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721d9aa060
* Implement GetMallocUsage to get usage of malloc heap * Implement GetMemoryUsage to get total memory usage of process * Implement GetTimeUsage to get elapsed/user/system time git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19055 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
2.7 KiB
C++
89 lines
2.7 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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//===----------------------------------------------------------------------===//
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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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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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void*
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uint64_t
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Process::GetMallocUsage()
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{
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#ifdef HAVE_MALLINFO
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struct mallinfo mi = ::mallinfo();
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return mi.uordblks;
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#warning Cannot get malloc info on this platform
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return 0;
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#endif
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}
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uint64_t
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Process::GetTotalMemoryUsage()
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{
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#ifdef HAVE_MALLINFO
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struct mallinfo mi = ::mallinfo();
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return mi.uordblks + mi.hblkhd
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#else
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#warning Cannot get total memory size on this platform
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return 0;
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#endif
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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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unsigned __int64 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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);
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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( (UserTime % 10000000) * 100 );
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sys_time.seconds( KernelTime / 10000000 );
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user_time.nanoseconds( (UserTime % 10000000) * 100 );
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}
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}
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// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
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