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ThreadList.cpp
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1 //===-- ThreadList.cpp ------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include <stdlib.h>
10 
11 #include <algorithm>
12 
13 #include "lldb/Target/Process.h"
15 #include "lldb/Target/Thread.h"
16 #include "lldb/Target/ThreadList.h"
17 #include "lldb/Target/ThreadPlan.h"
19 #include "lldb/Utility/Log.h"
20 #include "lldb/Utility/State.h"
21 
22 using namespace lldb;
23 using namespace lldb_private;
24 
25 ThreadList::ThreadList(Process *process)
26  : ThreadCollection(), m_process(process), m_stop_id(0),
27  m_selected_tid(LLDB_INVALID_THREAD_ID) {}
28 
29 ThreadList::ThreadList(const ThreadList &rhs)
31  m_selected_tid() {
32  // Use the assignment operator since it uses the mutex
33  *this = rhs;
34 }
35 
37  if (this != &rhs) {
38  // Lock both mutexes to make sure neither side changes anyone on us while
39  // the assignment occurs
40  std::lock(GetMutex(), rhs.GetMutex());
41  std::lock_guard<std::recursive_mutex> guard(GetMutex(), std::adopt_lock);
42  std::lock_guard<std::recursive_mutex> rhs_guard(rhs.GetMutex(),
43  std::adopt_lock);
44 
45  m_process = rhs.m_process;
46  m_stop_id = rhs.m_stop_id;
47  m_threads = rhs.m_threads;
49  }
50  return *this;
51 }
52 
54  // Clear the thread list. Clear will take the mutex lock which will ensure
55  // that if anyone is using the list they won't get it removed while using it.
56  Clear();
57 }
58 
60  if (m_expression_tid_stack.empty())
61  return GetSelectedThread();
62  ThreadSP expr_thread_sp = FindThreadByID(m_expression_tid_stack.back());
63  if (expr_thread_sp)
64  return expr_thread_sp;
65  else
66  return GetSelectedThread();
67 }
68 
70  m_expression_tid_stack.push_back(tid);
71 }
72 
74  assert(m_expression_tid_stack.back() == tid);
75  m_expression_tid_stack.pop_back();
76 }
77 
79 
80 void ThreadList::SetStopID(uint32_t stop_id) { m_stop_id = stop_id; }
81 
82 uint32_t ThreadList::GetSize(bool can_update) {
83  std::lock_guard<std::recursive_mutex> guard(GetMutex());
84 
85  if (can_update)
87  return m_threads.size();
88 }
89 
90 ThreadSP ThreadList::GetThreadAtIndex(uint32_t idx, bool can_update) {
91  std::lock_guard<std::recursive_mutex> guard(GetMutex());
92 
93  if (can_update)
95 
96  ThreadSP thread_sp;
97  if (idx < m_threads.size())
98  thread_sp = m_threads[idx];
99  return thread_sp;
100 }
101 
102 ThreadSP ThreadList::FindThreadByID(lldb::tid_t tid, bool can_update) {
103  std::lock_guard<std::recursive_mutex> guard(GetMutex());
104 
105  if (can_update)
107 
108  ThreadSP thread_sp;
109  uint32_t idx = 0;
110  const uint32_t num_threads = m_threads.size();
111  for (idx = 0; idx < num_threads; ++idx) {
112  if (m_threads[idx]->GetID() == tid) {
113  thread_sp = m_threads[idx];
114  break;
115  }
116  }
117  return thread_sp;
118 }
119 
120 ThreadSP ThreadList::FindThreadByProtocolID(lldb::tid_t tid, bool can_update) {
121  std::lock_guard<std::recursive_mutex> guard(GetMutex());
122 
123  if (can_update)
125 
126  ThreadSP thread_sp;
127  uint32_t idx = 0;
