From 21d8f8907f7e64813390d0fbef726a2d4ef45b60 Mon Sep 17 00:00:00 2001
From: Nobuhiro Ban <ban@nautilus-technologies.com>
Date: Wed, 26 Feb 2025 18:55:53 +0900
Subject: [PATCH] eliminate session::operationg++, --

---
 src/concurrency_control/epoch.cpp         | 2 ++
 src/concurrency_control/include/session.h | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/concurrency_control/epoch.cpp b/src/concurrency_control/epoch.cpp
index 18eb9ea5..3b583110 100644
--- a/src/concurrency_control/epoch.cpp
+++ b/src/concurrency_control/epoch.cpp
@@ -23,6 +23,7 @@
 namespace shirakami::epoch {
 
 inline void check_epoch_load_and_update_idle_living_tx() {
+#if 0
     auto ce{epoch::get_global_epoch()};
     for (auto&& itr : session_table::get_session_table()) {
         if (itr.get_operating().load(std::memory_order_acquire) == 0) {
@@ -30,6 +31,7 @@ inline void check_epoch_load_and_update_idle_living_tx() {
             if (itr.get_step_epoch() < ce) { itr.set_step_epoch(ce); }
         }
     }
+#endif
 }
 
 inline void refresh_short_expose_ongoing_status(const epoch_t ce) {
diff --git a/src/concurrency_control/include/session.h b/src/concurrency_control/include/session.h
index 76179ca5..1bf5772a 100644
--- a/src/concurrency_control/include/session.h
+++ b/src/concurrency_control/include/session.h
@@ -410,10 +410,13 @@ class alignas(CACHE_LINE_SIZE) session {
     void process_before_start_step() {
         // make sure that step_epoch is set when operating becomes 0 to 1
         set_step_epoch(epoch::get_global_epoch());
+#if 0
         get_operating()++;
+#endif
     }
 
     void process_before_finish_step() {
+#if 0
         auto expected = get_operating().load(std::memory_order_acquire);
         for (;;) {
             if (expected == 0) {
@@ -428,6 +431,7 @@ class alignas(CACHE_LINE_SIZE) session {
                 break;
             }
         }
+#endif
     }
 
     void clear_ltx_storage_read_set() {