static PyObject *
spt_getproctitle(PyObject *self /* Not used */, PyObject *args)
{
if (!PyArg_ParseTuple(args, ""))
return NULL;
int tlen;
const char *title;
title = get_ps_display(&tlen);
return Py_BuildValue("s#", title, tlen);
}
/*
* Wait for synchronous replication, if requested by user.
*
* Initially backends start in state SYNC_REP_NOT_WAITING and then
* change that state to SYNC_REP_WAITING before adding ourselves
* to the wait queue. During SyncRepWakeQueue() a WALSender changes
* the state to SYNC_REP_WAIT_COMPLETE once replication is confirmed.
* This backend then resets its state to SYNC_REP_NOT_WAITING.
*/
void
SyncRepWaitForLSN(XLogRecPtr XactCommitLSN)
{
char *new_status = NULL;
const char *old_status;
/*
* Fast exit if user has not requested sync replication, or
* there are no sync replication standby names defined.
* Note that those standbys don't need to be connected.
*/
if (!SyncRepRequested() || !SyncStandbysDefined())
return;
Assert(SHMQueueIsDetached(&(MyProc->syncRepLinks)));
Assert(WalSndCtl != NULL);
/* Reset the latch before adding ourselves to the queue. */
ResetLatch(&MyProc->waitLatch);
/*
* Set our waitLSN so WALSender will know when to wake us, and add
* ourselves to the queue.
*/
LWLockAcquire(SyncRepLock, LW_EXCLUSIVE);
Assert(MyProc->syncRepState == SYNC_REP_NOT_WAITING);
if (!WalSndCtl->sync_standbys_defined)
{
/*
* We don't wait for sync rep if WalSndCtl->sync_standbys_defined is
* not set. See SyncRepUpdateSyncStandbysDefined.
*/
LWLockRelease(SyncRepLock);
return;
}
MyProc->waitLSN = XactCommitLSN;
MyProc->syncRepState = SYNC_REP_WAITING;
SyncRepQueueInsert();
Assert(SyncRepQueueIsOrderedByLSN());
LWLockRelease(SyncRepLock);
/* Alter ps display to show waiting for sync rep. */
if (update_process_title)
{
int len;
old_status = get_ps_display(&len);
new_status = (char *) palloc(len + 32 + 1);
memcpy(new_status, old_status, len);
sprintf(new_status + len, " waiting for %X/%X",
XactCommitLSN.xlogid, XactCommitLSN.xrecoff);
set_ps_display(new_status, false);
new_status[len] = '\0'; /* truncate off " waiting ..." */
}
/*
* Wait for specified LSN to be confirmed.
*
* Each proc has its own wait latch, so we perform a normal latch
* check/wait loop here.
*/
for (;;)
{
int syncRepState;
/*
* Wait on latch for up to 60 seconds. This allows us to
* check for postmaster death regularly while waiting.
* Note that timeout here does not necessarily release from loop.
*/
WaitLatch(&MyProc->waitLatch, 60000000L);
/* Must reset the latch before testing state. */
ResetLatch(&MyProc->waitLatch);
/*
* Try checking the state without the lock first. There's no guarantee
* that we'll read the most up-to-date value, so if it looks like we're
* still waiting, recheck while holding the lock. But if it looks like
* we're done, we must really be done, because once walsender changes
* the state to SYNC_REP_WAIT_COMPLETE, it will never update it again,
* so we can't be seeing a stale value in that case.
*/
syncRepState = MyProc->syncRepState;
if (syncRepState == SYNC_REP_WAITING)
{
LWLockAcquire(SyncRepLock, LW_SHARED);
syncRepState = MyProc->syncRepState;
LWLockRelease(SyncRepLock);
}
if (syncRepState == SYNC_REP_WAIT_COMPLETE)
break;
/*
* If a wait for synchronous replication is pending, we can neither
* acknowledge the commit nor raise ERROR or FATAL. The latter
* would lead the client to believe that that the transaction
* aborted, which is not true: it's already committed locally.
* The former is no good either: the client has requested
* synchronous replication, and is entitled to assume that an
* acknowledged commit is also replicated, which may not be true.
* So in this case we issue a WARNING (which some clients may
* be able to interpret) and shut off further output. We do NOT
* reset ProcDiePending, so that the process will die after the
* commit is cleaned up.
