1 /*
2 * Copyright (c) 2002, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #ifdef HEADLESS
27 #error This file should not be included in headless library
28 #endif
29
30 #include <X11/Xlib.h>
31 #include <X11/Xutil.h>
32 #include <X11/Xos.h>
33 #include <X11/Xatom.h>
34 #ifdef __linux__
35 #include <execinfo.h>
36 #endif
37
38 #include <jvm.h>
39 #include <jni.h>
40 #include <jlong.h>
41 #include <jni_util.h>
42
43 #include "awt_p.h"
44 #include "awt_Component.h"
45 #include "awt_MenuComponent.h"
46 #include "awt_util.h"
47
48 #include "sun_awt_X11_XToolkit.h"
49 #include "java_awt_SystemColor.h"
50 #include "java_awt_TrayIcon.h"
51 #include <X11/extensions/XTest.h>
52
53 #include <unistd.h>
54
55 uint32_t awt_NumLockMask = 0;
56 Boolean awt_ModLockIsShiftLock = False;
57
58 static int32_t num_buttons = 0;
59 int32_t getNumButtons();
60
61 extern JavaVM *jvm;
62
63 // Tracing level
64 static int tracing = 0;
65 #ifdef PRINT
66 #undef PRINT
67 #endif
68 #ifdef PRINT2
69 #undef PRINT2
70 #endif
71
72 #define PRINT if (tracing) printf
73 #define PRINT2 if (tracing > 1) printf
74
75
76 struct ComponentIDs componentIDs;
77
78 struct MenuComponentIDs menuComponentIDs;
79
80 extern Display* awt_init_Display(JNIEnv *env, jobject this);
81 extern void freeNativeStringArray(char **array, jsize length);
82 extern char** stringArrayToNative(JNIEnv *env, jobjectArray array, jsize * ret_length);
83
84 /* This function gets called from the static initializer for FileDialog.java
85 to initialize the fieldIDs for fields that may be accessed from C */
86
87 JNIEXPORT void JNICALL
88 Java_java_awt_FileDialog_initIDs
89 (JNIEnv *env, jclass cls)
90 {
91
92 }
93
94 JNIEXPORT void JNICALL
95 Java_sun_awt_X11_XToolkit_initIDs
96 (JNIEnv *env, jclass clazz)
97 {
98 jfieldID fid = (*env)->GetStaticFieldID(env, clazz, "numLockMask", "I");
99 CHECK_NULL(fid);
100 awt_NumLockMask = (*env)->GetStaticIntField(env, clazz, fid);
101 DTRACE_PRINTLN1("awt_NumLockMask = %u", awt_NumLockMask);
102 fid = (*env)->GetStaticFieldID(env, clazz, "modLockIsShiftLock", "I");
103 CHECK_NULL(fid);
104 awt_ModLockIsShiftLock = (*env)->GetStaticIntField(env, clazz, fid) != 0 ? True : False;
105 }
106
107 /*
108 * Class: sun_awt_X11_XToolkit
109 * Method: getTrayIconDisplayTimeout
110 * Signature: ()J
111 */
112 JNIEXPORT jlong JNICALL Java_sun_awt_X11_XToolkit_getTrayIconDisplayTimeout
113 (JNIEnv *env, jclass clazz)
114 {
115 return (jlong) 2000;
116 }
117
118 /*
119 * Class: sun_awt_X11_XToolkit
120 * Method: getDefaultXColormap
121 * Signature: ()J
122 */
123 JNIEXPORT jlong JNICALL Java_sun_awt_X11_XToolkit_getDefaultXColormap
124 (JNIEnv *env, jclass clazz)
125 {
126 AwtGraphicsConfigDataPtr defaultConfig =
127 getDefaultConfig(DefaultScreen(awt_display));
128
129 return (jlong) defaultConfig->awt_cmap;
130 }
131
132 JNIEXPORT jlong JNICALL Java_sun_awt_X11_XToolkit_getDefaultScreenData
133 (JNIEnv *env, jclass clazz)
134 {
135 return ptr_to_jlong(getDefaultConfig(DefaultScreen(awt_display)));
136 }
137
138
139 JNIEXPORT jint JNICALL
140 DEF_JNI_OnLoad(JavaVM *vm, void *reserved)
141 {
142 jvm = vm;
143
144 //Set the gtk backend to x11 on all the systems
145 putenv("GDK_BACKEND=x11");
146
147 return JNI_VERSION_1_2;
148 }
149
150 /*
151 * Class: sun_awt_X11_XToolkit
152 * Method: nativeLoadSystemColors
153 * Signature: ([I)V
154 */
155 JNIEXPORT void JNICALL Java_sun_awt_X11_XToolkit_nativeLoadSystemColors
156 (JNIEnv *env, jobject this, jintArray systemColors)
157 {
158 AwtGraphicsConfigDataPtr defaultConfig =
159 getDefaultConfig(DefaultScreen(awt_display));
160 awtJNI_CreateColorData(env, defaultConfig, 1);
161 }
162
163 JNIEXPORT void JNICALL
