X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=util%2Fsrc%2FTclTk%2Ftcl8.6.12%2Funix%2Fdltest%2Fpkgua.c;fp=util%2Fsrc%2FTclTk%2Ftcl8.6.12%2Funix%2Fdltest%2Fpkgua.c;h=ad2b2b3088a54ecdd8725a20ec577ba099723cd2;hb=a5fac4c3be12f7d1c3c220e0c26890b05f28d35f;hp=0000000000000000000000000000000000000000;hpb=c07e8e55373b9730110d8e425119f05a1cd93e52;p=eos%2Fbase.git diff --git a/util/src/TclTk/tcl8.6.12/unix/dltest/pkgua.c b/util/src/TclTk/tcl8.6.12/unix/dltest/pkgua.c new file mode 100644 index 0000000000..ad2b2b3088 --- /dev/null +++ b/util/src/TclTk/tcl8.6.12/unix/dltest/pkgua.c @@ -0,0 +1,349 @@ +/* + * pkgua.c -- + * + * This file contains a simple Tcl package "pkgua" that is intended for + * testing the Tcl dynamic unloading facilities. + * + * Copyright (c) 1995 Sun Microsystems, Inc. + * Copyright (c) 2004 Georgios Petasis + * + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. + */ + +#undef STATIC_BUILD +#include "tcl.h" + +/* + * Prototypes for procedures defined later in this file: + */ + +static int PkguaEqObjCmd(ClientData clientData, + Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); +static int PkguaQuoteObjCmd(ClientData clientData, + Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); +static void CommandDeleted(ClientData clientData); + +/* + * In the following hash table we are going to store a struct that holds all + * the command tokens created by Tcl_CreateObjCommand in an interpreter, + * indexed by the interpreter. In this way, we can find which command tokens + * we have registered in a specific interpreter, in order to unload them. We + * need to keep the various command tokens we have registered, as they are the + * only safe way to unregister our registered commands, even if they have been + * renamed. + */ + +typedef struct ThreadSpecificData { + int interpTokenMapInitialised; + Tcl_HashTable interpTokenMap; +} ThreadSpecificData; +static Tcl_ThreadDataKey dataKey; +#define MAX_REGISTERED_COMMANDS 2 + +static void +CommandDeleted(ClientData clientData) +{ + Tcl_Command *cmdToken = (Tcl_Command *)clientData; + *cmdToken = NULL; +} + +static void +PkguaInitTokensHashTable(void) +{ + ThreadSpecificData *tsdPtr = (ThreadSpecificData *)Tcl_GetThreadData((&dataKey), sizeof(ThreadSpecificData)); + + if (tsdPtr->interpTokenMapInitialised) { + return; + } + Tcl_InitHashTable(&tsdPtr->interpTokenMap, TCL_ONE_WORD_KEYS); + tsdPtr->interpTokenMapInitialised = 1; +} + +static void +PkguaFreeTokensHashTable(void) +{ + Tcl_HashSearch search; + Tcl_HashEntry *entryPtr; + ThreadSpecificData *tsdPtr = (ThreadSpecificData *)Tcl_GetThreadData((&dataKey), sizeof(ThreadSpecificData)); + + for (entryPtr = Tcl_FirstHashEntry(&tsdPtr->interpTokenMap, &search); + entryPtr != NULL; entryPtr = Tcl_NextHashEntry(&search)) { + Tcl_Free((char *) Tcl_GetHashValue(entryPtr)); + } + tsdPtr->interpTokenMapInitialised = 0; +} + +static Tcl_Command * +PkguaInterpToTokens( + Tcl_Interp *interp) +{ + int newEntry; + Tcl_Command *cmdTokens; + ThreadSpecificData *tsdPtr = (ThreadSpecificData *)Tcl_GetThreadData((&dataKey), sizeof(ThreadSpecificData)); + Tcl_HashEntry *entryPtr = + Tcl_CreateHashEntry(&tsdPtr->interpTokenMap, (char *) interp, &newEntry); + + if (newEntry) { + cmdTokens = (Tcl_Command *) + Tcl_Alloc(sizeof(Tcl_Command) * (MAX_REGISTERED_COMMANDS)); + for (newEntry=0 ; newEntryinterpTokenMap, (char *) interp); + + if (entryPtr) { + Tcl_Free((char *) Tcl_GetHashValue(entryPtr)); + Tcl_DeleteHashEntry(entryPtr); + } +} + +/* + *---------------------------------------------------------------------- + * + * PkguaEqObjCmd -- + * + * This procedure is invoked to process the "pkgua_eq" Tcl command. It + * expects two arguments and returns 1 if they are the same, 0 if they + * are different. + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + +static int +PkguaEqObjCmd( + ClientData dummy, /* Not used. */ + Tcl_Interp *interp, /* Current interpreter. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[]) /* Argument objects. */ +{ + int result; + const char *str1, *str2; + int len1, len2; + (void)dummy; + + if (objc != 3) { + Tcl_WrongNumArgs(interp, 1, objv, "string1 string2"); + return TCL_ERROR; + } + + str1 = Tcl_GetStringFromObj(objv[1], &len1); + str2 = Tcl_GetStringFromObj(objv[2], &len2); + if (len1 == len2) { + result = (Tcl_UtfNcmp(str1, str2, len1) == 0); + } else { + result = 0; + } + Tcl_SetObjResult(interp, Tcl_NewIntObj(result)); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * PkguaQuoteObjCmd -- + * + * This procedure is invoked to process the "pkgua_quote" Tcl command. It + * expects one argument, which it returns as result. + * + * Results: + * A standard Tcl result. + * + * Side effects: + * See the user documentation. + * + *---------------------------------------------------------------------- + */ + +static int +PkguaQuoteObjCmd( + ClientData dummy, /* Not used. */ + Tcl_Interp *interp, /* Current interpreter. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[]) /* Argument strings. */ +{ + (void)dummy; + + if (objc != 2) { + Tcl_WrongNumArgs(interp, 1, objv, "value"); + return TCL_ERROR; + } + Tcl_SetObjResult(interp, objv[1]); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Pkgua_Init -- + * + * This is a package initialization procedure, which is called by Tcl + * when this package is to be added to an interpreter. + * + * Results: + * None. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +DLLEXPORT int +Pkgua_Init( + Tcl_Interp *interp) /* Interpreter in which the package is to be + * made available. */ +{ + int code; + Tcl_Command *cmdTokens; + + if (Tcl_InitStubs(interp, "8.5", 0) == NULL) { + return TCL_ERROR; + } + + /* + * Initialize our Hash table, where we store the registered command tokens + * for each interpreter. + */ + + PkguaInitTokensHashTable(); + + code = Tcl_PkgProvide(interp, "pkgua", "1.0"); + if (code != TCL_OK) { + return code; + } + + Tcl_SetVar2(interp, "::pkgua_loaded", NULL, ".", TCL_APPEND_VALUE); + + cmdTokens = PkguaInterpToTokens(interp); + cmdTokens[0] = + Tcl_CreateObjCommand(interp, "pkgua_eq", PkguaEqObjCmd, &cmdTokens[0], + CommandDeleted); + cmdTokens[1] = + Tcl_CreateObjCommand(interp, "pkgua_quote", PkguaQuoteObjCmd, + &cmdTokens[1], CommandDeleted); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Pkgua_SafeInit -- + * + * This is a package initialization procedure, which is called by Tcl + * when this package is to be added to a safe interpreter. + * + * Results: + * None. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +DLLEXPORT int +Pkgua_SafeInit( + Tcl_Interp *interp) /* Interpreter in which the package is to be + * made available. */ +{ + return Pkgua_Init(interp); +} + +/* + *---------------------------------------------------------------------- + * + * Pkgua_Unload -- + * + * This is a package unloading initialization procedure, which is called + * by Tcl when this package is to be unloaded from an interpreter. + * + * Results: + * None. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +DLLEXPORT int +Pkgua_Unload( + Tcl_Interp *interp, /* Interpreter from which the package is to be + * unloaded. */ + int flags) /* Flags passed by the unloading mechanism */ +{ + int code, cmdIndex; + Tcl_Command *cmdTokens = PkguaInterpToTokens(interp); + + for (cmdIndex=0 ; cmdIndex