2019-06-21 22:11:42 +02:00
|
|
|
// 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: distributions.h
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// This header defines functions representing distributions, which you use in
|
|
|
|
// combination with an Abseil random bit generator to produce random values
|
|
|
|
// according to the rules of that distribution.
|
|
|
|
//
|
|
|
|
// The Abseil random library defines the following distributions within this
|
|
|
|
// file:
|
|
|
|
//
|
|
|
|
// * `absl::Uniform` for uniform (constant) distributions having constant
|
|
|
|
// probability
|
|
|
|
// * `absl::Bernoulli` for discrete distributions having exactly two outcomes
|
|
|
|
// * `absl::Beta` for continuous distributions parameterized through two
|
|
|
|
// free parameters
|
|
|
|
// * `absl::Exponential` for discrete distributions of events occurring
|
|
|
|
// continuously and independently at a constant average rate
|
|
|
|
// * `absl::Gaussian` (also known as "normal distributions") for continuous
|
|
|
|
// distributions using an associated quadratic function
|
|
|
|
// * `absl::LogUniform` for continuous uniform distributions where the log
|
|
|
|
// to the given base of all values is uniform
|
|
|
|
// * `absl::Poisson` for discrete probability distributions that express the
|
|
|
|
// probability of a given number of events occurring within a fixed interval
|
|
|
|
// * `absl::Zipf` for discrete probability distributions commonly used for
|
|
|
|
// modelling of rare events
|
|
|
|
//
|
|
|
|
// Prefer use of these distribution function classes over manual construction of
|
|
|
|
// your own distribution classes, as it allows library maintainers greater
|
|
|
|
// flexibility to change the underlying implementation in the future.
|
|
|
|
|
|
|
|
#ifndef ABSL_RANDOM_DISTRIBUTIONS_H_
|
|
|
|
#define ABSL_RANDOM_DISTRIBUTIONS_H_
|
|
|
|
|
|
|
|
#include <algorithm>
|
|
|
|
#include <cmath>
|
|
|
|
#include <limits>
|
|
|
|
#include <random>
|
|
|
|
#include <type_traits>
|
|
|
|
|
|
|
|
#include "absl/base/internal/inline_variable.h"
|
|
|
|
#include "absl/random/bernoulli_distribution.h"
|
|
|
|
#include "absl/random/beta_distribution.h"
|
|
|
|
#include "absl/random/exponential_distribution.h"
|
|
|
|
#include "absl/random/gaussian_distribution.h"
|
2020-06-17 15:53:10 +02:00
|
|
|
#include "absl/random/internal/distribution_caller.h" // IWYU pragma: export
|
2019-06-21 22:11:42 +02:00
|
|
|
#include "absl/random/internal/uniform_helper.h" // IWYU pragma: export
|
|
|
|
#include "absl/random/log_uniform_int_distribution.h"
|
|
|
|
#include "absl/random/poisson_distribution.h"
|
|
|
|
#include "absl/random/uniform_int_distribution.h"
|
|
|
|
#include "absl/random/uniform_real_distribution.h"
|
|
|
|
#include "absl/random/zipf_distribution.h"
|
|
|
|
|
|
|
|
namespace absl {
|
2019-12-12 19:36:03 +01:00
|
|
|
ABSL_NAMESPACE_BEGIN
|
2019-06-21 22:11:42 +02:00
|
|
|
|
2019-08-23 20:38:04 +02:00
|
|
|
ABSL_INTERNAL_INLINE_CONSTEXPR(IntervalClosedClosedTag, IntervalClosedClosed,
|
|
|
|
{});
|
|
|
|
ABSL_INTERNAL_INLINE_CONSTEXPR(IntervalClosedClosedTag, IntervalClosed, {});
|
|
|
|
ABSL_INTERNAL_INLINE_CONSTEXPR(IntervalClosedOpenTag, IntervalClosedOpen, {});
|
|
|
|
ABSL_INTERNAL_INLINE_CONSTEXPR(IntervalOpenOpenTag, IntervalOpenOpen, {});
|
|
|
|
ABSL_INTERNAL_INLINE_CONSTEXPR(IntervalOpenOpenTag, IntervalOpen, {});
|
|
|
|
ABSL_INTERNAL_INLINE_CONSTEXPR(IntervalOpenClosedTag, IntervalOpenClosed, {});
|
2019-06-21 22:11:42 +02:00
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::Uniform<T>(tag, bitgen, lo, hi)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// `absl::Uniform()` produces random values of type `T` uniformly distributed in
|
|
|
|
// a defined interval {lo, hi}. The interval `tag` defines the type of interval
|
|
|
|
// which should be one of the following possible values:
|
|
|
|
//
|
|
|
|
// * `absl::IntervalOpenOpen`
|
|
|
|
// * `absl::IntervalOpenClosed`
|
|
|
|
// * `absl::IntervalClosedOpen`
|
|
|
|
// * `absl::IntervalClosedClosed`
|
|
|
|
//
|
|
|
|
// where "open" refers to an exclusive value (excluded) from the output, while
|
|
|
|
// "closed" refers to an inclusive value (included) from the output.
