1 """ 2 A stress-test of sorts for LLDB's handling of threads in the inferior. 3 4 This test sets a breakpoint in the main thread where test parameters (numbers of 5 threads) can be adjusted, runs the inferior to that point, and modifies the 6 locals that control the event thread counts. This test also sets a breakpoint in 7 breakpoint_func (the function executed by each 'breakpoint' thread) and a 8 watchpoint on a global modified in watchpoint_func. The inferior is continued 9 until exit or a crash takes place, and the number of events seen by LLDB is 10 verified to match the expected number of events. 11 """ 12 13 import os, signal, time 14 import unittest2 15 import lldb 16 from lldbtest import * 17 import lldbutil 18 19 # ================================================== 20 # Dictionary of signal names 21 # ================================================== 22 signal_names = dict((getattr(signal, n), n) \ 23 for n in dir(signal) if n.startswith('SIG') and '_' not in n ) 24 25 26 class ConcurrentEventsTestCase(TestBase): 27 28 mydir = os.path.join("functionalities", "thread", "concurrent_events") 29 30 # 31 ## Tests for multiple threads that generate a single event. 32 # 33 @unittest2.skipIf(TestBase.skipLongRunningTest(), "Skip this long running test") 34 @dwarf_test 35 def test_many_breakpoints_dwarf(self): 36 """Test 100 breakpoints from 100 threads.""" 37 self.buildDwarf(dictionary=self.getBuildFlags()) 38 self.do_thread_actions(num_breakpoint_threads=100) 39 40 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 41 @unittest2.skipIf(TestBase.skipLongRunningTest(), "Skip this long running test") 42 @dwarf_test 43 def test_many_watchpoints_dwarf(self): 44 """Test 100 watchpoints from 100 threads.""" 45 self.buildDwarf(dictionary=self.getBuildFlags()) 46 self.do_thread_actions(num_watchpoint_threads=100) 47 48 @unittest2.skipIf(TestBase.skipLongRunningTest(), "Skip this long running test") 49 @dwarf_test 50 def test_many_signals_dwarf(self): 51 """Test 100 signals from 100 threads.""" 52 self.buildDwarf(dictionary=self.getBuildFlags()) 53 self.do_thread_actions(num_signal_threads=100) 54 55 @unittest2.skipIf(TestBase.skipLongRunningTest(), "Skip this long running test") 56 @dwarf_test 57 def test_many_crash_dwarf(self): 58 """Test 100 threads that cause a segfault.""" 59 self.buildDwarf(dictionary=self.getBuildFlags()) 60 self.do_thread_actions(num_crash_threads=100) 61 62 63 # 64 ## Tests for concurrent signal and breakpoint 65 # 66 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 67 @dwarf_test 68 def test_signal_break_dwarf(self): 69 """Test signal and a breakpoint in multiple threads.""" 70 self.buildDwarf(dictionary=self.getBuildFlags()) 71 self.do_thread_actions(num_breakpoint_threads=1, num_signal_threads=1) 72 73 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 74 @dwarf_test 75 def test_delay_signal_break_dwarf(self): 76 """Test (1-second delay) signal and a breakpoint in multiple threads.""" 77 self.buildDwarf(dictionary=self.getBuildFlags()) 78 self.do_thread_actions(num_breakpoint_threads=1, num_delay_signal_threads=1) 79 80 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 81 @dwarf_test 82 def test_signal_delay_break_dwarf(self): 83 """Test signal and a (1 second delay) breakpoint in multiple threads.""" 84 self.buildDwarf(dictionary=self.getBuildFlags()) 85 self.do_thread_actions(num_delay_breakpoint_threads=1, num_signal_threads=1) 86 87 88 # 89 ## Tests for concurrent watchpoint and breakpoint 90 # 91 @dwarf_test 92 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 93 def test_watch_break_dwarf(self): 94 """Test watchpoint and a breakpoint in multiple threads.""" 95 self.buildDwarf(dictionary=self.getBuildFlags()) 96 self.do_thread_actions(num_breakpoint_threads=1, num_watchpoint_threads=1) 97 98 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 99 @dwarf_test 100 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 101 def test_delay_watch_break_dwarf(self): 102 """Test (1-second delay) watchpoint and a breakpoint in multiple threads.""" 