761 lines
24 KiB
C
Executable File
761 lines
24 KiB
C
Executable File
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/* Jim - A small embeddable Tcl interpreter
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*
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* Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>
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* Copyright 2005 Clemens Hintze <c.hintze@gmx.net>
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* Copyright 2005 patthoyts - Pat Thoyts <patthoyts@users.sf.net>
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* Copyright 2008 oharboe - Øyvind Harboe - oyvind.harboe@zylin.com
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* Copyright 2008 Andrew Lunn <andrew@lunn.ch>
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* Copyright 2008 Duane Ellis <openocd@duaneellis.com>
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* Copyright 2008 Uwe Klein <uklein@klein-messgeraete.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation
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* are those of the authors and should not be interpreted as representing
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* official policies, either expressed or implied, of the Jim Tcl Project.
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**/
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#include "jim.h"
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#include "jimautoconf.h"
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#include "jim-eventloop.h"
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/* POSIX includes */
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#include <sys/time.h>
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#include <sys/types.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#if defined(__MINGW32__)
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#include <windows.h>
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#include <winsock.h>
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#define msleep Sleep
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#ifndef HAVE_USLEEP
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#define usleep(US) msleep((US) / 1000)
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#endif
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#else
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#include <sys/select.h>
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#ifndef HAVE_USLEEP
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/* XXX: Implement this in terms of select() or nanosleep() */
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#define usleep(US)
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#endif
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#define msleep(MS) sleep((MS) / 1000); usleep(((MS) % 1000) * 1000);
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#endif
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/* --- */
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/* File event structure */
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typedef struct Jim_FileEvent
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{
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FILE *handle;
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int mask; /* one of JIM_EVENT_(READABLE|WRITABLE|EXCEPTION) */
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Jim_FileProc *fileProc;
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Jim_EventFinalizerProc *finalizerProc;
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void *clientData;
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struct Jim_FileEvent *next;
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} Jim_FileEvent;
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/* Time event structure */
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typedef struct Jim_TimeEvent
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{
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jim_wide id; /* time event identifier. */
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int mode; /* restart, repetitive .. UK */
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long initialms; /* initial relativ timer value UK */
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long when_sec; /* seconds */
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long when_ms; /* milliseconds */
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Jim_TimeProc *timeProc;
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Jim_EventFinalizerProc *finalizerProc;
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void *clientData;
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struct Jim_TimeEvent *next;
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} Jim_TimeEvent;
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/* Per-interp stucture containing the state of the event loop */
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typedef struct Jim_EventLoop
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{
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jim_wide timeEventNextId;
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Jim_FileEvent *fileEventHead;
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Jim_TimeEvent *timeEventHead;
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int suppress_bgerror; /* bgerror returned break, so don't call it again */
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} Jim_EventLoop;
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static void JimAfterTimeHandler(Jim_Interp *interp, void *clientData);
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static void JimAfterTimeEventFinalizer(Jim_Interp *interp, void *clientData);
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int Jim_EvalObjBackground(Jim_Interp *interp, Jim_Obj *scriptObjPtr)
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{
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Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
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Jim_CallFrame *savedFramePtr;
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int retval;
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savedFramePtr = interp->framePtr;
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interp->framePtr = interp->topFramePtr;
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retval = Jim_EvalObj(interp, scriptObjPtr);
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interp->framePtr = savedFramePtr;
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/* Try to report the error (if any) via the bgerror proc */
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if (retval != JIM_OK && !eventLoop->suppress_bgerror) {
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Jim_Obj *objv[2];
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int rc = JIM_ERR;
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objv[0] = Jim_NewStringObj(interp, "bgerror", -1);
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objv[1] = Jim_GetResult(interp);
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Jim_IncrRefCount(objv[0]);
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Jim_IncrRefCount(objv[1]);
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if (Jim_GetCommand(interp, objv[0], JIM_NONE) == NULL || (rc = Jim_EvalObjVector(interp, 2, objv)) != JIM_OK) {
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if (rc == JIM_BREAK) {
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/* No more bgerror calls */
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eventLoop->suppress_bgerror++;
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}
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else {
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/* Report the error to stderr. */
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Jim_MakeErrorMessage(interp);
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fprintf(stderr, "%s\n", Jim_String(Jim_GetResult(interp)));
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/* And reset the result */
