Initial PSTL commit

The initial commit of the Parallel STL upstream (under LLVM umbrella) based on
Parallel STL 20181204 open source release, which is available by
https://github.com/intel/parallelstl

Author: Mikhail Dvorskiy <mikhail.dvorskiy@intel.com>

Differential Revision: https://reviews.llvm.org/D55889

llvm-svn: 349653

1 files changed, 121 insertions, 0 deletions

diff --git a/pstl/test/test_uninitialized_construct.cpp b/pstl/test/test_uninitialized_construct.cpp
new file mode 100644
index 00000000000..a3caa58b09e
--- /dev/null
+++ b/pstl/test/test_uninitialized_construct.cpp
@@ -0,0 +1,121 @@
+// -*- C++ -*-
+//===-- test_uninitialized_construct.cpp ----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// Tests for uninitialized_default_consruct, uninitialized_default_consruct_n,
+//           uninitialized_value_consruct,   uninitialized_value_consruct_n
+
+#include "pstl_test_config.h"
+
+#include "pstl/execution"
+#include "pstl/memory"
+#include "utils.h"
+
+using namespace TestUtils;
+
+// function of checking correctness for uninitialized.construct.value
+template <typename T, typename Iterator>
+bool
+IsCheckValueCorrectness(Iterator begin, Iterator end)
+{
+    for (; begin != end; ++begin)
+    {
+        if (*begin != T())
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
+struct test_uninit_construct
+{
+    template <typename Policy, typename Iterator>
+    void
+    operator()(Policy&& exec, Iterator begin, Iterator end, size_t n, /*is_trivial<T>=*/std::false_type)
+    {
+        typedef typename std::iterator_traits<Iterator>::value_type T;
+        // it needs for cleaning memory that was filled by default constructors in unique_ptr<T[]> p(new T[n])
+        // and for cleaning memory after last calling of uninitialized_value_construct_n.
+        // It is important for non-trivial types
+        std::destroy_n(exec, begin, n);
+
+        // reset counter of constructors
+        T::SetCount(0);
+        // run algorithm
+        std::uninitialized_default_construct(exec, begin, end);
+        // compare counter of constructors to length of container
+        EXPECT_TRUE(T::Count() == n, "wrong uninitialized_default_construct");
+        // destroy objects for testing new algorithms on same memory
+        std::destroy(exec, begin, end);
+
+        std::uninitialized_default_construct_n(exec, begin, n);
+        EXPECT_TRUE(T::Count() == n, "wrong uninitialized_default_construct_n");
+        std::destroy_n(exec, begin, n);
+
+        std::uninitialized_value_construct(exec, begin, end);
+        EXPECT_TRUE(T::Count() == n, "wrong uninitialized_value_construct");
+        std::destroy(exec, begin, end);
+
+        std::uninitialized_value_construct_n(exec, begin, n);
+        EXPECT_TRUE(T::Count() == n, "wrong uninitialized_value_construct_n");
+    }
+
+    template <typename Policy, typename Iterator>
+    void
+    operator()(Policy&& exec, Iterator begin, Iterator end, size_t n, /*is_trivial<T>=*/std::true_type)
+    {
+        typedef typename std::iterator_traits<Iterator>::value_type T;
+
+        std::uninitialized_default_construct(exec, begin, end);
+        std::destroy(exec, begin, end);
+
+        std::uninitialized_default_construct_n(exec, begin, n);
+        std::destroy_n(exec, begin, n);
+
+        std::uninitialized_value_construct(exec, begin, end);
+        // check correctness for uninitialized.construct.value
+        EXPECT_TRUE(IsCheckValueCorrectness<T>(begin, end), "wrong uninitialized_value_construct");
+        std::destroy(exec, begin, end);
+
+        std::uninitialized_value_construct_n(exec, begin, n);
+        EXPECT_TRUE(IsCheckValueCorrectness<T>(begin, end), "wrong uninitialized_value_construct_n");
+        std::destroy_n(exec, begin, n);
+    }
+};
+
+template <typename T>
+void
+test_uninit_construct_by_type()
+{
+    std::size_t N = 100000;
+    for (size_t n = 0; n <= N; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
+    {
+        std::unique_ptr<T[]> p(new T[n]);
+        invoke_on_all_policies(test_uninit_construct(), p.get(), std::next(p.get(), n), n, std::is_trivial<T>());
+    }
+}
+
+int32_t
+main()
+{
+
+    // for user-defined types
+#if !__PSTL_ICC_16_VC14_TEST_PAR_TBB_RT_RELEASE_64_BROKEN
+    test_uninit_construct_by_type<Wrapper<int32_t>>();
+    test_uninit_construct_by_type<Wrapper<std::vector<std::string>>>();
+#endif
+
+    // for trivial types
+    test_uninit_construct_by_type<int8_t>();
+    test_uninit_construct_by_type<float64_t>();
+
+    std::cout << done() << std::endl;
+    return 0;
+}