/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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: H5Oattribute.c * Dec 11 2006 * Quincey Koziol * * Purpose: Object header attribute routines. * *------------------------------------------------------------------------- */ /****************/ /* Module Setup */ /****************/ #define H5A_PACKAGE /*suppress error about including H5Apkg */ #define H5O_PACKAGE /*suppress error about including H5Opkg */ /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5Apkg.h" /* Attributes */ #include "H5Eprivate.h" /* Error handling */ #include "H5MMprivate.h" /* Memory management */ #include "H5Opkg.h" /* Object headers */ #include "H5SMprivate.h" /* Shared Object Header Messages */ #include "H5Iprivate.h" /* IDs */ #include "H5Fprivate.h" /* File */ /****************/ /* Local Macros */ /****************/ /******************/ /* Local Typedefs */ /******************/ /* User data for iteration when converting attributes to dense storage */ typedef struct { H5F_t *f; /* Pointer to file for insertion */ hid_t dxpl_id; /* DXPL during iteration */ H5O_ainfo_t *ainfo; /* Attribute info struct */ } H5O_iter_cvt_t; /* User data for iteration when opening an attribute */ typedef struct { /* down */ const char *name; /* Name of attribute to open */ /* up */ H5A_t *attr; /* Attribute data to update object header with */ } H5O_iter_opn_t; /* User data for iteration when updating an attribute */ typedef struct { /* down */ H5F_t *f; /* Pointer to file attribute is in */ hid_t dxpl_id; /* DXPL for operation */ H5A_t *attr; /* Attribute data to update object header with */ /* up */ hbool_t found; /* Whether the attribute was found */ } H5O_iter_wrt_t; /* User data for iteration when renaming an attribute */ typedef struct { /* down */ H5F_t *f; /* Pointer to file attribute is in */ hid_t dxpl_id; /* DXPL for operation */ const char *old_name; /* Old name of attribute */ const char *new_name; /* New name of attribute */ /* up */ hbool_t found; /* Whether the attribute was found */ } H5O_iter_ren_t; /* User data for iteration when iterating over attributes */ typedef struct { /* down */ H5F_t *f; /* Pointer to file attribute is in */ hid_t dxpl_id; /* DXPL for operation */ hid_t loc_id; /* ID of object being iterated over */ unsigned skip; /* # of attributes to skip over */ H5A_operator_t op; /* Callback routine for each attribute */ void *op_data; /* User data for callback */ /* up */ unsigned count; /* Count of attributes examined */ } H5O_iter_itr_t; /* User data for iteration when removing an attribute */ typedef struct { /* down */ H5F_t *f; /* Pointer to file attribute is in */ hid_t dxpl_id; /* DXPL for operation */ const char *name; /* Name of attribute to open */ /* up */ hbool_t found; /* Found attribute to delete */ } H5O_iter_rm_t; /* User data for iteration when checking if an attribute exists */ typedef struct { /* down */ const char *name; /* Name of attribute to open */ /* up */ hbool_t found; /* Found attribute */ } H5O_iter_xst_t; /********************/ /* Package Typedefs */ /********************/ /********************/ /* Local Prototypes */ /********************/ static herr_t H5O_attr_iterate_real(hid_t loc_id, const H5O_loc_t *loc, hid_t dxpl_id, H5_index_t idx_type, H5_iter_order_t order, hsize_t skip, hsize_t *last_attr, const H5A_attr_iter_op_t *attr_op, void *op_data); static htri_t H5O_attr_find_opened_attr(const H5O_loc_t *loc, H5A_t **attr, const char* name_to_open); /*********************/ /* Package Variables */ /*********************/ /*****************************/ /* Library Private Variables */ /*****************************/ /*******************/ /* Local Variables */ /*******************/ /*------------------------------------------------------------------------- * Function: H5O_attr_to_dense_cb * * Purpose: Object header iterator callback routine to convert compact * attributes to dense attributes * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 4 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_to_dense_cb(H5O_t *oh, H5O_mesg_t *mesg/*in,out*/, unsigned UNUSED sequence, hbool_t *oh_modified, void *_udata/*in,out*/) { H5O_iter_cvt_t *udata = (H5O_iter_cvt_t *)_udata; /* Operator user data */ H5A_t *attr = (H5A_t *)mesg->native; /* Pointer to attribute to insert */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_to_dense_cb) /* check args */ HDassert(oh); HDassert(mesg); HDassert(udata); HDassert(udata->f); HDassert(udata->ainfo); HDassert(attr); /* Insert attribute into dense storage */ if(H5A_dense_insert(udata->f, udata->dxpl_id, udata->ainfo, attr) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTINSERT, H5_ITER_ERROR, "unable to add to dense storage") /* Convert message into a null message in the header */ /* (don't delete attribute's space in the file though) */ if(H5O_release_mesg(udata->f, udata->dxpl_id, oh, mesg, FALSE) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, H5_ITER_ERROR, "unable to convert into null message") /* Indicate that the object header was modified */ *oh_modified = TRUE; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_to_dense_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_create * * Purpose: Create a new attribute in the object header. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Friday, December 8, 2006 * *------------------------------------------------------------------------- */ herr_t H5O_attr_create(const H5O_loc_t *loc, hid_t dxpl_id, H5A_t *attr) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ htri_t shared_mesg; /* Should this message be stored in the Shared Message table? */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_create) /* Check arguments */ HDassert(loc); HDassert(attr); /* Pin the object header */ if(NULL == (oh = H5O_pin(loc, dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPIN, FAIL, "unable to pin object header") /* Check if this object already has attribute information */ if(oh->version > H5O_VERSION_1) { hbool_t new_ainfo = FALSE; /* Flag to indicate that the attribute information is new */ htri_t ainfo_exists; /* Whether the attribute info was retrieved */ /* Check for (& retrieve if available) attribute info */ if((ainfo_exists = H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") if(!ainfo_exists) { /* Initialize attribute information */ ainfo.track_corder = (hbool_t)((oh->flags & H5O_HDR_ATTR_CRT_ORDER_TRACKED) ? TRUE : FALSE); ainfo.index_corder = (hbool_t)((oh->flags & H5O_HDR_ATTR_CRT_ORDER_INDEXED) ? TRUE : FALSE); ainfo.max_crt_idx = 0; ainfo.corder_bt2_addr = HADDR_UNDEF; ainfo.nattrs = 0; ainfo.fheap_addr = HADDR_UNDEF; ainfo.name_bt2_addr = HADDR_UNDEF; /* Set flag to add attribute information to object header */ new_ainfo = TRUE; } /* end if */ else { /* Sanity check attribute info read in */ HDassert(ainfo.nattrs > 0); HDassert(ainfo.track_corder == ((oh->flags & H5O_HDR_ATTR_CRT_ORDER_TRACKED) > 0)); HDassert(ainfo.index_corder == ((oh->flags & H5O_HDR_ATTR_CRT_ORDER_INDEXED) > 0)); } /* end else */ /* Check if switching to "dense" attribute storage is possible */ if(!H5F_addr_defined(ainfo.fheap_addr)) { htri_t sharable; /* Whether the attribute will be shared */ size_t raw_size = 0; /* Raw size of message */ /* Check for attribute being sharable */ if((sharable = H5SM_can_share(loc->file, dxpl_id, NULL, NULL, H5O_ATTR_ID, attr)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_BADMESG, FAIL, "can't determine attribute sharing status") else if(sharable == FALSE) { /* Compute the size needed to encode the attribute */ raw_size = (H5O_MSG_ATTR->raw_size)(loc->file, FALSE, attr); } /* end if */ /* Check for condititions for switching to "dense" attribute storage are met */ if(ainfo.nattrs == oh->max_compact || (!sharable && raw_size >= H5O_MESG_MAX_SIZE)) { H5O_iter_cvt_t udata; /* User data for callback */ H5O_mesg_operator_t op; /* Wrapper for operator */ /* Create dense storage for attributes */ if(H5A_dense_create(loc->file, dxpl_id, &ainfo) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to create dense storage for attributes") /* Set up user