1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
//===-- RunInTerminal.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 "RunInTerminal.h"
#if !defined(_WIN32)
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#endif
#include <chrono>
#include <fstream>
#include <future>
#include <thread>
#include "llvm/Support/FileSystem.h"
#include "lldb/lldb-defines.h"
using namespace llvm;
namespace lldb_dap {
const RunInTerminalMessagePid *RunInTerminalMessage::GetAsPidMessage() const {
return static_cast<const RunInTerminalMessagePid *>(this);
}
const RunInTerminalMessageError *
RunInTerminalMessage::GetAsErrorMessage() const {
return static_cast<const RunInTerminalMessageError *>(this);
}
RunInTerminalMessage::RunInTerminalMessage(RunInTerminalMessageKind kind)
: kind(kind) {}
RunInTerminalMessagePid::RunInTerminalMessagePid(lldb::pid_t pid)
: RunInTerminalMessage(eRunInTerminalMessageKindPID), pid(pid) {}
json::Value RunInTerminalMessagePid::ToJSON() const {
return json::Object{{"kind", "pid"}, {"pid", static_cast<int64_t>(pid)}};
}
RunInTerminalMessageError::RunInTerminalMessageError(StringRef error)
: RunInTerminalMessage(eRunInTerminalMessageKindError), error(error) {}
json::Value RunInTerminalMessageError::ToJSON() const {
return json::Object{{"kind", "error"}, {"value", error}};
}
RunInTerminalMessageDidAttach::RunInTerminalMessageDidAttach()
: RunInTerminalMessage(eRunInTerminalMessageKindDidAttach) {}
json::Value RunInTerminalMessageDidAttach::ToJSON() const {
return json::Object{{"kind", "didAttach"}};
}
static Expected<RunInTerminalMessageUP>
ParseJSONMessage(const json::Value &json) {
if (const json::Object *obj = json.getAsObject()) {
if (std::optional<StringRef> kind = obj->getString("kind")) {
if (*kind == "pid") {
if (std::optional<int64_t> pid = obj->getInteger("pid"))
return std::make_unique<RunInTerminalMessagePid>(
static_cast<lldb::pid_t>(*pid));
} else if (*kind == "error") {
if (std::optional<StringRef> error = obj->getString("error"))
return std::make_unique<RunInTerminalMessageError>(*error);
} else if (*kind == "didAttach") {
return std::make_unique<RunInTerminalMessageDidAttach>();
}
}
}
return createStringError(inconvertibleErrorCode(),
"Incorrect JSON message: " + JSONToString(json));
}
static Expected<RunInTerminalMessageUP>
GetNextMessage(FifoFileIO &io, std::chrono::milliseconds timeout) {
if (Expected<json::Value> json = io.ReadJSON(timeout))
return ParseJSONMessage(*json);
else
return json.takeError();
}
static Error ToError(const RunInTerminalMessage &message) {
if (message.kind == eRunInTerminalMessageKindError)
return createStringError(inconvertibleErrorCode(),
message.GetAsErrorMessage()->error);
return createStringError(inconvertibleErrorCode(),
"Unexpected JSON message: " +
JSONToString(message.ToJSON()));
}
RunInTerminalLauncherCommChannel::RunInTerminalLauncherCommChannel(
StringRef comm_file)
: m_io(comm_file, "debug adaptor") {}
Error RunInTerminalLauncherCommChannel::WaitUntilDebugAdaptorAttaches(
std::chrono::milliseconds timeout) {
if (Expected<RunInTerminalMessageUP> message =
GetNextMessage(m_io, timeout)) {
if (message.get()->kind == eRunInTerminalMessageKindDidAttach)
return Error::success();
else
return ToError(*message.get());
} else
return message.takeError();
}
Error RunInTerminalLauncherCommChannel::NotifyPid() {
return m_io.SendJSON(RunInTerminalMessagePid(getpid()).ToJSON());
}
void RunInTerminalLauncherCommChannel::NotifyError(StringRef error) {
if (Error err = m_io.SendJSON(RunInTerminalMessageError(error).ToJSON(),
std::chrono::seconds(2)))
llvm::errs() << llvm::toString(std::move(err)) << "\n";
}
RunInTerminalDebugAdapterCommChannel::RunInTerminalDebugAdapterCommChannel(
StringRef comm_file)
: m_io(comm_file, "runInTerminal launcher") {}
// Can't use \a std::future<llvm::Error> because it doesn't compile on Windows
std::future<lldb::SBError>
RunInTerminalDebugAdapterCommChannel::NotifyDidAttach() {
return std::async(std::launch::async, [&]() {
lldb::SBError error;
if (llvm::Error err =
m_io.SendJSON(RunInTerminalMessageDidAttach().ToJSON()))
error.SetErrorString(llvm::toString(std::move(err)).c_str());
return error;
});
}
Expected<lldb::pid_t> RunInTerminalDebugAdapterCommChannel::GetLauncherPid() {
if (Expected<RunInTerminalMessageUP> message =
GetNextMessage(m_io, std::chrono::seconds(20))) {
if (message.get()->kind == eRunInTerminalMessageKindPID)
return message.get()->GetAsPidMessage()->pid;
return ToError(*message.get());
} else {
return message.takeError();
}
}
std::string RunInTerminalDebugAdapterCommChannel::GetLauncherError() {
// We know there's been an error, so a small timeout is enough.
if (Expected<RunInTerminalMessageUP> message =
GetNextMessage(m_io, std::chrono::seconds(1)))
return toString(ToError(*message.get()));
else
return toString(message.takeError());
}
Expected<std::shared_ptr<FifoFile>> CreateRunInTerminalCommFile() {
SmallString<256> comm_file;
if (std::error_code EC = sys::fs::getPotentiallyUniqueTempFileName(
"lldb-dap-run-in-terminal-comm", "", comm_file))
return createStringError(EC, "Error making unique file name for "
"runInTerminal communication files");
return CreateFifoFile(comm_file.str());
}
} // namespace lldb_dap
|
