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-rw-r--r--src/H5Oshmesg.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/src/H5Oshmesg.c b/src/H5Oshmesg.c
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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group (THG). *
+ * 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://www.hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
+ * access to either file, you may request a copy from help@hdfgroup.org. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+
+/* Programmer: James Laird <jlaird@hdfgroup.com>
+ * Monday, January 29, 2007
+ *
+ * Purpose: A message holding "implicitly shared object header message"
+ * information in the superblock extension.
+ */
+
+#define H5O_PACKAGE /*suppress error about including H5Opkg */
+
+#include "H5private.h" /* Generic Functions */
+#include "H5Eprivate.h" /* Error handling */
+#include "H5Opkg.h" /* Object headers */
+#include "H5MMprivate.h" /* Memory management */
+#ifdef JAMES
+#include "H5FLprivate.h" /* Free Lists */
+#include "H5Iprivate.h" /* IDs */
+#include "H5Pprivate.h" /* Property lists */
+#endif /* JAMES */
+
+
+static void *H5O_shmesg_decode(H5F_t *f, hid_t dxpl_id, unsigned mesg_flags, const uint8_t *p);
+static herr_t H5O_shmesg_encode(H5F_t *f, hbool_t disable_shared, uint8_t *p, const void *_mesg);
+static void *H5O_shmesg_copy(const void *_mesg, void *_dest);
+static size_t H5O_shmesg_size(const H5F_t *f, hbool_t disable_shared, const void *_mesg);
+static herr_t H5O_shmesg_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg, FILE *stream,
+ int indent, int fwidth);
+
+/* This message derives from H5O message class, for old fill value before version 1.5 */
+const H5O_msg_class_t H5O_MSG_SHMESG[1] = {{
+ H5O_SHMESG_ID, /*message id number */
+ "shared message table", /*message name for debugging */
+ sizeof(H5O_shmesg_table_t), /*native message size */
+ FALSE, /* messages are sharable? */
+ H5O_shmesg_decode, /*decode message */
+ H5O_shmesg_encode, /*encode message */
+ H5O_shmesg_copy, /*copy the native value */
+ H5O_shmesg_size, /*raw message size */
+ NULL, /*free internal memory */
+ NULL, /* free method */
+ NULL, /* file delete method */
+ NULL, /* link method */
+ NULL, /* set share method */
+ NULL, /*can share method */
+ NULL, /* pre copy native value to file */
+ NULL, /* copy native value to file */
+ NULL, /* post copy native value to file */
+ NULL, /* get creation index */
+ NULL, /* set creation index */
+ H5O_shmesg_debug /*debug the message */
+}};
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_shmesg_decode
+ *
+ * Purpose: Decode a shared message table message and return a pointer
+ * to a newly allocated H5O_shmesg_table_t struct.
+ *
+ * Return: Success: Ptr to new message in native struct.
+ * Failure: NULL
+ *
+ * Programmer: James Laird
+ * Jan 29, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_shmesg_decode(H5F_t *f, hid_t UNUSED dxpl_id, unsigned UNUSED mesg_flags,
+ const uint8_t *p)
+{
+ H5O_shmesg_table_t *mesg = NULL;
+ void *ret_value = NULL;
+
+ FUNC_ENTER_NOAPI_NOINIT(H5O_shmesg_decode)
+
+ HDassert(f);
+ HDassert(p);
+
+ if(NULL == (mesg = H5MM_calloc(sizeof(H5O_shmesg_table_t))))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for shared message table message")
+
+ /* Read version, table address, and number of indexes */
+ mesg->version = *p++;
+ H5F_addr_decode(f, &p, &(mesg->addr));
+ mesg->nindexes = *p++;
+
+ /* Set return value */
+ ret_value = (void*)mesg;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_shmesg_decode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_shmesg_encode
+ *
+ * Purpose: Encode a shared message table message and return a pointer
+ * to a newly allocated H5O_shmesg_table_t struct.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: James Laird
+ * Jan 29, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_shmesg_encode(H5F_t *f, hbool_t UNUSED disable_shared, uint8_t *p, const void *_mesg)
+{
+ const H5O_shmesg_table_t *mesg = (const H5O_shmesg_table_t *)_mesg;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_shmesg_encode)
+
+ HDassert(f);
+ HDassert(p);
+ HDassert(mesg);
+
+ /* Read version, table address, and number of indexes */
+ *p++ = mesg->version;
+ H5F_addr_encode(f, &p, mesg->addr);
+ *p++ = mesg->nindexes;
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_shmesg_encode() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_shmesg_copy
+ *
+ * Purpose: Copies a message from _MESG to _DEST, allocating _DEST if
+ * necessary.
+ *
+ * Return: Success: Ptr to _DEST
+ * Failure: NULL
+ *
+ * Programmer: James Laird
+ * Jan 29, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_shmesg_copy(const void *_mesg, void *_dest)
+{
+ const H5O_shmesg_table_t *mesg = (const H5O_shmesg_table_t *)_mesg;
+ H5O_shmesg_table_t *dest = (H5O_shmesg_table_t *)_dest;
+ void *ret_value = NULL;
+
+ FUNC_ENTER_NOAPI_NOINIT(H5O_shmesg_copy)
+
+ HDassert(mesg);
+
+ if(!dest && NULL == (dest = H5MM_malloc(sizeof(H5O_shmesg_table_t))))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for shared message table message")
+
+ /* All this message requires is a shallow copy */
+ *dest = *mesg;
+
+ /* Set return value */
+ ret_value = dest;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_shmesg_copy() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_shmesg_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. The new fill
+ * value message is fill value plus space allocation time and
+ * fill value writing time and whether fill value is defined.
+ *
+ * Return: Success: Message data size in bytes w/o alignment.
+ * Failure: 0
+ *
+ * Programmer: James Laird
+ * Jan 29, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5O_shmesg_size(const H5F_t *f, hbool_t UNUSED disable_shared, const void *_mesg)
+{
+ const H5O_shmesg_table_t *mesg = (const H5O_shmesg_table_t *)_mesg;
+ size_t ret_value;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_shmesg_size)
+
+ HDassert(f);
+ HDassert(mesg);
+
+ ret_value = 1 + /* Version number */
+ H5F_SIZEOF_ADDR(f) + /* Table address */
+ 1; /* Number of indexes */
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5O_shmesg_size() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_shmesg_debug
+ *
+ * Purpose: Prints debugging info for the message.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: James Laird
+ * Jan 29, 2007
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_shmesg_debug(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, const void *_mesg, FILE *stream,
+ int indent, int fwidth)
+{
+ const H5O_shmesg_table_t *mesg = (const H5O_shmesg_table_t *)_mesg;
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_shmesg_debug)
+
+ HDassert(f);
+ HDassert(mesg);
+ HDassert(stream);
+ HDassert(indent >= 0);
+ HDassert(fwidth >= 0);
+
+ HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
+ "Version:", mesg->version);
+ HDfprintf(stream, "%*s%-*s %a (rel)\n", indent, "", fwidth,
+ "Shared message table address:", mesg->addr);
+ HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
+ "Number of indexes:", mesg->nindexes);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5O_shmesg_debug() */
+
+
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