On Fri Aug 22, 2014 at 16:45:51 -0400, Yuxin Ren wrote:
In the Base_mappable class, in /fiasco/src/kern/mapping_tree.cpp file, what is type of the lock in this class, helping lock, spin lock or others?
Looks like it's a Helping_lock.
And usually I find it is hard to identify the type of a lock. Could someone tell me how to figure out the lock's type?
What I did just now: - Look up src/kern/mapping_tree.cpp, find class Base_mappable, find this line in the class: typedef ::Lock Lock; - Seeing that Lock is of type ::Lock - Searching for 'lock' within the file - Finding out that #include "lock.h" is the most obvious way to go on searching - Opening src/kern/lock.cpp - Seeing: typedef Helping_lock Lock; - Done
So the point with going further to lock.cpp may not be so obvious but generally it's just reading around in the code.
Adam