121 lines
3.8 KiB
C++
121 lines
3.8 KiB
C++
//===-- HostProcessWindows.cpp --------------------------------------------===//
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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 "llvm/Support/WindowsError.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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llvm::Expected<HostThread> HostProcessWindows::StartMonitoring(
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const Host::MonitorChildProcessCallback &callback, bool monitor_signals) {
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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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if (::DuplicateHandle(GetCurrentProcess(), m_process, GetCurrentProcess(),
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&info->process_handle, 0, FALSE, DUPLICATE_SAME_ACCESS)) {
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return ThreadLauncher::LaunchThread("ChildProcessMonitor",
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HostProcessWindows::MonitorThread,
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info);
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} else {
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return llvm::errorCodeToError(llvm::mapWindowsError(GetLastError()));
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}
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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 {};
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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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