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9b03fa0c69
but that wasn't added to the list of reasons they don't explain. That would mean we keep stepping after hitting the AsanDie breakpoint rather than stopping when the Asan event occurred. <rdar://problem/21925479> llvm-svn: 243035
367 lines
10 KiB
C++
367 lines
10 KiB
C++
//===-- ThreadPlan.cpp ------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Target/ThreadPlan.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Core/Debugger.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/State.h"
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#include "lldb/Target/RegisterContext.h"
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#include "lldb/Target/Thread.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/ConvertEnum.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// ThreadPlan constructor
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//----------------------------------------------------------------------
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ThreadPlan::ThreadPlan(ThreadPlanKind kind, const char *name, Thread &thread, Vote stop_vote, Vote run_vote) :
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m_thread (thread),
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m_stop_vote (stop_vote),
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m_run_vote (run_vote),
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m_kind (kind),
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m_name (name),
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m_plan_complete_mutex (Mutex::eMutexTypeRecursive),
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m_cached_plan_explains_stop (eLazyBoolCalculate),
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m_plan_complete (false),
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m_plan_private (false),
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m_okay_to_discard (true),
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m_is_master_plan (false),
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m_plan_succeeded(true)
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{
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SetID (GetNextID());
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}
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//----------------------------------------------------------------------
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// Destructor
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//----------------------------------------------------------------------
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ThreadPlan::~ThreadPlan()
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{
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}
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bool
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ThreadPlan::PlanExplainsStop (Event *event_ptr)
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{
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if (m_cached_plan_explains_stop == eLazyBoolCalculate)
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{
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bool actual_value = DoPlanExplainsStop(event_ptr);
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m_cached_plan_explains_stop = actual_value ? eLazyBoolYes : eLazyBoolNo;
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return actual_value;
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}
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else
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{
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return m_cached_plan_explains_stop == eLazyBoolYes;
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}
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}
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bool
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ThreadPlan::IsPlanComplete ()
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{
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Mutex::Locker locker(m_plan_complete_mutex);
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return m_plan_complete;
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}
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void
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ThreadPlan::SetPlanComplete (bool success)
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{
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Mutex::Locker locker(m_plan_complete_mutex);
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m_plan_complete = true;
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m_plan_succeeded = success;
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}
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bool
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ThreadPlan::MischiefManaged ()
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{
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Mutex::Locker locker(m_plan_complete_mutex);
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// Mark the plan is complete, but don't override the success flag.
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m_plan_complete = true;
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return true;
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}
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Vote
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ThreadPlan::ShouldReportStop (Event *event_ptr)
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{
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
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if (m_stop_vote == eVoteNoOpinion)
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{
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ThreadPlan *prev_plan = GetPreviousPlan ();
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if (prev_plan)
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{
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Vote prev_vote = prev_plan->ShouldReportStop (event_ptr);
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if (log)
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log->Printf ("ThreadPlan::ShouldReportStop() returning previous thread plan vote: %s",
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GetVoteAsCString (prev_vote));
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return prev_vote;
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}
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}
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if (log)
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log->Printf ("ThreadPlan::ShouldReportStop() returning vote: %s", GetVoteAsCString (m_stop_vote));
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return m_stop_vote;
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}
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Vote
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ThreadPlan::ShouldReportRun (Event *event_ptr)
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{
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if (m_run_vote == eVoteNoOpinion)
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{
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ThreadPlan *prev_plan = GetPreviousPlan ();
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if (prev_plan)
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return prev_plan->ShouldReportRun (event_ptr);
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}
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return m_run_vote;
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}
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bool
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ThreadPlan::StopOthers ()
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{
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ThreadPlan *prev_plan;
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prev_plan = GetPreviousPlan ();
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if (prev_plan == NULL)
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return false;
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else
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return prev_plan->StopOthers();
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}
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void
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ThreadPlan::SetStopOthers (bool new_value)
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{
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// SetStopOthers doesn't work up the hierarchy. You have to set the
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// explicit ThreadPlan you want to affect.