103 self.buildDwarf(dictionary=self.getBuildFlags()) 104 self.do_thread_actions(num_breakpoint_threads=1, num_delay_watchpoint_threads=1) 105 106 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 107 @dwarf_test 108 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 109 def test_watch_break_dwarf(self): 110 """Test watchpoint and a (1 second delay) breakpoint in multiple threads.""" 111 self.buildDwarf(dictionary=self.getBuildFlags()) 112 self.do_thread_actions(num_delay_breakpoint_threads=1, num_watchpoint_threads=1) 113 114 # 115 ## Tests for concurrent signal and watchpoint 116 # 117 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 118 @dwarf_test 119 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 120 def test_signal_watch_dwarf(self): 121 """Test a watchpoint and a signal in multiple threads.""" 122 self.buildDwarf(dictionary=self.getBuildFlags()) 123 self.do_thread_actions(num_signal_threads=1, num_watchpoint_threads=1) 124 125 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 126 @dwarf_test 127 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 128 def test_delay_signal_watch_dwarf(self): 129 """Test a watchpoint and a (1 second delay) signal in multiple threads.""" 130 self.buildDwarf(dictionary=self.getBuildFlags()) 131 self.do_thread_actions(num_delay_signal_threads=1, num_watchpoint_threads=1) 132 133 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 134 @dwarf_test 135 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 136 def test_signal_delay_watch_dwarf(self): 137 """Test a (1 second delay) watchpoint and a signal in multiple threads.""" 138 self.buildDwarf(dictionary=self.getBuildFlags()) 139 self.do_thread_actions(num_signal_threads=1, num_delay_watchpoint_threads=1) 140 141 142 # 143 ## Tests for multiple breakpoint threads 144 # 145 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 146 @dwarf_test 147 def test_two_breakpoint_threads_dwarf(self): 148 """Test two threads that trigger a breakpoint. """ 149 self.buildDwarf(dictionary=self.getBuildFlags()) 150 self.do_thread_actions(num_breakpoint_threads=2) 151 152 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 153 @dwarf_test 154 def test_breakpoint_one_delay_breakpoint_threads_dwarf(self): 155 """Test threads that trigger a breakpoint where one thread has a 1 second delay. """ 156 self.buildDwarf(dictionary=self.getBuildFlags()) 157 self.do_thread_actions(num_breakpoint_threads=1, 158 num_delay_breakpoint_threads=1) 159 160 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 161 @dwarf_test 162 def test_two_breakpoints_one_signal_dwarf(self): 163 """Test two threads that trigger a breakpoint and one signal thread. """ 164 self.buildDwarf(dictionary=self.getBuildFlags()) 165 self.do_thread_actions(num_breakpoint_threads=2, num_signal_threads=1) 166 167 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 168 @dwarf_test 169 def test_breakpoint_delay_breakpoint_one_signal_dwarf(self): 170 """Test two threads that trigger a breakpoint (one with a 1 second delay) and one signal thread. """ 171 self.buildDwarf(dictionary=self.getBuildFlags()) 172 self.do_thread_actions(num_breakpoint_threads=1, 173 num_delay_breakpoint_threads=1, 174 num_signal_threads=1) 175 176 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 177 @dwarf_test 178 def test_two_breakpoints_one_delay_signal_dwarf(self): 179 """Test two threads that trigger a breakpoint and one (1 second delay) signal thread. """ 180 self.buildDwarf(dictionary=self.getBuildFlags()) 181 self.do_thread_actions(num_breakpoint_threads=2, num_delay_signal_threads=1) 182 183 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 184 @dwarf_test 185 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 186 def test_two_breakpoints_one_watchpoint_dwarf(self): 187 """Test two threads that trigger a breakpoint and one watchpoint thread. """ 188 self.buildDwarf(dictionary=self.getBuildFlags()) 189 self.do_thread_actions(num_breakpoint_threads=2, num_watchpoint_threads=1) 