src/gba/supervisor/thread.c (view raw)
1/* Copyright (c) 2013-2015 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include "thread.h"
7
8#include "arm.h"
9#include "gba/gba.h"
10#include "gba/cheats.h"
11#include "gba/serialize.h"
12#include "gba/context/config.h"
13#include "gba/rr/mgm.h"
14#include "gba/rr/vbm.h"
15
16#include "debugger/debugger.h"
17
18#include "util/patch.h"
19#include "util/vfs.h"
20
21#include "platform/commandline.h"
22
23#include <signal.h>
24
25static void _loadGameDir(struct GBAThread* threadContext);
26
27static const float _defaultFPSTarget = 60.f;
28
29#ifndef DISABLE_THREADING
30#ifdef USE_PTHREADS
31static pthread_key_t _contextKey;
32static pthread_once_t _contextOnce = PTHREAD_ONCE_INIT;
33
34static void _createTLS(void) {
35 pthread_key_create(&_contextKey, 0);
36}
37#elif _WIN32
38static DWORD _contextKey;
39static INIT_ONCE _contextOnce = INIT_ONCE_STATIC_INIT;
40
41static BOOL CALLBACK _createTLS(PINIT_ONCE once, PVOID param, PVOID* context) {
42 UNUSED(once);
43 UNUSED(param);
44 UNUSED(context);
45 _contextKey = TlsAlloc();
46 return TRUE;
47}
48#endif
49
50static void _changeState(struct GBAThread* threadContext, enum ThreadState newState, bool broadcast) {
51 MutexLock(&threadContext->stateMutex);
52 threadContext->state = newState;
53 if (broadcast) {
54 ConditionWake(&threadContext->stateCond);
55 }
56 MutexUnlock(&threadContext->stateMutex);
57}
58
59static void _waitOnInterrupt(struct GBAThread* threadContext) {
60 while (threadContext->state == THREAD_INTERRUPTED) {
61 ConditionWait(&threadContext->stateCond, &threadContext->stateMutex);
62 }
63}
64
65static void _waitUntilNotState(struct GBAThread* threadContext, enum ThreadState oldState) {
66 MutexLock(&threadContext->sync.videoFrameMutex);
67 bool videoFrameWait = threadContext->sync.videoFrameWait;
68 threadContext->sync.videoFrameWait = false;
69 MutexUnlock(&threadContext->sync.videoFrameMutex);
70
71 while (threadContext->state == oldState) {
72 MutexUnlock(&threadContext->stateMutex);
73
74 MutexLock(&threadContext->sync.videoFrameMutex);
75 ConditionWake(&threadContext->sync.videoFrameRequiredCond);
76 MutexUnlock(&threadContext->sync.videoFrameMutex);
77
78 MutexLock(&threadContext->sync.audioBufferMutex);
79 ConditionWake(&threadContext->sync.audioRequiredCond);
80 MutexUnlock(&threadContext->sync.audioBufferMutex);
81
82 MutexLock(&threadContext->stateMutex);
83 ConditionWake(&threadContext->stateCond);
84 }
85
86 MutexLock(&threadContext->sync.videoFrameMutex);
87 threadContext->sync.videoFrameWait = videoFrameWait;
88 MutexUnlock(&threadContext->sync.videoFrameMutex);
89}
90
91static void _pauseThread(struct GBAThread* threadContext, bool onThread) {
92 threadContext->state = THREAD_PAUSING;
93 if (!onThread) {
94 _waitUntilNotState(threadContext, THREAD_PAUSING);
95 }
96}
97
98struct GBAThreadStop {
99 struct GBAStopCallback d;
100 struct GBAThread* p;
101};
102
103static void _stopCallback(struct GBAStopCallback* stop) {
104 struct GBAThreadStop* callback = (struct GBAThreadStop*) stop;
105 if (callback->p->stopCallback(callback->p)) {
106 _changeState(callback->p, THREAD_EXITING, false);
107 }
108}
109
110static THREAD_ENTRY _GBAThreadRun(void* context) {
111#ifdef USE_PTHREADS
112 pthread_once(&_contextOnce, _createTLS);
113#elif _WIN32
114 InitOnceExecuteOnce(&_contextOnce, _createTLS, NULL, 0);
115#endif
116
117 struct GBA gba;
118 struct ARMCore cpu;
119 struct Patch patch;
120 struct GBACheatDevice cheatDevice;
