/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 * * 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, 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); #endif /* !_H5ACprivate_H */