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|
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/****************/
/* Module Setup */
/****************/
#define H5SM_PACKAGE /*suppress error about including H5SMpkg */
#define H5F_PACKAGE /*suppress error about including H5Fpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fpkg.h" /* File access */
#include "H5FLprivate.h" /* Free Lists */
#include "H5MFprivate.h" /* File memory management */
#include "H5MMprivate.h" /* Memory management */
#include "H5SMpkg.h" /* Shared object header messages */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Local Prototypes */
/********************/
static herr_t H5SM_create_index(H5F_t *f, H5SM_index_header_t *header,
hid_t dxpl_id);
static herr_t H5SM_delete_index(H5F_t *f, H5SM_index_header_t *header,
hid_t dxpl_id, hbool_t delete_heap);
static haddr_t H5SM_create_list(H5F_t *f, H5SM_index_header_t *header, hid_t dxpl_id);
static herr_t H5SM_convert_list_to_btree(H5F_t * f, H5SM_index_header_t * header,
H5SM_list_t **_list, H5HF_t *fheap, hid_t dxpl_id);
static herr_t H5SM_convert_btree_to_list(H5F_t * f, H5SM_index_header_t * header, hid_t dxpl_id);
static herr_t H5SM_write_mesg(H5F_t *f, hid_t dxpl_id, H5SM_index_header_t *header,
unsigned type_id, void *mesg, unsigned *cache_flags_ptr);
static herr_t H5SM_delete_from_index(H5F_t *f, hid_t dxpl_id,
H5SM_index_header_t *header, unsigned type_id, const H5O_shared_t * mesg,
unsigned *cache_flags, void ** encoded_mesg);
static herr_t H5SM_type_to_flag(unsigned type_id, unsigned *type_flag);
/*********************/
/* Package Variables */
/*********************/
H5FL_DEFINE(H5SM_master_table_t);
H5FL_ARR_DEFINE(H5SM_index_header_t, H5O_SHMESG_MAX_NINDEXES);
H5FL_DEFINE(H5SM_list_t);
H5FL_ARR_DEFINE(H5SM_sohm_t, H5O_SHMESG_MAX_LIST_SIZE);
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5SM_init
*
* Purpose: Initializes the Shared Message interface.
*
* Creates a master SOHM table in the file and in the cache.
* This function should not be called for files that have
* SOHMs disabled in the FCPL.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Tuesday, May 2, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_init(H5F_t *f, H5P_genplist_t * fc_plist, hid_t dxpl_id)
{
H5SM_master_table_t *table = NULL;
haddr_t table_addr = HADDR_UNDEF;
unsigned num_indexes;
unsigned list_max, btree_min;
unsigned index_type_flags[H5O_SHMESG_MAX_NINDEXES];
unsigned minsizes[H5O_SHMESG_MAX_NINDEXES];
unsigned type_flags_used;
unsigned x;
hsize_t table_size;
herr_t ret_value=SUCCEED;
FUNC_ENTER_NOAPI(H5SM_init, NULL)
HDassert(f);
/* File should not already have a SOHM table */
HDassert(f->shared->sohm_addr == HADDR_UNDEF);
/* Initialize master table */
if(NULL == (table = H5FL_MALLOC(H5SM_master_table_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for SOHM table")
/* Get information from fcpl */
if(H5P_get(fc_plist, H5F_CRT_SHMSG_NINDEXES_NAME, &num_indexes)<0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get number of indexes")
if(H5P_get(fc_plist, H5F_CRT_SHMSG_INDEX_TYPES_NAME, &index_type_flags)<0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get SOHM type flags")
if(H5P_get(fc_plist, H5F_CRT_SHMSG_LIST_MAX_NAME, &list_max)<0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get SOHM list maximum")
if(H5P_get(fc_plist, H5F_CRT_SHMSG_BTREE_MIN_NAME, &btree_min)<0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get SOHM btree minimum")
if(H5P_get(fc_plist, H5F_CRT_SHMSG_INDEX_MINSIZE_NAME, &minsizes) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get SOHM message min sizes")
/* Verify that values are valid */
if(num_indexes > H5O_SHMESG_MAX_NINDEXES)
HGOTO_ERROR(H5E_PLIST, H5E_BADRANGE, FAIL, "number of indexes in property list is too large")
/* Check that type flags weren't duplicated anywhere */
type_flags_used = 0;
for(x = 0; x < num_indexes; ++x) {
if(index_type_flags[x] & type_flags_used)
HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "the same shared message type flag is assigned to more than one index")
type_flags_used |= index_type_flags[x];
}
/* Set version and number of indexes in table and in superblock.
* Right now we just use one byte to hold the number of indexes.
*/
HDassert(num_indexes < 256);
table->num_indexes = num_indexes;
/* Check that list and btree cutoffs make sense. There can't be any
* values greater than the list max but less than the btree min; the
* list max has to be greater than or equal to one less than the btree
* min.
*/
HDassert(list_max + 1 >= btree_min);
HDassert(table->num_indexes > 0 && table->num_indexes <= H5O_SHMESG_MAX_NINDEXES);
/* Allocate the SOHM indexes as an array. */
if(NULL == (table->indexes = (H5SM_index_header_t *)H5FL_ARR_MALLOC(H5SM_index_header_t, (size_t)table->num_indexes)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for SOHM indexes")
/* Initialize all of the indexes, but don't allocate space for them to
* hold messages until we actually need to write to them.
*/
for(x=0; x<table->num_indexes; x++)
{
table->indexes[x].btree_min = btree_min;
table->indexes[x].list_max = list_max;
table->indexes[x].mesg_types = index_type_flags[x];
table->indexes[x].min_mesg_size = minsizes[x];
table->indexes[x].index_addr = HADDR_UNDEF;
table->indexes[x].heap_addr = HADDR_UNDEF;
table->indexes[x].num_messages = 0;
/* Indexes start as lists unless the list-to-btree threshold is zero */
if(table->indexes[x].list_max > 0) {
table->indexes[x].index_type = H5SM_LIST;
} else {
table->indexes[x].index_type = H5SM_BTREE;
}
} /* end for */
/* Allocate space for the table on disk */
table_size = (hsize_t) H5SM_TABLE_SIZE(f) + (hsize_t) (table->num_indexes * H5SM_INDEX_HEADER_SIZE(f));
if(HADDR_UNDEF == (table_addr = H5MF_alloc(f, H5FD_MEM_SOHM_TABLE, dxpl_id, table_size)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "file allocation failed for SOHM table")
/* Cache the new table */
if(H5AC_set(f, dxpl_id, H5AC_SOHM_TABLE, table_addr, table, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTLOAD, FAIL, "can't add SOHM table to cache")
/* Record the address of the master table in the file */
f->shared->sohm_addr = table_addr;
done:
if(ret_value < 0)
{
if(table_addr != HADDR_UNDEF)
H5MF_xfree(f, H5FD_MEM_SOHM_TABLE, dxpl_id, table_addr, (hsize_t)H5SM_TABLE_SIZE(f));
if(table != NULL)
H5FL_FREE(H5SM_master_table_t, table);
}
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_init() */
/*-------------------------------------------------------------------------
* Function: H5SM_type_to_flag
*
* Purpose: Get the shared message flag for a given message type.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Tuesday, October 10, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM_type_to_flag(unsigned type_id, unsigned *type_flag)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5SM_type_to_flag)
/* Translate the H5O type_id into an H5SM type flag */
switch(type_id) {
case H5O_SDSPACE_ID:
*type_flag = H5O_MESG_SDSPACE_FLAG;
break;
case H5O_DTYPE_ID:
*type_flag = H5O_MESG_DTYPE_FLAG;
break;
#ifdef NOT_YET
case H5O_FILL_ID:
#endif /* NOT_YET */
case H5O_FILL_NEW_ID:
*type_flag = H5O_MESG_FILL_FLAG;
break;
case H5O_PLINE_ID:
*type_flag = H5O_MESG_PLINE_FLAG;
break;
case H5O_ATTR_ID:
*type_flag = H5O_MESG_ATTR_FLAG;
break;
default:
HGOTO_ERROR(H5E_OHDR, H5E_BADTYPE, FAIL, "unknown message type ID")
} /* end switch */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_type_to_flag() */
/*-------------------------------------------------------------------------
* Function: H5SM_get_index
*
* Purpose: Get the index number for a given message type.
