tvl-depot/absl/container/internal/hash_policy_testing.h
Abseil Team a4c3ffff11 Export of internal Abseil changes.
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ba4dd47492748bd630462eb68b7959037fc6a11a by Abseil Team <absl-team@google.com>:

Work around nvcc 9.0 compiler bug for open-source Tensorflow build.

With the current implementation, when I (unintentionally and transitively)
include absl/types/optional.h in a CUDA compilation unit, I get the following
nvcc error message:
  INFO: From Compiling tensorflow/core/kernels/crop_and_resize_op_gpu.cu.cc:
  external/com_google_absl/absl/types/optional.h: In member function 'void absl::optional_internal::optional_data_dtor_base<T, <anonymous> >::destruct()':
  external/com_google_absl/absl/types/optional.h:185:50: error: '__T0' was not declared in this scope
         data_.~T();

I've also seen similar compilation failures online, for flat_hash_map:
https://devtalk.nvidia.com/default/topic/1042599/nvcc-preprocessor-bug-causes-compilation-failure/

The bug is always around unnamed template parameters. Therefore, the workaround is to make them named.

PiperOrigin-RevId: 219208288

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dad2f40cb2e8d5017660985ef6fb57f3c3cdcc80 by CJ Johnson <johnsoncj@google.com>:

Adds internal macros for catching and throwing unknown exception types

PiperOrigin-RevId: 219207362

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0a9840328d2d86e8420b853435fdbf1f7a19d931 by Abseil Team <absl-team@google.com>:

Fix typo in mutex.h comments.

PiperOrigin-RevId: 219199397

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0d576dc7597564210bfdf91518075064756f0bf4 by Matt Calabrese <calabrese@google.com>:

Internal change.

PiperOrigin-RevId: 219185475

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66be156095571959fb19a76da8ad0b53ec37658e by Abseil Team <absl-team@google.com>:

Fix alignment conformance for VS 2017 >= 15.8 (fix #193)

PiperOrigin-RevId: 219129894

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a6e1825a12587945f8194677ccfdcaba6f7aad1d by Abseil Team <absl-team@google.com>:

Reapply PR #173

PiperOrigin-RevId: 219129361

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cf72ade4881b25acc6ccaea468f69793a0fdce32 by Abseil Team <absl-team@google.com>:

Update .gitignore

PiperOrigin-RevId: 219127495

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0537490c6348a2cb489abe15638928ac5aa6982a by Jon Cohen <cohenjon@google.com>:

Small refactor and reformat of error messages from the exception safety test framework.

PiperOrigin-RevId: 218927773

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4c556ca45fa25698ad12002a00c713aeceefab73 by CJ Johnson <johnsoncj@google.com>:

Updates the inlined vector swap tests to check for number of moves that took place if available

PiperOrigin-RevId: 218900777

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dcbfda0021a1e6dfa9586986b1269c06ec394053 by Mark Barolak <mbar@google.com>:

Add parens around calls to std::numeric_limits<>::min and
std::numeric_limits<>::max to prevent compilation errors on Windows platforms
where min and max are defined as macros.

PiperOrigin-RevId: 218888700
GitOrigin-RevId: ba4dd47492748bd630462eb68b7959037fc6a11a
Change-Id: I0e393958eb8cb501b85f6114979f6d4d86ed996c
2018-10-30 11:19:34 -04:00

