diff options
Diffstat (limited to 'src/H5O.c')
| -rw-r--r-- | src/H5O.c | 2739 |
1 files changed, 20 insertions, 2719 deletions
@@ -13,11 +13,9 @@ /*------------------------------------------------------------------------- * - * Created: H5O.c - * Aug 5 1997 - * Robb Matzke <matzke@llnl.gov> + * Created: H5O.c * - * Purpose: Object header routines. + * Purpose: Public object header routines * *------------------------------------------------------------------------- */ @@ -32,19 +30,12 @@ /***********/ /* Headers */ /***********/ -#include "H5private.h" /* Generic Functions */ -#include "H5Eprivate.h" /* Error handling */ -#include "H5Fprivate.h" /* File access */ -#include "H5FLprivate.h" /* Free lists */ -#include "H5FOprivate.h" /* File objects */ -#include "H5Iprivate.h" /* IDs */ -#include "H5Lprivate.h" /* Links */ -#include "H5MFprivate.h" /* File memory management */ -#ifdef H5O_ENABLE_BOGUS -#include "H5MMprivate.h" /* Memory management */ -#endif /* H5O_ENABLE_BOGUS */ -#include "H5Opkg.h" /* Object headers */ -#include "H5SMprivate.h" /* Shared object header messages */ +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Fprivate.h" /* File access */ +#include "H5Iprivate.h" /* IDs */ +#include "H5Lprivate.h" /* Links */ +#include "H5Opkg.h" /* Object headers */ /****************/ @@ -56,17 +47,6 @@ /* Local Typedefs */ /******************/ -/* User data for recursive traversal over objects from a group */ -typedef struct { - hid_t obj_id; /* The ID for the starting group */ - H5G_loc_t *start_loc; /* Location of starting group */ - hid_t lapl_id; /* LAPL for walking across links */ - hid_t dxpl_id; /* DXPL for operations */ - H5SL_t *visited; /* Skip list for tracking visited nodes */ - H5O_iterate_t op; /* Application callback */ - void *op_data; /* Application's op data */ -} H5O_iter_visit_ud_t; - /********************/ /* Package Typedefs */ @@ -77,144 +57,21 @@ typedef struct { /* Local Prototypes */ /********************/ -static herr_t H5O_delete_oh(H5F_t *f, hid_t dxpl_id, H5O_t *oh); -static herr_t H5O_obj_type_real(H5O_t *oh, H5O_type_t *obj_type); -static herr_t H5O_visit(hid_t loc_id, const char *obj_name, H5_index_t idx_type, - H5_iter_order_t order, H5O_iterate_t op, void *op_data, hid_t lapl_id, - hid_t dxpl_id); -static herr_t H5O_get_hdr_info_real(const H5O_t *oh, H5O_hdr_info_t *hdr); -static const H5O_obj_class_t *H5O_obj_class_real(H5O_t *oh); - /*********************/ /* Package Variables */ /*********************/ -/* Package initialization variable */ -hbool_t H5_PKG_INIT_VAR = FALSE; - -/* Header message ID to class mapping */ - -/* Remember to increment H5O_MSG_TYPES in H5Opkg.h when adding a new - * message. - */ - -const H5O_msg_class_t *const H5O_msg_class_g[] = { - H5O_MSG_NULL, /*0x0000 Null */ - H5O_MSG_SDSPACE, /*0x0001 Dataspace */ - H5O_MSG_LINFO, /*0x0002 Link information */ - H5O_MSG_DTYPE, /*0x0003 Datatype */ - H5O_MSG_FILL, /*0x0004 Old data storage -- fill value */ - H5O_MSG_FILL_NEW, /*0x0005 New data storage -- fill value */ - H5O_MSG_LINK, /*0x0006 Link */ - H5O_MSG_EFL, /*0x0007 Data storage -- external data files */ - H5O_MSG_LAYOUT, /*0x0008 Data Layout */ -#ifdef H5O_ENABLE_BOGUS - H5O_MSG_BOGUS_VALID, /*0x0009 "Bogus valid" (for testing) */ -#else /* H5O_ENABLE_BOGUS */ - NULL, /*0x0009 "Bogus valid" (for testing) */ -#endif /* H5O_ENABLE_BOGUS */ - H5O_MSG_GINFO, /*0x000A Group information */ - H5O_MSG_PLINE, /*0x000B Data storage -- filter pipeline */ - H5O_MSG_ATTR, /*0x000C Attribute */ - H5O_MSG_NAME, /*0x000D Object name */ - H5O_MSG_MTIME, /*0x000E Object modification date and time */ - H5O_MSG_SHMESG, /*0x000F File-wide shared message table */ - H5O_MSG_CONT, /*0x0010 Object header continuation */ - H5O_MSG_STAB, /*0x0011 Symbol table */ - H5O_MSG_MTIME_NEW, /*0x0012 New Object modification date and time */ - H5O_MSG_BTREEK, /*0x0013 Non-default v1 B-tree 'K' values */ - H5O_MSG_DRVINFO, /*0x0014 Driver info settings */ - H5O_MSG_AINFO, /*0x0015 Attribute information */ - H5O_MSG_REFCOUNT, /*0x0016 Object's ref. count */ - H5O_MSG_FSINFO, /*0x0017 Free-space manager info */ - H5O_MSG_MDCI, /*0x0018 Metadata cache image */ - H5O_MSG_UNKNOWN, /*0x0019 Placeholder for unknown message */ -#ifdef H5O_ENABLE_BOGUS - H5O_MSG_BOGUS_INVALID, /*0x001A "Bogus invalid" (for testing) */ -#else /* H5O_ENABLE_BOGUS */ - NULL, /*0x001A "Bogus invalid" (for testing) */ -#endif /* H5O_ENABLE_BOGUS */ -}; - - -/* Declare a free list to manage the H5O_t struct */ -H5FL_DEFINE(H5O_t); - -/* Declare a free list to manage the H5O_mesg_t sequence information */ -H5FL_SEQ_DEFINE(H5O_mesg_t); - -/* Declare a free list to manage the H5O_chunk_t sequence information */ -H5FL_SEQ_DEFINE(H5O_chunk_t); - -/* Declare a free list to manage the chunk image information */ -H5FL_BLK_DEFINE(chunk_image); - -/* Declare external the free list for H5O_cont_t sequences */ -H5FL_SEQ_EXTERN(H5O_cont_t); - /*****************************/ /* Library Private Variables */ /*****************************/ -/* Declare external the free list for time_t's */ -H5FL_EXTERN(time_t); - -/* Declare external the free list for H5_obj_t's */ -H5FL_EXTERN(H5_obj_t); - /*******************/ /* Local Variables */ /*******************/ -/* Header object ID to class mapping */ -/* - * Initialize the object class info table. Begin with the most general types - * and end with the most specific. For instance, any object that has a - * datatype message is a datatype but only some of them are datasets. - */ -static const H5O_obj_class_t *const H5O_obj_class_g[] = { - H5O_OBJ_DATATYPE, /* Datatype object (H5O_TYPE_NAMED_DATATYPE - 2) */ - H5O_OBJ_DATASET, /* Dataset object (H5O_TYPE_DATASET - 1) */ - H5O_OBJ_GROUP, /* Group object (H5O_TYPE_GROUP - 0) */ -}; - -/* Format version bounds for object header */ -static const unsigned H5O_obj_ver_bounds[] = { - H5O_VERSION_1, /* H5F_LIBVER_EARLIEST */ - H5O_VERSION_2, /* H5F_LIBVER_V18 */ - H5O_VERSION_LATEST /* H5F_LIBVER_LATEST */ -}; - - -/*------------------------------------------------------------------------- - * Function: H5O__init_package - * - * Purpose: Initialize information specific to H5O interface. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Thursday, January 18, 2007 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O__init_package(void) -{ - FUNC_ENTER_PACKAGE_NOERR - - /* H5O interface sanity checks */ - HDcompile_assert(H5O_MSG_TYPES == NELMTS(H5O_msg_class_g)); - HDcompile_assert(sizeof(H5O_fheap_id_t) == H5O_FHEAP_ID_LEN); - - HDcompile_assert(H5O_UNKNOWN_ID < H5O_MSG_TYPES); - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5O__init_package() */ - /*------------------------------------------------------------------------- * Function: H5Oopen @@ -309,11 +166,11 @@ H5Oopen_by_idx(hid_t loc_id, const char *group_name, H5_index_t idx_type, if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!group_name || !*group_name) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") /* Verify access property list and get correct dxpl */ if(H5P_verify_apl_and_dxpl(&lapl_id, H5P_CLS_LACC, &dxpl_id, loc_id, FALSE) < 0) @@ -717,11 +574,11 @@ H5Oget_info_by_idx(hid_t loc_id, const char *group_name, H5_index_t idx_type, if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!group_name || !*group_name) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(!oinfo) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no info struct") @@ -965,15 +822,15 @@ H5Ovisit(hid_t obj_id, H5_index_t idx_type, H5_iter_order_t order, /* Check args */ if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(!op) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no callback operator specified") /* Call internal object visitation routine */ if((ret_value = H5O_visit(obj_id, ".", idx_type, order, op, op_data, H5P_LINK_ACCESS_DEFAULT, H5AC_ind_read_dxpl_id)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "object visitation failed") + HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "object visitation failed") done: FUNC_LEAVE_API(ret_value) @@ -1027,9 +884,9 @@ H5Ovisit_by_name(hid_t loc_id, const char *obj_name, H5_index_t idx_type, if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(!op) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no callback operator specified") @@ -1039,7 +896,7 @@ H5Ovisit_by_name(hid_t loc_id, const char *obj_name, H5_index_t idx_type, /* Call internal object visitation routine */ if((ret_value = H5O_visit(loc_id, obj_name, idx_type, order, op, op_data, lapl_id, dxpl_id)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "object visitation failed") + HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "object visitation failed") done: FUNC_LEAVE_API(ret_value) @@ -1219,2559 +1076,3 @@ done: FUNC_LEAVE_API(ret_value) } /* H5Oare_mdc_flushes_disabled() */ - -/*------------------------------------------------------------------------- - * Function: H5O_set_version - * - * Purpose: Sets the correct version to encode the object header. - * Chooses the oldest version possible, unless the file's - * low bound indicates otherwise. - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * koziol@hdfgroup.org - * Jul 17 2007 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5O_set_version(H5F_t *f, H5O_t *oh, uint8_t oh_flags, hbool_t store_msg_crt_idx) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check arguments */ - HDassert(f); - HDassert(oh); - - /* Set the correct version to encode object header with */ - if(store_msg_crt_idx || (oh_flags & H5O_HDR_ATTR_CRT_ORDER_TRACKED)) - oh->version = H5O_VERSION_2; - else - oh->version = H5O_VERSION_1; - - /* Upgrade to the version indicated by the file's low bound if higher */ - oh->version = MAX(oh->version, (uint8_t)H5O_obj_ver_bounds[H5F_LOW_BOUND(f)]); - - /* File bound check */ - if(oh->version > H5O_obj_ver_bounds[H5F_HIGH_BOUND(f)]) - HGOTO_ERROR(H5E_OHDR, H5E_BADRANGE, FAIL, "object header version out of bounds") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_set_version() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_create - * - * Purpose: Creates a new object header. Allocates space for it and - * then calls an initialization function. The object header - * is opened for write access and should eventually be - * closed by calling H5O_close(). - * - * Return: Success: Non-negative, the ENT argument contains - * information about the object header, - * including its address. - * - * Failure: Negative - * - * Programmer: Robb