SERVER-26389 Make javascript periodic interrupts disabled by default

(cherry picked from commit cb9e5e2f0a8ea4c47747e9eeac1aa4524092ea57)

2 files changed, 9 insertions, 5 deletions

diff --git a/src/mongo/scripting/deadline_monitor.cpp b/src/mongo/scripting/deadline_monitor.cpp
index 5eb0f52e5de..f75c34a0cc2 100644
--- a/src/mongo/scripting/deadline_monitor.cpp
+++ b/src/mongo/scripting/deadline_monitor.cpp
@@ -34,7 +34,7 @@
 
 namespace mongo {
 
-MONGO_EXPORT_SERVER_PARAMETER(scriptingEngineInterruptIntervalMS, int, 1000);
+MONGO_EXPORT_SERVER_PARAMETER(scriptingEngineInterruptIntervalMS, int, 0);
 
 int getScriptingEngineInterruptInterval() {
     return scriptingEngineInterruptIntervalMS.load();
diff --git a/src/mongo/scripting/deadline_monitor.h b/src/mongo/scripting/deadline_monitor.h
index b1c2855dd46..05acd5c349c 100644
--- a/src/mongo/scripting/deadline_monitor.h
+++ b/src/mongo/scripting/deadline_monitor.h
@@ -138,7 +138,7 @@ private:
             const Date_t now = Date_t::now();
             const auto interruptInterval = Milliseconds{getScriptingEngineInterruptInterval()};
 
-            if (now - lastInterruptCycle > interruptInterval) {
+            if ((interruptInterval.count() > 0) && (now - lastInterruptCycle > interruptInterval)) {
                 for (const auto& task : _tasks) {
                     if (task.second > now)
                         task.first->interrupt();
@@ -148,9 +148,13 @@ private:
 
             // wait for a task to be added or a deadline to expire
             if (_nearestDeadlineWallclock > now) {
-                if (_nearestDeadlineWallclock == Date_t::max() ||
-                    _nearestDeadlineWallclock - now > interruptInterval) {
-                    _newDeadlineAvailable.wait_for(lk, interruptInterval);
+                if (_nearestDeadlineWallclock == Date_t::max()) {
+                    if ((interruptInterval.count() > 0) &&
+                        (_nearestDeadlineWallclock - now > interruptInterval)) {
+                        _newDeadlineAvailable.wait_for(lk, interruptInterval);
+                    } else {
+                        _newDeadlineAvailable.wait(lk);
+                    }
                 } else {
                     _newDeadlineAvailable.wait_until(lk,
                                                      _nearestDeadlineWallclock.toSystemTimePoint());