| OLD | NEW |
|---|
| (Empty) |
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 /* | |
| 6 * nssilock.c - NSS lock instrumentation wrapper functions | |
| 7 * | |
| 8 * NOTE - These are not public interfaces | |
| 9 * | |
| 10 * Implementation Notes: | |
| 11 * I've tried to make the instrumentation relatively non-intrusive. | |
| 12 * To do this, I have used a single PR_LOG() call in each | |
| 13 * instrumented function. There's room for improvement. | |
| 14 * | |
| 15 * | |
| 16 */ | |
| 17 | |
| 18 #include "prinit.h" | |
| 19 #include "prerror.h" | |
| 20 #include "prlock.h" | |
| 21 #include "prmem.h" | |
| 22 #include "prenv.h" | |
| 23 #include "prcvar.h" | |
| 24 #include "prio.h" | |
| 25 | |
| 26 #if defined(NEED_NSS_ILOCK) | |
| 27 #include "prlog.h" | |
| 28 #include "nssilock.h" | |
| 29 | |
| 30 /* | |
| 31 ** Declare the instrumented PZLock | |
| 32 */ | |
| 33 struct pzlock_s { | |
| 34 PRLock *lock; /* the PZLock to be instrumented */ | |
| 35 PRIntervalTime time; /* timestamp when the lock was aquired */ | |
| 36 nssILockType ltype; | |
| 37 }; | |
| 38 | |
| 39 /* | |
| 40 ** Declare the instrumented PZMonitor | |
| 41 */ | |
| 42 struct pzmonitor_s { | |
| 43 PRMonitor *mon; /* the PZMonitor to be instrumented */ | |
| 44 PRIntervalTime time; /* timestamp when the monitor was aquired */ | |
| 45 nssILockType ltype; | |
| 46 }; | |
| 47 | |
| 48 /* | |
| 49 ** Declare the instrumented PZCondVar | |
| 50 */ | |
| 51 struct pzcondvar_s { | |
| 52 PRCondVar *cvar; /* the PZCondVar to be instrumented */ | |
| 53 nssILockType ltype; | |
| 54 }; | |
| 55 | |
| 56 | |
| 57 /* | |
| 58 ** Define a CallOnce type to ensure serialized self-initialization | |
| 59 */ | |
| 60 static PRCallOnceType coNssILock; /* CallOnce type */ | |
| 61 static PRIntn nssILockInitialized; /* initialization done when 1 */ | |
| 62 static PRLogModuleInfo *nssILog; /* Log instrumentation to this handle */ | |
| 63 | |
| 64 | |
| 65 #define NUM_TT_ENTRIES 6000000 | |
| 66 static PRInt32 traceIndex = -1; /* index into trace table */ | |
| 67 static struct pzTrace_s *tt; /* pointer to trace table */ | |
| 68 static PRInt32 ttBufSize = (NUM_TT_ENTRIES * sizeof(struct pzTrace_s )); | |
| 69 static PRCondVar *ttCVar; | |
| 70 static PRLock *ttLock; | |
| 71 static PRFileDesc *ttfd; /* trace table file */ | |
| 72 | |
| 73 /* | |
| 74 ** Vtrace() -- Trace events, write events to external media | |
| 75 ** | |
| 76 ** Vtrace() records traced events in an in-memory trace table | |
| 77 ** when the trace table fills, Vtrace writes the entire table | |
| 78 ** to a file. | |
| 79 ** | |
| 80 ** data can be lost! | |
| 81 ** | |
| 82 */ | |
| 83 static void Vtrace( | |
| 84 nssILockOp op, | |
| 85 nssILockType ltype, | |
| 86 PRIntervalTime callTime, | |
| 87 PRIntervalTime heldTime, | |
| 88 void *lock, | |
| 89 PRIntn line, | |
| 90 char *file | |
| 91 ) { | |
| 92 PRInt32 idx; | |
| 93 struct pzTrace_s *tp; | |
| 94 | |
| 95 RetryTrace: | |