data for callback */ udata.f = loc->file; udata.dxpl_id = dxpl_id; udata.ainfo = &ainfo; /* Iterate over existing attributes, moving them to dense storage */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_to_dense_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTCONVERT, FAIL, "error converting attributes to dense storage") } /* end if */ } /* end if */ /* Increment attribute count on object */ ainfo.nattrs++; /* Check whether we're tracking the creation index on attributes */ if(ainfo.track_corder) { /* Check for attribute creation order index on the object wrapping around */ if(ainfo.max_crt_idx == H5O_MAX_CRT_ORDER_IDX) HGOTO_ERROR(H5E_ATTR, H5E_CANTINC, FAIL, "attribute creation index can't be incremented") /* Set the creation order index on the attribute & incr. creation order index */ attr->shared->crt_idx = ainfo.max_crt_idx++; } /* end if */ else /* Set "bogus" creation index for attribute */ attr->shared->crt_idx = H5O_MAX_CRT_ORDER_IDX; /* Add the attribute information message, if one is needed */ if(new_ainfo) { if(H5O_msg_append_real(loc->file, dxpl_id, oh, H5O_MSG_AINFO, H5O_MSG_FLAG_DONTSHARE, 0, &ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to create new attribute info message") } /* end if */ /* Otherwise, update existing message */ else { if(H5O_msg_write_real(loc->file, dxpl_id, oh, H5O_MSG_AINFO, H5O_MSG_FLAG_DONTSHARE, 0, &ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update attribute info message") } /* end else */ } /* end if */ else { /* Set "bogus" creation index for attribute */ attr->shared->crt_idx = H5O_MAX_CRT_ORDER_IDX; /* Set attribute info value to get attribute into object header */ ainfo.fheap_addr = HADDR_UNDEF; } /* end else */ /* Check for storing attribute with dense storage */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Insert attribute into dense storage */ if(H5A_dense_insert(loc->file, dxpl_id, &ainfo, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to add to dense storage") } /* end if */ else { /* Append new message to object header */ if(H5O_msg_append_real(loc->file, dxpl_id, oh, H5O_MSG_ATTR, 0, 0, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, FAIL, "unable to create new attribute in header") } /* end else */ /* Increment reference count for shared attribute object for the * object handle created by the caller function H5A_create. The count * for the cached object header has been incremented in the step above * (in H5O_msg_append_real). The dense storage doesn't need a count. */ attr->shared->nrefs += 1; /* Was new attribute shared? */ if((shared_mesg = H5O_msg_is_shared(H5O_ATTR_ID, attr)) > 0) { hsize_t attr_rc; /* Attribute's ref count in shared message storage */ /* Retrieve ref count for shared attribute */ if(H5SM_get_refcount(loc->file, dxpl_id, H5O_ATTR_ID, &attr->sh_loc, &attr_rc) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't retrieve shared message ref count") /* If this is not the first copy of the attribute in the shared message * storage, decrement the reference count on any shared components * of the attribute. This is done because the shared message * storage's "try delete" call doesn't call the message class's * "delete" callback until the reference count drops to zero. * However, attributes have already increased the reference * count on shared components before passing the attribute * to the shared message code to manage, causing an asymmetry * in the reference counting for any shared components. * * The alternate solution is to have the shared message's "try * delete" code always call the message class's "delete" callback, * even when the reference count is positive. This can be done * without an appreciable performance hit (by using H5HF_op() in * the shared message comparison v2 B-tree callback), but it has * the undesirable side-effect of leaving the reference count on * the attribute's shared components artificially (and possibly * misleadingly) high, because there's only one shared attribute * referencing the shared components, not objects referencing the shared components. * * *ick* -QAK, 2007/01/08 */ if(attr_rc > 1) { if(H5O_attr_delete(loc->file, dxpl_id, oh, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete attribute") } /* end if */ } /* end if */ else if(shared_mesg < 0) HGOTO_ERROR(H5E_ATTR, H5E_WRITEERROR, FAIL, "error determining if message should be shared") /* Update the modification time, if any */ if(H5O_touch_oh(loc->file, dxpl_id, oh, FALSE) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update time on object") done: if(oh && H5O_unpin(oh) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPIN, FAIL, "unable to unpin object header") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_create() */ /*------------------------------------------------------------------------- * Function: H5O_attr_open_cb * * Purpose: Object header iterator callback routine to open an * attribute stored compactly. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 11 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_open_cb(H5O_t *oh, H5O_mesg_t *mesg/*in,out*/, unsigned sequence, hbool_t UNUSED *oh_modified, void *_udata/*in,out*/) { H5O_iter_opn_t *udata = (H5O_iter_opn_t *)_udata; /* Operator user data */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_open_cb) /* check args */ HDassert(oh); HDassert(mesg); HDassert(!udata->attr); /* Check for correct attribute message to modify */ if(HDstrcmp(((H5A_t *)mesg->native)->shared->name, udata->name) == 0) { /* Make a copy of the attribute to return */ if(NULL == (udata->attr = H5A_copy(NULL, (H5A_t *)mesg->native))) HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, H5_ITER_ERROR, "unable to copy attribute") /* Assign [somewhat arbitrary] creation order value, for older versions of the format */ if(oh->version == H5O_VERSION_1) udata->attr->shared->crt_idx = sequence; /* Stop iterating */ ret_value = H5_ITER_STOP; } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_open_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_open_by_name * * Purpose: Open an existing attribute in an object header. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Monday, December 11, 2006 * * Modification:Raymond Lu * 23 June 2008 * If the attribute is in dense storage and has already been * opened, make a copy of already opened object to share some * object information. *------------------------------------------------------------------------- */ H5A_t * H5O_attr_open_by_name(const H5O_loc_t *loc, const char *name, hid_t dxpl_id) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ H5A_t *exist_attr = NULL; /* Existing opened attribute object */ H5A_t *opened_attr = NULL; /* Newly opened attribute object */ htri_t found_open_attr = FALSE; /* Whether opened object is found */ H5A_t *ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_open_by_name) /* Check arguments */ HDassert(loc); HDassert(name); /* Protect the object header to iterate over */ if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC_READ))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPROTECT, NULL, "unable to load object header") /* Check for attribute info stored */ ainfo.fheap_addr = HADDR_UNDEF; if(oh->version > H5O_VERSION_1) { /* Check for (& retrieve if available) attribute info */ if(H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, NULL, "can't check for attribute info message") } /* end if */ /* If found the attribute is already opened, make a copy of it to share the * object information. If not, open attribute as a new object */ if((found_open_attr = H5O_attr_find_opened_attr(loc, &exist_attr, name)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, NULL, "failed in finding opened attribute") else if(found_open_attr == TRUE) { if(NULL == (opened_attr = H5A_copy(NULL, exist_attr))) HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, NULL, "can't copy existing attribute") } /* end else if */ else { /* Check for attributes in dense storage */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Open attribute with dense storage */ if(NULL == (opened_attr = H5A_dense_open(loc->file, dxpl_id, &ainfo, name))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, NULL, "can't open attribute") } /* end if */ else { H5O_iter_opn_t udata; /* User data for callback */ H5O_mesg_operator_t op; /* Wrapper for operator */ /* Set up user data for callback */ udata.name = name; udata.attr = NULL; /* Iterate over attributes, to locate correct one to open */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_open_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, NULL, "error updating attribute") /* Check that we found the attribute */ if(!udata.attr) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, NULL, "can't locate attribute") /* Get attribute opened from object header */ HDassert(udata.attr); opened_attr = udata.attr; } /* end else */ /* Mark datatype as being on disk now */ if(H5T_set_loc(opened_attr->shared->dt, loc->file, H5T_LOC_DISK) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "invalid datatype location") } /* end else */ /* Set return value */ ret_value = opened_attr; done: if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, NULL, "unable to release object header") /* Release any resources, on error */ if(NULL == ret_value && opened_attr) if(H5A_close(opened_attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTCLOSEOBJ, NULL, "can't close attribute") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_open_by_name() */ /*------------------------------------------------------------------------- * Function: H5O_attr_open_by_idx_cb * * Purpose: Callback routine opening an attribute by index * * Return: Success: Non-negative * Failure: Negative * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 18 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_open_by_idx_cb(const H5A_t *attr, void *_ret_attr) { H5A_t **ret_attr = (H5A_t **)_ret_attr; /* 'User data' passed in */ herr_t ret_value = H5_ITER_STOP; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_open_by_idx_cb) /* check arguments */ HDassert(attr); HDassert(ret_attr); /* Copy attribute information. Shared some attribute information. */ if(NULL == (*ret_attr = H5A_copy(NULL, attr))) HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, H5_ITER_ERROR, "can't copy attribute") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_open_by_idx_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_open_by_idx * * Purpose: Open an existing attribute in an object header according to * an index. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Monday, December 18, 2006 * * Modification:Raymond Lu * 23 June 2008 * After opening the attribute, check whether it's in dense * storage and has already been opened. If it has, close the * opened object and make a copy of already opened object. *------------------------------------------------------------------------- */ H5A_t * H5O_attr_open_by_idx(const H5O_loc_t *loc, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t dxpl_id) { H5O_t *oh = NULL; /* Object header */ H5A_attr_iter_op_t attr_op; /* Attribute operator */ H5A_t *exist_attr = NULL; /* Existing opened attribute object */ H5A_t *opened_attr = NULL; /* Newly opened attribute object */ htri_t found_open_attr = FALSE; /* Whether opened object is found */ H5A_t *ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_open_by_idx) /* Check arguments */ HDassert(loc); /* Build attribute operator info */ attr_op.op_type = H5A_ATTR_OP_LIB; attr_op.u.lib_op = H5O_attr_open_by_idx_cb; /* Iterate over attributes to locate correct one */ if(H5O_attr_iterate_real((hid_t)-1, loc, dxpl_id, idx_type, order, n, NULL, &attr_op, &opened_attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_BADITER, NULL, "can't locate attribute") /* Protect the object header to iterate over */ if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC_READ))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPROTECT, NULL, "unable to load object header") /* Find out whether it has already been opened. If it has, close the object * and make a copy of the already opened object to share the object info. */ if(opened_attr) { if((found_open_attr = H5O_attr_find_opened_attr(loc, &exist_attr, opened_attr->shared->name)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, NULL, "failed in finding opened attribute") /* If found that the attribute is already opened, make a copy of it * and close the object just opened. */ if(found_open_attr && exist_attr) { if(H5A_close(opened_attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTCLOSEOBJ, NULL, "can't close attribute") if(NULL == (opened_attr = H5A_copy(NULL, exist_attr))) HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, NULL, "can't copy existing attribute") } else { /* Mark datatype as being on disk now */ if(H5T_set_loc(opened_attr->shared->dt, loc->file, H5T_LOC_DISK) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "invalid datatype location") } /* end if */ } /* end if */ /* Set return value */ ret_value = opened_attr; done: if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, NULL, "unable to release object header") /* Release any resources, on error */ if(NULL == ret_value && opened_attr) if(H5A_close(opened_attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTCLOSEOBJ, NULL, "can't close attribute") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_open_by_idx() */ /*------------------------------------------------------------------------- * Function: H5O_attr_find_opened_attr * * Purpose: Find out whether an attribute has been opened by giving * the name. Return the pointer to the object if found. * * Return: TRUE: found the already opened object * FALSE: didn't find the opened object * FAIL: function failed. * * Programmer: Raymond Lu * 23 June 2008 * *------------------------------------------------------------------------- */ static htri_t H5O_attr_find_opened_attr(const H5O_loc_t *loc, H5A_t **attr, const char* name_to_open) { hid_t *attr_id_list = NULL; /* List of IDs for opened attributes */ unsigned long loc_fnum; /* File serial # for object */ size_t num_open_attr; /* Number of opened attributes */ htri_t ret_value = FALSE; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_find_opened_attr) /* Get file serial number for the location of attribute */ if(H5F_get_fileno(loc->file, &loc_fnum) < 0) HGOTO_ERROR(H5E_ATTR, H5E_BADVALUE, FAIL, "can't get file serial number") /* Count all opened attributes */ num_open_attr = H5F_get_obj_count(loc->file, H5F_OBJ_ATTR | H5F_OBJ_LOCAL, FALSE); /* Find out whether the attribute has been opened */ if(num_open_attr) { size_t u; /* Local index variable */ /* Allocate space for the attribute ID list */ if(NULL == (attr_id_list = (hid_t *)H5MM_malloc(num_open_attr * sizeof(hid_t)))) HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "unable to allocate memory for attribute ID list") /* Retrieve the IDs of all opened attributes */ H5F_get_obj_ids(loc->file, H5F_OBJ_ATTR | H5F_OBJ_LOCAL, num_open_attr, attr_id_list, FALSE); /* Iterate over the attributes */ for(u = 0; u < num_open_attr; u++) { unsigned long attr_fnum; /* Attributes file serial number */ /* Get pointer to attribute */ if(NULL == (*attr = (H5A_t *)H5I_object_verify(attr_id_list[u], H5I_ATTR))) HGOTO_ERROR(H5E_ATTR, H5E_BADTYPE, FAIL, "not an attribute") /* Get file serial number for attribute */ if(H5F_get_fileno((*attr)->oloc.file, &attr_fnum) < 0) HGOTO_ERROR(H5E_ATTR, H5E_BADVALUE, FAIL, "can't get file serial number") /* Verify whether it's the right object. The attribute name, object * address to which the attribute is attached, and file serial * number should all match. */ if(!HDstrcmp(name_to_open, (*attr)->shared->name) && loc->addr == (*attr)->oloc.addr && loc_fnum == attr_fnum) { ret_value = TRUE; break; } /* end if */ } /* end for */ } /* end if */ done: if(attr_id_list) H5MM_free(attr_id_list); FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_find_opened_attr */ /*------------------------------------------------------------------------- * Function: H5O_attr_update_shared * * Purpose: Update a shared attribute. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Jan 2 2007 * *------------------------------------------------------------------------- */ herr_t H5O_attr_update_shared(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5A_t *attr, H5O_shared_t *update_sh_mesg) { H5O_shared_t sh_mesg; /* Shared object header message */ hsize_t attr_rc; /* Attribute's ref count in shared message storage */ htri_t shared_mesg; /* Whether the message should be shared */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_update_shared) /* check args */ HDassert(f); HDassert(attr); /* Extract shared message info from current attribute (for later use) */ if(H5O_set_shared(&sh_mesg, &(attr->sh_loc)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, FAIL, "can't get shared message") /* Reset existing sharing information */ if(H5O_msg_reset_share(H5O_ATTR_ID, attr) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to reset attribute sharing") /* Store new version of message as a SOHM */ /* (should always work, since we're not changing the size of the attribute) */ if((shared_mesg = H5SM_try_share(f, dxpl_id, oh, H5O_ATTR_ID, attr, NULL)) == 0) HGOTO_ERROR(H5E_ATTR, H5E_BADMESG, FAIL, "attribute changed sharing status") else if(shared_mesg < 0) HGOTO_ERROR(H5E_ATTR, H5E_BADMESG, FAIL, "can't share attribute") /* Retrieve shared message storage ref count for new shared attribute */ if(H5SM_get_refcount(f, dxpl_id, H5O_ATTR_ID, &attr->sh_loc, &attr_rc) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't retrieve shared message ref count") /* If the newly shared attribute needs to share "ownership" of the shared * components (ie. its reference count is 1), increment the reference * count on any shared components of the attribute, so that they won't * be removed from the file by the following "delete" operation on the * original attribute shared message info. (Essentially a "copy on * write" operation). * * *ick* -QAK, 2007/01/08 */ if(attr_rc == 1) { /* Increment reference count on attribute components */ if(H5O_attr_link(f, dxpl_id, oh, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_LINKCOUNT, FAIL, "unable to adjust attribute link count") } /* end if */ /* Remove the old attribute from the SOHM storage */ if(H5SM_delete(f, dxpl_id, oh, &sh_mesg) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "unable to delete shared attribute in shared storage") /* Extract updated shared message info from modified attribute, if requested */ if(update_sh_mesg) if(H5O_set_shared(update_sh_mesg, &(attr->sh_loc)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTCOPY, FAIL, "can't get shared message") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_update_shared() */ /*------------------------------------------------------------------------- * Function: H5O_attr_write_cb * * Purpose: Object header iterator callback routine to update an * attribute stored compactly. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 4 2006 * * Modification:Raymond Lu * 4 June 2008 * Took out the data copying part because the attribute data * is shared between attribute handle and object header. *------------------------------------------------------------------------- */ static herr_t H5O_attr_write_cb(H5O_t *oh, H5O_mesg_t *mesg/*in,out*/, unsigned UNUSED sequence, hbool_t *oh_modified, void *_udata/*in,out*/) { H5O_iter_wrt_t *udata = (H5O_iter_wrt_t *)_udata; /* Operator user data */ H5O_chunk_proxy_t *chk_proxy = NULL; /* Chunk that message is in */ hbool_t chk_dirtied = FALSE; /* Flag for unprotecting chunk */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_write_cb) /* check args */ HDassert(oh); HDassert(mesg); HDassert(!udata->found); /* Check for correct attribute message to modify */ if(0 == HDstrcmp(((H5A_t *)mesg->native)->shared->name, udata->attr->shared->name)) { /* Protect chunk */ if(NULL == (chk_proxy = H5O_chunk_protect(udata->f, udata->dxpl_id, oh, mesg->chunkno))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPROTECT, H5_ITER_ERROR, "unable to load object header chunk") /* Because the attribute structure is shared now. The only situation that requires * copying the data is when the metadata cache evicts and reloads this attribute. * The shared attribute structure will be different in that situation. SLU-2010/7/29 */ if(((H5A_t *)mesg->native)->shared != udata->attr->shared) { /* Sanity check */ HDassert(((H5A_t *)mesg->native)->shared->data); HDassert(udata->attr->shared->data); HDassert(((H5A_t *)mesg->native)->shared->data != udata->attr->shared->data); /* (Needs to occur before updating the shared message, or the hash * value on the old & new messages will be the same) */ HDmemcpy(((H5A_t *)mesg->native)->shared->data, udata->attr->shared->data, udata->attr->shared->data_size); } /* end if */ /* Mark the message as modified */ mesg->dirty = TRUE; chk_dirtied = TRUE; /* Release chunk */ if(H5O_chunk_unprotect(udata->f, udata->dxpl_id, chk_proxy, chk_dirtied) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to unprotect object header chunk") chk_proxy = NULL; /* Update the shared attribute in the SOHM storage */ if(mesg->flags & H5O_MSG_FLAG_SHARED) if(H5O_attr_update_shared(udata->f, udata->dxpl_id, oh, udata->attr, (H5O_shared_t *)mesg->native) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, H5_ITER_ERROR, "unable to update attribute in shared storage") /* Indicate that the object header was modified */ *oh_modified = TRUE; /* Indicate that the attribute was found */ udata->found = TRUE; /* Stop iterating */ ret_value = H5_ITER_STOP; } /* end if */ done: /* Release chunk, if not already done */ if(chk_proxy && H5O_chunk_unprotect(udata->f, udata->dxpl_id, chk_proxy, chk_dirtied) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to unprotect object header chunk") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_write_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_write * * Purpose: Write a new value to an attribute. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Monday, December 4, 2006 * *------------------------------------------------------------------------- */ herr_t H5O_attr_write(const H5O_loc_t *loc, hid_t dxpl_id, H5A_t *attr) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_write) /* Check arguments */ HDassert(loc); HDassert(attr); /* Pin the object header */ if(NULL == (oh = H5O_pin(loc, dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPIN, FAIL, "unable to pin object header") /* Check for attribute info stored */ ainfo.fheap_addr = HADDR_UNDEF; if(oh->version > H5O_VERSION_1) { /* Check for (& retrieve if available) attribute info */ if(H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") } /* end if */ /* Check for attributes stored densely */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Modify the attribute data in dense storage */ if(H5A_dense_write(loc->file, dxpl_id, &ainfo, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "error updating attribute") } /* end if */ else { H5O_iter_wrt_t udata; /* User data for callback */ H5O_mesg_operator_t op; /* Wrapper for operator */ /* Set up user data for callback */ udata.f = loc->file; udata.dxpl_id = dxpl_id; udata.attr = attr; udata.found = FALSE; /* Iterate over attributes, to locate correct one to update */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_write_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "error updating attribute") /* Check that we found the attribute */ if(!udata.found) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "can't locate open attribute?") } /* end else */ /* Update the modification time, if any */ if(H5O_touch_oh(loc->file, dxpl_id, oh, FALSE) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update time on object") done: if(oh && H5O_unpin(oh) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPIN, FAIL, "unable to unpin object header") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_write */ /*------------------------------------------------------------------------- * Function: H5O_attr_rename_chk_cb * * Purpose: Object header iterator callback routine to check for * duplicate name during rename * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 5 