128  const uint32_t num_threads = m_threads.size();
129  for (idx = 0; idx < num_threads; ++idx) {
130  if (m_threads[idx]->GetProtocolID() == tid) {
131  thread_sp = m_threads[idx];
132  break;
133  }
134  }
135  return thread_sp;
136 }
137 
138 ThreadSP ThreadList::RemoveThreadByID(lldb::tid_t tid, bool can_update) {
139  std::lock_guard<std::recursive_mutex> guard(GetMutex());
140 
141  if (can_update)
143 
144  ThreadSP thread_sp;
145  uint32_t idx = 0;
146  const uint32_t num_threads = m_threads.size();
147  for (idx = 0; idx < num_threads; ++idx) {
148  if (m_threads[idx]->GetID() == tid) {
149  thread_sp = m_threads[idx];
150  m_threads.erase(m_threads.begin() + idx);
151  break;
152  }
153  }
154  return thread_sp;
155 }
156 
158  bool can_update) {
159  std::lock_guard<std::recursive_mutex> guard(GetMutex());
160 
161  if (can_update)
163 
164  ThreadSP thread_sp;
165  uint32_t idx = 0;
166  const uint32_t num_threads = m_threads.size();
167  for (idx = 0; idx < num_threads; ++idx) {
168  if (m_threads[idx]->GetProtocolID() == tid) {
169  thread_sp = m_threads[idx];
170  m_threads.erase(m_threads.begin() + idx);
171  break;
172  }
173  }
174  return thread_sp;
175 }
176 
178  ThreadSP thread_sp;
179  if (thread_ptr) {
180  std::lock_guard<std::recursive_mutex> guard(GetMutex());
181 
182  uint32_t idx = 0;
183  const uint32_t num_threads = m_threads.size();
184  for (idx = 0; idx < num_threads; ++idx) {
185  if (m_threads[idx].get() == thread_ptr) {
186  thread_sp = m_threads[idx];
187  break;
188  }
189  }
190  }
191  return thread_sp;
192 }
193 
194 ThreadSP ThreadList::GetBackingThread(const ThreadSP &real_thread) {
195  std::lock_guard<std::recursive_mutex> guard(GetMutex());
196 
197  ThreadSP thread_sp;
198  const uint32_t num_threads = m_threads.size();
199  for (uint32_t idx = 0; idx < num_threads; ++idx) {
200  if (m_threads[idx]->GetBackingThread() == real_thread) {
201  thread_sp = m_threads[idx];
202  break;
203  }
204  }
205  return thread_sp;
206 }
207 
208 ThreadSP ThreadList::FindThreadByIndexID(uint32_t index_id, bool can_update) {
209  std::lock_guard<std::recursive_mutex> guard(GetMutex());
210 
211  if (can_update)
213 
214  ThreadSP thread_sp;
215  const uint32_t num_threads = m_threads.size();
216  for (uint32_t idx = 0; idx < num_threads; ++idx) {
217  if (m_threads[idx]->GetIndexID() == index_id) {
218  thread_sp = m_threads[idx];
219  break;
220  }
221  }
222  return thread_sp;
223 }
224 
225 bool ThreadList::ShouldStop(Event *event_ptr) {
226  // Running events should never stop, obviously...
227 
229 
230  // The ShouldStop method of the threads can do a whole lot of work, figuring
231  // out whether the thread plan conditions are met. So we don't want to keep
232  // the ThreadList locked the whole time we are doing this.
233  // FIXME: It is possible that running code could cause new threads
234  // to be created. If that happens, we will miss asking them whether they
235  // should stop. This is not a big deal since we haven't had a chance to hang
236  // any interesting operations on those threads yet.