Matzke - * matzke@llnl.gov - * Aug 5 1997 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_create(H5F_t *f, hid_t dxpl_id, size_t size_hint, size_t initial_rc, - hid_t ocpl_id, H5O_loc_t *loc/*out*/) -{ - H5P_genplist_t *oc_plist; /* Object creation property list */ - H5O_t *oh = NULL; /* Object header created */ - haddr_t oh_addr; /* Address of initial object header */ - size_t oh_size; /* Size of initial object header */ - hbool_t store_msg_crt_idx; /* Whether to always store message creation indices for this file */ - uint8_t oh_flags; /* Object header's initial status flags */ - unsigned insert_flags = H5AC__NO_FLAGS_SET; /* Flags for inserting object header into cache */ - herr_t ret_value = SUCCEED; /* return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(f); - HDassert(loc); - HDassert(TRUE == H5P_isa_class(ocpl_id, H5P_OBJECT_CREATE)); - - /* Check for invalid access request */ - if(0 == (H5F_INTENT(f) & H5F_ACC_RDWR)) - HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, FAIL, "no write intent on file") - - /* Make certain we allocate at least a reasonable size for the object header */ - size_hint = H5O_ALIGN_F(f, MAX(H5O_MIN_SIZE, size_hint)); - - /* Get the property list */ - if(NULL == (oc_plist = (H5P_genplist_t *)H5I_object(ocpl_id))) - HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "not a property list") - - /* Get any object header status flags set by properties */ - if(H5P_get(oc_plist, H5O_CRT_OHDR_FLAGS_NAME, &oh_flags) < 0) - HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get object header flags") - - /* Allocate the object header and zero out header fields */ - if(NULL == (oh = H5FL_CALLOC(H5O_t))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") - - /* Initialize file-specific information for object header */ - store_msg_crt_idx = H5F_STORE_MSG_CRT_IDX(f); - - if(H5O_set_version(f, oh, oh_flags, store_msg_crt_idx) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set version of objecdt header") - - oh->sizeof_size = H5F_SIZEOF_SIZE(f); - oh->sizeof_addr = H5F_SIZEOF_ADDR(f); - oh->swmr_write = !!(H5F_INTENT(f) & H5F_ACC_SWMR_WRITE); -#ifdef H5O_ENABLE_BAD_MESG_COUNT - /* Check whether the "bad message count" property is set */ - if(H5P_exist_plist(oc_plist, H5O_BAD_MESG_COUNT_NAME) > 0) { - /* Retrieve bad message count flag */ - if(H5P_get(oc_plist, H5O_BAD_MESG_COUNT_NAME, &oh->store_bad_mesg_count) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't get bad message count flag") - } /* end if */ -#endif /* H5O_ENABLE_BAD_MESG_COUNT */ - - /* Create object header proxy if doing SWMR writes */ - if(oh->swmr_write) { - /* Create virtual entry, for use as proxy */ - if(NULL == (oh->proxy = H5AC_proxy_entry_create())) - HGOTO_ERROR(H5E_OHDR, H5E_CANTCREATE, FAIL, "can't create object header proxy") - } /* end if */ - else - oh->proxy = NULL; - - /* Set initial status flags */ - oh->flags = oh_flags; - - /* Initialize version-specific fields */ - if(oh->version > H5O_VERSION_1) { - /* Initialize all time fields with current time, if we are storing them */ - if(oh->flags & H5O_HDR_STORE_TIMES) - oh->atime = oh->mtime = oh->ctime = oh->btime = H5_now(); - else - oh->atime = oh->mtime = oh->ctime = oh->btime = 0; - - /* Make certain attribute creation order tracking is enabled if - * attributes can be shared in this file. - */ - if(store_msg_crt_idx) - oh->flags |= H5O_HDR_ATTR_CRT_ORDER_TRACKED; - - /* Retrieve attribute storage phase change values from property list */ - if(H5P_get(oc_plist, H5O_CRT_ATTR_MAX_COMPACT_NAME, &oh->max_compact) < 0) - HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get max. # of compact attributes") - if(H5P_get(oc_plist, H5O_CRT_ATTR_MIN_DENSE_NAME, &oh->min_dense) < 0) - HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get min. # of dense attributes") - - /* Check for non-default attribute storage phase change values */ - if(oh->max_compact != H5O_CRT_ATTR_MAX_COMPACT_DEF || oh->min_dense != H5O_CRT_ATTR_MIN_DENSE_DEF) - oh->flags |= H5O_HDR_ATTR_STORE_PHASE_CHANGE; - - /* Determine correct value for chunk #0 size bits */ -/* Avoid compiler warning on 32-bit machines */ -#if H5_SIZEOF_SIZE_T > H5_SIZEOF_INT32_T - if(size_hint > 4294967295UL) - oh->flags |= H5O_HDR_CHUNK0_8; - else -#endif /* H5_SIZEOF_SIZE_T > H5_SIZEOF_INT32_T */ - if(size_hint > 65535) - oh->flags |= H5O_HDR_CHUNK0_4; - else if(size_hint > 255) - oh->flags |= H5O_HDR_CHUNK0_2; - } /* end if */ - else { - /* Reset unused time fields */ - oh->atime = oh->mtime = oh->ctime = oh->btime = 0; - } /* end else */ - - /* Compute total size of initial object header */ - /* (i.e. object header prefix and first chunk) */ - oh_size = (size_t)H5O_SIZEOF_HDR(oh) + size_hint; - - /* Allocate disk space for header and first chunk */ - if(HADDR_UNDEF == (oh_addr = H5MF_alloc(f, H5FD_MEM_OHDR, dxpl_id, (hsize_t)oh_size))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for object header") - - /* Create the chunk list */ - oh->nchunks = oh->alloc_nchunks = 1; - if(NULL == (oh->chunk = H5FL_SEQ_MALLOC(H5O_chunk_t, (size_t)oh->alloc_nchunks))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") - - /* Initialize the first chunk */ - oh->chunk[0].addr = oh_addr; - oh->chunk[0].size = oh_size; - oh->chunk[0].gap = 0; - - /* Allocate enough space for the first chunk */ - /* (including space for serializing the object header prefix */ - if(NULL == (oh->chunk[0].image = H5FL_BLK_CALLOC(chunk_image, oh_size))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") - oh->chunk[0].chunk_proxy = NULL; - - /* Put magic # for object header in first chunk */ - if(oh->version > H5O_VERSION_1) - HDmemcpy(oh->chunk[0].image, H5O_HDR_MAGIC, (size_t)H5_SIZEOF_MAGIC); - - /* Create the message list */ - oh->nmesgs = 1; - oh->alloc_nmesgs = H5O_NMESGS; - if(NULL == (oh->mesg = H5FL_SEQ_CALLOC(H5O_mesg_t, oh->alloc_nmesgs))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") - - /* Initialize the initial "null" message, covering the entire first chunk */ - oh->mesg[0].type = H5O_MSG_NULL; - oh->mesg[0].dirty = TRUE; - oh->mesg[0].native = NULL; - oh->mesg[0].raw = oh->chunk[0].image + (H5O_SIZEOF_HDR(oh) - H5O_SIZEOF_CHKSUM_OH(oh)) + H5O_SIZEOF_MSGHDR_OH(oh); - oh->mesg[0].raw_size = size_hint - (size_t)H5O_SIZEOF_MSGHDR_OH(oh); - oh->mesg[0].chunkno = 0; - - /* Check for non-zero initial refcount on the object header */ - if(initial_rc > 0) { - /* Set the initial refcount & pin the header when its inserted */ - oh->rc = initial_rc; - insert_flags |= H5AC__PIN_ENTRY_FLAG; - } /* end if */ - - /* Set metadata tag in dxpl_id */ - H5_BEGIN_TAG(dxpl_id, oh_addr, FAIL); - - /* Cache object header */ - if(H5AC_insert_entry(f, dxpl_id, H5AC_OHDR, oh_addr, oh, insert_flags) < 0) - HGOTO_ERROR_TAG(H5E_OHDR, H5E_CANTINSERT, FAIL, "unable to cache object header") - - /* Reset object header pointer, now that it's been inserted into the cache */ - oh = NULL; - - /* Reset metadata tag in dxpl_id */ - H5_END_TAG(FAIL); - - /* Set up object location */ - loc->file = f; - loc->addr = oh_addr; - - /* Open it */ - if(H5O_open(loc) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, FAIL, "unable to open object header") - -done: - if(ret_value < 0 && oh) - if(H5O__free(oh) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to destroy object header data") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_create() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_open - * - * Purpose: Opens an object header which is described by the symbol table - * entry OBJ_ENT. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Robb Matzke - * Monday, January 5, 1998 - * - * Modification: - * Raymond Lu - * 5 November 2007 - * Turn off the holding file variable if it's on. When it's - * needed, the caller will turn it on again. - *------------------------------------------------------------------------- - */ -herr_t -H5O_open(H5O_loc_t *loc) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Check args */ - HDassert(loc); - HDassert(loc->file); - -#ifdef H5O_DEBUG - if(H5DEBUG(O)) - HDfprintf(H5DEBUG(O), "> %a\n", loc->addr); -#endif - - /* Turn off the variable for holding file or increment open-lock counters */ - if(loc->holding_file) - loc->holding_file = FALSE; - else - H5F_INCR_NOPEN_OBJS(loc->file); - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_open() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_open_name - * - * Purpose: Opens an object within an HDF5 file. - * - * Return: Success: An open object identifier - * Failure: Negative - * - * Programmer: Quincey Koziol - * March 5 2007 - * - *------------------------------------------------------------------------- - */ -hid_t -H5O_open_name(H5G_loc_t *loc, const char *name, hid_t lapl_id, hid_t dxpl_id, hbool_t app_ref) -{ - H5G_loc_t obj_loc; /* Location used to open group */ - H5G_name_t obj_path; /* Opened object group hier. path */ - H5O_loc_t obj_oloc; /* Opened object object location */ - hbool_t loc_found = FALSE; /* Entry at 'name' found */ - hid_t ret_value = FAIL; - - FUNC_ENTER_NOAPI(FAIL) - - /* Check args */ - HDassert(loc); - HDassert(name && *name); - - /* Set up opened group location to fill in */ - obj_loc.oloc = &obj_oloc; - obj_loc.path = &obj_path; - H5G_loc_reset(&obj_loc); - - /* Find the object's location */ - if(H5G_loc_find(loc, name, &obj_loc/*out*/, lapl_id, dxpl_id) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") - loc_found = TRUE; - - /* Open the object */ - if((ret_value = H5O_open_by_loc(&obj_loc, lapl_id, dxpl_id, app_ref)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, FAIL, "unable to open object") - -done: - if(ret_value < 0 && loc_found) - if(H5G_loc_free(&obj_loc) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "can't free location") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_open_name() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_open_by_loc - * - * Purpose: Opens an object and returns an ID given its group loction. - * - * Return: Success: Open object identifier - * Failure: Negative - * - * Programmer: James Laird - * July 25 2006 - * - *------------------------------------------------------------------------- - */ -hid_t -H5O_open_by_loc(const H5G_loc_t *obj_loc, hid_t lapl_id, hid_t dxpl_id, hbool_t app_ref) -{ - const H5O_obj_class_t *obj_class; /* Class of object for location */ - hid_t ret_value = H5I_INVALID_HID; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - HDassert(obj_loc); - - /* Get the object class for this location */ - if(NULL == (obj_class = H5O_obj_class(obj_loc->oloc, dxpl_id))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to determine object class") - - /* Call the object class's 'open' routine */ - HDassert(obj_class->open); - if((ret_value = obj_class->open(obj_loc, lapl_id, dxpl_id, app_ref)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, FAIL, "unable to open object") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_open_by_loc() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_close - * - * Purpose: Closes an object header that was previously open. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Robb Matzke - * Monday, January 5, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_close(H5O_loc_t *loc, hbool_t *file_closed /*out*/) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Check args */ - HDassert(loc); - HDassert(loc->file); - HDassert(H5F_NOPEN_OBJS(loc->file) > 0); - - /* Set the file_closed flag to the default value. - * This flag lets downstream code know if the file struct is - * still accessible and/or likely to contain useful data. - * It's needed by the evict-on-close code. Clients can ignore - * this value by passing in NULL. - */ - if(file_closed) - *file_closed = FALSE; - - /* Decrement open-lock counters */ - H5F_DECR_NOPEN_OBJS(loc->file); - -#ifdef H5O_DEBUG - if(H5DEBUG(O)) { - if(H5F_FILE_ID(loc->file)< 0 && 1 == H5F_NREFS(loc->file)) - HDfprintf(H5DEBUG(O), "< %a auto %lu remaining\n", - loc->addr, - (unsigned long)H5F_NOPEN_OBJS(loc->file)); - else - HDfprintf(H5DEBUG(O), "< %a\n", loc->addr); - } /* end if */ -#endif - - /* - * If the file open object count has reached the number of open mount points - * (each of which has a group open in the file) attempt to close the file. - */ - if(H5F_NOPEN_OBJS(loc->file) == H5F_NMOUNTS(loc->file)) - /* Attempt to close down the file hierarchy */ - if(H5F_try_close(loc->file, file_closed) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTCLOSEFILE, FAIL, "problem attempting file close") - - /* Release location information */ - if(H5O_loc_free(loc) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "problem attempting to free location") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_close() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_link_oh - * - * Purpose: Adjust the link count for an open object header by adding - * ADJUST to the link count. - * - * Return: Success: New link count - * - * Failure: Negative - * - * Programmer: Robb Matzke - * matzke@llnl.gov - * Aug 5 1997 - * - *------------------------------------------------------------------------- - */ -int -H5O_link_oh(H5F_t *f, int adjust, hid_t dxpl_id, H5O_t *oh, hbool_t *deleted) -{ - haddr_t addr = H5O_OH_GET_ADDR(oh); /* Object header address */ - int ret_value = -1; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(f); - HDassert(oh); - HDassert(deleted); - - /* Check for adjusting link count */ - if(adjust) { - if(adjust < 0) { - /* Check for too large of an adjustment */ - if((unsigned)(-adjust) > oh->nlink) - HGOTO_ERROR(H5E_OHDR, H5E_LINKCOUNT, FAIL, "link count would be negative") - - /* Adjust the link count for the object header */ - oh->nlink = (unsigned)((int)oh->nlink + adjust); - - /* Mark object header as dirty in cache */ - if(H5AC_mark_entry_dirty(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTMARKDIRTY, FAIL, "unable to mark object header as dirty") - - /* Check if the object should be deleted */ - if(oh->nlink == 0) { - /* Check if the object is still open by the user */ - if(H5FO_opened(f, addr) != NULL) { - /* Flag the object to be deleted when it's closed */ - if(H5FO_mark(f, addr, TRUE) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "can't mark object for deletion") - } /* end if */ - else { - /* Mark the object header for deletion */ - *deleted = TRUE; - } /* end else */ - } /* end if */ - } /* end if */ - else { - /* A new object, or one that will be deleted */ - if(0 == oh->nlink) { - /* Check if the object is currently open, but marked for deletion */ - if(H5FO_marked(f, addr)) { - /* Remove "delete me" flag on the object */ - if(H5FO_mark(f, addr, FALSE) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "can't mark object for deletion") - } /* end if */ - } /* end if */ - - /* Adjust the link count for the object header */ - oh->nlink = (unsigned)((int)oh->nlink + adjust); - - /* Mark object header as dirty in cache */ - if(H5AC_mark_entry_dirty(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTMARKDIRTY, FAIL, "unable to mark object header as dirty") - } /* end if */ - - /* Check for operations on refcount message */ - if(oh->version > H5O_VERSION_1) { - /* Check if the object has a refcount message already */ - if(oh->has_refcount_msg) { - /* Check for removing refcount message */ - if(oh->nlink <= 1) { - if(H5O_msg_remove_real(f, oh, H5O_MSG_REFCOUNT, H5O_ALL, NULL, NULL, TRUE, dxpl_id) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "unable to delete refcount message") - oh->has_refcount_msg = FALSE; - } /* end if */ - /* Update refcount message with new link count */ - else { - H5O_refcount_t refcount = oh->nlink; - - if(H5O_msg_write_real(f, dxpl_id, oh, H5O_MSG_REFCOUNT, H5O_MSG_FLAG_DONTSHARE, 0, &refcount) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTUPDATE, FAIL, "unable to update refcount message") - } /* end else */ - } /* end if */ - else { - /* Check for adding refcount message to object */ - if(oh->nlink > 1) { - H5O_refcount_t refcount = oh->nlink; - - if(H5O_msg_append_real(f, dxpl_id, oh, H5O_MSG_REFCOUNT, H5O_MSG_FLAG_DONTSHARE, 0, &refcount) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINSERT, FAIL, "unable to create new refcount message") - oh->has_refcount_msg = TRUE; - } /* end if */ - } /* end else */ - } /* end if */ - } /* end if */ - - /* Set return value */ - ret_value = (int)oh->nlink; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_link_oh() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_link - * - * Purpose: Adjust the link count for an object header by adding - * ADJUST to the link count. - * - * Return: Success: New link count - * - * Failure: Negative - * - * Programmer: Robb Matzke - * matzke@llnl.gov - * Aug 5 1997 - * - *------------------------------------------------------------------------- - */ -int -H5O_link(const H5O_loc_t *loc, int adjust, hid_t dxpl_id) -{ - H5O_t *oh = NULL; - hbool_t deleted = FALSE; /* Whether the object was deleted */ - int ret_value = -1; /* Return value */ - - FUNC_ENTER_NOAPI_TAG(dxpl_id, loc->addr, FAIL) - - /* check args */ - HDassert(loc); - HDassert(loc->file); - HDassert(H5F_addr_defined(loc->addr)); - - /* Pin the object header */ - if(NULL == (oh = H5O_pin(loc, dxpl_id))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPIN, FAIL, "unable to pin object header") - - /* Call the "real" link routine */ - if((ret_value = H5O_link_oh(loc->file, adjust, dxpl_id, oh, &deleted)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_LINKCOUNT, FAIL, "unable to adjust object link count") - -done: - if(oh && H5O_unpin(oh) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPIN, FAIL, "unable to unpin object header") - if(ret_value >= 0 && deleted && H5O_delete(loc->file, dxpl_id, loc->addr) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "can't delete object from file") - - FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL) -} /* end H5O_link() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_protect - * - * Purpose: Wrapper around H5AC_protect for use during a H5O_protect-> - * H5O_msg_append->...->H5O_msg_append->H5O_unprotect sequence of calls - * during an object's creation. - * - * Return: Success: Pointer to the object header structure for the - * object. - * Failure: NULL - * - * Programmer: Quincey Koziol - * koziol@ncsa.uiuc.edu - * Dec 31 2002 - * - *------------------------------------------------------------------------- - */ -H5O_t * -H5O_protect(const H5O_loc_t *loc, hid_t dxpl_id, unsigned prot_flags, - hbool_t pin_all_chunks) -{ - H5O_t *oh = NULL; /* Object header protected */ - H5O_cache_ud_t udata; /* User data for protecting object header */ - H5O_cont_msgs_t cont_msg_info; /* Continuation message info */ - unsigned file_intent; /* R/W intent on file */ - H5O_t *ret_value = NULL; /* Return value */ - - FUNC_ENTER_NOAPI_TAG(dxpl_id, loc->addr, NULL) - - /* check args */ - HDassert(loc); - HDassert(loc->file); - - /* prot_flags may only contain the H5AC__READ_ONLY_FLAG */ - HDassert((prot_flags & (unsigned)(~H5AC__READ_ONLY_FLAG)) == 0); - - /* Check for valid address */ - if(!H5F_addr_defined(loc->addr)) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, NULL, "address undefined") - - /* Check for write access on the file */ - file_intent = H5F_INTENT(loc->file); - if((0 == (prot_flags & H5AC__READ_ONLY_FLAG)) && (0 == (file_intent & H5F_ACC_RDWR))) - HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, NULL, "no write intent on file") - - /* Construct the user data for protect callback */ - udata.made_attempt = FALSE; - udata.v1_pfx_nmesgs = 0; - udata.chunk0_size = 0; - udata.oh = NULL; - udata.common.f = loc->file; - udata.common.dxpl_id = dxpl_id; - udata.common.file_intent = file_intent; - udata.common.merged_null_msgs = 0; - HDmemset(&cont_msg_info, 0, sizeof(cont_msg_info)); - udata.common.cont_msg_info = &cont_msg_info; - udata.common.addr = loc->addr; - - /* Lock the object header into the cache */ - if(NULL == (oh = (H5O_t *)H5AC_protect(loc->file, dxpl_id, H5AC_OHDR, loc->addr, &udata, prot_flags))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, NULL, "unable to load object header") - - /* Check if there are any continuation messages to process */ - if(cont_msg_info.nmsgs > 0) { - size_t curr_msg; /* Current continuation message to process */ - H5O_chk_cache_ud_t chk_udata; /* User data for loading chunk */ - - /* Sanity check - we should only have continuation messages to process - * when the object header is actually loaded from the file. - */ - HDassert(udata.made_attempt == TRUE); - HDassert(cont_msg_info.msgs); - - /* Construct the user data for protecting chunks */ - chk_udata.decoding = TRUE; - chk_udata.oh = oh; - chk_udata.chunkno = UINT_MAX; /* Set to invalid value, for better error detection */ - chk_udata.common.f = loc->file; - chk_udata.common.dxpl_id = dxpl_id; - chk_udata.common.file_intent = file_intent; - chk_udata.common.merged_null_msgs = udata.common.merged_null_msgs; - chk_udata.common.cont_msg_info = &cont_msg_info; - - /* Read in continuation messages, until there are no more */ - /* (Note that loading chunks could increase the # of continuation - * messages if new ones are found - QAK, 19/11/2016) - */ - curr_msg = 0; - while(curr_msg < cont_msg_info.nmsgs) { - H5O_chunk_proxy_t *chk_proxy; /* Proxy for chunk, to bring it into memory */ -#ifndef NDEBUG - size_t chkcnt = oh->nchunks; /* Count of chunks (for sanity checking) */ -#endif /* NDEBUG */ - - /* Bring the chunk into the cache */ - /* (which adds to the object header) */ - chk_udata.common.addr = cont_msg_info.msgs[curr_msg].addr; - chk_udata.size = cont_msg_info.msgs[curr_msg].size; - if(NULL == (chk_proxy = (H5O_chunk_proxy_t *)H5AC_protect(loc->file, dxpl_id, H5AC_OHDR_CHK, cont_msg_info.msgs[curr_msg].addr, &chk_udata, prot_flags))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, NULL, "unable to load object header chunk") - - /* Sanity check */ - HDassert(chk_proxy->oh == oh); - HDassert(chk_proxy->chunkno == chkcnt); - HDassert(oh->nchunks == (chkcnt + 1)); - - /* Release the chunk from the cache */ - if(H5AC_unprotect(loc->file, dxpl_id, H5AC_OHDR_CHK, cont_msg_info.msgs[curr_msg].addr, chk_proxy, H5AC__NO_FLAGS_SET) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, NULL, "unable to release object header chunk") - - /* Advance to next continuation message */ - curr_msg++; - } /* end while */ - - /* Release any continuation messages built up */ - cont_msg_info.msgs = (H5O_cont_t *)H5FL_SEQ_FREE(H5O_cont_t, cont_msg_info.msgs); - - /* Pass back out some of the chunk's user data */ - udata.common.merged_null_msgs = chk_udata.common.merged_null_msgs; - } /* end if */ - - /* Check for incorrect # of object header messages, if we've just loaded - * this object header from the file - */ - if(udata.made_attempt) { -/* Don't enforce the error on an incorrect # of object header messages bug - * unless strict format checking is enabled. This allows for older - * files, created with a version of the library that had a bug in tracking - * the correct # of header messages to be read in without the library - * erroring out here. -QAK - */ -#ifdef H5_STRICT_FORMAT_CHECKS - /* Check for incorrect # of messages in v1 object header */ - if(oh->version == H5O_VERSION_1 && - (oh->nmesgs + udata.common.merged_null_msgs) != udata.v1_pfx_nmesgs) - HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "corrupt object header - incorrect # of messages") -#endif /* H5_STRICT_FORMAT_CHECKS */ - } /* end if */ - -#ifdef H5O_DEBUG -H5O_assert(oh); -#endif /* H5O_DEBUG */ - - /* Pin the other chunks also when requested, so that the object header - * proxy can be set up. - */ - if(pin_all_chunks && oh->nchunks > 1) { - unsigned u; /* Local index variable */ - - /* Sanity check */ - HDassert(oh->swmr_write); - - /* Iterate over chunks > 0 */ - for(u = 1; u < oh->nchunks; u++) { - H5O_chunk_proxy_t *chk_proxy; /* Chunk proxy */ - - /* Protect chunk */ - if(NULL == (chk_proxy = H5O_chunk_protect(loc->file, dxpl_id, oh, u))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, NULL, "unable to protect object header chunk") - - /* Pin chunk proxy*/ - if(H5AC_pin_protected_entry(chk_proxy) < 0 ) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPIN, NULL, "unable to pin object header chunk") - - /* Unprotect chunk */ - if(H5O_chunk_unprotect(loc->file, dxpl_id, chk_proxy, FALSE) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, NULL, "unable to unprotect object header chunk") - - /* Preserve chunk proxy pointer for later */ - oh->chunk[u].chunk_proxy = chk_proxy; - } /* end for */ - - /* Set the flag for the unprotect */ - oh->chunks_pinned = TRUE; - } /* end if */ - - /* Set return value */ - ret_value = oh; - -done: - if(ret_value == NULL && oh) - if(H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, NULL, "unable to release object header") - - FUNC_LEAVE_NOAPI_TAG(ret_value, NULL) -} /* end H5O_protect() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_pin - * - * Purpose: Pin an object header down for use during a sequence of message - * operations, which prevents the object header from being - * evicted from the cache. - * - * Return: Success: Pointer to the object header structure for the - * object. - * Failure: NULL - * - * Programmer: Quincey Koziol - * koziol@hdfgroup.org - * Jul 13 2008 - * - *------------------------------------------------------------------------- - */ -H5O_t * -H5O_pin(const H5O_loc_t *loc, hid_t dxpl_id) -{ - H5O_t *oh = NULL; /* Object header */ - H5O_t *ret_value = NULL; /* Return value */ - - FUNC_ENTER_NOAPI(NULL) - - /* check args */ - HDassert(loc); - - /* Get header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__NO_FLAGS_SET, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, NULL, "unable to protect object header") - - /* Increment the reference count on the object header */ - /* (which will pin it, if appropriate) */ - if(H5O_inc_rc(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINC, NULL, "unable to increment reference count on object header") - - /* Set the return value */ - ret_value = oh; - -done: - /* Release the object header from the cache */ - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, NULL, "unable to release object header") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_pin() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_unpin - * - * Purpose: Unpin an object header, allowing it to be evicted from the - * metadata cache. - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * koziol@hdfgroup.org - * Jul 13 2008 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_unpin(H5O_t *oh) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(oh); - - /* Decrement the reference count on the object header */ - /* (which will unpin it, if appropriate) */ - if(H5O_dec_rc(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTDEC, FAIL, "unable to decrement reference count on object header") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_unpin() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_unprotect - * - * Purpose: Wrapper around H5AC_unprotect for use during a H5O_protect-> - * H5O_msg_append->...->H5O_msg_append->H5O_unprotect sequence of calls - * during an object's creation. - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * koziol@ncsa.uiuc.edu - * Dec 31 2002 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_unprotect(const H5O_loc_t *loc, hid_t dxpl_id, H5O_t *oh, unsigned oh_flags) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(loc); - HDassert(oh); - - /* Unpin the other chunks */ - if(oh->chunks_pinned && oh->nchunks > 1) { - unsigned u; /* Local index variable */ - - /* Sanity check */ - HDassert(oh->swmr_write); - - /* Iterate over chunks > 0 */ - for(u = 1; u < oh->nchunks; u++) { - if(NULL != oh->chunk[u].chunk_proxy) { - /* Release chunk proxy */ - if(H5AC_unpin_entry(oh->chunk[u].chunk_proxy) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPIN, FAIL, "unable to unpin object header chunk") - oh->chunk[u].chunk_proxy = NULL; - } /* end if */ - } /* end for */ - - /* Reet the flag from the unprotect */ - oh->chunks_pinned = FALSE; - } /* end if */ - - /* Unprotect the object header */ - if(H5AC_unprotect(loc->file, dxpl_id, H5AC_OHDR, oh->chunk[0].addr, oh, oh_flags) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_unprotect() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_touch_oh - * - * Purpose: If FORCE is non-zero then create a modification time message - * unless one already exists. Then update any existing - * modification time message with the current time. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Robb Matzke - * Monday, July 27, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_touch_oh(H5F_t *f, hid_t dxpl_id, H5O_t *oh, hbool_t force) -{ - H5O_chunk_proxy_t *chk_proxy = NULL; /* Chunk that message is in */ - hbool_t chk_dirtied = FALSE; /* Flag for unprotecting chunk */ - time_t now; /* Current time */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT - - HDassert(f); - HDassert(oh); - - /* Check if this object header is tracking times */ - if(oh->flags & H5O_HDR_STORE_TIMES) { - /* Get current time */ - now = H5_now(); - - /* Check version, to determine how to store time information */ - if(oh->version == H5O_VERSION_1) { - size_t idx; /* Index of modification time message to update */ - - /* Look for existing message */ - for(idx = 0; idx < oh->nmesgs; idx++) - if(H5O_MSG_MTIME == oh->mesg[idx].type || H5O_MSG_MTIME_NEW == oh->mesg[idx].type) - break; - - /* Create a new message, if necessary */ - if(idx == oh->nmesgs) { - unsigned mesg_flags = 0; /* Flags for message in object header */ - - /* If we would have to create a new message, but we aren't 'forcing' it, get out now */ - if(!force) - HGOTO_DONE(SUCCEED); /*nothing to do*/ - - /* Allocate space for the modification time message */ - if(H5O_msg_alloc(f, dxpl_id, oh, H5O_MSG_MTIME_NEW, &mesg_flags, &now, &idx) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to allocate space for modification time message") - - /* Set the message's flags if appropriate */ - oh->mesg[idx].flags = (uint8_t)mesg_flags; - } /* end if */ - - /* Protect chunk */ - if(NULL == (chk_proxy = H5O_chunk_protect(f, dxpl_id, oh, oh->mesg[idx].chunkno))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header chunk") - - /* Allocate 'native' space, if necessary */ - if(NULL == oh->mesg[idx].native) { - if(NULL == (oh->mesg[idx].native = H5FL_MALLOC(time_t))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "memory allocation failed for modification time message") - } /* end if */ - - /* Update the message */ - *((time_t *)(oh->mesg[idx].native)) = now; - - /* Mark the message as dirty */ - oh->mesg[idx].dirty = TRUE; - chk_dirtied = TRUE; - } /* end if */ - else { - /* XXX: For now, update access time & change fields in the object header */ - /* (will need to add some code to update modification time appropriately) */ - oh->atime = oh->ctime = now; - - /* Mark object header as dirty in cache */ - if(H5AC_mark_entry_dirty(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTMARKDIRTY, FAIL, "unable to mark object header as dirty") - } /* end else */ - } /* end if */ - -done: - /* Release chunk */ - if(chk_proxy && H5O_chunk_unprotect(f, dxpl_id, chk_proxy, chk_dirtied) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to unprotect object header chunk") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_touch_oh() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_touch - * - * Purpose: Touch an object by setting the modification time to the - * current time and marking the object as dirty. Unless FORCE - * is non-zero, nothing happens if there is no MTIME message in - * the object header. