C++ (Cpp) __mtx_lock_spin Exemples

Exemple #1

Fichier : kern_mutex.c Projet : bsd-hacker/freebsd

void
__mtx_lock_spin_flags(volatile uintptr_t *c, int opts, const char *file,
    int line)
{
	struct mtx *m;

	if (SCHEDULER_STOPPED())
		return;

	m = mtxlock2mtx(c);

	KASSERT(m->mtx_lock != MTX_DESTROYED,
	    ("mtx_lock_spin() of destroyed mutex @ %s:%d", file, line));
	KASSERT(LOCK_CLASS(&m->lock_object) == &lock_class_mtx_spin,
	    ("mtx_lock_spin() of sleep mutex %s @ %s:%d",
	    m->lock_object.lo_name, file, line));
	if (mtx_owned(m))
		KASSERT((m->lock_object.lo_flags & LO_RECURSABLE) != 0 ||
		    (opts & MTX_RECURSE) != 0,
	    ("mtx_lock_spin: recursed on non-recursive mutex %s @ %s:%d\n",
		    m->lock_object.lo_name, file, line));
	opts &= ~MTX_RECURSE;
	WITNESS_CHECKORDER(&m->lock_object, opts | LOP_NEWORDER | LOP_EXCLUSIVE,
	    file, line, NULL);
	__mtx_lock_spin(m, curthread, opts, file, line);
	LOCK_LOG_LOCK("LOCK", &m->lock_object, opts, m->mtx_recurse, file,
	    line);
	WITNESS_LOCK(&m->lock_object, opts | LOP_EXCLUSIVE, file, line);
}

Exemple #2

Fichier : kern_mutex.c Projet : edgar-pek/PerspicuOS

void
_mtx_lock_spin_flags(struct mtx *m, int opts, const char *file, int line)
{

	MPASS(curthread != NULL);
	KASSERT(m->mtx_lock != MTX_DESTROYED,
	    ("mtx_lock_spin() of destroyed mutex @ %s:%d", file, line));
	KASSERT(LOCK_CLASS(&m->lock_object) == &lock_class_mtx_spin,
	    ("mtx_lock_spin() of sleep mutex %s @ %s:%d",
	    m->lock_object.lo_name, file, line));
	if (mtx_owned(m))
		KASSERT((m->lock_object.lo_flags & LO_RECURSABLE) != 0,
	    ("mtx_lock_spin: recursed on non-recursive mutex %s @ %s:%d\n",
		    m->lock_object.lo_name, file, line));
	WITNESS_CHECKORDER(&m->lock_object, opts | LOP_NEWORDER | LOP_EXCLUSIVE,
	    file, line, NULL);
	__mtx_lock_spin(m, curthread, opts, file, line);
	LOCK_LOG_LOCK("LOCK", &m->lock_object, opts, m->mtx_recurse, file,
	    line);
	WITNESS_LOCK(&m->lock_object, opts | LOP_EXCLUSIVE, file, line);
}

Exemple #3

Fichier : kern_mutex.c Projet : 2trill2spill/freebsd

void
__mtx_lock_spin_flags(volatile uintptr_t *c, int opts, const char *file,
    int line)
{
	struct mtx *m;
#ifdef SMP
	uintptr_t tid, v;
#endif

	m = mtxlock2mtx(c);

	KASSERT(m->mtx_lock != MTX_DESTROYED,
	    ("mtx_lock_spin() of destroyed mutex @ %s:%d", file, line));
	KASSERT(LOCK_CLASS(&m->lock_object) == &lock_class_mtx_spin,
	    ("mtx_lock_spin() of sleep mutex %s @ %s:%d",
	    m->lock_object.lo_name, file, line));
	if (mtx_owned(m))
		KASSERT((m->lock_object.lo_flags & LO_RECURSABLE) != 0 ||
		    (opts & MTX_RECURSE) != 0,
	    ("mtx_lock_spin: recursed on non-recursive mutex %s @ %s:%d\n",
		    m->lock_object.lo_name, file, line));
	opts &= ~MTX_RECURSE;
	WITNESS_CHECKORDER(&m->lock_object, opts | LOP_NEWORDER | LOP_EXCLUSIVE,
	    file, line, NULL);
#ifdef SMP
	spinlock_enter();
	tid = (uintptr_t)curthread;
	v = MTX_UNOWNED;
	if (!_mtx_obtain_lock_fetch(m, &v, tid))
		_mtx_lock_spin(m, v, opts, file, line);
	else
		LOCKSTAT_PROFILE_OBTAIN_LOCK_SUCCESS(spin__acquire,
		    m, 0, 0, file, line);
#else
	__mtx_lock_spin(m, curthread, opts, file, line);
#endif
	LOCK_LOG_LOCK("LOCK", &m->lock_object, opts, m->mtx_recurse, file,
	    line);
	WITNESS_LOCK(&m->lock_object, opts | LOP_EXCLUSIVE, file, line);
}