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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 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 *
* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5G.c
* Jul 18 1997
* Robb Matzke <matzke@llnl.gov>
*
* Purpose: Symbol table functions. The functions that begin with
* `H5G_stab_' don't understand the naming system; they operate
* on a single symbol table at a time.
*
* The functions that begin with `H5G_node_' operate on the leaf
* nodes of a symbol table B-tree. They should be defined in
* the H5Gnode.c file.
*
* The remaining functions know how to traverse the group
* directed graph.
*
* Names: Object names are a slash-separated list of components. If
* the name begins with a slash then it's absolute, otherwise
* it's relative ("/foo/bar" is absolute while "foo/bar" is
* relative). Multiple consecutive slashes are treated as
* single slashes and trailing slashes are ignored. The special
* case `/' is the root group. Every file has a root group.
*
* API functions that look up names take a location ID and a
* name. The location ID can be a file ID or a group ID and the
* name can be relative or absolute.
*
* +--------------+----------- +--------------------------------+
* | Location ID | Name | Meaning |
* +--------------+------------+--------------------------------+
* | File ID | "/foo/bar" | Find `foo' within `bar' within |
* | | | the root group of the specified|
* | | | file. |
* +--------------+------------+--------------------------------+
* | File ID | "foo/bar" | Find `foo' within `bar' within |
* | | | the root group of the specified|
* | | | file. |
* +--------------+------------+--------------------------------+
* | File ID | "/" | The root group of the specified|
* | | | file. |
* +--------------+------------+--------------------------------+
* | File ID | "." | The root group of the specified|
* | | | the specified file. |
* +--------------+------------+--------------------------------+
* | Group ID | "/foo/bar" | Find `foo' within `bar' within |
* | | | the root group of the file |
* | | | containing the specified group.|
* +--------------+------------+--------------------------------+
* | Group ID | "foo/bar" | File `foo' within `bar' within |
* | | | the specified group. |
* +--------------+------------+--------------------------------+
* | Group ID | "/" | The root group of the file |
* | | | containing the specified group.|
* +--------------+------------+--------------------------------+
* | Group ID | "." | The specified group. |
* +--------------+------------+--------------------------------+
*
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Gmodule.h" /* This source code file is part of the H5G module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5Eprivate.h" /* Error handling */
#include "H5ESprivate.h" /* Event Stacks */
#include "H5Gpkg.h" /* Groups */
#include "H5Iprivate.h" /* IDs */
#include "H5MMprivate.h" /* Memory management */
#include "H5Pprivate.h" /* Property lists */
#include "H5VLprivate.h" /* VOL plugins */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/* Package initialization variable */
hbool_t H5_PKG_INIT_VAR = FALSE;
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Group ID class */
static const H5I_class_t H5I_GROUP_CLS[1] = {{
H5I_GROUP, /* ID class value */
0, /* Class flags */
0, /* # of reserved IDs for class */
(H5I_free_t)H5G_close_group /* Callback routine for closing objects of this class */
}};
/* Flag indicating "top" of interface has been initialized */
static hbool_t H5G_top_package_initialize_s = FALSE;
/*-------------------------------------------------------------------------
* Function: H5G_init
*
* Purpose: Initialize the interface from some other package.
*
* Return: Success: non-negative
* Failure: negative
*
* Programmer: Mohamad Chaarawi
* July 2013
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_init(void)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/* FUNC_ENTER() does all the work */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_init() */
/*-------------------------------------------------------------------------
* Function: H5G__init_package
*
* Purpose: Initializes the H5G interface.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Monday, January 5, 1998
*
* Notes: The group creation properties are registered in the property
* list interface initialization routine (H5P_init_package)
* so that the file creation property class can inherit from it
* correctly. (Which allows the file creation property list to
* control the group creation properties of the root group of
* a file) QAK - 24/10/2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G__init_package(void)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Initialize the atom group for the group IDs */
if(H5I_register_type(H5I_GROUP_CLS) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to initialize interface")
/* Mark "top" of interface as initialized, too */
H5G_top_package_initialize_s = TRUE;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G__init_package() */
/*-------------------------------------------------------------------------
* Function: H5G_top_term_package
*
* Purpose: Close the "top" of the interface, releasing IDs, etc.
*
* Return: Success: Positive if anything is done that might
* affect other interfaces; zero otherwise.
* Failure: Negative.
