X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu-bp.h;fp=urcu-bp.h;h=0000000000000000000000000000000000000000;hp=7a265dc5f91b1899ef35a73d31eb7782d4d2e5a3;hb=6893800a4d1cc14dff0395ddcd660a5138db183d;hpb=a59f39055b5ecb77b68cf78b9839aa9e8e4ec332 diff --git a/urcu-bp.h b/urcu-bp.h deleted file mode 100644 index 7a265dc..0000000 --- a/urcu-bp.h +++ /dev/null @@ -1,191 +0,0 @@ -#ifndef _URCU_BP_H -#define _URCU_BP_H - -/* - * urcu-bp.h - * - * Userspace RCU header, "bulletproof" version. - * - * Slower RCU read-side adapted for tracing library. Does not require thread - * registration nor unregistration. Also signal-safe. - * - * Copyright (c) 2009 Mathieu Desnoyers - * Copyright (c) 2009 Paul E. McKenney, IBM Corporation. - * - * LGPL-compatible code should include this header with : - * - * #define _LGPL_SOURCE - * #include - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * IBM's contributions to this file may be relicensed under LGPLv2 or later. - */ - -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -#include - -/* - * Important ! - * - * Each thread containing read-side critical sections must be registered - * with rcu_register_thread() before calling rcu_read_lock(). - * rcu_unregister_thread() should be called before the thread exits. - */ - -/* - * See urcu-pointer.h and urcu/static/urcu-pointer.h for pointer - * publication headers. - */ -#include - -#ifdef _LGPL_SOURCE - -#include - -/* - * Mappings for static use of the userspace RCU library. - * Should only be used in LGPL-compatible code. - */ - -/* - * rcu_read_lock() - * rcu_read_unlock() - * - * Mark the beginning and end of a read-side critical section. - */ -#define rcu_read_lock_bp _rcu_read_lock -#define rcu_read_unlock_bp _rcu_read_unlock -#define rcu_read_ongoing_bp _rcu_read_ongoing - -#define rcu_dereference_bp rcu_dereference -#define rcu_cmpxchg_pointer_bp rcu_cmpxchg_pointer -#define rcu_xchg_pointer_bp rcu_xchg_pointer -#define rcu_set_pointer_bp rcu_set_pointer - -#else /* !_LGPL_SOURCE */ - -/* - * library wrappers to be used by non-LGPL compatible source code. - * See LGPL-only urcu/static/urcu-pointer.h for documentation. - */ - -extern void rcu_read_lock(void); -extern void rcu_read_unlock(void); -extern int rcu_read_ongoing(void); - -extern void *rcu_dereference_sym_bp(void *p); -#define rcu_dereference_bp(p) \ - __extension__ \ - ({ \ - __typeof__(p) _________p1 = URCU_FORCE_CAST(__typeof__(p), \ - rcu_dereference_sym_bp(URCU_FORCE_CAST(void *, p))); \ - (_________p1); \ - }) - -extern void *rcu_cmpxchg_pointer_sym_bp(void **p, void *old, void *_new); -#define rcu_cmpxchg_pointer_bp(p, old, _new) \ - __extension__ \ - ({ \ - __typeof__(*(p)) _________pold = (old); \ - __typeof__(*(p)) _________pnew = (_new); \ - __typeof__(*(p)) _________p1 = URCU_FORCE_CAST(__typeof__(*(p)), \ - rcu_cmpxchg_pointer_sym_bp(URCU_FORCE_CAST(void **, p), \ - _________pold, \ - _________pnew)); \ - (_________p1); \ - }) - -extern void *rcu_xchg_pointer_sym_bp(void **p, void *v); -#define rcu_xchg_pointer_bp(p, v) \ - __extension__ \ - ({ \ - __typeof__(*(p)) _________pv = (v); \ - __typeof__(*(p)) _________p1 = URCU_FORCE_CAST(__typeof__(*(p)),\ - rcu_xchg_pointer_sym_bp(URCU_FORCE_CAST(void **, p), \ - _________pv)); \ - (_________p1); \ - }) - -extern void *rcu_set_pointer_sym_bp(void **p, void *v); -#define rcu_set_pointer_bp(p, v) \ - __extension__ \ - ({ \ - __typeof__(*(p)) _________pv = (v); \ - __typeof__(*(p)) _________p1 = URCU_FORCE_CAST(__typeof__(*(p)), \ - rcu_set_pointer_sym_bp(URCU_FORCE_CAST(void **, p), \ - _________pv)); \ - (_________p1); \ - }) - -#endif /* !_LGPL_SOURCE */ - -extern void synchronize_rcu(void); - -/* - * rcu_bp_before_fork, rcu_bp_after_fork_parent and rcu_bp_after_fork_child - * should be called around fork() system calls when the child process is not - * expected to immediately perform an exec(). For pthread users, see - * pthread_atfork(3). - */ -extern void rcu_bp_before_fork(void); -extern void rcu_bp_after_fork_parent(void); -extern void rcu_bp_after_fork_child(void); - -/* - * In the bulletproof version, the following functions are no-ops. - */ -static inline void rcu_register_thread(void) -{ -} - -static inline void rcu_unregister_thread(void) -{ -} - -static inline void rcu_init(void) -{ -} - -/* - * Q.S. reporting are no-ops for these URCU flavors. - */ -static inline void rcu_quiescent_state(void) -{ -} - -static inline void rcu_thread_offline(void) -{ -} - -static inline void rcu_thread_online(void) -{ -} - -#ifdef __cplusplus -} -#endif - -#include -#include -#include - -#endif /* _URCU_BP_H */