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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: H5HLint.c
+ * Oct 12 2008
+ * Quincey Koziol <koziol@hdfgroup.org>
+ *
+ * Purpose: Local heap internal routines.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/****************/
+/* Module Setup */
+/****************/
+
+#define H5HL_PACKAGE /* Suppress error about including H5HLpkg */
+
+
+/***********/
+/* Headers */
+/***********/
+#include "H5private.h" /* Generic Functions */
+#include "H5Eprivate.h" /* Error handling */
+#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);
+
+/* Declare a free list to manage the H5HL_dblk_t struct */
+H5FL_DEFINE_STATIC(H5HL_dblk_t);
+
+/* Declare a free list to manage the H5HL_prfx_t struct */
+H5FL_DEFINE_STATIC(H5HL_prfx_t);
+
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5HL_new
+ *
+ * Purpose: Create a new local heap object
+ *
+ * Return: Success: non-NULL pointer to new local heap
+ * Failure: NULL
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Jan 5 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+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; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5HL_new, NULL)
+
+ /* check arguments */
+ HDassert(sizeof_size > 0);
+ HDassert(sizeof_addr > 0);
+ HDassert(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:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5HL_new() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5HL_inc_rc
+ *
+ * Purpose: Increment ref. count on heap
+ *
+ * Return: Success: Non-negative
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Oct 12 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5HL_inc_rc(H5HL_t *heap)
+{
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_inc_rc)
+
+ /* check arguments */
+ HDassert(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: Success: Non-negative
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Oct 12 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5HL_dec_rc(H5HL_t *heap)
+{
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HL_dec_rc)
+
+ /* check arguments */
+ HDassert(heap);
+
+ /* Decrement heap's ref. count */
+ heap->rc--;
+
+ /* Check if we should destroy the heap */
+ if(heap->rc == 0)
+ H5HL_dest(heap);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5HL_dec_rc() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5HL_dest
+ *
+ * Purpose: Destroys a heap in memory.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Jan 15 2003
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5HL_dest(H5HL_t *heap)
+{
+ FUNC_ENTER_NOAPI_NOFUNC(H5HL_dest)
+
+ /* check arguments */
+ HDassert(heap);
+
+ /* Verify that node is unused */
+ HDassert(heap->prots == 0);
+ HDassert(heap->rc == 0);
+ HDassert(heap->prfx == NULL);
+ HDassert(heap->dblk == NULL);
+
+ if(heap->dblk_image)
+ heap->dblk_image = H5FL_BLK_FREE(lheap_chunk, heap->dblk_image);
+ while(heap->freelist) {
+ H5HL_free_t *fl;
+
+ fl = heap->freelist;
+ heap->freelist = fl->next;
+ fl = H5FL_FREE(H5HL_free_t, fl);
+ } /* end while */
+ heap = H5FL_FREE(H5HL_t, heap);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* end H5HL_dest() */
+
+
+/*-------------------------------------------------------------------------
+ * 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
+ * koziol@hdfgroup.org
+ * Oct 12 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+H5HL_prfx_t *
+H5HL_prfx_new(H5HL_t *heap)
+{
+ H5HL_prfx_t *prfx = NULL; /* New local heap prefix */
+ H5HL_prfx_t *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5HL_prfx_new, NULL)
+
+ /* check arguments */
+ HDassert(heap);
+
+ /* Allocate new local heap prefix */
+ if(NULL == (prfx = H5FL_CALLOC(H5HL_prfx_t)))
+ HGOTO_ERROR(H5E_HEAP, H5E_CANTALLOC, NULL, "memory allocation failed")
+
+ /* Increment ref. count on heap data structure */
+ if(H5HL_inc_rc(heap) < 0)
+ HGOTO_ERROR(H5E_HEAP, H5E_CANTINC, NULL, "can't increment heap ref. count")
+
+ /* Link the heap & the prefix */
+ prfx->heap = heap;
+ heap->prfx = prfx;
+
+ /* Set the return value */
+ ret_value = prfx;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5HL_prfx_new() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5HL_prfx_dest
+ *
+ * Purpose: Destroy a local heap prefix object
+ *
+ * Return: Success: Non-negative
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Oct 12 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5HL_prfx_dest(H5HL_prfx_t *prfx)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5HL_prfx_dest, FAIL)
+
+ /* 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(H5HL_dec_rc(prfx->heap) < 0)
+ HGOTO_ERROR(H5E_HEAP, H5E_CANTDEC, FAIL, "can't decrement heap ref. count")
+
+ /* Unlink heap from prefix */
+ prfx->heap = NULL;
+ } /* end if */
+
+ /* Free local heap prefix */
+ prfx = H5FL_FREE(H5HL_prfx_t, prfx);
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5HL_prfx_dest() */
+
+
+/*-------------------------------------------------------------------------
+ * 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
+ * koziol@hdfgroup.org
+ * Oct 12 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+H5HL_dblk_t *
+H5HL_dblk_new(H5HL_t *heap)
+{
+ H5HL_dblk_t *dblk = NULL; /* New local heap data block */
+ H5HL_dblk_t *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5HL_dblk_new, NULL)
+
+ /* check arguments */
+ HDassert(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")
+
+ /* Increment ref. count on heap data structure */
+ if(H5HL_inc_rc(heap) < 0)
+ 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:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5HL_dblk_new() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5HL_dblk_dest
+ *
+ * Purpose: Destroy a local heap data block object
+ *
+ * Return: Success: Non-negative
+ * Failure: Negative
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * Oct 12 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5HL_dblk_dest(H5F_t *f, H5HL_dblk_t *dblk)
+{
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5HL_dblk_dest, FAIL)
+
+ /* 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(H5AC_unpin_entry(f, dblk->heap->prfx) < 0)
+ HGOTO_ERROR(H5E_HEAP, H5E_CANTUNPIN, FAIL, "can't unpin local heap prefix")
+
+ /* Decrement ref. count on heap data structure */
+ if(H5HL_dec_rc(dblk->heap) < 0)
+ HGOTO_ERROR(H5E_HEAP, H5E_CANTDEC, FAIL, "can't decrement heap ref. count")
+
+ /* Unlink heap from data block */
+ dblk->heap = NULL;
+ } /* end if */
+
+ /* Free local heap data block */
+ dblk = H5FL_FREE(H5HL_dblk_t, dblk);
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5HL_dblk_dest() */
+
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