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-rw-r--r--generic/tclBasic.c142
-rw-r--r--generic/tclCompCmdsSZ.c4
-rw-r--r--generic/tclEnsemble.c4
-rw-r--r--generic/tclExecute.c20
-rw-r--r--generic/tclInt.h36
-rw-r--r--generic/tclInterp.c4
-rw-r--r--generic/tclNamesp.c4
7 files changed, 87 insertions, 127 deletions
diff --git a/generic/tclBasic.c b/generic/tclBasic.c
index 562cca6..55014ec 100644
--- a/generic/tclBasic.c
+++ b/generic/tclBasic.c
@@ -160,10 +160,7 @@ static Tcl_NRPostProc TEOV_Exception;
static Tcl_NRPostProc TEOV_NotFoundCallback;
static Tcl_NRPostProc TEOV_RestoreVarFrame;
static Tcl_NRPostProc TEOV_RunLeaveTraces;
-static Tcl_NRPostProc YieldToCallback;
-static void ClearTailcall(Tcl_Interp *interp,
- struct NRE_callback *tailcallPtr);
static Tcl_ObjCmdProc NRCoroInjectObjCmd;
MODULE_SCOPE const TclStubs tclStubs;
@@ -4161,7 +4158,8 @@ TclNREvalObjv(
int result;
Namespace *lookupNsPtr = iPtr->lookupNsPtr;
Command **cmdPtrPtr;
-
+ NRE_callback *callbackPtr;
+
iPtr->lookupNsPtr = NULL;
/*
@@ -4174,15 +4172,17 @@ TclNREvalObjv(
* finishes the source command and not just the target.
*/
- if (iPtr->evalFlags & TCL_EVAL_REDIRECT) {
- TclNRAddCallback(interp, NRCommand, NULL, INT2PTR(1), INT2PTR(objc), objv);
- iPtr->evalFlags &= ~TCL_EVAL_REDIRECT;
+ if (iPtr->deferredCallbacks) {
+ callbackPtr = iPtr->deferredCallbacks;
+ iPtr->deferredCallbacks = NULL;
} else {
- TclNRAddCallback(interp, NRCommand, NULL, NULL, INT2PTR(objc), objv);
+ TclNRAddCallback(interp, NRCommand, NULL, NULL, NULL, NULL);
+ callbackPtr = TOP_CB(interp);
}
- cmdPtrPtr = (Command **) &(TOP_CB(interp)->data[0]);
+ cmdPtrPtr = (Command **) &(callbackPtr->data[0]);
- TclNRSpliceDeferred(interp);
+ callbackPtr->data[2] = INT2PTR(objc);
+ callbackPtr->data[3] = (ClientData) objv;
iPtr->numLevels++;
result = TclInterpReady(interp);
@@ -4368,6 +4368,14 @@ NRCommand(
}
((Interp *)interp)->numLevels--;
+ /*
+ * If there is a tailcall, schedule it
+ */
+
+ if (data[1] && (data[1] != INT2PTR(1))) {
+ TclNRAddCallback(interp, TclNRTailcallEval, data[1], NULL, NULL, NULL);
+ }
+
/* OPT ??
* Do not interrupt a series of cleanups with async or limit checks:
* just check at the end?
