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-rw-r--r--src/H5Olayout.c276
1 files changed, 276 insertions, 0 deletions
diff --git a/src/H5Olayout.c b/src/H5Olayout.c
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--- /dev/null
+++ b/src/H5Olayout.c
@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 1997 NCSA
+ * All rights reserved.
+ *
+ * Programmer: Robb Matzke <matzke@llnl.gov>
+ * Wednesday, October 8, 1997
+ *
+ * Purpose: Messages related to data layout.
+ */
+#include <H5private.h>
+#include <H5Dprivate.h>
+#include <H5Eprivate.h>
+#include <H5MMprivate.h>
+#include <H5Oprivate.h>
+
+/* PRIVATE PROTOTYPES */
+static void *H5O_layout_decode (H5F_t *f, size_t raw_size, const uint8 *p);
+static herr_t H5O_layout_encode (H5F_t *f, size_t size, uint8 *p,
+ const void *_mesg);
+static void *H5O_layout_copy (const void *_mesg, void *_dest);
+static size_t H5O_layout_size (H5F_t *f, const void *_mesg);
+static herr_t H5O_layout_debug (H5F_t *f, const void *_mesg, FILE *stream,
+ intn indent, intn fwidth);
+
+/* This message derives from H5O */
+const H5O_class_t H5O_LAYOUT[1] = {{
+ H5O_LAYOUT_ID, /*message id number */
+ "layout", /*message name for debugging */
+ sizeof(H5O_layout_t), /*native message size */
+ H5O_layout_decode, /*decode message */
+ H5O_layout_encode, /*encode message */
+ H5O_layout_copy, /*copy the native value */
+ H5O_layout_size, /*size of message on disk */
+ NULL, /*reset method */
+ H5O_layout_debug, /*debug the message */
+}};
+
+/* Interface initialization */
+#define PABLO_MASK H5O_layout_mask
+static hbool_t interface_initialize_g = FALSE;
+#define INTERFACE_INIT NULL
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_layout_decode
+ *
+ * Purpose: Decode an data layout message and return a pointer to a
+ * new one created with malloc().
+ *
+ * Return: Success: Ptr to new message in native order.
+ *
+ * Failure: NULL
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, October 8, 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_layout_decode (H5F_t *f, size_t raw_size, const uint8 *p)
+{
+ H5O_layout_t *mesg = NULL;
+ intn i;
+
+ FUNC_ENTER (H5O_layout_decode, NULL);
+
+ /* check args */
+ assert (f);
+ assert (p);
+
+ /* decode */
+ mesg = H5MM_xcalloc (1, sizeof(H5O_layout_t));
+ H5F_addr_decode (f, &p, &(mesg->addr));
+ mesg->ndims = *p++;
+ assert (raw_size == H5O_layout_size (f, mesg));
+
+ /* Layout class */
+ mesg->type = *p++;
+ assert (H5D_CONTIGUOUS==mesg->type || H5D_CHUNKED==mesg->type);
+
+ /* Reserved bytes */
+ p += 6;
+
+ /* Read the size */
+ for (i=0; i<mesg->ndims; i++) {
+ UINT32DECODE (p, mesg->dim[i]);
+ }
+
+ FUNC_LEAVE (mesg);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_layout_encode
+ *
+ * Purpose: Encodes a message.