121 struct GBAThread* threadContext = context;
122 struct ARMComponent* components[GBA_COMPONENT_MAX] = { 0 };
123 struct GBARRContext* movie = 0;
124 int numComponents = GBA_COMPONENT_MAX;
125
126 ThreadSetName("CPU Thread");
127
128#if !defined(_WIN32) && defined(USE_PTHREADS)
129 sigset_t signals;
130 sigemptyset(&signals);
131 pthread_sigmask(SIG_SETMASK, &signals, 0);
132#endif
133
134 GBACreate(&gba);
135 ARMSetComponents(&cpu, &gba.d, numComponents, components);
136 ARMInit(&cpu);
137 gba.sync = &threadContext->sync;
138 threadContext->gba = &gba;
139 threadContext->cpu = &cpu;
140 gba.logLevel = threadContext->logLevel;
141 gba.logHandler = threadContext->logHandler;
142 gba.stream = threadContext->stream;
143 gba.video.frameskip = threadContext->frameskip;
144
145 struct GBAThreadStop stop;
146 if (threadContext->stopCallback) {
147 stop.d.stop = _stopCallback;
148 stop.p = threadContext;
149 gba.stopCallback = &stop.d;
150 }
151
152 gba.idleOptimization = threadContext->idleOptimization;
153#ifdef USE_PTHREADS
154 pthread_setspecific(_contextKey, threadContext);
155#elif _WIN32
156 TlsSetValue(_contextKey, threadContext);
157#endif
158
159 if (threadContext->audioBuffers) {
160 GBAAudioResizeBuffer(&gba.audio, threadContext->audioBuffers);
161 } else {
162 threadContext->audioBuffers = GBA_AUDIO_SAMPLES;
163 }
164
165 if (threadContext->renderer) {
166 GBAVideoAssociateRenderer(&gba.video, threadContext->renderer);
167 }
168
169 if (threadContext->rom) {
170 GBALoadROM(&gba, threadContext->rom, threadContext->save, threadContext->fname);
171
172 struct GBACartridgeOverride override;
173 const struct GBACartridge* cart = (const struct GBACartridge*) gba.memory.rom;
174 memcpy(override.id, &cart->id, sizeof(override.id));
175 if (GBAOverrideFind(threadContext->overrides, &override)) {
176 GBAOverrideApply(&gba, &override);
177 }
178 if (threadContext->hasOverride) {
179 GBAOverrideApply(&gba, &threadContext->override);
180 }
181
182 if (threadContext->patch && loadPatch(threadContext->patch, &patch)) {
183 GBAApplyPatch(&gba, &patch);
184 }
185 }
186
187 if (threadContext->bios && GBAIsBIOS(threadContext->bios)) {
188 GBALoadBIOS(&gba, threadContext->bios);
189 }
190
191 if (threadContext->movie) {
192 struct VDir* movieDir = VDirOpen(threadContext->movie);
193#ifdef USE_LIBZIP
194 if (!movieDir) {
195 movieDir = VDirOpenZip(threadContext->movie, 0);
196 }
197#endif
198 if (movieDir) {
199 struct GBAMGMContext* mgm = malloc(sizeof(*mgm));
200 GBAMGMContextCreate(mgm);
201 if (!GBAMGMSetStream(mgm, movieDir)) {
202 mgm->d.destroy(&mgm->d);
203 } else {
204 movie = &mgm->d;
205 }
206 } else {
207 struct VFile* movieFile = VFileOpen(threadContext->movie, O_RDONLY);
208 if (movieFile) {
209 struct GBAVBMContext* vbm = malloc(sizeof(*vbm));
210 GBAVBMContextCreate(vbm);
211 if (!GBAVBMSetStream(vbm, movieFile)) {
212 vbm->d.destroy(&vbm->d);
213 } else {
214 movie = &vbm->d;
215 }
216 }
217 }
218 }
219
220 ARMReset(&cpu);
221
222 if (movie) {
223 gba.rr = movie;
224 movie->startPlaying(movie, false);
225 GBARRInitPlay(&gba);
226 }
227
228 if (threadContext->skipBios && gba.memory.rom) {
229 GBASkipBIOS(&cpu);
230 }
231
232 if (!threadContext->cheats) {
233 GBACheatDeviceCreate(&cheatDevice);
234 threadContext->cheats = &cheatDevice;
235 }
236 if (threadContext->cheatsFile) {
237 GBACheatParseFile(threadContext->cheats, threadContext->cheatsFile);
238 }
239 GBACheatAttachDevice(&gba, threadContext->cheats);
240
241 if (threadContext->debugger) {
