Itcl - the [incr Tcl] extension

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Overview
Comment:code review: revert clazzObjectPtr back to unused, remove increment workaround for OO 1.0.2 (thisPtr of clazz is removed with last ref to engine, no matter how many references still exist).
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SHA3-256: b8e09f7f1701c921d0f3f4cb60a27ba049c62554650b58adc70ba0466bd655c2
User & Date: sebres 2019-02-09 20:22:08.475
Context
2019-02-10
01:46
restored clazzObjectPtr and check via this object due to timing problem (clazzClassPtr returns still valid this-object by deleted oo-subsystem sporadicaly, well reproducible within DEBUG-build). check-in: abf70db293 user: sebres tags: trunk
2019-02-09
20:23
merge trunk check-in: f95dd315b2 user: sebres tags: sebres-memopt-perf-branch
20:22
code review: revert clazzObjectPtr back to unused, remove increment workaround for OO 1.0.2 (thisPtr of clazz is removed with last ref to engine, no matter how many references still exist). check-in: b8e09f7f17 user: sebres tags: trunk
2019-02-08
23:51
merge bug-1dc2d851eb: fixes several segfault, see [1dc2d851eb] check-in: e0601c3371 user: sebres tags: trunk
Changes
Unified Diff Ignore Whitespace Patch
Changes to generic/itcl2TclOO.c.
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    Interp *iPtr = (Interp *) interp;
    CallFrame *framePtr = iPtr->varFramePtr;
    if (framePtr == NULL || !(framePtr->isProcCallFrame & FRAME_IS_METHOD)) {
        return 0;
    }
    return 1;
}

/* needed as work around for problem in Tcl 8.6.2 TclOO */
void
Itcl_IncrObjectRefCount(Tcl_Object ptr) {
  Object * oPtr = (Object *) ptr;
  oPtr->refCount++;
}








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    Interp *iPtr = (Interp *) interp;
    CallFrame *framePtr = iPtr->varFramePtr;
    if (framePtr == NULL || !(framePtr->isProcCallFrame & FRAME_IS_METHOD)) {
        return 0;
    }
    return 1;
}
Changes to generic/itcl2TclOO.h.
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MODULE_SCOPE int Itcl_SelfCmd(ClientData clientData, Tcl_Interp *interp,
        int objc, Tcl_Obj *const *objv);
MODULE_SCOPE int Itcl_IsMethodCallFrame(Tcl_Interp *interp);
MODULE_SCOPE int Itcl_InvokeEnsembleMethod(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
    Tcl_Obj *namePtr, Tcl_Proc *procPtr, int objc, Tcl_Obj *const *objv);
MODULE_SCOPE int Itcl_InvokeProcedureMethod(ClientData clientData, Tcl_Interp *interp,
	int objc, Tcl_Obj *const *objv);
MODULE_SCOPE void Itcl_IncrObjectRefCount(Tcl_Object ptr);








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MODULE_SCOPE int Itcl_SelfCmd(ClientData clientData, Tcl_Interp *interp,
        int objc, Tcl_Obj *const *objv);
MODULE_SCOPE int Itcl_IsMethodCallFrame(Tcl_Interp *interp);
MODULE_SCOPE int Itcl_InvokeEnsembleMethod(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
    Tcl_Obj *namePtr, Tcl_Proc *procPtr, int objc, Tcl_Obj *const *objv);
MODULE_SCOPE int Itcl_InvokeProcedureMethod(ClientData clientData, Tcl_Interp *interp,
	int objc, Tcl_Obj *const *objv);
Changes to generic/itclBase.c.
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    if (clazzObjectPtr == NULL) {
        Tcl_AppendResult(interp,
                "ITCL: cannot get Object for ::itcl::clazz for class \"",
                "::itcl::clazz", "\"", NULL);
        return TCL_ERROR;
    }

    /* work around for SF bug #254 needed because of problem in TclOO 1.0.2 !! */
    if (Tcl_PkgPresent(interp, "TclOO", "1.0.2", 1) != NULL) {
	Itcl_IncrObjectRefCount(clazzObjectPtr);
    }

    infoPtr->clazzObjectPtr = clazzObjectPtr;
    infoPtr->clazzClassPtr = Tcl_GetObjectAsClass(clazzObjectPtr);

    /*
     *  Initialize the ensemble package first, since we need this
     *  for other parts of [incr Tcl].
     */









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    if (clazzObjectPtr == NULL) {
        Tcl_AppendResult(interp,
                "ITCL: cannot get Object for ::itcl::clazz for class \"",
                "::itcl::clazz", "\"", NULL);
        return TCL_ERROR;
    }







    infoPtr->clazzClassPtr = Tcl_GetObjectAsClass(clazzObjectPtr);

    /*
     *  Initialize the ensemble package first, since we need this
     *  for other parts of [incr Tcl].
     */
︙︙
Changes to generic/itclClass.c.
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    void *callbackPtr;
    int result;
    int newEntry;
    ItclResolveInfo *resolveInfoPtr;
    Tcl_Obj *cmdNamePtr;

    if (!infoPtr->clazzClassPtr
	|| Tcl_ObjectDeleted(infoPtr->clazzObjectPtr)
    ) {
	Tcl_AppendResult(interp, "oo-subsystem is deleted", NULL);
	return TCL_ERROR;
    }

    /*
     * check for an empty class name to avoid a crash








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    void *callbackPtr;
    int result;
    int newEntry;
    ItclResolveInfo *resolveInfoPtr;
    Tcl_Obj *cmdNamePtr;

    if (!infoPtr->clazzClassPtr
	|| Tcl_ObjectDeleted(Tcl_GetClassAsObject(infoPtr->clazzClassPtr))
    ) {
	Tcl_AppendResult(interp, "oo-subsystem is deleted", NULL);
	return TCL_ERROR;
    }

    /*
     * check for an empty class name to avoid a crash
︙︙
Changes to generic/itclInt.h.
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				     * otherwise NULL */
    Tcl_ObjectMetadataType *class_meta_type;
                                    /* type for getting the Itcl class info
                                     * from a TclOO Tcl_Object */
    const Tcl_ObjectMetadataType *object_meta_type;
                                    /* type for getting the Itcl object info
                                     * from a TclOO Tcl_Object */
    Tcl_Object clazzObjectPtr;      /* the root object of Itcl */
    Tcl_Class clazzClassPtr;        /* the root class of Itcl */
    struct EnsembleInfo *ensembleInfo;
    struct ItclClass *currContextIclsPtr;
                                    /* context class for delegated option
                                     * handling */
    int currClassFlags;             /* flags for the class just in creation */
    int buildingWidget;             /* set if in construction of a widget */








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				     * otherwise NULL */
    Tcl_ObjectMetadataType *class_meta_type;
                                    /* type for getting the Itcl class info
                                     * from a TclOO Tcl_Object */
    const Tcl_ObjectMetadataType *object_meta_type;
                                    /* type for getting the Itcl object info
                                     * from a TclOO Tcl_Object */
    Tcl_Object unused1;             /* the root object of Itcl */
    Tcl_Class clazzClassPtr;        /* the root class of Itcl */
    struct EnsembleInfo *ensembleInfo;
    struct ItclClass *currContextIclsPtr;
                                    /* context class for delegated option
                                     * handling */
    int currClassFlags;             /* flags for the class just in creation */
    int buildingWidget;             /* set if in construction of a widget */
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