Add asserts to debug no transaction in progress

Author: knizhnik

arbiter.c

@@ -10,6 +10,8 @@
 
 #include "bgwpool.h"
 
+bool MtmIsLogicalReceiver;
+
 typedef struct
 {
     BgwPoolConstructor constructor;
@@ -24,6 +26,8 @@ static void BgwPoolMainLoop(Datum arg)
     int size;
     void* work;
 
+	MtmIsLogicalReceiver = true;
+
     BackgroundWorkerUnblockSignals();
 	BackgroundWorkerInitializeConnection(pool->dbname, pool->dbuser);
 

bgwpool.c

@@ -16,6 +16,8 @@ typedef uint64 timestamp_t;
 extern timestamp_t MtmGetSystemTime(void);   /* non-adjusted current system time */
 extern timestamp_t MtmGetCurrentTime(void);  /* adjusted current system time */
 
+extern bool  MtmIsLogicalReceiver;
+
 typedef struct
 {
     BgwPoolExecutor executor;