forked from OSchip/llvm-project
918 lines
25 KiB
C++
918 lines
25 KiB
C++
//===-- Thread.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/lldb-private-log.h"
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#include "lldb/Breakpoint/BreakpointLocation.h"
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#include "lldb/Core/Log.h"
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#include "lldb/Core/Stream.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Host/Host.h"
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#include "lldb/Target/DynamicLoader.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/RegisterContext.h"
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#include "lldb/Target/StopInfo.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/Thread.h"
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#include "lldb/Target/ThreadPlan.h"
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#include "lldb/Target/ThreadPlanCallFunction.h"
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#include "lldb/Target/ThreadPlanBase.h"
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#include "lldb/Target/ThreadPlanStepInstruction.h"
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#include "lldb/Target/ThreadPlanStepOut.h"
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#include "lldb/Target/ThreadPlanStepOverBreakpoint.h"
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#include "lldb/Target/ThreadPlanStepThrough.h"
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#include "lldb/Target/ThreadPlanStepInRange.h"
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#include "lldb/Target/ThreadPlanStepOverRange.h"
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#include "lldb/Target/ThreadPlanRunToAddress.h"
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#include "lldb/Target/ThreadPlanStepUntil.h"
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#include "lldb/Target/ThreadSpec.h"
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#include "lldb/Target/Unwind.h"
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using namespace lldb;
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using namespace lldb_private;
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Thread::Thread (Process &process, lldb::tid_t tid) :
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UserID (tid),
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m_process (process),
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m_public_stop_info_sp (),
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m_actual_stop_info_sp (),
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m_index_id (process.GetNextThreadIndexID ()),
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m_reg_context_sp (),
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m_state (eStateUnloaded),
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m_plan_stack (),
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m_immediate_plan_stack(),
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m_completed_plan_stack(),
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m_state_mutex (Mutex::eMutexTypeRecursive),
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m_frames (),
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m_current_frame_idx (0),
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m_resume_signal (LLDB_INVALID_SIGNAL_NUMBER),
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m_resume_state (eStateRunning),
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m_unwinder_ap ()
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{
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Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT);
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if (log)
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log->Printf ("%p Thread::Thread(tid = 0x%4.4x)", this, GetID());
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QueueFundamentalPlan(true);
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}
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Thread::~Thread()
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{
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Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT);
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if (log)
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log->Printf ("%p Thread::~Thread(tid = 0x%4.4x)", this, GetID());
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}
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int
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Thread::GetResumeSignal () const
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{
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return m_resume_signal;
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}
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void
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Thread::SetResumeSignal (int signal)
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{
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m_resume_signal = signal;
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}
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StateType
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Thread::GetResumeState () const
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{
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return m_resume_state;
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}
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void
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Thread::SetResumeState (StateType state)
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{
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m_resume_state = state;
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}
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StopInfo *
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Thread::GetStopInfo ()
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{
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if (m_public_stop_info_sp.get() == NULL)
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{
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ThreadPlanSP plan_sp (GetCompletedPlan());
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if (plan_sp)
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m_public_stop_info_sp = StopInfo::CreateStopReasonWithPlan (plan_sp);
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else
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m_public_stop_info_sp = GetPrivateStopReason ();
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}
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return m_public_stop_info_sp.get();
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}
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bool
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Thread::ThreadStoppedForAReason (void)
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{
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return GetPrivateStopReason () != NULL;
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}
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StateType
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Thread::GetState() const
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{
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// If any other threads access this we will need a mutex for it
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Mutex::Locker locker(m_state_mutex);
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return m_state;
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}
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void
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Thread::SetState(StateType state)
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{
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Mutex::Locker locker(m_state_mutex);
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m_state = state;
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}
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void
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Thread::WillStop()
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{
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ThreadPlan *current_plan = GetCurrentPlan();
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// FIXME: I may decide to disallow threads with no plans. In which
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// case this should go to an assert.
