From 928c1825f09d840a73d75889a21a68871e8f3164 Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Fri, 2 Feb 2018 22:33:53 +0000
Subject: [PATCH] cryptonote_protocol: guard against all threads in standby
---
src/cryptonote_protocol/cryptonote_protocol_handler.inl | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler.inl b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
index bc11ab6e4..e14040299 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler.inl
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
@@ -1333,6 +1333,15 @@ skip:
break;
}
+ // this one triggers if all threads are in standby, which should not happen,
+ // but happened at least once, so we unblock at least one thread if so
+ const boost::unique_lock<boost::mutex> sync{m_sync_lock, boost::try_to_lock};
+ if (sync.owns_lock())
+ {
+ LOG_DEBUG_CC(context, "No other thread is adding blocks, resuming");
+ break;
+ }
+
if (should_download_next_span(context))
{
MDEBUG(context << " we should try for that next span too, we think we could get it faster, resuming");