[commit] r2559 - CogVM source as per VMMaker.oscog-eem.163. - Vm-dev

21 Jun 2012

Author: eliot
Date: 2012-06-21 14:26:01 -0700 (Thu, 21 Jun 2012)
New Revision: 2559
Modified:
   branches/Cog/nscogsrc/vm/cointerp.c
   branches/Cog/nscogsrc/vm/cointerp.h
   branches/Cog/nscogsrc/vm/gcc3x-cointerp.c
   branches/Cog/nscogsrc/vm/interp.h
   branches/Cog/nscogsrc/vm/vmCallback.h
   branches/Cog/platforms/Cross/vm/sqSCCSVersion.h
   branches/Cog/platforms/Mac OS/vm/sqMacMain.c
   branches/Cog/platforms/Mac OS/vm/sqMacUnixCommandLineInterface.c
   branches/Cog/platforms/unix/vm/sqUnixMain.c
   branches/Cog/platforms/win32/vm/sqWin32Intel.c
   branches/Cog/platforms/win32/vm/sqWin32Window.c
   branches/Cog/src/vm/cointerp.c
   branches/Cog/src/vm/cointerp.h
   branches/Cog/src/vm/cointerpmt.c
   branches/Cog/src/vm/cointerpmt.h
   branches/Cog/src/vm/gcc3x-cointerp.c
   branches/Cog/src/vm/gcc3x-cointerpmt.c
   branches/Cog/src/vm/interp.h
   branches/Cog/src/vm/vmCallback.h
Log:
CogVM source as per VMMaker.oscog-eem.163.
Make wakeHighestPriority filter-out zombie processes; fixes Newspeak/Glue crash.
Add -blockonerror flag to Unix & Mac VMs to allow attaching gdb on error/segv.
Make the sigsegv handler catch SIGILL and SIGBUS on Unix and Mac.
Move ioExit[WithErrorCode] from sqWin32Window.c to sqWin32Intel.c.
Modified: branches/Cog/nscogsrc/vm/cointerp.c
===================================================================

--- branches/Cog/nscogsrc/vm/cointerp.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/nscogsrc/vm/cointerp.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,9 +1,9 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
    from
-	CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
-static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc " __DATE__ ;
+static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737 " __DATE__ ;
 char *__interpBuildInfo = __buildInfo;
@@ -575,7 +575,7 @@
 static sqInt iframeSavedIP(char *theFP);
 void ifValidWriteBackStackPointersSaveTo(void *theCFP, void *theCSP, char **savedFPP, char **savedSPP);
 static sqInt imageSegmentVersion(void);
-sqInt implicitReceiverFormixinimplementing(sqInt receiver, sqInt mixin, sqInt selector);
+sqInt implicitReceiverFormixinimplementing(sqInt rcvr, sqInt mixin, sqInt selector);
 static sqInt incCompBody(void);
 static sqInt incCompMakeFwd(void);
 static sqInt incCompMove(sqInt bytesFreed);
@@ -1916,7 +1916,7 @@
    /* 575 */ (void (*)(void))0,
  0 };
 static void (*externalPrimitiveTable[MaxExternalPrimitiveTableSize + 1 /* 4097 */])(void);
-const char *interpreterVersion = "Newspeak Virtual Machine CoInterpreter_VMMaker.oscog-eem.161";
+const char *interpreterVersion = "Newspeak Virtual Machine CoInterpreter_VMMaker.oscog-eem.163";
 sqInt minBackwardJumpCountForCompile = MinBackwardJumpCountForCompile /* 10 */;
 volatile int sendTrace;
@@ -17973,7 +17973,7 @@
    implementing: selector <Symbol> ^<Object> */
sqInt
-implicitReceiverFormixinimplementing(sqInt receiver, sqInt mixin, sqInt selector)
+implicitReceiverFormixinimplementing(sqInt rcvr, sqInt mixin, sqInt selector)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
     sqInt aClass;
     sqInt ccIndex;
@@ -18013,9 +18013,9 @@
    /* messageSelector is an implicit parameter of lookupMethodInDictionary: */
GIV(messageSelector) = selector;
-	mixinApplication = findApplicationOfTargetMixinstartingAtBehavior(mixin, fetchClassOf(receiver));
+	mixinApplication = findApplicationOfTargetMixinstartingAtBehavior(mixin, fetchClassOf(rcvr));
    if (mixinApplication == GIV(nilObj)) {
-		return receiver;
+		return rcvr;
    }
    dictionary = longAt((mixinApplication + BaseHeaderSize) + (MethodDictionaryIndex << ShiftForWord));
    /* begin lookupMethodInDictionary: */
@@ -18155,7 +18155,7 @@
    		return implicitReceiverOrNil;
    	}
    }
-	return receiver;
+	return rcvr;
 }
@@ -22670,6 +22670,7 @@
    	numStack = (((usqInt) ((theFP + FoxMFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    else {
+		/* begin setIFrameHasContext: */
    	byteAtput((theFP + FoxIFrameFlags) + 2, 1);
    	numArgs = byteAt((theFP + FoxIFrameFlags) + 1);
    	byteSize = (((headerOf(methodFieldOrObj)) & LargeContextBit) != 0
@@ -22682,6 +22683,7 @@
    	numStack = (((usqInt) ((theFP + FoxIFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    theContext = eeInstantiateMethodContextByteSize(byteSize);
+	/* begin setFrameContext:to: */
    longAtput(theFP + FoxThisContext, theContext);
    /* begin storePointerUnchecked:ofObject:withValue: */
    /* begin withSmallIntegerTags: */
@@ -43305,19 +43307,22 @@
    object1 = GIV(instructionPointer);
    longAtput((sp2 = GIV(stackPointer) - BytesPerWord), object1);
    GIV(stackPointer) = sp2;
+
+	/* update state of active process */
+
    activeContext = voidVMStateForSnapshot();
+	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
+	/* begin storePointer:ofObject:withValue: */
+	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
+		possibleRootStoreIntovalue(activeProc, activeContext);
+	}
+	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    /* begin pushRemappableOop: */
    assert(addressCouldBeOop(activeContext));
    GIV(remapBuffer)[(GIV(remapBufferCount) += 1)] = activeContext;
    if (!(GIV(remapBufferCount) <= RemapBufferSize)) {
    	error("remapBuffer overflow");
    }
-	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
-	/* begin storePointer:ofObject:withValue: */
-	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
-		possibleRootStoreIntovalue(activeProc, activeContext);
-	}
-	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    incrementalGC();
    fullGC();
    /* begin snapshotCleanUp */
@@ -46124,12 +46129,26 @@
 static sqInt
 wakeHighestPriority(void)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
+    sqInt ctxt;
     sqInt header;
     sqInt p;
+    sqInt proc;
     sqInt processList;
     sqInt schedLists;
     sqInt sz;
+	/* begin externalWriteBackHeadFramePointers */
+	assert((GIV(framePointer) - GIV(stackPointer)) < LargeContextSize);
+	assert(GIV(stackPage) == (mostRecentlyUsedPage()));
+	/* begin setHeadFP:andSP:inPage: */
+	assert(GIV(stackPointer) < GIV(framePointer));
+	assert((GIV(stackPointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(stackPointer) > (((GIV(stackPage)->realStackLimit)) - LargeContextSize)));
+	assert((GIV(framePointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(framePointer) > (((GIV(stackPage)->realStackLimit)) - (((sqInt) LargeContextSize >> 1)))));
+	(GIV(stackPage)->headFP = GIV(framePointer));
+	(GIV(stackPage)->headSP = GIV(stackPointer));
+	assert(pageListIsWellFormed());
    schedLists = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ProcessListsIndex << ShiftForWord));
    p = (GIV(highestRunnableProcessPriority) == 0
    	? (/* begin fetchWordLengthOf: */
@@ -46140,19 +46159,24 @@
    				: header & SizeMask)),
    		((usqInt) (sz - BaseHeaderSize)) >> ShiftForWord)
    	: GIV(highestRunnableProcessPriority));
+	while (((p -= 1)) >= 0) {
+		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
+		while (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) {
-	/* index of last indexable field */
+			/* Only answer processes with a runnable suspendedContext.
