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8fa9daa174
hdf5/src/H5Tcommit.c
James Laird 8fa9daa174 [svn-r13143] Refactoring. 
Added can_share callback for OH messages.  This determines whether the
message is allowed to be shared in the heap (committed and immutable datatypes
can't be).
Fixed a bug in the dense attribute storage that tried to open the shared message
heap when it hadn't been created yet.
Made the test to extend shared dataspace messages a bit more robust.
Refactored the code the searches a shared message list index to be a little
more efficient.
A few other minor changes.

Tested on smirom, kagiso, Windows, and juniper.
2007-01-16 12:19:11 -05:00

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Module Info: This module contains the functionality for committing datatypes
* to a file for the H5T interface.
*/
#define H5T_PACKAGE /*suppress error about including H5Tpkg */
/* Interface initialization */
#define H5_INTERFACE_INIT_FUNC H5T_init_commit_interface
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5FLprivate.h" /* Free Lists */
#include "H5FOprivate.h" /* File objects */
#include "H5Iprivate.h" /* IDs */
#include "H5Lprivate.h" /* Links */
#include "H5Oprivate.h" /* Object headers */
#include "H5Pprivate.h" /* Property lists */
#include "H5Tpkg.h" /* Datatypes */
/* Static local functions */
static herr_t H5T_commit(H5F_t *file, H5T_t *type,
hid_t dxpl_id, hid_t tcpl_id, hid_t tapl_id);
static H5T_t *H5T_open_oid(H5G_loc_t *loc, hid_t dxpl_id);
/*--------------------------------------------------------------------------
NAME
H5T_init_commit_interface -- Initialize interface-specific information
USAGE
herr_t H5T_init_commit_interface()
RETURNS
Non-negative on success/Negative on failure
DESCRIPTION
Initializes any interface-specific data or routines. (Just calls
H5T_init_iterface currently).
--------------------------------------------------------------------------*/
static herr_t
H5T_init_commit_interface(void)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5T_init_commit_interface)
FUNC_LEAVE_NOAPI(H5T_init())
} /* H5T_init_commit_interface() */
/*-------------------------------------------------------------------------
* Function: H5Tcommit
*
* Purpose: Save a transient datatype to a file and turn the type handle
* into a named, immutable type.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Monday, June 1, 1998
*
*-------------------------------------------------------------------------
*/
herr_t
H5Tcommit(hid_t loc_id, const char *name, hid_t type_id)
{
H5G_loc_t loc;
H5G_loc_t type_loc;
H5G_loc_t insertion_loc; /* Loc of group in which to create object */
H5G_name_t insert_path; /* Path of group in which to create object */
H5O_loc_t insert_oloc; /* oloc of group in which to create object */
hbool_t insert_loc_valid = FALSE; /* Is insertion_loc valid? */
H5F_t *file = NULL;
H5T_t *type = NULL;
hbool_t uncommit = FALSE; /* TRUE if H5T_commit needs to be undone */
H5T_state_t old_state = H5T_STATE_TRANSIENT; /* The state of the datatype before H5T_commit. */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_API(H5Tcommit, FAIL)
H5TRACE3("e", "isi", loc_id, name, type_id);
/* Check arguments */
if(H5G_loc(loc_id, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
if(!name || !*name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")
if(NULL == (type = H5I_object_verify(type_id, H5I_DATATYPE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
/* What file is the datatype being added to? */
insertion_loc.path = &insert_path;
insertion_loc.oloc = &insert_oloc;
H5G_loc_reset(&insertion_loc);
if(H5G_insertion_loc(&loc, name, &insertion_loc, H5AC_dxpl_id) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to locate insertion point")
insert_loc_valid = TRUE;
file = insertion_loc.oloc->file;
/* Record the type's state so that we can revert to it if linking fails */
old_state = type->shared->state;
/* Write the type to disk */
if(H5T_commit(file, type, H5AC_dxpl_id, H5P_DATATYPE_CREATE_DEFAULT, H5P_DEFAULT) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to commit datatype")
/* Get the group location for the newly committed datatype */
if(H5G_loc(type_id, &type_loc) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "unable to get committed datatype's location")
/* Link the type into the group hierarchy */
