1 |
/* $Header$ */
|
2 |
/*
|
3 |
* tclTimer.c --
|
4 |
*
|
5 |
* This file provides timer event management facilities for Tcl,
|
6 |
* including the "after" command.
|
7 |
*
|
8 |
* Copyright (c) 1997 by Sun Microsystems, Inc.
|
9 |
*
|
10 |
* See the file "license.terms" for information on usage and redistribution
|
11 |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
12 |
*
|
13 |
* RCS: @(#) $Id: tcltimer.c,v 1.1.1.1 2001/06/13 04:46:38 dtashley Exp $
|
14 |
*/
|
15 |
|
16 |
#include "tclInt.h"
|
17 |
#include "tclPort.h"
|
18 |
|
19 |
/*
|
20 |
* For each timer callback that's pending there is one record of the following
|
21 |
* type. The normal handlers (created by Tcl_CreateTimerHandler) are chained
|
22 |
* together in a list sorted by time (earliest event first).
|
23 |
*/
|
24 |
|
25 |
typedef struct TimerHandler {
|
26 |
Tcl_Time time; /* When timer is to fire. */
|
27 |
Tcl_TimerProc *proc; /* Procedure to call. */
|
28 |
ClientData clientData; /* Argument to pass to proc. */
|
29 |
Tcl_TimerToken token; /* Identifies handler so it can be
|
30 |
* deleted. */
|
31 |
struct TimerHandler *nextPtr; /* Next event in queue, or NULL for
|
32 |
* end of queue. */
|
33 |
} TimerHandler;
|
34 |
|
35 |
/*
|
36 |
* The data structure below is used by the "after" command to remember
|
37 |
* the command to be executed later. All of the pending "after" commands
|
38 |
* for an interpreter are linked together in a list.
|
39 |
*/
|
40 |
|
41 |
typedef struct AfterInfo {
|
42 |
struct AfterAssocData *assocPtr;
|
43 |
/* Pointer to the "tclAfter" assocData for
|
44 |
* the interp in which command will be
|
45 |
* executed. */
|
46 |
Tcl_Obj *commandPtr; /* Command to execute. */
|
47 |
int id; /* Integer identifier for command; used to
|
48 |
* cancel it. */
|
49 |
Tcl_TimerToken token; /* Used to cancel the "after" command. NULL
|
50 |
* means that the command is run as an
|
51 |
* idle handler rather than as a timer
|
52 |
* handler. NULL means this is an "after
|
53 |
* idle" handler rather than a
|
54 |
* timer handler. */
|
55 |
struct AfterInfo *nextPtr; /* Next in list of all "after" commands for
|
56 |
* this interpreter. */
|
57 |
} AfterInfo;
|
58 |
|
59 |
/*
|
60 |
* One of the following structures is associated with each interpreter
|
61 |
* for which an "after" command has ever been invoked. A pointer to
|
62 |
* this structure is stored in the AssocData for the "tclAfter" key.
|
63 |
*/
|
64 |
|
65 |
typedef struct AfterAssocData {
|
66 |
Tcl_Interp *interp; /* The interpreter for which this data is
|
67 |
* registered. */
|
68 |
AfterInfo *firstAfterPtr; /* First in list of all "after" commands
|
69 |
* still pending for this interpreter, or
|
70 |
* NULL if none. */
|
71 |
} AfterAssocData;
|
72 |
|
73 |
/*
|
74 |
* There is one of the following structures for each of the
|
75 |
* handlers declared in a call to Tcl_DoWhenIdle. All of the
|
76 |
* currently-active handlers are linked together into a list.
|
77 |
*/
|
78 |
|
79 |
typedef struct IdleHandler {
|
80 |
Tcl_IdleProc (*proc); /* Procedure to call. */
|
81 |
ClientData clientData; /* Value to pass to proc. */
|
82 |
int generation; /* Used to distinguish older handlers from
|
83 |
* recently-created ones. */
|
84 |
struct IdleHandler *nextPtr;/* Next in list of active handlers. */
|
85 |
} IdleHandler;
|
86 |
|
87 |
/*
|
88 |
* The timer and idle queues are per-thread because they are associated
|
89 |
* with the notifier, which is also per-thread.
|
90 |
*
|
91 |
* All static variables used in this file are collected into a single
|
92 |
* instance of the following structure. For multi-threaded implementations,
|
93 |
* there is one instance of this structure for each thread.
|
94 |
*
|
95 |
* Notice that different structures with the same name appear in other
|
96 |
* files. The structure defined below is used in this file only.
|
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*/
|
98 |
|
99 |
typedef struct ThreadSpecificData {
|
100 |
TimerHandler *firstTimerHandlerPtr; /* First event in queue. */
|
101 |
int lastTimerId; /* Timer identifier of most recently
|
102 |
* created timer. */
|
103 |
int timerPending; /* 1 if a timer event is in the queue. */
|
104 |
IdleHandler *idleList; /* First in list of all idle handlers. */
|
105 |
IdleHandler *lastIdlePtr; /* Last in list (or NULL for empty list). */
|
106 |
int idleGeneration; /* Used to fill in the "generation" fields
|
107 |
* of IdleHandler structures. Increments
|
108 |
* each time Tcl_DoOneEvent starts calling
|
109 |
* idle handlers, so that all old handlers
|
110 |
* can be called without calling any of the
|
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* new ones created by old ones. */
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112 |
int afterId; /* For unique identifiers of after events. */
|
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} ThreadSpecificData;
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114 |
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static Tcl_ThreadDataKey dataKey;
|
116 |
|
117 |
/*
|
118 |
* Prototypes for procedures referenced only in this file:
|
119 |
*/
|
120 |
|
121 |
static void AfterCleanupProc _ANSI_ARGS_((ClientData clientData,
|
122 |
Tcl_Interp *interp));
|
123 |
static void AfterProc _ANSI_ARGS_((ClientData clientData));
|
124 |
static void FreeAfterPtr _ANSI_ARGS_((AfterInfo *afterPtr));
|
125 |
static AfterInfo * GetAfterEvent _ANSI_ARGS_((AfterAssocData *assocPtr,
|
126 |
Tcl_Obj *commandPtr));
|
127 |
static ThreadSpecificData *InitTimer _ANSI_ARGS_((void));
|
128 |
static void TimerExitProc _ANSI_ARGS_((ClientData clientData));
|
129 |
static int TimerHandlerEventProc _ANSI_ARGS_((Tcl_Event *evPtr,
|
130 |
int flags));
|
131 |
static void TimerCheckProc _ANSI_ARGS_((ClientData clientData,
|
132 |
int flags));
|
133 |
static void TimerSetupProc _ANSI_ARGS_((ClientData clientData,
|
134 |
int flags));
|
135 |
|
136 |
/*
|
137 |
*----------------------------------------------------------------------
|
138 |
*
|
139 |
* InitTimer --
|
140 |
*
|
141 |
* This function initializes the timer module.