164 Java_java_awt_Component_initIDs
165 (JNIEnv *env, jclass cls)
166 {
167 jclass keyclass = NULL;
168
169
170 componentIDs.x = (*env)->GetFieldID(env, cls, "x", "I");
171 CHECK_NULL(componentIDs.x);
172 componentIDs.y = (*env)->GetFieldID(env, cls, "y", "I");
173 CHECK_NULL(componentIDs.y);
174 componentIDs.width = (*env)->GetFieldID(env, cls, "width", "I");
175 CHECK_NULL(componentIDs.width);
176 componentIDs.height = (*env)->GetFieldID(env, cls, "height", "I");
177 CHECK_NULL(componentIDs.height);
178 componentIDs.isPacked = (*env)->GetFieldID(env, cls, "isPacked", "Z");
179 CHECK_NULL(componentIDs.isPacked);
180 componentIDs.peer =
181 (*env)->GetFieldID(env, cls, "peer", "Ljava/awt/peer/ComponentPeer;");
182 CHECK_NULL(componentIDs.peer);
183 componentIDs.background =
184 (*env)->GetFieldID(env, cls, "background", "Ljava/awt/Color;");
185 CHECK_NULL(componentIDs.background);
186 componentIDs.foreground =
187 (*env)->GetFieldID(env, cls, "foreground", "Ljava/awt/Color;");
188 CHECK_NULL(componentIDs.foreground);
189 componentIDs.graphicsConfig =
190 (*env)->GetFieldID(env, cls, "graphicsConfig",
191 "Ljava/awt/GraphicsConfiguration;");
192 CHECK_NULL(componentIDs.graphicsConfig);
193 componentIDs.name =
194 (*env)->GetFieldID(env, cls, "name", "Ljava/lang/String;");
195 CHECK_NULL(componentIDs.name);
196
197 /* Use _NoClientCode() methods for trusted methods, so that we
198 * know that we are not invoking client code on trusted threads
199 */
200 componentIDs.getParent =
201 (*env)->GetMethodID(env, cls, "getParent_NoClientCode",
202 "()Ljava/awt/Container;");
203 CHECK_NULL(componentIDs.getParent);
204
205 componentIDs.getLocationOnScreen =
206 (*env)->GetMethodID(env, cls, "getLocationOnScreen_NoTreeLock",
207 "()Ljava/awt/Point;");
208 CHECK_NULL(componentIDs.getLocationOnScreen);
209
210 keyclass = (*env)->FindClass(env, "java/awt/event/KeyEvent");
211 CHECK_NULL(keyclass);
212
213 componentIDs.isProxyActive =
214 (*env)->GetFieldID(env, keyclass, "isProxyActive",
215 "Z");
216 CHECK_NULL(componentIDs.isProxyActive);
217
218 componentIDs.appContext =
219 (*env)->GetFieldID(env, cls, "appContext",
220 "Lsun/awt/AppContext;");
221
222 (*env)->DeleteLocalRef(env, keyclass);
223 }
224
225
226 JNIEXPORT void JNICALL
227 Java_java_awt_Container_initIDs
228 (JNIEnv *env, jclass cls)
229 {
230
231 }
232
233
234 JNIEXPORT void JNICALL
235 Java_java_awt_Button_initIDs
236 (JNIEnv *env, jclass cls)
237 {
238
239 }
240
241 JNIEXPORT void JNICALL
242 Java_java_awt_Scrollbar_initIDs
243 (JNIEnv *env, jclass cls)
244 {
245
246 }
247
248
249 JNIEXPORT void JNICALL
250 Java_java_awt_Window_initIDs
251 (JNIEnv *env, jclass cls)
252 {
253
254 }
255
256 JNIEXPORT void JNICALL
257 Java_java_awt_Frame_initIDs
258 (JNIEnv *env, jclass cls)
259 {
260
261 }
262
263
264 JNIEXPORT void JNICALL
265 Java_java_awt_MenuComponent_initIDs(JNIEnv *env, jclass cls)
266 {
267 menuComponentIDs.appContext =
268 (*env)->GetFieldID(env, cls, "appContext", "Lsun/awt/AppContext;");
269 }
270
271 JNIEXPORT void JNICALL
272 Java_java_awt_Cursor_initIDs(JNIEnv *env, jclass cls)
273 {
274 }
275
276
277 JNIEXPORT void JNICALL Java_java_awt_MenuItem_initIDs
278 (JNIEnv *env, jclass cls)
279 {
280 }
281
282
283 JNIEXPORT void JNICALL Java_java_awt_Menu_initIDs
284 (JNIEnv *env, jclass cls)
285 {
286 }
287
288 JNIEXPORT void JNICALL
289 Java_java_awt_TextArea_initIDs
290 (JNIEnv *env, jclass cls)
291 {
292 }
293
294
295 JNIEXPORT void JNICALL
296 Java_java_awt_Checkbox_initIDs
297 (JNIEnv *env, jclass cls)
298 {
299 }
300
301
302 JNIEXPORT void JNICALL Java_java_awt_ScrollPane_initIDs
303 (JNIEnv *env, jclass cls)
304 {
305 }
306
307 JNIEXPORT void JNICALL