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Jim_SetResultString(interp, "", -1);
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}
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}
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Jim_DecrRefCount(interp, objv[0]);
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Jim_DecrRefCount(interp, objv[1]);
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}
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return retval;
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}
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void Jim_CreateFileHandler(Jim_Interp *interp, FILE * handle, int mask,
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Jim_FileProc * proc, void *clientData, Jim_EventFinalizerProc * finalizerProc)
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{
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Jim_FileEvent *fe;
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Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
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fe = Jim_Alloc(sizeof(*fe));
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fe->handle = handle;
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fe->mask = mask;
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fe->fileProc = proc;
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fe->finalizerProc = finalizerProc;
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fe->clientData = clientData;
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fe->next = eventLoop->fileEventHead;
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eventLoop->fileEventHead = fe;
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}
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void Jim_DeleteFileHandler(Jim_Interp *interp, FILE * handle)
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{
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Jim_FileEvent *fe, *prev = NULL;
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Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
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fe = eventLoop->fileEventHead;
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while (fe) {
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if (fe->handle == handle) {
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if (prev == NULL)
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eventLoop->fileEventHead = fe->next;
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else
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prev->next = fe->next;
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if (fe->finalizerProc)
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fe->finalizerProc(interp, fe->clientData);
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Jim_Free(fe);
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return;
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}
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prev = fe;
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fe = fe->next;
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}
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}
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static void JimGetTime(long *seconds, long *milliseconds)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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*seconds = tv.tv_sec;
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*milliseconds = tv.tv_usec / 1000;
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}
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jim_wide Jim_CreateTimeHandler(Jim_Interp *interp, jim_wide milliseconds,
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Jim_TimeProc * proc, void *clientData, Jim_EventFinalizerProc * finalizerProc)
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{
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Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
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jim_wide id = eventLoop->timeEventNextId++;
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Jim_TimeEvent *te, *e, *prev;
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long cur_sec, cur_ms;
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JimGetTime(&cur_sec, &cur_ms);
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te = Jim_Alloc(sizeof(*te));
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te->id = id;
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te->mode = 0;
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te->initialms = milliseconds;
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te->when_sec = cur_sec + milliseconds / 1000;
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te->when_ms = cur_ms + milliseconds % 1000;
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if (te->when_ms >= 1000) {
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te->when_sec++;
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te->when_ms -= 1000;
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}
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te->timeProc = proc;
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te->finalizerProc = finalizerProc;
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te->clientData = clientData;
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/* Add to the appropriate place in the list */
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if (eventLoop->timeEventHead) {
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prev = NULL;
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for (e = eventLoop->timeEventHead; e; e = e->next) {
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if (te->when_sec < e->when_sec || (te->when_sec == e->when_sec && te->when_ms < e->when_ms)) {
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break;
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}
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prev = e;
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}
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if (prev) {
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te->next = prev->next;
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prev->next = te;
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return id;
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}
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}
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te->next = eventLoop->timeEventHead;
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eventLoop->timeEventHead = te;
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return id;
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}
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static jim_wide JimParseAfterId(Jim_Obj *idObj)
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{
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int len;
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const char *tok = Jim_GetString(idObj, &len);
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jim_wide id;
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if (strncmp(tok, "after#", 6) == 0 && Jim_StringToWide(tok + 6, &id, 10) == JIM_OK) {
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/* Got an event by id */
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return id;
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}
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return -1;
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}
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static jim_wide JimFindAfterByScript(Jim_EventLoop *eventLoop, Jim_Obj *scriptObj)
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{
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Jim_TimeEvent *te;
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for (te = eventLoop->timeEventHead; te; te = te->next) {
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/* Is this an 'after' event? */
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if (te->timeProc == JimAfterTimeHandler) {
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if (Jim_StringEqObj(scriptObj, te->clientData)) {
