Initial Bun-specific run loop

Source/WTF/wtf/PlatformJSCOnly.cmake

@@ -128,6 +128,10 @@ if (LOWERCASE_EVENT_LOOP_TYPE STREQUAL "glib")
         ${GLIB_GOBJECT_LIBRARIES}
         ${GLIB_LIBRARIES}
     )
+elseif (LOWERCASE_EVENT_LOOP_TYPE STREQUAL "bun")
+    list(APPEND WTF_SOURCES
+        bun/RunLoopBun.cpp
+    )
 else ()
     list(APPEND WTF_SOURCES
         generic/RunLoopGeneric.cpp

Source/WTF/wtf/RunLoop.h

@@ -171,6 +171,7 @@ class WTF_CAPABILITY("is current") RunLoop final : public GuaranteedSerialFuncti
 
         class ScheduledTask;
         Ref<ScheduledTask> m_scheduledTask;
+#elif USE(BUN_EVENT_LOOP)
 #endif
     };
 

Source/WTF/wtf/bun/RunLoopBun.cpp

@@ -0,0 +1,39 @@
+#include "config.h"
+#include <wtf/RunLoop.h>
+
+namespace WTF {
+
+RunLoop::TimerBase::TimerBase(Ref<RunLoop>&& loop)
+    : m_runLoop(WTFMove(loop))
+{
+}
+
+RunLoop::TimerBase::~TimerBase()
+{
+}
+
+void RunLoop::TimerBase::stop() {}
+
+bool RunLoop::TimerBase::isActive() const {}
+
+Seconds RunLoop::TimerBase::secondsUntilFire() const {}
+
+void RunLoop::TimerBase::start(Seconds interval, bool repeat) {}
+
+// probably more Bun-specific TimerBase methods
+
+RunLoop::RunLoop()
+{
+}
+
+RunLoop::~RunLoop() {}
+
+void RunLoop::run() {}
+
+void RunLoop::stop() {}
+
+void RunLoop::wakeUp() {}
+
+RunLoop::CycleResult RunLoop::cycle(RunLoopMode mode) {}
+
+} // namespace WTF

Source/cmake/OptionsJSCOnly.cmake

@@ -58,6 +58,7 @@ WEBKIT_OPTION_END()
 set(ALL_EVENT_LOOP_TYPES
     GLib
     Generic
+    Bun
 )
 
 WEBKIT_OPTION_BEGIN()
@@ -72,6 +73,10 @@ set(DEFAULT_EVENT_LOOP_TYPE "Generic")
 
 set(EVENT_LOOP_TYPE ${DEFAULT_EVENT_LOOP_TYPE} CACHE STRING "Implementation of event loop to be used in JavaScriptCore (one of ${ALL_EVENT_LOOP_TYPES})")
 
+if (USE_BUN_JSC_ADDITIONS)
+    set(EVENT_LOOP_TYPE "Bun")
+endif ()
+
 set(ENABLE_WEBCORE OFF)
 set(ENABLE_WEBKIT_LEGACY OFF)
 set(ENABLE_WEBKIT OFF)
@@ -186,6 +191,9 @@ if (LOWERCASE_EVENT_LOOP_TYPE STREQUAL "glib")
     SET_AND_EXPOSE_TO_BUILD(USE_GLIB 1)
     SET_AND_EXPOSE_TO_BUILD(USE_GLIB_EVENT_LOOP 1)
     SET_AND_EXPOSE_TO_BUILD(WTF_DEFAULT_EVENT_LOOP 0)
+elseif (LOWERCASE_EVENT_LOOP_TYPE STREQUAL "bun")
+    SET_AND_EXPOSE_TO_BUILD(USE_BUN_EVENT_LOOP 1)
+    SET_AND_EXPOSE_TO_BUILD(WTF_DEFAULT_EVENT_LOOP 0)
 else ()
     SET_AND_EXPOSE_TO_BUILD(USE_GENERIC_EVENT_LOOP 1)
     SET_AND_EXPOSE_TO_BUILD(WTF_DEFAULT_EVENT_LOOP 0)