- added svn props for newly added files

git-svn-id: svn://svn.berlios.de/openocd/trunk@899 b42882b7-edfa-0310-969c-e2dbd0fdcd60

1 files changed, 545 insertions, 545 deletions

diff --git a/src/helper/jim-eventloop.c b/src/helper/jim-eventloop.c
index c3c49d4..7858842 100644
--- a/src/helper/jim-eventloop.c
+++ b/src/helper/jim-eventloop.c
@@ -1,545 +1,545 @@
-/* Jim - A small embeddable Tcl interpreter

- *

- * Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>

- * Copyright 2005 Clemens Hintze <c.hintze@gmx.net>

- * Copyright 2005 patthoyts - Pat Thoyts <patthoyts@users.sf.net> 

- * Copyright 2008 oharboe - Øyvind Harboe - oyvind.harboe@zylin.com

- * Copyright 2008 Andrew Lunn <andrew@lunn.ch>

- * Copyright 2008 Duane Ellis <openocd@duaneellis.com>

- * Copyright 2008 Uwe Klein <uklein@klein-messgeraete.de>

- * 

- * The FreeBSD license

- * 

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions

- * are met:

- * 

- * 1. Redistributions of source code must retain the above copyright

- *    notice, this list of conditions and the following disclaimer.

- * 2. Redistributions in binary form must reproduce the above

- *    copyright notice, this list of conditions and the following

- *    disclaimer in the documentation and/or other materials

- *    provided with the distribution.

- * 

- * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY

- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

- * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF

- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

- * 

- * The views and conclusions contained in the software and documentation

- * are those of the authors and should not be interpreted as representing

- * official policies, either expressed or implied, of the Jim Tcl Project.

- **/

-/* TODO:

- *

- *  - to really use flags in Jim_ProcessEvents()

- *  - more complete [after] command with [after info] and other subcommands.

- *  - Win32 port

- */

-

-#define JIM_EXTENSION

-#define __JIM_EVENTLOOP_CORE__

-#ifdef __ECOS

-#include <pkgconf/jimtcl.h>

-#endif

-#ifdef __ECOS

-#include <cyg/jimtcl/jim.h>

-#include <cyg/jimtcl/jim-eventloop.h>

-#else

-#include "jim.h"

-#include "jim-eventloop.h"

-#endif

-

-/* POSIX includes */

-#include <sys/time.h>

-#include <sys/types.h>

-#include <unistd.h>

-#include <sys/select.h>

-#include <errno.h>

-	extern int errno;

-/* --- */

-

-/* File event structure */

-typedef struct Jim_FileEvent {

-    void *handle;

-    int mask; /* one of JIM_EVENT_(READABLE|WRITABLE|EXCEPTION) */

-    Jim_FileProc *fileProc;

-    Jim_EventFinalizerProc *finalizerProc;

-    void *clientData;

-    struct Jim_FileEvent *next;

-} Jim_FileEvent;

-

-/* Time event structure */

-typedef struct Jim_TimeEvent {

-    jim_wide id; /* time event identifier. */

-    int mode;	/* restart, repetitive .. UK */

-    long initialms; /* initial relativ timer value UK */

-    long when_sec; /* seconds */

-    long when_ms; /* milliseconds */

-    Jim_TimeProc *timeProc;

-    Jim_EventFinalizerProc *finalizerProc;

-    void *clientData;

-    struct Jim_TimeEvent *next;

-} Jim_TimeEvent;

-

-/* Per-interp stucture containing the state of the event loop */

-typedef struct Jim_EventLoop {

-    jim_wide timeEventNextId;

-    Jim_FileEvent *fileEventHead;

-    Jim_TimeEvent *timeEventHead;

-} Jim_EventLoop;

-

-void Jim_CreateFileHandler(Jim_Interp *interp, void *handle, int mask,

-        Jim_FileProc *proc, void *clientData,

-        Jim_EventFinalizerProc *finalizerProc)

-{

-    Jim_FileEvent *fe;

-    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");

-

-	// fprintf(stderr,"rein\n");

-    fe = Jim_Alloc(sizeof(*fe));

-    fe->handle = handle;

-    fe->mask = mask;

-    fe->fileProc = proc;

-    fe->finalizerProc = finalizerProc;

-    fe->clientData = clientData;

-    fe->next = eventLoop->fileEventHead;

-    eventLoop->fileEventHead = fe;

-	// fprintf(stderr,"raus\n");

-}

-

-void Jim_DeleteFileHandler(Jim_Interp *interp, void *handle)

-{

-    Jim_FileEvent *fe, *prev = NULL;

-    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");

-

-    fe = eventLoop->fileEventHead;

-    while(fe) {

-        if (fe->handle == handle) {

-            if (prev == NULL)

-                eventLoop->fileEventHead = fe->next;

-            else

-                prev->next = fe->next;

-            if (fe->finalizerProc)

-                fe->finalizerProc(interp, fe->clientData);

-            Jim_Free(fe);

-            return;

-        }

-        prev = fe;

-        fe = fe->next;

-    }

-}

-

-// The same for signals.