*
* Returns the number of the index in the supplied table
* that holds messages of type type_id, or negative if
* there is no index for this message type.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Tuesday, October 10, 2006
*
*-------------------------------------------------------------------------
*/
ssize_t
H5SM_get_index(const H5SM_master_table_t *table, unsigned type_id)
{
ssize_t x;
unsigned type_flag;
ssize_t ret_value = FAIL;
FUNC_ENTER_NOAPI_NOINIT(H5SM_get_index)
/* Translate the H5O type_id into an H5SM type flag */
if(H5SM_type_to_flag(type_id, &type_flag) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't map message type to flag")
/* Search the indexes until we find one that matches this flag or we've
* searched them all.
*/
for(x = 0; x < table->num_indexes; ++x)
if(table->indexes[x].mesg_types & type_flag)
HGOTO_DONE(x)
/* At this point, ret_value is either the location of the correct
* index or it's still FAIL because we didn't find an index.
*/
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_get_index() */
/*-------------------------------------------------------------------------
* Function: H5SM_type_shared
*
* Purpose: Check if a given message type is shared in a file.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, December 12, 2006
*
*-------------------------------------------------------------------------
*/
htri_t
H5SM_type_shared(H5F_t *f, unsigned type_id, hid_t dxpl_id)
{
H5SM_master_table_t *table = NULL; /* Shared object master table */
unsigned type_flag; /* Flag corresponding to message type */
size_t u; /* Local index variable */
htri_t ret_value = FALSE; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5SM_type_shared)
/* Translate the H5O type_id into an H5SM type flag */
if(H5SM_type_to_flag(type_id, &type_flag) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't map message type to flag")
/* Look up the master SOHM table */
if(H5F_addr_defined(f->shared->sohm_addr)) {
if(NULL == (table = (H5SM_master_table_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, NULL, NULL, H5AC_READ)))
HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load SOHM master table")
} /* end if */
else
/* No shared messages of any type */
HGOTO_DONE(FALSE)
/* Search the indexes until we find one that matches this flag or we've
* searched them all.
*/
for(u = 0; u < table->num_indexes; u++)
if(table->indexes[u].mesg_types & type_flag)
HGOTO_DONE(TRUE)
done:
/* Release the master SOHM table */
if(table && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, table, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to close SOHM master table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_type_shared() */
/*-------------------------------------------------------------------------
* Function: H5SM_get_fheap_addr
*
* Purpose: Gets the address of the fractal heap used to store
* messages of type type_id.
*
* Return: Non-negative on success/negative on failure
*
* Programmer: James Laird
* Tuesday, October 3, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_get_fheap_addr(H5F_t *f, hid_t dxpl_id, unsigned type_id, haddr_t *fheap_addr)
{
H5SM_master_table_t *table = NULL; /* Shared object master table */
ssize_t index_num; /* Which index */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5SM_get_fheap_addr, FAIL)
/* Sanity checks */
HDassert(f);
HDassert(fheap_addr);
/* Look up the master SOHM table */
if(NULL == (table = (H5SM_master_table_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, NULL, NULL, H5AC_READ)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM master table")
/* Look up index for message type */
if((index_num = H5SM_get_index(table, type_id)) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTPROTECT, FAIL, "unable to find correct SOHM index")
/* Retrieve heap address for index */
*fheap_addr = table->indexes[index_num].heap_addr;
done:
/* Release the master SOHM table */
if(table && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, table, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to close SOHM master table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_get_fheap_addr() */
/*-------------------------------------------------------------------------
* Function: H5SM_create_index
*
* Purpose: Allocates storage for an index, populating the HEADER struct.
*
* Return: Non-negative on success/negative on failure
*
* Programmer: James Laird
* Tuesday, May 2, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM_create_index(H5F_t *f, H5SM_index_header_t *header, hid_t dxpl_id)
{
haddr_t list_addr=HADDR_UNDEF; /* Address of SOHM list */
haddr_t tree_addr=HADDR_UNDEF; /* Address of SOHM B-tree */
H5HF_create_t fheap_cparam; /* Fractal heap creation parameters */
H5HF_t *fheap = NULL;
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_create_index, FAIL)
HDassert(header);
HDassert(header->index_addr == HADDR_UNDEF);
HDassert(header->btree_min <= header->list_max + 1);
/* In most cases, the index starts as a list */
if(header->list_max > 0)
{
header->index_type = H5SM_LIST;
if((list_addr = H5SM_create_list(f, header, dxpl_id)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_SOHM, H5E_CANTCREATE, FAIL, "list creation failed for SOHM index")
header->index_addr = list_addr;
}
else /* index is a B-tree */
{
header->index_type = H5SM_BTREE;
if(H5B2_create(f, dxpl_id, H5SM_INDEX, (size_t)H5SM_B2_NODE_SIZE,
(size_t)H5SM_SOHM_ENTRY_SIZE(f), H5SM_B2_SPLIT_PERCENT,
H5SM_B2_MERGE_PERCENT, &tree_addr) <0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTCREATE, FAIL, "B-tree creation failed for SOHM index")
header->index_addr = tree_addr;
}
/* Create a heap to hold the shared messages that the list or B-tree will index */
HDmemset(&fheap_cparam, 0, sizeof(fheap_cparam));
fheap_cparam.managed.width = H5O_FHEAP_MAN_WIDTH;
fheap_cparam.managed.start_block_size = H5O_FHEAP_MAN_START_BLOCK_SIZE;
fheap_cparam.managed.max_direct_size = H5O_FHEAP_MAN_MAX_DIRECT_SIZE;
fheap_cparam.managed.max_index = H5O_FHEAP_MAN_MAX_INDEX;
fheap_cparam.managed.start_root_rows = H5O_FHEAP_MAN_START_ROOT_ROWS;
fheap_cparam.checksum_dblocks = H5O_FHEAP_CHECKSUM_DBLOCKS;
fheap_cparam.id_len = 0;
fheap_cparam.max_man_size = H5O_FHEAP_MAX_MAN_SIZE;
if(NULL == (fheap = H5HF_create(f, dxpl_id, &fheap_cparam)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "unable to create fractal heap")
if(H5HF_get_heap_addr(fheap, &(header->heap_addr )) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTGETSIZE, FAIL, "can't get fractal heap address")
#ifndef NDEBUG
{
size_t fheap_id_len; /* Size of a fractal heap ID */
/* Sanity check ID length */
if(H5HF_get_id_len(fheap, &fheap_id_len) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTGETSIZE, FAIL, "can't get fractal heap ID length")
HDassert(fheap_id_len == H5O_FHEAP_ID_LEN);
}
#endif /* NDEBUG */
done:
/* Close the fractal heap if one has been created */
if(fheap && H5HF_close(fheap, dxpl_id) < 0)
HDONE_ERROR(H5E_HEAP, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_create_index */
/*-------------------------------------------------------------------------
* Function: H5SM_delete_index
*
* Purpose: De-allocates storage for an index whose header is HEADER.
