xactdesc.c File Reference

#include "postgres.h"
#include "access/transam.h"
#include "access/xact.h"
#include "storage/sinval.h"
#include "storage/standbydefs.h"
#include "utils/timestamp.h"

Include dependency graph for xactdesc.c:

Go to the source code of this file.

Functions
void	ParseCommitRecord (uint8 info, xl_xact_commit *xlrec, xl_xact_parsed_commit *parsed)
void	ParseAbortRecord (uint8 info, xl_xact_abort *xlrec, xl_xact_parsed_abort *parsed)
void	ParsePrepareRecord (uint8 info, xl_xact_prepare *xlrec, xl_xact_parsed_prepare *parsed)
static void	xact_desc_relations (StringInfo buf, char *label, int nrels, RelFileNode *xnodes)
static void	xact_desc_subxacts (StringInfo buf, int nsubxacts, TransactionId *subxacts)
static void	xact_desc_commit (StringInfo buf, uint8 info, xl_xact_commit *xlrec, RepOriginId origin_id)
static void	xact_desc_abort (StringInfo buf, uint8 info, xl_xact_abort *xlrec)
static void	xact_desc_prepare (StringInfo buf, uint8 info, xl_xact_prepare *xlrec)
static void	xact_desc_assignment (StringInfo buf, xl_xact_assignment *xlrec)
void	xact_desc (StringInfo buf, XLogReaderState *record)
const char *	xact_identify (uint8 info)

Function Documentation

ParseAbortRecord()

void ParseAbortRecord	(	uint8	info,
		xl_xact_abort *	xlrec,
		xl_xact_parsed_abort *	parsed
	)

Definition at line 129 of file xactdesc.c.

References xl_xact_dbinfo::dbId, xl_xact_parsed_abort::dbId, MinSizeOfXactAbort, MinSizeOfXactRelfilenodes, MinSizeOfXactSubxacts, xl_xact_relfilenodes::nrels, xl_xact_parsed_abort::nrels, xl_xact_subxacts::nsubxacts, xl_xact_parsed_abort::nsubxacts, xl_xact_origin::origin_lsn, xl_xact_parsed_abort::origin_lsn, xl_xact_origin::origin_timestamp, xl_xact_parsed_abort::origin_timestamp, strlcpy(), xl_xact_subxacts::subxacts, xl_xact_parsed_abort::subxacts, xl_xact_dbinfo::tsId, xl_xact_parsed_abort::tsId, xl_xact_parsed_abort::twophase_gid, xl_xact_parsed_abort::twophase_xid, xl_xact_abort::xact_time, xl_xact_parsed_abort::xact_time, XACT_XINFO_HAS_DBINFO, XACT_XINFO_HAS_GID, XACT_XINFO_HAS_ORIGIN, XACT_XINFO_HAS_RELFILENODES, XACT_XINFO_HAS_SUBXACTS, XACT_XINFO_HAS_TWOPHASE, xl_xact_twophase::xid, xl_xact_xinfo::xinfo, xl_xact_parsed_abort::xinfo, XLOG_XACT_HAS_INFO, xl_xact_relfilenodes::xnodes, and xl_xact_parsed_abort::xnodes.

Referenced by DecodeXactOp(), recoveryStopsAfter(), recoveryStopsBefore(), xact_desc_abort(), and xact_redo().

{
    char       *data = ((char *) xlrec) + MinSizeOfXactAbort;

    memset(parsed, 0, sizeof(*parsed));

    parsed->xinfo = 0;          /* default, if no XLOG_XACT_HAS_INFO is
                                 * present */

    parsed->xact_time = xlrec->xact_time;

    if (info & XLOG_XACT_HAS_INFO)
    {
        xl_xact_xinfo *xl_xinfo = (xl_xact_xinfo *) data;

        parsed->xinfo = xl_xinfo->xinfo;

        data += sizeof(xl_xact_xinfo);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_DBINFO)
    {
        xl_xact_dbinfo *xl_dbinfo = (xl_xact_dbinfo *) data;

        parsed->dbId = xl_dbinfo->dbId;
        parsed->tsId = xl_dbinfo->tsId;