-void Jim_CreateSignalHandler(Jim_Interp *interp, int signum, 

-        Jim_FileProc *proc, void *clientData,

-        Jim_EventFinalizerProc *finalizerProc)

-{

-}

-void Jim_DeleteSignalHandler(Jim_Interp *interp, int signum) 

-{

-}

-

-/* That's another part of this extension that needs to be ported

- * to WIN32. */

-static void JimGetTime(long *seconds, long *milliseconds)

-{

-    struct timeval tv;

-

-    gettimeofday(&tv, NULL);

-    *seconds = tv.tv_sec;

-    *milliseconds = tv.tv_usec/1000;

-}

-

-jim_wide Jim_CreateTimeHandler(Jim_Interp *interp, jim_wide milliseconds,

-        Jim_TimeProc *proc, void *clientData,

-        Jim_EventFinalizerProc *finalizerProc)

-{

-    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");

-    jim_wide id = eventLoop->timeEventNextId++;

-    Jim_TimeEvent *te;

-    long cur_sec, cur_ms;

-

-    JimGetTime(&cur_sec, &cur_ms);

-

-    te = Jim_Alloc(sizeof(*te));

-    te->id = id;

-    te->mode = 0;

-    te->initialms = milliseconds;

-    te->when_sec = cur_sec + milliseconds/1000;

-    te->when_ms = cur_ms + milliseconds%1000;

-    if (te->when_ms >= 1000) {

-        te->when_sec ++;

-        te->when_ms -= 1000;

-    }

-    te->timeProc = proc;

-    te->finalizerProc = finalizerProc;

-    te->clientData = clientData;

-    te->next = eventLoop->timeEventHead;

-    eventLoop->timeEventHead = te;

-    return id;

-}

-

-jim_wide Jim_DeleteTimeHandler(Jim_Interp *interp, jim_wide id)

-{

-    Jim_TimeEvent *te, *prev = NULL;

-    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");

-    long cur_sec, cur_ms;

-    jim_wide remain ;

-

-    JimGetTime(&cur_sec, &cur_ms);

-

-    te = eventLoop->timeEventHead;

-    if (id >= eventLoop->timeEventNextId) 

-    	return -2; /* wrong event ID */

-    while(te) {

-        if (te->id == id) {

-            remain  = (te->when_sec - cur_sec) * 1000;

-            remain += (te->when_ms  - cur_ms) ;

-	    remain = (remain < 0) ? 0 : remain ;

-

-            if (prev == NULL)

-                eventLoop->timeEventHead = te->next;

-            else

-                prev->next = te->next;

-            if (te->finalizerProc)

-                te->finalizerProc(interp, te->clientData);

-            Jim_Free(te);

-            return remain;

-        }

-        prev = te;

-        te = te->next;

-    }

-    return -1; /* NO event with the specified ID found */

-}

-

-/* Search the first timer to fire.

- * This operation is useful to know how many time the select can be

- * put in sleep without to delay any event.

- * If there are no timers NULL is returned. */

-static Jim_TimeEvent *JimSearchNearestTimer(Jim_EventLoop *eventLoop)

-{

-    Jim_TimeEvent *te = eventLoop->timeEventHead;

-    Jim_TimeEvent *nearest = NULL;

-

-    while(te) {

-        if (!nearest || te->when_sec < nearest->when_sec ||

-                (te->when_sec == nearest->when_sec &&

-                 te->when_ms < nearest->when_ms))

-            nearest = te;

-        te = te->next;

-    }

-    return nearest;

-}

-

-/* Process every pending time event, then every pending file event

- * (that may be registered by time event callbacks just processed).

- * Without special flags the function sleeps until some file event

- * fires, or when the next time event occurrs (if any).

- *

- * If flags is 0, the function does nothing and returns.

- * if flags has JIM_ALL_EVENTS set, all the kind of events are processed.

- * if flags has JIM_FILE_EVENTS set, file events are processed.

- * if flags has JIM_TIME_EVENTS set, time events are processed.

- * if flags has JIM_DONT_WAIT set the function returns ASAP until all

- * the events that's possible to process without to wait are processed.

- *

- * The function returns the number of events processed. */

-int Jim_ProcessEvents(Jim_Interp *interp, int flags)

-{

-    int maxfd = 0, numfd = 0, processed = 0;

-    fd_set rfds, wfds, efds;

-    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");

-    Jim_FileEvent *fe = eventLoop->fileEventHead;

-    Jim_TimeEvent *te;

-    jim_wide maxId;

-    JIM_NOTUSED(flags);

-

-    FD_ZERO(&rfds);

-    FD_ZERO(&wfds);

-    FD_ZERO(&efds);

-

-    /* Check file events */

-    while (fe != NULL) {

-        int fd = fileno(fe->handle);

-

-        if (fe->mask & JIM_EVENT_READABLE) 

-		FD_SET(fd, &rfds);

-        if (fe->mask & JIM_EVENT_WRITABLE) FD_SET(fd, &wfds);

-        if (fe->mask & JIM_EVENT_EXCEPTION) FD_SET(fd, &efds);

-        if (maxfd < fd) maxfd = fd;

-        numfd++;

-        fe = fe->next;

-    }

-    /* Note that we want call select() even if there are no

-     * file events to process as long as we want to process time

-     * events, in order to sleep until the next time event is ready

-     * to fire. */

-    if (numfd || ((flags & JIM_TIME_EVENTS) && !(flags & JIM_DONT_WAIT))) {

-        int retval;

