mirror of
https://github.com/HDFGroup/hdf5.git
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7b6db1046b
Code checkpoint
Description:
Checkpoint fractal heap improvements, as well as move the free space
manager code that it's using into a separate package.
Platforms tested:
FreeBSD 4.11 (sleipnir)
Linux 2.4/64 (mir) w/C++ & FORTRAN
Linux 2.4/32 (heping)
Solaris 2.9 (shanti)
AIX 5.? (copper) w/FORTRAN & parallel
288 lines
13 KiB
C
288 lines
13 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Programmer: Robb Matzke <matzke@llnl.gov>
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* Monday, July 26, 1999
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*/
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#ifndef _H5FDpublic_H
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#define _H5FDpublic_H
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#include "H5public.h"
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#include "H5Fpublic.h" /*for H5F_close_degree_t */
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#define H5_HAVE_VFL 1 /*define a convenient app feature test*/
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#define H5FD_VFD_DEFAULT 0 /* Default VFL driver value */
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/*
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* Types of allocation requests. The values larger than H5FD_MEM_DEFAULT
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* should not change other than adding new types to the end. These numbers
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* might appear in files.
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*/
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typedef enum H5FD_mem_t {
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H5FD_MEM_NOLIST = -1, /*must be negative*/
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H5FD_MEM_DEFAULT = 0, /*must be zero*/
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H5FD_MEM_SUPER = 1,
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H5FD_MEM_BTREE = 2,
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H5FD_MEM_DRAW = 3,
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H5FD_MEM_GHEAP = 4,
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H5FD_MEM_LHEAP = 5,
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H5FD_MEM_OHDR = 6,
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H5FD_MEM_NTYPES /*must be last*/
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} H5FD_mem_t;
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/* Map "fractal heap" header blocks to 'ohdr' type file memory, since its
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* a fair amount of work to add a new kind of file memory and they are similar
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* enough to object headers and probably too minor to deserve their own type.
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*
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* Map "fractal heap" indirect blocks to 'ohdr' type file memory, since they
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* are similar to fractal heap header blocks.
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*
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* Map "fractal heap" direct blocks to 'lheap' type file memory, since they
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* will be replacing local heaps.
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*
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* -QAK
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*/
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#define H5FD_MEM_FHEAP_HDR H5FD_MEM_OHDR
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#define H5FD_MEM_FHEAP_IBLOCK H5FD_MEM_OHDR
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#define H5FD_MEM_FHEAP_DBLOCK H5FD_MEM_LHEAP
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/* Map "free space" header blocks to 'ohdr' type file memory, since its
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* a fair amount of work to add a new kind of file memory and they are similar
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* enough to object headers and probably too minor to deserve their own type.
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*
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* Map "free space" serialized sections to 'lheap' type file memory, since they
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* are similar enough to local heap info.
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*
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* -QAK
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*/
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#define H5FD_MEM_FSPACE_HDR H5FD_MEM_OHDR
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#define H5FD_MEM_FSPACE_SECTS H5FD_MEM_LHEAP
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/*
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* A free-list map which maps all types of allocation requests to a single
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* free list. This is useful for drivers that don't really care about
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* keeping different requests segregated in the underlying file and which
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* want to make most efficient reuse of freed memory. The use of the
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* H5FD_MEM_SUPER free list is arbitrary.
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*/
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#define H5FD_FLMAP_SINGLE { \
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H5FD_MEM_SUPER, /*default*/ \
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H5FD_MEM_SUPER, /*super*/ \
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H5FD_MEM_SUPER, /*btree*/ \
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H5FD_MEM_SUPER, /*draw*/ \
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H5FD_MEM_SUPER, /*gheap*/ \
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H5FD_MEM_SUPER, /*lheap*/ \
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H5FD_MEM_SUPER /*ohdr*/ \
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}
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/*
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* A free-list map which segregates requests into `raw' or `meta' data
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* pools.
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*/
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#define H5FD_FLMAP_DICHOTOMY { \
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H5FD_MEM_SUPER, /*default*/ \
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H5FD_MEM_SUPER, /*super*/ \
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H5FD_MEM_SUPER, /*btree*/ \
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H5FD_MEM_DRAW, /*draw*/ \
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H5FD_MEM_SUPER, /*gheap*/ \
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H5FD_MEM_SUPER, /*lheap*/ \
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H5FD_MEM_SUPER /*ohdr*/ \
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}
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/*
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* The default free list map which causes each request type to use it's own
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* free-list.