if(H5L_link(&loc, name, &type_loc, H5P_DEFAULT, H5P_DEFAULT, H5AC_dxpl_id) < 0) {
uncommit = TRUE; /* Linking failed, and we need to undo H5T_commit. */
HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create link to type")
} /* end if */
done:
if(insert_loc_valid)
if(H5G_loc_free(&insertion_loc) < 0)
HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "unable to free location")
/* If the datatype was committed but couldn't be linked, we need to return it to the state it was in
* before it was committed. */
if(TRUE == uncommit) {
if(type->shared->state == H5T_STATE_OPEN && type->sh_loc.flags & H5O_COMMITTED_FLAG) {
/* Remove the datatype from the list of opened objects in the file */
if(H5FO_top_decr(type->sh_loc.u.oloc.file, type->sh_loc.u.oloc.addr) < 0)
HDONE_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "can't decrement count for object")
if(H5FO_delete(type->sh_loc.u.oloc.file, H5AC_dxpl_id, type->sh_loc.u.oloc.addr) < 0)
HDONE_ERROR(H5E_DATASET, H5E_CANTRELEASE, FAIL, "can't remove dataset from list of open objects")
if(H5O_close(&(type->sh_loc.u.oloc)) < 0)
HDONE_ERROR(H5E_DATATYPE, H5E_CLOSEERROR, FAIL, "unable to release object header")
if(H5O_delete(file, H5AC_dxpl_id, type->sh_loc.u.oloc.addr) < 0)
HDONE_ERROR(H5E_DATATYPE, H5E_CANTDELETE, FAIL, "unable to delete object header")
/* Mark datatype as being back in memory */
if(H5T_set_loc(type, file, H5T_LOC_MEMORY))
HDONE_ERROR(H5E_DATATYPE, H5E_CANTDELETE, FAIL, "unable to return datatype to memory")
type->sh_loc.flags = H5O_NOT_SHARED;
type->shared->state = old_state;
} /* end if */
} /* end if */
FUNC_LEAVE_API(ret_value)
} /* end H5Tcommit() */
/*-------------------------------------------------------------------------
* Function: H5Tcommit_expand
*
* Purpose: Save a transient datatype to a file and turn the type handle
* into a "named", immutable type.
*
* The resulting ID should be linked into the file with
* H5Llink or it will be deleted when closed.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Peter Cao
* May 17, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5Tcommit_expand(hid_t loc_id, hid_t type_id, hid_t tcpl_id, hid_t tapl_id)
{
H5G_loc_t loc;
H5T_t *type = NULL;
herr_t ret_value=SUCCEED; /* Return value */
FUNC_ENTER_API(H5Tcommit_expand, FAIL)
H5TRACE4("e", "iiii", loc_id, type_id, tcpl_id, tapl_id);
/* Check arguments */
if(H5G_loc (loc_id, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
if(NULL == (type = H5I_object_verify(type_id, H5I_DATATYPE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
/* Get correct property list */
if(H5P_DEFAULT == tcpl_id)
tcpl_id = H5P_DATATYPE_CREATE_DEFAULT;
else
if(TRUE != H5P_isa_class(tcpl_id, H5P_DATATYPE_CREATE))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not datatype create property list")
/* Get correct property list */
if(H5P_DEFAULT == tapl_id)
tapl_id = H5P_DATATYPE_ACCESS_DEFAULT;
else
if(TRUE != H5P_isa_class(tapl_id, H5P_DATATYPE_ACCESS))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not datatype access property list")
/* Commit the type */
if(H5T_commit(loc.oloc->file, type, H5AC_dxpl_id, tcpl_id, tapl_id) < 0)
HGOTO_ERROR (H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to commit datatype")
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Tcommit_expand() */
/*-------------------------------------------------------------------------
* Function: H5T_commit
*
* Purpose: Commit a type, giving it a name and causing it to become
* immutable.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Monday, June 1, 1998
*
*-------------------------------------------------------------------------
*/
static herr_t
H5T_commit(H5F_t *file, H5T_t *type, hid_t dxpl_id, hid_t tcpl_id, hid_t UNUSED tapl_id)
{
H5O_loc_t temp_oloc; /* Temporary object header location */
H5G_name_t temp_path; /* Temporary path */
hbool_t loc_init=FALSE; /* Have temp_oloc and temp_path been initialized? */
size_t dtype_size; /* Size of the datatype message */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5T_commit)
HDassert(file);
HDassert(type);
HDassert(tcpl_id != H5P_DEFAULT);
#ifdef LATER
HDassert(tapl_id != H5P_DEFAULT);
#endif /* LATER */
/*
* Check arguments. We cannot commit an immutable type because H5Tclose()
* normally fails on such types (try H5Tclose(H5T_NATIVE_INT)) but closing
* a named type should always succeed.
