lldb/source/Plugins/Process/gdb-remote/ThreadGDBRemote.h

//===-- ThreadGDBRemote.h ---------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef liblldb_ThreadGDBRemote_h_
#define liblldb_ThreadGDBRemote_h_

#include <string>

#include "lldb/Core/StructuredData.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Thread.h"

class StringExtractor;

namespace lldb_private {
namespace process_gdb_remote {

class ProcessGDBRemote;

class ThreadGDBRemote : public Thread
{
public:
    ThreadGDBRemote (Process &process, lldb::tid_t tid);

    virtual
    ~ThreadGDBRemote ();

    void
    WillResume (lldb::StateType resume_state) override;

    void
    RefreshStateAfterStop() override;

    const char *
    GetName () override;

    const char *
    GetQueueName () override;

    lldb::queue_id_t
    GetQueueID () override;

    lldb::QueueSP
    GetQueue () override;

    lldb::addr_t
    GetQueueLibdispatchQueueAddress () override;

    lldb::RegisterContextSP
    GetRegisterContext () override;

    lldb::RegisterContextSP
    CreateRegisterContextForFrame (StackFrame *frame) override;

    void
    Dump (Log *log, uint32_t index);

    static bool
    ThreadIDIsValid (lldb::tid_t thread);

    bool
    ShouldStop (bool &step_more);

    const char *
    GetBasicInfoAsString ();

    void
    SetName (const char *name) override
    {
        if (name && name[0])
            m_thread_name.assign (name);
        else
            m_thread_name.clear();
    }

    lldb::addr_t
    GetThreadDispatchQAddr ()
    {
        return m_thread_dispatch_qaddr;
    }

    void
    SetThreadDispatchQAddr (lldb::addr_t thread_dispatch_qaddr)
    {
        m_thread_dispatch_qaddr = thread_dispatch_qaddr;
    }

    void
    ClearQueueInfo ();
    
    void
    SetQueueInfo (std::string &&queue_name, lldb::QueueKind queue_kind, uint64_t queue_serial);

    StructuredData::ObjectSP
    FetchThreadExtendedInfo () override;

protected:
    
    friend class ProcessGDBRemote;

    bool
    PrivateSetRegisterValue (uint32_t reg, 
                             StringExtractor &response);

    bool
    CachedQueueInfoIsValid() const
    {
        return m_queue_kind != lldb::eQueueKindUnknown;
    }
    //------------------------------------------------------------------
    // Member variables.
    //------------------------------------------------------------------
    std::string m_thread_name;
    std::string m_dispatch_queue_name;
    lldb::addr_t m_thread_dispatch_qaddr;
    lldb::QueueKind m_queue_kind;     // Queue info from stop reply/stop info for thread
    uint64_t m_queue_serial;    // Queue info from stop reply/stop info for thread
    //------------------------------------------------------------------
    // Member variables.
    //------------------------------------------------------------------

    void
    SetStopInfoFromPacket (StringExtractor &stop_packet, uint32_t stop_id);

    bool
    CalculateStopInfo () override;
};

} // namespace process_gdb_remote
} // namespace lldb_private

#endif  // liblldb_ThreadGDBRemote_h_