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diff --git a/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/urcu/options.h b/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/urcu/options.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_URCU_OPTIONS_H
+#define CDSLIB_URCU_OPTIONS_H
+
+#include <cds/details/defs.h>
+
+namespace cds { namespace urcu {
+    /// Exception "RCU deadlock detected"
+    /**@anchor cds_urcu_rcu_deadlock
+        This exception is raised when \p cds::opt::v::rcu_throw_deadlock deadlock checking policy
+        is used, see \p cds::opt::rcu_check_deadlock option.
+    */
+    class rcu_deadlock: public std::logic_error
+    {
+        //@cond
+    public:
+        rcu_deadlock()
+            : std::logic_error( "RCU deadlock detected" )
+        {}
+        //@endcond
+    };
+}} // namespace cds::urcu
+
+
+namespace cds { namespace opt {
+
+    /// [type-option] RCU check deadlock option setter
+    /**
+        The RCU containers can check if a deadlock between read-side critical section
+        and \p synchronize call is possible.
+        This option specifies a policy for checking this situation.
+        Possible \p Type is:
+        - \p opt::v::rcu_no_check_deadlock - no deadlock checking
+        - \p opt::v::rcu_assert_deadlock - call \p assert in debug mode only
+        - \p opt::v::rcu_throw_deadlock - throw an \p cds::urcu::rcu_deadlock exception when a deadlock
+            is encountered
+
+        Usually, the default \p Type for this option is \p opt::v::rcu_throw_deadlock.
+    */
+    template <typename Type>
+    struct rcu_check_deadlock
+    {
+        //@cond
+        template <typename Base> struct pack: public Base
+        {
+            typedef Type rcu_check_deadlock;
+        };
+        //@endcond
+    };
+
+    namespace v {
+        /// \ref opt::rcu_check_deadlock option value: no deadlock checking
+        struct rcu_no_check_deadlock {};
+
+        /// \ref opt::rcu_check_deadlock option value: call \p assert in debug mode only
+        struct rcu_assert_deadlock {};
+
+        /// \ref opt::rcu_check_deadlock option value: throw a cds::urcu::rcu_deadlock exception when a deadlock detected
+        struct rcu_throw_deadlock {};
+    }
+}}  // namespace cds::opt
+
+
+#endif  // #ifndef CDSLIB_URCU_OPTIONS_H