*/
if(H5T_STATE_NAMED == type->shared->state || H5T_STATE_OPEN == type->shared->state)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "datatype is already committed")
if(H5T_STATE_IMMUTABLE == type->shared->state)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "datatype is immutable")
/* Check for a "sensible" datatype to store on disk */
if(H5T_is_sensible(type) <= 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "datatype is not sensible")
/* Mark datatype as being on disk now. This step changes the size of datatype as
* stored on disk. */
if(H5T_set_loc(type, file, H5T_LOC_DISK) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "cannot mark datatype on disk")
/* Reset datatype location and path */
if(H5O_loc_reset(&temp_oloc) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRESET, FAIL, "unable to initialize location")
if(H5G_name_reset(&temp_path) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRESET, FAIL, "unable to initialize path")
loc_init = TRUE;
/* Calculate message size infomation, for creating object header */
dtype_size = H5O_msg_mesg_size(file, H5O_DTYPE_ID, type, (size_t)0);
HDassert(dtype_size);
/*
* Create the object header and open it for write access. Insert the data
* type message and then give the object header a name.
*/
if(H5O_create(file, dxpl_id, dtype_size, tcpl_id, &temp_oloc) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to create datatype object header")
if(H5O_msg_create(&temp_oloc, H5O_DTYPE_ID, H5O_MSG_FLAG_CONSTANT | H5O_MSG_FLAG_DONTSHARE, H5O_UPDATE_TIME, type, dxpl_id) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to update type header message")
/* Copy the new object header's location into the datatype, taking ownership of it */
if(H5O_loc_copy(&(type->sh_loc.u.oloc), &temp_oloc, H5_COPY_SHALLOW) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy datatype location")
if(H5G_name_copy(&(type->path), &temp_path, H5_COPY_SHALLOW) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to copy datatype location")
loc_init = FALSE;
/* Set the shared info fields */
type->sh_loc.flags = H5O_COMMITTED_FLAG;
type->shared->state = H5T_STATE_OPEN;
type->shared->fo_count = 1;
/* Add datatype to the list of open objects in the file */
if(H5FO_top_incr(type->sh_loc.u.oloc.file, type->sh_loc.u.oloc.addr) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINC, FAIL, "can't incr object ref. count")
if(H5FO_insert(type->sh_loc.u.oloc.file, type->sh_loc.u.oloc.addr, type->shared, TRUE) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINSERT, FAIL, "can't insert datatype into list of open objects")
/* Mark datatype as being on memory now. Since this datatype may still be used in memory
* after committed to disk, change its size back as in memory. */
if(H5T_set_loc(type, NULL, H5T_LOC_MEMORY) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "cannot mark datatype in memory")
done:
if(ret_value < 0) {
if(loc_init)
{
H5O_loc_free(&temp_oloc);
H5G_name_free(&temp_path);
}
if((type->shared->state == H5T_STATE_TRANSIENT || type->shared->state == H5T_STATE_RDONLY) && (type->sh_loc.flags & H5O_COMMITTED_FLAG)) {
if(H5O_close(&(type->sh_loc.u.oloc)) < 0)
HDONE_ERROR(H5E_DATATYPE, H5E_CLOSEERROR, FAIL, "unable to release object header")
if(H5O_delete(file, dxpl_id, type->sh_loc.u.oloc.addr) < 0)
HDONE_ERROR(H5E_DATATYPE, H5E_CANTDELETE, FAIL, "unable to delete object header")
type->sh_loc.flags = H5O_NOT_SHARED;
} /* end if */
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* H5T_commit() */
/*-------------------------------------------------------------------------
* Function: H5Tcommitted
*
* Purpose: Determines if a datatype is committed or not.
