[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, 8 insertions, 8 deletions

diff --git a/src/H5Tpkg.h b/src/H5Tpkg.h
index c3a9703..5b4cf09 100644
--- a/src/H5Tpkg.h
+++ b/src/H5Tpkg.h
@@ -91,8 +91,8 @@ typedef struct H5T_enum_t {
 
 /* VL function pointers */
 typedef hssize_t (*H5T_vlen_getlenfunc_t)(H5F_t *f, void *vl_addr);
-typedef herr_t (*H5T_vlen_readfunc_t)(H5F_t *f, void *vl_addr, void *buf, size_t len);
-typedef herr_t (*H5T_vlen_writefunc_t)(hid_t dxpl_id, H5F_t *f, void *vl_addr, void *buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
+typedef herr_t (*H5T_vlen_readfunc_t)(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *buf, size_t len);
+typedef herr_t (*H5T_vlen_writefunc_t)(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
 
 /* A VL datatype */
 typedef struct H5T_vlen_t {
@@ -779,14 +779,14 @@ H5_DLL htri_t H5T_bit_inc(uint8_t *buf, size_t start, size_t size);
 
 /* VL functions */
 H5_DLL hssize_t H5T_vlen_seq_mem_getlen(H5F_t *f, void *vl_addr);
-H5_DLL herr_t H5T_vlen_seq_mem_read(H5F_t *f, void *vl_addr, void *_buf, size_t len);
-H5_DLL herr_t H5T_vlen_seq_mem_write(hid_t dxpl_id, H5F_t *f, void *vl_addr, void *_buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
+H5_DLL herr_t H5T_vlen_seq_mem_read(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *_buf, size_t len);
+H5_DLL herr_t H5T_vlen_seq_mem_write(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *_buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
 H5_DLL hssize_t H5T_vlen_str_mem_getlen(H5F_t *f, void *vl_addr);
-H5_DLL herr_t H5T_vlen_str_mem_read(H5F_t *f, void *vl_addr, void *_buf, size_t len);
-H5_DLL herr_t H5T_vlen_str_mem_write(hid_t dxpl_id, H5F_t *f, void *vl_addr, void *_buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
+H5_DLL herr_t H5T_vlen_str_mem_read(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *_buf, size_t len);
+H5_DLL herr_t H5T_vlen_str_mem_write(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *_buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
 H5_DLL hssize_t H5T_vlen_disk_getlen(H5F_t *f, void *vl_addr);
-H5_DLL herr_t H5T_vlen_disk_read(H5F_t *f, void *vl_addr, void *_buf, size_t len);
-H5_DLL herr_t H5T_vlen_disk_write(hid_t dxpl_id, H5F_t *f, void *vl_addr, void *_buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
+H5_DLL herr_t H5T_vlen_disk_read(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *_buf, size_t len);
+H5_DLL herr_t H5T_vlen_disk_write(H5F_t *f, hid_t dxpl_id, void *vl_addr, void *_buf, void *bg_addr, hsize_t seq_len, hsize_t base_size);
 
 /* Array functions */
 H5_DLL H5T_t * H5T_array_create(H5T_t *base, int ndims,