no more recursive locks

wakeup1() assumes you hold proc_table_lock
sleep(chan, lock) provides atomic sleep-and-release to wait for condition
ugly code in swtch/scheduler to implement new sleep
fix lots of bugs in pipes, wait, and exit
fix bugs if timer interrupt goes off in schedule()
console locks per line, not per byte

1 files changed, 1 insertions, 0 deletions

diff --git a/proc.h b/proc.h
index e13df41..d8aa84f 100644
--- a/proc.h
+++ b/proc.h
@@ -41,6 +41,7 @@ struct proc{
   char *kstack; // kernel stack, separate from mem so it doesn't move
   enum proc_state state;
   enum proc_state newstate; // desired state after swtch()
+  struct spinlock *mtx; // mutex for condition variable
   int pid;
   int ppid;
   void *chan; // sleep