|
142 |
*
|
143 |
* Results:
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144 |
* A pointer to the thread specific data.
|
145 |
*
|
146 |
* Side effects:
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147 |
* Registers the idle and timer event sources.
|
148 |
*
|
149 |
*----------------------------------------------------------------------
|
150 |
*/
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151 |
|
152 |
static ThreadSpecificData *
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153 |
InitTimer()
|
154 |
{
|
155 |
ThreadSpecificData *tsdPtr =
|
156 |
(ThreadSpecificData *) TclThreadDataKeyGet(&dataKey);
|
157 |
|
158 |
if (tsdPtr == NULL) {
|
159 |
tsdPtr = TCL_TSD_INIT(&dataKey);
|
160 |
Tcl_CreateEventSource(TimerSetupProc, TimerCheckProc, NULL);
|
161 |
Tcl_CreateThreadExitHandler(TimerExitProc, NULL);
|
162 |
}
|
163 |
return tsdPtr;
|
164 |
}
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165 |
|
166 |
/*
|
167 |
*----------------------------------------------------------------------
|
168 |
*
|
169 |
* TimerExitProc --
|
170 |
*
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171 |
* This function is call at exit or unload time to remove the
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172 |
* timer and idle event sources.
|
173 |
*
|
174 |
* Results:
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175 |
* None.
|
176 |
*
|
177 |
* Side effects:
|
178 |
* Removes the timer and idle event sources.
|
179 |
*
|
180 |
*----------------------------------------------------------------------
|
181 |
*/
|
182 |
|
183 |
static void
|
184 |
TimerExitProc(clientData)
|
185 |
ClientData clientData; /* Not used. */
|
186 |
{
|
187 |
Tcl_DeleteEventSource(TimerSetupProc, TimerCheckProc, NULL);
|
188 |
}
|
189 |
|
190 |
/*
|
191 |
*--------------------------------------------------------------
|
192 |
*
|
193 |
* Tcl_CreateTimerHandler --
|
194 |
*
|
195 |
* Arrange for a given procedure to be invoked at a particular
|
196 |
* time in the future.
|
197 |
*
|
198 |
* Results:
|
199 |
* The return value is a token for the timer event, which
|
200 |
* may be used to delete the event before it fires.
|
201 |
*
|
202 |
* Side effects:
|
203 |
* When milliseconds have elapsed, proc will be invoked
|
204 |
* exactly once.
|
205 |
*
|
206 |
*--------------------------------------------------------------
|
207 |
*/
|
208 |
|
209 |
Tcl_TimerToken
|
210 |
Tcl_CreateTimerHandler(milliseconds, proc, clientData)
|
211 |
int milliseconds; /* How many milliseconds to wait
|
212 |
* before invoking proc. */
|
213 |
Tcl_TimerProc *proc; /* Procedure to invoke. */
|
214 |
ClientData clientData; /* Arbitrary data to pass to proc. */
|
215 |
{
|
216 |
register TimerHandler *timerHandlerPtr, *tPtr2, *prevPtr;
|
217 |
Tcl_Time time;
|
218 |
ThreadSpecificData *tsdPtr;
|
219 |
|
220 |
tsdPtr = InitTimer();
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221 |
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222 |
timerHandlerPtr = (TimerHandler *) ckalloc(sizeof(TimerHandler));
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223 |
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224 |
/*
|
225 |
* Compute when the event should fire.
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226 |
*/
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227 |
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228 |
TclpGetTime(&time);
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229 |
timerHandlerPtr->time.sec = time.sec + milliseconds/1000;
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230 |
timerHandlerPtr->time.usec = time.usec + (milliseconds%1000)*1000;
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231 |
if (timerHandlerPtr->time.usec >= 1000000) {
|
232 |
timerHandlerPtr->time.usec -= 1000000;
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233 |
timerHandlerPtr->time.sec += 1;
|
234 |
}
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235 |
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236 |
/*
|
237 |
* Fill in other fields for the event.
|
238 |
*/
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239 |
|
240 |
timerHandlerPtr->proc = proc;
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241 |
timerHandlerPtr->clientData = clientData;
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242 |
tsdPtr->lastTimerId++;
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243 |
timerHandlerPtr->token = (Tcl_TimerToken) tsdPtr->lastTimerId;
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244 |
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245 |
/*
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246 |
* Add the event to the queue in the correct position
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247 |
* (ordered by event firing time).
|
248 |
*/
|
249 |
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250 |
for (tPtr2 = tsdPtr->firstTimerHandlerPtr, prevPtr = NULL; tPtr2 != NULL;
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251 |
prevPtr = tPtr2, tPtr2 = tPtr2->nextPtr) {
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252 |
if ((tPtr2->time.sec > timerHandlerPtr->time.sec)
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253 |
|| ((tPtr2->time.sec == timerHandlerPtr->time.sec)
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254 |
&& (tPtr2->time.usec > timerHandlerPtr->time.usec))) {
|
255 |
break;
|
256 |
}
|
257 |
}
|
258 |
timerHandlerPtr->nextPtr = tPtr2;
|
259 |
if (prevPtr == NULL) {
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260 |
tsdPtr->firstTimerHandlerPtr = timerHandlerPtr;
|
261 |
} else {
|
262 |
prevPtr->nextPtr = timerHandlerPtr;
|
263 |
}
|
264 |
|
265 |
TimerSetupProc(NULL, TCL_ALL_EVENTS);
|
266 |
|
267 |
return timerHandlerPtr->token;
|
268 |
}
|
269 |
|
270 |
/*
|
271 |
*--------------------------------------------------------------
|
272 |
*
|
273 |
* Tcl_DeleteTimerHandler --
|
274 |
*
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275 |
* Delete a previously-registered timer handler.
|
276 |
*
|
277 |
* Results:
|
278 |
* None.
|
279 |
*
|
280 |
* Side effects:
|
281 |
* Destroy the timer callback identified by TimerToken,
|
282 |
* so that its associated procedure will not be called.
|
283 |
* If the callback has already fired, or if the given
|
284 |
* token doesn't exist, then nothing happens.
