The-OpenROAD-Project_OpenSTA/util/MachineWin32.cc

// OpenSTA, Static Timing Analyzer
// Copyright (c) 2025, Parallax Software, Inc.
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
// 
// The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software.
// 
// Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 
// This notice may not be removed or altered from any source distribution.

#include "Machine.hh"

#include <cstdarg>
#include <cstdio>
#include <windows.h> // GetSystemInfo

namespace sta {

// Windows returns -1 if the string does not fit rather than the
// required string length as the standard specifies.
int
vsnprint(char *str,
         size_t size,
         const char *fmt,
         const va_list args)
{
  // Copy args before using them because consumption is destructive.
  va_list args_copy1;
  va_copy(args_copy1, args);
  int length = vsnprintf(str, size, fmt, args);

  while (length < 0) {
    size *= 2;
    char *buffer = new char[size];
    va_list args_copy2;
    va_copy(args_copy2, args_copy1);
    length = vsnprintf(buffer, size, fmt, args_copy2);
    delete [] buffer;
  }
  return length;
}

int
vasprintf(char **str,
          const char *fmt,
          va_list args)
{
  size_t size = 1024;
  for (;;) {
    size *= 2;
    char *buffer = new char[size];
    // Copy args before using them because consumption is destructive.
    va_list args_copy2;
    va_copy(args_copy2, args);
    int length = vsnprintf(buffer, size, fmt, args_copy2);
    if (length >= 0) {
      *str = buffer;
      return length;
    }
    delete[] buffer;
  }
}

int
processorCount()
{
  return 1;
}

void
initElapsedTime()
{
}

double
elapsedRunTime()
{
  return 0.0;
}

double
userRunTime()
{
  return 0.0;
}

double
systemRunTime()
{
  return 0.0;
}

size_t
memoryUsage()
{
  return 0;
}

} // namespace sta