6e0ff1a3cb
namespace lldb_private {
class Thread
{
virtual lldb::StopInfoSP
GetPrivateStopReason() = 0;
};
}
To not be virtual. The lldb_private::Thread now handles the correct caching and will call a new pure virtual function:
namespace lldb_private {
class Thread
{
virtual bool
CalculateStopInfo() = 0;
}
}
This function must be overridden by thead lldb_private::Thread subclass and the only thing it needs to do is to set the Thread::StopInfo() with the current stop reason and return true, or return false if there is no stop reason. The lldb_private::Thread class will take care of calling this function only when it is required. This allows lldb_private::Thread subclasses to be a bit simpler and not all need to duplicate the cache and invalidation settings.
Also renamed:
lldb::StopInfoSP
lldb_private::Thread::GetPrivateStopReason();
To:
lldb::StopInfoSP
lldb_private::Thread::GetPrivateStopInfo();
Also cleaned up a case where the ThreadPlanStepOverBreakpoint might not re-set its breakpoint if the thread disappears (which was happening due to a bug when using the OperatingSystem plug-ins with memory threads and real threads).
llvm-svn: 181501
141 lines
3.4 KiB
C++
141 lines
3.4 KiB
C++
//===-- ThreadMemory.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 "Plugins/Process/Utility/ThreadMemory.h"
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#include "lldb/Target/OperatingSystem.h"
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#include "lldb/Target/RegisterContext.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/StopInfo.h"
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#include "lldb/Target/Unwind.h"
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#include "Plugins/Process/Utility/RegisterContextThreadMemory.h"
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using namespace lldb;
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using namespace lldb_private;
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ThreadMemory::ThreadMemory (Process &process,
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tid_t tid,
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const ValueObjectSP &thread_info_valobj_sp) :
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Thread (process, tid),
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m_backing_thread_sp (),
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m_thread_info_valobj_sp (thread_info_valobj_sp),
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m_name(),
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m_queue()
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{
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}
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ThreadMemory::ThreadMemory (Process &process,
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lldb::tid_t tid,
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const char *name,
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const char *queue,
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lldb::addr_t register_data_addr) :
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Thread (process, tid),
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m_backing_thread_sp (),
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m_thread_info_valobj_sp (),
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m_name(),
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m_queue(),
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m_register_data_addr (register_data_addr)
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{
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if (name)
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m_name = name;
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if (queue)
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m_queue = queue;
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}
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ThreadMemory::~ThreadMemory()
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{
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DestroyThread();
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}
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void
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ThreadMemory::WillResume (StateType resume_state)
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{
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if (m_backing_thread_sp)
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m_backing_thread_sp->WillResume(resume_state);
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}
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void
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ThreadMemory::ClearStackFrames ()
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{
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if (m_backing_thread_sp)
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m_backing_thread_sp->ClearStackFrames();
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Thread::ClearStackFrames();
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}
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RegisterContextSP
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ThreadMemory::GetRegisterContext ()
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{
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if (!m_reg_context_sp)
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m_reg_context_sp.reset (new RegisterContextThreadMemory (*this, m_register_data_addr));
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return m_reg_context_sp;
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}
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RegisterContextSP
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ThreadMemory::CreateRegisterContextForFrame (StackFrame *frame)
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{
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RegisterContextSP reg_ctx_sp;
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uint32_t concrete_frame_idx = 0;
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if (frame)
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concrete_frame_idx = frame->GetConcreteFrameIndex ();
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if (concrete_frame_idx == 0)
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{
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reg_ctx_sp = GetRegisterContext ();
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}
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else
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{
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Unwind *unwinder = GetUnwinder ();
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if (unwinder)
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reg_ctx_sp = unwinder->CreateRegisterContextForFrame (frame);
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}
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return reg_ctx_sp;
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}
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bool
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ThreadMemory::CalculateStopInfo ()
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{
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if (m_backing_thread_sp)
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{
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lldb::StopInfoSP backing_stop_info_sp (m_backing_thread_sp->GetPrivateStopInfo());
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if (backing_stop_info_sp)
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{
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backing_stop_info_sp->SetThread (shared_from_this());
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SetStopInfo (backing_stop_info_sp);
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return true;
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}
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}
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else
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{
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ProcessSP process_sp (GetProcess());
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if (process_sp)
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{
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OperatingSystem *os = process_sp->GetOperatingSystem ();
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if (os)
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{
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SetStopInfo (os->CreateThreadStopReason (this));
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return true;
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}
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}
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}
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return false;
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}
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void
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ThreadMemory::RefreshStateAfterStop()
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{
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if (m_backing_thread_sp)
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return m_backing_thread_sp->RefreshStateAfterStop();
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if (m_reg_context_sp)
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m_reg_context_sp->InvalidateAllRegisters();
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}
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