308 Java_java_awt_TextField_initIDs
309 (JNIEnv *env, jclass cls)
310 {
311 }
312
313 JNIEXPORT jboolean JNICALL AWTIsHeadless() {
314 return JNI_FALSE;
315 }
316
317 JNIEXPORT void JNICALL Java_java_awt_Dialog_initIDs (JNIEnv *env, jclass cls)
318 {
319 }
320
321
322 /* ========================== Begin poll section ================================ */
323
324 // Includes
325
326 #include <sys/time.h>
327 #include <limits.h>
328 #include <locale.h>
329 #include <pthread.h>
330
331 #include <dlfcn.h>
332 #include <fcntl.h>
333
334 #include <poll.h>
335 #ifndef POLLRDNORM
336 #define POLLRDNORM POLLIN
337 #endif
338
339 // Prototypes
340
341 static void waitForEvents(JNIEnv *, jlong);
342 static void awt_pipe_init();
343 static Boolean performPoll(JNIEnv *, jlong);
344 static void wakeUp();
345 static void update_poll_timeout(int timeout_control);
346 static uint32_t get_poll_timeout(jlong nextTaskTime);
347
348 // Defines
349
350 #ifndef bzero
351 #define bzero(a,b) memset(a, 0, b)
352 #endif
353
354 #define AWT_POLL_BUFSIZE 100 /* bytes */
355 #define AWT_READPIPE (awt_pipe_fds[0])
356 #define AWT_WRITEPIPE (awt_pipe_fds[1])
357
358 #define DEF_AWT_MAX_POLL_TIMEOUT ((uint32_t)500) /* milliseconds */
359 #define DEF_AWT_FLUSH_TIMEOUT ((uint32_t)100) /* milliseconds */
360 #define AWT_MIN_POLL_TIMEOUT ((uint32_t)0) /* milliseconds */
361
362 #define TIMEOUT_TIMEDOUT 0
363 #define TIMEOUT_EVENTS 1
364
365 /* awt_poll_alg - AWT Poll Events Aging Algorithms */
366 #define AWT_POLL_FALSE 1
367 #define AWT_POLL_AGING_SLOW 2
368 #define AWT_POLL_AGING_FAST 3
369
370 #define AWT_POLL_THRESHOLD 1000 // msec, Block if delay is larger
371 #define AWT_POLL_BLOCK -1 // cause poll() block
372
373 // Static fields
374
375 static int awt_poll_alg = AWT_POLL_AGING_SLOW;
376
377 static uint32_t AWT_FLUSH_TIMEOUT = DEF_AWT_FLUSH_TIMEOUT; /* milliseconds */
378 static uint32_t AWT_MAX_POLL_TIMEOUT = DEF_AWT_MAX_POLL_TIMEOUT; /* milliseconds */
379 static pthread_t awt_MainThread = 0;
380 static int32_t awt_pipe_fds[2]; /* fds for wkaeup pipe */
381 static Boolean awt_pipe_inited = False; /* make sure pipe is initialized before write */
382 static jlong awt_next_flush_time = 0LL; /* 0 == no scheduled flush */
383 static jlong awt_last_flush_time = 0LL; /* 0 == no scheduled flush */
384 static uint32_t curPollTimeout;
385 static struct pollfd pollFds[2];
386 static jlong poll_sleep_time = 0LL; // Used for tracing
387 static jlong poll_wakeup_time = 0LL; // Used for tracing
388
389 // AWT static poll timeout. Zero means "not set", aging algorithm is
390 // used. Static poll timeout values higher than 50 cause application
391 // look "slow" - they don't respond to user request fast
392 // enough. Static poll timeout value less than 10 are usually
393 // considered by schedulers as zero, so this might cause unnecessary
394 // CPU consumption by Java. The values between 10 - 50 are suggested
395 // for single client desktop configurations. For SunRay servers, it
396 // is highly recomended to use aging algorithm (set static poll timeout
397 // to 0).
398 static int32_t static_poll_timeout = 0;
399
400 static Bool isMainThread() {
401 return awt_MainThread == pthread_self();
402 }
403
404 /*
405 * Creates the AWT utility pipe. This pipe exists solely so that
406 * we can cause the main event thread to wake up from a poll() or
407 * select() by writing to this pipe.
408 */
409 static void
410 awt_pipe_init() {
411
412 if (awt_pipe_inited) {
413 return;
414 }
415
416 if ( pipe ( awt_pipe_fds ) == 0 )
417 {
418 /*
419 ** the write wakes us up from the infinite sleep, which
420 ** then we cause a delay of AWT_FLUSHTIME and then we
421 ** flush.
