[49/73] [abbrv] incubator-quickstep git commit: Initial commit for QUICKSTEP-28 and QUICKSTEP-29. Code refactoring and cleanup, some more optimizations are pending.

[hb...@apache.org]

http://git-wip-us.apache.org/repos/asf/incubator-quickstep/blob/169ae326/storage/StorageBlock.hpp
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diff --git a/storage/StorageBlock.hpp b/storage/StorageBlock.hpp
index 97b4773..8b59a3c 100644
--- a/storage/StorageBlock.hpp
+++ b/storage/StorageBlock.hpp
@@ -468,6 +468,14 @@ class StorageBlock : public StorageBlockBase {
                         std::vector<std::unique_ptr<ColumnVector>>
                             *reuse_group_by_vectors) const;
 
+
+  void aggregateGroupByFast(const std::vector<std::vector<std::unique_ptr<const Scalar>>> &arguments,
+                        const std::vector<std::unique_ptr<const Scalar>> &group_by,
+                        const Predicate *predicate,
+                        AggregationStateHashTableBase *hash_table,
+                        std::unique_ptr<TupleIdSequence> *reuse_matches,
+                        std::vector<std::unique_ptr<ColumnVector>>
+                            *reuse_group_by_vectors) const;
   /**
    * @brief Inserts the GROUP BY expressions and aggregation arguments together
    *        as keys into the distinctify hash table.

http://git-wip-us.apache.org/repos/asf/incubator-quickstep/blob/169ae326/threading/SpinMutex.hpp
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diff --git a/threading/SpinMutex.hpp b/threading/SpinMutex.hpp
index 5ed1405..106ef13 100644
--- a/threading/SpinMutex.hpp
+++ b/threading/SpinMutex.hpp
@@ -44,6 +44,8 @@ class SpinMutex {
   SpinMutex() : locked_(false) {
   }
 
+  explicit SpinMutex(uint8_t *ptr): locked_(*ptr) {}
+
   /**
    * @note This call does NOT yield when contended. SpinMutex is intended
    *       mainly for cases where locks are held briefly and it is better to