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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 */
#define H5AC_BT_ID 0 /*B-tree nodes */
#define H5AC_SNODE_ID 1 /*symbol table nodes */
#define H5AC_LHEAP_ID 2 /*local heap */
#define H5AC_GHEAP_ID 3 /*global heap */
#define H5AC_OHDR_ID 4 /*object header */
#define H5AC_NTYPES 5
/* 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 */
/*
* 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 H5C.c) */
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;
/*
* Library prototypes.
*/
H5_DLL herr_t H5AC_init(void);
H5_DLL herr_t H5AC_create(const H5F_t *f, int size_hint);
H5_DLL herr_t H5AC_set(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr,
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_unprotect(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr,
void *thing, hbool_t deleted);
H5_DLL herr_t H5AC_flush(H5F_t *f, hid_t dxpl_id, const H5AC_class_t *type, haddr_t addr,
unsigned flags);
H5_DLL herr_t H5AC_rename(H5F_t *f, hid_t dxpl_id, 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(H5F_t *f);
#endif /* !_H5ACprivate_H */
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