190 191 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 192 @dwarf_test 193 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 194 def test_breakpoints_delayed_breakpoint_one_watchpoint_dwarf(self): 195 """Test a breakpoint, a delayed breakpoint, and one watchpoint thread. """ 196 self.buildDwarf(dictionary=self.getBuildFlags()) 197 self.do_thread_actions(num_breakpoint_threads=1, 198 num_delay_breakpoint_threads=1, 199 num_watchpoint_threads=1) 200 201 # 202 ## Tests for multiple watchpoint threads 203 # 204 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 205 @dwarf_test 206 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 207 def test_two_watchpoint_threads_dwarf(self): 208 """Test two threads that trigger a watchpoint. """ 209 self.buildDwarf(dictionary=self.getBuildFlags()) 210 self.do_thread_actions(num_watchpoint_threads=2) 211 212 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 213 @dwarf_test 214 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 215 def test_watchpoint_with_delay_waychpoint_threads_dwarf(self): 216 """Test two threads that trigger a watchpoint where one thread has a 1 second delay. """ 217 self.buildDwarf(dictionary=self.getBuildFlags()) 218 self.do_thread_actions(num_watchpoint_threads=1, 219 num_delay_watchpoint_threads=1) 220 221 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 222 @dwarf_test 223 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 224 def test_two_watchpoints_one_breakpoint_dwarf(self): 225 """Test two threads that trigger a watchpoint and one breakpoint thread. """ 226 self.buildDwarf(dictionary=self.getBuildFlags()) 227 self.do_thread_actions(num_watchpoint_threads=2, num_breakpoint_threads=1) 228 229 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 230 @dwarf_test 231 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 232 def test_two_watchpoints_one_delay_breakpoint_dwarf(self): 233 """Test two threads that trigger a watchpoint and one (1 second delay) breakpoint thread. """ 234 self.buildDwarf(dictionary=self.getBuildFlags()) 235 self.do_thread_actions(num_watchpoint_threads=2, num_delay_breakpoint_threads=1) 236 237 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 238 @dwarf_test 239 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 240 def test_watchpoint_delay_watchpoint_one_breakpoint_dwarf(self): 241 """Test two threads that trigger a watchpoint (one with a 1 second delay) and one breakpoint thread. """ 242 self.buildDwarf(dictionary=self.getBuildFlags()) 243 self.do_thread_actions(num_watchpoint_threads=1, 244 num_delay_watchpoint_threads=1, 245 num_breakpoint_threads=1) 246 247 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 248 @dwarf_test 249 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 250 def test_two_watchpoints_one_signal_dwarf(self): 251 """Test two threads that trigger a watchpoint and one signal thread. """ 252 self.buildDwarf(dictionary=self.getBuildFlags()) 253 self.do_thread_actions(num_watchpoint_threads=2, num_signal_threads=1) 254 255 # 256 ## Test for watchpoint, signal and breakpoint happening concurrently 257 # 258 @dwarf_test 259 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 260 def test_signal_watch_break_dwarf(self): 261 """Test a signal/watchpoint/breakpoint in multiple threads.""" 262 self.buildDwarf(dictionary=self.getBuildFlags()) 263 self.do_thread_actions(num_signal_threads=1, 264 num_watchpoint_threads=1, 265 num_breakpoint_threads=1) 266 267 @dwarf_test 268 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 269 def test_signal_watch_break_dwarf(self): 270 """Test one signal thread with 5 watchpoint and breakpoint threads.""" 271 self.buildDwarf(dictionary=self.getBuildFlags()) 272 self.do_thread_actions(num_signal_threads=1, 273 num_watchpoint_threads=5, 274 num_breakpoint_threads=5) 275 276 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 277 @dwarf_test 278 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 279 def test_signal_watch_break_dwarf(self): 280 """Test with 5 watchpoint and breakpoint threads.""" 