core: use Mutex/Blockade

Issue #3612

repos/base-fiasco/src/core/irq_session_component.cc

@@ -82,7 +82,7 @@ void Irq_object::_wait_for_irq()
 void Irq_object::start()
 {
 	::Thread::start();
-	_sync_bootup.lock();
+	_sync_bootup.block();
 }
 
 
@@ -94,10 +94,10 @@ void Irq_object::entry()
 	}
 
 	/* thread is up and ready */
-	_sync_bootup.unlock();
+	_sync_bootup.wakeup();
 
 	/* wait for first ack_irq */
-	_sync_ack.lock();
+	_sync_ack.block();
 
 	while (true) {
 
@@ -108,7 +108,7 @@ void Irq_object::entry()
 
 		Genode::Signal_transmitter(_sig_cap).submit(1);
 
-		_sync_ack.lock();
+		_sync_ack.block();
 	}
 }
 
@@ -116,7 +116,6 @@ void Irq_object::entry()
 Irq_object::Irq_object(unsigned irq)
 :
 	Thread_deprecated<4096>("irq"),
-	_sync_ack(Lock::LOCKED), _sync_bootup(Lock::LOCKED),
 	_irq(irq)
 { }