folly::test::Barrier Struct Reference

#include <Barrier.h>

Public Member Functions
	Barrier (size_t count)
void	wait ()

Private Attributes
std::mutex	lock_
std::condition_variable	cv_
size_t	num_ {0}
size_t	count_
size_t	gen_ {0}

Detailed Description

Definition at line 27 of file Barrier.h.

Constructor & Destructor Documentation

folly::test::Barrier::Barrier ( size_t  count )

inlineexplicit

Definition at line 28 of file Barrier.h.

: lock_(), cv_(), count_(count) {}

Member Function Documentation

void folly::test::Barrier::wait ( )

inline

Definition at line 30 of file Barrier.h.

References count_, cv_, gen_, lock_, and num_.

Referenced by BENCHMARK(), BENCHMARK_RELATIVE(), and run_once().

              {
    std::unique_lock<std::mutex> lockHeld(lock_);
    auto gen = gen_;
    if (++num_ == count_) {
      num_ = 0;
      gen_++;
      cv_.notify_all();
    } else {
      cv_.wait(lockHeld, [&]() { return gen == gen_; });
    }
  }

Member Data Documentation

size_t folly::test::Barrier::count_

private

Definition at line 46 of file Barrier.h.

Referenced by wait().

std::condition_variable folly::test::Barrier::cv_

private

Definition at line 44 of file Barrier.h.

Referenced by wait().

size_t folly::test::Barrier::gen_ {0}

private

Definition at line 47 of file Barrier.h.

Referenced by wait().

std::mutex folly::test::Barrier::lock_

private

Definition at line 43 of file Barrier.h.

Referenced by wait().

size_t folly::test::Barrier::num_ {0}

private

Definition at line 45 of file Barrier.h.

Referenced by wait().

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The documentation for this struct was generated from the following file:

• proxygen/folly/folly/synchronization/test/Barrier.h