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return te->id;
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}
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}
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}
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return -1; /* NO event with the specified ID found */
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}
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static Jim_TimeEvent *JimFindTimeHandlerById(Jim_EventLoop *eventLoop, jim_wide id)
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{
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Jim_TimeEvent *te;
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for (te = eventLoop->timeEventHead; te; te = te->next) {
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if (te->id == id) {
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return te;
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}
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}
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return NULL;
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}
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static Jim_TimeEvent *Jim_RemoveTimeHandler(Jim_EventLoop *eventLoop, jim_wide id)
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{
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Jim_TimeEvent *te, *prev = NULL;
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for (te = eventLoop->timeEventHead; te; te = te->next) {
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if (te->id == id) {
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if (prev == NULL)
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eventLoop->timeEventHead = te->next;
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else
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prev->next = te->next;
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return te;
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}
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prev = te;
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}
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return NULL;
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}
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static void Jim_FreeTimeHandler(Jim_Interp *interp, Jim_TimeEvent *te)
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{
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if (te->finalizerProc)
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te->finalizerProc(interp, te->clientData);
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Jim_Free(te);
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}
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jim_wide Jim_DeleteTimeHandler(Jim_Interp *interp, jim_wide id)
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{
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Jim_TimeEvent *te;
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Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
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if (id >= eventLoop->timeEventNextId) {
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return -2; /* wrong event ID */
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}
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te = Jim_RemoveTimeHandler(eventLoop, id);
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if (te) {
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jim_wide remain;
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long cur_sec, cur_ms;
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JimGetTime(&cur_sec, &cur_ms);
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remain = (te->when_sec - cur_sec) * 1000;
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remain += (te->when_ms - cur_ms);
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remain = (remain < 0) ? 0 : remain;
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Jim_FreeTimeHandler(interp, te);
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return remain;
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}
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return -1; /* NO event with the specified ID found */
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}
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/* --- POSIX version of Jim_ProcessEvents, for now the only available --- */
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/* Process every pending time event, then every pending file event
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* (that may be registered by time event callbacks just processed).
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* Without special flags the function sleeps until some file event
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* fires, or when the next time event occurrs (if any).
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*
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* If flags is 0, the function does nothing and returns.
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* if flags has JIM_ALL_EVENTS set, all the kind of events are processed.
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* if flags has JIM_FILE_EVENTS set, file events are processed.
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* if flags has JIM_TIME_EVENTS set, time events are processed.
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* if flags has JIM_DONT_WAIT set the function returns ASAP until all
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* the events that's possible to process without to wait are processed.
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*
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* The function returns the number of events processed or -1 if
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* there are no matching handlers, or -2 on error.
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*/
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int Jim_ProcessEvents(Jim_Interp *interp, int flags)
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{
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jim_wide sleep_ms = -1;
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int processed = 0;
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Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
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Jim_FileEvent *fe = eventLoop->fileEventHead;
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Jim_TimeEvent *te;
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jim_wide maxId;
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if ((flags & JIM_FILE_EVENTS) == 0 || fe == NULL) {
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/* No file events */
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if ((flags & JIM_TIME_EVENTS) == 0 || eventLoop->timeEventHead == NULL) {
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/* No time events */
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return -1;
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}
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}
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/* Note that we want call select() even if there are no
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* file events to process as long as we want to process time
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* events, in order to sleep until the next time event is ready
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* to fire. */
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if (flags & JIM_DONT_WAIT) {
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/* Wait no time */
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sleep_ms = 0;
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}
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else if (flags & JIM_TIME_EVENTS) {
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/* The nearest timer is always at the head of the list */
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if (eventLoop->timeEventHead) {