        data += sizeof(xl_xact_dbinfo);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_SUBXACTS)
    {
        xl_xact_subxacts *xl_subxacts = (xl_xact_subxacts *) data;

        parsed->nsubxacts = xl_subxacts->nsubxacts;
        parsed->subxacts = xl_subxacts->subxacts;

        data += MinSizeOfXactSubxacts;
        data += parsed->nsubxacts * sizeof(TransactionId);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_RELFILENODES)
    {
        xl_xact_relfilenodes *xl_relfilenodes = (xl_xact_relfilenodes *) data;

        parsed->nrels = xl_relfilenodes->nrels;
        parsed->xnodes = xl_relfilenodes->xnodes;

        data += MinSizeOfXactRelfilenodes;
        data += xl_relfilenodes->nrels * sizeof(RelFileNode);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_TWOPHASE)
    {
        xl_xact_twophase *xl_twophase = (xl_xact_twophase *) data;

        parsed->twophase_xid = xl_twophase->xid;

        data += sizeof(xl_xact_twophase);

        if (parsed->xinfo & XACT_XINFO_HAS_GID)
        {
            strlcpy(parsed->twophase_gid, data, sizeof(parsed->twophase_gid));
            data += strlen(data) + 1;
        }
    }

    /* Note: no alignment is guaranteed after this point */

    if (parsed->xinfo & XACT_XINFO_HAS_ORIGIN)
    {
        xl_xact_origin xl_origin;

        /* no alignment is guaranteed, so copy onto stack */
        memcpy(&xl_origin, data, sizeof(xl_origin));

        parsed->origin_lsn = xl_origin.origin_lsn;
        parsed->origin_timestamp = xl_origin.origin_timestamp;

        data += sizeof(xl_xact_origin);
    }
}

ParseCommitRecord()

void ParseCommitRecord	(	uint8	info,
		xl_xact_commit *	xlrec,
		xl_xact_parsed_commit *	parsed
	)

Definition at line 34 of file xactdesc.c.

References xl_xact_dbinfo::dbId, xl_xact_parsed_commit::dbId, MinSizeOfXactCommit, MinSizeOfXactInvals, MinSizeOfXactRelfilenodes, MinSizeOfXactSubxacts, xl_xact_invals::msgs, xl_xact_parsed_commit::msgs, xl_xact_invals::nmsgs, xl_xact_parsed_commit::nmsgs, xl_xact_relfilenodes::nrels, xl_xact_parsed_commit::nrels, xl_xact_subxacts::nsubxacts, xl_xact_parsed_commit::nsubxacts, xl_xact_origin::origin_lsn, xl_xact_parsed_commit::origin_lsn, xl_xact_origin::origin_timestamp, xl_xact_parsed_commit::origin_timestamp, strlcpy(), xl_xact_subxacts::subxacts, xl_xact_parsed_commit::subxacts, xl_xact_dbinfo::tsId, xl_xact_parsed_commit::tsId, xl_xact_parsed_commit::twophase_gid, xl_xact_parsed_commit::twophase_xid, xl_xact_commit::xact_time, xl_xact_parsed_commit::xact_time, XACT_XINFO_HAS_DBINFO, XACT_XINFO_HAS_GID, XACT_XINFO_HAS_INVALS, XACT_XINFO_HAS_ORIGIN, XACT_XINFO_HAS_RELFILENODES, XACT_XINFO_HAS_SUBXACTS, XACT_XINFO_HAS_TWOPHASE, xl_xact_twophase::xid, xl_xact_xinfo::xinfo, xl_xact_parsed_commit::xinfo, XLOG_XACT_HAS_INFO, xl_xact_relfilenodes::xnodes, and xl_xact_parsed_commit::xnodes.

Referenced by DecodeXactOp(), recoveryStopsAfter(), recoveryStopsBefore(), xact_desc_commit(), and xact_redo().