422 */
423 int32_t flags = 0;
424 /* set the pipe to be non-blocking */
425 flags = fcntl ( AWT_READPIPE, F_GETFL, 0 );
426 fcntl( AWT_READPIPE, F_SETFL, flags | O_NDELAY | O_NONBLOCK );
427 flags = fcntl ( AWT_WRITEPIPE, F_GETFL, 0 );
428 fcntl( AWT_WRITEPIPE, F_SETFL, flags | O_NDELAY | O_NONBLOCK );
429 awt_pipe_inited = True;
430 }
431 else
432 {
433 AWT_READPIPE = -1;
434 AWT_WRITEPIPE = -1;
435 }
436
437
438 } /* awt_pipe_init() */
439
440 /**
441 * Reads environment variables to initialize timeout fields.
442 */
443 static void readEnv() {
444 char * value;
445 int tmp_poll_alg;
446 static Boolean env_read = False;
447 if (env_read) return;
448
449 env_read = True;
450
451 value = getenv("_AWT_MAX_POLL_TIMEOUT");
452 if (value != NULL) {
453 AWT_MAX_POLL_TIMEOUT = atoi(value);
454 if (AWT_MAX_POLL_TIMEOUT == 0) {
455 AWT_MAX_POLL_TIMEOUT = DEF_AWT_MAX_POLL_TIMEOUT;
456 }
457 }
458 curPollTimeout = AWT_MAX_POLL_TIMEOUT/2;
459
460 value = getenv("_AWT_FLUSH_TIMEOUT");
461 if (value != NULL) {
462 AWT_FLUSH_TIMEOUT = atoi(value);
463 if (AWT_FLUSH_TIMEOUT == 0) {
464 AWT_FLUSH_TIMEOUT = DEF_AWT_FLUSH_TIMEOUT;
465 }
466 }
467
468 value = getenv("_AWT_POLL_TRACING");
469 if (value != NULL) {
470 tracing = atoi(value);
471 }
472
473 value = getenv("_AWT_STATIC_POLL_TIMEOUT");
474 if (value != NULL) {
475 static_poll_timeout = atoi(value);
476 }
477 if (static_poll_timeout != 0) {
478 curPollTimeout = static_poll_timeout;
479 }
480
481 // non-blocking poll()
482 value = getenv("_AWT_POLL_ALG");
483 if (value != NULL) {
484 tmp_poll_alg = atoi(value);
485 switch(tmp_poll_alg) {
486 case AWT_POLL_FALSE:
487 case AWT_POLL_AGING_SLOW:
488 case AWT_POLL_AGING_FAST:
489 awt_poll_alg = tmp_poll_alg;
490 break;
491 default:
492 PRINT("Unknown value of _AWT_POLL_ALG, assuming Slow Aging Algorithm by default");
493 awt_poll_alg = AWT_POLL_AGING_SLOW;
494 break;
495 }
496 }
497 }
498
499 /**
500 * Returns the amount of milliseconds similar to System.currentTimeMillis()
501 */
502 static jlong
503 awtJNI_TimeMillis(void)
504 {
505 struct timeval t;
506
507 gettimeofday(&t, 0);
508
509 return jlong_add(jlong_mul(jint_to_jlong(t.tv_sec), jint_to_jlong(1000)),
510 jint_to_jlong(t.tv_usec / 1000));
511 }
512
513 /**
514 * Updates curPollTimeout according to the aging algorithm.
515 * @param timeout_control Either TIMEOUT_TIMEDOUT or TIMEOUT_EVENTS
516 */
517 static void update_poll_timeout(int timeout_control) {
518 PRINT2("tout: %d\n", timeout_control);
519
520 // If static_poll_timeout is set, curPollTimeout has the fixed value
521 if (static_poll_timeout != 0) return;
522
523 // Update it otherwise
524
525 switch(awt_poll_alg) {
526 case AWT_POLL_AGING_SLOW:
527 if (timeout_control == TIMEOUT_TIMEDOUT) {
528 /* add 1/4 (plus 1, in case the division truncates to 0) */
529 curPollTimeout += ((curPollTimeout>>2) + 1);
530 curPollTimeout = min(AWT_MAX_POLL_TIMEOUT, curPollTimeout);
531 } else if (timeout_control == TIMEOUT_EVENTS) {
532 /* subtract 1/4 (plus 1, in case the division truncates to 0) */
533 if (curPollTimeout > 0) {
534 curPollTimeout -= ((curPollTimeout>>2) + 1);
535 curPollTimeout = max(AWT_MIN_POLL_TIMEOUT, curPollTimeout);
536 }
537 }
538 break;
539 case AWT_POLL_AGING_FAST:
540 if (timeout_control == TIMEOUT_TIMEDOUT) {
541 curPollTimeout += ((curPollTimeout>>2) + 1);
542 curPollTimeout = min(AWT_MAX_POLL_TIMEOUT, curPollTimeout);
543 if((int)curPollTimeout > AWT_POLL_THRESHOLD || (int)curPollTimeout == AWT_POLL_BLOCK)
544 curPollTimeout = AWT_POLL_BLOCK;
545 } else if (timeout_control == TIMEOUT_EVENTS) {
546 curPollTimeout = max(AWT_MIN_POLL_TIMEOUT, 1);
547 }
548 break;
549 }
550 }
551
552 /*
553 * Gets the best timeout for the next call to poll().