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Robb Matzke - * Monday, July 27, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_touch(const H5O_loc_t *loc, hbool_t force, hid_t dxpl_id) -{ - H5O_t *oh = NULL; /* Object header to modify */ - unsigned oh_flags = H5AC__NO_FLAGS_SET; /* Flags for unprotecting object header */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(loc); - - /* Get the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__NO_FLAGS_SET, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header") - - /* Create/Update the modification time message */ - if(H5O_touch_oh(loc->file, dxpl_id, oh, force) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "unable to update object modificaton time") - - /* Mark object header as changed */ - oh_flags |= H5AC__DIRTIED_FLAG; - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, oh_flags) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_touch() */ - -#ifdef H5O_ENABLE_BOGUS - -/*------------------------------------------------------------------------- - * Function: H5O_bogus_oh - * - * Purpose: Create a "bogus" message unless one already exists. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * <koziol@ncsa.uiuc.edu> - * Tuesday, January 21, 2003 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_bogus_oh(H5F_t *f, hid_t dxpl_id, H5O_t *oh, unsigned bogus_id, unsigned mesg_flags) -{ - size_t idx; /* Local index variable */ - H5O_msg_class_t *type; /* Message class type */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - HDassert(f); - HDassert(oh); - - /* Look for existing message */ - for(idx = 0; idx < oh->nmesgs; idx++) - if(H5O_MSG_BOGUS_VALID == oh->mesg[idx].type || - H5O_MSG_BOGUS_INVALID == oh->mesg[idx].type) - break; - - /* Create a new message */ - if(idx == oh->nmesgs) { - H5O_bogus_t *bogus; /* Pointer to the bogus information */ - - /* Allocate the native message in memory */ - if(NULL == (bogus = H5MM_malloc(sizeof(H5O_bogus_t)))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "memory allocation failed for 'bogus' message") - - /* Update the native value */ - bogus->u = H5O_BOGUS_VALUE; - - if(bogus_id == H5O_BOGUS_VALID_ID) - type = H5O_MSG_BOGUS_VALID; - else if(bogus_id == H5O_BOGUS_INVALID_ID) - type = H5O_MSG_BOGUS_INVALID; - else - HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "invalid ID for 'bogus' message") - - /* Allocate space in the object header for bogus message */ - if(H5O_msg_alloc(f, dxpl_id, oh, type, &mesg_flags, bogus, &idx) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to allocate space for 'bogus' message") - - /* Point to "bogus" information (take it over) */ - oh->mesg[idx].native = bogus; - - /* Set the appropriate flags for the message */ - oh->mesg[idx].flags = mesg_flags; - - /* Mark the message and object header as dirty */ - oh->mesg[idx].dirty = TRUE; - oh->cache_info.is_dirty = TRUE; - } /* end if */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_bogus_oh() */ -#endif /* H5O_ENABLE_BOGUS */ - - -/*------------------------------------------------------------------------- - * Function: H5O_delete - * - * Purpose: Delete an object header from a file. This frees the file - * space used for the object header (and it's continuation blocks) - * and also walks through each header message and asks it to - * remove all the pieces of the file referenced by the header. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * koziol@ncsa.uiuc.edu - * Mar 19 2003 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_delete(H5F_t *f, hid_t dxpl_id, haddr_t addr) -{ - H5O_t *oh = NULL; /* Object header information */ - H5O_loc_t loc; /* Object location for object to delete */ - unsigned oh_flags = H5AC__NO_FLAGS_SET; /* Flags for unprotecting object header */ - hbool_t corked; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI_TAG(dxpl_id, addr, FAIL) - - /* Check args */ - HDassert(f); - HDassert(H5F_addr_defined(addr)); - - /* Set up the object location */ - loc.file = f; - loc.addr = addr; - loc.holding_file = FALSE; - - /* Get the object header information */ - if(NULL == (oh = H5O_protect(&loc, dxpl_id, H5AC__NO_FLAGS_SET, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header") - - /* Delete object */ - if(H5O_delete_oh(f, dxpl_id, oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "can't delete object from file") - - /* Uncork cache entries with tag: addr */ - if(H5AC_cork(f, addr, H5AC__GET_CORKED, &corked) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to retrieve an object's cork status") - if(corked) - if(H5AC_cork(f, addr, H5AC__UNCORK, NULL) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTUNCORK, FAIL, "unable to uncork an object") - - /* Mark object header as deleted */ - oh_flags = H5AC__DIRTIED_FLAG | H5AC__DELETED_FLAG | H5AC__FREE_FILE_SPACE_FLAG; - -done: - if(oh && H5O_unprotect(&loc, dxpl_id, oh, oh_flags) < 0) - HDONE_ERROR(H5E_OHDR, H5E_PROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL) -} /* end H5O_delete() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_delete_oh - * - * Purpose: Internal function to: - * Delete an object header from a file. This frees the file - * space used for the object header (and it's continuation blocks) - * and also walks through each header message and asks it to - * remove all the pieces of the file referenced by the header. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * koziol@ncsa.uiuc.edu - * Mar 19 2003 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5O_delete_oh(H5F_t *f, hid_t dxpl_id, H5O_t *oh) -{ - H5O_mesg_t *curr_msg; /* Pointer to current message being operated on */ - unsigned u; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT - - /* Check args */ - HDassert(f); - HDassert(oh); - - /* Walk through the list of object header messages, asking each one to - * delete any file space used - */ - for(u = 0, curr_msg = &oh->mesg[0]; u < oh->nmesgs; u++, curr_msg++) { - /* Free any space referred to in the file from this message */ - if(H5O_delete_mesg(f, dxpl_id, oh, curr_msg) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTDELETE, FAIL, "unable to delete file space for object header message") - } /* end for */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_delete_oh() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_obj_type - * - * Purpose: Retrieves the type of object pointed to by `loc'. - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Robb Matzke - * Wednesday, November 4, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_obj_type(const H5O_loc_t *loc, H5O_type_t *obj_type, hid_t dxpl_id) -{ - H5O_t *oh = NULL; /* Object header for location */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI_TAG(dxpl_id, loc->addr, FAIL) - - /* Load the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header") - - /* Retrieve the type of the object */ - if(H5O_obj_type_real(oh, obj_type) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to determine object type") - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL) -} /* end H5O_obj_type() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_obj_type_real - * - * Purpose: Returns the type of object pointed to by `oh'. - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * Monday, November 21, 2005 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5O_obj_type_real(H5O_t *oh, H5O_type_t *obj_type) -{ - const H5O_obj_class_t *obj_class; /* Class of object for header */ - - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Sanity check */ - HDassert(oh); - HDassert(obj_type); - - /* Look up class for object header */ - if(NULL == (obj_class = H5O_obj_class_real(oh))) { - /* Clear error stack from "failed" class lookup */ - H5E_clear_stack(NULL); - - /* Set type to "unknown" */ - *obj_type = H5O_TYPE_UNKNOWN; - } /* end if */ - else { - /* Set object type */ - *obj_type = obj_class->type; - } /* end else */ - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5O_obj_type_real() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_obj_class - * - * Purpose: Returns the class of object pointed to by `loc'. - * - * Return: Success: An object class - * Failure: NULL - * - * Programmer: Quincey Koziol - * Monday, November 6, 2006 - * - *------------------------------------------------------------------------- - */ -const H5O_obj_class_t * -H5O_obj_class(const H5O_loc_t *loc, hid_t dxpl_id) -{ - H5O_t *oh = NULL; /* Object header for location */ - const H5O_obj_class_t *ret_value = NULL; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT_TAG(dxpl_id, loc->addr, NULL) - - /* Load the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, NULL, "unable to load object header") - - /* Test whether entry qualifies as a particular type of object */ - if(NULL == (ret_value = H5O_obj_class_real(oh))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, NULL, "unable to determine object type") - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, NULL, "unable to release object header") - - FUNC_LEAVE_NOAPI_TAG(ret_value, NULL) -} /* end H5O_obj_class() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_obj_class_real - * - * Purpose: Returns the class of object pointed to by `oh'. - * - * Return: Success: An object class - * Failure: NULL - * - * Programmer: Quincey Koziol - * Monday, November 21, 2005 - * - *------------------------------------------------------------------------- - */ -static const H5O_obj_class_t * -H5O_obj_class_real(H5O_t *oh) -{ - size_t i; /* Local index variable */ - const H5O_obj_class_t *ret_value = NULL; /* Return value */ - - FUNC_ENTER_NOAPI(NULL) - - /* Sanity check */ - HDassert(oh); - - /* Test whether entry qualifies as a particular type of object */ - /* (Note: loop is in reverse order, to test specific objects first) */ - for(i = NELMTS(H5O_obj_class_g); i > 0; --i) { - htri_t isa; /* Is entry a particular type? */ - - if((isa = (H5O_obj_class_g[i - 1]->isa)(oh)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "unable to determine object type") - else if(isa) - HGOTO_DONE(H5O_obj_class_g[i - 1]) - } /* end for */ - - if(0 == i) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, NULL, "unable to determine object type") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_obj_class_real() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_loc - * - * Purpose: Gets the object location for an object given its ID. - * - * Return: Success: Pointer to H5O_loc_t - * Failure: NULL - * - * Programmer: James Laird - * July 25 2006 - * - *------------------------------------------------------------------------- - */ -H5O_loc_t * -H5O_get_loc(hid_t object_id) -{ - H5O_loc_t *ret_value = NULL; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT - - switch(H5I_get_type(object_id)) { - case H5I_GROUP: - if(NULL == (ret_value = H5O_OBJ_GROUP->get_oloc(object_id))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, NULL, "unable to get object location from group ID") - break; - - case H5I_DATASET: - if(NULL == (ret_value = H5O_OBJ_DATASET->get_oloc(object_id))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, NULL, "unable to get object location from dataset ID") - break; - - case H5I_DATATYPE: - if(NULL == (ret_value = H5O_OBJ_DATATYPE->get_oloc(object_id))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, NULL, "unable to get object location from datatype ID") - break; - - case H5I_UNINIT: - case H5I_BADID: - case H5I_FILE: - case H5I_DATASPACE: - case H5I_ATTR: - case H5I_REFERENCE: - case H5I_VFL: - case H5I_GENPROP_CLS: - case H5I_GENPROP_LST: - case H5I_ERROR_CLASS: - case H5I_ERROR_MSG: - case H5I_ERROR_STACK: - case H5I_NTYPES: - default: - HGOTO_ERROR(H5E_OHDR, H5E_BADTYPE, NULL, "invalid object type") - } /* end switch */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_get_loc() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_loc_reset - * - * Purpose: Reset a object location to an empty state - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * Monday, September 19, 2005 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_loc_reset(H5O_loc_t *loc) -{ - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Check arguments */ - HDassert(loc); - - /* Clear the object location to an empty state */ - HDmemset(loc, 0, sizeof(H5O_loc_t)); - loc->addr = HADDR_UNDEF; - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5O_loc_reset() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_loc_copy - * - * Purpose: Copy object location information - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * koziol@ncsa.uiuc.edu - * Monday, September 19, 2005 - * - * Notes: 'depth' parameter determines how much of the group entry - * structure we want to copy. The values are: - * H5_COPY_SHALLOW - Copy all the field values from the source - * to the destination, but not copying objects pointed to. - * (Destination "takes ownership" of objects pointed to) - * H5_COPY_DEEP - Copy all the fields from the source to - * the destination, deep copying objects pointed to. - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_loc_copy(H5O_loc_t *dst, H5O_loc_t *src, H5_copy_depth_t depth) -{ - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Check arguments */ - HDassert(src); - HDassert(dst); - HDassert(depth == H5_COPY_SHALLOW || depth == H5_COPY_DEEP); - - /* Copy the top level information */ - HDmemcpy(dst, src, sizeof(H5O_loc_t)); - - /* Deep copy the names */ - if(depth == H5_COPY_DEEP) { - /* If the original entry was holding open the file, this one should - * hold it open, too. - */ - if(src->holding_file) - H5F_INCR_NOPEN_OBJS(dst->file); - } else if(depth == H5_COPY_SHALLOW) { - H5O_loc_reset(src); - } /* end if */ - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5O_loc_copy() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_loc_hold_file - * - * Purpose: Have this object header hold a file open until it is - * released. - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: James Laird - * Wednesday, August 16, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_loc_hold_file(H5O_loc_t *loc) -{ - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Check arguments */ - HDassert(loc); - HDassert(loc->file); - - /* If this location is not already holding its file open, do so. */ - if(!loc->holding_file) { - H5F_INCR_NOPEN_OBJS(loc->file); - loc->holding_file = TRUE; - } /* end if */ - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5O_loc_hold_file() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_loc_free - * - * Purpose: Release resources used by this object header location. - * Not to be confused with H5O_close; this is used on - * locations that don't correspond to open objects. - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: James Laird - * Wednesday, August 16, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_loc_free(H5O_loc_t *loc) -{ - herr_t ret_value = SUCCEED; - - FUNC_ENTER_NOAPI_NOINIT - - /* Check arguments */ - HDassert(loc); - - /* If this location is holding its file open try to close the file. */ - if(loc->holding_file) { - H5F_DECR_NOPEN_OBJS(loc->file); - loc->holding_file = FALSE; - if(H5F_NOPEN_OBJS(loc->file) <= 0) { - if(H5F_try_close(loc->file, NULL) < 0) - HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEFILE, FAIL, "can't close file") - } /* end if */ - } /* end if */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_loc_free() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_hdr_info - * - * Purpose: Retrieve the object header information for an object - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * September 22 2009 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_get_hdr_info(const H5O_loc_t *loc, hid_t dxpl_id, H5O_hdr_info_t *hdr) -{ - H5O_t *oh = NULL; /* Object header */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Check args */ - HDassert(loc); - HDassert(hdr); - - /* Reset the object header info structure */ - HDmemset(hdr, 0, sizeof(*hdr)); - - /* Get the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, FAIL, "unable to load object header") - - /* Get the information for the object header */ - if(H5O_get_hdr_info_real(oh, hdr) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't retrieve object header info") - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_PROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_get_hdr_info() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_hdr_info_real - * - * Purpose: Internal routine to retrieve the object header information for an object - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * September 22 2009 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5O_get_hdr_info_real(const H5O_t *oh, H5O_hdr_info_t *hdr) -{ - const H5O_mesg_t *curr_msg; /* Pointer to current message being operated on */ - const H5O_chunk_t *curr_chunk; /* Pointer to current message being operated on */ - unsigned u; /* Local index variable */ - - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Check args */ - HDassert(oh); - HDassert(hdr); - - /* Set the version for the object header */ - hdr->version = oh->version; - - /* Set the number of messages & chunks */ - H5_CHECKED_ASSIGN(hdr->nmesgs, unsigned, oh->nmesgs, size_t); - H5_CHECKED_ASSIGN(hdr->nchunks, unsigned, oh->nchunks, size_t); - - /* Set the status flags */ - hdr->flags = oh->flags; - - /* Iterate over all the messages, accumulating message size & type information */ - hdr->space.meta = (hsize_t)H5O_SIZEOF_HDR(oh) + (hsize_t)(H5O_SIZEOF_CHKHDR_OH(oh) * (oh->nchunks - 1)); - hdr->space.mesg = 0; - hdr->space.free = 0; - hdr->mesg.present = 0; - hdr->mesg.shared = 0; - for(u = 0, curr_msg = &oh->mesg[0]; u < oh->nmesgs; u++, curr_msg++) { - uint64_t type_flag; /* Flag for message type */ - - /* Accumulate space usage information, based on the type of message */ - if(H5O_NULL_ID == curr_msg->type->id) - hdr->space.free += (hsize_t)((size_t)H5O_SIZEOF_MSGHDR_OH(oh) + curr_msg->raw_size); - else if(H5O_CONT_ID == curr_msg->type->id) - hdr->space.meta += (hsize_t)((size_t)H5O_SIZEOF_MSGHDR_OH(oh) + curr_msg->raw_size); - else { - hdr->space.meta += (hsize_t)H5O_SIZEOF_MSGHDR_OH(oh); - hdr->space.mesg += curr_msg->raw_size; - } /* end else */ - - /* Set flag to indicate presence of message type */ - type_flag = ((uint64_t)1) << curr_msg->type->id; - hdr->mesg.present |= type_flag; - - /* Set flag if the message is shared in some way */ - if(curr_msg->flags & H5O_MSG_FLAG_SHARED) \ - hdr->mesg.shared |= type_flag; - } /* end for */ - - /* Iterate over all the chunks, adding any gaps to the free space */ - hdr->space.total = 0; - for(u = 0, curr_chunk = &oh->chunk[0]; u < oh->nchunks; u++, curr_chunk++) { - /* Accumulate the size of the header on disk */ - hdr->space.total += curr_chunk->size; - - /* If the chunk has a gap, add it to the free space */ - hdr->space.free += curr_chunk->gap; - } /* end for */ - - /* Sanity check that all the bytes are accounted for */ - HDassert(hdr->space.total == (hdr->space.free + hdr->space.meta + hdr->space.mesg)); - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5O_get_hdr_info_real() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_info - * - * Purpose: Retrieve the information for an object - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * November 21 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_get_info(const H5O_loc_t *loc, hid_t dxpl_id, hbool_t want_ih_info, - H5O_info_t *oinfo) -{ - const H5O_obj_class_t *obj_class; /* Class of object for header */ - H5O_t *oh = NULL; /* Object header */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI_TAG(dxpl_id, loc->addr, FAIL) - - /* Check args */ - HDassert(loc); - HDassert(oinfo); - - /* Get the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header") - - /* Reset the object info structure */ - HDmemset(oinfo, 0, sizeof(*oinfo)); - - /* Retrieve the file's fileno */ - H5F_GET_FILENO(loc->file, oinfo->fileno); - - /* Set the object's address */ - oinfo->addr = loc->addr; - - /* Get class for object */ - if(NULL == (obj_class = H5O_obj_class_real(oh))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to determine object class") - - /* Retrieve the type of the object */ - oinfo->type = obj_class->type; - - /* Set the object's reference count */ - oinfo->rc = oh->nlink; - - /* Get modification time for object */ - if(oh->version > H5O_VERSION_1) { - oinfo->atime = oh->atime; - oinfo->mtime = oh->mtime; - oinfo->ctime = oh->ctime; - oinfo->btime = oh->btime; - } /* end if */ - else { - htri_t exists; /* Flag if header message of interest exists */ - - /* No information for access & modification fields */ - /* (we stopped updating the "modification time" header message for - * raw data