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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2001-2020. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
/* Description: A dynamic lock order checker.
* A global locking order is recorded during runtime
* and continuously checked against itself.
*
* Author: Sverker Eriksson
*/
#ifndef ERL_DYN_LOCK_CHECK_H__
#define ERL_DYN_LOCK_CHECK_H__
#ifdef ERTS_ENABLE_LOCK_CHECK
/*
* ERTS_DYN_LOCK_CHECK enables dynamic lock checker
* on NIF and driver mutexes and rwlocks.
*/
# define ERTS_DYN_LOCK_CHECK
#endif
#ifdef ERTS_DYN_LOCK_CHECK
/*
* ERTS_DYN_LOCK_CHECK_INTERNAL will also enable dynamic lock checker
* on ERTS internal mutexes and rwlocks.
*/
/*#define ERTS_DYN_LOCK_CHECK_INTERNAL*/
/* The struct to put in each lock instances */
typedef struct {
unsigned ix;
} erts_dlc_t;
void erts_dlc_create_lock(erts_dlc_t* dlc, const char* name);
int erts_dlc_lock(erts_dlc_t* dlc);
void erts_dlc_trylock(erts_dlc_t* dlc, int locked);
void erts_dlc_unlock(erts_dlc_t* dlc);
void erts_dlc_init(void);
#endif /* ERTS_DYN_LOCK_CHECK */
#endif /* !ERL_DYN_LOCK_CHECK_H__ */
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