*
* If DELETE_HEAP is TRUE, deletes the index's heap, eliminating
* it completely.
*
* If DELETE_HEAP is FALSE, the heap is not deleted. This is
* useful when deleting only the index header as the index is
* converted from a list to a B-tree and back again.
*
* Return: Non-negative on success/negative on failure
*
* Programmer: James Laird
* Thursday, January 4, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM_delete_index(H5F_t *f, H5SM_index_header_t *header, hid_t dxpl_id, hbool_t delete_heap)
{
hsize_t list_size; /* Size of list on disk */
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_delete_index, FAIL)
/* Determine whether index is a list or a B-tree. */
if(header->index_type == H5SM_LIST) {
/* Eject entry from cache */
if(H5AC_expunge_entry(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTREMOVE, FAIL, "unable to remove list index from cache")
/* Free the file space used */
list_size = H5SM_LIST_SIZE(f, header->list_max);
if(H5MF_xfree(f, H5FD_MEM_SOHM_INDEX, dxpl_id, header->index_addr, list_size) < 0)
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to free shared message list")
} else {
HDassert(header->index_type == H5SM_BTREE);
/* Delete from the B-tree. */
if(H5B2_delete(f, dxpl_id, H5SM_INDEX, header->index_addr, NULL, NULL) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTDELETE, FAIL, "unable to delete B-tree")
/* Revert to list unless B-trees can have zero records */
if(header->btree_min > 0)
header->index_type = H5SM_LIST;
}
/* Free the index's heap if requested. */
if(delete_heap == TRUE) {
if(H5HF_delete(f, dxpl_id, header->heap_addr) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTDELETE, FAIL, "unable to delete fractal heap")
}
header->index_addr = HADDR_UNDEF;
header->heap_addr = HADDR_UNDEF;
header->num_messages = 0;
done:
FUNC_LEAVE_NOAPI(ret_value)
}/* end H5SM_delete_index */
/*-------------------------------------------------------------------------
* Function: H5SM_create_list
*
* Purpose: Creates a list of SOHM messages.
*
* Called when a new index is created from scratch or when a
* B-tree needs to be converted back into a list.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Monday, August 28, 2006
*
*-------------------------------------------------------------------------
*/
static haddr_t
H5SM_create_list(H5F_t *f, H5SM_index_header_t * header, hid_t dxpl_id)
{
H5SM_list_t *list = NULL; /* List of messages */
hsize_t x; /* Counter variable */
hsize_t size = 0; /* Size of list on disk */
size_t num_entries; /* Number of messages to create in list */
haddr_t addr = HADDR_UNDEF; /* Address of the list on disk */
haddr_t ret_value;
FUNC_ENTER_NOAPI(H5SM_create_list, HADDR_UNDEF)
HDassert(f);
HDassert(header);
num_entries = header->list_max;
/* Allocate list in memory */
if((list = H5FL_MALLOC(H5SM_list_t)) == NULL)
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, HADDR_UNDEF, "file allocation failed for SOHM list")
if((list->messages = (H5SM_sohm_t *)H5FL_ARR_MALLOC(H5SM_sohm_t, num_entries)) == NULL)
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, HADDR_UNDEF, "file allocation failed for SOHM list")
/* Initialize messages in list */
HDmemset(list->messages, 0, sizeof(H5SM_sohm_t) * num_entries);
for(x=0; x<num_entries; x++) {
list->messages[x].ref_count=0;
}
list->header = header;
/* Allocate space for the list on disk */
size = H5SM_LIST_SIZE(f, num_entries);
if(HADDR_UNDEF == (addr = H5MF_alloc(f, H5FD_MEM_SOHM_INDEX, dxpl_id, size)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, HADDR_UNDEF, "file allocation failed for SOHM list")
/* Put the list into the cache */
if(H5AC_set(f, dxpl_id, H5AC_SOHM_LIST, addr, list, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTINS, HADDR_UNDEF, "can't add SOHM list to cache")
/* Set return value */
ret_value = addr;
done:
if(ret_value == HADDR_UNDEF)
{
if(list != NULL)
{
if(list->messages != NULL)
H5FL_ARR_FREE(H5SM_sohm_t, list->messages);
H5FL_FREE(H5SM_list_t, list);
}
if(addr != HADDR_UNDEF)
H5MF_xfree(f, H5FD_MEM_SOHM_INDEX, dxpl_id, addr, size);
}
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_create_list */
/*-------------------------------------------------------------------------
* Function: H5SM_convert_list_to_btree
*
* Purpose: Given a list index, turns it into a B-tree index. This is
* done when too many messages are added to the list.
*
* Requires that *_LIST be a valid list and currently protected
* in the cache. Unprotects (and expunges) *_LIST from the cache.
*
* _LIST needs to be a double pointer so that the calling function
* knows if it is released from the cache if this function exits
* in error. Trying to free it again will trigger an assert.
*
* Return: Non-negative on success
* Negative on failure
*
* Programmer: James Laird
* Thursday, January 4, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_convert_list_to_btree(H5F_t * f, H5SM_index_header_t * header,
H5SM_list_t **_list, H5HF_t *fheap, hid_t dxpl_id)
{
H5SM_index_header_t temp_header;
H5SM_list_t *list;
H5SM_mesg_key_t key;
haddr_t tree_addr;
size_t x;
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_convert_list_to_btree, FAIL)
HDassert(_list && *_list);
HDassert(header);
list = *_list;
/* Copy the old index header */
HDmemcpy(&temp_header, header, sizeof(H5SM_index_header_t));
if(H5B2_create(f, dxpl_id, H5SM_INDEX, (size_t)H5SM_B2_NODE_SIZE,
(size_t)H5SM_SOHM_ENTRY_SIZE(f), H5SM_B2_SPLIT_PERCENT,
H5SM_B2_MERGE_PERCENT, &tree_addr) <0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTCREATE, FAIL, "B-tree creation failed for SOHM index")
/* Insert each record into the new B-tree */
for(x = 0; x < header->list_max; x++)
{
/* Set up key values that all messages will use. Since these messages
* are in the heap, they have a heap ID and no encoding.
*/
key.encoding = NULL;
key.encoding_size = 0;
key.fheap = fheap;
if(list->messages[x].ref_count > 0)
{
key.message = list->messages[x];
if(H5B2_insert(f, dxpl_id, H5SM_INDEX, tree_addr, &key) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "couldn't add SOHM to B-tree")
}
}
/* Unprotect list in cache and release heap */
if(H5AC_unprotect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, list, H5AC__DELETED_FLAG) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to release SOHM list")
*_list = list = NULL;
/* Delete the old list index (but not its heap, which the new index is
* still using!)
