int
__pthread_mutex_trylock (pthread_mutex_t *mtxp)
{
struct __pthread *self;
int ret;
switch (MTX_TYPE (mtxp))
{
case PT_MTX_NORMAL:
ret = lll_trylock (&mtxp->__lock);
if (ret)
ret = EBUSY;
break;
case PT_MTX_RECURSIVE:
self = _pthread_self ();
if (mtx_owned_p (mtxp, self, mtxp->__flags))
{
if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
return EAGAIN;
++mtxp->__cnt;
ret = 0;
}
else if ((ret = lll_trylock (&mtxp->__lock)) == 0)
{
mtx_set_owner (mtxp, self, mtxp->__flags);
mtxp->__cnt = 1;
}
else
ret = EBUSY;
break;
case PT_MTX_ERRORCHECK:
self = _pthread_self ();
if ((ret = lll_trylock (&mtxp->__lock)) == 0)
mtx_set_owner (mtxp, self, mtxp->__flags);
else
ret = EBUSY;
break;
case PT_MTX_NORMAL | PTHREAD_MUTEX_ROBUST:
case PT_MTX_RECURSIVE | PTHREAD_MUTEX_ROBUST:
case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
self = _pthread_self ();
ROBUST_LOCK (self, mtxp, __lll_robust_trylock);
break;
default:
ret = EINVAL;
break;
}
return ret;
}
int pthread_mutex_timedlock (pthread_mutex_t *mtxp,
const struct timespec *tsp)
{
struct pthread *self = PTHREAD_SELF;
int ret, flags = mtxp->__flags & GSYNC_SHARED;
switch (MTX_TYPE (mtxp))
{
case PTHREAD_MUTEX_NORMAL:
ret = lll_abstimed_lock (&mtxp->__lock, tsp, flags);
break;
case PTHREAD_MUTEX_RECURSIVE:
if (mtx_owned_p (mtxp, self, flags))
{
if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
return (EAGAIN);
++mtxp->__cnt;
ret = 0;
}
else if ((ret = lll_abstimed_lock (&mtxp->__lock,
tsp, flags)) == 0)
{
mtx_set_owner (mtxp, self, flags);
mtxp->__cnt = 1;
}
break;
case PTHREAD_MUTEX_ERRORCHECK:
if (mtxp->__owner_id == self->id)
return (EDEADLK);
else if ((ret = lll_abstimed_lock (&mtxp->__lock,
tsp, flags)) == 0)
mtx_set_owner (mtxp, self, flags);
break;
case PTHREAD_MUTEX_NORMAL | PTHREAD_MUTEX_ROBUST:
case PTHREAD_MUTEX_RECURSIVE | PTHREAD_MUTEX_ROBUST:
case PTHREAD_MUTEX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
ROBUST_LOCK (self, mtxp, lll_robust_abstimed_lock, tsp, flags);
break;
default:
ret = EINVAL;
break;
}
return (ret);
}
int pthread_mutex_trylock (pthread_mutex_t *mtxp)
{
struct pthread *self = PTHREAD_SELF;
int ret;
switch (MTX_TYPE (mtxp))
{
case PTHREAD_MUTEX_NORMAL:
ret = lll_trylock (&mtxp->__lock);
break;
case PTHREAD_MUTEX_RECURSIVE:
if (mtx_owned_p (mtxp, self, mtxp->__flags))
{
if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
return (EAGAIN);
++mtxp->__cnt;
ret = 0;
}
else if ((ret = lll_trylock (&mtxp->__lock)) == 0)
{
mtx_set_owner (mtxp, self, mtxp->__flags);
mtxp->__cnt = 1;
}
break;
case PTHREAD_MUTEX_ERRORCHECK:
if (mtx_owned_p (mtxp, self, mtxp->__flags))
ret = EDEADLK;
else if ((ret = lll_trylock (&mtxp->__lock)) == 0)
mtx_set_owner (mtxp, self, mtxp->__flags);
break;
case PTHREAD_MUTEX_NORMAL | PTHREAD_MUTEX_ROBUST:
case PTHREAD_MUTEX_RECURSIVE | PTHREAD_MUTEX_ROBUST:
case PTHREAD_MUTEX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
ROBUST_LOCK (self, mtxp, lll_robust_trylock);
break;
default:
ret = EINVAL;
break;
}
return (ret);
}
int pthread_mutex_lock (pthread_mutex_t *mtxp)
{
struct pthread *self = PTHREAD_SELF;
int flags = mtxp->__flags & GSYNC_SHARED;
int ret = 0;
switch (MTX_TYPE (mtxp))
{
case PTHREAD_MUTEX_NORMAL:
lll_lock (&mtxp->__lock, flags);
break;
case PTHREAD_MUTEX_RECURSIVE:
if (mtx_owned_p (mtxp, self, flags))
{
if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
return (EAGAIN);
++mtxp->__cnt;
return (ret);
}
lll_lock (&mtxp->__lock, flags);
mtx_set_owner (mtxp, self, flags);
mtxp->__cnt = 1;
break;
case PTHREAD_MUTEX_ERRORCHECK:
if (mtx_owned_p (mtxp, self, flags))
return (EDEADLK);
lll_lock (&mtxp->__lock, flags);
mtx_set_owner (mtxp, self, flags);
break;
case PTHREAD_MUTEX_NORMAL | PTHREAD_MUTEX_ROBUST:
case PTHREAD_MUTEX_RECURSIVE | PTHREAD_MUTEX_ROBUST:
case PTHREAD_MUTEX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
ROBUST_LOCK (self, mtxp, lll_robust_lock, flags);
break;
default:
ret = EINVAL;
break;
}
return (ret);
}