242 threadContext->debugger->log = GBADebuggerLogShim;
243 GBAAttachDebugger(&gba, threadContext->debugger);
244 ARMDebuggerEnter(threadContext->debugger, DEBUGGER_ENTER_ATTACHED, 0);
245 }
246
247 GBASIOSetDriverSet(&gba.sio, &threadContext->sioDrivers);
248
249 if (threadContext->volume == 0) {
250 threadContext->volume = GBA_AUDIO_VOLUME_MAX;
251 }
252 if (threadContext->mute) {
253 gba.audio.masterVolume = 0;
254 } else {
255 gba.audio.masterVolume = threadContext->volume;
256 }
257
258 gba.keySource = &threadContext->activeKeys;
259
260 if (threadContext->startCallback) {
261 threadContext->startCallback(threadContext);
262 }
263
264 _changeState(threadContext, THREAD_RUNNING, true);
265
266 while (threadContext->state < THREAD_EXITING) {
267 if (threadContext->debugger) {
268 struct ARMDebugger* debugger = threadContext->debugger;
269 ARMDebuggerRun(debugger);
270 if (debugger->state == DEBUGGER_SHUTDOWN) {
271 _changeState(threadContext, THREAD_EXITING, false);
272 }
273 } else {
274 while (threadContext->state == THREAD_RUNNING) {
275 ARMRunLoop(&cpu);
276 }
277 }
278
279 int resetScheduled = 0;
280 MutexLock(&threadContext->stateMutex);
281 while (threadContext->state > THREAD_RUNNING && threadContext->state < THREAD_EXITING) {
282 if (threadContext->state == THREAD_PAUSING) {
283 threadContext->state = THREAD_PAUSED;
284 ConditionWake(&threadContext->stateCond);
285 }
286 if (threadContext->state == THREAD_INTERRUPTING) {
287 threadContext->state = THREAD_INTERRUPTED;
288 ConditionWake(&threadContext->stateCond);
289 }
290 if (threadContext->state == THREAD_RUN_ON) {
291 if (threadContext->run) {
292 threadContext->run(threadContext);
293 }
294 threadContext->state = threadContext->savedState;
295 ConditionWake(&threadContext->stateCond);
296 }
297 if (threadContext->state == THREAD_RESETING) {
298 threadContext->state = THREAD_RUNNING;
299 resetScheduled = 1;
300 }
301 while (threadContext->state == THREAD_PAUSED || threadContext->state == THREAD_INTERRUPTED) {
302 ConditionWait(&threadContext->stateCond, &threadContext->stateMutex);
303 }
304 }
305 MutexUnlock(&threadContext->stateMutex);
306 if (resetScheduled) {
307 ARMReset(&cpu);
308 if (threadContext->skipBios && gba.memory.rom) {
309 GBASkipBIOS(&cpu);
310 }
311 }
312 }
313
314 while (threadContext->state < THREAD_SHUTDOWN) {
315 _changeState(threadContext, THREAD_SHUTDOWN, false);
316 }
317
318 if (threadContext->cleanCallback) {
319 threadContext->cleanCallback(threadContext);
320 }
321
322 threadContext->gba = 0;
323 ARMDeinit(&cpu);
324 GBADestroy(&gba);
325 if (&cheatDevice == threadContext->cheats) {
326 GBACheatDeviceDestroy(&cheatDevice);
327 }
328
329 if (movie) {
330 movie->destroy(movie);
331 free(movie);
332 }
333
334 threadContext->sync.videoFrameOn = false;
335 ConditionWake(&threadContext->sync.videoFrameAvailableCond);
336 ConditionWake(&threadContext->sync.audioRequiredCond);
337
338 return 0;
339}
340
341void GBAMapOptionsToContext(const struct GBAOptions* opts, struct GBAThread* threadContext) {
342 if (opts->useBios) {
343 threadContext->bios = VFileOpen(opts->bios, O_RDONLY);
344 } else {
345 threadContext->bios = 0;
346 }
347 threadContext->frameskip = opts->frameskip;
348 threadContext->volume = opts->volume;
349 threadContext->mute = opts->mute;
350 threadContext->logLevel = opts->logLevel;
351 if (opts->rewindEnable) {
352 threadContext->rewindBufferCapacity = opts->rewindBufferCapacity;
353 threadContext->rewindBufferInterval = opts->rewindBufferInterval;