+			  Discard those that aren't; the VM would crash otherwise. */
-	p -= 1;
-	while (1) {
-		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
-		if (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) break;
-		if (((p -= 1)) < 0) {
-			error("scheduler could not find a runnable process");
+			proc = removeFirstLinkOfList(processList);
+			ctxt = longAt((proc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord));
+			if (isLiveContext(ctxt)) {
+				GIV(highestRunnableProcessPriority) = p + 1;
+				return proc;
+			}
+			warning("evicted zombie process from run queue");
    	}
    }
-	GIV(highestRunnableProcessPriority) = p + 1;
-	return removeFirstLinkOfList(processList);
+	error("scheduler could not find a runnable process");
+	return null;
 }
static sqInt
Modified: branches/Cog/nscogsrc/vm/cointerp.h
===================================================================
--- branches/Cog/nscogsrc/vm/cointerp.h	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/nscogsrc/vm/cointerp.h	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.159 uuid: cbf7f95a-6fe2-4578-898e-47afb8524be4
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
@@ -83,7 +83,7 @@
 sqInt * getStackPointer(void);
 sqInt headerOf(sqInt methodPointer);
 void ifValidWriteBackStackPointersSaveTo(void *theCFP, void *theCSP, char **savedFPP, char **savedSPP);
-sqInt implicitReceiverFormixinimplementing(sqInt receiver, sqInt mixin, sqInt selector);
+sqInt implicitReceiverFormixinimplementing(sqInt rcvr, sqInt mixin, sqInt selector);
 sqInt instanceSizeOf(sqInt classObj);
 sqInt instantiateClassindexableSize(sqInt classPointer, sqInt size);
 usqInt instructionPointerAddress(void);
Modified: branches/Cog/nscogsrc/vm/gcc3x-cointerp.c
===================================================================
--- branches/Cog/nscogsrc/vm/gcc3x-cointerp.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/nscogsrc/vm/gcc3x-cointerp.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -2,11 +2,11 @@
/* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
    from
-	CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
-static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc " __DATE__ ;
+static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737 " __DATE__ ;
 char *__interpBuildInfo = __buildInfo;
@@ -578,7 +578,7 @@
 static sqInt iframeSavedIP(char *theFP);
 void ifValidWriteBackStackPointersSaveTo(void *theCFP, void *theCSP, char **savedFPP, char **savedSPP);
 static sqInt imageSegmentVersion(void);
-sqInt implicitReceiverFormixinimplementing(sqInt receiver, sqInt mixin, sqInt selector);
+sqInt implicitReceiverFormixinimplementing(sqInt rcvr, sqInt mixin, sqInt selector);
 static sqInt incCompBody(void);
 static sqInt incCompMakeFwd(void);
 static sqInt incCompMove(sqInt bytesFreed);
@@ -1919,7 +1919,7 @@
    /* 575 */ (void (*)(void))0,
  0 };
 static void (*externalPrimitiveTable[MaxExternalPrimitiveTableSize + 1 /* 4097 */])(void);
-const char *interpreterVersion = "Newspeak Virtual Machine CoInterpreter_VMMaker.oscog-eem.161";
+const char *interpreterVersion = "Newspeak Virtual Machine CoInterpreter_VMMaker.oscog-eem.163";
 sqInt minBackwardJumpCountForCompile = MinBackwardJumpCountForCompile /* 10 */;
 volatile int sendTrace;
@@ -17977,7 +17977,7 @@
    implementing: selector <Symbol> ^<Object> */
sqInt
-implicitReceiverFormixinimplementing(sqInt receiver, sqInt mixin, sqInt selector)
+implicitReceiverFormixinimplementing(sqInt rcvr, sqInt mixin, sqInt selector)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
     sqInt aClass;
     sqInt ccIndex;
@@ -18017,9 +18017,9 @@
    /* messageSelector is an implicit parameter of lookupMethodInDictionary: */
GIV(messageSelector) = selector;
-	mixinApplication = findApplicationOfTargetMixinstartingAtBehavior(mixin, fetchClassOf(receiver));
+	mixinApplication = findApplicationOfTargetMixinstartingAtBehavior(mixin, fetchClassOf(rcvr));
    if (mixinApplication == GIV(nilObj)) {
-		return receiver;
+		return rcvr;
    }
    dictionary = longAt((mixinApplication + BaseHeaderSize) + (MethodDictionaryIndex << ShiftForWord));
    /* begin lookupMethodInDictionary: */
@@ -18159,7 +18159,7 @@
    		return implicitReceiverOrNil;
    	}
    }
-	return receiver;
+	return rcvr;
 }
@@ -22674,6 +22674,7 @@
    	numStack = (((usqInt) ((theFP + FoxMFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    else {
+		/* begin setIFrameHasContext: */
    	byteAtput((theFP + FoxIFrameFlags) + 2, 1);
    	numArgs = byteAt((theFP + FoxIFrameFlags) + 1);
    	byteSize = (((headerOf(methodFieldOrObj)) & LargeContextBit) != 0
@@ -22686,6 +22687,7 @@
    	numStack = (((usqInt) ((theFP + FoxIFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    theContext = eeInstantiateMethodContextByteSize(byteSize);
+	/* begin setFrameContext:to: */
    longAtput(theFP + FoxThisContext, theContext);
    /* begin storePointerUnchecked:ofObject:withValue: */
    /* begin withSmallIntegerTags: */
@@ -43309,19 +43311,22 @@
    object1 = GIV(instructionPointer);
    longAtput((sp2 = GIV(stackPointer) - BytesPerWord), object1);
    GIV(stackPointer) = sp2;
+
+	/* update state of active process */
+
    activeContext = voidVMStateForSnapshot();
+	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
+	/* begin storePointer:ofObject:withValue: */
+	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
+		possibleRootStoreIntovalue(activeProc, activeContext);
+	}
+	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    /* begin pushRemappableOop: */
    assert(addressCouldBeOop(activeContext));
    GIV(remapBuffer)[(GIV(remapBufferCount) += 1)] = activeContext;
    if (!(GIV(remapBufferCount) <= RemapBufferSize)) {
    	error("remapBuffer overflow");
    }
-	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
-	/* begin storePointer:ofObject:withValue: */
-	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
-		possibleRootStoreIntovalue(activeProc, activeContext);
-	}
-	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    incrementalGC();
    fullGC();
    /* begin snapshotCleanUp */
@@ -46128,12 +46133,26 @@
 static sqInt
 wakeHighestPriority(void)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
+    sqInt ctxt;
     sqInt header;
     sqInt p;
+    sqInt proc;
     sqInt processList;