|
|
|
|
//
|
|
|
|
// In the absence of an explicit return type `T`, `absl::Uniform()` will deduce
|
|
|
|
// the return type based on the provided endpoint arguments {A lo, B hi}.
|
|
|
|
// Given these endpoints, one of {A, B} will be chosen as the return type, if
|
|
|
|
// a type can be implicitly converted into the other in a lossless way. The
|
2019-09-30 20:24:41 +02:00
|
|
|
// lack of any such implicit conversion between {A, B} will produce a
|
2019-06-21 22:11:42 +02:00
|
|
|
// compile-time error
|
|
|
|
//
|
|
|
|
// See https://en.wikipedia.org/wiki/Uniform_distribution_(continuous)
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
//
|
|
|
|
// // Produce a random float value between 0.0 and 1.0, inclusive
|
|
|
|
// auto x = absl::Uniform(absl::IntervalClosedClosed, bitgen, 0.0f, 1.0f);
|
|
|
|
//
|
|
|
|
// // The most common interval of `absl::IntervalClosedOpen` is available by
|
|
|
|
// // default:
|
|
|
|
//
|
|
|
|
// auto x = absl::Uniform(bitgen, 0.0f, 1.0f);
|
|
|
|
//
|
|
|
|
// // Return-types are typically inferred from the arguments, however callers
|
|
|
|
// // can optionally provide an explicit return-type to the template.
|
|
|
|
//
|
|
|
|
// auto x = absl::Uniform<float>(bitgen, 0, 1);
|
|
|
|
//
|
|
|
|
template <typename R = void, typename TagType, typename URBG>
|
|
|
|
typename absl::enable_if_t<!std::is_same<R, void>::value, R> //
|
|
|
|
Uniform(TagType tag,
|
|
|
|
URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
R lo, R hi) {
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
using distribution_t = random_internal::UniformDistributionWrapper<R>;
|
|
|
|
|
|
|
|
auto a = random_internal::uniform_lower_bound(tag, lo, hi);
|
|
|
|
auto b = random_internal::uniform_upper_bound(tag, lo, hi);
|
|
|
|
if (a > b) return a;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, tag, lo, hi);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// absl::Uniform<T>(bitgen, lo, hi)
|
|
|
|
//
|
|
|
|
// Overload of `Uniform()` using the default closed-open interval of [lo, hi),
|
|
|
|
// and returning values of type `T`
|
|
|
|
template <typename R = void, typename URBG>
|
|
|
|
typename absl::enable_if_t<!std::is_same<R, void>::value, R> //
|
|
|
|
Uniform(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
R lo, R hi) {
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
using distribution_t = random_internal::UniformDistributionWrapper<R>;
|
|
|
|
|
|
|
|
constexpr auto tag = absl::IntervalClosedOpen;
|
|
|
|
auto a = random_internal::uniform_lower_bound(tag, lo, hi);
|
|
|
|
auto b = random_internal::uniform_upper_bound(tag, lo, hi);
|
|
|
|
if (a > b) return a;
|
2019-06-21 22:11:42 +02:00
|
|
|
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, lo, hi);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// absl::Uniform(tag, bitgen, lo, hi)
|
|
|
|
//
|
|
|
|
// Overload of `Uniform()` using different (but compatible) lo, hi types. Note
|
|
|
|
// that a compile-error will result if the return type cannot be deduced
|
|
|
|
// correctly from the passed types.
