Imperial-MEng/pintos_22
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Merge implementations of priority scheduling form Themis and Saleh #10

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td1223 wants to merge 13 commits from task1/priority-scheduling into task1/merged/priority-scheduling
pull from: task1/priority-scheduling
merge into: Imperial-MEng:task1/merged/priority-scheduling
Conversation 2 Commits 13 Files Changed 3 +25 -139
4 changed files with 25 additions and 139 deletions
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Showing only changes of commit 6855a48603 - Show all commits

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src/threads/synch.c
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@@ -68,7 +68,8 @@ sema_down (struct semaphore *sema)
old_level = intr_disable ();
while (sema->value == 0)
{
list_push_back (&sema->waiters, &thread_current ()->elem);
list_insert_ordered (&sema->waiters, &thread_current ()->elem,
&thread_priority_greater, NULL);
thread_block ();
}
sema->value--;
@@ -118,6 +119,7 @@ sema_up (struct semaphore *sema)
struct thread, elem));
sema->value++;
intr_set_level (old_level);
thread_yield ();
}
static void sema_test_helper (void *sema_);