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| author | John Mainzer <mainzer@hdfgroup.org> | 2006-04-28 13:27:54 (GMT) |
|---|---|---|
| committer | John Mainzer <mainzer@hdfgroup.org> | 2006-04-28 13:27:54 (GMT) |
| commit | 8a7b9b3221f192ed0e64b00c3a90d5e6a1fb9e19 (patch) | |
| tree | 2a4a38cc7b359149409ba55d919031ce9d25e932 /src/H5ACprivate.h | |
| parent | 6a77572c26b354541cafed74bf583e0de0ddfe9a (diff) | |
| download | hdf5-8a7b9b3221f192ed0e64b00c3a90d5e6a1fb9e19.zip hdf5-8a7b9b3221f192ed0e64b00c3a90d5e6a1fb9e19.tar.gz hdf5-8a7b9b3221f192ed0e64b00c3a90d5e6a1fb9e19.tar.bz2 | |
[svn-r12311] Purpose:
Add pinned entry capability to cache.
Description:
For frequently accessed cache entries, the protect/unprotect overhead
is sometimes a bottleneck.
Solution:
Allow entries to be pinned in the cache. Pinned entries can't be
evicted, but can be flushed or modified.
Platforms tested:
h5committested -- minus one small typo in test/cache.c whose fix was
tested on copper and heping only.
Misc. update:
Diffstat (limited to 'src/H5ACprivate.h')
| -rw-r--r-- | src/H5ACprivate.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/src/H5ACprivate.h b/src/H5ACprivate.h index 9d89621..a6844e4 100644 --- a/src/H5ACprivate.h +++ b/src/H5ACprivate.h @@ -221,23 +221,45 @@ extern hid_t H5AC_ind_dxpl_id; #define H5AC__DELETED_FLAG H5C__DELETED_FLAG #define H5AC__DIRTIED_FLAG H5C__DIRTIED_FLAG #define H5AC__SIZE_CHANGED_FLAG H5C__SIZE_CHANGED_FLAG +#define H5AC__PIN_ENTRY_FLAG H5C__PIN_ENTRY_FLAG +#define H5AC__UNPIN_ENTRY_FLAG H5C__UNPIN_ENTRY_FLAG #define H5AC__FLUSH_INVALIDATE_FLAG H5C__FLUSH_INVALIDATE_FLAG #define H5AC__FLUSH_CLEAR_ONLY_FLAG H5C__FLUSH_CLEAR_ONLY_FLAG #define H5AC__FLUSH_MARKED_ENTRIES_FLAG H5C__FLUSH_MARKED_ENTRIES_FLAG +/* #defines of flags used to report entry status in the + * H5AC_get_entry_status() call. + */ + +#define H5AC_ES__IN_CACHE 0x0001 +#define H5AC_ES__IS_DIRTY 0x0002 +#define H5AC_ES__IS_PROTECTED 0x0004 +#define H5AC_ES__IS_PINNED 0x0008 + + +/* external function declarations: */ H5_DLL herr_t H5AC_init(void); H5_DLL herr_t H5AC_create(const H5F_t *f, H5AC_cache_config_t *config_ptr); +H5_DLL herr_t H5AC_get_entry_status(H5C_t * cache_ptr, haddr_t addr, + unsigned * status_ptr); H5_DLL herr_t H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr, void *thing, unsigned int flags); -H5_DLL void *H5AC_protect(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, - haddr_t addr, const void *udata1, void *udata2, - H5AC_protect_t rw); +H5_DLL herr_t H5AC_pin_protected_entry(H5C_t * cache_ptr, void * thing); +H5_DLL void * H5AC_protect(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, + haddr_t addr, const void *udata1, void *udata2, + H5AC_protect_t rw); +H5_DLL herr_t H5AC_unpin_entry(H5C_t * cache_ptr, + void * thing); H5_DLL herr_t H5AC_unprotect(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr, void *thing, unsigned flags); H5_DLL herr_t H5AC_flush(H5F_t *f, hid_t dxpl_id, unsigned flags); +H5_DLL herr_t H5AC_mark_pinned_entry_dirty(H5C_t * cache_ptr, + void * thing, + hbool_t size_changed, + size_t new_size); H5_DLL herr_t H5AC_rename(H5F_t *f, const H5AC_class_t *type, haddr_t old_addr, haddr_t new_addr); |