From b53f8a67649a371a38dc6d97b0dfe52111236a3e Mon Sep 17 00:00:00 2001 From: Rickard Green Date: Tue, 1 Jun 2010 13:50:50 +0000 Subject: OTP-8658 Add missing memory barriers in erts_poll() Missing memory barriers in erts_poll() could cause the runtime system to hang indefinitely. --- erts/emulator/beam/erl_threads.h | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'erts/emulator/beam/erl_threads.h') diff --git a/erts/emulator/beam/erl_threads.h b/erts/emulator/beam/erl_threads.h index d635916dd8..21f85bd045 100644 --- a/erts/emulator/beam/erl_threads.h +++ b/erts/emulator/beam/erl_threads.h @@ -1,19 +1,19 @@ /* * %CopyrightBegin% - * - * Copyright Ericsson AB 2001-2009. All Rights Reserved. - * + * + * Copyright Ericsson AB 2001-2010. 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% */ @@ -34,6 +34,8 @@ #include "erl_lock_count.h" #include "erl_term.h" +#define ERTS_THR_MEMORY_BARRIER ETHR_MEMORY_BARRIER + #ifdef ERTS_ENABLE_LOCK_COUNT #define erts_mtx_lock(L) erts_mtx_lock_x(L, __FILE__, __LINE__) #define erts_spin_lock(L) erts_spin_lock_x(L, __FILE__, __LINE__) @@ -122,6 +124,8 @@ __decl_noreturn void __noreturn erts_thr_fatal_error(int, char *); #else /* #ifdef USE_THREADS */ +#define ERTS_THR_MEMORY_BARRIER + #define ERTS_THR_OPTS_DEFAULT_INITER 0 typedef int erts_thr_opts_t; typedef int erts_thr_init_data_t; -- cgit v1.2.3