fixed adding file problem

[c11concurrency-benchmarks.git] / gdax-orderbook-hpp / demo / dependencies / libcds-2.3.2 / cds / details / aligned_type.h

diff --git a/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/details/aligned_type.h b/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/details/aligned_type.h
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+/*
+    This file is a part of libcds - Concurrent Data Structures library
+
+    (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_DETAILS_ALIGNED_TYPE_H
+#define CDSLIB_DETAILS_ALIGNED_TYPE_H
+
+#include <cds/details/defs.h>
+
+namespace cds { namespace details {
+
+    /// Aligned type
+    /**
+        This meta-algorithm solves compiler problem when you need to declare a type \p T with alignment
+        equal to another type alignment. For example, the following declaration produces an error in Microsoft Visual Studio 2008 compiler:
+        \code
+            typedef double  my_double;
+            typedef __declspec(align( __alignof(my_double))) int   aligned_int;
+        \endcode
+        In MS VS, the __declspec(align(N)) construction requires that N must be a integer constant (1, 2, 4 and so on)
+        but not an integer constant expression.
+
+        The result of this meta-algo is a type \p aligned_type<T,Alignment>::type that is \p T aligned by \p Alignment.
+        For example, with \p aligned_type the prevoius example will not generate an error:
+        \code
+            typedef double  my_double;
+            typedef typename cds::details::aligned_type<int, __alignof(my_double)>::type   aligned_int;
+        \endcode
+        and result of this declaration is equivalent to
+        \code
+            typedef __declspec(align(8)) int   aligned_int;
+        \endcode
+
+        The \p Alignment template parameter must be a constant expression and its result must be power of two.
+        The maximum of its value is 1024.
+
+        See also \ref align_as
+    */
+    template <typename T, size_t Alignment>
+    struct aligned_type
+#ifdef CDS_DOXYGEN_INVOKED
+        {}
+#endif
+;
+
+    //@cond none
+#   define CDS_ALIGNED_TYPE_impl(nAlign) template <typename T> struct aligned_type<T,nAlign> { typedef CDS_TYPE_ALIGNMENT(nAlign) T type; }
+    CDS_ALIGNED_TYPE_impl(1);
+    CDS_ALIGNED_TYPE_impl(2);
+    CDS_ALIGNED_TYPE_impl(4);
+    CDS_ALIGNED_TYPE_impl(8);
+    CDS_ALIGNED_TYPE_impl(16);
+    CDS_ALIGNED_TYPE_impl(32);
+    CDS_ALIGNED_TYPE_impl(64);
+    CDS_ALIGNED_TYPE_impl(128);
+    CDS_ALIGNED_TYPE_impl(256);
+    CDS_ALIGNED_TYPE_impl(512);
+    CDS_ALIGNED_TYPE_impl(1024);
+#   undef CDS_ALIGNED_TYPE_impl
+    //@endcond
+
+    /** Alignment by example
+
+        This meta-algo is similar to \ref aligned_type <T, alignof(AlignAs)>.
+
+        For example, the following code
+        \code
+        typedef typename cds::details::align_as<int, double>::type   aligned_int;
+        \endcode
+        declares type \p aligned_int which is \p int aligned like \p double.
+
+        See also: \ref aligned_type
+    */
+    template <typename T, typename AlignAs>
+    struct align_as {
+        /// Result of meta-algo: type \p T aligned like type \p AlignAs
+        typedef typename aligned_type<T, alignof(AlignAs)>::type type;
+    };
+
+}}  // namespace cds::details
+
+#endif // #ifndef CDSLIB_DETAILS_ALIGNED_TYPE_H