*
* Return: Success: TRUE if committed, FALSE otherwise.
*
* Failure: Negative
*
* Programmer: Robb Matzke
* Thursday, June 4, 1998
*
*-------------------------------------------------------------------------
*/
htri_t
H5Tcommitted(hid_t type_id)
{
H5T_t *type = NULL;
htri_t ret_value; /* Return value */
FUNC_ENTER_API(H5Tcommitted, FAIL)
H5TRACE1("t", "i", type_id);
/* Check arguments */
if(NULL == (type = H5I_object_verify(type_id,H5I_DATATYPE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
/* Set return value */
ret_value = H5T_committed(type);
done:
FUNC_LEAVE_API(ret_value)
} /* end H5Tcommitted() */
/*-------------------------------------------------------------------------
* Function: H5T_committed
*
* Purpose: Determines if a datatype is committed or not.
*
* Return: Success: TRUE if committed, FALSE otherwise.
*
* Programmer: Quincey Koziol
* Wednesday, September 24, 2003
*
*-------------------------------------------------------------------------
*/
htri_t
H5T_committed(const H5T_t *type)
{
/* Use no-init for efficiency */
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5T_committed)
HDassert(type);
FUNC_LEAVE_NOAPI(H5T_STATE_OPEN == type->shared->state || H5T_STATE_NAMED == type->shared->state)
} /* end H5T_committed() */
/*-------------------------------------------------------------------------
* Function: H5T_link
*
* Purpose: Adjust the link count for an object header by adding
* ADJUST to the link count.
*
* Return: Success: New link count
*
* Failure: Negative
*
* Programmer: Quincey Koziol
* Friday, September 26, 2003
*
*-------------------------------------------------------------------------
*/
int
H5T_link(const H5T_t *type, int adjust, hid_t dxpl_id)
{
int ret_value; /* Return value */
FUNC_ENTER_NOAPI(H5T_link, FAIL)
HDassert(type);
HDassert(type->sh_loc.flags & H5O_COMMITTED_FLAG);
/* Adjust the link count on the named datatype */
if((ret_value = H5O_link(&(type->sh_loc.u.oloc), adjust, dxpl_id)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_LINKCOUNT, FAIL, "unable to adjust named datatype link count")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5T_link() */
/*-------------------------------------------------------------------------
* Function: H5Topen
*
* Purpose: Opens a named datatype.
*
* Return: Success: Object ID of the named datatype.
*
* Failure: Negative
*
* Programmer: Robb Matzke
* Monday, June 1, 1998
*
*-------------------------------------------------------------------------
*/
hid_t
H5Topen(hid_t loc_id, const char *name)
{
H5T_t *type = NULL;
H5G_loc_t loc;
H5G_name_t path; /* Datatype group hier. path */
H5O_loc_t oloc; /* Datatype object location */
H5O_type_t obj_type; /* Type of object at location */
H5G_loc_t type_loc; /* Group object for datatype */
hbool_t obj_found = FALSE; /* Object at 'name' found */
hid_t dxpl_id = H5AC_dxpl_id; /* dxpl to use to open datatype */
hid_t ret_value = FAIL;
FUNC_ENTER_API(H5Topen, FAIL)
H5TRACE2("i", "is", loc_id, name);
/* Check args */
if(H5G_loc(loc_id, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
if(!name || !*name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")
/* Set up datatype location to fill in */
type_loc.oloc = &oloc;
type_loc.path = &path;
H5G_loc_reset(&type_loc);
/*
* Find the named datatype object header and read the datatype message
* from it.
