IGNIETFERRO-1975, BIGRT-39: add TBackTrace::FromCurrentException() to CurrentExceptionMessage()

support TBackTrace::FromCurrentException() in CurrentExceptionMessage()

ref:ca43c6538722fc9d169d92f85395093a21136884

1 files changed, 24 insertions, 6 deletions

diff --git a/util/generic/yexception.cpp b/util/generic/yexception.cpp
index 26c75b5f51d..7bfed2878d0 100644
--- a/util/generic/yexception.cpp
+++ b/util/generic/yexception.cpp
@@ -14,21 +14,39 @@ TString FormatExc(const std::exception& exception) {
     return TString::Join(TStringBuf("("), TypeName(exception), TStringBuf(") "), exception.what());
 }
 
+static TString BackTraceToString(const TBackTrace& backtrace) {
+    try {
+        Y_ENSURE(backtrace.size() > 0, "backtrace is empty");
+        return backtrace.PrintToString();
+    } catch (const std::exception& e) {
+        return TString::Join("Failed to print backtrace: ", FormatExc(e));
+    }
+}
+
 TString CurrentExceptionMessage() {
     auto exceptionPtr = std::current_exception();
     if (exceptionPtr) {
         try {
             std::rethrow_exception(exceptionPtr);
         } catch (const yexception& e) {
-            const TBackTrace* bt = e.BackTrace();
-
-            if (bt) {
-                return TString::Join(bt->PrintToString(), TStringBuf("\n"), FormatExc(e));
+            const TBackTrace* btPtr;
+#ifdef _YNDX_LIBUNWIND_ENABLE_EXCEPTION_BACKTRACE
+            TBackTrace backtrace = TBackTrace::FromCurrentException();
+            btPtr = &backtrace;
+#else
+            btPtr = e.BackTrace();
+            if (!btPtr) {
+                return FormatExc(e);
             }
-
-            return FormatExc(e);
+#endif
+            return TString::Join(BackTraceToString(*btPtr), TStringBuf("\n"), FormatExc(e));
         } catch (const std::exception& e) {
+#ifdef _YNDX_LIBUNWIND_ENABLE_EXCEPTION_BACKTRACE
+            TBackTrace backtrace = TBackTrace::FromCurrentException();
+            return TString::Join(BackTraceToString(backtrace), TStringBuf("\n"), FormatExc(e));
+#else
             return FormatExc(e);
+#endif
         } catch (...) {
         }