*/
HDmemcpy(&temp_header, header, sizeof(H5SM_index_header_t));
if(H5SM_delete_index(f, &temp_header, dxpl_id, FALSE) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTDELETE, FAIL, "can't free list index");
header->index_addr = tree_addr;
header->index_type = H5SM_BTREE;
done:
FUNC_LEAVE_NOAPI(ret_value)
}
/*-------------------------------------------------------------------------
* Function: H5SM_convert_btree_to_list
*
* Purpose: Given a B-tree index, turns it into a list index. This is
* done when too many messages are deleted from the B-tree.
*
* Return: Non-negative on success
* Negative on failure
*
* Programmer: James Laird
* Thursday, January 4, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM_convert_btree_to_list(H5F_t * f, H5SM_index_header_t * header, hid_t dxpl_id)
{
H5SM_list_t *list = NULL;
haddr_t btree_addr;
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_convert_btree_to_list, FAIL)
/* Remember the address of the old B-tree, but change the header over to be
* a list..
*/
btree_addr = header->index_addr;
header->num_messages = 0;
header->index_type = H5SM_LIST;
/* Create a new list index */
if(HADDR_UNDEF == (header->index_addr = H5SM_create_list(f, header, dxpl_id)))
HGOTO_ERROR(H5E_SOHM, H5E_CANTINIT, FAIL, "unable to create shared message list")
if(NULL == (list = (H5SM_list_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, NULL, header, H5AC_WRITE)))
HGOTO_ERROR(H5E_SOHM, H5E_CANTPROTECT, FAIL, "unable to load SOHM list index")
/* Delete the B-tree and have messages copy themselves to the
* list as they're deleted
*/
if(H5B2_delete(f, dxpl_id, H5SM_INDEX, btree_addr, H5SM_btree_convert_to_list_op, list) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTDELETE, FAIL, "unable to delete B-tree")
done:
/* Release the SOHM list from the cache */
if(list && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, list, H5AC__DIRTIED_FLAG) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to unprotect SOHM index")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_convert_btree_to_list() */
/*-------------------------------------------------------------------------
* Function: H5SM_try_share
*
* Purpose: Attempts to share an object header message. If the message
* should be shared (if sharing has been enabled and this
* message qualified), turns the message into a shared message.
*
* If not, returns FALSE and does nothing.
*
* If this message was already shared, increments its reference
* count and leaves it otherwise unchanged.
*
* Return: TRUE if message is now a SOHM
* FALSE if this message is not a SOHM
* Negative on failure
*
* Programmer: James Laird
* Tuesday, May 2, 2006
*
*-------------------------------------------------------------------------
*/
htri_t
H5SM_try_share(H5F_t *f, hid_t dxpl_id, unsigned type_id, void *mesg)
{
size_t mesg_size;
H5SM_master_table_t *table = NULL;
unsigned cache_flags = H5AC__NO_FLAGS_SET;
ssize_t index_num;
htri_t tri_ret;
herr_t ret_value = TRUE;
FUNC_ENTER_NOAPI(H5SM_try_share, FAIL)
/* Check whether this message ought to be shared or not */
/* If sharing is disabled in this file, don't share the message */
if(f->shared->sohm_addr == HADDR_UNDEF)
HGOTO_DONE(FALSE);
/* Type-specific check */
if((tri_ret = H5O_msg_can_share(type_id, mesg)) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_BADTYPE, FAIL, "can_share callback returned error")
if(tri_ret == FALSE)
HGOTO_DONE(FALSE);
/* Look up the master SOHM table */
if(NULL == (table = (H5SM_master_table_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, NULL, NULL, H5AC_WRITE)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM master table")
/* Find the right index for this message type. If there is no such index
* then this type of message isn't shareable
*/
if((index_num = H5SM_get_index(table, type_id)) < 0)
{
H5E_clear_stack(NULL); /*ignore error*/
HGOTO_DONE(FALSE);
} /* end if */
/* If the message isn't big enough, don't bother sharing it */
if(0 == (mesg_size = H5O_msg_mesg_size(f, type_id, mesg, (size_t)0)))
HGOTO_ERROR(H5E_OHDR, H5E_BADMESG, FAIL, "unable to get OH message size")
if(mesg_size < table->indexes[index_num].min_mesg_size)
HGOTO_DONE(FALSE);
/* At this point, the message will be shared. */
/* If the index hasn't been allocated yet, create it */
if(table->indexes[index_num].index_addr == HADDR_UNDEF)
{
if(H5SM_create_index(f, &(table->indexes[index_num]), dxpl_id) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTINIT, FAIL, "unable to create SOHM index")
cache_flags |= H5AC__DIRTIED_FLAG;
}
/* Write the message as a shared message */
if(H5SM_write_mesg(f, dxpl_id, &(table->indexes[index_num]), type_id, mesg, &cache_flags) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTINSERT, FAIL, "can't write shared message")
done:
/* Release the master SOHM table */
if(table && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, table, cache_flags) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTRELEASE, FAIL, "unable to close SOHM master table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_try_share() */
/*-------------------------------------------------------------------------
* Function: H5SM_write_mesg
*
* Purpose: Writes a message to an existing index and change the message
* to reflect that it's now shared.
*
* If the message is already in the index, increment its
* reference count instead of writing it again and make the
* user's copy point to the copy we wrote before.
*
* The index could be a list or a B-tree.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Tuesday, May 2, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM_write_mesg(H5F_t *f, hid_t dxpl_id, H5SM_index_header_t *header,
unsigned type_id, void *mesg, unsigned *cache_flags_ptr)
{
H5O_shared_t *sh_mesg = (H5O_shared_t *)mesg; /* Pointer to message's shared message info */
unsigned old_sh_mesg_flags; /* Message's current shared message flags */
H5SM_list_t *list = NULL; /* List index */
H5SM_mesg_key_t key; /* Key used to search the index */
H5O_shared_t shared; /* Shared H5O message */
hsize_t list_pos; /* Position in a list index */
hbool_t found = FALSE; /* Was the message in the index? */
H5HF_t *fheap = NULL; /* Fractal heap handle */
size_t buf_size; /* Size of the encoded message */
void * encoding_buf = NULL; /* Buffer for encoded message */
size_t empty_pos = UFAIL; /* Empty entry in list */
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_write_mesg, FAIL)
HDassert(cache_flags_ptr);
HDassert(header);
HDassert(header->index_type != H5SM_BADTYPE);
/* Preserve message's shared message info while getting the
* "real" encoded size & buffer (*ick* - QAK)
* (XXX: Harmless but ugly for message classes that aren't using shared
* message method interface yet - QAK)
*/
old_sh_mesg_flags = sh_mesg->flags;
sh_mesg->flags = 0;
/* Encode the message to be written */
if((buf_size = H5O_msg_raw_size(f, type_id, mesg)) <= 0)
HGOTO_ERROR(H5E_OHDR, H5E_BADSIZE, FAIL, "can't find message size")
if(NULL == (encoding_buf = H5MM_calloc(buf_size)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "can't allocate buffer for encoding")
if(H5O_msg_encode(f, type_id, (unsigned char *)encoding_buf, mesg) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTENCODE, FAIL, "can't encode message to be shared")
/* Restore message's shared message info (*ick* - QAK) */
sh_mesg->flags = old_sh_mesg_flags;
/* Open the fractal heap for this index */
if(NULL == (fheap = H5HF_open(f, dxpl_id, header->heap_addr)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
/* Set up a key for the message to be written */
key.message.fheap_id = 0; /* Message doesn't yet have a heap ID */
key.message.hash = H5_checksum_lookup3(encoding_buf, buf_size, type_id);
key.message.ref_count = 1;
key.encoding = encoding_buf;
key.encoding_size = buf_size;
key.fheap = fheap;
/* Assume the message is already in the index and try to increment its
* reference count. If this fails, the message isn't in the index after
* all and we'll need to add it.
