1 //===- Win32/Process.cpp - Win32 Process Implementation ------- -*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file provides the Win32 specific implementation of the Process class.
12 //===----------------------------------------------------------------------===//
21 #if (HAVE_LIBPSAPI != 1)
22 #error "libpsapi.a should be present"
25 #pragma comment(lib, "psapi.lib")
28 //===----------------------------------------------------------------------===//
29 //=== WARNING: Implementation here must contain only Win32 specific code
30 //=== and must not be UNIX code
31 //===----------------------------------------------------------------------===//
34 // This ban should be lifted when MinGW 1.0+ has defined this value.
42 process::id_type self_process::get_id() {
43 return GetCurrentProcessId();
46 static TimeValue getTimeValueFromFILETIME(FILETIME Time) {
47 ULARGE_INTEGER TimeInteger;
48 TimeInteger.LowPart = Time.dwLowDateTime;
49 TimeInteger.HighPart = Time.dwHighDateTime;
51 // FILETIME's are # of 100 nanosecond ticks (1/10th of a microsecond)
53 static_cast<TimeValue::SecondsType>(TimeInteger.QuadPart / 10000000),
54 static_cast<TimeValue::NanoSecondsType>(
55 (TimeInteger.QuadPart % 10000000) * 100));
58 TimeValue self_process::get_user_time() const {
59 FILETIME ProcCreate, ProcExit, KernelTime, UserTime;
60 if (GetProcessTimes(GetCurrentProcess(), &ProcCreate, &ProcExit, &KernelTime,
64 return getTimeValueFromFILETIME(UserTime);
67 TimeValue self_process::get_system_time() const {
68 FILETIME ProcCreate, ProcExit, KernelTime, UserTime;
69 if (GetProcessTimes(GetCurrentProcess(), &ProcCreate, &ProcExit, &KernelTime,
73 return getTimeValueFromFILETIME(KernelTime);
76 // This function retrieves the page size using GetSystemInfo and is present
77 // solely so it can be called once to initialize the self_process member below.
78 static unsigned getPageSize() {
79 // NOTE: A 32-bit application running under WOW64 is supposed to use
80 // GetNativeSystemInfo. However, this interface is not present prior
81 // to Windows XP so to use it requires dynamic linking. It is not clear
82 // how this affects the reported page size, if at all. One could argue
83 // that LLVM ought to run as 64-bits on a 64-bit system, anyway.
86 // FIXME: FileOffset in MapViewOfFile() should be aligned to not dwPageSize,
87 // but dwAllocationGranularity.
88 return static_cast<unsigned>(info.dwPageSize);
91 // This constructor guaranteed to be run exactly once on a single thread, and
92 // sets up various process invariants that can be queried cheaply from then on.
93 self_process::self_process() : PageSize(getPageSize()) {
98 Process::GetMallocUsage()
101 hinfo._pentry = NULL;
105 while (_heapwalk(&hinfo) == _HEAPOK)
111 void Process::GetTimeUsage(TimeValue &elapsed, TimeValue &user_time,
112 TimeValue &sys_time) {
113 elapsed = TimeValue::now();
115 FILETIME ProcCreate, ProcExit, KernelTime, UserTime;
116 if (GetProcessTimes(GetCurrentProcess(), &ProcCreate, &ProcExit, &KernelTime,
120 user_time = getTimeValueFromFILETIME(UserTime);
121 sys_time = getTimeValueFromFILETIME(KernelTime);
124 // Some LLVM programs such as bugpoint produce core files as a normal part of
125 // their operation. To prevent the disk from filling up, this configuration
126 // item does what's necessary to prevent their generation.
127 void Process::PreventCoreFiles() {
128 // Windows does have the concept of core files, called minidumps. However,
129 // disabling minidumps for a particular application extends past the lifetime
130 // of that application, which is the incorrect behavior for this API.
131 // Additionally, the APIs require elevated privileges to disable and re-
132 // enable minidumps, which makes this untenable. For more information, see
133 // WerAddExcludedApplication and WerRemoveExcludedApplication (Vista and
136 // Windows also has modal pop-up message boxes. As this method is used by
137 // bugpoint, preventing these pop-ups is additionally important.
138 SetErrorMode(SEM_FAILCRITICALERRORS |
139 SEM_NOGPFAULTERRORBOX |
140 SEM_NOOPENFILEERRORBOX);
143 /// Returns the environment variable \arg Name's value as a string encoded in
144 /// UTF-8. \arg Name is assumed to be in UTF-8 encoding.
145 Optional<std::string> Process::GetEnv(StringRef Name) {
146 // Convert the argument to UTF-16 to pass it to _wgetenv().
147 SmallVector<wchar_t, 128> NameUTF16;
148 if (error_code ec = windows::UTF8ToUTF16(Name, NameUTF16))
151 // Environment variable can be encoded in non-UTF8 encoding, and there's no
152 // way to know what the encoding is. The only reliable way to look up
153 // multibyte environment variable is to use GetEnvironmentVariableW().
