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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5HLdblk.c
*
* 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
*
*-------------------------------------------------------------------------
*/
H5HL_dblk_t *
H5HL__dblk_new(H5HL_t *heap)
{
H5HL_dblk_t *dblk = NULL; /* New local heap data block */
H5HL_dblk_t *ret_value = NULL;
FUNC_ENTER_PACKAGE
/* check arguments */
assert(heap);
/* Allocate new local heap data block */
if (NULL == (dblk = H5FL_CALLOC(H5HL_dblk_t)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTALLOC, NULL, "memory allocation failed for local heap data block");
/* Increment ref. count on heap data structure */
if (FAIL == H5HL__inc_rc(heap))
HGOTO_ERROR(H5E_HEAP, H5E_CANTINC, NULL, "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;
done:
/* 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);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HL__dblk_new() */
/*-------------------------------------------------------------------------
* Function: H5HL__dblk_dest
*
* Purpose: Destroy a local heap data block object
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5HL__dblk_dest(H5HL_dblk_t *dblk)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
/* check arguments */
assert(dblk);
/* Check if data block was initialized */
if (dblk->heap) {
/* Unlink data block from heap */
dblk->heap->dblk = NULL;
/* Decrement ref. count on heap data structure */
if (FAIL == H5HL__dec_rc(dblk->heap))
HGOTO_ERROR(H5E_HEAP, H5E_CANTDEC, FAIL, "can't decrement heap ref. count");
/* Unlink heap from data block */
dblk->heap = NULL;
}
done:
/* Free local heap data block */
/* H5FL_FREE always returns NULL so we can't check for errors */
dblk = H5FL_FREE(H5HL_dblk_t, dblk);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HL__dblk_dest() */
/*-------------------------------------------------------------------------
* Function: H5HL__dblk_realloc
*
* Purpose: Reallocate data block for heap
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5HL__dblk_realloc(H5F_t *f, 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 */
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
/* Check arguments */
assert(heap);
assert(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, old_addr, (hsize_t)old_heap_size))
HGOTO_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "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, (hsize_t)new_heap_size)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTALLOC, FAIL, "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 (H5_addr_eq(old_addr, new_addr)) {
/* Check if heap data block is contiguous w/prefix */
if (heap->single_cache_obj) {
/* Sanity check */
assert(H5_addr_eq(heap->prfx_addr + heap->prfx_size, old_addr));
assert(heap->prfx);
/* Resize the heap prefix in the cache */
if (FAIL == H5AC_resize_entry(heap->prfx, (size_t)(heap->prfx_size + new_heap_size)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTRESIZE, FAIL, "unable to resize heap in cache");
}
else {
/* Sanity check */
assert(H5_addr_ne(heap->prfx_addr + heap->prfx_size, old_addr));
assert(heap->dblk);
/* Resize the heap data block in the cache */
if (H5AC_resize_entry(heap->dblk, (size_t)new_heap_size) < 0)
HGOTO_ERROR(H5E_HEAP, H5E_CANTRESIZE, FAIL, "unable to resize heap (data block) in cache");
}
}
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)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTALLOC, FAIL, "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))
HGOTO_ERROR(H5E_HEAP, H5E_CANTRESIZE, FAIL, "unable to resize heap prefix in cache");
/* Insert data block into cache (pinned) */
if (FAIL == H5AC_insert_entry(f, H5AC_LHEAP_DBLK, new_addr, dblk, H5AC__PIN_ENTRY_FLAG))
HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "unable to cache local heap data block");
dblk = NULL;
/* Reset 'single cache object' flag */
heap->single_cache_obj = FALSE;
}
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))
HGOTO_ERROR(H5E_HEAP, H5E_CANTRESIZE, FAIL, "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))
HGOTO_ERROR(H5E_HEAP, H5E_CANTMOVE, FAIL, "unable to move heap data block in cache");
}
}
done:
/* Restore old heap address & size on errors */
if (FAIL == ret_value) {
heap->dblk_addr = old_addr;
heap->dblk_size = old_heap_size;
}
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HL__dblk_realloc() */
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