-        Jim_TimeEvent *shortest;

-        struct timeval tv, *tvp;

-	jim_wide dt;

-

-        shortest = JimSearchNearestTimer(eventLoop);

-        if (shortest) {

-            long now_sec, now_ms;

-

-            /* Calculate the time missing for the nearest

-             * timer to fire. */

-            JimGetTime(&now_sec, &now_ms);

-            tvp = &tv;

-	    dt   = 1000 * (shortest->when_sec - now_sec);

-	    dt  += ( shortest->when_ms  - now_ms);

-            if (dt < 0) {

-		dt = 1;

-	    }

-	    tvp->tv_sec  = dt / 1000;

-	    tvp->tv_usec = dt % 1000;

-	    // fprintf(stderr,"Next %d.% 8d\n",(int)tvp->tv_sec,(int)tvp->tv_usec);

-        } else {

-            tvp = NULL; /* wait forever */

-		// fprintf(stderr,"No Event\n");

-        }

-

-        retval = select(maxfd+1, &rfds, &wfds, &efds, tvp);

-        if (retval < 0) {

-	   switch (errno) {

-	       case EINTR:   fprintf(stderr,"select EINTR\n"); break;

-	       case EINVAL:  fprintf(stderr,"select EINVAL\n"); break;

- 	       case ENOMEM:  fprintf(stderr,"select ENOMEM\n"); break;

-	   }

-	} else if (retval > 0) {

-            fe = eventLoop->fileEventHead;

-            while(fe != NULL) {

-                int fd = fileno(fe->handle);

-

-		// fprintf(stderr,"fd: %d mask: %02x \n",fd,fe->mask);

-

-                if ((fe->mask & JIM_EVENT_READABLE && FD_ISSET(fd, &rfds)) ||

-                    (fe->mask & JIM_EVENT_WRITABLE && FD_ISSET(fd, &wfds)) ||

-                    (fe->mask & JIM_EVENT_EXCEPTION && FD_ISSET(fd, &efds)))

-                {

-                    int mask = 0;

-

-                    if (fe->mask & JIM_EVENT_READABLE && FD_ISSET(fd, &rfds)) {

-                        mask |= JIM_EVENT_READABLE;

-			if ((fe->mask & JIM_EVENT_FEOF) && feof((FILE *)fe->handle))

-				mask |= JIM_EVENT_FEOF;

-		    }

-                    if (fe->mask & JIM_EVENT_WRITABLE && FD_ISSET(fd, &wfds))

-                        mask |= JIM_EVENT_WRITABLE;

-                    if (fe->mask & JIM_EVENT_EXCEPTION && FD_ISSET(fd, &efds))

-                        mask |= JIM_EVENT_EXCEPTION;

-                    if (fe->fileProc(interp, fe->clientData, mask) == JIM_ERR) {

-                        /* Remove the element on handler error */

-                        Jim_DeleteFileHandler(interp, fe->handle);

-                    }

-                    processed++;

-                    /* After an event is processed our file event list

-                     * may no longer be the same, so what we do

-                     * is to clear the bit for this file descriptor and

-                     * restart again from the head. */

-                    fe = eventLoop->fileEventHead;

-                    FD_CLR(fd, &rfds);

-                    FD_CLR(fd, &wfds);

-                    FD_CLR(fd, &efds);

-                } else {

-                    fe = fe->next;

-                }

-            }

-        }

-    }

-    /* Check time events */

-    te = eventLoop->timeEventHead;

-    maxId = eventLoop->timeEventNextId-1;

-    while(te) {

-        long now_sec, now_ms;

-        jim_wide id;

-

-        if (te->id > maxId) {

-            te = te->next;

-            continue;

-        }

-        JimGetTime(&now_sec, &now_ms);

-        if (now_sec > te->when_sec ||

-            (now_sec == te->when_sec && now_ms >= te->when_ms))

-        {

-            id = te->id;

-            te->timeProc(interp, te->clientData);

-            /* After an event is processed our time event list may

-             * no longer be the same, so we restart from head.

-             * Still we make sure to don't process events registered

-             * by event handlers itself in order to don't loop forever

-             * even in case an [after 0] that continuously register

-             * itself. To do so we saved the max ID we want to handle. */

-            Jim_DeleteTimeHandler(interp, id);

-            te = eventLoop->timeEventHead;

-        } else {

-            te = te->next;

-        }

-    }

-

-    return processed;

-}

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

-

-void JimELAssocDataDeleProc(Jim_Interp *interp, void *data)

-{

-    void *next;

-    Jim_FileEvent *fe;

-    Jim_TimeEvent *te;

-    Jim_EventLoop *eventLoop = data;

-

-    fe = eventLoop->fileEventHead;

-    while(fe) {

-        next = fe->next;

-        if (fe->finalizerProc)

-            fe->finalizerProc(interp, fe->clientData);

-        Jim_Free(fe);

-        fe = next;

-    }

-

-    te = eventLoop->timeEventHead;

-    while(te) {

-        next = te->next;

-        if (te->finalizerProc)

-            te->finalizerProc(interp, te->clientData);

-        Jim_Free(te);