237 
238  collection threads_copy;
239  {
240  // Scope for locker
241  std::lock_guard<std::recursive_mutex> guard(GetMutex());
242 
244  for (lldb::ThreadSP thread_sp : m_threads) {
245  // This is an optimization... If we didn't let a thread run in between
246  // the previous stop and this one, we shouldn't have to consult it for
247  // ShouldStop. So just leave it off the list we are going to inspect. On
248  // Linux, if a thread-specific conditional breakpoint was hit, it won't
249  // necessarily be the thread that hit the breakpoint itself that
250  // evaluates the conditional expression, so the thread that hit the
251  // breakpoint could still be asked to stop, even though it hasn't been
252  // allowed to run since the previous stop.
253  if (thread_sp->GetTemporaryResumeState() != eStateSuspended ||
254  thread_sp->IsStillAtLastBreakpointHit())
255  threads_copy.push_back(thread_sp);
256  }
257 
258  // It is possible the threads we were allowing to run all exited and then
259  // maybe the user interrupted or something, then fall back on looking at
260  // all threads:
261 
262  if (threads_copy.size() == 0)
263  threads_copy = m_threads;
264  }
265 
266  collection::iterator pos, end = threads_copy.end();
267 
268  if (log) {
269  log->PutCString("");
270  log->Printf("ThreadList::%s: %" PRIu64 " threads, %" PRIu64
271  " unsuspended threads",
272  __FUNCTION__, (uint64_t)m_threads.size(),
273  (uint64_t)threads_copy.size());
274  }
275 
276  bool did_anybody_stop_for_a_reason = false;
277 
278  // If the event is an Interrupt event, then we're going to stop no matter
279  // what. Otherwise, presume we won't stop.
280  bool should_stop = false;
282  if (log)
283  log->Printf(
284  "ThreadList::%s handling interrupt event, should stop set to true",
285  __FUNCTION__);
286 
287  should_stop = true;
288  }
289 
290  // Now we run through all the threads and get their stop info's. We want to
291  // make sure to do this first before we start running the ShouldStop, because
292  // one thread's ShouldStop could destroy information (like deleting a thread
293  // specific breakpoint another thread had stopped at) which could lead us to
294  // compute the StopInfo incorrectly. We don't need to use it here, we just
295  // want to make sure it gets computed.
296 
297  for (pos = threads_copy.begin(); pos != end; ++pos) {
298  ThreadSP thread_sp(*pos);
299  thread_sp->GetStopInfo();
300  }
301 
302  for (pos = threads_copy.begin(); pos != end; ++pos) {
303  ThreadSP thread_sp(*pos);
304 
305  // We should never get a stop for which no thread had a stop reason, but
306  // sometimes we do see this - for instance when we first connect to a
307  // remote stub. In that case we should stop, since we can't figure out the
308  // right thing to do and stopping gives the user control over what to do in
309  // this instance.
310  //
311  // Note, this causes a problem when you have a thread specific breakpoint,
312  // and a bunch of threads hit the breakpoint, but not the thread which we
313  // are waiting for. All the threads that are not "supposed" to hit the
314  // breakpoint are marked as having no stop reason, which is right, they
315  // should not show a stop reason. But that triggers this code and causes
316  // us to stop seemingly for no reason.
317  //
318  // Since the only way we ever saw this error was on first attach, I'm only
319  // going to trigger set did_anybody_stop_for_a_reason to true unless this
320  // is the first stop.
321  //
322  // If this becomes a problem, we'll have to have another StopReason like
323  // "StopInfoHidden" which will look invalid everywhere but at this check.
