From 5f2e591745df8a05950c07e4c86de00d6678828e Mon Sep 17 00:00:00 2001
From: Quincey Koziol <koziol@hdfgroup.org>
Date: Tue, 24 Mar 2009 15:14:07 -0500
Subject: [svn-r16607] Description: 	Bring r16600:16606 back trom trunk to
 revise_chunks branch.

Tested:
	Mac OS X/32 10.5.6 (amazon)
	Too minor to require h5committest
---
 src/H5AC.c        | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/H5ACprivate.h |   4 +++
 2 files changed, 109 insertions(+)

diff --git a/src/H5AC.c b/src/H5AC.c
index ccdd493..74bed21 100644
--- a/src/H5AC.c
+++ b/src/H5AC.c
@@ -1826,6 +1826,59 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:    H5AC_create_flush_dependency()
+ *
+ * Purpose:	Create a flush dependency between two entries in the metadata
+ *              cache.
+ *
+ * Return:      Non-negative on success/Negative on failure
+ *
+ * Programmer:  Quincey Koziol
+ *              3/24/09
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_create_flush_dependency(H5F_t * f, void * parent_thing, void * child_thing)
+{
+    H5C_t      *cache_ptr = f->shared->cache;
+#if H5AC__TRACE_FILE_ENABLED
+    char        trace[128] = "";
+    FILE *      trace_file_ptr = NULL;
+#endif /* H5AC__TRACE_FILE_ENABLED */
+    herr_t      ret_value = SUCCEED;    /* Return value */
+
+    FUNC_ENTER_NOAPI(H5AC_create_flush_dependency, FAIL)
+
+    /* Sanity check */
+    HDassert(cache_ptr);
+    HDassert(parent_thing);
+    HDassert(child_thing);
+
+#if H5AC__TRACE_FILE_ENABLED
+    if ( ( H5C_get_trace_file_ptr(f->shared->cache, &trace_file_ptr) >= 0 ) &&
+         ( trace_file_ptr != NULL ) ) {
+        sprintf(trace, "%s %lx %lx",
+                FUNC,
+	        (unsigned long)(((H5C_cache_entry_t *)parent_thing)->addr),
+	        (unsigned long)(((H5C_cache_entry_t *)child_thing)->addr));
+    } /* end if */
+#endif /* H5AC__TRACE_FILE_ENABLED */
+
+    if(H5C_create_flush_dependency(cache_ptr, parent_thing, child_thing) < 0)
+        HGOTO_ERROR(H5E_CACHE, H5E_CANTDEPEND, FAIL, "H5C_create_flush_dependency() failed.")
+
+done:
+#if H5AC__TRACE_FILE_ENABLED
+    if(trace_file_ptr != NULL)
+	HDfprintf(trace_file_ptr, "%s %d\n", trace, (int)ret_value);
+#endif /* H5AC__TRACE_FILE_ENABLED */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5AC_create_flush_dependency() */
+
+
+/*-------------------------------------------------------------------------
  * Function:    H5AC_protect
  *
  * Purpose:     If the target entry is not in the cache, load it.  If
@@ -2190,6 +2243,58 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:    H5AC_destroy_flush_dependency()
+ *
+ * Purpose:	Destroy a flush dependency between two entries.
+ *
+ * Return:      Non-negative on success/Negative on failure
+ *
+ * Programmer:  Quincey Koziol
+ *              3/24/09
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5AC_destroy_flush_dependency(H5F_t * f, void * parent_thing, void * child_thing)
+{
+    H5C_t      *cache_ptr = f->shared->cache;
+#if H5AC__TRACE_FILE_ENABLED
+    char                trace[128] = "";
+    FILE *              trace_file_ptr = NULL;
+#endif /* H5AC__TRACE_FILE_ENABLED */
+    herr_t      ret_value = SUCCEED;    /* Return value */
+
+    FUNC_ENTER_NOAPI(H5AC_destroy_flush_dependency, FAIL)
+
+    /* Sanity check */
+    HDassert(cache_ptr);
+    HDassert(parent_thing);
+    HDassert(child_thing);
+
+#if H5AC__TRACE_FILE_ENABLED
+    if ( ( H5C_get_trace_file_ptr(f->shared->cache, &trace_file_ptr) >= 0 ) &&
+         ( trace_file_ptr != NULL ) ) {
+        sprintf(trace, "%s %lx",
+                FUNC,
+	        (unsigned long)(((H5C_cache_entry_t *)parent_thing)->addr),
+	        (unsigned long)(((H5C_cache_entry_t *)child_thing)->addr));
+    } /* end if */
+#endif /* H5AC__TRACE_FILE_ENABLED */
+
+    if(H5C_destroy_flush_dependency(cache_ptr, parent_thing, child_thing) < 0)
+        HGOTO_ERROR(H5E_CACHE, H5E_CANTUNDEPEND, FAIL, "H5C_destroy_flush_dependency() failed.")
+
+done:
+#if H5AC__TRACE_FILE_ENABLED
+    if( trace_file_ptr != NULL )
+	HDfprintf(trace_file_ptr, "%s %d\n", trace, (int)ret_value);
+#endif /* H5AC__TRACE_FILE_ENABLED */
+
+    FUNC_LEAVE_NOAPI(ret_value)
+} /* H5AC_destroy_flush_dependency() */
+
+
+/*-------------------------------------------------------------------------
  * Function:    H5AC_unprotect
  *
  * Purpose:	Undo an H5AC_protect() call -- specifically, mark the
diff --git a/src/H5ACprivate.h b/src/H5ACprivate.h
index 66bdf2d..b8de0c9 100644
--- a/src/H5ACprivate.h
+++ b/src/H5ACprivate.h
@@ -277,6 +277,8 @@ H5_DLL herr_t H5AC_get_entry_status(H5F_t * f, haddr_t addr,
 H5_DLL herr_t H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type,
                        haddr_t addr, void *thing, unsigned int flags);
 H5_DLL herr_t H5AC_pin_protected_entry(H5F_t * f, void *  thing);
+H5_DLL herr_t H5AC_create_flush_dependency(H5F_t *f, void *parent_thing,
+    void *child_thing);
 H5_DLL void * H5AC_protect(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type,
                            haddr_t addr, const void *udata1, void *udata2,
                            H5AC_protect_t rw);
@@ -285,6 +287,8 @@ H5_DLL herr_t H5AC_resize_pinned_entry(H5F_t * f,
                                        size_t  new_size);
 H5_DLL herr_t H5AC_unpin_entry(H5F_t * f,
 		               void *  thing);
+H5_DLL herr_t H5AC_destroy_flush_dependency(H5F_t *f, void *parent_thing,
+    void *child_thing);
 H5_DLL herr_t H5AC_unprotect(H5F_t *f, hid_t dxpl_id,
                              const H5AC_class_t *type, haddr_t addr,
 			     void *thing, unsigned flags);
-- 
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