From 1110808a9d39d4b808aef724c861a2e1a38d2a69 Mon Sep 17 00:00:00 2001
From: Devtools Arcadia <arcadia-devtools@yandex-team.ru>
Date: Mon, 7 Feb 2022 18:08:42 +0300
Subject: intermediate changes ref:cde9a383711a11544ce7e107a78147fb96cc4029
---
library/cpp/monlib/metrics/atomics_array.h | 52 ++++++++++++++++++++++++++++++
1 file changed, 52 insertions(+)
create mode 100644 library/cpp/monlib/metrics/atomics_array.h
(limited to 'library/cpp/monlib/metrics/atomics_array.h')
diff --git a/library/cpp/monlib/metrics/atomics_array.h b/library/cpp/monlib/metrics/atomics_array.h
new file mode 100644
index 0000000000..f19aebf291
--- /dev/null
+++ b/library/cpp/monlib/metrics/atomics_array.h
@@ -0,0 +1,52 @@
+#pragma once
+
+#include <util/generic/ptr.h>
+#include <util/generic/vector.h>
+
+#include <atomic>
+
+namespace NMonitoring {
+ class TAtomicsArray {
+ public:
+ explicit TAtomicsArray(size_t size)
+ : Values_(new std::atomic<ui64>[size])
+ , Size_(size)
+ {
+ for (size_t i = 0; i < Size_; i++) {
+ Values_[i].store(0, std::memory_order_relaxed);
+ }
+ }
+
+ ui64 operator[](size_t index) const noexcept {
+ Y_VERIFY_DEBUG(index < Size_);
+ return Values_[index].load(std::memory_order_relaxed);
+ }
+
+ size_t Size() const noexcept {
+ return Size_;
+ }
+
+ void Add(size_t index, ui32 count) noexcept {
+ Y_VERIFY_DEBUG(index < Size_);
+ Values_[index].fetch_add(count, std::memory_order_relaxed);
+ }
+
+ void Reset() noexcept {
+ for (size_t i = 0; i < Size_; i++) {
+ Values_[i].store(0, std::memory_order_relaxed);
+ }
+ }
+
+ TVector<ui64> Copy() const {
+ TVector<ui64> copy(Reserve(Size_));
+ for (size_t i = 0; i < Size_; i++) {
+ copy.push_back(Values_[i].load(std::memory_order_relaxed));
+ }
+ return copy;
+ }
+
+ private:
+ TArrayHolder<std::atomic<ui64>> Values_;
+ size_t Size_;
+ };
+}
--
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