*/
if(header->index_type == H5SM_LIST)
{
/* The index is a list; get it from the cache */
if(NULL == (list = (H5SM_list_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, NULL, header, H5AC_WRITE)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM index")
/* See if the message is already in the index and get its location.
* Also record the first empty list position we find in case we need it
* later.
*/
list_pos = H5SM_find_in_list(list, &key, &empty_pos);
if(list_pos != UFAIL)
{
/* The message was in the index. Increment its reference count. */
++(list->messages[list_pos].ref_count);
/* Set up the shared location to point to the shared location */
shared.u.heap_id = list->messages[list_pos].fheap_id;
found = TRUE;
} /* end if */
} /* end if */
else /* Index is a B-tree */
{
HDassert(header->index_type == H5SM_BTREE);
/* If this returns failure, it means that the message wasn't found. */
/* If it succeeds, the heap_id in the shared struct will be set */
if(H5B2_modify(f, dxpl_id, H5SM_INDEX, header->index_addr, &key, H5SM_incr_ref, &shared.u.heap_id) >= 0)
found = TRUE;
} /* end else */
/* Set up a shared message so that we can make this message shared once it's
* written to the index. This message is always stored to the heap, not to
* an object header.
*/
shared.flags = H5O_SHARED_IN_HEAP_FLAG;
/* If the message isn't in the list, add it */
if(!found)
{
/* Put the message in the heap and record its new heap ID */
if(H5HF_insert(fheap, dxpl_id, key.encoding_size, key.encoding, &shared.u.heap_id) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTINSERT, FAIL, "unable to insert message into fractal heap")
key.message.fheap_id = shared.u.heap_id;
/* Check whether the list has grown enough that it needs to become a B-tree */
if(header->index_type == H5SM_LIST && header->num_messages >= header->list_max)
{
if(H5SM_convert_list_to_btree(f, header, &list, fheap, dxpl_id) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTDELETE, FAIL, "unable to convert list to B-tree")
}
/* Insert the new message into the SOHM index */
if(header->index_type == H5SM_LIST)
{
/* Index is a list. Find an empty spot if we haven't already */
if(empty_pos == UFAIL) {
if((H5SM_find_in_list(list, NULL, &empty_pos) == UFAIL) || empty_pos == UFAIL)
HGOTO_ERROR(H5E_SOHM, H5E_CANTINSERT, FAIL, "unable to find empty entry in list")
}
/* Insert message into list */
HDassert(list->messages[empty_pos].ref_count == 0);
list->messages[empty_pos] = key.message;
HDassert(list->messages[empty_pos].ref_count > 0);
}
else /* Index is a B-tree */
{
HDassert(header->index_type == H5SM_BTREE);
if(H5B2_insert(f, dxpl_id, H5SM_INDEX, header->index_addr, &key) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "couldn't add SOHM to B-tree")
}
++(header->num_messages);
(*cache_flags_ptr) |= H5AC__DIRTIED_FLAG;
}
/* Change the original message passed in to reflect that it's now shared */
if(H5O_msg_set_share(type_id, &shared, mesg) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_BADMESG, FAIL, "unable to set sharing information")
done:
/* Release the fractal heap if we opened it */
if(fheap && H5HF_close(fheap, dxpl_id) < 0)
HDONE_ERROR(H5E_HEAP, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
/* If we got a list out of the cache, release it (it is always dirty after writing a message) */
if(list && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, list, H5AC__DIRTIED_FLAG) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to close SOHM index")
if(encoding_buf)
encoding_buf = H5MM_xfree(encoding_buf);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_write_mesg() */
/*-------------------------------------------------------------------------
* Function: H5SM_try_delete
*
* Purpose: Given an object header message that is being deleted,
* checks if it is a SOHM. If so, decrements its reference
* count.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Tuesday, May 2, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_try_delete(H5F_t *f, hid_t dxpl_id, unsigned type_id,
const H5O_shared_t *sh_mesg)
{
H5SM_master_table_t *table = NULL;
unsigned cache_flags = H5AC__NO_FLAGS_SET;
ssize_t index_num;
void *mesg_buf = NULL;
void *native_mesg = NULL;
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_try_delete, FAIL)
HDassert(f);
HDassert(sh_mesg);
/* Make sure SHARED_IN_HEAP flag is set; if not, there's no message to delete */
if(0 == (sh_mesg->flags & H5O_SHARED_IN_HEAP_FLAG))
HGOTO_DONE(SUCCEED);
HDassert(f->shared->sohm_addr != HADDR_UNDEF);
/* Look up the master SOHM table */
if(NULL == (table = (H5SM_master_table_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, NULL, NULL, H5AC_WRITE)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM master table")
/* Find the correct index and try to delete from it */
if((index_num = H5SM_get_index(table, type_id)) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_NOTFOUND, FAIL, "unable to find correct SOHM index")
/* If mesg_buf is not NULL, the message's reference count has reached
* zero and any file space it uses needs to be freed. mesg_buf holds the
* serialized form of the message.
*/
if(H5SM_delete_from_index(f, dxpl_id, &(table->indexes[index_num]), type_id, sh_mesg, &cache_flags, &mesg_buf) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTDELETE, FAIL, "unable to delete mesage from SOHM index")
/* Release the master SOHM table */
if(H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, table, cache_flags) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTRELEASE, FAIL, "unable to close SOHM master table")
table = NULL;
/* If buf was allocated, delete the message it holds. This message may
* reference other shared messages that also need to be deleted, so the
* master table needs to be unprotected when we do this.
*/
if(mesg_buf) {
if(NULL == (native_mesg = H5O_msg_decode(f, dxpl_id, type_id, mesg_buf)))
HGOTO_ERROR(H5E_OHDR, H5E_CANTDECODE, FAIL, "can't decode shared message.")
if(H5O_msg_delete(f, dxpl_id, type_id, native_mesg) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "can't delete shared message.")
} /* end if */
done:
/* Release the master SOHM table on error */
if(table && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, table, cache_flags) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTRELEASE, FAIL, "unable to close SOHM master table")
if(native_mesg)
H5O_msg_free(type_id, native_mesg);
/* Free buf */
if(mesg_buf)
mesg_buf = H5MM_xfree(mesg_buf);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_try_delete() */
/*-------------------------------------------------------------------------
* Function: H5SM_find_in_list
*
* Purpose: Find a message's location in a list. Also find the first
* empty location in the list (since if we don't find the
* message, we may want to insert it into an open spot).
*
* If KEY is NULL, simply find the first empty location in the
* list.
*
* If EMPTY_POS is NULL, don't store anything in it.
