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authorJoe Mistachkin <joe@mistachkin.com>2003-05-10 02:52:54 (GMT)
committerJoe Mistachkin <joe@mistachkin.com>2003-05-10 02:52:54 (GMT)
commitec1796ef6f61486913d955f2f6a78c340c549d7d (patch)
tree1a931922aaf63c20b5818183128448ac5977642c
parentf53e35b0f41950bc4f9bc2279637669b868d0a30 (diff)
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fix for [Bugs 733221, 733156]
-rw-r--r--win/tclAppInit.c849
1 files changed, 449 insertions, 400 deletions
diff --git a/win/tclAppInit.c b/win/tclAppInit.c
index 864f59a..38fd50d 100644
--- a/win/tclAppInit.c
+++ b/win/tclAppInit.c
@@ -1,400 +1,449 @@
-/*
- * tclAppInit.c --
- *
- * Provides a default version of the main program and Tcl_AppInit
- * procedure for Tcl applications (without Tk). Note that this
- * program must be built in Win32 console mode to work properly.
- *
- * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
- * Copyright (c) 1998-1999 by Scriptics Corporation.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tclAppInit.c,v 1.11 2002/12/04 03:59:17 davygrvy Exp $
- */
-
-#include "tcl.h"
-#include <windows.h>
-#include <locale.h>
-
-#ifdef TCL_TEST
-extern int Procbodytest_Init _ANSI_ARGS_((Tcl_Interp *interp));
-extern int Procbodytest_SafeInit _ANSI_ARGS_((Tcl_Interp *interp));
-extern int Tcltest_Init _ANSI_ARGS_((Tcl_Interp *interp));
-extern int TclObjTest_Init _ANSI_ARGS_((Tcl_Interp *interp));
-#ifdef TCL_THREADS
-extern int TclThread_Init _ANSI_ARGS_((Tcl_Interp *interp));
-#endif
-#endif /* TCL_TEST */
-
-static void setargv _ANSI_ARGS_((int *argcPtr, char ***argvPtr));
-static BOOL __stdcall sigHandler (DWORD fdwCtrlType);
-static Tcl_AsyncProc asyncExit;
-
-Tcl_AsyncHandler exitToken;
-DWORD exitErrorCode;
-
-
-/*
- *----------------------------------------------------------------------
- *
- * main --
- *
- * This is the main program for the application.
- *
- * Results:
- * None: Tcl_Main never returns here, so this procedure never
- * returns either.
- *
- * Side effects:
- * Whatever the application does.
- *
- *----------------------------------------------------------------------
- */
-
-int
-main(argc, argv)
- int argc; /* Number of command-line arguments. */
- char **argv; /* Values of command-line arguments. */
-{
- /*
- * The following #if block allows you to change the AppInit
- * function by using a #define of TCL_LOCAL_APPINIT instead
- * of rewriting this entire file. The #if checks for that
- * #define and uses Tcl_AppInit if it doesn't exist.
- */
-
-#ifndef TCL_LOCAL_APPINIT
-#define TCL_LOCAL_APPINIT Tcl_AppInit
-#endif
- extern int TCL_LOCAL_APPINIT _ANSI_ARGS_((Tcl_Interp *interp));
-
- /*
- * The following #if block allows you to change how Tcl finds the startup
- * script, prime the library or encoding paths, fiddle with the argv,
- * etc., without needing to rewrite Tcl_Main()
- */
-
-#ifdef TCL_LOCAL_MAIN_HOOK
- extern int TCL_LOCAL_MAIN_HOOK _ANSI_ARGS_((int *argc, char ***argv));
-#endif
-
- char buffer[MAX_PATH +1];
- char *p;
- /*
- * Set up the default locale to be standard "C" locale so parsing
- * is performed correctly.
- */
-
- setlocale(LC_ALL, "C");
- setargv(&argc, &argv);
-
- /*
- * Replace argv[0] with full pathname of executable, and forward
- * slashes substituted for backslashes.