| 96 idx = PR_ATOMIC_INCREMENT( &traceIndex ); | |
| 97 while( NUM_TT_ENTRIES <= idx || op == FlushTT ) { | |
| 98 if( NUM_TT_ENTRIES == idx || op == FlushTT ) { | |
| 99 int writeSize = idx * sizeof(struct pzTrace_s); | |
| 100 PR_Lock(ttLock); | |
| 101 PR_Write( ttfd, tt, writeSize ); | |
| 102 traceIndex = -1; | |
| 103 PR_NotifyAllCondVar( ttCVar ); | |
| 104 PR_Unlock(ttLock); | |
| 105 goto RetryTrace; | |
| 106 } else { | |
| 107 PR_Lock(ttLock); | |
| 108 while( NUM_TT_ENTRIES < idx ) | |
| 109 PR_WaitCondVar(ttCVar, PR_INTERVAL_NO_WAIT); | |
| 110 PR_Unlock(ttLock); | |
| 111 goto RetryTrace; | |
| 112 } | |
| 113 } /* end while() */ | |
| 114 | |
| 115 /* create the trace entry */ | |
| 116 tp = tt + idx; | |
| 117 tp->threadID = PR_GetThreadID(PR_GetCurrentThread()); | |
| 118 tp->op = op; | |
| 119 tp->ltype = ltype; | |
| 120 tp->callTime = callTime; | |
| 121 tp->heldTime = heldTime; | |
| 122 tp->lock = lock; | |
| 123 tp ->line = line; | |
| 124 strcpy(tp->file, file ); | |
| 125 return; | |
| 126 } /* --- end Vtrace() --- */ | |
| 127 | |
| 128 /* | |
| 129 ** pz_TraceFlush() -- Force trace table write to file | |
| 130 ** | |
| 131 */ | |
| 132 extern void pz_TraceFlush( void ) | |
| 133 { | |
| 134 Vtrace( FlushTT, nssILockSelfServ, 0, 0, NULL, 0, "" ); | |
| 135 return; | |
| 136 } /* --- end pz_TraceFlush() --- */ | |
| 137 | |
| 138 /* | |
| 139 ** nssILockInit() -- Initialization for nssilock | |
| 140 ** | |
| 141 ** This function is called from the CallOnce mechanism. | |
| 142 */ | |
| 143 static PRStatus | |
| 144 nssILockInit( void ) | |
| 145 { | |
| 146 int i; | |
| 147 nssILockInitialized = 1; | |
| 148 | |
| 149 /* new log module */ | |
| 150 nssILog = PR_NewLogModule("nssilock"); | |
| 151 if ( NULL == nssILog ) { | |
| 152 return(PR_FAILURE); | |
| 153 } | |
| 154 | |
| 155 tt = PR_Calloc( NUM_TT_ENTRIES, sizeof(struct pzTrace_s)); | |
| 156 if (NULL == tt ) { | |
| 157 fprintf(stderr, "nssilock: can't allocate trace table\n"); | |
| 158 exit(1); | |
| 159 } | |
| 160 | |
| 161 ttfd = PR_Open( "xxxTTLog", PR_CREATE_FILE | PR_WRONLY, 0666 ); | |
| 162 if ( NULL == ttfd ) { | |
| 163 fprintf( stderr, "Oh Drat! Can't open 'xxxTTLog'\n"); | |
| 164 exit(1); | |
| 165 } | |
| 166 | |
| 167 ttLock = PR_NewLock(); | |
| 168 ttCVar = PR_NewCondVar(ttLock); | |
| 169 | |
| 170 return(PR_SUCCESS); | |
| 171 } /* --- end nssILockInit() --- */ | |
| 172 | |
| 173 extern PZLock * pz_NewLock( | |
| 174 nssILockType ltype, | |
| 175 char *file, | |
| 176 PRIntn line ) | |
| 177 { | |
| 178 PRStatus rc; | |
| 179 PZLock *lock; | |
| 180 | |
| 181 /* Self Initialize the nssILock feature */ | |
| 182 if (!nssILockInitialized) { | |
| 183 rc = PR_CallOnce( &coNssILock, nssILockInit ); | |
| 184 if ( PR_FAILURE == rc ) { | |
| 185 PR_SetError( PR_UNKNOWN_ERROR, 0 ); | |
| 186 return( NULL ); | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 lock = PR_NEWZAP( PZLock ); | |
| 191 if ( NULL != lock ) { | |
| 192 lock->ltype = ltype; | |
