===================================================================
RCS file: /home/cvs/OpenXM/src/kan96xx/Kan/stackmachine.c,v
retrieving revision 1.8
retrieving revision 1.11
diff -u -p -r1.8 -r1.11
--- OpenXM/src/kan96xx/Kan/stackmachine.c	2001/12/19 23:39:53	1.8
+++ OpenXM/src/kan96xx/Kan/stackmachine.c	2002/11/04 11:08:59	1.11
@@ -1,4 +1,4 @@
-/* $OpenXM: OpenXM/src/kan96xx/Kan/stackmachine.c,v 1.7 2001/05/04 01:06:25 takayama Exp $ */
+/* $OpenXM: OpenXM/src/kan96xx/Kan/stackmachine.c,v 1.10 2002/11/04 10:53:56 takayama Exp $ */
 /*   stackmachin.c */
 
 #include <stdio.h>
@@ -736,7 +736,11 @@ void scanner() {
   getokenSM(INIT);
   initSystemDictionary();
 
+#if defined(__CYGWIN__)
+  if (sigsetjmp(EnvOfStackMachine,1)) {
+#else
   if (setjmp(EnvOfStackMachine)) {
+#endif
     /* do nothing in the case of error */
     fprintf(stderr,"An error or interrupt in reading macros, files and command strings.\n");
     exit(10);
@@ -796,7 +800,11 @@ void scanner() {
   
   
   for (;;) {
+#if defined(__CYGWIN__)
+    if (jval=sigsetjmp(EnvOfStackMachine,1)) {
+#else
     if (jval=setjmp(EnvOfStackMachine)) {
+#endif
       /* ***  The following does not work properly.  ****
          if (jval == 2) {
          if (ErrorMessageMode == 1 || ErrorMessageMode == 2) {
@@ -808,6 +816,7 @@ void scanner() {
         fprintf(Fstack,"\nscanner> ");
       }
       KSexecuteString(" ctrlC-hook "); /* Execute User Defined functions. */
+      KSexecuteString(" (Computation is interrupted.) ");
       continue ;
     } else {  }
     if (DebugStack >= 1) { printOperandStack(); }
@@ -829,11 +838,15 @@ void ctrlC(sig)
   
   signal(sig,SIG_IGN);
   /* see 133p */
+  cancelAlarm();
+  if (sig == SIGALRM) {
+    fprintf(stderr,"ctrlC by SIGALRM\n");
+  }
 
   if (SGClock) {
     UserCtrlC = 1;
     fprintf(stderr,"ctrl-c is locked because of gc.\n");
-    signal(SIGINT,ctrlC);
+    signal(sig,ctrlC);  if (sig == SIGALRM) alarm((unsigned int)10);
     return;
   }
   if (OXlock) {
@@ -846,7 +859,7 @@ void ctrlC(sig)
       unlockCtrlCForOx();
     }
     fprintf(stderr,"ctrl-c is locked because of ox lock %d.\n",UserCtrlC);
-    signal(SIGINT,ctrlC);
+    signal(sig,ctrlC);  if (sig == SIGALRM) alarm((unsigned int)10);
     return;
   }
   if (ErrorMessageMode != 1) {
@@ -867,7 +880,11 @@ void ctrlC(sig)
   */
   getokenSM(INIT); /* It might fix the bug above. 1992/11/14 */
   signal(SIGINT,ctrlC);
+#if defined(__CYGWIN__)
+  siglongjmp(EnvOfStackMachine,2);
+#else
   longjmp(EnvOfStackMachine,2); /* returns 2 for ctrl-C */
+#endif
 }
 
 int executeToken(token)
@@ -992,6 +1009,7 @@ errorStackmachine(str)
   char message0[1024];
   char *message;
   extern int ErrorMessageMode;
+  cancelAlarm();
   if (ErrorMessageMode == 1 || ErrorMessageMode == 2) {
     pushErrorStack(KnewErrorPacket(SerialCurrent,-1,str));
   }
@@ -1083,7 +1101,11 @@ KSexecuteString(s)
 
   if (KSPushEnvMode) {
     *saved_EnvOfStackMachine = *EnvOfStackMachine;
+#if defined(__CYGWIN__)
+    if (jval = sigsetjmp(EnvOfStackMachine,1)) {
+#else
     if (jval = setjmp(EnvOfStackMachine)) {
+#endif
       *EnvOfStackMachine = *saved_EnvOfStackMachine;
       if (jval == 2) {
         if (ErrorMessageMode == 1 || ErrorMessageMode == 2) {
@@ -1092,11 +1114,17 @@ KSexecuteString(s)
       }
       recursive--;
       if (localCatchCtrlC) { signal(SIGINT, sigfunc); }
+      KSexecuteString(" ctrlC-hook "); /* Execute User Defined functions. */
+      KSexecuteString(" (Computation is interrupted.) ");
       return(-1);
     }else{ }
   }else{
     if (recursive == 0) {
+#if defined(__CYGWIN__)
+      if (jval=sigsetjmp(EnvOfStackMachine,1)) { 
+#else
       if (jval=setjmp(EnvOfStackMachine)) { 
+#endif
         if (jval == 2) {
           if (ErrorMessageMode == 1 || ErrorMessageMode == 2) {
             pushErrorStack(KnewErrorPacket(SerialCurrent,-1,"User interrupt by ctrl-C."));
@@ -1104,6 +1132,8 @@ KSexecuteString(s)
         }
         recursive = 0;
         if (localCatchCtrlC) { signal(SIGINT, sigfunc); }
+		KSexecuteString(" ctrlC-hook "); /* Execute User Defined functions. */
+		KSexecuteString(" (Computation is interrupted.) ");
         return(-1);
       }else { }
     }
@@ -1450,4 +1480,8 @@ struct object KSdupErrors() {
   }
   return(rob);
 }
-  
+
+void cancelAlarm() {
+  alarm((unsigned int) 0);
+  signal(SIGALRM,SIG_DFL);
+}