281 self.buildDwarf(dictionary=self.getBuildFlags()) 282 self.do_thread_actions(num_watchpoint_threads=5, 283 num_breakpoint_threads=5) 284 285 286 # 287 ## Test for crashing threads happening concurrently with other events 288 # 289 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 290 @dwarf_test 291 def test_crash_with_break_dwarf(self): 292 """ Test a thread that crashes while another thread hits a breakpoint.""" 293 self.buildDwarf(dictionary=self.getBuildFlags()) 294 self.do_thread_actions(num_crash_threads=1, num_breakpoint_threads=1) 295 296 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 297 @dwarf_test 298 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 299 def test_crash_with_watchpoint_dwarf(self): 300 """ Test a thread that crashes while another thread hits a watchpoint.""" 301 self.buildDwarf(dictionary=self.getBuildFlags()) 302 self.do_thread_actions(num_crash_threads=1, num_watchpoint_threads=1) 303 304 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 305 @dwarf_test 306 def test_crash_with_signal_dwarf(self): 307 """ Test a thread that crashes while another thread generates a signal.""" 308 self.buildDwarf(dictionary=self.getBuildFlags()) 309 self.do_thread_actions(num_crash_threads=1, num_signal_threads=1) 310 311 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 312 @dwarf_test 313 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 314 def test_crash_with_watchpoint_breakpoint_signal_dwarf(self): 315 """ Test a thread that crashes while other threads generate a signal and hit a watchpoint and breakpoint. """ 316 self.buildDwarf(dictionary=self.getBuildFlags()) 317 self.do_thread_actions(num_crash_threads=1, 318 num_breakpoint_threads=1, 319 num_signal_threads=1, 320 num_watchpoint_threads=1) 321 322 @expectedFailureFreeBSD('llvm.org/pr16706') # Watchpoints fail on FreeBSD 323 @dwarf_test 324 @skipIfLinux # llvm.org/pr16714 - LLDB sometimes crashes when setting watchpoints in multithreaded programs 325 def test_delayed_crash_with_breakpoint_watchpoint_dwarf(self): 326 """ Test a thread with a delayed crash while other threads hit a watchpoint and a breakpoint. """ 327 self.buildDwarf(dictionary=self.getBuildFlags()) 328 self.do_thread_actions(num_delay_crash_threads=1, 329 num_breakpoint_threads=1, 330 num_watchpoint_threads=1) 331 332 @expectedFailureFreeBSD("llvm.org/pr16696") # threaded inferior not yet implemented on FreeBSD 333 @dwarf_test 334 def test_delayed_crash_with_breakpoint_signal_dwarf(self): 335 """ Test a thread with a delayed crash while other threads generate a signal and hit a breakpoint. """ 336 self.buildDwarf(dictionary=self.getBuildFlags()) 337 self.do_thread_actions(num_delay_crash_threads=1, 338 num_breakpoint_threads=1, 339 num_signal_threads=1) 340 341 def setUp(self): 342 # Call super's setUp(). 343 TestBase.setUp(self) 344 # Find the line number for our breakpoint. 345 self.filename = 'main.cpp' 346 self.thread_breakpoint_line = line_number(self.filename, '// Set breakpoint here') 347 self.setup_breakpoint_line = line_number(self.filename, '// Break here and adjust num') 348 self.finish_breakpoint_line = line_number(self.filename, '// Break here and verify one thread is active') 349 350 def describe_threads(self): 351 ret = [] 352 for x in self.inferior_process: 353 id = x.GetIndexID() 354 reason = x.GetStopReason() 355 status = "stopped" if x.IsStopped() else "running" 356 reason_str = lldbutil.stop_reason_to_str(reason) 357 if reason == lldb.eStopReasonBreakpoint: 358 bpid = x.GetStopReasonDataAtIndex(0) 359 bp = self.inferior_target.FindBreakpointByID(bpid) 360 reason_str = "%s hit %d times" % (lldbutil.get_description(bp), bp.GetHitCount()) 361 elif reason == lldb.eStopReasonWatchpoint: 362 watchid = x.GetStopReasonDataAtIndex(0) 363 watch = self.inferior_target.FindWatchpointByID(watchid) 364 reason_str = "%s hit %d times" % (lldbutil.get_description(watch), watch.GetHitCount()) 365 elif reason == lldb.eStopReasonSignal: 366 reason_str = "signal %s" % (signal_names[x.GetStopReasonDataAtIndex(0)]) 367 368 location = "\t".join([lldbutil.get_description(x.GetFrameAtIndex(i)) for i in range(x.GetNumFrames())]) 369 ret.append("thread %d %s due to %s at\n\t%s" % (id, status, reason_str, location)) 370 return ret 371 372 def add_breakpoint(self, line, descriptions): 373 """ Adds a breakpoint at self.filename:line and appends its description to descriptions, and 374 returns the LLDB SBBreakpoint object. 