Owen Rudge : wsdapi: Add critical section around notification sinks.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e4c79c13b2313db95fc00f2350fd1da49cf5d8db
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=e4c79c13b2313db95fc00f2350fd1da49cf5d8db

Author: Owen Rudge <orudge at codeweavers.com>
Date:   Wed Jun 13 19:11:20 2018 +0100

wsdapi: Add critical section around notification sinks.

Signed-off-by: Owen Rudge <orudge at codeweavers.com>
Signed-off-by: Huw Davies <huw at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/wsdapi/discovery.c       | 9 +++++++++
 dlls/wsdapi/wsdapi_internal.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/dlls/wsdapi/discovery.c b/dlls/wsdapi/discovery.c
index 9971219..7456f90 100644
--- a/dlls/wsdapi/discovery.c
+++ b/dlls/wsdapi/discovery.c
@@ -97,6 +97,7 @@ static ULONG WINAPI IWSDiscoveryPublisherImpl_Release(IWSDiscoveryPublisher *ifa
             HeapFree(GetProcessHeap(), 0, sink);
         }
 
+        DeleteCriticalSection(&This->notification_sink_critical_section);
         HeapFree(GetProcessHeap(), 0, This);
     }
 
@@ -148,7 +149,9 @@ static HRESULT WINAPI IWSDiscoveryPublisherImpl_RegisterNotificationSink(IWSDisc
     sink->notificationSink = pSink;
     IWSDiscoveryPublisherNotify_AddRef(pSink);
 
+    EnterCriticalSection(&impl->notification_sink_critical_section);
     list_add_tail(&impl->notificationSinks, &sink->entry);
+    LeaveCriticalSection(&impl->notification_sink_critical_section);
 
     if ((!impl->publisherStarted) && (!init_networking(impl)))
         return E_FAIL;
@@ -168,6 +171,8 @@ static HRESULT WINAPI IWSDiscoveryPublisherImpl_UnRegisterNotificationSink(IWSDi
         return E_INVALIDARG;
     }
 
+    EnterCriticalSection(&impl->notification_sink_critical_section);
+
     LIST_FOR_EACH_ENTRY(sink, &impl->notificationSinks, struct notificationSink, entry)
     {
         if (sink->notificationSink == pSink)
@@ -176,10 +181,13 @@ static HRESULT WINAPI IWSDiscoveryPublisherImpl_UnRegisterNotificationSink(IWSDi
             list_remove(&sink->entry);
             HeapFree(GetProcessHeap(), 0, sink);
 
+            LeaveCriticalSection(&impl->notification_sink_critical_section);
             return S_OK;
         }
     }
 
+    LeaveCriticalSection(&impl->notification_sink_critical_section);
+
     /* Notification sink is not registered */
     return E_FAIL;
 }
@@ -391,6 +399,7 @@ HRESULT WINAPI WSDCreateDiscoveryPublisher(IWSDXMLContext *pContext, IWSDiscover
         return ret;
     }
 
+    InitializeCriticalSection(&obj->notification_sink_critical_section);
     list_init(&obj->notificationSinks);
 
     *ppPublisher = &obj->IWSDiscoveryPublisher_iface;
diff --git a/dlls/wsdapi/wsdapi_internal.h b/dlls/wsdapi/wsdapi_internal.h
index f88822d..3e5e163 100644
--- a/dlls/wsdapi/wsdapi_internal.h
+++ b/dlls/wsdapi/wsdapi_internal.h
@@ -48,6 +48,7 @@ typedef struct IWSDiscoveryPublisherImpl {
     IWSDXMLContext        *xmlContext;
     DWORD                 addressFamily;
     struct list           notificationSinks;
+    CRITICAL_SECTION      notification_sink_critical_section;
     BOOL                  publisherStarted;
     HANDLE                thread_handles[MAX_WSD_THREADS];
     int                   num_thread_handles;