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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 1.7 2008/07/29 05:30:36 msofer Exp $
*/
#ifndef _TCLNONREC
#define _TCLNONREC
/*****************************************************************************
* Stuff during devel
*****************************************************************************/
#define USE_SMALL_ALLOC 1 /* perf is important for some of these things! */
#define ENABLE_ASSERTS 1
/*****************************************************************************
* Private api fo NRE
*****************************************************************************/
/*
* Main data struct for representing NR commands (generated at runtime).
*/
struct ByteCode;
/* Fill up a SmallAlloc: 4 free ptrs for the user */
typedef struct TEOV_callback {
Tcl_NRPostProc *procPtr;
ClientData data[4];
struct TEOV_callback *nextPtr;
} TEOV_callback;
#define TOP_CB(iPtr) (((Interp *)(iPtr))->execEnvPtr->callbackPtr)
#define GET_TOSPTR(iPtr) \
(((Interp *)iPtr)->execEnvPtr->execStackPtr->tosPtr)
/*
* Inline version of Tcl_NRAddCallback
*/
#define TclNRAddCallback( \
interp, \
postProcPtr, \
data0, \
data1, \
data2, \
data3) \
{ \
TEOV_callback *callbackPtr; \
TclSmallAlloc(sizeof(TEOV_callback), 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) TclSmallAlloc(sizeof(TEOV_callback), ptr)
#define TCLNR_FREE(interp, ptr) TclSmallFree((ptr))
#else
#define TCLNR_ALLOC(interp, size, 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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