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*/
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#define H5FD_FLMAP_DEFAULT { \
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H5FD_MEM_DEFAULT, /*default*/ \
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H5FD_MEM_DEFAULT, /*super*/ \
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H5FD_MEM_DEFAULT, /*btree*/ \
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H5FD_MEM_DEFAULT, /*draw*/ \
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H5FD_MEM_DEFAULT, /*gheap*/ \
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H5FD_MEM_DEFAULT, /*lheap*/ \
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H5FD_MEM_DEFAULT /*ohdr*/ \
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}
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/* Define VFL driver features that can be enabled on a per-driver basis */
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/* These are returned with the 'query' function pointer in H5FD_class_t */
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/*
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* Defining the H5FD_FEAT_AGGREGATE_METADATA for a VFL driver means that
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* the library will attempt to allocate a larger block for metadata and
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* then sub-allocate each metadata request from that larger block.
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*/
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#define H5FD_FEAT_AGGREGATE_METADATA 0x00000001
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/*
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* Defining the H5FD_FEAT_ACCUMULATE_METADATA for a VFL driver means that
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* the library will attempt to cache metadata as it is written to the file
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* and build up a larger block of metadata to eventually pass to the VFL
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* 'write' routine.
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*
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* Distinguish between updating the metadata accumulator on writes and
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* reads. This is particularly (perhaps only, even) important for MPI-I/O
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* where we guarantee that writes are collective, but reads may not be.
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* If we were to allow the metadata accumulator to be written during a
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* read operation, the application would hang.
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*/
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#define H5FD_FEAT_ACCUMULATE_METADATA_WRITE 0x00000002
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#define H5FD_FEAT_ACCUMULATE_METADATA_READ 0x00000004
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#define H5FD_FEAT_ACCUMULATE_METADATA (H5FD_FEAT_ACCUMULATE_METADATA_WRITE|H5FD_FEAT_ACCUMULATE_METADATA_READ)
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/*
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* Defining the H5FD_FEAT_DATA_SIEVE for a VFL driver means that
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* the library will attempt to cache raw data as it is read from/written to
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* a file in a "data seive" buffer. See Rajeev Thakur's papers:
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* http://www.mcs.anl.gov/~thakur/papers/romio-coll.ps.gz
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* http://www.mcs.anl.gov/~thakur/papers/mpio-high-perf.ps.gz
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*/
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#define H5FD_FEAT_DATA_SIEVE 0x00000008
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/*
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* Defining the H5FD_FEAT_AGGREGATE_SMALLDATA for a VFL driver means that
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* the library will attempt to allocate a larger block for "small" raw data
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* and then sub-allocate "small" raw data requests from that larger block.
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*/
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#define H5FD_FEAT_AGGREGATE_SMALLDATA 0x00000010
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/* Forward declaration */
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typedef struct H5FD_t H5FD_t;
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/* Class information for each file driver */
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typedef struct H5FD_class_t {
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const char *name;
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haddr_t maxaddr;
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H5F_close_degree_t fc_degree;
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hsize_t (*sb_size)(H5FD_t *file);
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herr_t (*sb_encode)(H5FD_t *file, char *name/*out*/,
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unsigned char *p/*out*/);
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herr_t (*sb_decode)(H5FD_t *f, const char *name, const unsigned char *p);
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size_t fapl_size;
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void * (*fapl_get)(H5FD_t *file);
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void * (*fapl_copy)(const void *fapl);
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herr_t (*fapl_free)(void *fapl);
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size_t dxpl_size;
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void * (*dxpl_copy)(const void *dxpl);
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herr_t (*dxpl_free)(void *dxpl);
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H5FD_t *(*open)(const char *name, unsigned flags, hid_t fapl,
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haddr_t maxaddr);
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herr_t (*close)(H5FD_t *file);
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int (*cmp)(const H5FD_t *f1, const H5FD_t *f2);
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herr_t (*query)(const H5FD_t *f1, unsigned long *flags);
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haddr_t (*alloc)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, hsize_t size);
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herr_t (*free)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id,
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haddr_t addr, hsize_t size);
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haddr_t (*get_eoa)(const H5FD_t *file);
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herr_t (*set_eoa)(H5FD_t *file, haddr_t addr);
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haddr_t (*get_eof)(const H5FD_t *file);
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herr_t (*get_handle)(H5FD_t *file, hid_t fapl, void**file_handle);
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herr_t (*read)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl,
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haddr_t addr, size_t size, void *buffer);
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herr_t (*write)(H5FD_t *file, H5FD_mem_t type, hid_t dxpl,
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haddr_t addr, size_t size, const void *buffer);
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herr_t (*flush)(H5FD_t *file, hid_t dxpl_id, unsigned closing);
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herr_t (*lock)(H5FD_t *file, unsigned char *oid, unsigned lock_type, hbool_t last);
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herr_t (*unlock)(H5FD_t *file, unsigned char *oid, hbool_t last);
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H5FD_mem_t fl_map[H5FD_MEM_NTYPES];
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} H5FD_class_t;
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/* A free list is a singly-linked list of address/size pairs. */
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typedef struct H5FD_free_t {
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haddr_t addr;
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hsize_t size;
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struct H5FD_free_t *next;
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} H5FD_free_t;
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/*
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* The main datatype for each driver. Public fields common to all drivers
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* are declared here and the driver appends private fields in memory.
