From 909e306757b2da405daed2e0838e11b65e033c1a Mon Sep 17 00:00:00 2001
From: kulikov <kulikov@yandex-team.com>
Date: Fri, 28 Nov 2025 00:32:45 +0300
Subject: Use generic thread-local value for kernel/groupattrs, crash context
 and eventlog scope

- fix StdThreadLocalImpl -- make static state refcounted, there is no guarantee that static fields will outlive threads or TThreadLocalValues;
- replace thread local values to generic local storage value in some places;
- call runtime Init and replace local values factory;
- don't disable NCurrentThreadEventlog for ytxx runtime, it should now work;
- ensure generic local storage values are allocated after runtime init;
- use function-scope static variables to prevent issues with order of construction and destruction;
- basesearch now almost works with coroutines (with NProfile disabled).
commit_hash:7fde81591b0dbc3a53b8d1cb11bb96930a2e9a80
---
 library/cpp/threading/thread_local/generic.cpp | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

(limited to 'library/cpp/threading/thread_local/generic.cpp')

diff --git a/library/cpp/threading/thread_local/generic.cpp b/library/cpp/threading/thread_local/generic.cpp
index 41e1b381672..79161a846da 100644
--- a/library/cpp/threading/thread_local/generic.cpp
+++ b/library/cpp/threading/thread_local/generic.cpp
@@ -14,17 +14,29 @@ namespace {
         NThreading::TThreadLocalValue<TData, NThreading::EThreadLocalImpl::StdThreadLocal> Data_;
     };
 
-    NThreading::TGenericLocalStorageFactory genericLocalStorageFactory = []() {
-        return MakeHolder<TThreadLocalStorage>();
-    };
+    std::atomic<size_t>& DefaultFactoryUsageCounter() {
+        static std::atomic<size_t> v;
+        return v;
+    }
+
+    auto& genericLocalStorageFactory() {
+        static NThreading::TGenericLocalStorageFactory factory = [] {
+            DefaultFactoryUsageCounter() += 1;
+            return MakeHolder<TThreadLocalStorage>();
+        };
+
+        return factory;
+    }
 }
 
 namespace NThreading {
     void SetGenericLocalStorageFactory(TGenericLocalStorageFactory factory) {
-        genericLocalStorageFactory = factory;
+        Y_ENSURE(DefaultFactoryUsageCounter() == 0, "There are some thread local values allocated with default factory");
+
+        genericLocalStorageFactory() = factory;
     }
 
     THolder<IGenericLocalStorage> MakeGenericLocalStorage() {
-        return genericLocalStorageFactory();
+        return genericLocalStorageFactory()();
     }
 }
-- 
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