[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, 4 insertions, 4 deletions

diff --git a/src/H5Oplist.c b/src/H5Oplist.c
index 8f5fc39..7c36136 100644
--- a/src/H5Oplist.c
+++ b/src/H5Oplist.c
@@ -33,11 +33,11 @@
 #define PABLO_MASK  H5O_plist_mask
 
 /* local prototypes */
-static void     *H5O_plist_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh);
+static void     *H5O_plist_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t *sh);
 static herr_t    H5O_plist_encode(H5F_t *f, uint8_t *p, const void *_mesg);
 static size_t    H5O_plist_size(H5F_t *f, const void *_mesg);
 static herr_t    H5O_plist_free(void *_mesg);
-static herr_t    H5O_plist_debug(H5F_t *f, const void *_mesg,
+static herr_t    H5O_plist_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg,
                                  FILE *stream, int indent, int fwidth);
 
 /* This message derives from H5O */
@@ -131,7 +131,7 @@ H5FL_EXTERN(H5P_genplist_t);
  * Modifications:
  */
 static void *
-H5O_plist_decode(H5F_t UNUSED *f, const uint8_t *p, H5O_shared_t UNUSED *sh)
+H5O_plist_decode(H5F_t UNUSED *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t UNUSED *sh)
 {
     H5P_genplist_t *new_plist = NULL;
     H5P_genclass_t *pclass; /* property list class to modify        */
@@ -483,7 +483,7 @@ done:
  * Modifications:
  */
 static herr_t
-H5O_plist_debug(H5F_t UNUSED *f, const void *mesg, FILE *stream,
+H5O_plist_debug(H5F_t UNUSED *f, hid_t dxpl_id, const void *mesg, FILE *stream,
                 int indent, int fwidth)
 {
     const H5P_genplist_t *plist = (const H5P_genplist_t *)mesg;