heapdesc.c File Reference

#include "postgres.h"
#include "access/heapam_xlog.h"
#include "access/rmgrdesc_utils.h"

Include dependency graph for heapdesc.c:

Go to the source code of this file.

Functions
static void	infobits_desc (StringInfo buf, uint8 infobits, const char *keyname)
static void	truncate_flags_desc (StringInfo buf, uint8 flags)
static void	plan_elem_desc (StringInfo buf, void *plan, void *data)
void	heap_xlog_deserialize_prune_and_freeze (char *cursor, uint8 flags, int *nplans, xlhp_freeze_plan **plans, OffsetNumber **frz_offsets, int *nredirected, OffsetNumber **redirected, int *ndead, OffsetNumber **nowdead, int *nunused, OffsetNumber **nowunused)
void	heap_desc (StringInfo buf, XLogReaderState *record)
void	heap2_desc (StringInfo buf, XLogReaderState *record)
const char *	heap_identify (uint8 info)
const char *	heap2_identify (uint8 info)

Function Documentation

heap2_desc()

void heap2_desc	(	StringInfo	buf,
		XLogReaderState *	record
	)

Definition at line 260 of file heapdesc.c.

{
    char       *rec = XLogRecGetData(record);
    uint8       info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
 
    info &= XLOG_HEAP_OPMASK;
    if (info == XLOG_HEAP2_PRUNE_ON_ACCESS ||
        info == XLOG_HEAP2_PRUNE_VACUUM_SCAN ||
        info == XLOG_HEAP2_PRUNE_VACUUM_CLEANUP)
    {
        xl_heap_prune *xlrec = (xl_heap_prune *) rec;
 
        if (xlrec->flags & XLHP_HAS_CONFLICT_HORIZON)
        {
            TransactionId conflict_xid;
 
            memcpy(&conflict_xid, rec + SizeOfHeapPrune, sizeof(TransactionId));
 
            appendStringInfo(buf, "snapshotConflictHorizon: %u",
                             conflict_xid);
        }
 
        appendStringInfo(buf, ", isCatalogRel: %c",
                         xlrec->flags & XLHP_IS_CATALOG_REL ? 'T' : 'F');
 
        if (XLogRecHasBlockData(record, 0))
        {
            Size        datalen;
            OffsetNumber *redirected;
            OffsetNumber *nowdead;
            OffsetNumber *nowunused;
            int         nredirected;
            int         nunused;
            int         ndead;
            int         nplans;
            xlhp_freeze_plan *plans;
            OffsetNumber *frz_offsets;
 
            char       *cursor = XLogRecGetBlockData(record, 0, &datalen);
 
            heap_xlog_deserialize_prune_and_freeze(cursor, xlrec->flags,
                                                   &nplans, &plans, &frz_offsets,
                                                   &nredirected, &redirected,
                                                   &ndead, &nowdead,
                                                   &nunused, &nowunused);
 
            appendStringInfo(buf, ", nplans: %u, nredirected: %u, ndead: %u, nunused: %u",
                             nplans, nredirected, ndead, nunused);
 
            if (nplans > 0)
            {
                appendStringInfoString(buf, ", plans:");
                array_desc(buf, plans, sizeof(xlhp_freeze_plan), nplans,
                           &plan_elem_desc, &frz_offsets);
            }
 
            if (nredirected > 0)
            {
                appendStringInfoString(buf, ", redirected:");
                array_desc(buf, redirected, sizeof(OffsetNumber) * 2,
                           nredirected, &redirect_elem_desc, NULL);
            }
 
            if (ndead > 0)
            {
                appendStringInfoString(buf, ", dead:");
                array_desc(buf, nowdead, sizeof(OffsetNumber), ndead,
                           &offset_elem_desc, NULL);
            }
 