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if (!current_plan)
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return;
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current_plan->WillStop();
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}
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void
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Thread::SetupForResume ()
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{
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if (GetResumeState() != eStateSuspended)
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{
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// If we're at a breakpoint push the step-over breakpoint plan. Do this before
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// telling the current plan it will resume, since we might change what the current
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// plan is.
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lldb::addr_t pc = GetRegisterContext()->GetPC();
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BreakpointSiteSP bp_site_sp = GetProcess().GetBreakpointSiteList().FindByAddress(pc);
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if (bp_site_sp && bp_site_sp->IsEnabled())
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{
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// Note, don't assume there's a ThreadPlanStepOverBreakpoint, the target may not require anything
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// special to step over a breakpoint.
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ThreadPlan *cur_plan = GetCurrentPlan();
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if (cur_plan->GetKind() != ThreadPlan::eKindStepOverBreakpoint)
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{
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ThreadPlanStepOverBreakpoint *step_bp_plan = new ThreadPlanStepOverBreakpoint (*this);
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if (step_bp_plan)
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{
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ThreadPlanSP step_bp_plan_sp;
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step_bp_plan->SetPrivate (true);
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if (GetCurrentPlan()->RunState() != eStateStepping)
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{
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step_bp_plan->SetAutoContinue(true);
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}
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step_bp_plan_sp.reset (step_bp_plan);
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QueueThreadPlan (step_bp_plan_sp, false);
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}
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}
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}
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}
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}
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bool
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Thread::WillResume (StateType resume_state)
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{
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// At this point clear the completed plan stack.
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m_completed_plan_stack.clear();
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m_discarded_plan_stack.clear();
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StopInfo *stop_info = GetPrivateStopReason().get();
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if (stop_info)
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stop_info->WillResume (resume_state);
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// Tell all the plans that we are about to resume in case they need to clear any state.
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// We distinguish between the plan on the top of the stack and the lower
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// plans in case a plan needs to do any special business before it runs.
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ThreadPlan *plan_ptr = GetCurrentPlan();
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plan_ptr->WillResume(resume_state, true);
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while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL)
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{
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plan_ptr->WillResume (resume_state, false);
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}
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m_public_stop_info_sp.reset();
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m_actual_stop_info_sp.reset();
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return true;
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}
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void
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Thread::DidResume ()
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{
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SetResumeSignal (LLDB_INVALID_SIGNAL_NUMBER);
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}
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bool
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Thread::ShouldStop (Event* event_ptr)
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{
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ThreadPlan *current_plan = GetCurrentPlan();
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bool should_stop = true;
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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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StreamString s;
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DumpThreadPlans(&s);
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log->PutCString (s.GetData());
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}
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if (current_plan->PlanExplainsStop())
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{
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bool over_ride_stop = current_plan->ShouldAutoContinue(event_ptr);
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while (1)
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{
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should_stop = current_plan->ShouldStop(event_ptr);
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if (current_plan->MischiefManaged())
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{
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if (should_stop)
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current_plan->WillStop();
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// If a Master Plan wants to stop, and wants to stick on the stack, we let it.
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// Otherwise, see if the plan's parent wants to stop.
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if (should_stop && current_plan->IsMasterPlan() && !current_plan->OkayToDiscard())
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{
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PopPlan();
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break;
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}
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else
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{
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PopPlan();
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current_plan = GetCurrentPlan();
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if (current_plan == NULL)
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{
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break;
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}
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}
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}
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else
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{
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break;
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}
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}
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if (over_ride_stop)
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should_stop = false;
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}
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else
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{
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// If the current plan doesn't explain the stop, then, find one that
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// does and let it handle the situation.