*/
if(H5G_loc_find(&loc, name, &type_loc/*out*/, H5P_DEFAULT, dxpl_id) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_NOTFOUND, FAIL, "not found")
obj_found = TRUE;
/* Check that the object found is the correct type */
if(H5O_obj_type(&oloc, &obj_type, dxpl_id) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't get object type")
if(obj_type != H5O_TYPE_NAMED_DATATYPE)
HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, FAIL, "not a named datatype")
/* Open it */
if((type = H5T_open(&type_loc, dxpl_id)) == NULL)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, FAIL, "unable to open named datatype")
/* Register the type and return the ID */
if((ret_value = H5I_register(H5I_DATATYPE, type)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register named datatype")
done:
if(ret_value < 0) {
if(type != NULL)
H5T_close(type);
else {
if(obj_found && H5F_addr_defined(type_loc.oloc->addr))
H5G_loc_free(&type_loc);
} /* end else */
} /* end if */
FUNC_LEAVE_API(ret_value)
} /* end H5Topen() */
/*-------------------------------------------------------------------------
* Function: H5Topen_expand
*
* Purpose: Opens a named datatype using a Datatype Access Property
* List.
*
* Return: Success: Object ID of the named datatype.
* Failure: Negative
*
* Programmer: James Laird
* Thursday July 27, 2006
*
*-------------------------------------------------------------------------
*/
hid_t
H5Topen_expand(hid_t loc_id, const char *name, hid_t tapl_id)
{
H5T_t *type = NULL;
H5G_loc_t loc;
H5G_name_t path; /* Datatype group hier. path */
H5O_loc_t oloc; /* Datatype object location */
H5O_type_t obj_type; /* Type of object at location */
H5G_loc_t type_loc; /* Group object for datatype */
hbool_t obj_found = FALSE; /* Object at 'name' found */
hid_t dxpl_id = H5AC_dxpl_id; /* dxpl to use to open datatype */
hid_t ret_value = FAIL;
FUNC_ENTER_API(H5Topen_expand, FAIL)
H5TRACE3("i", "isi", loc_id, name, tapl_id);
/* Check args */
if(H5G_loc(loc_id, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
if(!name || !*name)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name")
/* Get correct property list */
if(H5P_DEFAULT == tapl_id)
tapl_id = H5P_DATATYPE_ACCESS_DEFAULT;
else
if(TRUE != H5P_isa_class(tapl_id, H5P_DATATYPE_ACCESS))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not datatype access property list")
/* Set up datatype location to fill in */
type_loc.oloc = &oloc;
type_loc.path = &path;
H5G_loc_reset(&type_loc);
/*
* Find the named datatype object header and read the datatype message
* from it.
*/
if(H5G_loc_find(&loc, name, &type_loc/*out*/, tapl_id, dxpl_id) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_NOTFOUND, FAIL, "not found")
obj_found = TRUE;
/* Check that the object found is the correct type */
if(H5O_obj_type(&oloc, &obj_type, dxpl_id) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't get object type")
if(obj_type != H5O_TYPE_NAMED_DATATYPE)
HGOTO_ERROR(H5E_DATATYPE, H5E_BADTYPE, FAIL, "not a named datatype")
/* Open it */
if((type = H5T_open(&type_loc, dxpl_id)) == NULL)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, FAIL, "unable to open named datatype")
/* Register the type and return the ID */
if((ret_value = H5I_register(H5I_DATATYPE, type)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register named datatype")
done:
if(ret_value < 0) {
if(type != NULL)
H5T_close(type);
else {
if(obj_found && H5F_addr_defined(type_loc.oloc->addr))
H5G_loc_free(&type_loc);
} /* end else */
} /* end if */
FUNC_LEAVE_API(ret_value)
}
/*-------------------------------------------------------------------------
* Function: H5Tget_create_plist
*
* Purpose: Returns a copy of the datatype creation property list.