            if (nunused > 0)
            {
                appendStringInfoString(buf, ", unused:");
                array_desc(buf, nowunused, sizeof(OffsetNumber), nunused,
                           &offset_elem_desc, NULL);
            }
        }
    }
    else if (info == XLOG_HEAP2_VISIBLE)
    {
        xl_heap_visible *xlrec = (xl_heap_visible *) rec;
 
        appendStringInfo(buf, "snapshotConflictHorizon: %u, flags: 0x%02X",
                         xlrec->snapshotConflictHorizon, xlrec->flags);
    }
    else if (info == XLOG_HEAP2_MULTI_INSERT)
    {
        xl_heap_multi_insert *xlrec = (xl_heap_multi_insert *) rec;
        bool        isinit = (XLogRecGetInfo(record) & XLOG_HEAP_INIT_PAGE) != 0;
 
        appendStringInfo(buf, "ntuples: %d, flags: 0x%02X", xlrec->ntuples,
                         xlrec->flags);
 
        if (XLogRecHasBlockData(record, 0) && !isinit)
        {
            appendStringInfoString(buf, ", offsets:");
            array_desc(buf, xlrec->offsets, sizeof(OffsetNumber),
                       xlrec->ntuples, &offset_elem_desc, NULL);
        }
    }
    else if (info == XLOG_HEAP2_LOCK_UPDATED)
    {
        xl_heap_lock_updated *xlrec = (xl_heap_lock_updated *) rec;
 
        appendStringInfo(buf, "xmax: %u, off: %u, ",
                         xlrec->xmax, xlrec->offnum);
        infobits_desc(buf, xlrec->infobits_set, "infobits");
        appendStringInfo(buf, ", flags: 0x%02X", xlrec->flags);
    }
    else if (info == XLOG_HEAP2_NEW_CID)
    {
        xl_heap_new_cid *xlrec = (xl_heap_new_cid *) rec;
 
        appendStringInfo(buf, "rel: %u/%u/%u, tid: %u/%u",
                         xlrec->target_locator.spcOid,
                         xlrec->target_locator.dbOid,
                         xlrec->target_locator.relNumber,
                         ItemPointerGetBlockNumber(&(xlrec->target_tid)),
                         ItemPointerGetOffsetNumber(&(xlrec->target_tid)));
        appendStringInfo(buf, ", cmin: %u, cmax: %u, combo: %u",
                         xlrec->cmin, xlrec->cmax, xlrec->combocid);
    }
}

References appendStringInfo(), appendStringInfoString(), array_desc(), buf, xl_heap_new_cid::cmax, xl_heap_new_cid::cmin, xl_heap_new_cid::combocid, RelFileLocator::dbOid, xl_heap_multi_insert::flags, xl_heap_prune::flags, xl_heap_lock_updated::flags, xl_heap_visible::flags, heap_xlog_deserialize_prune_and_freeze(), infobits_desc(), xl_heap_lock_updated::infobits_set, ItemPointerGetBlockNumber(), ItemPointerGetOffsetNumber(), xl_heap_multi_insert::ntuples, xl_heap_lock_updated::offnum, offset_elem_desc(), xl_heap_multi_insert::offsets, plan_elem_desc(), redirect_elem_desc(), RelFileLocator::relNumber, SizeOfHeapPrune, xl_heap_visible::snapshotConflictHorizon, RelFileLocator::spcOid, xl_heap_new_cid::target_locator, xl_heap_new_cid::target_tid, XLHP_HAS_CONFLICT_HORIZON, XLHP_IS_CATALOG_REL, XLOG_HEAP2_LOCK_UPDATED, XLOG_HEAP2_MULTI_INSERT, XLOG_HEAP2_NEW_CID, XLOG_HEAP2_PRUNE_ON_ACCESS, XLOG_HEAP2_PRUNE_VACUUM_CLEANUP, XLOG_HEAP2_PRUNE_VACUUM_SCAN, XLOG_HEAP2_VISIBLE, XLOG_HEAP_INIT_PAGE, XLOG_HEAP_OPMASK, XLogRecGetBlockData(), XLogRecGetData, XLogRecGetInfo, XLogRecHasBlockData, XLR_INFO_MASK, and xl_heap_lock_updated::xmax.

heap2_identify()

const char* heap2_identify

(

uint8

info

)

Definition at line 430 of file heapdesc.c.