{
    char       *data = ((char *) xlrec) + MinSizeOfXactCommit;

    memset(parsed, 0, sizeof(*parsed));

    parsed->xinfo = 0;          /* default, if no XLOG_XACT_HAS_INFO is
                                 * present */

    parsed->xact_time = xlrec->xact_time;

    if (info & XLOG_XACT_HAS_INFO)
    {
        xl_xact_xinfo *xl_xinfo = (xl_xact_xinfo *) data;

        parsed->xinfo = xl_xinfo->xinfo;

        data += sizeof(xl_xact_xinfo);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_DBINFO)
    {
        xl_xact_dbinfo *xl_dbinfo = (xl_xact_dbinfo *) data;

        parsed->dbId = xl_dbinfo->dbId;
        parsed->tsId = xl_dbinfo->tsId;

        data += sizeof(xl_xact_dbinfo);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_SUBXACTS)
    {
        xl_xact_subxacts *xl_subxacts = (xl_xact_subxacts *) data;

        parsed->nsubxacts = xl_subxacts->nsubxacts;
        parsed->subxacts = xl_subxacts->subxacts;

        data += MinSizeOfXactSubxacts;
        data += parsed->nsubxacts * sizeof(TransactionId);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_RELFILENODES)
    {
        xl_xact_relfilenodes *xl_relfilenodes = (xl_xact_relfilenodes *) data;

        parsed->nrels = xl_relfilenodes->nrels;
        parsed->xnodes = xl_relfilenodes->xnodes;

        data += MinSizeOfXactRelfilenodes;
        data += xl_relfilenodes->nrels * sizeof(RelFileNode);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_INVALS)
    {
        xl_xact_invals *xl_invals = (xl_xact_invals *) data;

        parsed->nmsgs = xl_invals->nmsgs;
        parsed->msgs = xl_invals->msgs;

        data += MinSizeOfXactInvals;
        data += xl_invals->nmsgs * sizeof(SharedInvalidationMessage);
    }

    if (parsed->xinfo & XACT_XINFO_HAS_TWOPHASE)
    {
        xl_xact_twophase *xl_twophase = (xl_xact_twophase *) data;

        parsed->twophase_xid = xl_twophase->xid;

        data += sizeof(xl_xact_twophase);

        if (parsed->xinfo & XACT_XINFO_HAS_GID)
        {
            strlcpy(parsed->twophase_gid, data, sizeof(parsed->twophase_gid));
            data += strlen(data) + 1;
        }
    }

    /* Note: no alignment is guaranteed after this point */

    if (parsed->xinfo & XACT_XINFO_HAS_ORIGIN)
    {
        xl_xact_origin xl_origin;

        /* no alignment is guaranteed, so copy onto stack */
        memcpy(&xl_origin, data, sizeof(xl_origin));

        parsed->origin_lsn = xl_origin.origin_lsn;
        parsed->origin_timestamp = xl_origin.origin_timestamp;

        data += sizeof(xl_xact_origin);
    }
}

ParsePrepareRecord()

void ParsePrepareRecord	(	uint8	info,
		xl_xact_prepare *	xlrec,
		xl_xact_parsed_prepare *	parsed
	)

Definition at line 216 of file xactdesc.c.

References xl_xact_parsed_commit::abortnodes, xl_xact_prepare::database, xl_xact_parsed_commit::dbId, xl_xact_prepare::gidlen, MAXALIGN, xl_xact_parsed_commit::msgs, xl_xact_prepare::nabortrels, xl_xact_parsed_commit::nabortrels, xl_xact_prepare::ncommitrels, xl_xact_prepare::ninvalmsgs, xl_xact_parsed_commit::nmsgs, xl_xact_parsed_commit::nrels, xl_xact_prepare::nsubxacts, xl_xact_parsed_commit::nsubxacts, xl_xact_prepare::origin_lsn, xl_xact_parsed_commit::origin_lsn, xl_xact_prepare::origin_timestamp, xl_xact_parsed_commit::origin_timestamp, xl_xact_prepare::prepared_at, xl_xact_parsed_commit::subxacts, xl_xact_parsed_commit::twophase_gid, xl_xact_parsed_commit::twophase_xid, xl_xact_parsed_commit::xact_time, xl_xact_prepare::xid, and xl_xact_parsed_commit::xnodes.