|
|
|
|
template <typename R = void, typename TagType, typename URBG, typename A,
|
|
|
|
typename B>
|
|
|
|
typename absl::enable_if_t<std::is_same<R, void>::value,
|
|
|
|
random_internal::uniform_inferred_return_t<A, B>>
|
|
|
|
Uniform(TagType tag,
|
|
|
|
URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
A lo, B hi) {
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using return_t = typename random_internal::uniform_inferred_return_t<A, B>;
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
using distribution_t = random_internal::UniformDistributionWrapper<return_t>;
|
2019-06-21 22:11:42 +02:00
|
|
|
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
auto a = random_internal::uniform_lower_bound<return_t>(tag, lo, hi);
|
|
|
|
auto b = random_internal::uniform_upper_bound<return_t>(tag, lo, hi);
|
|
|
|
if (a > b) return a;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, tag, static_cast<return_t>(lo),
|
2020-01-07 15:56:49 +01:00
|
|
|
static_cast<return_t>(hi));
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// absl::Uniform(bitgen, lo, hi)
|
|
|
|
//
|
|
|
|
// Overload of `Uniform()` using different (but compatible) lo, hi types and the
|
|
|
|
// default closed-open interval of [lo, hi). Note that a compile-error will
|
|
|
|
// result if the return type cannot be deduced correctly from the passed types.
|
|
|
|
template <typename R = void, typename URBG, typename A, typename B>
|
|
|
|
typename absl::enable_if_t<std::is_same<R, void>::value,
|
|
|
|
random_internal::uniform_inferred_return_t<A, B>>
|
|
|
|
Uniform(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
A lo, B hi) {
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using return_t = typename random_internal::uniform_inferred_return_t<A, B>;
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
using distribution_t = random_internal::UniformDistributionWrapper<return_t>;
|
|
|
|
|
|
|
|
constexpr auto tag = absl::IntervalClosedOpen;
|
|
|
|
auto a = random_internal::uniform_lower_bound<return_t>(tag, lo, hi);
|
|
|
|
auto b = random_internal::uniform_upper_bound<return_t>(tag, lo, hi);
|
|
|
|
if (a > b) return a;
|
2019-06-21 22:11:42 +02:00
|
|
|
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, static_cast<return_t>(lo),
|
2020-01-07 15:56:49 +01:00
|
|
|
static_cast<return_t>(hi));
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// absl::Uniform<unsigned T>(bitgen)
|
|
|
|
//
|
|
|
|
// Overload of Uniform() using the minimum and maximum values of a given type
|
|
|
|
// `T` (which must be unsigned), returning a value of type `unsigned T`
|
|
|
|
template <typename R, typename URBG>
|
|
|
|
typename absl::enable_if_t<!std::is_signed<R>::value, R> //
|
|
|
|
Uniform(URBG&& urbg) { // NOLINT(runtime/references)
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
using distribution_t = random_internal::UniformDistributionWrapper<R>;
|
2019-06-21 22:11:42 +02:00
|
|
|
|
Export of internal Abseil changes
--
f13697e3d33803f9667d124072da4f6dd8bfbf85 by Andy Soffer <asoffer@google.com>:
Addressing https://github.com/abseil/abseil-cpp/issues/314, fixing
CMakeLists.txt to reference ABSL_TEST_COPTS rather than ABSL_DEFAULT_COPTS.
ABSL_TEST_COPTS should be preferred for all tests so that they are configured consistently (moreover, CMake should agree with Bazel).