*/
if (ProcDiePending)
{
ereport(WARNING,
(errcode(ERRCODE_ADMIN_SHUTDOWN),
errmsg("canceling the wait for synchronous replication and terminating connection due to administrator command"),
errdetail("The transaction has already committed locally, but may not have been replicated to the standby.")));
whereToSendOutput = DestNone;
SyncRepCancelWait();
break;
}
/*
* It's unclear what to do if a query cancel interrupt arrives. We
* can't actually abort at this point, but ignoring the interrupt
* altogether is not helpful, so we just terminate the wait with
* a suitable warning.
*/
if (QueryCancelPending)
{
QueryCancelPending = false;
ereport(WARNING,
(errmsg("canceling wait for synchronous replication due to user request"),
errdetail("The transaction has already committed locally, but may not have been replicated to the standby.")));
SyncRepCancelWait();
break;
}
/*
* If the postmaster dies, we'll probably never get an acknowledgement,
* because all the wal sender processes will exit. So just bail out.
*/
if (!PostmasterIsAlive(true))
{
ProcDiePending = true;
whereToSendOutput = DestNone;
SyncRepCancelWait();
break;
}
}
/*
* WalSender has checked our LSN and has removed us from queue. Clean up
* state and leave. It's OK to reset these shared memory fields without
* holding SyncRepLock, because any walsenders will ignore us anyway when
* we're not on the queue.
*/
Assert(SHMQueueIsDetached(&(MyProc->syncRepLinks)));
MyProc->syncRepState = SYNC_REP_NOT_WAITING;
MyProc->waitLSN.xlogid = 0;
MyProc->waitLSN.xrecoff = 0;
if (new_status)
{
/* Reset ps display */
set_ps_display(new_status, false);
pfree(new_status);
}
}
/*
* This is the main executioner for any query backend that conflicts with
* recovery processing. Judgement has already been passed on it within
* a specific rmgr. Here we just issue the orders to the procs. The procs
* then throw the required error as instructed.
*/
static void
ResolveRecoveryConflictWithVirtualXIDs(VirtualTransactionId *waitlist,
ProcSignalReason reason)
{
TimestampTz waitStart;
char *new_status;
/* Fast exit, to avoid a kernel call if there's no work to be done. */
if (!VirtualTransactionIdIsValid(*waitlist))
return;
waitStart = GetCurrentTimestamp();
new_status = NULL; /* we haven't changed the ps display */
while (VirtualTransactionIdIsValid(*waitlist))
{
/* reset standbyWait_us for each xact we wait for */
standbyWait_us = STANDBY_INITIAL_WAIT_US;
/* wait until the virtual xid is gone */
while (!ConditionalVirtualXactLockTableWait(*waitlist))
{
/*
* Report via ps if we have been waiting for more than 500 msec
* (should that be configurable?)
*/
if (update_process_title && new_status == NULL &&
TimestampDifferenceExceeds(waitStart, GetCurrentTimestamp(),
500))
{
const char *old_status;
int len;
old_status = get_ps_display(&len);
new_status = (char *) palloc(len + 8 + 1);
memcpy(new_status, old_status, len);
strcpy(new_status + len, " waiting");
set_ps_display(new_status, false);
new_status[len] = '\0'; /* truncate off " waiting" */
}
/* Is it time to kill it? */
if (WaitExceedsMaxStandbyDelay())
{
pid_t pid;
/*
* Now find out who to throw out of the balloon.
*/
Assert(VirtualTransactionIdIsValid(*waitlist));
pid = CancelVirtualTransaction(*waitlist, reason);
/*
* Wait a little bit for it to die so that we avoid flooding
* an unresponsive backend when system is heavily loaded.
*/
if (pid != 0)
pg_usleep(5000L);
}
}
/* The virtual transaction is gone now, wait for the next one */
waitlist++;
}
/* Reset ps display if we changed it */
if (new_status)
{
set_ps_display(new_status, false);
pfree(new_status);
}
}
/*
* redis_log_hook
* Hook for shipping log events to Redis
* (based on jsonlog.c)
*/
static void
redis_log_hook(ErrorData *edata)
{
StringInfoData buf;
TransactionId txid = GetTopTransactionIdIfAny();
bool print_stmt = false;
bool send_status = false;
/* static counter for line numbers */
static long log_line_number = 0;
/*
* This is one of the few places where we'd rather not inherit a static
* variable's value from the postmaster. But since we will, reset it when
* MyProcPid changes.
