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Diffstat (limited to 'tcl8.6/unix/dltest/pkgua.c')
-rw-r--r-- | tcl8.6/unix/dltest/pkgua.c | 341 |
1 files changed, 0 insertions, 341 deletions
diff --git a/tcl8.6/unix/dltest/pkgua.c b/tcl8.6/unix/dltest/pkgua.c deleted file mode 100644 index 417bedb..0000000 --- a/tcl8.6/unix/dltest/pkgua.c +++ /dev/null @@ -1,341 +0,0 @@ -/* - * 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" - -/* - * TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the - * Pkgua_Init declaration is in the source file itself, which is only - * accessed when we are building a library. - */ -#undef TCL_STORAGE_CLASS -#define TCL_STORAGE_CLASS DLLEXPORT - -/* - * 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[]); - -/* - * 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. - * - * Note that this code is utterly single-threaded. - */ - -static Tcl_HashTable interpTokenMap; -static int interpTokenMapInitialised = 0; -#define MAX_REGISTERED_COMMANDS 2 - - -static void -PkguaInitTokensHashTable(void) -{ - if (interpTokenMapInitialised) { - return; - } - Tcl_InitHashTable(&interpTokenMap, TCL_ONE_WORD_KEYS); - interpTokenMapInitialised = 1; -} - -static void -PkguaFreeTokensHashTable(void) -{ - Tcl_HashSearch search; - Tcl_HashEntry *entryPtr; - - for (entryPtr = Tcl_FirstHashEntry(&interpTokenMap, &search); - entryPtr != NULL; entryPtr = Tcl_NextHashEntry(&search)) { - Tcl_Free((char *) Tcl_GetHashValue(entryPtr)); - } - interpTokenMapInitialised = 0; -} - -static Tcl_Command * -PkguaInterpToTokens( - Tcl_Interp *interp) -{ - int newEntry; - Tcl_Command *cmdTokens; - Tcl_HashEntry *entryPtr = - Tcl_CreateHashEntry(&interpTokenMap, (char *) interp, &newEntry); - - if (newEntry) { - cmdTokens = (Tcl_Command *) - Tcl_Alloc(sizeof(Tcl_Command) * (MAX_REGISTERED_COMMANDS+1)); - for (newEntry=0 ; newEntry<MAX_REGISTERED_COMMANDS+1 ; ++newEntry) { - cmdTokens[newEntry] = NULL; - } - Tcl_SetHashValue(entryPtr, cmdTokens); - } else { - cmdTokens = (Tcl_Command *) Tcl_GetHashValue(entryPtr); - } - return cmdTokens; -} - -static void -PkguaDeleteTokens( - Tcl_Interp *interp) -{ - Tcl_HashEntry *entryPtr = - Tcl_FindHashEntry(&interpTokenMap, (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; - - 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. */ -{ - 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. - * - *---------------------------------------------------------------------- - */ - -EXTERN int -Pkgua_Init( - Tcl_Interp *interp) /* Interpreter in which the package is to be - * made available. */ -{ - int code, cmdIndex = 0; - Tcl_Command *cmdTokens; - - if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) { - return TCL_ERROR; - } - - /* - * Initialise 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_SetVar(interp, "::pkgua_loaded", ".", TCL_APPEND_VALUE); - - cmdTokens = PkguaInterpToTokens(interp); - cmdTokens[cmdIndex++] = - Tcl_CreateObjCommand(interp, "pkgua_eq", PkguaEqObjCmd, NULL, - NULL); - cmdTokens[cmdIndex++] = - Tcl_CreateObjCommand(interp, "pkgua_quote", PkguaQuoteObjCmd, - NULL, NULL); - 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. - * - *---------------------------------------------------------------------- - */ - -EXTERN 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. - * - *---------------------------------------------------------------------- - */ - -EXTERN 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<MAX_REGISTERED_COMMANDS ; cmdIndex++) { - if (cmdTokens[cmdIndex] == NULL) { - continue; - } - code = Tcl_DeleteCommandFromToken(interp, cmdTokens[cmdIndex]); - if (code != TCL_OK) { - return code; - } - } - - PkguaDeleteTokens(interp); - - Tcl_SetVar(interp, "::pkgua_detached", ".", TCL_APPEND_VALUE); - - if (flags == TCL_UNLOAD_DETACH_FROM_PROCESS) { - /* - * Tcl is ready to detach this library from the running application. - * We should free all the memory that is not related to any - * interpreter. - */ - - PkguaFreeTokensHashTable(); - Tcl_SetVar(interp, "::pkgua_unloaded", ".", TCL_APPEND_VALUE); - } - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * Pkgua_SafeUnload -- - * - * 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. - * - *---------------------------------------------------------------------- - */ - -EXTERN int -Pkgua_SafeUnload( - Tcl_Interp *interp, /* Interpreter from which the package is to be - * unloaded. */ - int flags) /* Flags passed by the unloading mechanism */ -{ - return Pkgua_Unload(interp, flags); -} |