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diff --git a/src/H5MFsection.c b/src/H5MFsection.c
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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. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Programmer: Quincey Koziol <koziol@hdfgroup.org>
+ * Tuesday, January 8, 2008
+ *
+ * Purpose: Free space section callbacks for file.
+ *
+ */
+
+/****************/
+/* Module Setup */
+/****************/
+
+#define H5F_PACKAGE /*suppress error about including H5Fpkg */
+#define H5MF_PACKAGE /*suppress error about including H5MFpkg */
+
+
+/***********/
+/* Headers */
+/***********/
+#include "H5private.h" /* Generic Functions */
+#include "H5Eprivate.h" /* Error handling */
+#include "H5Fpkg.h" /* File access */
+#include "H5MFpkg.h" /* File memory management */
+
+
+/****************/
+/* Local Macros */
+/****************/
+
+
+/******************/
+/* Local Typedefs */
+/******************/
+
+
+/********************/
+/* Package Typedefs */
+/********************/
+
+
+/********************/
+/* Local Prototypes */
+/********************/
+
+/* 'simple' section callbacks */
+static H5FS_section_info_t *H5MF_sect_simple_deserialize(const H5FS_section_class_t *cls,
+ hid_t dxpl_id, const uint8_t *buf, haddr_t sect_addr, hsize_t sect_size,
+ unsigned *des_flags);
+static htri_t H5MF_sect_simple_can_merge(const H5FS_section_info_t *sect1,
+ const H5FS_section_info_t *sect2, void *udata);
+static herr_t H5MF_sect_simple_merge(H5FS_section_info_t *sect1,
+ H5FS_section_info_t *sect2, void *udata);
+static herr_t H5MF_sect_simple_valid(const H5FS_section_class_t *cls,
+ const H5FS_section_info_t *sect);
+static H5FS_section_info_t *H5MF_sect_simple_split(H5FS_section_info_t *sect,
+ hsize_t frag_size);
+
+/*********************/
+/* Package Variables */
+/*********************/
+
+/* Class info for "simple" free space sections */
+H5FS_section_class_t H5MF_FSPACE_SECT_CLS_SIMPLE[1] = {{
+ /* Class variables */
+ H5MF_FSPACE_SECT_SIMPLE, /* Section type */
+ 0, /* Extra serialized size */
+ H5FS_CLS_MERGE_SYM | H5FS_CLS_ADJUST_OK, /* Class flags */
+ NULL, /* Class private info */
+
+ /* Class methods */
+ NULL, /* Initialize section class */
+ NULL, /* Terminate section class */
+
+ /* Object methods */
+ NULL, /* Add section */
+ NULL, /* Serialize section */
+ H5MF_sect_simple_deserialize, /* Deserialize section */
+ H5MF_sect_simple_can_merge, /* Can sections merge? */
+ H5MF_sect_simple_merge, /* Merge sections */
+ H5MF_sect_simple_can_shrink, /* Can section shrink container?*/
+ H5MF_sect_simple_shrink, /* Shrink container w/section */
+ H5MF_sect_simple_free, /* Free section */
+ H5MF_sect_simple_valid, /* Check validity of section */
+ H5MF_sect_simple_split, /* Split section node for alignment */
+ NULL, /* Dump debugging for section */
+}};
+
+
+/*****************************/
+/* Library Private Variables */
+/*****************************/
+
+
+/*******************/
+/* Local Variables */
+/*******************/
+
+/* Declare a free list to manage the H5MF_free_section_t struct */
+H5FL_DEFINE(H5MF_free_section_t);
+
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_new
+ *
+ * Purpose: Create a new 'simple' section and return it to the caller
+ *
+ * Return: Pointer to new section on success/NULL on failure
+ *
+ * Programmer: Quincey Koziol
+ * koziol@hdfgroup.org
+ * January 8 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+H5MF_free_section_t *
+H5MF_sect_simple_new(haddr_t sect_off, hsize_t sect_size)
+{
+ H5MF_free_section_t *sect = NULL; /* 'Simple' free space section to add */
+ H5MF_free_section_t *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5MF_sect_simple_new)
+
+ /* Check arguments. */
+ HDassert(sect_size);
+
+ /* Create free space section node */
+ if(NULL == (sect = H5FL_MALLOC(H5MF_free_section_t)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for direct block free list section")
+
+ /* Set the information passed in */
+ sect->sect_info.addr = sect_off;
+ sect->sect_info.size = sect_size;
+
