[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/H5Ofphdf5.c b/src/H5Ofphdf5.c
index 23c6351..88802ab 100644
--- a/src/H5Ofphdf5.c
+++ b/src/H5Ofphdf5.c
@@ -37,13 +37,13 @@
 #define PABLO_MASK  H5O_fphdf5_mask
 
 /* local prototypes */
-static void     *H5O_fphdf5_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh);
+static void     *H5O_fphdf5_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t *sh);
 static herr_t    H5O_fphdf5_encode(H5F_t *f, uint8_t *p, const void *_mesg);
 static size_t    H5O_fphdf5_size(H5F_t *f, const void *_mesg);
 static herr_t    H5O_fphdf5_reset(void *_mesg);
 static void     *H5O_fphdf5_copy(const void *mesg, void *dest);
 static herr_t    H5O_fphdf5_free(void *_mesg);
-static herr_t    H5O_fphdf5_debug(H5F_t *f, const void *_mesg,
+static herr_t    H5O_fphdf5_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg,
                                   FILE *stream, int indent, int fwidth);
 
 /* This message derives from H5O */
@@ -94,7 +94,7 @@ H5FL_ARR_EXTERN(hsize_t);
  * Modifications:
  */
 static void *
-H5O_fphdf5_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh)
+H5O_fphdf5_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t UNUSED *sh)
 {
     H5O_fphdf5_t *fmeta = NULL; /* New FPHDF5 metadata structure */
     void *ret_value;
@@ -511,7 +511,7 @@ done:
  * Modifications:
  */
 static herr_t
-H5O_fphdf5_debug(H5F_t UNUSED *f, const void *mesg,
+H5O_fphdf5_debug(H5F_t UNUSED *f, hid_t dxpl_id, const void *mesg,
                  FILE * stream, int indent, int fwidth)
 {
     const H5O_fphdf5_t *fmeta = (const H5O_fphdf5_t *) mesg;