*
* Programmer: Quincey Koziol
* Sunday, September 13, 2015
*
*-------------------------------------------------------------------------
*/
int
H5G_top_term_package(void)
{
int n = 0;
FUNC_ENTER_NOAPI_NOINIT_NOERR
if(H5G_top_package_initialize_s) {
if(H5I_nmembers(H5I_GROUP) > 0) {
(void)H5I_clear_type(H5I_GROUP, FALSE, FALSE);
n++; /*H5I*/
} /* end if */
/* Mark closed */
if(0 == n)
H5G_top_package_initialize_s = FALSE;
} /* end if */
FUNC_LEAVE_NOAPI(n)
} /* end H5G_top_term_package() */
/*-------------------------------------------------------------------------
* Function: H5G_term_package
*
* Purpose: Terminates the H5G interface
*
* Note: Finishes shutting down the interface, after
* H5G_top_term_package() is called
*
* Return: Success: Positive if anything is done that might
* affect other interfaces; zero otherwise.
* Failure: Negative.
*
* Programmer: Robb Matzke
* Monday, January 5, 1998
*
*-------------------------------------------------------------------------
*/
int
H5G_term_package(void)
{
int n = 0;
FUNC_ENTER_NOAPI_NOINIT_NOERR
if(H5_PKG_INIT_VAR) {
/* Sanity checks */
HDassert(0 == H5I_nmembers(H5I_GROUP));
HDassert(FALSE == H5G_top_package_initialize_s);
/* Destroy the group object id group */
n += (H5I_dec_type_ref(H5I_GROUP) > 0);
/* Mark closed */
if(0 == n)
H5_PKG_INIT_VAR = FALSE;
} /* end if */
FUNC_LEAVE_NOAPI(n)
} /* end H5G_term_package() */
/*-------------------------------------------------------------------------
* Function: H5Gcreate2
*
* Purpose: Creates a new group relative to LOC_ID, giving it the
* specified creation property list GCPL_ID and access
* property list GAPL_ID. The link to the new group is
* created with the LCPL_ID.
*
* Usage: H5Gcreate2(loc_id, char *name, lcpl_id, gcpl_id, gapl_id)
* hid_t loc_id; IN: File or group identifier
* const char *name; IN: Absolute or relative name of the new group
* hid_t lcpl_id; IN: Property list for link creation
* hid_t gcpl_id; IN: Property list for group creation
* hid_t gapl_id; IN: Property list for group access
*
* Return: Success: The object ID of a new, empty group open for
* writing. Call H5Gclose() when finished with
* the group.
*
* Failure: FAIL
*
* Programmer: Quincey Koziol
* April 5, 2007
*
*-------------------------------------------------------------------------
*/
hid_t
H5Gcreate2(hid_t loc_id, const char *name, hid_t lcpl_id, hid_t gcpl_id, hid_t gapl_id)
{
void *grp = NULL; /* group token from VOL plugin */
H5VL_object_t *obj = NULL; /* object token of loc_id */
H5VL_loc_params_t loc_params;
H5P_genplist_t *plist; /* Property list pointer */
hid_t ret_value; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE5("i", "i*siii", loc_id, name, lcpl_id, gcpl_id, gapl_id);
/* Check arguments */
if(!name || !*name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")
/* Get correct property list */
if(H5P_DEFAULT == lcpl_id)
lcpl_id = H5P_LINK_CREATE_DEFAULT;
else
if(TRUE != H5P_isa_class(lcpl_id, H5P_LINK_CREATE))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link creation property list")
/* Check group creation property list */
if(H5P_DEFAULT == gcpl_id)
gcpl_id = H5P_GROUP_CREATE_DEFAULT;
else
if(TRUE != H5P_isa_class(gcpl_id, H5P_GROUP_CREATE))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not group create property list")
/* Check the group access property list */
if(H5P_DEFAULT == gapl_id)
gapl_id = H5P_GROUP_ACCESS_DEFAULT;
else
if(TRUE != H5P_isa_class(gapl_id, H5P_GROUP_ACCESS))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not group access property list")
/* Get the plist structure */
if(NULL == (plist = (H5P_genplist_t *)H5I_object(gcpl_id)))
HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID")
if(H5P_set(plist, H5VL_PROP_GRP_LCPL_ID, &lcpl_id) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't set property value for lcpl id")
loc_params.type = H5VL_OBJECT_BY_SELF;
loc_params.obj_type = H5I_get_type(loc_id);
/* get the location object */
if(NULL == (obj = (H5VL_object_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
/* Create the group through the VOL */
if(NULL == (grp = H5VL_group_create(obj->vol_obj, loc_params, obj->vol_info->vol_cls, name,
gcpl_id, gapl_id, H5AC_dxpl_id, H5_REQUEST_NULL)))
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create group")
/* Get an atom for the group */
if((ret_value = H5VL_register_id(H5I_GROUP, grp, obj->vol_info, TRUE)) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to atomize group handle")
done:
if (ret_value < 0 && grp)
if(H5VL_group_close (grp, obj->vol_info->vol_cls, H5AC_dxpl_id, H5_REQUEST_NULL) < 0)
HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "unable to release group")
FUNC_LEAVE_API(ret_value)
} /* end H5Gcreate2() */
/*-------------------------------------------------------------------------
* Function: H5Gcreate_anon
*
* Purpose: Creates a new group relative to LOC_ID, giving it the
* specified creation property list GCPL_ID and access
* property list GAPL_ID.