+ *
+ * Return: Success: SUCCEED
+ *
+ * Failure: FAIL
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, October 8, 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_layout_encode (H5F_t *f, size_t raw_size, uint8 *p, const void *_mesg)
+{
+ const H5O_layout_t *mesg = (const H5O_layout_t *)_mesg;
+ int i;
+
+ FUNC_ENTER (H5O_layout_encode, FAIL);
+
+ /* check args */
+ assert (f);
+ assert (mesg);
+ assert (mesg->ndims>0 && mesg->ndims<=H5O_LAYOUT_NDIMS);
+ assert (raw_size == H5O_layout_size (f, _mesg));
+ assert (p);
+
+ /* data or B-tree address */
+ H5F_addr_encode (f, &p, &(mesg->addr));
+
+ /* number of dimensions */
+ *p++ = mesg->ndims;
+
+ /* layout class */
+ *p++ = mesg->type;
+
+ /* reserved bytes should be zero */
+ for (i=0; i<6; i++) *p++ = 0;
+
+ /* dimension size */
+ for (i=0; i<mesg->ndims; i++) {
+ UINT32ENCODE (p, mesg->dim[i]);
+ }
+
+ FUNC_LEAVE (SUCCEED);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_layout_copy
+ *
+ * Purpose: Copies a message from _MESG to _DEST, allocating _DEST if
+ * necessary.
+ *
+ * Return: Success: Ptr to _DEST
+ *
+ * Failure: NULL
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, October 8, 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void *
+H5O_layout_copy (const void *_mesg, void *_dest)
+{
+ const H5O_layout_t *mesg = (const H5O_layout_t *)_mesg;
+ H5O_layout_t *dest = (H5O_layout_t *)_dest;
+
+ FUNC_ENTER (H5O_layout_copy, NULL);
+
+ /* check args */
+ assert (mesg);
+ if (!dest) dest = H5MM_xcalloc (1, sizeof(H5O_layout_t));
+
+ /* copy */
+ *dest = *mesg;
+
+ FUNC_LEAVE ((void*)dest);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_layout_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 message alignment.
+ *
+ * Return: Success: Message data size in bytes
+ *
+ * Failure: FAIL
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, October 8, 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5O_layout_size (H5F_t *f, const void *_mesg)
+{
+ const H5O_layout_t *mesg = (const H5O_layout_t *)_mesg;
+ size_t ret_value = FAIL;
+
+ FUNC_ENTER (H5O_layout_size, FAIL);
+
+ /* check args */
+ assert (f);
+ assert (mesg);
+ assert (mesg->ndims>0 && mesg->ndims<=H5O_LAYOUT_NDIMS);
+
+ ret_value = H5F_SIZEOF_ADDR (f) + /* B-tree address */
+ 1 + /* max dimension index */
+ 1 + /* layout class number */
+ 6 + /* reserved bytes */
+ mesg->ndims * 4; /* alignment */
+
+ FUNC_LEAVE (ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5O_layout_debug
+ *
+ * Purpose: Prints debugging info for a message.
+ *
+ * Return: Success: SUCCEED
+ *
+ * Failure: FAIL
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, October 8, 1997
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_layout_debug (H5F_t *f, const void *_mesg, FILE *stream, intn indent,
+ intn fwidth)
+{
+ const H5O_layout_t *mesg = (const H5O_layout_t *)_mesg;
+ intn i;
+
+ FUNC_ENTER (H5O_layout_debug, FAIL);
+
+ /* check args */
+ assert (f);
+ assert (mesg);
+ assert (stream);
+ assert (indent>=0);
+ assert (fwidth>=0);
+
+ fprintf (stream, "%*s%-*s ", indent, "", fwidth,
+ H5D_CHUNKED==mesg->type?"B-tree address:":"Data address:");
+ H5F_addr_print (stream, &(mesg->addr));
+ fprintf (stream, "\n");
+
+ fprintf (stream, "%*s%-*s %lu\n", indent, "", fwidth,
+ "Number of dimensions:",
+ (unsigned long)(mesg->ndims));
+
+ /* Size */
+ fprintf (stream, "%*s%-*s {", indent, "", fwidth,
+ "Size:");
+ for (i=0; i<mesg->ndims; i++) {
+ fprintf (stream, "%s%lu", i?", ":"",
+ (unsigned long)(mesg->dim[i]));
+ }
+ fprintf (stream, "}\n");
+
+ FUNC_LEAVE (SUCCEED);
+}
+
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