PiperOrigin-RevId: 274932312
--
c31c24a1fa6bb98136adf51ef37c0818ac366690 by Derek Mauro <dmauro@google.com>:
Silence MSAN in the stack consumption test utility
PiperOrigin-RevId: 274912950
--
2412913c05a246cd527cd4c31452f126e9129f3a by CJ Johnson <johnsoncj@google.com>:
Internal change
PiperOrigin-RevId: 274847103
--
75e984a93b5760873501b96ac3229ccfd955daf8 by Abseil Team <absl-team@google.com>:
Reformat BUILD file to current standards.
PiperOrigin-RevId: 274815392
--
a2780e085f1df1e4ca2c814a58c893d1b78a1d9c by Samuel Benzaquen <sbenza@google.com>:
Fix invalid result regarding leading zeros in the exponent.
PiperOrigin-RevId: 274808017
--
dd402e1cb5c4ebacb576372ae24bf289d729d323 by Samuel Benzaquen <sbenza@google.com>:
Make string_view's relational operators constexpr when possible.
PiperOrigin-RevId: 274807873
--
b4ef32565653a5da1cb8bb8d0351586d23519658 by Abseil Team <absl-team@google.com>:
Internal rework.
PiperOrigin-RevId: 274787159
--
70d81971c5914e6785b8e8a9d4f6eb2655dd62c0 by Gennadiy Rozental <rogeeff@google.com>:
Internal rework.
PiperOrigin-RevId: 274715557
--
14f5b0440e353b899cafaaa15b53e77f98f401af by Gennadiy Rozental <rogeeff@google.com>:
Make deprecated statements about ParseFLag/UnparseFlag consistent in a file.
PiperOrigin-RevId: 274668123
--
2e85adbdbb92612e4d750bc34fbca3333128b42d by Abseil Team <absl-team@google.com>:
Allow absl::c_equal to be used with arrays.
This is achieved by allowing container size computation for arrays.
PiperOrigin-RevId: 274426830
--
219719f107226d328773e6cec99fb473f5d3119c by Gennadiy Rozental <rogeeff@google.com>:
Release correct extension interfaces to support usage of absl::Time and absl::Duration as ABSL_FLAG
PiperOrigin-RevId: 274273788
--
47a77f93fda23b69b4a6bdbd506fe643c69a5579 by Gennadiy Rozental <rogeeff@google.com>:
Rework of flags persistence/FlagSaver internals.
PiperOrigin-RevId: 274225213
--
7807be3fe757c19e3b0c487298387683d4c9f5b3 by Abseil Team <absl-team@google.com>:
Switch reference to sdkddkver.h to lowercase, matching conventions used in the Windows SDK and other uses. This helps to avoid confusion on case-sensitive filesystems.
PiperOrigin-RevId: 274061877
--
561304090087a19f1d10f0475f564fe132ebf06e by Andy Getzendanner <durandal@google.com>:
Fix ABSL_WAITER_MODE detection for mingw
Import of https://github.com/abseil/abseil-cpp/pull/342
PiperOrigin-RevId: 274030071
--
9b3caac2cf202b9d440dfa1b4ffd538ac4bf715b by Derek Mauro <dmauro@google.com>:
Support using Abseil with the musl libc implementation.
Only test changes were required:
* Workaround for a bug in sigaltstack() on musl
* printf-style pointer formatting (%p) is implementation defined,
so verify StrFromat produces something compatible
* Fix detection of feenableexcept()
PiperOrigin-RevId: 274011666
--
73e8a938fc139e1cc8670d4513a445bacc855539 by Abseil Team <absl-team@google.com>:
nvcc workaround: explicitly specify the definition of node_handle::Base
PiperOrigin-RevId: 274011392
--
ab9cc6d042aca7d48e16c504ab10eab39433f4b2 by Andy Soffer <asoffer@google.com>:
Internal change
PiperOrigin-RevId: 273996318
--
e567c4979ca99c7e71821ec1523b8f5edd2c76ac by Abseil Team <absl-team@google.com>:
Introduce a type alias to work around an nvcc bug.
On the previous code, nvcc gets confused thinking that T has to be a parameter
pack, as IsDecomposable accepts one.