+ /* Set the section's class & state */
+ sect->sect_info.type = H5MF_FSPACE_SECT_SIMPLE;
+ sect->sect_info.state = H5FS_SECT_LIVE;
+
+ /* Set return value */
+ ret_value = sect;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5MF_sect_simple_new() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_deserialize
+ *
+ * Purpose: Deserialize a buffer into a "live" single section
+ *
+ * Return: Success: non-negative
+ * Failure: negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, January 8, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+static H5FS_section_info_t *
+H5MF_sect_simple_deserialize(const H5FS_section_class_t UNUSED *cls,
+ hid_t UNUSED dxpl_id, const uint8_t UNUSED *buf, haddr_t sect_addr,
+ hsize_t sect_size, unsigned UNUSED *des_flags)
+{
+ H5MF_free_section_t *sect; /* New section */
+ H5FS_section_info_t *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5MF_sect_simple_deserialize)
+
+ /* Check arguments. */
+ HDassert(H5F_addr_defined(sect_addr));
+ HDassert(sect_size);
+
+ /* Create free space section for block */
+ if(NULL == (sect = H5MF_sect_simple_new(sect_addr, sect_size)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, NULL, "can't initialize free space section")
+
+ /* Set return value */
+ ret_value = (H5FS_section_info_t *)sect;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5MF_sect_simple_deserialize() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_can_merge
+ *
+ * Purpose: Can two sections of this type merge?
+ *
+ * Note: Second section must be "after" first section
+ *
+ * Return: Success: non-negative (TRUE/FALSE)
+ * Failure: negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, January 8, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+static htri_t
+H5MF_sect_simple_can_merge(const H5FS_section_info_t *_sect1,
+ const H5FS_section_info_t *_sect2, void UNUSED *_udata)
+{
+ const H5MF_free_section_t *sect1 = (const H5MF_free_section_t *)_sect1; /* File free section */
+ const H5MF_free_section_t *sect2 = (const H5MF_free_section_t *)_sect2; /* File free section */
+ htri_t ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5MF_sect_simple_can_merge)
+
+ /* Check arguments. */
+ HDassert(sect1);
+ HDassert(sect2);
+ HDassert(sect1->sect_info.type == sect2->sect_info.type); /* Checks "MERGE_SYM" flag */
+ HDassert(H5F_addr_lt(sect1->sect_info.addr, sect2->sect_info.addr));
+
+ /* Check if second section adjoins first section */
+ ret_value = H5F_addr_eq(sect1->sect_info.addr + sect1->sect_info.size, sect2->sect_info.addr);
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5MF_sect_simple_can_merge() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_merge
+ *
+ * Purpose: Merge two sections of this type
+ *
+ * Note: Second section always merges into first node
+ *
+ * Return: Success: non-negative
+ * Failure: negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, January 8, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5MF_sect_simple_merge(H5FS_section_info_t *_sect1, H5FS_section_info_t *_sect2,
+ void UNUSED *_udata)
+{
+ H5MF_free_section_t *sect1 = (H5MF_free_section_t *)_sect1; /* File free section */
+ H5MF_free_section_t *sect2 = (H5MF_free_section_t *)_sect2; /* File free section */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5MF_sect_simple_merge)
+
+ /* Check arguments. */
+ HDassert(sect1);
+ HDassert(sect1->sect_info.type == H5MF_FSPACE_SECT_SIMPLE);
+ HDassert(sect2);
+ HDassert(sect2->sect_info.type == H5MF_FSPACE_SECT_SIMPLE);
+ HDassert(H5F_addr_eq(sect1->sect_info.addr + sect1->sect_info.size, sect2->sect_info.addr));
+
+ /* Add second section's size to first section */
+ sect1->sect_info.size += sect2->sect_info.size;
+
+ /* Get rid of second section */
+ if(H5MF_sect_simple_free((H5FS_section_info_t *)sect2) < 0)
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free section node")
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5MF_sect_simple_merge() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_can_shrink
+ *
+ * Purpose: Can this section shrink the container?
