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authorBruce Momjian <bruce@momjian.us>2004-08-29 05:07:03 +0000
committerBruce Momjian <bruce@momjian.us>2004-08-29 05:07:03 +0000
commitb6b71b85bc45b49005b5aec87cba2c33fc8baf49 (patch)
treec23dbd1dbc43972a8e48327c8a771baf36952f3d /src/backend/storage/ipc
parent90cb9c305140684b2b00c739b724f67915e11404 (diff)
downloadpostgresql-b6b71b85bc45b49005b5aec87cba2c33fc8baf49.tar.gz
postgresql-b6b71b85bc45b49005b5aec87cba2c33fc8baf49.zip
Pgindent run for 8.0.
Diffstat (limited to 'src/backend/storage/ipc')
-rw-r--r--src/backend/storage/ipc/ipc.c6
-rw-r--r--src/backend/storage/ipc/ipci.c17
-rw-r--r--src/backend/storage/ipc/pmsignal.c19
-rw-r--r--src/backend/storage/ipc/shmem.c19
-rw-r--r--src/backend/storage/ipc/sinval.c141
-rw-r--r--src/backend/storage/ipc/sinvaladt.c10
6 files changed, 108 insertions, 104 deletions
diff --git a/src/backend/storage/ipc/ipc.c b/src/backend/storage/ipc/ipc.c
index 696ecad2e80..3ace9ea94e1 100644
--- a/src/backend/storage/ipc/ipc.c
+++ b/src/backend/storage/ipc/ipc.c
@@ -13,7 +13,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/ipc/ipc.c,v 1.88 2004/08/29 04:12:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/ipc/ipc.c,v 1.89 2004/08/29 05:06:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -146,7 +146,7 @@ shmem_exit(int code)
* ----------------------------------------------------------------
*/
void
-on_proc_exit(void (*function) (int code, Datum arg), Datum arg)
+ on_proc_exit(void (*function) (int code, Datum arg), Datum arg)
{
if (on_proc_exit_index >= MAX_ON_EXITS)
ereport(FATAL,
@@ -167,7 +167,7 @@ on_proc_exit(void (*function) (int code, Datum arg), Datum arg)
* ----------------------------------------------------------------
*/
void
-on_shmem_exit(void (*function) (int code, Datum arg), Datum arg)
+ on_shmem_exit(void (*function) (int code, Datum arg), Datum arg)
{
if (on_shmem_exit_index >= MAX_ON_EXITS)
ereport(FATAL,
diff --git a/src/backend/storage/ipc/ipci.c b/src/backend/storage/ipc/ipci.c
index 95c716b2b39..8787ab2df82 100644
--- a/src/backend/storage/ipc/ipci.c
+++ b/src/backend/storage/ipc/ipci.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/ipc/ipci.c,v 1.70 2004/08/29 04:12:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/ipc/ipci.c,v 1.71 2004/08/29 05:06:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -55,15 +55,16 @@ CreateSharedMemoryAndSemaphores(bool makePrivate,
int port)
{
PGShmemHeader *seghdr = NULL;
+
if (!IsUnderPostmaster)
{
- int size;
- int numSemas;
+ int size;
+ int numSemas;
/*
* Size of the Postgres shared-memory block is estimated via
- * moderately-accurate estimates for the big hogs, plus 100K for the
- * stuff that's too small to bother with estimating.
+ * moderately-accurate estimates for the big hogs, plus 100K for
+ * the stuff that's too small to bother with estimating.
*/
size = hash_estimate_size(SHMEM_INDEX_SIZE, sizeof(ShmemIndexEnt));
size += BufferShmemSize();
@@ -99,9 +100,8 @@ CreateSharedMemoryAndSemaphores(bool makePrivate,
else
{
/*
- * Attach to the shmem segment.
