core, refactor: PumpMessageLoop only when there are background tasks.

fibjs · Mar 6, 2023 · 971acea · 971acea
1 parent 3188324
commit 971acea
Showing 1 changed file with 6 additions and 5 deletions.
diff --git a/fibjs/src/base/Isolate.cpp b/fibjs/src/base/Isolate.cpp
@@ -35,11 +35,12 @@ static int32_t syncRunMicrotasks(Isolate* isolate)
     JSFiber::EnterJsScope s(NULL, true);
 
     isolate->m_isolate->PerformMicrotaskCheckpoint();
-    while (v8::platform::PumpMessageLoop(g_default_platform, isolate->m_isolate,
-        isolate->m_isolate->HasPendingBackgroundTasks()
-            ? v8::platform::MessageLoopBehavior::kWaitForWork
-            : platform::MessageLoopBehavior::kDoNotWait))
-        ;
+    if (isolate->m_isolate->HasPendingBackgroundTasks())
+        while (v8::platform::PumpMessageLoop(g_default_platform, isolate->m_isolate,
+            isolate->m_isolate->HasPendingBackgroundTasks()
+                ? v8::platform::MessageLoopBehavior::kWaitForWork
+                : platform::MessageLoopBehavior::kDoNotWait))
+            ;
 
     return 0;
 }