Imperial-MEng/pintos_22
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add implementation for recalculate effective priority, w/ T

Browse Source
This commit is contained in:
sBubshait
2024-10-20 20:37:03 +01:00
parent 8e20884a23
commit b1dba1a0bd
1 changed files with 13 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/threads/thread.c
View File

@@ -389,14 +389,8 @@ thread_set_priority (int new_base_priority)
t->base_priority = new_base_priority;
t->priority = new_base_priority;
if (!list_empty (&t->donors_list) && new_base_priority < old_priority) {
int max_donated_priority =
list_entry (list_max (&t->donors_list, priority_more, NULL),
struct thread, donor_elem)->priority;
if(new_base_priority < max_donated_priority)
t->priority = new_base_priority;
}
if (new_base_priority < old_priority)
thread_recalculate_priority ();
thread_yield ();
}
@@ -412,8 +406,17 @@ thread_get_priority (void)
void
thread_recalculate_priority (void)
{
barrier ();
};
struct thread *t = thread_current ();
if (!list_empty (&t->donors_list)) {
int max_donated_priority =
list_entry (list_max (&t->donors_list, priority_more, NULL),
struct thread, donor_elem)->priority;
if(max_donated_priority > t->priority)
t->priority = max_donated_priority;
}
}
/* Sets the current thread's nice value to NICE. */
void