*
* The resulting ID should be linked into the file with
* H5Olink or it will be deleted when closed.
*
* Given the default setting, H5Gcreate_anon() followed by
* H5Olink() will have the same function as H5Gcreate2().
*
* Usage: H5Gcreate_anon(loc_id, char *name, gcpl_id, gapl_id)
* hid_t loc_id; IN: File or group identifier
* const char *name; IN: Absolute or relative name of the new group
* hid_t gcpl_id; IN: Property list for group creation
* hid_t gapl_id; IN: Property list for group access
*
* Example: To create missing groups "A" and "B01" along the given path "/A/B01/grp"
* hid_t create_id = H5Pcreate(H5P_GROUP_CREATE);
* int status = H5Pset_create_intermediate_group(create_id, TRUE);
* hid_t gid = H5Gcreate_anon(file_id, "/A/B01/grp", create_id, H5P_DEFAULT);
*
* Return: Success: The object ID of a new, empty group open for
* writing. Call H5Gclose() when finished with
* the group.
*
* Failure: FAIL
*
* Programmer: Peter Cao
* May 08, 2005
*
*-------------------------------------------------------------------------
*/
hid_t
H5Gcreate_anon(hid_t loc_id, hid_t gcpl_id, hid_t gapl_id)
{
void *grp = NULL; /* group token from VOL plugin */
H5VL_object_t *obj = NULL; /* object token of loc_id */
H5VL_loc_params_t loc_params;
hid_t ret_value; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE3("i", "iii", loc_id, gcpl_id, gapl_id);
/* Check group creation property list */
if(H5P_DEFAULT == gcpl_id)
gcpl_id = H5P_GROUP_CREATE_DEFAULT;
else
if(TRUE != H5P_isa_class(gcpl_id, H5P_GROUP_CREATE))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not group create property list")
/* Check the group access property list */
if(H5P_DEFAULT == gapl_id)
gapl_id = H5P_GROUP_ACCESS_DEFAULT;
else
if(TRUE != H5P_isa_class(gapl_id, H5P_GROUP_ACCESS))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not group access property list")
loc_params.type = H5VL_OBJECT_BY_SELF;
loc_params.obj_type = H5I_get_type(loc_id);
/* get the location object */
if(NULL == (obj = (H5VL_object_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
/* Create the group through the VOL */
if(NULL == (grp = H5VL_group_create(obj->vol_obj, loc_params, obj->vol_info->vol_cls, NULL,
gcpl_id, gapl_id, H5AC_dxpl_id, H5_REQUEST_NULL)))
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create group")
/* Get an atom for the group */
if((ret_value = H5VL_register_id(H5I_GROUP, grp, obj->vol_info, TRUE)) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to atomize group handle")
done:
if (ret_value < 0 && grp)
if(H5VL_group_close (grp, obj->vol_info->vol_cls, H5AC_dxpl_id, H5_REQUEST_NULL) < 0)
HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "unable to release group")
FUNC_LEAVE_API(ret_value)
} /* end H5Gcreate_anon() */
/*-------------------------------------------------------------------------
* Function: H5Gopen2
*
* Purpose: Opens an existing group for modification. When finished,
* call H5Gclose() to close it and release resources.
*
* This function allows the user the pass in a Group Access
* Property List, which H5Gopen1() does not.
*
* Return: Success: Object ID of the group.