324 
325  if (thread_sp->GetProcess()->GetStopID() > 1)
326  did_anybody_stop_for_a_reason = true;
327  else
328  did_anybody_stop_for_a_reason |= thread_sp->ThreadStoppedForAReason();
329 
330  const bool thread_should_stop = thread_sp->ShouldStop(event_ptr);
331  if (thread_should_stop)
332  should_stop |= true;
333  }
334 
335  if (!should_stop && !did_anybody_stop_for_a_reason) {
336  should_stop = true;
337  if (log)
338  log->Printf("ThreadList::%s we stopped but no threads had a stop reason, "
339  "overriding should_stop and stopping.",
340  __FUNCTION__);
341  }
342 
343  if (log)
344  log->Printf("ThreadList::%s overall should_stop = %i", __FUNCTION__,
345  should_stop);
346 
347  if (should_stop) {
348  for (pos = threads_copy.begin(); pos != end; ++pos) {
349  ThreadSP thread_sp(*pos);
350  thread_sp->WillStop();
351  }
352  }
353 
354  return should_stop;
355 }
356 
358  std::lock_guard<std::recursive_mutex> guard(GetMutex());
359 
360  Vote result = eVoteNoOpinion;
362  collection::iterator pos, end = m_threads.end();
363 
365 
366  if (log)
367  log->Printf("ThreadList::%s %" PRIu64 " threads", __FUNCTION__,
368  (uint64_t)m_threads.size());
369 
370  // Run through the threads and ask whether we should report this event. For
371  // stopping, a YES vote wins over everything. A NO vote wins over NO
372  // opinion.
373  for (pos = m_threads.begin(); pos != end; ++pos) {
374  ThreadSP thread_sp(*pos);
375  const Vote vote = thread_sp->ShouldReportStop(event_ptr);
376  switch (vote) {
377  case eVoteNoOpinion:
378  continue;
379 
380  case eVoteYes:
381  result = eVoteYes;
382  break;
383 
384  case eVoteNo:
385  if (result == eVoteNoOpinion) {
386  result = eVoteNo;
387  } else {
388  LLDB_LOG(log,
389  "Thread {0:x} voted {1}, but lost out because result was {2}",
390  thread_sp->GetID(), vote, result);
391  }
392  break;
393  }
394  }
395  LLDB_LOG(log, "Returning {0}", result);
396  return result;
397 }
398 
400  std::lock_guard<std::recursive_mutex> guard(GetMutex());
401 
403  collection::iterator pos, end = m_threads.end();
404  for (pos = m_threads.begin(); pos != end; ++pos) {
405  ThreadSP thread_sp(*pos);
406  thread_sp->SetShouldReportStop(vote);
407  }
408 }
409 
411 
412  std::lock_guard<std::recursive_mutex> guard(GetMutex());
413 
414  Vote result = eVoteNoOpinion;
416  collection::iterator pos, end = m_threads.end();
417 
418  // Run through the threads and ask whether we should report this event. The
419  // rule is NO vote wins over everything, a YES vote wins over no opinion.
420 
422 
423  for (pos = m_threads.begin(); pos != end; ++pos) {
424  if ((*pos)->GetResumeState() != eStateSuspended) {
425  switch ((*pos)->ShouldReportRun(event_ptr)) {
426  case eVoteNoOpinion:
427  continue;
428  case eVoteYes:
429  if (result == eVoteNoOpinion)
430  result = eVoteYes;
431  break;
432  case eVoteNo:
433  if (log)
434  log->Printf("ThreadList::ShouldReportRun() thread %d (0x%4.4" PRIx64
435  ") says don't report.",
436  (*pos)->GetIndexID(), (*pos)->GetID());
437  result = eVoteNo;
438  break;
439  }
440  }
441  }
442  return result;
443 }
444 
446  std::lock_guard<std::recursive_mutex> guard(GetMutex());
447  m_stop_id = 0;
448  m_threads.clear();
450 }
451 
453  std::lock_guard<std::recursive_mutex> guard(GetMutex());
454  const uint32_t num_threads = m_threads.size();
455  for (uint32_t idx = 0; idx < num_threads; ++idx) {
456  m_threads[idx]->DestroyThread();
457  }
458 }
459 
461  std::lock_guard<std::recursive_mutex> guard(GetMutex());
462 
464 
466  if (log && log->GetVerbose())
467  log->Printf("Turning off notification of new threads while single stepping "
468  "a thread.");
469 
470  collection::iterator pos, end = m_threads.end();
471  for (pos = m_threads.begin(); pos != end; ++pos)
472  (*pos)->RefreshStateAfterStop();
473 }
474 
476  // You don't need to update the thread list here, because only threads that
477  // you currently know about have any thread plans.