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Jim_TimeEvent *shortest = eventLoop->timeEventHead;
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long now_sec, now_ms;
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/* Calculate the time missing for the nearest
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* timer to fire. */
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JimGetTime(&now_sec, &now_ms);
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sleep_ms = 1000 * (shortest->when_sec - now_sec) + (shortest->when_ms - now_ms);
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if (sleep_ms < 0) {
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sleep_ms = 1;
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}
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}
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else {
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/* Wait forever */
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sleep_ms = -1;
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}
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}
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#ifdef HAVE_SELECT
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if (flags & JIM_FILE_EVENTS) {
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int retval;
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struct timeval tv, *tvp = NULL;
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fd_set rfds, wfds, efds;
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int maxfd = -1;
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FD_ZERO(&rfds);
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FD_ZERO(&wfds);
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FD_ZERO(&efds);
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/* Check file events */
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while (fe != NULL) {
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int fd = fileno(fe->handle);
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if (fe->mask & JIM_EVENT_READABLE)
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FD_SET(fd, &rfds);
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if (fe->mask & JIM_EVENT_WRITABLE)
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FD_SET(fd, &wfds);
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if (fe->mask & JIM_EVENT_EXCEPTION)
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FD_SET(fd, &efds);
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if (maxfd < fd)
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maxfd = fd;
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fe = fe->next;
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}
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if (sleep_ms >= 0) {
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tvp = &tv;
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tvp->tv_sec = sleep_ms / 1000;
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tvp->tv_usec = 1000 * (sleep_ms % 1000);
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}
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retval = select(maxfd + 1, &rfds, &wfds, &efds, tvp);
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if (retval < 0) {
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if (errno == EINVAL) {
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/* This can happen on mingw32 if a non-socket filehandle is passed */
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Jim_SetResultString(interp, "non-waitable filehandle", -1);
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return -2;
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}
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/* XXX: What about EINTR? */
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}
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else if (retval > 0) {
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fe = eventLoop->fileEventHead;
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while (fe != NULL) {
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int fd = fileno(fe->handle);
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int mask = 0;
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if ((fe->mask & JIM_EVENT_READABLE) && FD_ISSET(fd, &rfds))
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mask |= JIM_EVENT_READABLE;
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if (fe->mask & JIM_EVENT_WRITABLE && FD_ISSET(fd, &wfds))
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mask |= JIM_EVENT_WRITABLE;
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if (fe->mask & JIM_EVENT_EXCEPTION && FD_ISSET(fd, &efds))
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mask |= JIM_EVENT_EXCEPTION;
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if (mask) {
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if (fe->fileProc(interp, fe->clientData, mask) != JIM_OK) {
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/* Remove the element on handler error */
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Jim_DeleteFileHandler(interp, fe->handle);
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}
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processed++;
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/* After an event is processed our file event list
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* may no longer be the same, so what we do
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* is to clear the bit for this file descriptor and
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* restart again from the head. */
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fe = eventLoop->fileEventHead;
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FD_CLR(fd, &rfds);
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FD_CLR(fd, &wfds);
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FD_CLR(fd, &efds);
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}
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else {
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fe = fe->next;
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}
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}
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}
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}
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#else
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if (sleep_ms > 0) {
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msleep(sleep_ms);
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}
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#endif
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/* Check time events */
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te = eventLoop->timeEventHead;
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maxId = eventLoop->timeEventNextId - 1;
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while (te) {
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long now_sec, now_ms;
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jim_wide id;
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if (te->id > maxId) {
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te = te->next;
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continue;
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}
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JimGetTime(&now_sec, &now_ms);
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if (now_sec > te->when_sec || (now_sec == te->when_sec && now_ms >= te->when_ms)) {
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id = te->id;
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/* Remove from the list before executing */
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Jim_RemoveTimeHandler(eventLoop, id);
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te->timeProc(interp, te->clientData);
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/* After an event is processed our time event list may
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* no longer be the same, so we restart from head.