*/
if (lastPid != MyProcPid)
{
log_line_number = 0;
lastPid = MyProcPid;
formatted_start_time[0] = '\0';
redis_close_connection();
}
/*
* Check if the log has to be written, if not just exit.
*/
if (!is_log_level_output(edata->elevel, Redislog_min_messages))
{
goto quickExit;
}
log_line_number++;
initStringInfo(&buf);
/* Initialize string */
appendStringInfoChar(&buf, '{');
/* Timestamp */
setup_formatted_log_time();
append_json_literal(&buf, "@timestamp", formatted_log_time, true);
/* Username */
if (MyProcPort)
append_json_literal(&buf, "user_name", MyProcPort->user_name, true);
/* Database name */
if (MyProcPort)
append_json_literal(&buf, "database_name", MyProcPort->database_name, true);
/* Process ID */
if (MyProcPid != 0)
appendStringInfo(&buf, "\"process_id\":%d,", MyProcPid);
/* Remote host and port */
if (MyProcPort && MyProcPort->remote_host)
{
append_json_literal(&buf, "remote_host",
MyProcPort->remote_host, true);
if (MyProcPort->remote_port && MyProcPort->remote_port[0] != '\0')
append_json_literal(&buf, "remote_port",
MyProcPort->remote_port, true);
}
/* Session id */
if (MyProcPid != 0)
appendStringInfo(&buf, "\"session_id\":\"%lx.%x\",",
(long) MyStartTime, MyProcPid);
/* Process ID */
if (MyProcPid != 0)
appendStringInfo(&buf, "\"session_line_num\":%ld,", log_line_number);
/* PS display */
if (MyProcPort)
{
StringInfoData msgbuf;
const char *psdisp;
int displen;
initStringInfo(&msgbuf);
psdisp = get_ps_display(&displen);
appendBinaryStringInfo(&msgbuf, psdisp, displen);
append_json_literal(&buf, "command_tag", msgbuf.data, true);
pfree(msgbuf.data);
}
/* session start timestamp */
if (formatted_start_time[0] == '\0')
setup_formatted_start_time();
append_json_literal(&buf, "session_start_time", formatted_start_time, true);
/* Virtual transaction id */
/* keep VXID format in sync with lockfuncs.c */
if (MyProc != NULL && MyProc->backendId != InvalidBackendId)
appendStringInfo(&buf, "\"virtual_transaction_id\":\"%d/%u\",",
MyProc->backendId, MyProc->lxid);
/* Transaction id */
if (txid != InvalidTransactionId)
appendStringInfo(&buf, "\"transaction_id\":%u,", GetTopTransactionIdIfAny());
/* Error severity */
append_json_literal(&buf, "error_severity",
(char *) error_severity(edata->elevel), true);
/* SQL state code */
if (edata->sqlerrcode != ERRCODE_SUCCESSFUL_COMPLETION)
append_json_literal(&buf, "sql_state_code",
unpack_sql_state(edata->sqlerrcode), true);
/* Error detail or Error detail log */
if (edata->detail_log)
append_json_literal(&buf, "detail_log", edata->detail_log, true);
else if (edata->detail)
append_json_literal(&buf, "detail", edata->detail, true);
/* Error hint */
if (edata->hint)
append_json_literal(&buf, "hint", edata->hint, true);
/* Internal query */
if (edata->internalquery)
append_json_literal(&buf, "internal_query",
edata->internalquery, true);
/* if printed internal query, print internal pos too */
if (edata->internalpos > 0 && edata->internalquery != NULL)
appendStringInfo(&buf, "\"internal_query_pos\":%d,", edata->internalpos);
/* Error context */
if (edata->context)
append_json_literal(&buf, "context", edata->context, true);
/* user query --- only reported if not disabled by the caller */
if (is_log_level_output(edata->elevel, Redislog_min_error_statement) &&
debug_query_string != NULL &&
!edata->hide_stmt)
print_stmt = true;
if (print_stmt)
append_json_literal(&buf, "query", debug_query_string, true);
/* user query position -- only reposted if not disabled by the caller */
if (print_stmt && edata->cursorpos > 0)
appendStringInfo(&buf, "\"query_pos\":%d,", edata->cursorpos);
/* File error location */
if (Log_error_verbosity >= PGERROR_VERBOSE)
{
StringInfoData msgbuf;
initStringInfo(&msgbuf);
if (edata->funcname && edata->filename)
appendStringInfo(&msgbuf, "%s, %s:%d",
edata->funcname, edata->filename,
edata->lineno);
else if (edata->filename)
appendStringInfo(&msgbuf, "%s:%d",
edata->filename, edata->lineno);
append_json_literal(&buf, "file_location", msgbuf.data, true);
pfree(msgbuf.data);
}
/* Application name */
if (application_name && application_name[0] != '\0')
append_json_literal(&buf, "application_name",
application_name, true);
/* Error message */
append_json_literal(&buf, "message", edata->message, false);
/* Finish string */
appendStringInfoChar(&buf, '}');
appendStringInfoChar(&buf, '\n');
/* Send the data to Redis */
send_status = redis_log_shipper(buf.data, buf.len);
/* Skip sending the event to the server, if it was correctly
* shipped to Redis and if 'ship_to_redis_only' is set to true
*/
if (Redislog_ship_to_redis_only && send_status) {
edata->output_to_server = false;
}
/* Cleanup */
pfree(buf.data);
quickExit:
/* Continue chain to previous hook */
if (prev_log_hook)
(*prev_log_hook) (edata);
}
/*
* Wait for synchronous replication, if requested by user.
