Title: [264315] trunk
Revision
264315
Author
gga...@apple.com
Date
2020-07-13 13:43:08 -0700 (Mon, 13 Jul 2020)

Log Message

Unreviewed, re-landing r264242 with crash fixed.

Re-landed changeset:

"JSRunLoopTimer should use WTF::RunLoop rather than custom CF
code"
https://bugs.webkit.org/show_bug.cgi?id=214102
https://trac.webkit.org/changeset/264242


Source/_javascript_Core:

* runtime/JSRunLoopTimer.cpp:
(JSC::epochTime):
(JSC::JSRunLoopTimer::Manager::PerVMData::PerVMData):
(JSC::JSRunLoopTimer::Manager::timerDidFireCallback):
(JSC::JSRunLoopTimer::Manager::PerVMData::~PerVMData):
(JSC::JSRunLoopTimer::Manager::timerDidFire):
(JSC::JSRunLoopTimer::Manager::registerVM):
(JSC::JSRunLoopTimer::Manager::scheduleTimer):
(JSC::JSRunLoopTimer::Manager::cancelTimer):
(JSC::JSRunLoopTimer::Manager::PerVMData::setRunLoop): Deleted.
(JSC::JSRunLoopTimer::Manager::didChangeRunLoop): Deleted.
* runtime/JSRunLoopTimer.h:
(JSC::JSRunLoopTimer::Manager::PerVMData::PerVMData): Deleted.
* runtime/PromiseTimer.cpp:
(JSC::PromiseTimer::doWork):
(JSC::PromiseTimer::runRunLoop):
* runtime/VM.cpp:
(JSC::VM::VM):
(JSC::VM::create):
(JSC::VM::setRunLoop): Deleted.
* runtime/VM.h:
(JSC::VM::runLoop const):

Source/WebCore:

* bindings/js/CommonVM.cpp:
(WebCore::commonVMSlow):

Tools:

* TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj:
* TestWebKitAPI/Tests/_javascript_Core/JSRunLoopTimer.mm: Added.
(-[TestObject dealloc]):
(TestWebKitAPI::TEST):

Modified Paths

Added Paths

Diff

Modified: trunk/Source/_javascript_Core/ChangeLog (264314 => 264315)


--- trunk/Source/_javascript_Core/ChangeLog	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/_javascript_Core/ChangeLog	2020-07-13 20:43:08 UTC (rev 264315)
@@ -1,3 +1,37 @@
+2020-07-13  Geoffrey Garen  <gga...@apple.com>
+
+        Unreviewed, re-landing r264242 with crash fixed.
+
+        Re-landed changeset:
+
+        "JSRunLoopTimer should use WTF::RunLoop rather than custom CF
+        code"
+        https://bugs.webkit.org/show_bug.cgi?id=214102
+        https://trac.webkit.org/changeset/264242
+
+        * runtime/JSRunLoopTimer.cpp:
+        (JSC::epochTime):
+        (JSC::JSRunLoopTimer::Manager::PerVMData::PerVMData):
+        (JSC::JSRunLoopTimer::Manager::timerDidFireCallback):
+        (JSC::JSRunLoopTimer::Manager::PerVMData::~PerVMData):
+        (JSC::JSRunLoopTimer::Manager::timerDidFire):
+        (JSC::JSRunLoopTimer::Manager::registerVM):
+        (JSC::JSRunLoopTimer::Manager::scheduleTimer):
+        (JSC::JSRunLoopTimer::Manager::cancelTimer):
+        (JSC::JSRunLoopTimer::Manager::PerVMData::setRunLoop): Deleted.
+        (JSC::JSRunLoopTimer::Manager::didChangeRunLoop): Deleted.
+        * runtime/JSRunLoopTimer.h:
+        (JSC::JSRunLoopTimer::Manager::PerVMData::PerVMData): Deleted.
+        * runtime/PromiseTimer.cpp:
+        (JSC::PromiseTimer::doWork):
+        (JSC::PromiseTimer::runRunLoop):
+        * runtime/VM.cpp:
+        (JSC::VM::VM):
+        (JSC::VM::create):
+        (JSC::VM::setRunLoop): Deleted.
+        * runtime/VM.h:
+        (JSC::VM::runLoop const):
+
 2020-07-13  Keith Miller  <keith_mil...@apple.com>
 