|
285 |
*
|
286 |
*--------------------------------------------------------------
|
287 |
*/
|
288 |
|
289 |
void
|
290 |
Tcl_DeleteTimerHandler(token)
|
291 |
Tcl_TimerToken token; /* Result previously returned by
|
292 |
* Tcl_DeleteTimerHandler. */
|
293 |
{
|
294 |
register TimerHandler *timerHandlerPtr, *prevPtr;
|
295 |
ThreadSpecificData *tsdPtr;
|
296 |
|
297 |
tsdPtr = InitTimer();
|
298 |
for (timerHandlerPtr = tsdPtr->firstTimerHandlerPtr, prevPtr = NULL;
|
299 |
timerHandlerPtr != NULL; prevPtr = timerHandlerPtr,
|
300 |
timerHandlerPtr = timerHandlerPtr->nextPtr) {
|
301 |
if (timerHandlerPtr->token != token) {
|
302 |
continue;
|
303 |
}
|
304 |
if (prevPtr == NULL) {
|
305 |
tsdPtr->firstTimerHandlerPtr = timerHandlerPtr->nextPtr;
|
306 |
} else {
|
307 |
prevPtr->nextPtr = timerHandlerPtr->nextPtr;
|
308 |
}
|
309 |
ckfree((char *) timerHandlerPtr);
|
310 |
return;
|
311 |
}
|
312 |
}
|
313 |
|
314 |
/*
|
315 |
*----------------------------------------------------------------------
|
316 |
*
|
317 |
* TimerSetupProc --
|
318 |
*
|
319 |
* This function is called by Tcl_DoOneEvent to setup the timer
|
320 |
* event source for before blocking. This routine checks both the
|
321 |
* idle and after timer lists.
|
322 |
*
|
323 |
* Results:
|
324 |
* None.
|
325 |
*
|
326 |
* Side effects:
|
327 |
* May update the maximum notifier block time.
|
328 |
*
|
329 |
*----------------------------------------------------------------------
|
330 |
*/
|
331 |
|
332 |
static void
|
333 |
TimerSetupProc(data, flags)
|
334 |
ClientData data; /* Not used. */
|
335 |
int flags; /* Event flags as passed to Tcl_DoOneEvent. */
|
336 |
{
|
337 |
Tcl_Time blockTime;
|
338 |
ThreadSpecificData *tsdPtr = InitTimer();
|
339 |
|
340 |
if (((flags & TCL_IDLE_EVENTS) && tsdPtr->idleList)
|
341 |
|| ((flags & TCL_TIMER_EVENTS) && tsdPtr->timerPending)) {
|
342 |
/*
|
343 |
* There is an idle handler or a pending timer event, so just poll.
|
344 |
*/
|
345 |
|
346 |
blockTime.sec = 0;
|
347 |
blockTime.usec = 0;
|
348 |
|
349 |
} else if ((flags & TCL_TIMER_EVENTS) && tsdPtr->firstTimerHandlerPtr) {
|
350 |
/*
|
351 |
* Compute the timeout for the next timer on the list.
|
352 |
*/
|
353 |
|
354 |
TclpGetTime(&blockTime);
|
355 |
blockTime.sec = tsdPtr->firstTimerHandlerPtr->time.sec - blockTime.sec;
|
356 |
blockTime.usec = tsdPtr->firstTimerHandlerPtr->time.usec -
|
357 |
blockTime.usec;
|
358 |
if (blockTime.usec < 0) {
|
359 |
blockTime.sec -= 1;
|
360 |
blockTime.usec += 1000000;
|
361 |
}
|
362 |
if (blockTime.sec < 0) {
|
363 |
blockTime.sec = 0;
|
364 |
blockTime.usec = 0;
|
365 |
}
|
366 |
} else {
|
367 |
return;
|
368 |
}
|
369 |
|
370 |
Tcl_SetMaxBlockTime(&blockTime);
|
371 |
}
|
372 |
|
373 |
/*
|
374 |
*----------------------------------------------------------------------
|
375 |
*
|
376 |
* TimerCheckProc --
|
377 |
*
|
378 |
* This function is called by Tcl_DoOneEvent to check the timer
|
379 |
* event source for events. This routine checks both the
|
380 |
* idle and after timer lists.
|
381 |
*
|
382 |
* Results:
|
383 |
* None.
|
384 |
*
|
385 |
* Side effects:
|
386 |
* May queue an event and update the maximum notifier block time.
|
387 |
*
|
388 |
*----------------------------------------------------------------------
|
389 |
*/
|
390 |
|
391 |
static void
|
392 |
TimerCheckProc(data, flags)
|
393 |
ClientData data; /* Not used. */
|
394 |
int flags; /* Event flags as passed to Tcl_DoOneEvent. */
|
395 |
{
|
396 |
Tcl_Event *timerEvPtr;
|
397 |
Tcl_Time blockTime;
|
398 |
ThreadSpecificData *tsdPtr = InitTimer();
|
399 |
|
400 |
if ((flags & TCL_TIMER_EVENTS) && tsdPtr->firstTimerHandlerPtr) {
|
401 |
/*
|
402 |
* Compute the timeout for the next timer on the list.
|
403 |
*/
|
404 |
|
405 |
TclpGetTime(&blockTime);
|
406 |
blockTime.sec = tsdPtr->firstTimerHandlerPtr->time.sec - blockTime.sec;
|
407 |
blockTime.usec = tsdPtr->firstTimerHandlerPtr->time.usec -
|
408 |
blockTime.usec;
|
409 |
if (blockTime.usec < 0) {
|
410 |
blockTime.sec -= 1;
|
411 |
blockTime.usec += 1000000;
|
412 |
}
|
413 |
if (blockTime.sec < 0) {
|
414 |
blockTime.sec = 0;
|
415 |
blockTime.usec = 0;
|
416 |
}
|
417 |
|
418 |
/*
|
419 |
* If the first timer has expired, stick an event on the queue.
|
420 |
*/
|
421 |
|
422 |
if (blockTime.sec == 0 && blockTime.usec == 0 &&
|
423 |
!tsdPtr->timerPending) {
|
424 |
tsdPtr->timerPending = 1;
|
425 |
timerEvPtr = (Tcl_Event *) ckalloc(sizeof(Tcl_Event));
|
426 |
timerEvPtr->proc = TimerHandlerEventProc;
|
427 |
Tcl_QueueEvent(timerEvPtr, TCL_QUEUE_TAIL);
|
428 |
}
|
429 |
}
|
430 |
}
|
431 |
|
432 |
/*
|
433 |
*----------------------------------------------------------------------
|
434 |
*
|
435 |
* TimerHandlerEventProc --
|
436 |
*
|
437 |
* This procedure is called by Tcl_ServiceEvent when a timer event
|
438 |
* reaches the front of the event queue. This procedure handles
|
439 |
* the event by invoking the callbacks for all timers that are
|
440 |
* ready.