     sqInt schedLists;
     sqInt sz;
+	/* begin externalWriteBackHeadFramePointers */
+	assert((GIV(framePointer) - GIV(stackPointer)) < LargeContextSize);
+	assert(GIV(stackPage) == (mostRecentlyUsedPage()));
+	/* begin setHeadFP:andSP:inPage: */
+	assert(GIV(stackPointer) < GIV(framePointer));
+	assert((GIV(stackPointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(stackPointer) > (((GIV(stackPage)->realStackLimit)) - LargeContextSize)));
+	assert((GIV(framePointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(framePointer) > (((GIV(stackPage)->realStackLimit)) - (((sqInt) LargeContextSize >> 1)))));
+	(GIV(stackPage)->headFP = GIV(framePointer));
+	(GIV(stackPage)->headSP = GIV(stackPointer));
+	assert(pageListIsWellFormed());
    schedLists = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ProcessListsIndex << ShiftForWord));
    p = (GIV(highestRunnableProcessPriority) == 0
    	? (/* begin fetchWordLengthOf: */
@@ -46144,19 +46163,24 @@
    				: header & SizeMask)),
    		((usqInt) (sz - BaseHeaderSize)) >> ShiftForWord)
    	: GIV(highestRunnableProcessPriority));
+	while (((p -= 1)) >= 0) {
+		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
+		while (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) {
-	/* index of last indexable field */
+			/* Only answer processes with a runnable suspendedContext.
+			  Discard those that aren't; the VM would crash otherwise. */
-	p -= 1;
-	while (1) {
-		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
-		if (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) break;
-		if (((p -= 1)) < 0) {
-			error("scheduler could not find a runnable process");
+			proc = removeFirstLinkOfList(processList);
+			ctxt = longAt((proc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord));
+			if (isLiveContext(ctxt)) {
+				GIV(highestRunnableProcessPriority) = p + 1;
+				return proc;
+			}
+			warning("evicted zombie process from run queue");
    	}
    }
-	GIV(highestRunnableProcessPriority) = p + 1;
-	return removeFirstLinkOfList(processList);
+	error("scheduler could not find a runnable process");
+	return null;
 }
static sqInt
Modified: branches/Cog/nscogsrc/vm/interp.h
===================================================================
--- branches/Cog/nscogsrc/vm/interp.h	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/nscogsrc/vm/interp.h	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.159 uuid: cbf7f95a-6fe2-4578-898e-47afb8524be4
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
#define VM_PROXY_MAJOR 1
Modified: branches/Cog/nscogsrc/vm/vmCallback.h
===================================================================
--- branches/Cog/nscogsrc/vm/vmCallback.h	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/nscogsrc/vm/vmCallback.h	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.159 uuid: cbf7f95a-6fe2-4578-898e-47afb8524be4
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
#define VM_CALLBACK_INC 1
Property changes on: branches/Cog/platforms/Cross/vm/sqSCCSVersion.h
___________________________________________________________________
Modified: checkindate
   - Wed Jun 13 14:35:36 PDT 2012
   + Thu Jun 21 14:21:32 PDT 2012
Modified: branches/Cog/platforms/Mac OS/vm/sqMacMain.c
===================================================================
--- branches/Cog/platforms/Mac OS/vm/sqMacMain.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/platforms/Mac OS/vm/sqMacMain.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -241,6 +241,19 @@
    fflush(stdout);
 }
+int blockOnError = 0; /* to allow attaching gdb on fatal error */
+
+static void
+block()
+{ struct timespec while_away_the_hours;
+
+	printf("blocking e.g. to allow attaching debugger\n");
+	while (1) {
+		while_away_the_hours.tv_sec = 3600;
+		nanosleep(&while_away_the_hours, 0);
+	}
+}
+
 /* Print an error message, possibly a stack trace, and exit. */
 /* Disable Intel compiler inlining of error which is used for breakpoints */
 #pragma auto_inline off
@@ -248,6 +261,7 @@
 error(char *msg)
 {
    reportStackState(msg,0,0,0);
+	if (blockOnError) block();
    abort();
 }
 #pragma auto_inline on
@@ -286,19 +300,32 @@
    errno = saved_errno;
 }
+static int inFault = 0;
+
 static void
 sigsegv(int sig, siginfo_t *info, void *uap)
 {
    time_t now = time(NULL);
    char ctimebuf[32];
    char crashdump[IMAGE_NAME_SIZE+1];
+	char *fault = sig == SIGSEGV
+					? "Segmentation fault"
+					: (sig == SIGBUS
+						? "Bus error"
+						: (sig == SIGILL
+							? "Illegal instruction"
+							: "Unknown signal"));
-	getCrashDumpFilenameInto(crashdump);
-	ctime_r(&now,ctimebuf);
-	pushOutputFile(crashdump);
-	reportStackState("Segmentation fault", ctimebuf, 0, uap);
-	popOutputFile();
-	reportStackState("Segmentation fault", ctimebuf, 0, uap);
+	if (!inFault) {
+		inFault = 1;
+		getCrashDumpFilenameInto(crashdump);
+		ctime_r(&now,ctimebuf);
+		pushOutputFile(crashdump);
+		reportStackState(fault, ctimebuf, 0, uap);
+		popOutputFile();
+		reportStackState(fault, ctimebuf, 0, uap);
+	}
+	if (blockOnError) block();
    abort();
 }
@@ -369,6 +396,8 @@
    sigsegv_handler_action.sa_sigaction = sigsegv;
    sigsegv_handler_action.sa_flags = SA_NODEFER | SA_SIGINFO;
    sigemptyset(&sigsegv_handler_action.sa_mask);
+    (void)sigaction(SIGBUS, &sigsegv_handler_action, 0);
+    (void)sigaction(SIGILL, &sigsegv_handler_action, 0);
     (void)sigaction(SIGSEGV, &sigsegv_handler_action, 0);
sigusr1_handler_action.sa_sigaction = sigusr1;
Modified: branches/Cog/platforms/Mac OS/vm/sqMacUnixCommandLineInterface.c
===================================================================
--- branches/Cog/platforms/Mac OS/vm/sqMacUnixCommandLineInterface.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/platforms/Mac OS/vm/sqMacUnixCommandLineInterface.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -160,6 +160,10 @@
   else if (!strncmp(argv[0], "-psn_", 5)) { return 1; }
   else if (!strcmp(argv[0], "-headless")) { gSqueakHeadless = true; return 1; }
   else if (!strcmp(argv[0], "-headfull")) { gSqueakHeadless = false; return 1; }
+  else if (!strcmp(argv[0], "-blockonerror")) {
+	extern int blockOnError;
+	blockOnError = true;
+	return 1; }
 #if (STACKVM || NewspeakVM) && !COGVM
