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39a2e35dbc
This is ever-so faster but more importantly matches what we have elsewhere. llvm-svn: 192137
361 lines
11 KiB
C++
361 lines
11 KiB
C++
//===- Win32/Process.cpp - Win32 Process Implementation ------- -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides the Win32 specific implementation of the Process class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Allocator.h"
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#include "Windows.h"
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#include <direct.h>
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#include <io.h>
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#include <malloc.h>
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#include <psapi.h>
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#include <shellapi.h>
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#ifdef __MINGW32__
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#if (HAVE_LIBPSAPI != 1)
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#error "libpsapi.a should be present"
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#endif
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#if (HAVE_LIBSHELL32 != 1)
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#error "libshell32.a should be present"
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#endif
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#else
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#pragma comment(lib, "psapi.lib")
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#pragma comment(lib, "shell32.lib")
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#endif
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only Win32 specific code
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//=== and must not be UNIX code
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//===----------------------------------------------------------------------===//
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#ifdef __MINGW32__
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// This ban should be lifted when MinGW 1.0+ has defined this value.
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# define _HEAPOK (-2)
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#endif
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using namespace llvm;
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using namespace sys;
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process::id_type self_process::get_id() {
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return GetCurrentProcessId();
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}
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static TimeValue getTimeValueFromFILETIME(FILETIME Time) {
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ULARGE_INTEGER TimeInteger;
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TimeInteger.LowPart = Time.dwLowDateTime;
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TimeInteger.HighPart = Time.dwHighDateTime;
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// FILETIME's are # of 100 nanosecond ticks (1/10th of a microsecond)
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return TimeValue(
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static_cast<TimeValue::SecondsType>(TimeInteger.QuadPart / 10000000),
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static_cast<TimeValue::NanoSecondsType>(
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(TimeInteger.QuadPart % 10000000) * 100));
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}
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TimeValue self_process::get_user_time() const {
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FILETIME ProcCreate, ProcExit, KernelTime, UserTime;
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if (GetProcessTimes(GetCurrentProcess(), &ProcCreate, &ProcExit, &KernelTime,
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&UserTime) == 0)
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return TimeValue();
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return getTimeValueFromFILETIME(UserTime);
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}
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TimeValue self_process::get_system_time() const {
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FILETIME ProcCreate, ProcExit, KernelTime, UserTime;
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if (GetProcessTimes(GetCurrentProcess(), &ProcCreate, &ProcExit, &KernelTime,
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&UserTime) == 0)
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return TimeValue();
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return getTimeValueFromFILETIME(KernelTime);
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}
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// This function retrieves the page size using GetSystemInfo and is present
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// solely so it can be called once to initialize the self_process member below.
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static unsigned getPageSize() {
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// NOTE: A 32-bit application running under WOW64 is supposed to use
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// GetNativeSystemInfo. However, this interface is not present prior
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// to Windows XP so to use it requires dynamic linking. It is not clear
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// how this affects the reported page size, if at all. One could argue
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// that LLVM ought to run as 64-bits on a 64-bit system, anyway.
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SYSTEM_INFO info;
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GetSystemInfo(&info);
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// FIXME: FileOffset in MapViewOfFile() should be aligned to not dwPageSize,
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// but dwAllocationGranularity.
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return static_cast<unsigned>(info.dwPageSize);
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}
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// This constructor guaranteed to be run exactly once on a single thread, and
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// sets up various process invariants that can be queried cheaply from then on.
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self_process::self_process() : PageSize(getPageSize()) {
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}
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size_t
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Process::GetMallocUsage()
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{
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_HEAPINFO hinfo;
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hinfo._pentry = NULL;
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size_t size = 0;
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while (_heapwalk(&hinfo) == _HEAPOK)
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size += hinfo._size;
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return size;
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}
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void Process::GetTimeUsage(TimeValue &elapsed, TimeValue &user_time,
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TimeValue &sys_time) {
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elapsed = TimeValue::now();
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FILETIME ProcCreate, ProcExit, KernelTime, UserTime;
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if (GetProcessTimes(GetCurrentProcess(), &ProcCreate, &ProcExit, &KernelTime,
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&UserTime) == 0)
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return;
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user_time = getTimeValueFromFILETIME(UserTime);
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sys_time = getTimeValueFromFILETIME(KernelTime);
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}
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// Some LLVM programs such as bugpoint produce core files as a normal part of
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// their operation. To prevent the disk from filling up, this configuration
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// item does what's necessary to prevent their generation.
