Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 110 insertions, 0 deletions

diff --git a/src/boost/libs/lockfree/test/test_helpers.hpp b/src/boost/libs/lockfree/test/test_helpers.hpp
new file mode 100644
index 00000000..882fa1c4
--- /dev/null
+++ b/src/boost/libs/lockfree/test/test_helpers.hpp
@@ -0,0 +1,110 @@
+//  Copyright (C) 2011 Tim Blechmann
+//
+//  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)
+
+#ifndef BOOST_LOCKFREE_TEST_HELPERS
+#define BOOST_LOCKFREE_TEST_HELPERS
+
+#include <set>
+#include <boost/array.hpp>
+#include <boost/lockfree/detail/atomic.hpp>
+#include <boost/thread.hpp>
+
+#include <boost/cstdint.hpp>
+
+template <typename int_type>
+int_type generate_id(void)
+{
+    static boost::lockfree::detail::atomic<int_type> generator(0);
+    return ++generator;
+}
+
+template <typename int_type, size_t buckets>
+class static_hashed_set
+{
+
+public:
+    int calc_index(int_type id)
+    {
+        // knuth hash ... does not need to be good, but has to be portable
+        size_t factor = size_t((float)buckets * 1.616f);
+
+        return ((size_t)id * factor) % buckets;
+    }
+
+    bool insert(int_type const & id)
+    {
+        std::size_t index = calc_index(id);
+
+        boost::lock_guard<boost::mutex> lock (ref_mutex[index]);
+
+        std::pair<typename std::set<int_type>::iterator, bool> p;
+        p = data[index].insert(id);
+
+        return p.second;
+    }
+
+    bool find (int_type const & id)
+    {
+        std::size_t index = calc_index(id);
+
+        boost::lock_guard<boost::mutex> lock (ref_mutex[index]);
+
+        return data[index].find(id) != data[index].end();
+    }
+
+    bool erase(int_type const & id)
+    {
+        std::size_t index = calc_index(id);
+
+        boost::lock_guard<boost::mutex> lock (ref_mutex[index]);
+
+        if (data[index].find(id) != data[index].end()) {
+            data[index].erase(id);
+            assert(data[index].find(id) == data[index].end());
+            return true;
+        }
+        else
+            return false;
+    }
+
+    std::size_t count_nodes(void) const
+    {
+        std::size_t ret = 0;
+        for (int i = 0; i != buckets; ++i) {
+            boost::lock_guard<boost::mutex> lock (ref_mutex[i]);
+            ret += data[i].size();
+        }
+        return ret;
+    }
+
+private:
+    boost::array<std::set<int_type>, buckets> data;
+    mutable boost::array<boost::mutex, buckets> ref_mutex;
+};
+
+struct test_equal
+{
+    test_equal(int i):
+        i(i)
+    {}
+
+    void operator()(int arg) const
+    {
+        BOOST_REQUIRE_EQUAL(arg, i);
+    }
+
+    int i;
+};
+
+struct dummy_functor
+{
+    void operator()(int /* arg */) const
+    {
+    }
+};
+
+
+#endif