*
* Return: Success: ID for a copy of the datatype creation
* property list. The property list ID should be
* released by calling H5Pclose().
*
* Failure: FAIL
*
* Programmer: Quincey Koziol
* Tuesday, November 28, 2006
*
*-------------------------------------------------------------------------
*/
hid_t
H5Tget_create_plist(hid_t dtype_id)
{
H5T_t *type; /* Datatype object for ID */
H5P_genplist_t *tcpl_plist; /* Existing datatype creation propertty list */
hid_t new_tcpl_id = FAIL; /* New datatype creation property list */
herr_t status; /* Generic status value */
hid_t ret_value; /* Return value */
FUNC_ENTER_API(H5Tget_create_plist, FAIL)
H5TRACE1("i", "i", dtype_id);
/* Check arguments */
if(NULL == (type = H5I_object_verify(dtype_id, H5I_DATATYPE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype")
/* Copy the default datatype creation property list */
if(NULL == (tcpl_plist = H5I_object(H5P_LST_DATATYPE_CREATE_g)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get default creation property list")
if((new_tcpl_id = H5P_copy_plist(tcpl_plist)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "unable to copy the creation property list")
/* Check if the datatype is committed */
if((status = H5T_committed(type)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't check whether datatype is committed")
/* Retrieve further information, if the datatype is committed */
if(status > 0) {
H5P_genplist_t *new_plist; /* New datatype creation property list */
H5O_loc_t *type_oloc; /* Object location for committed datatype */
/* Get property list object for new TCPL */
if(NULL == (new_plist = H5I_object(new_tcpl_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list")
/* Get the datatype's object location */
if(NULL == (type_oloc = H5T_oloc(type)))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "unable to get object location of datatype")
/* Retrieve any object creation properties */
if(H5O_get_create_plist(type_oloc, H5AC_ind_dxpl_id, new_plist) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't get object creation info")
} /* end if */
/* Set the return value */
ret_value = new_tcpl_id;
done:
if(ret_value < 0) {
if(new_tcpl_id > 0)
(void)H5I_dec_ref(new_tcpl_id);
} /* end if */
FUNC_LEAVE_API(ret_value)
} /* end H5Tget_create_plist() */
/*-------------------------------------------------------------------------
* Function: H5T_open
*
* Purpose: Open a named datatype.
*
* Return: Success: Ptr to a new datatype.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Monday, June 1, 1998
*
*-------------------------------------------------------------------------
*/
H5T_t *
H5T_open(H5G_loc_t *loc, hid_t dxpl_id)
{
H5T_shared_t *shared_fo = NULL;
H5T_t *dt = NULL;
H5T_t *ret_value;
FUNC_ENTER_NOAPI(H5T_open, NULL)
HDassert(loc);
/* Check if datatype was already open */
if((shared_fo = H5FO_opened(loc->oloc->file, loc->oloc->addr)) == NULL) {
/* Clear any errors from H5FO_opened() */
H5E_clear_stack(NULL);
/* Open the datatype object */
if((dt = H5T_open_oid(loc, dxpl_id)) == NULL)
HGOTO_ERROR(H5E_DATATYPE, H5E_NOTFOUND, NULL, "not found")
/* Add the datatype to the list of opened objects in the file */
if(H5FO_insert(dt->sh_loc.u.oloc.file, dt->sh_loc.u.oloc.addr, dt->shared, FALSE) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINSERT, NULL, "can't insert datatype into list of open objects")
/* Increment object count for the object in the top file */
if(H5FO_top_incr(dt->sh_loc.u.oloc.file, dt->sh_loc.u.oloc.addr) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINC, NULL, "can't increment object count")