         Clean up SourceProvider and add caller relative load script to jsc.cpp

Modified: trunk/Source/_javascript_Core/runtime/JSRunLoopTimer.cpp (264314 => 264315)


--- trunk/Source/_javascript_Core/runtime/JSRunLoopTimer.cpp	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/_javascript_Core/runtime/JSRunLoopTimer.cpp	2020-07-13 20:43:08 UTC (rev 264315)
@@ -40,47 +40,13 @@
 
 static inline JSRunLoopTimer::Manager::EpochTime epochTime(Seconds delay)
 {
-#if USE(CF)
-    return Seconds { CFAbsoluteTimeGetCurrent() + delay.value() };
-#else
     return MonotonicTime::now().secondsSinceEpoch() + delay;
-#endif
 }
 
-#if USE(CF)
-void JSRunLoopTimer::Manager::timerDidFireCallback(CFRunLoopTimerRef, void* contextPtr)
+JSRunLoopTimer::Manager::PerVMData::PerVMData(Manager& manager, RunLoop& runLoop)
+    : runLoop(runLoop)
+    , timer(makeUnique<RunLoop::Timer<Manager>>(runLoop, &manager, &JSRunLoopTimer::Manager::timerDidFireCallback))
 {
-    static_cast<JSRunLoopTimer::Manager*>(contextPtr)->timerDidFire();
-}
-
-void JSRunLoopTimer::Manager::PerVMData::setRunLoop(Manager* manager, CFRunLoopRef newRunLoop)
-{
-    if (runLoop) {
-        CFRunLoopRemoveTimer(runLoop.get(), timer.get(), kCFRunLoopCommonModes);
-        CFRunLoopTimerInvalidate(timer.get());
-        runLoop.clear();
-        timer.clear();
-    }
-
-    if (newRunLoop) {
-        runLoop = newRunLoop;
-        memset(&context, 0, sizeof(CFRunLoopTimerContext));
-        RELEASE_ASSERT(manager);
-        context.info = manager;
-        timer = adoptCF(CFRunLoopTimerCreate(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent() + s_decade.seconds(), CFAbsoluteTimeGetCurrent() + s_decade.seconds(), 0, 0, JSRunLoopTimer::Manager::timerDidFireCallback, &context));
-        CFRunLoopAddTimer(runLoop.get(), timer.get(), kCFRunLoopCommonModes);
-
-        EpochTime scheduleTime = epochTime(s_decade);
-        for (auto& pair : timers)
-            scheduleTime = std::min(pair.second, scheduleTime);
-        CFRunLoopTimerSetNextFireDate(timer.get(), scheduleTime.value());
-    }
-}
-#else
-JSRunLoopTimer::Manager::PerVMData::PerVMData(Manager& manager)
-    : runLoop(&RunLoop::current())
-    , timer(makeUnique<RunLoop::Timer<Manager>>(*runLoop, &manager, &JSRunLoopTimer::Manager::timerDidFireCallback))
-{
 #if USE(GLIB_EVENT_LOOP)
     timer->setPriority(RunLoopSourcePriority::_javascript_Timer);
     timer->setName("[_javascript_Core] JSRunLoopTimer");
@@ -91,13 +57,9 @@
 {
     timerDidFire();
 }
-#endif
 
 JSRunLoopTimer::Manager::PerVMData::~PerVMData()
 {
-#if USE(CF)
-    setRunLoop(nullptr, nullptr);
-#endif
 }
 
 void JSRunLoopTimer::Manager::timerDidFire()
@@ -106,21 +68,12 @@
 
     {
         auto locker = holdLock(m_lock);
-#if USE(CF)
-        CFRunLoopRef currentRunLoop = CFRunLoopGetCurrent();
-#else
         RunLoop* currentRunLoop = &RunLoop::current();
-#endif
         EpochTime nowEpochTime = epochTime(0_s);
         for (auto& entry : m_mapping) {
             PerVMData& data = ""
-#if USE(CF)
-            if (data.runLoop.get() != currentRunLoop)
+            if (data.runLoop.ptr() != currentRunLoop)
                 continue;
-#else
-            if (data.runLoop != currentRunLoop)
-                continue;
-#endif
             