changes, so the "modification time" header message - * is closest to the 'change time', in POSIX terms - QAK) - */ - oinfo->atime = 0; - oinfo->mtime = 0; - oinfo->btime = 0; - - /* Might be information for modification time */ - if((exists = H5O_msg_exists_oh(oh, H5O_MTIME_ID)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "unable to check for MTIME message") - if(exists > 0) { - /* Get "old style" modification time info */ - if(NULL == H5O_msg_read_oh(loc->file, dxpl_id, oh, H5O_MTIME_ID, &oinfo->ctime)) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't read MTIME message") - } /* end if */ - else { - /* Check for "new style" modification time info */ - if((exists = H5O_msg_exists_oh(oh, H5O_MTIME_NEW_ID)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "unable to check for MTIME_NEW message") - if(exists > 0) { - /* Get "new style" modification time info */ - if(NULL == H5O_msg_read_oh(loc->file, dxpl_id, oh, H5O_MTIME_NEW_ID, &oinfo->ctime)) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't read MTIME_NEW message") - } /* end if */ - else - oinfo->ctime = 0; - } /* end else */ - } /* end else */ - - /* Get the information for the object header */ - if(H5O_get_hdr_info_real(oh, &oinfo->hdr) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't retrieve object header info") - - /* Retrieve # of attributes */ - if(H5O_attr_count_real(loc->file, dxpl_id, oh, &oinfo->num_attrs) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't retrieve attribute count") - - /* Get B-tree & heap metadata storage size, if requested */ - if(want_ih_info) { - /* Check for 'bh_info' callback for this type of object */ - if(obj_class->bh_info) { - /* Call the object's class 'bh_info' routine */ - if((obj_class->bh_info)(loc, dxpl_id, oh, &oinfo->meta_size.obj) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't retrieve object's btree & heap info") - } /* end if */ - - /* Get B-tree & heap info for any attributes */ - if(oinfo->num_attrs > 0) { - if(H5O_attr_bh_info(loc->file, dxpl_id, oh, &oinfo->meta_size.attr) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't retrieve attribute btree & heap info") - } /* end if */ - } /* end if */ - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL) -} /* end H5O_get_info() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_create_plist - * - * Purpose: Retrieve the object creation properties for an object - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * November 28 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_get_create_plist(const H5O_loc_t *loc, hid_t dxpl_id, H5P_genplist_t *oc_plist) -{ - H5O_t *oh = NULL; /* Object header */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Check args */ - HDassert(loc); - HDassert(oc_plist); - - /* Get the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header") - - /* Set property values, if they were used for the object */ - if(oh->version > H5O_VERSION_1) { - uint8_t ohdr_flags; /* "User-visible" object header status flags */ - - /* Set attribute storage values */ - if(H5P_set(oc_plist, H5O_CRT_ATTR_MAX_COMPACT_NAME, &oh->max_compact) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set max. # of compact attributes in property list") - if(H5P_set(oc_plist, H5O_CRT_ATTR_MIN_DENSE_NAME, &oh->min_dense) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, FAIL, "can't set min. # of dense attributes in property list") - - /* Mask off non-"user visible" flags */ - ohdr_flags = oh->flags & (H5O_HDR_ATTR_CRT_ORDER_TRACKED | H5O_HDR_ATTR_CRT_ORDER_INDEXED | H5O_HDR_STORE_TIMES); - - /* Set object header flags */ - if(H5P_set(oc_plist, H5O_CRT_OHDR_FLAGS_NAME, &ohdr_flags) < 0) - HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set object header flags") - } /* end if */ - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_get_create_plist() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_nlinks - * - * Purpose: Retrieve the number of link messages read in from the file - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * March 11 2007 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_get_nlinks(const H5O_loc_t *loc, hid_t dxpl_id, hsize_t *nlinks) -{ - H5O_t *oh = NULL; /* Object header */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Check args */ - HDassert(loc); - HDassert(nlinks); - - /* Get the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header") - - /* Retrieve the # of link messages seen when the object header was loaded */ - *nlinks = oh->link_msgs_seen; - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_get_nlinks() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_obj_create - * - * Purpose: Creates an object, in an abstract manner. - * - * Return: Success: Pointer to object opened - * Failure: NULL - * - * Programmer: Quincey Koziol - * April 9 2007 - * - *------------------------------------------------------------------------- - */ -void * -H5O_obj_create(H5F_t *f, H5O_type_t obj_type, void *crt_info, H5G_loc_t *obj_loc, - hid_t dxpl_id) -{ - size_t u; /* Local index variable */ - void *ret_value = NULL; /* Return value */ - - FUNC_ENTER_NOAPI(NULL) - - /* Sanity checks */ - HDassert(f); - HDassert(obj_type >= H5O_TYPE_GROUP && obj_type <= H5O_TYPE_NAMED_DATATYPE); - HDassert(crt_info); - HDassert(obj_loc); - - /* Iterate through the object classes */ - for(u = 0; u < NELMTS(H5O_obj_class_g); u++) { - /* Check for correct type of object to create */ - if(H5O_obj_class_g[u]->type == obj_type) { - /* Call the object class's 'create' routine */ - HDassert(H5O_obj_class_g[u]->create); - if(NULL == (ret_value = H5O_obj_class_g[u]->create(f, crt_info, obj_loc, dxpl_id))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, NULL, "unable to open object") - - /* Break out of loop */ - break; - } /* end if */ - } /* end for */ - HDassert(ret_value); - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_obj_create() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_oh_addr - * - * Purpose: Retrieve the address of the object header - * - * Note: This routine participates in the "Inlining C struct access" - * pattern, don't call it directly, use the appropriate macro - * defined in H5Oprivate.h. - * - * Return: Success: Valid haddr_t - * Failure: HADDR_UNDEF - * - * Programmer: Quincey Koziol - * March 15 2007 - * - *------------------------------------------------------------------------- - */ -haddr_t -H5O_get_oh_addr(const H5O_t *oh) -{ - /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */ - FUNC_ENTER_NOAPI_NOINIT_NOERR - - HDassert(oh); - HDassert(oh->chunk); - - FUNC_LEAVE_NOAPI(oh->chunk[0].addr) -} /* end H5O_get_oh_addr() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_rc_and_type - * - * Purpose: Retrieve an object's reference count and type - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * November 4 2007 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_get_rc_and_type(const H5O_loc_t *loc, hid_t dxpl_id, unsigned *rc, H5O_type_t *otype) -{ - H5O_t *oh = NULL; /* Object header */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Check args */ - HDassert(loc); - - /* Get the object header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header") - - /* Set the object's reference count */ - if(rc) - *rc = oh->nlink; - - /* Retrieve the type of the object */ - if(otype) - if(H5O_obj_type_real(oh, otype) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to determine object type") - -done: - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_get_rc_and_type() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_free_visit_visited - * - * Purpose: Free the key for an object visited during a group traversal - * - * Return: Non-negative on success, negative on failure - * - * Programmer: Quincey Koziol - * Nov 25, 2007 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5O_free_visit_visited(void *item, void H5_ATTR_UNUSED *key, void H5_ATTR_UNUSED *operator_data/*in,out*/) -{ - FUNC_ENTER_NOAPI_NOINIT_NOERR - - item = H5FL_FREE(H5_obj_t, item); - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5O_free_visit_visited() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_visit_cb - * - * Purpose: Callback function for recursively visiting objects from a group - * - * Return: Success: Non-negative - * Failure: Negative - * - * Programmer: Quincey Koziol - * Nov 25, 2007 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5O_visit_cb(hid_t H5_ATTR_UNUSED group, const char *name, const H5L_info_t *linfo, - void *_udata) -{ - H5O_iter_visit_ud_t *udata = (H5O_iter_visit_ud_t *)_udata; /* User data for callback */ - H5G_loc_t obj_loc; /* Location of object */ - H5G_name_t obj_path; /* Object's group hier. path */ - H5O_loc_t obj_oloc; /* Object's object location */ - hbool_t obj_found = FALSE; /* Object at 'name' found */ - herr_t ret_value = H5_ITER_CONT; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT - - /* Sanity check */ - HDassert(name); - HDassert(linfo); - HDassert(udata); - - /* Check if this is a hard link */ - if(linfo->type == H5L_TYPE_HARD) { - H5_obj_t obj_pos; /* Object "position" for this object */ - - /* Set up opened group location to fill in */ - obj_loc.oloc = &obj_oloc; - obj_loc.path = &obj_path; - H5G_loc_reset(&obj_loc); - - /* Find the object using the LAPL passed in */ - /* (Correctly handles mounted files) */ - if(H5G_loc_find(udata->start_loc, name, &obj_loc/*out*/, udata->lapl_id, udata->dxpl_id) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, H5_ITER_ERROR, "object not found") - obj_found = TRUE; - - /* Construct unique "position" for this object */ - H5F_GET_FILENO(obj_oloc.file, obj_pos.fileno); - obj_pos.addr = obj_oloc.addr; - - /* Check if we've seen the object the link references before */ - if(NULL == H5SL_search(udata->visited, &obj_pos)) { - H5O_info_t oinfo; /* Object info */ - - /* Get the object's info */ - if(H5O_get_info(&obj_oloc, udata->dxpl_id, TRUE, &oinfo) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, H5_ITER_ERROR, "unable to get object info") - - /* Make the application callback */ - ret_value = (udata->op)(udata->obj_id, name, &oinfo, udata->op_data); - - /* Check for continuing to visit objects */ - if(ret_value == H5_ITER_CONT) { - /* If its ref count is > 1, we add it to the list of visited objects */ - /* (because it could come up again during traversal) */ - if(oinfo.rc > 1) { - H5_obj_t *new_node; /* New object node for visited list */ - - /* Allocate new object "position" node */ - if((new_node = H5FL_MALLOC(H5_obj_t)) == NULL) - HGOTO_ERROR(H5E_OHDR, H5E_NOSPACE, H5_ITER_ERROR, "can't allocate object node") - - /* Set node information */ - *new_node = obj_pos; - - /* Add to list of visited objects */ - if(H5SL_insert(udata->visited, new_node, new_node) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINSERT, H5_ITER_ERROR, "can't insert object node into visited list") - } /* end if */ - } /* end if */ - } /* end if */ - } /* end if */ - -done: - /* Release resources */ - if(obj_found && H5G_loc_free(&obj_loc) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, H5_ITER_ERROR, "can't free location") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_visit_cb() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_visit - * - * Purpose: Recursively visit an object and all the objects reachable - * from it. If the starting object is a group, all the objects - * linked to from that group will be visited. Links within - * each group are visited according to the order within the - * specified index (unless the specified index does not exist for - * a particular group, then the "name" index is used). - * - * NOTE: Soft links and user-defined links are ignored during - * this operation. - * - * NOTE: Each _object_ reachable from the initial group will only - * be visited once. If multiple hard links point to the same - * object, the first link to the object's path (according to the - * iteration index and iteration order given) will be used to in - * the callback about the object. - * - * Return: Success: The return value of the first operator that - * returns non-zero, or zero if all members were - * processed with no operator returning non-zero. - * - * Failure: Negative if something goes wrong within the - * library, or the negative value returned by one - * of the operators. - * - * Programmer: Quincey Koziol - * November 24 2007 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5O_visit(hid_t loc_id, const char *obj_name, H5_index_t idx_type, - H5_iter_order_t order, H5O_iterate_t op, void *op_data, hid_t lapl_id, - hid_t dxpl_id) -{ - H5O_iter_visit_ud_t udata; /* User data for callback */ - H5G_loc_t loc; /* Location of reference object */ - H5G_loc_t obj_loc; /* Location used to open object */ - H5G_name_t obj_path; /* Opened object group hier. path */ - H5O_loc_t obj_oloc; /* Opened object object location */ - hbool_t loc_found = FALSE; /* Entry at 'name' found */ - H5O_info_t oinfo; /* Object info struct */ - hid_t obj_id = (-1); /* ID of object */ - herr_t ret_value = FAIL; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Portably initialize user data struct to zeros */ - HDmemset(&udata, 0, sizeof(udata)); - - /* Check args */ - if(H5G_loc(loc_id, &loc) < 0) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") - - /* Set up opened group location to fill in */ - obj_loc.oloc = &obj_oloc; - obj_loc.path = &obj_path; - H5G_loc_reset(&obj_loc); - - /* Find the object's location */ - if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, dxpl_id) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "object not found") - loc_found = TRUE; - - /* Get the object's info */ - if(H5O_get_info(&obj_oloc, dxpl_id, TRUE, &oinfo) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to get object info") - - /* Open the object */ - /* (Takes ownership of the obj_loc information) */ - if((obj_id = H5O_open_by_loc(&obj_loc, lapl_id, dxpl_id, TRUE)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTOPENOBJ, FAIL, "unable to open object") - - /* Make callback for starting object */ - if((ret_value = op(obj_id, ".", &oinfo, op_data)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "can't visit objects") - - /* Check return value of first callback */ - if(ret_value != H5_ITER_CONT) - HGOTO_DONE(ret_value); - - /* Check for object being a group */ - if(oinfo.type == H5O_TYPE_GROUP) { - H5G_loc_t start_loc; /* Location of starting group */ - - /* Get the location of the starting group */ - if(H5G_loc(obj_id, &start_loc) < 0) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") - - /* Set up user data for visiting links */ - udata.obj_id = obj_id; - udata.start_loc = &start_loc; - udata.lapl_id = lapl_id; - udata.dxpl_id = dxpl_id; - udata.op = op; - udata.op_data = op_data; - - /* Create skip list to store visited object information */ - if((udata.visited = H5SL_create(H5SL_TYPE_OBJ, NULL)) == NULL) - HGOTO_ERROR(H5E_OHDR, H5E_CANTCREATE, FAIL, "can't create skip list for visited objects") - - /* If its ref count is > 1, we add it to the list of visited objects */ - /* (because it could come up again during traversal) */ - if(oinfo.rc > 1) { - H5_obj_t *obj_pos; /* New object node for visited list */ - - /* Allocate new object "position" node */ - if((obj_pos = H5FL_MALLOC(H5_obj_t)) == NULL) - HGOTO_ERROR(H5E_OHDR, H5E_NOSPACE, FAIL, "can't allocate object node") - - /* Construct unique "position" for this object */ - obj_pos->fileno = oinfo.fileno; - obj_pos->addr = oinfo.addr; - - /* Add to list of visited objects */ - if(H5SL_insert(udata.visited, obj_pos, obj_pos) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTINSERT, FAIL, "can't insert object node into visited list") - } /* end if */ - - /* Call internal group visitation routine */ - if((ret_value = H5G_visit(obj_id, ".", idx_type, order, H5O_visit_cb, &udata, lapl_id, dxpl_id)) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_BADITER, FAIL, "object visitation failed") - } /* end if */ - -done: - if(obj_id > 0) { - if(H5I_dec_app_ref(obj_id) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "unable to close object") - } /* end if */ - else if(loc_found && H5G_loc_free(&obj_loc) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "can't free location") - if(udata.visited) - H5SL_destroy(udata.visited, H5O_free_visit_visited, NULL); - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_visit() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_inc_rc - * - * Purpose: Increments the reference count on an object header - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * koziol@hdfgroup.org - * Jul 13 2008 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_inc_rc(H5O_t *oh) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(oh); - - /* Pin the object header when the reference count goes above 0 */ - if(oh->rc == 0) - if(H5AC_pin_protected_entry(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPIN, FAIL, "unable to pin object header") - - /* Increment reference count */ - oh->rc++; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_inc_rc() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_dec_rc - * - * Purpose: Decrements the reference count on an object header - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * koziol@hdfgroup.org - * Jul 13 2008 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_dec_rc(H5O_t *oh) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(oh); - - /* Decrement reference count */ - oh->rc--; - - /* Unpin the object header when the reference count goes back to 0 */ - if(oh->rc == 0) - if(H5AC_unpin_entry(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPIN, FAIL, "unable to unpin object header") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_dec_rc() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_dec_rc_by_loc - * - * Purpose: Decrement the refcount of an object header, using its - * object location information. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * koziol@hdfgroup.org - * Oct 08 2010 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O_dec_rc_by_loc(const H5O_loc_t *loc, hid_t dxpl_id) -{ - H5O_t *oh = NULL; /* Object header */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* check args */ - HDassert(loc); - - /* Get header */ - if(NULL == (oh = H5O_protect(loc, dxpl_id, H5AC__READ_ONLY_FLAG, FALSE))) - HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to protect object header") - - /* Decrement the reference count on the object header */ - /* (which will unpin it, if appropriate) */ - if(H5O_dec_rc(oh) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTDEC, FAIL, "unable to decrement reference count on object header") - -done: - /* Release the object header from the cache */ - if(oh && H5O_unprotect(loc, dxpl_id, oh, H5AC__NO_FLAGS_SET) < 0) - HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O_dec_rc_by_loc() */ - - -/*------------------------------------------------------------------------- - * Function: H5O_get_proxy - * - * Purpose: Retrieve the proxy for the object header. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * July 24 2016 - * - *------------------------------------------------------------------------- - */ -H5AC_proxy_entry_t * -H5O_get_proxy(const H5O_t *oh) -{ - FUNC_ENTER_NOAPI_NOINIT_NOERR - - /* Check args */ - HDassert(oh); - - FUNC_LEAVE_NOAPI(oh->proxy) -} /* end H5O_get_proxy() */ - - -/*------------------------------------------------------------------------- - * Function: H5O__free - * - * Purpose: Destroys an object header. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * koziol@ncsa.uiuc.edu - * Jan 15 2003 - * - *------------------------------------------------------------------------- - */ -herr_t -H5O__free(H5O_t *oh) -{ - unsigned u; /* Local index variable */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* check args */ - HDassert(oh); - HDassert(0 == oh->rc); - - /* Destroy chunks */ - if(oh->chunk) { - for(u = 0; u < oh->nchunks; u++) - oh->chunk[u].image = H5FL_BLK_FREE(chunk_image, oh->chunk[u].image); - - oh->chunk = (H5O_chunk_t *)H5FL_SEQ_FREE(H5O_chunk_t, oh->chunk); - } /* end if */ - - /* Destroy messages */ - if(oh->mesg) { - for(u = 0; u < oh->nmesgs; u++) { -#ifndef NDEBUG - /* Verify that message is clean, unless it could have been marked - * dirty by decoding */ - if(oh->ndecode_dirtied && oh->mesg[u].dirty) - oh->ndecode_dirtied--; - else - HDassert(oh->mesg[u].dirty == 0); -#endif /* NDEBUG */ - - H5O_msg_free_mesg(&oh->mesg[u]); - } /* end for */ - - /* Make sure we accounted for all the messages dirtied by decoding */ - HDassert(!oh->ndecode_dirtied); - - oh->mesg = (H5O_mesg_t *)H5FL_SEQ_FREE(H5O_mesg_t, oh->mesg); - } /* end if */ - - /* Destroy the proxy */ - if(oh->proxy) - if(H5AC_proxy_entry_dest(oh->proxy) < 0) - HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to destroy virtual entry used for proxy") - - /* destroy object header */ - oh = H5FL_FREE(H5O_t, oh); - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5O__free() */ - |