*
* Return: Message's position in the list on success
* UFAIL if message couldn't be found
* empty_pos set to position of empty message or UFAIL.
*
* Programmer: James Laird
* Tuesday, May 2, 2006
*
*-------------------------------------------------------------------------
*/
size_t
H5SM_find_in_list(H5SM_list_t *list, const H5SM_mesg_key_t *key, size_t *empty_pos)
{
size_t x;
size_t ret_value;
FUNC_ENTER_NOAPI(H5SM_find_in_list, UFAIL)
HDassert(list);
/* Both key and empty_pos can be NULL, but not both! */
HDassert(key || empty_pos);
/* Initialize empty_pos to an invalid value */
if(empty_pos)
*empty_pos = UFAIL;
/* Find the first (only) message equal to the key passed in.
* Also record the first empty position we find.
*/
for(x = 0; x < list->header->list_max; x++) {
if(key && (list->messages[x].ref_count > 0) &&
(0 == H5SM_message_compare(key, &(list->messages[x]))))
HGOTO_DONE(x)
else if(empty_pos && *empty_pos == UFAIL && list->messages[x].ref_count == 0)
*empty_pos = x;
}
/* If we reached this point, we didn't find the message */
HGOTO_ERROR(H5E_SOHM, H5E_NOTFOUND, UFAIL, "message not in list")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_find_in_list */
/*-------------------------------------------------------------------------
* Function: H5SM_get_hash_fh_cb
*
* Purpose: Callback for fractal heap operator, to make copy of link when
* when lookup up a link by index
*
* Return: SUCCEED/FAIL
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Nov 7 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_get_hash_fh_cb(const void *obj, size_t obj_len, void *_udata)
{
H5SM_fh_ud_gh_t *udata = (H5SM_fh_ud_gh_t *)_udata; /* User data for fractal heap 'op' callback */
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SM_get_hash_fh_cb)
/* Compute hash value on raw message */
udata->hash = H5_checksum_lookup3(obj, obj_len, udata->type_id);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM_get_hash_fh_cb() */
/*-------------------------------------------------------------------------
* Function: H5SM_delete_from_index
*
* Purpose: Decrement the reference count for a particular message in this
* index. If the reference count reaches zero, allocate a buffer
* to hold the serialized form of this message so that any
* resources it uses can be freed, and return this buffer in
* ENCODED_MESG.
*
* Return: Non-negative on success
* Negative on failure
*
* Programmer: James Laird
* Tuesday, May 2, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM_delete_from_index(H5F_t *f, hid_t dxpl_id, H5SM_index_header_t *header,
unsigned type_id, const H5O_shared_t * mesg, unsigned *cache_flags,
void ** /*out*/ encoded_mesg)
{
H5SM_list_t *list = NULL;
H5SM_mesg_key_t key;
H5SM_sohm_t message; /* Deleted message returned from index */
size_t list_pos = UFAIL; /* Position of the message in the list */
H5HF_t *fheap = NULL; /* Fractal heap that contains the message */
H5SM_fh_ud_gh_t udata; /* User data for fractal heap 'op' callback */
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_delete_from_index, FAIL)
HDassert(header);
HDassert(mesg);
HDassert(cache_flags);
HDassert(mesg->flags & H5O_SHARED_IN_HEAP_FLAG);
HDassert(*encoded_mesg == NULL);
/* Open the heap that this message is in */
if(NULL == (fheap = H5HF_open(f, dxpl_id, header->heap_addr)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
/* Prepare user data for fractal heap 'op' callback */
udata.type_id = type_id;
/* Compute the hash value for the B-tree lookup */
if(H5HF_op(fheap, dxpl_id, &(mesg->u.heap_id), H5SM_get_hash_fh_cb, &udata) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTGET, FAIL, "can't access message in fractal heap")
/* Set up key for message to be deleted. */
key.message.fheap_id = mesg->u.heap_id;
key.message.hash = udata.hash;
key.message.ref_count = 0; /* Refcount isn't relevant here */
key.encoding = NULL;
key.encoding_size = 0;
key.fheap = fheap;
/* Try to find the message in the index */
if(header->index_type == H5SM_LIST)
{
/* If the index is stored as a list, get it from the cache */
if(NULL == (list = (H5SM_list_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, NULL, header, H5AC_WRITE)))
HGOTO_ERROR(H5E_SOHM, H5E_CANTPROTECT, FAIL, "unable to load SOHM index")
/* Find the message in the list */
if((list_pos = H5SM_find_in_list(list, &key, NULL)) == UFAIL)
HGOTO_ERROR(H5E_SOHM, H5E_NOTFOUND, FAIL, "message not in index")
--(list->messages[list_pos].ref_count);
/* Copy the message */
message = list->messages[list_pos];
}
else /* Index is a B-tree */
{
HDassert(header->index_type == H5SM_BTREE);
/* If this returns failure, it means that the message wasn't found.
* If it succeeds, a copy of the modified message will be returned. */
if(H5B2_modify(f, dxpl_id, H5SM_INDEX, header->index_addr, &key, H5SM_decr_ref, &message) <0)
HGOTO_ERROR(H5E_SOHM, H5E_NOTFOUND, FAIL, "message not in index")
}
/* If the ref count is zero, delete the message from the index */
if(message.ref_count <= 0)
{
size_t buf_size;
/* Close the message being deleted, since it may need to adjust
* other reference counts (e.g., an attribute needs to free its
* shared datatype).
*/
/* Get the size of the message in the heap */
if(H5HF_get_obj_len(fheap, dxpl_id, &(message.fheap_id), &buf_size) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "can't get message size from fractal heap.")
/* Allocate a buffer to hold the message */
if(NULL == (*encoded_mesg = H5MM_malloc(buf_size)))
HGOTO_ERROR(H5E_OHDR, H5E_NOSPACE, FAIL, "memory allocation failed")
/* Remove the message from the index */
if(header->index_type == H5SM_LIST)
list->messages[list_pos].ref_count = 0;
else
{
if(H5B2_remove(f, dxpl_id, H5SM_INDEX, header->index_addr, &key, NULL, NULL) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTREMOVE, FAIL, "unable to delete message")
}
/* Updated the index header, so set its dirty flag */
--header->num_messages;
*cache_flags |= H5AC__DIRTIED_FLAG;
/* Retrieve the message from the heap so we can return it (to free any
* other messages it may reference)
*/
if(H5HF_read(fheap, dxpl_id, &(message.fheap_id), *encoded_mesg) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, FAIL, "can't read message from fractal heap.")