Referenced by xact_desc_prepare().

{
    char       *bufptr;

    bufptr = ((char *) xlrec) + MAXALIGN(sizeof(xl_xact_prepare));

    memset(parsed, 0, sizeof(*parsed));

    parsed->xact_time = xlrec->prepared_at;
    parsed->origin_lsn = xlrec->origin_lsn;
    parsed->origin_timestamp = xlrec->origin_timestamp;
    parsed->twophase_xid = xlrec->xid;
    parsed->dbId = xlrec->database;
    parsed->nsubxacts = xlrec->nsubxacts;
    parsed->nrels = xlrec->ncommitrels;
    parsed->nabortrels = xlrec->nabortrels;
    parsed->nmsgs = xlrec->ninvalmsgs;

    strncpy(parsed->twophase_gid, bufptr, xlrec->gidlen);
    bufptr += MAXALIGN(xlrec->gidlen);

    parsed->subxacts = (TransactionId *) bufptr;
    bufptr += MAXALIGN(xlrec->nsubxacts * sizeof(TransactionId));

    parsed->xnodes = (RelFileNode *) bufptr;
    bufptr += MAXALIGN(xlrec->ncommitrels * sizeof(RelFileNode));

    parsed->abortnodes = (RelFileNode *) bufptr;
    bufptr += MAXALIGN(xlrec->nabortrels * sizeof(RelFileNode));

    parsed->msgs = (SharedInvalidationMessage *) bufptr;
    bufptr += MAXALIGN(xlrec->ninvalmsgs * sizeof(SharedInvalidationMessage));
}

xact_desc()

void xact_desc	(	StringInfo	buf,
		XLogReaderState *	record
	)

Definition at line 364 of file xactdesc.c.

References appendStringInfo(), xact_desc_abort(), xact_desc_assignment(), xact_desc_commit(), xact_desc_prepare(), XLOG_XACT_ABORT, XLOG_XACT_ABORT_PREPARED, XLOG_XACT_ASSIGNMENT, XLOG_XACT_COMMIT, XLOG_XACT_COMMIT_PREPARED, XLOG_XACT_OPMASK, XLOG_XACT_PREPARE, XLogRecGetData, XLogRecGetInfo, XLogRecGetOrigin, and xl_xact_assignment::xtop.

{
    char       *rec = XLogRecGetData(record);
    uint8       info = XLogRecGetInfo(record) & XLOG_XACT_OPMASK;

    if (info == XLOG_XACT_COMMIT || info == XLOG_XACT_COMMIT_PREPARED)
    {
        xl_xact_commit *xlrec = (xl_xact_commit *) rec;

        xact_desc_commit(buf, XLogRecGetInfo(record), xlrec,
                         XLogRecGetOrigin(record));
    }
    else if (info == XLOG_XACT_ABORT || info == XLOG_XACT_ABORT_PREPARED)
    {
        xl_xact_abort *xlrec = (xl_xact_abort *) rec;

        xact_desc_abort(buf, XLogRecGetInfo(record), xlrec);
    }
    else if (info == XLOG_XACT_PREPARE)
    {
        xl_xact_prepare *xlrec = (xl_xact_prepare *) rec;

        xact_desc_prepare(buf, XLogRecGetInfo(record), xlrec);
    }
    else if (info == XLOG_XACT_ASSIGNMENT)
    {
        xl_xact_assignment *xlrec = (xl_xact_assignment *) rec;

        /*
         * Note that we ignore the WAL record's xid, since we're more
         * interested in the top-level xid that issued the record and which
         * xids are being reported here.
         */
        appendStringInfo(buf, "xtop %u: ", xlrec->xtop);
        xact_desc_assignment(buf, xlrec);
    }
}

xact_desc_abort()

static void xact_desc_abort ( StringInfo  buf, uint8  info, xl_xact_abort *  xlrec  )

static

Definition at line 316 of file xactdesc.c.

