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#ifndef _MUTEX_H_
#define _MUTEX_H_
/*
Unix SMB/CIFS implementation.
Samba mutex functions
Copyright (C) Andrew Tridgell 2003
Copyright (C) James J Myers 2003
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file
* @brief Mutex operations
*/
struct mutex_ops;
/* To add a new read/write lock, add it to enum rwlock_id
*/
enum rwlock_id { RWLOCK_SMBD, /* global smbd lock */
RWLOCK_MAX /* this MUST be kept last */
};
#define MUTEX_LOCK_BY_ID(mutex_index) smb_mutex_lock_by_id(mutex_index, #mutex_index)
#define MUTEX_UNLOCK_BY_ID(mutex_index) smb_mutex_unlock_by_id(mutex_index, #mutex_index)
#define MUTEX_INIT(mutex, name) smb_mutex_init(mutex, #name)
#define MUTEX_DESTROY(mutex, name) smb_mutex_destroy(mutex, #name)
#define MUTEX_LOCK(mutex, name) smb_mutex_lock(mutex, #name)
#define MUTEX_UNLOCK(mutex, name) smb_mutex_unlock(mutex, #name)
#define RWLOCK_INIT(rwlock, name) smb_rwlock_init(rwlock, #name)
#define RWLOCK_DESTROY(rwlock, name) smb_rwlock_destroy(rwlock, #name)
#define RWLOCK_LOCK_WRITE(rwlock, name) smb_rwlock_lock_write(rwlock, #name)
#define RWLOCK_LOCK_READ(rwlock, name) smb_rwlock_lock_read(rwlock, #name)
#define RWLOCK_UNLOCK(rwlock, name) smb_rwlock_unlock(rwlock, #name)
/* this null typedef ensures we get the types right and avoids the
pitfalls of void* */
typedef struct smb_mutex {
void *mutex;
} smb_mutex_t;
typedef struct {
void *rwlock;
} smb_rwlock_t;
/* the mutex model operations structure - contains function pointers to
the model-specific implementations of each operation */
struct mutex_ops {
int (*mutex_init)(smb_mutex_t *mutex, const char *name);
int (*mutex_lock)(smb_mutex_t *mutex, const char *name);
int (*mutex_unlock)(smb_mutex_t *mutex, const char *name);
int (*mutex_destroy)(smb_mutex_t *mutex, const char *name);
int (*rwlock_init)(smb_rwlock_t *rwlock, const char *name);
int (*rwlock_lock_write)(smb_rwlock_t *rwlock, const char *name);
int (*rwlock_lock_read)(smb_rwlock_t *rwlock, const char *name);
int (*rwlock_unlock)(smb_rwlock_t *rwlock, const char *name);
int (*rwlock_destroy)(smb_rwlock_t *rwlock, const char *name);
};
#endif /* endif _MUTEX_H_ */
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