YT-22593: Switch (some) trace context tags to std::string and refactor code around [TRIVIAL]

643d86a500b7db9df11009f54364b468b29a409a

4 files changed, 67 insertions, 0 deletions

diff --git a/library/cpp/yt/memory/allocation_tags.h b/library/cpp/yt/memory/allocation_tags.h
new file mode 100644
index 00000000000..5bd0f415c60
--- /dev/null
+++ b/library/cpp/yt/memory/allocation_tags.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <string>
+#include <utility>
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+
+using TAllocationTagKey = std::string;
+using TAllocationTagValue = std::string;
+using TAllocationTag = std::pair<TAllocationTagKey, TAllocationTagValue>;
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT
diff --git a/library/cpp/yt/memory/allocation_tags_hooks.cpp b/library/cpp/yt/memory/allocation_tags_hooks.cpp
new file mode 100644
index 00000000000..dc6d531f3e8
--- /dev/null
+++ b/library/cpp/yt/memory/allocation_tags_hooks.cpp
@@ -0,0 +1,27 @@
+#include "allocation_tags_hooks.h"
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+
+Y_WEAK const TAllocationTagsHooks& GetAllocationTagsHooks()
+{
+    static const TAllocationTagsHooks hooks{
+        .CreateAllocationTags = [] () -> void* {
+            return nullptr;
+        },
+        .CopyAllocationTags = [] (void* /*opaque*/) -> void* {
+            return nullptr;
+        },
+        .DestroyAllocationTags = [] (void* /*opaque*/) {
+        },
+        .ReadAllocationTags = [] (void* /*opaque*/) -> TRange<TAllocationTag> {
+            return {};
+        },
+    };
+    return hooks;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT
diff --git a/library/cpp/yt/memory/allocation_tags_hooks.h b/library/cpp/yt/memory/allocation_tags_hooks.h
new file mode 100644
index 00000000000..57673f68b0a
--- /dev/null
+++ b/library/cpp/yt/memory/allocation_tags_hooks.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include "allocation_tags.h"
+
+#include <library/cpp/yt/memory/range.h>
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+
+struct TAllocationTagsHooks
+{
+    void* (*CreateAllocationTags)();
+    void* (*CopyAllocationTags)(void* opaque);
+    void (*DestroyAllocationTags)(void* opaque);
+    TRange<TAllocationTag> (*ReadAllocationTags)(void* opaque);
+};
+
+const TAllocationTagsHooks& GetAllocationTagsHooks();
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT
diff --git a/library/cpp/yt/memory/ya.make b/library/cpp/yt/memory/ya.make
index 9dc43727291..c2d78b0d079 100644
--- a/library/cpp/yt/memory/ya.make
+++ b/library/cpp/yt/memory/ya.make
@@ -3,6 +3,7 @@ LIBRARY()
 INCLUDE(${ARCADIA_ROOT}/library/cpp/yt/ya_cpp.make.inc)
 
 SRCS(
+    allocation_tags_hooks.cpp
     blob.cpp
     chunked_input_stream.cpp
     chunked_memory_allocator.cpp