478  std::lock_guard<std::recursive_mutex> guard(GetMutex());
479 
480  collection::iterator pos, end = m_threads.end();
481  for (pos = m_threads.begin(); pos != end; ++pos)
482  (*pos)->DiscardThreadPlans(true);
483 }
484 
486  // Run through the threads and perform their momentary actions. But we only
487  // do this for threads that are running, user suspended threads stay where
488  // they are.
489 
490  std::lock_guard<std::recursive_mutex> guard(GetMutex());
492 
493  collection::iterator pos, end = m_threads.end();
494 
495  // See if any thread wants to run stopping others. If it does, then we won't
496  // setup the other threads for resume, since they aren't going to get a
497  // chance to run. This is necessary because the SetupForResume might add
498  // "StopOthers" plans which would then get to be part of the who-gets-to-run
499  // negotiation, but they're coming in after the fact, and the threads that
500  // are already set up should take priority.
501 
502  bool wants_solo_run = false;
503 
504  for (pos = m_threads.begin(); pos != end; ++pos) {
505  lldbassert((*pos)->GetCurrentPlan() &&
506  "thread should not have null thread plan");
507  if ((*pos)->GetResumeState() != eStateSuspended &&
508  (*pos)->GetCurrentPlan()->StopOthers()) {
509  if ((*pos)->IsOperatingSystemPluginThread() &&
510  !(*pos)->GetBackingThread())
511  continue;
512  wants_solo_run = true;
513  break;
514  }
515  }
516 
517  if (wants_solo_run) {
519  if (log && log->GetVerbose())
520  log->Printf("Turning on notification of new threads while single "
521  "stepping a thread.");
523  } else {
525  if (log && log->GetVerbose())
526  log->Printf("Turning off notification of new threads while single "
527  "stepping a thread.");
529  }
530 
531  // Give all the threads that are likely to run a last chance to set up their
532  // state before we negotiate who is actually going to get a chance to run...
533  // Don't set to resume suspended threads, and if any thread wanted to stop
534  // others, only call setup on the threads that request StopOthers...
535 
536  for (pos = m_threads.begin(); pos != end; ++pos) {
537  if ((*pos)->GetResumeState() != eStateSuspended &&
538  (!wants_solo_run || (*pos)->GetCurrentPlan()->StopOthers())) {
539  if ((*pos)->IsOperatingSystemPluginThread() &&
540  !(*pos)->GetBackingThread())
541  continue;
542  (*pos)->SetupForResume();
543  }
544  }
545 
546  // Now go through the threads and see if any thread wants to run just itself.
547  // if so then pick one and run it.
548 
549  ThreadList run_me_only_list(m_process);
550 
551  run_me_only_list.SetStopID(m_process->GetStopID());
552 
553  bool run_only_current_thread = false;
554 
555  for (pos = m_threads.begin(); pos != end; ++pos) {
556  ThreadSP thread_sp(*pos);
557  if (thread_sp->GetResumeState() != eStateSuspended &&
558  thread_sp->GetCurrentPlan()->StopOthers()) {
559  if ((*pos)->IsOperatingSystemPluginThread() &&
560  !(*pos)->GetBackingThread())
561  continue;
562 
563  // You can't say "stop others" and also want yourself to be suspended.
564  assert(thread_sp->GetCurrentPlan()->RunState() != eStateSuspended);
565 
566  if (thread_sp == GetSelectedThread()) {
567  // If the currently selected thread wants to run on its own, always let
568  // it.