- */
-
- GetModuleFileName(NULL, buffer, sizeof(buffer));
- argv[0] = buffer;
- for (p = buffer; *p != '\0'; p++) {
- if (*p == '\\') {
- *p = '/';
- }
- }
-
-#ifdef TCL_LOCAL_MAIN_HOOK
- TCL_LOCAL_MAIN_HOOK(&argc, &argv);
-#endif
-
- Tcl_Main(argc, argv, TCL_LOCAL_APPINIT);
-
- return 0; /* Needed only to prevent compiler warning. */
-}
-
-
-/*
- *----------------------------------------------------------------------
- *
- * Tcl_AppInit --
- *
- * This procedure performs application-specific initialization.
- * Most applications, especially those that incorporate additional
- * packages, will have their own version of this procedure.
- *
- * Results:
- * Returns a standard Tcl completion code, and leaves an error
- * message in the interp's result if an error occurs.
- *
- * Side effects:
- * Depends on the startup script.
- *
- *----------------------------------------------------------------------
- */
-
-int
-Tcl_AppInit(interp)
- Tcl_Interp *interp; /* Interpreter for application. */
-{
- if (Tcl_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
-
- /*
- * Install a signal handler to the win32 console tclsh is running in.
- */
- SetConsoleCtrlHandler(sigHandler, TRUE);
- exitToken = Tcl_AsyncCreate(asyncExit, NULL);
-
-#ifdef TCL_TEST
- if (Tcltest_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
- Tcl_StaticPackage(interp, "Tcltest", Tcltest_Init,
- (Tcl_PackageInitProc *) NULL);
- if (TclObjTest_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
-#ifdef TCL_THREADS
- if (TclThread_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
-#endif
- if (Procbodytest_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
- Tcl_StaticPackage(interp, "procbodytest", Procbodytest_Init,
- Procbodytest_SafeInit);
-#endif /* TCL_TEST */
-
-#if defined(STATIC_BUILD) && defined(TCL_USE_STATIC_PACKAGES)
- {
- extern Tcl_PackageInitProc Registry_Init;
- extern Tcl_PackageInitProc Dde_Init;
-
- if (Registry_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
- Tcl_StaticPackage(interp, "registry", Registry_Init, NULL);
-
- if (Dde_Init(interp) == TCL_ERROR) {
- return TCL_ERROR;
- }
- Tcl_StaticPackage(interp, "dde", Dde_Init, NULL);
- }
-#endif
-
- /*
- * Call the init procedures for included packages. Each call should
- * look like this:
- *
- * if (Mod_Init(interp) == TCL_ERROR) {
- * return TCL_ERROR;
- * }
- *
- * where "Mod" is the name of the module.
- */
-
- /*
- * Call Tcl_CreateCommand for application-specific commands, if
- * they weren't already created by the init procedures called above.
- */
-
- /*
- * Specify a user-specific startup file to invoke if the application
- * is run interactively. Typically the startup file is "~/.apprc"
- * where "app" is the name of the application. If this line is deleted
- * then no user-specific startup file will be run under any conditions.
- */
-
- Tcl_SetVar(interp, "tcl_rcFileName", "~/tclshrc.tcl", TCL_GLOBAL_ONLY);
- return TCL_OK;
-}
-
-/*
- *-------------------------------------------------------------------------
- *
- * setargv --
- *
- * Parse the Windows command line string into argc/argv. Done here
- * because we don't trust the builtin argument parser in crt0.
- * Windows applications are responsible for breaking their command
- * line into arguments.
- *
- * 2N backslashes + quote -> N backslashes + begin quoted string
- * 2N + 1 backslashes + quote -> literal
- * N backslashes + non-quote -> literal
- * quote + quote in a quoted string -> single quote
- * quote + quote not in quoted string -> empty string
- * quote -> begin quoted string
- *
- * Results:
- * Fills argcPtr with the number of arguments and argvPtr with the
- * array of arguments.
- *
- * Side effects:
- * Memory allocated.