   else if (!strcmp(argv[0], "-sendtrace")) { extern sqInt sendTrace; sendTrace = 1; return 1; }
 #endif
@@ -275,17 +279,28 @@
   printf("  -eden <size>[mk]      set eden memory to bytes\n");
   printf("  -leakcheck num        check for leaks in the heap\n");
   printf("  -stackpages num       use n stack pages\n");
+  printf("  -sendtrace[=num]      enable send tracing (optionally to a specific value)\n");
+  printf("  -numextsems num       make the external semaphore table num in size\n");
+  printf("  -noheartbeat          disable the heartbeat for VM debugging. disables input\n");
+  printf("  -pollpip              output . on each poll for input\n");
 #endif
 #if COGVM
   printf("  -codesize <size>[mk]  set machine code memory to bytes\n");
-  printf("  -sendtrace[=num]      enable send tracing (optionally to a specific value)\n");
   printf("  -tracestores          enable store tracing (assert check stores)\n");
-  printf("  -cogmaxlits <n>       set max number of literals for methods compiled to machine code\n");
+  printf("  -cogmaxlits <n>       set max number of literals for methods to be compiled to machine code\n");
   printf("  -cogminjumps <n>      set min number of backward jumps for interpreted methods to be considered for compilation to machine code\n");
 #endif
-  printf("  -pathenc <enc>        set encoding for pathnames (default: macintosh)\n");
+#if STACKVM || NewspeakVM
+  printf("  -breaksel selector    call warning when sending or jitting selector\n");
+#endif
+  printf("  -pathenc <enc>        set encoding for pathnames (default: %s)\n",
+		getEncodingType(gCurrentVMEncoding));
+
   printf("  -headless             run in headless (no window) mode (default: false)\n");
+  printf("  -headfull             run in headful (window) mode (default: true)\n");
   printf("  -version              print version information, then exit\n");
+
+  printf("  -blockonerror         on error or segv block, not exit.  useful for attaching gdb\n");
 }
static void printUsageNotes(void)
Modified: branches/Cog/platforms/unix/vm/sqUnixMain.c
===================================================================
--- branches/Cog/platforms/unix/vm/sqUnixMain.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/platforms/unix/vm/sqUnixMain.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -852,6 +852,19 @@
    fflush(stdout);
 }
+int blockOnError = 0; /* to allow attaching gdb on fatal error */
+
+static void
+block()
+{ struct timespec while_away_the_hours;
+
+	printf("blocking e.g. to allow attaching debugger\n");
+	while (1) {
+		while_away_the_hours.tv_sec = 3600;
+		nanosleep(&while_away_the_hours, 0);
+	}
+}
+
 /* Print an error message, possibly a stack trace, and exit. */
 /* Disable Intel compiler inlining of error which is used for breakpoints */
 #pragma auto_inline off
@@ -859,6 +872,7 @@
 error(char *msg)
 {
    reportStackState(msg,0,0,0);
+	if (blockOnError) block();
    abort();
 }
 #pragma auto_inline on
@@ -896,19 +910,31 @@
    errno = saved_errno;
 }
+static int inFault = 0;
+
 static void
 sigsegv(int sig, siginfo_t *info, void *uap)
 {
    time_t now = time(NULL);
    char ctimebuf[32];
    char crashdump[IMAGE_NAME_SIZE+1];
+	char *fault = sig == SIGSEGV
+					? "Segmentation fault"
+					: (sig == SIGBUS
+						? "Bus error"
+						: (sig == SIGILL
+							? "Illegal instruction"
+							: "Unknown signal"));
-	getCrashDumpFilenameInto(crashdump);
-	ctime_r(&now,ctimebuf);
-	pushOutputFile(crashdump);
-	reportStackState("Segmentation fault", ctimebuf, 0, uap);
-	popOutputFile();
-	reportStackState("Segmentation fault", ctimebuf, 0, uap);
+	if (!inFault) {
+		getCrashDumpFilenameInto(crashdump);
+		ctime_r(&now,ctimebuf);
+		pushOutputFile(crashdump);
+		reportStackState(fault, ctimebuf, 0, uap);
+		popOutputFile();
+		reportStackState(fault, ctimebuf, 0, uap);
+	}
+	if (blockOnError) block();
    abort();
 }
@@ -1277,6 +1303,7 @@
   else if (!strcmp(argv[0], "-nomixer"))	{ noSoundMixer	= 1;	return 1; }
   else if (!strcmp(argv[0], "-notimer"))	{ useItimer	= 0;	return 1; }
   else if (!strcmp(argv[0], "-nohandlers"))	{ installHandlers= 0;	return 1; }
+  else if (!strcmp(argv[0], "-blockonerror")) { blockOnError = 1; return 1; }
 #if !STACKVM && !COGVM
   else if (!strncmp(argv[0],"-jit", 4))		{ useJit	= jitArgs(argv[0]+4);	return 1; }
   else if (!strcmp(argv[0], "-nojit"))		{ useJit	= 0;	return 1; }
@@ -1400,6 +1427,7 @@
 #endif
   printf("  -noevents             disable event-driven input support\n");
   printf("  -nohandlers           disable sigsegv & sigusr1 handlers\n");
+  printf("  -pollpip              output . on each poll for input\n");
   printf("  -pathenc <enc>        set encoding for pathnames (default: UTF-8)\n");
   printf("  -plugins <path>       specify alternative plugin location (see manpage)\n");
   printf("  -textenc <enc>        set encoding for external text (default: UTF-8)\n");
@@ -1412,6 +1440,7 @@
   printf("  -cogmaxlits <n>       set max number of literals for methods compiled to machine code\n");
   printf("  -cogminjumps <n>      set min number of backward jumps for interpreted methods to be considered for compilation to machine code\n");
 #endif
+  printf("  -blockonerror         on error or segv block, not exit.  useful for attaching gdb\n");
 #if 1
   printf("Deprecated:\n");
 # if !STACKVM
@@ -1781,6 +1810,8 @@
    sigsegv_handler_action.sa_flags = SA_NODEFER | SA_SIGINFO;
    sigemptyset(&sigsegv_handler_action.sa_mask);
     (void)sigaction(SIGSEGV, &sigsegv_handler_action, 0);
+    (void)sigaction(SIGBUS, &sigsegv_handler_action, 0);
+    (void)sigaction(SIGILL, &sigsegv_handler_action, 0);
sigusr1_handler_action.sa_sigaction = sigusr1;
    sigusr1_handler_action.sa_flags = SA_NODEFER | SA_SIGINFO;
Modified: branches/Cog/platforms/win32/vm/sqWin32Intel.c
===================================================================
--- branches/Cog/platforms/win32/vm/sqWin32Intel.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/platforms/win32/vm/sqWin32Intel.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -786,6 +786,11 @@
   return info;
 }
+/* Calling exit(ec) apparently does NOT provide the correct exit code for the
+ * terminating process (MinGW bug?). So instead call the shutdown sequence via
+ * _cexit() and then terminate explicitly.
