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//===-- HostProcessWindows.cpp ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/FileSpec.h"
#include "lldb/Host/HostThread.h"
#include "lldb/Host/ThreadLauncher.h"
#include "lldb/Host/windows/windows.h"
#include "lldb/Host/windows/HostProcessWindows.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/ConvertUTF.h"
#include <Psapi.h>
using namespace lldb_private;
namespace
{
struct MonitorInfo
{
Host::MonitorChildProcessCallback callback;
HANDLE process_handle;
};
}
HostProcessWindows::HostProcessWindows()
: HostNativeProcessBase()
, m_owns_handle(true)
{
}
HostProcessWindows::HostProcessWindows(lldb::process_t process)
: HostNativeProcessBase(process)
, m_owns_handle(true)
{
}
HostProcessWindows::~HostProcessWindows()
{
Close();
}
void
HostProcessWindows::SetOwnsHandle(bool owns)
{
m_owns_handle = owns;
}
Error HostProcessWindows::Terminate()
{
Error error;
if (m_process == nullptr)
error.SetError(ERROR_INVALID_HANDLE, lldb::eErrorTypeWin32);
if (!::TerminateProcess(m_process, 0))
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
return error;
}
Error HostProcessWindows::GetMainModule(FileSpec &file_spec) const
{
Error error;
if (m_process == nullptr)
error.SetError(ERROR_INVALID_HANDLE, lldb::eErrorTypeWin32);
std::vector<wchar_t> wpath(PATH_MAX);
if (::GetProcessImageFileNameW(m_process, wpath.data(), wpath.size()))
{
std::string path;
if (llvm::convertWideToUTF8(wpath.data(), path))
file_spec.SetFile(path, false);
else
error.SetErrorString("Error converting path to UTF-8");
}
else
error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
return error;
}
lldb::pid_t HostProcessWindows::GetProcessId() const
{
return (m_process == LLDB_INVALID_PROCESS) ? -1 : ::GetProcessId(m_process);
}
bool HostProcessWindows::IsRunning() const
{
if (m_process == nullptr)
return false;
DWORD code = 0;
if (!::GetExitCodeProcess(m_process, &code))
return false;
return (code == STILL_ACTIVE);
}
HostThread
HostProcessWindows::StartMonitoring(const Host::MonitorChildProcessCallback &callback, bool monitor_signals)
{
HostThread monitor_thread;
MonitorInfo *info = new MonitorInfo;
info->callback = callback;
// Since the life of this HostProcessWindows instance and the life of the process may be different, duplicate the handle so that
// the monitor thread can have ownership over its own copy of the handle.
HostThread result;
if (::DuplicateHandle(GetCurrentProcess(), m_process, GetCurrentProcess(), &info->process_handle, 0, FALSE, DUPLICATE_SAME_ACCESS))
result = ThreadLauncher::LaunchThread("ChildProcessMonitor", HostProcessWindows::MonitorThread, info, nullptr);
return result;
}
lldb::thread_result_t
HostProcessWindows::MonitorThread(void *thread_arg)
{
DWORD exit_code;
MonitorInfo *info = static_cast<MonitorInfo *>(thread_arg);
if (info)
{
::WaitForSingleObject(info->process_handle, INFINITE);
::GetExitCodeProcess(info->process_handle, &exit_code);
info->callback(::GetProcessId(info->process_handle), true, 0, exit_code);
::CloseHandle(info->process_handle);
delete (info);
}
return 0;
}
void HostProcessWindows::Close()
{
if (m_owns_handle && m_process != LLDB_INVALID_PROCESS)
::CloseHandle(m_process);
m_process = nullptr;
}
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