354 } else {
355 threadContext->rewindBufferCapacity = 0;
356 }
357 threadContext->skipBios = opts->skipBios;
358 threadContext->sync.audioWait = opts->audioSync;
359 threadContext->sync.videoFrameWait = opts->videoSync;
360
361 if (opts->fpsTarget) {
362 threadContext->fpsTarget = opts->fpsTarget;
363 }
364
365 if (opts->audioBuffers) {
366 threadContext->audioBuffers = opts->audioBuffers;
367 }
368
369 threadContext->idleOptimization = opts->idleOptimization;
370}
371
372void GBAMapArgumentsToContext(const struct GBAArguments* args, struct GBAThread* threadContext) {
373 if (args->dirmode) {
374 threadContext->gameDir = VDirOpen(args->fname);
375 threadContext->stateDir = threadContext->gameDir;
376 } else {
377 GBAThreadLoadROM(threadContext, args->fname);
378 }
379 threadContext->fname = args->fname;
380 threadContext->patch = VFileOpen(args->patch, O_RDONLY);
381 threadContext->cheatsFile = VFileOpen(args->cheatsFile, O_RDONLY);
382 threadContext->movie = args->movie;
383}
384
385bool GBAThreadStart(struct GBAThread* threadContext) {
386 // TODO: error check
387 threadContext->activeKeys = 0;
388 threadContext->state = THREAD_INITIALIZED;
389 threadContext->sync.videoFrameOn = true;
390
391 threadContext->rewindBuffer = 0;
392 threadContext->rewindScreenBuffer = 0;
393 int newCapacity = threadContext->rewindBufferCapacity;
394 int newInterval = threadContext->rewindBufferInterval;
395 threadContext->rewindBufferCapacity = 0;
396 threadContext->rewindBufferInterval = 0;
397 GBARewindSettingsChanged(threadContext, newCapacity, newInterval);
398
399 if (!threadContext->fpsTarget) {
400 threadContext->fpsTarget = _defaultFPSTarget;
401 }
402
403 bool bootBios = threadContext->bootBios && threadContext->bios;
404
405 if (threadContext->rom && (!GBAIsROM(threadContext->rom) || bootBios)) {
406 threadContext->rom->close(threadContext->rom);
407 threadContext->rom = 0;
408 }
409
410 if (threadContext->gameDir) {
411 _loadGameDir(threadContext);
412 }
413
414 if (!threadContext->rom && !bootBios) {
415 threadContext->state = THREAD_SHUTDOWN;
416 return false;
417 }
418
419 threadContext->save = VDirOptionalOpenFile(threadContext->stateDir, threadContext->fname, "sram", ".sav", O_CREAT | O_RDWR);
420
421 if (!threadContext->patch) {
422 threadContext->patch = VDirOptionalOpenFile(threadContext->stateDir, threadContext->fname, "patch", ".ups", O_RDONLY);
423 }
424 if (!threadContext->patch) {
425 threadContext->patch = VDirOptionalOpenFile(threadContext->stateDir, threadContext->fname, "patch", ".ips", O_RDONLY);
426 }
427 if (!threadContext->patch) {
428 threadContext->patch = VDirOptionalOpenFile(threadContext->stateDir, threadContext->fname, "patch", ".bps", O_RDONLY);
429 }
430
431 MutexInit(&threadContext->stateMutex);
432 ConditionInit(&threadContext->stateCond);
433
434 MutexInit(&threadContext->sync.videoFrameMutex);
435 ConditionInit(&threadContext->sync.videoFrameAvailableCond);
436 ConditionInit(&threadContext->sync.videoFrameRequiredCond);
437 MutexInit(&threadContext->sync.audioBufferMutex);
438 ConditionInit(&threadContext->sync.audioRequiredCond);
439
440 threadContext->interruptDepth = 0;
441
442#ifdef USE_PTHREADS
443 sigset_t signals;
444 sigemptyset(&signals);
445 sigaddset(&signals, SIGINT);
446 sigaddset(&signals, SIGTRAP);
447 pthread_sigmask(SIG_BLOCK, &signals, 0);
448#endif
449
450 MutexLock(&threadContext->stateMutex);
451 ThreadCreate(&threadContext->thread, _GBAThreadRun, threadContext);
