1 files changed, 50 insertions, 3 deletions

diff --git a/src/OSSupport/Event.cpp b/src/OSSupport/Event.cpp
index 74f823216..87bc110ce 100644
--- a/src/OSSupport/Event.cpp
+++ b/src/OSSupport/Event.cpp
@@ -15,8 +15,8 @@
 cEvent::cEvent(void)
 {
 #ifdef _WIN32
-	m_Event = CreateEvent(NULL, FALSE, FALSE, NULL);
-	if (m_Event == NULL)
+	m_Event = CreateEvent(nullptr, FALSE, FALSE, nullptr);
+	if (m_Event == nullptr)
 	{
 		LOGERROR("cEvent: cannot create event, GLE = %u. Aborting server.", (unsigned)GetLastError());
 		abort();
@@ -71,7 +71,7 @@ cEvent::~cEvent()
 	{
 		sem_destroy(m_Event);
 		delete m_Event;
-		m_Event = NULL;
+		m_Event = nullptr;
 	}
 #endif
 }
@@ -102,6 +102,53 @@ void cEvent::Wait(void)
 
 
 
+bool cEvent::Wait(int a_TimeoutMSec)
+{
+	#ifdef _WIN32
+		DWORD res = WaitForSingleObject(m_Event, (DWORD)a_TimeoutMSec);
+		switch (res)
+		{
+			case WAIT_OBJECT_0: return true;   // Regular event signalled
+			case WAIT_TIMEOUT:  return false;  // Regular event timeout
+			default:
+			{
+				LOGWARN("cEvent: waiting for the event failed: %u, GLE = %u. Continuing, but server may be unstable.", (unsigned)res, (unsigned)GetLastError());
+				return false;
+			}
+		}
+	#else
+		// Get the current time:
+		timespec timeout;
+		if (clock_gettime(CLOCK_REALTIME, &timeout) == -1)
+		{
+			LOGWARN("cEvent: Getting current time failed: %i, err = %s. Continuing, but the server may be unstable.", errno, GetOSErrorString(errno).c_str());
+			return false;
+		}
+
+		// Add the specified timeout:
+		timeout.tv_sec += a_TimeoutMSec / 1000;
+		timeout.tv_nsec += (a_TimeoutMSec % 1000) * 1000000;  // 1 msec = 1000000 usec
+
+		// Wait with timeout:
+		int res = sem_timedwait(m_Event, &timeout);
+		switch (res)
+		{
+			case 0:         return true;   // Regular event signalled
+			case ETIMEDOUT: return false;  // Regular even timeout
+			default:
+			{
+				AString error = GetOSErrorString(errno);
+				LOGWARN("cEvent: waiting for the event failed: %i, err = %s. Continuing, but server may be unstable.", res, error.c_str());
+				return false;
+			}
+		}
+	#endif
+}
+
+
+
+
+
 void cEvent::Set(void)
 {
 	#ifdef _WIN32