@@ -4625,9 +4633,9 @@ TEOV_NotFound(
savedNsPtr = varFramePtr->nsPtr;
varFramePtr->nsPtr = lookupNsPtr;
}
- TclNRDeferCallback(interp, TEOV_NotFoundCallback, INT2PTR(handlerObjc),
+ TclDeferCallbacks(interp, 1);
+ TclNRAddCallback(interp, TEOV_NotFoundCallback, INT2PTR(handlerObjc),
newObjv, savedNsPtr, NULL);
- iPtr->evalFlags |= TCL_EVAL_REDIRECT;
return TclNREvalObjv(interp, newObjc, newObjv, TCL_EVAL_NOERR, NULL);
}
@@ -6012,7 +6020,8 @@ TclNREvalObjEx(
iPtr->cmdFramePtr = eoFramePtr;
}
- TclNRDeferCallback(interp, TEOEx_ListCallback, listPtr, eoFramePtr,
+ TclDeferCallbacks(interp, 0);
+ TclNRAddCallback(interp, TEOEx_ListCallback, listPtr, eoFramePtr,
NULL, NULL);
ListObjGetElements(listPtr, objc, objv);
@@ -8269,29 +8278,43 @@ Tcl_NRCmdSwap(
*/
void
-TclSpliceTailcall(
+TclDeferCallbacks(
Tcl_Interp *interp,
- NRE_callback *tailcallPtr)
+ int skipTailcalls)
+{
+ Interp *iPtr = (Interp *) interp;
+
+ if (iPtr->deferredCallbacks == NULL) {
+ TclNRAddCallback(interp, NRCommand, NULL, INT2PTR(skipTailcalls != 0),
+ NULL, NULL);
+ iPtr->deferredCallbacks = TOP_CB(interp);
+ } else if (skipTailcalls) {
+ iPtr->deferredCallbacks->data[1] = INT2PTR(skipTailcalls != 0);
+ }
+}
+
+void
+TclSetTailcall(
+ Tcl_Interp *interp,
+ Tcl_Obj *listPtr)
{
/*
* Find the splicing spot: right before the NRCommand of the thing
- * being tailcalled. Note that we skip NRCommands marked in data[1]
+ * being tailcalled. Note that we skip NRCommands marked by a 1 in data[1]
* (used by command redirectors).
*/
NRE_callback *runPtr;
for (runPtr = TOP_CB(interp); runPtr; runPtr = runPtr->nextPtr) {
- if (((runPtr->procPtr) == NRCommand) && !runPtr->data[1]) {
+ if (((runPtr->procPtr) == NRCommand) && !runPtr->data[1]) {
break;
}
}
if (!runPtr) {
Tcl_Panic("tailcall cannot find the right splicing spot: should not happen!");
}
-
- tailcallPtr->nextPtr = runPtr->nextPtr;
- runPtr->nextPtr = tailcallPtr;
+ runPtr->data[1] = listPtr;
}
int
@@ -8321,7 +8344,7 @@ TclNRTailcallObjCmd(
*/
if (iPtr->varFramePtr->tailcallPtr) {
- ClearTailcall(interp, iPtr->varFramePtr->tailcallPtr);
+ Tcl_DecrRefCount(iPtr->varFramePtr->tailcallPtr);
iPtr->varFramePtr->tailcallPtr = NULL;
}
@@ -8336,23 +8359,20 @@ TclNRTailcallObjCmd(
Tcl_Obj *listPtr, *nsObjPtr;
Tcl_Namespace *nsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr;
Tcl_Namespace *ns1Ptr;
- NRE_callback *tailcallPtr;
- listPtr = Tcl_NewListObj(objc-1, objv+1);
- Tcl_IncrRefCount(listPtr);
+ /* The tailcall data is in a Tcl list: the first element is the
+ * namespace, the rest the command to be tailcalled. */
+
+ listPtr = Tcl_NewListObj(objc, objv);
nsObjPtr = Tcl_NewStringObj(nsPtr->fullName, -1);
if ((TCL_OK != TclGetNamespaceFromObj(interp, nsObjPtr, &ns1Ptr))
|| (nsPtr != ns1Ptr)) {
Tcl_Panic("Tailcall failed to find the proper namespace");
}
- Tcl_IncrRefCount(nsObjPtr);
-
- TclNRAddCallback(interp, TclNRTailcallEval, listPtr, nsObjPtr,
- NULL, NULL);
- tailcallPtr = TOP_CB(interp);
- TOP_CB(interp) = tailcallPtr->nextPtr;
- iPtr->varFramePtr->tailcallPtr = tailcallPtr;
+ TclListObjSetElement(interp, listPtr, 0, nsObjPtr);
+
+ iPtr->varFramePtr->tailcallPtr = listPtr;
}
return TCL_RETURN;
}
@@ -8364,12 +8384,14 @@ TclNRTailcallEval(
int result)
{
Interp *iPtr = (Interp *) interp;
- Tcl_Obj *listPtr = data[0];
- Tcl_Obj *nsObjPtr = data[1];