|
441 |
*
|
442 |
* Results:
|
443 |
* Returns 1 if the event was handled, meaning it should be removed
|
444 |
* from the queue. Returns 0 if the event was not handled, meaning
|
445 |
* it should stay on the queue. The only time the event isn't
|
446 |
* handled is if the TCL_TIMER_EVENTS flag bit isn't set.
|
447 |
*
|
448 |
* Side effects:
|
449 |
* Whatever the timer handler callback procedures do.
|
450 |
*
|
451 |
*----------------------------------------------------------------------
|
452 |
*/
|
453 |
|
454 |
static int
|
455 |
TimerHandlerEventProc(evPtr, flags)
|
456 |
Tcl_Event *evPtr; /* Event to service. */
|
457 |
int flags; /* Flags that indicate what events to
|
458 |
* handle, such as TCL_FILE_EVENTS. */
|
459 |
{
|
460 |
TimerHandler *timerHandlerPtr, **nextPtrPtr;
|
461 |
Tcl_Time time;
|
462 |
int currentTimerId;
|
463 |
ThreadSpecificData *tsdPtr = InitTimer();
|
464 |
|
465 |
/*
|
466 |
* Do nothing if timers aren't enabled. This leaves the event on the
|
467 |
* queue, so we will get to it as soon as ServiceEvents() is called
|
468 |
* with timers enabled.
|
469 |
*/
|
470 |
|
471 |
if (!(flags & TCL_TIMER_EVENTS)) {
|
472 |
return 0;
|
473 |
}
|
474 |
|
475 |
/*
|
476 |
* The code below is trickier than it may look, for the following
|
477 |
* reasons:
|
478 |
*
|
479 |
* 1. New handlers can get added to the list while the current
|
480 |
* one is being processed. If new ones get added, we don't
|
481 |
* want to process them during this pass through the list to avoid
|
482 |
* starving other event sources. This is implemented using the
|
483 |
* token number in the handler: new handlers will have a
|
484 |
* newer token than any of the ones currently on the list.
|
485 |
* 2. The handler can call Tcl_DoOneEvent, so we have to remove
|
486 |
* the handler from the list before calling it. Otherwise an
|
487 |
* infinite loop could result.
|
488 |
* 3. Tcl_DeleteTimerHandler can be called to remove an element from
|
489 |
* the list while a handler is executing, so the list could
|
490 |
* change structure during the call.
|
491 |
* 4. Because we only fetch the current time before entering the loop,
|
492 |
* the only way a new timer will even be considered runnable is if
|
493 |
* its expiration time is within the same millisecond as the
|
494 |
* current time. This is fairly likely on Windows, since it has
|
495 |
* a course granularity clock. Since timers are placed
|
496 |
* on the queue in time order with the most recently created
|
497 |
* handler appearing after earlier ones with the same expiration
|
498 |
* time, we don't have to worry about newer generation timers
|
499 |
* appearing before later ones.
|
500 |
*/
|
501 |
|
502 |
tsdPtr->timerPending = 0;
|
503 |
currentTimerId = tsdPtr->lastTimerId;
|
504 |
TclpGetTime(&time);
|
505 |
while (1) {
|
506 |
nextPtrPtr = &tsdPtr->firstTimerHandlerPtr;
|
507 |
timerHandlerPtr = tsdPtr->firstTimerHandlerPtr;
|
508 |
if (timerHandlerPtr == NULL) {
|
509 |
break;
|
510 |
}
|
511 |
|
512 |
if ((timerHandlerPtr->time.sec > time.sec)
|
513 |
|| ((timerHandlerPtr->time.sec == time.sec)
|
514 |
&& (timerHandlerPtr->time.usec > time.usec))) {
|
515 |
break;
|
516 |
}
|
517 |
|
518 |
/*
|
519 |
* Bail out if the next timer is of a newer generation.
|
520 |
*/
|
521 |
|
522 |
if ((currentTimerId - (int)timerHandlerPtr->token) < 0) {
|
523 |
break;
|
524 |
}
|
525 |
|
526 |
/*
|
527 |
* Remove the handler from the queue before invoking it,
|
528 |
* to avoid potential reentrancy problems.
|
529 |
*/
|
530 |
|
531 |
(*nextPtrPtr) = timerHandlerPtr->nextPtr;
|
532 |
(*timerHandlerPtr->proc)(timerHandlerPtr->clientData);
|
533 |
ckfree((char *) timerHandlerPtr);
|
534 |
}
|
535 |
TimerSetupProc(NULL, TCL_TIMER_EVENTS);
|
536 |
return 1;
|
537 |
}
|
538 |
|
539 |
/*
|
540 |
*--------------------------------------------------------------
|
541 |
*
|
542 |
* Tcl_DoWhenIdle --
|
543 |
*
|
544 |
* Arrange for proc to be invoked the next time the system is
|
545 |
* idle (i.e., just before the next time that Tcl_DoOneEvent
|
546 |
* would have to wait for something to happen).
|
547 |
*
|
548 |
* Results:
|
549 |
* None.
|
550 |
*
|
551 |
* Side effects:
|
552 |
* Proc will eventually be called, with clientData as argument.
|
553 |
* See the manual entry for details.
|
554 |
*
|
555 |
*--------------------------------------------------------------
|
556 |
*/
|
557 |
|
558 |
void
|
559 |
Tcl_DoWhenIdle(proc, clientData)
|
560 |
Tcl_IdleProc *proc; /* Procedure to invoke. */
|
561 |
ClientData clientData; /* Arbitrary value to pass to proc. */
|
562 |
{
|
563 |
register IdleHandler *idlePtr;
|
564 |
Tcl_Time blockTime;
|
565 |
ThreadSpecificData *tsdPtr = InitTimer();
|
566 |
|
567 |
idlePtr = (IdleHandler *) ckalloc(sizeof(IdleHandler));
|
568 |
idlePtr->proc = proc;
|
569 |
idlePtr->clientData = clientData;
|
570 |
idlePtr->generation = tsdPtr->idleGeneration;
|
571 |
idlePtr->nextPtr = NULL;
|
572 |
if (tsdPtr->lastIdlePtr == NULL) {
|
573 |
tsdPtr->idleList = idlePtr;
|
574 |
} else {
|
575 |
tsdPtr->lastIdlePtr->nextPtr = idlePtr;
|
576 |
}
|
577 |
tsdPtr->lastIdlePtr = idlePtr;
|
578 |
|
579 |
blockTime.sec = 0;
|
580 |
blockTime.usec = 0;
|
581 |
Tcl_SetMaxBlockTime(&blockTime);
|
582 |
}
|
583 |
|
584 |
/*
|
585 |
*----------------------------------------------------------------------
|
586 |
*
|
587 |
* Tcl_CancelIdleCall --
|
588 |
*
|
589 |
* If there are any when-idle calls requested to a given procedure
|
590 |
* with given clientData, cancel all of them.
