GDBRemoteCommunicationHistory.cpp
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//===-- GDBRemoteCommunicationHistory.cpp -----------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "GDBRemoteCommunicationHistory.h"
// Other libraries and framework includes
#include "lldb/Core/StreamFile.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/Log.h"
using namespace llvm;
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::process_gdb_remote;
GDBRemoteCommunicationHistory::GDBRemoteCommunicationHistory(uint32_t size)
: m_packets(), m_curr_idx(0), m_total_packet_count(0),
m_dumped_to_log(false) {
if (size)
m_packets.resize(size);
}
GDBRemoteCommunicationHistory::~GDBRemoteCommunicationHistory() {}
void GDBRemoteCommunicationHistory::AddPacket(char packet_char,
GDBRemotePacket::Type type,
uint32_t bytes_transmitted) {
const size_t size = m_packets.size();
if (size == 0)
return;
const uint32_t idx = GetNextIndex();
m_packets[idx].packet.data.assign(1, packet_char);
m_packets[idx].type = type;
m_packets[idx].bytes_transmitted = bytes_transmitted;
m_packets[idx].packet_idx = m_total_packet_count;
m_packets[idx].tid = llvm::get_threadid();
if (m_recorder)
m_recorder->Record(m_packets[idx]);
}
void GDBRemoteCommunicationHistory::AddPacket(const std::string &src,
uint32_t src_len,
GDBRemotePacket::Type type,
uint32_t bytes_transmitted) {
const size_t size = m_packets.size();
if (size == 0)
return;
const uint32_t idx = GetNextIndex();
m_packets[idx].packet.data.assign(src, 0, src_len);
m_packets[idx].type = type;
m_packets[idx].bytes_transmitted = bytes_transmitted;
m_packets[idx].packet_idx = m_total_packet_count;
m_packets[idx].tid = llvm::get_threadid();
if (m_recorder)
m_recorder->Record(m_packets[idx]);
}
void GDBRemoteCommunicationHistory::Dump(Stream &strm) const {
const uint32_t size = GetNumPacketsInHistory();
const uint32_t first_idx = GetFirstSavedPacketIndex();
const uint32_t stop_idx = m_curr_idx + size;
for (uint32_t i = first_idx; i < stop_idx; ++i) {
const uint32_t idx = NormalizeIndex(i);
const GDBRemotePacket &entry = m_packets[idx];
if (entry.type == GDBRemotePacket::ePacketTypeInvalid ||
entry.packet.data.empty())
break;
strm.Printf("history[%u] ", entry.packet_idx);
entry.Dump(strm);
}
}
void GDBRemoteCommunicationHistory::Dump(Log *log) const {
if (!log || m_dumped_to_log)
return;
m_dumped_to_log = true;
const uint32_t size = GetNumPacketsInHistory();
const uint32_t first_idx = GetFirstSavedPacketIndex();
const uint32_t stop_idx = m_curr_idx + size;
for (uint32_t i = first_idx; i < stop_idx; ++i) {
const uint32_t idx = NormalizeIndex(i);
const GDBRemotePacket &entry = m_packets[idx];
if (entry.type == GDBRemotePacket::ePacketTypeInvalid ||
entry.packet.data.empty())
break;
LLDB_LOGF(log, "history[%u] tid=0x%4.4" PRIx64 " <%4u> %s packet: %s",
entry.packet_idx, entry.tid, entry.bytes_transmitted,
(entry.type == GDBRemotePacket::ePacketTypeSend) ? "send"
: "read",
entry.packet.data.c_str());
}
}