1/* Copyright 2015 The TensorFlow Authors. All Rights Reserved. 2 3Licensed under the Apache License, Version 2.0 (the "License"); 4you may not use this file except in compliance with the License. 5You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9Unless required by applicable law or agreed to in writing, software 10distributed under the License is distributed on an "AS IS" BASIS, 11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12See the License for the specific language governing permissions and 13limitations under the License. 14==============================================================================*/ 15 16#include "tensorflow/stream_executor/rng.h" 17 18#include "tensorflow/stream_executor/platform/logging.h" 19 20namespace perftools { 21namespace gputools { 22namespace rng { 23 24bool RngSupport::CheckSeed(const uint8 *seed, uint64 seed_bytes) { 25 CHECK(seed != nullptr); 26 27 if (seed_bytes < kMinSeedBytes) { 28 LOG(INFO) << "Insufficient RNG seed data specified: " << seed_bytes 29 << ". At least " << RngSupport::kMinSeedBytes 30 << " bytes are required."; 31 return false; 32 } 33 34 if (seed_bytes > kMaxSeedBytes) { 35 LOG(INFO) << "Too much RNG seed data specified: " << seed_bytes 36 << ". At most " << RngSupport::kMaxSeedBytes 37 << " bytes may be provided."; 38 return false; 39 } 40 41 return true; 42} 43 44#if defined(__APPLE__) || defined(__FreeBSD__) 45const int RngSupport::kMinSeedBytes; 46const int RngSupport::kMaxSeedBytes; 47#endif 48 49} // namespace rng 50} // namespace gputools 51} // namespace perftools 52