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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: H5Dproxy.c
* May 19 2009
* Quincey Koziol <koziol@hdfgroup.org>
*
* Purpose: Implement dataset's metadata cache proxy cache methods.
*
* Note: Chunk proxies exist only to make integrating the chunk
* cache with the metadata cache's flush dependencies
* easier and less coupled than directly tying them
* together.
*
* Chunk proxies never exist on disk (hence their lack of
* a 'load' callback) and their 'flush' callback just
* triggers a flush of the chunk it's a a proxy for.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#define H5D_PACKAGE /*suppress error about including H5Dpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Dpkg.h" /* Dataset functions */
#include "H5Eprivate.h" /* Error handling */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/* Local routines */
static herr_t H5D_chunk_proxy_destroy(H5D_chunk_proxy_t *proxy);
/* Metadata cache (H5AC) callbacks */
static H5D_chunk_proxy_t *H5D_cache_proxy_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void *udata, void *udata2);
static herr_t H5D_cache_proxy_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr, H5D_chunk_proxy_t *proxy, unsigned UNUSED * flags_ptr);
static herr_t H5D_cache_proxy_dest(H5F_t *f, H5D_chunk_proxy_t *proxy);
static herr_t H5D_cache_proxy_clear(H5F_t *f, H5D_chunk_proxy_t *proxy, hbool_t destroy);
static herr_t H5D_cache_proxy_size(const H5F_t *f, const H5D_chunk_proxy_t *proxy, size_t *size_ptr);
/*********************/
/* Package Variables */
/*********************/
/* H5D chunk proxy inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_CHUNK_PROXY[1] = {{
H5AC_CHUNK_PROXY_ID,
(H5AC_load_func_t)H5D_cache_proxy_load,
(H5AC_flush_func_t)H5D_cache_proxy_flush,
(H5AC_dest_func_t)H5D_cache_proxy_dest,
(H5AC_clear_func_t)H5D_cache_proxy_clear,
(H5AC_notify_func_t)NULL,
(H5AC_size_func_t)H5D_cache_proxy_size,
}};
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/* Declare a free list to manage H5D_chunk_proxy_t objects */
H5FL_DEFINE_STATIC(H5D_chunk_proxy_t);
/*-------------------------------------------------------------------------
* Function: H5D_cache_proxy_load
*
* Purpose: Loads a chunk proxy from the disk.
*
* Note: This routine should never be invoked
*
* Return: Success: Pointer to a new chunk proxy
* Failure: NULL
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* May 21 2009
*
*-------------------------------------------------------------------------
*/
static H5D_chunk_proxy_t *
H5D_cache_proxy_load(H5F_t UNUSED *f, hid_t UNUSED dxpl_id, haddr_t UNUSED addr,
const void UNUSED *udata1, void UNUSED *udata2)
{
H5D_chunk_proxy_t *ret_value; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5D_cache_proxy_load)
/* This routine should never be invoked! */
HDassert(0 && "H5D_cache_proxy_load called!?!");
HGOTO_ERROR(H5E_DATASET, H5E_CANTLOAD, NULL, "unable to load chunk proxy")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5D_cache_proxy_load() */
/*-------------------------------------------------------------------------
* Function: H5D_cache_proxy_flush
*
* Purpose: Proxy for flushing a chunk in chunk cache under control
* of the metadata cache.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* May 19 2009
*
*-------------------------------------------------------------------------
*/
static herr_t
H5D_cache_proxy_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr,
H5D_chunk_proxy_t *proxy, unsigned UNUSED * flags_ptr)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5D_cache_proxy_flush)
#ifdef QAK
HDfprintf(stderr, "%s: Flushing chunk proxy, addr = %a, destroy = %u\n", FUNC, addr, (unsigned)destroy);
#endif /* QAK */
/* check arguments */
HDassert(f);
HDassert(H5F_addr_defined(addr));
HDassert(proxy);
if(proxy->cache_info.is_dirty) {
H5D_dxpl_cache_t _dxpl_cache; /* Data transfer property cache buffer */
H5D_dxpl_cache_t *dxpl_cache = &_dxpl_cache; /* Data transfer property cache */
/* Fill the DXPL cache values for later use */
if(H5D_get_dxpl_cache(dxpl_id, &dxpl_cache) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "can't fill dxpl cache")
/* Flush the chunk for the proxy */
/* (This must be safe from actually performing I/O when the chunk is
* clean - QAK, 5/21/2009)
*/
if(H5D_chunk_flush_entry(proxy->dset, dxpl_id, dxpl_cache, proxy->ent, FALSE) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTFLUSH, FAIL, "can't flush chunk via proxy")
/* Mark the chunk proxy as clean now */
proxy->cache_info.is_dirty = FALSE;
} /* end if */
if(destroy)
if(H5D_cache_proxy_dest(f, proxy) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to destroy chunk proxy")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5D_cache_proxy_flush() */
/*-------------------------------------------------------------------------
* Function: H5D_cache_proxy_dest
*
* Purpose: Destroys a chunk proxy in memory.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* May 19 2009
*
*-------------------------------------------------------------------------
*/
static herr_t
H5D_cache_proxy_dest(H5F_t UNUSED *f, H5D_chunk_proxy_t *proxy)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5D_cache_proxy_dest)
/*
* Check arguments.