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_rename_chk_cb(H5O_t UNUSED *oh, H5O_mesg_t *mesg/*in,out*/, unsigned UNUSED sequence, hbool_t UNUSED *oh_modified, void *_udata/*in,out*/) { H5O_iter_ren_t *udata = (H5O_iter_ren_t *)_udata; /* Operator user data */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_attr_rename_chk_cb) /* check args */ HDassert(oh); HDassert(mesg); HDassert(!udata->found); /* Check for existing attribute with new name */ if(HDstrcmp(((H5A_t *)mesg->native)->shared->name, udata->new_name) == 0) { /* Indicate that we found an existing attribute with the new name*/ udata->found = TRUE; /* Stop iterating */ ret_value = H5_ITER_STOP; } /* end if */ FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_rename_chk_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_rename_mod_cb * * Purpose: Object header iterator callback routine to change name of * attribute during rename * * Note: This routine doesn't currently allow an attribute to change * its "shared" status, if the name change would cause a size * difference that would put it into a different category. * Something for later... * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 5 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_rename_mod_cb(H5O_t *oh, H5O_mesg_t *mesg/*in,out*/, unsigned UNUSED sequence, hbool_t *oh_modified, void *_udata/*in,out*/) { H5O_iter_ren_t *udata = (H5O_iter_ren_t *)_udata; /* Operator user data */ H5O_chunk_proxy_t *chk_proxy = NULL; /* Chunk that message is in */ hbool_t chk_dirtied = FALSE; /* Flag for unprotecting chunk */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_rename_mod_cb) /* check args */ HDassert(oh); HDassert(mesg); HDassert(!udata->found); /* Find correct attribute message to rename */ if(HDstrcmp(((H5A_t *)mesg->native)->shared->name, udata->old_name) == 0) { unsigned old_version = ((H5A_t *)mesg->native)->shared->version; /* Old version of the attribute */ /* Protect chunk */ if(NULL == (chk_proxy = H5O_chunk_protect(udata->f, udata->dxpl_id, oh, mesg->chunkno))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPROTECT, H5_ITER_ERROR, "unable to load object header chunk") /* Change the name for the attribute */ H5MM_xfree(((H5A_t *)mesg->native)->shared->name); ((H5A_t *)mesg->native)->shared->name = H5MM_xstrdup(udata->new_name); /* Recompute the version to encode the attribute with */ if(H5A_set_version(udata->f, ((H5A_t *)mesg->native)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTSET, H5_ITER_ERROR, "unable to update attribute version") /* Mark the message as modified */ mesg->dirty = TRUE; chk_dirtied = TRUE; /* Release chunk */ if(H5O_chunk_unprotect(udata->f, udata->dxpl_id, chk_proxy, chk_dirtied) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to unprotect object header chunk") chk_proxy = NULL; /* Check for shared message */ if(mesg->flags & H5O_MSG_FLAG_SHARED) { /* Update the shared attribute in the SOHM storage */ if(H5O_attr_update_shared(udata->f, udata->dxpl_id, oh, (H5A_t *)mesg->native, NULL) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, H5_ITER_ERROR, "unable to update attribute in shared storage") } /* end if */ else { /* Sanity check */ HDassert(H5O_msg_is_shared(H5O_ATTR_ID, (H5A_t *)mesg->native) == FALSE); /* Check for attribute message changing size */ if(HDstrlen(udata->new_name) != HDstrlen(udata->old_name) || old_version != ((H5A_t *)mesg->native)->shared->version) { H5A_t *attr; /* Attribute to re-add */ /* Take ownership of the message's native info (the attribute) * so any shared objects in the file aren't adjusted (and * possibly deleted) when the message is released. */ /* (We do this more complicated sequence of actions because the * simpler solution of adding the modified attribute first * and then deleting the old message can re-allocate the * list of messages during the "add the modified attribute" * step, invalidating the message pointer we have here - QAK) */ attr = (H5A_t *)mesg->native; mesg->native = NULL; /* Delete old attribute */ /* (doesn't decrement the link count on shared components becuase * the "native" pointer has been reset) */ if(H5O_release_mesg(udata->f, udata->dxpl_id, oh, mesg, FALSE) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, H5_ITER_ERROR, "unable to release previous attribute") /* Append renamed attribute to object header */ /* (Don't let it become shared) */ if(H5O_msg_append_real(udata->f, udata->dxpl_id, oh, H5O_MSG_ATTR, (mesg->flags | H5O_MSG_FLAG_DONTSHARE), 0, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINSERT, H5_ITER_ERROR, "unable to relocate renamed attribute in header") /* Sanity check */ HDassert(H5O_msg_is_shared(H5O_ATTR_ID, attr) == FALSE); /* Close the local copy of the attribute */ H5A_close(attr); } /* end if */ } /* end else */ /* Indicate that the object header was modified */ *oh_modified = TRUE; /* Indicate that we found an existing attribute with the old name */ udata->found = TRUE; /* Stop iterating */ ret_value = H5_ITER_STOP; } /* end if */ done: /* Release chunk, if not already done */ if(chk_proxy && H5O_chunk_unprotect(udata->f, udata->dxpl_id, chk_proxy, chk_dirtied) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, H5_ITER_ERROR, "unable to unprotect object header chunk") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_rename_mod_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_rename * * Purpose: Rename an attribute. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Tuesday, December 5, 2006 * *------------------------------------------------------------------------- */ herr_t H5O_attr_rename(const H5O_loc_t *loc, hid_t dxpl_id, const char *old_name, const char *new_name) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_rename) /* Check arguments */ HDassert(loc); HDassert(old_name); HDassert(new_name); /* Pin the object header */ if(NULL == (oh = H5O_pin(loc, dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPIN, FAIL, "unable to pin object header") /* Check for attribute info stored */ ainfo.fheap_addr = HADDR_UNDEF; if(oh->version > H5O_VERSION_1) { /* Check for (& retrieve if available) attribute info */ if(H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") } /* end if */ /* Check for attributes stored densely */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Rename the attribute data in dense storage */ if(H5A_dense_rename(loc->file, dxpl_id, &ainfo, old_name, new_name) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "error updating attribute") } /* end if */ else { H5O_iter_ren_t udata; /* User data for callback */ H5O_mesg_operator_t op; /* Wrapper for operator */ /* Set up user data for callback */ udata.f = loc->file; udata.dxpl_id = dxpl_id; udata.old_name = old_name; udata.new_name = new_name; udata.found = FALSE; /* Iterate over attributes, to check if "new name" exists already */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_rename_chk_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "error updating attribute") /* If the new name was found, indicate an error */ if(udata.found) HGOTO_ERROR(H5E_ATTR, H5E_EXISTS, FAIL, "attribute with new name already exists") /* Iterate over attributes again, to actually rename attribute with old name */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_rename_mod_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "error updating attribute") /* Check that we found the attribute to rename */ if(!udata.found) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "can't locate attribute with old name") } /* end else */ /* Update the modification time, if any */ if(H5O_touch_oh(loc->file, dxpl_id, oh, FALSE) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update time on object") done: if(oh && H5O_unpin(oh) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPIN, FAIL, "unable to unpin object header") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_rename */ /*------------------------------------------------------------------------- * Function: H5O_attr_iterate_real * * Purpose: Internal routine to iterate over attributes for an object. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Tuesday, December 5, 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_iterate_real(hid_t loc_id, const H5O_loc_t *loc, hid_t dxpl_id, H5_index_t idx_type, H5_iter_order_t order, hsize_t skip, hsize_t *last_attr, const H5A_attr_iter_op_t *attr_op, void *op_data) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ H5A_attr_table_t atable = {0, NULL}; /* Table of attributes */ herr_t ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_iterate_real) /* Check arguments */ HDassert(loc); HDassert(loc->file); HDassert(H5F_addr_defined(loc->addr)); HDassert(attr_op); /* Protect the object header to iterate over */ if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC_READ))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPROTECT, FAIL, "unable to load object header") /* Check for attribute info stored */ ainfo.fheap_addr = HADDR_UNDEF; if(oh->version > H5O_VERSION_1) { /* Check for (& retrieve if available) attribute info */ if(H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") } /* end if */ /* Check for attributes stored densely */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Check for skipping too many attributes */ if(skip > 0 && skip >= ainfo.nattrs) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index specified") /* Release the object header */ if(H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") oh = NULL; /* Iterate over attributes in dense storage */ if((ret_value = H5A_dense_iterate(loc->file, dxpl_id, loc_id, &ainfo, idx_type, order, skip, last_attr, attr_op, op_data)) < 0) HERROR(H5E_ATTR, H5E_BADITER, "error iterating over attributes"); } /* end if */ else { /* Build table of attributes for compact storage */ if(H5A_compact_build_table(loc->file, dxpl_id, oh, idx_type, order, &atable) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "error building attribute table") /* Release the object header */ if(H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") oh = NULL; /* Check for skipping too many attributes */ if(skip > 0 && skip >= atable.nattrs) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index specified") /* Iterate over attributes in table */ if((ret_value = H5A_attr_iterate_table(&atable, skip, last_attr, loc_id, attr_op, op_data)) < 0) HERROR(H5E_ATTR, H5E_CANTNEXT, "iteration operator failed"); } /* end else */ done: /* Release resources */ if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") if(atable.attrs && H5A_attr_release_table(&atable) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "unable to release attribute table") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_iterate_real() */ /*------------------------------------------------------------------------- * Function: H5O_attr_iterate * * Purpose: Iterate over attributes for an object. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Tuesday, December 5, 2006 * *------------------------------------------------------------------------- */ herr_t H5O_attr_iterate(hid_t loc_id, hid_t dxpl_id, H5_index_t idx_type, H5_iter_order_t order, hsize_t skip, hsize_t *last_attr, const H5A_attr_iter_op_t *attr_op, void *op_data) { H5G_loc_t loc; /* Object location */ herr_t ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_iterate) /* Check arguments */ HDassert(attr_op); /* Look up location for location ID */ if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") /* Iterate over attributes to locate correct one */ if((ret_value = H5O_attr_iterate_real(loc_id, loc.oloc, dxpl_id, idx_type, order, skip, last_attr, attr_op, op_data)) < 0) HERROR(H5E_ATTR, H5E_BADITER, "error iterating over attributes"); done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_iterate() */ /*------------------------------------------------------------------------- * Function: H5O_attr_remove_update * * Purpose: Check for reverting from dense to compact attribute storage * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Wednesday, February 14, 2007 * * Modification:Raymond Lu * 24 June 2008 * When converting storage from dense to compact, if found * the attribute is already opened, use the opened message * to insert. If not, still use the message in the attribute * table. This will guarantee that the attribute message is * shared between the object in metadata cache and the opened * object. *------------------------------------------------------------------------- */ static herr_t H5O_attr_remove_update(const H5O_loc_t *loc, H5O_t *oh, H5O_ainfo_t *ainfo, hid_t dxpl_id) { H5A_attr_table_t atable = {0, NULL}; /* Table of attributes */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_remove_update) /* Check arguments */ HDassert(loc); HDassert(oh); HDassert(ainfo); /* Decrement the number of attributes on the object */ ainfo->nattrs--; /* Check for shifting from dense storage back to compact storage */ if(H5F_addr_defined(ainfo->fheap_addr) && ainfo->nattrs < oh->min_dense) { hbool_t can_convert = TRUE; /* Whether converting to attribute messages is possible */ size_t u; /* Local index */ /* Build the table of attributes for this object */ if(H5A_dense_build_table(loc->file, dxpl_id, ainfo, H5_INDEX_NAME, H5_ITER_NATIVE, &atable) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "error building attribute table") /* Inspect attributes in table for ones that can't be converted back * into attribute message form (currently only attributes which * can't fit into an object header message) */ for(u = 0; u < ainfo->nattrs; u++) if(H5O_msg_size_oh(loc->file, oh, H5O_ATTR_ID, (atable.attrs[u]), (size_t)0) >= H5O_MESG_MAX_SIZE) { can_convert = FALSE; break; } /* end if */ /* If ok, insert attributes as object header messages */ if(can_convert) { H5A_t *exist_attr = NULL; htri_t found_open_attr = FALSE; /* Iterate over attributes, to put them into header */ for(u = 0; u < ainfo->nattrs; u++) { htri_t shared_mesg; /* Should this message be stored in the Shared Message table? */ /* Check if attribute is shared */ if((shared_mesg = H5O_msg_is_shared(H5O_ATTR_ID, (atable.attrs[u]))) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "error determining if message is shared") else if(shared_mesg == 0) { /* Increment reference count on attribute components */ /* (so that they aren't deleted when the dense attribute storage is deleted) */ if(H5O_attr_link(loc->file, dxpl_id, oh, (atable.attrs[u])) < 0) HGOTO_ERROR(H5E_ATTR, H5E_LINKCOUNT, FAIL, "unable to adjust attribute link count") } /* end if */ else { /* Reset 'shared' status, so attribute will be shared again */ (atable.attrs[u])->sh_loc.type = H5O_SHARE_TYPE_UNSHARED; } /* end else */ /* Insert attribute message into object header (Will increment reference count on shared attributes) */ /* Find out whether the attribute has been opened */ if((found_open_attr = H5O_attr_find_opened_attr(loc, &exist_attr, (atable.attrs[u])->shared->name)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "failed in finding opened attribute") /* If found the attribute is already opened, use the opened message to insert. If not, still use the message in the attribute table. */ if(found_open_attr && exist_attr) { if(H5O_msg_append_real(loc->file, dxpl_id, oh, H5O_MSG_ATTR, 0, 0, exist_attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "can't create message") } else { if(H5O_msg_append_real(loc->file, dxpl_id, oh, H5O_MSG_ATTR, 0, 0, (atable.attrs[u])) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "can't create message") } } /* end for */ /* Remove the dense storage */ if(H5A_dense_delete(loc->file, dxpl_id, ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete dense attribute storage") } /* end if */ } /* end if */ /* Check if we have deleted all the attributes and the attribute info * message should be deleted itself. */ if(ainfo->nattrs == 0) { if(H5O_msg_remove_real(loc->file, oh, H5O_MSG_AINFO, H5O_ALL, NULL, NULL, TRUE, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete attribute info") } /* end if */ else { if(H5O_msg_write_real(loc->file, dxpl_id, oh, H5O_MSG_AINFO, H5O_MSG_FLAG_DONTSHARE, 0, ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update attribute info message") } /* end else */ done: /* Release resources */ if(atable.attrs && H5A_attr_release_table(&atable) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "unable to release attribute table") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_remove_update() */ /*------------------------------------------------------------------------- * Function: H5O_attr_remove_cb * * Purpose: Object header iterator callback routine to remove an * attribute stored compactly. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 11 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_remove_cb(H5O_t *oh, H5O_mesg_t *mesg/*in,out*/, unsigned UNUSED sequence, hbool_t *oh_modified, void *_udata/*in,out*/) { H5O_iter_rm_t *udata = (H5O_iter_rm_t *)_udata; /* Operator user data */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_remove_cb) /* check args */ HDassert(oh); HDassert(mesg); HDassert(!udata->found); /* Check for correct attribute message to modify */ if(HDstrcmp(((H5A_t *)mesg->native)->shared->name, udata->name) == 0) { /* Convert message into a null message (i.e. delete it) */ if(H5O_release_mesg(udata->f, udata->dxpl_id, oh, mesg, TRUE) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, H5_ITER_ERROR, "unable to convert into null message") /* Indicate that the object header was modified */ *oh_modified = TRUE; /* Indicate that this message is the attribute to be deleted */ udata->found = TRUE; /* Stop iterating */ ret_value = H5_ITER_STOP; } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_remove_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_remove * * Purpose: Delete an attribute on an object. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Monday, December 11, 2006 * *------------------------------------------------------------------------- */ herr_t H5O_attr_remove(const H5O_loc_t *loc, const char *name, hid_t dxpl_id) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ htri_t ainfo_exists = FALSE; /* Whether the attribute info exists in the file */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_remove) /* Check arguments */ HDassert(loc); HDassert(name); /* Pin the object header */ if(NULL == (oh = H5O_pin(loc, dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPIN, FAIL, "unable to pin object header") /* Check for attribute info stored */ ainfo.fheap_addr = HADDR_UNDEF; if(oh->version > H5O_VERSION_1) { /* Check for (& retrieve if available) attribute info */ if((ainfo_exists = H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") } /* end if */ /* Check for attributes stored densely */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Delete attribute from dense storage */ if(H5A_dense_remove(loc->file, dxpl_id, &ainfo, name) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete attribute in dense storage") } /* end if */ else { H5O_iter_rm_t udata; /* User data for callback */ H5O_mesg_operator_t op; /* Wrapper for operator */ /* Set up user data for callback */ udata.f = loc->file; udata.dxpl_id = dxpl_id; udata.name = name; udata.found = FALSE; /* Iterate over attributes, to locate correct one to delete */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_remove_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "error deleting attribute") /* Check that we found the attribute */ if(!udata.found) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "can't locate attribute") } /* end else */ /* Update the attribute information after removing an attribute */ if(ainfo_exists) if(H5O_attr_remove_update(loc, oh, &ainfo, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update attribute info") /* Update the modification time, if any */ if(H5O_touch_oh(loc->file, dxpl_id, oh, FALSE) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update time on object") done: if(oh && H5O_unpin(oh) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPIN, FAIL, "unable to unpin object header") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_remove() */ /*------------------------------------------------------------------------- * Function: H5O_attr_remove_by_idx * * Purpose: Delete an attribute on an object, according to an order within * an index. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Wednesday, February 14, 2007 * *------------------------------------------------------------------------- */ herr_t H5O_attr_remove_by_idx(const H5O_loc_t *loc, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t dxpl_id) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ htri_t ainfo_exists = FALSE; /* Whether the attribute info exists in the file */ H5A_attr_table_t atable = {0, NULL}; /* Table of attributes */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_remove_by_idx) /* Check arguments */ HDassert(loc); /* Pin the object header */ if(NULL == (oh = H5O_pin(loc, dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPIN, FAIL, "unable to pin object header") /* Check for attribute info stored */ ainfo.fheap_addr = HADDR_UNDEF; if(oh->version > H5O_VERSION_1) { /* Check for (& retrieve if available) attribute info */ if((ainfo_exists = H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") } /* end if */ /* Check for attributes stored densely */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Delete attribute from dense storage */ if(H5A_dense_remove_by_idx(loc->file, dxpl_id, &ainfo, idx_type, order, n) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete attribute in dense storage") } /* end if */ else { H5O_iter_rm_t udata; /* User data for callback */ H5O_mesg_operator_t op; /* Wrapper for operator */ /* Build table of attributes for compact storage */ if(H5A_compact_build_table(loc->file, dxpl_id, oh, idx_type, order, &atable) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "error building attribute table") /* Check for skipping too many attributes */ if(n >= atable.nattrs) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index specified") /* Set up user data for callback, to remove the attribute by name */ udata.f = loc->file; udata.dxpl_id = dxpl_id; udata.name = ((atable.attrs[n])->shared)->name; udata.found = FALSE; /* Iterate over attributes, to locate correct one to delete */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_remove_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "error deleting attribute") /* Check that we found the attribute */ if(!udata.found) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "can't locate attribute") } /* end else */ /* Update the attribute information after removing an attribute */ if(ainfo_exists) if(H5O_attr_remove_update(loc, oh, &ainfo, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update attribute info") /* Update the modification time, if any */ if(H5O_touch_oh(loc->file, dxpl_id, oh, FALSE) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTUPDATE, FAIL, "unable to update time on object") done: if(oh && H5O_unpin(oh) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPIN, FAIL, "unable to unpin object header") if(atable.attrs && H5A_attr_release_table(&atable) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "unable to release attribute table") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_remove_by_idx() */ /*------------------------------------------------------------------------- * Function: H5O_attr_count_real * * Purpose: Determine the # of attributes on an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Thursday, March 9, 2007 * *------------------------------------------------------------------------- */ herr_t H5O_attr_count_real(H5F_t *f, hid_t dxpl_id, H5O_t *oh, hsize_t *nattrs) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_count_real) /* Check arguments */ HDassert(f); HDassert(oh); HDassert(nattrs); /* Check for attributes stored densely */ if(oh->version > H5O_VERSION_1) { htri_t ainfo_exists = FALSE; /* Whether the attribute info exists in the file */ H5O_ainfo_t ainfo; /* Attribute information for object */ /* Attempt to get the attribute information from the object header */ if((ainfo_exists = H5A_get_ainfo(f, dxpl_id, oh, &ainfo)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") else if(ainfo_exists > 0) *nattrs = ainfo.nattrs; else *nattrs = 0; } /* end if */ else { hsize_t attr_count; /* Number of attributes found */ unsigned u; /* Local index variable */ /* Loop over all messages, counting the attributes */ attr_count = 0; for(u = 0; u < oh->nmesgs; u++) if(oh->mesg[u].type == H5O_MSG_ATTR) attr_count++; *nattrs = attr_count; } /* end else */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_count_real */ /*------------------------------------------------------------------------- * Function: H5O_attr_exists_cb * * Purpose: Object header iterator callback routine to check for an * attribute stored compactly, by name. * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * koziol@hdfgroup.org * Dec 11 2006 * *------------------------------------------------------------------------- */ static herr_t H5O_attr_exists_cb(H5O_t UNUSED *oh, H5O_mesg_t *mesg/*in,out*/, unsigned UNUSED sequence, hbool_t UNUSED *oh_modified, void *_udata/*in,out*/) { H5O_iter_rm_t *udata = (H5O_iter_rm_t *)_udata; /* Operator user data */ herr_t ret_value = H5_ITER_CONT; /* Return value */ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_attr_exists_cb) /* check args */ HDassert(mesg); HDassert(!udata->found); /* Check for correct attribute message */ if(HDstrcmp(((H5A_t *)mesg->native)->shared->name, udata->name) == 0) { /* Indicate that this message is the attribute sought */ udata->found = TRUE; /* Stop iterating */ ret_value = H5_ITER_STOP; } /* end if */ FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_exists_cb() */ /*------------------------------------------------------------------------- * Function: H5O_attr_exists * * Purpose: Determine if an attribute with a particular name exists on an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Monday, December 11, 2006 * *------------------------------------------------------------------------- */ htri_t H5O_attr_exists(const H5O_loc_t *loc, const char *name, hid_t dxpl_id) { H5O_t *oh = NULL; /* Pointer to actual object header */ H5O_ainfo_t ainfo; /* Attribute information for object */ htri_t ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_exists) /* Check arguments */ HDassert(loc); HDassert(name); /* Protect the object header to iterate over */ if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC_READ))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPROTECT, FAIL, "unable to load object header") /* Check for attribute info stored */ ainfo.fheap_addr = HADDR_UNDEF; if(oh->version > H5O_VERSION_1) { /* Check for (& retrieve if available) attribute info */ if(H5A_get_ainfo(loc->file, dxpl_id, oh, &ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") } /* end if */ /* Check for attributes stored densely */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Check if attribute exists in dense storage */ if((ret_value = H5A_dense_exists(loc->file, dxpl_id, &ainfo, name)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_BADITER, FAIL, "error checking for existence of attribute") } /* end if */ else { H5O_iter_rm_t udata; /* User data for callback */ H5O_mesg_operator_t op; /* Wrapper for operator */ /* Set up user data for callback */ udata.f = loc->file; udata.dxpl_id = dxpl_id; udata.name = name; udata.found = FALSE; /* Iterate over existing attributes, checking for attribute with same name */ op.op_type = H5O_MESG_OP_LIB; op.u.lib_op = H5O_attr_exists_cb; if(H5O_msg_iterate_real(loc->file, oh, H5O_MSG_ATTR, &op, &udata, dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_BADITER, FAIL, "error checking for existence of attribute") /* Check that we found the attribute */ ret_value = (htri_t)udata.found; } /* end else */ done: if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_exists */ /*------------------------------------------------------------------------- * Function: H5O_attr_bh_info * * Purpose: For 1.8 attribute, returns storage amount for btree and fractal heap * * Return: Non-negative on success/Negative on failure * * Programmer: Vailin Choi * June 19, 2007 * *------------------------------------------------------------------------- */ herr_t H5O_attr_bh_info(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5_ih_info_t *bh_info) { H5HF_t *fheap = NULL; /* Fractal heap handle */ H5B2_t *bt2_name = NULL; /* v2 B-tree handle for name index */ H5B2_t *bt2_corder = NULL; /* v2 B-tree handle for creation order index */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(H5O_attr_bh_info, FAIL) HDassert(f); HDassert(oh); HDassert(bh_info); /* Attributes are only stored in fractal heap & indexed w/v2 B-tree in later versions */ if(oh->version > H5O_VERSION_1) { H5O_ainfo_t ainfo; /* Attribute information for object */ htri_t ainfo_exists = FALSE; /* Whether the attribute info exists in the file */ /* Check for (& retrieve if available) attribute info */ if((ainfo_exists = H5A_get_ainfo(f, dxpl_id, oh, &ainfo)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't check for attribute info message") else if(ainfo_exists > 0) { /* Check if name index available */ if(H5F_addr_defined(ainfo.name_bt2_addr)) { /* Open the name index v2 B-tree */ if(NULL == (bt2_name = H5B2_open(f, dxpl_id, ainfo.name_bt2_addr, NULL))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for name index") /* Get name index B-tree size */ if(H5B2_size(bt2_name, dxpl_id, &(bh_info->index_size)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't retrieve B-tree storage info") } /* end if */ /* Check if creation order index available */ if(H5F_addr_defined(ainfo.corder_bt2_addr)) { /* Open the creation order index v2 B-tree */ if(NULL == (bt2_corder = H5B2_open(f, dxpl_id, ainfo.corder_bt2_addr, NULL))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open v2 B-tree for creation order index") /* Get creation order index B-tree size */ if(H5B2_size(bt2_corder, dxpl_id, &(bh_info->index_size)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't retrieve B-tree storage info") } /* end if */ /* Get storage size of fractal heap, if it's used */ if(H5F_addr_defined(ainfo.fheap_addr)) { /* Open the fractal heap for attributes */ if(NULL == (fheap = H5HF_open(f, dxpl_id, ainfo.fheap_addr))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap") /* Get heap storage size */ if(H5HF_size(fheap, dxpl_id, &(bh_info->heap_size)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't retrieve B-tree storage info") } /* end if */ } /* end else */ } /* end if */ done: /* Release resources */ if(fheap && H5HF_close(fheap, dxpl_id) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTCLOSEOBJ, FAIL, "can't close fractal heap") if(bt2_name && H5B2_close(bt2_name, dxpl_id) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTCLOSEOBJ, FAIL, "can't close v2 B-tree for name index") if(bt2_corder && H5B2_close(bt2_corder, dxpl_id) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTCLOSEOBJ, FAIL, "can't close v2 B-tree for creation order index") FUNC_LEAVE_NOAPI(ret_value) } /* H5O_attr_bh_info() */ #ifndef H5_NO_DEPRECATED_SYMBOLS /*------------------------------------------------------------------------- * Function: H5O_attr_count * * Purpose: Determine the # of attributes on an object * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Monday, December 11, 2006 * *------------------------------------------------------------------------- */ int H5O_attr_count(const H5O_loc_t *loc, hid_t dxpl_id) { H5O_t *oh = NULL; /* Pointer to actual object header */ hsize_t nattrs; /* Number of attributes */ int ret_value; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5O_attr_count) /* Check arguments */ HDassert(loc); /* Protect the object header to iterate over */ if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC_READ))) HGOTO_ERROR(H5E_ATTR, H5E_CANTPROTECT, FAIL, "unable to load object header") /* Retrieve # of attributes on object */ if(H5O_attr_count_real(loc->file, dxpl_id, oh, &nattrs) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't retrieve attribute count") /* Set return value */ ret_value = (int)nattrs; done: if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_attr_count */ #endif /* H5_NO_DEPRECATED_SYMBOLS */