(x, '__deepcopy__'): return x.__deepcopy__(memo) if hasattr(x, '__getinitargs__'): args = x.__getinitargs__() _keep_alive(args, memo) args = deepcopy(args, memo) y = apply(x.__class__, args) else: y = _EmptyClass() y.__class__ = x.__class__ memo[id(x)] = y if hasattr(x, '__getstate__'): state = x.__getstate__() _keep_alive(state, memo) else: state = x.__dict__ state = deepcopy(state, memo) if hasattr(y, '__setstate__'): y.__setstate__(state) else: y.__dict__.update(state) return y d[types.InstanceType] = _deepcopy_inst del d del types # Helper for instance creation without calling __init__ class _EmptyClass: pass def _test(): l = [None, 1, 2L, 3.14, 'xyzzy', (1, 2L), [3.14, 'abc'], {'abc': 'ABC'}, (), [], {}] l1 = copy(l) print l1==l l1 = map(copy, l) print l1==l l1 = deepcopy(l) print l1==l class C: def __init__(self, arg=None): self.a = 1 self.arg = arg if __name__ == '__main__': import sys file = sys.argv[0] else: file = __file__ self.fp = open(file) self.fp.close() def __getstate__(self): return {'a': self.a, 'arg': self.arg} def __setstate__(self, state): for key in state.keys(): setattr(self, key, state[key]) def __deepcopy__(self, memo = None): new = self.__class__(deepcopy(self.arg, memo)) new.a = self.a return new c = C('argument sketch') l.append(c) l2 = copy(l) print l == l2 print l print l2 l2 = deepcopy(l) print l == l2 print l print l2 l.append({l[1]: l, 'xyz': l[2]}) l3 = copy(l) import repr print map(repr.repr, l) print map(repr.repr, l1) print map(repr.repr, l2) print map(repr.repr, l3) l3 = deepcopy(l) import repr print map(repr.repr, l) print map(repr.repr, l1) print map(repr.repr, l2) print map(repr.repr, l3) if __name__ == '__main__': _test() href='/oss-git/hdf5.git/diff/test/cache_logging.c?h=architecture_docs&id=d7b40604ef43c0617ba93369983657d77d9e976a'>diffstats
path: root/test/cache_logging.c
blob: 448e12b1fccfde1241493fc0011c662a9c2ddb99 (plain) 
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* Purpose: Tests the metadata cache logging framework */

#include "h5test.h"

#define LOG_LOCATION "cache_logging.out"
#define FILE_NAME    "cache_logging"

#define N_GROUPS 100

/*-------------------------------------------------------------------------
 * Function:    test_logging_api
 *
 * Purpose:     Tests the API calls that affect mdc logging
 *
 * Return:      Success:        0
 *              Failure:        -1
 *-------------------------------------------------------------------------
 */
static herr_t
test_logging_api(void)
{
    hid_t   fapl = -1;
    hbool_t is_enabled;
    hbool_t is_enabled_out;
    hbool_t start_on_access;
    hbool_t start_on_access_out;
    char *  location = NULL;
    size_t  size;

    hid_t   fid = -1;
    hid_t   gid = -1;
    hbool_t is_currently_logging;
    char    group_name[12];
    char    filename[1024];
    int     i;

    TESTING("metadata cache log api calls");

    fapl = h5_fileaccess();
    h5_fixname(FILE_NAME, fapl, filename, sizeof filename);

    /* Set up metadata cache logging */
    is_enabled      = TRUE;
    start_on_access = FALSE;
    if (H5Pset_mdc_log_options(fapl, is_enabled, LOG_LOCATION, start_on_access) < 0)
        TEST_ERROR;

    /* Check to make sure that the property list getter returns the correct
     * location string buffer size;
     */
    is_enabled_out      = FALSE;
    start_on_access_out = TRUE;
    location            = NULL;
    size                = 999;
    if (H5Pget_mdc_log_options(fapl, &is_enabled_out, location, &size, &start_on_access_out) < 0)
        TEST_ERROR;
    if (size != HDstrlen(LOG_LOCATION) + 1)
        TEST_ERROR;

    /* Check to make sure that the property list getter works */
    if (NULL == (location = (char *)HDcalloc(size, sizeof(char))))
        TEST_ERROR;
    if (H5Pget_mdc_log_options(fapl, &is_enabled_out, location, &size, &start_on_access_out) < 0)
        TEST_ERROR;
    if ((is_enabled != is_enabled_out) || (start_on_access != start_on_access_out) ||
        HDstrcmp(LOG_LOCATION, location) != 0)
        TEST_ERROR;

    /* Create a file */
    if (H5Pset_libver_bounds(fapl, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
        TEST_ERROR;
    if ((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, fapl)) < 0)
        TEST_ERROR;
    if (H5Pclose(fapl) < 0)
        TEST_ERROR;

    /* Check to see if the logging flags were set correctly */
    is_enabled           = FALSE;
    is_currently_logging = TRUE;
    if ((H5Fget_mdc_logging_status(fid, &is_enabled, &is_currently_logging) < 0) || (is_enabled != TRUE) ||
        (is_currently_logging != FALSE))
        TEST_ERROR;

    /* Turn on logging and check flags */
    if (H5Fstart_mdc_logging(fid) < 0)
        TEST_ERROR;
    is_enabled           = FALSE;
    is_currently_logging = FALSE;
    if ((H5Fget_mdc_logging_status(fid, &is_enabled, &is_currently_logging) < 0) || (is_enabled != TRUE) ||
        (is_currently_logging != TRUE))
        TEST_ERROR;

    /* Perform some manipulations */
    for (i = 0; i < N_GROUPS; i++) {
        HDmemset(group_name, 0, sizeof(group_name));
        HDsnprintf(group_name, sizeof(group_name), "%d", i);
        if ((gid = H5Gcreate2(fid, group_name, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
            TEST_ERROR;
        if (H5Gclose(gid) < 0)
            TEST_ERROR;
    }

    /* Turn off logging and check flags */
    if (H5Fstop_mdc_logging(fid) < 0)
        TEST_ERROR;
    is_enabled           = FALSE;
    is_currently_logging = TRUE;
    if ((H5Fget_mdc_logging_status(fid, &is_enabled, &is_currently_logging) < 0) || (is_enabled != TRUE) ||
        (is_currently_logging != FALSE))
        TEST_ERROR;

    /* Clean up */
    HDfree(location);
    if (H5Fclose(fid) < 0)
        TEST_ERROR;

    PASSED();
    return 0;

error:
    return 1;
} /* test_logging_api() */

/*-------------------------------------------------------------------------
 * Function:    main
 *
 * Purpose:     Test basic cache logging operations
 *
 * Return:      Success:        zero
 *              Failure:        non-zero
 *
 *-------------------------------------------------------------------------
 */
int
main(void)
{
    int nerrors = 0;

    /* Reset library */
    h5_reset();

    HDprintf("Testing basic metadata cache logging functionality.\n");

    nerrors += test_logging_api();

    if (nerrors) {
        HDprintf("***** %d Metadata cache logging TEST%s FAILED! *****\n", nerrors, nerrors > 1 ? "S" : "");
        HDexit(EXIT_FAILURE);
    }

    HDprintf("All Metadata Cache Logging tests passed.\n");

    HDexit(EXIT_SUCCESS);
}
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