MonitoringProcessLauncher.cpp
2.44 KB
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
//===-- MonitoringProcessLauncher.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 "lldb/Host/MonitoringProcessLauncher.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Host/HostProcess.h"
#include "lldb/Host/ProcessLaunchInfo.h"
#include "lldb/Utility/Log.h"
#include "llvm/Support/FileSystem.h"
using namespace lldb;
using namespace lldb_private;
MonitoringProcessLauncher::MonitoringProcessLauncher(
std::unique_ptr<ProcessLauncher> delegate_launcher)
: m_delegate_launcher(std::move(delegate_launcher)) {}
HostProcess
MonitoringProcessLauncher::LaunchProcess(const ProcessLaunchInfo &launch_info,
Status &error) {
ProcessLaunchInfo resolved_info(launch_info);
error.Clear();
FileSystem &fs = FileSystem::Instance();
FileSpec exe_spec(resolved_info.GetExecutableFile());
if (!fs.Exists(exe_spec))
FileSystem::Instance().Resolve(exe_spec);
if (!fs.Exists(exe_spec))
FileSystem::Instance().ResolveExecutableLocation(exe_spec);
if (!fs.Exists(exe_spec)) {
error.SetErrorStringWithFormatv("executable doesn't exist: '{0}'",
exe_spec);
return HostProcess();
}
resolved_info.SetExecutableFile(exe_spec, false);
assert(!resolved_info.GetFlags().Test(eLaunchFlagLaunchInTTY));
HostProcess process =
m_delegate_launcher->LaunchProcess(resolved_info, error);
if (process.GetProcessId() != LLDB_INVALID_PROCESS_ID) {
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
assert(launch_info.GetMonitorProcessCallback());
llvm::Expected<HostThread> maybe_thread =
process.StartMonitoring(launch_info.GetMonitorProcessCallback(),
launch_info.GetMonitorSignals());
if (!maybe_thread)
error.SetErrorStringWithFormatv("failed to launch host thread: {}",
llvm::toString(maybe_thread.takeError()));
if (log)
log->PutCString("started monitoring child process.");
} else {
// Invalid process ID, something didn't go well
if (error.Success())
error.SetErrorString("process launch failed for unknown reasons");
}
return process;
}