- *
- *--------------------------------------------------------------------------
- */
-
-static void
-setargv(argcPtr, argvPtr)
- int *argcPtr; /* Filled with number of argument strings. */
- char ***argvPtr; /* Filled with argument strings (malloc'd). */
-{
- char *cmdLine, *p, *arg, *argSpace;
- char **argv;
- int argc, size, inquote, copy, slashes;
-
- cmdLine = GetCommandLine(); /* INTL: BUG */
-
- /*
- * Precompute an overly pessimistic guess at the number of arguments
- * in the command line by counting non-space spans.
- */
-
- size = 2;
- for (p = cmdLine; *p != '\0'; p++) {
- if ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
- size++;
- while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
- p++;
- }
- if (*p == '\0') {
- break;
- }
- }
- }
- argSpace = (char *) Tcl_Alloc(
- (unsigned) (size * sizeof(char *) + strlen(cmdLine) + 1));
- argv = (char **) argSpace;
- argSpace += size * sizeof(char *);
- size--;
-
- p = cmdLine;
- for (argc = 0; argc < size; argc++) {
- argv[argc] = arg = argSpace;
- while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
- p++;
- }
- if (*p == '\0') {
- break;
- }
-
- inquote = 0;
- slashes = 0;
- while (1) {
- copy = 1;
- while (*p == '\\') {
- slashes++;
- p++;
- }
- if (*p == '"') {
- if ((slashes & 1) == 0) {
- copy = 0;
- if ((inquote) && (p[1] == '"')) {
- p++;
- copy = 1;
- } else {
- inquote = !inquote;
- }
- }
- slashes >>= 1;
- }
-
- while (slashes) {
- *arg = '\\';
- arg++;
- slashes--;
- }
-
- if ((*p == '\0')
- || (!inquote && ((*p == ' ') || (*p == '\t')))) { /* INTL: ISO space. */
- break;
- }
- if (copy != 0) {
- *arg = *p;
- arg++;
- }
- p++;
- }
- *arg = '\0';
- argSpace = arg + 1;
- }
- argv[argc] = NULL;
-
- *argcPtr = argc;
- *argvPtr = argv;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * asyncExit --
- *
- * The AsyncProc for the exitToken.
- *
- * Results:
- * doesn't actually return.
- *
- * Side effects:
- * tclsh cleanly exits.
- *
- *----------------------------------------------------------------------
- */
-
-int
-asyncExit (ClientData clientData, Tcl_Interp *interp, int code)
-{
- Tcl_Exit((int)exitErrorCode);
-
- /* NOTREACHED */
- return code;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * sigHandler --
- *
- * Signal handler for the Win32 OS. Catches Ctrl+C, Ctrl+Break and
- * other exits. This is needed so tclsh can do it's real clean-up
- * and not an unclean crash terminate.
- *
- * Results:
- * TRUE.
- *
- * Side effects:
- * Effects the way the app exits from a signal. This is an
- * operating system supplied thread and unsafe to call ANY
- * Tcl commands except for Tcl_AsyncMark.
- *
- *----------------------------------------------------------------------
- */
-
-BOOL __stdcall
-sigHandler(DWORD fdwCtrlType)
-{
- HANDLE hStdIn;
- /*
- * If Tcl is currently executing some bytecode or in the eventloop,
- * this will cause Tcl to enter asyncExit at the next command
- * boundry.
- */
- exitErrorCode = fdwCtrlType;
- Tcl_AsyncMark(exitToken);
-
- /*
- * This will cause Tcl_Gets in Tcl_Main() to drop-out with an <EOF>
- * should it be blocked on input and our Tcl_AsyncMark didn't grab
- * the attention of the interpreter.
- */
- hStdIn = GetStdHandle(STD_INPUT_HANDLE);
- if (hStdIn) {
- CloseHandle(hStdIn);
- }
-
- /* indicate to the OS not to call the default terminator */
- return TRUE;
-}
+/*
+ * tclAppInit.c --
+ *
+ * Provides a default version of the main program and Tcl_AppInit
+ * procedure for Tcl applications (without Tk). Note that this
+ * program must be built in Win32 console mode to work properly.