PiperOrigin-RevId: 273980472
--
105b6e6339b77a32f4432de05f44cd3f9c436751 by Eric Fiselier <ericwf@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 273955589
--
8feb87ff1d7e721fe094855e67c19539d5e582b7 by Abseil Team <absl-team@google.com>:
Avoid dual-exporting scheduling_mode.h
PiperOrigin-RevId: 273825112
--
fbc37854776d295dae98fb9d06a541f296daab95 by Andy Getzendanner <durandal@google.com>:
Fix ABSL_HAVE_ALARM check on mingw
Import of https://github.com/abseil/abseil-cpp/pull/341
PiperOrigin-RevId: 273817839
--
6aedcd63a735b9133e143b043744ba0a25407f6f by Andy Soffer <asoffer@google.com>:
Remove bit_gen_view.h now that all callers have been migrated to bit_gen_ref.h
Tested:
TGP - https://test.corp.google.com/ui#id=OCL:273762409:BASE:273743370:1570639020744:3001bcb5
PiperOrigin-RevId: 273810331
--
6573de24a66ba715c579f7f32b5c48a1d743c7f8 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 273589963
--
91c8c28b6dca26d98b39e8e06a8ed17c701ff793 by Abseil Team <absl-team@google.com>:
Update macro name for `ABSL_GUARDED_BY()` in the example section.
PiperOrigin-RevId: 273286983
--
0ff7d1a93d70f8ecd693f8dbb98b7a4a016ca2a4 by Abseil Team <absl-team@google.com>:
Fix potential integer overflow in the absl time library.
In absl::FromTM, the tm.tm_year is added by 1900 regarding that tm.tm_year represents the years since 1900. This change checks integer overflow before doing the arithmetic operation.
PiperOrigin-RevId: 273092952
--
b41c2a1310086807be09a833099ae6d4009f037c by Gennadiy Rozental <rogeeff@google.com>:
Correctly Unlock the global mutex in case of concurrent flag initialization.
Fixes #386
PiperOrigin-RevId: 272979749
--
c53103e71b2a6063af3c6d4ff68aa2d8f9ae9e06 by Abseil Team <absl-team@google.com>:
Try to become idle only when there is no wakeup.
Immediately after waking up (when futex wait returns), the current thread tries
to become idle doing bunch of memory loads and a branch. Problem is that there
is a good chance that we woke up due to a wakeup, especially for actively used
threads. For such wakeups, calling MaybeBecomeIdle() would be a waste of
cycles.
Instead, call MaybeBecomeIdle() only when we are sure there is no wakeup. For
idle threads the net effect should be the same. For active, threads this will
be more efficient.
Moreover, since MaybeBecomeIdle() is called before waiting on the futex, the
current thread will try to become idle before sleeping. This should result
in more accurate idleness and more efficient release of thread resources.
PiperOrigin-RevId: 272940381
GitOrigin-RevId: f13697e3d33803f9667d124072da4f6dd8bfbf85
Change-Id: I36de05aec12595183725652dd362dfa58fb095d0
2019-10-16 03:18:40 +02:00
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::Bernoulli(bitgen, p)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// `absl::Bernoulli` produces a random boolean value, with probability `p`
|
|
|
|
// (where 0.0 <= p <= 1.0) equaling `true`.
|
|
|
|
//
|
|
|
|
// Prefer `absl::Bernoulli` to produce boolean values over other alternatives
|
|
|
|
// such as comparing an `absl::Uniform()` value to a specific output.
|
|
|
|
//
|
|
|
|
// See https://en.wikipedia.org/wiki/Bernoulli_distribution
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
// ...
|
|
|
|
// if (absl::Bernoulli(bitgen, 1.0/3721.0)) {
|
|
|
|
// std::cout << "Asteroid field navigation successful.";
|
|
|
|
// }
|
|
|
|
//
|
|
|
|
template <typename URBG>
|
|
|
|
bool Bernoulli(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
double p) {
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using distribution_t = absl::bernoulli_distribution;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, p);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::Beta<T>(bitgen, alpha, beta)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// `absl::Beta` produces a floating point number distributed in the closed
|
|
|
|
// interval [0,1] and parameterized by two values `alpha` and `beta` as per a
|
|
|
|
// Beta distribution. `T` must be a floating point type, but may be inferred
|
|
|
|
// from the types of `alpha` and `beta`.
|
|
|
|
//
|
|
|
|
// See https://en.wikipedia.org/wiki/Beta_distribution.
