From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 8 Jan 2017 18:55:17 +0000 (+0000)
Subject: gpg agent lockup fix: Interrupt main loop when active_connections_value==0
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=gnupg2.git;a=commitdiff_plain;h=refs%2Fheads%2F841143-bugfix;hp=d3c45bccfc81e9b33f8fc289c252d4cdeeadbd15

gpg agent lockup fix: Interrupt main loop when active_connections_value==0

Otherwise, if this happens (in a parallel thread) after the main loop
found shutdown_pending and checked active_connections>=0, the main
loop could enter a select which would never wake up.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

MORE
---

diff --git a/agent/gpg-agent.c b/agent/gpg-agent.c
index 836b317..121bb0e 100644
--- a/agent/gpg-agent.c
+++ b/agent/gpg-agent.c
@@ -2029,6 +2029,8 @@ adjust_agent_active_connections (int delta)
 {
   lock_active_connections();
   active_connections_value += delta;
+  if (active_connections_value == 0)
+    interrupt_main_thread_loop ();
   unlock_active_connections();
 }