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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: H5Fsuper_cache.c
* Aug 15 2009
* Quincey Koziol <koziol@hdfgroup.org>
*
* Purpose: Implement file superblock & driver info metadata cache methods.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Fmodule.h" /* This source code file is part of the H5F module */
#define H5G_FRIEND /*suppress error about including H5Gpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fpkg.h" /* File access */
#include "H5FDprivate.h" /* File drivers */
#include "H5FLprivate.h" /* Free Lists */
#include "H5Gpkg.h" /* Groups */
#include "H5Iprivate.h" /* IDs */
#include "H5MMprivate.h" /* Memory management */
#include "H5Pprivate.h" /* Property lists */
#include "H5SMprivate.h" /* Shared Object Header Messages */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/* Metadata cache (H5AC) callbacks */
static herr_t H5F__cache_superblock_get_load_size(const void *udata, size_t *image_len);
static void *H5F__cache_superblock_deserialize(const void *image, size_t len,
void *udata, hbool_t *dirty);
static herr_t H5F__cache_superblock_image_len(const void *thing,
size_t *image_len, hbool_t *compressed_ptr,
size_t *compressed_image_len_ptr);
static herr_t H5F__cache_superblock_pre_serialize(const H5F_t *f,
hid_t dxpl_id, void *thing, haddr_t addr, size_t len,
size_t compressed_len, haddr_t *new_addr, size_t *new_len,
size_t *new_compressed_len, unsigned *flags);
static herr_t H5F__cache_superblock_serialize(const H5F_t *f, void *image, size_t len,
void *thing);
static herr_t H5F__cache_superblock_notify(H5C_notify_action_t action, const H5F_t *f, void *thing, hid_t dxpl_id);
static herr_t H5F__cache_superblock_free_icr(void *thing);
static herr_t H5F__cache_drvrinfo_get_load_size(const void *udata, size_t *image_len);
static void *H5F__cache_drvrinfo_deserialize(const void *image, size_t len,
void *udata, hbool_t *dirty);
static herr_t H5F__cache_drvrinfo_image_len(const void *thing,
size_t *image_len, hbool_t *compressed_ptr,
size_t *compressed_image_len_ptr);
static herr_t H5F__cache_drvrinfo_serialize(const H5F_t *f, void *image, size_t len,
void *thing);
static herr_t H5F__cache_drvrinfo_free_icr(void *thing);
/*********************/
/* Package Variables */
/*********************/
/* H5F superblock inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_SUPERBLOCK[1] = {{
H5AC_SUPERBLOCK_ID, /* Metadata client ID */
"Superblock", /* Metadata client name (for debugging) */
H5FD_MEM_SUPER, /* File space memory type for client */
H5AC__CLASS_SPECULATIVE_LOAD_FLAG, /* Client class behavior flags */
H5F__cache_superblock_get_load_size,/* 'get_load_size' callback */
H5F__cache_superblock_deserialize, /* 'deserialize' callback */
H5F__cache_superblock_image_len, /* 'image_len' callback */
NULL,//H5F__cache_superblock_pre_serialize,/* 'pre_serialize' callback */
H5F__cache_superblock_serialize, /* 'serialize' callback */
H5F__cache_superblock_notify, /* 'notify' callback */
H5F__cache_superblock_free_icr, /* 'free_icr' callback */
NULL, /* 'clear' callback */
NULL, /* 'fsf_size' callback */
}};
/* H5F driver info block inherits cache-like properties from H5AC */
const H5AC_class_t H5AC_DRVRINFO[1] = {{
H5AC_DRVRINFO_ID, /* Metadata client ID */
"Driver info block", /* Metadata client name (for debugging) */
H5FD_MEM_SUPER, /* File space memory type for client */
H5AC__CLASS_SPECULATIVE_LOAD_FLAG, /* Client class behavior flags */
H5F__cache_drvrinfo_get_load_size, /* 'get_load_size' callback */
H5F__cache_drvrinfo_deserialize, /* 'deserialize' callback */
H5F__cache_drvrinfo_image_len, /* 'image_len' callback */
NULL, /* 'pre_serialize' callback */
H5F__cache_drvrinfo_serialize, /* 'serialize' callback */
NULL, /* 'notify' callback */
H5F__cache_drvrinfo_free_icr, /* 'free_icr' callback */
NULL, /* 'clear' callback */
NULL, /* 'fsf_size' callback */
}};
/*****************************/
/* Library Private Variables */
/*****************************/
/* Declare extern the free list to manage the H5F_super_t struct */
H5FL_EXTERN(H5F_super_t);
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5F__cache_superblock_get_load_size
*
* Purpose: Compute the size of the data structure on disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 17, 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_superblock_get_load_size(const void H5_ATTR_UNUSED *udata, size_t *image_len)
{
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(image_len);
/* Set the initial image length size */
*image_len = H5F_SUPERBLOCK_FIXED_SIZE + /* Fixed size of superblock */
H5F_SUPERBLOCK_MINIMAL_VARLEN_SIZE;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5F__cache_superblock_get_load_size() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_superblock_deserialize
*
* Purpose: Loads an object from the disk.
