semaphore_t class removed

The class was not used anywhere anymore. Removed.
Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

src/Makefile.am

@@ -55,7 +55,6 @@ libzmq_la_SOURCES = \
     req.hpp \
     router.hpp \
     select.hpp \
-    semaphore.hpp \
     session.hpp \
     signaler.hpp \
     socket_base.hpp \

src/ctx.hpp

@@ -27,8 +27,6 @@
 #include <stdarg.h>
 
 #include "mailbox.hpp"
-#include "semaphore.hpp"
-#include "ypipe.hpp"
 #include "array.hpp"
 #include "config.hpp"
 #include "mutex.hpp"

src/semaphore.hpp

-/*
-    Copyright (c) 2007-2011 iMatix Corporation
-    Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
-
-    This file is part of 0MQ.
-
-    0MQ is free software; you can redistribute it and/or modify it under
-    the terms of the GNU Lesser General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    0MQ is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef __ZMQ_SEMAPHORE_HPP_INCLUDED__
-#define __ZMQ_SEMAPHORE_HPP_INCLUDED__
-
-#include "platform.hpp"
-#include "err.hpp"
-
-#if defined ZMQ_HAVE_WINDOWS
-#include "windows.hpp"
-#elif defined ZMQ_HAVE_OPENVMS
-#include <pthread.h>
-#else
-#include <semaphore.h>
-#endif
-
-namespace zmq
-{
-    //  Simple semaphore. Only single thread may be waiting at any given time.
-    //  Also, the semaphore may not be posted before the previous post
-    //  was matched by corresponding wait and the waiting thread was
-    //  released.
-
-#if defined ZMQ_HAVE_WINDOWS
-
-    //  On Windows platform simple semaphore is implemeted using event object.
-
-    class semaphore_t
-    { 
-    public:
-
-        //  Initialise the semaphore.
-        inline semaphore_t ()
-        {
-            ev = CreateEvent (NULL, FALSE, FALSE, NULL);
-            win_assert (ev != NULL);
-        }
-
-        //  Destroy the semaphore.
-        inline ~semaphore_t ()
-        {
-            int rc = CloseHandle (ev);
-            win_assert (rc != 0);    
-        }
-
-        //  Wait for the semaphore.
-        inline void wait ()
-        {
-            DWORD rc = WaitForSingleObject (ev, INFINITE);
-            win_assert (rc != WAIT_FAILED);
-        }
-
-        //  Post the semaphore.
-        inline void post ()
-        {
-            int rc = SetEvent (ev);
-            win_assert (rc != 0);
-        }
-
-    private:
-
-        HANDLE ev;
-
-        semaphore_t (const semaphore_t&);
-        const semaphore_t &operator = (const semaphore_t&);
-    };
-
-#elif defined ZMQ_HAVE_LINUX || defined ZMQ_HAVE_OSX || defined ZMQ_HAVE_OPENVMS
-
-    //  On platforms that allow for double locking of a mutex from the same
-    //  thread, simple semaphore is implemented using mutex, as it is more
-    //  efficient than full-blown semaphore.
-
-    //  Note that OS-level semaphore is not implemented on OSX, so the below
-    //  code is not only optimisation, it's necessary to make 0MQ work on OSX.
-
-    class semaphore_t
-    { 
-    public:
-
-        //  Initialise the semaphore.
-        inline semaphore_t ()
-        {
-            int rc = pthread_mutex_init (&mutex, NULL);
-            posix_assert (rc);
-            rc = pthread_mutex_lock (&mutex);
-            posix_assert (rc);
-        }
-
-        //  Destroy the semaphore.
-        inline ~semaphore_t ()
-        {
-            int rc = pthread_mutex_unlock (&mutex);
-            posix_assert (rc);
-            rc = pthread_mutex_destroy (&mutex);
-            posix_assert (rc);
-        }
-
-        //  Wait for the semaphore.
-        inline void wait ()
-        {
-             int rc = pthread_mutex_lock (&mutex);
-             posix_assert (rc);
-        }
-
-        //  Post the semaphore.
-        inline void post ()
-        {
-            int rc = pthread_mutex_unlock (&mutex);
-            posix_assert (rc);
-        }
-
-    private:
-
-        pthread_mutex_t mutex;
-
-        semaphore_t (const semaphore_t&);
-        const semaphore_t &operator = (const semaphore_t&);
-    };
-
-#else
-
-    //  Default implementation maps simple semaphore to POSIX semaphore.
-
-    class semaphore_t
-    { 
-    public:
-
-        //  Initialise the semaphore.
-        inline semaphore_t ()
-        {
-             int rc = sem_init (&sem, 0, 0);
-             errno_assert (rc != -1);
-        }
-
-        //  Destroy the semaphore.
-        inline ~semaphore_t ()
-        {
-             int rc = sem_destroy (&sem);
-             errno_assert (rc != -1);
-        }
-
-        //  Wait for the semaphore.
-        inline void wait ()
-        {
-             int rc = sem_wait (&sem);
-             errno_assert (rc != -1);
-        }
-
-        //  Post the semaphore.
-        inline void post ()
-        {
-            int rc = sem_post (&sem);
-            errno_assert (rc != -1);
-        }
-
-    private:
-
-        //  Underlying system semaphore object.
-        sem_t sem;
-
-        semaphore_t (const semaphore_t&);
-        const semaphore_t &operator = (const semaphore_t&);
-    };
-
-#endif
-
-}
-
-#endif
-