From: Casey Bodley <cbodley@redhat.com>
Date: Fri, 1 Aug 2025 15:42:56 +0000 (-0400)
Subject: rgw/asio: add scope guard warn_about_blocking_in_scope
X-Git-Tag: testing/wip-vshankar-testing-20251027.053005-debug~24^2~4
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=bd20e7bd1de70ba0ee3e11a1bcddfb3e11328b06;p=ceph-ci.git

rgw/asio: add scope guard warn_about_blocking_in_scope

Signed-off-by: Casey Bodley <cbodley@redhat.com>
---

diff --git a/src/rgw/rgw_asio_thread.h b/src/rgw/rgw_asio_thread.h
index 788f8ee295d..68fad088f25 100644
--- a/src/rgw/rgw_asio_thread.h
+++ b/src/rgw/rgw_asio_thread.h
@@ -15,6 +15,8 @@
 
 #pragma once
 
+#include <assert.h>
+
 class DoutPrefixProvider;
 
 /// indicates whether the current thread is in boost::asio::io_context::run(),
@@ -24,3 +26,14 @@ extern thread_local bool is_asio_thread;
 /// call when an operation will block the calling thread due to an empty
 /// optional_yield. a warning is logged when is_asio_thread is true
 void maybe_warn_about_blocking(const DoutPrefixProvider* dpp);
+
+/// enables warnings while in scope. these scopes must not be nested
+struct warn_about_blocking_in_scope {
+  warn_about_blocking_in_scope() {
+    assert(!is_asio_thread);
+    is_asio_thread = true;
+  }
+  ~warn_about_blocking_in_scope() {
+    is_asio_thread = false;
+  }
+};