+ Tcl_Obj *listPtr = data[0], *nsObjPtr;
Tcl_Namespace *nsPtr;
int objc;
Tcl_Obj **objv;
+ Tcl_ListObjGetElements(interp, listPtr, &objc, &objv);
+ nsObjPtr = objv[0];
+
if (result == TCL_OK) {
result = TclGetNamespaceFromObj(interp, nsObjPtr, &nsPtr);
}
@@ -8388,10 +8410,10 @@ TclNRTailcallEval(
* Perform the tailcall
*/
- TclNRDeferCallback(interp, TailcallCleanup, listPtr, nsObjPtr, NULL,NULL);
+ TclDeferCallbacks(interp, 0);
+ TclNRAddCallback(interp, TailcallCleanup, listPtr, NULL, NULL,NULL);
iPtr->lookupNsPtr = (Namespace *) nsPtr;
- ListObjGetElements(listPtr, objc, objv);
- return TclNREvalObjv(interp, objc, objv, 0, NULL);
+ return TclNREvalObjv(interp, objc-1, objv+1, 0, NULL);
}
static int
@@ -8401,19 +8423,9 @@ TailcallCleanup(
int result)
{
Tcl_DecrRefCount((Tcl_Obj *) data[0]);
- Tcl_DecrRefCount((Tcl_Obj *) data[1]);
return result;
}
-static void
-ClearTailcall(
- Tcl_Interp *interp,
- NRE_callback *tailcallPtr)
-{
- TailcallCleanup(tailcallPtr->data, interp, TCL_OK);
- TCLNR_FREE(interp, tailcallPtr);
-}
-
void
Tcl_NRAddCallback(
@@ -8515,50 +8527,32 @@ TclNRYieldToObjCmd(
* This is essentially code from TclNRTailcallObjCmd
*/
- listPtr = Tcl_NewListObj(objc-1, objv+1);
- Tcl_IncrRefCount(listPtr);
+ /*
+ * Add the tailcall in the caller env, then just yield.
+ *
+ * This is essentially code from TclNRTailcallObjCmd
+ */
+
+ listPtr = Tcl_NewListObj(objc, objv);
nsObjPtr = Tcl_NewStringObj(nsPtr->fullName, -1);
if ((TCL_OK != TclGetNamespaceFromObj(interp, nsObjPtr, &ns1Ptr))
|| (nsPtr != ns1Ptr)) {
Tcl_Panic("yieldto failed to find the proper namespace");
}
- Tcl_IncrRefCount(nsObjPtr);
+ TclListObjSetElement(interp, listPtr, 0, nsObjPtr);
+
/*
* Add the callback in the caller's env, then instruct TEBC to yield.
*/
iPtr->execEnvPtr = corPtr->callerEEPtr;
- TclNRAddCallback(interp, YieldToCallback, corPtr, listPtr, nsObjPtr,
- NULL);
+ TclSetTailcall(interp, listPtr);
iPtr->execEnvPtr = corPtr->eePtr;
return TclNRYieldObjCmd(INT2PTR(CORO_ACTIVATE_YIELDM), interp, 1, objv);
}
-
-static int
-YieldToCallback(
- ClientData data[],
- Tcl_Interp *interp,
- int result)
-{
- /* CoroutineData *corPtr = data[0];*/
- Tcl_Obj *listPtr = data[1];
- ClientData nsPtr = data[2];
- NRE_callback *cbPtr;
-
- /*
- * yieldTo: invoke the command using tailcall tech.
- */
-
- TclNRAddCallback(interp, TclNRTailcallEval, listPtr, nsPtr, NULL, NULL);
- cbPtr = TOP_CB(interp);
- TOP_CB(interp) = cbPtr->nextPtr;
-
- TclSpliceTailcall(interp, cbPtr);
- return TCL_OK;
-}
static int
RewindCoroutineCallback(
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index 1d04d8b..6e31481 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -1953,11 +1953,13 @@ TclCompileTailcallCmd(
return TCL_ERROR;
}
+ /* make room for the nsObjPtr */
+ CompileWord(envPtr, tokenPtr, interp, 0);
for (i=1 ; i<parsePtr->numWords ; i++) {
tokenPtr = TokenAfter(tokenPtr);
CompileWord(envPtr, tokenPtr, interp, i);
}
- TclEmitInstInt1( INST_TAILCALL, parsePtr->numWords-1, envPtr);
+ TclEmitInstInt1( INST_TAILCALL, parsePtr->numWords, envPtr);
return TCL_OK;
}
diff --git a/generic/tclEnsemble.c b/generic/tclEnsemble.c
index 9a2d598..2753876 100644
--- a/generic/tclEnsemble.c
+++ b/generic/tclEnsemble.c
@@ -1914,7 +1914,7 @@ NsEnsembleImplementationCmdNR(
* Hand off to the target command.
