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postgres/src/backend/utils/misc/pg_controldata.c
Tom Lane 382ceffdf7 Phase 3 of pgindent updates. 
Don't move parenthesized lines to the left, even if that means they
flow past the right margin.

By default, BSD indent lines up statement continuation lines that are
within parentheses so that they start just to the right of the preceding
left parenthesis.  However, traditionally, if that resulted in the
continuation line extending to the right of the desired right margin,
then indent would push it left just far enough to not overrun the margin,
if it could do so without making the continuation line start to the left of
the current statement indent.  That makes for a weird mix of indentations
unless one has been completely rigid about never violating the 80-column
limit.

This behavior has been pretty universally panned by Postgres developers.
Hence, disable it with indent's new -lpl switch, so that parenthesized
lines are always lined up with the preceding left paren.

This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.

Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 15:35:54 -04:00

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/*-------------------------------------------------------------------------
*
* pg_controldata.c
*
* Routines to expose the contents of the control data file via
* a set of SQL functions.
*
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/backend/utils/misc/pg_controldata.c
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "funcapi.h"
#include "miscadmin.h"
#include "access/htup_details.h"
#include "access/xlog_internal.h"
#include "catalog/pg_control.h"
#include "catalog/pg_type.h"
#include "common/controldata_utils.h"
#include "utils/builtins.h"
#include "utils/pg_lsn.h"
#include "utils/timestamp.h"
Datum
pg_control_system(PG_FUNCTION_ARGS)
{
Datum values[4];
bool nulls[4];
TupleDesc tupdesc;
HeapTuple htup;
ControlFileData *ControlFile;
bool crc_ok;
/*
* Construct a tuple descriptor for the result row. This must match this
* function's pg_proc entry!
*/
tupdesc = CreateTemplateTupleDesc(4, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "pg_control_version",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "catalog_version_no",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "system_identifier",
INT8OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "pg_control_last_modified",
TIMESTAMPTZOID, -1, 0);
tupdesc = BlessTupleDesc(tupdesc);
/* read the control file */
ControlFile = get_controlfile(DataDir, NULL, &crc_ok);
if (!crc_ok)
ereport(ERROR,
(errmsg("calculated CRC checksum does not match value stored in file")));
values[0] = Int32GetDatum(ControlFile->pg_control_version);
nulls[0] = false;
values[1] = Int32GetDatum(ControlFile->catalog_version_no);
nulls[1] = false;
values[2] = Int64GetDatum(ControlFile->system_identifier);
nulls[2] = false;
values[3] = TimestampTzGetDatum(time_t_to_timestamptz(ControlFile->time));
nulls[3] = false;
htup = heap_form_tuple(tupdesc, values, nulls);
PG_RETURN_DATUM(HeapTupleGetDatum(htup));
}
Datum
pg_control_checkpoint(PG_FUNCTION_ARGS)
{
Datum values[19];
bool nulls[19];
TupleDesc tupdesc;
HeapTuple htup;
ControlFileData *ControlFile;
XLogSegNo segno;
char xlogfilename[MAXFNAMELEN];
bool crc_ok;
/*
* Construct a tuple descriptor for the result row. This must match this
* function's pg_proc entry!
*/
tupdesc = CreateTemplateTupleDesc(19, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "checkpoint_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "prior_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "redo_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "redo_wal_file",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 5, "timeline_id",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 6, "prev_timeline_id",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 7, "full_page_writes",
BOOLOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 8, "next_xid",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 9, "next_oid",
OIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 10, "next_multixact_id",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 11, "next_multi_offset",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 12, "oldest_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 13, "oldest_xid_dbid",
OIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 14, "oldest_active_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 15, "oldest_multi_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 16, "oldest_multi_dbid",
OIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 17, "oldest_commit_ts_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 18, "newest_commit_ts_xid",
XIDOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 19, "checkpoint_time",
TIMESTAMPTZOID, -1, 0);
tupdesc = BlessTupleDesc(tupdesc);
/* Read the control file. */
ControlFile = get_controlfile(DataDir, NULL, &crc_ok);
if (!crc_ok)
ereport(ERROR,
(errmsg("calculated CRC checksum does not match value stored in file")));
/*
* Calculate name of the WAL file containing the latest checkpoint's REDO
* start point.
*/
XLByteToSeg(ControlFile->checkPointCopy.redo, segno);
XLogFileName(xlogfilename, ControlFile->checkPointCopy.ThisTimeLineID, segno);
/* Populate the values and null arrays */
values[0] = LSNGetDatum(ControlFile->checkPoint);
nulls[0] = false;
values[1] = LSNGetDatum(ControlFile->prevCheckPoint);
nulls[1] = false;
values[2] = LSNGetDatum(ControlFile->checkPointCopy.redo);