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void Process::PreventCoreFiles() {
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// Windows does have the concept of core files, called minidumps. However,
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// disabling minidumps for a particular application extends past the lifetime
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// of that application, which is the incorrect behavior for this API.
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// Additionally, the APIs require elevated privileges to disable and re-
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// enable minidumps, which makes this untenable. For more information, see
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// WerAddExcludedApplication and WerRemoveExcludedApplication (Vista and
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// later).
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//
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// Windows also has modal pop-up message boxes. As this method is used by
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// bugpoint, preventing these pop-ups is additionally important.
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SetErrorMode(SEM_FAILCRITICALERRORS |
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SEM_NOGPFAULTERRORBOX |
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SEM_NOOPENFILEERRORBOX);
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}
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/// Returns the environment variable \arg Name's value as a string encoded in
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/// UTF-8. \arg Name is assumed to be in UTF-8 encoding.
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Optional<std::string> Process::GetEnv(StringRef Name) {
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// Convert the argument to UTF-16 to pass it to _wgetenv().
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SmallVector<wchar_t, 128> NameUTF16;
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if (error_code ec = windows::UTF8ToUTF16(Name, NameUTF16))
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return None;
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// Environment variable can be encoded in non-UTF8 encoding, and there's no
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// way to know what the encoding is. The only reliable way to look up
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// multibyte environment variable is to use GetEnvironmentVariableW().
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SmallVector<wchar_t, MAX_PATH> Buf;
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size_t Size = MAX_PATH;
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do {
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Buf.reserve(Size);
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Size =
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GetEnvironmentVariableW(NameUTF16.data(), Buf.data(), Buf.capacity());
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if (Size == 0)
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return None;
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// Try again with larger buffer.
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} while (Size > Buf.capacity());
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Buf.set_size(Size);
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// Convert the result from UTF-16 to UTF-8.
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SmallVector<char, MAX_PATH> Res;
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if (error_code ec = windows::UTF16ToUTF8(Buf.data(), Size, Res))
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return None;
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return std::string(Res.data());
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}
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error_code
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Process::GetArgumentVector(SmallVectorImpl<const char *> &Args,
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ArrayRef<const char *>,
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SpecificBumpPtrAllocator<char> &ArgAllocator) {
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int NewArgCount;
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error_code ec;
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wchar_t **UnicodeCommandLine = CommandLineToArgvW(GetCommandLineW(),
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&NewArgCount);
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if (!UnicodeCommandLine)
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return windows_error(::GetLastError());
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Args.reserve(NewArgCount);
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for (int i = 0; i < NewArgCount; ++i) {
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SmallVector<char, MAX_PATH> NewArgString;
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ec = windows::UTF16ToUTF8(UnicodeCommandLine[i],
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wcslen(UnicodeCommandLine[i]),
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NewArgString);
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if (ec)
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break;
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char *Buffer = ArgAllocator.Allocate(NewArgString.size() + 1);
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::memcpy(Buffer, NewArgString.data(), NewArgString.size() + 1);
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Args.push_back(Buffer);
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}
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LocalFree(UnicodeCommandLine);
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if (ec)
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return ec;
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return error_code::success();
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}
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bool Process::StandardInIsUserInput() {
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return FileDescriptorIsDisplayed(0);
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}
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bool Process::StandardOutIsDisplayed() {
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return FileDescriptorIsDisplayed(1);
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}
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bool Process::StandardErrIsDisplayed() {
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return FileDescriptorIsDisplayed(2);
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}
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bool Process::FileDescriptorIsDisplayed(int fd) {
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DWORD Mode; // Unused
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return (GetConsoleMode((HANDLE)_get_osfhandle(fd), &Mode) != 0);
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}
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unsigned Process::StandardOutColumns() {
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unsigned Columns = 0;
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi))
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Columns = csbi.dwSize.X;
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return Columns;
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}
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unsigned Process::StandardErrColumns() {
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unsigned Columns = 0;
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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if (GetConsoleScreenBufferInfo(GetStdHandle(STD_ERROR_HANDLE), &csbi))
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Columns = csbi.dwSize.X;
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return Columns;
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}
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// The terminal always has colors.