569  run_only_current_thread = true;
570  run_me_only_list.Clear();
571  run_me_only_list.AddThread(thread_sp);
572  break;
573  }
574 
575  run_me_only_list.AddThread(thread_sp);
576  }
577  }
578 
579  bool need_to_resume = true;
580 
581  if (run_me_only_list.GetSize(false) == 0) {
582  // Everybody runs as they wish:
583  for (pos = m_threads.begin(); pos != end; ++pos) {
584  ThreadSP thread_sp(*pos);
585  StateType run_state;
586  if (thread_sp->GetResumeState() != eStateSuspended)
587  run_state = thread_sp->GetCurrentPlan()->RunState();
588  else
589  run_state = eStateSuspended;
590  if (!thread_sp->ShouldResume(run_state))
591  need_to_resume = false;
592  }
593  } else {
594  ThreadSP thread_to_run;
595 
596  if (run_only_current_thread) {
597  thread_to_run = GetSelectedThread();
598  } else if (run_me_only_list.GetSize(false) == 1) {
599  thread_to_run = run_me_only_list.GetThreadAtIndex(0);
600  } else {
601  int random_thread =
602  (int)((run_me_only_list.GetSize(false) * (double)rand()) /
603  (RAND_MAX + 1.0));
604  thread_to_run = run_me_only_list.GetThreadAtIndex(random_thread);
605  }
606 
607  for (pos = m_threads.begin(); pos != end; ++pos) {
608  ThreadSP thread_sp(*pos);
609  if (thread_sp == thread_to_run) {
610  if (!thread_sp->ShouldResume(thread_sp->GetCurrentPlan()->RunState()))
611  need_to_resume = false;
612  } else
613  thread_sp->ShouldResume(eStateSuspended);
614  }
615  }
616 
617  return need_to_resume;
618 }
619 
621  std::lock_guard<std::recursive_mutex> guard(GetMutex());
622  collection::iterator pos, end = m_threads.end();
623  for (pos = m_threads.begin(); pos != end; ++pos) {
624  // Don't clear out threads that aren't going to get a chance to run, rather
625  // leave their state for the next time around.
626  ThreadSP thread_sp(*pos);
627  if (thread_sp->GetResumeState() != eStateSuspended)
628  thread_sp->DidResume();
629  }
630 }
631 
633  std::lock_guard<std::recursive_mutex> guard(GetMutex());
634  collection::iterator pos, end = m_threads.end();
635  for (pos = m_threads.begin(); pos != end; ++pos) {
636  // Notify threads that the process just stopped. Note, this currently
637  // assumes that all threads in the list stop when the process stops. In
638  // the future we will want to support a debugging model where some threads
639  // continue to run while others are stopped. We either need to handle that
640  // somehow here or create a special thread list containing only threads
641  // which will stop in the code that calls this method (currently
642  // Process::SetPrivateState).
643  ThreadSP thread_sp(*pos);
644  if (StateIsRunningState(thread_sp->GetState()))
645  thread_sp->DidStop();
646  }
647 }
648 
650  std::lock_guard<std::recursive_mutex> guard(GetMutex());
651  ThreadSP thread_sp = FindThreadByID(m_selected_tid);
652  if (!thread_sp.get()) {
653  if (m_threads.size() == 0)
654  return thread_sp;
655  m_selected_tid = m_threads[0]->GetID();
656  thread_sp = m_threads[0];
657  }
658  return thread_sp;
659 }
660 
662  std::lock_guard<std::recursive_mutex> guard(GetMutex());
663  ThreadSP selected_thread_sp(FindThreadByID(tid));
664  if (selected_thread_sp) {
665  m_selected_tid = tid;
666  selected_thread_sp->SetDefaultFileAndLineToSelectedFrame();
667  } else
669 
670  if (notify)
672 
674 }
675 
677  std::lock_guard<std::recursive_mutex> guard(GetMutex());
678  ThreadSP selected_thread_sp(FindThreadByIndexID(index_id));
679  if (selected_thread_sp.get()) {
