]> git.lyx.org Git - features.git/blobdiff - boost/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
boost: add eol property
[features.git] / boost / boost / smart_ptr / detail / spinlock_gcc_arm.hpp
index 7d7c786985279c076ade146aa78d32ca456833ed..ba6c511e28015409229a4ef1ec82428a909bc3ee 100644 (file)
@@ -1,85 +1,85 @@
-#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED\r
-#define BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED\r
-\r
-//\r
-//  Copyright (c) 2008 Peter Dimov\r
-//\r
-//  Distributed under the Boost Software License, Version 1.0.\r
-//  See accompanying file LICENSE_1_0.txt or copy at\r
-//  http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-#include <boost/smart_ptr/detail/yield_k.hpp>\r
-\r
-namespace boost\r
-{\r
-\r
-namespace detail\r
-{\r
-\r
-class spinlock\r
-{\r
-public:\r
-\r
-    int v_;\r
-\r
-public:\r
-\r
-    bool try_lock()\r
-    {\r
-        int r;\r
-\r
-        __asm__ __volatile__(\r
-            "swp %0, %1, [%2]":\r
-            "=&r"( r ): // outputs\r
-            "r"( 1 ), "r"( &v_ ): // inputs\r
-            "memory", "cc" );\r
-\r
-        return r == 0;\r
-    }\r
-\r
-    void lock()\r
-    {\r
-        for( unsigned k = 0; !try_lock(); ++k )\r
-        {\r
-            boost::detail::yield( k );\r
-        }\r
-    }\r
-\r
-    void unlock()\r
-    {\r
-        __asm__ __volatile__( "" ::: "memory" );\r
-        *const_cast< int volatile* >( &v_ ) = 0;\r
-    }\r
-\r
-public:\r
-\r
-    class scoped_lock\r
-    {\r
-    private:\r
-\r
-        spinlock & sp_;\r
-\r
-        scoped_lock( scoped_lock const & );\r
-        scoped_lock & operator=( scoped_lock const & );\r
-\r
-    public:\r
-\r
-        explicit scoped_lock( spinlock & sp ): sp_( sp )\r
-        {\r
-            sp.lock();\r
-        }\r
-\r
-        ~scoped_lock()\r
-        {\r
-            sp_.unlock();\r
-        }\r
-    };\r
-};\r
-\r
-} // namespace detail\r
-} // namespace boost\r
-\r
-#define BOOST_DETAIL_SPINLOCK_INIT {0}\r
-\r
-#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED\r
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  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)
+//
+
+#include <boost/smart_ptr/detail/yield_k.hpp>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    int v_;
+
+public:
+
+    bool try_lock()
+    {
+        int r;
+
+        __asm__ __volatile__(
+            "swp %0, %1, [%2]":
+            "=&r"( r ): // outputs
+            "r"( 1 ), "r"( &v_ ): // inputs
+            "memory", "cc" );
+
+        return r == 0;
+    }
+
+    void lock()
+    {
+        for( unsigned k = 0; !try_lock(); ++k )
+        {
+            boost::detail::yield( k );
+        }
+    }
+
+    void unlock()
+    {
+        __asm__ __volatile__( "" ::: "memory" );
+        *const_cast< int volatile* >( &v_ ) = 0;
+    }
+
+public:
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( spinlock & sp ): sp_( sp )
+        {
+            sp.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_DETAIL_SPINLOCK_INIT {0}
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED