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-rw-r--r--src/H5Glink.c737
1 files changed, 155 insertions, 582 deletions
diff --git a/src/H5Glink.c b/src/H5Glink.c
index 17b8f0a..0600e97 100644
--- a/src/H5Glink.c
+++ b/src/H5Glink.c
@@ -15,90 +15,77 @@
/*-------------------------------------------------------------------------
*
* Created: H5Glink.c
- * Sep 5 2005
- * Quincey Koziol <koziol@ncsa.uiuc.edu>
+ * Nov 13 2006
+ * Quincey Koziol <koziol@hdfgroup.org>
*
- * Purpose: Functions for handling link messages.
+ * Purpose: Functions for handling links in groups.
*
*-------------------------------------------------------------------------
*/
+
+/****************/
+/* Module Setup */
+/****************/
+
#define H5G_PACKAGE /*suppress error about including H5Gpkg */
-/* Packages needed by this file... */
+/***********/
+/* Headers */
+/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Gpkg.h" /* Groups */
#include "H5HLprivate.h" /* Local Heaps */
-#include "H5Iprivate.h" /* IDs */
-#include "H5MMprivate.h" /* Memory management */
-
-/* Private typedefs */
-
-/* User data for link message iteration when building link table */
-typedef struct {
- H5G_link_table_t *ltable; /* Pointer to link table to build */
- size_t curr_lnk; /* Current link to operate on */
-} H5G_link_ud1_t;
-
-/* User data for deleting a link in the link messages */
-typedef struct {
- /* downward */
- const char *name; /* Name to search for */
- H5F_t *file; /* File that object header is located within */
- hid_t dxpl_id; /* DXPL during insertion */
-
- /* upward */
- H5G_obj_t *obj_type; /* Type of object deleted */
-} H5G_link_ud2_t;
-
-/* User data for link message iteration when querying object info */
-typedef struct {
- /* downward */
- const char *name; /* Name to search for */
- H5F_t *file; /* File that object header is located within */
- hid_t dxpl_id; /* DXPL during insertion */
-
- /* upward */
- H5G_stat_t *statbuf; /* Stat buffer for info */
-} H5G_link_ud3_t;
-
-/* User data for link message iteration when querying object location */
-typedef struct {
- /* downward */
- const char *name; /* Name to search for */
-
- /* upward */
- H5O_link_t *lnk; /* Link struct to fill in */
- hbool_t found; /* Flag to indicate that the object was found */
-} H5G_link_ud4_t;
-
-/* User data for link message iteration when querying soft link value */
-typedef struct {
- /* downward */
- const char *name; /* Name to search for */
- size_t size; /* Buffer size for link value */
-
- /* upward */
- char *buf; /* Buffer to fill with link value */
-} H5G_link_ud5_t;
-
-/* Private macros */
-
-/* PRIVATE PROTOTYPES */
-static herr_t H5G_link_build_table_cb(const void *_mesg, unsigned idx, void *_udata);
-static herr_t H5G_link_build_table(H5O_loc_t *oloc, hid_t dxpl_id,
- const H5O_linfo_t *linfo, H5L_index_t idx_type, H5_iter_order_t order,
- H5G_link_table_t *ltable);
+
+
+/****************/
+/* Local Macros */
+/****************/
+
+
+/******************/
+/* Local Typedefs */
+/******************/
+
+
+/********************/
+/* Package Typedefs */
+/********************/
+
+
+/********************/
+/* Local Prototypes */
+/********************/
+
+
+/*********************/
+/* Package Variables */
+/*********************/
+
+
+/*****************************/
+/* Library Private Variables */
+/*****************************/
+
+
+/*******************/
+/* Local Variables */
+/*******************/
+
/*-------------------------------------------------------------------------
- * Function: H5G_link_build_table_cb
+ * Function: H5G_link_cmp_name_inc
*
- * Purpose: Callback routine for searching 'link' messages for a particular
- * name.
+ * Purpose: Callback routine for comparing two link names, in
+ * increasing alphabetic order
*
- * Return: Non-negative on success/Negative on failure
+ * Return: An integer less than, equal to, or greater than zero if the
+ * first argument is considered to be respectively less than,
+ * equal to, or greater than the second. If two members compare
+ * as equal, their order in the sorted array is undefined.
+ * (i.e. same as strcmp())
*
* Programmer: Quincey Koziol
* koziol@ncsa.uiuc.edu
@@ -106,103 +93,110 @@ static herr_t H5G_link_build_table(H5O_loc_t *oloc, hid_t dxpl_id,
*
*-------------------------------------------------------------------------
*/
-static herr_t
-H5G_link_build_table_cb(const void *_mesg, unsigned UNUSED idx, void *_udata)
+int
+H5G_link_cmp_name_inc(const void *lnk1, const void *lnk2)
{
- const H5O_link_t *lnk = (const H5O_link_t *)_mesg; /* Pointer to link */
- H5G_link_ud1_t *udata = (H5G_link_ud1_t *)_udata; /* 'User data' passed in */
- herr_t ret_value=H5O_ITER_CONT; /* Return value */
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5G_link_cmp_name_inc)
- FUNC_ENTER_NOAPI_NOINIT(H5G_link_build_table_cb)
+ FUNC_LEAVE_NOAPI(HDstrcmp(((const H5O_link_t *)lnk1)->name, ((const H5O_link_t *)lnk2)->name))
+} /* end H5G_link_cmp_name_inc() */
- /* check arguments */
- HDassert(lnk);
- HDassert(udata);
- HDassert(udata->curr_lnk < udata->ltable->nlinks);
+
+/*-------------------------------------------------------------------------
+ * Function: H5G_link_cmp_name_dec
+ *
+ * Purpose: Callback routine for comparing two link names, in
+ * decreasing alphabetic order
+ *
+ * Return: An integer less than, equal to, or greater than zero if the
+ * second argument is considered to be respectively less than,
+ * equal to, or greater than the first. If two members compare
+ * as equal, their order in the sorted array is undefined.
+ * (i.e. opposite strcmp())
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Sep 25 2006
+ *
+ *-------------------------------------------------------------------------
+ */
+int
+H5G_link_cmp_name_dec(const void *lnk1, const void *lnk2)
+{
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5G_link_cmp_name_dec)
+
+ FUNC_LEAVE_NOAPI(HDstrcmp(((const H5O_link_t *)lnk2)->name, ((const H5O_link_t *)lnk1)->name))
+} /* end H5G_link_cmp_name_dec() */
- /* Copy link message into table */
- if(NULL == H5O_copy(H5O_LINK_ID, lnk, &(udata->ltable->lnks[udata->curr_lnk])))
- HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, H5O_ITER_ERROR, "can't copy link message")
+
+/*-------------------------------------------------------------------------
+ * Function: H5G_link_cmp_corder_inc
+ *
+ * Purpose: Callback routine for comparing two link creation orders, in
+ * increasing order
+ *
+ * Return: An integer less than, equal to, or greater than zero if the
+ * first argument is considered to be respectively less than,
+ * equal to, or greater than the second. If two members compare
+ * as equal, their order in the sorted array is undefined.
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Nov 6 2006
+ *
+ *-------------------------------------------------------------------------
+ */
+int
+H5G_link_cmp_corder_inc(const void *lnk1, const void *lnk2)
+{
+ int ret_value; /* Return value */
- /* Increment current link entry to operate on */
- udata->curr_lnk++;
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5G_link_cmp_corder_inc)
+
+ if(((const H5O_link_t *)lnk1)->corder < ((const H5O_link_t *)lnk2)->corder)
+ ret_value = -1;
+ else if(((const H5O_link_t *)lnk1)->corder > ((const H5O_link_t *)lnk2)->corder)
+ ret_value = 1;
+ else
+ ret_value = 0;
-done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_build_table_cb() */
+} /* end H5G_link_cmp_corder_inc() */
/*-------------------------------------------------------------------------
- * Function: H5G_link_build_table
+ * Function: H5G_link_cmp_corder_dec
*
- * Purpose: Builds a table containing a sorted (alphabetically) list of
- * links for a group
+ * Purpose: Callback routine for comparing two link creation orders, in
+ * decreasing order
*
- * Return: Success: Non-negative
- * Failure: Negative
+ * Return: An integer less than, equal to, or greater than zero if the
+ * second argument is considered to be respectively less than,
+ * equal to, or greater than the first. If two members compare
+ * as equal, their order in the sorted array is undefined.
*
* Programmer: Quincey Koziol
- * Sep 6, 2005
+ * koziol@hdfgroup.org
+ * Nov 6 2006
*
*-------------------------------------------------------------------------
*/
-static herr_t
-H5G_link_build_table(H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
- H5L_index_t idx_type, H5_iter_order_t order, H5G_link_table_t *ltable)
+int
+H5G_link_cmp_corder_dec(const void *lnk1, const void *lnk2)
{
- herr_t ret_value = SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI_NOINIT(H5G_link_build_table)
-
- /* Sanity check */
- HDassert(oloc);
- HDassert(linfo);
- HDassert(ltable);
+ int ret_value; /* Return value */
- /* Set size of table */
- H5_CHECK_OVERFLOW(linfo->nlinks, hsize_t, size_t);
- ltable->nlinks = (size_t)linfo->nlinks;
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5G_link_cmp_corder_dec)
- /* Allocate space for the table entries */
- if(ltable->nlinks > 0) {
- H5G_link_ud1_t udata; /* User data for iteration callback */
-
- if((ltable->lnks = H5MM_malloc(sizeof(H5O_link_t) * ltable->nlinks)) == NULL)
- HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")
-
- /* Set up user data for iteration */
- udata.ltable = ltable;
- udata.curr_lnk = 0;
-
- /* Iterate through the link messages, adding them to the table */
- if(H5O_iterate(oloc, H5O_LINK_ID, H5G_link_build_table_cb, &udata, dxpl_id) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "error iterating over link messages")
-
- /* Sort link table in correct iteration order */
- if(idx_type == H5L_INDEX_NAME) {
- if(order == H5_ITER_INC)
- HDqsort(ltable->lnks, ltable->nlinks, sizeof(H5O_link_t), H5G_obj_cmp_name_inc);
- else if(order == H5_ITER_DEC)
- HDqsort(ltable->lnks, ltable->nlinks, sizeof(H5O_link_t), H5G_obj_cmp_name_dec);
- else
- HDassert(order == H5_ITER_NATIVE);
- } /* end if */
- else {
- HDassert(idx_type == H5L_INDEX_CRT_ORDER);
- if(order == H5_ITER_INC)
- HDqsort(ltable->lnks, ltable->nlinks, sizeof(H5O_link_t), H5G_obj_cmp_corder_inc);
- else if(order == H5_ITER_DEC)
- HDqsort(ltable->lnks, ltable->nlinks, sizeof(H5O_link_t), H5G_obj_cmp_corder_dec);
- else
- HDassert(order == H5_ITER_NATIVE);
- } /* end else */
- } /* end if */
+ if(((const H5O_link_t *)lnk1)->corder < ((const H5O_link_t *)lnk2)->corder)
+ ret_value = 1;
+ else if(((const H5O_link_t *)lnk1)->corder > ((const H5O_link_t *)lnk2)->corder)
+ ret_value = -1;
else
- ltable->lnks = NULL;
+ ret_value = 0;
-done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_build_table() */
+} /* end H5G_link_cmp_corder_dec() */
/*-------------------------------------------------------------------------
@@ -384,464 +378,43 @@ done:
/*-------------------------------------------------------------------------
- * Function: H5G_link_insert
+ * Function: H5G_link_release_table
*
- * Purpose: Insert a new symbol into the table described by GRP_ENT in
- * file F. The name of the new symbol is NAME and its symbol
- * table entry is OBJ_ENT.
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * koziol@ncsa.uiuc.edu
- * Sep 6 2005
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5G_link_insert(H5O_loc_t *grp_oloc, H5O_link_t *obj_lnk,
- hid_t dxpl_id)
-{
- herr_t ret_value = SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5G_link_insert, FAIL)
-
- /* check arguments */
- HDassert(grp_oloc && grp_oloc->file);
- HDassert(obj_lnk);
-
- /* Insert link message into group */
- if(H5O_modify(grp_oloc, H5O_LINK_ID, H5O_NEW_MESG, 0, H5O_UPDATE_TIME, obj_lnk, dxpl_id) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create message")
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_insert() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_get_name_by_idx
- *
- * Purpose: Returns the name of objects in the group by giving index.
