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| author | Rickard Green <[email protected]> | 2012-02-16 02:38:50 +0100 |
|---|---|---|
| committer | Rickard Green <[email protected]> | 2012-02-19 22:57:50 +0100 |
| commit | cfb7f3fcffad43647be5b9b818310b44003b97ab (patch) | |
| tree | 7be84d307c19b967fdc215d50126d14845c63743 /erts/emulator/beam/erl_thr_queue.c | |
| parent | a67091debf20c972dd7ce1a8379fee6673fbe571 (diff) | |
| download | otp-cfb7f3fcffad43647be5b9b818310b44003b97ab.tar.gz otp-cfb7f3fcffad43647be5b9b818310b44003b97ab.tar.bz2 otp-cfb7f3fcffad43647be5b9b818310b44003b97ab.zip | |
Misc memory barrier fixes
- Document barrier semantics
- Introduce ddrb suffix on atomic ops
- Barrier macros for both non-SMP and SMP case
- Make the thread progress API a bit more intuitive
Diffstat (limited to 'erts/emulator/beam/erl_thr_queue.c')
| -rw-r--r-- | erts/emulator/beam/erl_thr_queue.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/erts/emulator/beam/erl_thr_queue.c b/erts/emulator/beam/erl_thr_queue.c index efb8c635d7..70949ece76 100644 --- a/erts/emulator/beam/erl_thr_queue.c +++ b/erts/emulator/beam/erl_thr_queue.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 2011. All Rights Reserved. + * Copyright Ericsson AB 2011-2012. 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 @@ -418,10 +418,9 @@ clean(ErtsThrQ_t *q, int max_ops, int do_notify) } if (q->head.unref_end == (ErtsThrQElement_t *) ilast) - ERTS_THR_MEMORY_BARRIER; + ERTS_SMP_MEMORY_BARRIER; else { q->head.next.unref_end = (ErtsThrQElement_t *) ilast; - ERTS_THR_MEMORY_BARRIER; #ifdef ERTS_SMP q->head.next.thr_progress = erts_thr_progress_later(); #endif |