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* Still we make sure to don't process events registered
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* by event handlers itself in order to don't loop forever
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* even in case an [after 0] that continuously register
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* itself. To do so we saved the max ID we want to handle. */
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Jim_FreeTimeHandler(interp, te);
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te = eventLoop->timeEventHead;
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processed++;
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}
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else {
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te = te->next;
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}
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}
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return processed;
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}
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/* ---------------------------------------------------------------------- */
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static void JimELAssocDataDeleProc(Jim_Interp *interp, void *data)
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{
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void *next;
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Jim_FileEvent *fe;
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Jim_TimeEvent *te;
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Jim_EventLoop *eventLoop = data;
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fe = eventLoop->fileEventHead;
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while (fe) {
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next = fe->next;
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if (fe->finalizerProc)
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fe->finalizerProc(interp, fe->clientData);
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Jim_Free(fe);
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fe = next;
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}
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te = eventLoop->timeEventHead;
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while (te) {
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next = te->next;
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if (te->finalizerProc)
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te->finalizerProc(interp, te->clientData);
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Jim_Free(te);
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te = next;
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}
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Jim_Free(data);
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}
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static int JimELVwaitCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
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{
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Jim_EventLoop *eventLoop = Jim_CmdPrivData(interp);
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Jim_Obj *oldValue;
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int rc;
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if (argc != 2) {
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Jim_WrongNumArgs(interp, 1, argv, "name");
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return JIM_ERR;
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}
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oldValue = Jim_GetGlobalVariable(interp, argv[1], JIM_NONE);
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if (oldValue) {
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Jim_IncrRefCount(oldValue);
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}
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else {
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/* If a result was left, it is an error */
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int len;
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Jim_GetString(interp->result, &len);
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if (len) {
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return JIM_ERR;
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}
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}
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eventLoop->suppress_bgerror = 0;
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while ((rc = Jim_ProcessEvents(interp, JIM_ALL_EVENTS)) >= 0) {
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Jim_Obj *currValue;
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currValue = Jim_GetGlobalVariable(interp, argv[1], JIM_NONE);
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/* Stop the loop if the vwait-ed variable changed value,
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* or if was unset and now is set (or the contrary). */
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if ((oldValue && !currValue) ||
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(!oldValue && currValue) ||
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(oldValue && currValue && !Jim_StringEqObj(oldValue, currValue)))
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break;
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}
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if (oldValue)
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Jim_DecrRefCount(interp, oldValue);
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if (rc == -2) {
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return JIM_ERR;
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}
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Jim_SetEmptyResult(interp);
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return JIM_OK;
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}
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static int JimELUpdateCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
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{
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Jim_EventLoop *eventLoop = Jim_CmdPrivData(interp);
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static const char * const options[] = {
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"idletasks", NULL
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};
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enum { UPDATE_IDLE, UPDATE_NONE };
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int option = UPDATE_NONE;
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int flags = JIM_TIME_EVENTS;
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if (argc == 1) {
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flags = JIM_ALL_EVENTS;
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}
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else if (argc > 2 || Jim_GetEnum(interp, argv[1], options, &option, NULL, JIM_ERRMSG | JIM_ENUM_ABBREV) != JIM_OK) {
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Jim_WrongNumArgs(interp, 1, argv, "?idletasks?");
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return JIM_ERR;
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}
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eventLoop->suppress_bgerror = 0;
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while (Jim_ProcessEvents(interp, flags | JIM_DONT_WAIT) > 0) {
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}
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return JIM_OK;
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}
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static void JimAfterTimeHandler(Jim_Interp *interp, void *clientData)
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{
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Jim_Obj *objPtr = clientData;
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Jim_EvalObjBackground(interp, objPtr);
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}
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static void JimAfterTimeEventFinalizer(Jim_Interp *interp, void *clientData)
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{
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Jim_Obj *objPtr = clientData;
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Jim_DecrRefCount(interp, objPtr);
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}
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static int JimELAfterCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
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{
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Jim_EventLoop *eventLoop = Jim_CmdPrivData(interp);
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jim_wide ms = 0, id;
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Jim_Obj *objPtr, *idObjPtr;
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static const char * const options[] = {
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"cancel", "info", "idle", NULL
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};