{
    const char *id = NULL;
 
    switch (info & ~XLR_INFO_MASK)
    {
        case XLOG_HEAP2_PRUNE_ON_ACCESS:
            id = "PRUNE_ON_ACCESS";
            break;
        case XLOG_HEAP2_PRUNE_VACUUM_SCAN:
            id = "PRUNE_VACUUM_SCAN";
            break;
        case XLOG_HEAP2_PRUNE_VACUUM_CLEANUP:
            id = "PRUNE_VACUUM_CLEANUP";
            break;
        case XLOG_HEAP2_VISIBLE:
            id = "VISIBLE";
            break;
        case XLOG_HEAP2_MULTI_INSERT:
            id = "MULTI_INSERT";
            break;
        case XLOG_HEAP2_MULTI_INSERT | XLOG_HEAP_INIT_PAGE:
            id = "MULTI_INSERT+INIT";
            break;
        case XLOG_HEAP2_LOCK_UPDATED:
            id = "LOCK_UPDATED";
            break;
        case XLOG_HEAP2_NEW_CID:
            id = "NEW_CID";
            break;
        case XLOG_HEAP2_REWRITE:
            id = "REWRITE";
            break;
    }
 
    return id;
}

References XLOG_HEAP2_LOCK_UPDATED, XLOG_HEAP2_MULTI_INSERT, XLOG_HEAP2_NEW_CID, XLOG_HEAP2_PRUNE_ON_ACCESS, XLOG_HEAP2_PRUNE_VACUUM_CLEANUP, XLOG_HEAP2_PRUNE_VACUUM_SCAN, XLOG_HEAP2_REWRITE, XLOG_HEAP2_VISIBLE, XLOG_HEAP_INIT_PAGE, and XLR_INFO_MASK.

heap_desc()

void heap_desc	(	StringInfo	buf,
		XLogReaderState *	record
	)

Definition at line 183 of file heapdesc.c.

{
    char       *rec = XLogRecGetData(record);
    uint8       info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
 
    info &= XLOG_HEAP_OPMASK;
    if (info == XLOG_HEAP_INSERT)
    {
        xl_heap_insert *xlrec = (xl_heap_insert *) rec;
 
        appendStringInfo(buf, "off: %u, flags: 0x%02X",
                         xlrec->offnum,
                         xlrec->flags);
    }
    else if (info == XLOG_HEAP_DELETE)
    {
        xl_heap_delete *xlrec = (xl_heap_delete *) rec;
 
        appendStringInfo(buf, "xmax: %u, off: %u, ",
                         xlrec->xmax, xlrec->offnum);
        infobits_desc(buf, xlrec->infobits_set, "infobits");
        appendStringInfo(buf, ", flags: 0x%02X", xlrec->flags);
    }
    else if (info == XLOG_HEAP_UPDATE)
    {
        xl_heap_update *xlrec = (xl_heap_update *) rec;
 
        appendStringInfo(buf, "old_xmax: %u, old_off: %u, ",
                         xlrec->old_xmax, xlrec->old_offnum);
        infobits_desc(buf, xlrec->old_infobits_set, "old_infobits");
        appendStringInfo(buf, ", flags: 0x%02X, new_xmax: %u, new_off: %u",
                         xlrec->flags, xlrec->new_xmax, xlrec->new_offnum);
    }
    else if (info == XLOG_HEAP_HOT_UPDATE)
    {
        xl_heap_update *xlrec = (xl_heap_update *) rec;
 
