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Export of internal Abseil changes

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--
3e6352709da9a529e608eabff862a12bfaecb587 by Gennadiy Rozental <rogeeff@google.com>:

Replace local copy of FastTypeId with one shared in absl/base/internal.

PiperOrigin-RevId: 304181357

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c89ea428f732226f4dceb508cd6ba3955a1e49e1 by Andy Getzendanner <durandal@google.com>:

Typo fix: add a missing colon.

PiperOrigin-RevId: 304064210

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de2ee7a96bdc7193ffcceb6a2fd6bf464955cbe7 by Samuel Benzaquen <sbenza@google.com>:

Reduce the overhead of the registration token by using an empty struct instead
of bool.

PiperOrigin-RevId: 304054311

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222f05d24fb1df7e815946543a7dc78847c83f92 by Derek Mauro <dmauro@google.com>:

Turn off hashtablez in opensource builds.

Hashtablez is an unsupported, internal-only feature for collecting
information about hashtable usage and performance. By turning it off
in builds where it is unsupported, we get just a little more performance.

PiperOrigin-RevId: 304035460
GitOrigin-RevId: 3e6352709da9a529e608eabff862a12bfaecb587
Change-Id: I0bfe9b5df808a7e35c154b39e6c80e68b0da2b70
This commit is contained in:
Abseil Team 2020-04-01 07:32:27 -07:00 • committed by Andy Getz
parent fba8a316c3
commit 62f05b1f57
11 changed files with 47 additions and 35 deletions
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1
absl/types/BUILD.bazel
View file

@ -35,6 +35,7 @@ cc_library(
":bad_any_cast",
"//absl/base:config",
"//absl/base:core_headers",
"//absl/base:fast_type_id",
"//absl/meta:type_traits",
"//absl/utility",
],

1
absl/types/CMakeLists.txt
View file

@ -24,6 +24,7 @@ absl_cc_library(
absl::bad_any_cast
absl::config
absl::core_headers
absl::fast_type_id
absl::type_traits
absl::utility
PUBLIC

25
absl/types/any.h
View file

@ -80,6 +80,7 @@ ABSL_NAMESPACE_END
#include <typeinfo>
#include <utility>
#include "absl/base/internal/fast_type_id.h"
#include "absl/base/macros.h"
#include "absl/meta/type_traits.h"
#include "absl/types/bad_any_cast.h"
@ -95,26 +96,6 @@ ABSL_NAMESPACE_END
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace any_internal {
template <typename Type>
struct TypeTag {
constexpr static char dummy_var = 0;
};
template <typename Type>
constexpr char TypeTag<Type>::dummy_var;
// FastTypeId<Type>() evaluates at compile/link-time to a unique pointer for the
// passed in type. These are meant to be good match for keys into maps or
// straight up comparisons.
template<typename Type>
constexpr inline const void* FastTypeId() {
return &TypeTag<Type>::dummy_var;
}
} // namespace any_internal
class any;
// swap()
@ -423,11 +404,11 @@ class any {
using NormalizedType =
typename std::remove_cv<typename std::remove_reference<T>::type>::type;
return any_internal::FastTypeId<NormalizedType>();
return base_internal::FastTypeId<NormalizedType>();
}
const void* GetObjTypeId() const {
return obj_ ? obj_->ObjTypeId() : any_internal::FastTypeId<void>();
return obj_ ? obj_->ObjTypeId() : base_internal::FastTypeId<void>();
}
// `absl::any` nonmember functions //