diff options
Diffstat (limited to 'erts/emulator/beam/erl_lock_count.h')
| -rw-r--r-- | erts/emulator/beam/erl_lock_count.h | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/erts/emulator/beam/erl_lock_count.h b/erts/emulator/beam/erl_lock_count.h index 8564c36203..e3044c371f 100644 --- a/erts/emulator/beam/erl_lock_count.h +++ b/erts/emulator/beam/erl_lock_count.h @@ -1,19 +1,19 @@ /* * %CopyrightBegin% - * - * Copyright Ericsson AB 2008-2009. All Rights Reserved. - * + * + * Copyright Ericsson AB 2008-2010. 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% */ @@ -39,6 +39,20 @@ * Each instance of a lock is the unique lock, i.e. set and id in that set. * For each lock there is a set of statistics with where and what impact * the lock aqusition had. + * + * Runtime options + * - suspend, used when internal lock-counting can't be applied. For instance + * when allocating a term for the outside and halloc needs to be used. + * Default: off. + * - location, reserved and not used. + * - proclock, disable proclock counting. Used when performance might be an + * issue. Accessible from erts_debug:lock_counters({process_locks, bool()}). + * Default: off. + * - copysave, enable saving of destroyed locks (and thereby its statistics). + * If memory constraints is an issue this need to be disabled. + * Accessible from erts_debug:lock_counters({copy_save, bool()}). + * Default: off. + * */ #include "sys.h" @@ -74,6 +88,7 @@ #define ERTS_LCNT_OPT_SUSPEND (((Uint16) 1) << 0) #define ERTS_LCNT_OPT_LOCATION (((Uint16) 1) << 1) #define ERTS_LCNT_OPT_PROCLOCK (((Uint16) 1) << 2) +#define ERTS_LCNT_OPT_COPYSAVE (((Uint16) 1) << 3) typedef struct { unsigned long s; |