SERVER-42363 Add test for backtrace on $currentOp

2 files changed, 6 insertions, 0 deletions

diff --git a/src/mongo/platform/mutex.cpp b/src/mongo/platform/mutex.cpp
index b5661cf6f53..47dd212c92c 100644
--- a/src/mongo/platform/mutex.cpp
+++ b/src/mongo/platform/mutex.cpp
@@ -45,6 +45,9 @@ void Mutex::lock() {
     }
     hasLock = _mutex.try_lock_for(_lockTimeout.toSystemDuration() -
                                   kContendedLockTimeout.toSystemDuration());
+    if (gLockActions && !hasLock) {
+        gLockActions->onFailedLock();
+    }
     uassert(
         ErrorCodes::InternalError, "Unable to take latch, wait time exceeds set timeout", hasLock);
 }
diff --git a/src/mongo/platform/mutex.h b/src/mongo/platform/mutex.h
index bb885d0cbe1..63fcb2ff892 100644
--- a/src/mongo/platform/mutex.h
+++ b/src/mongo/platform/mutex.h
@@ -41,12 +41,15 @@ public:
     virtual ~LockActions() = default;
     virtual void onContendedLock(const StringData& name) = 0;
     virtual void onUnlock() = 0;
+    virtual void onFailedLock() = 0;
 };
 
 class Mutex {
 public:
     Mutex() : Mutex("AnonymousMutex"_sd) {}
     explicit Mutex(const StringData& name) : _name(name) {}
+    explicit Mutex(const StringData& name, Seconds lockTimeout)
+        : _name(name), _lockTimeout(lockTimeout) {}
 
     void lock();
     void unlock();