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enum
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{ AFTER_CANCEL, AFTER_INFO, AFTER_IDLE, AFTER_RESTART, AFTER_EXPIRE, AFTER_CREATE };
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int option = AFTER_CREATE;
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if (argc < 2) {
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Jim_WrongNumArgs(interp, 1, argv, "option ?arg ...?");
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return JIM_ERR;
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}
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if (Jim_GetWide(interp, argv[1], &ms) != JIM_OK) {
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if (Jim_GetEnum(interp, argv[1], options, &option, "argument", JIM_ERRMSG) != JIM_OK) {
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return JIM_ERR;
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}
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Jim_SetEmptyResult(interp);
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}
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else if (argc == 2) {
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/* Simply a sleep */
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msleep(ms);
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return JIM_OK;
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}
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switch (option) {
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case AFTER_IDLE:
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if (argc < 3) {
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Jim_WrongNumArgs(interp, 2, argv, "script ?script ...?");
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return JIM_ERR;
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}
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/* fall through */
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case AFTER_CREATE: {
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Jim_Obj *scriptObj = Jim_ConcatObj(interp, argc - 2, argv + 2);
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Jim_IncrRefCount(scriptObj);
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id = Jim_CreateTimeHandler(interp, ms, JimAfterTimeHandler, scriptObj,
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JimAfterTimeEventFinalizer);
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objPtr = Jim_NewStringObj(interp, NULL, 0);
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Jim_AppendString(interp, objPtr, "after#", -1);
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idObjPtr = Jim_NewIntObj(interp, id);
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Jim_IncrRefCount(idObjPtr);
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Jim_AppendObj(interp, objPtr, idObjPtr);
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Jim_DecrRefCount(interp, idObjPtr);
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Jim_SetResult(interp, objPtr);
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return JIM_OK;
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}
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case AFTER_CANCEL:
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if (argc < 3) {
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Jim_WrongNumArgs(interp, 2, argv, "id|command");
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return JIM_ERR;
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}
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else {
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jim_wide remain = 0;
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id = JimParseAfterId(argv[2]);
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if (id < 0) {
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/* Not an event id, so search by script */
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Jim_Obj *scriptObj = Jim_ConcatObj(interp, argc - 2, argv + 2);
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id = JimFindAfterByScript(eventLoop, scriptObj);
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Jim_FreeNewObj(interp, scriptObj);
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if (id < 0) {
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/* Not found */
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break;
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}
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}
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remain = Jim_DeleteTimeHandler(interp, id);
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if (remain >= 0) {
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Jim_SetResultInt(interp, remain);
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}
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}
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break;
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case AFTER_INFO:
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if (argc == 2) {
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Jim_TimeEvent *te = eventLoop->timeEventHead;
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Jim_Obj *listObj = Jim_NewListObj(interp, NULL, 0);
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char buf[30];
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const char *fmt = "after#%" JIM_WIDE_MODIFIER;
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while (te) {
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snprintf(buf, sizeof(buf), fmt, te->id);
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Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, buf, -1));
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te = te->next;
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}
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Jim_SetResult(interp, listObj);
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}
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else if (argc == 3) {
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id = JimParseAfterId(argv[2]);
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if (id >= 0) {
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Jim_TimeEvent *e = JimFindTimeHandlerById(eventLoop, id);
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if (e && e->timeProc == JimAfterTimeHandler) {
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Jim_Obj *listObj = Jim_NewListObj(interp, NULL, 0);
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Jim_ListAppendElement(interp, listObj, e->clientData);
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Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, e->initialms ? "timer" : "idle", -1));
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Jim_SetResult(interp, listObj);
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return JIM_OK;
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}
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}
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Jim_SetResultFormatted(interp, "event \"%#s\" doesn't exist", argv[2]);
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return JIM_ERR;
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}
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else {
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Jim_WrongNumArgs(interp, 2, argv, "?id?");
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return JIM_ERR;
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}
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break;
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}
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return JIM_OK;
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}
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int Jim_eventloopInit(Jim_Interp *interp)
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{
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Jim_EventLoop *eventLoop;
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if (Jim_PackageProvide(interp, "eventloop", "1.0", JIM_ERRMSG))
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return JIM_ERR;
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eventLoop = Jim_Alloc(sizeof(*eventLoop));
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eventLoop->fileEventHead = NULL;
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eventLoop->timeEventHead = NULL;
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eventLoop->timeEventNextId = 1;
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eventLoop->suppress_bgerror = 0;
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Jim_SetAssocData(interp, "eventloop", JimELAssocDataDeleProc, eventLoop);
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Jim_CreateCommand(interp, "vwait", JimELVwaitCommand, eventLoop, NULL);
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Jim_CreateCommand(interp, "update", JimELUpdateCommand, eventLoop, NULL);
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Jim_CreateCommand(interp, "after", JimELAfterCommand, eventLoop, NULL);
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return JIM_OK;
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}
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