178 lines
5 KiB
C++

// Copyright 2018 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
//
// http://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.
//
// Utilities to help tests verify that hash tables properly handle stateful
// allocators and hash functions.
#ifndef ABSL_CONTAINER_INTERNAL_HASH_POLICY_TESTING_H_
#define ABSL_CONTAINER_INTERNAL_HASH_POLICY_TESTING_H_
#include <cstdlib>
#include <limits>
#include <memory>
#include <ostream>
#include <type_traits>
#include <utility>
#include <vector>
#include "absl/hash/hash.h"
#include "absl/strings/string_view.h"
namespace absl {
namespace container_internal {
namespace hash_testing_internal {
template <class Derived>
struct WithId {
WithId() : id_(next_id<Derived>()) {}
WithId(const WithId& that) : id_(that.id_) {}
WithId(WithId&& that) : id_(that.id_) { that.id_ = 0; }
WithId& operator=(const WithId& that) {
id_ = that.id_;
return *this;
}
WithId& operator=(WithId&& that) {
id_ = that.id_;
that.id_ = 0;
return *this;
}
size_t id() const { return id_; }
friend bool operator==(const WithId& a, const WithId& b) {
return a.id_ == b.id_;
}
friend bool operator!=(const WithId& a, const WithId& b) { return !(a == b); }
protected:
explicit WithId(size_t id) : id_(id) {}
private:
size_t id_;
template <class T>
static size_t next_id() {
// 0 is reserved for moved from state.
static size_t gId = 1;
return gId++;
}
};
} // namespace hash_testing_internal
struct NonStandardLayout {
NonStandardLayout() {}
explicit NonStandardLayout(std::string s) : value(std::move(s)) {}
virtual ~NonStandardLayout() {}
friend bool operator==(const NonStandardLayout& a,
const NonStandardLayout& b) {
return a.value == b.value;
}
friend bool operator!=(const NonStandardLayout& a,
const NonStandardLayout& b) {
return a.value != b.value;
}
template <typename H>
friend H AbslHashValue(H h, const NonStandardLayout& v) {
return H::combine(std::move(h), v.value);
}
std::string value;
};
struct StatefulTestingHash
: absl::container_internal::hash_testing_internal::WithId<
StatefulTestingHash> {
template <class T>
size_t operator()(const T& t) const {
return absl::Hash<T>{}(t);
}
};
struct StatefulTestingEqual
: absl::container_internal::hash_testing_internal::WithId<
StatefulTestingEqual> {
template <class T, class U>
bool operator()(const T& t, const U& u) const {
return t == u;
}
};
// It is expected that Alloc() == Alloc() for all allocators so we cannot use
// WithId base. We need to explicitly assign ids.
template <class T = int>
struct Alloc : std::allocator<T> {
using propagate_on_container_swap = std::true_type;
// Using old paradigm for this to ensure compatibility.
explicit Alloc(size_t id = 0) : id_(id) {}
Alloc(const Alloc&) = default;
Alloc& operator=(const Alloc&) = default;
template <class U>
Alloc(const Alloc<U>& that) : std::allocator<T>(that), id_(that.id()) {}
template <class U>
struct rebind {
using other = Alloc<U>;
};
size_t id() const { return id_; }
friend bool operator==(const Alloc& a, const Alloc& b) {
return a.id_ == b.id_;
}
friend bool operator!=(const Alloc& a, const Alloc& b) { return !(a == b); }
private:
size_t id_ = (std::numeric_limits<size_t>::max)();
};
template <class Map>
auto items(const Map& m) -> std::vector<
std::pair<typename Map::key_type, typename Map::mapped_type>> {
using std::get;
std::vector<std::pair<typename Map::key_type, typename Map::mapped_type>> res;
res.reserve(m.size());
for (const auto& v : m) res.emplace_back(get<0>(v), get<1>(v));
return res;
}
template <class Set>
auto keys(const Set& s)
-> std::vector<typename std::decay<typename Set::key_type>::type> {
std::vector<typename std::decay<typename Set::key_type>::type> res;
res.reserve(s.size());
for (const auto& v : s) res.emplace_back(v);
return res;
}
} // namespace container_internal
} // namespace absl
// ABSL_UNORDERED_SUPPORTS_ALLOC_CTORS is false for glibcxx versions
// where the unordered containers are missing certain constructors that
// take allocator arguments. This test is defined ad-hoc for the platforms
// we care about (notably Crosstool 17) because libstdcxx's useless
// versioning scheme precludes a more principled solution.
#if defined(__GLIBCXX__) && __GLIBCXX__ <= 20140425
#define ABSL_UNORDERED_SUPPORTS_ALLOC_CTORS 0
#else
#define ABSL_UNORDERED_SUPPORTS_ALLOC_CTORS 1
#endif
#endif // ABSL_CONTAINER_INTERNAL_HASH_POLICY_TESTING_H_