LLDB mainline
HostInfoWindows.cpp
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1//===-- HostInfoWindows.cpp -----------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
10
11#include <objbase.h>
12
13#include <mutex>
14#include <optional>
15
19#include "llvm/ADT/SmallString.h"
20#include "llvm/Support/ConvertUTF.h"
21#include "llvm/Support/FileSystem.h"
22#include "llvm/Support/ManagedStatic.h"
23#include "llvm/Support/Path.h"
24#include "llvm/Support/Threading.h"
25#include "llvm/Support/raw_ostream.h"
26
27using namespace lldb_private;
28
29namespace {
30class WindowsUserIDResolver : public UserIDResolver {
31protected:
32 std::optional<std::string> DoGetUserName(id_t uid) override {
33 return std::nullopt;
34 }
35 std::optional<std::string> DoGetGroupName(id_t gid) override {
36 return std::nullopt;
37 }
38};
39} // namespace
40
42
44 ::CoInitializeEx(nullptr, COINIT_MULTITHREADED);
46}
47
50 ::CoUninitialize();
51}
52
54 SYSTEM_INFO systemInfo;
55 GetNativeSystemInfo(&systemInfo);
56 return systemInfo.dwPageSize;
57}
58
59llvm::VersionTuple HostInfoWindows::GetOSVersion() {
60 OSVERSIONINFOEX info;
61
62 ZeroMemory(&info, sizeof(OSVERSIONINFOEX));
63 info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
64#pragma warning(push)
65#pragma warning(disable : 4996)
66 // Starting with Microsoft SDK for Windows 8.1, this function is deprecated
67 // in favor of the new Windows Version Helper APIs. Since we don't specify a
68 // minimum SDK version, it's easier to simply disable the warning rather than
69 // try to support both APIs.
70 if (GetVersionEx((LPOSVERSIONINFO)&info) == 0)
71 return llvm::VersionTuple();
72#pragma warning(pop)
73
74 return llvm::VersionTuple(info.dwMajorVersion, info.dwMinorVersion,
75 info.wServicePackMajor);
76}
77
78std::optional<std::string> HostInfoWindows::GetOSBuildString() {
79 llvm::VersionTuple version = GetOSVersion();
80 if (version.empty())
81 return std::nullopt;
82
83 return "Windows NT " + version.getAsString();
84}
85
86std::optional<std::string> HostInfoWindows::GetOSKernelDescription() {
87 return GetOSBuildString();
88}
89
90bool HostInfoWindows::GetHostname(std::string &s) {
91 wchar_t buffer[MAX_COMPUTERNAME_LENGTH + 1];
92 DWORD dwSize = MAX_COMPUTERNAME_LENGTH + 1;
93 if (!::GetComputerNameW(buffer, &dwSize))
94 return false;
95
96 // The conversion requires an empty string.
97 s.clear();
98 return llvm::convertWideToUTF8(buffer, s);
99}
100
102 static llvm::once_flag g_once_flag;
103 llvm::call_once(g_once_flag, []() {
104 std::vector<wchar_t> buffer(PATH_MAX);
105 ::GetModuleFileNameW(NULL, buffer.data(), buffer.size());
106 std::string path;
107 llvm::convertWideToUTF8(buffer.data(), path);
108 m_program_filespec.SetFile(path, FileSpec::Style::native);
109 });
110 return m_program_filespec;
111}
112
114 // Try to retrieve ComSpec from the environment. On the rare occasion
115 // that it fails, try a well-known path for ComSpec instead.
116
117 std::string shell;
118 if (GetEnvironmentVar("ComSpec", shell))
119 return FileSpec(shell);
120
121 return FileSpec("C:\\Windows\\system32\\cmd.exe");
122}
123
124bool HostInfoWindows::GetEnvironmentVar(const std::string &var_name,
125 std::string &var) {
126 std::wstring wvar_name;
127 if (!llvm::ConvertUTF8toWide(var_name, wvar_name))
128 return false;
129
130 if (const wchar_t *wvar = _wgetenv(wvar_name.c_str()))
131 return llvm::convertWideToUTF8(wvar, var);
132 return false;
133}
134
135static llvm::ManagedStatic<WindowsUserIDResolver> g_user_id_resolver;
136
138 return *g_user_id_resolver;
139}
static llvm::ManagedStatic< PosixUserIDResolver > g_user_id_resolver
A file utility class.
Definition: FileSpec.h:56
void SetFile(llvm::StringRef path, Style style)
Change the file specified with a new path.
Definition: FileSpec.cpp:173
void(FileSpec &this_file) SharedLibraryDirectoryHelper
A helper function for determining the liblldb location.
Definition: HostInfoBase.h:45
static void Initialize(SharedLibraryDirectoryHelper *helper=nullptr)
static llvm::VersionTuple GetOSVersion()
static FileSpec GetProgramFileSpec()
static UserIDResolver & GetUserIDResolver()
static std::optional< std::string > GetOSBuildString()
static bool GetHostname(std::string &s)
static void Initialize(SharedLibraryDirectoryHelper *helper=nullptr)
static std::optional< std::string > GetOSKernelDescription()
static FileSpec m_program_filespec
static bool GetEnvironmentVar(const std::string &var_name, std::string &var)
An abstract interface for things that know how to map numeric user/group IDs into names.
virtual std::optional< std::string > DoGetGroupName(id_t gid)=0
virtual std::optional< std::string > DoGetUserName(id_t uid)=0
A class that represents a running process on the host machine.
#define PATH_MAX