*
* Return: Success: Pointer to new object
* Failure: NULL
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 18 2013
*
*-------------------------------------------------------------------------
*/
static void *
H5F__cache_superblock_deserialize(const void *_image, size_t len, void *_udata,
hbool_t H5_ATTR_UNUSED *dirty)
{
H5F_super_t *sblock = NULL; /* File's superblock */
H5F_superblock_cache_ud_t *udata = (H5F_superblock_cache_ud_t *)_udata; /* User data */
const uint8_t *image = (const uint8_t *)_image; /* Pointer into raw data buffer */
size_t variable_size; /* Sariable size of superblock */
unsigned super_vers; /* Superblock version */
uint8_t sizeof_addr; /* Size of offsets in the file (in bytes) */
uint8_t sizeof_size; /* Size of lengths in the file (in bytes) */
H5F_super_t *ret_value = NULL; /* Return value */
FUNC_ENTER_STATIC
/* Check arguments */
HDassert(image);
HDassert(udata);
HDassert(udata->f);
/* Allocate space for the superblock */
if(NULL == (sblock = H5FL_CALLOC(H5F_super_t)))
HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed")
/* Skip over signature (already checked when locating the superblock) */
image += H5F_SIGNATURE_LEN;
/* Superblock version */
super_vers = *image++;
if(super_vers > HDF5_SUPERBLOCK_VERSION_LATEST)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad superblock version number")
/* Record the superblock version */
sblock->super_vers = super_vers;
/* Sanity check */
HDassert(((size_t)(image - (const uint8_t *)_image)) == H5F_SUPERBLOCK_FIXED_SIZE);
HDassert(len >= H5F_SUPERBLOCK_FIXED_SIZE + 6);
/* Determine the size of addresses & size of offsets, for computing the
* variable-sized portion of the superblock.
*/
if(super_vers < HDF5_SUPERBLOCK_VERSION_2) {
sizeof_addr = image[4];
sizeof_size = image[5];
} /* end if */
else {
sizeof_addr = image[0];
sizeof_size = image[1];
} /* end else */
if(sizeof_addr != 2 && sizeof_addr != 4 &&
sizeof_addr != 8 && sizeof_addr != 16 && sizeof_addr != 32)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad byte number in an address")
if(sizeof_size != 2 && sizeof_size != 4 &&
sizeof_size != 8 && sizeof_size != 16 && sizeof_size != 32)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad byte number for object size")
sblock->sizeof_addr = sizeof_addr;
sblock->sizeof_size = sizeof_size;
/* Determine the size of the variable-length part of the superblock */
variable_size = (size_t)H5F_SUPERBLOCK_VARLEN_SIZE(super_vers, sizeof_addr, sizeof_size);
HDassert(variable_size > 0);
/* Handle metadata cache retry for variable-sized portion of the superblock */
if(len != (H5F_SUPERBLOCK_FIXED_SIZE + variable_size)) {
/* Sanity check */
HDassert(len == (H5F_SUPERBLOCK_FIXED_SIZE + H5F_SUPERBLOCK_MINIMAL_VARLEN_SIZE));
/* Make certain we can read the variabled-sized portion of the superblock */
if(H5F__set_eoa(udata->f, H5FD_MEM_SUPER, (haddr_t)(H5F_SUPERBLOCK_FIXED_SIZE + variable_size)) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, "set end of space allocation request failed")
} /* end if */
else {
/* Check for older version of superblock format */
if(super_vers < HDF5_SUPERBLOCK_VERSION_2) {
uint32_t status_flags; /* File status flags */
unsigned sym_leaf_k; /* Symbol table leaf node's 'K' value */
unsigned snode_btree_k; /* B-tree symbol table internal node 'K' value */
unsigned chunk_btree_k; /* B-tree chunk internal node 'K' value */
/* Freespace version (hard-wired) */
if(HDF5_FREESPACE_VERSION != *image++)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad free space version number")
/* Root group version number (hard-wired) */
if(HDF5_OBJECTDIR_VERSION != *image++)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad object directory version number")
/* Skip over reserved byte */
image++;
/* Shared header version number (hard-wired) */
if(HDF5_SHAREDHEADER_VERSION != *image++)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad shared-header format version number")
/* Size of file addresses */
sizeof_addr = *image++;
if(sizeof_addr != 2 && sizeof_addr != 4 &&
sizeof_addr != 8 && sizeof_addr != 16 && sizeof_addr != 32)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad byte number in an address")
sblock->sizeof_addr = sizeof_addr;
udata->f->shared->sizeof_addr = sizeof_addr; /* Keep a local copy also */
/* Size of file sizes */
sizeof_size = *image++;
if(sizeof_size != 2 && sizeof_size != 4 &&
sizeof_size != 8 && sizeof_size != 16 && sizeof_size != 32)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad byte number for object size")
sblock->sizeof_size = sizeof_size;
udata->f->shared->sizeof_size = sizeof_size; /* Keep a local copy also */
/* Skip over reserved byte */
image++;
/* Various B-tree sizes */
UINT16DECODE(image, sym_leaf_k);
if(sym_leaf_k == 0)
HGOTO_ERROR(H5E_FILE, H5E_BADRANGE, NULL, "bad symbol table leaf node 1/2 rank")
udata->sym_leaf_k = sym_leaf_k; /* Keep a local copy also */
/* Need 'get' call to set other array values */
UINT16DECODE(image, snode_btree_k);
if(snode_btree_k == 0)
HGOTO_ERROR(H5E_FILE, H5E_BADRANGE, NULL, "bad 1/2 rank for btree internal nodes")
udata->btree_k[H5B_SNODE_ID] = snode_btree_k;
/*
* Delay setting the value in the property list until we've checked
* for the indexed storage B-tree internal 'K' value later.