-        te = next;

-    }

-    Jim_Free(data);

-}

-

-static int JimELVwaitCommand(Jim_Interp *interp, int argc, 

-        Jim_Obj *const *argv)

-{

-    Jim_Obj *oldValue;

-

-    if (argc != 2) {

-        Jim_WrongNumArgs(interp, 1, argv, "name");

-        return JIM_ERR;

-    }

-    oldValue = Jim_GetGlobalVariable(interp, argv[1], JIM_NONE);

-    if (oldValue) Jim_IncrRefCount(oldValue);

-    while (1) {

-        Jim_Obj *currValue;

-

-        Jim_ProcessEvents(interp, JIM_ALL_EVENTS);

-        currValue = Jim_GetGlobalVariable(interp, argv[1], JIM_NONE);

-        /* Stop the loop if the vwait-ed variable changed value,

-         * or if was unset and now is set (or the contrary). */

-        if ((oldValue && !currValue) ||

-            (!oldValue && currValue) ||

-            (oldValue && currValue &&

-             !Jim_StringEqObj(oldValue, currValue, JIM_CASESENS)))

-            break;

-    }

-    if (oldValue) Jim_DecrRefCount(interp, oldValue);

-    return JIM_OK;

-}

-

-void JimAfterTimeHandler(Jim_Interp *interp, void *clientData)

-{

-    Jim_Obj *objPtr = clientData;

-

-    Jim_EvalObjBackground(interp, objPtr);

-}

-

-void JimAfterTimeEventFinalizer(Jim_Interp *interp, void *clientData)

-{

-    Jim_Obj *objPtr = clientData;

-

-    Jim_DecrRefCount(interp, objPtr);

-}

-

-static int JimELAfterCommand(Jim_Interp *interp, int argc, 

-        Jim_Obj *const *argv)

-{

-    jim_wide ms, id;

-    Jim_Obj *objPtr, *idObjPtr;

-    const char *options[] = {

-	"info", "cancel", "restart", "expire", NULL

-    };

-    enum {INFO, CANCEL, RESTART, EXPIRE, CREATE };

-    int option = CREATE ;

-

-    if (argc < 3) {

-        Jim_WrongNumArgs(interp, 1, argv, "<after milliseconds> script");

-        return JIM_ERR;

-    }

-    if (Jim_GetWide(interp, argv[1], &ms) != JIM_OK)

-        if (Jim_GetEnum(interp, argv[1], options, &option, "after options",

-                    JIM_ERRMSG) != JIM_OK)

-            return JIM_ERR;

-    switch (option) {

-    case CREATE:

-        Jim_IncrRefCount(argv[2]);

-        id = Jim_CreateTimeHandler(interp, ms, JimAfterTimeHandler, argv[2],

-                JimAfterTimeEventFinalizer);

-        objPtr = Jim_NewStringObj(interp, NULL, 0);

-        Jim_AppendString(interp, objPtr, "after#", -1);

-        idObjPtr = Jim_NewIntObj(interp, id);

-        Jim_IncrRefCount(idObjPtr);

-        Jim_AppendObj(interp, objPtr, idObjPtr);

-        Jim_DecrRefCount(interp, idObjPtr);

-        Jim_SetResult(interp, objPtr);

-        return JIM_OK;

-    case CANCEL:

-	{

-	int tlen ;

-	jim_wide remain = 0;

-	const char *tok = Jim_GetString(argv[2], &tlen);

-	if ( sscanf(tok,"after#%lld",&id) == 1) {

-		remain =  Jim_DeleteTimeHandler(interp, id);

-		if (remain > -2)  {

-			Jim_SetResult(interp, Jim_NewIntObj(interp, remain));

-			return JIM_OK;

-		}

-	}

-        Jim_SetResultString(interp, "invalid event" , -1);

-        return JIM_ERR;

-	}

-    default:

-	fprintf(stderr,"unserviced option to after %d\n",option);

-    } 

-    return JIM_OK;

-}

-

-/* This extension is not dynamically loaded, instead it's linked statically,

-   which is why we shouldn't use the unspecific 'Jim_OnLoad' name */

-#define Jim_OnLoad Jim_EventLoopOnLoad

-

-int Jim_OnLoad(Jim_Interp *interp)

-{

-    Jim_EventLoop *eventLoop;

-

-    Jim_InitExtension(interp);

-    if (Jim_PackageProvide(interp, "eventloop", "1.0", JIM_ERRMSG) != JIM_OK)

-        return JIM_ERR;

-

-    eventLoop = Jim_Alloc(sizeof(*eventLoop));

-    eventLoop->fileEventHead = NULL;

-    eventLoop->timeEventHead = NULL;

-    eventLoop->timeEventNextId = 1;

-    Jim_SetAssocData(interp, "eventloop", JimELAssocDataDeleProc, eventLoop);

-

-    Jim_CreateCommand(interp, "vwait", JimELVwaitCommand, NULL, NULL);

-    Jim_CreateCommand(interp, "after", JimELAfterCommand, NULL, NULL);

-

-    /* Export events API */

-    Jim_RegisterApi(interp, "Jim_CreateFileHandler", Jim_CreateFileHandler);

-    Jim_RegisterApi(interp, "Jim_DeleteFileHandler", Jim_DeleteFileHandler);