| 193 lock->lock = PR_NewLock(); | |
| 194 if ( NULL == lock->lock ) { | |
| 195 PR_DELETE( lock ); | |
| 196 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 197 } | |
| 198 } else { | |
| 199 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 200 } | |
| 201 | |
| 202 Vtrace( NewLock, ltype, 0, 0, lock, line, file ); | |
| 203 return(lock); | |
| 204 } /* --- end pz_NewLock() --- */ | |
| 205 | |
| 206 extern void | |
| 207 pz_Lock( | |
| 208 PZLock *lock, | |
| 209 char *file, | |
| 210 PRIntn line | |
| 211 ) | |
| 212 { | |
| 213 PRIntervalTime callTime; | |
| 214 | |
| 215 callTime = PR_IntervalNow(); | |
| 216 PR_Lock( lock->lock ); | |
| 217 lock->time = PR_IntervalNow(); | |
| 218 callTime = lock->time - callTime; | |
| 219 | |
| 220 Vtrace( Lock, lock->ltype, callTime, 0, lock, line, file ); | |
| 221 return; | |
| 222 } /* --- end pz_Lock() --- */ | |
| 223 | |
| 224 extern PRStatus | |
| 225 pz_Unlock( | |
| 226 PZLock *lock, | |
| 227 char *file, | |
| 228 PRIntn line | |
| 229 ) | |
| 230 { | |
| 231 PRStatus rc; | |
| 232 PRIntervalTime callTime, now, heldTime; | |
| 233 | |
| 234 callTime = PR_IntervalNow(); | |
| 235 rc = PR_Unlock( lock->lock ); | |
| 236 now = PR_IntervalNow(); | |
| 237 callTime = now - callTime; | |
| 238 heldTime = now - lock->time; | |
| 239 Vtrace( Unlock, lock->ltype, callTime, heldTime, lock, line, file ); | |
| 240 return( rc ); | |
| 241 } /* --- end pz_Unlock() --- */ | |
| 242 | |
| 243 extern void | |
| 244 pz_DestroyLock( | |
| 245 PZLock *lock, | |
| 246 char *file, | |
| 247 PRIntn line | |
| 248 ) | |
| 249 { | |
| 250 Vtrace( DestroyLock, lock->ltype, 0, 0, lock, line, file ); | |
| 251 PR_DestroyLock( lock->lock ); | |
| 252 PR_DELETE( lock ); | |
| 253 return; | |
| 254 } /* --- end pz_DestroyLock() --- */ | |
| 255 | |
| 256 | |
| 257 | |
| 258 extern PZCondVar * | |
| 259 pz_NewCondVar( | |
| 260 PZLock *lock, | |
| 261 char *file, | |
| 262 PRIntn line | |
| 263 ) | |
| 264 { | |
| 265 PZCondVar *cvar; | |
| 266 | |
| 267 cvar = PR_NEWZAP( PZCondVar ); | |
| 268 if ( NULL == cvar ) { | |
| 269 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 270 } else { | |
| 271 cvar->ltype = lock->ltype; | |
| 272 cvar->cvar = PR_NewCondVar( lock->lock ); | |
| 273 if ( NULL == cvar->cvar ) { | |
| 274 PR_DELETE( cvar ); | |
| 275 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 276 } | |
| 277 | |
| 278 } | |
| 279 Vtrace( NewCondVar, lock->ltype, 0, 0, cvar, line, file ); | |
| 280 return( cvar ); | |
| 281 } /* --- end pz_NewCondVar() --- */ | |
| 282 | |
| 283 extern void | |
| 284 pz_DestroyCondVar( | |
| 285 PZCondVar *cvar, | |
| 286 char *file, | |
| 287 PRIntn line | |
| 288 ) | |
| 289 { | |
| 290 Vtrace( DestroyCondVar, cvar->ltype, 0, 0, cvar, line, file ); | |
| 291 PR_DestroyCondVar( cvar->cvar ); | |
| 292 PR_DELETE( cvar ); | |
| 293 } /* --- end pz_DestroyCondVar() --- */ | |
| 294 | |
| 295 extern PRStatus | |
| 296 pz_WaitCondVar( | |
| 297 PZCondVar *cvar, | |