680  m_selected_tid = selected_thread_sp->GetID();
681  selected_thread_sp->SetDefaultFileAndLineToSelectedFrame();
682  } else
684 
685  if (notify)
687 
689 }
690 
692  ThreadSP selected_thread_sp(FindThreadByID(tid));
693  if (selected_thread_sp->EventTypeHasListeners(
695  selected_thread_sp->BroadcastEvent(
697  new Thread::ThreadEventData(selected_thread_sp));
698 }
699 
701  if (this != &rhs) {
702  // Lock both mutexes to make sure neither side changes anyone on us while
703  // the assignment occurs
704  std::lock_guard<std::recursive_mutex> guard(GetMutex());
705 
706  m_process = rhs.m_process;
707  m_stop_id = rhs.m_stop_id;
708  m_threads.swap(rhs.m_threads);
710 
711  // Now we look for threads that we are done with and make sure to clear
712  // them up as much as possible so anyone with a shared pointer will still
713  // have a reference, but the thread won't be of much use. Using
714  // std::weak_ptr for all backward references (such as a thread to a
715  // process) will eventually solve this issue for us, but for now, we need
716  // to work around the issue
717  collection::iterator rhs_pos, rhs_end = rhs.m_threads.end();
718  for (rhs_pos = rhs.m_threads.begin(); rhs_pos != rhs_end; ++rhs_pos) {
719  const lldb::tid_t tid = (*rhs_pos)->GetID();
720  bool thread_is_alive = false;
721  const uint32_t num_threads = m_threads.size();
722  for (uint32_t idx = 0; idx < num_threads; ++idx) {
723  ThreadSP backing_thread = m_threads[idx]->GetBackingThread();
724  if (m_threads[idx]->GetID() == tid ||
725  (backing_thread && backing_thread->GetID() == tid)) {
726  thread_is_alive = true;
727  break;
728  }
729  }
730  if (!thread_is_alive)
731  (*rhs_pos)->DestroyThread();
732  }
733  }
734 }
735 
737  std::lock_guard<std::recursive_mutex> guard(GetMutex());
738  collection::iterator pos, end = m_threads.end();
739  for (pos = m_threads.begin(); pos != end; ++pos)
740  (*pos)->Flush();
741 }
742 
743 std::recursive_mutex &ThreadList::GetMutex() const {
744  return m_process->m_thread_mutex;
745 }
746 
748  lldb::ThreadSP thread_sp)
749  : m_thread_list(nullptr), m_tid(LLDB_INVALID_THREAD_ID) {
750  if (thread_sp) {
751  m_tid = thread_sp->GetID();
752  m_thread_list = &thread_sp->GetProcess()->GetThreadList();
753  m_thread_list->PushExpressionExecutionThread(m_tid);
754  }
755 }
Vote ShouldReportRun(Event *event_ptr)
Definition: ThreadList.cpp:410
lldb::ThreadSP FindThreadByIndexID(uint32_t index_id, bool can_update=true)
Definition: ThreadList.cpp:208
ExpressionExecutionThreadPusher(ThreadList &thread_list, lldb::tid_t tid)
Definition: ThreadList.h:49
void UpdateThreadListIfNeeded()
Definition: Process.cpp:1230
const ThreadList & operator=(const ThreadList &rhs)
Definition: ThreadList.cpp:36
void SetStopID(uint32_t stop_id)
Definition: ThreadList.cpp:80
Enumerations for broadcasting.
Definition: SBLaunchInfo.h:14
lldb::ThreadSP GetSelectedThread()
Definition: ThreadList.cpp:649
#define lldbassert(x)
Definition: LLDBAssert.h:15
lldb::ThreadSP FindThreadByProtocolID(lldb::tid_t tid, bool can_update=true)
Definition: ThreadList.cpp:120
bool WillResume()
The thread list asks tells all the threads it is about to resume.
Definition: ThreadList.cpp:485
std::vector< lldb::tid_t > m_expression_tid_stack
Definition: ThreadList.h:151
Vote ShouldReportStop(Event *event_ptr)
Definition: ThreadList.cpp:357
void SetShouldReportStop(Vote vote)
Definition: ThreadList.cpp:399
#define LLDB_LOG(log,...)