375 """ 376 377 bpno = lldbutil.run_break_set_by_file_and_line(self, self.filename, line, num_expected_locations=-1) 378 bp = self.inferior_target.FindBreakpointByID(bpno) 379 descriptions.append(": file = 'main.cpp', line = %d" % self.finish_breakpoint_line) 380 return bp 381 382 def inferior_done(self): 383 """ Returns true if the inferior is done executing all the event threads (and is stopped at self.finish_breakpoint, 384 or has terminated execution. 385 """ 386 return self.finish_breakpoint.GetHitCount() > 0 or \ 387 self.crash_count > 0 or \ 388 self.inferior_process.GetState == lldb.eStateExited 389 390 def do_thread_actions(self, 391 num_breakpoint_threads = 0, 392 num_signal_threads = 0, 393 num_watchpoint_threads = 0, 394 num_crash_threads = 0, 395 num_delay_breakpoint_threads = 0, 396 num_delay_signal_threads = 0, 397 num_delay_watchpoint_threads = 0, 398 num_delay_crash_threads = 0): 399 """ Sets a breakpoint in the main thread where test parameters (numbers of threads) can be adjusted, runs the inferior 400 to that point, and modifies the locals that control the event thread counts. Also sets a breakpoint in 401 breakpoint_func (the function executed by each 'breakpoint' thread) and a watchpoint on a global modified in 402 watchpoint_func. The inferior is continued until exit or a crash takes place, and the number of events seen by LLDB 403 is verified to match the expected number of events. 404 """ 405 exe = os.path.join(os.getcwd(), "a.out") 406 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) 407 408 # Get the target 409 self.inferior_target = self.dbg.GetSelectedTarget() 410 411 expected_bps = [] 412 413 # Initialize all the breakpoints (main thread/aux thread) 414 self.setup_breakpoint = self.add_breakpoint(self.setup_breakpoint_line, expected_bps) 415 self.finish_breakpoint = self.add_breakpoint(self.finish_breakpoint_line, expected_bps) 416 417 # Set the thread breakpoint 418 if num_breakpoint_threads + num_delay_breakpoint_threads > 0: 419 self.thread_breakpoint = self.add_breakpoint(self.thread_breakpoint_line, expected_bps) 420 421 # Verify breakpoints 422 self.expect("breakpoint list -f", "Breakpoint locations shown correctly", substrs = expected_bps) 423 424 # Run the program. 425 self.runCmd("run", RUN_SUCCEEDED) 426 427 # Check we are at line self.setup_breakpoint 428 self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT, 429 substrs = ["stop reason = breakpoint 1."]) 430 431 # Initialize the (single) watchpoint on the global variable (g_watchme) 432 if num_watchpoint_threads + num_delay_watchpoint_threads > 0: 433 self.runCmd("watchpoint set variable g_watchme") 434 for w in self.inferior_target.watchpoint_iter(): 435 self.thread_watchpoint = w 436 self.assertTrue("g_watchme" in str(self.thread_watchpoint), "Watchpoint location not shown correctly") 437 438 # Get the process 439 self.inferior_process = self.inferior_target.GetProcess() 440 441 # We should be stopped at the setup site where we can set the number of 442 # threads doing each action (break/crash/signal/watch) 443 self.assertEqual(self.inferior_process.GetNumThreads(), 1, 'Expected to stop before any additional threads are spawned.') 