452 while (threadContext->state < THREAD_RUNNING) {
453 ConditionWait(&threadContext->stateCond, &threadContext->stateMutex);
454 }
455 MutexUnlock(&threadContext->stateMutex);
456
457 return true;
458}
459
460bool GBAThreadHasStarted(struct GBAThread* threadContext) {
461 bool hasStarted;
462 MutexLock(&threadContext->stateMutex);
463 hasStarted = threadContext->state > THREAD_INITIALIZED;
464 MutexUnlock(&threadContext->stateMutex);
465 return hasStarted;
466}
467
468bool GBAThreadHasExited(struct GBAThread* threadContext) {
469 bool hasExited;
470 MutexLock(&threadContext->stateMutex);
471 hasExited = threadContext->state > THREAD_EXITING;
472 MutexUnlock(&threadContext->stateMutex);
473 return hasExited;
474}
475
476bool GBAThreadHasCrashed(struct GBAThread* threadContext) {
477 bool hasExited;
478 MutexLock(&threadContext->stateMutex);
479 hasExited = threadContext->state == THREAD_CRASHED;
480 MutexUnlock(&threadContext->stateMutex);
481 return hasExited;
482}
483
484void GBAThreadEnd(struct GBAThread* threadContext) {
485 MutexLock(&threadContext->stateMutex);
486 _waitOnInterrupt(threadContext);
487 threadContext->state = THREAD_EXITING;
488 if (threadContext->gba) {
489 threadContext->gba->cpu->halted = false;
490 }
491 ConditionWake(&threadContext->stateCond);
492 MutexUnlock(&threadContext->stateMutex);
493 MutexLock(&threadContext->sync.audioBufferMutex);
494 threadContext->sync.audioWait = 0;
495 ConditionWake(&threadContext->sync.audioRequiredCond);
496 MutexUnlock(&threadContext->sync.audioBufferMutex);
497
498 MutexLock(&threadContext->sync.videoFrameMutex);
499 threadContext->sync.videoFrameWait = false;
500 threadContext->sync.videoFrameOn = false;
501 ConditionWake(&threadContext->sync.videoFrameRequiredCond);
502 ConditionWake(&threadContext->sync.videoFrameAvailableCond);
503 MutexUnlock(&threadContext->sync.videoFrameMutex);
504}
505
506void GBAThreadReset(struct GBAThread* threadContext) {
507 MutexLock(&threadContext->stateMutex);
508 _waitOnInterrupt(threadContext);
509 threadContext->state = THREAD_RESETING;
510 ConditionWake(&threadContext->stateCond);
511 MutexUnlock(&threadContext->stateMutex);
512}
513
514void GBAThreadJoin(struct GBAThread* threadContext) {
515 ThreadJoin(threadContext->thread);
516
517 MutexDeinit(&threadContext->stateMutex);
518 ConditionDeinit(&threadContext->stateCond);
519
520 MutexDeinit(&threadContext->sync.videoFrameMutex);
521 ConditionWake(&threadContext->sync.videoFrameAvailableCond);
522 ConditionDeinit(&threadContext->sync.videoFrameAvailableCond);
523 ConditionWake(&threadContext->sync.videoFrameRequiredCond);
524 ConditionDeinit(&threadContext->sync.videoFrameRequiredCond);
525
526 ConditionWake(&threadContext->sync.audioRequiredCond);
527 ConditionDeinit(&threadContext->sync.audioRequiredCond);
528 MutexDeinit(&threadContext->sync.audioBufferMutex);
529
530 int i;
531 for (i = 0; i < threadContext->rewindBufferCapacity; ++i) {
532 if (threadContext->rewindBuffer[i]) {
533 GBADeallocateState(threadContext->rewindBuffer[i]);
534 }
535 }
536 free(threadContext->rewindBuffer);
537 free(threadContext->rewindScreenBuffer);
538
539 if (threadContext->rom) {
540 threadContext->rom->close(threadContext->rom);
541 threadContext->rom = 0;
542 }
543
544 if (threadContext->save) {
545 threadContext->save->close(threadContext->save);
546 threadContext->save = 0;
547 }
548
549 if (threadContext->bios) {
550 threadContext->bios->close(threadContext->bios);
551 threadContext->bios = 0;
552 }
