Updated copyright

[libcds.git] / cds / gc / impl / hp_impl.h

diff --git a/cds/gc/impl/hp_impl.h b/cds/gc/impl/hp_impl.h
index 8d046e30763698e167b97ddc9a14eae5c5b284c2..31cff44b1b5857ed6ccfc5d5698fd0481958fe0e 100644 (file)
--- a/cds/gc/impl/hp_impl.h
+++ b/cds/gc/impl/hp_impl.h
@@ -1,7 +1,35 @@
-//$$CDS-header$$
+/*
+    This file is a part of libcds - Concurrent Data Structures library
 
-#ifndef __CDS_GC_HP_HP_IMPL_H
-#define __CDS_GC_HP_HP_IMPL_H
+    (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2017
+
+    Source code repo: http://github.com/khizmax/libcds/
+    Download: http://sourceforge.net/projects/libcds/files/
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this
+      list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CDSLIB_GC_IMPL_HP_IMPL_H
+#define CDSLIB_GC_IMPL_HP_IMPL_H
 
 #include <cds/threading/model.h>
 #include <cds/details/static_functor.h>
@@ -9,12 +37,19 @@
 //@cond
 namespace cds { namespace gc {
 
+    namespace hp {
+        static inline ThreadGC& get_thread_gc()
+        {
+            return cds::threading::getGC<HP>();
+        }
+    } // namespace hp
+
     inline HP::thread_gc::thread_gc(
         bool    bPersistent
         )
         : m_bPersistent( bPersistent )
     {
-        if ( !threading::Manager::isThreadAttached() )
+        if ( !threading::Manager::isThreadAttached())
             threading::Manager::attachThread();
     }
 
@@ -24,17 +59,76 @@ namespace cds { namespace gc {
             cds::threading::Manager::detachThread();
     }
 
-    inline HP::Guard::Guard() CDS_CONSTEXPR
-        : Guard::base_class( cds::threading::getGC<HP>() )
-    {}
+    inline /*static*/ cds::gc::hp::details::hp_guard* HP::thread_gc::alloc_guard()
+    {
+        return hp::get_thread_gc().allocGuard();
+    }
 
-    template <size_t COUNT>
-    inline HP::GuardArray<COUNT>::GuardArray() CDS_CONSTEXPR
-        : GuardArray::base_class( cds::threading::getGC<HP>() )
-    {}
+    inline /*static*/ void HP::thread_gc::free_guard( cds::gc::hp::details::hp_guard* g )
+    {
+        hp::get_thread_gc().freeGuard( g );
+    }
+
+    inline HP::Guard::Guard()
+        : m_guard( hp::get_thread_gc().allocGuard())
+    {
+        if ( !m_guard )
+            throw too_many_hazard_ptr_exception();
+    }
 
     template <typename T>
-    inline void HP::retire( T * p, void (* pFunc)(T *) )
+    inline T * HP::Guard::assign( T * p )
+    {
+        assert( m_guard != nullptr );
+
+        T * pp = ( *m_guard = p );
+        hp::get_thread_gc().sync();
+        return pp;
+    }
+
+    inline void HP::Guard::link()
+    {
+        if ( !m_guard ) {
+            m_guard = hp::get_thread_gc().allocGuard();
+            if ( !m_guard )
+                throw too_many_hazard_ptr_exception();
+        }
+    }
+
+    inline void HP::Guard::unlink()
+    {
+        if ( m_guard ) {
+            hp::get_thread_gc().freeGuard( m_guard );
+            m_guard = nullptr;
+        }
+    }
+
+    template <size_t Count>
+    inline HP::GuardArray<Count>::GuardArray()
+    {
+        if ( hp::get_thread_gc().allocGuard( m_arr ) != Count )
+            throw too_many_hazard_ptr_exception();
+    }
+
+    template <size_t Count>
+    inline HP::GuardArray<Count>::~GuardArray()
+    {
+        hp::get_thread_gc().freeGuard( m_arr );
+    }
+
+    template <size_t Count>
+    template <typename T>
+    inline T * HP::GuardArray<Count>::assign( size_t nIndex, T* p )
+    {
+        assert( nIndex < capacity());
+
+        m_arr.set(nIndex, p);
+        hp::get_thread_gc().sync();
+        return p;
+    }
+
+    template <typename T>
+    inline void HP::retire( T * p, void (* pFunc)(T *))
     {
         cds::threading::getGC<HP>().retirePtr( p, pFunc );
     }
@@ -42,16 +136,15 @@ namespace cds { namespace gc {
     template <class Disposer, typename T>
     inline void HP::retire( T * p )
     {
-        cds::threading::getGC<HP>().retirePtr( p, cds::details::static_functor<Disposer, T>::call );
+        hp::get_thread_gc().retirePtr( p, cds::details::static_functor<Disposer, T>::call );
     }
 
     inline void HP::scan()
     {
-        cds::threading::getGC<HP>().scan();
+        hp::get_thread_gc().scan();
     }
 
-
 }} // namespace cds::gc
 //@endcond
 
-#endif // #ifndef __CDS_GC_HP_HP_IMPL_H
+#endif // #ifndef CDSLIB_GC_IMPL_HP_IMPL_H