+ *
+ * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
+ * Copyright (c) 1998-1999 by Scriptics Corporation.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * RCS: @(#) $Id: tclAppInit.c,v 1.12 2003/05/10 02:52:54 mistachkin Exp $
+ */
+
+#include "tcl.h"
+#include <windows.h>
+#include <locale.h>
+
+#ifdef TCL_TEST
+extern int Procbodytest_Init _ANSI_ARGS_((Tcl_Interp *interp));
+extern int Procbodytest_SafeInit _ANSI_ARGS_((Tcl_Interp *interp));
+extern int Tcltest_Init _ANSI_ARGS_((Tcl_Interp *interp));
+extern int TclObjTest_Init _ANSI_ARGS_((Tcl_Interp *interp));
+#ifdef TCL_THREADS
+extern int TclThread_Init _ANSI_ARGS_((Tcl_Interp *interp));
+#endif
+#endif /* TCL_TEST */
+
+static void setargv _ANSI_ARGS_((int *argcPtr, char ***argvPtr));
+static BOOL __stdcall sigHandler (DWORD fdwCtrlType);
+static Tcl_AsyncProc asyncExit;
+static void AppInitExitHandler(ClientData clientData);
+
+static char ** argvSave = NULL;
+static Tcl_AsyncHandler exitToken = NULL;
+static DWORD exitErrorCode = 0;
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * main --
+ *
+ * This is the main program for the application.
+ *
+ * Results:
+ * None: Tcl_Main never returns here, so this procedure never
+ * returns either.
+ *
+ * Side effects:
+ * Whatever the application does.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+main(argc, argv)
+ int argc; /* Number of command-line arguments. */
+ char **argv; /* Values of command-line arguments. */
+{
+ /*
+ * The following #if block allows you to change the AppInit
+ * function by using a #define of TCL_LOCAL_APPINIT instead
+ * of rewriting this entire file. The #if checks for that
+ * #define and uses Tcl_AppInit if it doesn't exist.
+ */
+
+#ifndef TCL_LOCAL_APPINIT
+#define TCL_LOCAL_APPINIT Tcl_AppInit
+#endif
+ extern int TCL_LOCAL_APPINIT _ANSI_ARGS_((Tcl_Interp *interp));
+
+ /*
+ * The following #if block allows you to change how Tcl finds the startup
+ * script, prime the library or encoding paths, fiddle with the argv,
+ * etc., without needing to rewrite Tcl_Main()
+ */
+
+#ifdef TCL_LOCAL_MAIN_HOOK
+ extern int TCL_LOCAL_MAIN_HOOK _ANSI_ARGS_((int *argc, char ***argv));
+#endif
+
+ char buffer[MAX_PATH +1];
+ char *p;
+ /*
+ * Set up the default locale to be standard "C" locale so parsing
+ * is performed correctly.
+ */
+
+ setlocale(LC_ALL, "C");
+ setargv(&argc, &argv);
+
+ /*
+ * Save this for later, so we can free it.
+ */
+ argvSave = argv;
+
+ /*
+ * Replace argv[0] with full pathname of executable, and forward
+ * slashes substituted for backslashes.
+ */
+
+ GetModuleFileName(NULL, buffer, sizeof(buffer));
+ argv[0] = buffer;
+ for (p = buffer; *p != '\0'; p++) {
+ if (*p == '\\') {
+ *p = '/';
+ }
+ }
+
+#ifdef TCL_LOCAL_MAIN_HOOK
+ TCL_LOCAL_MAIN_HOOK(&argc, &argv);
+#endif
+
+ Tcl_Main(argc, argv, TCL_LOCAL_APPINIT);
+
+ return 0; /* Needed only to prevent compiler warning. */
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tcl_AppInit --
+ *
+ * This procedure performs application-specific initialization.
+ * Most applications, especially those that incorporate additional
+ * packages, will have their own version of this procedure.
+ *
+ * Results:
+ * Returns a standard Tcl completion code, and leaves an error
+ * message in the interp's result if an error occurs.
+ *
+ * Side effects:
+ * Depends on the startup script.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+Tcl_AppInit(interp)
+ Tcl_Interp *interp; /* Interpreter for application. */
+{
+ if (Tcl_Init(interp) == TCL_ERROR) {
+ return TCL_ERROR;
+ }
+
+ /*
+ * Install a signal handler to the win32 console tclsh is running in.
