1 //===-- LLDBServerUtilities.cpp ---------------------------------*- C++ -*-===// 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 "LLDBServerUtilities.h" 10 11 #include "lldb/Utility/Args.h" 12 #include "lldb/Utility/Log.h" 13 #include "lldb/Utility/StreamString.h" 14 15 #include "llvm/ADT/SmallVector.h" 16 #include "llvm/ADT/StringRef.h" 17 #include "llvm/Support/FileSystem.h" 18 19 using namespace lldb; 20 using namespace lldb_private::lldb_server; 21 using namespace llvm; 22 23 static std::shared_ptr<raw_ostream> GetLogStream(StringRef log_file) { 24 if (!log_file.empty()) { 25 std::error_code EC; 26 std::shared_ptr<raw_ostream> stream_sp = std::make_shared<raw_fd_ostream>( 27 log_file, EC, sys::fs::OF_TextWithCRLF | sys::fs::OF_Append); 28 if (!EC) 29 return stream_sp; 30 errs() << llvm::formatv( 31 "Failed to open log file `{0}`: {1}\nWill log to stderr instead.\n", 32 log_file, EC.message()); 33 } 34 // No need to delete the stderr stream. 35 return std::shared_ptr<raw_ostream>(&errs(), [](raw_ostream *) {}); 36 } 37 38 bool LLDBServerUtilities::SetupLogging(const std::string &log_file, 39 const StringRef &log_channels, 40 uint32_t log_options) { 41 42 auto log_stream_sp = GetLogStream(log_file); 43 44 SmallVector<StringRef, 32> channel_array; 45 log_channels.split(channel_array, ":", /*MaxSplit*/ -1, /*KeepEmpty*/ false); 46 for (auto channel_with_categories : channel_array) { 47 std::string error; 48 llvm::raw_string_ostream error_stream(error); 49 Args channel_then_categories(channel_with_categories); 50 std::string channel(channel_then_categories.GetArgumentAtIndex(0)); 51 channel_then_categories.Shift(); // Shift off the channel 52 53 bool success = Log::EnableLogChannel( 54 log_stream_sp, log_options, channel, 55 channel_then_categories.GetArgumentArrayRef(), error_stream); 56 if (!success) { 57 errs() << formatv("Unable to setup logging for channel \"{0}\": {1}", 58 channel, error_stream.str()); 59 return false; 60 } 61 } 62 return true; 63 } 64