Remove a workaround for ancient CUDA versions

`#define noexcept throw()` is a questionable idea, since replacing `noexcept` with `throw()` in expressions such as `noexcept(true)` results in spectacular compiler errors. We stopped supporting CUDA 8 (and even CUDA 9) long ago, which means we can just get rid of the problematic define.

3 files changed, 94 insertions, 7 deletions

diff --git a/library/cpp/yt/memory/serialize.h b/library/cpp/yt/memory/serialize.h
new file mode 100644
index 0000000000..03fc286515
--- /dev/null
+++ b/library/cpp/yt/memory/serialize.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include "new.h"
+
+////////////////////////////////////////////////////////////////////////////////
+
+template <class T>
+class TSerializer<NYT::TIntrusivePtr<T>>
+{
+public:
+    static inline void Save(IOutputStream* out, const NYT::TIntrusivePtr<T>& ptr)
+    {
+        bool hasValue = ptr.operator bool();
+        ::Save(out, hasValue);
+        if (hasValue) {
+            ::Save(out, *ptr);
+        }
+    }
+
+    static inline void Load(IInputStream* in, NYT::TIntrusivePtr<T>& ptr)
+    {
+        bool hasValue;
+        ::Load(in, hasValue);
+        if (hasValue) {
+            auto tmp = NYT::New<T>();
+            ::Load(in, *tmp);
+            ptr = std::move(tmp);
+        } else {
+            ptr.Reset();
+        }
+    }
+};
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/library/cpp/yt/memory/unittests/intrusive_ptr_ut.cpp b/library/cpp/yt/memory/unittests/intrusive_ptr_ut.cpp
index 5c35612ee0..9a94c82411 100644
--- a/library/cpp/yt/memory/unittests/intrusive_ptr_ut.cpp
+++ b/library/cpp/yt/memory/unittests/intrusive_ptr_ut.cpp
@@ -2,6 +2,11 @@
 
 #include <library/cpp/yt/memory/new.h>
 #include <library/cpp/yt/memory/ref_counted.h>
+#include <library/cpp/yt/memory/serialize.h>
+
+#include <util/generic/buffer.h>
+#include <util/stream/buffer.h>
+#include <util/ysaveload.h>
 
 namespace NYT {
 namespace {
@@ -556,6 +561,61 @@ TEST(TIntrusivePtrTest, InitStruct)
     New<TObj6>(1, 2);
 }
 
+TEST(TIntrusivePtrTest, Serialize)
+{
+    TBufferStream stream;
+
+    struct TObject
+        : public TRefCounted
+    {
+        ui64 Data;
+
+        TObject()
+            : Data(0)
+        { }
+        TObject(ui64 value)
+            : Data(value)
+        { }
+
+        inline void Save(IOutputStream* out) const
+        {
+            ::Save(out, Data);
+        }
+
+        inline void Load(IInputStream* in)
+        {
+            ::Load(in, Data);
+        }
+    };
+
+    ::Save(&stream, TIntrusivePtr<TObject>(nullptr));
+
+    bool hasValue = true;
+    ::Load(&stream, hasValue);
+    EXPECT_FALSE(hasValue);
+    EXPECT_EQ(stream.Buffer().Size(), 1ull);
+
+    auto data = New<TObject>(42ull);
+    ::Save(&stream, data);
+
+    ::Load(&stream, hasValue);
+    EXPECT_TRUE(hasValue);
+    data->Data = 0;
+    ::Load(&stream, data->Data);
+    EXPECT_EQ(data->Data, 42ull);
+
+    ::Save(&stream, data);
+    TIntrusivePtr<TObject> ptr;
+    ::Load(&stream, ptr);
+    EXPECT_TRUE(ptr);
+    EXPECT_EQ(data->Data, ptr->Data);
+
+    ptr = nullptr;
+    ::Save(&stream, TIntrusivePtr<TObject>(nullptr));
+    ::Load(&stream, ptr);
+    EXPECT_FALSE(ptr);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 
 } // namespace
diff --git a/util/system/compiler.h b/util/system/compiler.h
index e7aa4eac38..c7b73ed51d 100644
--- a/util/system/compiler.h
+++ b/util/system/compiler.h
@@ -332,13 +332,6 @@ _YandexAbort();
     #define Y_CUDA_AT_LEAST(x, y) 0
 #endif
 
-// NVidia CUDA C++ Compiler did not know about noexcept keyword until version 9.0
-#if !Y_CUDA_AT_LEAST(9, 0)
-    #if defined(__CUDACC__) && !defined(noexcept)
-        #define noexcept throw()
-    #endif
-#endif
-
 #if defined(__GNUC__)
     #define Y_COLD __attribute__((cold))
     #define Y_LEAF __attribute__((leaf))