forked from OSchip/llvm-project
87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
//===-- GDBRemoteCommunicationHistory.h--------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLDB_SOURCE_PLUGINS_PROCESS_GDB_REMOTE_GDBREMOTECOMMUNICATIONHISTORY_H
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#define LLDB_SOURCE_PLUGINS_PROCESS_GDB_REMOTE_GDBREMOTECOMMUNICATIONHISTORY_H
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#include <string>
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#include <vector>
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#include "lldb/Utility/GDBRemote.h"
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#include "lldb/Utility/Reproducer.h"
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#include "lldb/lldb-public.h"
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#include "llvm/Support/YAMLTraits.h"
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#include "llvm/Support/raw_ostream.h"
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namespace lldb_private {
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namespace repro {
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class PacketRecorder;
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}
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namespace process_gdb_remote {
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/// The history keeps a circular buffer of GDB remote packets. The history is
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/// used for logging and replaying GDB remote packets.
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class GDBRemoteCommunicationHistory {
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public:
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friend llvm::yaml::MappingTraits<GDBRemoteCommunicationHistory>;
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GDBRemoteCommunicationHistory(uint32_t size = 0);
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~GDBRemoteCommunicationHistory();
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// For single char packets for ack, nack and /x03
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void AddPacket(char packet_char, GDBRemotePacket::Type type,
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uint32_t bytes_transmitted);
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void AddPacket(const std::string &src, uint32_t src_len,
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GDBRemotePacket::Type type, uint32_t bytes_transmitted);
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void Dump(Stream &strm) const;
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void Dump(Log *log) const;
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bool DidDumpToLog() const { return m_dumped_to_log; }
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void SetRecorder(repro::PacketRecorder *recorder) { m_recorder = recorder; }
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private:
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uint32_t GetFirstSavedPacketIndex() const {
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if (m_total_packet_count < m_packets.size())
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return 0;
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else
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return m_curr_idx + 1;
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}
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uint32_t GetNumPacketsInHistory() const {
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if (m_total_packet_count < m_packets.size())
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return m_total_packet_count;
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else
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return (uint32_t)m_packets.size();
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}
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uint32_t GetNextIndex() {
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++m_total_packet_count;
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const uint32_t idx = m_curr_idx;
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m_curr_idx = NormalizeIndex(idx + 1);
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return idx;
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}
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uint32_t NormalizeIndex(uint32_t i) const {
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return m_packets.empty() ? 0 : i % m_packets.size();
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}
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std::vector<GDBRemotePacket> m_packets;
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uint32_t m_curr_idx;
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uint32_t m_total_packet_count;
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mutable bool m_dumped_to_log;
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repro::PacketRecorder *m_recorder = nullptr;
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};
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} // namespace process_gdb_remote
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} // namespace lldb_private
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#endif // LLDB_SOURCE_PLUGINS_PROCESS_GDB_REMOTE_GDBREMOTECOMMUNICATIONHISTORY_H
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