* Failure: FAIL
*
* Programmer: James Laird
* Thursday, July 27, 2006
*
*-------------------------------------------------------------------------
*/
hid_t
H5Gopen2(hid_t loc_id, const char *name, hid_t gapl_id)
{
void *grp = NULL; /* group token from VOL plugin */
H5VL_object_t *obj = NULL; /* object token of loc_id */
H5VL_loc_params_t loc_params;
hid_t ret_value; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE3("i", "i*si", loc_id, name, gapl_id);
/* Check args */
if(!name || !*name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")
/* Check the group access property list */
if(H5P_DEFAULT == gapl_id)
gapl_id = H5P_GROUP_ACCESS_DEFAULT;
else
if(TRUE != H5P_isa_class(gapl_id, H5P_GROUP_ACCESS))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not group access property list")
loc_params.type = H5VL_OBJECT_BY_SELF;
loc_params.obj_type = H5I_get_type(loc_id);
/* get the location object */
if(NULL == (obj = (H5VL_object_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
/* Create the group through the VOL */
if(NULL == (grp = H5VL_group_open(obj->vol_obj, loc_params, obj->vol_info->vol_cls,
name, gapl_id, H5AC_ind_dxpl_id, H5_REQUEST_NULL)))
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to open group")
/* Get an atom for the group */
if((ret_value = H5VL_register_id(H5I_GROUP, grp, obj->vol_info, TRUE)) < 0)
HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to atomize group handle")
done:
if (ret_value < 0 && grp)
if(H5VL_group_close (grp, obj->vol_info->vol_cls, H5AC_ind_dxpl_id, H5_REQUEST_NULL) < 0)
HDONE_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "unable to release group")
FUNC_LEAVE_API(ret_value)
} /* end H5Gopen2() */
/*-------------------------------------------------------------------------
* Function: H5Gget_create_plist
*
* Purpose: Returns a copy of the group creation property list.
*
* Return: Success: ID for a copy of the group creation
* property list. The property list ID should be
* released by calling H5Pclose().
*
* Failure: FAIL
*
* Programmer: Quincey Koziol
* Tuesday, October 25, 2005
*
*-------------------------------------------------------------------------
*/
hid_t
H5Gget_create_plist(hid_t grp_id)
{
H5VL_object_t *grp;
hid_t ret_value = FAIL;
FUNC_ENTER_API(FAIL)
H5TRACE1("i", "i", grp_id);
/* Check args */
if(NULL == (grp = (H5VL_object_t *)H5I_object_verify(grp_id, H5I_GROUP)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a group")
if(H5VL_group_get(grp->vol_obj, grp->vol_info->vol_cls, H5VL_GROUP_GET_GCPL,
H5AC_dxpl_id, H5_REQUEST_NULL, &ret_value) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "unable to get group creation properties")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Gget_create_plist() */
/*-------------------------------------------------------------------------
* Function: H5Gget_info
*
* Purpose: Retrieve information about a group.
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* November 27 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5Gget_info(hid_t loc_id, H5G_info_t *grp_info)
{
H5VL_object_t *obj;
H5I_type_t id_type; /* Type of ID */
H5VL_loc_params_t loc_params;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE2("e", "i*x", loc_id, grp_info);
/* Check args */
id_type = H5I_get_type(loc_id);
if(!(H5I_GROUP == id_type || H5I_FILE == id_type))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid argument")
if(!grp_info)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no info struct")
/* get the location object */
if(NULL == (obj = (H5VL_object_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
loc_params.type = H5VL_OBJECT_BY_SELF;
loc_params.obj_type = id_type;
/* Get the group info through the VOL using the location token */
if((ret_value = H5VL_group_get(obj->vol_obj, obj->vol_info->vol_cls, H5VL_GROUP_GET_INFO,
H5AC_ind_dxpl_id, H5_REQUEST_NULL, loc_params, grp_info)) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "unable to get group info")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Gget_info() */
/*-------------------------------------------------------------------------
* Function: H5Gget_info_by_name
*
* Purpose: Retrieve information about a group.
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* November 27 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5Gget_info_by_name(hid_t loc_id, const char *name, H5G_info_t *grp_info,
hid_t lapl_id)
{
H5VL_object_t *obj;
H5VL_loc_params_t loc_params;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE4("e", "i*s*xi", loc_id, name, grp_info, lapl_id);
/* Check args */
if(!name || !*name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")
if(!grp_info)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no info struct")
if(H5P_DEFAULT == lapl_id)
lapl_id = H5P_LINK_ACCESS_DEFAULT;
else
if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID")
loc_params.type = H5VL_OBJECT_BY_NAME;
loc_params.loc_data.loc_by_name.name = name;
loc_params.loc_data.loc_by_name.lapl_id = lapl_id;
loc_params.obj_type = H5I_get_type(loc_id);
/* get the location object */
if(NULL == (obj = (H5VL_object_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
/* Get the group info through the VOL using the location token */
if((ret_value = H5VL_group_get(obj->vol_obj, obj->vol_info->vol_cls, H5VL_GROUP_GET_INFO,
H5AC_ind_dxpl_id, H5_REQUEST_NULL, loc_params, grp_info)) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "unable to get group info")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Gget_info_by_name() */
/*-------------------------------------------------------------------------
* Function: H5Gget_info_by_idx
*
* Purpose: Retrieve information about a group, according to the order
* of an index.