References appendStringInfo(), appendStringInfoString(), xl_xact_parsed_abort::nrels, xl_xact_parsed_abort::nsubxacts, ParseAbortRecord(), xl_xact_parsed_abort::subxacts, timestamptz_to_str(), TransactionIdIsValid, xl_xact_parsed_abort::twophase_xid, xact_desc_relations(), xact_desc_subxacts(), xl_xact_abort::xact_time, and xl_xact_parsed_abort::xnodes.

Referenced by xact_desc().

{
    xl_xact_parsed_abort parsed;

    ParseAbortRecord(info, xlrec, &parsed);

    /* If this is a prepared xact, show the xid of the original xact */
    if (TransactionIdIsValid(parsed.twophase_xid))
        appendStringInfo(buf, "%u: ", parsed.twophase_xid);

    appendStringInfoString(buf, timestamptz_to_str(xlrec->xact_time));

    xact_desc_relations(buf, "rels", parsed.nrels, parsed.xnodes);
    xact_desc_subxacts(buf, parsed.nsubxacts, parsed.subxacts);
}

xact_desc_assignment()

static void xact_desc_assignment ( StringInfo  buf, xl_xact_assignment *  xlrec  )

static

Definition at line 353 of file xactdesc.c.

References appendStringInfo(), appendStringInfoString(), i, xl_xact_assignment::nsubxacts, and xl_xact_assignment::xsub.

Referenced by xact_desc().

{
    int         i;

    appendStringInfoString(buf, "subxacts:");

    for (i = 0; i < xlrec->nsubxacts; i++)
        appendStringInfo(buf, " %u", xlrec->xsub[i]);
}

xact_desc_commit()

static void xact_desc_commit ( StringInfo  buf, uint8  info, xl_xact_commit *  xlrec, RepOriginId  origin_id  )

static

Definition at line 283 of file xactdesc.c.

References appendStringInfo(), appendStringInfoString(), xl_xact_parsed_commit::dbId, xl_xact_parsed_commit::msgs, xl_xact_parsed_commit::nmsgs, xl_xact_parsed_commit::nrels, xl_xact_parsed_commit::nsubxacts, xl_xact_parsed_commit::origin_lsn, xl_xact_parsed_commit::origin_timestamp, ParseCommitRecord(), standby_desc_invalidations(), xl_xact_parsed_commit::subxacts, timestamptz_to_str(), TransactionIdIsValid, xl_xact_parsed_commit::tsId, xl_xact_parsed_commit::twophase_xid, xact_desc_relations(), xact_desc_subxacts(), xl_xact_commit::xact_time, XACT_XINFO_HAS_ORIGIN, XactCompletionForceSyncCommit, XactCompletionRelcacheInitFileInval, xl_xact_parsed_commit::xinfo, and xl_xact_parsed_commit::xnodes.

Referenced by xact_desc().

{
    xl_xact_parsed_commit parsed;

    ParseCommitRecord(info, xlrec, &parsed);

    /* If this is a prepared xact, show the xid of the original xact */
    if (TransactionIdIsValid(parsed.twophase_xid))
        appendStringInfo(buf, "%u: ", parsed.twophase_xid);

    appendStringInfoString(buf, timestamptz_to_str(xlrec->xact_time));

    xact_desc_relations(buf, "rels", parsed.nrels, parsed.xnodes);
    xact_desc_subxacts(buf, parsed.nsubxacts, parsed.subxacts);

    standby_desc_invalidations(
                        buf, parsed.nmsgs, parsed.msgs, parsed.dbId, parsed.tsId,
                        XactCompletionRelcacheInitFileInval(parsed.xinfo));

    if (XactCompletionForceSyncCommit(parsed.xinfo))
        appendStringInfoString(buf, "; sync");

    if (parsed.xinfo & XACT_XINFO_HAS_ORIGIN)
    {
        appendStringInfo(buf, "; origin: node %u, lsn %X/%X, at %s",
                         origin_id,
                         (uint32) (parsed.origin_lsn >> 32),
                         (uint32) parsed.origin_lsn,
                         timestamptz_to_str(parsed.origin_timestamp));
    }
}

xact_desc_prepare()

static void xact_desc_prepare ( StringInfo  buf, uint8  info, xl_xact_prepare *  xlrec  )

static

Definition at line 333 of file xactdesc.c.