+ */
+#define exit(ec) do { _cexit(ec); ExitProcess(ec); } while (0)
static void
 versionInfo(void)
@@ -1003,6 +1008,19 @@
   /* dumpStackIfInMainThread(0); */
   exit(-1);
 }
+
+static int inCleanExit = 0; /* to suppress stack trace in Cleanup */
+
+int ioExit(void) { return ioExitWithErrorCode(0); }
+
+sqInt
+ioExitWithErrorCode(int ec)
+{
+	inCleanExit = 1;
+	exit(ec);
+	return ec;
+}
+
 #pragma auto_inline on
static void
@@ -1126,9 +1144,7 @@
 void __cdecl Cleanup(void)
 { /* not all of these are essential, but they're polite... */
-extern int inCleanExit; /* from platforms/win32/vm/sqWin32Window.c */
-
-  if(!inCleanExit) {
+  if (!inCleanExit) {
     dumpStackIfInMainThread(0);
   }
   ioShutdownAllModules();
Modified: branches/Cog/platforms/win32/vm/sqWin32Window.c
===================================================================
--- branches/Cog/platforms/win32/vm/sqWin32Window.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/platforms/win32/vm/sqWin32Window.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1506,24 +1506,6 @@
 /****************************************************************************/
 /*              Misc support primitves                                      */
 /****************************************************************************/
-int inCleanExit = 0;
-
-int ioExit(void) { return ioExitWithErrorCode(0); }
-
-sqInt
-ioExitWithErrorCode(int ec)
-{
-  inCleanExit = 1;
-  /* Calling exit(ec) apparently does NOT provide the correct
-     exit code for the terminating process. So instead call
-     the shutdown sequence via _cexit() and then terminate
-     explicitly. */
-  _cexit(ec);
-  ExitProcess(ec);
-  /* avoid the warnings here */
-  return ec;
-}
-
 int ioBeep(void)
 {
   MessageBeep(0);
Modified: branches/Cog/src/vm/cointerp.c
===================================================================
--- branches/Cog/src/vm/cointerp.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/cointerp.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,9 +1,9 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
    from
-	CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
-static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc " __DATE__ ;
+static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737 " __DATE__ ;
 char *__interpBuildInfo = __buildInfo;
@@ -1906,7 +1906,7 @@
    /* 575 */ (void (*)(void))0,
  0 };
 static void (*externalPrimitiveTable[MaxExternalPrimitiveTableSize + 1 /* 4097 */])(void);
-const char *interpreterVersion = "Croquet Closure Cog VM [CoInterpreter VMMaker.oscog-eem.161]";
+const char *interpreterVersion = "Croquet Closure Cog VM [CoInterpreter VMMaker.oscog-eem.163]";
 sqInt minBackwardJumpCountForCompile = MinBackwardJumpCountForCompile /* 10 */;
 volatile int sendTrace;
@@ -21994,6 +21994,7 @@
    	numStack = (((usqInt) ((theFP + FoxMFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    else {
+		/* begin setIFrameHasContext: */
    	byteAtput((theFP + FoxIFrameFlags) + 2, 1);
    	numArgs = byteAt((theFP + FoxIFrameFlags) + 1);
    	byteSize = (((headerOf(methodFieldOrObj)) & LargeContextBit) != 0
@@ -22006,6 +22007,7 @@
    	numStack = (((usqInt) ((theFP + FoxIFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    theContext = eeInstantiateMethodContextByteSize(byteSize);
+	/* begin setFrameContext:to: */
    longAtput(theFP + FoxThisContext, theContext);
    /* begin storePointerUnchecked:ofObject:withValue: */
    /* begin withSmallIntegerTags: */
@@ -42616,19 +42618,22 @@
    object1 = GIV(instructionPointer);
    longAtput((sp2 = GIV(stackPointer) - BytesPerWord), object1);
    GIV(stackPointer) = sp2;
+
+	/* update state of active process */
+
    activeContext = voidVMStateForSnapshot();
+	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
+	/* begin storePointer:ofObject:withValue: */
+	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
+		possibleRootStoreIntovalue(activeProc, activeContext);
+	}
+	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    /* begin pushRemappableOop: */
    assert(addressCouldBeOop(activeContext));
    GIV(remapBuffer)[(GIV(remapBufferCount) += 1)] = activeContext;
    if (!(GIV(remapBufferCount) <= RemapBufferSize)) {
    	error("remapBuffer overflow");
    }
-	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
-	/* begin storePointer:ofObject:withValue: */
-	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
-		possibleRootStoreIntovalue(activeProc, activeContext);
-	}
-	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    incrementalGC();
    fullGC();
    /* begin snapshotCleanUp */
@@ -45435,12 +45440,26 @@
 static sqInt
 wakeHighestPriority(void)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
+    sqInt ctxt;
     sqInt header;
     sqInt p;
+    sqInt proc;
     sqInt processList;
     sqInt schedLists;
     sqInt sz;
+	/* begin externalWriteBackHeadFramePointers */
+	assert((GIV(framePointer) - GIV(stackPointer)) < LargeContextSize);
+	assert(GIV(stackPage) == (mostRecentlyUsedPage()));
+	/* begin setHeadFP:andSP:inPage: */
+	assert(GIV(stackPointer) < GIV(framePointer));
+	assert((GIV(stackPointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(stackPointer) > (((GIV(stackPage)->realStackLimit)) - LargeContextSize)));
+	assert((GIV(framePointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(framePointer) > (((GIV(stackPage)->realStackLimit)) - (((sqInt) LargeContextSize >> 1)))));
+	(GIV(stackPage)->headFP = GIV(framePointer));
+	(GIV(stackPage)->headSP = GIV(stackPointer));
+	assert(pageListIsWellFormed());
    schedLists = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ProcessListsIndex << ShiftForWord));
    p = (GIV(highestRunnableProcessPriority) == 0
    	? (/* begin fetchWordLengthOf: */
@@ -45451,19 +45470,24 @@
    				: header & SizeMask)),
    		((usqInt) (sz - BaseHeaderSize)) >> ShiftForWord)
    	: GIV(highestRunnableProcessPriority));
+	while (((p -= 1)) >= 0) {
+		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
+		while (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) {
-	/* index of last indexable field */
+			/* Only answer processes with a runnable suspendedContext.
