ceph/src/boost/libs/interprocess/include/boost/interprocess/sync/windows/named_condition_any.hpp

   1  //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2011-2012. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/interprocess for documentation.
   8 //
   9 //////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef BOOST_INTERPROCESS_WINDOWS_NAMED_CONDITION_ANY_HPP
  12 #define BOOST_INTERPROCESS_WINDOWS_NAMED_CONDITION_ANY_HPP
  13
  14 #ifndef BOOST_CONFIG_HPP
  15 #  include <boost/config.hpp>
  16 #endif
  17 #
  18 #if defined(BOOST_HAS_PRAGMA_ONCE)
  19 #  pragma once
  20 #endif
  21
  22 #include <boost/interprocess/detail/config_begin.hpp>
  23 #include <boost/interprocess/detail/workaround.hpp>
  24 #include <boost/interprocess/creation_tags.hpp>
  25 #include <boost/interprocess/permissions.hpp>
  26 #include <boost/interprocess/detail/interprocess_tester.hpp>
  27 #include <boost/interprocess/detail/posix_time_types_wrk.hpp>
  28 #include <boost/interprocess/sync/windows/named_sync.hpp>
  29 #include <boost/interprocess/sync/windows/winapi_semaphore_wrapper.hpp>
  30 #include <boost/interprocess/sync/detail/condition_algorithm_8a.hpp>
  31
  32 namespace boost {
  33 namespace interprocess {
  34 namespace ipcdetail {
  35
  36 class windows_named_condition_any
  37 {
  38    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
  39
  40    //Non-copyable
  41    windows_named_condition_any();
  42    windows_named_condition_any(const windows_named_condition_any &);
  43    windows_named_condition_any &operator=(const windows_named_condition_any &);
  44    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
  45
  46    public:
  47    windows_named_condition_any
  48       (create_only_t, const char *name, const permissions &perm)
  49       : m_condition_data()
  50    {
  51       named_cond_callbacks callbacks(m_condition_data.get_members());
  52       m_named_sync.open_or_create(DoCreate, name, perm, callbacks);
  53    }
  54
  55    windows_named_condition_any
  56       (open_or_create_t, const char *name, const permissions &perm)
  57       : m_condition_data()
  58    {
  59       named_cond_callbacks callbacks(m_condition_data.get_members());
  60       m_named_sync.open_or_create(DoOpenOrCreate, name, perm, callbacks);
  61    }
  62
  63    windows_named_condition_any(open_only_t, const char *name)
  64       : m_condition_data()
  65    {
  66       named_cond_callbacks callbacks(m_condition_data.get_members());
  67       m_named_sync.open_or_create(DoOpen, name, permissions(), callbacks);
  68    }
  69
  70    ~windows_named_condition_any()
  71    {
  72       named_cond_callbacks callbacks(m_condition_data.get_members());
  73       m_named_sync.close(callbacks);
  74    }
  75
  76    void notify_one()
  77    {  m_condition_data.notify_one();   }
  78
  79    void notify_all()
  80    {  m_condition_data.notify_all();   }
  81
  82    template <typename L>
  83    bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time)
  84    {  return m_condition_data.timed_wait(lock, abs_time);   }
  85
  86    template <typename L, typename Pr>
  87    bool timed_wait(L& lock, const boost::posix_time::ptime &abs_time, Pr pred)
  88    {  return m_condition_data.timed_wait(lock, abs_time, pred);   }
  89
  90    template <typename L>
  91    void wait(L& lock)
  92    {  m_condition_data.wait(lock);   }
  93
  94    template <typename L, typename Pr>
  95    void wait(L& lock, Pr pred)
  96    {  m_condition_data.wait(lock, pred);   }
  97
  98    static bool remove(const char *name)
  99    {  return windows_named_sync::remove(name);  }
 100
 101    #if !defined(BOOST_INTERPROCESS_DOXYGEN_INVOKED)
 102    private:
 103
 104    void dont_close_on_destruction()
 105    {}
 106
 107    friend class interprocess_tester;
 108
 109    struct condition_data
 110    {
 111       typedef boost::int32_t           integer_type;
 112       typedef winapi_semaphore_wrapper semaphore_type;
 113       typedef winapi_mutex_wrapper     mutex_type;
 114
 115       integer_type    &get_nwaiters_blocked()
 116       {  return m_nwaiters_blocked;  }
 117
 118       integer_type    &get_nwaiters_gone()
 119       {  return m_nwaiters_gone;  }
 120
 121       integer_type    &get_nwaiters_to_unblock()
 122       {  return m_nwaiters_to_unblock;  }
 123
 124       semaphore_type  &get_sem_block_queue()
