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1 //////////////////////////////////////////////////////////////////////////////
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2 //
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3 // (C) Copyright Ion Gaztanaga 2005-2012. Distributed under the Boost
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4 // Software License, Version 1.0. (See accompanying file
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5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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6 //
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7 // See http://www.boost.org/libs/interprocess for documentation.
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8 //
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9 //////////////////////////////////////////////////////////////////////////////
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10
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11 #ifndef BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP
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12 #define BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP
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13
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14 #if (defined _MSC_VER) && (_MSC_VER >= 1200)
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15 # pragma once
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16 #endif
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17
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18 #include <boost/interprocess/detail/config_begin.hpp>
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19 #include <boost/interprocess/detail/workaround.hpp>
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20
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21 #include <boost/interprocess/detail/posix_time_types_wrk.hpp>
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22 #include <boost/interprocess/sync/posix/semaphore_wrapper.hpp>
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23
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24 namespace boost {
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25 namespace interprocess {
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26 namespace ipcdetail {
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27
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28 class posix_semaphore
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29 {
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30 posix_semaphore();
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31 posix_semaphore(const posix_semaphore&);
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32 posix_semaphore &operator= (const posix_semaphore &);
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33
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34 public:
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35 posix_semaphore(unsigned int initialCount)
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36 { semaphore_init(&m_sem, initialCount); }
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37
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38 ~posix_semaphore()
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39 { semaphore_destroy(&m_sem); }
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40
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41 void post()
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42 { semaphore_post(&m_sem); }
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43
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44 void wait()
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45 { semaphore_wait(&m_sem); }
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46
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47 bool try_wait()
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48 { return semaphore_try_wait(&m_sem); }
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49
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50 bool timed_wait(const boost::posix_time::ptime &abs_time)
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51 { return semaphore_timed_wait(&m_sem, abs_time); }
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52
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53 private:
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54 sem_t m_sem;
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55 };
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56
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57 } //namespace ipcdetail {
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58 } //namespace interprocess {
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59 } //namespace boost {
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60
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61 #include <boost/interprocess/detail/config_end.hpp>
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62
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63 #endif //#ifndef BOOST_INTERPROCESS_POSIX_SEMAPHORE_HPP
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