- * (this should only ever be reached by EXEC_BACKEND code,
- * and only then with makePrivate == false)
+ * Attach to the shmem segment. (this should only ever be reached
+ * by EXEC_BACKEND code, and only then with makePrivate == false)
*/
#ifdef EXEC_BACKEND
Assert(!makePrivate);
@@ -165,6 +165,7 @@ CreateSharedMemoryAndSemaphores(bool makePrivate,
BgWriterShmemInit();
#ifdef EXEC_BACKEND
+
/*
* Alloc the win32 shared backend array
*/
diff --git a/src/backend/storage/ipc/pmsignal.c b/src/backend/storage/ipc/pmsignal.c
index 2b1e11346b4..1e8cac5cc8b 100644
--- a/src/backend/storage/ipc/pmsignal.c
+++ b/src/backend/storage/ipc/pmsignal.c
@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/ipc/pmsignal.c,v 1.16 2004/08/29 04:12:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/ipc/pmsignal.c,v 1.17 2004/08/29 05:06:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -45,9 +45,10 @@ static volatile sig_atomic_t *PMSignalFlags;
void
PMSignalInit(void)
{
- bool found;
+ bool found;
+
PMSignalFlags = (sig_atomic_t *)
- ShmemInitStruct("PMSignalFlags",NUM_PMSIGNALS * sizeof(sig_atomic_t),&found);
+ ShmemInitStruct("PMSignalFlags", NUM_PMSIGNALS * sizeof(sig_atomic_t), &found);
if (!found)
MemSet(PMSignalFlags, 0, NUM_PMSIGNALS * sizeof(sig_atomic_t));
@@ -108,14 +109,14 @@ PostmasterIsAlive(bool amDirectChild)
else
{
/*
- * Use kill() to see if the postmaster is still alive. This can
- * sometimes give a false positive result, since the postmaster's PID
- * may get recycled, but it is good enough for existing uses by
- * indirect children.
+ * Use kill() to see if the postmaster is still alive. This can
+ * sometimes give a false positive result, since the postmaster's
+ * PID may get recycled, but it is good enough for existing uses
+ * by indirect children.
*/
return (kill(PostmasterPid, 0) == 0);
}
-#else /* WIN32 */
+#else /* WIN32 */
return (WaitForSingleObject(PostmasterHandle, 0) == WAIT_TIMEOUT);
-#endif /* WIN32 */
+#endif /* WIN32 */
}
diff --git a/src/backend/storage/ipc/shmem.c b/src/backend/storage/ipc/shmem.c
index 38422fe3136..d9cd8850395 100644
--- a/src/backend/storage/ipc/shmem.c
+++ b/src/backend/storage/ipc/shmem.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/ipc/shmem.c,v 1.79 2004/08/29 04:12:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/ipc/shmem.c,v 1.80 2004/08/29 05:06:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -74,11 +74,14 @@ SHMEM_OFFSET ShmemBase; /* start address of shared memory */
static SHMEM_OFFSET ShmemEnd; /* end+1 address of shared memory */
-NON_EXEC_STATIC slock_t *ShmemLock; /* spinlock for shared memory allocation */
+NON_EXEC_STATIC slock_t *ShmemLock; /* spinlock for shared memory
+ * allocation */
NON_EXEC_STATIC slock_t *ShmemIndexLock; /* spinlock for ShmemIndex */
-NON_EXEC_STATIC void *ShmemIndexAlloc = NULL; /* Memory actually allocated for ShmemIndex */
+NON_EXEC_STATIC void *ShmemIndexAlloc = NULL; /* Memory actually
+ * allocated for
+ * ShmemIndex */
static HTAB *ShmemIndex = NULL; /* primary index hashtable for shmem */
@@ -126,7 +129,7 @@ InitShmemAllocation(void *seghdr, bool init)
* Initialize ShmemVariableCache for transaction manager.
*/
ShmemVariableCache = (VariableCache)
- ShmemAlloc(sizeof(*ShmemVariableCache));
+ ShmemAlloc(sizeof(*ShmemVariableCache));
memset(ShmemVariableCache, 0, sizeof(*ShmemVariableCache));
}
}
@@ -348,11 +351,11 @@ ShmemInitStruct(const char *name, Size size, bool *foundPtr)
else
{
/*
- * If the shmem index doesn't exist, we are bootstrapping: we must
- * be trying to init the shmem index itself.
