more fixes/tweaks about cancelled lindas

* bumped version to 3.8.5
* linda:limit() returns lanes.cancel_error on a limited linda
* lanes.genlock() and lanes.genatomic() support cancelled lindas by
returning lanes.cancel_error whenever appropriate
* fixed a possible Lua stack overflow when calling linda:dump()
* fixed cases where linda:send() and linda:receive() would not return
lanes.cancel_error when they should

1 files changed, 2 insertions, 0 deletions

diff --git a/src/keeper.c b/src/keeper.c
index 1a696aa..c22bfed 100644
--- a/src/keeper.c
+++ b/src/keeper.c
@@ -190,6 +190,7 @@ int keeper_push_linda_storage( lua_State* L, void* ptr)
         struct s_Keeper* K = keeper_acquire( ptr);
         lua_State* KL = K ? K->L : NULL;
         if( KL == NULL) return 0;
+        STACK_GROW( KL, 4);
         STACK_CHECK( KL);
         lua_pushlightuserdata( KL, fifos_key);                      // fifos_key
         lua_rawget( KL, LUA_REGISTRYINDEX);                         // fifos
@@ -204,6 +205,7 @@ int keeper_push_linda_storage( lua_State* L, void* ptr)
         }
         // move data from keeper to destination state                  KEEPER                       MAIN
         lua_pushnil( KL);                                           // storage nil
+        STACK_GROW( L, 5);
         STACK_CHECK( L);
         lua_newtable( L);                                                                        // out
         while( lua_next( KL, -2))                                   // storage key fifo