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* November 27 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5Gget_info_by_idx(hid_t loc_id, const char *group_name, H5_index_t idx_type,
H5_iter_order_t order, hsize_t n, H5G_info_t *grp_info, hid_t lapl_id)
{
H5VL_object_t *obj;
H5VL_loc_params_t loc_params;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE7("e", "i*sIiIoh*xi", loc_id, group_name, idx_type, order, n, grp_info,
lapl_id);
/* Check args */
if(!group_name || !*group_name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified")
if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified")
if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified")
if(!grp_info)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no info struct")
if(H5P_DEFAULT == lapl_id)
lapl_id = H5P_LINK_ACCESS_DEFAULT;
else
if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID")
loc_params.type = H5VL_OBJECT_BY_IDX;
loc_params.loc_data.loc_by_idx.name = group_name;
loc_params.loc_data.loc_by_idx.idx_type = idx_type;
loc_params.loc_data.loc_by_idx.order = order;
loc_params.loc_data.loc_by_idx.n = n;
loc_params.loc_data.loc_by_idx.lapl_id = lapl_id;
loc_params.obj_type = H5I_get_type(loc_id);
/* get the location object */
if(NULL == (obj = (H5VL_object_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid location identifier")
/* Get the group info through the VOL using the location token */
if((ret_value = H5VL_group_get(obj->vol_obj, obj->vol_info->vol_cls,
H5VL_GROUP_GET_INFO, H5AC_ind_dxpl_id,
H5_REQUEST_NULL, loc_params, grp_info)) < 0)
HGOTO_ERROR(H5E_INTERNAL, H5E_CANTGET, FAIL, "unable to get group info")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Gget_info_by_idx() */
/*-------------------------------------------------------------------------
* Function: H5Gclose
*
* Purpose: Closes the specified group. The group ID will no longer be
* valid for accessing the group.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Wednesday, December 31, 1997
*
*-------------------------------------------------------------------------
*/
herr_t
H5Gclose(hid_t group_id)
{
H5VL_object_t *obj;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(FAIL)
H5TRACE1("e", "i", group_id);
/* Check args */
if(NULL == (obj = (H5VL_object_t *)H5I_object_verify(group_id, H5I_GROUP)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a group ID")
/* set the async request and dxpl IDs to be passed on to the VOL layer */
obj->close_estack_id = H5_EVENT_STACK_NULL;
obj->close_dxpl_id = H5AC_dxpl_id;
/*
* Decrement the counter on the group atom. It will be freed if the count
* reaches zero.
*/
if(H5I_dec_app_ref(group_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "unable to close group")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Gclose() */
/*-------------------------------------------------------------------------
* Function: H5G_close_group
*
* Purpose: Called when the ref count reaches zero on the group_id
*
* Return: Success: Non-negative
*
* Failure: Negative
*
* Programmer: Mohamad Chaarawi
* June 2012
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_close_group(void *_grp)
{
H5_priv_request_t *request = NULL; /* private request struct inserted in event queue */
void **req = NULL; /* pointer to plugin generate requests (Stays NULL if plugin does not support async */
H5VL_object_t *grp = (H5VL_object_t *)_grp;
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
if(grp->close_estack_id != H5_EVENT_STACK_NULL) {
/* create the private request */
if(NULL == (request = (H5_priv_request_t *)H5MM_calloc(sizeof(H5_priv_request_t))))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
req = &request->req;
request->vol_cls = grp->vol_info->vol_cls;
}
/* Close the group through the VOL*/
if((ret_value = H5VL_group_close(grp->vol_obj, grp->vol_info->vol_cls,
grp->close_dxpl_id, req)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CLOSEERROR, FAIL, "unable to close group")
if(request && *req)
if(H5ES_insert(grp->close_estack_id, request) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "failed to insert request in event stack")
/* free group */
if(H5VL_free_object(grp) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTDEC, FAIL, "unable to free VOL object")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_close_group() */
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