554 *
555 * @param nextTaskTime -1, if there are no tasks; next time when
556 * timeout task needs to be run, in millis(of currentTimeMillis)
557 */
558 static uint32_t get_poll_timeout(jlong nextTaskTime)
559 {
560 uint32_t ret_timeout = 0;
561 uint32_t timeout;
562 uint32_t taskTimeout;
563 uint32_t flushTimeout;
564
565 jlong curTime = awtJNI_TimeMillis();
566 timeout = curPollTimeout;
567 switch(awt_poll_alg) {
568 case AWT_POLL_AGING_SLOW:
569 case AWT_POLL_AGING_FAST:
570 taskTimeout = (nextTaskTime == -1) ? AWT_MAX_POLL_TIMEOUT : (uint32_t)max(0, (int32_t)(nextTaskTime - curTime));
571 flushTimeout = (awt_next_flush_time > 0) ? (uint32_t)max(0, (int32_t)(awt_next_flush_time - curTime)) : AWT_MAX_POLL_TIMEOUT;
572
573 PRINT2("to: %d, ft: %d, to: %d, tt: %d, mil: %d\n", taskTimeout, flushTimeout, timeout, (int)nextTaskTime, (int)curTime);
574
575 // Adjust timeout to flush_time and task_time
576 ret_timeout = min(flushTimeout, min(taskTimeout, timeout));
577 if((int)curPollTimeout == AWT_POLL_BLOCK)
578 ret_timeout = AWT_POLL_BLOCK;
579 break;
580
581 case AWT_POLL_FALSE:
582 ret_timeout = (nextTaskTime > curTime) ?
583 (nextTaskTime - curTime) :
584 ((nextTaskTime == -1) ? -1 : 0);
585 break;
586 }
587
588 return ret_timeout;
589
590 } /* get_poll_timeout() */
591
592 /*
593 * Waits for X events to appear on the pipe. Returns only when
594 * it is likely (but not definite) that there are events waiting to
595 * be processed.
596 *
597 * This routine also flushes the outgoing X queue, when the
598 * awt_next_flush_time has been reached.
599 *
600 * If fdAWTPipe is greater or equal than zero the routine also
601 * checks if there are events pending on the putback queue.
602 */
603 void
604 waitForEvents(JNIEnv *env, jlong nextTaskTime) {
605 if (performPoll(env, nextTaskTime)
606 && (awt_next_flush_time > 0)
607 && (awtJNI_TimeMillis() >= awt_next_flush_time)) {
608
609 XFlush(awt_display);
610 awt_last_flush_time = awt_next_flush_time;
611 awt_next_flush_time = 0LL;
612 }
613 } /* waitForEvents() */
614
615 JNIEXPORT void JNICALL Java_sun_awt_X11_XToolkit_waitForEvents (JNIEnv *env, jclass class, jlong nextTaskTime) {
616 waitForEvents(env, nextTaskTime);
617 }
618
619 JNIEXPORT void JNICALL Java_sun_awt_X11_XToolkit_awt_1toolkit_1init (JNIEnv *env, jclass class) {
620 awt_MainThread = pthread_self();
621
622 awt_pipe_init();
623 readEnv();
624 }
625
626 JNIEXPORT void JNICALL Java_sun_awt_X11_XToolkit_awt_1output_1flush (JNIEnv *env, jclass class) {
627 awt_output_flush();
628 }
629
630 JNIEXPORT void JNICALL Java_sun_awt_X11_XToolkit_wakeup_1poll (JNIEnv *env, jclass class) {
631 wakeUp();
632 }
633
634 /*
635 * Polls both the X pipe and our AWT utility pipe. Returns
636 * when there is data on one of the pipes, or the operation times
637 * out.
638 *
639 * Not all Xt events come across the X pipe (e.g., timers
640 * and alternate inputs), so we must time out every now and
641 * then to check the Xt event queue.
642 *
643 * The fdAWTPipe will be empty when this returns.