-    Jim_RegisterApi(interp, "Jim_CreateTimeHandler", Jim_CreateTimeHandler);

-    Jim_RegisterApi(interp, "Jim_DeleteTimeHandler", Jim_DeleteTimeHandler);

-    Jim_RegisterApi(interp, "Jim_ProcessEvents", Jim_ProcessEvents);

-    return JIM_OK;

-}

+/* Jim - A small embeddable Tcl interpreter
+ *
+ * Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>
+ * Copyright 2005 Clemens Hintze <c.hintze@gmx.net>
+ * Copyright 2005 patthoyts - Pat Thoyts <patthoyts@users.sf.net> 
+ * Copyright 2008 oharboe - Øyvind Harboe - oyvind.harboe@zylin.com
+ * Copyright 2008 Andrew Lunn <andrew@lunn.ch>
+ * Copyright 2008 Duane Ellis <openocd@duaneellis.com>
+ * Copyright 2008 Uwe Klein <uklein@klein-messgeraete.de>
+ * 
+ * The FreeBSD license
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation
+ * are those of the authors and should not be interpreted as representing
+ * official policies, either expressed or implied, of the Jim Tcl Project.
+ **/
+/* TODO:
+ *
+ *  - to really use flags in Jim_ProcessEvents()
+ *  - more complete [after] command with [after info] and other subcommands.
+ *  - Win32 port
+ */
+
+#define JIM_EXTENSION
+#define __JIM_EVENTLOOP_CORE__
+#ifdef __ECOS
+#include <pkgconf/jimtcl.h>
+#endif
+#ifdef __ECOS
+#include <cyg/jimtcl/jim.h>
+#include <cyg/jimtcl/jim-eventloop.h>
+#else
+#include "jim.h"
+#include "jim-eventloop.h"
+#endif
+
+/* POSIX includes */
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <errno.h>
+	extern int errno;
+/* --- */
+
+/* File event structure */
+typedef struct Jim_FileEvent {
+    void *handle;
+    int mask; /* one of JIM_EVENT_(READABLE|WRITABLE|EXCEPTION) */
+    Jim_FileProc *fileProc;
+    Jim_EventFinalizerProc *finalizerProc;
+    void *clientData;
+    struct Jim_FileEvent *next;
+} Jim_FileEvent;
+
+/* Time event structure */
+typedef struct Jim_TimeEvent {
+    jim_wide id; /* time event identifier. */
+    int mode;	/* restart, repetitive .. UK */
+    long initialms; /* initial relativ timer value UK */
+    long when_sec; /* seconds */
+    long when_ms; /* milliseconds */
+    Jim_TimeProc *timeProc;
+    Jim_EventFinalizerProc *finalizerProc;
+    void *clientData;
+    struct Jim_TimeEvent *next;
+} Jim_TimeEvent;
+
+/* Per-interp stucture containing the state of the event loop */
+typedef struct Jim_EventLoop {
+    jim_wide timeEventNextId;
+    Jim_FileEvent *fileEventHead;
+    Jim_TimeEvent *timeEventHead;
+} Jim_EventLoop;
+
+void Jim_CreateFileHandler(Jim_Interp *interp, void *handle, int mask,
+        Jim_FileProc *proc, void *clientData,
+        Jim_EventFinalizerProc *finalizerProc)
+{
+    Jim_FileEvent *fe;
+    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
+
+	// fprintf(stderr,"rein\n");
+    fe = Jim_Alloc(sizeof(*fe));
+    fe->handle = handle;
+    fe->mask = mask;
+    fe->fileProc = proc;
+    fe->finalizerProc = finalizerProc;
+    fe->clientData = clientData;
+    fe->next = eventLoop->fileEventHead;
+    eventLoop->fileEventHead = fe;
+	// fprintf(stderr,"raus\n");
+}
+
+void Jim_DeleteFileHandler(Jim_Interp *interp, void *handle)
+{
+    Jim_FileEvent *fe, *prev = NULL;
+    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
+
+    fe = eventLoop->fileEventHead;
+    while(fe) {
+        if (fe->handle == handle) {
+            if (prev == NULL)
+                eventLoop->fileEventHead = fe->next;
+            else
+                prev->next = fe->next;
+            if (fe->finalizerProc)
+                fe->finalizerProc(interp, fe->clientData);
+            Jim_Free(fe);
+            return;
+        }
+        prev = fe;
+        fe = fe->next;
+    }
+}
+
+// The same for signals.
+void Jim_CreateSignalHandler(Jim_Interp *interp, int signum, 
+        Jim_FileProc *proc, void *clientData,
+        Jim_EventFinalizerProc *finalizerProc)
+{
+}
+void Jim_DeleteSignalHandler(Jim_Interp *interp, int signum) 
+{
+}
+
+/* That's another part of this extension that needs to be ported
+ * to WIN32. */
+static void JimGetTime(long *seconds, long *milliseconds)
+{
+    struct timeval tv;
+
+    gettimeofday(&tv, NULL);
+    *seconds = tv.tv_sec;
+    *milliseconds = tv.tv_usec/1000;
+}
+
+jim_wide Jim_CreateTimeHandler(Jim_Interp *interp, jim_wide milliseconds,
+        Jim_TimeProc *proc, void *clientData,
+        Jim_EventFinalizerProc *finalizerProc)
+{
