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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: H5HLint.c
*
* Purpose: Local heap internal routines.
*
*-------------------------------------------------------------------------
*/
/****************/
/* 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_t struct */
H5FL_DEFINE_STATIC(H5HL_t);
/*-------------------------------------------------------------------------
* Function: H5HL__new
*
* Purpose: Create a new local heap object
*
* Return: Success: non-NULL pointer to new local heap
* Failure: NULL
*
*-------------------------------------------------------------------------
*/
H5HL_t *
H5HL__new(size_t sizeof_size, size_t sizeof_addr, size_t prfx_size)
{
H5HL_t *heap = NULL; /* New local heap */
H5HL_t *ret_value = NULL;
FUNC_ENTER_PACKAGE
/* check arguments */
assert(sizeof_size > 0);
assert(sizeof_addr > 0);
assert(prfx_size > 0);
/* Allocate new local heap structure */
if (NULL == (heap = H5FL_CALLOC(H5HL_t)))
HGOTO_ERROR(H5E_HEAP, H5E_CANTALLOC, NULL, "memory allocation failed");
/* Initialize non-zero fields */
heap->sizeof_size = sizeof_size;
heap->sizeof_addr = sizeof_addr;
heap->prfx_size = prfx_size;
/* Set the return value */
ret_value = heap;
done:
if (!ret_value && heap != NULL)
if (NULL == (heap = H5FL_FREE(H5HL_t, heap)))
HDONE_ERROR(H5E_HEAP, H5E_CANTFREE, NULL, "can't free heap memory");
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HL__new() */
/*-------------------------------------------------------------------------
* Function: H5HL__inc_rc
*
* Purpose: Increment ref. count on heap
*
* Return: SUCCEED (Can't fail)
*
*-------------------------------------------------------------------------
*/
herr_t
H5HL__inc_rc(H5HL_t *heap)
{
FUNC_ENTER_PACKAGE_NOERR
/* check arguments */
assert(heap);
/* Increment heap's ref. count */
heap->rc++;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5HL__inc_rc() */
/*-------------------------------------------------------------------------
* Function: H5HL__dec_rc
*
* Purpose: Decrement ref. count on heap
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5HL__dec_rc(H5HL_t *heap)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
/* check arguments */
assert(heap);
/* Decrement heap's ref. count */
heap->rc--;
/* Check if we should destroy the heap */
if (heap->rc == 0 && FAIL == H5HL__dest(heap))
HGOTO_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to destroy local heap");
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HL__dec_rc() */
/*-------------------------------------------------------------------------
* Function: H5HL__dest
*
* Purpose: Destroys a heap in memory.
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5HL__dest(H5HL_t *heap)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_PACKAGE
/* check arguments */
assert(heap);
/* Verify that node is unused */
assert(heap->prots == 0);
assert(heap->rc == 0);
assert(heap->prfx == NULL);
assert(heap->dblk == NULL);
/* Use DONE errors here to try to free as much as possible */
if (heap->dblk_image)
if (NULL != (heap->dblk_image = H5FL_BLK_FREE(lheap_chunk, heap->dblk_image)))
HDONE_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to free local heap data block image");
while (heap->freelist) {
H5HL_free_t *fl;
fl = heap->freelist;
heap->freelist = fl->next;
if (NULL != (fl = H5FL_FREE(H5HL_free_t, fl)))
HDONE_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to free local heap free list");
}
if (NULL != (heap = H5FL_FREE(H5HL_t, heap)))
HDONE_ERROR(H5E_HEAP, H5E_CANTFREE, FAIL, "unable to free local heap");
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HL__dest() */
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