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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_db_hash.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_db_hash.c')
| -rw-r--r-- | erts/emulator/beam/erl_db_hash.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c index 038a667b06..c726be5fb4 100644 --- a/erts/emulator/beam/erl_db_hash.c +++ b/erts/emulator/beam/erl_db_hash.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1998-2011. All Rights Reserved. + * Copyright Ericsson AB 1998-2012. 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 @@ -105,11 +105,7 @@ #define NSEG_2 256 /* Size of second segment table */ #define NSEG_INC 128 /* Number of segments to grow after that */ -#ifdef ETHR_ORDERED_READ_DEPEND -#define SEGTAB(tb) ((struct segment**)erts_smp_atomic_read_nob(&(tb)->segtab)) -#else -#define SEGTAB(tb) ((struct segment**)erts_smp_atomic_read_rb(&(tb)->segtab)) -#endif +#define SEGTAB(tb) ((struct segment**)erts_smp_atomic_read_ddrb(&(tb)->segtab)) #define NACTIVE(tb) ((int)erts_smp_atomic_read_nob(&(tb)->nactive)) #define NITEMS(tb) ((int)erts_smp_atomic_read_nob(&(tb)->common.nitems)) |