| 298 PRIntervalTime timeout, | |
| 299 char *file, | |
| 300 PRIntn line | |
| 301 ) | |
| 302 { | |
| 303 PRStatus rc; | |
| 304 PRIntervalTime callTime; | |
| 305 | |
| 306 callTime = PR_IntervalNow(); | |
| 307 rc = PR_WaitCondVar( cvar->cvar, timeout ); | |
| 308 callTime = PR_IntervalNow() - callTime; | |
| 309 | |
| 310 Vtrace( WaitCondVar, cvar->ltype, callTime, 0, cvar, line, file ); | |
| 311 return(rc); | |
| 312 } /* --- end pz_WaitCondVar() --- */ | |
| 313 | |
| 314 extern PRStatus | |
| 315 pz_NotifyCondVar( | |
| 316 PZCondVar *cvar, | |
| 317 char *file, | |
| 318 PRIntn line | |
| 319 ) | |
| 320 { | |
| 321 PRStatus rc; | |
| 322 | |
| 323 rc = PR_NotifyCondVar( cvar->cvar ); | |
| 324 | |
| 325 Vtrace( NotifyCondVar, cvar->ltype, 0, 0, cvar, line, file ); | |
| 326 return(rc); | |
| 327 } /* --- end pz_NotifyCondVar() --- */ | |
| 328 | |
| 329 extern PRStatus | |
| 330 pz_NotifyAllCondVar( | |
| 331 PZCondVar *cvar, | |
| 332 char *file, | |
| 333 PRIntn line | |
| 334 ) | |
| 335 { | |
| 336 PRStatus rc; | |
| 337 | |
| 338 rc = PR_NotifyAllCondVar( cvar->cvar ); | |
| 339 | |
| 340 Vtrace( NotifyAllCondVar, cvar->ltype, 0, 0, cvar, line, file ); | |
| 341 return(rc); | |
| 342 } /* --- end pz_NotifyAllCondVar() --- */ | |
| 343 | |
| 344 extern PZMonitor * | |
| 345 pz_NewMonitor( | |
| 346 nssILockType ltype, | |
| 347 char *file, | |
| 348 PRIntn line | |
| 349 ) | |
| 350 { | |
| 351 PRStatus rc; | |
| 352 PZMonitor *mon; | |
| 353 | |
| 354 /* Self Initialize the nssILock feature */ | |
| 355 if (!nssILockInitialized) { | |
| 356 rc = PR_CallOnce( &coNssILock, nssILockInit ); | |
| 357 if ( PR_FAILURE == rc ) { | |
| 358 PR_SetError( PR_UNKNOWN_ERROR, 0 ); | |
| 359 return( NULL ); | |
| 360 } | |
| 361 } | |
| 362 | |
| 363 mon = PR_NEWZAP( PZMonitor ); | |
| 364 if ( NULL != mon ) { | |
| 365 mon->ltype = ltype; | |
| 366 mon->mon = PR_NewMonitor(); | |
| 367 if ( NULL == mon->mon ) { | |
| 368 PR_DELETE( mon ); | |
| 369 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 370 } | |
| 371 } else { | |
| 372 PORT_SetError(SEC_ERROR_NO_MEMORY); | |
| 373 } | |
| 374 | |
| 375 Vtrace( NewMonitor, ltype, 0, 0, mon, line, file ); | |
| 376 return(mon); | |
| 377 } /* --- end pz_NewMonitor() --- */ | |
| 378 | |
| 379 extern void | |
| 380 pz_DestroyMonitor( | |
| 381 PZMonitor *mon, | |
| 382 char *file, | |
| 383 PRIntn line | |
| 384 ) | |
| 385 { | |
| 386 Vtrace( DestroyMonitor, mon->ltype, 0, 0, mon, line, file ); | |
| 387 PR_DestroyMonitor( mon->mon ); | |
| 388 PR_DELETE( mon ); | |
| 389 return; | |
| 390 } /* --- end pz_DestroyMonitor() --- */ | |
| 391 | |
| 392 extern void | |
| 393 pz_EnterMonitor( | |
| 394 PZMonitor *mon, | |
| 395 char *file, | |
| 396 PRIntn line | |
| 397 ) | |
| 398 { | |
| 399 PRIntervalTime callTime, now; | |
| 400 | |
| 401 callTime = PR_IntervalNow(); | |
| 402 PR_EnterMonitor( mon->mon ); | |
| 403 now = PR_IntervalNow(); | |
| 404 callTime = now - callTime; | |