- *
- * Return: Success: Non-negative, length of name
- * Failure: Negative
- *
- * Programmer: Quincey Koziol
- * Sep 6, 2005
- *
- *-------------------------------------------------------------------------
- */
-ssize_t
-H5G_link_get_name_by_idx(H5O_loc_t *oloc, hid_t dxpl_id,
- const H5O_linfo_t *linfo, H5L_index_t idx_type, H5_iter_order_t order,
- hsize_t idx, char* name, size_t size)
-{
- H5G_link_table_t ltable = {0, NULL}; /* Link table */
- ssize_t ret_value; /* Return value */
-
- FUNC_ENTER_NOAPI(H5G_link_get_name_by_idx, FAIL)
-
- /* Sanity check */
- HDassert(oloc);
-
- /* Build table of all link messages */
- if(H5G_link_build_table(oloc, dxpl_id, linfo, idx_type, order, &ltable) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create link message table")
-
- /* Check for going out of bounds */
- if(idx >= ltable.nlinks)
- HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "index out of bound")
-
- /* Get the length of the name */
- ret_value = (ssize_t)HDstrlen(ltable.lnks[idx].name);
-
- /* Copy the name into the user's buffer, if given */
- if(name) {
- HDstrncpy(name, ltable.lnks[idx].name, MIN((size_t)(ret_value + 1), size));
- if((size_t)ret_value >= size)
- name[size - 1]='\0';
- } /* end if */
-
-done:
- /* Release link table */
- if(ltable.lnks)
- /* Free link table information */
- if(H5G_obj_release_table(&ltable) < 0)
- HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
-
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_get_name_by_idx() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_get_type_by_idx
- *
- * Purpose: Returns the type of objects in the group by giving index.
+ * Purpose: Release table containing a list of links for a group
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
- * Sep 12, 2005
- *
- *-------------------------------------------------------------------------
- */
-H5G_obj_t
-H5G_link_get_type_by_idx(H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
- hsize_t idx)
-{
- H5G_link_table_t ltable = {0, NULL}; /* Link table */
- H5G_obj_t ret_value; /* Return value */
-
- FUNC_ENTER_NOAPI(H5G_link_get_type_by_idx, H5G_UNKNOWN)
-
- /* Sanity check */
- HDassert(oloc);
-
- /* Build table of all link messages */
- if(H5G_link_build_table(oloc, dxpl_id, linfo, H5L_INDEX_NAME, H5_ITER_INC, &ltable) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, H5G_UNKNOWN, "can't create link message table")
-
- /* Check for going out of bounds */
- if(idx >= ltable.nlinks)
- HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, H5G_UNKNOWN, "index out of bound")
-
- /* Determine type of object */
- if(ltable.lnks[idx].type == H5L_TYPE_SOFT)
- ret_value = H5G_LINK;
- else if(ltable.lnks[idx].type >= H5L_TYPE_UD_MIN)
- ret_value = H5G_UDLINK;
- else if(ltable.lnks[idx].type == H5L_TYPE_HARD){
- H5O_loc_t tmp_oloc; /* Temporary object location */
-
- /* Build temporary object location */
- tmp_oloc.file = oloc->file;
- tmp_oloc.addr = ltable.lnks[idx].u.hard.addr;
-
- /* Get the type of the object */
- if((ret_value = H5O_obj_type(&tmp_oloc, dxpl_id)) == H5G_UNKNOWN)
- HGOTO_ERROR(H5E_SYM, H5E_BADTYPE, H5G_UNKNOWN, "can't determine object type")
- } else {
- HGOTO_ERROR(H5E_SYM, H5E_BADTYPE, H5G_UNKNOWN, "unknown link type")
- } /* end else */
-
-done:
- /* Release link table */
- if(ltable.lnks)
- /* Free link table information */
- if(H5G_obj_release_table(&ltable) < 0)
- HDONE_ERROR(H5E_SYM, H5E_CANTFREE, H5G_UNKNOWN, "unable to release link table")
-
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_get_type_by_idx() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_remove_cb
- *
- * Purpose: Callback routine for deleting 'link' message for a particular
- * name.
