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/*
* tclNRE.h --
*
* This file contains declarations for the infrastructure for
* non-recursive commands. Contents may or may not migrate to tcl.h,
* tcl.decls, tclInt.h and/or tclInt.decls
*
* Copyright (c) 2008 by Miguel Sofer
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* // FIXME: RCS numbering?
* RCS: @(#) $Id: tclNRE.h,v 1.10 2008/07/29 20:53:22 msofer Exp $
*/
#ifndef _TCLNONREC
#define _TCLNONREC
/*****************************************************************************
* Stuff during devel
*****************************************************************************/
#define ENABLE_ASSERTS 0
#define USE_SMALL_ALLOC 1 /* Only turn off for debugging purposes. */
/*
* TEOV_callback -
*
* Main data struct for representing NR commands. It is designed to fit in
* sizeof(Tcl_Obj) in order to exploit the fastest memory allocator available.
*/
typedef struct TEOV_callback {
Tcl_NRPostProc *procPtr;
ClientData data[4];
struct TEOV_callback *nextPtr;
} TEOV_callback;
#define TOP_CB(iPtr) (((Interp *)(iPtr))->execEnvPtr->callbackPtr)
/*
* Inline version of Tcl_NRAddCallback
*/
#define TclNRAddCallback( \
interp, \
postProcPtr, \
data0, \
data1, \
data2, \
data3) \
{ \
TEOV_callback *callbackPtr; \
TCLNR_ALLOC((interp), (callbackPtr)); \
callbackPtr->procPtr = (postProcPtr); \
callbackPtr->data[0] = (data0); \
callbackPtr->data[1] = (data1); \
callbackPtr->data[2] = (data2); \
callbackPtr->data[3] = (data3); \
callbackPtr->nextPtr = TOP_CB(interp); \
TOP_CB(interp) = callbackPtr; \
}
/*
* Tailcalls!
*/
MODULE_SCOPE Tcl_ObjCmdProc TclTailcallObjCmd;
/*****************************************************************************
* Stuff that goes away: temp during devel
*****************************************************************************/
#if USE_SMALL_ALLOC
#define TCLNR_ALLOC(interp, ptr) TclSmallAllocEx(interp, sizeof(TEOV_callback), (ptr))
#define TCLNR_FREE(interp, ptr) TclSmallFreeEx((interp), (ptr))
#else
#define TCLNR_ALLOC(interp, ptr) (ptr = ((ClientData) ckalloc(sizeof(TEOV_callback))))
#define TCLNR_FREE(interp, ptr) ckfree((char *) (ptr))
#endif
#if ENABLE_ASSERTS
#include <assert.h>
#else
#define assert(expr)
#endif
#endif /* _TCLNONREC */
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