1 //===-- GDBRemoteCommunicationHistory.cpp ---------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "GDBRemoteCommunicationHistory.h" 10 11 // Other libraries and framework includes 12 #include "lldb/Utility/ConstString.h" 13 #include "lldb/Utility/Log.h" 14 15 using namespace llvm; 16 using namespace lldb; 17 using namespace lldb_private; 18 using namespace lldb_private::process_gdb_remote; 19 20 GDBRemoteCommunicationHistory::GDBRemoteCommunicationHistory(uint32_t size) 21 : m_packets() { 22 if (size) 23 m_packets.resize(size); 24 } 25 26 GDBRemoteCommunicationHistory::~GDBRemoteCommunicationHistory() = default; 27 28 void GDBRemoteCommunicationHistory::AddPacket(char packet_char, 29 GDBRemotePacket::Type type, 30 uint32_t bytes_transmitted) { 31 const size_t size = m_packets.size(); 32 if (size == 0) 33 return; 34 35 const uint32_t idx = GetNextIndex(); 36 m_packets[idx].packet.data.assign(1, packet_char); 37 m_packets[idx].type = type; 38 m_packets[idx].bytes_transmitted = bytes_transmitted; 39 m_packets[idx].packet_idx = m_total_packet_count; 40 m_packets[idx].tid = llvm::get_threadid(); 41 } 42 43 void GDBRemoteCommunicationHistory::AddPacket(const std::string &src, 44 uint32_t src_len, 45 GDBRemotePacket::Type type, 46 uint32_t bytes_transmitted) { 47 const size_t size = m_packets.size(); 48 if (size == 0) 49 return; 50 51 const uint32_t idx = GetNextIndex(); 52 m_packets[idx].packet.data.assign(src, 0, src_len); 53 m_packets[idx].type = type; 54 m_packets[idx].bytes_transmitted = bytes_transmitted; 55 m_packets[idx].packet_idx = m_total_packet_count; 56 m_packets[idx].tid = llvm::get_threadid(); 57 } 58 59 void GDBRemoteCommunicationHistory::Dump(Stream &strm) const { 60 const uint32_t size = GetNumPacketsInHistory(); 61 const uint32_t first_idx = GetFirstSavedPacketIndex(); 62 const uint32_t stop_idx = m_curr_idx + size; 63 for (uint32_t i = first_idx; i < stop_idx; ++i) { 64 const uint32_t idx = NormalizeIndex(i); 65 const GDBRemotePacket &entry = m_packets[idx]; 66 if (entry.type == GDBRemotePacket::ePacketTypeInvalid || 67 entry.packet.data.empty()) 68 break; 69 strm.Printf("history[%u] ", entry.packet_idx); 70 entry.Dump(strm); 71 } 72 } 73 74 void GDBRemoteCommunicationHistory::Dump(Log *log) const { 75 if (!log || m_dumped_to_log) 76 return; 77 78 m_dumped_to_log = true; 79 const uint32_t size = GetNumPacketsInHistory(); 80 const uint32_t first_idx = GetFirstSavedPacketIndex(); 81 const uint32_t stop_idx = m_curr_idx + size; 82 for (uint32_t i = first_idx; i < stop_idx; ++i) { 83 const uint32_t idx = NormalizeIndex(i); 84 const GDBRemotePacket &entry = m_packets[idx]; 85 if (entry.type == GDBRemotePacket::ePacketTypeInvalid || 86 entry.packet.data.empty()) 87 break; 88 LLDB_LOGF(log, "history[%u] tid=0x%4.4" PRIx64 " <%4u> %s packet: %s", 89 entry.packet_idx, entry.tid, entry.bytes_transmitted, 90 (entry.type == GDBRemotePacket::ePacketTypeSend) ? "send" 91 : "read", 92 entry.packet.data.c_str()); 93 } 94 } 95 96