             EpochTime scheduleTime = epochTime(s_decade);
             for (size_t i = 0; i < data.timers.size(); ++i) {
@@ -140,11 +93,7 @@
                 timersToFire.append(WTFMove(pair.first));
             }
 
-#if USE(CF)
-            CFRunLoopTimerSetNextFireDate(data.timer.get(), scheduleTime.value());
-#else
             data.timer->startOneShot(std::max(0_s, scheduleTime - MonotonicTime::now().secondsSinceEpoch()));
-#endif
         }
     }
 
@@ -164,10 +113,7 @@
 
 void JSRunLoopTimer::Manager::registerVM(VM& vm)
 {
-    auto data = ""
-#if USE(CF)
-    data->setRunLoop(this, vm.runLoop());
-#endif
+    auto data = "" vm.runLoop());
 
     auto locker = holdLock(m_lock);
     auto addResult = m_mapping.add({ vm.apiLock() }, WTFMove(data));
@@ -205,11 +151,7 @@
     if (!found)
         data.timers.append({ timer, fireEpochTime });
 
-#if USE(CF)
-    CFRunLoopTimerSetNextFireDate(data.timer.get(), scheduleTime.value());
-#else
     data.timer->startOneShot(std::max(0_s, scheduleTime - MonotonicTime::now().secondsSinceEpoch()));
-#endif
 }
 
 void JSRunLoopTimer::Manager::cancelTimer(JSRunLoopTimer& timer)
@@ -240,11 +182,7 @@
         scheduleTime = std::min(scheduleTime, data.timers[i].second);
     }
 
-#if USE(CF)
-    CFRunLoopTimerSetNextFireDate(data.timer.get(), scheduleTime.value());
-#else
     data.timer->startOneShot(std::max(0_s, scheduleTime - MonotonicTime::now().secondsSinceEpoch()));
-#endif
 }
 
 Optional<Seconds> JSRunLoopTimer::Manager::timeUntilFire(JSRunLoopTimer& timer)
@@ -264,18 +202,6 @@
     return WTF::nullopt;
 }
 
-#if USE(CF)
-void JSRunLoopTimer::Manager::didChangeRunLoop(VM& vm, CFRunLoopRef newRunLoop)
-{
-    auto locker = holdLock(m_lock);
-    auto iter = m_mapping.find({ vm.apiLock() });
-    RELEASE_ASSERT(iter != m_mapping.end());
-
-    PerVMData& data = ""
-    data.setRunLoop(this, newRunLoop);
-}
-#endif
-
 void JSRunLoopTimer::timerDidFire()
 {
     NO_TAIL_CALLS();

Modified: trunk/Source/_javascript_Core/runtime/JSRunLoopTimer.h (264314 => 264315)


--- trunk/Source/_javascript_Core/runtime/JSRunLoopTimer.h	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/_javascript_Core/runtime/JSRunLoopTimer.h	2020-07-13 20:43:08 UTC (rev 264315)
@@ -33,10 +33,6 @@
 #include <wtf/SharedTask.h>
 #include <wtf/ThreadSafeRefCounted.h>
 
-#if USE(CF)
-#include <CoreFoundation/CoreFoundation.h>
-#endif
-
 namespace JSC {
 
 class JSLock;
@@ -50,11 +46,8 @@
     class Manager {
         WTF_MAKE_FAST_ALLOCATED;
         WTF_MAKE_NONCOPYABLE(Manager);
-#if USE(CF)
-        static void timerDidFireCallback(CFRunLoopTimerRef, void*);
-#else
         void timerDidFireCallback();
-#endif
+
         Manager() = default;
 
         void timerDidFire();
@@ -70,10 +63,6 @@
 
         Optional<Seconds> timeUntilFire(JSRunLoopTimer&);
 
-#if USE(CF)
-        void didChangeRunLoop(VM&, CFRunLoopRef newRunLoop);
-#endif
-
     private:
         Lock m_lock;
 
@@ -81,22 +70,11 @@
             WTF_MAKE_FAST_ALLOCATED;
             WTF_MAKE_NONCOPYABLE(PerVMData);
         public:
-#if USE(CF)
-            PerVMData(Manager&) { }
-#else
-            PerVMData(Manager&);
-#endif
+            PerVMData(Manager&, WTF::RunLoop&);
             ~PerVMData();
 
