Add retry logic to partition alloc

Source/web/WebKit.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 64 matching lines @@
         AnimationClock::notifyTaskStart();
     }
     virtual void didProcessTask() override
     {
         Microtask::performCheckpoint();
         V8GCController::reportDOMMemoryUsageToV8(mainThreadIsolate());
         V8Initializer::reportRejectedPromises();
     }
 };
 
+void partitionAlmostFullHandler()
+{
+    v8::Isolate* isolate = v8::Isolate::GetCurrent();
+    if (isolate)
+        isolate->LowMemoryNotification();
+}
+
 } // namespace
 
 static WebThread::TaskObserver* s_endOfTaskRunner = 0;
 static WebThread::TaskObserver* s_pendingGCRunner = 0;
 static ThreadState::Interruptor* s_messageLoopInterruptor = 0;
 static ThreadState::Interruptor* s_isolateInterruptor = 0;
 
 // Make sure we are not re-initialized in the same address space.
 // Doing so may cause hard to reproduce crashes.
 static bool s_webKitInitialized = false;
 
 void initialize(Platform* platform)
 {
     initializeWithoutV8(platform);
 
     V8Initializer::initializeMainThreadIfNeeded();
 
     s_isolateInterruptor = new V8IsolateInterruptor(V8PerIsolateData::mainThreadIsolate());
     ThreadState::current()->addInterruptor(s_isolateInterruptor);
     ThreadState::current()->registerTraceDOMWrappers(V8PerIsolateData::mainThreadIsolate(), V8GCController::traceDOMWrappers);
 
     // currentThread will always be non-null in production, but can be null in Chromium unit tests.
     if (WebThread* currentThread = platform->currentThread()) {
         ASSERT(!s_endOfTaskRunner);
         s_endOfTaskRunner = new EndOfTaskRunner;
         currentThread->addTaskObserver(s_endOfTaskRunner);
     }
+
+    partitionSetFreeUpMemoryCallback(partitionAlmostFullHandler);
 }
 
 v8::Isolate* mainThreadIsolate()
 {
     return V8PerIsolateData::mainThreadIsolate();
 }
 
 static double currentTimeFunction()
 {
     return Platform::current()->currentTime();
@@ skipping 76 matching lines @@
         ASSERT(s_pendingGCRunner);
         delete s_pendingGCRunner;
         s_pendingGCRunner = 0;
 
         ASSERT(s_messageLoopInterruptor);
         ThreadState::current()->removeInterruptor(s_messageLoopInterruptor);
         delete s_messageLoopInterruptor;
         s_messageLoopInterruptor = 0;
     }
 
+    partitionSetFreeUpMemoryCallback(nullptr);
+
     v8::Isolate* isolate = V8PerIsolateData::mainThreadIsolate();
     V8PerIsolateData::willBeDestroyed(isolate);
 
     // Make sure we stop WorkerThreads before the main thread's ThreadState
     // and later shutdown steps starts freeing up resources needed during
     // worker termination.
     WorkerThread::terminateAndWaitForAllWorkers();
 
     // Detach the main thread before starting the shutdown sequence
     // so that the main thread won't get involved in a GC during the shutdown.
@@ skipping 43 matching lines @@
         channel->state = WTFLogChannelOn;
 #endif // !LOG_DISABLED
 }
 
 void resetPluginCache(bool reloadPages)
 {
     Page::refreshPlugins(reloadPages);
 }
 
 } // namespace blink