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135 lines
3.9 KiB
C++
135 lines
3.9 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 was developed by Jeff Cohen and is distributed under the
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// University of Illinois Open Source 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 "Win32.h"
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#include <psapi.h>
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#include <malloc.h>
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#include <io.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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#else
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#pragma comment(lib, "psapi.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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namespace llvm {
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using namespace sys;
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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 in Process::GetPageSize to initialize the
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// static variable PageSize.
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inline unsigned GetPageSizeOnce() {
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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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return static_cast<unsigned>(info.dwPageSize);
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}
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unsigned
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Process::GetPageSize() {
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static const unsigned PageSize = GetPageSizeOnce();
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return PageSize;
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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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size_t
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Process::GetTotalMemoryUsage()
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{
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PROCESS_MEMORY_COUNTERS pmc;
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GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc));
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return pmc.PagefileUsage;
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}
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void
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Process::GetTimeUsage(
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TimeValue& elapsed, TimeValue& user_time, TimeValue& sys_time)
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{
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elapsed = TimeValue::now();
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uint64_t ProcCreate, ProcExit, KernelTime, UserTime;
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GetProcessTimes(GetCurrentProcess(), (FILETIME*)&ProcCreate,
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(FILETIME*)&ProcExit, (FILETIME*)&KernelTime,
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(FILETIME*)&UserTime);
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// FILETIME's are # of 100 nanosecond ticks (1/10th of a microsecond)
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user_time.seconds( UserTime / 10000000 );
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user_time.nanoseconds( unsigned(UserTime % 10000000) * 100 );
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sys_time.seconds( KernelTime / 10000000 );
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sys_time.nanoseconds( unsigned(KernelTime % 10000000) * 100 );
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}
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int Process::GetCurrentUserId()
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{
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return 65536;
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}
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int Process::GetCurrentGroupId()
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{
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return 65536;
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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 item
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// does what's necessary to prevent their generation.
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void Process::PreventCoreFiles() {
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// Windows doesn't do core files, but it does do modal pop-up message
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// boxes. As this method is used by bugpoint, preventing these pop-ups
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// is the moral equivalent of suppressing core files.
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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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bool Process::StandardInIsUserInput() {
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return GetFileType((HANDLE)_get_osfhandle(0)) == FILE_TYPE_CHAR;
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}
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bool Process::StandardOutIsDisplayed() {
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return GetFileType((HANDLE)_get_osfhandle(1)) == FILE_TYPE_CHAR;
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}
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bool Process::StandardErrIsDisplayed() {
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return GetFileType((HANDLE)_get_osfhandle(2)) == FILE_TYPE_CHAR;
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}
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}
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