*/
/* File status flags (not really used yet) */
UINT32DECODE(image, status_flags);
HDassert(status_flags <= 255);
sblock->status_flags = (uint8_t)status_flags;
if(sblock->status_flags & ~H5F_SUPER_ALL_FLAGS)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad flag value for superblock")
/*
* If the superblock version # is greater than 0, read in the indexed
* storage B-tree internal 'K' value
*/
if(super_vers > HDF5_SUPERBLOCK_VERSION_DEF) {
UINT16DECODE(image, chunk_btree_k);
/* Reserved bytes are present only in version 1 */
if(super_vers == HDF5_SUPERBLOCK_VERSION_1)
image += 2; /* reserved */
} /* end if */
else
chunk_btree_k = HDF5_BTREE_CHUNK_IK_DEF;
udata->btree_k[H5B_CHUNK_ID] = chunk_btree_k;
/* Remainder of "variable-sized" portion of superblock */
H5F_addr_decode(udata->f, (const uint8_t **)&image, &sblock->base_addr/*out*/);
H5F_addr_decode(udata->f, (const uint8_t **)&image, &sblock->ext_addr/*out*/);
H5F_addr_decode(udata->f, (const uint8_t **)&image, &udata->stored_eof/*out*/);
H5F_addr_decode(udata->f, (const uint8_t **)&image, &sblock->driver_addr/*out*/);
/* Allocate space for the root group symbol table entry */
HDassert(!sblock->root_ent);
if(NULL == (sblock->root_ent = (H5G_entry_t *)H5MM_calloc(sizeof(H5G_entry_t))))
HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, NULL, "can't allocate space for root group symbol table entry")
/* decode the root group symbol table entry */
if(H5G_ent_decode(udata->f, (const uint8_t **)&image, sblock->root_ent) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTDECODE, NULL, "can't decode root group symbol table entry")
/* Set the root group address to the correct value */
sblock->root_addr = sblock->root_ent->header;
/* This step is for h5repart tool only. If user wants to change file driver
* from family to sec2 while using h5repart, set the driver address to
* undefined to let the library ignore the family driver information saved
* in the superblock.
*/
if(udata->ignore_drvrinfo && H5F_addr_defined(sblock->driver_addr)) {
/* Eliminate the driver info */
sblock->driver_addr = HADDR_UNDEF;
udata->drvrinfo_removed = TRUE;
} /* end if */
/* NOTE: Driver info block is decoded separately, later */
} /* end if */
else {
uint32_t computed_chksum; /* Computed checksum */
uint32_t read_chksum; /* Checksum read from file */
/* Size of file addresses */
sizeof_addr = *image++;
if(sizeof_addr != 2 && sizeof_addr != 4 &&
sizeof_addr != 8 && sizeof_addr != 16 && sizeof_addr != 32)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad byte number in an address")
sblock->sizeof_addr = sizeof_addr;
udata->f->shared->sizeof_addr = sizeof_addr; /* Keep a local copy also */
/* Size of file sizes */
sizeof_size = *image++;
if(sizeof_size != 2 && sizeof_size != 4 &&
sizeof_size != 8 && sizeof_size != 16 && sizeof_size != 32)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad byte number for object size")
sblock->sizeof_size = sizeof_size;
udata->f->shared->sizeof_size = sizeof_size; /* Keep a local copy also */
/* File status flags (not really used yet) */
sblock->status_flags = *image++;
if(sblock->status_flags & ~H5F_SUPER_ALL_FLAGS)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad flag value for superblock")
/* Base, superblock extension, end of file & root group object header addresses */
H5F_addr_decode(udata->f, (const uint8_t **)&image, &sblock->base_addr/*out*/);
H5F_addr_decode(udata->f, (const uint8_t **)&image, &sblock->ext_addr/*out*/);
H5F_addr_decode(udata->f, (const uint8_t **)&image, &udata->stored_eof/*out*/);
H5F_addr_decode(udata->f, (const uint8_t **)&image, &sblock->root_addr/*out*/);
/* Compute checksum for superblock */
computed_chksum = H5_checksum_metadata(_image, (size_t)(image - (const uint8_t *)_image), 0);
/* Decode checksum */
UINT32DECODE(image, read_chksum);
/* Verify correct checksum */
if(read_chksum != computed_chksum)
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENFILE, NULL, "bad checksum on driver information block")
/* The Driver Information Block may not appear with the version
* 2 super block. Thus we set the driver_addr field of the in
* core representation of the super block HADDR_UNDEF to prevent
* any attempt to load the Driver Information Block.
*/
sblock->driver_addr = HADDR_UNDEF;
} /* end else */
} /* end else */
/* Sanity check */
HDassert((size_t)(image - (const uint8_t *)_image) <= len);
/* Set return value */
ret_value = sblock;
done:
/* Release the [possibly partially initialized] superblock on error */
if(!ret_value && sblock)
if(H5F__super_free(sblock) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTFREE, NULL, "unable to destroy superblock data")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F__cache_superblock_deserialize() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_superblock_image_len
*
* Purpose: Compute the size of the data structure on disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 19, 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_superblock_image_len(const void *_thing, size_t *image_len, hbool_t *compressed_ptr, size_t H5_ATTR_UNUSED *compressed_image_len_ptr)
{
const H5F_super_t *sblock = (const H5F_super_t *)_thing; /* Pointer to the object */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(sblock);
HDassert(sblock->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(sblock->cache_info.type == H5AC_SUPERBLOCK);
HDassert(image_len);
HDassert(compressed_ptr);
/* Set the image length size */
*image_len = (size_t)H5F_SUPERBLOCK_SIZE(sblock);
/* Set *compressed_ptr to FALSE unconditionally */
*compressed_ptr = FALSE;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5F__cache_superblock_image_len() */
/*-------------------------------------------------------------------------
* Function: H5FS__cache_hdf_pre_serialize
*
* Purpose: The current use of this function is a cludge to repair an
* oversight in the conversion of the superblock code to use the
* version 3 cache.
