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
GDBRemoteCommunicationHistory(uint32_t size)20 GDBRemoteCommunicationHistory::GDBRemoteCommunicationHistory(uint32_t size)
21 : m_packets() {
22 if (size)
23 m_packets.resize(size);
24 }
25
26 GDBRemoteCommunicationHistory::~GDBRemoteCommunicationHistory() = default;
27
AddPacket(char packet_char,GDBRemotePacket::Type type,uint32_t bytes_transmitted)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
AddPacket(const std::string & src,uint32_t src_len,GDBRemotePacket::Type type,uint32_t bytes_transmitted)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
Dump(Stream & strm) const59 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
Dump(Log * log) const74 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