+    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
+    jim_wide id = eventLoop->timeEventNextId++;
+    Jim_TimeEvent *te;
+    long cur_sec, cur_ms;
+
+    JimGetTime(&cur_sec, &cur_ms);
+
+    te = Jim_Alloc(sizeof(*te));
+    te->id = id;
+    te->mode = 0;
+    te->initialms = milliseconds;
+    te->when_sec = cur_sec + milliseconds/1000;
+    te->when_ms = cur_ms + milliseconds%1000;
+    if (te->when_ms >= 1000) {
+        te->when_sec ++;
+        te->when_ms -= 1000;
+    }
+    te->timeProc = proc;
+    te->finalizerProc = finalizerProc;
+    te->clientData = clientData;
+    te->next = eventLoop->timeEventHead;
+    eventLoop->timeEventHead = te;
+    return id;
+}
+
+jim_wide Jim_DeleteTimeHandler(Jim_Interp *interp, jim_wide id)
+{
+    Jim_TimeEvent *te, *prev = NULL;
+    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
+    long cur_sec, cur_ms;
+    jim_wide remain ;
+
+    JimGetTime(&cur_sec, &cur_ms);
+
+    te = eventLoop->timeEventHead;
+    if (id >= eventLoop->timeEventNextId) 
+    	return -2; /* wrong event ID */
+    while(te) {
+        if (te->id == id) {
+            remain  = (te->when_sec - cur_sec) * 1000;
+            remain += (te->when_ms  - cur_ms) ;
+	    remain = (remain < 0) ? 0 : remain ;
+
+            if (prev == NULL)
+                eventLoop->timeEventHead = te->next;
+            else
+                prev->next = te->next;
+            if (te->finalizerProc)
+                te->finalizerProc(interp, te->clientData);
+            Jim_Free(te);
+            return remain;
+        }
+        prev = te;
+        te = te->next;
+    }
+    return -1; /* NO event with the specified ID found */
+}
+
+/* Search the first timer to fire.
+ * This operation is useful to know how many time the select can be
+ * put in sleep without to delay any event.
+ * If there are no timers NULL is returned. */
+static Jim_TimeEvent *JimSearchNearestTimer(Jim_EventLoop *eventLoop)
+{
+    Jim_TimeEvent *te = eventLoop->timeEventHead;
+    Jim_TimeEvent *nearest = NULL;
+
+    while(te) {
+        if (!nearest || te->when_sec < nearest->when_sec ||
+                (te->when_sec == nearest->when_sec &&
+                 te->when_ms < nearest->when_ms))
+            nearest = te;
+        te = te->next;
+    }
+    return nearest;
+}
+
+/* Process every pending time event, then every pending file event
+ * (that may be registered by time event callbacks just processed).
+ * Without special flags the function sleeps until some file event
+ * fires, or when the next time event occurrs (if any).
+ *
+ * If flags is 0, the function does nothing and returns.
+ * if flags has JIM_ALL_EVENTS set, all the kind of events are processed.
+ * if flags has JIM_FILE_EVENTS set, file events are processed.
+ * if flags has JIM_TIME_EVENTS set, time events are processed.
+ * if flags has JIM_DONT_WAIT set the function returns ASAP until all
+ * the events that's possible to process without to wait are processed.
+ *
+ * The function returns the number of events processed. */
+int Jim_ProcessEvents(Jim_Interp *interp, int flags)
+{
+    int maxfd = 0, numfd = 0, processed = 0;
+    fd_set rfds, wfds, efds;
+    Jim_EventLoop *eventLoop = Jim_GetAssocData(interp, "eventloop");
+    Jim_FileEvent *fe = eventLoop->fileEventHead;
+    Jim_TimeEvent *te;
+    jim_wide maxId;
+    JIM_NOTUSED(flags);
+
+    FD_ZERO(&rfds);
+    FD_ZERO(&wfds);
+    FD_ZERO(&efds);
+
+    /* Check file events */
+    while (fe != NULL) {
+        int fd = fileno(fe->handle);
+
+        if (fe->mask & JIM_EVENT_READABLE) 
+		FD_SET(fd, &rfds);
+        if (fe->mask & JIM_EVENT_WRITABLE) FD_SET(fd, &wfds);
+        if (fe->mask & JIM_EVENT_EXCEPTION) FD_SET(fd, &efds);
+        if (maxfd < fd) maxfd = fd;
+        numfd++;
+        fe = fe->next;
+    }
+    /* Note that we want call select() even if there are no
+     * file events to process as long as we want to process time
+     * events, in order to sleep until the next time event is ready
+     * to fire. */
+    if (numfd || ((flags & JIM_TIME_EVENTS) && !(flags & JIM_DONT_WAIT))) {
+        int retval;
+        Jim_TimeEvent *shortest;
+        struct timeval tv, *tvp;
+	jim_wide dt;
+
+        shortest = JimSearchNearestTimer(eventLoop);
+        if (shortest) {
+            long now_sec, now_ms;
+