|
591 |
*
|
592 |
* Results:
|
593 |
* None.
|
594 |
*
|
595 |
* Side effects:
|
596 |
* If the proc/clientData combination were on the when-idle list,
|
597 |
* they are removed so that they will never be called.
|
598 |
*
|
599 |
*----------------------------------------------------------------------
|
600 |
*/
|
601 |
|
602 |
void
|
603 |
Tcl_CancelIdleCall(proc, clientData)
|
604 |
Tcl_IdleProc *proc; /* Procedure that was previously registered. */
|
605 |
ClientData clientData; /* Arbitrary value to pass to proc. */
|
606 |
{
|
607 |
register IdleHandler *idlePtr, *prevPtr;
|
608 |
IdleHandler *nextPtr;
|
609 |
ThreadSpecificData *tsdPtr = InitTimer();
|
610 |
|
611 |
for (prevPtr = NULL, idlePtr = tsdPtr->idleList; idlePtr != NULL;
|
612 |
prevPtr = idlePtr, idlePtr = idlePtr->nextPtr) {
|
613 |
while ((idlePtr->proc == proc)
|
614 |
&& (idlePtr->clientData == clientData)) {
|
615 |
nextPtr = idlePtr->nextPtr;
|
616 |
ckfree((char *) idlePtr);
|
617 |
idlePtr = nextPtr;
|
618 |
if (prevPtr == NULL) {
|
619 |
tsdPtr->idleList = idlePtr;
|
620 |
} else {
|
621 |
prevPtr->nextPtr = idlePtr;
|
622 |
}
|
623 |
if (idlePtr == NULL) {
|
624 |
tsdPtr->lastIdlePtr = prevPtr;
|
625 |
return;
|
626 |
}
|
627 |
}
|
628 |
}
|
629 |
}
|
630 |
|
631 |
/*
|
632 |
*----------------------------------------------------------------------
|
633 |
*
|
634 |
* TclServiceIdle --
|
635 |
*
|
636 |
* This procedure is invoked by the notifier when it becomes
|
637 |
* idle. It will invoke all idle handlers that are present at
|
638 |
* the time the call is invoked, but not those added during idle
|
639 |
* processing.
|
640 |
*
|
641 |
* Results:
|
642 |
* The return value is 1 if TclServiceIdle found something to
|
643 |
* do, otherwise return value is 0.
|
644 |
*
|
645 |
* Side effects:
|
646 |
* Invokes all pending idle handlers.
|
647 |
*
|
648 |
*----------------------------------------------------------------------
|
649 |
*/
|
650 |
|
651 |
int
|
652 |
TclServiceIdle()
|
653 |
{
|
654 |
IdleHandler *idlePtr;
|
655 |
int oldGeneration;
|
656 |
Tcl_Time blockTime;
|
657 |
ThreadSpecificData *tsdPtr = InitTimer();
|
658 |
|
659 |
if (tsdPtr->idleList == NULL) {
|
660 |
return 0;
|
661 |
}
|
662 |
|
663 |
oldGeneration = tsdPtr->idleGeneration;
|
664 |
tsdPtr->idleGeneration++;
|
665 |
|
666 |
/*
|
667 |
* The code below is trickier than it may look, for the following
|
668 |
* reasons:
|
669 |
*
|
670 |
* 1. New handlers can get added to the list while the current
|
671 |
* one is being processed. If new ones get added, we don't
|
672 |
* want to process them during this pass through the list (want
|
673 |
* to check for other work to do first). This is implemented
|
674 |
* using the generation number in the handler: new handlers
|
675 |
* will have a different generation than any of the ones currently
|
676 |
* on the list.
|
677 |
* 2. The handler can call Tcl_DoOneEvent, so we have to remove
|
678 |
* the handler from the list before calling it. Otherwise an
|
679 |
* infinite loop could result.
|
680 |
* 3. Tcl_CancelIdleCall can be called to remove an element from
|
681 |
* the list while a handler is executing, so the list could
|
682 |
* change structure during the call.
|
683 |
*/
|
684 |
|
685 |
for (idlePtr = tsdPtr->idleList;
|
686 |
((idlePtr != NULL)
|
687 |
&& ((oldGeneration - idlePtr->generation) >= 0));
|
688 |
idlePtr = tsdPtr->idleList) {
|
689 |
tsdPtr->idleList = idlePtr->nextPtr;
|
690 |
if (tsdPtr->idleList == NULL) {
|
691 |
tsdPtr->lastIdlePtr = NULL;
|
692 |
}
|
693 |
(*idlePtr->proc)(idlePtr->clientData);
|
694 |
ckfree((char *) idlePtr);
|
695 |
}
|
696 |
if (tsdPtr->idleList) {
|
697 |
blockTime.sec = 0;
|
698 |
blockTime.usec = 0;
|
699 |
Tcl_SetMaxBlockTime(&blockTime);
|
700 |
}
|
701 |
return 1;
|
702 |
}
|
703 |
|
704 |
/*
|
705 |
*----------------------------------------------------------------------
|
706 |
*
|
707 |
* Tcl_AfterObjCmd --
|
708 |
*
|
709 |
* This procedure is invoked to process the "after" Tcl command.
|
710 |
* See the user documentation for details on what it does.
|
711 |
*
|
712 |
* Results:
|
713 |
* A standard Tcl result.
|
714 |
*
|
715 |
* Side effects:
|
716 |
* See the user documentation.