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
// ...
|
|
|
|
// double sample = absl::Beta(bitgen, 3.0, 2.0);
|
|
|
|
//
|
|
|
|
template <typename RealType, typename URBG>
|
|
|
|
RealType Beta(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
RealType alpha, RealType beta) {
|
|
|
|
static_assert(
|
|
|
|
std::is_floating_point<RealType>::value,
|
|
|
|
"Template-argument 'RealType' must be a floating-point type, in "
|
|
|
|
"absl::Beta<RealType, URBG>(...)");
|
|
|
|
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using distribution_t = typename absl::beta_distribution<RealType>;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, alpha, beta);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::Exponential<T>(bitgen, lambda = 1)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
2020-02-04 23:18:00 +01:00
|
|
|
// `absl::Exponential` produces a floating point number representing the
|
|
|
|
// distance (time) between two consecutive events in a point process of events
|
|
|
|
// occurring continuously and independently at a constant average rate. `T` must
|
|
|
|
// be a floating point type, but may be inferred from the type of `lambda`.
|
2019-06-21 22:11:42 +02:00
|
|
|
//
|
|
|
|
// See https://en.wikipedia.org/wiki/Exponential_distribution.
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
// ...
|
|
|
|
// double call_length = absl::Exponential(bitgen, 7.0);
|
|
|
|
//
|
|
|
|
template <typename RealType, typename URBG>
|
|
|
|
RealType Exponential(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
RealType lambda = 1) {
|
|
|
|
static_assert(
|
|
|
|
std::is_floating_point<RealType>::value,
|
|
|
|
"Template-argument 'RealType' must be a floating-point type, in "
|
|
|
|
"absl::Exponential<RealType, URBG>(...)");
|
|
|
|
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using distribution_t = typename absl::exponential_distribution<RealType>;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, lambda);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::Gaussian<T>(bitgen, mean = 0, stddev = 1)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// `absl::Gaussian` produces a floating point number selected from the Gaussian
|
|
|
|
// (ie. "Normal") distribution. `T` must be a floating point type, but may be
|
|
|
|
// inferred from the types of `mean` and `stddev`.
|
|
|
|
//
|
|
|
|
// See https://en.wikipedia.org/wiki/Normal_distribution
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
// ...
|
|
|
|
// double giraffe_height = absl::Gaussian(bitgen, 16.3, 3.3);
|
|
|
|
//
|
|
|
|
template <typename RealType, typename URBG>
|
|
|
|
RealType Gaussian(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
RealType mean = 0, RealType stddev = 1) {
|
|
|
|
static_assert(
|
|
|
|
std::is_floating_point<RealType>::value,
|
|
|
|
"Template-argument 'RealType' must be a floating-point type, in "
|
|
|
|
"absl::Gaussian<RealType, URBG>(...)");
|
|
|
|
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using distribution_t = typename absl::gaussian_distribution<RealType>;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, mean, stddev);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::LogUniform<T>(bitgen, lo, hi, base = 2)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// `absl::LogUniform` produces random values distributed where the log to a
|
|
|
|
// given base of all values is uniform in a closed interval [lo, hi]. `T` must
|
|
|
|
// be an integral type, but may be inferred from the types of `lo` and `hi`.
|
|
|
|
//
|
|
|
|
// I.e., `LogUniform(0, n, b)` is uniformly distributed across buckets
|
|
|
|
// [0], [1, b-1], [b, b^2-1] .. [b^(k-1), (b^k)-1] .. [b^floor(log(n, b)), n]
|
|
|
|
// and is uniformly distributed within each bucket.
|
|
|
|
//
|
|
|
|
// The resulting probability density is inversely related to bucket size, though
|
|
|
|
// values in the final bucket may be more likely than previous values. (In the
|
|
|
|
// extreme case where n = b^i the final value will be tied with zero as the most
|
|
|
|
// probable result.
