77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2012 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 "gtm_string.h"
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#include "gtm_time.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 "gdscc.h"
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#include "jnl.h"
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#include "jnl_write.h"
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#include "jnl_write_pblk.h"
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#include "min_max.h"
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#include "jnl_get_checksum.h"
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GBLREF jnl_gbls_t jgbl;
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GBLREF boolean_t dse_running;
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void jnl_write_pblk(sgmnt_addrs *csa, cw_set_element *cse, blk_hdr_ptr_t buffer, uint4 com_csum)
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{
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struct_jrec_blk pblk_record;
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int tmp_jrec_size, jrec_size, zero_len;
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jnl_format_buffer blk_trailer;
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char local_buff[JNL_REC_START_BNDRY + JREC_SUFFIX_SIZE];
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jrec_suffix *suffix;
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jnl_private_control *jpc;
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assert(csa->now_crit);
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jpc = csa->jnl;
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assert(0 != jpc->pini_addr);
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pblk_record.prefix.jrec_type = JRT_PBLK;
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pblk_record.prefix.pini_addr = (0 == jpc->pini_addr) ? JNL_HDR_LEN : jpc->pini_addr;
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pblk_record.prefix.tn = csa->ti->curr_tn;
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/* At this point jgbl.gbl_jrec_time should be set by the caller */
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assert(jgbl.gbl_jrec_time);
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pblk_record.prefix.time = jgbl.gbl_jrec_time;
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pblk_record.blknum = cse->blk;
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/* in case we have a bad block-size, we dont want to write a PBLK larger than the GDS block size (maximum block size).
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* in addition, check that checksum computed in t_end/tp_tend did take the adjusted bsiz into consideration.
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*/
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assert(buffer->bsiz <= csa->hdr->blk_size || dse_running);
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pblk_record.bsiz = MIN(csa->hdr->blk_size, buffer->bsiz);
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assert((pblk_record.bsiz == buffer->bsiz) ||
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(cse->blk_checksum == jnl_get_checksum((uint4 *)buffer, NULL, pblk_record.bsiz)));
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assert(pblk_record.bsiz >= SIZEOF(blk_hdr) || dse_running);
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pblk_record.ondsk_blkver = cse->ondsk_blkver;
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tmp_jrec_size = (int)FIXED_PBLK_RECLEN + pblk_record.bsiz + JREC_SUFFIX_SIZE;
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jrec_size = ROUND_UP2(tmp_jrec_size, JNL_REC_START_BNDRY);
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zero_len = jrec_size - tmp_jrec_size;
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blk_trailer.buff = local_buff + (JNL_REC_START_BNDRY - zero_len);
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memset(blk_trailer.buff, 0, zero_len);
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blk_trailer.record_size = zero_len + JREC_SUFFIX_SIZE;
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suffix = (jrec_suffix *)&local_buff[JNL_REC_START_BNDRY];
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pblk_record.prefix.forwptr = suffix->backptr = jrec_size;
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COMPUTE_PBLK_CHECKSUM(cse->blk_checksum, &pblk_record, com_csum, pblk_record.prefix.checksum);
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suffix->suffix_code = JNL_REC_SUFFIX_CODE;
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assert(SIZEOF(uint4) == SIZEOF(jrec_suffix));
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jnl_write(jpc, JRT_PBLK, (jnl_record *)&pblk_record, buffer, &blk_trailer);
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}
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