|
717 |
*
|
718 |
*----------------------------------------------------------------------
|
719 |
*/
|
720 |
|
721 |
/* ARGSUSED */
|
722 |
int
|
723 |
Tcl_AfterObjCmd(clientData, interp, objc, objv)
|
724 |
ClientData clientData; /* Points to the "tclAfter" assocData for
|
725 |
* this interpreter, or NULL if the assocData
|
726 |
* hasn't been created yet.*/
|
727 |
Tcl_Interp *interp; /* Current interpreter. */
|
728 |
int objc; /* Number of arguments. */
|
729 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
730 |
{
|
731 |
int ms;
|
732 |
AfterInfo *afterPtr;
|
733 |
AfterAssocData *assocPtr = (AfterAssocData *) clientData;
|
734 |
Tcl_CmdInfo cmdInfo;
|
735 |
int length;
|
736 |
char *argString;
|
737 |
int index;
|
738 |
char buf[16 + TCL_INTEGER_SPACE];
|
739 |
static char *afterSubCmds[] = {"cancel", "idle", "info", (char *) NULL};
|
740 |
enum afterSubCmds {AFTER_CANCEL, AFTER_IDLE, AFTER_INFO};
|
741 |
ThreadSpecificData *tsdPtr = InitTimer();
|
742 |
|
743 |
if (objc < 2) {
|
744 |
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
|
745 |
return TCL_ERROR;
|
746 |
}
|
747 |
|
748 |
/*
|
749 |
* Create the "after" information associated for this interpreter,
|
750 |
* if it doesn't already exist. Associate it with the command too,
|
751 |
* so that it will be passed in as the ClientData argument in the
|
752 |
* future.
|
753 |
*/
|
754 |
|
755 |
if (assocPtr == NULL) {
|
756 |
assocPtr = (AfterAssocData *) ckalloc(sizeof(AfterAssocData));
|
757 |
assocPtr->interp = interp;
|
758 |
assocPtr->firstAfterPtr = NULL;
|
759 |
Tcl_SetAssocData(interp, "tclAfter", AfterCleanupProc,
|
760 |
(ClientData) assocPtr);
|
761 |
cmdInfo.proc = NULL;
|
762 |
cmdInfo.clientData = (ClientData) NULL;
|
763 |
cmdInfo.objProc = Tcl_AfterObjCmd;
|
764 |
cmdInfo.objClientData = (ClientData) assocPtr;
|
765 |
cmdInfo.deleteProc = NULL;
|
766 |
cmdInfo.deleteData = (ClientData) assocPtr;
|
767 |
Tcl_SetCommandInfo(interp, Tcl_GetStringFromObj(objv[0], &length),
|
768 |
&cmdInfo);
|
769 |
}
|
770 |
|
771 |
/*
|
772 |
* First lets see if the command was passed a number as the first argument.
|
773 |
*/
|
774 |
|
775 |
if (objv[1]->typePtr == &tclIntType) {
|
776 |
ms = (int) objv[1]->internalRep.longValue;
|
777 |
goto processInteger;
|
778 |
}
|
779 |
argString = Tcl_GetStringFromObj(objv[1], &length);
|
780 |
if (isdigit(UCHAR(argString[0]))) { /* INTL: digit */
|
781 |
if (Tcl_GetIntFromObj(interp, objv[1], &ms) != TCL_OK) {
|
782 |
return TCL_ERROR;
|
783 |
}
|
784 |
processInteger:
|
785 |
if (ms < 0) {
|
786 |
ms = 0;
|
787 |
}
|
788 |
if (objc == 2) {
|
789 |
Tcl_Sleep(ms);
|
790 |
return TCL_OK;
|
791 |
}
|
792 |
afterPtr = (AfterInfo *) ckalloc((unsigned) (sizeof(AfterInfo)));
|
793 |
afterPtr->assocPtr = assocPtr;
|
794 |
if (objc == 3) {
|
795 |
afterPtr->commandPtr = objv[2];
|
796 |
} else {
|
797 |
afterPtr->commandPtr = Tcl_ConcatObj(objc-2, objv+2);
|
798 |
}
|
799 |
Tcl_IncrRefCount(afterPtr->commandPtr);
|
800 |
/*
|
801 |
* The variable below is used to generate unique identifiers for
|
802 |
* after commands. This id can wrap around, which can potentially
|
803 |
* cause problems. However, there are not likely to be problems
|
804 |
* in practice, because after commands can only be requested to
|
805 |
* about a month in the future, and wrap-around is unlikely to
|
806 |
* occur in less than about 1-10 years. Thus it's unlikely that
|
807 |
* any old ids will still be around when wrap-around occurs.
|
808 |
*/
|
809 |
afterPtr->id = tsdPtr->afterId;
|
810 |
tsdPtr->afterId += 1;
|
811 |
afterPtr->token = Tcl_CreateTimerHandler(ms, AfterProc,
|
812 |
(ClientData) afterPtr);
|
813 |
afterPtr->nextPtr = assocPtr->firstAfterPtr;
|
814 |
assocPtr->firstAfterPtr = afterPtr;
|
815 |
sprintf(buf, "after#%d", afterPtr->id);
|
816 |
Tcl_AppendResult(interp, buf, (char *) NULL);
|
817 |
return TCL_OK;
|
818 |
}
|
819 |
|
820 |
/*
|
821 |
* If it's not a number it must be a subcommand.