/* Remove the message from the heap */
if(H5HF_remove(fheap, dxpl_id, &(message.fheap_id)) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTREMOVE, FAIL, "unable to remove message from heap")
/* If there are no messages left in the index, delete it */
if(header->num_messages == 0) {
/* Unprotect cache and release heap */
if(list && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, list, H5AC__DELETED_FLAG) < 0)
HGOTO_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to release SOHM list")
list = NULL;
HDassert(fheap);
if(H5HF_close(fheap, dxpl_id) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
fheap = NULL;
/* Delete the index and its heap */
if(H5SM_delete_index(f, header, dxpl_id, TRUE) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTDELETE, FAIL, "can't delete empty index")
} else if(header->index_type == H5SM_BTREE && header->num_messages < header->btree_min)
{
/* Otherwise, if we've just passed the btree-to-list cutoff, convert
* this B-tree into a list
*/
if(H5SM_convert_btree_to_list(f, header, dxpl_id) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_CANTINIT, FAIL, "unable to convert btree to list")
} /* end if */
} /* end if */
done:
/* Release the SOHM list */
if(list && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, list, H5AC__DIRTIED_FLAG) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to close SOHM index")
/* Release the fractal heap if we opened it */
if(fheap && H5HF_close(fheap, dxpl_id) < 0)
HDONE_ERROR(H5E_HEAP, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
/* Free the serialized message buffer on error */
if(ret_value < 0 && *encoded_mesg)
*encoded_mesg = H5MM_xfree(*encoded_mesg);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_delete_from_index() */
/*-------------------------------------------------------------------------
* Function: H5SM_get_info
*
* Purpose: Get the list-to-btree and btree-to-list cutoff numbers for
* an index within the master table.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Thursday, May 11, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_get_info(H5F_t *f, unsigned *index_flags, unsigned *minsizes,
unsigned *list_max, unsigned *btree_min, hid_t dxpl_id)
{
H5SM_master_table_t *table = NULL;
haddr_t table_addr;
uint8_t i;
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(H5SM_get_info, FAIL)
HDassert(f && f->shared);
HDassert(f->shared->sohm_addr != HADDR_UNDEF);
/* Convenience variables */
table_addr = f->shared->sohm_addr;
/* Read the rest of the SOHM table information from the cache */
if(NULL == (table = (H5SM_master_table_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_TABLE, table_addr, NULL, NULL, H5AC_READ)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM master table")
/* Return info */
*list_max = table->indexes[0].list_max;
*btree_min = table->indexes[0].btree_min;
/* Get information about the individual SOHM indexes */
for(i=0; i<table->num_indexes; ++i) {
index_flags[i] = table->indexes[i].mesg_types;
minsizes[i] = table->indexes[i].min_mesg_size;
}
done:
/* Release the master SOHM table if we took it out of the cache */
if(table && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, table_addr, table, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTRELEASE, FAIL, "unable to close SOHM master table")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_get_info() */
/*-------------------------------------------------------------------------
* Function: H5SM_message_encode
*
* Purpose: Serialize a H5SM_sohm_t struct into a buffer RAW.
*
* Return: Non-negative on success
* Negative on failure
*
* Programmer: James Laird
* Monday, November 6, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_message_encode(const H5F_t UNUSED *f, uint8_t *raw, const void *_nrecord)
{
const H5SM_sohm_t *message = (const H5SM_sohm_t *)_nrecord;
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SM_message_encode)
/* Encode the SOHM's fields */
UINT32ENCODE(raw, message->hash);
UINT32ENCODE(raw, message->ref_count);
UINT64ENCODE(raw, message->fheap_id);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM_message_encode */
/*-------------------------------------------------------------------------
* Function: H5SM_message_decode
*
* Purpose: Read an encoded SOHM message from RAW into an H5SM_sohm_t struct.
*
* Return: Non-negative on success
* Negative on failure
*
* Programmer: James Laird
* Monday, November 6, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_message_decode(const H5F_t UNUSED *f, const uint8_t *raw, void *_nrecord)
{
H5SM_sohm_t *message = (H5SM_sohm_t *)_nrecord;
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SM_message_decode)
/* Encode the SOHM's fields */
UINT32DECODE(raw, message->hash);
UINT32DECODE(raw, message->ref_count);
UINT64DECODE(raw, message->fheap_id);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM_message_decode */
/*-------------------------------------------------------------------------
* Function: H5SM_reconstitute
*
* Purpose: Reconstitute a shared object header message structure from
* a plain heap ID.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Monday, December 18, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_reconstitute(H5O_shared_t *sh_mesg, H5O_fheap_id_t heap_id)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SM_reconstitute)
/* Sanity check args */
HDassert(sh_mesg);
/* Set flag for shared message */
sh_mesg->flags = H5O_SHARED_IN_HEAP_FLAG;
sh_mesg->u.heap_id = heap_id;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM_reconstitute() */
/*-------------------------------------------------------------------------
* Function: H5SM_get_refcount_bt2_cb
*
* Purpose: v2 B-tree 'find' callback to retrieve the record for a message
*
* Return: SUCCEED/FAIL
*
* Programmer: Quincey Koziol
* Tuesday, December 19, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5SM_get_refcount_bt2_cb(const void *_record, void *_op_data)
{
const H5SM_sohm_t *record = (const H5SM_sohm_t *)_record; /* v2 B-tree record for message */
H5SM_sohm_t *op_data = (H5SM_sohm_t *)_op_data; /* "op data" from v2 B-tree find */
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5SM_get_refcount_bt2_cb)
/*
* Check arguments.
*/
HDassert(record);
HDassert(op_data);
/* Make a copy of the record */
*op_data = *record;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5SM_get_refcount_bt2_cb() */
/*-------------------------------------------------------------------------
* Function: H5SM_get_refcount
*
* Purpose: Retrieve the reference count for a message
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, December 19, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_get_refcount(H5F_t *f, hid_t dxpl_id, unsigned type_id,
const H5O_shared_t *sh_mesg, hsize_t *ref_count)
{
H5HF_t *fheap = NULL; /* Fractal heap that contains shared messages */
H5SM_master_table_t *table = NULL; /* SOHM master table */
H5SM_list_t *list = NULL; /* SOHM index list for message type (if in list form) */
H5SM_index_header_t *header=NULL; /* Index header for message type */
H5SM_mesg_key_t key; /* Key for looking up message */
H5SM_fh_ud_gh_t udata; /* User data for fractal heap 'op' callback */
H5SM_sohm_t message; /* Shared message returned from callback */
ssize_t index_num; /* Table index for message type */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5SM_get_refcount)
/* Sanity check */
HDassert(f);
HDassert(sh_mesg);
HDassert(ref_count);
/* Look up the master SOHM table */
if(NULL == (table = (H5SM_master_table_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, NULL, NULL, H5AC_READ)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM master table")
/* Find the correct index and try to delete from it */
if((index_num = H5SM_get_index(table, type_id)) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_NOTFOUND, FAIL, "unable to find correct SOHM index")
header = &(table->indexes[index_num]);
/* Open the heap that this message is in */
if(NULL == (fheap = H5HF_open(f, dxpl_id, header->heap_addr)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTOPENOBJ, FAIL, "unable to open fractal heap")
/* Prepare user data for callback */
udata.type_id = type_id;
/* Compute the hash value for the B-tree lookup */
if(H5HF_op(fheap, dxpl_id, &(sh_mesg->u.heap_id), H5SM_get_hash_fh_cb, &udata) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTGET, FAIL, "can't access message in fractal heap")
/* Set up key for message to locate */
key.message.fheap_id = sh_mesg->u.heap_id;
key.message.hash = udata.hash;
key.message.ref_count = 0; /* Ref count isn't needed to find message */
key.encoding = NULL;
key.encoding_size = 0;
key.fheap = fheap;
/* Try to find the message in the index */
if(header->index_type == H5SM_LIST) {
size_t list_pos; /* Position of the message in the list */
/* If the index is stored as a list, get it from the cache */
if(NULL == (list = (H5SM_list_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, NULL, header, H5AC_READ)))
HGOTO_ERROR(H5E_SOHM, H5E_CANTPROTECT, FAIL, "unable to load SOHM index")
/* Find the message in the list */
if((list_pos = H5SM_find_in_list(list, &key, NULL)) == UFAIL)
HGOTO_ERROR(H5E_SOHM, H5E_NOTFOUND, FAIL, "message not in index")
/* Copy the message */
message = list->messages[list_pos];
} /* end if */
else /* Index is a B-tree */
{
HDassert(header->index_type == H5SM_BTREE);
/* Look up the message in the v2 B-tree */
if(H5B2_find(f, dxpl_id, H5SM_INDEX, header->index_addr, &key, H5SM_get_refcount_bt2_cb, &message) < 0)
HGOTO_ERROR(H5E_SOHM, H5E_NOTFOUND, FAIL, "message not in index")
} /* end else */
/* Set the refcount for the message */
*ref_count = message.ref_count;
done:
/* Release resources */
if(list && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_LIST, header->index_addr, list, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to close SOHM index")
if(table && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, f->shared->sohm_addr, table, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTRELEASE, FAIL, "unable to close SOHM master table")
if(fheap && H5HF_close(fheap, dxpl_id) < 0)
HDONE_ERROR(H5E_HEAP, H5E_CLOSEERROR, FAIL, "can't close fractal heap")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5SM_get_refcount() */
/*-------------------------------------------------------------------------
* Function: H5SM_table_debug
*
* Purpose: Print debugging information for the master table.
