intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 76 insertions, 0 deletions

diff --git a/library/cpp/yt/misc/guid-inl.h b/library/cpp/yt/misc/guid-inl.h
new file mode 100644
index 00000000000..2d94b5701b0
--- /dev/null
+++ b/library/cpp/yt/misc/guid-inl.h
@@ -0,0 +1,76 @@
+#ifndef GUID_INL_H_
+#error "Direct inclusion of this file is not allowed, include guid.h"
+// For the sake of sane code completion.
+#include "guid.h"
+#endif
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+
+Y_FORCE_INLINE constexpr TGuid::TGuid()
+    : Parts32{}
+{ }
+
+Y_FORCE_INLINE constexpr TGuid::TGuid(ui32 part0, ui32 part1, ui32 part2, ui32 part3)
+    : Parts32{part0, part1, part2, part3}
+{ }
+
+Y_FORCE_INLINE constexpr TGuid::TGuid(ui64 part0, ui64 part1)
+    : Parts64{part0, part1}
+{ }
+
+Y_FORCE_INLINE bool TGuid::IsEmpty() const
+{
+    return Parts64[0] == 0 && Parts64[1] == 0;
+}
+
+Y_FORCE_INLINE TGuid::operator bool() const
+{
+    return !IsEmpty();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+Y_FORCE_INLINE bool operator == (TGuid lhs, TGuid rhs)
+{
+    return lhs.Parts64[0] == rhs.Parts64[0] &&
+           lhs.Parts64[1] == rhs.Parts64[1];
+}
+
+Y_FORCE_INLINE bool operator != (TGuid lhs, TGuid rhs)
+{
+    return !(lhs == rhs);
+}
+
+Y_FORCE_INLINE bool operator < (TGuid lhs, TGuid rhs)
+{
+#ifdef __GNUC__
+    ui64 lhs0 = __builtin_bswap64(lhs.Parts64[0]);
+    ui64 rhs0 = __builtin_bswap64(rhs.Parts64[0]);
+    if (lhs0 < rhs0) {
+        return true;
+    }
+    if (lhs0 > rhs0) {
+        return false;
+    }
+    ui64 lhs1 = __builtin_bswap64(lhs.Parts64[1]);
+    ui64 rhs1 = __builtin_bswap64(rhs.Parts64[1]);
+    return lhs1 < rhs1;
+#else
+    return memcmp(&lhs, &rhs, sizeof(TGuid)) < 0;
+#endif
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT
+
+Y_FORCE_INLINE size_t THash<NYT::TGuid>::operator()(const NYT::TGuid& guid) const
+{
+    const size_t p = 1000000009; // prime number
+    return guid.Parts32[0] +
+           guid.Parts32[1] * p +
+           guid.Parts32[2] * p * p +
+           guid.Parts32[3] * p * p * p;
+}