diff options
Diffstat (limited to 'erts/emulator/beam/erl_gc.h')
| -rw-r--r-- | erts/emulator/beam/erl_gc.h | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/erts/emulator/beam/erl_gc.h b/erts/emulator/beam/erl_gc.h index af55b6363f..807ef8ae8d 100644 --- a/erts/emulator/beam/erl_gc.h +++ b/erts/emulator/beam/erl_gc.h @@ -1,19 +1,19 @@ /* * %CopyrightBegin% - * - * Copyright Ericsson AB 2007-2009. All Rights Reserved. - * + * + * Copyright Ericsson AB 2007-2010. All Rights Reserved. + * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in * compliance with the License. You should have received a copy of the * Erlang Public License along with this software. If not, it can be * retrieved online at http://www.erlang.org/. - * + * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See * the License for the specific language governing rights and limitations * under the License. - * + * * %CopyrightEnd% */ @@ -22,11 +22,12 @@ /* GC declarations shared by beam/erl_gc.c and hipe/hipe_gc.c */ -#ifdef DEBUG +#if defined(DEBUG) && !ERTS_GLB_INLINE_INCL_FUNC_DEF # define HARDDEBUG 1 #endif -#define IS_MOVED(x) (!is_header((x))) +#define IS_MOVED_BOXED(x) (!is_header((x))) +#define IS_MOVED_CONS(x) (is_non_value((x))) #define MOVE_CONS(PTR,CAR,HTOP,ORIG) \ do { \ @@ -69,4 +70,28 @@ extern Uint erts_test_long_gc_sleep; int within(Eterm *ptr, Process *p); #endif +ERTS_GLB_INLINE Eterm follow_moved(Eterm term); + +#if ERTS_GLB_INLINE_INCL_FUNC_DEF +ERTS_GLB_INLINE Eterm follow_moved(Eterm term) +{ + Eterm* ptr; + switch (primary_tag(term)) { + case TAG_PRIMARY_IMMED1: + break; + case TAG_PRIMARY_BOXED: + ptr = boxed_val(term); + if (IS_MOVED_BOXED(*ptr)) term = *ptr; + break; + case TAG_PRIMARY_LIST: + ptr = list_val(term); + if (IS_MOVED_CONS(ptr[0])) term = ptr[1]; + break; + default: + ASSERT(!"strange tag in follow_moved"); + } + return term; +} +#endif + #endif /* __ERL_GC_H__ */ |