+ * If the shmem index doesn't exist, we are bootstrapping: we
+ * must be trying to init the shmem index itself.
*
- * Notice that the ShmemIndexLock is held until the shmem index has
- * been completely initialized.
+ * Notice that the ShmemIndexLock is held until the shmem index
+ * has been completely initialized.
*/
Assert(strcmp(name, "ShmemIndex") == 0);
Assert(ShmemBootstrap);
diff --git a/src/backend/storage/ipc/sinval.c b/src/backend/storage/ipc/sinval.c
index 82bfc160962..830d45169a6 100644
--- a/src/backend/storage/ipc/sinval.c
+++ b/src/backend/storage/ipc/sinval.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/ipc/sinval.c,v 1.71 2004/08/29 04:12:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/ipc/sinval.c,v 1.72 2004/08/29 05:06:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -43,20 +43,19 @@ static long xc_slow_answer = 0;
static void DisplayXidCache(int code, Datum arg);
-#else /* !XIDCACHE_DEBUG */
+#else /* !XIDCACHE_DEBUG */
#define xc_by_recent_xmin_inc() ((void) 0)
#define xc_by_main_xid_inc() ((void) 0)
#define xc_by_child_xid_inc() ((void) 0)
#define xc_slow_answer_inc() ((void) 0)
-
-#endif /* XIDCACHE_DEBUG */
+#endif /* XIDCACHE_DEBUG */
/*
* Because backends sitting idle will not be reading sinval events, we
* need a way to give an idle backend a swift kick in the rear and make
* it catch up before the sinval queue overflows and forces everyone
- * through a cache reset exercise. This is done by broadcasting SIGUSR1
+ * through a cache reset exercise. This is done by broadcasting SIGUSR1
* to all backends when the queue is threatening to become full.
*
* State for catchup events consists of two flags: one saying whether
@@ -107,7 +106,7 @@ InitBackendSharedInvalidationState(void)
#ifdef XIDCACHE_DEBUG
on_proc_exit(DisplayXidCache, (Datum) 0);
-#endif /* XIDCACHE_DEBUG */
+#endif /* XIDCACHE_DEBUG */
}
/*
@@ -148,8 +147,8 @@ ReceiveSharedInvalidMessages(
for (;;)
{
/*
- * We can discard any pending catchup event, since we will not exit
- * this loop until we're fully caught up.
+ * We can discard any pending catchup event, since we will not
+ * exit this loop until we're fully caught up.
*/
catchupInterruptOccurred = 0;
@@ -206,7 +205,7 @@ ReceiveSharedInvalidMessages(
*
* If we are idle (catchupInterruptEnabled is set), we can safely
* invoke ProcessCatchupEvent directly. Otherwise, just set a flag
- * to do it later. (Note that it's quite possible for normal processing
+ * to do it later. (Note that it's quite possible for normal processing
* of the current transaction to cause ReceiveSharedInvalidMessages()
* to be run later on; in that case the flag will get cleared again,
* since there's no longer any reason to do anything.)
@@ -283,7 +282,7 @@ CatchupInterruptHandler(SIGNAL_ARGS)
* EnableCatchupInterrupt
*
* This is called by the PostgresMain main loop just before waiting
- * for a frontend command. We process any pending catchup events,
+ * for a frontend command. We process any pending catchup events,
* and enable the signal handler to process future events directly.
*
* NOTE: the signal handler starts out disabled, and stays so until
@@ -302,11 +301,11 @@ EnableCatchupInterrupt(void)
* then test the occurred flag. If we see an unserviced interrupt has
* occurred, we re-clear the enable flag before going off to do the
* service work. (That prevents re-entrant invocation of
- * ProcessCatchupEvent() if another interrupt occurs.) If an
- * interrupt comes in between the setting and clearing of
- * catchupInterruptEnabled, then it will have done the service work and
- * left catchupInterruptOccurred zero, so we have to check again after
- * clearing enable. The whole thing has to be in a loop in case
+ * ProcessCatchupEvent() if another interrupt occurs.) If an interrupt
+ * comes in between the setting and clearing of
+ * catchupInterruptEnabled, then it will have done the service work
+ * and left catchupInterruptOccurred zero, so we have to check again
+ * after clearing enable. The whole thing has to be in a loop in case
* another interrupt occurs while we're servicing the first. Once we
* get out of the loop, enable is set and we know there is no
* unserviced interrupt.
