Stubbed out base minimum of MS' PPL use for non-Windows platforms

1 files changed, 43 insertions, 0 deletions

diff --git a/zen/cmds/hash.cpp b/zen/cmds/hash.cpp
index d9d137f61..a676221e1 100644
--- a/zen/cmds/hash.cpp
+++ b/zen/cmds/hash.cpp
@@ -13,6 +13,49 @@
 
 namespace zen {
 
+////////////////////////////////////////////////////////////////////////////////
+
+#if ZEN_PLATFORM_LINUX || ZEN_PLATFORM_MAC
+
+namespace Concurrency
+{
+
+template <typename IterType, typename LambdaType> void
+parallel_for_each(IterType Cursor, IterType End, const LambdaType& Lambda)
+{
+	for (; Cursor < End; ++Cursor)
+	{
+		Lambda(*Cursor);
+	}
+}
+
+template <typename T>
+struct combinable
+{
+	combinable<T>& local()
+	{
+		return *this;
+	}
+
+	void operator += (T Rhs)
+	{
+		Value += Rhs;
+	}
+
+	template <typename LambdaType> void combine_each(const LambdaType& Lambda)
+	{
+		Lambda(Value);
+	}
+
+	T Value = 0;
+};
+
+} // namespace Concurrency
+
+#endif // ZEN_PLATFORM_LINUX|MAC
+
+////////////////////////////////////////////////////////////////////////////////
+
 HashCommand::HashCommand()
 {
 	m_Options.add_options()("d,dir", "Directory to scan", cxxopts::value<std::string>(m_ScanDirectory))(