|
|
|
|
//
|
|
|
|
// If `lo` is nonzero then this distribution is shifted to the desired interval,
|
|
|
|
// so LogUniform(lo, hi, b) is equivalent to LogUniform(0, hi-lo, b)+lo.
|
|
|
|
//
|
|
|
|
// See http://ecolego.facilia.se/ecolego/show/Log-Uniform%20Distribution
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
// ...
|
|
|
|
// int v = absl::LogUniform(bitgen, 0, 1000);
|
|
|
|
//
|
|
|
|
template <typename IntType, typename URBG>
|
|
|
|
IntType LogUniform(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
IntType lo, IntType hi, IntType base = 2) {
|
|
|
|
static_assert(std::is_integral<IntType>::value,
|
|
|
|
"Template-argument 'IntType' must be an integral type, in "
|
|
|
|
"absl::LogUniform<IntType, URBG>(...)");
|
|
|
|
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using distribution_t = typename absl::log_uniform_int_distribution<IntType>;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, lo, hi, base);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::Poisson<T>(bitgen, mean = 1)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// `absl::Poisson` produces discrete probabilities for a given number of events
|
|
|
|
// occurring within a fixed interval within the closed interval [0, max]. `T`
|
|
|
|
// must be an integral type.
|
|
|
|
//
|
|
|
|
// See https://en.wikipedia.org/wiki/Poisson_distribution
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
// ...
|
|
|
|
// int requests_per_minute = absl::Poisson<int>(bitgen, 3.2);
|
|
|
|
//
|
|
|
|
template <typename IntType, typename URBG>
|
|
|
|
IntType Poisson(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
double mean = 1.0) {
|
|
|
|
static_assert(std::is_integral<IntType>::value,
|
|
|
|
"Template-argument 'IntType' must be an integral type, in "
|
|
|
|
"absl::Poisson<IntType, URBG>(...)");
|
|
|
|
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using distribution_t = typename absl::poisson_distribution<IntType>;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, mean);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// absl::Zipf<T>(bitgen, hi = max, q = 2, v = 1)
|
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//
|
|
|
|
// `absl::Zipf` produces discrete probabilities commonly used for modelling of
|
|
|
|
// rare events over the closed interval [0, hi]. The parameters `v` and `q`
|
|
|
|
// determine the skew of the distribution. `T` must be an integral type, but
|
|
|
|
// may be inferred from the type of `hi`.
|
|
|
|
//
|
|
|
|
// See http://mathworld.wolfram.com/ZipfDistribution.html
|
|
|
|
//
|
|
|
|
// Example:
|
|
|
|
//
|
|
|
|
// absl::BitGen bitgen;
|
|
|
|
// ...
|
|
|
|
// int term_rank = absl::Zipf<int>(bitgen);
|
|
|
|
//
|
|
|
|
template <typename IntType, typename URBG>
|
|
|
|
IntType Zipf(URBG&& urbg, // NOLINT(runtime/references)
|
|
|
|
IntType hi = (std::numeric_limits<IntType>::max)(), double q = 2.0,
|
|
|
|
double v = 1.0) {
|
|
|
|
static_assert(std::is_integral<IntType>::value,
|
|
|
|
"Template-argument 'IntType' must be an integral type, in "
|
|
|
|
"absl::Zipf<IntType, URBG>(...)");
|
|
|
|
|
|
|
|
using gen_t = absl::decay_t<URBG>;
|
|
|
|
using distribution_t = typename absl::zipf_distribution<IntType>;
|
|
|
|
|
|
|
|
return random_internal::DistributionCaller<gen_t>::template Call<
|
2020-03-26 16:48:01 +01:00
|
|
|
distribution_t>(&urbg, hi, q, v);
|
2019-06-21 22:11:42 +02:00
|
|
|
}
|
|
|
|
|
2019-12-12 19:36:03 +01:00
|
|
|
ABSL_NAMESPACE_END
|
2019-08-08 00:25:26 +02:00
|
|
|
} // namespace absl
|
2019-06-21 22:11:42 +02:00
|
|
|
|
|
|
|
#endif // ABSL_RANDOM_DISTRIBUTIONS_H_
|