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/*
* Copyright (C) 1997 National Center for Supercomputing Applications.
* All rights reserved.
*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Friday, September 19, 1997
*/
#define H5G_PACKAGE
#define H5F_PACKAGE /*suppress error about including H5Fpkg */
#include "H5private.h"
#include "H5Eprivate.h"
#include "H5Fpkg.h"
#include "H5Gpkg.h"
#include "H5HLprivate.h"
#include "H5MMprivate.h"
#define PABLO_MASK H5G_ent_mask
static int interface_initialize_g = 0;
#define INTERFACE_INIT NULL
/*-------------------------------------------------------------------------
* Function: H5G_ent_cache
*
* Purpose: Returns a pointer to the cache associated with the symbol
* table entry. You should modify the cache directly, then call
* H5G_modified() with the new cache type (even if the type is
* still the same).
*
* Return: Success: Ptr to the cache in the symbol table entry.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Friday, September 19, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
H5G_cache_t *
H5G_ent_cache(H5G_entry_t *ent, H5G_type_t *cache_type)
{
FUNC_ENTER(H5G_ent_cache, NULL);
if (!ent) {
HRETURN_ERROR(H5E_SYM, H5E_BADVALUE, NULL, "no entry");
}
if (cache_type)
*cache_type = ent->type;
FUNC_LEAVE(&(ent->cache));
}
/*-------------------------------------------------------------------------
* Function: H5G_ent_modified
*
* Purpose: This function should be called after you make any
* modifications to a symbol table entry cache. Supply the new
* type for the cache. If CACHE_TYPE is the constant
* H5G_NO_CHANGE then the cache type isn't changed--just the
* dirty bit is set.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* Friday, September 19, 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_ent_modified(H5G_entry_t *ent, H5G_type_t cache_type)
{
FUNC_ENTER(H5G_ent_modified, FAIL);
assert(ent);
if (H5G_NO_CHANGE != ent->type) ent->type = cache_type;
ent->dirty = TRUE;
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_ent_decode_vec
*
* Purpose: Same as H5G_ent_decode() except it does it for an array of
* symbol table entries.
*
* Errors:
* SYM CANTDECODE Can't decode.
*
* Return: Success: Non-negative, with *pp pointing to the first byte
* after the last symbol.
*
* Failure: Negative
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Jul 18 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_ent_decode_vec(H5F_t *f, const uint8_t **pp, H5G_entry_t *ent, int n)
{
int i;
FUNC_ENTER(H5G_ent_decode_vec, FAIL);
/* check arguments */
assert(f);
assert(pp);
assert(ent);
assert(n >= 0);
/* decode entries */
for (i = 0; i < n; i++) {
if (H5G_ent_decode(f, pp, ent + i) < 0) {
HRETURN_ERROR(H5E_SYM, H5E_CANTDECODE, FAIL, "can't decode");
}
}
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_ent_decode
*
* Purpose: Decodes a symbol table entry pointed to by `*pp'.
*
* Errors:
*
* Return: Success: Non-negative with *pp pointing to the first byte
* following the symbol table entry.
*
* Failure: Negative
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Jul 18 1997
*
* Modifications:
* Robb Matzke, 17 Jul 1998
* Added a 4-byte padding field for alignment and future expansion.
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_ent_decode(H5F_t *f, const uint8_t **pp, H5G_entry_t *ent)
{
const uint8_t *p_ret = *pp;
uint32_t tmp;
FUNC_ENTER(H5G_ent_decode, FAIL);
/* check arguments */
assert(f);
assert(pp);
assert(ent);
ent->file = f;
/* decode header */
H5F_DECODE_LENGTH(f, *pp, ent->name_off);
H5F_addr_decode(f, pp, &(ent->header));
UINT32DECODE(*pp, tmp);
*pp += 4; /*reserved*/
ent->type=(H5G_type_t)tmp;
/* decode scratch-pad */
switch (ent->type) {
case H5G_NOTHING_CACHED:
break;
case H5G_CACHED_STAB:
assert(2 * H5F_SIZEOF_ADDR(f) <= H5G_SIZEOF_SCRATCH);
H5F_addr_decode(f, pp, &(ent->cache.stab.btree_addr));
H5F_addr_decode(f, pp, &(ent->cache.stab.heap_addr));
break;
case H5G_CACHED_SLINK:
UINT32DECODE (*pp, ent->cache.slink.lval_offset);
break;
default:
HDabort();
}
*pp = p_ret + H5G_SIZEOF_ENTRY(f);
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_ent_encode_vec
*
* Purpose: Same as H5G_ent_encode() except it does it for an array of
* symbol table entries.
