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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. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*-------------------------------------------------------------------------
+ *
+ * Created: H5Oginfo.c
+ * Aug 23 2005
+ * Quincey Koziol <koziol@ncsa.uiuc.edu>
+ *
+ * Purpose: Group Information messages.
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#define H5O_PACKAGE /*suppress error about including H5Opkg */
+
+#include "H5private.h" /* Generic Functions */
+#include "H5Eprivate.h" /* Error handling */
+#include "H5FLprivate.h" /* Free lists */
+#include "H5Opkg.h" /* Object headers */
+
+
+/* PRIVATE PROTOTYPES */
+static void *H5O_ginfo_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p);
+static herr_t H5O_ginfo_encode(H5F_t *f, uint8_t *p, const void *_mesg);
+static void *H5O_ginfo_copy(const void *_mesg, void *_dest, unsigned update_flags);
+static size_t H5O_ginfo_size(const H5F_t *f, const void *_mesg);
+static herr_t H5O_ginfo_free(void *_mesg);
+static herr_t H5O_ginfo_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg,
+ FILE * stream, int indent, int fwidth);
+
+/* This message derives from H5O */
+const H5O_class_t H5O_GINFO[1] = {{
+ H5O_GINFO_ID, /*message id number */
+ "ginfo", /*message name for debugging */
+ sizeof(H5O_ginfo_t), /*native message size */
+ H5O_ginfo_decode, /*decode message */
+ H5O_ginfo_encode, /*encode message */
+ H5O_ginfo_copy, /*copy the native value */
+ H5O_ginfo_size, /*size of symbol table entry */
+ NULL, /*default reset method */
+ H5O_ginfo_free, /* free method */
+ NULL, /* file delete method */
+ NULL, /* link method */
+ NULL, /*get share method */
+ NULL, /*set share method */
+ NULL, /* copy native value to file */
+ NULL, /* post copy native value to file */
+ H5O_ginfo_debug /*debug the message */
+}};
+
+/* Current version of group info information */
+#define H5O_GINFO_VERSION 1
+
+/* Declare a free list to manage the H5O_ginfo_t struct */
+H5FL_DEFINE_STATIC(H5O_ginfo_t);
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_ginfo_decode
+ *
+ * Purpose: Decode a message and return a pointer to
+ * a newly allocated one.
+ *
+ * Return: Success: Ptr to new message in native order.
+ *
+ * Failure: NULL
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Aug 30 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_ginfo_decode(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, const uint8_t *p)
+{
+ H5O_ginfo_t *ginfo = NULL; /* Pointer to group information message */
+ void *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5O_ginfo_decode)
+
+ /* check args */
+ HDassert(f);
+ HDassert(p);
+
+ /* decode */
+ if(*p++ != H5O_GINFO_VERSION)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "bad version number for message")
+
+ /* Allocate space for message */
+ if(NULL == (ginfo = H5FL_CALLOC(H5O_ginfo_t)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
+
+ /* Get the local heap size hint */
+ UINT32DECODE(p, ginfo->lheap_size_hint)
+
+ /* Get the max. # of links to store compactly & the min. # of links to store densely */
+ UINT32DECODE(p, ginfo->max_compact)
+ UINT32DECODE(p, ginfo->min_dense)
+
+ /* Get the estimated # of entries & name lengths */
+ UINT32DECODE(p, ginfo->est_num_entries)
+ UINT32DECODE(p, ginfo->est_name_len)
+
+ /* Set return value */
+ ret_value=ginfo;
+
+done:
+ if(ret_value == NULL)
+ if(ginfo != NULL)
+ H5FL_FREE(H5O_ginfo_t, ginfo);
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_ginfo_decode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_ginfo_encode
+ *
+ * Purpose: Encodes a message.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Aug 30 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_ginfo_encode(H5F_t UNUSED *f, uint8_t *p, const void *_mesg)
+{
+ const H5O_ginfo_t *ginfo = (const H5O_ginfo_t *) _mesg;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_encode)
+
+ /* check args */
+ HDassert(f);
+ HDassert(p);
+ HDassert(ginfo);
+
+ /* encode */
+ *p++ = H5O_GINFO_VERSION;
+
+ /* Store the local heap size hint for the group */
+ UINT32ENCODE(p, ginfo->lheap_size_hint)
+
+ /* Store the max. # of links to store compactly & the min. # of links to store densely */
+ UINT32ENCODE(p, ginfo->max_compact)
+ UINT32ENCODE(p, ginfo->min_dense)
+
+ /* Store the estimated # of entries & name lengths */
+ UINT32ENCODE(p, ginfo->est_num_entries)
+ UINT32ENCODE(p, ginfo->est_name_len)
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_ginfo_encode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_ginfo_copy
+ *
+ * Purpose: Copies a message from _MESG to _DEST, allocating _DEST if
+ * necessary.
+ *
+ * Return: Success: Ptr to _DEST
+ *
+ * Failure: NULL
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Aug 30 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_ginfo_copy(const void *_mesg, void *_dest, unsigned UNUSED update_flags)
+{
+ const H5O_ginfo_t *ginfo = (const H5O_ginfo_t *) _mesg;
+ H5O_ginfo_t *dest = (H5O_ginfo_t *) _dest;
+ void *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5O_ginfo_copy)
+
+ /* check args */
+ HDassert(ginfo);
+ if(!dest && NULL == (dest = H5FL_MALLOC(H5O_ginfo_t)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
+
+ /* copy */
+ *dest = *ginfo;
+
+ /* Set return value */
+ ret_value=dest;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_ginfo_copy() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_ginfo_size
+ *
+ * Purpose: Returns the size of the raw message in bytes not counting
+ * the message type or size fields, but only the data fields.
+ * This function doesn't take into account alignment.
+ *
+ * Return: Success: Message data size in bytes without alignment.
+ *
+ * Failure: zero
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Aug 30 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5O_ginfo_size(const H5F_t UNUSED *f, const void UNUSED *_mesg)
+{
+ size_t ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_size)
+
+ /* Set return value */
+ ret_value = 1 + /* Version */
+ 4 + /* Local heap size hint */
+ 4 + /* "Max compact" links */
+ 4 + /* "Min dense" links */
+ 4 + /* Estimated # of entries in group */
+ 4; /* Estimated length of name of entry in group */
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_ginfo_size() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_ginfo_free
+ *
+ * Purpose: Free's the message
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, August 30, 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_ginfo_free(void *mesg)
+{
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_free)
+
+ HDassert(mesg);
+
+ H5FL_FREE(H5O_ginfo_t, mesg);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_ginfo_free() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_ginfo_debug
+ *
+ * Purpose: Prints debugging info for a message.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Aug 30 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_ginfo_debug(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, const void *_mesg, FILE * stream,
+ int indent, int fwidth)
+{
+ const H5O_ginfo_t *ginfo = (const H5O_ginfo_t *) _mesg;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_ginfo_debug)
+
+ /* check args */
+ HDassert(f);
+ HDassert(ginfo);
+ HDassert(stream);
+ HDassert(indent >= 0);
+ HDassert(fwidth >= 0);
+
+ HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
+ "Local heap size hint:", ginfo->lheap_size_hint);
+
+ HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
+ "Max. compact links:", ginfo->max_compact);
+
+ HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
+ "Min. dense links:", ginfo->min_dense);
+
+ HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
+ "Estimated # of objects in group:", ginfo->est_num_entries);
+
+ HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
+ "Estimated length of object in group's name:", ginfo->est_name_len);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_ginfo_debug() */
+
+
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