+            /* Calculate the time missing for the nearest
+             * timer to fire. */
+            JimGetTime(&now_sec, &now_ms);
+            tvp = &tv;
+	    dt   = 1000 * (shortest->when_sec - now_sec);
+	    dt  += ( shortest->when_ms  - now_ms);
+            if (dt < 0) {
+		dt = 1;
+	    }
+	    tvp->tv_sec  = dt / 1000;
+	    tvp->tv_usec = dt % 1000;
+	    // fprintf(stderr,"Next %d.% 8d\n",(int)tvp->tv_sec,(int)tvp->tv_usec);
+        } else {
+            tvp = NULL; /* wait forever */
+		// fprintf(stderr,"No Event\n");
+        }
+
+        retval = select(maxfd+1, &rfds, &wfds, &efds, tvp);
+        if (retval < 0) {
+	   switch (errno) {
+	       case EINTR:   fprintf(stderr,"select EINTR\n"); break;
+	       case EINVAL:  fprintf(stderr,"select EINVAL\n"); break;
+ 	       case ENOMEM:  fprintf(stderr,"select ENOMEM\n"); break;
+	   }
+	} else if (retval > 0) {
+            fe = eventLoop->fileEventHead;
+            while(fe != NULL) {
+                int fd = fileno(fe->handle);
+
+		// fprintf(stderr,"fd: %d mask: %02x \n",fd,fe->mask);
+
+                if ((fe->mask & JIM_EVENT_READABLE && FD_ISSET(fd, &rfds)) ||
+                    (fe->mask & JIM_EVENT_WRITABLE && FD_ISSET(fd, &wfds)) ||
+                    (fe->mask & JIM_EVENT_EXCEPTION && FD_ISSET(fd, &efds)))
+                {
+                    int mask = 0;
+
+                    if (fe->mask & JIM_EVENT_READABLE && FD_ISSET(fd, &rfds)) {
+                        mask |= JIM_EVENT_READABLE;
+			if ((fe->mask & JIM_EVENT_FEOF) && feof((FILE *)fe->handle))
+				mask |= JIM_EVENT_FEOF;
+		    }
+                    if (fe->mask & JIM_EVENT_WRITABLE && FD_ISSET(fd, &wfds))
+                        mask |= JIM_EVENT_WRITABLE;
+                    if (fe->mask & JIM_EVENT_EXCEPTION && FD_ISSET(fd, &efds))
+                        mask |= JIM_EVENT_EXCEPTION;
+                    if (fe->fileProc(interp, fe->clientData, mask) == JIM_ERR) {
+                        /* Remove the element on handler error */
+                        Jim_DeleteFileHandler(interp, fe->handle);
+                    }
+                    processed++;
+                    /* After an event is processed our file event list
+                     * may no longer be the same, so what we do
+                     * is to clear the bit for this file descriptor and
+                     * restart again from the head. */
+                    fe = eventLoop->fileEventHead;
+                    FD_CLR(fd, &rfds);
+                    FD_CLR(fd, &wfds);
+                    FD_CLR(fd, &efds);
+                } else {
+                    fe = fe->next;
+                }
+            }
+        }
+    }
+    /* Check time events */
+    te = eventLoop->timeEventHead;
+    maxId = eventLoop->timeEventNextId-1;
+    while(te) {
+        long now_sec, now_ms;
+        jim_wide id;
+
+        if (te->id > maxId) {
+            te = te->next;
+            continue;
+        }
+        JimGetTime(&now_sec, &now_ms);
+        if (now_sec > te->when_sec ||
+            (now_sec == te->when_sec && now_ms >= te->when_ms))
+        {
+            id = te->id;
+            te->timeProc(interp, te->clientData);
+            /* After an event is processed our time event list may
+             * no longer be the same, so we restart from head.
+             * Still we make sure to don't process events registered
+             * by event handlers itself in order to don't loop forever
+             * even in case an [after 0] that continuously register
+             * itself. To do so we saved the max ID we want to handle. */
+            Jim_DeleteTimeHandler(interp, id);
+            te = eventLoop->timeEventHead;
+        } else {
+            te = te->next;
+        }
+    }
+
+    return processed;
+}
+/* ---------------------------------------------------------------------- */
+
+void JimELAssocDataDeleProc(Jim_Interp *interp, void *data)
+{
+    void *next;
+    Jim_FileEvent *fe;
+    Jim_TimeEvent *te;
+    Jim_EventLoop *eventLoop = data;
+
+    fe = eventLoop->fileEventHead;
+    while(fe) {
+        next = fe->next;
+        if (fe->finalizerProc)
+            fe->finalizerProc(interp, fe->clientData);
+        Jim_Free(fe);
+        fe = next;
+    }
+
+    te = eventLoop->timeEventHead;
+    while(te) {
+        next = te->next;