+			  Discard those that aren't; the VM would crash otherwise. */
-	p -= 1;
-	while (1) {
-		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
-		if (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) break;
-		if (((p -= 1)) < 0) {
-			error("scheduler could not find a runnable process");
+			proc = removeFirstLinkOfList(processList);
+			ctxt = longAt((proc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord));
+			if (isLiveContext(ctxt)) {
+				GIV(highestRunnableProcessPriority) = p + 1;
+				return proc;
+			}
+			warning("evicted zombie process from run queue");
    	}
    }
-	GIV(highestRunnableProcessPriority) = p + 1;
-	return removeFirstLinkOfList(processList);
+	error("scheduler could not find a runnable process");
+	return null;
 }
static sqInt
Modified: branches/Cog/src/vm/cointerp.h
===================================================================
--- branches/Cog/src/vm/cointerp.h	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/cointerp.h	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.159 uuid: cbf7f95a-6fe2-4578-898e-47afb8524be4
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
@@ -83,7 +83,7 @@
 sqInt * getStackPointer(void);
 sqInt headerOf(sqInt methodPointer);
 void ifValidWriteBackStackPointersSaveTo(void *theCFP, void *theCSP, char **savedFPP, char **savedSPP);
-sqInt implicitReceiverFormixinimplementing(sqInt receiver, sqInt mixin, sqInt selector);
+sqInt implicitReceiverFormixinimplementing(sqInt rcvr, sqInt mixin, sqInt selector);
 sqInt instanceSizeOf(sqInt classObj);
 sqInt instantiateClassindexableSize(sqInt classPointer, sqInt size);
 usqInt instructionPointerAddress(void);
Modified: branches/Cog/src/vm/cointerpmt.c
===================================================================
--- branches/Cog/src/vm/cointerpmt.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/cointerpmt.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,9 +1,9 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
    from
-	CoInterpreterMT VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CoInterpreterMT VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
-static char __buildInfo[] = "CoInterpreterMT VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc " __DATE__ ;
+static char __buildInfo[] = "CoInterpreterMT VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737 " __DATE__ ;
 char *__interpBuildInfo = __buildInfo;
@@ -2005,7 +2005,7 @@
    /* 575 */ (void (*)(void))0,
  0 };
 static void (*externalPrimitiveTable[MaxExternalPrimitiveTableSize + 1 /* 4097 */])(void);
-const char *interpreterVersion = "Croquet Closure Cog MT VM [CoInterpreterMT VMMaker.oscog-eem.161]";
+const char *interpreterVersion = "Croquet Closure Cog MT VM [CoInterpreterMT VMMaker.oscog-eem.163]";
 sqInt minBackwardJumpCountForCompile = MinBackwardJumpCountForCompile /* 10 */;
 volatile int sendTrace;
 sqInt willNotThreadWarnCount;
@@ -22754,6 +22754,7 @@
    	numStack = (((usqInt) ((theFP + FoxMFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    else {
+		/* begin setIFrameHasContext: */
    	byteAtput((theFP + FoxIFrameFlags) + 2, 1);
    	numArgs = byteAt((theFP + FoxIFrameFlags) + 1);
    	byteSize = (((headerOf(methodFieldOrObj)) & LargeContextBit) != 0
@@ -22766,6 +22767,7 @@
    	numStack = (((usqInt) ((theFP + FoxIFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    theContext = eeInstantiateMethodContextByteSize(byteSize);
+	/* begin setFrameContext:to: */
    longAtput(theFP + FoxThisContext, theContext);
    /* begin storePointerUnchecked:ofObject:withValue: */
    /* begin withSmallIntegerTags: */
@@ -44043,19 +44045,22 @@
    object1 = GIV(instructionPointer);
    longAtput((sp2 = GIV(stackPointer) - BytesPerWord), object1);
    GIV(stackPointer) = sp2;
+
+	/* update state of active process */
+
    activeContext = voidVMStateForSnapshot();
+	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
+	/* begin storePointer:ofObject:withValue: */
+	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
+		possibleRootStoreIntovalue(activeProc, activeContext);
+	}
+	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    /* begin pushRemappableOop: */
    assert(addressCouldBeOop(activeContext));
    GIV(remapBuffer)[(GIV(remapBufferCount) += 1)] = activeContext;
    if (!(GIV(remapBufferCount) <= RemapBufferSize)) {
    	error("remapBuffer overflow");
    }
-	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
-	/* begin storePointer:ofObject:withValue: */
-	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
-		possibleRootStoreIntovalue(activeProc, activeContext);
-	}
-	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    incrementalGC();
    fullGC();
    /* begin snapshotCleanUp */
@@ -47187,8 +47192,6 @@
    runnable process the VM maintains a variable holding the
    highest priority runnable process. If this variable is 0 then the
    VM does not know the highest priority and must search all lists.
-	Note: It is a fatal VM error if there is no runnable process, but
-	the test can't be done here.
    
    Override to answer nil when there is no runnable process instead of
    aborting. In the threaded VM the abort test is done in transferTo:from:
@@ -47199,8 +47202,10 @@
 static sqInt
 wakeHighestPriority(void)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
+    sqInt ctxt;
     sqInt header;
     sqInt p;
+    sqInt proc;
     sqInt processList;
     sqInt schedLists;
     sqInt sz;
@@ -47215,19 +47220,23 @@
    				: header & SizeMask)),
    		((usqInt) (sz - BaseHeaderSize)) >> ShiftForWord)
    	: GIV(highestRunnableProcessPriority));
+	while (((p -= 1)) >= 0) {
+		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
+		while (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) {
-	/* index of last indexable field */
+			/* Only answer processes with a runnable suspendedContext.