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ThreadPlan *plan_ptr = current_plan;
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while ((plan_ptr = GetPreviousPlan(plan_ptr)) != NULL)
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{
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if (plan_ptr->PlanExplainsStop())
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{
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should_stop = plan_ptr->ShouldStop (event_ptr);
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break;
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}
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}
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}
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return should_stop;
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}
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Vote
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Thread::ShouldReportStop (Event* event_ptr)
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{
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StateType thread_state = GetResumeState ();
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if (thread_state == eStateSuspended
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|| thread_state == eStateInvalid)
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return eVoteNoOpinion;
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if (m_completed_plan_stack.size() > 0)
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{
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// Don't use GetCompletedPlan here, since that suppresses private plans.
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return m_completed_plan_stack.back()->ShouldReportStop (event_ptr);
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}
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else
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return GetCurrentPlan()->ShouldReportStop (event_ptr);
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}
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Vote
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Thread::ShouldReportRun (Event* event_ptr)
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{
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StateType thread_state = GetResumeState ();
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if (thread_state == eStateSuspended
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|| thread_state == eStateInvalid)
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return eVoteNoOpinion;
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if (m_completed_plan_stack.size() > 0)
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{
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// Don't use GetCompletedPlan here, since that suppresses private plans.
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return m_completed_plan_stack.back()->ShouldReportRun (event_ptr);
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}
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else
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return GetCurrentPlan()->ShouldReportRun (event_ptr);
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}
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bool
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Thread::MatchesSpec (const ThreadSpec *spec)
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{
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if (spec == NULL)
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return true;
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return spec->ThreadPassesBasicTests(this);
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}
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void
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Thread::PushPlan (ThreadPlanSP &thread_plan_sp)
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{
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if (thread_plan_sp)
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{
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if (thread_plan_sp->IsImmediate())
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m_immediate_plan_stack.push_back (thread_plan_sp);
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else
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m_plan_stack.push_back (thread_plan_sp);
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thread_plan_sp->DidPush();
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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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StreamString s;
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thread_plan_sp->GetDescription (&s, lldb::eDescriptionLevelFull);
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log->Printf("Pushing plan: \"%s\" for thread: %d immediate: %s.",
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s.GetData(),
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thread_plan_sp->GetThread().GetID(),
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thread_plan_sp->IsImmediate() ? "true" : "false");
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}
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}
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}
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void
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Thread::PopPlan ()
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{
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Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
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if (!m_immediate_plan_stack.empty())
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{
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ThreadPlanSP &plan = m_immediate_plan_stack.back();
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if (log)
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{
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log->Printf("Popping plan: \"%s\" for thread: %d immediate: true.", plan->GetName(), plan->GetThread().GetID());
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}
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plan->WillPop();
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m_immediate_plan_stack.pop_back();
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}
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else if (m_plan_stack.empty())
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return;
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else
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{
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ThreadPlanSP &plan = m_plan_stack.back();
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if (log)
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{
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log->Printf("Popping plan: \"%s\" for thread: 0x%x immediate: false.", plan->GetName(), plan->GetThread().GetID());
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}
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m_completed_plan_stack.push_back (plan);
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plan->WillPop();
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m_plan_stack.pop_back();
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}
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}
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void
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Thread::DiscardPlan ()
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{
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if (m_plan_stack.size() > 1)
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{
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ThreadPlanSP &plan = m_plan_stack.back();
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m_discarded_plan_stack.push_back (plan);
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plan->WillPop();
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m_plan_stack.pop_back();
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}
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}
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ThreadPlan *
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Thread::GetCurrentPlan ()
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{
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if (!m_immediate_plan_stack.empty())
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return m_immediate_plan_stack.back().get();
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else if (m_plan_stack.empty())
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return NULL;
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else
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return m_plan_stack.back().get();
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}
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ThreadPlanSP
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Thread::GetCompletedPlan ()
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{
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ThreadPlanSP empty_plan_sp;
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if (!m_completed_plan_stack.empty())
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{
