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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5ACprivate.h
* Jul 9 1997
* Robb Matzke <matzke@llnl.gov>
*
* Purpose: Constants and typedefs available to the rest of the
* library.
*
* Modifications: JRM - 6/4/04
* Complete re-write for a new caching algorithm
* located in H5C.c
*
*-------------------------------------------------------------------------
*/
#ifndef _H5ACprivate_H
#define _H5ACprivate_H
#include "H5ACpublic.h" /*public prototypes */
/* Pivate headers needed by this header */
#include "H5private.h" /* Generic Functions */
#include "H5Fprivate.h" /* File access */
#include "H5Cprivate.h" /* cache */
/* Types of metadata objects cached */
typedef enum {
H5AC_BT_ID = 0, /*B-tree nodes */
H5AC_SNODE_ID, /*symbol table nodes */
H5AC_LHEAP_ID, /*local heap */
H5AC_GHEAP_ID, /*global heap */
H5AC_OHDR_ID, /*object header */
H5AC_BT2_HDR_ID, /*v2 B-tree header */
H5AC_BT2_INT_ID, /*v2 B-tree internal node */
H5AC_BT2_LEAF_ID, /*v2 B-tree leaf node */
H5AC_TEST_ID, /*test entry -- not used for actual files */
H5AC_FHEAP_HDR_ID, /*fractal heap header */
H5AC_NTYPES /* Number of types, must be last */
} H5AC_type_t;
/* H5AC_DUMP_STATS_ON_CLOSE should always be FALSE when
* H5C_COLLECT_CACHE_STATS is FALSE.
*
* When H5C_COLLECT_CACHE_STATS is TRUE, H5AC_DUMP_STATS_ON_CLOSE must
* be FALSE for "make check" to succeed, but may be set to TRUE at other
* times for debugging purposes.
*
* Hence the following, somewhat odd set of #defines.
*/
#if H5C_COLLECT_CACHE_STATS
#define H5AC_DUMP_STATS_ON_CLOSE 0
#else /* H5C_COLLECT_CACHE_STATS */
#define H5AC_DUMP_STATS_ON_CLOSE 0
#endif /* H5C_COLLECT_CACHE_STATS */
/* Default max metadata cache size and min clean size are give here.
* At present, these are the same as those given in H5Cprivate.h.
*/
#define H5AC__DEFAULT_MAX_CACHE_SIZE H5C__DEFAULT_MAX_CACHE_SIZE
#define H5AC__DEFAULT_MIN_CLEAN_SIZE H5C__DEFAULT_MIN_CLEAN_SIZE
/*
* Class methods pertaining to caching. Each type of cached object will
* have a constant variable with permanent life-span that describes how
* to cache the object. That variable will be of type H5AC_class_t and
* have the following required fields...
*
* LOAD: Loads an object from disk to memory. The function
* should allocate some data structure and return it.
*
* FLUSH: Writes some data structure back to disk. It would be
* wise for the data structure to include dirty flags to
* indicate whether it really needs to be written. This
* function is also responsible for freeing memory allocated
* by the LOAD method if the DEST argument is non-zero (by
* calling the DEST method).
*
* DEST: Just frees memory allocated by the LOAD method.
*
* CLEAR: Just marks object as non-dirty.
*
* SIZE: Report the size (on disk) of the specified cache object.
* Note that the space allocated on disk may not be contiguous.
*/
typedef H5C_load_func_t H5AC_load_func_t;
typedef H5C_flush_func_t H5AC_flush_func_t;
typedef H5C_dest_func_t H5AC_dest_func_t;
typedef H5C_clear_func_t H5AC_clear_func_t;
typedef H5C_size_func_t H5AC_size_func_t;
typedef H5C_class_t H5AC_class_t;
/* The H5AC_NSLOTS #define is now obsolete, as the metadata cache no longer
* uses slots. However I am leaving it in for now to avoid modifying the
* interface between the metadata cache and the rest of HDF. It should
* be removed when we get to dealing with the size_hint parameter in
* H5AC_create().
* JRM - 5/20/04
*
* Old comment on H5AC_NSLOTS follows:
*
* A cache has a certain number of entries. Objects are mapped into a
* cache entry by hashing the object's file address. Each file has its
* own cache, an array of slots.
*/
#define H5AC_NSLOTS 10330 /* The library "likes" this number... */
typedef H5C_cache_entry_t H5AC_info_t;
/*===----------------------------------------------------------------------===
* Protect Types
*===----------------------------------------------------------------------===
*
* These are for the wrapper functions to H5AC_protect. They specify what
* type of operation you're planning on doing to the metadata. The
* Flexible Parallel HDF5 locking can then act accordingly.
