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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
//===-- HostProcessWindows.cpp ----------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/windows/HostProcessWindows.h"
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#include "lldb/Host/HostThread.h"
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#include "lldb/Host/ThreadLauncher.h"
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#include "lldb/Host/windows/windows.h"
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#include "lldb/Utility/FileSpec.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/ConvertUTF.h"
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#include <psapi.h>
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using namespace lldb_private;
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namespace {
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struct MonitorInfo {
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Host::MonitorChildProcessCallback callback;
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HANDLE process_handle;
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};
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}
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HostProcessWindows::HostProcessWindows()
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: HostNativeProcessBase(), m_owns_handle(true) {}
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HostProcessWindows::HostProcessWindows(lldb::process_t process)
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: HostNativeProcessBase(process), m_owns_handle(true) {}
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HostProcessWindows::~HostProcessWindows() { Close(); }
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void HostProcessWindows::SetOwnsHandle(bool owns) { m_owns_handle = owns; }
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Status HostProcessWindows::Terminate() {
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Status error;
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if (m_process == nullptr)
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error.SetError(ERROR_INVALID_HANDLE, lldb::eErrorTypeWin32);
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if (!::TerminateProcess(m_process, 0))
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error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
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return error;
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}
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Status HostProcessWindows::GetMainModule(FileSpec &file_spec) const {
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Status error;
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if (m_process == nullptr)
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error.SetError(ERROR_INVALID_HANDLE, lldb::eErrorTypeWin32);
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std::vector<wchar_t> wpath(PATH_MAX);
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if (::GetProcessImageFileNameW(m_process, wpath.data(), wpath.size())) {
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std::string path;
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if (llvm::convertWideToUTF8(wpath.data(), path))
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file_spec.SetFile(path, FileSpec::Style::native);
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else
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error.SetErrorString("Error converting path to UTF-8");
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} else
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error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
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return error;
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}
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lldb::pid_t HostProcessWindows::GetProcessId() const {
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return (m_process == LLDB_INVALID_PROCESS) ? -1 : ::GetProcessId(m_process);
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}
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bool HostProcessWindows::IsRunning() const {
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if (m_process == nullptr)
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return false;
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DWORD code = 0;
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if (!::GetExitCodeProcess(m_process, &code))
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return false;
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return (code == STILL_ACTIVE);
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}
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HostThread HostProcessWindows::StartMonitoring(
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const Host::MonitorChildProcessCallback &callback, bool monitor_signals) {
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HostThread monitor_thread;
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MonitorInfo *info = new MonitorInfo;
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info->callback = callback;
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// Since the life of this HostProcessWindows instance and the life of the
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// process may be different, duplicate the handle so that the monitor thread
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// can have ownership over its own copy of the handle.
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HostThread result;
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if (::DuplicateHandle(GetCurrentProcess(), m_process, GetCurrentProcess(),
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&info->process_handle, 0, FALSE, DUPLICATE_SAME_ACCESS))
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result = ThreadLauncher::LaunchThread("ChildProcessMonitor",
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HostProcessWindows::MonitorThread,
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info, nullptr);
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return result;
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}
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lldb::thread_result_t HostProcessWindows::MonitorThread(void *thread_arg) {
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DWORD exit_code;
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MonitorInfo *info = static_cast<MonitorInfo *>(thread_arg);
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if (info) {
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::WaitForSingleObject(info->process_handle, INFINITE);
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::GetExitCodeProcess(info->process_handle, &exit_code);
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info->callback(::GetProcessId(info->process_handle), true, 0, exit_code);
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::CloseHandle(info->process_handle);
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delete (info);
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}
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return 0;
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}
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void HostProcessWindows::Close() {
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if (m_owns_handle && m_process != LLDB_INVALID_PROCESS)
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::CloseHandle(m_process);
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m_process = nullptr;
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}
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