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-rw-r--r--src/OSSupport/NetworkSingleton.cpp21
-rw-r--r--src/OSSupport/NetworkSingleton.h8
2 files changed, 27 insertions, 2 deletions
diff --git a/src/OSSupport/NetworkSingleton.cpp b/src/OSSupport/NetworkSingleton.cpp
index c16f92c5a..d0abafcbd 100644
--- a/src/OSSupport/NetworkSingleton.cpp
+++ b/src/OSSupport/NetworkSingleton.cpp
@@ -6,7 +6,6 @@
#include "Globals.h"
#include "NetworkSingleton.h"
-#include <event2/event.h>
#include <event2/thread.h>
#include <event2/bufferevent.h>
#include <event2/dns.h>
@@ -91,8 +90,11 @@ void cNetworkSingleton::Initialise(void)
}
// Create the event loop thread:
- m_EventLoopThread = std::thread(RunEventLoop, this);
m_HasTerminated = false;
+ m_StartupEvent.reset(new cEvent);
+ m_EventLoopThread = std::thread(RunEventLoop, this);
+ m_StartupEvent->Wait(); // Wait for the LibEvent loop to actually start running (otherwise calling Terminate too soon would hang, see #3228)
+ m_StartupEvent.reset(); // Don't need the cEvent any more, release all its resources
}
@@ -153,6 +155,9 @@ void cNetworkSingleton::LogCallback(int a_Severity, const char * a_Msg)
void cNetworkSingleton::RunEventLoop(cNetworkSingleton * a_Self)
{
+ auto timer = evtimer_new(a_Self->m_EventBase, SignalizeStartup, a_Self);
+ timeval timeout{}; // Zero timeout - execute immediately
+ evtimer_add(timer, &timeout);
event_base_loop(a_Self->m_EventBase, EVLOOP_NO_EXIT_ON_EMPTY);
}
@@ -160,6 +165,18 @@ void cNetworkSingleton::RunEventLoop(cNetworkSingleton * a_Self)
+void cNetworkSingleton::SignalizeStartup(evutil_socket_t a_Socket, short a_Events, void * a_Self)
+{
+ auto self = reinterpret_cast<cNetworkSingleton *>(a_Self);
+ ASSERT(self != nullptr);
+ ASSERT(self->m_StartupEvent != nullptr);
+ self->m_StartupEvent->Set();
+}
+
+
+
+
+
void cNetworkSingleton::AddHostnameLookup(cHostnameLookupPtr a_HostnameLookup)
{
ASSERT(!m_HasTerminated);
diff --git a/src/OSSupport/NetworkSingleton.h b/src/OSSupport/NetworkSingleton.h
index c72df38ec..75713d261 100644
--- a/src/OSSupport/NetworkSingleton.h
+++ b/src/OSSupport/NetworkSingleton.h
@@ -13,6 +13,7 @@
#pragma once
+#include <event2/event.h>
#include "Network.h"
#include "CriticalSection.h"
#include "Event.h"
@@ -127,11 +128,18 @@ protected:
/** The thread in which the main LibEvent loop runs. */
std::thread m_EventLoopThread;
+ /** Event that is signalled once the startup is finished and the LibEvent loop is running. */
+ UniquePtr<cEvent> m_StartupEvent;
+
+
/** Converts LibEvent-generated log events into log messages in MCS log. */
static void LogCallback(int a_Severity, const char * a_Msg);
/** Implements the thread that runs LibEvent's event dispatcher loop. */
static void RunEventLoop(cNetworkSingleton * a_Self);
+
+ /** Callback called by LibEvent when the event loop is started. */
+ static void SignalizeStartup(evutil_socket_t a_Socket, short a_Events, void * a_Self);
};