diff options
Diffstat (limited to 'mac/tclMacExit.c')
-rw-r--r-- | mac/tclMacExit.c | 333 |
1 files changed, 0 insertions, 333 deletions
diff --git a/mac/tclMacExit.c b/mac/tclMacExit.c deleted file mode 100644 index 347ff4e..0000000 --- a/mac/tclMacExit.c +++ /dev/null @@ -1,333 +0,0 @@ -/* - * tclMacExit.c -- - * - * This file contains routines that deal with cleaning up various state - * when Tcl/Tk applications quit. Unfortunantly, not all state is cleaned - * up by the process when an application quites or crashes. Also you - * need to do different things depending on wether you are running as - * 68k code, PowerPC, or a code resource. The Exit handler code was - * adapted from code posted on alt.sources.mac by Dave Nebinger. - * - * Copyright (c) 1995 Dave Nebinger. - * Copyright (c) 1995-1996 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. - * - * RCS: @(#) $Id: tclMacExit.c,v 1.4 1999/04/16 00:47:19 stanton Exp $ - */ - -#include "tclInt.h" -#include "tclMacInt.h" -#include <SegLoad.h> -#include <Traps.h> -#include <Processes.h> - -/* - * Various typedefs and defines needed to patch ExitToShell. - */ - -enum { - uppExitToShellProcInfo = kPascalStackBased -}; - -#if GENERATINGCFM -typedef UniversalProcPtr ExitToShellUPP; - -#define CallExitToShellProc(userRoutine) \ - CallUniversalProc((UniversalProcPtr)(userRoutine),uppExitToShellProcInfo) -#define NewExitToShellProc(userRoutine) \ - (ExitToShellUPP)NewRoutineDescriptor((ProcPtr)(userRoutine), \ - uppExitToShellProcInfo, GetCurrentArchitecture()) - -#else -typedef ExitToShellProcPtr ExitToShellUPP; - -#define CallExitToShellProc(userRoutine) \ - (*(userRoutine))() -#define NewExitToShellProc(userRoutine) \ - (ExitToShellUPP)(userRoutine) -#endif - -#define DisposeExitToShellProc(userRoutine) \ - DisposeRoutineDescriptor(userRoutine) - -#if defined(powerc)||defined(__powerc) -#pragma options align=mac68k -#endif -struct ExitToShellUPPList{ - struct ExitToShellUPPList* nextProc; - ExitToShellUPP userProc; -}; -#if defined(powerc)||defined(__powerc) -#pragma options align=reset -#endif - -typedef struct ExitToShellDataStruct ExitToShellDataRec,* ExitToShellDataPtr,** ExitToShellDataHdl; - -typedef struct ExitToShellUPPList ExitToShellUPPList,* ExitToShellUPPListPtr,** ExitToShellUPPHdl; - -#if defined(powerc)||defined(__powerc) -#pragma options align=mac68k -#endif -struct ExitToShellDataStruct{ - unsigned long a5; - ExitToShellUPPList* userProcs; - ExitToShellUPP oldProc; -}; -#if defined(powerc)||defined(__powerc) -#pragma options align=reset -#endif - -/* - * Static globals used within this file. - */ -static ExitToShellDataPtr gExitToShellData = (ExitToShellDataPtr) NULL; - - -/* - *---------------------------------------------------------------------- - * - * TclPlatformExit -- - * - * This procedure implements the Macintosh specific exit routine. - * We explicitly callthe ExitHandler function to do various clean - * up. - * - * Results: - * None. - * - * Side effects: - * We exit the process. - * - *---------------------------------------------------------------------- - */ - -void -TclpExit( - int status) /* Ignored. */ -{ - TclMacExitHandler(); - -/* - * If we are using the Metrowerks Standard Library, then we will call its exit so that it - * will get a chance to clean up temp files, and so forth. It always calls the standard - * ExitToShell, so the Tcl handlers will also get called. - * - * If you have another exit, make sure that it does not patch ExitToShell, and does - * call it. If so, it will probably work as well. - * - */ - -#ifdef __MSL__ - exit(status); -#else - ExitToShell(); -#endif - -} - -/* - *---------------------------------------------------------------------- - * - * TclMacExitHandler -- - * - * This procedure is invoked after Tcl at the last possible moment - * to clean up any state Tcl has left around that may cause other - * applications to crash. For example, this function can be used - * as the termination routine for CFM applications. - * - * Results: - * None. - * - * Side effects: - * Various cleanup occurs. - * - *---------------------------------------------------------------------- - */ - -void -TclMacExitHandler() -{ - ExitToShellUPPListPtr curProc; - - /* - * Loop through all installed Exit handlers - * and call them. Always make sure we are in - * a clean state in case we are recursivly called. - */ - if ((gExitToShellData) != NULL && (gExitToShellData->userProcs != NULL)){ - - /* - * Call the installed exit to shell routines. - */ - curProc = gExitToShellData->userProcs; - do { - gExitToShellData->userProcs = curProc->nextProc; - CallExitToShellProc(curProc->userProc); - DisposeExitToShellProc(curProc->userProc); - DisposePtr((Ptr) curProc); - curProc = gExitToShellData->userProcs; - } while (curProc != (ExitToShellUPPListPtr) NULL); - } - - return; -} - -/* - *---------------------------------------------------------------------- - * - * TclMacInstallExitToShellPatch -- - * - * This procedure installs a way to clean up state at the latest - * possible moment before we exit. These are things that must - * be cleaned up or the system will crash. The exact way in which - * this is implemented depends on the architecture in which we are - * running. For 68k applications we patch the ExitToShell call. - * For PowerPC applications we just create a list of procs to call. - * The function ExitHandler should be installed in the Code - * Fragments terminiation routine. - * - * Results: - * None. - * - * Side effects: - * Installs the new routine. - * - *---------------------------------------------------------------------- - */ - -OSErr -TclMacInstallExitToShellPatch( - ExitToShellProcPtr newProc) /* Function pointer. */ -{ - ExitToShellUPP exitHandler; - ExitToShellUPPListPtr listPtr; - - if (gExitToShellData == (ExitToShellDataPtr) NULL){ - TclMacInitExitToShell(true); - } - - /* - * Add the passed in function pointer to the list of functions - * to be called when ExitToShell is called. - */ - exitHandler = NewExitToShellProc(newProc); - listPtr = (ExitToShellUPPListPtr) NewPtrClear(sizeof(ExitToShellUPPList)); - listPtr->userProc = exitHandler; - listPtr->nextProc = gExitToShellData->userProcs; - gExitToShellData->userProcs = listPtr; - - return noErr; -} - -/* - *---------------------------------------------------------------------- - * - * ExitToShellPatchRoutine -- - * - * This procedure is invoked when someone calls ExitToShell for - * this application. This function performs some last miniute - * clean up and then calls the real ExitToShell routine. - * - * Results: - * None. - * - * Side effects: - * Various cleanup occurs. - * - *---------------------------------------------------------------------- - */ - -static pascal void -ExitToShellPatchRoutine() -{ - ExitToShellUPP oldETS; - long oldA5; - - /* - * Set up our A5 world. This allows us to have - * access to our global variables in the 68k world. - */ - oldA5 = SetCurrentA5(); - SetA5(gExitToShellData->a5); - - /* - * Call the function that invokes all - * of the handlers. - */ - TclMacExitHandler(); - - /* - * Call the origional ExitToShell routine. - */ - oldETS = gExitToShellData->oldProc; - DisposePtr((Ptr) gExitToShellData); - SetA5(oldA5); - CallExitToShellProc(oldETS); - return; -} - -/* - *---------------------------------------------------------------------- - * - * TclMacInitExitToShell -- - * - * This procedure initializes the ExitToShell clean up machanism. - * Generally, this is handled automatically when users make a call - * to InstallExitToShellPatch. However, it can be called - * explicitly at startup time to turn off the patching mechanism. - * This can be used by code resources which could be removed from - * the application before ExitToShell is called. - * - * Note, if we are running from CFM code we never install the - * patch. Instead, the function ExitHandler should be installed - * as the terminiation routine for the code fragment. - * - * Results: - * None. - * - * Side effects: - * Creates global state. - * - *---------------------------------------------------------------------- - */ - -void -TclMacInitExitToShell( - int usePatch) /* True if on 68k. */ -{ - if (gExitToShellData == (ExitToShellDataPtr) NULL){ -#if GENERATINGCFM - gExitToShellData = (ExitToShellDataPtr) - NewPtr(sizeof(ExitToShellDataRec)); - gExitToShellData->a5 = SetCurrentA5(); - gExitToShellData->userProcs = (ExitToShellUPPList*) NULL; -#else - ExitToShellUPP oldExitToShell, newExitToShellPatch; - short exitToShellTrap; - - /* - * Initialize patch mechanism. - */ - - gExitToShellData = (ExitToShellDataPtr) NewPtr(sizeof(ExitToShellDataRec)); - gExitToShellData->a5 = SetCurrentA5(); - gExitToShellData->userProcs = (ExitToShellUPPList*) NULL; - - /* - * Save state needed to call origional ExitToShell routine. Install - * the new ExitToShell code in it's place. - */ - if (usePatch) { - exitToShellTrap = _ExitToShell & 0x3ff; - newExitToShellPatch = NewExitToShellProc(ExitToShellPatchRoutine); - oldExitToShell = (ExitToShellUPP) - NGetTrapAddress(exitToShellTrap, ToolTrap); - NSetTrapAddress((UniversalProcPtr) newExitToShellPatch, - exitToShellTrap, ToolTrap); - gExitToShellData->oldProc = oldExitToShell; - } -#endif - } -} |