*/
- iPtr->evalFlags |= TCL_EVAL_REDIRECT;
+ TclDeferCallbacks(interp, /* skip tailcalls */ 1);
return TclNREvalObjEx(interp, copyPtr, TCL_EVAL_INVOKE, NULL,INT_MIN);
}
@@ -2122,7 +2122,7 @@ EnsembleUnknownCallback(
*/
Tcl_Preserve(ensemblePtr);
- ((Interp *) interp)->evalFlags |= TCL_EVAL_REDIRECT;
+ TclDeferCallbacks (interp, /*skip tailcalls */ 1);
result = Tcl_EvalObjv(interp, paramc, paramv, 0);
if ((result == TCL_OK) && (ensemblePtr->flags & ENSEMBLE_DEAD)) {
if (!Tcl_InterpDeleted(interp)) {
diff --git a/generic/tclExecute.c b/generic/tclExecute.c
index ade71f6..af60a95 100644
--- a/generic/tclExecute.c
+++ b/generic/tclExecute.c
@@ -2399,7 +2399,6 @@ TEBCresume(
case INST_TAILCALL: {
Tcl_Obj *listPtr, *nsObjPtr;
- NRE_callback *tailcallPtr;
opnd = TclGetUInt1AtPtr(pc+1);
@@ -2433,18 +2432,12 @@ TEBCresume(
listPtr = Tcl_NewListObj(opnd, &OBJ_AT_DEPTH(opnd-1));
nsObjPtr = Tcl_NewStringObj(iPtr->varFramePtr->nsPtr->fullName, -1);
- Tcl_IncrRefCount(listPtr);
- Tcl_IncrRefCount(nsObjPtr);
- TclNRAddCallback(interp, TclNRTailcallEval, listPtr, nsObjPtr,
- NULL, NULL);
-
- /*
- * Unstitch ourselves and do a [return].
- */
+ TclListObjSetElement(interp, listPtr, 0, nsObjPtr);
+ if (iPtr->varFramePtr->tailcallPtr) {
+ Tcl_DecrRefCount(iPtr->varFramePtr->tailcallPtr);
+ }
+ iPtr->varFramePtr->tailcallPtr = listPtr;
- tailcallPtr = TOP_CB(interp);
- TOP_CB(interp) = tailcallPtr->nextPtr;
- iPtr->varFramePtr->tailcallPtr = tailcallPtr;
result = TCL_RETURN;
cleanup = opnd;
goto processExceptionReturn;
@@ -3054,8 +3047,9 @@ TEBCresume(
DECACHE_STACK_INFO();
pc += 6;
TEBC_YIELD();
+
TclNRAddCallback(interp, TclClearRootEnsemble, NULL,NULL,NULL,NULL);
- iPtr->evalFlags |= TCL_EVAL_REDIRECT;
+ TclDeferCallbacks(interp, /*skip tailcalls */ 1);
return TclNREvalObjEx(interp, objPtr, TCL_EVAL_INVOKE, NULL, INT_MIN);
/*
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 537afb3..6cf594e 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -1154,7 +1154,7 @@ typedef struct CallFrame {
* meaning of the value is, which we do not
* specify. */
LocalCache *localCachePtr;
- struct NRE_callback *tailcallPtr;
+ Tcl_Obj *tailcallPtr;
/* NULL if no tailcall is scheduled */
} CallFrame;
@@ -2250,7 +2250,6 @@ typedef struct InterpList {
#define TCL_ALLOW_EXCEPTIONS 4
#define TCL_EVAL_FILE 2
#define TCL_EVAL_CTX 8
-#define TCL_EVAL_REDIRECT 16
/*
* Flag bits for Interp structures:
@@ -2805,8 +2804,8 @@ MODULE_SCOPE Tcl_ObjCmdProc TclNRYieldObjCmd;
MODULE_SCOPE Tcl_ObjCmdProc TclNRYieldmObjCmd;
MODULE_SCOPE Tcl_ObjCmdProc TclNRYieldToObjCmd;
-MODULE_SCOPE void TclSpliceTailcall(Tcl_Interp *interp,
- struct NRE_callback *tailcallPtr);
