stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

depends/x86_64-pc-linux-gnu/include/boost/fiber/recursive_mutex.hpp

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+
+//          Copyright Oliver Kowalke 2013.
+// 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)
+//
+//  based on boost::interprocess::sync::interprocess_spinlock
+
+#ifndef BOOST_FIBERS_RECURSIVE_MUTEX_H
+#define BOOST_FIBERS_RECURSIVE_MUTEX_H
+
+#include <cstddef>
+
+#include <boost/config.hpp>
+
+#include <boost/assert.hpp>
+
+#include <boost/fiber/context.hpp>
+#include <boost/fiber/detail/config.hpp>
+#include <boost/fiber/detail/spinlock.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable:4251)
+#endif
+
+namespace boost {
+namespace fibers {
+
+class condition_variable;
+
+class BOOST_FIBERS_DECL recursive_mutex {
+private:
+    friend class condition_variable;
+
+    typedef context::wait_queue_t   wait_queue_type;
+
+    detail::spinlock            wait_queue_splk_{};
+    wait_queue_type             wait_queue_{};
+    context                 *   owner_{ nullptr };
+    std::size_t                 count_{ 0 };
+
+public:
+    recursive_mutex() = default;
+
+    ~recursive_mutex() {
+        BOOST_ASSERT( nullptr == owner_);
+        BOOST_ASSERT( 0 == count_);
+        BOOST_ASSERT( wait_queue_.empty() );
+    }
+
+    recursive_mutex( recursive_mutex const&) = delete;
+    recursive_mutex & operator=( recursive_mutex const&) = delete;
+
+    void lock();
+
+    bool try_lock() noexcept;
+
+    void unlock();
+};
+
+}}
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+
+#endif // BOOST_FIBERS_RECURSIVE_MUTEX_H