SERVER-27727 Hide idle threads in hang analyzer (extras)

1 files changed, 6 insertions, 2 deletions

diff --git a/src/mongo/db/range_deleter.cpp b/src/mongo/db/range_deleter.cpp
index f26ceec85c8..cfd983bc686 100644
--- a/src/mongo/db/range_deleter.cpp
+++ b/src/mongo/db/range_deleter.cpp
@@ -40,6 +40,7 @@
 #include "mongo/db/service_context.h"
 #include "mongo/db/write_concern_options.h"
 #include "mongo/stdx/memory.h"
+#include "mongo/util/concurrency/idle_thread_block.h"
 #include "mongo/util/exit.h"
 #include "mongo/util/log.h"
 #include "mongo/util/mongoutils/str.h"
@@ -425,8 +426,11 @@ void RangeDeleter::doWork() {
         {
             stdx::unique_lock<stdx::mutex> sl(_queueMutex);
             while (_taskQueue.empty()) {
-                _taskQueueNotEmptyCV.wait_for(
-                    sl, Milliseconds(kNotEmptyTimeoutMillis).toSystemDuration());
+                {
+                    IdleThreadBlock markIdle;
+                    _taskQueueNotEmptyCV.wait_for(
+                        sl, Milliseconds(kNotEmptyTimeoutMillis).toSystemDuration());
+                }
 
                 if (stopRequested()) {
                     log() << "stopping range deleter worker" << endl;