void fibril_mutex_unlock(fibril_mutex_t *fm)
{
assert(fibril_mutex_is_locked(fm));
futex_down(&async_futex);
_fibril_mutex_unlock_unsafe(fm);
futex_up(&async_futex);
}
/** Decrement reference count of VFS file structure.
*
* @param file File structure that will have reference count
* decremented.
*/
static int vfs_file_delref(vfs_client_data_t *vfs_data, vfs_file_t *file)
{
int rc = EOK;
assert(fibril_mutex_is_locked(&vfs_data->lock));
if (file->refcnt-- == 1) {
/*
* Lost the last reference to a file, need to close it in the
* endpoint FS and drop our reference to the underlying VFS node.
*/
rc = vfs_file_close_remote(file);
vfs_node_delref(file->node);
free(file);
}
return rc;
}
int
fibril_condvar_wait_timeout(fibril_condvar_t *fcv, fibril_mutex_t *fm,
suseconds_t timeout)
{
awaiter_t wdata;
assert(fibril_mutex_is_locked(fm));
if (timeout < 0)
return ETIMEOUT;
awaiter_initialize(&wdata);
wdata.fid = fibril_get_id();
wdata.to_event.inlist = timeout > 0;
wdata.wu_event.inlist = true;
futex_down(&async_futex);
if (timeout) {
getuptime(&wdata.to_event.expires);
tv_add(&wdata.to_event.expires, timeout);
async_insert_timeout(&wdata);
}
list_append(&wdata.wu_event.link, &fcv->waiters);
_fibril_mutex_unlock_unsafe(fm);
fibril_switch(FIBRIL_TO_MANAGER);
fibril_mutex_lock(fm);
/* async_futex not held after fibril_switch() */
futex_down(&async_futex);
if (wdata.to_event.inlist)
list_remove(&wdata.to_event.link);
if (wdata.wu_event.inlist)
list_remove(&wdata.wu_event.link);
futex_up(&async_futex);
return wdata.to_event.occurred ? ETIMEOUT : EOK;
}
/** Increment reference count of VFS file structure.
*
* @param file File structure that will have reference count
* incremented.
*/
static void vfs_file_addref(vfs_client_data_t *vfs_data, vfs_file_t *file)
{
assert(fibril_mutex_is_locked(&vfs_data->lock));
file->refcnt++;
}
