wangle::getEventBase()

Summary: this is going to be a really common pattern, so I'm providing a shortcut

Reviewed By: @fugalh

Differential Revision: D2146008

folly/wangle/concurrent/GlobalExecutor.cpp

@@ -110,6 +110,10 @@ std::shared_ptr<IOExecutor> getIOExecutor() {
       globalIOExecutorLock);
 }
 
+EventBase* getEventBase() {
+  return getIOExecutor()->getEventBase();
+}
+
 void setIOExecutor(std::shared_ptr<IOExecutor> executor) {
   setExecutor(
       std::move(executor),

folly/wangle/concurrent/GlobalExecutor.h

@@ -39,6 +39,9 @@ void setCPUExecutor(std::shared_ptr<Executor> executor);
 // one or more EventBases.
 std::shared_ptr<IOExecutor> getIOExecutor();
 
+// Retrieve an event base from the global IOExecutor
+EventBase* getEventBase();
+
 // Set an IOExecutor to be the global IOExecutor which will be returned by
 // subsequent calls to getIOExecutor(). Takes a non-owning (weak) reference.
 void setIOExecutor(std::shared_ptr<IOExecutor> executor);