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for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--)
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{
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ThreadPlanSP completed_plan_sp;
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completed_plan_sp = m_completed_plan_stack[i];
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if (!completed_plan_sp->GetPrivate ())
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return completed_plan_sp;
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}
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}
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return empty_plan_sp;
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}
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bool
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Thread::IsThreadPlanDone (ThreadPlan *plan)
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{
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ThreadPlanSP empty_plan_sp;
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if (!m_completed_plan_stack.empty())
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{
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for (int i = m_completed_plan_stack.size() - 1; i >= 0; i--)
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{
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if (m_completed_plan_stack[i].get() == plan)
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return true;
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}
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}
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return false;
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}
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bool
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Thread::WasThreadPlanDiscarded (ThreadPlan *plan)
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{
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ThreadPlanSP empty_plan_sp;
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if (!m_discarded_plan_stack.empty())
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{
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for (int i = m_discarded_plan_stack.size() - 1; i >= 0; i--)
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{
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if (m_discarded_plan_stack[i].get() == plan)
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return true;
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}
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}
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return false;
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}
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ThreadPlan *
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Thread::GetPreviousPlan (ThreadPlan *current_plan)
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{
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if (current_plan == NULL)
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return NULL;
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int stack_size = m_completed_plan_stack.size();
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for (int i = stack_size - 1; i > 0; i--)
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{
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if (current_plan == m_completed_plan_stack[i].get())
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return m_completed_plan_stack[i-1].get();
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}
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if (stack_size > 0 && m_completed_plan_stack[0].get() == current_plan)
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{
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if (m_immediate_plan_stack.size() > 0)
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return m_immediate_plan_stack.back().get();
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else if (m_plan_stack.size() > 0)
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return m_plan_stack.back().get();
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else
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return NULL;
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}
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stack_size = m_immediate_plan_stack.size();
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for (int i = stack_size - 1; i > 0; i--)
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{
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if (current_plan == m_immediate_plan_stack[i].get())
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return m_immediate_plan_stack[i-1].get();
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}
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if (stack_size > 0 && m_immediate_plan_stack[0].get() == current_plan)
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{
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if (m_plan_stack.size() > 0)
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return m_plan_stack.back().get();
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else
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return NULL;
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}
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stack_size = m_plan_stack.size();
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for (int i = stack_size - 1; i > 0; i--)
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{
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if (current_plan == m_plan_stack[i].get())
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return m_plan_stack[i-1].get();
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}
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return NULL;
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}
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void
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Thread::QueueThreadPlan (ThreadPlanSP &thread_plan_sp, bool abort_other_plans)
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{
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if (abort_other_plans)
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DiscardThreadPlans(true);
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PushPlan (thread_plan_sp);
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}
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void
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Thread::DiscardThreadPlans(bool force)
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{
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// FIXME: It is not always safe to just discard plans. Some, like the step over
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// breakpoint trap can't be discarded in general (though you can if you plan to
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// force a return from a function, for instance.
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// For now I'm just not clearing immediate plans, but I need a way for plans to
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// say they really need to be kept on, and then a way to override that. Humm...
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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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log->Printf("Discarding thread plans for thread: 0x%x: force %d.", GetID(), force);
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}
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if (force)
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{
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int stack_size = m_plan_stack.size();
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for (int i = stack_size - 1; i > 0; i--)
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{
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DiscardPlan();
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}
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return;
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}
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while (1)
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{
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int master_plan_idx;
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bool discard;
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|
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// Find the first master plan, see if it wants discarding, and if yes discard up to it.
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for (master_plan_idx = m_plan_stack.size() - 1; master_plan_idx >= 0; master_plan_idx--)
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{
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if (m_plan_stack[master_plan_idx]->IsMasterPlan())
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{
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discard = m_plan_stack[master_plan_idx]->OkayToDiscard();
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|
break;
|
|
}
|
|
}
|
|
|
|
if (discard)
|
|
{
|
|
// First pop all the dependent plans:
|
|
for (int i = m_plan_stack.size() - 1; i > master_plan_idx; i--)
|
|
{
|
|
|
|
// FIXME: Do we need a finalize here, or is the rule that "PrepareForStop"
|
|
// for the plan leaves it in a state that it is safe to pop the plan
|
|
// with no more notice?
