mirror of
https://github.com/HDFGroup/hdf5.git
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670d598ff7
Take further advantage of the readers/writer locking in the metadata cache
and push the locking of the local heap up to the routines which call B-tree
routines, which should drastically lower the number of metadata cache protect/
unprotect calls.
Tested on:
Mac OS X/32 10.4.9 (amazon)
Linux/32 2.6 (chicago)
Linux/64 2.6 (chicago2)
82 lines
3.2 KiB
C
82 lines
3.2 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*-------------------------------------------------------------------------
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*
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* Created: H5HLprivate.h
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* Jul 16 1997
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* Robb Matzke <matzke@llnl.gov>
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*
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* Purpose:
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*
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* Modifications:
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _H5HLprivate_H
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#define _H5HLprivate_H
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/* Include package's public header */
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#include "H5HLpublic.h"
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/* Private headers needed by this file. */
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#include "H5private.h" /* Generic Functions */
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#include "H5ACprivate.h" /* Metadata cache */
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#include "H5Fprivate.h" /* File access */
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/*
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* Feature: Define H5HL_DEBUG on the compiler command line if you want to
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* diagnostic messages from this layer.
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*/
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#ifdef NDEBUG
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# undef H5HL_DEBUG
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#endif
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#define H5HL_MAGIC "HEAP" /*heap magic number */
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#define H5HL_SIZEOF_MAGIC 4
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#define H5HL_ALIGN(X) (((X)+7)&(unsigned)(~0x07)) /*align on 8-byte boundary */
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#define H5HL_SIZEOF_FREE(F) \
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H5HL_ALIGN(H5F_SIZEOF_SIZE (F) + /*ptr to next free block */ \
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H5F_SIZEOF_SIZE (F)) /*size of this free block */
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/****************************/
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/* Library Private Typedefs */
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/****************************/
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/* Typedef for local heap in memory (defined in H5HLpkg.h) */
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typedef struct H5HL_t H5HL_t;
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/*
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* Library prototypes...
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*/
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H5_DLL herr_t H5HL_create(H5F_t *f, hid_t dxpl_id, size_t size_hint, haddr_t *addr/*out*/);
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H5_DLL H5HL_t *H5HL_protect(H5F_t *f, hid_t dxpl_id, haddr_t addr, H5AC_protect_t rw);
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H5_DLL void *H5HL_offset_into(H5F_t *f, const H5HL_t *heap, size_t offset);
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H5_DLL herr_t H5HL_remove(H5F_t *f, hid_t dxpl_id, H5HL_t *heap, size_t offset,
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size_t size);
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H5_DLL herr_t H5HL_unprotect(H5F_t *f, hid_t dxpl_id, H5HL_t *heap, haddr_t addr);
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H5_DLL size_t H5HL_insert(H5F_t *f, hid_t dxpl_id, H5HL_t *heap, size_t size,
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const void *buf);
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H5_DLL herr_t H5HL_delete(H5F_t *f, hid_t dxpl_id, haddr_t addr);
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H5_DLL herr_t H5HL_get_size(H5F_t *f, hid_t dxpl_id, haddr_t addr, size_t *size);
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/* Debugging functions */
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H5_DLL herr_t H5HL_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr, FILE * stream, int indent,
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int fwidth);
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#endif
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