154 std::vector<wchar_t> Buf(16);
157 Size = GetEnvironmentVariableW(&NameUTF16[0], &Buf[0], Buf.size());
158 if (Size < Buf.size())
160 // Try again with larger buffer.
161 Buf.resize(Size + 1);
166 // Convert the result from UTF-16 to UTF-8.
167 SmallVector<char, 128> Res;
168 if (error_code ec = windows::UTF16ToUTF8(&Buf[0], Size, Res))
170 return std::string(&Res[0]);
173 bool Process::StandardInIsUserInput() {
174 return FileDescriptorIsDisplayed(0);
177 bool Process::StandardOutIsDisplayed() {
178 return FileDescriptorIsDisplayed(1);
181 bool Process::StandardErrIsDisplayed() {
182 return FileDescriptorIsDisplayed(2);
185 bool Process::FileDescriptorIsDisplayed(int fd) {
186 DWORD Mode; // Unused
187 return (GetConsoleMode((HANDLE)_get_osfhandle(fd), &Mode) != 0);
190 unsigned Process::StandardOutColumns() {
191 unsigned Columns = 0;
192 CONSOLE_SCREEN_BUFFER_INFO csbi;
193 if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi))
194 Columns = csbi.dwSize.X;
198 unsigned Process::StandardErrColumns() {
199 unsigned Columns = 0;
200 CONSOLE_SCREEN_BUFFER_INFO csbi;
201 if (GetConsoleScreenBufferInfo(GetStdHandle(STD_ERROR_HANDLE), &csbi))
202 Columns = csbi.dwSize.X;
206 // The terminal always has colors.
207 bool Process::FileDescriptorHasColors(int fd) {
208 return FileDescriptorIsDisplayed(fd);
211 bool Process::StandardOutHasColors() {
212 return FileDescriptorHasColors(1);
215 bool Process::StandardErrHasColors() {
216 return FileDescriptorHasColors(2);
226 :defaultColor(GetCurrentColor()) {}
227 static unsigned GetCurrentColor() {
228 CONSOLE_SCREEN_BUFFER_INFO csbi;
229 if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi))
230 return csbi.wAttributes;
233 WORD operator()() const { return defaultColor; }
236 DefaultColors defaultColors;
239 bool Process::ColorNeedsFlush() {
243 const char *Process::OutputBold(bool bg) {
244 WORD colors = DefaultColors::GetCurrentColor();
246 colors |= BACKGROUND_INTENSITY;
248 colors |= FOREGROUND_INTENSITY;
249 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), colors);
253 const char *Process::OutputColor(char code, bool bold, bool bg) {
256 colors = ((code&1) ? BACKGROUND_RED : 0) |
257 ((code&2) ? BACKGROUND_GREEN : 0 ) |
258 ((code&4) ? BACKGROUND_BLUE : 0);
260 colors |= BACKGROUND_INTENSITY;
262 colors = ((code&1) ? FOREGROUND_RED : 0) |
263 ((code&2) ? FOREGROUND_GREEN : 0 ) |
264 ((code&4) ? FOREGROUND_BLUE : 0);
266 colors |= FOREGROUND_INTENSITY;
268 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), colors);
272 static WORD GetConsoleTextAttribute(HANDLE hConsoleOutput) {
273 CONSOLE_SCREEN_BUFFER_INFO info;
274 GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &info);
275 return info.wAttributes;
278 const char *Process::OutputReverse() {
279 const WORD attributes
280 = GetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE));
282 const WORD foreground_mask = FOREGROUND_BLUE | FOREGROUND_GREEN |
283 FOREGROUND_RED | FOREGROUND_INTENSITY;
284 const WORD background_mask = BACKGROUND_BLUE | BACKGROUND_GREEN |
285 BACKGROUND_RED | BACKGROUND_INTENSITY;
286 const WORD color_mask = foreground_mask | background_mask;
288 WORD new_attributes =
289 ((attributes & FOREGROUND_BLUE )?BACKGROUND_BLUE :0) |
290 ((attributes & FOREGROUND_GREEN )?BACKGROUND_GREEN :0) |
291 ((attributes & FOREGROUND_RED )?BACKGROUND_RED :0) |
292 ((attributes & FOREGROUND_INTENSITY)?BACKGROUND_INTENSITY:0) |
293 ((attributes & BACKGROUND_BLUE )?FOREGROUND_BLUE :0) |
294 ((attributes & BACKGROUND_GREEN )?FOREGROUND_GREEN :0) |
295 ((attributes & BACKGROUND_RED )?FOREGROUND_RED :0) |
296 ((attributes & BACKGROUND_INTENSITY)?FOREGROUND_INTENSITY:0) |
298 new_attributes = (attributes & ~color_mask) | (new_attributes & color_mask);
300 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), new_attributes);
304 const char *Process::ResetColor() {
305 SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), defaultColors());