+ */
+ SetConsoleCtrlHandler(sigHandler, TRUE);
+ exitToken = Tcl_AsyncCreate(asyncExit, NULL);
+
+ /*
+ * This exit handler will be used to free the
+ * resources allocated in this file.
+ */
+ Tcl_CreateExitHandler(AppInitExitHandler, NULL);
+
+#ifdef TCL_TEST
+ if (Tcltest_Init(interp) == TCL_ERROR) {
+ return TCL_ERROR;
+ }
+ Tcl_StaticPackage(interp, "Tcltest", Tcltest_Init,
+ (Tcl_PackageInitProc *) NULL);
+ if (TclObjTest_Init(interp) == TCL_ERROR) {
+ return TCL_ERROR;
+ }
+#ifdef TCL_THREADS
+ if (TclThread_Init(interp) == TCL_ERROR) {
+ return TCL_ERROR;
+ }
+#endif
+ if (Procbodytest_Init(interp) == TCL_ERROR) {
+ return TCL_ERROR;
+ }
+ Tcl_StaticPackage(interp, "procbodytest", Procbodytest_Init,
+ Procbodytest_SafeInit);
+#endif /* TCL_TEST */
+
+#if defined(STATIC_BUILD) && defined(TCL_USE_STATIC_PACKAGES)
+ {
+ extern Tcl_PackageInitProc Registry_Init;
+ extern Tcl_PackageInitProc Dde_Init;
+
+ if (Registry_Init(interp) == TCL_ERROR) {
+ return TCL_ERROR;
+ }
+ Tcl_StaticPackage(interp, "registry", Registry_Init, NULL);
+
+ if (Dde_Init(interp) == TCL_ERROR) {
+ return TCL_ERROR;
+ }
+ Tcl_StaticPackage(interp, "dde", Dde_Init, NULL);
+ }
+#endif
+
+ /*
+ * Call the init procedures for included packages. Each call should
+ * look like this:
+ *
+ * if (Mod_Init(interp) == TCL_ERROR) {
+ * return TCL_ERROR;
+ * }
+ *
+ * where "Mod" is the name of the module.
+ */
+
+ /*
+ * Call Tcl_CreateCommand for application-specific commands, if
+ * they weren't already created by the init procedures called above.
+ */
+
+ /*
+ * Specify a user-specific startup file to invoke if the application
+ * is run interactively. Typically the startup file is "~/.apprc"
+ * where "app" is the name of the application. If this line is deleted
+ * then no user-specific startup file will be run under any conditions.
+ */
+
+ Tcl_SetVar(interp, "tcl_rcFileName", "~/tclshrc.tcl", TCL_GLOBAL_ONLY);
+ return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * AppInitExitHandler --
+ *
+ * This function is called to cleanup the app init resources before
+ * Tcl is unloaded.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Frees the saved argv and deletes the async exit handler.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AppInitExitHandler(
+ ClientData clientData)
+{
+ if (argvSave != NULL) {
+ ckfree((char *)argvSave);
+ argvSave = NULL;
+ }
+
+ if (exitToken != NULL) {
+ /*
+ * This should be safe to do even if we
+ * are in an async exit right now.
+ */
+ Tcl_AsyncDelete(exitToken);
+ exitToken = NULL;
+ }
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
+ * setargv --
+ *
+ * Parse the Windows command line string into argc/argv. Done here
+ * because we don't trust the builtin argument parser in crt0.
+ * Windows applications are responsible for breaking their command
+ * line into arguments.
+ *
+ * 2N backslashes + quote -> N backslashes + begin quoted string
+ * 2N + 1 backslashes + quote -> literal
+ * N backslashes + non-quote -> literal
+ * quote + quote in a quoted string -> single quote
+ * quote + quote not in quoted string -> empty string
+ * quote -> begin quoted string
+ *
+ * Results:
+ * Fills argcPtr with the number of arguments and argvPtr with the
+ * array of arguments.
+ *
+ * Side effects:
+ * Memory allocated.
