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/*
* tclWinInt.h --
*
* Declarations of Windows-specific shared variables and procedures.
*
* Copyright (c) 1994-1996 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#ifndef _TCLWININT
#define _TCLWININT
#include "tclInt.h"
#ifdef HAVE_NO_SEH
/*
* Unlike Borland and Microsoft, we don't register exception handlers by
* pushing registration records onto the runtime stack. Instead, we register
* them by creating an TCLEXCEPTION_REGISTRATION within the activation record.
*/
typedef struct TCLEXCEPTION_REGISTRATION {
struct TCLEXCEPTION_REGISTRATION *link;
EXCEPTION_DISPOSITION (*handler)(
struct _EXCEPTION_RECORD*, void*, struct _CONTEXT*, void*);
void *ebp;
void *esp;
int status;
} TCLEXCEPTION_REGISTRATION;
#endif
/*
* Declarations of functions that are not accessible by way of the
* stubs table.
*/
MODULE_SCOPE char TclWinDriveLetterForVolMountPoint(
const WCHAR *mountPoint);
MODULE_SCOPE void TclWinEncodingsCleanup(void);
MODULE_SCOPE void TclWinInit(HINSTANCE hInst);
MODULE_SCOPE TclFile TclWinMakeFile(HANDLE handle);
MODULE_SCOPE Tcl_Channel TclWinOpenConsoleChannel(HANDLE handle,
char *channelName, int permissions);
MODULE_SCOPE Tcl_Channel TclWinOpenSerialChannel(HANDLE handle,
char *channelName, int permissions);
MODULE_SCOPE HANDLE TclWinSerialOpen(HANDLE handle, const WCHAR *name,
DWORD access);
MODULE_SCOPE int TclWinSymLinkCopyDirectory(const WCHAR *LinkOriginal,
const WCHAR *LinkCopy);
MODULE_SCOPE int TclWinSymLinkDelete(const WCHAR *LinkOriginal,
int linkOnly);
MODULE_SCOPE int TclWinFileOwned(Tcl_Obj *);
MODULE_SCOPE const char*TclpGetUserName(Tcl_DString *bufferPtr);
/* Needed by tclWinFile.c and tclWinFCmd.c */
#ifndef FILE_ATTRIBUTE_REPARSE_POINT
#define FILE_ATTRIBUTE_REPARSE_POINT 0x00000400
#endif
/*
*----------------------------------------------------------------------
* Declarations of helper-workers threaded facilities for a pipe based channel.
*
* Corresponding functionality provided in "tclWinPipe.c".
*----------------------------------------------------------------------
*/
typedef struct TclPipeThreadInfo {
HANDLE evControl; /* Auto-reset event used by the main thread to
* signal when the pipe thread should attempt
* to do read/write operation. Additionally
* used as signal to stop (state set to -1) */
volatile LONG state; /* Indicates current state of the thread */
void *clientData; /* Referenced data of the main thread */
HANDLE evWakeUp; /* Optional wake-up event worker set by shutdown */
} TclPipeThreadInfo;
/* If pipe-workers will use some tcl subsystem, we can use ckalloc without
* more overhead for finalize thread (should be executed anyway)
*
* #define _PTI_USE_CKALLOC 1
*/
/*
* State of the pipe-worker.
*
* State PTI_STATE_STOP possible from idle state only, worker owns TI structure.
* Otherwise PTI_STATE_END used (main thread hold ownership of the TI).
*/
#define PTI_STATE_IDLE 0 /* idle or not yet initialzed */
#define PTI_STATE_WORK 1 /* in work */
#define PTI_STATE_STOP 2 /* thread should stop work (owns TI structure) */
#define PTI_STATE_END 4 /* thread should stop work (worker is busy) */
#define PTI_STATE_DOWN 8 /* worker is down */
MODULE_SCOPE
TclPipeThreadInfo * TclPipeThreadCreateTI(TclPipeThreadInfo **pipeTIPtr,
void *clientData, HANDLE wakeEvent);
MODULE_SCOPE int TclPipeThreadWaitForSignal(TclPipeThreadInfo **pipeTIPtr);
static inline void
TclPipeThreadSignal(
TclPipeThreadInfo **pipeTIPtr)
{
TclPipeThreadInfo *pipeTI = *pipeTIPtr;
if (pipeTI) {
SetEvent(pipeTI->evControl);
}
};
static inline int
TclPipeThreadIsAlive(
TclPipeThreadInfo **pipeTIPtr)
{
TclPipeThreadInfo *pipeTI = *pipeTIPtr;
return (pipeTI && pipeTI->state != PTI_STATE_DOWN);
};
MODULE_SCOPE int TclPipeThreadStopSignal(TclPipeThreadInfo **pipeTIPtr, HANDLE wakeEvent);
MODULE_SCOPE void TclPipeThreadStop(TclPipeThreadInfo **pipeTIPtr, HANDLE hThread);
MODULE_SCOPE void TclPipeThreadExit(TclPipeThreadInfo **pipeTIPtr);
#endif /* _TCLWININT */
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