src/starboard/shared/win32/system_get_random_uint64.cc

// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "starboard/system.h"

#include <windows.h>

#include "starboard/log.h"
#include "starboard/time.h"

uint64_t SbSystemGetRandomUInt64() {
  // TODO: This is DEFINITELY not cryptographically secure.
  static bool initialized = false;
  if (!initialized) {
    srand(GetTickCount());
    initialized = true;
  }
  return (static_cast<uint64_t>(std::rand()) << 32) | rand();
}