56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
// Copyright 2017 The Abseil Authors.
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//
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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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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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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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// -----------------------------------------------------------------------------
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// File: seed_gen_exception.h
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// -----------------------------------------------------------------------------
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//
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// This header defines an exception class which may be thrown if unpredictable
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// events prevent the derivation of suitable seed-material for constructing a
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// bit generator conforming to [rand.req.urng] (eg. entropy cannot be read from
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// /dev/urandom on a Unix-based system).
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//
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// Note: if exceptions are disabled, `std::terminate()` is called instead.
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#ifndef ABSL_RANDOM_SEED_GEN_EXCEPTION_H_
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#define ABSL_RANDOM_SEED_GEN_EXCEPTION_H_
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#include <exception>
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#include "absl/base/config.h"
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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//------------------------------------------------------------------------------
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// SeedGenException
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//------------------------------------------------------------------------------
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class SeedGenException : public std::exception {
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public:
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SeedGenException() = default;
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~SeedGenException() override;
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const char* what() const noexcept override;
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};
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namespace random_internal {
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// throw delegator
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[[noreturn]] void ThrowSeedGenException();
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} // namespace random_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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#endif // ABSL_RANDOM_SEED_GEN_EXCEPTION_H_
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