553
554 if (threadContext->patch) {
555 threadContext->patch->close(threadContext->patch);
556 threadContext->patch = 0;
557 }
558
559 if (threadContext->gameDir) {
560 if (threadContext->stateDir == threadContext->gameDir) {
561 threadContext->stateDir = 0;
562 }
563 threadContext->gameDir->close(threadContext->gameDir);
564 threadContext->gameDir = 0;
565 }
566
567 if (threadContext->stateDir) {
568 threadContext->stateDir->close(threadContext->stateDir);
569 threadContext->stateDir = 0;
570 }
571}
572
573bool GBAThreadIsActive(struct GBAThread* threadContext) {
574 return threadContext->state >= THREAD_RUNNING && threadContext->state < THREAD_EXITING;
575}
576
577void GBAThreadInterrupt(struct GBAThread* threadContext) {
578 MutexLock(&threadContext->stateMutex);
579 ++threadContext->interruptDepth;
580 if (threadContext->interruptDepth > 1 || !GBAThreadIsActive(threadContext)) {
581 MutexUnlock(&threadContext->stateMutex);
582 return;
583 }
584 threadContext->savedState = threadContext->state;
585 _waitOnInterrupt(threadContext);
586 threadContext->state = THREAD_INTERRUPTING;
587 threadContext->gba->cpu->nextEvent = 0;
588 ConditionWake(&threadContext->stateCond);
589 _waitUntilNotState(threadContext, THREAD_INTERRUPTING);
590 MutexUnlock(&threadContext->stateMutex);
591}
592
593void GBAThreadContinue(struct GBAThread* threadContext) {
594 MutexLock(&threadContext->stateMutex);
595 --threadContext->interruptDepth;
596 if (threadContext->interruptDepth < 1 && GBAThreadIsActive(threadContext)) {
597 threadContext->state = threadContext->savedState;
598 ConditionWake(&threadContext->stateCond);
599 }
600 MutexUnlock(&threadContext->stateMutex);
601}
602
603void GBARunOnThread(struct GBAThread* threadContext, void (*run)(struct GBAThread*)) {
604 MutexLock(&threadContext->stateMutex);
605 threadContext->run = run;
606 _waitOnInterrupt(threadContext);
607 threadContext->savedState = threadContext->state;
608 threadContext->state = THREAD_RUN_ON;
609 threadContext->gba->cpu->nextEvent = 0;
610 ConditionWake(&threadContext->stateCond);
611 _waitUntilNotState(threadContext, THREAD_RUN_ON);
612 MutexUnlock(&threadContext->stateMutex);
613}
614
615void GBAThreadPause(struct GBAThread* threadContext) {
616 bool frameOn = threadContext->sync.videoFrameOn;
617 MutexLock(&threadContext->stateMutex);
618 _waitOnInterrupt(threadContext);
619 if (threadContext->state == THREAD_RUNNING) {
620 _pauseThread(threadContext, false);
621 threadContext->frameWasOn = frameOn;
622 frameOn = false;
623 }
624 MutexUnlock(&threadContext->stateMutex);
625
626 GBASyncSetVideoSync(&threadContext->sync, frameOn);
627}
628
629void GBAThreadUnpause(struct GBAThread* threadContext) {
630 bool frameOn = threadContext->sync.videoFrameOn;
631 MutexLock(&threadContext->stateMutex);
632 _waitOnInterrupt(threadContext);
633 if (threadContext->state == THREAD_PAUSED || threadContext->state == THREAD_PAUSING) {
634 threadContext->state = THREAD_RUNNING;
635 ConditionWake(&threadContext->stateCond);
636 frameOn = threadContext->frameWasOn;
637 }
638 MutexUnlock(&threadContext->stateMutex);
639
640 GBASyncSetVideoSync(&threadContext->sync, frameOn);
641}
642
643bool GBAThreadIsPaused(struct GBAThread* threadContext) {
644 bool isPaused;
645 MutexLock(&threadContext->stateMutex);
646 _waitOnInterrupt(threadContext);
647 isPaused = threadContext->state == THREAD_PAUSED;
648 MutexUnlock(&threadContext->stateMutex);
649 return isPaused;
650}
651
652void GBAThreadTogglePause(struct GBAThread* threadContext) {
