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/*--------------------------------------------------------------------*/
/*--- Scheduler lock support functions sched-lock.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2011-2013 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);
}
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