eliminate session::operationg++, --

project-tsurugi · Feb 26, 2025 · 21d8f89 · 21d8f89
1 parent f78451c
commit 21d8f89
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Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/src/concurrency_control/epoch.cpp b/src/concurrency_control/epoch.cpp
@@ -23,13 +23,15 @@
 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) {
             // this session is not processing now.
             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
@@ -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() {