*
* In the V2 metadata cache callbacks, the superblock dirver info
* message was updated in the flush routine. Note that this
* operation only applies to version 2 or later superblocks.
*
* Somehow, this functionality was lost in the conversion to use
* the V3 cache, causing failures with the multi file driver
* (and possibly the family file driver as well).
*
* Performing this operation is impossible in the current
* serialize routine, as the dxpl_id is not available. While
* I am pretty sure that this is not the correct place for this
* functionality, as I can see it causing problems with both
* journaling and possibly parallel HDF5 as well, I am placing
* code for the necessary update in the pre_serialize call for
* now for testing purposes. We will almost certainly want to
* change this.
*
* Return: Success: SUCCEED
* Failure: FAIL
*
* Programmer: John Mainzer
* 10/82/14
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_superblock_pre_serialize(const H5F_t *f, hid_t dxpl_id,
void *_thing, haddr_t H5_ATTR_UNUSED addr, size_t H5_ATTR_UNUSED len,
size_t H5_ATTR_UNUSED compressed_len, haddr_t H5_ATTR_UNUSED *new_addr,
size_t H5_ATTR_UNUSED *new_len, size_t H5_ATTR_UNUSED *new_compressed_len,
unsigned H5_ATTR_UNUSED *flags)
{
H5P_genplist_t *dxpl = NULL; /* DXPL for setting ring */
H5AC_ring_t orig_ring = H5AC_RING_INV; /* Original ring value */
H5F_super_t *sblock = (H5F_super_t *)_thing; /* Pointer to the super block */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* Sanity check */
HDassert(f);
HDassert(sblock);
HDassert(sblock->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(sblock->cache_info.type == H5AC_SUPERBLOCK);
HDassert(flags);
if(sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2) {
/* WARNING: This code almost certainly doesn't belong here. Must
* discuss with Quincey where to put it. Note issues
* for journaling and possibly parallel.
*
* -- JRM
*/
/* Update the driver information message in the superblock extension
* if appropriate.
*/
if(H5F_addr_defined(sblock->ext_addr)) {
size_t driver_size; /* Size of driver info block (bytes)*/
H5O_loc_t ext_loc; /* "Object location" for superblock extension */
HDassert(sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2);
/* Open the superblock extension's object header */
if(H5F_super_ext_open((H5F_t *)f, sblock->ext_addr, &ext_loc) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENOBJ, FAIL, "unable to open file's superblock extension")
/* Check for ignoring the driver info for this file */
if(!H5F_HAS_FEATURE(f, H5FD_FEAT_IGNORE_DRVRINFO)) {
/* Check for driver info message */
H5_CHECKED_ASSIGN(driver_size, size_t, H5FD_sb_size(f->shared->lf), hsize_t);
if(driver_size > 0) {
H5O_drvinfo_t drvinfo; /* Driver info */
uint8_t dbuf[H5F_MAX_DRVINFOBLOCK_SIZE]; /* Driver info block encoding buffer */
/* Sanity check */
HDassert(driver_size <= H5F_MAX_DRVINFOBLOCK_SIZE);
/* Encode driver-specific data */
if(H5FD_sb_encode(f->shared->lf, drvinfo.name, dbuf) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to encode driver information")
/* Set the ring type in the DXPL */
if(H5AC_set_ring(dxpl_id, H5AC_RING_SBE, &dxpl, &orig_ring) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set ring value")
/* Write driver info information to the superblock extension */
drvinfo.len = driver_size;
drvinfo.buf = dbuf;
if(H5O_msg_write(&ext_loc, H5O_DRVINFO_ID, H5O_MSG_FLAG_DONTSHARE, H5O_UPDATE_TIME, &drvinfo, dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "unable to update driver info header message")
} /* end if */
} /* end if */
/* Close the superblock extension object header */
if(H5F_super_ext_close((H5F_t *)f, &ext_loc, dxpl_id, FALSE) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, FAIL, "unable to close file's superblock extension")
} /* end if */
} /* end if */
done:
/* Reset the ring in the DXPL */
if(H5AC_reset_ring(dxpl, orig_ring) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set property value")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FS_cache_superblock_pre_serialize() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_superblock_serialize
*
* Purpose: Flushes a dirty object to disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 19 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_superblock_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_UNUSED len,
void *_thing)
{
H5F_super_t *sblock = (H5F_super_t *)_thing; /* Pointer to the object */
uint8_t *image = (uint8_t *)_image; /* Pointer into raw data buffer */
haddr_t rel_eof; /* Relative EOF for file */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_STATIC
/* Sanity check */
HDassert(f);
HDassert(image);
HDassert(sblock);
/* Assert that the superblock is marked as being flushed last (and
