[svn-r6387] Purpose:

    Bug Fix

Description:
    Metadata cache in parallel I/O can cause hangs in applications which
    perform independent I/O on chunked datasets, because the metadata cache
    can attempt to flush out dirty metadata from only a single process, instead
    of collectively from all processes.

Solution:
    Pass a dataset transfer property list down from every API function which
    could possibly trigger metadata I/O.

    Then, split the metadata cache into two sets of entries to allow dirty
    metadata to be set aside when a hash table collision occurs during
    independent I/O.

Platforms tested:
    Tested h5committest {arabica (fortran), eirene (fortran, C++)
        modi4 (parallel, fortran)}

    FreeBSD 4.7 (sleipnir) serial & parallel

Misc. update:
    Updated release_docs/RELEASE

1 files changed, 6 insertions, 6 deletions

diff --git a/src/H5Oefl.c b/src/H5Oefl.c
index 38b2dfb..67202f3 100644
--- a/src/H5Oefl.c
+++ b/src/H5Oefl.c
@@ -17,12 +17,12 @@
 #define PABLO_MASK	H5O_efl_mask
 
 /* PRIVATE PROTOTYPES */
-static void *H5O_efl_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh);
+static void *H5O_efl_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t *sh);
 static herr_t H5O_efl_encode(H5F_t *f, uint8_t *p, const void *_mesg);
 static void *H5O_efl_copy(const void *_mesg, void *_dest);
 static size_t H5O_efl_size(H5F_t *f, const void *_mesg);
 static herr_t H5O_efl_reset(void *_mesg);
-static herr_t H5O_efl_debug(H5F_t *f, const void *_mesg, FILE * stream,
+static herr_t H5O_efl_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg, FILE * stream,
 			    int indent, int fwidth);
 
 /* This message derives from H5O */
@@ -68,7 +68,7 @@ static int interface_initialize_g = 0;
  *-------------------------------------------------------------------------
  */
 static void *
-H5O_efl_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh)
+H5O_efl_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t UNUSED *sh)
 {
     H5O_efl_t		*mesg = NULL;
     int		i, version;
@@ -103,7 +103,7 @@ H5O_efl_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh)
     H5F_addr_decode(f, &p, &(mesg->heap_addr));
 #ifndef NDEBUG
     assert (H5F_addr_defined(mesg->heap_addr));
-    s = H5HL_peek (f, mesg->heap_addr, 0);
+    s = H5HL_peek (f, dxpl_id, mesg->heap_addr, 0);
     assert (s && !*s);
 #endif
 
@@ -114,7 +114,7 @@ H5O_efl_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh)
     for (i=0; i<mesg->nused; i++) {
 	/* Name */
 	H5F_DECODE_LENGTH (f, p, mesg->slot[i].name_offset);
-	s = H5HL_peek(f, mesg->heap_addr, mesg->slot[i].name_offset);
+	s = H5HL_peek(f, dxpl_id, mesg->heap_addr, mesg->slot[i].name_offset);
 	assert (s && *s);
 	mesg->slot[i].name = H5MM_xstrdup (s);
 	
@@ -582,7 +582,7 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5O_efl_debug(H5F_t UNUSED *f, const void *_mesg, FILE * stream,
+H5O_efl_debug(H5F_t UNUSED *f, hid_t dxpl_id, const void *_mesg, FILE * stream,
 	      int indent, int fwidth)
 {
     const H5O_efl_t	   *mesg = (const H5O_efl_t *) _mesg;