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*/
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struct H5FD_t {
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hid_t driver_id; /*driver ID for this file */
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const H5FD_class_t *cls; /*constant class info */
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unsigned long fileno; /* File serial number */
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unsigned long feature_flags; /* VFL Driver feature Flags */
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hsize_t threshold; /* Threshold for alignment */
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hsize_t alignment; /* Allocation alignment */
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hsize_t reserved_alloc; /* Space reserved for later alloc calls */
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/* Metadata aggregation fields */
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hsize_t def_meta_block_size; /* Metadata allocation
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* block size (if
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* aggregating metadata) */
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hsize_t cur_meta_block_size; /* Current size of metadata
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* allocation region left */
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haddr_t eoma; /* End of metadata
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* allocated region */
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/* "Small data" aggregation fields */
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hsize_t def_sdata_block_size; /* "Small data"
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* allocation block size
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* (if aggregating "small
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* data") */
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hsize_t cur_sdata_block_size; /* Current size of "small
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* data" allocation
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* region left */
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haddr_t eosda; /* End of "small data"
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* allocated region */
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/* Metadata accumulator fields */
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unsigned char *meta_accum; /* Buffer to hold the accumulated metadata */
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haddr_t accum_loc; /* File location (offset) of the
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* accumulated metadata */
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size_t accum_size; /* Size of the accumulated
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* metadata buffer used (in
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* bytes) */
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size_t accum_buf_size; /* Size of the accumulated
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* metadata buffer allocated (in
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* bytes) */
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unsigned accum_dirty; /* Flag to indicate that the
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* accumulated metadata is dirty */
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haddr_t maxaddr; /* For this file, overrides class */
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H5FD_free_t *fl[H5FD_MEM_NTYPES]; /* Freelist per allocation type */
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hsize_t maxsize; /* Largest object on FL, or zero */
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Function prototypes */
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H5_DLL hid_t H5FDregister(const H5FD_class_t *cls);
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H5_DLL herr_t H5FDunregister(hid_t driver_id);
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H5_DLL H5FD_t *H5FDopen(const char *name, unsigned flags, hid_t fapl_id,
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haddr_t maxaddr);
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H5_DLL herr_t H5FDclose(H5FD_t *file);
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H5_DLL int H5FDcmp(const H5FD_t *f1, const H5FD_t *f2);
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H5_DLL int H5FDquery(const H5FD_t *f, unsigned long *flags);
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H5_DLL haddr_t H5FDalloc(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, hsize_t size);
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H5_DLL herr_t H5FDfree(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id,
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haddr_t addr, hsize_t size);
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H5_DLL haddr_t H5FDrealloc(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id,
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haddr_t addr, hsize_t old_size, hsize_t new_size);
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H5_DLL haddr_t H5FDget_eoa(H5FD_t *file);
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H5_DLL herr_t H5FDset_eoa(H5FD_t *file, haddr_t eof);
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H5_DLL haddr_t H5FDget_eof(H5FD_t *file);
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H5_DLL herr_t H5FDget_vfd_handle(H5FD_t *file, hid_t fapl, void**file_handle);
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H5_DLL herr_t H5FDread(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id,
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haddr_t addr, size_t size, void *buf/*out*/);
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H5_DLL herr_t H5FDwrite(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id,
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haddr_t addr, size_t size, const void *buf);
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H5_DLL herr_t H5FDflush(H5FD_t *file, hid_t dxpl_id, unsigned closing);
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#ifdef __cplusplus
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}
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#endif
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#endif
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