diff options
Diffstat (limited to 'generic/tclInterp.c')
| -rw-r--r-- | generic/tclInterp.c | 636 |
1 files changed, 464 insertions, 172 deletions
diff --git a/generic/tclInterp.c b/generic/tclInterp.c index a9adec1..0da5d47 100644 --- a/generic/tclInterp.c +++ b/generic/tclInterp.c @@ -9,8 +9,6 @@ * * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. - * - * RCS: @(#) $Id: tclInterp.c,v 1.110 2009/12/29 14:55:42 dkf Exp $ */ #include "tclInt.h" @@ -181,6 +179,37 @@ typedef struct ScriptLimitCallbackKey { } ScriptLimitCallbackKey; /* + * TIP#143 limit handler internal representation. + */ + +struct LimitHandler { + int flags; /* The state of this particular handler. */ + Tcl_LimitHandlerProc *handlerProc; + /* The handler callback. */ + ClientData clientData; /* Opaque argument to the handler callback. */ + Tcl_LimitHandlerDeleteProc *deleteProc; + /* How to delete the clientData. */ + LimitHandler *prevPtr; /* Previous item in linked list of + * handlers. */ + LimitHandler *nextPtr; /* Next item in linked list of handlers. */ +}; + +/* + * Values for the LimitHandler flags field. + * LIMIT_HANDLER_ACTIVE - Whether the handler is currently being + * processed; handlers are never to be entered reentrantly. + * LIMIT_HANDLER_DELETED - Whether the handler has been deleted. This + * should not normally be observed because when a handler is + * deleted it is also spliced out of the list of handlers, but + * even so we will be careful. + */ + +#define LIMIT_HANDLER_ACTIVE 0x01 +#define LIMIT_HANDLER_DELETED 0x02 + + + +/* * Prototypes for local static functions: */ @@ -210,6 +239,9 @@ static int SlaveBgerror(Tcl_Interp *interp, Tcl_Obj *const objv[]); static Tcl_Interp * SlaveCreate(Tcl_Interp *interp, Tcl_Obj *pathPtr, int safe); +static int SlaveDebugCmd(Tcl_Interp *interp, + Tcl_Interp *slaveInterp, + int objc, Tcl_Obj *const objv[]); static int SlaveEval(Tcl_Interp *interp, Tcl_Interp *slaveInterp, int objc, Tcl_Obj *const objv[]); static int SlaveExpose(Tcl_Interp *interp, @@ -247,6 +279,12 @@ static void DeleteScriptLimitCallback(ClientData clientData); static void RunLimitHandlers(LimitHandler *handlerPtr, Tcl_Interp *interp); static void TimeLimitCallback(ClientData clientData); + +/* NRE enabling */ +static Tcl_NRPostProc NRPostInvokeHidden; +static Tcl_ObjCmdProc NRInterpCmd; +static Tcl_ObjCmdProc NRSlaveCmd; + /* *---------------------------------------------------------------------- @@ -299,8 +337,8 @@ Tcl_Init( { if (tclPreInitScript != NULL) { if (Tcl_Eval(interp, tclPreInitScript) == TCL_ERROR) { - return (TCL_ERROR); - }; + return TCL_ERROR; + } } /* @@ -435,7 +473,7 @@ TclInterpInit( Master *masterPtr; Slave *slavePtr; - interpInfoPtr = (InterpInfo *) ckalloc(sizeof(InterpInfo)); + interpInfoPtr = ckalloc(sizeof(InterpInfo)); ((Interp *) interp)->interpInfo = interpInfoPtr; masterPtr = &interpInfoPtr->master; @@ -449,7 +487,8 @@ TclInterpInit( slavePtr->interpCmd = NULL; Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS); - Tcl_CreateObjCommand(interp, "interp", Tcl_InterpObjCmd, NULL, NULL); + Tcl_NRCreateCommand(interp, "interp", Tcl_InterpObjCmd, NRInterpCmd, + NULL, NULL); Tcl_CallWhenDeleted(interp, InterpInfoDeleteProc, NULL); return TCL_OK; @@ -531,7 +570,7 @@ InterpInfoDeleteProc( } Tcl_DeleteHashTable(&slavePtr->aliasTable); - ckfree((char *) interpInfoPtr); + ckfree(interpInfoPtr); } /* @@ -558,19 +597,32 @@ Tcl_InterpObjCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { + return Tcl_NRCallObjProc(interp, NRInterpCmd, clientData, objc, objv); +} + +static int +NRInterpCmd( + ClientData clientData, /* Unused. */ + Tcl_Interp *interp, /* Current interpreter. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[]) /* Argument objects. */ +{ + Tcl_Interp *slaveInterp; int index; static const char *const options[] = { "alias", "aliases", "bgerror", "cancel", - "create", "delete", "eval", "exists", - "expose", "hide", "hidden", "issafe", + "create", "debug", "delete", + "eval", "exists", "expose", + "hide", "hidden", "issafe", "invokehidden", "limit", "marktrusted", "recursionlimit", "slaves", "share", "target", "transfer", NULL }; enum option { OPT_ALIAS, OPT_ALIASES, OPT_BGERROR, OPT_CANCEL, - OPT_CREATE, OPT_DELETE, OPT_EVAL, OPT_EXISTS, - OPT_EXPOSE, OPT_HIDE, OPT_HIDDEN, OPT_ISSAFE, + OPT_CREATE, OPT_DEBUG, OPT_DELETE, + OPT_EVAL, OPT_EXISTS, OPT_EXPOSE, + OPT_HIDE, OPT_HIDDEN, OPT_ISSAFE, OPT_INVOKEHID, OPT_LIMIT, OPT_MARKTRUSTED,OPT_RECLIMIT, OPT_SLAVES, OPT_SHARE, OPT_TARGET, OPT_TRANSFER }; @@ -585,7 +637,7 @@ Tcl_InterpObjCmd( } switch ((enum option) index) { case OPT_ALIAS: { - Tcl_Interp *slaveInterp, *masterInterp; + Tcl_Interp *masterInterp; if (objc < 4) { aliasArgs: @@ -619,18 +671,13 @@ Tcl_InterpObjCmd( } goto aliasArgs; } - case OPT_ALIASES: { - Tcl_Interp *slaveInterp; - + case OPT_ALIASES: slaveInterp = GetInterp2(interp, objc, objv); if (slaveInterp == NULL) { return TCL_ERROR; } return AliasList(interp, slaveInterp); - } - case OPT_BGERROR: { - Tcl_Interp *slaveInterp; - + case OPT_BGERROR: if (objc != 3 && objc != 4) { Tcl_WrongNumArgs(interp, 2, objv, "path ?cmdPrefix?"); return TCL_ERROR; @@ -640,12 +687,10 @@ Tcl_InterpObjCmd( return TCL_ERROR; } return SlaveBgerror(interp, slaveInterp, objc - 3, objv + 3); - } case OPT_CANCEL: { int i, flags; - Tcl_Interp *slaveInterp; Tcl_Obj *resultObjPtr; - static const char *const options[] = { + static const char *const cancelOptions[] = { "-unwind", "--", NULL }; enum option { @@ -658,63 +703,67 @@ Tcl_InterpObjCmd( if (TclGetString(objv[i])[0] != '-') { break; } - if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, - &index) != TCL_OK) { + if (Tcl_GetIndexFromObj(interp, objv[i], cancelOptions, "option", + 0, &index) != TCL_OK) { return TCL_ERROR; } switch ((enum option) index) { - case OPT_UNWIND: - /* - * The evaluation stack in the target interp is to be - * unwound. - */ - flags |= TCL_CANCEL_UNWIND; - break; - case OPT_LAST: - i++; - goto endOfForLoop; + case OPT_UNWIND: + /* + * The evaluation stack in the target interp is to be unwound. + */ + + flags |= TCL_CANCEL_UNWIND; + break; + case OPT_LAST: + i++; + goto endOfForLoop; } } - endOfForLoop: - + endOfForLoop: if ((i + 2) < objc) { - Tcl_WrongNumArgs(interp, 2, objv, "?-unwind? ?--? ?path? ?result?"); + Tcl_WrongNumArgs(interp, 2, objv, + "?-unwind? ?--? ?path? ?result?"); return TCL_ERROR; } /* - * Did they specify a slave interp to cancel the script in - * progress in? If not, use the current interp. + * Did they specify a slave interp to cancel the script in progress + * in? If not, use the current interp. */ if (i < objc) { slaveInterp = GetInterp(interp, objv[i]); + if (slaveInterp == NULL) { + return TCL_ERROR; + } i++; } else { slaveInterp = interp; } - if (slaveInterp != NULL) { - if (i < objc) { - resultObjPtr = objv[i]; - Tcl_IncrRefCount(resultObjPtr); /* Tcl_CancelEval removes this ref. */ - i++; - } else { - resultObjPtr = NULL; - } + if (i < objc) { + resultObjPtr = objv[i]; + + /* + * Tcl_CancelEval removes this reference. + */ - return Tcl_CancelEval(slaveInterp, resultObjPtr, 0, flags); + Tcl_IncrRefCount(resultObjPtr); + i++; } else { - return TCL_ERROR; + resultObjPtr = NULL; } + + return Tcl_CancelEval(slaveInterp, resultObjPtr, 0, flags); } case OPT_CREATE: { int i, last, safe; Tcl_Obj *slavePtr; char buf[16 + TCL_INTEGER_SPACE]; - static const char *const options[] = { + static const char *const createOptions[] = { "-safe", "--", NULL }; enum option { @@ -731,8 +780,8 @@ Tcl_InterpObjCmd( last = 0; for (i = 2; i < objc; i++) { if ((last == 0) && (Tcl_GetString(objv[i])[0] == '-')) { - if (Tcl_GetIndexFromObj(interp, objv[i], options, "option", 0, - &index) != TCL_OK) { + if (Tcl_GetIndexFromObj(interp, objv[i], createOptions, + "option", 0, &index) != TCL_OK) { return TCL_ERROR; } if (index == OPT_SAFE) { @@ -778,10 +827,23 @@ Tcl_InterpObjCmd( Tcl_SetObjResult(interp, slavePtr); return TCL_OK; } + case OPT_DEBUG: /* TIP #378 */ + /* + * Currently only -frame supported, otherwise ?-option ?value?? + */ + + if (objc < 3 || objc > 5) { + Tcl_WrongNumArgs(interp, 2, objv, "path ?-frame ?bool??"); + return TCL_ERROR; + } + slaveInterp = GetInterp(interp, objv[2]); + if (slaveInterp == NULL) { + return TCL_ERROR; + } + return SlaveDebugCmd(interp, slaveInterp, objc - 3, objv + 3); case OPT_DELETE: { int i; InterpInfo *iiPtr; - Tcl_Interp *slaveInterp; for (i = 2; i < objc; i++) { slaveInterp = GetInterp(interp, objv[i]); @@ -790,6 +852,8 @@ Tcl_InterpObjCmd( } else if (slaveInterp == interp) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "cannot delete the current interpreter", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "DELETESELF", NULL); return TCL_ERROR; } iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; @@ -798,9 +862,7 @@ Tcl_InterpObjCmd( } return TCL_OK; } - case OPT_EVAL: { - Tcl_Interp *slaveInterp; - + case OPT_EVAL: if (objc < 4) { Tcl_WrongNumArgs(interp, 2, objv, "path arg ?arg ...?"); return TCL_ERROR; @@ -810,12 +872,9 @@ Tcl_InterpObjCmd( return TCL_ERROR; } return SlaveEval(interp, slaveInterp, objc - 3, objv + 3); - } case