Update contrib/restricted/boost/format to 1.79.0

2 files changed, 13 insertions, 0 deletions

diff --git a/library/cpp/yt/threading/fork_aware_spin_lock.cpp b/library/cpp/yt/threading/fork_aware_spin_lock.cpp
index 844d80ea7a..f43411b6d8 100644
--- a/library/cpp/yt/threading/fork_aware_spin_lock.cpp
+++ b/library/cpp/yt/threading/fork_aware_spin_lock.cpp
@@ -12,6 +12,18 @@ void TForkAwareSpinLock::Acquire() noexcept
     SpinLock_.Acquire();
 }
 
+bool TForkAwareSpinLock::TryAcquire() noexcept
+{
+    if (!GetForkLock()->TryAcquireReaderForkFriendly()) {
+        return false;
+    }
+    if (!SpinLock_.TryAcquire()) {
+        GetForkLock()->ReleaseReader();
+        return false;
+    }
+    return true;
+}
+
 void TForkAwareSpinLock::Release() noexcept
 {
     SpinLock_.Release();
diff --git a/library/cpp/yt/threading/fork_aware_spin_lock.h b/library/cpp/yt/threading/fork_aware_spin_lock.h
index c6487ce4b0..1d69aa1bca 100644
--- a/library/cpp/yt/threading/fork_aware_spin_lock.h
+++ b/library/cpp/yt/threading/fork_aware_spin_lock.h
@@ -24,6 +24,7 @@ public:
     { }
 
     void Acquire() noexcept;
+    bool TryAcquire() noexcept;
     void Release() noexcept;
 
     bool IsLocked() const noexcept;