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Export of internal Abseil changes

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990253454819ce26ff1dda9ab4bbc145b61d01e4 by Xiaoyi Zhang <zhangxy@google.com>:

Import github PR https://github.com/abseil/abseil-cpp/pull/645

PiperOrigin-RevId: 303119797

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5ac845cb7929b7d1eaf59a309afd811db5001175 by Abseil Team <absl-team@google.com>:

Fix internal exception spec compatibility error

PiperOrigin-RevId: 303104081

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3290595dd866eecab3c7044e2e3ca0adb74f1bf5 by Gennadiy Rozental <rogeeff@google.com>:

Use FlagValue<T> to represent the value of a flag. Place it directly after
FlagImpl and use a computed offset refer to it.

The offset is computed based on the assumption that the `value_` data member
is placed directly after the impl_ data member in Flag<T>.

This change will allow us to migrate to `T`-specific storage in the generic case.

This change decreases the overhead for int flags by 32 bytes.

PiperOrigin-RevId: 303038099

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f2b37722cd7a6d3a60ef9713f0d2bbff56f3ddbf by Derek Mauro <dmauro@google.com>:

Minor correctness fix for an ABSL_HAVE_BUILTIN conditional

PiperOrigin-RevId: 302980666

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39c079a6141ae1c5728af8bf33a39c8aff9deb9f by Abseil Team <absl-team@google.com>:

Use ABSL_HARDENING_ASSERT in b-tree and SwissTable iterators.

PiperOrigin-RevId: 302970075

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9668a044e080c789df32bcaa1ffb5100831cd9fa by Benjamin Barenblat <bbaren@google.com>:

Correct `add_subdirectory` line in CMake googletest support

Commit bcefbdcdf6 added support for building with CMake against a local googletest checkout, but I missed a line when constructing the diff. Change the `add_subdirectory` line to reference the correct directories.

PiperOrigin-RevId: 302947488

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0a3c10fabf80a43ca69ab8b1570030e55f2be741 by Andy Soffer <asoffer@google.com>:

Remove unused distribution format traits.

PiperOrigin-RevId: 302896176

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0478f2f6270e5ed64c0e28ec09556ca90b2d46a9 by Samuel Benzaquen <sbenza@google.com>:

Fix for CWG:2310.

PiperOrigin-RevId: 302734089

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3cb978dda5cae5905affdc0914dcc2d27671ed11 by Samuel Benzaquen <sbenza@google.com>:

Fix the Allocate/Deallocate functions to use the same underlying allocator type.

PiperOrigin-RevId: 302721804

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ae38d3984fb68b4e3ddc165fa8d5c24d5936be52 by Matthew Brown <matthewbr@google.com>:

Internal Change

PiperOrigin-RevId: 302717314

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7357cf7abd03cc60b6e82b5f28a8e34935c3b4dc by Andy Getzendanner <durandal@google.com>:

Fix typo: s/ABSL_HARDENED_ASSERT/ABSL_HARDENING_ASSERT/

PiperOrigin-RevId: 302532164
GitOrigin-RevId: 990253454819ce26ff1dda9ab4bbc145b61d01e4
Change-Id: Ie595a221c16e1e7e1255ad42e029b646c5f3e11d
This commit is contained in:
Abseil Team 2020-03-26 08:48:01 -07:00 • committed by Xiaoyi Zhang
parent 132d791b40
commit 79e0dc1151
29 changed files with 387 additions and 607 deletions
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7
absl/container/internal/container_memory.h
View file

@ -37,6 +37,9 @@ namespace absl {
ABSL_NAMESPACE_BEGIN
namespace container_internal {
template <size_t Alignment>
struct alignas(Alignment) AlignedType {};
// Allocates at least n bytes aligned to the specified alignment.
// Alignment must be a power of 2. It must be positive.
//
@ -48,7 +51,7 @@ template <size_t Alignment, class Alloc>
void* Allocate(Alloc* alloc, size_t n) {
static_assert(Alignment > 0, "");
assert(n && "n must be positive");
struct alignas(Alignment) M {};
using M = AlignedType<Alignment>;
using A = typename absl::allocator_traits<Alloc>::template rebind_alloc<M>;
using AT = typename absl::allocator_traits<Alloc>::template rebind_traits<M>;
A mem_alloc(*alloc);
@ -64,7 +67,7 @@ template <size_t Alignment, class Alloc>
void Deallocate(Alloc* alloc, void* p, size_t n) {
static_assert(Alignment > 0, "");
assert(n && "n must be positive");
struct alignas(Alignment) M {};
using M = AlignedType<Alignment>;
using A = typename absl::allocator_traits<Alloc>::template rebind_alloc<M>;
using AT = typename absl::allocator_traits<Alloc>::template rebind_traits<M>;
A mem_alloc(*alloc);