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6aa6dce3f7
decide to reinstate the mutex code for the threads process model, I'd
like to do it a little differently. At least this gets it out of
includes.h for now.
(This used to be commit cfee0fb02e)
70 lines
2.7 KiB
C
70 lines
2.7 KiB
C
#ifndef _MUTEX_H_
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#define _MUTEX_H_
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/*
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Unix SMB/CIFS implementation.
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Samba mutex functions
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Copyright (C) Andrew Tridgell 2003
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Copyright (C) James J Myers 2003
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* To add a new read/write lock, add it to enum rwlock_id
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*/
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enum rwlock_id { RWLOCK_SMBD, /* global smbd lock */
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RWLOCK_MAX /* this MUST be kept last */
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};
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#define MUTEX_LOCK_BY_ID(mutex_index) smb_mutex_lock_by_id(mutex_index, #mutex_index)
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#define MUTEX_UNLOCK_BY_ID(mutex_index) smb_mutex_unlock_by_id(mutex_index, #mutex_index)
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#define MUTEX_INIT(mutex, name) smb_mutex_init(mutex, #name)
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#define MUTEX_DESTROY(mutex, name) smb_mutex_destroy(mutex, #name)
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#define MUTEX_LOCK(mutex, name) smb_mutex_lock(mutex, #name)
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#define MUTEX_UNLOCK(mutex, name) smb_mutex_unlock(mutex, #name)
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#define RWLOCK_INIT(rwlock, name) smb_rwlock_init(rwlock, #name)
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#define RWLOCK_DESTROY(rwlock, name) smb_rwlock_destroy(rwlock, #name)
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#define RWLOCK_LOCK_WRITE(rwlock, name) smb_rwlock_lock_write(rwlock, #name)
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#define RWLOCK_LOCK_READ(rwlock, name) smb_rwlock_lock_read(rwlock, #name)
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#define RWLOCK_UNLOCK(rwlock, name) smb_rwlock_unlock(rwlock, #name)
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/* this null typedef ensures we get the types right and avoids the
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pitfalls of void* */
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typedef struct smb_mutex {
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void *mutex;
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} smb_mutex_t;
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typedef struct {
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void *rwlock;
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} smb_rwlock_t;
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/* the mutex model operations structure - contains function pointers to
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the model-specific implementations of each operation */
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struct mutex_ops {
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int (*mutex_init)(smb_mutex_t *mutex, const char *name);
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int (*mutex_lock)(smb_mutex_t *mutex, const char *name);
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int (*mutex_unlock)(smb_mutex_t *mutex, const char *name);
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int (*mutex_destroy)(smb_mutex_t *mutex, const char *name);
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int (*rwlock_init)(smb_rwlock_t *rwlock, const char *name);
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int (*rwlock_lock_write)(smb_rwlock_t *rwlock, const char *name);
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int (*rwlock_lock_read)(smb_rwlock_t *rwlock, const char *name);
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int (*rwlock_unlock)(smb_rwlock_t *rwlock, const char *name);
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int (*rwlock_destroy)(smb_rwlock_t *rwlock, const char *name);
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};
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#endif /* ndef _MUTEX_H_ */
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