/* Mark any datatypes as being in memory now */
if(H5T_set_loc(dt, NULL, H5T_LOC_MEMORY) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "invalid datatype location")
dt->shared->fo_count = 1;
} /* end if */
else {
if(NULL == (dt = H5FL_MALLOC(H5T_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "can't allocate space for datatype")
#if defined(H5_USING_PURIFY) || !defined(NDEBUG)
/* Clear object location */
if(H5O_loc_reset(&(dt->sh_loc.u.oloc)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to reset location")
/* Clear path name */
if(H5G_name_reset(&(dt->path)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to reset path")
#endif /* H5_USING_PURIFY */
/* Shallow copy (take ownership) of the object location object */
if(H5O_loc_copy(&(dt->sh_loc.u.oloc), loc->oloc, H5_COPY_SHALLOW) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy object location")
/* Shallow copy (take ownership) of the group hier. path */
if(H5G_name_copy(&(dt->path), loc->path, H5_COPY_SHALLOW) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy path")
dt->shared = shared_fo;
dt->sh_loc.flags |= H5O_COMMITTED_FLAG;
shared_fo->fo_count++;
/* Check if the object has been opened through the top file yet */
if(H5FO_top_count(dt->sh_loc.u.oloc.file, dt->sh_loc.u.oloc.addr) == 0) {
/* Open the object through this top file */
if(H5O_open(&(dt->sh_loc.u.oloc)) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to open object header")
} /* end if */
/* Increment object count for the object in the top file */
if(H5FO_top_incr(dt->sh_loc.u.oloc.file, dt->sh_loc.u.oloc.addr) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINC, NULL, "can't increment object count")
} /* end else */
ret_value = dt;
done:
if(ret_value == NULL) {
if(dt) {
if(shared_fo == NULL) /* Need to free shared fo */
H5FL_FREE(H5T_shared_t, dt->shared);
H5O_loc_free(&(dt->sh_loc.u.oloc));
H5G_name_free(&(dt->path));
H5FL_FREE(H5T_t, dt);
} /* end if */
if(shared_fo)
shared_fo->fo_count--;
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5T_open() */
/*-------------------------------------------------------------------------
* Function: H5T_open_oid
*
* Purpose: Open a named datatype.
*
* Return: Success: Ptr to a new datatype.
*
* Failure: NULL
*
* Programmer: Quincey Koziol
* Wednesday, March 17, 1999
*
*-------------------------------------------------------------------------
*/
static H5T_t *
H5T_open_oid(H5G_loc_t *loc, hid_t dxpl_id)
{
H5T_t *dt = NULL;
H5T_t *ret_value;
FUNC_ENTER_NOAPI_NOINIT(H5T_open_oid)
HDassert(loc);
if(H5O_open(loc->oloc) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTOPENOBJ, NULL, "unable to open named datatype")
if(NULL == (dt = H5O_msg_read(loc->oloc, H5O_DTYPE_ID, 0, NULL, dxpl_id)))
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "unable to load type message from object header")
/* Mark the type as named and open */
dt->shared->state = H5T_STATE_OPEN;
dt->sh_loc.flags |= H5O_COMMITTED_FLAG;
/* Shallow copy (take ownership) of the object location object */
if(H5O_loc_copy(&(dt->sh_loc.u.oloc), loc->oloc, H5_COPY_SHALLOW) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy object location")
/* Shallow copy (take ownership) of the group hier. path */
if(H5G_name_copy(&(dt->path), loc->path, H5_COPY_SHALLOW) < 0)
HGOTO_ERROR(H5E_DATATYPE, H5E_CANTCOPY, NULL, "can't copy path")
/* Set return value */
ret_value = dt;
done:
if(ret_value == NULL) {
if(dt == NULL)
H5O_close(loc->oloc);
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5T_open_oid() */
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