| 405 if ( PR_GetMonitorEntryCount(mon->mon) == 1 ) { | |
| 406 mon->time = now; | |
| 407 } | |
| 408 Vtrace( EnterMonitor, mon->ltype, callTime, 0, mon, line, file ); | |
| 409 return; | |
| 410 } /* --- end pz_EnterMonitor() --- */ | |
| 411 | |
| 412 extern PRStatus | |
| 413 pz_ExitMonitor( | |
| 414 PZMonitor *mon, | |
| 415 char *file, | |
| 416 PRIntn line | |
| 417 ) | |
| 418 { | |
| 419 PRStatus rc; | |
| 420 PRIntervalTime callTime, now, heldTime; | |
| 421 PRIntn mec = PR_GetMonitorEntryCount( mon->mon ); | |
| 422 | |
| 423 heldTime = (PRIntervalTime)-1; | |
| 424 callTime = PR_IntervalNow(); | |
| 425 rc = PR_ExitMonitor( mon->mon ); | |
| 426 now = PR_IntervalNow(); | |
| 427 callTime = now - callTime; | |
| 428 if ( mec == 1 ) | |
| 429 heldTime = now - mon->time; | |
| 430 Vtrace( ExitMonitor, mon->ltype, callTime, heldTime, mon, line, file ); | |
| 431 return( rc ); | |
| 432 } /* --- end pz_ExitMonitor() --- */ | |
| 433 | |
| 434 extern PRIntn | |
| 435 pz_GetMonitorEntryCount( | |
| 436 PZMonitor *mon, | |
| 437 char *file, | |
| 438 PRIntn line | |
| 439 ) | |
| 440 { | |
| 441 return( PR_GetMonitorEntryCount(mon->mon)); | |
| 442 } /* --- end pz_GetMonitorEntryCount() --- */ | |
| 443 | |
| 444 | |
| 445 extern PRStatus | |
| 446 pz_Wait( | |
| 447 PZMonitor *mon, | |
| 448 PRIntervalTime ticks, | |
| 449 char *file, | |
| 450 PRIntn line | |
| 451 ) | |
| 452 { | |
| 453 PRStatus rc; | |
| 454 PRIntervalTime callTime; | |
| 455 | |
| 456 callTime = PR_IntervalNow(); | |
| 457 rc = PR_Wait( mon->mon, ticks ); | |
| 458 callTime = PR_IntervalNow() - callTime; | |
| 459 Vtrace( Wait, mon->ltype, callTime, 0, mon, line, file ); | |
| 460 return( rc ); | |
| 461 } /* --- end pz_Wait() --- */ | |
| 462 | |
| 463 extern PRStatus | |
| 464 pz_Notify( | |
| 465 PZMonitor *mon, | |
| 466 char *file, | |
| 467 PRIntn line | |
| 468 ) | |
| 469 { | |
| 470 PRStatus rc; | |
| 471 PRIntervalTime callTime; | |
| 472 | |
| 473 callTime = PR_IntervalNow(); | |
| 474 rc = PR_Notify( mon->mon ); | |
| 475 callTime = PR_IntervalNow() - callTime; | |
| 476 Vtrace( Notify, mon->ltype, callTime, 0, mon, line, file ); | |
| 477 return( rc ); | |
| 478 } /* --- end pz_Notify() --- */ | |
| 479 | |
| 480 extern PRStatus | |
| 481 pz_NotifyAll( | |
| 482 PZMonitor *mon, | |
| 483 char *file, | |
| 484 PRIntn line | |
| 485 ) | |
| 486 { | |
| 487 PRStatus rc; | |
| 488 PRIntervalTime callTime; | |
| 489 | |
| 490 callTime = PR_IntervalNow(); | |
| 491 rc = PR_NotifyAll( mon->mon ); | |
| 492 callTime = PR_IntervalNow() - callTime; | |
| 493 Vtrace( NotifyAll, mon->ltype, callTime, 0, mon, line, file ); | |
| 494 return( rc ); | |
| 495 } /* --- end pz_NotifyAll() --- */ | |
| 496 | |
| 497 #endif /* NEED_NSS_ILOCK */ | |
| 498 /* --- end nssilock.c --------------------------------- */ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2078763002:
Delete bundled copy of NSS and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/nss@master