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/*
* ivykis, an event handling library
* Copyright (C) 2012 Lennert Buytenhek
* Dedicated to Marija Kulikova.
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version
* 2.1 as published by the Free Software Foundation.
*
* 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 version 2.1 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License version 2.1 along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#ifdef HAVE_PTHREAD_SPIN_LOCK
#define spinlock_t pthread_spinlock_t
static inline void spin_init(spinlock_t *lock)
{
pthread_spin_init(lock, PTHREAD_PROCESS_PRIVATE);
}
static inline void spin_lock(spinlock_t *lock)
{
pthread_spin_lock(lock);
}
static inline void spin_unlock(spinlock_t *lock)
{
pthread_spin_unlock(lock);
}
#else
typedef unsigned long spinlock_t;
static inline void spin_init(spinlock_t *lock)
{
*lock = 0;
}
static inline void spin_lock(spinlock_t *lock)
{
while (__sync_lock_test_and_set(lock, 1) == 1)
;
}
static inline void spin_unlock(spinlock_t *lock)
{
__sync_lock_release(lock);
}
#endif
static inline void spin_lock_sigmask(spinlock_t *lock, sigset_t *mask)
{
sigfillset(mask);
pthread_sigmask(SIG_BLOCK, mask, mask);
spin_lock(lock);
}
static inline void spin_unlock_sigmask(spinlock_t *lock, sigset_t *mask)
{
spin_unlock(lock);
pthread_sigmask(SIG_SETMASK, mask, NULL);
}
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