This is an automated email from the ASF dual-hosted git repository.
eze pushed a commit to branch 8.1.x
in repository https://gitbox.apache.org/repos/asf/trafficserver.git
The following commit(s) were added to refs/heads/8.1.x by this push:
new 512cf1e Add thread yeield to avoid busy waiting in
LogObject::_checkout_write(). (#7576) (#7906)
512cf1e is described below
commit 512cf1efb4f75ec7a6e69b3cd2d299956fd70454
Author: Walt Karas <[email protected]>
AuthorDate: Tue Jun 1 11:45:14 2021 -0500
Add thread yeield to avoid busy waiting in LogObject::_checkout_write().
(#7576) (#7906)
(cherry picked from commit f278427b1ecdc5ce9e758de51a7faf83bcc58643)
---
proxy/logging/LogObject.cc | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/proxy/logging/LogObject.cc b/proxy/logging/LogObject.cc
index 0351005..10dfcc1 100644
--- a/proxy/logging/LogObject.cc
+++ b/proxy/logging/LogObject.cc
@@ -39,6 +39,7 @@
#include <algorithm>
#include <vector>
+#include <thread>
static bool
should_roll_on_time(Log::RollingEnabledValues roll)
@@ -462,7 +463,9 @@ LogObject::_checkout_write(size_t *write_offset, size_t
bytes_needed)
break;
case LogBuffer::LB_RETRY:
- // no more room, but another thread should be taking care of creating a
new buffer, so try again
+ // no more room, but another thread should be taking care of creating a
new buffer, so yield to let
+ // the other thread finish, then try again
+ std::this_thread::yield();
break;
case LogBuffer::LB_BUFFER_TOO_SMALL:
