| 1 | // |
| 2 | // EmuThread.m |
| 3 | // Pcsx |
| 4 | // |
| 5 | // Created by Gil Pedersen on Sun Sep 21 2003. |
| 6 | // Copyright (c) 2003 __MyCompanyName__. All rights reserved. |
| 7 | // |
| 8 | |
| 9 | #import <ExceptionHandling/NSExceptionHandler.h> |
| 10 | #import <AppKit/NSApplication.h> |
| 11 | #include <pthread.h> |
| 12 | #include <setjmp.h> |
| 13 | #import "EmuThread.h" |
| 14 | #include "psxcommon.h" |
| 15 | #include "plugins.h" |
| 16 | #include "misc.h" |
| 17 | |
| 18 | EmuThread *emuThread; |
| 19 | NSString *defrostPath = nil; |
| 20 | static int safeEvent; |
| 21 | static int paused; |
| 22 | static int runbios; |
| 23 | |
| 24 | static pthread_cond_t eventCond; |
| 25 | static pthread_mutex_t eventMutex; |
| 26 | |
| 27 | #define EMUEVENT_NONE 0 |
| 28 | #define EMUEVENT_PAUSE (1<<0) |
| 29 | #define EMUEVENT_RESET (1<<1) |
| 30 | #define EMUEVENT_STOP (1<<2) |
| 31 | |
| 32 | @implementation EmuThread |
| 33 | |
| 34 | - (void)EmuThreadRun:(id)anObject |
| 35 | { |
| 36 | pool = [[NSAutoreleasePool alloc] init]; |
| 37 | |
| 38 | [[NSNotificationCenter defaultCenter] addObserver:self |
| 39 | selector:@selector(emuWindowDidClose:) |
| 40 | name:@"emuWindowDidClose" object:nil]; |
| 41 | |
| 42 | [[NSNotificationCenter defaultCenter] addObserver:self |
| 43 | selector:@selector(emuWindowWantPause:) |
| 44 | name:@"emuWindowWantPause" object:nil]; |
| 45 | |
| 46 | [[NSNotificationCenter defaultCenter] addObserver:self |
| 47 | selector:@selector(emuWindowWantResume:) |
| 48 | name:@"emuWindowWantResume" object:nil]; |
| 49 | |
| 50 | // we shouldn't change the priority, since we might depend on subthreads |
| 51 | //[NSThread setThreadPriority:1.0-((1.0-[NSThread threadPriority])/4.0)]; |
| 52 | |
| 53 | // Do processing here |
| 54 | if (OpenPlugins() == -1) |
| 55 | goto done; |
| 56 | |
| 57 | setjmp(restartJmp); |
| 58 | |
| 59 | EmuReset(); |
| 60 | |
| 61 | int res = CheckCdrom(); |
| 62 | if (res == -1) { |
| 63 | ClosePlugins(); |
| 64 | SysMessage(_("Could not check CD-ROM!\n")); |
| 65 | goto done; |
| 66 | } |
| 67 | |
| 68 | LoadCdrom(); |
| 69 | |
| 70 | if (defrostPath) { |
| 71 | LoadState([defrostPath fileSystemRepresentation]); |
| 72 | [defrostPath release]; defrostPath = nil; |
| 73 | } |
| 74 | |
| 75 | psxCpu->Execute(); |
| 76 | |
| 77 | done: |
| 78 | [pool release]; pool = nil; |
| 79 | emuThread = nil; |
| 80 | |
| 81 | return; |
| 82 | } |
| 83 | |
| 84 | - (void)EmuThreadRunBios:(id)anObject |
| 85 | { |
| 86 | pool = [[NSAutoreleasePool alloc] init]; |
| 87 | |
| 88 | [[NSNotificationCenter defaultCenter] addObserver:self |
| 89 | selector:@selector(emuWindowDidClose:) |
| 90 | name:@"emuWindowDidClose" object:nil]; |
| 91 | |
| 92 | [[NSNotificationCenter defaultCenter] addObserver:self |
| 93 | selector:@selector(emuWindowWantPause:) |
| 94 | name:@"emuWindowWantPause" object:nil]; |
| 95 | |
| 96 | [[NSNotificationCenter defaultCenter] addObserver:self |
| 97 | selector:@selector(emuWindowWantResume:) |
| 98 | name:@"emuWindowWantResume" object:nil]; |
| 99 | |
| 100 | // we shouldn't change the priority, since we might depend on subthreads |
| 101 | //[NSThread setThreadPriority:1.0-((1.0-[NSThread threadPriority])/4.0)]; |
| 102 | |
| 103 | // Do processing here |
| 104 | if (OpenPlugins() == -1) |
| 105 | goto done; |
| 106 | |
| 107 | EmuReset(); |
| 108 | |
| 109 | psxCpu->Execute(); |
| 110 | |
| 111 | done: |
| 112 | [pool release]; pool = nil; |
| 113 | emuThread = nil; |
| 114 | |
| 115 | return; |
| 116 | } |
| 117 | |
| 118 | - (void)dealloc |
| 119 | { |
| 120 | // remove all registered observers |
| 121 | [[NSNotificationCenter defaultCenter] removeObserver:self name:nil object:nil]; |
| 122 | |
| 123 | if (pool) |
| 124 | [pool release]; |
| 125 | |
| 126 | [super dealloc]; |
| 127 | } |
| 128 | |
| 129 | - (void)emuWindowDidClose:(NSNotification *)aNotification |
| 130 | { |
| 131 | [EmuThread stop]; |
| 132 | } |
| 133 | |
| 134 | - (void)emuWindowWantPause:(NSNotification *)aNotification |
| 135 | { |
| 136 | wasPaused = [EmuThread pause]; |
| 137 | } |
| 138 | |
| 139 | - (void)emuWindowWantResume:(NSNotification *)aNotification |
| 140 | { |
| 141 | if (!wasPaused) { |
| 142 | [EmuThread resume]; |
| 143 | } |
| 144 | wasPaused = NO; |
| 145 | } |
| 146 | |
| 147 | /* called periodically from the emulation thread */ |
| 148 | - (void)handleEvents |
| 149 | { |
| 150 | /* only do a trylock here, since we're not interested in blocking, |
| 151 | and we can just handle events next time round */ |
| 152 | if (pthread_mutex_trylock(&eventMutex) == 0) { |
| 153 | while (safeEvent) { |
| 154 | if (safeEvent & EMUEVENT_STOP) { |
| 155 | /* signify that the emulation has stopped */ |
| 156 | [emuThread autorelease]; |
| 157 | emuThread = nil; |
| 158 | paused = NO; |
| 159 | |
| 160 | /* better unlock the mutex before killing ourself */ |
| 161 | pthread_mutex_unlock(&eventMutex); |
| 162 | |
| 163 | ClosePlugins(); |
| 164 | SysClose(); |
| 165 | |
| 166 | //[[NSThread currentThread] autorelease]; |
| 167 | [NSThread exit]; |
| 168 | return; |
| 169 | } |
| 170 | |
| 171 | if (safeEvent & EMUEVENT_RESET) { |
| 172 | #if 0 |
| 173 | /* signify that the emulation has stopped */ |
| 174 | [emuThread autorelease]; |
| 175 | emuThread = nil; |
| 176 | |
| 177 | /* better unlock the mutex before killing ourself */ |
| 178 | pthread_mutex_unlock(&eventMutex); |
| 179 | |
| 180 | ClosePlugins(); |
| 181 | |
| 182 | // start a new emulation thread |
| 183 | [EmuThread run]; |
| 184 | |
| 185 | //[[NSThread currentThread] autorelease]; |
| 186 | [NSThread exit]; |
| 187 | return; |
| 188 | #else |
| 189 | safeEvent &= ~EMUEVENT_RESET; |
| 190 | pthread_mutex_unlock(&eventMutex); |
| 191 | |
| 192 | longjmp(restartJmp, 0); |
| 193 | #endif |
| 194 | } |
| 195 | |
| 196 | if (safeEvent & EMUEVENT_PAUSE) { |
| 197 | paused = 2; |
| 198 | /* wait until we're signalled */ |
| 199 | pthread_cond_wait(&eventCond, &eventMutex); |
| 200 | } |
| 201 | } |
| 202 | pthread_mutex_unlock(&eventMutex); |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | + (void)run |
| 207 | { |
| 208 | int err; |
| 209 | |
| 210 | if (emuThread) { |
| 211 | [EmuThread resume]; |
| 212 | return; |
| 213 | } |
| 214 | |
| 215 | if (pthread_mutex_lock(&eventMutex) != 0) { |
| 216 | err = pthread_cond_init(&eventCond, NULL); |
| 217 | if (err) return; |
| 218 | |
| 219 | err = pthread_mutex_init(&eventMutex, NULL); |
| 220 | if (err) return; |
| 221 | |
| 222 | pthread_mutex_lock(&eventMutex); |
| 223 | } |
| 224 | |
| 225 | safeEvent = EMUEVENT_NONE; |
| 226 | paused = NO; |
| 227 | runbios = NO; |
| 228 | |
| 229 | if (SysInit() != 0) { |
| 230 | pthread_mutex_unlock(&eventMutex); |
| 231 | return; |
| 232 | } |
| 233 | |
| 234 | emuThread = [[EmuThread alloc] init]; |
| 235 | |
| 236 | [NSThread detachNewThreadSelector:@selector(EmuThreadRun:) |
| 237 | toTarget:emuThread withObject:nil]; |
| 238 | |
| 239 | pthread_mutex_unlock(&eventMutex); |
| 240 | } |
| 241 | |
| 242 | + (void)runBios |
| 243 | { |
| 244 | int err; |
| 245 | |
| 246 | if (emuThread) { |
| 247 | [EmuThread resume]; |
| 248 | return; |
| 249 | } |
| 250 | |
| 251 | if (pthread_mutex_lock(&eventMutex) != 0) { |
| 252 | err = pthread_cond_init(&eventCond, NULL); |
| 253 | if (err) return; |
| 254 | |
| 255 | err = pthread_mutex_init(&eventMutex, NULL); |
| 256 | if (err) return; |
| 257 | |
| 258 | pthread_mutex_lock(&eventMutex); |
| 259 | } |
| 260 | |
| 261 | safeEvent = EMUEVENT_NONE; |
| 262 | paused = NO; |
| 263 | runbios = YES; |
| 264 | |
| 265 | if (SysInit() != 0) { |
| 266 | pthread_mutex_unlock(&eventMutex); |
| 267 | return; |
| 268 | } |
| 269 | |
| 270 | emuThread = [[EmuThread alloc] init]; |
| 271 | |
| 272 | [NSThread detachNewThreadSelector:@selector(EmuThreadRunBios:) |
| 273 | toTarget:emuThread withObject:nil]; |
| 274 | |
| 275 | pthread_mutex_unlock(&eventMutex); |
| 276 | } |
| 277 | |
| 278 | + (void)stop |
| 279 | { |
| 280 | pthread_mutex_lock(&eventMutex); |
| 281 | safeEvent = EMUEVENT_STOP; |
| 282 | pthread_mutex_unlock(&eventMutex); |
| 283 | |
| 284 | // wake it if it's sleeping |
| 285 | pthread_cond_broadcast(&eventCond); |
| 286 | } |
| 287 | |
| 288 | + (BOOL)pause |
| 289 | { |
| 290 | if (paused || ![EmuThread active]) |
| 291 | return YES; |
| 292 | |
| 293 | pthread_mutex_lock(&eventMutex); |
| 294 | safeEvent |= EMUEVENT_PAUSE; |
| 295 | paused = 1; |
| 296 | pthread_mutex_unlock(&eventMutex); |
| 297 | |
| 298 | pthread_cond_broadcast(&eventCond); |
| 299 | |
| 300 | return NO; |
| 301 | } |
| 302 | |
| 303 | + (BOOL)pauseSafe |
| 304 | { |
| 305 | if ((paused == 2) || ![EmuThread active]) |
| 306 | return YES; |
| 307 | |
| 308 | [EmuThread pause]; |
| 309 | while ([EmuThread isPaused] != 2) [NSThread sleepUntilDate:[[NSDate date] addTimeInterval:0.05]]; |
| 310 | |
| 311 | return NO; |
| 312 | } |
| 313 | |
| 314 | + (void)resume |
| 315 | { |
| 316 | if (!paused || ![EmuThread active]) |
| 317 | return; |
| 318 | |
| 319 | pthread_mutex_lock(&eventMutex); |
| 320 | |
| 321 | safeEvent &= ~EMUEVENT_PAUSE; |
| 322 | paused = NO; |
| 323 | pthread_mutex_unlock(&eventMutex); |
| 324 | |
| 325 | pthread_cond_broadcast(&eventCond); |
| 326 | } |
| 327 | |
| 328 | + (void)reset |
| 329 | { |
| 330 | pthread_mutex_lock(&eventMutex); |
| 331 | safeEvent = EMUEVENT_RESET; |
| 332 | pthread_mutex_unlock(&eventMutex); |
| 333 | |
| 334 | pthread_cond_broadcast(&eventCond); |
| 335 | } |
| 336 | |
| 337 | // must only be called from within the emulation thread!!! |
| 338 | + (void)resetNow |
| 339 | { |
| 340 | /* signify that the emulation has stopped */ |
| 341 | [emuThread autorelease]; |
| 342 | emuThread = nil; |
| 343 | |
| 344 | ClosePlugins(); |
| 345 | |
| 346 | // start a new emulation thread |
| 347 | [EmuThread run]; |
| 348 | |
| 349 | //[[NSThread currentThread] autorelease]; |
| 350 | [NSThread exit]; |
| 351 | return; |
| 352 | } |
| 353 | |
| 354 | + (BOOL)isPaused |
| 355 | { |
| 356 | return paused; |
| 357 | } |
| 358 | |
| 359 | + (BOOL)isRunBios |
| 360 | { |
| 361 | return runbios; |
| 362 | } |
| 363 | |
| 364 | + (BOOL)active |
| 365 | { |
| 366 | return emuThread ? YES : NO; |
| 367 | } |
| 368 | |
| 369 | + (void)freezeAt:(NSString *)path which:(int)num |
| 370 | { |
| 371 | BOOL emuWasPaused = [EmuThread pauseSafe]; |
| 372 | char Text[256]; |
| 373 | |
| 374 | GPU_freeze(2, (GPUFreeze_t *)&num); |
| 375 | int ret = SaveState([path fileSystemRepresentation]); |
| 376 | if (ret == 0) sprintf (Text, _("*PCSX*: Saved State %d"), num+1); |
| 377 | else sprintf (Text, _("*PCSX*: Error Saving State %d"), num+1); |
| 378 | GPU_displayText(Text); |
| 379 | |
| 380 | if (!emuWasPaused) { |
| 381 | [EmuThread resume]; |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | + (BOOL)defrostAt:(NSString *)path |
| 386 | { |
| 387 | const char *cPath = [path fileSystemRepresentation]; |
| 388 | if (CheckState(cPath) != 0) |
| 389 | return NO; |
| 390 | |
| 391 | defrostPath = [path retain]; |
| 392 | [EmuThread reset]; |
| 393 | |
| 394 | GPU_displayText(_("*PCSX*: Loaded State")); |
| 395 | return YES; |
| 396 | } |
| 397 | |
| 398 | @end |