644 */
645 static Boolean
646 performPoll(JNIEnv *env, jlong nextTaskTime) {
647 static Bool pollFdsInited = False;
648 static char read_buf[AWT_POLL_BUFSIZE + 1]; /* dummy buf to empty pipe */
649
650 uint32_t timeout = get_poll_timeout(nextTaskTime);
651 int32_t result;
652
653 if (!pollFdsInited) {
654 pollFds[0].fd = ConnectionNumber(awt_display);
655 pollFds[0].events = POLLRDNORM;
656 pollFds[0].revents = 0;
657
658 pollFds[1].fd = AWT_READPIPE;
659 pollFds[1].events = POLLRDNORM;
660 pollFds[1].revents = 0;
661 pollFdsInited = True;
662 } else {
663 pollFds[0].revents = 0;
664 pollFds[1].revents = 0;
665 }
666
667 AWT_NOFLUSH_UNLOCK();
668
669 /* ACTUALLY DO THE POLL() */
670 if (timeout == 0) {
671 // be sure other threads get a chance
672 if (!awtJNI_ThreadYield(env)) {
673 return FALSE;
674 }
675 }
676
677 if (tracing) poll_sleep_time = awtJNI_TimeMillis();
678 result = poll( pollFds, 2, (int32_t) timeout );
679 if (tracing) poll_wakeup_time = awtJNI_TimeMillis();
680 PRINT("%d of %d, res: %d\n", (int)(poll_wakeup_time-poll_sleep_time), (int)timeout, result);
681
682 AWT_LOCK();
683 if (result == 0) {
684 /* poll() timed out -- update timeout value */
685 update_poll_timeout(TIMEOUT_TIMEDOUT);
686 PRINT2("performPoll(): TIMEOUT_TIMEDOUT curPollTimeout = %d \n", curPollTimeout);
687 }
688 if (pollFds[1].revents) {
689 int count;
690 PRINT("Woke up\n");
691 /* There is data on the AWT pipe - empty it */
692 do {
693 count = read(AWT_READPIPE, read_buf, AWT_POLL_BUFSIZE );
694 } while (count == AWT_POLL_BUFSIZE );
695 PRINT2("performPoll(): data on the AWT pipe: curPollTimeout = %d \n", curPollTimeout);
696 }
697 if (pollFds[0].revents) {
698 // Events in X pipe
699 update_poll_timeout(TIMEOUT_EVENTS);
700 PRINT2("performPoll(): TIMEOUT_EVENTS curPollTimeout = %d \n", curPollTimeout);
701 }
702 return TRUE;
703
704 } /* performPoll() */
705
706 /**
707 * Schedules next auto-flush event or performs forced flush depending
708 * on the time of the previous flush.
709 */
710 void awt_output_flush() {
711 if (awt_next_flush_time == 0) {
712 JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
713
714 jlong curTime = awtJNI_TimeMillis(); // current time
715 jlong l_awt_last_flush_time = awt_last_flush_time; // last time we flushed queue
716 jlong next_flush_time = l_awt_last_flush_time + AWT_FLUSH_TIMEOUT;
717
718 if (curTime >= next_flush_time) {
719 // Enough time passed from last flush
720 PRINT("f1\n");
721 AWT_LOCK();
722 XFlush(awt_display);
723 awt_last_flush_time = curTime;
724 AWT_NOFLUSH_UNLOCK();
725 } else {
726 awt_next_flush_time = next_flush_time;
727 PRINT("f2\n");
728 wakeUp();
729 }
730 }
731 }
732
733
734 /**
735 * Wakes-up poll() in performPoll
736 */
737 static void wakeUp() {
738 static char wakeUp_char = 'p';
739 if (!isMainThread() && awt_pipe_inited) {
740 write ( AWT_WRITEPIPE, &wakeUp_char, 1 );
741 }
742 }
743
744
745 /* ========================== End poll section ================================= */
746
747 /*
748 * Class: java_awt_KeyboardFocusManager
749 * Method: initIDs
750 * Signature: ()V
751 */
752 JNIEXPORT void JNICALL
753 Java_java_awt_KeyboardFocusManager_initIDs
754 (JNIEnv *env, jclass cls)
755 {
756 }
757
758 /*
759 * Class: sun_awt_X11_XToolkit
760 * Method: getEnv
761 * Signature: (Ljava/lang/String;)Ljava/lang/String;
762 */
763 JNIEXPORT jstring JNICALL Java_sun_awt_X11_XToolkit_getEnv
764 (JNIEnv *env , jclass clazz, jstring key) {
765 char *ptr = NULL;
766 const char *keystr = NULL;
767 jstring ret = NULL;
768
769 keystr = JNU_GetStringPlatformChars(env, key, NULL);
770 if (keystr) {
771 ptr = getenv(keystr);
772 if (ptr) {
773 ret = JNU_NewStringPlatform(env, (const char *) ptr);
774 }
775 JNU_ReleaseStringPlatformChars(env, key, (const char*)keystr);
776 }
777 return ret;
778 }
779
780 #ifdef __linux__
781 void print_stack(void)
782 {
783 void *array[10];
784 size_t size;
785 char **strings;
786 size_t i;
787
788 size = backtrace (array, 10);
789 strings = backtrace_symbols (array, size);
790
791 fprintf (stderr, "Obtained %zd stack frames.\n", size);
792
793 for (i = 0; i < size; i++)
794 fprintf (stderr, "%s\n", strings[i]);
795
796 free (strings);
797 }
798 #endif
799
800 Window get_xawt_root_shell(JNIEnv *env) {
801 static jclass classXRootWindow = NULL;
802 static jmethodID methodGetXRootWindow = NULL;
803 static Window xawt_root_shell = None;
804
805 if (xawt_root_shell == None){
806 if (classXRootWindow == NULL){
807 jclass cls_tmp = (*env)->FindClass(env, "sun/awt/X11/XRootWindow");
808 if (!JNU_IsNull(env, cls_tmp)) {
809 classXRootWindow = (jclass)(*env)->NewGlobalRef(env, cls_tmp);
810 (*env)->DeleteLocalRef(env, cls_tmp);
811 }
812 }
813 if( classXRootWindow != NULL) {
814 methodGetXRootWindow = (*env)->GetStaticMethodID(env, classXRootWindow, "getXRootWindow", "()J");
815 }
816 if( classXRootWindow != NULL && methodGetXRootWindow !=NULL ) {
817 xawt_root_shell = (Window) (*env)->CallStaticLongMethod(env, classXRootWindow, methodGetXRootWindow);
818 }
819 if ((*env)->ExceptionCheck(env)) {
820 (*env)->ExceptionDescribe(env);
821 (*env)->ExceptionClear(env);
822 }
823 }
824 return xawt_root_shell;
825 }
826
827 /*
828 * Old, compatibility, backdoor for DT. This is a different
829 * implementation. It keeps the signature, but acts on
830 * awt_root_shell, not the frame passed as an argument. Note, that
831 * the code that uses the old backdoor doesn't work correctly with
832 * gnome session proxy that checks for WM_COMMAND when the window is
833 * firts mapped, because DT code calls this old backdoor *after* the
834 * frame is shown or it would get NPE with old AWT (previous
835 * implementation of this backdoor) otherwise. Old style session
836 * managers (e.g. CDE) that check WM_COMMAND only during session
837 * checkpoint should work fine, though.
