[svn-r12902] Checkin of Shared Object Header Message work.

This feature is still in progress; Shared Object Header Messages are not
complete as a feature and are not thoroughly tested.  There are still
"TODO" comments in the code (comments with the word "JAMES" in them,
so as not to be confused with other TODO comments).

Hopefully this checkin will reduce the liklihood of conflicts as I finish
implementing this feature.

All current tests pass on juniper, copper (parallel), heping, kagiso, and mir.

1 files changed, 107 insertions, 2 deletions

diff --git a/src/H5Opline.c b/src/H5Opline.c
index fefaa78..fae31fb 100644
--- a/src/H5Opline.c
+++ b/src/H5Opline.c
@@ -35,6 +35,11 @@ static void *H5O_pline_copy(const void *_mesg, void *_dest, unsigned update_flag
 static size_t H5O_pline_size(const H5F_t *f, const void *_mesg);
 static herr_t H5O_pline_reset(void *_mesg);
 static herr_t H5O_pline_free(void *_mesg);
+static herr_t H5O_pline_get_share (H5F_t *f, const void *_mesg,
+    H5O_shared_t *sh);
+static herr_t H5O_pline_set_share (H5F_t *f, void *_mesg,
+    const H5O_shared_t *sh);
+static htri_t H5O_pline_is_shared(const void *_mesg);
 static herr_t H5O_pline_pre_copy_file(H5F_t *file_src, const H5O_msg_class_t *type,
     void *mesg_src, hbool_t *deleted, const H5O_copy_t *cpy_info, void *_udata);
 static herr_t H5O_pline_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg,
@@ -53,8 +58,9 @@ const H5O_msg_class_t H5O_MSG_PLINE[1] = {{
     H5O_pline_free,		/* free method			*/
     NULL,		        /* file delete method		*/
     NULL,			/* link method			*/
-    NULL,			/* get share method		*/
-    NULL, 			/* set share method		*/
+    H5O_pline_get_share,	/* get share method		*/
+    H5O_pline_set_share,	/* set share method		*/
+    H5O_pline_is_shared,	/* is shared method		*/
     H5O_pline_pre_copy_file,	/* pre copy native value to file */
     NULL,			/* copy native value to file    */
     NULL,			/* post copy native value to file    */
@@ -591,6 +597,105 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:	H5O_pline_get_share
+ *
+ * Purpose:	Gets sharing information from the message
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	James Laird
+ *              Tuesday, October 10, 2006
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_pline_get_share(H5F_t UNUSED *f, const void *_mesg,
+		     H5O_shared_t *sh /*out*/)
+{
+    H5O_pline_t  *mesg = (H5O_pline_t *)_mesg;
+    herr_t       ret_value = SUCCEED;
+    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_pline_get_share);
+
+    HDassert (mesg);
+    HDassert (sh);
+
+    if(NULL == H5O_copy(H5O_SHARED_ID, &(mesg->sh_loc), sh))
+        ret_value = FAIL;
+
+    FUNC_LEAVE_NOAPI(ret_value);
+}
+
+/*-------------------------------------------------------------------------
+ * Function:	H5O_pline_set_share
+ *
+ * Purpose:	Sets sharing information for the message
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	James Laird
+ *              Tuesday, October 10, 2006
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_pline_set_share(H5F_t UNUSED *f, void *_mesg/*in,out*/,
+		     const H5O_shared_t *sh)
+{
+    H5O_pline_t  *mesg = (H5O_pline_t *)_mesg;
+    herr_t       ret_value = SUCCEED;
+    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_pline_set_share);
+
+    HDassert (mesg);
+    HDassert (sh);
+
+    if(NULL == H5O_copy(H5O_SHARED_ID, sh, &(mesg->sh_loc)))
+        ret_value = FAIL;
+
+    FUNC_LEAVE_NOAPI(ret_value);
+}
+
+/*-------------------------------------------------------------------------
+ * Function:	H5O_pline_is_shared
+ *
+ * Purpose:	Determines if this fill value is shared (committed or a SOHM)
+ *              or not.
+ *
+ * Return:	TRUE if fill value is shared
+ *              FALSE if fill value is not shared
+ *              Negative on failure
+ *
+ * Programmer:	James Laird
+ *		Monday, October 16, 2006
+ *
+ *-------------------------------------------------------------------------
+ */
+static htri_t
+H5O_pline_is_shared(const void *_mesg)
+{
+    H5O_pline_t  *mesg = (H5O_pline_t *)_mesg;
+    htri_t       ret_value;
+    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5O_pline_is_shared)
+
+    HDassert(mesg);
+
+    /* Fill values can't currently be committed, but this should let the
+     * library read a "committed fill value" if we ever create one in
+     * the future.
+     */
+    if(mesg->sh_loc.flags & (H5O_COMMITTED_FLAG | H5O_SHARED_IN_HEAP_FLAG))
+        ret_value = TRUE;
+    else
+        ret_value = FALSE;
+
+    FUNC_LEAVE_NOAPI(ret_value)
+
+} /* end H5O_pline_is_shared */
+
+/*-------------------------------------------------------------------------
  * Function:	H5O_pline_debug
  *
  * Purpose:	Prints debugging information for filter pipeline message MESG