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/messagebus/cc_semaphore.h | 36 +++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 library/cpp/messagebus/cc_semaphore.h
(limited to 'library/cpp/messagebus/cc_semaphore.h')
diff --git a/library/cpp/messagebus/cc_semaphore.h b/library/cpp/messagebus/cc_semaphore.h
new file mode 100644
index 0000000000..0df8a3d664
--- /dev/null
+++ b/library/cpp/messagebus/cc_semaphore.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include "latch.h"
+
+template <typename TThis>
+class TComplexConditionSemaphore {
+private:
+ TLatch Latch;
+
+public:
+ void Updated() {
+ if (GetThis()->TryWait()) {
+ Latch.Unlock();
+ }
+ }
+
+ void Wait() {
+ while (!GetThis()->TryWait()) {
+ Latch.Lock();
+ if (GetThis()->TryWait()) {
+ Latch.Unlock();
+ return;
+ }
+ Latch.Wait();
+ }
+ }
+
+ bool IsLocked() {
+ return Latch.IsLocked();
+ }
+
+private:
+ TThis* GetThis() {
+ return static_cast<TThis*>(this);
+ }
+};
--
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