@@ -322,9 +321,7 @@ EnableCatchupInterrupt(void)
break;
catchupInterruptEnabled = 0;
if (catchupInterruptOccurred)
- {
ProcessCatchupEvent();
- }
}
}
@@ -332,7 +329,7 @@ EnableCatchupInterrupt(void)
* DisableCatchupInterrupt
*
* This is called by the PostgresMain main loop just after receiving
- * a frontend command. Signal handler execution of catchup events
+ * a frontend command. Signal handler execution of catchup events
* is disabled until the next EnableCatchupInterrupt call.
*
* The SIGUSR2 signal handler also needs to call this, so as to
@@ -342,7 +339,7 @@ EnableCatchupInterrupt(void)
bool
DisableCatchupInterrupt(void)
{
- bool result = (catchupInterruptEnabled != 0);
+ bool result = (catchupInterruptEnabled != 0);
catchupInterruptEnabled = 0;
@@ -361,23 +358,23 @@ DisableCatchupInterrupt(void)
static void
ProcessCatchupEvent(void)
{
- bool notify_enabled;
+ bool notify_enabled;
/* Must prevent SIGUSR2 interrupt while I am running */
notify_enabled = DisableNotifyInterrupt();
/*
- * What we need to do here is cause ReceiveSharedInvalidMessages()
- * to run, which will do the necessary work and also reset the
- * catchupInterruptOccurred flag. If we are inside a transaction
- * we can just call AcceptInvalidationMessages() to do this. If we
+ * What we need to do here is cause ReceiveSharedInvalidMessages() to
+ * run, which will do the necessary work and also reset the
+ * catchupInterruptOccurred flag. If we are inside a transaction we
+ * can just call AcceptInvalidationMessages() to do this. If we
* aren't, we start and immediately end a transaction; the call to
* AcceptInvalidationMessages() happens down inside transaction start.
*
* It is awfully tempting to just call AcceptInvalidationMessages()
* without the rest of the xact start/stop overhead, and I think that
- * would actually work in the normal case; but I am not sure that things
- * would clean up nicely if we got an error partway through.
+ * would actually work in the normal case; but I am not sure that
+ * things would clean up nicely if we got an error partway through.
*/
if (IsTransactionOrTransactionBlock())
{
@@ -501,27 +498,27 @@ IsBackendPid(int pid)
* We can find this out cheaply too.
*
* 3. Search the SubTrans tree to find the Xid's topmost parent, and then
- * see if that is running according to PGPROC. This is the slowest, but
+ * see if that is running according to PGPROC. This is the slowest, but
* sadly it has to be done always if the other two failed, unless we see
* that the cached subxact sets are complete (none have overflowed).
*
* SInvalLock has to be held while we do 1 and 2. If we save the top Xids
- * while doing 1, we can release the SInvalLock while we do 3. This buys back
+ * while doing 1, we can release the SInvalLock while we do 3. This buys back
* some concurrency (we can't retrieve the main Xids from PGPROC again anyway;
* see GetNewTransactionId).
*/
bool
TransactionIdIsInProgress(TransactionId xid)
{
- bool result = false;
- SISeg *segP = shmInvalBuffer;
- ProcState *stateP = segP->procState;
- int i,
- j;
- int nxids = 0;
- TransactionId *xids;
- TransactionId topxid;
- bool locked;
+ bool result = false;
+ SISeg *segP = shmInvalBuffer;
+ ProcState *stateP = segP->procState;
+ int i,
+ j;
+ int nxids = 0;
+ TransactionId *xids;
+ TransactionId topxid;
+ bool locked;
/*
* Don't bother checking a very old transaction.
@@ -563,8 +560,8 @@ TransactionIdIsInProgress(TransactionId xid)
}
/*
- * We can ignore main Xids that are younger than the target Xid,
- * since the target could not possibly be their child.
