/*===========================================================================*
* lock_bsf *
*===========================================================================*/
void lock_bsf(void)
{
struct worker_thread *org_self;
if (mutex_trylock(&bsf_lock) == 0)
return;
org_self = worker_suspend();
if (mutex_lock(&bsf_lock) != 0)
panic("unable to lock block special file lock");
worker_resume(org_self);
}
/*===========================================================================*
* lock_proc *
*===========================================================================*/
void lock_proc(struct fproc *rfp)
{
int r;
struct worker_thread *org_self;
r = mutex_trylock(&rfp->fp_lock);
if (r == 0) return;
org_self = worker_suspend();
if ((r = mutex_lock(&rfp->fp_lock)) != 0)
panic("unable to lock fproc lock: %d", r);
worker_resume(org_self);
}
/*===========================================================================*
* lock_dmap *
*===========================================================================*/
void lock_dmap(struct dmap *dp)
{
/* Lock a driver */
struct worker_thread *org_self;
int r;
assert(dp != NULL);
assert(dp->dmap_driver != NONE);
org_self = worker_suspend();
if ((r = mutex_lock(&dp->dmap_lock)) != 0)
panic("unable to get a lock on dmap: %d\n", r);
worker_resume(org_self);
}