-#if USE(CF)
-            void setRunLoop(Manager*, CFRunLoopRef);
-            RetainPtr<CFRunLoopTimerRef> timer;
-            RetainPtr<CFRunLoopRef> runLoop;
-            CFRunLoopTimerContext context;
-#else
-            RunLoop* runLoop;
+            Ref<WTF::RunLoop> runLoop;
             std::unique_ptr<RunLoop::Timer<Manager>> timer;
-#endif
             Vector<std::pair<Ref<JSRunLoopTimer>, EpochTime>> timers;
         };
 

Modified: trunk/Source/_javascript_Core/runtime/PromiseTimer.cpp (264314 => 264315)


--- trunk/Source/_javascript_Core/runtime/PromiseTimer.cpp	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/_javascript_Core/runtime/PromiseTimer.cpp	2020-07-13 20:43:08 UTC (rev 264315)
@@ -70,13 +70,8 @@
         }
     }
 
-    if (m_pendingPromises.isEmpty() && m_shouldStopRunLoopWhenAllPromisesFinish) {
-#if USE(CF)
-        CFRunLoopStop(vm.runLoop());
-#else
+    if (m_pendingPromises.isEmpty() && m_shouldStopRunLoopWhenAllPromisesFinish)
         RunLoop::current().stop();
-#endif
-    }
 
     m_taskLock.unlock();
 }
@@ -84,17 +79,10 @@
 void PromiseTimer::runRunLoop()
 {
     ASSERT(!m_apiLock->vm()->currentThreadIsHoldingAPILock());
-#if USE(CF)
-    ASSERT(CFRunLoopGetCurrent() == m_apiLock->vm()->runLoop());
-#endif
+    ASSERT(&RunLoop::current() == &m_apiLock->vm()->runLoop());
     m_shouldStopRunLoopWhenAllPromisesFinish = true;
-    if (m_pendingPromises.size()) {
-#if USE(CF)
-        CFRunLoopRun();
-#else
+    if (m_pendingPromises.size())
         RunLoop::run();
-#endif
-    }
 }
 
 void PromiseTimer::addPendingPromise(VM& vm, JSPromise* ticket, Vector<Strong<JSCell>>&& dependencies)

Modified: trunk/Source/_javascript_Core/runtime/VM.cpp (264314 => 264315)


--- trunk/Source/_javascript_Core/runtime/VM.cpp	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/_javascript_Core/runtime/VM.cpp	2020-07-13 20:43:08 UTC (rev 264315)
@@ -262,12 +262,10 @@
 
 static bool vmCreationShouldCrash = false;
 
-VM::VM(VMType vmType, HeapType heapType)
+VM::VM(VMType vmType, HeapType heapType, WTF::RunLoop* runLoop)
     : m_id(nextID())
     , m_apiLock(adoptRef(new JSLock(this)))
-#if USE(CF)
-    , m_runLoop(CFRunLoopGetCurrent())
-#endif // USE(CF)
+    , m_runLoop(runLoop ? *runLoop : WTF::RunLoop::current())
     , m_random(Options::seedOfVMRandomForFuzzer() ? Options::seedOfVMRandomForFuzzer() : cryptographicallyRandomNumber())
     , m_integrityRandom(*this)
     , heap(*this, heapType)
@@ -671,9 +669,9 @@
     return adoptRef(*new VM(APIContextGroup, heapType));
 }
 
-Ref<VM> VM::create(HeapType heapType)
+Ref<VM> VM::create(HeapType heapType, WTF::RunLoop* runLoop)
 {
-    return adoptRef(*new VM(Default, heapType));
+    return adoptRef(*new VM(Default, heapType, runLoop));
 }
 
 bool VM::sharedInstanceExists()
@@ -1355,15 +1353,6 @@
 }
 #endif
 
-#if USE(CF)
-void VM::setRunLoop(CFRunLoopRef runLoop)
-{
-    ASSERT(runLoop);
-    m_runLoop = runLoop;
-    JSRunLoopTimer::Manager::shared().didChangeRunLoop(*this, runLoop);
-}
-#endif // USE(CF)
-
 ScratchBuffer* VM::scratchBufferForSize(size_t size)
 {
     if (!size)

Modified: trunk/Source/_javascript_Core/runtime/VM.h (264314 => 264315)