+ * We can ignore main Xids that are younger than the target
+ * Xid, since the target could not possibly be their child.
*/
if (TransactionIdPrecedes(xid, pxid))
continue;
@@ -586,11 +583,11 @@ TransactionIdIsInProgress(TransactionId xid)
}
/*
- * Save the main Xid for step 3. We only need to remember main
- * Xids that have uncached children. (Note: there is no race
- * condition here because the overflowed flag cannot be cleared,
- * only set, while we hold SInvalLock. So we can't miss an Xid
- * that we need to worry about.)
+ * Save the main Xid for step 3. We only need to remember
+ * main Xids that have uncached children. (Note: there is no
+ * race condition here because the overflowed flag cannot be
+ * cleared, only set, while we hold SInvalLock. So we can't
+ * miss an Xid that we need to worry about.)
*/
if (proc->subxids.overflowed)
xids[nxids++] = pxid;
@@ -601,8 +598,8 @@ TransactionIdIsInProgress(TransactionId xid)
locked = false;
/*
- * If none of the relevant caches overflowed, we know the Xid is
- * not running without looking at pg_subtrans.
+ * If none of the relevant caches overflowed, we know the Xid is not
+ * running without looking at pg_subtrans.
*/
if (nxids == 0)
goto result_known;
@@ -610,10 +607,11 @@ TransactionIdIsInProgress(TransactionId xid)
/*
* Step 3: have to check pg_subtrans.
*
- * At this point, we know it's either a subtransaction of one of the
- * Xids in xids[], or it's not running. If it's an already-failed
- * subtransaction, we want to say "not running" even though its parent may
- * still be running. So first, check pg_clog to see if it's been aborted.
+ * At this point, we know it's either a subtransaction of one of the Xids
+ * in xids[], or it's not running. If it's an already-failed
+ * subtransaction, we want to say "not running" even though its parent
+ * may still be running. So first, check pg_clog to see if it's been
+ * aborted.
*/
xc_slow_answer_inc();
@@ -621,10 +619,10 @@ TransactionIdIsInProgress(TransactionId xid)
goto result_known;
/*
- * It isn't aborted, so check whether the transaction tree it
- * belongs to is still running (or, more precisely, whether it
- * was running when this routine started -- note that we already
- * released SInvalLock).
+ * It isn't aborted, so check whether the transaction tree it belongs
+ * to is still running (or, more precisely, whether it was running
+ * when this routine started -- note that we already released
+ * SInvalLock).
*/
topxid = SubTransGetTopmostTransaction(xid);
Assert(TransactionIdIsValid(topxid));
@@ -677,10 +675,10 @@ GetOldestXmin(bool allDbs)
int index;
/*
- * Normally we start the min() calculation with our own XID. But
- * if called by checkpointer, we will not be inside a transaction,
- * so use next XID as starting point for min() calculation. (Note
- * that if there are no xacts running at all, that will be the subtrans
+ * Normally we start the min() calculation with our own XID. But if
+ * called by checkpointer, we will not be inside a transaction, so use
+ * next XID as starting point for min() calculation. (Note that if
+ * there are no xacts running at all, that will be the subtrans
* truncation point!)
*/
if (IsTransactionState())
@@ -758,9 +756,9 @@ GetSnapshotData(Snapshot snapshot, bool serializable)
* lastBackend would be sufficient. But it seems better to do the
* malloc while not holding the lock, so we can't look at lastBackend.
*
- * This does open a possibility for avoiding repeated malloc/free:
- * since MaxBackends does not change at runtime, we can simply reuse
- * the previous xip array if any. (This relies on the fact that all
+ * This does open a possibility for avoiding repeated malloc/free: since
+ * MaxBackends does not change at runtime, we can simply reuse the
+ * previous xip array if any. (This relies on the fact that all
* callers pass static SnapshotData structs.)