*
* Errors:
* SYM CANTENCODE Can't encode.
*
* Return: Success: Non-negative, with *pp pointing to the first byte
* after the last symbol.
*
* Failure: Negative
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Jul 18 1997
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_ent_encode_vec(H5F_t *f, uint8_t **pp, const H5G_entry_t *ent, int n)
{
int i;
FUNC_ENTER(H5G_ent_encode_vec, FAIL);
/* check arguments */
assert(f);
assert(pp);
assert(ent);
assert(n >= 0);
/* encode entries */
for (i = 0; i < n; i++) {
if (H5G_ent_encode(f, pp, ent + i) < 0) {
HRETURN_ERROR(H5E_SYM, H5E_CANTENCODE, FAIL, "can't encode");
}
}
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_ent_encode
*
* Purpose: Encodes the specified symbol table entry into the buffer
* pointed to by *pp.
*
* Errors:
*
* Return: Success: Non-negative, with *pp pointing to the first byte
* after the symbol table entry.
*
* Failure: Negative
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Jul 18 1997
*
* Modifications:
*
* Robb Matzke, 8 Aug 1997
* Writes zeros for the bytes that aren't used so the file doesn't
* contain junk.
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_ent_encode(H5F_t *f, uint8_t **pp, const H5G_entry_t *ent)
{
uint8_t *p_ret = *pp + H5G_SIZEOF_ENTRY(f);
FUNC_ENTER(H5G_ent_encode, FAIL);
/* check arguments */
assert(f);
assert(pp);
if (ent) {
/* encode header */
H5F_ENCODE_LENGTH(f, *pp, ent->name_off);
H5F_addr_encode(f, pp, ent->header);
UINT32ENCODE(*pp, ent->type);
UINT32ENCODE(*pp, 0); /*reserved*/
/* encode scratch-pad */
switch (ent->type) {
case H5G_NOTHING_CACHED:
break;
case H5G_CACHED_STAB:
assert(2 * H5F_SIZEOF_ADDR(f) <= H5G_SIZEOF_SCRATCH);
H5F_addr_encode(f, pp, ent->cache.stab.btree_addr);
H5F_addr_encode(f, pp, ent->cache.stab.heap_addr);
break;
case H5G_CACHED_SLINK:
UINT32ENCODE (*pp, ent->cache.slink.lval_offset);
break;
default:
HDabort();
}
} else {
H5F_ENCODE_LENGTH(f, *pp, 0);
H5F_addr_encode(f, pp, HADDR_UNDEF);
UINT32ENCODE(*pp, H5G_NOTHING_CACHED);
UINT32ENCODE(*pp, 0); /*reserved*/
}
/* fill with zero */
while (*pp < p_ret) *(*pp)++ = 0;
*pp = p_ret;
FUNC_LEAVE(SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5G_ent_debug
*
* Purpose: Prints debugging information about a symbol table entry.
*
* Errors:
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Robb Matzke
* matzke@llnl.gov
* Aug 29 1997
*
* Modifications:
* Robb Matzke, 1999-07-28
* The HEAP argument is passed by value.
*-------------------------------------------------------------------------
*/
herr_t
H5G_ent_debug(H5F_t UNUSED *f, const H5G_entry_t *ent, FILE * stream,
int indent, int fwidth, haddr_t heap)
{
const char *lval = NULL;
FUNC_ENTER(H5G_ent_debug, FAIL);
HDfprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Name offset into private heap:",
(unsigned long) (ent->name_off));
HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
"Object header address:", ent->header);
HDfprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
"Dirty:",
ent->dirty ? "Yes" : "No");
HDfprintf(stream, "%*s%-*s ", indent, "", fwidth,
"Symbol type:");
switch (ent->type) {
case H5G_NOTHING_CACHED:
HDfprintf(stream, "Nothing Cached\n");
break;
case H5G_CACHED_STAB:
HDfprintf(stream, "Symbol Table\n");
HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
"B-tree address:", ent->cache.stab.btree_addr);
HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
"Heap address:", ent->cache.stab.heap_addr);
break;
case H5G_CACHED_SLINK:
HDfprintf (stream, "Symbolic Link\n");
HDfprintf (stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Link value offset:",
(unsigned long)(ent->cache.slink.lval_offset));
if (H5F_addr_defined(heap)) {
lval = H5HL_peek (ent->file, heap, ent->cache.slink.lval_offset);
HDfprintf (stream, "%*s%-*s %s\n", indent, "", fwidth,
"Link value:",
lval);
}
break;
default:
HDfprintf(stream, "*** Unknown symbol type %d\n", ent->type);
break;
}
FUNC_LEAVE(SUCCEED);
}
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