--- trunk/Source/_javascript_Core/runtime/VM.h	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/_javascript_Core/runtime/VM.h	2020-07-13 20:43:08 UTC (rev 264315)
@@ -94,6 +94,7 @@
 #endif
 
 namespace WTF {
+class RunLoop;
 class SimpleStats;
 } // namespace WTF
 using WTF::SimpleStats;
@@ -312,7 +313,7 @@
     JS_EXPORT_PRIVATE static bool sharedInstanceExists();
     JS_EXPORT_PRIVATE static VM& sharedInstance();
 
-    JS_EXPORT_PRIVATE static Ref<VM> create(HeapType = SmallHeap);
+    JS_EXPORT_PRIVATE static Ref<VM> create(HeapType = SmallHeap, WTF::RunLoop* = nullptr);
     static Ref<VM> createContextGroup(HeapType = SmallHeap);
     JS_EXPORT_PRIVATE ~VM();
 
@@ -353,10 +354,7 @@
 
     unsigned m_id;
     RefPtr<JSLock> m_apiLock;
-#if USE(CF)
-    // These need to be initialized before heap below.
-    RetainPtr<CFRunLoopRef> m_runLoop;
-#endif
+    Ref<WTF::RunLoop> m_runLoop;
 
     WeakRandom m_random;
     Integrity::Random m_integrityRandom;
@@ -1079,10 +1077,7 @@
     bool needExceptionCheck() const { return m_needExceptionCheck; }
 #endif
 
-#if USE(CF)
-    CFRunLoopRef runLoop() const { return m_runLoop.get(); }
-    JS_EXPORT_PRIVATE void setRunLoop(CFRunLoopRef);
-#endif // USE(CF)
+    WTF::RunLoop& runLoop() const { return m_runLoop; }
 
     static void setCrashOnVMCreation(bool);
 
@@ -1106,7 +1101,7 @@
 private:
     friend class LLIntOffsetsExtractor;
 
-    VM(VMType, HeapType);
+    VM(VMType, HeapType, WTF::RunLoop* = nullptr);
     static VM*& sharedInstanceInternal();
     void createNativeThunk();
 

Modified: trunk/Source/WebCore/ChangeLog (264314 => 264315)


--- trunk/Source/WebCore/ChangeLog	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/WebCore/ChangeLog	2020-07-13 20:43:08 UTC (rev 264315)
@@ -1,3 +1,17 @@
+2020-07-13  Geoffrey Garen  <gga...@apple.com>
+
+        Unreviewed, re-landing r264242 with crash fixed.
+
+        Re-landed changeset:
+
+        "JSRunLoopTimer should use WTF::RunLoop rather than custom CF
+        code"
+        https://bugs.webkit.org/show_bug.cgi?id=214102
+        https://trac.webkit.org/changeset/264242
+
+        * bindings/js/CommonVM.cpp:
+        (WebCore::commonVMSlow):
+
 2020-07-13  Eric Carlson  <eric.carl...@apple.com>
 
         Impossible to pause playback of MediaStream video track

Modified: trunk/Source/WebCore/bindings/js/CommonVM.cpp (264314 => 264315)


--- trunk/Source/WebCore/bindings/js/CommonVM.cpp	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Source/WebCore/bindings/js/CommonVM.cpp	2020-07-13 20:43:08 UTC (rev 264315)
@@ -55,8 +55,14 @@
     // Also, initializeMainThread() does nothing on iOS.
     ScriptController::initializeMainThread();
 
-    auto& vm = JSC::VM::create(JSC::LargeHeap).leakRef();
+    RunLoop* runLoop = nullptr;
+#if PLATFORM(IOS_FAMILY)
+    if (RunLoop* web = RunLoop::webIfExists())
+        runLoop = web;
+#endif
 
+    auto& vm = JSC::VM::create(JSC::LargeHeap, runLoop).leakRef();
+
     g_commonVMOrNull = &vm;
 
     vm.heap.acquireAccess(); // At any time, we may do things that affect the GC.
@@ -64,7 +70,6 @@
 #if PLATFORM(IOS_FAMILY)
     if (WebThreadIsEnabled())
         vm.apiLock().makeWebThreadAware();
-    vm.setRunLoop(WebThreadRunLoop());
     vm.heap.machineThreads().addCurrentThread();
 #endif
 

