hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "random.h"
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#include <tensorflow/core/platform/types.h>
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#include <random>
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namespace tensorflow {
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namespace random {
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namespace {
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std::mt19937_64* InitRngWithRandomSeed() {
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std::random_device device("/dev/urandom");
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return new std::mt19937_64(device());
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}
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std::mt19937_64 InitRngWithDefaultSeed() {
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return std::mt19937_64();
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}
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} // anonymous namespace
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uint64 New64() {
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static std::mt19937_64* rng = InitRngWithRandomSeed();
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// static mutex mu(LINKER_INITIALIZED);
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// mutex_lock l(mu);
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return (*rng)();
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}
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uint64 New64DefaultSeed() {
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static std::mt19937_64 rng = InitRngWithDefaultSeed();
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// static mutex mu(LINKER_INITIALIZED);
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// mutex_lock l(mu);
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return rng();
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}
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} // namespace random
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} // namespace tensorflow
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