ceph/src/boost/libs/fiber/include/boost/fiber/barrier.hpp

   1
   2 //          Copyright Oliver Kowalke 2013.
   3 // Distributed under the Boost Software License, Version 1.0.
   4 //    (See accompanying file LICENSE_1_0.txt or copy at
   5 //          http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #ifndef BOOST_FIBERS_BARRIER_H
   8 #define BOOST_FIBERS_BARRIER_H
   9
  10 #include <cstddef>
  11
  12 #include <boost/config.hpp>
  13
  14 #include <boost/fiber/condition_variable.hpp>
  15 #include <boost/fiber/detail/config.hpp>
  16 #include <boost/fiber/mutex.hpp>
  17
  18 #ifdef BOOST_HAS_ABI_HEADERS
  19 #  include BOOST_ABI_PREFIX
  20 #endif
  21
  22 namespace boost {
  23 namespace fibers {
  24
  25 class BOOST_FIBERS_DECL barrier {
  26 private:
  27         std::size_t         initial_;
  28         std::size_t         current_;
  29         bool                cycle_{ true };
  30         mutex               mtx_{};
  31         condition_variable  cond_{};
  32
  33 public:
  34         explicit barrier( std::size_t);
  35
  36     barrier( barrier const&) = delete;
  37     barrier & operator=( barrier const&) = delete;
  38
  39         bool wait();
  40 };
  41
  42 }}
  43
  44 #ifdef BOOST_HAS_ABI_HEADERS
  45 #  include BOOST_ABI_SUFFIX
  46 #endif
  47
  48 #endif // BOOST_FIBERS_BARRIER_H