653 bool frameOn = threadContext->sync.videoFrameOn;
654 MutexLock(&threadContext->stateMutex);
655 _waitOnInterrupt(threadContext);
656 if (threadContext->state == THREAD_PAUSED || threadContext->state == THREAD_PAUSING) {
657 threadContext->state = THREAD_RUNNING;
658 ConditionWake(&threadContext->stateCond);
659 frameOn = threadContext->frameWasOn;
660 } else if (threadContext->state == THREAD_RUNNING) {
661 _pauseThread(threadContext, false);
662 threadContext->frameWasOn = frameOn;
663 frameOn = false;
664 }
665 MutexUnlock(&threadContext->stateMutex);
666
667 GBASyncSetVideoSync(&threadContext->sync, frameOn);
668}
669
670void GBAThreadPauseFromThread(struct GBAThread* threadContext) {
671 bool frameOn = true;
672 MutexLock(&threadContext->stateMutex);
673 _waitOnInterrupt(threadContext);
674 if (threadContext->state == THREAD_RUNNING) {
675 _pauseThread(threadContext, true);
676 frameOn = false;
677 }
678 MutexUnlock(&threadContext->stateMutex);
679
680 GBASyncSetVideoSync(&threadContext->sync, frameOn);
681}
682
683void GBAThreadLoadROM(struct GBAThread* threadContext, const char* fname) {
684 threadContext->rom = VFileOpen(fname, O_RDONLY);
685 threadContext->gameDir = 0;
686 if (!threadContext->gameDir) {
687 threadContext->gameDir = VDirOpenArchive(fname);
688 }
689}
690
691static void _loadGameDir(struct GBAThread* threadContext) {
692 threadContext->gameDir->rewind(threadContext->gameDir);
693 struct VDirEntry* dirent = threadContext->gameDir->listNext(threadContext->gameDir);
694 while (dirent) {
695 struct Patch patchTemp;
696 struct VFile* vf = threadContext->gameDir->openFile(threadContext->gameDir, dirent->name(dirent), O_RDONLY);
697 if (!vf) {
698 dirent = threadContext->gameDir->listNext(threadContext->gameDir);
699 continue;
700 }
701 if (!threadContext->rom && GBAIsROM(vf)) {
702 threadContext->rom = vf;
703 } else if (!threadContext->patch && loadPatch(vf, &patchTemp)) {
704 threadContext->patch = vf;
705 } else {
706 vf->close(vf);
707 }
708 dirent = threadContext->gameDir->listNext(threadContext->gameDir);
709 }
710}
711
712void GBAThreadReplaceROM(struct GBAThread* threadContext, const char* fname) {
713 GBAUnloadROM(threadContext->gba);
714
715 if (threadContext->rom) {
716 threadContext->rom->close(threadContext->rom);
717 threadContext->rom = 0;
718 }
719
720 if (threadContext->save) {
721 threadContext->save->close(threadContext->save);
722 threadContext->save = 0;
723 }
724
725 GBAThreadLoadROM(threadContext, fname);
726 if (threadContext->gameDir) {
727 _loadGameDir(threadContext);
728 }
729
730 threadContext->fname = fname;
731 threadContext->save = VDirOptionalOpenFile(threadContext->stateDir, threadContext->fname, "sram", ".sav", O_CREAT | O_RDWR);
732
733 GBARaiseIRQ(threadContext->gba, IRQ_GAMEPAK);
734 GBALoadROM(threadContext->gba, threadContext->rom, threadContext->save, threadContext->fname);
735}
736
737#ifdef USE_PTHREADS
738struct GBAThread* GBAThreadGetContext(void) {
739 pthread_once(&_contextOnce, _createTLS);
740 return pthread_getspecific(_contextKey);
741}
742#elif _WIN32
743struct GBAThread* GBAThreadGetContext(void) {
744 InitOnceExecuteOnce(&_contextOnce, _createTLS, NULL, 0);
745 return TlsGetValue(_contextKey);
746}
747#endif
748
749void GBAThreadTakeScreenshot(struct GBAThread* threadContext) {
750 GBATakeScreenshot(threadContext->gba, threadContext->stateDir);
751}
752
753#else
754struct GBAThread* GBAThreadGetContext(void) {
755 return 0;
756}
757#endif