Thread safety for QHostInfo symbian implementation

Each thread needs at least one current request if it has any queued
requests, this is to stop the queue stalling.
When starting a queued request, start it in the same thread it belongs to
When aborting a request from the wrong thread, just detach it (it will
complete normally but the slot isn't connected, and then delete itself)

Reviewed-by: Markus Goetz

1 files changed, 2 insertions, 0 deletions

diff --git a/src/network/kernel/qhostinfo_p.h b/src/network/kernel/qhostinfo_p.h
index bae6efa..8da0692 100644
--- a/src/network/kernel/qhostinfo_p.h
+++ b/src/network/kernel/qhostinfo_p.h
@@ -234,6 +234,7 @@ public:
     ~QSymbianHostResolver();
 
     void requestHostLookup();
+    void abortHostLookup();
     int id();
 
     void returnResults();
@@ -301,6 +302,7 @@ public:
 private:
     void runNextLookup();
 
+    // this is true for single threaded use, with multiple threads the max is ((number of threads) + KMaxConcurrentLookups - 1)
     static const int KMaxConcurrentLookups = 5;
 
     QList<QSymbianHostResolver*> iCurrentLookups;