ceph/src/boost/boost/fiber/mutex.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_MUTEX_H
   8 #define BOOST_FIBERS_MUTEX_H
   9
  10 #include <boost/config.hpp>
  11
  12 #include <boost/assert.hpp>
  13
  14 #include <boost/fiber/context.hpp>
  15 #include <boost/fiber/detail/config.hpp>
  16 #include <boost/fiber/detail/spinlock.hpp>
  17
  18 #ifdef BOOST_HAS_ABI_HEADERS
  19 #  include BOOST_ABI_PREFIX
  20 #endif
  21
  22 #ifdef _MSC_VER
  23 # pragma warning(push)
  24 # pragma warning(disable:4251)
  25 #endif
  26
  27 namespace boost {
  28 namespace fibers {
  29
  30 class condition_variable;
  31
  32 class BOOST_FIBERS_DECL mutex {
  33 private:
  34     friend class condition_variable;
  35
  36     typedef context::wait_queue_t   wait_queue_type;
  37
  38     detail::spinlock            wait_queue_splk_{};
  39     wait_queue_type             wait_queue_{};
  40     context                 *   owner_{ nullptr };
  41
  42 public:
  43     mutex() = default;
  44
  45     ~mutex() {
  46         BOOST_ASSERT( nullptr == owner_);
  47         BOOST_ASSERT( wait_queue_.empty() );
  48     }
  49
  50     mutex( mutex const&) = delete;
  51     mutex & operator=( mutex const&) = delete;
  52
  53     void lock();
  54
  55     bool try_lock();
  56
  57     void unlock();
  58 };
  59
  60 }}
  61
  62 #ifdef _MSC_VER
  63 # pragma warning(pop)
  64 #endif
  65
  66 #ifdef BOOST_HAS_ABI_HEADERS
  67 #  include BOOST_ABI_SUFFIX
  68 #endif
  69
  70 #endif // BOOST_FIBERS_MUTEX_H