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//===-- HostInfoWindows.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/windows/windows.h"
#include <objbase.h>
#include <mutex>
#include "lldb/Host/windows/HostInfoWindows.h"
#include "lldb/Host/windows/PosixApi.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Threading.h"
#include "llvm/Support/raw_ostream.h"
using namespace lldb_private;
FileSpec HostInfoWindows::m_program_filespec;
void HostInfoWindows::Initialize() {
::CoInitializeEx(nullptr, COINIT_MULTITHREADED);
HostInfoBase::Initialize();
}
void HostInfoWindows::Terminate() {
HostInfoBase::Terminate();
::CoUninitialize();
}
size_t HostInfoWindows::GetPageSize() {
SYSTEM_INFO systemInfo;
GetNativeSystemInfo(&systemInfo);
return systemInfo.dwPageSize;
}
llvm::VersionTuple HostInfoWindows::GetOSVersion() {
OSVERSIONINFOEX info;
ZeroMemory(&info, sizeof(OSVERSIONINFOEX));
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
#pragma warning(push)
#pragma warning(disable : 4996)
// Starting with Microsoft SDK for Windows 8.1, this function is deprecated
// in favor of the new Windows Version Helper APIs. Since we don't specify a
// minimum SDK version, it's easier to simply disable the warning rather than
// try to support both APIs.
if (GetVersionEx((LPOSVERSIONINFO)&info) == 0)
return llvm::VersionTuple();
#pragma warning(pop)
return llvm::VersionTuple(info.dwMajorVersion, info.dwMinorVersion,
info.wServicePackMajor);
}
bool HostInfoWindows::GetOSBuildString(std::string &s) {
s.clear();
llvm::VersionTuple version = GetOSVersion();
if (version.empty())
return false;
llvm::raw_string_ostream stream(s);
stream << "Windows NT " << version.getAsString();
return true;
}
bool HostInfoWindows::GetOSKernelDescription(std::string &s) {
return GetOSBuildString(s);
}
bool HostInfoWindows::GetHostname(std::string &s) {
wchar_t buffer[MAX_COMPUTERNAME_LENGTH + 1];
DWORD dwSize = MAX_COMPUTERNAME_LENGTH + 1;
if (!::GetComputerNameW(buffer, &dwSize))
return false;
return llvm::convertWideToUTF8(buffer, s);
}
FileSpec HostInfoWindows::GetProgramFileSpec() {
static llvm::once_flag g_once_flag;
llvm::call_once(g_once_flag, []() {
std::vector<wchar_t> buffer(PATH_MAX);
::GetModuleFileNameW(NULL, buffer.data(), buffer.size());
std::string path;
llvm::convertWideToUTF8(buffer.data(), path);
m_program_filespec.SetFile(path, FileSpec::Style::native);
});
return m_program_filespec;
}
FileSpec HostInfoWindows::GetDefaultShell() {
// Try to retrieve ComSpec from the environment. On the rare occasion
// that it fails, try a well-known path for ComSpec instead.
std::string shell;
if (GetEnvironmentVar("ComSpec", shell))
return FileSpec(shell);
return FileSpec("C:\\Windows\\system32\\cmd.exe");
}
bool HostInfoWindows::GetEnvironmentVar(const std::string &var_name,
std::string &var) {
std::wstring wvar_name;
if (!llvm::ConvertUTF8toWide(var_name, wvar_name))
return false;
if (const wchar_t *wvar = _wgetenv(wvar_name.c_str()))
return llvm::convertWideToUTF8(wvar, var);
return false;
}
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