collectively in parallel) */
/* (We'll rely on the cache to make sure it actually *is* flushed
last (and collectively in parallel), but this check doesn't hurt) */
HDassert(sblock->cache_info.flush_me_last);
#ifdef H5_HAVE_PARALLEL
HDassert(sblock->cache_info.flush_me_collectively);
#endif
/* Encode the common portion of the file superblock for all versions */
HDmemcpy(image, H5F_SIGNATURE, (size_t)H5F_SIGNATURE_LEN);
image += H5F_SIGNATURE_LEN;
*image++ = (uint8_t)sblock->super_vers;
/* Check for older version of superblock format */
if(sblock->super_vers < HDF5_SUPERBLOCK_VERSION_2) {
*image++ = (uint8_t)HDF5_FREESPACE_VERSION; /* (hard-wired) */
*image++ = (uint8_t)HDF5_OBJECTDIR_VERSION; /* (hard-wired) */
*image++ = 0; /* reserved*/
*image++ = (uint8_t)HDF5_SHAREDHEADER_VERSION; /* (hard-wired) */
*image++ = sblock->sizeof_addr;
*image++ = sblock->sizeof_size;
*image++ = 0; /* reserved */
UINT16ENCODE(image, sblock->sym_leaf_k);
UINT16ENCODE(image, sblock->btree_k[H5B_SNODE_ID]);
UINT32ENCODE(image, (uint32_t)sblock->status_flags);
/*
* Versions of the superblock >0 have the indexed storage B-tree
* internal 'K' value stored
*/
if(sblock->super_vers > HDF5_SUPERBLOCK_VERSION_DEF) {
UINT16ENCODE(image, sblock->btree_k[H5B_CHUNK_ID]);
*image++ = 0; /*reserved */
*image++ = 0; /*reserved */
} /* end if */
/* Encode the base address */
H5F_addr_encode(f, &image, sblock->base_addr);
/* Encode the address of global free-space index */
H5F_addr_encode(f, &image, sblock->ext_addr);
/* Encode the end-of-file address. Note that at this point in time,
* the EOF value itself may not be reflective of the file's size, as
* we will eventually truncate the file to match the EOA value. As
* such, use the EOA value in its place, knowing that the current EOF
* value will ultimately match it. */
if ((rel_eof = H5FD_get_eoa(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed")
H5F_addr_encode(f, &image, (rel_eof + sblock->base_addr));
/* Encode the driver informaton block address */
H5F_addr_encode(f, &image, sblock->driver_addr);
/* Encode the root group object entry, including the cached stab info */
if(H5G_ent_encode(f, &image, sblock->root_ent) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTENCODE, FAIL, "can't encode root group symbol table entry")
/* NOTE: Driver info block is handled separately */
} /* end if */
else { /* sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2 */
uint32_t chksum; /* Checksum temporary variable */
H5O_loc_t *root_oloc; /* Pointer to root group's object location */
htri_t should_truncate; /* Whether the file should be truncated */
hid_t dxpl_id = H5AC_dxpl_id;
/* Size of file addresses & offsets, and status flags */
*image++ = sblock->sizeof_addr;
*image++ = sblock->sizeof_size;
*image++ = sblock->status_flags;
/* Encode the base address */
H5F_addr_encode(f, &image, sblock->base_addr);
/* Encode the address of the superblock extension */
H5F_addr_encode(f, &image, sblock->ext_addr);
if((should_truncate = H5F__should_truncate(f, dxpl_id)) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't check whether truncation is required.");
/* Encode the end-of-file address if the file will not be truncated
at file close */
if(FALSE == should_truncate) {
H5F_io_info_t fio_info; /* I/O info for operation */
/* If we're avoiding truncating the file, then we need to
* store the file's size in the superblock. We will only be
* in this routine in this case when all other metadata
* has been flushed. Therefore, we first flush all buffers
* to make sure everything is to disk. Then we can query the
* file driver layer for the EOF value, which we use to store
* the file's size. Note that in parallel, we need to
* coordinate the EOF value amongst all processes before
* querying it. We will be flushing collectively. */
/* Set up I/O info for operation */
fio_info.f = f;
if(NULL == (fio_info.dxpl = (H5P_genplist_t *)H5I_object(dxpl_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list");
if(H5F__accum_flush(&fio_info) < 0)
HGOTO_ERROR(H5E_IO, H5E_CANTFLUSH, FAIL, "unable to flush metadata accumulator");
if(H5FD_flush(f->shared->lf, dxpl_id, FALSE) < 0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "low level flush failed");
#ifdef H5_HAVE_PARALLEL
/* H5F__should_truncate() calls H5FD_coordinate() if the avoid truncation setting is
H5F_AVOID_TRUNCATE_OFF or H5F_AVOID_TRUNCATE_EXTEND. We need to call H5FD_coordinate()
here only if the avoid truncation setting is H5F_AVOID_TRUNCATE_ALL to coordinate the
EOFs before querying it. */
if(H5F_AVOID_TRUNCATE(f) == H5F_AVOID_TRUNCATE_ALL) {
if(H5FD_coordinate(f->shared->lf, dxpl_id, H5FD_COORD_EOF) < 0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "low level coordinate failed");
