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//===-- GDBRemoteCommunication.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_GDBRemoteCommunication_h_
#define liblldb_GDBRemoteCommunication_h_
// C Includes
// C++ Includes
#include <list>
#include <string>
// Other libraries and framework includes
// Project includes
#include "lldb/lldb-private.h"
#include "lldb/Core/Communication.h"
#include "lldb/Core/Listener.h"
#include "lldb/Host/Mutex.h"
#include "lldb/Host/Predicate.h"
#include "Utility/StringExtractorGDBRemote.h"
class ProcessGDBRemote;
class GDBRemoteCommunication : public lldb_private::Communication
{
public:
enum
{
eBroadcastBitRunPacketSent = kLoUserBroadcastBit
};
//------------------------------------------------------------------
// Constructors and Destructors
//------------------------------------------------------------------
GDBRemoteCommunication(const char *comm_name,
const char *listener_name,
bool is_platform);
virtual
~GDBRemoteCommunication();
size_t
SendPacket (const char *payload);
size_t
SendPacket (const char *payload,
size_t payload_length);
size_t
SendPacket (lldb_private::StreamString &response);
// Wait for a packet within 'nsec' seconds
size_t
WaitForPacket (StringExtractorGDBRemote &response,
uint32_t sec);
// Wait for a packet with an absolute timeout time. If 'timeout' is NULL
// wait indefinitely.
size_t
WaitForPacket (StringExtractorGDBRemote &response,
const lldb_private::TimeValue* timeout);
char
GetAck ();
size_t
SendAck ();
size_t
SendNack ();
char
CalculcateChecksum (const char *payload,
size_t payload_length);
bool
GetSequenceMutex(lldb_private::Mutex::Locker& locker);
//------------------------------------------------------------------
// Communication overrides
//------------------------------------------------------------------
virtual void
AppendBytesToCache (const uint8_t *src, size_t src_len, bool broadcast, lldb::ConnectionStatus status);
bool
IsRunning() const
{
return m_public_is_running.GetValue();
}
bool
GetSendAcks ()
{
return m_send_acks;
}
//------------------------------------------------------------------
// Client and server must implement these pure virtual functions
//------------------------------------------------------------------
virtual bool
GetThreadSuffixSupported () = 0;
//------------------------------------------------------------------
// Set the global packet timeout.
//
// For clients, this is the timeout that gets used when sending
// packets and waiting for responses. For servers, this might not
// get used, and if it doesn't this should be moved to the
// GDBRemoteCommunicationClient.
//------------------------------------------------------------------
uint32_t
SetPacketTimeout (uint32_t packet_timeout)
{
const uint32_t old_packet_timeout = m_packet_timeout;
m_packet_timeout = packet_timeout;
return old_packet_timeout;
}
//------------------------------------------------------------------
// Start a debugserver instance on the current host using the
// supplied connection URL.
//------------------------------------------------------------------
lldb_private::Error
StartDebugserverProcess (const char *connect_url,
const char *unix_socket_name,
lldb_private::ProcessLaunchInfo &launch_info);
protected:
typedef std::list<std::string> packet_collection;
size_t
SendPacketNoLock (const char *payload,
size_t payload_length);
size_t
WaitForPacketNoLock (StringExtractorGDBRemote &response,
const lldb_private::TimeValue* timeout_ptr);
bool
WaitForNotRunningPrivate (const lldb_private::TimeValue *timeout_ptr);
//------------------------------------------------------------------
// Classes that inherit from GDBRemoteCommunication can see and modify these
//------------------------------------------------------------------
uint32_t m_packet_timeout;
lldb_private::Listener m_rx_packet_listener;
lldb_private::Mutex m_sequence_mutex; // Restrict access to sending/receiving packets to a single thread at a time
lldb_private::Predicate<bool> m_public_is_running;
lldb_private::Predicate<bool> m_private_is_running;
bool m_send_acks;
bool m_is_platform; // Set to true if this class represents a platform,
// false if this class represents a debug session for
// a single process
private:
//------------------------------------------------------------------
// For GDBRemoteCommunication only
//------------------------------------------------------------------
DISALLOW_COPY_AND_ASSIGN (GDBRemoteCommunication);
};
#endif // liblldb_GDBRemoteCommunication_h_
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