|
822 |
*/
|
823 |
|
824 |
if (Tcl_GetIndexFromObj(NULL, objv[1], afterSubCmds, "argument",
|
825 |
0, &index) != TCL_OK) {
|
826 |
Tcl_AppendResult(interp, "bad argument \"", argString,
|
827 |
"\": must be cancel, idle, info, or a number",
|
828 |
(char *) NULL);
|
829 |
return TCL_ERROR;
|
830 |
}
|
831 |
switch ((enum afterSubCmds) index) {
|
832 |
case AFTER_CANCEL: {
|
833 |
Tcl_Obj *commandPtr;
|
834 |
char *command, *tempCommand;
|
835 |
int tempLength;
|
836 |
|
837 |
if (objc < 3) {
|
838 |
Tcl_WrongNumArgs(interp, 2, objv, "id|command");
|
839 |
return TCL_ERROR;
|
840 |
}
|
841 |
if (objc == 3) {
|
842 |
commandPtr = objv[2];
|
843 |
} else {
|
844 |
commandPtr = Tcl_ConcatObj(objc-2, objv+2);;
|
845 |
}
|
846 |
command = Tcl_GetStringFromObj(commandPtr, &length);
|
847 |
for (afterPtr = assocPtr->firstAfterPtr; afterPtr != NULL;
|
848 |
afterPtr = afterPtr->nextPtr) {
|
849 |
tempCommand = Tcl_GetStringFromObj(afterPtr->commandPtr,
|
850 |
&tempLength);
|
851 |
if ((length == tempLength)
|
852 |
&& (memcmp((void*) command, (void*) tempCommand,
|
853 |
(unsigned) length) == 0)) {
|
854 |
break;
|
855 |
}
|
856 |
}
|
857 |
if (afterPtr == NULL) {
|
858 |
afterPtr = GetAfterEvent(assocPtr, commandPtr);
|
859 |
}
|
860 |
if (objc != 3) {
|
861 |
Tcl_DecrRefCount(commandPtr);
|
862 |
}
|
863 |
if (afterPtr != NULL) {
|
864 |
if (afterPtr->token != NULL) {
|
865 |
Tcl_DeleteTimerHandler(afterPtr->token);
|
866 |
} else {
|
867 |
Tcl_CancelIdleCall(AfterProc, (ClientData) afterPtr);
|
868 |
}
|
869 |
FreeAfterPtr(afterPtr);
|
870 |
}
|
871 |
break;
|
872 |
}
|
873 |
case AFTER_IDLE:
|
874 |
if (objc < 3) {
|
875 |
Tcl_WrongNumArgs(interp, 2, objv, "script script ...");
|
876 |
return TCL_ERROR;
|
877 |
}
|
878 |
afterPtr = (AfterInfo *) ckalloc((unsigned) (sizeof(AfterInfo)));
|
879 |
afterPtr->assocPtr = assocPtr;
|
880 |
if (objc == 3) {
|
881 |
afterPtr->commandPtr = objv[2];
|
882 |
} else {
|
883 |
afterPtr->commandPtr = Tcl_ConcatObj(objc-2, objv+2);
|
884 |
}
|
885 |
Tcl_IncrRefCount(afterPtr->commandPtr);
|
886 |
afterPtr->id = tsdPtr->afterId;
|
887 |
tsdPtr->afterId += 1;
|
888 |
afterPtr->token = NULL;
|
889 |
afterPtr->nextPtr = assocPtr->firstAfterPtr;
|
890 |
assocPtr->firstAfterPtr = afterPtr;
|
891 |
Tcl_DoWhenIdle(AfterProc, (ClientData) afterPtr);
|
892 |
sprintf(buf, "after#%d", afterPtr->id);
|
893 |
Tcl_AppendResult(interp, buf, (char *) NULL);
|
894 |
break;
|
895 |
case AFTER_INFO: {
|
896 |
Tcl_Obj *resultListPtr;
|
897 |
|
898 |
if (objc == 2) {
|
899 |
for (afterPtr = assocPtr->firstAfterPtr; afterPtr != NULL;
|
900 |
afterPtr = afterPtr->nextPtr) {
|
901 |
if (assocPtr->interp == interp) {
|
902 |
sprintf(buf, "after#%d", afterPtr->id);
|
903 |
Tcl_AppendElement(interp, buf);
|
904 |
}
|
905 |
}
|
906 |
return TCL_OK;
|
907 |
}
|
908 |
if (objc != 3) {
|
909 |
Tcl_WrongNumArgs(interp, 2, objv, "?id?");
|
910 |
return TCL_ERROR;
|
911 |
}
|
912 |
afterPtr = GetAfterEvent(assocPtr, objv[2]);
|
913 |
if (afterPtr == NULL) {
|
914 |
Tcl_AppendResult(interp, "event \"", Tcl_GetString(objv[2]),
|
915 |
"\" doesn't exist", (char *) NULL);
|
916 |
return TCL_ERROR;
|
917 |
}
|
918 |
resultListPtr = Tcl_GetObjResult(interp);
|
919 |
Tcl_ListObjAppendElement(interp, resultListPtr, afterPtr->commandPtr);
|
920 |
Tcl_ListObjAppendElement(interp, resultListPtr, Tcl_NewStringObj(
|
921 |
(afterPtr->token == NULL) ? "idle" : "timer", -1));
|
922 |
Tcl_SetObjResult(interp, resultListPtr);
|
923 |
break;
|
924 |
}
|
925 |
default: {
|
926 |
panic("Tcl_AfterObjCmd: bad subcommand index to afterSubCmds");
|
927 |
}
|
928 |
}
|
929 |
return TCL_OK;
|
930 |
}
|
931 |
|
932 |
/*
|
933 |
*----------------------------------------------------------------------
|
934 |
*
|
935 |
* GetAfterEvent --
|
936 |
*
|
937 |
* This procedure parses an "after" id such as "after#4" and
|
938 |
* returns a pointer to the AfterInfo structure.
|
939 |
*
|
940 |
* Results:
|
941 |
* The return value is either a pointer to an AfterInfo structure,
|
942 |
* if one is found that corresponds to "cmdString" and is for interp,
|
943 |
* or NULL if no corresponding after event can be found.
|
944 |
*
|
945 |
* Side effects:
|
946 |
* None.
|
947 |
*
|
948 |
*----------------------------------------------------------------------
|
949 |
*/
|
950 |
|
951 |
static AfterInfo *
|
952 |
GetAfterEvent(assocPtr, commandPtr)
|
953 |
AfterAssocData *assocPtr; /* Points to "after"-related information for
|
954 |
* this interpreter. */
|
955 |
Tcl_Obj *commandPtr;
|
956 |
{
|
957 |
char *cmdString; /* Textual identifier for after event, such
|
958 |
* as "after#6". */
|
959 |
AfterInfo *afterPtr;
|
960 |
int id;
|
961 |
char *end;
|
962 |
|
963 |
cmdString = Tcl_GetString(commandPtr);
|
964 |
if (strncmp(cmdString, "after#", 6) != 0) {
|
965 |
return NULL;
|
966 |
}
|
967 |
cmdString += 6;
|
968 |
id = strtoul(cmdString, &end, 10);
|
969 |
if ((end == cmdString) || (*end != 0)) {
|
970 |
return NULL;
|
971 |
}
|
972 |
for (afterPtr = assocPtr->firstAfterPtr; afterPtr != NULL;
|
973 |
afterPtr = afterPtr->nextPtr) {
|
974 |
if (afterPtr->id == id) {
|
975 |
return afterPtr;
|
976 |
}
|
977 |
}
|
978 |
return NULL;
|
979 |
}
|
980 |
|
981 |
/*
|
982 |
*----------------------------------------------------------------------
|
983 |
*
|
984 |
* AfterProc --
|
985 |
*
|
986 |
* Timer callback to execute commands registered with the
|
987 |
* "after" command.
|
988 |
*
|
989 |
* Results:
|
990 |
* None.