*
* If table_vers and num_indexes are not UFAIL, they are used
* instead of the values in the superblock.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Thursday, January 18, 2007
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_table_debug(H5F_t *f, hid_t dxpl_id, haddr_t table_addr,
FILE *stream, int indent, int fwidth,
unsigned table_vers, unsigned num_indexes)
{
H5SM_master_table_t *table = NULL; /* SOHM master table */
unsigned x; /* Counter variable */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5SM_table_debug, FAIL)
HDassert(f);
HDassert(table_addr != HADDR_UNDEF);
HDassert(stream);
HDassert(indent >= 0);
HDassert(fwidth >= 0);
/* If table_vers and num_indexes are UFAIL, replace them with values from
* userblock
*/
if(table_vers == UFAIL)
table_vers = f->shared->sohm_vers;
else if(table_vers != f->shared->sohm_vers)
HDfprintf(stream, "*** SOHM TABLE VERSION DOESN'T MATCH VERSION IN SUPERBLOCK!\n");
if(num_indexes == UFAIL)
num_indexes = f->shared->sohm_nindexes;
else if(num_indexes != f->shared->sohm_nindexes)
HDfprintf(stream, "*** NUMBER OF SOHM INDEXES DOESN'T MATCH VALUE IN SUPERBLOCK!\n");
/* Check arguments. Version must be 0, the only version implemented so far */
if(table_vers > HDF5_SHAREDHEADER_VERSION)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unknown shared message table version")
if(num_indexes == 0 || num_indexes > H5O_SHMESG_MAX_NINDEXES)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "number of indexes must be between 1 and H5O_SHMESG_MAX_NINDEXES")
/* Look up the master SOHM table */
if(NULL == (table = (H5SM_master_table_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_TABLE, table_addr, NULL, NULL, H5AC_READ)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM master table")
HDfprintf(stream, "%*sShared Message Master Table...\n", indent, "");
for(x=0; x<num_indexes; ++x) {
HDfprintf(stream, "%*sIndex %d...\n", indent, "", x);
HDfprintf(stream, "%*s%-*s %s\n", indent + 3, "", fwidth,
"SOHM Index Type:",
(table->indexes[x].index_type == H5SM_LIST ? "List" :
(table->indexes[x].index_type == H5SM_BTREE ? "B-Tree" : "Unknown")));
HDfprintf(stream, "%*s%-*s %a\n", indent + 3, "", fwidth,
"Address of index:", table->indexes[x].index_addr);
HDfprintf(stream, "%*s%-*s %a\n", indent + 3, "", fwidth,
"Address of index's heap:", table->indexes[x].heap_addr);
HDfprintf(stream, "%*s%-*s 0x%08x\n", indent + 3, "", fwidth,
"Message type flags:", table->indexes[x].mesg_types);
HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", fwidth,
"Minimum size of messages:", table->indexes[x].min_mesg_size);
HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", fwidth,
"Number of messages:", table->indexes[x].num_messages);
HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", fwidth,
"Maximum list size:", table->indexes[x].list_max);
HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", fwidth,
"Minimum B-tree size:", table->indexes[x].btree_min);
}
done:
if(table && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_TABLE, table_addr, table, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTRELEASE, FAIL, "unable to close SOHM master table")
FUNC_LEAVE_NOAPI(ret_value)
}
/*-------------------------------------------------------------------------
* Function: H5SM_list_debug
*
* Purpose: Print debugging information for a SOHM list.
*
* Relies on the list version and number of messages passed in.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: James Laird
* Thursday, January 18, 2007
*
*-------------------------------------------------------------------------
*/
herr_t
H5SM_list_debug(H5F_t *f, hid_t dxpl_id, haddr_t list_addr,
FILE *stream, int indent, int fwidth,
unsigned table_vers, size_t num_messages)
{
H5SM_list_t *list = NULL; /* SOHM index list for message type (if in list form) */
H5SM_index_header_t header; /* A "false" header used to read the list */
unsigned x; /* Counter variable */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5SM_list_debug, FAIL)
HDassert(f);
HDassert(list_addr != HADDR_UNDEF);
HDassert(stream);
HDassert(indent >= 0);
HDassert(fwidth >= 0);
/* Check arguments. Version must be 0, the only version implemented so far */
if(table_vers > H5SM_LIST_VERSION)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unknown shared message list version")
if(num_messages == 0 || num_messages > H5O_SHMESG_MAX_LIST_SIZE)
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "number of indexes must be between 1 and H5O_SHMESG_MAX_NINDEXES")
/* Create a temporary header using the arguments. The cache needs this to load the list. */
HDmemset(&header, 0, sizeof(H5SM_index_header_t));
header.list_max = header.num_messages = num_messages;
header.index_type = H5SM_LIST;
header.index_addr = list_addr;
/* Get the list from the cache */
if(NULL == (list = (H5SM_list_t *)H5AC_protect(f, dxpl_id, H5AC_SOHM_LIST, list_addr, NULL, &header, H5AC_READ)))
HGOTO_ERROR(H5E_CACHE, H5E_CANTPROTECT, FAIL, "unable to load SOHM index")
HDfprintf(stream, "%*sShared Message List Index...\n", indent, "");
for(x=0; x<num_messages; ++x) {
HDfprintf(stream, "%*sShared Object Header Message %d...\n", indent, "", x);
HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", fwidth,
"Heap ID:", list->messages[x].fheap_id);
HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", fwidth, /* JAMES: better flag for this? */
"Hash value:", list->messages[x].hash);
HDfprintf(stream, "%*s%-*s %u\n", indent + 3, "", fwidth,
"Reference count:", list->messages[x].ref_count);
}
done:
if(list && H5AC_unprotect(f, dxpl_id, H5AC_SOHM_LIST, list_addr, list, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_CACHE, H5E_CANTUNPROTECT, FAIL, "unable to close SOHM index")
FUNC_LEAVE_NOAPI(ret_value)
}
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