Restructure backend SIGINT/SIGTERM handling so that 'die' interrupts

are treated more like 'cancel' interrupts: the signal handler sets a
flag that is examined at well-defined spots, rather than trying to cope
with an interrupt that might happen anywhere.  See pghackers discussion
of 1/12/01.

1 files changed, 7 insertions, 4 deletions

diff --git a/src/backend/utils/init/globals.c b/src/backend/utils/init/globals.c
index 4359ef60a8..8e9d4c95db 100644
--- a/src/backend/utils/init/globals.c
+++ b/src/backend/utils/init/globals.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/init/globals.c,v 1.49 2001/01/07 04:17:29 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/init/globals.c,v 1.50 2001/01/14 05:08:16 tgl Exp $
  *
  * NOTES
  *	  Globals used all over the place should be declared here and not
@@ -34,7 +34,12 @@ ProtocolVersion FrontendProtocol = PG_PROTOCOL_LATEST;
 
 bool		Noversion = false;
 bool		Quiet = false;
-volatile bool QueryCancel = false;
+
+volatile bool InterruptPending = false;
+volatile bool QueryCancelPending = false;
+volatile bool ProcDiePending = false;
+volatile bool ImmediateInterruptOK = false;
+volatile uint32 CritSectionCount = 0;
 
 int			MyProcPid;
 struct Port *MyProcPort;
@@ -56,9 +61,7 @@ BackendId	MyBackendId;
 char	   *DatabaseName = NULL;
 char	   *DatabasePath = NULL;
 
-bool		MyDatabaseIdIsInitialized = false;
 Oid			MyDatabaseId = InvalidOid;
-bool		TransactionInitWasProcessed = false;
 
 bool		IsUnderPostmaster = false;