+MODULE_SCOPE void TclSetTailcall(Tcl_Interp *interp, Tcl_Obj *tailcallPtr);
+MODULE_SCOPE void TclDeferCallbacks(Tcl_Interp *interp, int skipTailcall);
/*
* This structure holds the data for the various iteration callbacks used to
@@ -4808,35 +4807,6 @@ typedef struct NRE_callback {
TOP_CB(interp) = callbackPtr; \
} while (0)
-#define TclNRDeferCallback(interp,postProcPtr,data0,data1,data2,data3) \
- do { \
- NRE_callback *callbackPtr; \
- TCLNR_ALLOC((interp), (callbackPtr)); \
- callbackPtr->procPtr = (postProcPtr); \
- callbackPtr->data[0] = (ClientData)(data0); \
- callbackPtr->data[1] = (ClientData)(data1); \
- callbackPtr->data[2] = (ClientData)(data2); \
- callbackPtr->data[3] = (ClientData)(data3); \
- callbackPtr->nextPtr = ((Interp *)interp)->deferredCallbacks; \
- ((Interp *)interp)->deferredCallbacks = callbackPtr; \
- } while (0)
-
-#define TclNRSpliceCallbacks(interp, topPtr) \
- do { \
- NRE_callback *bottomPtr = topPtr; \
- while (bottomPtr->nextPtr) { \
- bottomPtr = bottomPtr->nextPtr; \
- } \
- bottomPtr->nextPtr = TOP_CB(interp); \
- TOP_CB(interp) = topPtr; \
- } while (0)
-
-#define TclNRSpliceDeferred(interp) \
- if (((Interp *)interp)->deferredCallbacks) { \
- TclNRSpliceCallbacks(interp, ((Interp *)interp)->deferredCallbacks); \
- ((Interp *)interp)->deferredCallbacks = NULL; \
- }
-
#if NRE_USE_SMALL_ALLOC
#define TCLNR_ALLOC(interp, ptr) \
TclSmallAllocEx(interp, sizeof(NRE_callback), (ptr))
diff --git a/generic/tclInterp.c b/generic/tclInterp.c
index 0b0f652..2e90caf 100644
--- a/generic/tclInterp.c
+++ b/generic/tclInterp.c
@@ -1798,9 +1798,9 @@ AliasNRCmd(
*/
if (isRootEnsemble) {
- TclNRDeferCallback(interp, TclClearRootEnsemble, NULL, NULL, NULL, NULL);
+ TclNRAddCallback(interp, TclClearRootEnsemble, NULL, NULL, NULL, NULL);
}
- iPtr->evalFlags |= TCL_EVAL_REDIRECT;
+ TclDeferCallbacks(interp, /* skip tailcalls */ 1);
return Tcl_NREvalObj(interp, listPtr, flags);
}
diff --git a/generic/tclNamesp.c b/generic/tclNamesp.c
index 8da4b42..ee8aaa6 100644
--- a/generic/tclNamesp.c
+++ b/generic/tclNamesp.c
@@ -423,7 +423,7 @@ Tcl_PopCallFrame(
framePtr->nsPtr = NULL;
if (framePtr->tailcallPtr) {
- TclSpliceTailcall(interp, framePtr->tailcallPtr);
+ TclSetTailcall(interp, framePtr->tailcallPtr);
}
}
@@ -1945,7 +1945,7 @@ InvokeImportedNRCmd(
ImportedCmdData *dataPtr = clientData;
Command *realCmdPtr = dataPtr->realCmdPtr;
- ((Interp *) interp)->evalFlags |= TCL_EVAL_REDIRECT;
+ TclDeferCallbacks(interp, /* skip tailcalls */ 1);
return Tcl_NRCmdSwap(interp, (Tcl_Command) realCmdPtr, objc, objv, 0);
}
generated by cgit v0.12 at 2024-07-15 18:15:13 (GMT)