[Boost-commit] svn:boost r81083 - trunk/boost/thread

Subject: [Boost-commit] svn:boost r81083 - trunk/boost/thread
From: vicente.botet_at_[hidden]
Date: 2012-10-28 20:59:57

Author: viboes
Date: 2012-10-28 20:59:57 EDT (Sun, 28 Oct 2012)
New Revision: 81083
URL: http://svn.boost.org/trac/boost/changeset/81083

Log:
Thread: Added lockable concept checkers
Added:
   trunk/boost/thread/lockable_concepts.hpp   (contents, props changed)

Added: trunk/boost/thread/lockable_concepts.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/thread/lockable_concepts.hpp	2012-10-28 20:59:57 EDT (Sun, 28 Oct 2012)
@@ -0,0 +1,143 @@
+// (C) Copyright 2012 Vicente Botet
+//
+//  Distributed under the Boost Software License, Version 1.0. (See accompanying
+//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_THREAD_LOCKABLE_CONCEPTS_HPP
+#define BOOST_THREAD_LOCKABLE_CONCEPTS_HPP
+
+#include <boost/chrono/chrono.hpp>
+#include <boost/concept_check.hpp>
+
+namespace boost
+{
+
+  /**
+   * BasicLockable object supports the basic features
+   * required to delimit a critical region
+   * Supports the basic lock and unlock functions.
+   */
+
+  //[BasicLockable
+  template <typename Mutex>
+  struct BasicLockable
+  {
+
+    BOOST_CONCEPT_USAGE(BasicLockable)
+    {
+      l.lock();
+      l.unlock();
+    }
+  private:
+    Mutex l;
+  }
+  ;
+  //]
+  /**
+   * Lockable extends BasicLockable
+   * with try_lock functions.
+   */
+
+  //[Lockable
+  template <typename Mutex>
+  struct Lockable
+  {
+    BOOST_CONCEPT_ASSERT(( BasicLockable<Mutex> ));
+
+    BOOST_CONCEPT_USAGE(Lockable)
+    {
+      if (l.try_lock()) return;
+    }
+  private:
+    Mutex l;
+  };
+  //]
+
+  /**
+   * TimedLockable object extends Lockable
+   * with timed lock functions: try_lock_until and try_lock_for and the exception based lock_until and lock_for
+   */
+
+  //[TimedLockable
+  template <typename Mutex>
+  struct TimedLockable
+  {
+    BOOST_CONCEPT_ASSERT(( Lockable<Mutex> ));
+
+    BOOST_CONCEPT_USAGE(TimedLockable)
+    {
+      if (l.try_lock_until(t)) return;
+      if (l.try_lock_for(d)) return;
+    }
+    Mutex& l;
+    chrono::system_clock::time_point& t;
+    chrono::system_clock::duration& d;
+  };
+  //]
+
+  /**
+   * SharedLockable object extends TimedLockable
+   * with the lock_shared, lock_shared_until, lock_shared_for, try_lock_shared_until, try_lock_shared
+   * and unlock_shared functions
+   */
+  //[SharedLockable
+  template <typename Mutex>
+  struct SharedLockable
+  {
+    BOOST_CONCEPT_ASSERT(( TimedLockable<Mutex> ));
+
+    BOOST_CONCEPT_USAGE(SharedLockable)
+    {
+      l.lock_shared();
+      l.unlock_shared();
+      if (l.try_lock_shared()) return;
+      if (l.try_lock_shared_until(t)) return;
+      if (l.try_lock_shared_for(d)) return;
+    }
+    Mutex& l;
+    chrono::system_clock::time_point& t;
+    chrono::system_clock::duration& d;
+  };
+  //]
+
+  /**
+   * UpgradeLockable object extends SharedLockable
+   * with the lock_upgrade, lock_upgrade_until, unlock_upgrade_and_lock,
+   * unlock_and_lock_shared and unlock_upgrade_and_lock_shared functions
+   */
+
+  //[UpgradeLockable
+  template <typename Mutex>
+  struct UpgradeLockable
+  {
+    BOOST_CONCEPT_ASSERT(( SharedLockable<Mutex> ));
+
+    BOOST_CONCEPT_USAGE(UpgradeLockable)
+    {
+      l.lock_upgrade();
+      l.unlock_upgrade();
+      if (l.try_lock_upgrade()) return;
+      if (l.try_lock_upgrade_until(t)) return;
+      if (l.try_lock_upgrade_for(d)) return;
+      if (l.try_unlock_shared_and_lock()) return;
+      if (l.try_unlock_shared_and_lock_until(t)) return;
+      if (l.try_unlock_shared_and_lock_for(d)) return;
+      l.unlock_and_lock_shared();
+      if (l.try_unlock_shared_and_lock_upgrade()) return;
+      if (l.try_unlock_shared_and_lock_upgrade_until(t)) return;
+      if (l.try_unlock_shared_and_lock_upgrade_for(d)) return;
+      l.unlock_and_lock_upgrade();
+      l.unlock_upgrade_and_lock();
+      if (l.try_unlock_upgrade_and_lock()) return;
+      if (l.try_unlock_upgrade_and_lock_until(t)) return;
+      if (l.try_unlock_upgrade_and_lock_for(d)) return;
+      l.unlock_upgrade_and_lock_shared();
+    }
+    Mutex& l;
+    chrono::system_clock::time_point& t;
+    chrono::system_clock::duration& d;
+  };
+  //]
+
+}
+#endif