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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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34
absl/synchronization/internal/waiter.cc
View file

@ -368,31 +368,29 @@ class Waiter::WinHelper {
return reinterpret_cast<CONDITION_VARIABLE *>(&w->cv_storage_);
}
static_assert(sizeof(SRWLOCK) == sizeof(Waiter::SRWLockStorage),
"SRWLockStorage does not have the same size as SRWLOCK");
static_assert(
alignof(SRWLOCK) == alignof(Waiter::SRWLockStorage),
"SRWLockStorage does not have the same alignment as SRWLOCK");
static_assert(sizeof(SRWLOCK) == sizeof(void *),
"`mu_storage_` does not have the same size as SRWLOCK");
static_assert(alignof(SRWLOCK) == alignof(void *),
"`mu_storage_` does not have the same alignment as SRWLOCK");
static_assert(sizeof(CONDITION_VARIABLE) ==
sizeof(Waiter::ConditionVariableStorage),
"ABSL_CONDITION_VARIABLE_STORAGE does not have the same size "
"as CONDITION_VARIABLE");
static_assert(alignof(CONDITION_VARIABLE) ==
alignof(Waiter::ConditionVariableStorage),
"ConditionVariableStorage does not have the same "
"alignment as CONDITION_VARIABLE");
static_assert(sizeof(CONDITION_VARIABLE) == sizeof(void *),
"`ABSL_CONDITION_VARIABLE_STORAGE` does not have the same size "
"as `CONDITION_VARIABLE`");
static_assert(
alignof(CONDITION_VARIABLE) == alignof(void *),
"`cv_storage_` does not have the same alignment as `CONDITION_VARIABLE`");
// The SRWLOCK and CONDITION_VARIABLE types must be trivially constructible
// and destructible because we never call their constructors or destructors.
static_assert(std::is_trivially_constructible<SRWLOCK>::value,
"The SRWLOCK type must be trivially constructible");
static_assert(std::is_trivially_constructible<CONDITION_VARIABLE>::value,
"The CONDITION_VARIABLE type must be trivially constructible");
"The `SRWLOCK` type must be trivially constructible");
static_assert(
std::is_trivially_constructible<CONDITION_VARIABLE>::value,
"The `CONDITION_VARIABLE` type must be trivially constructible");
static_assert(std::is_trivially_destructible<SRWLOCK>::value,
"The SRWLOCK type must be trivially destructible");
"The `SRWLOCK` type must be trivially destructible");
static_assert(std::is_trivially_destructible<CONDITION_VARIABLE>::value,
"The CONDITION_VARIABLE type must be trivially destructible");
"The `CONDITION_VARIABLE` type must be trivially destructible");
};
class LockHolder {