Process.cpp   [plain text]

//===-- Process.cpp - Implement OS Process Concept --------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//  This header file implements the operating system Process concept.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/Process.h"
#include "llvm/Config/config.h"
#include <cstdlib>

namespace llvm {
using namespace sys;

//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only TRULY operating system
//===          independent code.
//===----------------------------------------------------------------------===//

unsigned llvm::sys::Process::GetRandomNumber() {
#if defined(HAVE_ARC4RANDOM)
  return arc4random();
#else
  static int x = (::srand(::time(NULL)), 0);
  return ::rand();
#endif
}

}

// Include the platform-specific parts of this class.
#ifdef LLVM_ON_UNIX
#include "Unix/Process.inc"
#endif
#ifdef LLVM_ON_WIN32
#include "Windows/Process.inc"
#endif