From 7fa91ec175452823e04dba199bc48df12d3a64f0 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Sun, 14 Dec 2014 15:31:49 +0100
Subject: [PATCH] lib/nfs/Connection: add debug flag "in_destroy"

---
 src/lib/nfs/Connection.cxx | 6 ++++++
 src/lib/nfs/Connection.hxx | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/src/lib/nfs/Connection.cxx b/src/lib/nfs/Connection.cxx
index 56abf7129..4b6a6fc78 100644
--- a/src/lib/nfs/Connection.cxx
+++ b/src/lib/nfs/Connection.cxx
@@ -374,6 +374,11 @@ NfsConnection::DestroyContext()
 	assert(GetEventLoop().IsInside());
 	assert(context != nullptr);
 
+#ifndef NDEBUG
+	assert(!in_destroy);
+	in_destroy = true;
+#endif
+
 	/* cancel pending DeferredMonitor that was scheduled to notify
 	   new leases */
 	DeferredMonitor::Cancel();
@@ -558,6 +563,7 @@ NfsConnection::MountInternal(Error &error)
 #ifndef NDEBUG
 	in_service = false;
 	in_event = false;
+	in_destroy = false;
 #endif
 
 	if (nfs_mount_async(context, server.c_str(), export_name.c_str(),
diff --git a/src/lib/nfs/Connection.hxx b/src/lib/nfs/Connection.hxx
index e47ba404b..310ccdc44 100644
--- a/src/lib/nfs/Connection.hxx
+++ b/src/lib/nfs/Connection.hxx
@@ -129,6 +129,11 @@ class NfsConnection : SocketMonitor, DeferredMonitor {
 	 * event updates are omitted.
 	 */
 	bool in_event;
+
+	/**
+	 * True when DestroyContext() is being called.
+	 */
+	bool in_destroy;
 #endif
 
 	bool mount_finished;