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Diffstat (limited to 'src/H5HLprfx.c')
| -rw-r--r-- | src/H5HLprfx.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/H5HLprfx.c b/src/H5HLprfx.c new file mode 100644 index 0000000..66c4dad --- /dev/null +++ b/src/H5HLprfx.c @@ -0,0 +1,166 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/*------------------------------------------------------------------------- + * + * Created: H5HLprfx.c + * Summer 2012 + * Dana Robinson <derobins@hdfgroup.org> + * + * Purpose: Prefix routines for local heaps. + * + *------------------------------------------------------------------------- + */ + +/****************/ +/* Module Setup */ +/****************/ + +#include "H5HLmodule.h" /* This source code file is part of the H5HL module */ + + +/***********/ +/* Headers */ +/***********/ +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5FLprivate.h" /* Free lists */ +#include "H5HLpkg.h" /* Local Heaps */ + + +/****************/ +/* Local Macros */ +/****************/ + + +/******************/ +/* Local Typedefs */ +/******************/ + + +/********************/ +/* Package Typedefs */ +/********************/ + + +/********************/ +/* Local Prototypes */ +/********************/ + + +/*********************/ +/* Package Variables */ +/*********************/ + + +/*****************************/ +/* Library Private Variables */ +/*****************************/ + + +/*******************/ +/* Local Variables */ +/*******************/ + +/* Declare a free list to manage the H5HL_prfx_t struct */ +H5FL_DEFINE_STATIC(H5HL_prfx_t); + + + +/*------------------------------------------------------------------------- + * Function: H5HL__prfx_new + * + * Purpose: Create a new local heap prefix object + * + * Return: Success: non-NULL pointer to new local heap prefix + * Failure: NULL + * + * Programmer: Quincey Koziol + * Oct 12 2008 + * + *------------------------------------------------------------------------- + */ +BEGIN_FUNC(PKG, ERR, +H5HL_prfx_t *, NULL, NULL, +H5HL__prfx_new(H5HL_t *heap)) + + H5HL_prfx_t *prfx = NULL; /* New local heap prefix */ + + /* check arguments */ + HDassert(heap); + + /* Allocate new local heap prefix */ + if(NULL == (prfx = H5FL_CALLOC(H5HL_prfx_t))) + H5E_THROW(H5E_CANTALLOC, "memory allocation failed for local heap prefix") + + /* Increment ref. count on heap data structure */ + if(FAIL == H5HL__inc_rc(heap)) + H5E_THROW(H5E_CANTINC, "can't increment heap ref. count") + + /* Link the heap & the prefix */ + prfx->heap = heap; + heap->prfx = prfx; + + /* Set the return value */ + ret_value = prfx; + +CATCH + /* Ensure that the prefix memory is deallocated on errors */ + if(!ret_value && prfx != NULL) { + /* H5FL_FREE always returns NULL so we can't check for errors */ + prfx = H5FL_FREE(H5HL_prfx_t, prfx); + } + +END_FUNC(PKG) /* end H5HL__prfx_new() */ + + +/*------------------------------------------------------------------------- + * Function: H5HL__prfx_dest + * + * Purpose: Destroy a local heap prefix object + * + * Return: SUCCEED/FAIL + * + * Programmer: Quincey Koziol + * Oct 12 2008 + * + *------------------------------------------------------------------------- + */ +BEGIN_FUNC(PKG, ERR, +herr_t, SUCCEED, FAIL, +H5HL__prfx_dest(H5HL_prfx_t *prfx)) + + /* check arguments */ + HDassert(prfx); + + /* Check if prefix was initialized */ + if(prfx->heap) { + /* Unlink prefix from heap */ + prfx->heap->prfx = NULL; + + /* Decrement ref. count on heap data structure */ + if(FAIL == H5HL__dec_rc(prfx->heap)) + H5E_THROW(H5E_CANTDEC, "can't decrement heap ref. count") + + /* Unlink heap from prefix */ + prfx->heap = NULL; + } /* end if */ + +CATCH + /* Free prefix memory */ + /* H5FL_FREE always returns NULL so we can't check for errors */ + prfx = H5FL_FREE(H5HL_prfx_t, prfx); + +END_FUNC(PKG) /* end H5HL__prfx_dest() */ |