*
* Initially backends start in state SYNC_REP_NOT_WAITING and then
* change that state to SYNC_REP_WAITING before adding ourselves
* to the wait queue. During SyncRepWakeQueue() a WALSender changes
* the state to SYNC_REP_WAIT_COMPLETE once replication is confirmed.
* This backend then resets its state to SYNC_REP_NOT_WAITING.
*/
void
SyncRepWaitForLSN(XLogRecPtr XactCommitLSN)
{
char *new_status = NULL;
const char *old_status;
int mode = SyncRepWaitMode;
/*
* Fast exit if user has not requested sync replication, or there are no
* sync replication standby names defined. Note that those standbys don't
* need to be connected.
*/
if (!SyncRepRequested() || !SyncStandbysDefined())
return;
Assert(SHMQueueIsDetached(&(MyProc->syncRepLinks)));
Assert(WalSndCtl != NULL);
LWLockAcquire(SyncRepLock, LW_EXCLUSIVE);
Assert(MyProc->syncRepState == SYNC_REP_NOT_WAITING);
/*
* We don't wait for sync rep if WalSndCtl->sync_standbys_defined is not
* set. See SyncRepUpdateSyncStandbysDefined.
*
* Also check that the standby hasn't already replied. Unlikely race
* condition but we'll be fetching that cache line anyway so its likely to
* be a low cost check.
*/
if (!WalSndCtl->sync_standbys_defined ||
XLByteLE(XactCommitLSN, WalSndCtl->lsn[mode]))
{
LWLockRelease(SyncRepLock);
return;
}
/*
* Set our waitLSN so WALSender will know when to wake us, and add
* ourselves to the queue.
*/
MyProc->waitLSN = XactCommitLSN;
MyProc->syncRepState = SYNC_REP_WAITING;
SyncRepQueueInsert(mode);
Assert(SyncRepQueueIsOrderedByLSN(mode));
LWLockRelease(SyncRepLock);
/* Alter ps display to show waiting for sync rep. */
if (update_process_title)
{
int len;
old_status = get_ps_display(&len);
new_status = (char *) palloc(len + 32 + 1);
memcpy(new_status, old_status, len);
sprintf(new_status + len, " waiting for %X/%X",
XactCommitLSN.xlogid, XactCommitLSN.xrecoff);
set_ps_display(new_status, false);
new_status[len] = '\0'; /* truncate off " waiting ..." */
}
/*
* Wait for specified LSN to be confirmed.
*
* Each proc has its own wait latch, so we perform a normal latch
* check/wait loop here.
*/
for (;;)
{
int syncRepState;
/* Must reset the latch before testing state. */
ResetLatch(&MyProc->procLatch);
/*
* Try checking the state without the lock first. There's no
* guarantee that we'll read the most up-to-date value, so if it looks
* like we're still waiting, recheck while holding the lock. But if
* it looks like we're done, we must really be done, because once
* walsender changes the state to SYNC_REP_WAIT_COMPLETE, it will
* never update it again, so we can't be seeing a stale value in that
* case.
*
* Note: on machines with weak memory ordering, the acquisition of the
* lock is essential to avoid race conditions: we cannot be sure the
* sender's state update has reached main memory until we acquire the
* lock. We could get rid of this dance if SetLatch/ResetLatch
* contained memory barriers.
