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Export of internal Abseil changes

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00f5301405423005d9129935c05f20155536cc1a by CJ Johnson <johnsoncj@google.com>:

Removes usage of std::aligned_storage from Abseil implementation details

PiperOrigin-RevId: 296492301

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fc11d15f91764612fba080669d2381dc181df52b by Abseil Team <absl-team@google.com>:

Fix absl::bind_front documentation.

PiperOrigin-RevId: 296482945

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0164c595c129c46bf21ae74eba5399a1da5f140b by Gennadiy Rozental <rogeeff@google.com>:

Automated g4 rollback of changelist 296320700.

PiperOrigin-RevId: 296439968

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1eb295700758ca0894d872b2de7c675b4ad679af by Abseil Team <absl-team@google.com>:

Removes duplicate comments.

PiperOrigin-RevId: 296433214

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c30c01caae02d2fa4ef783d988de6bebb9757c39 by Derek Mauro <dmauro@google.com>:

Merge GitHub #621: Add RISCV support to GetProgramCounter()

Fixes #621

PiperOrigin-RevId: 296351174

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95d4498167596fd7543e025bdfe9a8da9e2ca3c8 by Abseil Team <absl-team@google.com>:

Automated g4 rollback of changelist 296320700.

PiperOrigin-RevId: 296348701

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b193f0543e0cec54dddb2ed51f45dc489c8d06d5 by Gennadiy Rozental <rogeeff@google.com>:

Change TryParse interface to return managed value.

In addition introduce companion StoreValue routine which consumes pointer to source value and stores the value inside of FlagImpl. In a follow up CL we will change StoreValue implementation to behave differently depending on "value storage kind".
We also rename default_src_ to default_value_.

PiperOrigin-RevId: 296320700

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57e942b485d12912a0a8d0d0b35fa2a62847020f by Derek Mauro <dmauro@google.com>:

Merge GitHub #622
 * Add missing #ifdef conditionals for ABSL_HAVE_VDSO_SUPPORT

PiperOrigin-RevId: 296272830
GitOrigin-RevId: 00f5301405423005d9129935c05f20155536cc1a
Change-Id: I1b05eeaf1280f95fb0a2c5f3654995a87c792893
This commit is contained in:
Abseil Team 2020-02-21 12:51:36 -08:00 • committed by CJ Johnson
parent 2a5633fc07
commit b69c7d880c
16 changed files with 131 additions and 135 deletions
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8
absl/strings/cord.cc
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@ -63,16 +63,16 @@ namespace {
// Type used with std::allocator for allocating and deallocating
// `CordRepExternal`. std::allocator is used because it opaquely handles the
// different new / delete overloads available on a given platform.
using ExternalAllocType =
absl::aligned_storage_t<absl::cord_internal::ExternalRepAlignment(),
absl::cord_internal::ExternalRepAlignment()>;
struct alignas(absl::cord_internal::ExternalRepAlignment()) ExternalAllocType {
unsigned char value[absl::cord_internal::ExternalRepAlignment()];
};
// Returns the number of objects to pass in to std::allocator<ExternalAllocType>
// allocate() and deallocate() to create enough room for `CordRepExternal` with
// `releaser_size` bytes on the end.
constexpr size_t GetExternalAllocNumObjects(size_t releaser_size) {
// Be sure to round up since `releaser_size` could be smaller than
// sizeof(ExternalAllocType)`.
// `sizeof(ExternalAllocType)`.
return (sizeof(CordRepExternal) + releaser_size + sizeof(ExternalAllocType) -
1) /
sizeof(ExternalAllocType);