Modified: trunk/Tools/ChangeLog (264314 => 264315)


--- trunk/Tools/ChangeLog	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Tools/ChangeLog	2020-07-13 20:43:08 UTC (rev 264315)
@@ -1,3 +1,19 @@
+2020-07-13  Geoffrey Garen  <gga...@apple.com>
+
+        Unreviewed, re-landing r264242 with crash fixed.
+
+        Re-landed changeset:
+
+        "JSRunLoopTimer should use WTF::RunLoop rather than custom CF
+        code"
+        https://bugs.webkit.org/show_bug.cgi?id=214102
+        https://trac.webkit.org/changeset/264242
+
+        * TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj:
+        * TestWebKitAPI/Tests/_javascript_Core/JSRunLoopTimer.mm: Added.
+        (-[TestObject dealloc]):
+        (TestWebKitAPI::TEST):
+
 2020-07-13  Sam Weinig  <wei...@apple.com>
 
         Replace single argument makeSimpleColor uses with their implementation

Modified: trunk/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj (264314 => 264315)


--- trunk/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj	2020-07-13 20:11:53 UTC (rev 264314)
+++ trunk/Tools/TestWebKitAPI/TestWebKitAPI.xcodeproj/project.pbxproj	2020-07-13 20:43:08 UTC (rev 264315)
@@ -87,6 +87,7 @@
 		11B7FD28219F47110069B27F /* FirstMeaningfulPaintMilestone.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 11B7FD22219F46DD0069B27F /* FirstMeaningfulPaintMilestone.cpp */; };
 		11C2598D21FA6324004C9E23 /* async-script-load.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = 11C2598C21FA618D004C9E23 /* async-script-load.html */; };
 		143DDE9820C9018B007F76FA /* Security.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 574F55D0204D471C002948C6 /* Security.framework */; };
+		14CC42E624B8D8FA00E64F48 /* JSRunLoopTimer.mm in Sources */ = {isa = PBXBuildFile; fileRef = 14CC42E524B8D8FA00E64F48 /* JSRunLoopTimer.mm */; };
 		1A02C870125D4CFD00E3F4BD /* find.html in Copy Resources */ = {isa = PBXBuildFile; fileRef = 1A02C84B125D4A5E00E3F4BD /* find.html */; };
 		1A3524AE1D63A4FB0031729B /* Scope.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1A3524AC1D63A4FB0031729B /* Scope.cpp */; };
 		1A4F81CF1BDFFD53004E672E /* RemoteObjectRegistryPlugIn.mm in Sources */ = {isa = PBXBuildFile; fileRef = 1A4F81CD1BDFFD53004E672E /* RemoteObjectRegistryPlugIn.mm */; };
@@ -1689,6 +1690,7 @@
 		11C2598C21FA618D004C9E23 /* async-script-load.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = "async-script-load.html"; sourceTree = "<group>"; };
 		14464012167A8305000BD218 /* LayoutUnitTests.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = LayoutUnitTests.cpp; sourceTree = "<group>"; };
 		144D40EC221B46A7004B474F /* UUID.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = UUID.cpp; sourceTree = "<group>"; };
+		14CC42E524B8D8FA00E64F48 /* JSRunLoopTimer.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = JSRunLoopTimer.mm; sourceTree = "<group>"; };
 		14F3B11215E45EAB00210069 /* SaturatedArithmeticOperations.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = SaturatedArithmeticOperations.cpp; sourceTree = "<group>"; };
 		1A02C84B125D4A5E00E3F4BD /* find.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = find.html; sourceTree = "<group>"; };
 		1A02C84E125D4A8400E3F4BD /* Find.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Find.cpp; sourceTree = "<group>"; };
@@ -3052,6 +3054,14 @@
 			name = cocoa;
 			sourceTree = "<group>";
 		};
+		14CC42E024B8D7E700E64F48 /* _javascript_Core */ = {
+			isa = PBXGroup;
+			children = (
+				14CC42E524B8D8FA00E64F48 /* JSRunLoopTimer.mm */,
+			);
+			path = _javascript_Core;
+			sourceTree = "<group>";
+		};
 		1AB674ADFE9D54B511CA2CBB /* Products */ = {
 			isa = PBXGroup;
 			children = (
@@ -4264,6 +4274,7 @@
 			isa = PBXGroup;
 			children = (
 				7560917619259C59009EF06E /* ios */,
+				14CC42E024B8D7E700E64F48 /* _javascript_Core */,
 				C07E6CAD13FD67650038B22B /* mac */,
 				C08587F913FEC39B001EF4E5 /* TestWebKitAPI */,
 				440A1D3614A01000008A66F2 /* WebCore */,
@@ -5084,6 +5095,7 @@
 				51820A4D22F4EE7F00DF0A01 /* _javascript_URLNavigation.mm in Sources */,
 				5C0160C121A132460077FA32 /* JITEnabled.mm in Sources */,
 				E35FC7B222B82A7300F32F98 /* JSLockTakesWebThreadLock.mm in Sources */,
+				14CC42E624B8D8FA00E64F48 /* JSRunLoopTimer.mm in Sources */,
 				7CCE7EC41A411A7E00447C4C /* JSWrapperForNodeInWebFrame.mm in Sources */,
 				F45E15732112CE2900307E82 /* KeyboardInputTestsIOS.mm in Sources */,
 				278E3E1923CD842F005A6B80 /* KeyedCoding.cpp in Sources */,