+ *
+ *--------------------------------------------------------------------------
+ */
+
+static void
+setargv(argcPtr, argvPtr)
+ int *argcPtr; /* Filled with number of argument strings. */
+ char ***argvPtr; /* Filled with argument strings (malloc'd). */
+{
+ char *cmdLine, *p, *arg, *argSpace;
+ char **argv;
+ int argc, size, inquote, copy, slashes;
+
+ cmdLine = GetCommandLine(); /* INTL: BUG */
+
+ /*
+ * Precompute an overly pessimistic guess at the number of arguments
+ * in the command line by counting non-space spans.
+ */
+
+ size = 2;
+ for (p = cmdLine; *p != '\0'; p++) {
+ if ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
+ size++;
+ while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
+ p++;
+ }
+ if (*p == '\0') {
+ break;
+ }
+ }
+ }
+ argSpace = (char *) Tcl_Alloc(
+ (unsigned) (size * sizeof(char *) + strlen(cmdLine) + 1));
+ argv = (char **) argSpace;
+ argSpace += size * sizeof(char *);
+ size--;
+
+ p = cmdLine;
+ for (argc = 0; argc < size; argc++) {
+ argv[argc] = arg = argSpace;
+ while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
+ p++;
+ }
+ if (*p == '\0') {
+ break;
+ }
+
+ inquote = 0;
+ slashes = 0;
+ while (1) {
+ copy = 1;
+ while (*p == '\\') {
+ slashes++;
+ p++;
+ }
+ if (*p == '"') {
+ if ((slashes & 1) == 0) {
+ copy = 0;
+ if ((inquote) && (p[1] == '"')) {
+ p++;
+ copy = 1;
+ } else {
+ inquote = !inquote;
+ }
+ }
+ slashes >>= 1;
+ }
+
+ while (slashes) {
+ *arg = '\\';
+ arg++;
+ slashes--;
+ }
+
+ if ((*p == '\0')
+ || (!inquote && ((*p == ' ') || (*p == '\t')))) { /* INTL: ISO space. */
+ break;
+ }
+ if (copy != 0) {
+ *arg = *p;
+ arg++;
+ }
+ p++;
+ }
+ *arg = '\0';
+ argSpace = arg + 1;
+ }
+ argv[argc] = NULL;
+
+ *argcPtr = argc;
+ *argvPtr = argv;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * asyncExit --
+ *
+ * The AsyncProc for the exitToken.
+ *
+ * Results:
+ * doesn't actually return.
+ *
+ * Side effects:
+ * tclsh cleanly exits.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+asyncExit (ClientData clientData, Tcl_Interp *interp, int code)
+{
+ Tcl_Exit((int)exitErrorCode);
+
+ /* NOTREACHED */
+ return code;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * sigHandler --
+ *
+ * Signal handler for the Win32 OS. Catches Ctrl+C, Ctrl+Break and
+ * other exits. This is needed so tclsh can do it's real clean-up
+ * and not an unclean crash terminate.
+ *
+ * Results:
+ * TRUE.
+ *
+ * Side effects:
+ * Effects the way the app exits from a signal. This is an
+ * operating system supplied thread and unsafe to call ANY
+ * Tcl commands except for Tcl_AsyncMark.
+ *
+ *----------------------------------------------------------------------
+ */
+
+BOOL __stdcall
+sigHandler(DWORD fdwCtrlType)
+{
+ HANDLE hStdIn;
+ /*
+ * If Tcl is currently executing some bytecode or in the eventloop,
+ * this will cause Tcl to enter asyncExit at the next command
+ * boundry.
+ */
+ exitErrorCode = fdwCtrlType;
+ Tcl_AsyncMark(exitToken);
+
+ /*
+ * This will cause Tcl_Gets in Tcl_Main() to drop-out with an <EOF>
+ * should it be blocked on input and our Tcl_AsyncMark didn't grab
+ * the attention of the interpreter.
+ */
+ hStdIn = GetStdHandle(STD_INPUT_HANDLE);
+ if (hStdIn) {
+ CloseHandle(hStdIn);
+ }
+
+ /* indicate to the OS not to call the default terminator */
+ return TRUE;
+}