nulls[2] = false;
values[3] = CStringGetTextDatum(xlogfilename);
nulls[3] = false;
values[4] = Int32GetDatum(ControlFile->checkPointCopy.ThisTimeLineID);
nulls[4] = false;
values[5] = Int32GetDatum(ControlFile->checkPointCopy.PrevTimeLineID);
nulls[5] = false;
values[6] = BoolGetDatum(ControlFile->checkPointCopy.fullPageWrites);
nulls[6] = false;
values[7] = CStringGetTextDatum(psprintf("%u:%u",
ControlFile->checkPointCopy.nextXidEpoch,
ControlFile->checkPointCopy.nextXid));
nulls[7] = false;
values[8] = ObjectIdGetDatum(ControlFile->checkPointCopy.nextOid);
nulls[8] = false;
values[9] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMulti);
nulls[9] = false;
values[10] = TransactionIdGetDatum(ControlFile->checkPointCopy.nextMultiOffset);
nulls[10] = false;
values[11] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestXid);
nulls[11] = false;
values[12] = ObjectIdGetDatum(ControlFile->checkPointCopy.oldestXidDB);
nulls[12] = false;
values[13] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestActiveXid);
nulls[13] = false;
values[14] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestMulti);
nulls[14] = false;
values[15] = ObjectIdGetDatum(ControlFile->checkPointCopy.oldestMultiDB);
nulls[15] = false;
values[16] = TransactionIdGetDatum(ControlFile->checkPointCopy.oldestCommitTsXid);
nulls[16] = false;
values[17] = TransactionIdGetDatum(ControlFile->checkPointCopy.newestCommitTsXid);
nulls[17] = false;
values[18] = TimestampTzGetDatum(
time_t_to_timestamptz(ControlFile->checkPointCopy.time));
nulls[18] = false;
htup = heap_form_tuple(tupdesc, values, nulls);
PG_RETURN_DATUM(HeapTupleGetDatum(htup));
}
Datum
pg_control_recovery(PG_FUNCTION_ARGS)
{
Datum values[5];
bool nulls[5];
TupleDesc tupdesc;
HeapTuple htup;
ControlFileData *ControlFile;
bool crc_ok;
/*
* Construct a tuple descriptor for the result row. This must match this
* function's pg_proc entry!
*/
tupdesc = CreateTemplateTupleDesc(5, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "min_recovery_end_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "min_recovery_end_timeline",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "backup_start_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "backup_end_lsn",
LSNOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 5, "end_of_backup_record_required",
BOOLOID, -1, 0);
tupdesc = BlessTupleDesc(tupdesc);
/* read the control file */
ControlFile = get_controlfile(DataDir, NULL, &crc_ok);
if (!crc_ok)
ereport(ERROR,
(errmsg("calculated CRC checksum does not match value stored in file")));
values[0] = LSNGetDatum(ControlFile->minRecoveryPoint);
nulls[0] = false;
values[1] = Int32GetDatum(ControlFile->minRecoveryPointTLI);
nulls[1] = false;
values[2] = LSNGetDatum(ControlFile->backupStartPoint);
nulls[2] = false;
values[3] = LSNGetDatum(ControlFile->backupEndPoint);
nulls[3] = false;
values[4] = BoolGetDatum(ControlFile->backupEndRequired);
nulls[4] = false;
htup = heap_form_tuple(tupdesc, values, nulls);
PG_RETURN_DATUM(HeapTupleGetDatum(htup));
}
Datum
pg_control_init(PG_FUNCTION_ARGS)
{
Datum values[12];
bool nulls[12];
TupleDesc tupdesc;
HeapTuple htup;
ControlFileData *ControlFile;
bool crc_ok;
/*
* Construct a tuple descriptor for the result row. This must match this
* function's pg_proc entry!
*/
tupdesc = CreateTemplateTupleDesc(12, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "max_data_alignment",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "database_block_size",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "blocks_per_segment",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "wal_block_size",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 5, "bytes_per_wal_segment",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 6, "max_identifier_length",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 7, "max_index_columns",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 8, "max_toast_chunk_size",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 9, "large_object_chunk_size",
INT4OID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 10, "float4_pass_by_value",
BOOLOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 11, "float8_pass_by_value",
BOOLOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 12, "data_page_checksum_version",
INT4OID, -1, 0);
tupdesc = BlessTupleDesc(tupdesc);
/* read the control file */
ControlFile = get_controlfile(DataDir, NULL, &crc_ok);
if (!crc_ok)
ereport(ERROR,
(errmsg("calculated CRC checksum does not match value stored in file")));
values[0] = Int32GetDatum(ControlFile->maxAlign);
nulls[0] = false;
values[1] = Int32GetDatum(ControlFile->blcksz);
nulls[1] = false;
values[2] = Int32GetDatum(ControlFile->relseg_size);
nulls[2] = false;
values[3] = Int32GetDatum(ControlFile->xlog_blcksz);
nulls[3] = false;
values[4] = Int32GetDatum(ControlFile->xlog_seg_size);
nulls[4] = false;
values[5] = Int32GetDatum(ControlFile->nameDataLen);
nulls[5] = false;
values[6] = Int32GetDatum(ControlFile->indexMaxKeys);
nulls[6] = false;
values[7] = Int32GetDatum(ControlFile->toast_max_chunk_size);
nulls[7] = false;
values[8] = Int32GetDatum(ControlFile->loblksize);
nulls[8] = false;
values[9] = BoolGetDatum(ControlFile->float4ByVal);
nulls[9] = false;
values[10] = BoolGetDatum(ControlFile->float8ByVal);
nulls[10] = false;
values[11] = Int32GetDatum(ControlFile->data_checksum_version);
nulls[11] = false;
htup = heap_form_tuple(tupdesc, values, nulls);
PG_RETURN_DATUM(HeapTupleGetDatum(htup));
}
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