From 349cfd5090f586b7ec189b72c00786522199fe34 Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <dbr4@psu.edu>
Date: Wed, 1 May 2024 16:03:19 -0400
Subject: TS BSM Adjustments

---
 benchmarks/include/triespline_bsm.h | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

(limited to 'benchmarks/include/triespline_bsm.h')

diff --git a/benchmarks/include/triespline_bsm.h b/benchmarks/include/triespline_bsm.h
index dfddc43..eaf1079 100644
--- a/benchmarks/include/triespline_bsm.h
+++ b/benchmarks/include/triespline_bsm.h
@@ -18,11 +18,19 @@ public:
 
 public:
     static BSMTrieSpline *build(std::vector<R> &records) {
+        if (records.size() == 0) {
+            return nullptr;
+        }
+
         std::sort(records.begin(), records.end());
         return new BSMTrieSpline(records);
     }
 
     static BSMTrieSpline *build_presorted(std::vector<R> &records) {
+        if (records.size() == 0) {
+            return nullptr;
+        }
+
         return new BSMTrieSpline(records);
     }
 
@@ -44,8 +52,9 @@ public:
         size_t idx = lower_bound(parms->lower_bound);
 
         size_t cnt = 0;
-        while (idx < m_data.size() && m_data[idx].first < parms->upper_bound) {
+        while (idx < m_data.size() && m_data[idx].first <= parms->upper_bound) {
             cnt++;
+            idx++;
         }
 
         rs.push_back({cnt, 0});
@@ -54,6 +63,10 @@ public:
     }
 
     std::vector<R> query_merge(std::vector<R> &rsa, std::vector<R> &rsb, void *parms) {
+        /* initialize rsa on the first merge */
+        if (rsa.size() == 0) {
+            rsa.push_back({0, 0});
+        }
         rsa[0].first += rsb[0].first;
         return std::move(rsa);
     }
@@ -75,6 +88,10 @@ private:
         m_min_key = m_data[0].first;
         m_max_key = m_data[m_data.size() - 1].first;
 
+        if (m_data.size() < 50) {
+            return;
+        }
+
         auto bldr = ts::Builder<K>(m_min_key, m_max_key, E);
         for (size_t i=0; i<m_data.size(); i++) {
             bldr.AddKey(m_data[i].first);
@@ -88,12 +105,14 @@ private:
     size_t lower_bound(K key) {
         if (m_data.size() == 0) {
             return 1;
-        } else if (m_data.size() == 1) {
-            if (m_data[0].first < key) {
-                return 1;
-            } else {
-                return 0;
+        } else if (m_data.size() < 50) {
+            for (size_t i=0; i<m_data.size(); i++) {
+                if (m_data[i].first >= key) {
+                    return i;
+                }
             }
+
+            return m_data.size();
         }
 
         auto bound = m_ts.GetSearchBound(key);
-- 
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