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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: H5Ochunk.c
*
* Purpose: Object header chunk routines.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Omodule.h" /* This source code file is part of the H5O module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Opkg.h" /* Object headers */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/* Declare the free list for H5O_chunk_proxy_t's */
H5FL_DEFINE(H5O_chunk_proxy_t);
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5O__chunk_add
*
* Purpose: Add new chunk for object header to metadata cache
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5O__chunk_add(H5F_t *f, H5O_t *oh, unsigned idx, unsigned cont_chunkno)
{
H5O_chunk_proxy_t *chk_proxy = NULL; /* Proxy for chunk, to mark it dirty in the cache */
H5O_chunk_proxy_t *cont_chk_proxy =
NULL; /* Proxy for chunk containing continuation message that points to this chunk, if not chunk 0 */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE_TAG(oh->cache_info.addr)
/* check args */
assert(f);
assert(oh);
assert(idx < oh->nchunks);
assert(idx > 0);
/* Allocate space for the object header data structure */
if (NULL == (chk_proxy = H5FL_CALLOC(H5O_chunk_proxy_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
/* Increment reference count on object header */
if (H5O__inc_rc(oh) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTINC, FAIL, "can't increment reference count on object header");
/* Set the values in the chunk proxy */
chk_proxy->f = f;
chk_proxy->oh = oh;
chk_proxy->chunkno = idx;
/* Determine the parent of the chunk */
if (cont_chunkno != 0) {
if (NULL == (cont_chk_proxy = H5O__chunk_protect(f, oh, cont_chunkno)))
HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header chunk");
chk_proxy->fd_parent = cont_chk_proxy;
} /* end else */
/* Insert the chunk proxy into the cache */
if (H5AC_insert_entry(f, H5AC_OHDR_CHK, oh->chunk[idx].addr, chk_proxy, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTINSERT, FAIL, "unable to cache object header chunk");
chk_proxy = NULL;
done:
/* Cleanup on failure */
if (ret_value < 0)
if (chk_proxy && H5O__chunk_dest(chk_proxy) < 0)
HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "unable to destroy object header chunk");
/* Release resources */
if (cont_chk_proxy)
if (H5O__chunk_unprotect(f, cont_chk_proxy, FALSE) < 0)
HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to unprotect object header chunk");
FUNC_LEAVE_NOAPI_TAG(ret_value)
} /* end H5O__chunk_add() */
/*-------------------------------------------------------------------------
* Function: H5O__chunk_protect
*
* Purpose: Protect an object header chunk for modifications
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
H5O_chunk_proxy_t *
H5O__chunk_protect(H5F_t *f, H5O_t *oh, unsigned idx)
{
H5O_chunk_proxy_t *chk_proxy = NULL; /* Proxy for protected chunk */
H5O_chunk_proxy_t *ret_value = NULL; /* Return value */
FUNC_ENTER_PACKAGE_TAG(oh->cache_info.addr)
/* check args */
assert(f);
assert(oh);
assert(idx < oh->nchunks);
/* Check for protecting first chunk */
if (0 == idx) {
/* Create new "fake" chunk proxy for first chunk */
/* (since the first chunk is already handled by the H5O_t object) */
if (NULL == (chk_proxy = H5FL_CALLOC(H5O_chunk_proxy_t)))
HGOTO_ERROR(H5E_OHDR, H5E_CANTALLOC, NULL, "memory allocation failed");
/* Increment reference count on object header */
if (H5O__inc_rc(oh) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTINC, NULL, "can't increment reference count on object header");
/* Set chunk proxy fields */
chk_proxy->f = f;
chk_proxy->oh = oh;
chk_proxy->chunkno = idx;
} /* end if */
else {
H5O_chk_cache_ud_t chk_udata; /* User data for loading chunk */
/* Construct the user data for protecting chunk proxy */
/* (and _not_ decoding it) */
memset(&chk_udata, 0, sizeof(chk_udata));
chk_udata.oh = oh;
chk_udata.chunkno = idx;
chk_udata.size = oh->chunk[idx].size;
/* Get the chunk proxy */
if (NULL == (chk_proxy = (H5O_chunk_proxy_t *)H5AC_protect(f, H5AC_OHDR_CHK, oh->chunk[idx].addr,
&chk_udata, H5AC__NO_FLAGS_SET)))
HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, NULL, "unable to load object header chunk");
/* Sanity check */
assert(chk_proxy->oh == oh);
assert(chk_proxy->chunkno == idx);
} /* end else */
/* Set return value */
ret_value = chk_proxy;
done:
/* Cleanup on error */
if (!ret_value)
if (0 == idx && chk_proxy && H5O__chunk_dest(chk_proxy) < 0)
HDONE_ERROR(H5E_OHDR, H5E_CANTRELEASE, NULL, "unable to destroy object header chunk");
FUNC_LEAVE_NOAPI_TAG(ret_value)
} /* end H5O__chunk_protect() */
/*-------------------------------------------------------------------------
* Function: H5O__chunk_unprotect
*
* Purpose: Unprotect an object header chunk after modifications
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5O__chunk_unprotect(H5F_t *f, H5O_chunk_proxy_t *chk_proxy, hbool_t dirtied)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* check args */
assert(f);
assert(chk_proxy);
/* Check for releasing first chunk */
if (0 == chk_proxy->chunkno) {
/* Check for dirtying the first chunk */
if (dirtied) {
/* Mark object header as dirty in cache */
