thread-pool: fix waiting until all tasks are complete.

Change-Id: Iaf5a3bf28879f229a223a8760fd878f96958a53c

1 files changed, 7 insertions, 3 deletions

diff --git a/include/comphelper/threadpool.hxx b/include/comphelper/threadpool.hxx
index 2e5171902f55..231a735d9107 100644
--- a/include/comphelper/threadpool.hxx
+++ b/include/comphelper/threadpool.hxx
@@ -54,10 +54,14 @@ private:
 
     ThreadTask *waitForWork( osl::Condition &rNewWork );
     ThreadTask *popWork();
+    void        startWork();
+    void        stopWork();
 
-    osl::Mutex maGuard;
-    osl::Condition maTasksEmpty;
-    bool mbTerminate;
+    osl::Mutex     maGuard;
+    sal_Int32      mnThreadsWorking;
+    /// signalled when all in-progress tasks are complete
+    osl::Condition maTasksComplete;
+    bool           mbTerminate;
     std::vector< rtl::Reference< ThreadWorker > > maWorkers;
     std::vector< ThreadTask * >   maTasks;
 };