838 *
839 * NB: The function name looks deceptively like a JNI native method
840 * name. It's not! It's just a plain function.
841 */
842
843 JNIEXPORT void JNICALL
844 Java_sun_awt_motif_XsessionWMcommand(JNIEnv *env, jobject this,
845 jobject frame, jstring jcommand)
846 {
847 const char *command;
848 XTextProperty text_prop;
849 char *c[1];
850 int32_t status;
851 Window xawt_root_window;
852
853 AWT_LOCK();
854 xawt_root_window = get_xawt_root_shell(env);
855
856 if ( xawt_root_window == None ) {
857 AWT_UNLOCK();
858 JNU_ThrowNullPointerException(env, "AWT root shell is unrealized");
859 return;
860 }
861
862 command = (char *) JNU_GetStringPlatformChars(env, jcommand, NULL);
863 if (command != NULL) {
864 c[0] = (char *)command;
865 status = XmbTextListToTextProperty(awt_display, c, 1,
866 XStdICCTextStyle, &text_prop);
867
868 if (status == Success || status > 0) {
869 XSetTextProperty(awt_display, xawt_root_window,
870 &text_prop, XA_WM_COMMAND);
871 if (text_prop.value != NULL)
872 XFree(text_prop.value);
873 }
874 JNU_ReleaseStringPlatformChars(env, jcommand, command);
875 }
876 AWT_UNLOCK();
877 }
878
879
880 /*
881 * New DT backdoor to set WM_COMMAND. New code should use this
882 * backdoor and call it *before* the first frame is shown so that
883 * gnome session proxy can correctly handle it.
884 *
885 * NB: The function name looks deceptively like a JNI native method
886 * name. It's not! It's just a plain function.
887 */
888 JNIEXPORT void JNICALL
889 Java_sun_awt_motif_XsessionWMcommand_New(JNIEnv *env, jobjectArray jarray)
890 {
891 jsize length;
892 char ** array;
893 XTextProperty text_prop;
894 int status;
895 Window xawt_root_window;
896
897 AWT_LOCK();
898 xawt_root_window = get_xawt_root_shell(env);
899
900 if (xawt_root_window == None) {
901 AWT_UNLOCK();
902 JNU_ThrowNullPointerException(env, "AWT root shell is unrealized");
903 return;
904 }
905
906 array = stringArrayToNative(env, jarray, &length);
907
908 if (array != NULL) {
909 status = XmbTextListToTextProperty(awt_display, array, length,
910 XStdICCTextStyle, &text_prop);
911 if (status < 0) {
912 switch (status) {
913 case XNoMemory:
914 JNU_ThrowOutOfMemoryError(env,
915 "XmbTextListToTextProperty: XNoMemory");
916 break;
917 case XLocaleNotSupported:
918 JNU_ThrowInternalError(env,
919 "XmbTextListToTextProperty: XLocaleNotSupported");
920 break;
921 case XConverterNotFound:
922 JNU_ThrowNullPointerException(env,
923 "XmbTextListToTextProperty: XConverterNotFound");
924 break;
925 default:
926 JNU_ThrowInternalError(env,
927 "XmbTextListToTextProperty: unknown error");
928 }
929 } else {
930 XSetTextProperty(awt_display, xawt_root_window,
931 &text_prop, XA_WM_COMMAND);
932 }
933
934 if (text_prop.value != NULL)
935 XFree(text_prop.value);
936
937 freeNativeStringArray(array, length);
938 }
939 AWT_UNLOCK();
940 }
941
942 /*
943 * Class: java_awt_TrayIcon
944 * Method: initIDs
945 * Signature: ()V
946 */
947 JNIEXPORT void JNICALL Java_java_awt_TrayIcon_initIDs(JNIEnv *env , jclass clazz)
948 {
949 }
950
951
952 /*
953 * Class: java_awt_Cursor
954 * Method: finalizeImpl
955 * Signature: ()V
956 */
957 JNIEXPORT void JNICALL
958 Java_java_awt_Cursor_finalizeImpl(JNIEnv *env, jclass clazz, jlong pData)
959 {
960 Cursor xcursor;
961
962 xcursor = (Cursor)pData;
963 if (xcursor != None) {
964 AWT_LOCK();
965 XFreeCursor(awt_display, xcursor);
966 AWT_UNLOCK();
967 }
968 }
969
970
971 /*
972 * Class: sun_awt_X11_XToolkit
973 * Method: getNumberOfButtonsImpl
974 * Signature: ()I
975 */
976 JNIEXPORT jint JNICALL Java_sun_awt_X11_XToolkit_getNumberOfButtonsImpl
977 (JNIEnv * env, jobject cls){
978 if (num_buttons == 0) {
979 num_buttons = getNumButtons();
980 }
981 return num_buttons;
982 }
983
984 int32_t getNumButtons() {
985 int32_t major_opcode, first_event, first_error;
986 int32_t xinputAvailable;
987 int32_t numDevices, devIdx, clsIdx;
988 XDeviceInfo* devices;
989 XDeviceInfo* aDevice;
990 XButtonInfo* bInfo;
991 int32_t local_num_buttons = 0;
992
993 /* 4700242:
994 * If XTest is asked to press a non-existant mouse button
995 * (i.e. press Button3 on a system configured with a 2-button mouse),
996 * then a crash may happen. To avoid this, we use the XInput
997 * extension to query for the number of buttons on the XPointer, and check
998 * before calling XTestFakeButtonEvent().
