[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, 7 insertions, 7 deletions

diff --git a/src/H5FDpublic.h b/src/H5FDpublic.h
index 3cf1c94..a04efc1 100644
--- a/src/H5FDpublic.h
+++ b/src/H5FDpublic.h
@@ -140,8 +140,8 @@ typedef struct H5FD_class_t {
     herr_t (*close)(H5FD_t *file);
     int (*cmp)(const H5FD_t *f1, const H5FD_t *f2);
     herr_t (*query)(const H5FD_t *f1, unsigned long *flags);
-    haddr_t (*alloc)(H5FD_t *file, H5FD_mem_t type, hsize_t size);
-    herr_t (*free)(H5FD_t *file, H5FD_mem_t type, haddr_t addr, hsize_t size);
+    haddr_t (*alloc)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, hsize_t size);
+    herr_t (*free)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t size);
     haddr_t (*get_eoa)(H5FD_t *file);
     herr_t (*set_eoa)(H5FD_t *file, haddr_t addr);
     haddr_t (*get_eof)(H5FD_t *file);
@@ -150,7 +150,7 @@ typedef struct H5FD_class_t {
 		   void *buffer);
     herr_t (*write)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl, haddr_t addr, size_t size,
 		    const void *buffer);
-    herr_t (*flush)(H5FD_t *file, unsigned closing);
+    herr_t (*flush)(H5FD_t *file, hid_t dxpl_id, unsigned closing);
     H5FD_mem_t fl_map[H5FD_MEM_NTYPES];
 } H5FD_class_t;
 
@@ -211,9 +211,9 @@ H5_DLL H5FD_t *H5FDopen(const char *name, unsigned flags, hid_t fapl_id,
 H5_DLL herr_t H5FDclose(H5FD_t *file);
 H5_DLL int H5FDcmp(const H5FD_t *f1, const H5FD_t *f2);
 H5_DLL int H5FDquery(const H5FD_t *f, unsigned long *flags);
-H5_DLL haddr_t H5FDalloc(H5FD_t *file, H5FD_mem_t type, hsize_t size);
-H5_DLL herr_t H5FDfree(H5FD_t *file, H5FD_mem_t type, haddr_t addr, hsize_t size);
-H5_DLL haddr_t H5FDrealloc(H5FD_t *file, H5FD_mem_t type, haddr_t addr,
+H5_DLL haddr_t H5FDalloc(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, hsize_t size);
+H5_DLL herr_t H5FDfree(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, hsize_t size);
+H5_DLL haddr_t H5FDrealloc(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr,
 		    hsize_t old_size, hsize_t new_size);
 H5_DLL haddr_t H5FDget_eoa(H5FD_t *file);
 H5_DLL herr_t H5FDset_eoa(H5FD_t *file, haddr_t eof);
@@ -223,7 +223,7 @@ H5_DLL herr_t H5FDread(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t add
 		void *buf/*out*/);
 H5_DLL herr_t H5FDwrite(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
 		 const void *buf);
-H5_DLL herr_t H5FDflush(H5FD_t *file, unsigned closing);
+H5_DLL herr_t H5FDflush(H5FD_t *file, hid_t dxpl_id, unsigned closing);
 
 #ifdef __cplusplus
 }