*/
if (snapshot->xip == NULL)
@@ -961,7 +959,7 @@ GetUndoRecPtr(void)
return (urec);
}
-#endif /* NOT_USED */
+#endif /* NOT_USED */
/*
* BackendIdGetProc - given a BackendId, find its PGPROC structure
@@ -1024,19 +1022,20 @@ CountEmptyBackendSlots(void)
* XidCacheRemoveRunningXids
*
* Remove a bunch of TransactionIds from the list of known-running
- * subtransactions for my backend. Both the specified xid and those in
+ * subtransactions for my backend. Both the specified xid and those in
* the xids[] array (of length nxids) are removed from the subxids cache.
*/
void
XidCacheRemoveRunningXids(TransactionId xid, int nxids, TransactionId *xids)
{
- int i, j;
+ int i,
+ j;
Assert(!TransactionIdEquals(xid, InvalidTransactionId));
/*
* We must hold SInvalLock exclusively in order to remove transactions
- * from the PGPROC array. (See notes in GetSnapshotData.) It's
+ * from the PGPROC array. (See notes in GetSnapshotData.) It's
* possible this could be relaxed since we know this routine is only
* used to abort subtransactions, but pending closer analysis we'd
* best be conservative.
@@ -1044,13 +1043,13 @@ XidCacheRemoveRunningXids(TransactionId xid, int nxids, TransactionId *xids)
LWLockAcquire(SInvalLock, LW_EXCLUSIVE);
/*
- * Under normal circumstances xid and xids[] will be in increasing order,
- * as will be the entries in subxids. Scan backwards to avoid O(N^2)
- * behavior when removing a lot of xids.
+ * Under normal circumstances xid and xids[] will be in increasing
+ * order, as will be the entries in subxids. Scan backwards to avoid
+ * O(N^2) behavior when removing a lot of xids.
*/
for (i = nxids - 1; i >= 0; i--)
{
- TransactionId anxid = xids[i];
+ TransactionId anxid = xids[i];
for (j = MyProc->subxids.nxids - 1; j >= 0; j--)
{
@@ -1087,11 +1086,11 @@ static void
DisplayXidCache(int code, Datum arg)
{
fprintf(stderr,
- "XidCache: xmin: %ld, mainxid: %ld, childxid: %ld, slow: %ld\n",
+ "XidCache: xmin: %ld, mainxid: %ld, childxid: %ld, slow: %ld\n",
xc_by_recent_xmin,
xc_by_main_xid,
xc_by_child_xid,
xc_slow_answer);
}
-#endif /* XIDCACHE_DEBUG */
+#endif /* XIDCACHE_DEBUG */
diff --git a/src/backend/storage/ipc/sinvaladt.c b/src/backend/storage/ipc/sinvaladt.c
index 1d73b209c30..a84b25aecb9 100644
--- a/src/backend/storage/ipc/sinvaladt.c
+++ b/src/backend/storage/ipc/sinvaladt.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/storage/ipc/sinvaladt.c,v 1.56 2004/08/29 04:12:48 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/storage/ipc/sinvaladt.c,v 1.57 2004/08/29 05:06:48 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -50,11 +50,11 @@ SIBufferInit(int maxBackends)
int segSize;
SISeg *segP;
int i;
- bool found;
+ bool found;
/* Allocate space in shared memory */
segSize = SInvalShmemSize(maxBackends);
- shmInvalBuffer = segP = (SISeg *) ShmemInitStruct("shmInvalBuffer",segSize,&found);
+ shmInvalBuffer = segP = (SISeg *) ShmemInitStruct("shmInvalBuffer", segSize, &found);
if (found)
return;
@@ -215,8 +215,8 @@ SIInsertDataEntry(SISeg *segP, SharedInvalidationMessage *data)
/*
* Try to prevent table overflow. When the table is 70% full send a
* WAKEN_CHILDREN request to the postmaster. The postmaster will send
- * a SIGUSR1 signal to all the backends, which will cause sinval.c
- * to read any pending SI entries.
+ * a SIGUSR1 signal to all the backends, which will cause sinval.c to
+ * read any pending SI entries.
*
* This should never happen if all the backends are actively executing
* queries, but if a backend is sitting idle then it won't be starting