cam: event_loop: Rename event_ to base_

The 'event' variable name is usually used for events added to the base
event loop, not the loop itself. Rename the struct event_base member to
base_ as a preparation for future work adding events to the loop.

There is no functional change.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/cam/event_loop.cpp

@@ -18,7 +18,7 @@ EventLoop::EventLoop()
 	assert(!instance_);
 
 	evthread_use_pthreads();
-	event_ = event_base_new();
+	base_ = event_base_new();
 	instance_ = this;
 }
 
@@ -26,7 +26,7 @@ EventLoop::~EventLoop()
 {
 	instance_ = nullptr;
 
-	event_base_free(event_);
+	event_base_free(base_);
 	libevent_global_shutdown();
 }
 
@@ -42,7 +42,7 @@ int EventLoop::exec()
 
 	while (!exit_.load(std::memory_order_acquire)) {
 		dispatchCalls();
-		event_base_loop(event_, EVLOOP_NO_EXIT_ON_EMPTY);
+		event_base_loop(base_, EVLOOP_NO_EXIT_ON_EMPTY);
 	}
 
 	return exitCode_;
@@ -57,7 +57,7 @@ void EventLoop::exit(int code)
 
 void EventLoop::interrupt()
 {
-	event_base_loopbreak(event_);
+	event_base_loopbreak(base_);
 }
 
 void EventLoop::callLater(const std::function<void()> &func)

src/cam/event_loop.h

@@ -30,7 +30,7 @@ public:
 private:
 	static EventLoop *instance_;
 
-	struct event_base *event_;
+	struct event_base *base_;
 	std::atomic<bool> exit_;
 	int exitCode_;