}
#endif
/* Check again if truncation will happen after updating the EOF when flushing. */
if((should_truncate = H5F__should_truncate(f, dxpl_id)) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't check whether truncation is required.");
if(FALSE == should_truncate) {
if ((rel_eof = H5FD_get_eof(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "driver get_eof request failed");
H5F_addr_encode(f, &image, rel_eof + sblock->base_addr);
} /* end if */
} /* end if */
if(TRUE == should_truncate) {
/* Otherwise, at this point in time, the EOF value
* itself may not be reflective of the file's size,
* since we'll eventually truncate it to match the EOA
* value. As such, use the EOA value in its place,
* knowing that the current EOF value will ultimately
* match it. */
if ((rel_eof = H5FD_get_eoa(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed");
H5F_addr_encode(f, &image, rel_eof + sblock->base_addr);
} /* end if */
#if 0
/* Encode the end-of-file address if the file will not be truncated
at file close */
if(!H5F__should_truncate(f, H5AC_dxpl_id)) {
if ((rel_eof = H5FD_get_eof(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "driver get_eof request failed")
H5F_addr_encode(f, &image, rel_eof + sblock->base_addr);
} /* end if */
else {
/* Otherwise, at this point in time, the EOF value
* itself may not be reflective of the file's size,
* since we'll eventually truncate it to match the EOA
* value. As such, use the EOA value in its place,
* knowing that the current EOF value will ultimately
* match it. */
if ((rel_eof = H5FD_get_eoa(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed")
H5F_addr_encode(f, &image, rel_eof + sblock->base_addr);
} /* end if */
#endif
/* Retrieve information for root group */
if(NULL == (root_oloc = H5G_oloc(f->shared->root_grp)))
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to retrieve root group information")
/* Encode address of root group's object header */
H5F_addr_encode(f, &image, root_oloc->addr);
/* Compute superblock checksum */
chksum = H5_checksum_metadata(_image, ((size_t)H5F_SUPERBLOCK_SIZE(sblock) - H5F_SIZEOF_CHKSUM), 0);
/* Superblock checksum */
UINT32ENCODE(image, chksum);
/* Sanity check */
HDassert((size_t)(image - (uint8_t *)_image) == (size_t)H5F_SUPERBLOCK_SIZE(sblock));
} /* end else */
/* Sanity check */
HDassert((size_t)(image - (uint8_t *)_image) == len);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5F__cache_superblock_serialize() */
static herr_t
H5F__cache_superblock_notify(H5C_notify_action_t action, const H5F_t *f, void *thing, hid_t dxpl_id)
{
H5F_super_t *sblock = (H5F_super_t *)thing; /* Pointer to the super block */
H5P_genplist_t *dxpl = NULL; /* DXPL for setting ring */
H5AC_ring_t orig_ring = H5AC_RING_INV; /* Original ring value */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT
/* Sanity check */
HDassert(f);
HDassert(sblock);
HDassert(sblock->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(sblock->cache_info.type == H5AC_SUPERBLOCK);
if(H5C_NOTIFY_ACTION_AFTER_FLUSH == action && sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2) {
/* Update the driver information message in the superblock extension
* if appropriate.
*/
if(H5F_addr_defined(sblock->ext_addr)) {
size_t driver_size; /* Size of driver info block (bytes)*/
H5O_loc_t ext_loc; /* "Object location" for superblock extension */
htri_t exists; /* Status for message existing */
hid_t dxpl_id = H5AC_dxpl_id;
HDassert(sblock->super_vers >= HDF5_SUPERBLOCK_VERSION_2);
/* Set the ring type in the DXPL */
if(H5AC_set_ring(dxpl_id, H5AC_RING_SBE, &dxpl, &orig_ring) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set ring value")
/* Open the superblock extension's object header */
if(H5F_super_ext_open((H5F_t *)f, sblock->ext_addr, &ext_loc) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTOPENOBJ, FAIL, "unable to open file's superblock extension")
/* Check for the 'EOA' message */
if((exists = H5O_msg_exists(&ext_loc, H5O_EOA_ID, dxpl_id)) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "unable to read object header")
if(exists) {
H5O_eoa_t eoa_msg; /* EOA message for the superblock extension */
unsigned mesg_flags; /* Message flags for writing the message */
H5FD_mem_t mt;
/* Set the message flag */
eoa_msg.avoid_truncate = f->shared->avoid_truncate;
/* If the 'EOA' message is the same as the 'EOF' message, then
* older versions of HDF5 can read the file provided they just
* ignore this EOA message, so we write it with the 'mark if
* unknown' flag. However, if the two values differ, then
* older versions will be unable to correctly predict if the file
* has been truncated, so we write this message with a 'fail if
* unknown' flag'.