+        if (te->finalizerProc)
+            te->finalizerProc(interp, te->clientData);
+        Jim_Free(te);
+        te = next;
+    }
+    Jim_Free(data);
+}
+
+static int JimELVwaitCommand(Jim_Interp *interp, int argc, 
+        Jim_Obj *const *argv)
+{
+    Jim_Obj *oldValue;
+
+    if (argc != 2) {
+        Jim_WrongNumArgs(interp, 1, argv, "name");
+        return JIM_ERR;
+    }
+    oldValue = Jim_GetGlobalVariable(interp, argv[1], JIM_NONE);
+    if (oldValue) Jim_IncrRefCount(oldValue);
+    while (1) {
+        Jim_Obj *currValue;
+
+        Jim_ProcessEvents(interp, JIM_ALL_EVENTS);
+        currValue = Jim_GetGlobalVariable(interp, argv[1], JIM_NONE);
+        /* Stop the loop if the vwait-ed variable changed value,
+         * or if was unset and now is set (or the contrary). */
+        if ((oldValue && !currValue) ||
+            (!oldValue && currValue) ||
+            (oldValue && currValue &&
+             !Jim_StringEqObj(oldValue, currValue, JIM_CASESENS)))
+            break;
+    }
+    if (oldValue) Jim_DecrRefCount(interp, oldValue);
+    return JIM_OK;
+}
+
+void JimAfterTimeHandler(Jim_Interp *interp, void *clientData)
+{
+    Jim_Obj *objPtr = clientData;
+
+    Jim_EvalObjBackground(interp, objPtr);
+}
+
+void JimAfterTimeEventFinalizer(Jim_Interp *interp, void *clientData)
+{
+    Jim_Obj *objPtr = clientData;
+
+    Jim_DecrRefCount(interp, objPtr);
+}
+
+static int JimELAfterCommand(Jim_Interp *interp, int argc, 
+        Jim_Obj *const *argv)
+{
+    jim_wide ms, id;
+    Jim_Obj *objPtr, *idObjPtr;
+    const char *options[] = {
+	"info", "cancel", "restart", "expire", NULL
+    };
+    enum {INFO, CANCEL, RESTART, EXPIRE, CREATE };
+    int option = CREATE ;
+
+    if (argc < 3) {
+        Jim_WrongNumArgs(interp, 1, argv, "<after milliseconds> script");
+        return JIM_ERR;
+    }
+    if (Jim_GetWide(interp, argv[1], &ms) != JIM_OK)
+        if (Jim_GetEnum(interp, argv[1], options, &option, "after options",
+                    JIM_ERRMSG) != JIM_OK)
+            return JIM_ERR;
+    switch (option) {
+    case CREATE:
+        Jim_IncrRefCount(argv[2]);
+        id = Jim_CreateTimeHandler(interp, ms, JimAfterTimeHandler, argv[2],
+                JimAfterTimeEventFinalizer);
+        objPtr = Jim_NewStringObj(interp, NULL, 0);
+        Jim_AppendString(interp, objPtr, "after#", -1);
+        idObjPtr = Jim_NewIntObj(interp, id);
+        Jim_IncrRefCount(idObjPtr);
+        Jim_AppendObj(interp, objPtr, idObjPtr);
+        Jim_DecrRefCount(interp, idObjPtr);
+        Jim_SetResult(interp, objPtr);
+        return JIM_OK;
+    case CANCEL:
+	{
+	int tlen ;
+	jim_wide remain = 0;
+	const char *tok = Jim_GetString(argv[2], &tlen);
+	if ( sscanf(tok,"after#%lld",&id) == 1) {
+		remain =  Jim_DeleteTimeHandler(interp, id);
+		if (remain > -2)  {
+			Jim_SetResult(interp, Jim_NewIntObj(interp, remain));
+			return JIM_OK;
+		}
+	}
+        Jim_SetResultString(interp, "invalid event" , -1);
+        return JIM_ERR;
+	}
+    default:
+	fprintf(stderr,"unserviced option to after %d\n",option);
+    } 
+    return JIM_OK;
+}
+
+/* This extension is not dynamically loaded, instead it's linked statically,
+   which is why we shouldn't use the unspecific 'Jim_OnLoad' name */
+#define Jim_OnLoad Jim_EventLoopOnLoad
+
+int Jim_OnLoad(Jim_Interp *interp)
+{
+    Jim_EventLoop *eventLoop;
+
+    Jim_InitExtension(interp);
+    if (Jim_PackageProvide(interp, "eventloop", "1.0", JIM_ERRMSG) != JIM_OK)
+        return JIM_ERR;
+
+    eventLoop = Jim_Alloc(sizeof(*eventLoop));
+    eventLoop->fileEventHead = NULL;
+    eventLoop->timeEventHead = NULL;
+    eventLoop->timeEventNextId = 1;
+    Jim_SetAssocData(interp, "eventloop", JimELAssocDataDeleProc, eventLoop);
+
+    Jim_CreateCommand(interp, "vwait", JimELVwaitCommand, NULL, NULL);
+    Jim_CreateCommand(interp, "after", JimELAfterCommand, NULL, NULL);
+
+    /* Export events API */
+    Jim_RegisterApi(interp, "Jim_CreateFileHandler", Jim_CreateFileHandler);
+    Jim_RegisterApi(interp, "Jim_DeleteFileHandler", Jim_DeleteFileHandler);
+    Jim_RegisterApi(interp, "Jim_CreateTimeHandler", Jim_CreateTimeHandler);
+    Jim_RegisterApi(interp, "Jim_DeleteTimeHandler", Jim_DeleteTimeHandler);
+    Jim_RegisterApi(interp, "Jim_ProcessEvents", Jim_ProcessEvents);
+    return JIM_OK;
+}