+ *
+ * Return: Success: non-negative (TRUE/FALSE)
+ * Failure: negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, January 8, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+htri_t
+H5MF_sect_simple_can_shrink(const H5FS_section_info_t *_sect, void *_udata)
+{
+ const H5MF_free_section_t *sect = (const H5MF_free_section_t *)_sect; /* File free section */
+ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */
+ haddr_t eoa; /* End of address space in the file */
+ haddr_t end; /* End of section to extend */
+ htri_t ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5MF_sect_simple_can_shrink)
+
+ /* Check arguments. */
+ HDassert(sect);
+ HDassert(udata);
+ HDassert(udata->f);
+
+ /* Retrieve the end of the file's address space */
+ if(HADDR_UNDEF == (eoa = H5FD_get_eoa(udata->f->shared->lf, H5FD_MEM_DEFAULT)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed")
+
+ /* Compute address of end of section to check */
+ end = sect->sect_info.addr + sect->sect_info.size;
+
+ /* Check if the section is exactly at the end of the allocated space in the file */
+ if(H5F_addr_eq(end, eoa)) {
+ /* Set the shrinking type */
+ udata->shrink = H5MF_SHRINK_EOA;
+#ifdef H5MF_ALLOC_DEBUG_MORE
+HDfprintf(stderr, "%s: section {%a, %Hu}, shrinks file, eoa = %a\n", FUNC, sect->sect_info.addr, sect->sect_info.size, eoa);
+#endif /* H5MF_ALLOC_DEBUG_MORE */
+
+ /* Indicate shrinking can occur */
+ HGOTO_DONE(TRUE)
+ } /* end if */
+ else {
+ /* Check if this section is allowed to merge with metadata aggregation block */
+ if(udata->f->shared->fs_aggr_merge[udata->alloc_type] & H5F_FS_MERGE_METADATA) {
+ htri_t status; /* Status from aggregator adjoin */
+
+ /* See if section can absorb the aggregator & vice versa */
+ if((status = H5MF_aggr_can_absorb(udata->f, &(udata->f->shared->meta_aggr), sect, &(udata->shrink))) < 0)
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTMERGE, FAIL, "error merging section with aggregation block")
+ else if(status > 0) {
+ /* Set the aggregator to operate on */
+ udata->aggr = &(udata->f->shared->meta_aggr);
+#ifdef H5MF_ALLOC_DEBUG_MORE
+HDfprintf(stderr, "%s: section {%a, %Hu}, adjoins metadata aggregator\n", FUNC, sect->sect_info.addr, sect->sect_info.size);
+#endif /* H5MF_ALLOC_DEBUG_MORE */
+
+ /* Indicate shrinking can occur */
+ HGOTO_DONE(TRUE)
+ } /* end if */
+ } /* end if */
+
+ /* Check if this section is allowed to merge with small 'raw' aggregation block */
+ if(udata->f->shared->fs_aggr_merge[udata->alloc_type] & H5F_FS_MERGE_RAWDATA) {
+ htri_t status; /* Status from aggregator adjoin */
+
+ /* See if section can absorb the aggregator & vice versa */
+ if((status = H5MF_aggr_can_absorb(udata->f, &(udata->f->shared->sdata_aggr), sect, &(udata->shrink))) < 0)
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTMERGE, FAIL, "error merging section with aggregation block")
+ else if(status > 0) {
+ /* Set the aggregator to operate on */
+ udata->aggr = &(udata->f->shared->sdata_aggr);
+#ifdef H5MF_ALLOC_DEBUG_MORE
+HDfprintf(stderr, "%s: section {%a, %Hu}, adjoins small data aggregator\n", FUNC, sect->sect_info.addr, sect->sect_info.size);
+#endif /* H5MF_ALLOC_DEBUG_MORE */
+
+ /* Indicate shrinking can occur */
+ HGOTO_DONE(TRUE)
+ } /* end if */
+ } /* end if */
+ } /* end else */
+
+ /* Set return value */
+ ret_value = FALSE;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5MF_sect_simple_can_shrink() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_shrink
+ *
+ * Purpose: Shrink container with section
+ *
+ * Return: Success: non-negative
+ * Failure: negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, January 8, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5MF_sect_simple_shrink(H5FS_section_info_t **_sect, void *_udata)
+{
+ H5MF_free_section_t **sect = (H5MF_free_section_t **)_sect; /* File free section */