Added: trunk/Tools/TestWebKitAPI/Tests/_javascript_Core/JSRunLoopTimer.mm (0 => 264315)


--- trunk/Tools/TestWebKitAPI/Tests/_javascript_Core/JSRunLoopTimer.mm	                        (rev 0)
+++ trunk/Tools/TestWebKitAPI/Tests/_javascript_Core/JSRunLoopTimer.mm	2020-07-13 20:43:08 UTC (rev 264315)
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2014 Apple 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "config.h"
+
+#import "WTFStringUtilities.h"
+#import <_javascript_Core/_javascript_Core.h>
+#import <wtf/RetainPtr.h>
+#import <wtf/RunLoop.h>
+#import <wtf/URL.h>
+#import <wtf/Vector.h>
+#import <wtf/cocoa/NSURLExtras.h>
+#import <wtf/cocoa/VectorCocoa.h>
+#import <wtf/text/WTFString.h>
+
+// _javascript_Core's behavior at the time of writing is that destructors
+// run asynchronously on the thread that allocated the VM, unless they run
+// synchronously during an API call on some other thread.
+
+static bool s_isRunningRunLoop;
+static bool s_done;
+static WTF::RunLoop* s_expectedRunLoop;
+
+@interface TestObject : NSObject
+- (void)dealloc;
+@end
+
+@implementation TestObject
+- (void)dealloc
+{
+    if (s_isRunningRunLoop) {
+        EXPECT_EQ(&RunLoop::current(), s_expectedRunLoop);
+        s_done = true;
+    }
+
+    [super dealloc];
+}
+@end
+
+namespace TestWebKitAPI {
+
+static void triggerGC(JSContext *context)
+{
+    @autoreleasepool {
+        for (size_t i = 0; i < 1000; ++i)
+            [JSValue valueWithObject:[[TestObject new] autorelease] inContext:context];
+        JSGarbageCollect([context JSGlobalContextRef]);
+    }
+}
+
+static void cycleRunLoop()
+{
+    @autoreleasepool {
+        s_isRunningRunLoop = true;
+        RunLoop::current().cycle();
+        s_isRunningRunLoop = false;
+    }
+}
+
+TEST(_javascript_Core, IncrementalSweeperMainThread)
+{
+    auto context = adoptNS([JSContext new]);
+    s_expectedRunLoop = &RunLoop::current();
+
+    while (!s_done) {
+        triggerGC(context.get());
+        cycleRunLoop();
+    }
+}
+
+TEST(_javascript_Core, IncrementalSweeperSecondaryThread)
+{
+    auto context = adoptNS([JSContext new]);
+    s_expectedRunLoop = &RunLoop::current();
+
+    while (!s_done) {
+        dispatch_sync(dispatch_get_global_queue(QOS_CLASS_USER_INTERACTIVE, 0), ^{
+            triggerGC(context.get());
+            cycleRunLoop();
+        });
+
+        cycleRunLoop();
+    }
+}
+
+} // namespace TestWebKitAPI
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