110 lines
4.5 KiB
C
110 lines
4.5 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2010 Fidelity Information Services, Inc *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include <stddef.h>
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#include <math.h> /* needed for handling of epoch_interval (EPOCH_SECOND2SECOND macro uses ceil) */
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#include "iosp.h"
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#include "gtm_string.h"
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#include "gdsroot.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsbt.h"
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#include "gdsblk.h"
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#include "gdsfhead.h"
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#include "filestruct.h"
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#include "jnl.h"
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#include "min_max.h" /* for JNL_MAX_RECLEN macro */
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#ifdef GTM_CRYPT
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#include "gtmcrypt.h"
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#endif
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GBLREF jnl_gbls_t jgbl;
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DEBUG_ONLY(GBLREF boolean_t mupip_jnl_recover;)
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void set_jnl_info(gd_region *reg, jnl_create_info *jnl_info)
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{
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sgmnt_addrs *csa;
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sgmnt_data_ptr_t csd;
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uint4 align_autoswitch;
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csa = &FILE_INFO(reg)->s_addrs;
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csd = csa->hdr;
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/* since journaling is already enabled at this stage, the MUPIP SET JOURNAL/MUPIP CREATE command that enabled journaling
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* should have initialized the journal options in the db file header to default values.
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* therefore all except jnl_deq (extension) should be non-zero. the following asserts check for that.
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*/
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assert(mupip_jnl_recover || csa->now_crit);
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assert(csd->jnl_alq);
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assert(csd->alignsize);
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assert(csd->autoswitchlimit);
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assert(csd->jnl_buffer_size);
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assert(csd->epoch_interval);
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jnl_info->csd = csd;
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/* note that csd->jnl_deq can be 0 since a zero journal extension size is accepted */
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jnl_info->status = jnl_info->status2 = SS_NORMAL;
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jnl_info->no_rename = jnl_info->no_prev_link = FALSE;
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UNIX_ONLY(
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if ((JNL_MIN_ALIGNSIZE * DISK_BLOCK_SIZE) > csd->alignsize)
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{ /* Possible if a pre-V54001 journaled db (which allows alignsize to be as low as 16K) is used
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* with V54001 and higher (where minimum allowed alignsize is 128K). Fix fileheader to be
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* at least minimum (i.e. an on-the-fly upgrade of the db file header).
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*/
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csd->alignsize = (JNL_MIN_ALIGNSIZE * DISK_BLOCK_SIZE);
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}
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)
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jnl_info->alignsize = csd->alignsize;
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jnl_info->before_images = csd->jnl_before_image;
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jnl_info->buffer = csd->jnl_buffer_size;
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jnl_info->epoch_interval = csd->epoch_interval;
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jnl_info->fn = reg->dyn.addr->fname;
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jnl_info->fn_len = reg->dyn.addr->fname_len;
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jnl_info->jnl_len = csd->jnl_file_len;
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memcpy(jnl_info->jnl, csd->jnl_file_name, jnl_info->jnl_len);
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if (!jgbl.forw_phase_recovery)
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jnl_info->reg_seqno = csd->reg_seqno;
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else
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jnl_info->reg_seqno = jgbl.mur_jrec_seqno;
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jnl_info->jnl_state = csd->jnl_state; /* Used in cre_jnl_file() */
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assert(JNL_ALLOWED(jnl_info));
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jnl_info->repl_state = csd->repl_state;
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JNL_MAX_RECLEN(jnl_info, csd);
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UNIX_ONLY(
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if (JNL_ALLOC_MIN > csd->jnl_alq)
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{ /* Possible if a pre-V54001 journaled db (which allows allocation values as low as 10) is used
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* with V54001 and higher (where minimum allowed allocation value is 200). Fix fileheader to be
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* at least minimum (an on-the-fly upgrade of the db file header).
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*/
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csd->jnl_alq = JNL_ALLOC_MIN;
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}
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)
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jnl_info->alloc = csd->jnl_alq;
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jnl_info->extend = csd->jnl_deq;
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jnl_info->autoswitchlimit = csd->autoswitchlimit;
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/* ensure autoswitchlimit is aligned to the nearest extension boundary
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* since set_jnl_info only uses already established allocation/extension/autoswitchlimit values,
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* as long as the establisher (MUPIP SET JOURNAL/MUPIP CREATE) ensures that autoswitchlimit is aligned
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* we do not need to do anything here.
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* t_end/tp_tend earlier used to round up their transaction's journal space requirements
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* to the nearest extension boundary to compare against the autoswitchlimit later.
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* but now with autoswitchlimit being aligned at an extension boundary, they can
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* compare their journal requirements directly against the autoswitchlimit.
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*/
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assert(jnl_info->autoswitchlimit == ALIGNED_ROUND_DOWN(jnl_info->autoswitchlimit, jnl_info->alloc, jnl_info->extend));
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jnl_info->blks_to_upgrd = csd->blks_to_upgrd; /* will be copied over to EPOCH record in newly created journal */
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jnl_info->free_blocks = csd->trans_hist.free_blocks; /* will be copied over to EPOCH record in newly created journal */
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jnl_info->total_blks = csd->trans_hist.total_blks; /* will be copied over to EPOCH record in newly created journal */
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GTMCRYPT_ONLY(
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GTMCRYPT_COPY_HASH(csd, jnl_info);
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)
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}
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