/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 COPYING file, which can be found at the root of the source code * * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * * If you do not have access to either file, you may request a copy from * * help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /*------------------------------------------------------------------------- * * Created: H5Ocache_image.c * June 21, 2015 * John Mainzer * * Purpose: A message indicating that a metadata cache image block * of the indicated length exists at the specified offset * in the HDF5 file. * * The mdci_msg only appears in the superblock extension. * *------------------------------------------------------------------------- */ #include "H5Omodule.h" /* This source code file is part of the H5O module */ #include "H5private.h" /* Generic Functions */ #include "H5Eprivate.h" /* Error handling */ #include "H5Fprivate.h" /* Files */ #include "H5FLprivate.h" /* Free Lists */ #include "H5Opkg.h" /* Object headers */ #include "H5MFprivate.h" /* File space management */ /* Callbacks for message class */ static void *H5O__mdci_decode(H5F_t *f, H5O_t *open_oh, unsigned mesg_flags, unsigned *ioflags, size_t p_size, const uint8_t *p); static herr_t H5O__mdci_encode(H5F_t *f, hbool_t disable_shared, uint8_t *p, const void *_mesg); static void *H5O__mdci_copy(const void *_mesg, void *_dest); static size_t H5O__mdci_size(const H5F_t *f, hbool_t disable_shared, const void *_mesg); static herr_t H5O__mdci_free(void *mesg); static herr_t H5O__mdci_delete(H5F_t *f, H5O_t *open_oh, void *_mesg); static herr_t H5O__mdci_debug(H5F_t *f, const void *_mesg, FILE *stream, int indent, int fwidth); /* This message derives from H5O message class */ const H5O_msg_class_t H5O_MSG_MDCI[1] = {{ H5O_MDCI_MSG_ID, /* message id number */ "mdci", /* message name for debugging */ sizeof(H5O_mdci_t), /* native message size */ 0, /* messages are sharable? */ H5O__mdci_decode, /* decode message */ H5O__mdci_encode, /* encode message */ H5O__mdci_copy, /* copy method */ H5O__mdci_size, /* size of mdc image message */ NULL, /* reset method */ H5O__mdci_free, /* free method */ H5O__mdci_delete, /* file delete method */ NULL, /* link method */ NULL, /* set share method */ NULL, /* can share method */ NULL, /* pre copy native value to file */ NULL, /* copy native value to file */ NULL, /* post copy native value to file */ NULL, /* get creation index */ NULL, /* set creation index */ H5O__mdci_debug /* debugging */ }}; /* Only one version of the metadata cache image message at present */ #define H5O_MDCI_VERSION_0 0 /* Declare the free list for H5O_mdci_t's */ H5FL_DEFINE(H5O_mdci_t); /*------------------------------------------------------------------------- * Function: H5O__mdci_decode * * Purpose: Decode a metadata cache image message and return a * pointer to a newly allocated H5O_mdci_t struct. * * Return: Success: Ptr to new message in native struct. * Failure: NULL * * Programmer: John Mainzer * 6/22/15 * *------------------------------------------------------------------------- */ static void * H5O__mdci_decode(H5F_t *f, H5O_t H5_ATTR_UNUSED *open_oh, unsigned H5_ATTR_UNUSED mesg_flags, unsigned H5_ATTR_UNUSED *ioflags, size_t H5_ATTR_UNUSED p_size, const uint8_t *p) { H5O_mdci_t *mesg; /* Native message */ void *ret_value = NULL; /* Return value */ FUNC_ENTER_STATIC /* Sanity check */ HDassert(f); HDassert(p); /* Version of message */ if(*p++ != H5O_MDCI_VERSION_0) HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "bad version number for message") /* Allocate space for message */ if(NULL == (mesg = (H5O_mdci_t *)H5FL_MALLOC(H5O_mdci_t))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for metadata cache image message") /* Decode */ H5F_addr_decode(f, &p, &(mesg->addr)); H5F_DECODE_LENGTH(f, p, mesg->size); /* Set return value */ ret_value = (void *)mesg; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O__mdci_decode() */ /*------------------------------------------------------------------------- * Function: H5O__mdci_encode * * Purpose: Encode metadata cache image message * * Return: Non-negative on success/Negative on failure * * Programmer: John Mainzer * 6/22/15 * *------------------------------------------------------------------------- */ static herr_t H5O__mdci_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p, const void *_mesg) { const H5O_mdci_t *mesg = (const H5O_mdci_t *)_mesg; FUNC_ENTER_STATIC_NOERR /* Sanity check */ HDassert(f); HDassert(p); HDassert(mesg); /* encode */ *p++ = H5O_MDCI_VERSION_0; H5F_addr_encode(f, &p, mesg->addr); H5F_ENCODE_LENGTH(f, p, mesg->size); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5O__mdci_encode() */ /*------------------------------------------------------------------------- * Function: H5O__mdci_copy * * Purpose: Copies a message from _MESG to _DEST, allocating _DEST if * necessary. * * Return: Success: Ptr to _DEST * Failure: NULL * * Programmer: John Mainzer * 6/22/15 * *------------------------------------------------------------------------- */ static void * H5O__mdci_copy(const void *_mesg, void *_dest) { const H5O_mdci_t *mesg = (const H5O_mdci_t *)_mesg; H5O_mdci_t *dest = (H5O_mdci_t *) _dest; void *ret_value = NULL; /* Return value */ FUNC_ENTER_STATIC /* check args */ HDassert(mesg); if(!dest && NULL == (dest = H5FL_MALLOC(H5O_mdci_t))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") /* copy */ *dest = *mesg; /* Set return value */ ret_value = dest; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O_mdci__copy() */ /*------------------------------------------------------------------------- * Function: H5O__mdci_size * * Purpose: Returns the size of the raw message in bytes not counting * the message type or size fields, but only the data fields. * This function doesn't take into account alignment. * * Return: Success: Message data size in bytes without alignment. * * Failure: zero * * Programmer: John Mainzer * 6/22/15 * *------------------------------------------------------------------------- */ static size_t H5O__mdci_size(const H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, const void H5_ATTR_UNUSED *_mesg) { size_t ret_value = 0; /* Return value */ FUNC_ENTER_STATIC_NOERR /* Set return value */ ret_value = (size_t)( 1 + /* Version number */ H5F_SIZEOF_ADDR(f) + /* addr of metadata cache */ /* image block */ H5F_SIZEOF_SIZE(f) ); /* length of metadata cache */ /* image block */ FUNC_LEAVE_NOAPI(ret_value) } /* end H5O__mdci_size() */ /*------------------------------------------------------------------------- * Function: H5O__mdci_free * * Purpose: Free the message * * Return: Non-negative on success/Negative on failure * * Programmer: John Mainzer * 6/22/15 * *------------------------------------------------------------------------- */ static herr_t H5O__mdci_free(void *mesg) { FUNC_ENTER_STATIC_NOERR HDassert(mesg); mesg = H5FL_FREE(H5O_mdci_t, mesg); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5O__mdci_free() */ /*------------------------------------------------------------------------- * Function: H5O__mdci_delete * * Purpose: Free file space referenced by message * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * Wednesday, March 19, 2003 * *------------------------------------------------------------------------- */ static herr_t H5O__mdci_delete(H5F_t *f, H5O_t *open_oh, void *_mesg) { H5O_mdci_t *mesg = (H5O_mdci_t *)_mesg; herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC /* check args */ HDassert(f); HDassert(open_oh); HDassert(mesg); /* Free file space for cache image */ if(H5F_addr_defined(mesg->addr)) { /* The space for the cache image block was allocated directly * from the VFD layer at the end of file. As this was the * last file space allocation before shutdown, the cache image * should still be the last item in the file. * * If the hack to work around the self referential free space * manager issue is in use, file space for the non-empty self * referential free space managers was also allocated from VFD * layer at the end of file. Since these allocations directly * preceeded the cache image allocation they should be directly * adjacent to the cache image block at the end of file. * * In this case, just call H5MF_tidy_self_referential_fsm_hack(). * * That routine will float the self referential free space * managers, and reduce the eoa to its value just prior to * allocation of space for same. Since the cache image appears * just after the self referential free space managers, this * will release the file space for the cache image as well. * * Note that in this case, there must not have been any file * space allocations / deallocations prior to the free of the * cache image. Verify this to the extent possible. * * If the hack to work around the persistent self referential * free space manager issue is NOT in use, just call H5MF_xfree() * to release the cache iamge. In principle, we should be able * to just reduce the EOA to the base address of the cache * image block, as there shouldn't be any file space allocation * before the first metadata cache access. However, given * time constraints, I don't want to go there now. */ if(H5F_FIRST_ALLOC_DEALLOC(f)) { HDassert(HADDR_UNDEF != H5F_EOA_PRE_FSM_FSALLOC(f)); HDassert(H5F_addr_ge(mesg->addr, H5F_EOA_PRE_FSM_FSALLOC(f))); if(H5MF_tidy_self_referential_fsm_hack(f) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "tidy of self referential fsm hack failed") } /* end if */ else { if(H5MF_xfree(f, H5FD_MEM_SUPER, mesg->addr, mesg->size) < 0) HGOTO_ERROR(H5E_OHDR, H5E_CANTFREE, FAIL, "unable to free file space for cache image block") } /* end else */ } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5O__mdci_delete() */ /*------------------------------------------------------------------------- * Function: H5O__mdci_debug * * Purpose: Prints debugging info. * * Return: Non-negative on success/Negative on failure * * Programmer: John Mainzer * 6/22/15 * *------------------------------------------------------------------------- */ static herr_t H5O__mdci_debug(H5F_t H5_ATTR_UNUSED *f, const void *_mesg, FILE *stream, int indent, int fwidth) { const H5O_mdci_t *mdci = (const H5O_mdci_t *) _mesg; FUNC_ENTER_STATIC_NOERR /* check args */ HDassert(f); HDassert(mdci); HDassert(stream); HDassert(indent >= 0); HDassert(fwidth >= 0); HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth, "Metadata Cache Image Block address:", mdci->addr); HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth, "Metadata Cache Image Block size in bytes:", mdci->size); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5O__mdci_debug() */