Revert "YT-19324: move YT provider to ydb/library/yql"

This reverts commit ca272f12fdd0e8d5c3e957fc87939148f1caaf72, reversing
changes made to 49f8acfc8b0b5c0071b804423bcf53fda26c7c12.

1 files changed, 0 insertions, 62 deletions

diff --git a/library/cpp/dwarf_backtrace/backtrace.cpp b/library/cpp/dwarf_backtrace/backtrace.cpp
deleted file mode 100644
index a955d07249..0000000000
--- a/library/cpp/dwarf_backtrace/backtrace.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-#include "backtrace.h"
-
-#include <contrib/libs/backtrace/backtrace.h>
-
-#include <util/generic/yexception.h>
-#include <util/system/type_name.h>
-#include <util/system/execpath.h>
-
-namespace NDwarf {
-    namespace {
-        struct TContext {
-            TCallback& Callback;
-            int Counter = 0;
-            TMaybe<TError> Error;
-        };
-
-        void HandleLibBacktraceError(void* data, const char* msg, int errnum) {
-            auto* context = reinterpret_cast<TContext*>(data);
-            context->Error = TError{.Code = errnum, .Message=msg};
-        }
-
-        int HandleLibBacktraceFrame(void* data, uintptr_t pc, const char* filename, int lineno, const char* function) {
-            auto* context = reinterpret_cast<TContext*>(data);
-            TLineInfo lineInfo{
-                .FileName = filename != nullptr ? filename : "???",
-                .Line = lineno,
-                .Col = 0, // libbacktrace doesn't provide column numbers, so fill this field with a dummy value.
-                .FunctionName = function != nullptr ? CppDemangle(function) : "???",
-                .Address = pc,
-                .Index = context->Counter++,
-            };
-            return static_cast<int>(context->Callback(lineInfo));
-        }
-    }
-
-    TMaybe<TError> ResolveBacktrace(TArrayRef<const void* const> backtrace, TCallback callback) {
-        TContext context{.Callback = callback};
-        // Intentionally never freed (see https://a.yandex-team.ru/arc/trunk/arcadia/contrib/libs/backtrace/backtrace.h?rev=6789902#L80).
-        static auto* state = backtrace_create_state(
-            GetPersistentExecPath().c_str(),
-            1 /* threaded */,
-            HandleLibBacktraceError,
-            &context /* data for the error callback */
-        );
-        if (nullptr == state) {
-            static const auto initError = context.Error;
-            return initError;
-        }
-        for (const void* address : backtrace) {
-            int status = backtrace_pcinfo(
-                state,
-                reinterpret_cast<uintptr_t>(address) - 1, // last byte of the call instruction
-                HandleLibBacktraceFrame,
-                HandleLibBacktraceError,
-                &context /* data for both callbacks */);
-            if (0 != status) {
-                break;
-            }
-        }
-        return context.Error;
-    }
-}