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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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: H5HLdblk.c
* Summer 2012
* Dana Robinson <derobins@hdfgroup.org>
*
* Purpose: Data block 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 */
#include "H5MFprivate.h" /* File memory management */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Declare a free list to manage the H5HL_dblk_t struct */
H5FL_DEFINE_STATIC(H5HL_dblk_t);
/*-------------------------------------------------------------------------
* Function: H5HL__dblk_new
*
* Purpose: Create a new local heap data block object
*
* Return: Success: non-NULL pointer to new local heap data block
* Failure: NULL
*
* Programmer: Quincey Koziol
* Oct 12 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
H5HL_dblk_t *, NULL, NULL,
H5HL__dblk_new(H5HL_t *heap))
H5HL_dblk_t *dblk = NULL; /* New local heap data block */
/* check arguments */
HDassert(heap);
/* Allocate new local heap data block */
if(NULL == (dblk = H5FL_CALLOC(H5HL_dblk_t)))
H5E_THROW(H5E_CANTALLOC, "memory allocation failed for local heap data block")
/* 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 data block */
dblk->heap = heap;
heap->dblk = dblk;
/* Set the return value */
ret_value = dblk;
CATCH
/* Ensure that the data block memory is deallocated on errors */
if(!ret_value && dblk != NULL) {
/* H5FL_FREE always returns NULL so we can't check for errors */
dblk = H5FL_FREE(H5HL_dblk_t, dblk);
}
END_FUNC(PKG) /* end H5HL__dblk_new() */
/*-------------------------------------------------------------------------
* Function: H5HL__dblk_dest
*
* Purpose: Destroy a local heap data block object
*
* Return: SUCCEED/FAIL
*
* Programmer: Quincey Koziol
* Oct 12 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5HL__dblk_dest(H5HL_dblk_t *dblk))
/* check arguments */
HDassert(dblk);
/* Check if data block was initialized */
if(dblk->heap) {
/* Unlink data block from heap */
dblk->heap->dblk = NULL;
/* Unpin the local heap prefix */
if(FAIL == H5AC_unpin_entry(dblk->heap->prfx))
H5E_THROW(H5E_CANTUNPIN, "can't unpin local heap prefix")
/* Decrement ref. count on heap data structure */
if(FAIL == H5HL__dec_rc(dblk->heap))
H5E_THROW(H5E_CANTDEC, "can't decrement heap ref. count")
/* Unlink heap from data block */
dblk->heap = NULL;
} /* end if */
CATCH
/* Free local heap data block */
/* H5FL_FREE always returns NULL so we can't check for errors */
dblk = H5FL_FREE(H5HL_dblk_t, dblk);
END_FUNC(PKG) /* end H5HL__dblk_dest() */
/*-------------------------------------------------------------------------
* Function: H5HL__dblk_realloc
*
* Purpose: Reallocate data block for heap
*
* Return: SUCCEED/FAIL
*
* Programmer: Quincey Koziol
* Oct 12 2008
*
*-------------------------------------------------------------------------
*/
BEGIN_FUNC(PKG, ERR,
herr_t, SUCCEED, FAIL,
H5HL__dblk_realloc(H5F_t *f, hid_t dxpl_id, H5HL_t *heap, size_t new_heap_size))
H5HL_dblk_t *dblk; /* Local heap data block */
haddr_t old_addr; /* Old location of heap data block */
haddr_t new_addr; /* New location of heap data block */
size_t old_heap_size; /* Old size of heap data block */
/* check arguments */
HDassert(heap);
HDassert(new_heap_size > 0);
/* Release old space on disk */
old_addr = heap->dblk_addr;
old_heap_size = heap->dblk_size;
H5_CHECK_OVERFLOW(old_heap_size, size_t, hsize_t);
if(FAIL == H5MF_xfree(f, H5FD_MEM_LHEAP, dxpl_id, old_addr, (hsize_t)old_heap_size))
H5E_THROW(H5E_CANTFREE, "can't free old local heap data");
/* Allocate new space on disk */
H5_CHECK_OVERFLOW(new_heap_size, size_t, hsize_t);
if(HADDR_UNDEF == (new_addr = H5MF_alloc(f, H5FD_MEM_LHEAP, dxpl_id, (hsize_t)new_heap_size)))
H5E_THROW(H5E_CANTALLOC, "unable to allocate file space for local heap");
/* Update heap info*/
heap->dblk_addr = new_addr;
heap->dblk_size = new_heap_size;
/* Check if heap data block actually moved in the file */
if(H5F_addr_eq(old_addr, new_addr)) {
/* Check if heap data block is contiguous w/prefix */
if(heap->single_cache_obj) {
/* Sanity check */
HDassert(H5F_addr_eq(heap->prfx_addr + heap->prfx_size, old_addr));
HDassert(heap->prfx);
/* Resize the heap prefix in the cache */
if(FAIL == H5AC_resize_entry(heap->prfx, (size_t)(heap->prfx_size + new_heap_size)))
H5E_THROW(H5E_CANTRESIZE, "unable to resize heap in cache");
} /* end if */
else {
/* Sanity check */
HDassert(H5F_addr_ne(heap->prfx_addr + heap->prfx_size, old_addr));
HDassert(heap->dblk);
/* Resize the heap data block in the cache */
if(H5AC_resize_entry(heap->dblk, (size_t)new_heap_size) < 0)
H5E_THROW(H5E_CANTRESIZE, "unable to resize heap (data block) in cache");
} /* end else */
} /* end if */
else {
/* Check if heap data block was contiguous w/prefix previously */
if(heap->single_cache_obj) {
/* Create new heap data block */
if(NULL == (dblk = H5HL__dblk_new(heap)))
H5E_THROW(H5E_CANTALLOC, "unable to allocate local heap data block");
/* Resize current heap prefix */
heap->prfx_size = H5HL_SIZEOF_HDR(f);
if(FAIL == H5AC_resize_entry(heap->prfx, (size_t)heap->prfx_size))
H5E_THROW(H5E_CANTRESIZE, "unable to resize heap prefix in cache");
/* Insert data block into cache (pinned) */
if(FAIL == H5AC_insert_entry(f, dxpl_id, H5AC_LHEAP_DBLK, new_addr, dblk, H5AC__PIN_ENTRY_FLAG))
H5E_THROW(H5E_CANTINIT, "unable to cache local heap data block");
dblk = NULL;
/* Reset 'single cache object' flag */
heap->single_cache_obj = FALSE;
} /* end if */
else {
/* Resize the heap data block in the cache */
/* (ignore [unlikely] case where heap data block ends up
* contiguous w/heap prefix again.
*/
if(FAIL == H5AC_resize_entry(heap->dblk, (size_t)new_heap_size))
H5E_THROW(H5E_CANTRESIZE, "unable to resize heap data block in cache");
/* Relocate the heap data block in the cache */
if(FAIL == H5AC_move_entry(f, H5AC_LHEAP_DBLK, old_addr, new_addr))
H5E_THROW(H5E_CANTMOVE, "unable to move heap data block in cache");
} /* end else */
} /* end else */
CATCH
/* Restore old heap address & size on errors */
if(FAIL == ret_value) {
heap->dblk_addr = old_addr;
heap->dblk_size = old_heap_size;
} /* end if */
END_FUNC(PKG) /* end H5HL__dblk_realloc() */
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