| |
| /*--------------------------------------------------------------------*/ |
| /*--- Scheduler lock support functions sched-lock.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2011-2015 Bart Van Assche <bvanassche@acm.org>. |
| |
| 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #include "config.h" |
| #include "pub_core_basics.h" |
| #include "pub_core_libcbase.h" |
| #include "pub_core_mallocfree.h" |
| #include "priv_sema.h" |
| #include "priv_sched-lock.h" |
| #include "priv_sched-lock-impl.h" |
| |
| static struct sched_lock_ops const *sched_lock_ops = |
| &ML_(generic_sched_lock_ops); |
| |
| static struct sched_lock_ops const *const sched_lock_impl[] = { |
| [sched_lock_generic] = &ML_(generic_sched_lock_ops), |
| #ifdef ENABLE_LINUX_TICKET_LOCK |
| [sched_lock_ticket] = &ML_(linux_ticket_lock_ops), |
| #endif |
| }; |
| |
| /** |
| * Define which scheduler lock implementation to use. |
| * |
| * @param[in] t Scheduler lock type. |
| * |
| * @return True if and only if this function succeeded. |
| * |
| * @note Must be called before any other sched_lock*() function is invoked. |
| */ |
| Bool ML_(set_sched_lock_impl)(const enum SchedLockType t) |
| { |
| struct sched_lock_ops const *p = NULL; |
| |
| if ((unsigned)t < sizeof(sched_lock_impl)/sizeof(sched_lock_impl[0])) |
| p = sched_lock_impl[t]; |
| if (p) |
| sched_lock_ops = p; |
| return !!p; |
| } |
| |
| const HChar *ML_(get_sched_lock_name)(void) |
| { |
| return (sched_lock_ops->get_sched_lock_name)(); |
| } |
| |
| struct sched_lock *ML_(create_sched_lock)(void) |
| { |
| return (sched_lock_ops->create_sched_lock)(); |
| } |
| |
| void ML_(destroy_sched_lock)(struct sched_lock *p) |
| { |
| return (sched_lock_ops->destroy_sched_lock)(p); |
| } |
| |
| int ML_(get_sched_lock_owner)(struct sched_lock *p) |
| { |
| return (sched_lock_ops->get_sched_lock_owner)(p); |
| } |
| |
| void ML_(acquire_sched_lock)(struct sched_lock *p) |
| { |
| return (sched_lock_ops->acquire_sched_lock)(p); |
| } |
| |
| void ML_(release_sched_lock)(struct sched_lock *p) |
| { |
| return (sched_lock_ops->release_sched_lock)(p); |
| } |