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-rw-r--r--tcl8.6/unix/dltest/pkgua.c341
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diff --git a/tcl8.6/unix/dltest/pkgua.c b/tcl8.6/unix/dltest/pkgua.c
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--- a/tcl8.6/unix/dltest/pkgua.c
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-/*
- * 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);
-}
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