Add global window list.

Add a list of created windows on this process,
so that we can make progress on all windows in
the progress engine.
Signed-off-by: Pavan Balaji <balaji@anl.gov>

src/mpid/ch3/include/mpid_rma_types.h

@@ -124,6 +124,13 @@ typedef struct MPIDI_RMA_Slot {
     struct MPIDI_RMA_Target *target_list_tail;
 } MPIDI_RMA_Slot_t;
 
+typedef struct MPIDI_RMA_Win_list {
+    MPID_Win *win_ptr;
+    struct MPIDI_RMA_Win_list *next;
+} MPIDI_RMA_Win_list_t;
+
+extern MPIDI_RMA_Win_list_t *MPIDI_RMA_Win_list, *MPIDI_RMA_Win_list_tail;
+
 typedef struct MPIDI_PT_single_op {
     MPIDI_CH3_Pkt_type_t type;  /* put, get, or accum. */
     void *addr;

src/mpid/ch3/src/mpid_rma.c

@@ -29,6 +29,8 @@ cvars:
 
 MPIU_THREADSAFE_INIT_DECL(initRMAoptions);
 
+MPIDI_RMA_Win_list_t *MPIDI_RMA_Win_list = NULL, *MPIDI_RMA_Win_list_tail = NULL;
+
 static int win_init(MPI_Aint size, int disp_unit, int create_flavor, int model,
                     MPID_Comm * comm_ptr, MPID_Win ** win_ptr);
 
@@ -277,7 +279,8 @@ static int win_init(MPI_Aint size, int disp_unit, int create_flavor, int model,
     int i;
     MPID_Comm *win_comm_ptr;
     int win_target_pool_size;
-    MPIU_CHKPMEM_DECL(4);
+    MPIDI_RMA_Win_list_t *win_elem;
+    MPIU_CHKPMEM_DECL(5);
     MPIDI_STATE_DECL(MPID_STATE_WIN_INIT);
 
     MPIDI_FUNC_ENTER(MPID_STATE_WIN_INIT);
@@ -378,6 +381,12 @@ static int win_init(MPI_Aint size, int disp_unit, int create_flavor, int model,
 
     MPID_WIN_FTABLE_SET_DEFAULTS(win_ptr);
 
+    /* enqueue window into the global list */
+    MPIU_CHKPMEM_MALLOC(win_elem, MPIDI_RMA_Win_list_t *, sizeof(MPIDI_RMA_Win_list_t), mpi_errno,
+                        "Window list element");
+    win_elem->win_ptr = *win_ptr;
+    MPL_LL_APPEND(MPIDI_RMA_Win_list, MPIDI_RMA_Win_list_tail, win_elem);
+
   fn_exit:
     MPIDI_FUNC_EXIT(MPID_STATE_WIN_INIT);
     return mpi_errno;

src/mpid/ch3/src/mpidi_rma.c

@@ -133,6 +133,7 @@ int MPIDI_Win_free(MPID_Win ** win_ptr)
     int in_use;
     MPID_Comm *comm_ptr;
     int errflag = FALSE;
+    MPIDI_RMA_Win_list_t *win_elem;
     MPIDI_STATE_DECL(MPID_STATE_MPIDI_WIN_FREE);
 
     MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_WIN_FREE);
@@ -148,6 +149,13 @@ int MPIDI_Win_free(MPID_Win ** win_ptr)
             MPIU_ERR_POP(mpi_errno);
     }
 
+    /* dequeue window from the global list */
+    for (win_elem = MPIDI_RMA_Win_list; win_elem && win_elem->win_ptr != *win_ptr;
+         win_elem = win_elem->next);
+    MPIU_ERR_CHKANDJUMP(win_elem == NULL, mpi_errno, MPI_ERR_RMA_SYNC, "**rmasync");
+    MPL_LL_DELETE(MPIDI_RMA_Win_list, MPIDI_RMA_Win_list_tail, win_elem);
+    MPIU_Free(win_elem);
+
     comm_ptr = (*win_ptr)->comm_ptr;
     mpi_errno = MPIR_Comm_free_impl(comm_ptr);
     if (mpi_errno)