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * koziol@ncsa.uiuc.edu
- * Sep 5 2005
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5G_link_remove_cb(const void *_mesg, unsigned UNUSED idx, void *_udata)
-{
- const H5O_link_t *lnk = (const H5O_link_t *)_mesg; /* Pointer to link */
- H5G_link_ud2_t *udata = (H5G_link_ud2_t *)_udata; /* 'User data' passed in */
- herr_t ret_value = H5O_ITER_CONT; /* Return value */
-
- FUNC_ENTER_NOAPI_NOINIT(H5G_link_remove_cb)
-
- /* check arguments */
- HDassert(lnk);
- HDassert(udata);
-
- /* If we've found the right link, get the object type */
- if(HDstrcmp(lnk->name, udata->name) == 0) {
- switch(lnk->type)
- {
- case H5L_TYPE_HARD:
- {
- H5O_loc_t tmp_oloc; /* Temporary object location */
-
- /* Build temporary object location */
- tmp_oloc.file = udata->file;
- tmp_oloc.addr = lnk->u.hard.addr;
-
- /* Get the type of the object */
- /* Note: no way to check for error :-( */
- *(udata->obj_type) = H5O_obj_type(&tmp_oloc, udata->dxpl_id);
- }
- break;
-
- case H5L_TYPE_SOFT:
- *(udata->obj_type) = H5G_LINK;
- break;
-
- default: /* User-defined link */
- if(lnk->type < H5L_TYPE_UD_MIN)
- HGOTO_ERROR(H5E_SYM, H5E_BADVALUE, FAIL, "unknown link type")
-
- *(udata->obj_type) = H5G_UDLINK;
- }
- /* Stop the iteration, we found the correct link */
- HGOTO_DONE(H5O_ITER_STOP)
- } /* end if */
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_remove_cb() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_remove
- *
- * Purpose: Remove NAME from links.
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * Monday, September 19, 2005
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5G_link_remove(const H5O_loc_t *oloc, const char *name, H5G_obj_t *obj_type,
- hid_t dxpl_id)
-{
- H5G_link_ud2_t udata; /* Data to pass through OH iteration */
- herr_t ret_value = SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5G_link_remove, FAIL)
-
- HDassert(oloc && oloc->file);
- HDassert(name && *name);
-
- /* Initialize data to pass through object header iteration */
- udata.name = name;
- udata.file = oloc->file;
- udata.dxpl_id = dxpl_id;
- udata.obj_type = obj_type;
-
- /* Iterate over the link messages to delete the right one */
- if(H5O_remove_op(oloc, H5O_LINK_ID, H5O_FIRST, H5G_link_remove_cb, &udata, TRUE, dxpl_id) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete link message")
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_remove() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_iterate
- *
- * Purpose: Iterate over the links in a group
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * Monday, October 3, 2005
+ * Sep 6, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
-H5G_link_iterate(H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
- H5_iter_order_t order, hid_t gid, hbool_t lib_internal, int skip,
- int *last_obj, H5G_link_iterate_t op, void *op_data)
+H5G_link_release_table(H5G_link_table_t *ltable)
{
- H5G_link_table_t ltable = {0, NULL}; /* Link table */
- size_t u; /* Local index variable */
- herr_t ret_value;
+ size_t u; /* Local index variable */
+ herr_t ret_value = SUCCEED; /* Return value */
- FUNC_ENTER_NOAPI(H5G_link_iterate, FAIL)
+ FUNC_ENTER_NOAPI_NOINIT(H5G_link_release_table)
/* Sanity check */
- HDassert(oloc);
- HDassert(lib_internal || H5I_GROUP == H5I_get_type(gid));
- HDassert(op.lib_op);
-
- /* Build table of all link messages */
- if(H5G_link_build_table(oloc, dxpl_id, linfo, H5L_INDEX_NAME, order, &ltable) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create link message table")
-
- /* Iterate over link messages */
- for(u = 0, ret_value = H5B_ITER_CONT; u < ltable.nlinks && !ret_value; u++) {
- if(skip > 0)
- --skip;
- else {
- /* Check for internal callback with link info */
- if(lib_internal)
- ret_value = (op.lib_op)(&(ltable.lnks[u]), op_data);
- else
- ret_value = (op.app_op)(gid, ltable.lnks[u].name, op_data);
- } /* end else */
-
- /* Increment the number of entries passed through */
- /* (whether we skipped them or not) */
- (*last_obj)++;
- } /* end for */
-
- /* Check for callback failure and pass along return value */
- if(ret_value < 0)
- HERROR(H5E_SYM, H5E_CANTNEXT, "iteration operator failed");
-
-done:
- /* Release link table */
- if(ltable.lnks)
- /* Free link table information */
- if(H5G_obj_release_table(&ltable) < 0)
- HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
-
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_iterate() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_lookup_cb
- *
