diff options
Diffstat (limited to 'generic/tclEvent.c')
| -rw-r--r-- | generic/tclEvent.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/generic/tclEvent.c b/generic/tclEvent.c index 78b44c2..e9619bc 100644 --- a/generic/tclEvent.c +++ b/generic/tclEvent.c @@ -12,7 +12,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclEvent.c,v 1.75 2007/09/07 15:51:25 dgp Exp $ + * RCS: @(#) $Id: tclEvent.c,v 1.76 2007/09/07 18:11:24 dgp Exp $ */ #include "tclInt.h" @@ -310,6 +310,7 @@ TclDefaultBgErrorHandlerObjCmd( Tcl_Obj *keyPtr, *valuePtr; Tcl_Obj *tempObjv[2]; int code, level; + Tcl_InterpState saved; if (objc != 3) { Tcl_WrongNumArgs(interp, 1, objv, "msg options"); @@ -358,6 +359,10 @@ TclDefaultBgErrorHandlerObjCmd( } Tcl_IncrRefCount(tempObjv[1]); + if (code != TCL_ERROR) { + Tcl_SetObjResult(interp, tempObjv[1]); + } + TclNewLiteralStringObj(keyPtr, "-errorcode"); Tcl_IncrRefCount(keyPtr); Tcl_DictObjGet(NULL, objv[2], keyPtr, &valuePtr); @@ -371,17 +376,21 @@ TclDefaultBgErrorHandlerObjCmd( Tcl_DictObjGet(NULL, objv[2], keyPtr, &valuePtr); Tcl_DecrRefCount(keyPtr); if (valuePtr) { - if (code != TCL_ERROR) { - Tcl_SetObjResult(interp, tempObjv[1]); - } Tcl_IncrRefCount(valuePtr); Tcl_AppendObjToErrorInfo(interp, valuePtr); } - /* Capture stack trace now, so we can report it if [bgerror] fails. */ - valuePtr = Tcl_GetVar2Ex(interp, "errorInfo", NULL, TCL_GLOBAL_ONLY); - Tcl_IncrRefCount(valuePtr); + if (code == TCL_ERROR) { + Tcl_SetObjResult(interp, tempObjv[1]); + } + /* + * Save interpreter state so we can restore it if multiple handler + * attempts are needed. + */ + + saved = Tcl_SaveInterpState(interp, code); + /* Invoke the bgerror command. */ Tcl_AllowExceptions(interp); code = Tcl_EvalObjv(interp, 2, tempObjv, TCL_EVAL_GLOBAL); @@ -397,7 +406,7 @@ TclDefaultBgErrorHandlerObjCmd( */ if (Tcl_IsSafe(interp)) { - Tcl_ResetResult(interp); + Tcl_RestoreInterpState(interp, saved); TclObjInvoke(interp, 2, tempObjv, TCL_INVOKE_HIDDEN); } else { Tcl_Channel errChannel = Tcl_GetStdChannel(TCL_STDERR); @@ -407,11 +416,12 @@ TclDefaultBgErrorHandlerObjCmd( Tcl_IncrRefCount(resultPtr); if (Tcl_FindCommand(interp, "bgerror", NULL, TCL_GLOBAL_ONLY) == NULL) { - if (valuePtr) { - Tcl_WriteObj(errChannel, valuePtr); - Tcl_WriteChars(errChannel, "\n", -1); - } + Tcl_RestoreInterpState(interp, saved); + Tcl_WriteObj(errChannel, Tcl_GetVar2Ex(interp, + "errorInfo", NULL, TCL_GLOBAL_ONLY)); + Tcl_WriteChars(errChannel, "\n", -1); } else { + Tcl_DiscardInterpState(saved); Tcl_WriteChars(errChannel, "bgerror failed to handle background error.\n",-1); Tcl_WriteChars(errChannel, " Original error: ", -1); @@ -423,11 +433,15 @@ TclDefaultBgErrorHandlerObjCmd( } Tcl_DecrRefCount(resultPtr); Tcl_Flush(errChannel); + } else { + Tcl_DiscardInterpState(saved); } } code = TCL_OK; + } else { + Tcl_DiscardInterpState(saved); } - Tcl_DecrRefCount(valuePtr); + Tcl_DecrRefCount(tempObjv[0]); Tcl_DecrRefCount(tempObjv[1]); Tcl_ResetResult(interp); |