|
991 |
*
|
992 |
* Side effects:
|
993 |
* Executes whatever command was specified. If the command
|
994 |
* returns an error, then the command "bgerror" is invoked
|
995 |
* to process the error; if bgerror fails then information
|
996 |
* about the error is output on stderr.
|
997 |
*
|
998 |
*----------------------------------------------------------------------
|
999 |
*/
|
1000 |
|
1001 |
static void
|
1002 |
AfterProc(clientData)
|
1003 |
ClientData clientData; /* Describes command to execute. */
|
1004 |
{
|
1005 |
AfterInfo *afterPtr = (AfterInfo *) clientData;
|
1006 |
AfterAssocData *assocPtr = afterPtr->assocPtr;
|
1007 |
AfterInfo *prevPtr;
|
1008 |
int result;
|
1009 |
Tcl_Interp *interp;
|
1010 |
char *script;
|
1011 |
int numBytes;
|
1012 |
|
1013 |
/*
|
1014 |
* First remove the callback from our list of callbacks; otherwise
|
1015 |
* someone could delete the callback while it's being executed, which
|
1016 |
* could cause a core dump.
|
1017 |
*/
|
1018 |
|
1019 |
if (assocPtr->firstAfterPtr == afterPtr) {
|
1020 |
assocPtr->firstAfterPtr = afterPtr->nextPtr;
|
1021 |
} else {
|
1022 |
for (prevPtr = assocPtr->firstAfterPtr; prevPtr->nextPtr != afterPtr;
|
1023 |
prevPtr = prevPtr->nextPtr) {
|
1024 |
/* Empty loop body. */
|
1025 |
}
|
1026 |
prevPtr->nextPtr = afterPtr->nextPtr;
|
1027 |
}
|
1028 |
|
1029 |
/*
|
1030 |
* Execute the callback.
|
1031 |
*/
|
1032 |
|
1033 |
interp = assocPtr->interp;
|
1034 |
Tcl_Preserve((ClientData) interp);
|
1035 |
script = Tcl_GetStringFromObj(afterPtr->commandPtr, &numBytes);
|
1036 |
result = Tcl_EvalEx(interp, script, numBytes, TCL_EVAL_GLOBAL);
|
1037 |
if (result != TCL_OK) {
|
1038 |
Tcl_AddErrorInfo(interp, "\n (\"after\" script)");
|
1039 |
Tcl_BackgroundError(interp);
|
1040 |
}
|
1041 |
Tcl_Release((ClientData) interp);
|
1042 |
|
1043 |
/*
|
1044 |
* Free the memory for the callback.
|
1045 |
*/
|
1046 |
|
1047 |
Tcl_DecrRefCount(afterPtr->commandPtr);
|
1048 |
ckfree((char *) afterPtr);
|
1049 |
}
|
1050 |
|
1051 |
/*
|
1052 |
*----------------------------------------------------------------------
|
1053 |
*
|
1054 |
* FreeAfterPtr --
|
1055 |
*
|
1056 |
* This procedure removes an "after" command from the list of
|
1057 |
* those that are pending and frees its resources. This procedure
|
1058 |
* does *not* cancel the timer handler; if that's needed, the
|
1059 |
* caller must do it.
|
1060 |
*
|
1061 |
* Results:
|
1062 |
* None.
|
1063 |
*
|
1064 |
* Side effects:
|
1065 |
* The memory associated with afterPtr is released.
|
1066 |
*
|
1067 |
*----------------------------------------------------------------------
|
1068 |
*/
|
1069 |
|
1070 |
static void
|
1071 |
FreeAfterPtr(afterPtr)
|
1072 |
AfterInfo *afterPtr; /* Command to be deleted. */
|
1073 |
{
|
1074 |
AfterInfo *prevPtr;
|
1075 |
AfterAssocData *assocPtr = afterPtr->assocPtr;
|
1076 |
|
1077 |
if (assocPtr->firstAfterPtr == afterPtr) {
|
1078 |
assocPtr->firstAfterPtr = afterPtr->nextPtr;
|
1079 |
} else {
|
1080 |
for (prevPtr = assocPtr->firstAfterPtr; prevPtr->nextPtr != afterPtr;
|
1081 |
prevPtr = prevPtr->nextPtr) {
|
1082 |
/* Empty loop body. */
|
1083 |
}
|
1084 |
prevPtr->nextPtr = afterPtr->nextPtr;
|
1085 |
}
|
1086 |
Tcl_DecrRefCount(afterPtr->commandPtr);
|
1087 |
ckfree((char *) afterPtr);
|
1088 |
}
|
1089 |
|
1090 |
/*
|
1091 |
*----------------------------------------------------------------------
|
1092 |
*
|
1093 |
* AfterCleanupProc --
|
1094 |
*
|
1095 |
* This procedure is invoked whenever an interpreter is deleted
|
1096 |
* to cleanup the AssocData for "tclAfter".
|
1097 |
*
|
1098 |
* Results:
|
1099 |
* None.
|
1100 |
*
|
1101 |
* Side effects:
|
1102 |
* After commands are removed.
|
1103 |
*
|
1104 |
*----------------------------------------------------------------------
|
1105 |
*/
|
1106 |
|
1107 |
/* ARGSUSED */
|
1108 |
static void
|
1109 |
AfterCleanupProc(clientData, interp)
|
1110 |
ClientData clientData; /* Points to AfterAssocData for the
|
1111 |
* interpreter. */
|
1112 |
Tcl_Interp *interp; /* Interpreter that is being deleted. */
|
1113 |
{
|
1114 |
AfterAssocData *assocPtr = (AfterAssocData *) clientData;
|
1115 |
AfterInfo *afterPtr;
|
1116 |
|
1117 |
while (assocPtr->firstAfterPtr != NULL) {
|
1118 |
afterPtr = assocPtr->firstAfterPtr;
|
1119 |
assocPtr->firstAfterPtr = afterPtr->nextPtr;
|
1120 |
if (afterPtr->token != NULL) {
|
1121 |
Tcl_DeleteTimerHandler(afterPtr->token);
|
1122 |
} else {
|
1123 |
Tcl_CancelIdleCall(AfterProc, (ClientData) afterPtr);
|
1124 |
}
|
1125 |
Tcl_DecrRefCount(afterPtr->commandPtr);
|
1126 |
ckfree((char *) afterPtr);
|
1127 |
}
|
1128 |
ckfree((char *) assocPtr);
|
1129 |
}
|
1130 |
|
1131 |
/* End of tcltimer.c */
|