/*
 * An instance of the following structure contains all information that is
 * passed into a new thread when the thread is created using either the
 * "thread create" Tcl command or the ThreadCreate() C function.
 */

typedef struct ThreadCtrl {
    const char *script;		/* The Tcl command this thread should
				 * execute */
    int flags;			/* Initial value of the "flags" field in the
				 * ThreadSpecificData structure for the new
				 * thread. Might contain TP_Detached or
				 * TP_TclThread. */
    Tcl_Condition condWait;	/* This condition variable is used to
				 * synchronize the parent and child threads.

 */

TCL_DECLARE_MUTEX(threadMutex)

static int		ThreadObjCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
static int		ThreadCreate(Tcl_Interp *interp, const char *script,
			    int joinable);
static int		ThreadList(Tcl_Interp *interp);
static int		ThreadSend(Tcl_Interp *interp, Tcl_ThreadId id,
			    const char *script, int wait);
static int		ThreadCancel(Tcl_Interp *interp, Tcl_ThreadId id,
			    const char *result, int flags);

	    result = Tcl_GetString(objv[arg]);
	} else {
	    result = NULL;
	}
	return ThreadCancel(interp, (Tcl_ThreadId) (size_t) id, result, flags);
    }
    case THREAD_CREATE: {
	const char *script;
	int joinable, len;

	if (objc == 2) {
	    /*
	     * Neither joinable nor special script
	     */

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

	/* ARGSUSED */
static int
ThreadCreate(
    Tcl_Interp *interp,		/* Current interpreter. */
    const char *script,		/* Script to execute */
    int joinable)		/* Flag, joinable thread or not */
{
    ThreadCtrl ctrl;
    Tcl_ThreadId id;

    ctrl.script = script;
    ctrl.condWait = NULL;