intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 40 insertions, 0 deletions

diff --git a/library/cpp/messagebus/actor/temp_tls_vector.h b/library/cpp/messagebus/actor/temp_tls_vector.h
new file mode 100644
index 00000000000..675d92f5b0b
--- /dev/null
+++ b/library/cpp/messagebus/actor/temp_tls_vector.h
@@ -0,0 +1,40 @@
+#pragma once
+
+#include "thread_extra.h"
+
+#include <util/generic/vector.h>
+#include <util/system/yassert.h>
+
+template <typename T, typename TTag = void, template <typename, class> class TVectorType = TVector>
+class TTempTlsVector {
+private:
+    struct TTagForTls {};
+
+    TVectorType<T, std::allocator<T>>* Vector;
+
+public:
+    TVectorType<T, std::allocator<T>>* GetVector() {
+        return Vector;
+    }
+
+    TTempTlsVector() {
+        Vector = FastTlsSingletonWithTag<TVectorType<T, std::allocator<T>>, TTagForTls>();
+        Y_ASSERT(Vector->empty());
+    }
+
+    ~TTempTlsVector() {
+        Clear();
+    }
+
+    void Clear() {
+        Vector->clear();
+    }
+
+    size_t Capacity() const noexcept {
+        return Vector->capacity();
+    }
+
+    void Shrink() {
+        Vector->shrink_to_fit();
+    }
+};