|
|
DiscardPlan();
|
|
}
|
|
|
|
// Now discard the master plan itself.
|
|
// The bottom-most plan never gets discarded. "OkayToDiscard" for it means
|
|
// discard it's dependent plans, but not it...
|
|
if (master_plan_idx > 0)
|
|
{
|
|
DiscardPlan();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// If the master plan doesn't want to get discarded, then we're done.
|
|
break;
|
|
}
|
|
|
|
}
|
|
// FIXME: What should we do about the immediate plans?
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueFundamentalPlan (bool abort_other_plans)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanBase(*this));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForStepSingleInstruction (bool step_over, bool abort_other_plans, bool stop_other_threads)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanStepInstruction (*this, step_over, stop_other_threads, eVoteNoOpinion, eVoteNoOpinion));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForStepRange
|
|
(
|
|
bool abort_other_plans,
|
|
StepType type,
|
|
const AddressRange &range,
|
|
const SymbolContext &addr_context,
|
|
lldb::RunMode stop_other_threads,
|
|
bool avoid_code_without_debug_info
|
|
)
|
|
{
|
|
ThreadPlanSP thread_plan_sp;
|
|
if (type == eStepTypeInto)
|
|
{
|
|
ThreadPlanStepInRange *plan = new ThreadPlanStepInRange (*this, range, addr_context, stop_other_threads);
|
|
if (avoid_code_without_debug_info)
|
|
plan->GetFlags().Set (ThreadPlanShouldStopHere::eAvoidNoDebug);
|
|
else
|
|
plan->GetFlags().Clear (ThreadPlanShouldStopHere::eAvoidNoDebug);
|
|
thread_plan_sp.reset (plan);
|
|
}
|
|
else
|
|
thread_plan_sp.reset (new ThreadPlanStepOverRange (*this, range, addr_context, stop_other_threads));
|
|
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForStepOverBreakpointPlan (bool abort_other_plans)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanStepOverBreakpoint (*this));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForStepOut (bool abort_other_plans, SymbolContext *addr_context, bool first_insn,
|
|
bool stop_other_threads, Vote stop_vote, Vote run_vote)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanStepOut (*this, addr_context, first_insn, stop_other_threads, stop_vote, run_vote));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForStepThrough (bool abort_other_plans, bool stop_other_threads)
|
|
{
|
|
ThreadPlanSP thread_plan_sp(GetProcess().GetDynamicLoader()->GetStepThroughTrampolinePlan (*this, stop_other_threads));
|
|
if (thread_plan_sp.get() == NULL)
|
|
{
|
|
thread_plan_sp.reset(new ThreadPlanStepThrough (*this, stop_other_threads));
|
|
if (thread_plan_sp && !thread_plan_sp->ValidatePlan (NULL))
|
|
return NULL;
|
|
}
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForCallFunction (bool abort_other_plans,
|
|
Address& function,
|
|
lldb::addr_t arg,
|
|
bool stop_other_threads,
|
|
bool discard_on_error)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanCallFunction (*this, function, arg, stop_other_threads, discard_on_error));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForCallFunction (bool abort_other_plans,
|
|
Address& function,
|
|
ValueList &args,
|
|
bool stop_other_threads,
|
|
bool discard_on_error)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanCallFunction (*this, function, args, stop_other_threads, discard_on_error));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForRunToAddress (bool abort_other_plans,