*/
if(f->shared->feature_flags & H5FD_FEAT_MULTIPLE_MEM_TYPE_BACKENDS) {
mesg_flags = H5O_MSG_FLAG_MARK_IF_UNKNOWN;
for(mt = H5FD_MEM_SUPER; mt < H5FD_MEM_NTYPES; mt = (H5FD_mem_t)(mt + 1)) {
haddr_t memb_eoa, memb_eof;
if((memb_eoa = H5FD_get_eoa(f->shared->lf, mt)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed")
eoa_msg.memb_eoa[mt-1] = memb_eoa;
if(H5FD_MEM_SUPER == mt)
eoa_msg.memb_eoa[mt-1] += sblock->base_addr;
if((memb_eof = H5FD_get_eof(f->shared->lf, mt)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eof request failed")
if(memb_eoa > memb_eof)
mesg_flags = H5O_MSG_FLAG_FAIL_IF_UNKNOWN_AND_OPEN_FOR_WRITE;
else if(memb_eoa != memb_eof)
mesg_flags = H5O_MSG_FLAG_FAIL_IF_UNKNOWN_ALWAYS;
}
}
else {
haddr_t rel_eof; /* Relative EOF for file */
/* Get the current EOA */
if((eoa_msg.memb_eoa[0] = H5FD_get_eoa(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed");
if(!H5F__should_truncate(f, dxpl_id)) {
if(H5F_AVOID_TRUNCATE(f) == H5F_AVOID_TRUNCATE_ALL) {
if(H5FD_coordinate(f->shared->lf, dxpl_id, H5FD_COORD_EOF) < 0)
HGOTO_ERROR(H5E_IO, H5E_WRITEERROR, FAIL, "low level coordinate failed");
}
if ((rel_eof = H5FD_get_eof(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "driver get_eof request failed");
} /* end if */
else {
if ((rel_eof = H5FD_get_eoa(f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, FAIL, "driver get_eoa request failed");
} /* end if */
if(eoa_msg.memb_eoa[0] > rel_eof)
mesg_flags = H5O_MSG_FLAG_FAIL_IF_UNKNOWN_AND_OPEN_FOR_WRITE;
else if(eoa_msg.memb_eoa[0] < rel_eof)
mesg_flags = H5O_MSG_FLAG_FAIL_IF_UNKNOWN_ALWAYS;
else
mesg_flags = H5O_MSG_FLAG_MARK_IF_UNKNOWN;
/* add the base address to the EOA */
eoa_msg.memb_eoa[0] += sblock->base_addr;
}
if(H5O_msg_write(&ext_loc, H5O_EOA_ID, mesg_flags, H5O_UPDATE_TIME, &eoa_msg, dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "unable to update EOA header message")
} /* end if */
/* Check for ignoring the driver info for this file */
if(!H5F_HAS_FEATURE(f, H5FD_FEAT_IGNORE_DRVRINFO)) {
/* Check for driver info message */
H5_CHECKED_ASSIGN(driver_size, size_t, H5FD_sb_size(f->shared->lf), hsize_t);
if(driver_size > 0) {
H5O_drvinfo_t drvinfo; /* Driver info */
uint8_t dbuf[H5F_MAX_DRVINFOBLOCK_SIZE]; /* Driver info block encoding buffer */
/* Sanity check */
HDassert(driver_size <= H5F_MAX_DRVINFOBLOCK_SIZE);
/* Encode driver-specific data */
if(H5FD_sb_encode(f->shared->lf, drvinfo.name, dbuf) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to encode driver information")
/* Write driver info information to the superblock extension */
drvinfo.len = driver_size;
drvinfo.buf = dbuf;
if(H5O_msg_write(&ext_loc, H5O_DRVINFO_ID, H5O_MSG_FLAG_DONTSHARE, H5O_UPDATE_TIME, &drvinfo, dxpl_id) < 0)
HGOTO_ERROR(H5E_FILE, H5E_WRITEERROR, FAIL, "unable to update driver info header message")
} /* end if */
} /* end if */
/* Close the superblock extension object header */
if(H5F_super_ext_close((H5F_t *)f, &ext_loc, dxpl_id, FALSE) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTCLOSEOBJ, FAIL, "unable to close file's superblock extension")
} /* end if */
} /* end if */
done:
/* Reset the ring in the DXPL */
if(H5AC_reset_ring(dxpl, orig_ring) < 0)
HDONE_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "unable to set property value")
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5FS_cache_superblock_notify() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_superblock_free_icr
*
* Purpose: Destroy/release an "in core representation" of a data
* structure
*
* Note: The metadata cache sets the object's cache_info.magic to
* H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
* callback (checked in assert).
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 20, 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_superblock_free_icr(void *_thing)
{
H5F_super_t *sblock = (H5F_super_t *)_thing; /* Pointer to the object */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_STATIC
/* Sanity check */
HDassert(sblock);
HDassert(sblock->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
HDassert(sblock->cache_info.type == H5AC_SUPERBLOCK);
/* Destroy superblock */
if(H5F__super_free(sblock) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTFREE, FAIL, "unable to free superblock")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5F__cache_superblock_free_icr() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_drvrinfo_get_load_size
*
* Purpose: Compute the size of the data structure on disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 20, 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_drvrinfo_get_load_size(const void H5_ATTR_UNUSED *udata, size_t *image_len)
{
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(image_len);
/* Set the initial image length size */
*image_len = H5F_DRVINFOBLOCK_HDR_SIZE; /* Fixed size portion of driver info block */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5F__cache_drvrinfo_get_load_size() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_drvrinfo_deserialize
*
* Purpose: Loads an object from the disk.
*
* Return: Success: Pointer to a new B-tree.