 125       {  return m_sem_block_queue;  }
 126
 127       semaphore_type  &get_sem_block_lock()
 128       {  return m_sem_block_lock;  }
 129
 130       mutex_type      &get_mtx_unblock_lock()
 131       {  return m_mtx_unblock_lock;  }
 132
 133       integer_type               m_nwaiters_blocked;
 134       integer_type               m_nwaiters_gone;
 135       integer_type               m_nwaiters_to_unblock;
 136       winapi_semaphore_wrapper   m_sem_block_queue;
 137       winapi_semaphore_wrapper   m_sem_block_lock;
 138       winapi_mutex_wrapper       m_mtx_unblock_lock;
 139    };
 140
 141    class named_cond_callbacks : public windows_named_sync_interface
 142    {
 143       typedef __int64 sem_count_t;
 144       mutable sem_count_t sem_counts [2];
 145
 146       public:
 147       named_cond_callbacks(condition_data &cond_data)
 148          : m_condition_data(cond_data)
 149       {}
 150
 151       virtual std::size_t get_data_size() const
 152       {  return sizeof(sem_counts);   }
 153
 154       virtual const void *buffer_with_final_data_to_file()
 155       {
 156          sem_counts[0] = m_condition_data.m_sem_block_queue.value();
 157          sem_counts[1] = m_condition_data.m_sem_block_lock.value();
 158          return &sem_counts;
 159       }
 160
 161       virtual const void *buffer_with_init_data_to_file()
 162       {
 163          sem_counts[0] = 0;
 164          sem_counts[1] = 1;
 165          return &sem_counts;
 166       }
 167
 168       virtual void *buffer_to_store_init_data_from_file()
 169       {  return &sem_counts; }
 170
 171       virtual bool open(create_enum_t, const char *id_name)
 172       {
 173          m_condition_data.m_nwaiters_blocked = 0;
 174          m_condition_data.m_nwaiters_gone = 0;
 175          m_condition_data.m_nwaiters_to_unblock = 0;
 176
 177          //Now open semaphores and mutex.
 178          //Use local variables + swap to guarantee consistent
 179          //initialization and cleanup in case any opening fails
 180          permissions perm;
 181          perm.set_unrestricted();
 182          std::string aux_str  = "Global\\bipc.cond.";
 183          aux_str += id_name;
 184          std::size_t pos = aux_str.size();
 185
 186          //sem_block_queue
 187          aux_str += "_bq";
 188          winapi_semaphore_wrapper sem_block_queue;
 189          bool created;
 190          if(!sem_block_queue.open_or_create
 191             (aux_str.c_str(), sem_counts[0], winapi_semaphore_wrapper::MaxCount, perm, created))
 192             return false;
 193          aux_str.erase(pos);
 194
 195          //sem_block_lock
 196          aux_str += "_bl";
 197          winapi_semaphore_wrapper sem_block_lock;
 198          if(!sem_block_lock.open_or_create
 199             (aux_str.c_str(), sem_counts[1], winapi_semaphore_wrapper::MaxCount, perm, created))
 200             return false;
 201          aux_str.erase(pos);
 202
 203          //mtx_unblock_lock
 204          aux_str += "_ul";
 205          winapi_mutex_wrapper mtx_unblock_lock;
 206          if(!mtx_unblock_lock.open_or_create(aux_str.c_str(), perm))
 207             return false;
 208
 209          //All ok, commit data
 210          m_condition_data.m_sem_block_queue.swap(sem_block_queue);
 211          m_condition_data.m_sem_block_lock.swap(sem_block_lock);
 212          m_condition_data.m_mtx_unblock_lock.swap(mtx_unblock_lock);
 213          return true;
 214       }
 215
 216       virtual void close()
 217       {
 218          m_condition_data.m_sem_block_queue.close();
 219          m_condition_data.m_sem_block_lock.close();
 220          m_condition_data.m_mtx_unblock_lock.close();
 221          m_condition_data.m_nwaiters_blocked = 0;
 222          m_condition_data.m_nwaiters_gone = 0;
 223          m_condition_data.m_nwaiters_to_unblock = 0;
 224       }
 225
 226       virtual ~named_cond_callbacks()
 227       {}
 228
 229       private:
 230       condition_data &m_condition_data;
 231    };
 232
 233    windows_named_sync   m_named_sync;
 234    ipcdetail::condition_8a_wrapper<condition_data> m_condition_data;
 235    #endif   //#ifndef BOOST_INTERPROCESS_DOXYGEN_INVOKED
 236 };
 237
 238 }  //namespace ipcdetail {
 239 }  //namespace interprocess {
 240 }  //namespace boost {
 241
 242 #include <boost/interprocess/detail/config_end.hpp>
 243
 244 #endif   //BOOST_INTERPROCESS_WINDOWS_NAMED_CONDITION_ANY_HPP