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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:
*
*-------------------------------------------------------------------------
*/
#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 */
/*
* Feature: Define H5AC_DEBUG on the compiler command line if you want to
* debug H5AC_protect() and H5AC_unprotect() by insuring that
* nothing accesses protected objects. NDEBUG must not be defined
* in order for this to have any effect.
*/
#ifdef NDEBUG
# undef H5AC_DEBUG
#endif
/*
* 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.
*/
typedef enum H5AC_subid_t {
H5AC_BT_ID = 0, /*B-tree nodes */
H5AC_SNODE_ID = 1, /*symbol table nodes */
H5AC_LHEAP_ID = 2, /*local heap */
H5AC_GHEAP_ID = 3, /*global heap */
H5AC_OHDR_ID = 4, /*object header */
H5AC_NTYPES = 5 /*THIS MUST BE LAST! */
} H5AC_subid_t;
typedef void *(*H5AC_load_func_t)(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *udata1, void *udata2);
typedef herr_t (*H5AC_flush_func_t)(H5F_t *f, hid_t dxpl_id, hbool_t dest, haddr_t addr, void *thing);
typedef herr_t (*H5AC_dest_func_t)(H5F_t *f, void *thing);
typedef herr_t (*H5AC_clear_func_t)(H5F_t *f, void *thing, hbool_t dest);
typedef struct H5AC_class_t {
H5AC_subid_t id;
H5AC_load_func_t load;
H5AC_flush_func_t flush;
H5AC_dest_func_t dest;
H5AC_clear_func_t clear;
} H5AC_class_t;
/*
* 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 struct H5AC_info_t {
const H5AC_class_t *type; /*type of object stored here */
haddr_t addr; /*file address for object */
hbool_t dirty; /* 'Dirty' flag for cached object */
} H5AC_info_t;
typedef H5AC_info_t *H5AC_info_ptr_t; /* Typedef for free lists */
/* Typedef for metadata cache (defined in H5AC.c) */
typedef struct H5AC_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);
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);
#ifdef H5AC_DEBUG
H5_DLL herr_t H5AC_stats(H5F_t *f);
#endif /* H5AC_DEBUG */
#endif /* !_H5ACprivate_H */
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