329c52c100
This PR changes the way we set the shlib directory helper. Instead of setting it while initializing the Host plugin, we register it when initializing the Python plugin. The motivation is that the current approach is incompatible with the dynamically linked script interpreters, as they will not have been loaded at the time the Host plugin is initialized. The downside of the new approach is that we set the helper after having initialized the Host plugin, which theoretically introduces a small window where someone could query the helper before it has been set. Fortunately the window is pretty small and limited to when we're initializing plugins, but it's less "pure" than what we had previously. That said, I think it balances out with removing the plugin include.
140 lines
4.1 KiB
C++
140 lines
4.1 KiB
C++
//===-- HostInfoWindows.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/windows.h"
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#include <objbase.h>
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#include <mutex>
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#include <optional>
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#include "lldb/Host/windows/HostInfoWindows.h"
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#include "lldb/Host/windows/PosixApi.h"
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#include "lldb/Utility/UserIDResolver.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/ConvertUTF.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Threading.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace lldb_private;
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namespace {
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class WindowsUserIDResolver : public UserIDResolver {
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protected:
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std::optional<std::string> DoGetUserName(id_t uid) override {
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return std::nullopt;
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}
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std::optional<std::string> DoGetGroupName(id_t gid) override {
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return std::nullopt;
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}
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};
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} // namespace
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FileSpec HostInfoWindows::m_program_filespec;
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void HostInfoWindows::Initialize() {
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::CoInitializeEx(nullptr, COINIT_MULTITHREADED);
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HostInfoBase::Initialize();
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}
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void HostInfoWindows::Terminate() {
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HostInfoBase::Terminate();
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::CoUninitialize();
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}
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size_t HostInfoWindows::GetPageSize() {
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SYSTEM_INFO systemInfo;
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GetNativeSystemInfo(&systemInfo);
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return systemInfo.dwPageSize;
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}
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llvm::VersionTuple HostInfoWindows::GetOSVersion() {
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OSVERSIONINFOEX info;
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ZeroMemory(&info, sizeof(OSVERSIONINFOEX));
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info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
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#pragma warning(push)
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#pragma warning(disable : 4996)
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// Starting with Microsoft SDK for Windows 8.1, this function is deprecated
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// in favor of the new Windows Version Helper APIs. Since we don't specify a
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// minimum SDK version, it's easier to simply disable the warning rather than
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// try to support both APIs.
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if (GetVersionEx((LPOSVERSIONINFO)&info) == 0)
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return llvm::VersionTuple();
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#pragma warning(pop)
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return llvm::VersionTuple(info.dwMajorVersion, info.dwMinorVersion,
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info.wServicePackMajor);
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}
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std::optional<std::string> HostInfoWindows::GetOSBuildString() {
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llvm::VersionTuple version = GetOSVersion();
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if (version.empty())
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return std::nullopt;
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return "Windows NT " + version.getAsString();
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}
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std::optional<std::string> HostInfoWindows::GetOSKernelDescription() {
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return GetOSBuildString();
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}
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bool HostInfoWindows::GetHostname(std::string &s) {
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wchar_t buffer[MAX_COMPUTERNAME_LENGTH + 1];
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DWORD dwSize = MAX_COMPUTERNAME_LENGTH + 1;
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if (!::GetComputerNameW(buffer, &dwSize))
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return false;
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// The conversion requires an empty string.
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s.clear();
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return llvm::convertWideToUTF8(buffer, s);
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}
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FileSpec HostInfoWindows::GetProgramFileSpec() {
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static llvm::once_flag g_once_flag;
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llvm::call_once(g_once_flag, []() {
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std::vector<wchar_t> buffer(PATH_MAX);
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::GetModuleFileNameW(NULL, buffer.data(), buffer.size());
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std::string path;
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llvm::convertWideToUTF8(buffer.data(), path);
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m_program_filespec.SetFile(path, FileSpec::Style::native);
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});
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return m_program_filespec;
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}
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FileSpec HostInfoWindows::GetDefaultShell() {
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// Try to retrieve ComSpec from the environment. On the rare occasion
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// that it fails, try a well-known path for ComSpec instead.
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std::string shell;
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if (GetEnvironmentVar("ComSpec", shell))
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return FileSpec(shell);
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return FileSpec("C:\\Windows\\system32\\cmd.exe");
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}
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bool HostInfoWindows::GetEnvironmentVar(const std::string &var_name,
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std::string &var) {
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std::wstring wvar_name;
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if (!llvm::ConvertUTF8toWide(var_name, wvar_name))
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return false;
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if (const wchar_t *wvar = _wgetenv(wvar_name.c_str()))
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return llvm::convertWideToUTF8(wvar, var);
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return false;
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}
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static llvm::ManagedStatic<WindowsUserIDResolver> g_user_id_resolver;
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UserIDResolver &HostInfoWindows::GetUserIDResolver() {
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return *g_user_id_resolver;
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}
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