* Failure: NULL
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 20 2013
*
*-------------------------------------------------------------------------
*/
static void *
H5F__cache_drvrinfo_deserialize(const void *_image, size_t len, void *_udata,
hbool_t H5_ATTR_UNUSED *dirty)
{
H5O_drvinfo_t *drvinfo = NULL; /* Driver info */
H5F_drvrinfo_cache_ud_t *udata = (H5F_drvrinfo_cache_ud_t *)_udata; /* User data */
const uint8_t *image = (const uint8_t *)_image; /* Pointer into raw data buffer */
char drv_name[9]; /* Name of driver */
unsigned drv_vers; /* Version of driver info block */
H5O_drvinfo_t *ret_value = NULL; /* Return value */
FUNC_ENTER_STATIC
/* Sanity check */
HDassert(image);
HDassert(len >= H5F_DRVINFOBLOCK_HDR_SIZE);
HDassert(udata);
HDassert(udata->f);
/* Allocate space for the driver info */
if(NULL == (drvinfo = (H5O_drvinfo_t *)H5MM_calloc(sizeof(H5O_drvinfo_t))))
HGOTO_ERROR(H5E_FILE, H5E_CANTALLOC, NULL, "memory allocation failed for driver info message")
/* Version number */
drv_vers = *image++;
if(drv_vers != HDF5_DRIVERINFO_VERSION_0)
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, NULL, "bad driver information block version number")
image += 3; /* reserved bytes */
/* Driver info size */
UINT32DECODE(image, drvinfo->len);
/* Driver name and/or version */
HDstrncpy(drv_name, (const char *)image, (size_t)8);
drv_name[8] = '\0';
image += 8; /* advance past name/version */
/* Handle metadata cache retry for variable-sized portion of the driver info block */
if(len != (H5F_DRVINFOBLOCK_HDR_SIZE + drvinfo->len)) {
/* Sanity check */
HDassert(len == H5F_DRVINFOBLOCK_HDR_SIZE);
/* extend the eoa if required so that we can read the complete driver info block */
{
haddr_t eoa;
haddr_t min_eoa;
/* get current eoa... */
if ((eoa = H5FD_get_eoa(udata->f->shared->lf, H5FD_MEM_SUPER)) == HADDR_UNDEF)
HGOTO_ERROR(H5E_RESOURCE, H5E_CANTGET, NULL, "driver get_eoa request failed")
/* ... if it is too small, extend it. */
min_eoa = udata->driver_addr + H5F_DRVINFOBLOCK_HDR_SIZE + drvinfo->len;
if ( H5F_addr_gt(min_eoa, eoa) )
if(H5FD_set_eoa(udata->f->shared->lf, H5FD_MEM_SUPER, min_eoa) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, NULL, \
"set end of space allocation request failed")
}
} /* end if */
else {
/* Validate and decode driver information */
if(H5FD_sb_load(udata->f->shared->lf, drv_name, image) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTDECODE, NULL, "unable to decode driver information")
} /* end if */
/* Sanity check */
HDassert((size_t)(image - (const uint8_t *)_image) <= len);
/* Set return value */
ret_value = drvinfo;
done:
/* Release the [possibly partially initialized] driver info message on error */
if(!ret_value && drvinfo)
H5MM_xfree(drvinfo);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F__cache_drvrinfo_deserialize() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_drvrinfo_image_len
*
* Purpose: Compute the size of the data structure on disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 20, 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_drvrinfo_image_len(const void *_thing, size_t *image_len,
hbool_t H5_ATTR_UNUSED *compressed_ptr, size_t H5_ATTR_UNUSED *compressed_image_len_ptr)
{
const H5O_drvinfo_t *drvinfo = (const H5O_drvinfo_t *)_thing; /* Pointer to the object */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(drvinfo);
HDassert(drvinfo->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(drvinfo->cache_info.type == H5AC_DRVRINFO);
HDassert(image_len);
HDassert(compressed_ptr);
/* Set the image length size */
*image_len = (size_t)(H5F_DRVINFOBLOCK_HDR_SIZE + /* Fixed-size portion of driver info block */
drvinfo->len); /* Variable-size portion of driver info block */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5F__cache_drvrinfo_image_len() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_drvrinfo_serialize
*
* Purpose: Flushes a dirty object to disk.
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 20 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_drvrinfo_serialize(const H5F_t *f, void *_image, size_t len,
void *_thing)
{
H5O_drvinfo_t *drvinfo = (H5O_drvinfo_t *)_thing; /* Pointer to the object */
uint8_t *image = (uint8_t *)_image; /* Pointer into raw data buffer */
uint8_t *dbuf; /* Pointer to beginning of driver info */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_STATIC
/* check arguments */
HDassert(f);
HDassert(image);
HDassert(drvinfo);
HDassert(drvinfo->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_MAGIC);
HDassert(drvinfo->cache_info.type == H5AC_DRVRINFO);
HDassert(len == (size_t)(H5F_DRVINFOBLOCK_HDR_SIZE + drvinfo->len));
/* Save pointer to beginning of driver info */
dbuf = image;
/* Encode the driver information block */
*image++ = HDF5_DRIVERINFO_VERSION_0; /* Version */
*image++ = 0; /* reserved */
*image++ = 0; /* reserved */
*image++ = 0; /* reserved */
/* Driver info size, excluding header */
UINT32ENCODE(image, drvinfo->len);
/* Encode driver-specific data */
if(H5FD_sb_encode(f->shared->lf, (char *)image, dbuf + H5F_DRVINFOBLOCK_HDR_SIZE) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to encode driver information")
/* Advance buffer pointer past name & variable-sized portion of driver info */
image += 8 + drvinfo->len;
/* Sanity check */
HDassert((size_t)(image - (uint8_t *)_image) == len);
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5F__cache_drvrinfo_serialize() */
/*-------------------------------------------------------------------------
* Function: H5F__cache_drvrinfo_free_icr
*
* Purpose: Destroy/release an "in core representation" of a data
* structure
*
* Note: The metadata cache sets the object's cache_info.magic to
* H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC before calling a free_icr
* callback (checked in assert).
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* July 20, 2013
*
*-------------------------------------------------------------------------
*/
static herr_t
H5F__cache_drvrinfo_free_icr(void *_thing)
{
H5O_drvinfo_t *drvinfo = (H5O_drvinfo_t *)_thing; /* Pointer to the object */
FUNC_ENTER_STATIC_NOERR
/* Check arguments */
HDassert(drvinfo);
HDassert(drvinfo->cache_info.magic == H5C__H5C_CACHE_ENTRY_T_BAD_MAGIC);
HDassert(drvinfo->cache_info.type == H5AC_DRVRINFO);
/* Destroy driver info message */
H5MM_xfree(drvinfo);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5F__cache_drvrinfo_free_icr() */
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