/*
 * The per-thread event and queue pointers.
 */

#if TCL_THREADS

typedef struct ThreadSpecificData {
    HANDLE condEvent;		/* Per-thread condition event */
    struct ThreadSpecificData *nextPtr;	/* Queue pointers */
    struct ThreadSpecificData *prevPtr;
    int flags;			/* See flags below */
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;

#endif /* TCL_THREADS */

/*
 * State bits for the thread.

 * Additions by AOL for specialized thread memory allocator.
 */

#ifdef USE_THREAD_ALLOC
static DWORD tlsKey;

typedef struct {
    Tcl_Mutex tlock;
    CRITICAL_SECTION wlock;
} allocMutex;
#endif /* USE_THREAD_ALLOC */

/*
 * The per thread data passed from TclpThreadCreate
 * to TclWinThreadStart.
 */

typedef struct {
    LPTHREAD_START_ROUTINE lpStartAddress;
				/* Original startup routine */
    LPVOID lpParameter;		/* Original startup data */
    unsigned int fpControl;	/* Floating point control word from the
				 * main thread */
} WinThread;


/*
 *----------------------------------------------------------------------
 *
 * TclWinThreadStart --
 *
 *	This procedure is the entry point for all new threads created

	TclpGlobalLock();

	/*
	 * Double inside global lock check to avoid a race.
	 */

	if (*mutexPtr == NULL) {
	    csPtr = (CRITICAL_SECTION *) Tcl_Alloc(sizeof(CRITICAL_SECTION));
	    InitializeCriticalSection(csPtr);
	    *mutexPtr = (Tcl_Mutex) csPtr;
	    TclRememberMutex(mutexPtr);
	}
	TclpGlobalUnlock();
    }
    csPtr = *((CRITICAL_SECTION **)mutexPtr);
    EnterCriticalSection(csPtr);
}

 *----------------------------------------------------------------------
 */

void
Tcl_ConditionWait(
    Tcl_Condition *condPtr,	/* Really (WinCondition **) */
    Tcl_Mutex *mutexPtr,	/* Really (CRITICAL_SECTION **) */
    const Tcl_Time *timePtr)	/* Timeout on waiting period */
{
    WinCondition *winCondPtr;	/* Per-condition queue head */
    CRITICAL_SECTION *csPtr;	/* Caller's Mutex, after casting */
    DWORD wtime;		/* Windows time value */
    int timeout;		/* True if we got a timeout */
    int doExit = 0;		/* True if we need to do exit setup */
    ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);

    if (winCondPtr != NULL) {
	DeleteCriticalSection(&winCondPtr->condLock);
	Tcl_Free(winCondPtr);
	*condPtr = NULL;
    }
}




/*
 * Additions by AOL for specialized thread memory allocator.
 */
#ifdef USE_THREAD_ALLOC

Tcl_Mutex *
TclpNewAllocMutex(void)

	success = TlsFree(tlsKey);
	if (!success) {
	    Tcl_Panic("TlsFree failed from TclpFreeAllocCache");
	}
    }
}
#endif /* USE_THREAD_ALLOC */


void *
TclpThreadCreateKey(void)
{
    DWORD *key;

    key = (DWORD *)TclpSysAlloc(sizeof *key);