Do not start a second copy of awgtpman.

git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@2670 6dcd42c9-f523-4c6d-aada-af552506706e

src/gds/awgtpman.c

@@ -240,6 +240,18 @@ CDS_HARDWARE cdsPciModules;
       printf("IPC at 0x%x\n", rmBoardAddress(2));
       ioMemData = (IO_MEM_DATA *)(rmBoardAddress(2) + IO_MEM_DATA_OFFSET);
 
+      // Make sure there is no other copy running already
+      { 
+      	int g,g1;
+        rmRead (0, &g, 0, 4, 0);
+	sleep(1);
+        rmRead (0, &g1, 0, 4, 0);
+	if (g != g1) {
+		fprintf(stderr, "Another copy already running! Will not start a second copy.\n");
+		_exit(1);
+	}
+      }
+
       // Find the first ADC card
       // Master will map ADC cards first, then DAC and finally DIO
       if (ioMemData -> totalCards == 0) {