[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/H5Osdspace.c b/src/H5Osdspace.c
index 2be7b2d..ada1850 100644
--- a/src/H5Osdspace.c
+++ b/src/H5Osdspace.c
@@ -25,13 +25,13 @@
 #define PABLO_MASK	H5O_sdspace_mask
 
 /* PRIVATE PROTOTYPES */
-static void *H5O_sdspace_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh);
+static void *H5O_sdspace_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t *sh);
 static herr_t H5O_sdspace_encode(H5F_t *f, uint8_t *p, const void *_mesg);
 static void *H5O_sdspace_copy(const void *_mesg, void *_dest);
 static size_t H5O_sdspace_size(H5F_t *f, const void *_mesg);
 static herr_t H5O_sdspace_reset(void *_mesg);
 static herr_t H5O_sdspace_free (void *_mesg);
-static herr_t H5O_sdspace_debug(H5F_t *f, const void *_mesg,
+static herr_t H5O_sdspace_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg,
 				FILE * stream, int indent, int fwidth);
 
 /* This message derives from H5O */
@@ -90,7 +90,7 @@ H5FL_ARR_EXTERN(hsize_t);
         Added a version number and reformatted the message for aligment.
 --------------------------------------------------------------------------*/
 static void *
-H5O_sdspace_decode(H5F_t *f, const uint8_t *p, H5O_shared_t UNUSED *sh)
+H5O_sdspace_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *p, H5O_shared_t UNUSED *sh)
 {
     H5S_simple_t	*sdim = NULL;/* New simple dimensionality structure */
     void		*ret_value;
@@ -414,7 +414,7 @@ done:
     parameter.
 --------------------------------------------------------------------------*/
 static herr_t
-H5O_sdspace_debug(H5F_t UNUSED *f, const void *mesg,
+H5O_sdspace_debug(H5F_t UNUSED *f, hid_t dxpl_id, const void *mesg,
 		  FILE * stream, int indent, int fwidth)
 {
     const H5S_simple_t	   *sdim = (const H5S_simple_t *) mesg;