From 90209e4d57dd9b5ff27729b582f02c3d9e383f72 Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Tue, 17 Jan 2012 12:16:39 +0100 Subject: erts: Multiple export tab's using code_ix Still blocking code loading --- erts/emulator/beam/code_ix.h | 65 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 erts/emulator/beam/code_ix.h (limited to 'erts/emulator/beam/code_ix.h') diff --git a/erts/emulator/beam/code_ix.h b/erts/emulator/beam/code_ix.h new file mode 100644 index 0000000000..6b81102269 --- /dev/null +++ b/erts/emulator/beam/code_ix.h @@ -0,0 +1,65 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2012-2012. 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 + * 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% + */ +#ifndef __CODE_IX_H__ +#define __CODE_IX_H__ + + +#define ERTS_NUM_CODE_IX 3 +typedef unsigned ErtsCodeIndex; + +void erts_code_ix_init(void); +ErtsCodeIndex erts_active_code_ix(void); +ErtsCodeIndex erts_loader_code_ix(void); + +/* Lock code_ix (enqueue and suspend until we get it) +*/ +void erts_lock_code_ix(void); + +/*SVERK + erts_lock_code_ix(); + wait for thread progress + (we don't want any retarded threads with pointers to inactive Module) + Copy active -> loader + rlock old_code while copying Modules + Update loader + wait for thread progress + (we need a membarrier for everybody to "see" the new code) + Set loader as new active + erts_unlock_code_ix(); +}*/ + + +/* Unlock code_ix (resume first waiter) +*/ +void erts_unlock_code_ix(void); +void erts_start_loader_code_ix(void); +void erts_commit_loader_code_ix(void); +void erts_abort_loader_code_ix(void); + +void erts_rwlock_old_code(void); +void erts_rwunlock_old_code(void); +void erts_rlock_old_code(void); +void erts_runlock_old_code(void); + +#ifdef ERTS_ENABLE_LOCK_CHECK +int erts_is_old_code_rlocked(void); +int erts_is_code_ix_locked(void); +#endif + +#endif /* !__CODE_IX_H__ */ -- cgit v1.2.3