        appendStringInfo(buf, "old_xmax: %u, old_off: %u, ",
                         xlrec->old_xmax, xlrec->old_offnum);
        infobits_desc(buf, xlrec->old_infobits_set, "old_infobits");
        appendStringInfo(buf, ", flags: 0x%02X, new_xmax: %u, new_off: %u",
                         xlrec->flags, xlrec->new_xmax, xlrec->new_offnum);
    }
    else if (info == XLOG_HEAP_TRUNCATE)
    {
        xl_heap_truncate *xlrec = (xl_heap_truncate *) rec;
 
        truncate_flags_desc(buf, xlrec->flags);
        appendStringInfo(buf, ", nrelids: %u", xlrec->nrelids);
        appendStringInfoString(buf, ", relids:");
        array_desc(buf, xlrec->relids, sizeof(Oid), xlrec->nrelids,
                   &oid_elem_desc, NULL);
    }
    else if (info == XLOG_HEAP_CONFIRM)
    {
        xl_heap_confirm *xlrec = (xl_heap_confirm *) rec;
 
        appendStringInfo(buf, "off: %u", xlrec->offnum);
    }
    else if (info == XLOG_HEAP_LOCK)
    {
        xl_heap_lock *xlrec = (xl_heap_lock *) rec;
 
        appendStringInfo(buf, "xmax: %u, off: %u, ",
                         xlrec->xmax, xlrec->offnum);
        infobits_desc(buf, xlrec->infobits_set, "infobits");
        appendStringInfo(buf, ", flags: 0x%02X", xlrec->flags);
    }
    else if (info == XLOG_HEAP_INPLACE)
    {
        xl_heap_inplace *xlrec = (xl_heap_inplace *) rec;
 
        appendStringInfo(buf, "off: %u", xlrec->offnum);
    }
}

References appendStringInfo(), appendStringInfoString(), array_desc(), buf, xl_heap_delete::flags, xl_heap_truncate::flags, xl_heap_insert::flags, xl_heap_update::flags, xl_heap_lock::flags, infobits_desc(), xl_heap_delete::infobits_set, xl_heap_lock::infobits_set, xl_heap_update::new_offnum, xl_heap_update::new_xmax, xl_heap_truncate::nrelids, xl_heap_delete::offnum, xl_heap_insert::offnum, xl_heap_lock::offnum, xl_heap_confirm::offnum, xl_heap_inplace::offnum, oid_elem_desc(), xl_heap_update::old_infobits_set, xl_heap_update::old_offnum, xl_heap_update::old_xmax, xl_heap_truncate::relids, truncate_flags_desc(), XLOG_HEAP_CONFIRM, XLOG_HEAP_DELETE, XLOG_HEAP_HOT_UPDATE, XLOG_HEAP_INPLACE, XLOG_HEAP_INSERT, XLOG_HEAP_LOCK, XLOG_HEAP_OPMASK, XLOG_HEAP_TRUNCATE, XLOG_HEAP_UPDATE, XLogRecGetData, XLogRecGetInfo, XLR_INFO_MASK, xl_heap_delete::xmax, and xl_heap_lock::xmax.

heap_identify()

const char* heap_identify

(

uint8

info

)

Definition at line 385 of file heapdesc.c.

{
    const char *id = NULL;
 
    switch (info & ~XLR_INFO_MASK)
    {
        case XLOG_HEAP_INSERT:
            id = "INSERT";
            break;
        case XLOG_HEAP_INSERT | XLOG_HEAP_INIT_PAGE:
            id = "INSERT+INIT";
            break;
        case XLOG_HEAP_DELETE:
            id = "DELETE";
            break;
        case XLOG_HEAP_UPDATE:
            id = "UPDATE";
            break;
        case XLOG_HEAP_UPDATE | XLOG_HEAP_INIT_PAGE:
            id = "UPDATE+INIT";
            break;
        case XLOG_HEAP_HOT_UPDATE:
            id = "HOT_UPDATE";
            break;
        case XLOG_HEAP_HOT_UPDATE | XLOG_HEAP_INIT_PAGE:
            id = "HOT_UPDATE+INIT";
            break;
        case XLOG_HEAP_TRUNCATE:
            id = "TRUNCATE";
            break;
        case XLOG_HEAP_CONFIRM:
            id = "HEAP_CONFIRM";
            break;
        case XLOG_HEAP_LOCK:
            id = "LOCK";
            break;
        case XLOG_HEAP_INPLACE:
            id = "INPLACE";
            break;
    }
 
