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
GetLogStream(StringRef log_file)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_Text | 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
SetupLogging(const std::string & log_file,const StringRef & log_channels,uint32_t log_options)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