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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: H5Olinfo.c
+ * Aug 23 2005
+ * Quincey Koziol <koziol@ncsa.uiuc.edu>
+ *
+ * Purpose: Link 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_linfo_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p);
+static herr_t H5O_linfo_encode(H5F_t *f, uint8_t *p, const void *_mesg);
+static void *H5O_linfo_copy(const void *_mesg, void *_dest, unsigned update_flags);
+static size_t H5O_linfo_size(const H5F_t *f, const void *_mesg);
+static herr_t H5O_linfo_free(void *_mesg);
+static herr_t H5O_linfo_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_LINFO[1] = {{
+ H5O_LINFO_ID, /*message id number */
+ "linfo", /*message name for debugging */
+ sizeof(H5O_linfo_t), /*native message size */
+ H5O_linfo_decode, /*decode message */
+ H5O_linfo_encode, /*encode message */
+ H5O_linfo_copy, /*copy the native value */
+ H5O_linfo_size, /*size of symbol table entry */
+ NULL, /*default reset method */
+ H5O_linfo_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_linfo_debug /*debug the message */
+}};
+
+/* Current version of link info information */
+#define H5O_LINFO_VERSION 1
+
+/* Declare a free list to manage the hsize_t struct */
+H5FL_DEFINE_STATIC(H5O_linfo_t);
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_linfo_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 23 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_linfo_decode(H5F_t *f, hid_t UNUSED dxpl_id, const uint8_t *p)
+{
+ H5O_linfo_t *linfo = NULL; /* Link info */
+ void *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5O_linfo_decode)
+
+ /* check args */
+ HDassert(f);
+ HDassert(p);
+
+ /* decode */
+ if(*p++ != H5O_LINFO_VERSION)
+ HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "bad version number for message")
+
+ /* Allocate space for message */
+ if (NULL == (linfo = H5FL_MALLOC(H5O_linfo_t)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
+
+ /* Get the number of links in the group */
+ H5F_DECODE_LENGTH(f, p, linfo->nlinks)
+
+ /* Set return value */
+ ret_value = linfo;
+
+done:
+ if(ret_value == NULL)
+ if(linfo != NULL)
+ H5FL_FREE(H5O_linfo_t, linfo);
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_linfo_decode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_linfo_encode
+ *
+ * Purpose: Encodes a message.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Aug 23 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_linfo_encode(H5F_t *f, uint8_t *p, const void *_mesg)
+{
+ const H5O_linfo_t *linfo = (const H5O_linfo_t *) _mesg;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_linfo_encode)
+
+ /* check args */
+ HDassert(f);
+ HDassert(p);
+ HDassert(linfo);
+
+ /* encode */
+ *p++ = H5O_LINFO_VERSION;
+
+ /* Store the number of links in the group */
+ H5F_ENCODE_LENGTH(f, p, linfo->nlinks)
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_linfo_encode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_linfo_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 23 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_linfo_copy(const void *_mesg, void *_dest, unsigned UNUSED update_flags)
+{
+ const H5O_linfo_t *linfo = (const H5O_linfo_t *) _mesg;
+ H5O_linfo_t *dest = (H5O_linfo_t *) _dest;
+ void *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5O_linfo_copy)
+
+ /* check args */
+ HDassert(linfo);
+ if(!dest && NULL == (dest = H5FL_MALLOC(H5O_linfo_t)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
+
+ /* copy */
+ *dest = *linfo;
+
+ /* Set return value */
+ ret_value=dest;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_linfo_copy() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_linfo_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 23 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5O_linfo_size(const H5F_t *f, const void UNUSED *_mesg)
+{
+ size_t ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_linfo_size)
+
+ /* Set return value */
+ ret_value = 1 + /* Version */
+ H5F_SIZEOF_SIZE(f); /* Number of links */
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_linfo_size() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_linfo_free
+ *
+ * Purpose: Free's the message
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, August 23, 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_linfo_free(void *mesg)
+{
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_linfo_free)
+
+ HDassert(mesg);
+
+ H5FL_FREE(H5O_linfo_t, mesg);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_linfo_free() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_linfo_debug
+ *
+ * Purpose: Prints debugging info for a message.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Aug 23 2005
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_linfo_debug(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, const void *_mesg, FILE * stream,
+ int indent, int fwidth)
+{
+ const H5O_linfo_t *linfo = (const H5O_linfo_t *) _mesg;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_linfo_debug)
+
+ /* check args */
+ HDassert(f);
+ HDassert(linfo);
+ HDassert(stream);
+ HDassert(indent >= 0);
+ HDassert(fwidth >= 0);
+
+ HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
+ "Number of links:", linfo->nlinks);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_linfo_debug() */
+