999 */
1000 xinputAvailable = XQueryExtension(awt_display, INAME, &major_opcode, &first_event, &first_error);
1001 if (xinputAvailable) {
1002 DTRACE_PRINTLN3("RobotPeer: XQueryExtension(XINPUT) returns major_opcode = %d, first_event = %d, first_error = %d",
1003 major_opcode, first_event, first_error);
1004 devices = XListInputDevices(awt_display, &numDevices);
1005 for (devIdx = 0; devIdx < numDevices; devIdx++) {
1006 aDevice = &(devices[devIdx]);
1007 #ifdef IsXExtensionPointer
1008 if (aDevice->use == IsXExtensionPointer) {
1009 for (clsIdx = 0; clsIdx < aDevice->num_classes; clsIdx++) {
1010 if (aDevice->inputclassinfo[clsIdx].class == ButtonClass) {
1011 bInfo = (XButtonInfo*)(&(aDevice->inputclassinfo[clsIdx]));
1012 local_num_buttons = bInfo->num_buttons;
1013 DTRACE_PRINTLN1("RobotPeer: XPointer has %d buttons", num_buttons);
1014 break;
1015 }
1016 }
1017 break;
1018 }
1019 #endif
1020 if (local_num_buttons <= 0 ) {
1021 if (aDevice->use == IsXPointer) {
1022 for (clsIdx = 0; clsIdx < aDevice->num_classes; clsIdx++) {
1023 if (aDevice->inputclassinfo[clsIdx].class == ButtonClass) {
1024 bInfo = (XButtonInfo*)(&(aDevice->inputclassinfo[clsIdx]));
1025 local_num_buttons = bInfo->num_buttons;
1026 DTRACE_PRINTLN1("RobotPeer: XPointer has %d buttons", num_buttons);
1027 break;
1028 }
1029 }
1030 break;
1031 }
1032 }
1033 }
1034
1035 XFreeDeviceList(devices);
1036 }
1037 else {
1038 DTRACE_PRINTLN1("RobotPeer: XINPUT extension is unavailable, assuming %d mouse buttons", num_buttons);
1039 }
1040 if (local_num_buttons == 0 ) {
1041 local_num_buttons = 3;
1042 }
1043
1044 return local_num_buttons;
1045 }
1046
1047 /*
1048 * Class: sun_awt_X11_XWindowPeer
1049 * Method: getJvmPID
1050 * Signature: ()I
1051 */
1052 JNIEXPORT jint JNICALL Java_sun_awt_X11_XWindowPeer_getJvmPID
1053 (JNIEnv *env, jclass cls)
1054 {
1055 /* Return the JVM's PID. */
1056 return getpid();
1057 }
1058
1059 #ifndef HOST_NAME_MAX
1060 #define HOST_NAME_MAX 1024 /* Overestimated */
1061 #endif
1062
1063 /*
1064 * Class: sun_awt_X11_XWindowPeer
1065 * Method: getLocalHostname
1066 * Signature: ()Ljava/lang/String;
1067 */
1068 JNIEXPORT jstring JNICALL Java_sun_awt_X11_XWindowPeer_getLocalHostname
1069 (JNIEnv *env, jclass cls)
1070 {
1071 /* Return the machine's FQDN. */
1072 char hostname[HOST_NAME_MAX + 1];
1073 if (gethostname(hostname, HOST_NAME_MAX + 1) == 0) {
1074 hostname[HOST_NAME_MAX] = '\0';
1075 jstring res = (*env)->NewStringUTF(env, hostname);
1076 return res;
1077 }
1078
1079 return (jstring)NULL;
1080 }