1 files changed, 9 insertions, 1 deletions
diff --git a/winsup/cygwin/thread.h b/winsup/cygwin/thread.h
index 6065f9d9c..39f0f58a4 100644
--- a/winsup/cygwin/thread.h
+++ b/winsup/cygwin/thread.h
@@ -263,12 +263,15 @@ class pthread_mutex:public verifyable_object
 public:
   HANDLE win32_obj_id;
   LONG condwaits;
+  int pshared;
 
   int Lock ();
   int TryLock ();
   int UnLock ();
-
+ 
+    pthread_mutex (unsigned short);
     pthread_mutex (pthread_mutexattr *);
+    pthread_mutex (pthread_mutex_t *, pthread_mutexattr *);
    ~pthread_mutex ();
 };
 
@@ -345,6 +348,11 @@ public:
   callback *pthread_child;
   callback *pthread_parent;
 
+  /* this is an associative array for the _exclusive_ use of pshared mutex's
+   * normal mutex's don't go here to reduce overhead and prevent serialisation.
+   */
+  class pthread_mutex * pshared_mutexs[256];
+
   void Init (int);
 
     MTinterface ():reent_index (0), indexallocated (0), threadcount (1)