+			  Discard those that aren't; the VM would crash otherwise. */
-	p -= 1;
-	while (1) {
-		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
-		if (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) break;
-		if (((p -= 1)) < 0) {
-			return null;
+			proc = removeFirstLinkOfList(processList);
+			ctxt = longAt((proc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord));
+			if (isLiveContext(ctxt)) {
+				GIV(highestRunnableProcessPriority) = p + 1;
+				return proc;
+			}
+			warning("evicted zombie process from run queue");
    	}
    }
-	GIV(highestRunnableProcessPriority) = p + 1;
-	return removeFirstLinkOfList(processList);
+	return null;
 }
Modified: branches/Cog/src/vm/cointerpmt.h
===================================================================
--- branches/Cog/src/vm/cointerpmt.h	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/cointerpmt.h	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.159 uuid: cbf7f95a-6fe2-4578-898e-47afb8524be4
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
@@ -85,7 +85,7 @@
 sqOSThread getVMOSThread(void);
 sqInt headerOf(sqInt methodPointer);
 void ifValidWriteBackStackPointersSaveTo(void *theCFP, void *theCSP, char **savedFPP, char **savedSPP);
-sqInt implicitReceiverFormixinimplementing(sqInt receiver, sqInt mixin, sqInt selector);
+sqInt implicitReceiverFormixinimplementing(sqInt rcvr, sqInt mixin, sqInt selector);
 sqInt instanceSizeOf(sqInt classObj);
 sqInt instantiateClassindexableSize(sqInt classPointer, sqInt size);
 usqInt instructionPointerAddress(void);
Modified: branches/Cog/src/vm/gcc3x-cointerp.c
===================================================================
--- branches/Cog/src/vm/gcc3x-cointerp.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/gcc3x-cointerp.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -2,11 +2,11 @@
/* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
    from
-	CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
-static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc " __DATE__ ;
+static char __buildInfo[] = "CoInterpreter VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737 " __DATE__ ;
 char *__interpBuildInfo = __buildInfo;
@@ -1909,7 +1909,7 @@
    /* 575 */ (void (*)(void))0,
  0 };
 static void (*externalPrimitiveTable[MaxExternalPrimitiveTableSize + 1 /* 4097 */])(void);
-const char *interpreterVersion = "Croquet Closure Cog VM [CoInterpreter VMMaker.oscog-eem.161]";
+const char *interpreterVersion = "Croquet Closure Cog VM [CoInterpreter VMMaker.oscog-eem.163]";
 sqInt minBackwardJumpCountForCompile = MinBackwardJumpCountForCompile /* 10 */;
 volatile int sendTrace;
@@ -21998,6 +21998,7 @@
    	numStack = (((usqInt) ((theFP + FoxMFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    else {
+		/* begin setIFrameHasContext: */
    	byteAtput((theFP + FoxIFrameFlags) + 2, 1);
    	numArgs = byteAt((theFP + FoxIFrameFlags) + 1);
    	byteSize = (((headerOf(methodFieldOrObj)) & LargeContextBit) != 0
@@ -22010,6 +22011,7 @@
    	numStack = (((usqInt) ((theFP + FoxIFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    theContext = eeInstantiateMethodContextByteSize(byteSize);
+	/* begin setFrameContext:to: */
    longAtput(theFP + FoxThisContext, theContext);
    /* begin storePointerUnchecked:ofObject:withValue: */
    /* begin withSmallIntegerTags: */
@@ -42620,19 +42622,22 @@
    object1 = GIV(instructionPointer);
    longAtput((sp2 = GIV(stackPointer) - BytesPerWord), object1);
    GIV(stackPointer) = sp2;
+
+	/* update state of active process */
+
    activeContext = voidVMStateForSnapshot();
+	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
+	/* begin storePointer:ofObject:withValue: */
+	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
+		possibleRootStoreIntovalue(activeProc, activeContext);
+	}
+	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    /* begin pushRemappableOop: */
    assert(addressCouldBeOop(activeContext));
    GIV(remapBuffer)[(GIV(remapBufferCount) += 1)] = activeContext;
    if (!(GIV(remapBufferCount) <= RemapBufferSize)) {
    	error("remapBuffer overflow");
    }
-	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
-	/* begin storePointer:ofObject:withValue: */
-	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
-		possibleRootStoreIntovalue(activeProc, activeContext);
-	}
-	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    incrementalGC();
    fullGC();
    /* begin snapshotCleanUp */
@@ -45439,12 +45444,26 @@
 static sqInt
 wakeHighestPriority(void)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
+    sqInt ctxt;
     sqInt header;
     sqInt p;
+    sqInt proc;
     sqInt processList;
     sqInt schedLists;
     sqInt sz;
+	/* begin externalWriteBackHeadFramePointers */
+	assert((GIV(framePointer) - GIV(stackPointer)) < LargeContextSize);
+	assert(GIV(stackPage) == (mostRecentlyUsedPage()));
+	/* begin setHeadFP:andSP:inPage: */
+	assert(GIV(stackPointer) < GIV(framePointer));
+	assert((GIV(stackPointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(stackPointer) > (((GIV(stackPage)->realStackLimit)) - LargeContextSize)));
+	assert((GIV(framePointer) < ((GIV(stackPage)->baseAddress)))
+	 && (GIV(framePointer) > (((GIV(stackPage)->realStackLimit)) - (((sqInt) LargeContextSize >> 1)))));
+	(GIV(stackPage)->headFP = GIV(framePointer));
+	(GIV(stackPage)->headSP = GIV(stackPointer));
+	assert(pageListIsWellFormed());
    schedLists = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ProcessListsIndex << ShiftForWord));
    p = (GIV(highestRunnableProcessPriority) == 0
    	? (/* begin fetchWordLengthOf: */
@@ -45455,19 +45474,24 @@
    				: header & SizeMask)),
    		((usqInt) (sz - BaseHeaderSize)) >> ShiftForWord)
    	: GIV(highestRunnableProcessPriority));
+	while (((p -= 1)) >= 0) {
+		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
+		while (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) {
-	/* index of last indexable field */
+			/* Only answer processes with a runnable suspendedContext.