    return id;
}

References XLOG_HEAP_CONFIRM, XLOG_HEAP_DELETE, XLOG_HEAP_HOT_UPDATE, XLOG_HEAP_INIT_PAGE, XLOG_HEAP_INPLACE, XLOG_HEAP_INSERT, XLOG_HEAP_LOCK, XLOG_HEAP_TRUNCATE, XLOG_HEAP_UPDATE, and XLR_INFO_MASK.

heap_xlog_deserialize_prune_and_freeze()

void heap_xlog_deserialize_prune_and_freeze	(	char *	cursor,
		uint8	flags,
		int *	nplans,
		xlhp_freeze_plan **	plans,
		OffsetNumber **	frz_offsets,
		int *	nredirected,
		OffsetNumber **	redirected,
		int *	ndead,
		OffsetNumber **	nowdead,
		int *	nunused,
		OffsetNumber **	nowunused
	)

Definition at line 104 of file heapdesc.c.

{
    if (flags & XLHP_HAS_FREEZE_PLANS)
    {
        xlhp_freeze_plans *freeze_plans = (xlhp_freeze_plans *) cursor;
 
        *nplans = freeze_plans->nplans;
        Assert(*nplans > 0);
        *plans = freeze_plans->plans;
 
        cursor += offsetof(xlhp_freeze_plans, plans);
        cursor += sizeof(xlhp_freeze_plan) * *nplans;
    }
    else
    {
        *nplans = 0;
        *plans = NULL;
    }
 
    if (flags & XLHP_HAS_REDIRECTIONS)
    {
        xlhp_prune_items *subrecord = (xlhp_prune_items *) cursor;
 
        *nredirected = subrecord->ntargets;
        Assert(*nredirected > 0);
        *redirected = &subrecord->data[0];
 
        cursor += offsetof(xlhp_prune_items, data);
        cursor += sizeof(OffsetNumber[2]) * *nredirected;
    }
    else
    {
        *nredirected = 0;
        *redirected = NULL;
    }
 
    if (flags & XLHP_HAS_DEAD_ITEMS)
    {
        xlhp_prune_items *subrecord = (xlhp_prune_items *) cursor;
 
        *ndead = subrecord->ntargets;
        Assert(*ndead > 0);
        *nowdead = subrecord->data;
 
        cursor += offsetof(xlhp_prune_items, data);
        cursor += sizeof(OffsetNumber) * *ndead;
    }
    else
    {
        *ndead = 0;
        *nowdead = NULL;
    }
 
    if (flags & XLHP_HAS_NOW_UNUSED_ITEMS)
    {
        xlhp_prune_items *subrecord = (xlhp_prune_items *) cursor;
 
        *nunused = subrecord->ntargets;
        Assert(*nunused > 0);
        *nowunused = subrecord->data;
 
        cursor += offsetof(xlhp_prune_items, data);
        cursor += sizeof(OffsetNumber) * *nunused;
    }
    else
    {
        *nunused = 0;
        *nowunused = NULL;
    }
 
    *frz_offsets = (OffsetNumber *) cursor;
}

References Assert, xlhp_prune_items::data, data, xlhp_freeze_plans::nplans, xlhp_prune_items::ntargets, xlhp_freeze_plans::plans, XLHP_HAS_DEAD_ITEMS, XLHP_HAS_FREEZE_PLANS, XLHP_HAS_NOW_UNUSED_ITEMS, and XLHP_HAS_REDIRECTIONS.