*/
HDassert(proxy);
/* Free the chunk proxy itself */
if(H5D_chunk_proxy_destroy(proxy) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to destroy chunk proxy")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_cache_proxy_dest() */
/*-------------------------------------------------------------------------
* Function: H5D_cache_proxy_clear
*
* Purpose: Mark a chunk proxy in memory as non-dirty.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* May 19 2009
*
*-------------------------------------------------------------------------
*/
static herr_t
H5D_cache_proxy_clear(H5F_t *f, H5D_chunk_proxy_t *proxy, hbool_t destroy)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5D_cache_proxy_clear)
/*
* Check arguments.
*/
HDassert(proxy);
/* Reset the dirty flag. */
proxy->cache_info.is_dirty = FALSE;
if(destroy)
if(H5D_cache_proxy_dest(f, proxy) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to destroy chunk proxy")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_cache_proxy_clear() */
/*-------------------------------------------------------------------------
* Function: H5D_cache_proxy_size
*
* Purpose: Compute the size in bytes of a chunk proxy
* on disk, and return it in *size_ptr. On failure,
* the value of *size_ptr is undefined.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* May 19 2009
*
*-------------------------------------------------------------------------
*/
static herr_t
H5D_cache_proxy_size(const H5F_t UNUSED *f, const H5D_chunk_proxy_t UNUSED *proxy,
size_t *size_ptr)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_cache_proxy_size)
/* check arguments */
HDassert(f);
HDassert(proxy);
HDassert(size_ptr);
/* Chunk proxies are represented as 1 byte in cache */
/* (would be 0 bytes, but cache won't allow it currently -QAK, 5/19/09) */
*size_ptr = 1;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5D_cache_proxy_size() */
/*-------------------------------------------------------------------------
* Function: H5D_chunk_proxy_create
*
* Purpose: Create a proxy for the chunk and insert it into the metadata cache.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, May 19, 2009
*
*-------------------------------------------------------------------------
*/
herr_t
H5D_chunk_proxy_create(H5D_t *dset, hid_t dxpl_id, H5D_chunk_common_ud_t *udata,
H5D_rdcc_ent_t *ent)
{
H5D_chunk_proxy_t *proxy = NULL; /* Chunk proxy */
H5D_chk_idx_info_t idx_info; /* Chunked index info */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5D_chunk_proxy_create)
HDassert(dset);
HDassert(ent);
/* Get the chunk proxy address & adjust for next address */
ent->proxy_addr = H5F_GET_NEXT_PROXY_ADDR(dset->oloc.file);
#ifdef QAK
HDfprintf(stderr, "%s: ent->proxy_addr = %a\n", FUNC, ent->proxy_addr);
#endif /* QAK */
/* Create chunk proxy object & initialize fields to zero */
if(NULL == (proxy = H5FL_CALLOC(H5D_chunk_proxy_t)))
HGOTO_ERROR(H5E_DATASET, H5E_NOSPACE, FAIL, "can't allocate chunk proxy")
ent->proxy = proxy;
/* Point chunk proxy to chunk cache entry it's representing and dataset
* it's related to
*/
proxy->dset = dset;
proxy->ent = ent;
/* Insert chunk proxy into metadata cache, pinned */
if(H5AC_set(dset->oloc.file, dxpl_id, H5AC_CHUNK_PROXY, ent->proxy_addr, proxy, H5AC__PIN_ENTRY_FLAG) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't add chunk proxy to cache")
/* Compose chunked index info struct */
idx_info.f = dset->oloc.file;
idx_info.dxpl_id = dxpl_id;
idx_info.pline = &(dset->shared->dcpl_cache.pline);
idx_info.layout = &(dset->shared->layout);
/* Create a flush dependency between the proxy (as the child) and the
* metadata object in the index (as the parent).