- * Purpose: Callback routine for searching 'link' messages for a particular
- * name & gettting object location for it
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * koziol@ncsa.uiuc.edu
- * Sep 20 2005
- *
- *-------------------------------------------------------------------------
- */
-static herr_t
-H5G_link_lookup_cb(const void *_mesg, unsigned UNUSED idx, void *_udata)
-{
- const H5O_link_t *lnk = (const H5O_link_t *)_mesg; /* Pointer to link */
- H5G_link_ud4_t *udata = (H5G_link_ud4_t *)_udata; /* 'User data' passed in */
- herr_t ret_value = H5O_ITER_CONT; /* Return value */
-
- FUNC_ENTER_NOAPI_NOINIT(H5G_link_lookup_cb)
-
- /* check arguments */
- HDassert(lnk);
- HDassert(udata);
-
- /* Check for name to get information */
- if(HDstrcmp(lnk->name, udata->name) == 0) {
- if(udata->lnk) {
- /* Copy link information */
- if(NULL == H5O_copy(H5O_LINK_ID, lnk, udata->lnk))
- HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, H5O_ITER_ERROR, "can't copy link message")
- } /* end if */
+ HDassert(ltable);
- /* Indicate that the correct link was found */
- udata->found = TRUE;
+ /* Release link info, if any */
+ if(ltable->nlinks > 0) {
+ /* Free link message information */
+ for(u = 0; u < ltable->nlinks; u++)
+ if(H5O_reset(H5O_LINK_ID, &(ltable->lnks[u])) < 0)
+ HGOTO_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link message")
- /* Stop iteration now */
- HGOTO_DONE(H5O_ITER_STOP)
+ /* Free table of links */
+ H5MM_xfree(ltable->lnks);
} /* end if */
+ else
+ HDassert(ltable->lnks == NULL);
done:
FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_lookup_cb() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_lookup
- *
- * Purpose: Look up an object relative to a group, using link messages.
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * koziol@ncsa.uiuc.edu
- * Sep 20 2005
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5G_link_lookup(H5O_loc_t *oloc, const char *name, H5O_link_t *lnk,
- hid_t dxpl_id)
-{
- H5G_link_ud4_t udata; /* User data for iteration callback */
- herr_t ret_value = SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5G_link_lookup, FAIL)
-
- /* check arguments */
- HDassert(lnk && oloc->file);
- HDassert(name && *name);
-
- /* Set up user data for iteration */
- udata.name = name;
- udata.lnk = lnk;
- udata.found = FALSE;
-
- /* Iterate through the link messages, adding them to the table */
- if(H5O_iterate(oloc, H5O_LINK_ID, H5G_link_lookup_cb, &udata, dxpl_id) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "error iterating over link messages")
-
- /* Check if we found the link we were looking for */
- if(!udata.found)
- HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object not found")
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_lookup() */
-
-
-/*-------------------------------------------------------------------------
- * Function: H5G_link_lookup_by_idx
- *
- * Purpose: Look up an object in a group using link messages,
- * according to the order of an index
- *
- * Return: Non-negative on success/Negative on failure
- *
- * Programmer: Quincey Koziol
- * koziol@hdfgroup.org
- * Nov 6 2006
- *
- *-------------------------------------------------------------------------
- */
-herr_t
-H5G_link_lookup_by_idx(H5O_loc_t *oloc, hid_t dxpl_id, const H5O_linfo_t *linfo,
- H5L_index_t idx_type, H5_iter_order_t order, hsize_t n, H5O_link_t *lnk)
-{
- H5G_link_table_t ltable = {0, NULL}; /* Link table */
- herr_t ret_value = SUCCEED; /* Return value */
-
- FUNC_ENTER_NOAPI(H5G_link_lookup_by_idx, FAIL)
-
- /* check arguments */
- HDassert(oloc && oloc->file);
- HDassert(linfo);
- HDassert(lnk);
-
- /* Build table of all link messages, sorted according to desired order */
- if(H5G_link_build_table(oloc, dxpl_id, linfo, idx_type, order, &ltable) < 0)
- HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "can't create link message table")
-
- /* Check for going out of bounds */
- if(n >= ltable.nlinks)
- HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, FAIL, "index out of bound")
-
- /* Copy link information */
- if(NULL == H5O_copy(H5O_LINK_ID, &ltable.lnks[n], lnk))
- HGOTO_ERROR(H5E_SYM, H5E_CANTCOPY, H5O_ITER_ERROR, "can't copy link message")
-
-done:
- /* Release link table */
- if(ltable.lnks)
- /* Free link table information */
- if(H5G_obj_release_table(&ltable) < 0)
- HDONE_ERROR(H5E_SYM, H5E_CANTFREE, FAIL, "unable to release link table")
-
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5G_link_lookup_by_idx() */
+} /* end H5G_link_release_table() */
generated by cgit v0.12 at 2024-11-02 07:10:56 (GMT)