|
|
Address &target_addr,
|
|
bool stop_other_threads)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanRunToAddress (*this, target_addr, stop_other_threads));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
}
|
|
|
|
ThreadPlan *
|
|
Thread::QueueThreadPlanForStepUntil (bool abort_other_plans,
|
|
lldb::addr_t *address_list,
|
|
size_t num_addresses,
|
|
bool stop_other_threads)
|
|
{
|
|
ThreadPlanSP thread_plan_sp (new ThreadPlanStepUntil (*this, address_list, num_addresses, stop_other_threads));
|
|
QueueThreadPlan (thread_plan_sp, abort_other_plans);
|
|
return thread_plan_sp.get();
|
|
|
|
}
|
|
|
|
uint32_t
|
|
Thread::GetIndexID () const
|
|
{
|
|
return m_index_id;
|
|
}
|
|
|
|
void
|
|
Thread::DumpThreadPlans (lldb_private::Stream *s) const
|
|
{
|
|
uint32_t stack_size = m_plan_stack.size();
|
|
s->Printf ("Plan Stack for thread #%u: tid = 0x%4.4x - %d elements.\n", GetIndexID(), GetID(), stack_size);
|
|
for (int i = stack_size - 1; i > 0; i--)
|
|
{
|
|
s->Printf ("Element %d: ", i);
|
|
s->IndentMore();
|
|
m_plan_stack[i]->GetDescription (s, eDescriptionLevelFull);
|
|
s->IndentLess();
|
|
s->EOL();
|
|
}
|
|
|
|
stack_size = m_immediate_plan_stack.size();
|
|
s->Printf ("Immediate Plan Stack: %d elements.\n", stack_size);
|
|
for (int i = stack_size - 1; i > 0; i--)
|
|
{
|
|
s->Printf ("Element %d: ", i);
|
|
s->IndentMore();
|
|
m_immediate_plan_stack[i]->GetDescription (s, eDescriptionLevelFull);
|
|
s->IndentLess();
|
|
s->EOL();
|
|
}
|
|
|
|
stack_size = m_completed_plan_stack.size();
|
|
s->Printf ("Completed Plan Stack: %d elements.\n", stack_size);
|
|
for (int i = stack_size - 1; i > 0; i--)
|
|
{
|
|
s->Printf ("Element %d: ", i);
|
|
s->IndentMore();
|
|
m_completed_plan_stack[i]->GetDescription (s, eDescriptionLevelFull);
|
|
s->IndentLess();
|
|
s->EOL();
|
|
}
|
|
|
|
stack_size = m_discarded_plan_stack.size();
|
|
s->Printf ("Discarded Plan Stack: %d elements.\n", stack_size);
|
|
for (int i = stack_size - 1; i > 0; i--)
|
|
{
|
|
s->Printf ("Element %d: ", i);
|
|
s->IndentMore();
|
|
m_discarded_plan_stack[i]->GetDescription (s, eDescriptionLevelFull);
|
|
s->IndentLess();
|
|
s->EOL();
|
|
}
|
|
|
|
}
|
|
|
|
Target *
|
|
Thread::CalculateTarget ()
|
|
{
|
|
return m_process.CalculateTarget();
|
|
}
|
|
|
|
Process *
|
|
Thread::CalculateProcess ()
|
|
{
|
|
return &m_process;
|
|
}
|
|
|
|
Thread *
|
|
Thread::CalculateThread ()
|
|
{
|
|
return this;
|
|
}
|
|
|
|
StackFrame *
|
|
Thread::CalculateStackFrame ()
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
Thread::Calculate (ExecutionContext &exe_ctx)
|
|
{
|
|
m_process.Calculate (exe_ctx);
|
|
exe_ctx.thread = this;
|
|
exe_ctx.frame = NULL;
|
|
}
|
|
|
|
uint32_t
|
|
Thread::GetStackFrameCount()
|
|
{
|
|
Unwind *unwinder = GetUnwinder ();
|
|
if (unwinder)
|
|
return unwinder->GetFrameCount();
|
|
return 0;
|
|
}
|
|
|
|
lldb::StackFrameSP
|
|
Thread::GetStackFrameAtIndex (uint32_t idx)
|
|
{
|
|
|
|
StackFrameSP frame_sp (m_frames.GetFrameAtIndex(idx));
|
|
|
|
if (frame_sp.get())
|
|
return frame_sp;
|
|
|
|
// Don't try and fetch a frame while process is running
|
|
// FIXME: This check isn't right because IsRunning checks the Public state, but this
|
|
// is work you need to do - for instance in ShouldStop & friends - before the public
|
|
// state has been changed.