+			  Discard those that aren't; the VM would crash otherwise. */
-	p -= 1;
-	while (1) {
-		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
-		if (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) break;
-		if (((p -= 1)) < 0) {
-			error("scheduler could not find a runnable process");
+			proc = removeFirstLinkOfList(processList);
+			ctxt = longAt((proc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord));
+			if (isLiveContext(ctxt)) {
+				GIV(highestRunnableProcessPriority) = p + 1;
+				return proc;
+			}
+			warning("evicted zombie process from run queue");
    	}
    }
-	GIV(highestRunnableProcessPriority) = p + 1;
-	return removeFirstLinkOfList(processList);
+	error("scheduler could not find a runnable process");
+	return null;
 }
static sqInt
Modified: branches/Cog/src/vm/gcc3x-cointerpmt.c
===================================================================
--- branches/Cog/src/vm/gcc3x-cointerpmt.c	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/gcc3x-cointerpmt.c	2012-06-21 21:26:01 UTC (rev 2559)
@@ -2,11 +2,11 @@
/* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
    from
-	CoInterpreterMT VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc
+	CoInterpreterMT VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
-static char __buildInfo[] = "CoInterpreterMT VMMaker.oscog-eem.161 uuid: d9d960b4-9f66-43a2-9d90-4fb58d541adc " __DATE__ ;
+static char __buildInfo[] = "CoInterpreterMT VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737 " __DATE__ ;
 char *__interpBuildInfo = __buildInfo;
@@ -2008,7 +2008,7 @@
    /* 575 */ (void (*)(void))0,
  0 };
 static void (*externalPrimitiveTable[MaxExternalPrimitiveTableSize + 1 /* 4097 */])(void);
-const char *interpreterVersion = "Croquet Closure Cog MT VM [CoInterpreterMT VMMaker.oscog-eem.161]";
+const char *interpreterVersion = "Croquet Closure Cog MT VM [CoInterpreterMT VMMaker.oscog-eem.163]";
 sqInt minBackwardJumpCountForCompile = MinBackwardJumpCountForCompile /* 10 */;
 volatile int sendTrace;
 sqInt willNotThreadWarnCount;
@@ -22758,6 +22758,7 @@
    	numStack = (((usqInt) ((theFP + FoxMFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    else {
+		/* begin setIFrameHasContext: */
    	byteAtput((theFP + FoxIFrameFlags) + 2, 1);
    	numArgs = byteAt((theFP + FoxIFrameFlags) + 1);
    	byteSize = (((headerOf(methodFieldOrObj)) & LargeContextBit) != 0
@@ -22770,6 +22771,7 @@
    	numStack = (((usqInt) ((theFP + FoxIFReceiver) - theSP)) >> ShiftForWord) + numArgs;
    }
    theContext = eeInstantiateMethodContextByteSize(byteSize);
+	/* begin setFrameContext:to: */
    longAtput(theFP + FoxThisContext, theContext);
    /* begin storePointerUnchecked:ofObject:withValue: */
    /* begin withSmallIntegerTags: */
@@ -44047,19 +44049,22 @@
    object1 = GIV(instructionPointer);
    longAtput((sp2 = GIV(stackPointer) - BytesPerWord), object1);
    GIV(stackPointer) = sp2;
+
+	/* update state of active process */
+
    activeContext = voidVMStateForSnapshot();
+	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
+	/* begin storePointer:ofObject:withValue: */
+	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
+		possibleRootStoreIntovalue(activeProc, activeContext);
+	}
+	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    /* begin pushRemappableOop: */
    assert(addressCouldBeOop(activeContext));
    GIV(remapBuffer)[(GIV(remapBufferCount) += 1)] = activeContext;
    if (!(GIV(remapBufferCount) <= RemapBufferSize)) {
    	error("remapBuffer overflow");
    }
-	activeProc = longAt(((longAt(((longAt((GIV(specialObjectsOop) + BaseHeaderSize) + (SchedulerAssociation << ShiftForWord))) + BaseHeaderSize) + (ValueIndex << ShiftForWord))) + BaseHeaderSize) + (ActiveProcessIndex << ShiftForWord));
-	/* begin storePointer:ofObject:withValue: */
-	if ((((usqInt) activeProc)) < (((usqInt) GIV(youngStart)))) {
-		possibleRootStoreIntovalue(activeProc, activeContext);
-	}
-	longAtput((activeProc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord), activeContext);
    incrementalGC();
    fullGC();
    /* begin snapshotCleanUp */
@@ -47191,8 +47196,6 @@
    runnable process the VM maintains a variable holding the
    highest priority runnable process. If this variable is 0 then the
    VM does not know the highest priority and must search all lists.
-	Note: It is a fatal VM error if there is no runnable process, but
-	the test can't be done here.
    
    Override to answer nil when there is no runnable process instead of
    aborting. In the threaded VM the abort test is done in transferTo:from:
@@ -47203,8 +47206,10 @@
 static sqInt
 wakeHighestPriority(void)
 {   DECL_MAYBE_SQ_GLOBAL_STRUCT
+    sqInt ctxt;
     sqInt header;
     sqInt p;
+    sqInt proc;
     sqInt processList;
     sqInt schedLists;
     sqInt sz;
@@ -47219,19 +47224,23 @@
    				: header & SizeMask)),
    		((usqInt) (sz - BaseHeaderSize)) >> ShiftForWord)
    	: GIV(highestRunnableProcessPriority));
+	while (((p -= 1)) >= 0) {
+		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
+		while (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) {
-	/* index of last indexable field */
+			/* Only answer processes with a runnable suspendedContext.
+			  Discard those that aren't; the VM would crash otherwise. */
-	p -= 1;
-	while (1) {
-		processList = longAt((schedLists + BaseHeaderSize) + (p << ShiftForWord));
-		if (!((longAt((processList + BaseHeaderSize) + (FirstLinkIndex << ShiftForWord))) == GIV(nilObj))) break;
-		if (((p -= 1)) < 0) {
-			return null;
+			proc = removeFirstLinkOfList(processList);
+			ctxt = longAt((proc + BaseHeaderSize) + (SuspendedContextIndex << ShiftForWord));
+			if (isLiveContext(ctxt)) {
+				GIV(highestRunnableProcessPriority) = p + 1;
+				return proc;
+			}
+			warning("evicted zombie process from run queue");
    	}
    }
-	GIV(highestRunnableProcessPriority) = p + 1;
-	return removeFirstLinkOfList(processList);
+	return null;
 }
Modified: branches/Cog/src/vm/interp.h
===================================================================
--- branches/Cog/src/vm/interp.h	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/interp.h	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.159 uuid: cbf7f95a-6fe2-4578-898e-47afb8524be4
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
#define VM_PROXY_MAJOR 1
Modified: branches/Cog/src/vm/vmCallback.h
===================================================================
--- branches/Cog/src/vm/vmCallback.h	2012-06-13 21:36:38 UTC (rev 2558)
+++ branches/Cog/src/vm/vmCallback.h	2012-06-21 21:26:01 UTC (rev 2559)
@@ -1,5 +1,5 @@
 /* Automatically generated by
-	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.159 uuid: cbf7f95a-6fe2-4578-898e-47afb8524be4
+	CCodeGeneratorGlobalStructure VMMaker.oscog-eem.163 uuid: 886d6e40-a3f6-4483-bdfc-f71a846f0737
  */
#define VM_CALLBACK_INC 1

    