OPT_EXISTS: { - int exists; - Tcl_Interp *slaveInterp; + int exists = 1; - exists = 1; slaveInterp = GetInterp2(interp, objc, objv); if (slaveInterp == NULL) { if (objc > 3) { @@ -827,9 +886,7 @@ Tcl_InterpObjCmd( Tcl_SetObjResult(interp, Tcl_NewBooleanObj(exists)); return TCL_OK; } - case OPT_EXPOSE: { - Tcl_Interp *slaveInterp; - + case OPT_EXPOSE: if ((objc < 4) || (objc > 5)) { Tcl_WrongNumArgs(interp, 2, objv, "path hiddenCmdName ?cmdName?"); return TCL_ERROR; @@ -839,10 +896,7 @@ Tcl_InterpObjCmd( return TCL_ERROR; } return SlaveExpose(interp, slaveInterp, objc - 3, objv + 3); - } - case OPT_HIDE: { - Tcl_Interp *slaveInterp; /* A slave. */ - + case OPT_HIDE: if ((objc < 4) || (objc > 5)) { Tcl_WrongNumArgs(interp, 2, objv, "path cmdName ?hiddenCmdName?"); return TCL_ERROR; @@ -852,30 +906,22 @@ Tcl_InterpObjCmd( return TCL_ERROR; } return SlaveHide(interp, slaveInterp, objc - 3, objv + 3); - } - case OPT_HIDDEN: { - Tcl_Interp *slaveInterp; /* A slave. */ - + case OPT_HIDDEN: slaveInterp = GetInterp2(interp, objc, objv); if (slaveInterp == NULL) { return TCL_ERROR; } return SlaveHidden(interp, slaveInterp); - } - case OPT_ISSAFE: { - Tcl_Interp *slaveInterp; - + case OPT_ISSAFE: slaveInterp = GetInterp2(interp, objc, objv); if (slaveInterp == NULL) { return TCL_ERROR; } Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_IsSafe(slaveInterp))); return TCL_OK; - } case OPT_INVOKEHID: { - int i, index; + int i; const char *namespaceName; - Tcl_Interp *slaveInterp; static const char *const hiddenOptions[] = { "-global", "-namespace", "--", NULL }; @@ -918,7 +964,6 @@ Tcl_InterpObjCmd( objv + i); } case OPT_LIMIT: { - Tcl_Interp *slaveInterp; static const char *const limitTypes[] = { "commands", "time", NULL }; @@ -947,9 +992,7 @@ Tcl_InterpObjCmd( return SlaveTimeLimitCmd(interp, slaveInterp, 4, objc, objv); } } - case OPT_MARKTRUSTED: { - Tcl_Interp *slaveInterp; - + case OPT_MARKTRUSTED: if (objc != 3) { Tcl_WrongNumArgs(interp, 2, objv, "path"); return TCL_ERROR; @@ -959,10 +1002,7 @@ Tcl_InterpObjCmd( return TCL_ERROR; } return SlaveMarkTrusted(interp, slaveInterp); - } - case OPT_RECLIMIT: { - Tcl_Interp *slaveInterp; - + case OPT_RECLIMIT: if (objc != 3 && objc != 4) { Tcl_WrongNumArgs(interp, 2, objv, "path ?newlimit?"); return TCL_ERROR; @@ -972,9 +1012,7 @@ Tcl_InterpObjCmd( return TCL_ERROR; } return SlaveRecursionLimit(interp, slaveInterp, objc - 3, objv + 3); - } case OPT_SLAVES: { - Tcl_Interp *slaveInterp; InterpInfo *iiPtr; Tcl_Obj *resultPtr; Tcl_HashEntry *hPtr; @@ -998,8 +1036,7 @@ Tcl_InterpObjCmd( } case OPT_TRANSFER: case OPT_SHARE: { - Tcl_Interp *slaveInterp; /* A slave. */ - Tcl_Interp *masterInterp; /* Its master. */ + Tcl_Interp *masterInterp; /* The master of the slave. */ Tcl_Channel chan; if (objc != 5) { @@ -1034,7 +1071,6 @@ Tcl_InterpObjCmd( return TCL_OK; } case OPT_TARGET: { - Tcl_Interp *slaveInterp; InterpInfo *iiPtr; Tcl_HashEntry *hPtr; Alias *aliasPtr; @@ -1055,18 +1091,20 @@ Tcl_InterpObjCmd( iiPtr = (InterpInfo *) ((Interp *) slaveInterp)->interpInfo; hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); if (hPtr == NULL) { - Tcl_AppendResult(interp, "alias \"", aliasName, "\" in path \"", - Tcl_GetString(objv[2]), "\" not found", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "alias \"%s\" in path \"%s\" not found", + aliasName, Tcl_GetString(objv[2]))); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS", aliasName, NULL); return TCL_ERROR; } aliasPtr = Tcl_GetHashValue(hPtr); if (Tcl_GetInterpPath(interp, aliasPtr->targetInterp) != TCL_OK) { - Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "target interpreter for alias \"", - aliasName, "\" in path \"", Tcl_GetString(objv[2]), - "\" is not my descendant", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "target interpreter for alias \"%s\" in path \"%s\" is " + "not my descendant", aliasName, Tcl_GetString(objv[2]))); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "TARGETSHROUDED", NULL); return TCL_ERROR; } return TCL_OK; @@ -1143,8 +1181,7 @@ Tcl_CreateAlias( int i; int result; - objv = (Tcl_Obj **) - TclStackAlloc(slaveInterp, (unsigned) sizeof(Tcl_Obj *) * argc); + objv = TclStackAlloc(slaveInterp, (unsigned) sizeof(Tcl_Obj *) * argc); for (i = 0; i < argc; i++) { objv[i] = Tcl_NewStringObj(argv[i], -1); Tcl_IncrRefCount(objv[i]); @@ -1245,7 +1282,8 @@ Tcl_GetAlias( hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); if (hPtr == NULL) { - Tcl_AppendResult(interp, "alias \"", aliasName, "\" not found", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "alias \"%s\" not found", aliasName)); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS", aliasName, NULL); return TCL_ERROR; } @@ -1264,7 +1302,7 @@ Tcl_GetAlias( } if (argvPtr != NULL) { *argvPtr = (const char **) - ckalloc((unsigned) sizeof(const char *) * (objc - 1)); + ckalloc(sizeof(const char *) * (objc - 1)); for (i = 1; i < objc; i++) { (*argvPtr)[i - 1] = TclGetString(objv[i]); } @@ -1306,7 +1344,8 @@ Tcl_GetAliasObj( hPtr = Tcl_FindHashEntry(&iiPtr->slave.aliasTable, aliasName); if (hPtr == NULL) { - Tcl_AppendResult(interp, "alias \"", aliasName, "\" not found", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "alias \"%s\" not found", aliasName)); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS", aliasName, NULL); return TCL_ERROR; } @@ -1394,9 +1433,9 @@ TclPreventAliasLoop( * [Bug #641195] */ - Tcl_AppendResult(interp, "cannot define or rename alias \"", - Tcl_GetCommandName(cmdInterp, cmd), - "\": interpreter deleted", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "cannot define or rename alias \"%s\": interpreter deleted", + Tcl_GetCommandName(cmdInterp, cmd))); return TCL_ERROR; } cmdNamePtr = nextAliasPtr->objPtr; @@ -1409,9 +1448,11 @@ TclPreventAliasLoop( } aliasCmdPtr = (Command *) aliasCmd; if (aliasCmdPtr == cmdPtr) { - Tcl_AppendResult(interp, "cannot define or rename alias \"", - Tcl_GetCommandName(cmdInterp, cmd), - "\": would create a loop", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "cannot define or rename alias \"%s\": would create a loop", + Tcl_GetCommandName(cmdInterp, cmd))); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "ALIASLOOP", NULL); return TCL_ERROR; } @@ -1467,8 +1508,7 @@ AliasCreate( Tcl_Obj **prefv; int isNew, i; - aliasPtr = (Alias *) ckalloc((unsigned) (sizeof(Alias) - + objc * sizeof(Tcl_Obj *))); + aliasPtr = ckalloc(sizeof(Alias) + objc * sizeof(Tcl_Obj *)); aliasPtr->token = namePtr; Tcl_IncrRefCount(aliasPtr->token); aliasPtr->targetInterp = masterInterp; @@ -1519,7 +1559,7 @@ AliasCreate( cmdPtr->deleteData = NULL; Tcl_DeleteCommandFromToken(slaveInterp, aliasPtr->slaveCmd); - ckfree((char *) aliasPtr); + ckfree(aliasPtr); /* * The result was already set by TclPreventAliasLoop. @@ -1576,11 +1616,11 @@ AliasCreate( * interp alias {} foo {} zop # Now recreate "foo"... */ - targetPtr = (Target *) ckalloc((unsigned) sizeof(Target)); + targetPtr = ckalloc(sizeof(Target)); targetPtr->slaveCmd = aliasPtr->slaveCmd; targetPtr->slaveInterp = slaveInterp; - masterPtr = &((InterpInfo *) ((Interp*) masterInterp)->interpInfo)->master; + masterPtr = &((InterpInfo*) ((Interp*) masterInterp)->interpInfo)->master; targetPtr->nextPtr = masterPtr->targetsPtr; targetPtr->prevPtr = NULL; if (masterPtr->targetsPtr != NULL) { @@ -1631,8 +1671,8 @@ AliasDelete( slavePtr = &((InterpInfo *) ((Interp *) slaveInterp)->interpInfo)->slave; hPtr = Tcl_FindHashEntry(&slavePtr->aliasTable, TclGetString(namePtr)); if (hPtr == NULL) { - Tcl_AppendResult(interp, "alias \"", TclGetString(namePtr), - "\" not found", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "alias \"%s\" not found", TclGetString(namePtr))); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "ALIAS", TclGetString(namePtr), NULL); return TCL_ERROR; @@ -1806,9 +1846,9 @@ AliasNRCmd( */ if (isRootEnsemble) { - TclNRDeferCallback(interp, TclClearRootEnsemble, NULL, NULL, NULL, NULL); + TclNRAddCallback(interp, TclClearRootEnsemble, NULL, NULL, NULL, NULL); } - iPtr->evalFlags |= TCL_EVAL_REDIRECT; + TclSkipTailcall(interp); return Tcl_NREvalObj(interp, listPtr, flags); } @@ -1839,7 +1879,7 @@ AliasObjCmd( if (cmdc <= ALIAS_CMDV_PREALLOC) { cmdv = cmdArr; } else { - cmdv = (Tcl_Obj **) TclStackAlloc(interp, cmdc*(int)sizeof(Tcl_Obj*)); + cmdv = TclStackAlloc(interp, cmdc * sizeof(Tcl_Obj *)); } prefv = &aliasPtr->objPtr; @@ -1963,8 +2003,8 @@ AliasObjCmdDeleteProc( targetPtr->nextPtr->prevPtr = targetPtr->prevPtr; } - ckfree((char *) targetPtr); - ckfree((char *) aliasPtr); + ckfree(targetPtr); + ckfree(aliasPtr); } /* @@ -2069,6 +2109,72 @@ Tcl_GetMaster( /* *---------------------------------------------------------------------- * + * TclSetSlaveCancelFlags -- + * + * This function marks all slave interpreters belonging to a given + * interpreter as being canceled or not canceled, depending on the + * provided flags. + * + * Results: + * None. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +void +TclSetSlaveCancelFlags( + Tcl_Interp *interp, /* Set cancel flags of this interpreter. */ + int flags, /* Collection of OR-ed bits that control + * the cancellation of the script. Only + * TCL_CANCEL_UNWIND is currently + * supported. */ + int force) /* Non-zero to ignore numLevels for the purpose + * of resetting the cancellation flags. */ +{ + Master *masterPtr; /* Master record of given interpreter. */ + Tcl_HashEntry *hPtr; /* Search element. */ + Tcl_HashSearch hashSearch; /* Search variable. */ + Slave *slavePtr; /* Slave record of interpreter. */ + Interp *iPtr; + + if (interp == NULL) { + return; + } + + flags &= (CANCELED | TCL_CANCEL_UNWIND); + + masterPtr = &((InterpInfo *) ((Interp *) interp)->interpInfo)->master; + + hPtr = Tcl_FirstHashEntry(&masterPtr->slaveTable, &hashSearch); + for ( ; hPtr != NULL; hPtr = Tcl_NextHashEntry(&hashSearch)) { + slavePtr = Tcl_GetHashValue(hPtr); + iPtr = (Interp *) slavePtr->slaveInterp; + + if (iPtr == NULL) { + continue; + } + + if (flags == 0) { + TclResetCancellation((Tcl_Interp *) iPtr, force); + } else { + TclSetCancelFlags(iPtr, flags); + } + + /* + * Now, recursively handle this for the slaves of this slave + * interpreter. + */ + + TclSetSlaveCancelFlags((Tcl_Interp *) iPtr, flags, force); + } +} + +/* + *---------------------------------------------------------------------- + * * Tcl_GetInterpPath -- * * Sets the result of the asking interpreter to a proper Tcl list @@ -2098,17 +2204,19 @@ Tcl_GetInterpPath( InterpInfo *iiPtr; if (targetInterp == askingInterp) { + Tcl_SetObjResult(askingInterp, Tcl_NewObj()); return TCL_OK; } if (targetInterp == NULL) { return TCL_ERROR; } iiPtr = (InterpInfo *) ((Interp *) targetInterp)->interpInfo; - if (Tcl_GetInterpPath(askingInterp, iiPtr->slave.masterInterp) != TCL_OK) { + if (Tcl_GetInterpPath(askingInterp, iiPtr->slave.masterInterp) != TCL_OK){ return TCL_ERROR; } - Tcl_AppendElement(askingInterp, Tcl_GetHashKey(&iiPtr->master.slaveTable, - iiPtr->slave.slaveEntryPtr)); + Tcl_ListObjAppendElement(NULL, Tcl_GetObjResult(askingInterp), + Tcl_NewStringObj(Tcl_GetHashKey(&iiPtr->master.slaveTable, + iiPtr->slave.slaveEntryPtr), -1)); return TCL_OK; } @@ -2162,8 +2270,8 @@ GetInterp( } } if (searchInterp == NULL) { - Tcl_AppendResult(interp, "could not find interpreter \"", - TclGetString(pathPtr), "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "could not find interpreter \"%s\"", TclGetString(pathPtr))); Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "INTERP", TclGetString(pathPtr), NULL); } @@ -2200,8 +2308,10 @@ SlaveBgerror( if (TCL_ERROR == TclListObjLength(NULL, objv[0], &length) || (length < 1)) { - Tcl_AppendResult(interp, "cmdPrefix must be list of length >= 1", - NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "cmdPrefix must be list of length >= 1", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BGERRORFORMAT", NULL); return TCL_ERROR; } TclSetBgErrorHandler(slaveInterp, objv[0]); @@ -2268,8 +2378,9 @@ SlaveCreate( hPtr = Tcl_CreateHashEntry(&masterInfoPtr->master.slaveTable, path, &isNew); if (isNew == 0) { - Tcl_AppendResult(interp, "interpreter named \"", path, - "\" already exists, cannot create", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "interpreter named \"%s\" already exists, cannot create", + path)); return NULL; } @@ -2278,8 +2389,8 @@ SlaveCreate( slavePtr->masterInterp = masterInterp; slavePtr->slaveEntryPtr = hPtr; slavePtr->slaveInterp = slaveInterp; - slavePtr->interpCmd = Tcl_CreateObjCommand(masterInterp, path, - SlaveObjCmd, slaveInterp, SlaveObjCmdDeleteProc); + slavePtr->interpCmd = Tcl_NRCreateCommand(masterInterp, path, + SlaveObjCmd, NRSlaveCmd, slaveInterp, SlaveObjCmdDeleteProc); Tcl_InitHashTable(&slavePtr->aliasTable, TCL_STRING_KEYS); Tcl_SetHashValue(hPtr, slavePtr); Tcl_SetVar(slaveInterp, "tcl_interactive", "0", TCL_GLOBAL_ONLY); @@ -2368,17 +2479,29 @@ SlaveObjCmd( int objc, /* Number of arguments. */ Tcl_Obj *const objv[]) /* Argument objects. */ { + return Tcl_NRCallObjProc(interp, NRSlaveCmd, clientData, objc, objv); +} + +static int +NRSlaveCmd( + ClientData clientData, /* Slave interpreter. */ + Tcl_Interp *interp, /* Current interpreter. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[]) /* Argument objects. */ +{ Tcl_Interp *slaveInterp = clientData; int index; static const char *const options[] = { - "alias", "aliases", "bgerror", "eval", - "expose", "hide", "hidden", "issafe", - "invokehidden", "limit", "marktrusted", "recursionlimit", NULL + "alias", "aliases", "bgerror", "debug", + "eval", "expose", "hide", "hidden", + "issafe", "invokehidden", "limit", "marktrusted", + "recursionlimit", NULL }; enum options { - OPT_ALIAS, OPT_ALIASES, OPT_BGERROR, OPT_EVAL, - OPT_EXPOSE, OPT_HIDE, OPT_HIDDEN, OPT_ISSAFE, - OPT_INVOKEHIDDEN, OPT_LIMIT, OPT_MARKTRUSTED, OPT_RECLIMIT + OPT_ALIAS, OPT_ALIASES, OPT_BGERROR, OPT_DEBUG, + OPT_EVAL, OPT_EXPOSE, OPT_HIDE, OPT_HIDDEN, + OPT_ISSAFE, OPT_INVOKEHIDDEN, OPT_LIMIT, OPT_MARKTRUSTED, + OPT_RECLIMIT }; if (slaveInterp == NULL) { @@ -2423,6 +2546,16 @@ SlaveObjCmd( return TCL_ERROR; } return SlaveBgerror(interp, slaveInterp, objc - 2, objv + 2); + case OPT_DEBUG: + /* + * TIP #378 + * Currently only -frame supported, otherwise ?-option ?value? ...? + */ + if (objc > 4) { + Tcl_WrongNumArgs(interp, 2, objv, "?-frame ?bool??"); + return TCL_ERROR; + } + return SlaveDebugCmd(interp, slaveInterp, objc - 2, objv + 2); case OPT_EVAL: if (objc < 3) { Tcl_WrongNumArgs(interp, 2, objv, "arg ?arg ...?"); @@ -2455,7 +2588,7 @@ SlaveObjCmd( Tcl_SetObjResult(interp, Tcl_NewBooleanObj(Tcl_IsSafe(slaveInterp))); return TCL_OK; case OPT_INVOKEHIDDEN: { - int i, index; + int i; const char *namespaceName; static const char *const hiddenOptions[] = { "-global", "-namespace", "--", NULL @@ -2586,6 +2719,77 @@ SlaveObjCmdDeleteProc( /* *---------------------------------------------------------------------- * + * SlaveDebugCmd -- TIP #378 + * + * Helper function to handle 'debug' command in a slave interpreter. + * + * Results: + * A standard Tcl result. + * + * Side effects: + * May modify INTERP_DEBUG_FRAME flag in the slave. + * + *---------------------------------------------------------------------- + */ + +static int +SlaveDebugCmd( + Tcl_Interp *interp, /* Interp for error return. */ + Tcl_Interp *slaveInterp, /* The slave interpreter in which command + * will be evaluated. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[]) /* Argument objects. */ +{ + static const char *const debugTypes[] = { + "-frame", NULL + }; + enum DebugTypes { + DEBUG_TYPE_FRAME + }; + int debugType; + Interp *iPtr; + Tcl_Obj *resultPtr; + + iPtr = (Interp *) slaveInterp; + if (objc == 0) { + resultPtr = Tcl_NewObj(); + Tcl_ListObjAppendElement(NULL, resultPtr, + Tcl_NewStringObj("-frame", -1)); + Tcl_ListObjAppendElement(NULL, resultPtr, + Tcl_NewBooleanObj(iPtr->flags & INTERP_DEBUG_FRAME)); + Tcl_SetObjResult(interp, resultPtr); + } else { + if (Tcl_GetIndexFromObj(interp, objv[0], debugTypes, "debug option", + 0, &debugType) != TCL_OK) { + return TCL_ERROR; + } + if (debugType == DEBUG_TYPE_FRAME) { + if (objc == 2) { /* set */ + if (Tcl_GetBooleanFromObj(interp, objv[1], &debugType) + != TCL_OK) { + return TCL_ERROR; + } + + /* + * Quietly ignore attempts to disable interp debugging. This + * is a one-way switch as frame debug info is maintained in a + * stack that must be consistent once turned on. + */ + + if (debugType) { + iPtr->flags |= INTERP_DEBUG_FRAME; + } + } + Tcl_SetObjResult(interp, + Tcl_NewBooleanObj(iPtr->flags & INTERP_DEBUG_FRAME)); + } + } + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * * SlaveEval -- * * Helper function to evaluate a command in a slave interpreter. @@ -2609,6 +2813,16 @@ SlaveEval( { int result; + /* + * TIP #285: If necessary, reset the cancellation flags for the slave + * interpreter now; otherwise, canceling a script in a master interpreter + * can result in a situation where a slave interpreter can no longer + * evaluate any scripts unless somebody calls the TclResetCancellation + * function for that particular Tcl_Interp. + */ + + TclSetSlaveCancelFlags(slaveInterp, 0, 0); + Tcl_Preserve(slaveInterp); Tcl_AllowExceptions(slaveInterp); @@ -2666,6 +2880,8 @@ SlaveExpose( Tcl_SetObjResult(interp, Tcl_NewStringObj( "permission denied: safe interpreter cannot expose commands", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE", + NULL); return TCL_ERROR; } @@ -2707,8 +2923,10 @@ SlaveRecursionLimit( if (objc) { if (Tcl_IsSafe(interp)) { - Tcl_AppendResult(interp, "permission denied: " - "safe interpreters cannot change recursion limit", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj("permission denied: " + "safe interpreters cannot change recursion limit", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE", + NULL); return TCL_ERROR; } if (TclGetIntFromObj(interp, objv[0], &limit) == TCL_ERROR) { @@ -2717,6 +2935,8 @@ SlaveRecursionLimit( if (limit <= 0) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "recursion limit must be > 0", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "BADLIMIT", + NULL); return TCL_ERROR; } Tcl_SetRecursionLimit(slaveInterp, limit); @@ -2724,6 +2944,7 @@ SlaveRecursionLimit( if (interp == slaveInterp && iPtr->numLevels > limit) { Tcl_SetObjResult(interp, Tcl_NewStringObj( "falling back due to new recursion limit", -1)); + Tcl_SetErrorCode(interp, "TCL", "RECURSION", NULL); return TCL_ERROR; } Tcl_SetObjResult(interp, objv[0]); @@ -2765,6 +2986,8 @@ SlaveHide( Tcl_SetObjResult(interp, Tcl_NewStringObj( "permission denied: safe interpreter cannot hide commands", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE", + NULL); return TCL_ERROR; } @@ -2847,6 +3070,8 @@ SlaveInvokeHidden( Tcl_SetObjResult(interp, Tcl_NewStringObj( "not allowed to invoke hidden commands from safe interpreter", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE", + NULL); return TCL_ERROR; } @@ -2854,7 +3079,11 @@ SlaveInvokeHidden( Tcl_AllowExceptions(slaveInterp); if (namespaceName == NULL) { - result = TclObjInvoke(slaveInterp, objc, objv, TCL_INVOKE_HIDDEN); + NRE_callback *rootPtr = TOP_CB(slaveInterp); + + Tcl_NRAddCallback(interp, NRPostInvokeHidden, slaveInterp, + rootPtr, NULL, NULL); + return TclNRInvoke(NULL, slaveInterp, objc, objv); } else { Namespace *nsPtr, *dummy1, *dummy2; const char *tail; @@ -2873,6 +3102,23 @@ SlaveInvokeHidden( Tcl_Release(slaveInterp); return result; } + +static int +NRPostInvokeHidden( + ClientData data[], + Tcl_Interp *interp, + int result) +{ + Tcl_Interp *slaveInterp = (Tcl_Interp *)data[0]; + NRE_callback *rootPtr = (NRE_callback *)data[1]; + + if (interp != slaveInterp) { + result = TclNRRunCallbacks(slaveInterp, result, rootPtr); + Tcl_TransferResult(slaveInterp, result, interp); + } + Tcl_Release(slaveInterp); + return result; +} /* *---------------------------------------------------------------------- @@ -2901,6 +3147,8 @@ SlaveMarkTrusted( Tcl_SetObjResult(interp, Tcl_NewStringObj( "permission denied: safe interpreter cannot mark trusted", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "UNSAFE", + NULL); return TCL_ERROR; } ((Interp *) slaveInterp)->flags &= ~SAFE_INTERP; @@ -3156,8 +3404,9 @@ Tcl_LimitCheck( if (iPtr->limit.cmdCount >= iPtr->cmdCount) { iPtr->limit.exceeded &= ~TCL_LIMIT_COMMANDS; } else if (iPtr->limit.exceeded & TCL_LIMIT_COMMANDS) { - Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "command count limit exceeded", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "command count limit exceeded", -1)); + Tcl_SetErrorCode(interp, "TCL", "LIMIT", "COMMANDS", NULL); Tcl_Release(interp); return TCL_ERROR; } @@ -3181,8 +3430,9 @@ Tcl_LimitCheck( iPtr->limit.time.usec >= now.usec)) { iPtr->limit.exceeded &= ~TCL_LIMIT_TIME; } else if (iPtr->limit.exceeded & TCL_LIMIT_TIME) { - Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "time limit exceeded", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "time limit exceeded", -1)); + Tcl_SetErrorCode(interp, "TCL", "LIMIT", "TIME", NULL); Tcl_Release(interp); return TCL_ERROR; } @@ -3258,7 +3508,7 @@ RunLimitHandlers( if (handlerPtr->deleteProc != NULL) { handlerPtr->deleteProc(handlerPtr->clientData); } - ckfree((char *) handlerPtr); + ckfree(handlerPtr); } } } @@ -3305,7 +3555,7 @@ Tcl_LimitAddHandler( * Allocate a handler record. */ - handlerPtr = (LimitHandler *) ckalloc(sizeof(LimitHandler)); + handlerPtr = ckalloc(sizeof(LimitHandler)); handlerPtr->flags = 0; handlerPtr->handlerProc = handlerProc; handlerPtr->clientData = clientData; @@ -3424,7 +3674,7 @@ Tcl_LimitRemoveHandler( if (handlerPtr->deleteProc != NULL) { handlerPtr->deleteProc(handlerPtr->clientData); } - ckfree((char *) handlerPtr); + ckfree(handlerPtr); } return; } @@ -3484,7 +3734,7 @@ TclLimitRemoveAllHandlers( if (handlerPtr->deleteProc != NULL) { handlerPtr->deleteProc(handlerPtr->clientData); } - ckfree((char *) handlerPtr); + ckfree(handlerPtr); } } @@ -3517,7 +3767,7 @@ TclLimitRemoveAllHandlers( if (handlerPtr->deleteProc != NULL) { handlerPtr->deleteProc(handlerPtr->clientData); } - ckfree((char *) handlerPtr); + ckfree(handlerPtr); } } @@ -3912,7 +4162,7 @@ DeleteScriptLimitCallback( if (limitCBPtr->entryPtr != NULL) { Tcl_DeleteHashEntry(limitCBPtr->entryPtr); } - ckfree((char *) limitCBPtr); + ckfree(limitCBPtr); } /* @@ -4003,7 +4253,7 @@ SetScriptLimitCallback( return; } - hashPtr = Tcl_CreateHashEntry(&iPtr->limit.callbacks, (char *) &key, + hashPtr = Tcl_CreateHashEntry(&iPtr->limit.callbacks, &key, &isNew); if (!isNew) { limitCBPtr = Tcl_GetHashValue(hashPtr); @@ -4012,7 +4262,7 @@ SetScriptLimitCallback( limitCBPtr); } - limitCBPtr = (ScriptLimitCallback *) ckalloc(sizeof(ScriptLimitCallback)); + limitCBPtr = ckalloc(sizeof(ScriptLimitCallback)); limitCBPtr->interp = interp; limitCBPtr->scriptObj = scriptObj; limitCBPtr->entryPtr = hashPtr; @@ -4179,6 +4429,20 @@ SlaveCommandLimitCmd( ScriptLimitCallback *limitCBPtr; Tcl_HashEntry *hPtr; + /* + * First, ensure that we are not reading or writing the calling + * interpreter's limits; it may only manipulate its children. Note that + * the low level API enforces this with Tcl_Panic, which we want to + * avoid. [Bug 3398794] + */ + + if (interp == slaveInterp) { + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "limits on current interpreter inaccessible", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "SELF", NULL); + return TCL_ERROR; + } + if (objc == consumedObjc) { Tcl_Obj *dictPtr; @@ -4248,8 +4512,7 @@ SlaveCommandLimitCmd( } return TCL_OK; } else if ((objc-consumedObjc) & 1 /* isOdd(objc-consumedObjc) */) { - Tcl_WrongNumArgs(interp, consumedObjc, objv, - "?-option value ...?"); + Tcl_WrongNumArgs(interp, consumedObjc, objv, "?-option value ...?"); return TCL_ERROR; } else { int i, scriptLen = 0, limitLen = 0; @@ -4272,8 +4535,10 @@ SlaveCommandLimitCmd( return TCL_ERROR; } if (gran < 1) { - Tcl_AppendResult(interp, "granularity must be at " - "least 1", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "granularity must be at least 1", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BADVALUE", NULL); return TCL_ERROR; } break; @@ -4287,8 +4552,10 @@ SlaveCommandLimitCmd( return TCL_ERROR; } if (limit < 0) { - Tcl_AppendResult(interp, "command limit value must be at " - "least 0", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "command limit value must be at least 0", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BADVALUE", NULL); return TCL_ERROR; } break; @@ -4350,6 +4617,20 @@ SlaveTimeLimitCmd( ScriptLimitCallback *limitCBPtr; Tcl_HashEntry *hPtr; + /* + * First, ensure that we are not reading or writing the calling + * interpreter's limits; it may only manipulate its children. Note that + * the low level API enforces this with Tcl_Panic, which we want to + * avoid. [Bug 3398794] + */ + + if (interp == slaveInterp) { + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "limits on current interpreter inaccessible", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", "SELF", NULL); + return TCL_ERROR; + } + if (objc == consumedObjc) { Tcl_Obj *dictPtr; @@ -4436,8 +4717,7 @@ SlaveTimeLimitCmd( } return TCL_OK; } else if ((objc-consumedObjc) & 1 /* isOdd(objc-consumedObjc) */) { - Tcl_WrongNumArgs(interp, consumedObjc, objv, - "?-option value ...?"); + Tcl_WrongNumArgs(interp, consumedObjc, objv, "?-option value ...?"); return TCL_ERROR; } else { int i, scriptLen = 0, milliLen = 0, secLen = 0; @@ -4464,8 +4744,10 @@ SlaveTimeLimitCmd( return TCL_ERROR; } if (gran < 1) { - Tcl_AppendResult(interp, "granularity must be at " - "least 1", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "granularity must be at least 1", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BADVALUE", NULL); return TCL_ERROR; } break; @@ -4479,11 +4761,13 @@ SlaveTimeLimitCmd( return TCL_ERROR; } if (tmp < 0) { - Tcl_AppendResult(interp, "milliseconds must be at least 0", - NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "milliseconds must be at least 0", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BADVALUE", NULL); return TCL_ERROR; } - limitMoment.usec = ((long)tmp)*1000; + limitMoment.usec = ((long) tmp)*1000; break; case OPT_SEC: secObj = objv[i+1]; @@ -4495,8 +4779,10 @@ SlaveTimeLimitCmd( return TCL_ERROR; } if (tmp < 0) { - Tcl_AppendResult(interp, "seconds must be at least 0", - NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "seconds must be at least 0", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BADVALUE", NULL); return TCL_ERROR; } limitMoment.sec = tmp; @@ -4511,13 +4797,19 @@ SlaveTimeLimitCmd( */ if (secObj != NULL && secLen == 0 && milliLen > 0) { - Tcl_AppendResult(interp, "may only set -milliseconds " - "if -seconds is not also being reset", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "may only set -milliseconds if -seconds is not " + "also being reset", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BADUSAGE", NULL); return TCL_ERROR; } if (milliLen == 0 && (secObj == NULL || secLen > 0)) { - Tcl_AppendResult(interp, "may only reset -milliseconds " - "if -seconds is also being reset", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "may only reset -milliseconds if -seconds is " + "also being reset", -1)); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "INTERP", + "BADUSAGE", NULL); return TCL_ERROR; } } |