|
|
// if (m_process.IsRunning())
|
|
// return frame_sp;
|
|
|
|
// Special case the first frame (idx == 0) so that we don't need to
|
|
// know how many stack frames there are to get it. If we need any other
|
|
// frames, then we do need to know if "idx" is a valid index.
|
|
if (idx == 0)
|
|
{
|
|
// If this is the first frame, we want to share the thread register
|
|
// context with the stack frame at index zero.
|
|
GetRegisterContext();
|
|
assert (m_reg_context_sp.get());
|
|
frame_sp.reset (new StackFrame (idx, *this, m_reg_context_sp, m_reg_context_sp->GetSP(), m_reg_context_sp->GetPC()));
|
|
}
|
|
else if (idx < GetStackFrameCount())
|
|
{
|
|
Unwind *unwinder = GetUnwinder ();
|
|
if (unwinder)
|
|
{
|
|
addr_t pc, cfa;
|
|
if (unwinder->GetFrameInfoAtIndex(idx, cfa, pc))
|
|
frame_sp.reset (new StackFrame (idx, *this, cfa, pc));
|
|
}
|
|
}
|
|
m_frames.SetFrameAtIndex(idx, frame_sp);
|
|
return frame_sp;
|
|
}
|
|
|
|
lldb::StackFrameSP
|
|
Thread::GetCurrentFrame ()
|
|
{
|
|
return GetStackFrameAtIndex (m_frames.GetCurrentFrameIndex());
|
|
}
|
|
|
|
uint32_t
|
|
Thread::SetCurrentFrame (lldb_private::StackFrame *frame)
|
|
{
|
|
return m_frames.SetCurrentFrame(frame);
|
|
}
|
|
|
|
void
|
|
Thread::SetCurrentFrameByIndex (uint32_t frame_idx)
|
|
{
|
|
m_frames.SetCurrentFrameByIndex(frame_idx);
|
|
}
|
|
|
|
void
|
|
Thread::DumpInfo
|
|
(
|
|
Stream &strm,
|
|
bool show_stop_reason,
|
|
bool show_name,
|
|
bool show_queue,
|
|
uint32_t frame_idx
|
|
)
|
|
{
|
|
strm.Printf("thread #%u: tid = 0x%4.4x", GetIndexID(), GetID());
|
|
|
|
if (frame_idx != LLDB_INVALID_INDEX32)
|
|
{
|
|
StackFrameSP frame_sp(GetStackFrameAtIndex (frame_idx));
|
|
if (frame_sp)
|
|
{
|
|
strm.PutCString(", ");
|
|
frame_sp->Dump (&strm, false);
|
|
}
|
|
}
|
|
|
|
if (show_stop_reason)
|
|
{
|
|
StopInfo *stop_info = GetStopInfo();
|
|
|
|
if (stop_info)
|
|
{
|
|
const char *stop_description = stop_info->GetDescription();
|
|
if (stop_description)
|
|
strm.Printf (", stop reason = %s", stop_description);
|
|
}
|
|
}
|
|
|
|
if (show_name)
|
|
{
|
|
const char *name = GetName();
|
|
if (name && name[0])
|
|
strm.Printf(", name = %s", name);
|
|
}
|
|
|
|
if (show_queue)
|
|
{
|
|
const char *queue = GetQueueName();
|
|
if (queue && queue[0])
|
|
strm.Printf(", queue = %s", queue);
|
|
}
|
|
}
|
|
|
|
lldb::ThreadSP
|
|
Thread::GetSP ()
|
|
{
|
|
return m_process.GetThreadList().GetThreadSPForThreadPtr(this);
|
|
}
|