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}
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bool
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ThreadPlan::WillResume (StateType resume_state, bool current_plan)
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{
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m_cached_plan_explains_stop = eLazyBoolCalculate;
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if (current_plan)
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{
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
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if (log)
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{
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RegisterContext *reg_ctx = m_thread.GetRegisterContext().get();
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assert (reg_ctx);
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addr_t pc = reg_ctx->GetPC();
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addr_t sp = reg_ctx->GetSP();
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addr_t fp = reg_ctx->GetFP();
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log->Printf("%s Thread #%u (0x%p): tid = 0x%4.4" PRIx64 ", pc = 0x%8.8" PRIx64 ", sp = 0x%8.8" PRIx64 ", fp = 0x%8.8" PRIx64 ", "
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"plan = '%s', state = %s, stop others = %d",
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__FUNCTION__, m_thread.GetIndexID(),
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static_cast<void*>(&m_thread), m_thread.GetID(),
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static_cast<uint64_t>(pc), static_cast<uint64_t>(sp),
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static_cast<uint64_t>(fp), m_name.c_str(),
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StateAsCString(resume_state), StopOthers());
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}
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}
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return DoWillResume (resume_state, current_plan);
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}
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lldb::user_id_t
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ThreadPlan::GetNextID()
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{
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static uint32_t g_nextPlanID = 0;
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return ++g_nextPlanID;
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}
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void
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ThreadPlan::DidPush()
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{
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}
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void
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ThreadPlan::WillPop()
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{
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}
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bool
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ThreadPlan::OkayToDiscard()
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{
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if (!IsMasterPlan())
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return true;
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else
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return m_okay_to_discard;
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}
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lldb::StateType
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ThreadPlan::RunState ()
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{
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if (m_tracer_sp && m_tracer_sp->TracingEnabled() && m_tracer_sp->SingleStepEnabled())
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return eStateStepping;
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else
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return GetPlanRunState();
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}
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bool
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ThreadPlan::IsUsuallyUnexplainedStopReason(lldb::StopReason reason)
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{
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switch (reason)
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{
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case eStopReasonWatchpoint:
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case eStopReasonSignal:
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case eStopReasonException:
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case eStopReasonExec:
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case eStopReasonThreadExiting:
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case eStopReasonInstrumentation:
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return true;
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default:
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return false;
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}
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}
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//----------------------------------------------------------------------
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// ThreadPlanNull
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//----------------------------------------------------------------------
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ThreadPlanNull::ThreadPlanNull (Thread &thread) :
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ThreadPlan (ThreadPlan::eKindNull,
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"Null Thread Plan",
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thread,
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eVoteNoOpinion,
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eVoteNoOpinion)
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{
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}
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ThreadPlanNull::~ThreadPlanNull ()
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{
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}
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void
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ThreadPlanNull::GetDescription (Stream *s,
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lldb::DescriptionLevel level)
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{
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s->PutCString("Null thread plan - thread has been destroyed.");
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}
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bool
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ThreadPlanNull::ValidatePlan (Stream *error)
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{
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#ifdef LLDB_CONFIGURATION_DEBUG
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fprintf(stderr, "error: %s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#else
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_THREAD));
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if (log)
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log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#endif
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return true;
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}
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bool
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ThreadPlanNull::ShouldStop (Event *event_ptr)
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{
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#ifdef LLDB_CONFIGURATION_DEBUG
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fprintf(stderr, "error: %s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#else
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_THREAD));
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if (log)
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log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#endif
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return true;
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}
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bool
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ThreadPlanNull::WillStop ()
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{
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#ifdef LLDB_CONFIGURATION_DEBUG
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fprintf(stderr, "error: %s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#else
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_THREAD));
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if (log)
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log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#endif
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return true;
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}
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bool
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ThreadPlanNull::DoPlanExplainsStop (Event *event_ptr)
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{
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#ifdef LLDB_CONFIGURATION_DEBUG
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fprintf(stderr, "error: %s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#else
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_THREAD));
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if (log)
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log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#endif
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return true;
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}
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// The null plan is never done.
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bool
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ThreadPlanNull::MischiefManaged ()
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{
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// The null plan is never done.
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#ifdef LLDB_CONFIGURATION_DEBUG
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fprintf(stderr, "error: %s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#else
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_THREAD));
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if (log)
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log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#endif
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return false;
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}
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lldb::StateType
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ThreadPlanNull::GetPlanRunState ()
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{
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// Not sure what to return here. This is a dead thread.
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#ifdef LLDB_CONFIGURATION_DEBUG
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fprintf(stderr, "error: %s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#else
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Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_THREAD));
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if (log)
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log->Error("%s called on thread that has been destroyed (tid = 0x%" PRIx64 ", ptid = 0x%" PRIx64 ")",
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__PRETTY_FUNCTION__,
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m_thread.GetID(),
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m_thread.GetProtocolID());
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#endif
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return eStateRunning;
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}
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