Definition: Log.h:209
lldb::tid_t m_selected_tid
For targets that need the notion of a current thread.
Definition: ThreadList.h:150
uint32_t m_stop_id
The process stop ID that this thread list is valid for.
Definition: ThreadList.h:148
std::vector< lldb::ThreadSP > collection
bool StateIsRunningState(lldb::StateType state)
Check if a state represents a state where the process or thread is running.
Definition: State.cpp:68
void PushExpressionExecutionThread(lldb::tid_t tid)
Definition: ThreadList.cpp:69
lldb::ThreadSP GetThreadAtIndex(uint32_t idx, bool can_update=true)
Definition: ThreadList.cpp:90
lldb::ThreadSP FindThreadByID(lldb::tid_t tid, bool can_update=true)
Definition: ThreadList.cpp:102
uint32_t GetStopID() const
Definition: Process.h:1337
virtual bool StopNoticingNewThreads()
Call this to turn off the stop & notice new threads mode.
Definition: Process.h:2216
lldb::ThreadSP GetBackingThread(const lldb::ThreadSP &real_thread)
Definition: ThreadList.cpp:194
Log * GetLogIfAllCategoriesSet(uint32_t mask)
Definition: Logging.cpp:57
Process * m_process
The process that manages this thread list.
Definition: ThreadList.h:146
void Update(ThreadList &rhs)
Definition: ThreadList.cpp:700
uint64_t tid_t
Definition: lldb-types.h:86
uint32_t GetStopID() const
Definition: ThreadList.cpp:78
A plug-in interface definition class for debugging a process.
Definition: Process.h:353
std::recursive_mutex m_thread_mutex
Definition: Process.h:2654
bool GetVerbose() const
Definition: Log.cpp:250
virtual bool StartNoticingNewThreads()
Call this to set the lldb in the mode where it breaks on new thread creations, and then auto-restarts...
Definition: Process.h:2209
bool ShouldStop(Event *event_ptr)
Definition: ThreadList.cpp:225
static bool GetInterruptedFromEvent(const Event *event_ptr)
Definition: Process.cpp:4173
lldb::ThreadSP RemoveThreadByProtocolID(lldb::tid_t tid, bool can_update=true)
Definition: ThreadList.cpp:157
Process or thread is in a suspended state as far as the debugger is concerned while other processes o...
#define LLDB_INVALID_THREAD_ID
Definition: lldb-defines.h:93
void PopExpressionExecutionThread(lldb::tid_t tid)
Definition: ThreadList.cpp:73
void PutCString(const char *cstr)
Definition: Log.cpp:109
Definition: SBAddress.h:15
bool SetSelectedThreadByIndexID(uint32_t index_id, bool notify=false)
Definition: ThreadList.cpp:676
void AddThread(const lldb::ThreadSP &thread_sp)
uint32_t GetSize(bool can_update=true)
Definition: ThreadList.cpp:82
void NotifySelectedThreadChanged(lldb::tid_t tid)
Definition: ThreadList.cpp:691
lldb::ThreadSP GetThreadSPForThreadPtr(Thread *thread_ptr)
Definition: ThreadList.cpp:177
#define LIBLLDB_LOG_STEP
Definition: Logging.h:21
void Printf(const char *format,...) __attribute__((format(printf
Definition: Log.cpp:113
lldb::ThreadSP GetExpressionExecutionThread()
Definition: ThreadList.cpp:59
lldb::ThreadSP RemoveThreadByID(lldb::tid_t tid, bool can_update=true)
Definition: ThreadList.cpp:138
std::recursive_mutex & GetMutex() const override
Definition: ThreadList.cpp:743
bool SetSelectedThreadByID(lldb::tid_t tid, bool notify=false)
Definition: ThreadList.cpp:661