fis-gtm/sr_port/jnl_write_inctn_rec.c

79 lines
3.3 KiB
C

/****************************************************************
* *
* Copyright 2001, 2012 Fidelity Information Services, Inc *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#ifdef VMS
#include <descrip.h> /* Required for gtmsource.h */
#endif
#include "gtm_inet.h"
#include "gtm_time.h"
#include "gdsroot.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "gdsblk.h"
#include "gdsfhead.h"
#include "filestruct.h"
#include "jnl.h"
#include "jnl_write.h"
#include "repl_msg.h"
#include "gtmsource.h"
#include "jnl_get_checksum.h"
GBLREF jnlpool_ctl_ptr_t jnlpool_ctl;
GBLREF jnl_gbls_t jgbl;
GBLREF inctn_opcode_t inctn_opcode;
GBLREF inctn_detail_t inctn_detail; /* holds detail to fill in to inctn jnl record */
void jnl_write_inctn_rec(sgmnt_addrs *csa)
{
struct_jrec_inctn inctn_record;
jnl_private_control *jpc;
DEBUG_ONLY(int inctn_detail_size;)
assert(csa->now_crit);
jpc = csa->jnl;
assert(0 != jpc->pini_addr);
assert((csa->ti->early_tn == csa->ti->curr_tn) || (csa->ti->early_tn == csa->ti->curr_tn + 1));
inctn_record.prefix.jrec_type = JRT_INCTN;
inctn_record.prefix.forwptr = INCTN_RECLEN;
assert(&inctn_detail.blknum_struct.suffix == &inctn_detail.blks2upgrd_struct.suffix);
DEBUG_ONLY(inctn_detail_size = OFFSETOF(inctn_detail_blknum_t, suffix) + SIZEOF(inctn_detail.blknum_struct.suffix);)
assert(0 == (inctn_detail_size % JNL_REC_START_BNDRY));
assert(SIZEOF(inctn_detail) == inctn_detail_size);
inctn_detail.blknum_struct.suffix.backptr = INCTN_RECLEN;
inctn_detail.blknum_struct.suffix.suffix_code = JNL_REC_SUFFIX_CODE;
inctn_record.prefix.pini_addr = (0 == jpc->pini_addr) ? JNL_HDR_LEN : jpc->pini_addr;
/* At this point jgbl.gbl_jrec_time should be set by the caller */
assert(jgbl.gbl_jrec_time);
inctn_record.prefix.time = jgbl.gbl_jrec_time;
inctn_record.prefix.tn = csa->ti->curr_tn;
inctn_record.prefix.checksum = INIT_CHECKSUM_SEED;
assert((inctn_opcode_total > inctn_opcode) && (inctn_invalid_op < inctn_opcode));
/* Assert that the maximum inctn opcode # will fit in the "opcode" field in the inctn jnl record.
* But before that, assert opcode is at same offset in all the individual inctn_detail_* structure types.
*/
assert(&inctn_detail.blknum_struct.opcode == &inctn_detail.blks2upgrd_struct.opcode);
assert(inctn_opcode_total < (1 << (8 * SIZEOF(inctn_detail.blknum_struct.opcode))));
inctn_detail.blknum_struct.opcode = inctn_opcode; /* fill in opcode from the global variable */
/* Instead of having a multi-line switch statement that copies exactly those fields which are necessary, we
* copy the entire structure (16 bytes at this point). Pipeline breaks are considered more costly than a few
* unnecessary memory-to-memory copies.
*/
inctn_detail.blknum_struct.filler_uint4 = 0;
inctn_detail.blknum_struct.filler_short = 0;
inctn_record.detail = inctn_detail;
inctn_record.prefix.checksum = compute_checksum(INIT_CHECKSUM_SEED, (uint4 *)&inctn_record, SIZEOF(struct_jrec_inctn));
jnl_write(jpc, JRT_INCTN, (jnl_record *)&inctn_record, NULL, NULL);
}