if (H5AC_mark_entry_dirty(chk_proxy->oh) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTMARKDIRTY, FAIL, "unable to mark object header as dirty");
} /* end else/if */
/* Decrement reference count of object header */
if (H5O__dec_rc(chk_proxy->oh) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTDEC, FAIL, "can't decrement reference count on object header");
/* Free fake chunk proxy */
chk_proxy = H5FL_FREE(H5O_chunk_proxy_t, chk_proxy);
} /* end if */
else {
/* Release the chunk proxy from the cache, possibly marking it dirty */
if (H5AC_unprotect(f, H5AC_OHDR_CHK, chk_proxy->oh->chunk[chk_proxy->chunkno].addr, chk_proxy,
(dirtied ? H5AC__DIRTIED_FLAG : H5AC__NO_FLAGS_SET)) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header chunk");
} /* end else */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O__chunk_unprotect() */
/*-------------------------------------------------------------------------
* Function: H5O__chunk_resize
*
* Purpose: Resize an object header chunk
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5O__chunk_resize(H5O_t *oh, H5O_chunk_proxy_t *chk_proxy)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* check args */
assert(oh);
assert(chk_proxy);
/* Check for resizing first chunk */
if (0 == chk_proxy->chunkno) {
/* Resize object header in cache */
if (H5AC_resize_entry(oh, oh->chunk[0].size) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTRESIZE, FAIL, "unable to resize chunk in cache");
} /* end if */
else {
/* Resize chunk in cache */
if (H5AC_resize_entry(chk_proxy, oh->chunk[chk_proxy->chunkno].size) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTRESIZE, FAIL, "unable to resize chunk in cache");
} /* end else */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5O__chunk_resize() */
/*-------------------------------------------------------------------------
* Function: H5O__chunk_update_idx
*
* Purpose: Update the chunk index for a chunk proxy
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5O__chunk_update_idx(H5F_t *f, H5O_t *oh, unsigned idx)
{
H5O_chunk_proxy_t *chk_proxy = NULL; /* Proxy for chunk, to mark it dirty in the cache */
H5O_chk_cache_ud_t chk_udata; /* User data for loading chunk */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE_TAG(oh->cache_info.addr)
/* check args */
assert(f);
assert(oh);
assert(idx < oh->nchunks);
assert(idx > 0);
/* Construct the user data for protecting chunk proxy */
/* (and _not_ decoding it) */
memset(&chk_udata, 0, sizeof(chk_udata));
chk_udata.oh = oh;
chk_udata.chunkno = idx;
chk_udata.size = oh->chunk[idx].size;
/* Get the chunk proxy */
if (NULL == (chk_proxy = (H5O_chunk_proxy_t *)H5AC_protect(f, H5AC_OHDR_CHK, oh->chunk[idx].addr,
&chk_udata, H5AC__NO_FLAGS_SET)))
HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header chunk");
/* Update index for chunk proxy in cache */
chk_proxy->chunkno = idx;
/* Release the chunk proxy from the cache, marking it deleted */
if (H5AC_unprotect(f, H5AC_OHDR_CHK, oh->chunk[idx].addr, chk_proxy, H5AC__DIRTIED_FLAG) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header chunk");
done:
FUNC_LEAVE_NOAPI_TAG(ret_value)
} /* end H5O__chunk_update_idx() */
/*-------------------------------------------------------------------------
* Function: H5O__chunk_delete
*
* Purpose: Notify metadata cache that a chunk has been deleted
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5O__chunk_delete(H5F_t *f, H5O_t *oh, unsigned idx)
{
H5O_chunk_proxy_t *chk_proxy = NULL; /* Proxy for chunk, to mark it dirty in the cache */
unsigned cache_flags = H5AC__DELETED_FLAG; /* Flags for unprotecting proxy */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE_TAG(oh->cache_info.addr)
/* check args */
assert(f);
assert(oh);
assert(idx < oh->nchunks);
assert(idx > 0);
/* Get the chunk proxy */
if (NULL == (chk_proxy = H5O__chunk_protect(f, oh, idx)))
HGOTO_ERROR(H5E_OHDR, H5E_CANTPROTECT, FAIL, "unable to load object header chunk");
/* Only free file space if not doing SWMR writes */
if (!oh->swmr_write)
cache_flags |= H5AC__DIRTIED_FLAG | H5AC__FREE_FILE_SPACE_FLAG;
done:
/* Release the chunk proxy from the cache, marking it deleted */
if (chk_proxy && H5AC_unprotect(f, H5AC_OHDR_CHK, oh->chunk[idx].addr, chk_proxy, cache_flags) < 0)
HDONE_ERROR(H5E_OHDR, H5E_CANTUNPROTECT, FAIL, "unable to release object header chunk");
FUNC_LEAVE_NOAPI_TAG(ret_value)
} /* end H5O__chunk_delete() */
/*-------------------------------------------------------------------------
* Function: H5O__chunk_dest
*
* Purpose: Destroy a chunk proxy object
*
* Return: SUCCEED/FAIL
*
*-------------------------------------------------------------------------
*/
herr_t
H5O__chunk_dest(H5O_chunk_proxy_t *chk_proxy)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_PACKAGE
/* Check arguments */
assert(chk_proxy);
/* Decrement reference count of object header */
if (H5O__dec_rc(chk_proxy->oh) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTDEC, FAIL, "can't decrement reference count on object header");
done:
/* Release the chunk proxy object */
chk_proxy = H5FL_FREE(H5O_chunk_proxy_t, chk_proxy);
FUNC_LEAVE_NOAPI(ret_value)
} /* H5O__chunk_dest() */
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