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bool Process::FileDescriptorHasColors(int fd) {
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return FileDescriptorIsDisplayed(fd);
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}
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bool Process::StandardOutHasColors() {
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return FileDescriptorHasColors(1);
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}
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bool Process::StandardErrHasColors() {
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return FileDescriptorHasColors(2);
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}
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static bool UseANSI = false;
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void Process::UseANSIEscapeCodes(bool enable) {
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UseANSI = enable;
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}
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namespace {
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class DefaultColors
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{
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private:
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WORD defaultColor;
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public:
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DefaultColors()
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:defaultColor(GetCurrentColor()) {}
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static unsigned GetCurrentColor() {
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CONSOLE_SCREEN_BUFFER_INFO csbi;
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if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi))
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return csbi.wAttributes;
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return 0;
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}
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WORD operator()() const { return defaultColor; }
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};
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DefaultColors defaultColors;
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}
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bool Process::ColorNeedsFlush() {
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return !UseANSI;
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}
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const char *Process::OutputBold(bool bg) {
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if (UseANSI) return "\033[1m";
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WORD colors = DefaultColors::GetCurrentColor();
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if (bg)
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colors |= BACKGROUND_INTENSITY;
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else
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colors |= FOREGROUND_INTENSITY;
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SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), colors);
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return 0;
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}
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const char *Process::OutputColor(char code, bool bold, bool bg) {
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if (UseANSI) return colorcodes[bg?1:0][bold?1:0][code&7];
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WORD colors;
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if (bg) {
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colors = ((code&1) ? BACKGROUND_RED : 0) |
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((code&2) ? BACKGROUND_GREEN : 0 ) |
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((code&4) ? BACKGROUND_BLUE : 0);
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if (bold)
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colors |= BACKGROUND_INTENSITY;
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} else {
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colors = ((code&1) ? FOREGROUND_RED : 0) |
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((code&2) ? FOREGROUND_GREEN : 0 ) |
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((code&4) ? FOREGROUND_BLUE : 0);
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if (bold)
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colors |= FOREGROUND_INTENSITY;
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}
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SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), colors);
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return 0;
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}
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static WORD GetConsoleTextAttribute(HANDLE hConsoleOutput) {
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CONSOLE_SCREEN_BUFFER_INFO info;
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GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &info);
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return info.wAttributes;
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}
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const char *Process::OutputReverse() {
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if (UseANSI) return "\033[7m";
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const WORD attributes
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= GetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE));
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const WORD foreground_mask = FOREGROUND_BLUE | FOREGROUND_GREEN |
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FOREGROUND_RED | FOREGROUND_INTENSITY;
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const WORD background_mask = BACKGROUND_BLUE | BACKGROUND_GREEN |
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BACKGROUND_RED | BACKGROUND_INTENSITY;
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const WORD color_mask = foreground_mask | background_mask;
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WORD new_attributes =
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((attributes & FOREGROUND_BLUE )?BACKGROUND_BLUE :0) |
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((attributes & FOREGROUND_GREEN )?BACKGROUND_GREEN :0) |
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((attributes & FOREGROUND_RED )?BACKGROUND_RED :0) |
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((attributes & FOREGROUND_INTENSITY)?BACKGROUND_INTENSITY:0) |
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((attributes & BACKGROUND_BLUE )?FOREGROUND_BLUE :0) |
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((attributes & BACKGROUND_GREEN )?FOREGROUND_GREEN :0) |
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((attributes & BACKGROUND_RED )?FOREGROUND_RED :0) |
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((attributes & BACKGROUND_INTENSITY)?FOREGROUND_INTENSITY:0) |
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0;
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new_attributes = (attributes & ~color_mask) | (new_attributes & color_mask);
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SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), new_attributes);
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return 0;
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}
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const char *Process::ResetColor() {
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if (UseANSI) return "\033[0m";
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SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), defaultColors());
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return 0;
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}
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