aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/restricted/abseil-cpp-tstring/y_absl/random/seed_gen_exception.h
blob: 7f9e3d40e285074595755dde17172d8d02043e5e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
// Copyright 2017 The Abseil Authors.
//
// 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
//
//      https://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.
//
// -----------------------------------------------------------------------------
// File: seed_gen_exception.h
// -----------------------------------------------------------------------------
//
// This header defines an exception class which may be thrown if unpredictable
// events prevent the derivation of suitable seed-material for constructing a
// bit generator conforming to [rand.req.urng] (eg. entropy cannot be read from
// /dev/urandom on a Unix-based system).
//
// Note: if exceptions are disabled, `std::terminate()` is called instead.

#ifndef Y_ABSL_RANDOM_SEED_GEN_EXCEPTION_H_
#define Y_ABSL_RANDOM_SEED_GEN_EXCEPTION_H_

#include <exception>

#include "y_absl/base/config.h"

namespace y_absl {
Y_ABSL_NAMESPACE_BEGIN

//------------------------------------------------------------------------------
// SeedGenException
//------------------------------------------------------------------------------
class SeedGenException : public std::exception {
 public:
  SeedGenException() = default;
  ~SeedGenException() override;
  const char* what() const noexcept override;
};

namespace random_internal {

// throw delegator
[[noreturn]] void ThrowSeedGenException();

}  // namespace random_internal
Y_ABSL_NAMESPACE_END
}  // namespace y_absl

#endif  // Y_ABSL_RANDOM_SEED_GEN_EXCEPTION_H_