mutex_owner
Returns the thread pointer to the current owner of the specified kernel mutex.
vmlinux`struct task_struct mutex_owner(vmlinux`struct mutex *)
The mutex_owner
function returns the thread pointer of the current owner
of the specified adaptive kernel mutex. mutex_owner
returns
NULL
if the specified adaptive mutex is unowned or if the specified mutex
is a spin mutex.
Example 7-29 How to use mutex_owner to check whether the calling thread doesn't have ownership of a mutex
fbt::mutex_lock:entry
{
this->mutex = arg0;
}
fbt::mutex_lock:return
{
this->owner = mutex_owner((struct mutex *)this->mutex);
}
fbt::mutex_lock:return
/this->owner != curthread/
{
printf("current thread is not current owner of owned lock\n");
exit(1);
}