+ H5MF_sect_ud_t *udata = (H5MF_sect_ud_t *)_udata; /* User data for callback */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5MF_sect_simple_shrink)
+
+ /* Check arguments. */
+ HDassert(sect);
+ HDassert(udata);
+ HDassert(udata->f);
+
+ /* Check for shrinking file */
+ if(H5MF_SHRINK_EOA == udata->shrink) {
+ /* Release section's space at EOA with file driver */
+ if(H5FD_free(udata->f->shared->lf, udata->dxpl_id, H5FD_MEM_DEFAULT, (*sect)->sect_info.addr, (*sect)->sect_info.size) < 0)
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTFREE, FAIL, "driver free request failed")
+ } /* end if */
+ else {
+ /* Sanity check */
+ HDassert(udata->aggr);
+
+ /* Absorb the section into the aggregator or vice versa */
+ if(H5MF_aggr_absorb(udata->f, udata->aggr, *sect, udata->allow_sect_absorb) < 0)
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTMERGE, FAIL, "can't absorb section into aggregator or vice versa")
+ } /* end else */
+
+ /* Check for freeing section */
+ if(udata->shrink != H5MF_SHRINK_SECT_ABSORB_AGGR) {
+ /* Free section */
+ if(H5MF_sect_simple_free((H5FS_section_info_t *)*sect) < 0)
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTRELEASE, FAIL, "can't free simple section node")
+
+ /* Mark section as freed, for free space manager */
+ *sect = NULL;
+ } /* end if */
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5MF_sect_simple_shrink() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_free
+ *
+ * Purpose: Free a 'single' section node
+ *
+ * Return: Success: non-negative
+ * Failure: negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, January 8, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5MF_sect_simple_free(H5FS_section_info_t *_sect)
+{
+ H5MF_free_section_t *sect = (H5MF_free_section_t *)_sect; /* File free section */
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5MF_sect_simple_free)
+
+ /* Check arguments. */
+ HDassert(sect);
+
+ /* Release the section */
+ H5FL_FREE(H5MF_free_section_t, sect);
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* H5MF_sect_simple_free() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_valid
+ *
+ * Purpose: Check the validity of a section
+ *
+ * Return: Success: non-negative
+ * Failure: negative
+ *
+ * Programmer: Quincey Koziol
+ * Tuesday, January 8, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5MF_sect_simple_valid(const H5FS_section_class_t UNUSED *cls,
+ const H5FS_section_info_t *_sect)
+{
+ const H5MF_free_section_t *sect = (const H5MF_free_section_t *)_sect; /* File free section */
+
+ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5MF_sect_simple_valid)
+
+ /* Check arguments. */
+ HDassert(sect);
+
+
+ FUNC_LEAVE_NOAPI(SUCCEED)
+} /* H5MF_sect_simple_valid() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5MF_sect_simple_split
+ *
+ * Purpose: Split SECT into 2 sections: fragment for alignment & the aligned section
+ * SECT's addr and size are updated to point to the aligned section
+ *
+ * Return: Success: the fragment for aligning sect
+ * Failure: null
+ *
+ * Programmer: Vailin Choi, July 29, 2008
+ *
+ *-------------------------------------------------------------------------
+ */
+static H5FS_section_info_t *
+H5MF_sect_simple_split(H5FS_section_info_t *sect, hsize_t frag_size)
+{
+ H5MF_free_section_t *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI_NOINIT(H5MF_sect_simple_split)
+
+ /* Allocate space for new section */
+ if(NULL == (ret_value = H5MF_sect_simple_new(sect->addr, frag_size)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, NULL, "can't initialize free space section")
+
+ /* Set new section's info */
+ sect->addr += frag_size;
+ sect->size -= frag_size;
+
+done:
+ FUNC_LEAVE_NOAPI((H5FS_section_info_t *)ret_value)
+} /* end H5MF_sect_simple_split() */
+
+