Add MPI_Compare_and_swap (normally atomic) call

[simgrid.git] / src / smpi / smpi_win.hpp

diff --git a/src/smpi/smpi_win.hpp b/src/smpi/smpi_win.hpp
index 1d36f36..a0f9aa7 100644 (file)
--- a/src/smpi/smpi_win.hpp
+++ b/src/smpi/smpi_win.hpp
@@ -31,6 +31,7 @@ class Win : public F2C, public Keyval {
   MPI_Group group_;
   int count_; //for ordering the accs
   xbt_mutex_t lock_mut_;
+  xbt_mutex_t atomic_mut_;
   std::list<int> lockers_;
   int rank_; // to identify owner for barriers in MPI_COMM_WORLD
   int mode_; // exclusive or shared lock
@@ -70,6 +71,9 @@ public:
   int get_accumulate( void *origin_addr, int origin_count, MPI_Datatype origin_datatype, void *result_addr, 
               int result_count, MPI_Datatype result_datatype, int target_rank, MPI_Aint target_disp, int target_count, 
               MPI_Datatype target_datatype, MPI_Op op);
+  int compare_and_swap(void *origin_addr, void *compare_addr,
+        void *result_addr, MPI_Datatype datatype, int target_rank,
+        MPI_Aint target_disp);
   static Win* f2c(int id);
   int lock(int lock_type, int rank, int assert);
   int unlock(int rank);