*/
if((dset->shared->layout.u.chunk.ops->depend)(&idx_info, udata, (H5AC_info_t *)proxy) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTDEPEND, FAIL, "unable to create flush dependency for chunk proxy")
done:
if(ret_value < 0) {
if(proxy)
proxy = H5FL_FREE(H5D_chunk_proxy_t, proxy);
ent->proxy_addr = HADDR_UNDEF;
ent->proxy = NULL;
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_chunk_proxy_create() */
/*-------------------------------------------------------------------------
* Function: H5D_chunk_proxy_remove
*
* Purpose: Remove a proxy for the chunk from the metadata cache.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, May 19, 2009
*
*-------------------------------------------------------------------------
*/
herr_t
H5D_chunk_proxy_remove(const H5D_t *dset, hid_t dxpl_id, H5D_rdcc_ent_t *ent)
{
H5D_chk_idx_info_t idx_info; /* Chunked index info */
H5D_chunk_common_ud_t udata; /* User-data for chunk */
H5D_chunk_proxy_t *proxy = NULL; /* Chunk proxy */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5D_chunk_proxy_remove)
HDassert(dset);
HDassert(ent);
#ifdef QAK
HDfprintf(stderr, "%s: ent->proxy_addr = %a\n", FUNC, ent->proxy_addr);
#endif /* QAK */
/* Protect the chunk proxy */
if(NULL == (proxy = (H5D_chunk_proxy_t *)H5AC_protect(dset->oloc.file, dxpl_id, H5AC_CHUNK_PROXY, ent->proxy_addr, NULL, NULL, H5AC_WRITE)))
HGOTO_ERROR(H5E_DATASET, H5E_CANTPROTECT, FAIL, "unable to protect chunk proxy");
/* Compose chunked index info struct */
idx_info.f = dset->oloc.file;
idx_info.dxpl_id = dxpl_id;
idx_info.pline = &(dset->shared->dcpl_cache.pline);
idx_info.layout = &(dset->shared->layout);
/* Compose user-data for chunk */
udata.mesg = &(dset->shared->layout);
udata.offset = ent->offset;
/* Remove flush dependency between the proxy (as the child) and the
* metadata object in the index (as the parent).
*/
if((dset->shared->layout.u.chunk.ops->undepend)(&idx_info, &udata, (H5AC_info_t *)proxy) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTDEPEND, FAIL, "unable to create flush dependency for chunk proxy")
/* Unpin & delete chunk proxy from metadata cache, taking ownership of it */
if(H5AC_unprotect(dset->oloc.file, dxpl_id, H5AC_CHUNK_PROXY, ent->proxy_addr, proxy, (H5AC__UNPIN_ENTRY_FLAG | H5AC__DELETED_FLAG | H5AC__TAKE_OWNERSHIP_FLAG)) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTUNPROTECT, FAIL, "unable to release chunk proxy");
/* Reset information in chunk cache entry */
ent->proxy_addr = HADDR_UNDEF;
ent->proxy = NULL;
/* Release the chunk proxy object */
if(H5D_chunk_proxy_destroy(proxy) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to destroy chunk proxy")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_chunk_proxy_remove() */
/*-------------------------------------------------------------------------
* Function: H5D_chunk_proxy_mark
*
* Purpose: Mark a proxy for the chunk in the metadata cache as clean or
* dirty.
*
* Note: Currently, this code does not mark a chunk proxy as clean in
* the metadata cache. Doing so would require that this routine
* be invoked collectively when operating in parallel I/O mode
* and it's possible that this routine can be invoked during
* indepedent raw data I/O.
*
* So, the chunk proxy's dirty state in the metadata cache may
* be out of sync with the chunk itself, but only in the direction
* of being dirty when the chunk itself is clean. We'll call
* call the 'flush' callback for the chunk proxies more often
* than necessary, but as long as the chunk entry flushing
* routine doesn't actually flush the chunk when it's clean,
* there won't be too much overhead. - QAK, 5/21/2009
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, May 19, 2009
*
*-------------------------------------------------------------------------
*/
herr_t
H5D_chunk_proxy_mark(const H5D_t *dset, hid_t dxpl_id, const H5D_rdcc_ent_t *ent,
hbool_t dirty)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5D_chunk_proxy_mark)
HDassert(dset);
HDassert(ent);
#ifdef QAK
HDfprintf(stderr, "%s: ent->proxy_addr = %a, dirty = %t\n", FUNC, ent->proxy_addr, dirty);
#endif /* QAK */
/* Check whether to mark the proxy as dirty */
if(dirty) {
if(H5AC_mark_pinned_or_protected_entry_dirty(dset->oloc.file, ent->proxy) < 0)
HGOTO_ERROR(H5E_DATASET, H5E_CANTMARKDIRTY, FAIL, "can't mark chunk proxy entry in metadata cache as dirty")
} /* end if */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5D_chunk_proxy_mark() */
/*-------------------------------------------------------------------------
* Function: H5D_chunk_proxy_destroy
*
* Purpose: Destroy a chunk proxy object
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, May 21, 2009
*
*-------------------------------------------------------------------------
*/
static herr_t
H5D_chunk_proxy_destroy(H5D_chunk_proxy_t *proxy)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5D_chunk_proxy_destroy)
HDassert(proxy);
/* Free the chunk proxy object */
proxy->dset = NULL;
proxy->ent = NULL;
proxy = H5FL_FREE(H5D_chunk_proxy_t, proxy);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5D_chunk_proxy_destroy() */
|