444 445 self.runCmd("expr num_breakpoint_threads=%d" % num_breakpoint_threads) 446 self.runCmd("expr num_crash_threads=%d" % num_crash_threads) 447 self.runCmd("expr num_signal_threads=%d" % num_signal_threads) 448 self.runCmd("expr num_watchpoint_threads=%d" % num_watchpoint_threads) 449 450 self.runCmd("expr num_delay_breakpoint_threads=%d" % num_delay_breakpoint_threads) 451 self.runCmd("expr num_delay_crash_threads=%d" % num_delay_crash_threads) 452 self.runCmd("expr num_delay_signal_threads=%d" % num_delay_signal_threads) 453 self.runCmd("expr num_delay_watchpoint_threads=%d" % num_delay_watchpoint_threads) 454 455 # Continue the inferior so threads are spawned 456 self.runCmd("continue") 457 458 # Make sure we see all the threads. The inferior program's threads all synchronize with a pseudo-barrier; that is, 459 # the inferior program ensures all threads are started and running before any thread triggers its 'event'. 460 num_threads = self.inferior_process.GetNumThreads() 461 expected_num_threads = num_breakpoint_threads + num_delay_breakpoint_threads \ 462 + num_signal_threads + num_delay_signal_threads \ 463 + num_watchpoint_threads + num_delay_watchpoint_threads \ 464 + num_crash_threads + num_delay_crash_threads + 1 465 self.assertEqual(num_threads, expected_num_threads, 466 'Expected to see %d threads, but seeing %d. Details:\n%s' % (expected_num_threads, 467 num_threads, 468 "\n\t".join(self.describe_threads()))) 469 470 self.signal_count = len(lldbutil.get_stopped_threads(self.inferior_process, lldb.eStopReasonSignal)) 471 self.crash_count = len(lldbutil.get_stopped_threads(self.inferior_process, lldb.eStopReasonException)) 472 473 # Run to completion (or crash) 474 while not self.inferior_done(): 475 if self.TraceOn(): 476 self.runCmd("thread backtrace all") 477 self.runCmd("continue") 478 self.signal_count += len(lldbutil.get_stopped_threads(self.inferior_process, lldb.eStopReasonSignal)) 479 self.crash_count += len(lldbutil.get_stopped_threads(self.inferior_process, lldb.eStopReasonException)) 480 481 if num_crash_threads > 0 or num_delay_crash_threads > 0: 482 # Expecting a crash 483 self.assertTrue(self.crash_count > 0, 484 "Expecting at least one thread to crash. Details: %s" % "\t\n".join(self.describe_threads())) 485 486 # Ensure the zombie process is reaped 487 self.runCmd("process kill") 488 489 elif num_crash_threads == 0 and num_delay_crash_threads == 0: 490 # There should be a single active thread (the main one) which hit the breakpoint after joining 491 self.assertEqual(1, self.finish_breakpoint.GetHitCount(), "Expected main thread (finish) breakpoint to be hit once") 492 493 num_threads = self.inferior_process.GetNumThreads() 494 self.assertEqual(1, num_threads, "Expecting 1 thread but seeing %d. Details:%s" % (num_threads, 495 "\n\t".join(self.describe_threads()))) 496 self.runCmd("continue") 497 498 # The inferior process should have exited without crashing 499 self.assertEqual(0, self.crash_count, "Unexpected thread(s) in crashed state") 500 self.assertTrue(self.inferior_process.GetState() == lldb.eStateExited, PROCESS_EXITED) 501 502 # Verify the number of actions took place matches expected numbers 503 expected_breakpoint_threads = num_delay_breakpoint_threads + num_breakpoint_threads 504 breakpoint_hit_count = self.thread_breakpoint.GetHitCount() if expected_breakpoint_threads > 0 else 0 505 self.assertEqual(expected_breakpoint_threads, breakpoint_hit_count, 506 "Expected %d breakpoint hits, but got %d" % (expected_breakpoint_threads, breakpoint_hit_count)) 507 508 expected_signal_threads = num_delay_signal_threads + num_signal_threads 509 self.assertEqual(expected_signal_threads, self.signal_count, 510 "Expected %d stops due to signal delivery, but got %d" % (expected_signal_threads, self.signal_count)) 511 512 expected_watchpoint_threads = num_delay_watchpoint_threads + num_watchpoint_threads 513 watchpoint_hit_count = self.thread_watchpoint.GetHitCount() if expected_watchpoint_threads > 0 else 0 514 self.assertEqual(expected_watchpoint_threads, watchpoint_hit_count, 515 "Expected %d watchpoint hits, got %d" % (expected_watchpoint_threads, watchpoint_hit_count)) 516 517 518 if __name__ == '__main__': 519 import atexit 520 lldb.SBDebugger.Initialize() 521 atexit.register(lambda: lldb.SBDebugger.Terminate()) 522 unittest2.main() 523