*/
syncRepState = MyProc->syncRepState;
if (syncRepState == SYNC_REP_WAITING)
{
LWLockAcquire(SyncRepLock, LW_SHARED);
syncRepState = MyProc->syncRepState;
LWLockRelease(SyncRepLock);
}
if (syncRepState == SYNC_REP_WAIT_COMPLETE)
break;
/*
* If a wait for synchronous replication is pending, we can neither
* acknowledge the commit nor raise ERROR or FATAL. The latter would
* lead the client to believe that that the transaction aborted, which
* is not true: it's already committed locally. The former is no good
* either: the client has requested synchronous replication, and is
* entitled to assume that an acknowledged commit is also replicated,
* which might not be true. So in this case we issue a WARNING (which
* some clients may be able to interpret) and shut off further output.
* We do NOT reset ProcDiePending, so that the process will die after
* the commit is cleaned up.
*/
if (ProcDiePending)
{
ereport(WARNING,
(errcode(ERRCODE_ADMIN_SHUTDOWN),
errmsg("canceling the wait for synchronous replication and terminating connection due to administrator command"),
errdetail("The transaction has already committed locally, but might not have been replicated to the standby.")));
whereToSendOutput = DestNone;
SyncRepCancelWait();
break;
}
/*
* It's unclear what to do if a query cancel interrupt arrives. We
* can't actually abort at this point, but ignoring the interrupt
* altogether is not helpful, so we just terminate the wait with a
* suitable warning.
*/
if (QueryCancelPending)
{
QueryCancelPending = false;
ereport(WARNING,
(errmsg("canceling wait for synchronous replication due to user request"),
errdetail("The transaction has already committed locally, but might not have been replicated to the standby.")));
SyncRepCancelWait();
break;
}
/*
* If the postmaster dies, we'll probably never get an
* acknowledgement, because all the wal sender processes will exit. So
* just bail out.
*/
if (!PostmasterIsAlive())
{
ProcDiePending = true;
whereToSendOutput = DestNone;
SyncRepCancelWait();
break;
}
/*
* Wait on latch. Any condition that should wake us up will set the
* latch, so no need for timeout.
*/
WaitLatch(&MyProc->procLatch, WL_LATCH_SET | WL_POSTMASTER_DEATH, -1);
}
/*
* WalSender has checked our LSN and has removed us from queue. Clean up
* state and leave. It's OK to reset these shared memory fields without
* holding SyncRepLock, because any walsenders will ignore us anyway when
* we're not on the queue.
*/
Assert(SHMQueueIsDetached(&(MyProc->syncRepLinks)));
MyProc->syncRepState = SYNC_REP_NOT_WAITING;
MyProc->waitLSN.xlogid = 0;
MyProc->waitLSN.xrecoff = 0;
if (new_status)
{
/* Reset ps display */
set_ps_display(new_status, false);
pfree(new_status);
}
}
static void
fmtLogMsg(StringInfo dst, ErrorData *edata)
{
{
char formattedLogTime[FORMATTED_TS_LEN];
/* timestamp with milliseconds */
formatNow(formattedLogTime, sizeof formattedLogTime);
/*
* Always present, non-nullable; don't need to write the N/P
* header.