*/
typedef enum H5AC_protect_t {
H5AC_WRITE, /* Protect object for writing */
H5AC_READ /* Protect object for reading */
} H5AC_protect_t;
/* Typedef for metadata cache (defined in H5Cpkg.h) */
typedef H5C_t H5AC_t;
/* Metadata specific properties for FAPL */
/* (Only used for parallel I/O) */
#ifdef H5_HAVE_PARALLEL
/* Definitions for "block before metadata write" property */
#define H5AC_BLOCK_BEFORE_META_WRITE_NAME "H5AC_block_before_meta_write"
#define H5AC_BLOCK_BEFORE_META_WRITE_SIZE sizeof(unsigned)
#define H5AC_BLOCK_BEFORE_META_WRITE_DEF 0
/* Definitions for "library internal" property */
#define H5AC_LIBRARY_INTERNAL_NAME "H5AC_library_internal"
#define H5AC_LIBRARY_INTERNAL_SIZE sizeof(unsigned)
#define H5AC_LIBRARY_INTERNAL_DEF 0
#endif /* H5_HAVE_PARALLEL */
/* Dataset transfer property list for flush calls */
/* (Collective set, "block before metadata write" set and "library internal" set) */
/* (Global variable declaration, definition is in H5AC.c) */
extern hid_t H5AC_dxpl_id;
/* Dataset transfer property list for independent metadata I/O calls */
/* (just "library internal" set - i.e. independent transfer mode) */
/* (Global variable declaration, definition is in H5AC.c) */
extern hid_t H5AC_ind_dxpl_id;
/* Default cache configuration. */
#define H5AC__DEFAULT_CACHE_CONFIG \
{ \
/* int version = */ H5C__CURR_AUTO_SIZE_CTL_VER, \
/* hbool_t rpt_fcn_enabled = */ FALSE, \
/* hbool_t set_initial_size = */ TRUE, \
/* size_t initial_size = */ ( 1 * 1024 * 1024), \
/* double min_clean_fraction = */ 0.5, \
/* size_t max_size = */ (16 * 1024 * 1024), \
/* size_t min_size = */ ( 1 * 1024 * 1024), \
/* long int epoch_length = */ 50000, \
/* enum H5C_cache_incr_mode incr_mode = */ H5C_incr__threshold, \
/* double lower_hr_threshold = */ 0.9, \
/* double increment = */ 2.0, \
/* hbool_t apply_max_increment = */ TRUE, \
/* size_t max_increment = */ (4 * 1024 * 1024), \
/* enum H5C_cache_decr_mode decr_mode = */ H5C_decr__age_out_with_threshold,\
/* double upper_hr_threshold = */ 0.999, \
/* double decrement = */ 0.9, \
/* hbool_t apply_max_decrement = */ TRUE, \
/* size_t max_decrement = */ (1 * 1024 * 1024), \
/* int epochs_before_eviction = */ 3, \
/* hbool_t apply_empty_reserve = */ TRUE, \
/* double empty_reserve = */ 0.1, \
/* int dirty_bytes_threshold = */ (256 * 1024) \
}
/*
* Library prototypes.
*/
/* #defines of flags used in the flags parameters in some of the
* following function calls. Note that they are just copies of
* the equivalent flags from H5Cprivate.h.
*/
#define H5AC__NO_FLAGS_SET H5C__NO_FLAGS_SET
#define H5AC__SET_FLUSH_MARKER_FLAG H5C__SET_FLUSH_MARKER_FLAG
#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__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
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_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_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_rename(H5F_t *f, const H5AC_class_t *type,
haddr_t old_addr, haddr_t new_addr);
H5_DLL herr_t H5AC_dest(H5F_t *f, hid_t dxpl_id);
H5_DLL herr_t H5AC_stats(const H5F_t *f);
H5_DLL herr_t H5AC_get_cache_auto_resize_config(H5AC_t * cache_ptr,
H5AC_cache_config_t *config_ptr);
H5_DLL herr_t H5AC_get_cache_size(H5AC_t * cache_ptr,
size_t * max_size_ptr,
size_t * min_clean_size_ptr,
size_t * cur_size_ptr,
int32_t * cur_num_entries_ptr);
H5_DLL herr_t H5AC_get_cache_hit_rate(H5AC_t * cache_ptr,
double * hit_rate_ptr);
H5_DLL herr_t H5AC_reset_cache_hit_rate_stats(H5AC_t * cache_ptr);
H5_DLL herr_t H5AC_set_cache_auto_resize_config(H5AC_t * cache_ptr,
H5AC_cache_config_t *config_ptr);
H5_DLL herr_t H5AC_validate_config(H5AC_cache_config_t * config_ptr);
#endif /* !_H5ACprivate_H */
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