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//===-- ThreadPlanBase.cpp --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Target/ThreadPlanBase.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
//
#include "lldb/Breakpoint/StoppointCallbackContext.h"
#include "lldb/Breakpoint/BreakpointSite.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Breakpoint/Breakpoint.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Stream.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StopInfo.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// ThreadPlanBase: This one always stops, and never has anything particular
// to do.
// FIXME: The "signal handling" policies should probably go here.
//----------------------------------------------------------------------
ThreadPlanBase::ThreadPlanBase (Thread &thread) :
ThreadPlan(ThreadPlan::eKindBase, "base plan", thread, eVoteYes, eVoteNoOpinion)
{
// Set the tracer to a default tracer.
// FIXME: need to add a thread settings variable to pix various tracers...
#define THREAD_PLAN_USE_ASSEMBLY_TRACER 1
#ifdef THREAD_PLAN_USE_ASSEMBLY_TRACER
ThreadPlanTracerSP new_tracer_sp (new ThreadPlanAssemblyTracer (m_thread));
#else
ThreadPlanTracerSP new_tracer_sp (new ThreadPlanTracer (m_thread));
#endif
new_tracer_sp->EnableTracing (m_thread.GetTraceEnabledState());
SetThreadPlanTracer(new_tracer_sp);
SetIsMasterPlan (true);
}
ThreadPlanBase::~ThreadPlanBase ()
{
}
void
ThreadPlanBase::GetDescription (Stream *s, lldb::DescriptionLevel level)
{
s->Printf ("Base thread plan.");
}
bool
ThreadPlanBase::ValidatePlan (Stream *error)
{
return true;
}
bool
ThreadPlanBase::PlanExplainsStop ()
{
// The base plan should defer to its tracer, since by default it
// always handles the stop.
if (TracerExplainsStop())
return false;
else
return true;
}
bool
ThreadPlanBase::ShouldStop (Event *event_ptr)
{
m_stop_vote = eVoteYes;
m_run_vote = eVoteYes;
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
StopInfoSP stop_info_sp = GetPrivateStopReason();
if (stop_info_sp)
{
StopReason reason = stop_info_sp->GetStopReason();
switch (reason)
{
case eStopReasonInvalid:
case eStopReasonNone:
// This
m_run_vote = eVoteNoOpinion;
m_stop_vote = eVoteNo;
return false;
case eStopReasonBreakpoint:
case eStopReasonWatchpoint:
if (stop_info_sp->ShouldStop(event_ptr))
{
// If we are going to stop for a breakpoint, then unship the other plans
// at this point. Don't force the discard, however, so Master plans can stay
// in place if they want to.
if (log)
log->Printf("Base plan discarding thread plans for thread tid = 0x%4.4" PRIx64 " (breakpoint hit.)", m_thread.GetID());
m_thread.DiscardThreadPlans(false);
return true;
}
// If we aren't going to stop at this breakpoint, and it is internal,
// don't report this stop or the subsequent running event.
// Otherwise we will post the stopped & running, but the stopped event will get marked
// with "restarted" so the UI will know to wait and expect the consequent "running".
if (stop_info_sp->ShouldNotify (event_ptr))
{
m_stop_vote = eVoteYes;
m_run_vote = eVoteYes;
}
else
{
m_stop_vote = eVoteNo;
m_run_vote = eVoteNo;
}
return false;
// TODO: the break below was missing, was this intentional??? If so
// please mention it
break;
case eStopReasonException:
// If we crashed, discard thread plans and stop. Don't force the discard, however,
// since on rerun the target may clean up this exception and continue normally from there.
if (log)
log->Printf("Base plan discarding thread plans for thread tid = 0x%4.4" PRIx64 " (exception.)", m_thread.GetID());
m_thread.DiscardThreadPlans(false);
return true;
case eStopReasonSignal:
if (stop_info_sp->ShouldStop(event_ptr))
{
if (log)
log->Printf("Base plan discarding thread plans for thread tid = 0x%4.4" PRIx64 " (signal.)", m_thread.GetID());
m_thread.DiscardThreadPlans(false);
return true;
}
else
{
// We're not going to stop, but while we are here, let's figure out
// whether to report this.
if (stop_info_sp->ShouldNotify(event_ptr))
m_stop_vote = eVoteYes;
else
m_stop_vote = eVoteNo;
}
return false;
default:
return true;
}
}
else
{
m_run_vote = eVoteNoOpinion;
m_stop_vote = eVoteNo;
}
// If there's no explicit reason to stop, then we will continue.
return false;
}
bool
ThreadPlanBase::StopOthers ()
{
return false;
}
StateType
ThreadPlanBase::GetPlanRunState ()
{
return eStateRunning;
}
bool
ThreadPlanBase::WillStop ()
{
return true;
}
bool
ThreadPlanBase::WillResume (lldb::StateType resume_state, bool current_plan)
{
// Reset these to the default values so we don't set them wrong, then not get asked
// for a while, then return the wrong answer.
m_run_vote = eVoteNoOpinion;
m_stop_vote = eVoteNo;
return true;
}
// The base plan is never done.
bool
ThreadPlanBase::MischiefManaged ()
{
// The base plan is never done.
return false;
}
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