Referenced by heap2_desc(), and heap_xlog_prune_freeze().

infobits_desc()

static void infobits_desc ( StringInfo  buf, uint8  infobits, const char *  keyname  )

static

Definition at line 25 of file heapdesc.c.

{
    appendStringInfo(buf, "%s: [", keyname);
 
    Assert(buf->data[buf->len - 1] != ' ');
 
    if (infobits & XLHL_XMAX_IS_MULTI)
        appendStringInfoString(buf, "IS_MULTI, ");
    if (infobits & XLHL_XMAX_LOCK_ONLY)
        appendStringInfoString(buf, "LOCK_ONLY, ");
    if (infobits & XLHL_XMAX_EXCL_LOCK)
        appendStringInfoString(buf, "EXCL_LOCK, ");
    if (infobits & XLHL_XMAX_KEYSHR_LOCK)
        appendStringInfoString(buf, "KEYSHR_LOCK, ");
    if (infobits & XLHL_KEYS_UPDATED)
        appendStringInfoString(buf, "KEYS_UPDATED, ");
 
    if (buf->data[buf->len - 1] == ' ')
    {
        /* Truncate-away final unneeded ", "  */
        Assert(buf->data[buf->len - 2] == ',');
        buf->len -= 2;
        buf->data[buf->len] = '\0';
    }
 
    appendStringInfoChar(buf, ']');
}

References appendStringInfo(), appendStringInfoChar(), appendStringInfoString(), Assert, buf, XLHL_KEYS_UPDATED, XLHL_XMAX_EXCL_LOCK, XLHL_XMAX_IS_MULTI, XLHL_XMAX_KEYSHR_LOCK, and XLHL_XMAX_LOCK_ONLY.

Referenced by heap2_desc(), and heap_desc().

plan_elem_desc()

static void plan_elem_desc ( StringInfo  buf, void *  plan, void *  data  )

static

Definition at line 75 of file heapdesc.c.

{
    xlhp_freeze_plan *new_plan = (xlhp_freeze_plan *) plan;
    OffsetNumber **offsets = data;
 
    appendStringInfo(buf, "{ xmax: %u, infomask: %u, infomask2: %u, ntuples: %u",
                     new_plan->xmax,
                     new_plan->t_infomask, new_plan->t_infomask2,
                     new_plan->ntuples);
 
    appendStringInfoString(buf, ", offsets:");
    array_desc(buf, *offsets, sizeof(OffsetNumber), new_plan->ntuples,
               &offset_elem_desc, NULL);
 
    *offsets += new_plan->ntuples;
 
    appendStringInfoString(buf, " }");
}

References appendStringInfo(), appendStringInfoString(), array_desc(), buf, data, xlhp_freeze_plan::ntuples, offset_elem_desc(), plan, xlhp_freeze_plan::t_infomask, xlhp_freeze_plan::t_infomask2, and xlhp_freeze_plan::xmax.

Referenced by heap2_desc().

truncate_flags_desc()

static void truncate_flags_desc ( StringInfo  buf, uint8  flags  )

static

Definition at line 54 of file heapdesc.c.

{
    appendStringInfoString(buf, "flags: [");
 
    if (flags & XLH_TRUNCATE_CASCADE)
        appendStringInfoString(buf, "CASCADE, ");
    if (flags & XLH_TRUNCATE_RESTART_SEQS)
        appendStringInfoString(buf, "RESTART_SEQS, ");
 
    if (buf->data[buf->len - 1] == ' ')
    {
        /* Truncate-away final unneeded ", "  */
        Assert(buf->data[buf->len - 2] == ',');
        buf->len -= 2;
        buf->data[buf->len] = '\0';
    }
 
    appendStringInfoChar(buf, ']');
}

References appendStringInfoChar(), appendStringInfoString(), Assert, buf, XLH_TRUNCATE_CASCADE, and XLH_TRUNCATE_RESTART_SEQS.

Referenced by heap_desc().