summaryrefslogtreecommitdiffstats
path: root/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mutex.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mutex.hpp')
-rw-r--r--external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mutex.hpp167
1 files changed, 167 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mutex.hpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mutex.hpp
new file mode 100644
index 00000000..80a38f5c
--- /dev/null
+++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/mutex.hpp
@@ -0,0 +1,167 @@
+/*
+ Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file
+
+ This file is part of libzmq, the ZeroMQ core engine in C++.
+
+ libzmq is free software; you can redistribute it and/or modify it under
+ the terms of the GNU Lesser General Public License (LGPL) as published
+ by the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ As a special exception, the Contributors give you permission to link
+ this library with independent modules to produce an executable,
+ regardless of the license terms of these independent modules, and to
+ copy and distribute the resulting executable under terms of your choice,
+ provided that you also meet, for each linked independent module, the
+ terms and conditions of the license of that module. An independent
+ module is a module which is not derived from or based on this library.
+ If you modify this library, you must extend this exception to your
+ version of the library.
+
+ libzmq 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_MUTEX_HPP_INCLUDED__
+#define __ZMQ_MUTEX_HPP_INCLUDED__
+
+#include "platform.hpp"
+#include "err.hpp"
+
+// Mutex class encapsulates OS mutex in a platform-independent way.
+
+#ifdef ZMQ_HAVE_WINDOWS
+
+#include "windows.hpp"
+
+namespace zmq
+{
+
+ class mutex_t
+ {
+ public:
+ inline mutex_t ()
+ {
+ InitializeCriticalSection (&cs);
+ }
+
+ inline ~mutex_t ()
+ {
+ DeleteCriticalSection (&cs);
+ }
+
+ inline void lock ()
+ {
+ EnterCriticalSection (&cs);
+ }
+
+ inline bool try_lock ()
+ {
+ return (TryEnterCriticalSection (&cs)) ? true : false;
+ }
+
+ inline void unlock ()
+ {
+ LeaveCriticalSection (&cs);
+ }
+
+ private:
+
+ CRITICAL_SECTION cs;
+
+ // Disable copy construction and assignment.
+ mutex_t (const mutex_t&);
+ void operator = (const mutex_t&);
+ };
+
+}
+
+#else
+
+#include <pthread.h>
+
+namespace zmq
+{
+
+ class mutex_t
+ {
+ public:
+ inline mutex_t ()
+ {
+ int rc = pthread_mutex_init (&mutex, NULL);
+ posix_assert (rc);
+ }
+
+ inline ~mutex_t ()
+ {
+ int rc = pthread_mutex_destroy (&mutex);
+ posix_assert (rc);
+ }
+
+ inline void lock ()
+ {
+ int rc = pthread_mutex_lock (&mutex);
+ posix_assert (rc);
+ }
+
+ inline bool try_lock ()
+ {
+ int rc = pthread_mutex_trylock (&mutex);
+ if (rc == EBUSY)
+ return false;
+
+ posix_assert (rc);
+ return true;
+ }
+
+ inline void unlock ()
+ {
+ int rc = pthread_mutex_unlock (&mutex);
+ posix_assert (rc);
+ }
+
+ private:
+
+ pthread_mutex_t mutex;
+
+ // Disable copy construction and assignment.
+ mutex_t (const mutex_t&);
+ const mutex_t &operator = (const mutex_t&);
+ };
+
+}
+
+#endif
+
+
+namespace zmq
+{
+ struct scoped_lock_t
+ {
+ scoped_lock_t (mutex_t& mutex_)
+ : mutex (mutex_)
+ {
+ mutex.lock ();
+ }
+
+ ~scoped_lock_t ()
+ {
+ mutex.unlock ();
+ }
+
+ private:
+
+ mutex_t& mutex;
+
+ // Disable copy construction and assignment.
+ scoped_lock_t (const scoped_lock_t&);
+ const scoped_lock_t &operator = (const scoped_lock_t&);
+ };
+}
+
+#endif