References xl_xact_parsed_commit::abortnodes, appendStringInfo(), appendStringInfoString(), xl_xact_parsed_commit::dbId, xl_xact_prepare::initfileinval, xl_xact_parsed_commit::msgs, xl_xact_parsed_commit::nabortrels, xl_xact_parsed_commit::nmsgs, xl_xact_parsed_commit::nrels, xl_xact_parsed_commit::nsubxacts, ParsePrepareRecord(), standby_desc_invalidations(), xl_xact_parsed_commit::subxacts, timestamptz_to_str(), xl_xact_parsed_commit::tsId, xl_xact_parsed_commit::twophase_gid, xact_desc_relations(), xact_desc_subxacts(), xl_xact_parsed_commit::xact_time, and xl_xact_parsed_commit::xnodes.

Referenced by xact_desc().

{
    xl_xact_parsed_prepare parsed;

    ParsePrepareRecord(info, xlrec, &parsed);

    appendStringInfo(buf, "gid %s: ", parsed.twophase_gid);
    appendStringInfoString(buf, timestamptz_to_str(parsed.xact_time));

    xact_desc_relations(buf, "rels(commit)", parsed.nrels, parsed.xnodes);
    xact_desc_relations(buf, "rels(abort)", parsed.nabortrels,
                        parsed.abortnodes);
    xact_desc_subxacts(buf, parsed.nsubxacts, parsed.subxacts);

    standby_desc_invalidations(
                        buf, parsed.nmsgs, parsed.msgs, parsed.dbId, parsed.tsId,
                        xlrec->initfileinval);
}

xact_desc_relations()

static void xact_desc_relations ( StringInfo  buf, char *  label, int  nrels, RelFileNode *  xnodes  )

static

Definition at line 251 of file xactdesc.c.

References appendStringInfo(), i, MAIN_FORKNUM, pfree(), and relpathperm.

Referenced by xact_desc_abort(), xact_desc_commit(), and xact_desc_prepare().

{
    int     i;

    if (nrels > 0)
    {
        appendStringInfo(buf, "; %s:", label);
        for (i = 0; i < nrels; i++)
        {
            char       *path = relpathperm(xnodes[i], MAIN_FORKNUM);

            appendStringInfo(buf, " %s", path);
            pfree(path);
        }
    }
}

xact_desc_subxacts()

static void xact_desc_subxacts ( StringInfo  buf, int  nsubxacts, TransactionId *  subxacts  )

static

Definition at line 270 of file xactdesc.c.

References appendStringInfo(), appendStringInfoString(), and i.

Referenced by xact_desc_abort(), xact_desc_commit(), and xact_desc_prepare().

{
    int     i;

    if (nsubxacts > 0)
    {
        appendStringInfoString(buf, "; subxacts:");
        for (i = 0; i < nsubxacts; i++)
            appendStringInfo(buf, " %u", subxacts[i]);
    }
}

xact_identify()

const char* xact_identify

(

uint8

info

)

Definition at line 403 of file xactdesc.c.

References XLOG_XACT_ABORT, XLOG_XACT_ABORT_PREPARED, XLOG_XACT_ASSIGNMENT, XLOG_XACT_COMMIT, XLOG_XACT_COMMIT_PREPARED, XLOG_XACT_OPMASK, and XLOG_XACT_PREPARE.

{
    const char *id = NULL;

    switch (info & XLOG_XACT_OPMASK)
    {
        case XLOG_XACT_COMMIT:
            id = "COMMIT";
            break;
        case XLOG_XACT_PREPARE:
            id = "PREPARE";
            break;
        case XLOG_XACT_ABORT:
            id = "ABORT";
            break;
        case XLOG_XACT_COMMIT_PREPARED:
            id = "COMMIT_PREPARED";
            break;
        case XLOG_XACT_ABORT_PREPARED:
            id = "ABORT_PREPARED";
            break;
        case XLOG_XACT_ASSIGNMENT:
            id = "ASSIGNMENT";
            break;
    }

    return id;
}