From ef2e26c91b80556af033d3335e55f5dfa6fff31d Mon Sep 17 00:00:00 2001 From: Andrew Tridgell Date: Wed, 13 Aug 2003 01:53:07 +0000 Subject: first public release of samba4 code (This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f) --- source4/include/mutex.h | 79 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 source4/include/mutex.h (limited to 'source4/include/mutex.h') diff --git a/source4/include/mutex.h b/source4/include/mutex.h new file mode 100644 index 0000000000..c3e146d415 --- /dev/null +++ b/source4/include/mutex.h @@ -0,0 +1,79 @@ +#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 2 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +/* To add a new mutex, add it to enum mutex_id + */ +enum mutex_id { MUTEX_SMBD, /* global smbd lock */ + MUTEX_TALLOC, /* global talloc.c lock */ + MUTEX_DEBUG, /* global debug.c lock */ + MUTEX_TANK, /* vfs_tank lock */ + + MUTEX_MAX /* this MUST be kept last */ +}; + +/* 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) mutex_lock_by_id(mutex_index, #mutex_index) +#define MUTEX_UNLOCK_BY_ID(mutex_index) mutex_unlock_by_id(mutex_index, #mutex_index) +#define MUTEX_INIT(mutex, name) mutex_init(mutex, #name) +#define MUTEX_DESTROY(mutex, name) mutex_destroy(mutex, #name) +#define MUTEX_LOCK(mutex, name) mutex_lock(mutex, #name) +#define MUTEX_UNLOCK(mutex, name) mutex_unlock(mutex, #name) + +#define RWLOCK_INIT(rwlock, name) rwlock_init(rwlock, #name) +#define RWLOCK_DESTROY(rwlock, name) rwlock_destroy(rwlock, #name) +#define RWLOCK_LOCK_WRITE(rwlock, name) rwlock_lock_write(rwlock, #name) +#define RWLOCK_LOCK_READ(rwlock, name) rwlock_lock_read(rwlock, #name) +#define RWLOCK_UNLOCK(rwlock, name) rwlock_unlock(rwlock, #name) + + + +/* this null typedef ensures we get the types right and avoids the + pitfalls of void* */ +typedef struct { + void *mutex; +} mutex_t; +typedef struct { + void *rwlock; +} rwlock_t; + +/* the mutex model operations structure - contains function pointers to + the model-specific implementations of each operation */ +struct mutex_ops { + int (*mutex_init)(mutex_t *mutex, const char *name); + int (*mutex_lock)(mutex_t *mutex, const char *name); + int (*mutex_unlock)(mutex_t *mutex, const char *name); + int (*mutex_destroy)(mutex_t *mutex, const char *name); + int (*rwlock_init)(rwlock_t *rwlock, const char *name); + int (*rwlock_lock_write)(rwlock_t *rwlock, const char *name); + int (*rwlock_lock_read)(rwlock_t *rwlock, const char *name); + int (*rwlock_unlock)(rwlock_t *rwlock, const char *name); + int (*rwlock_destroy)(rwlock_t *rwlock, const char *name); +}; + +#endif /* ndef _MUTEX_H_ */ -- cgit