*/
appendStringInfoString(dst, formattedLogTime);
appendStringInfoChar(dst, '\0');
}
/* username */
if (MyProcPort)
appendStringInfoPtr(dst, MyProcPort->user_name);
else
appendStringInfoPtr(dst, NULL);
/* database name */
if (MyProcPort)
appendStringInfoPtr(dst, MyProcPort->database_name);
else
appendStringInfoPtr(dst, NULL);
/* Process id */
{
uint32_t nPid = htobe32(savedPid);
appendBinaryStringInfo(dst, (void *) &nPid, sizeof nPid);
}
/* Remote host and port */
if (MyProcPort && MyProcPort->remote_host)
{
/* 'present' string header, since this string is nullable */
appendStringInfoChar(dst, 'P');
appendStringInfoString(dst, MyProcPort->remote_host);
if (MyProcPort->remote_port && MyProcPort->remote_port[0] != '\0')
{
appendStringInfoChar(dst, ':');
appendStringInfoString(dst, MyProcPort->remote_port);
}
appendStringInfoChar(dst, '\0');
}
else
appendStringInfoPtr(dst, NULL);
/* session id; non-nullable */
appendStringInfo(dst, "%lx.%x", (long) MyStartTime, MyProcPid);
appendStringInfoChar(dst, '\0');
/* Line number */
{
uint64_t nSeqNum = htobe64(seqNum);
appendBinaryStringInfo(dst, (void *) &nSeqNum, sizeof nSeqNum);
}
/* PS display */
if (MyProcPort)
{
StringInfoData msgbuf;
const char *psdisp;
int displen;
initStringInfo(&msgbuf);
psdisp = get_ps_display(&displen);
appendBinaryStringInfo(&msgbuf, psdisp, displen);
appendStringInfoChar(dst, 'P');
appendStringInfoString(dst, msgbuf.data);
appendStringInfoChar(dst, '\0');
pfree(msgbuf.data);
}
else
appendStringInfoPtr(dst, NULL);
/* session start timestamp */
if (cachedBackendStartTime[0] == '\0')
{
/* Rebuild the cache if it was blown */
reCacheBackendStartTime();
}
/* backend start time; non-nullable string */
appendStringInfoString(dst, cachedBackendStartTime);
appendStringInfoChar(dst, '\0');
/*
* Virtual transaction id
*
* keep VXID format in sync with lockfuncs.c
*/
if (MyProc != NULL && MyProc->backendId != InvalidBackendId)
{
appendStringInfoChar(dst, 'P');
appendStringInfo(dst, "%d/%u", MyProc->backendId, MyProc->lxid);
appendStringInfoChar(dst, '\0');
}
else
appendStringInfoPtr(dst, NULL);
/*
* Transaction id
*
* This seems to be a mistake both here and in elog.c; in particular, it's
* not clear how the epoch would get added here. However, leave room in
* the protocol to fix this later by upcasting.
*/
{
uint64_t nTxid = htobe64((uint64) GetTopTransactionIdIfAny());
appendBinaryStringInfo(dst, (void *) &nTxid, sizeof nTxid);
}
/* Error severity */
{
uint32_t nelevel = htobe32(edata->elevel);
appendBinaryStringInfo(dst, (void *) &nelevel, sizeof nelevel);
}
/* SQL state code */
appendStringInfoPtr(dst, unpack_sql_state(edata->sqlerrcode));
/* errmessage */
appendStringInfoPtr(dst, edata->message);
/* errdetail or errdetail_log */
if (edata->detail_log)
appendStringInfoPtr(dst, edata->detail_log);
else
appendStringInfoPtr(dst, edata->detail);
/* errhint */
appendStringInfoPtr(dst, edata->hint);
/* internal query */
appendStringInfoPtr(dst, edata->internalquery);
/* if printed internal query, print internal pos too */
if (edata->internalpos > 0 && edata->internalquery != NULL)
{
uint32_t ninternalpos = htobe32(edata->internalpos);
appendBinaryStringInfo(dst, (void *) &ninternalpos,
sizeof ninternalpos);
}
else
{
uint32_t ninternalpos = htobe32(-1);
appendBinaryStringInfo(dst, (void *) &ninternalpos,
sizeof ninternalpos);
}
/* errcontext */
appendStringInfoPtr(dst, edata->context);
/*
* user query --- only reported if not disabled by the caller.
*
* Also include query position.
*/
if (isLogLevelOutput(edata->elevel, log_min_error_statement) &&
debug_query_string != NULL && !edata->hide_stmt)
{
uint32_t nCursorPos = htobe32(edata->cursorpos);
appendStringInfoPtr(dst, debug_query_string);
appendBinaryStringInfo(dst, (void *) &nCursorPos, sizeof nCursorPos);
}
else
{
uint32_t nCursorPos = htobe32(-1);
appendStringInfoPtr(dst, NULL);
appendBinaryStringInfo(dst, (void *) &nCursorPos, sizeof nCursorPos);
}
/* file error location */
if (Log_error_verbosity >= PGERROR_VERBOSE)
{
StringInfoData msgbuf;
initStringInfo(&msgbuf);
if (edata->funcname && edata->filename)
appendStringInfo(&msgbuf, "%s, %s:%d",
edata->funcname, edata->filename,
edata->lineno);
else if (edata->filename)
appendStringInfo(&msgbuf, "%s:%d",
edata->filename, edata->lineno);
appendStringInfoChar(dst, 'P');
appendStringInfoString(dst, msgbuf.data);
appendStringInfoChar(dst, '\0');
pfree(msgbuf.data);
}
else
appendStringInfoPtr(dst, NULL);
/* application name */
appendStringInfoPtr(dst, application_name);
}
