From 91ba81110acd3163f7de3580b677eece0c57f5e7 Mon Sep 17 00:00:00 2001
From: Robert Morris <rtm@csail.mit.edu>
Date: Thu, 6 Jun 2019 13:54:03 -0400
Subject: gdb backtraces: -ggdb, -fno-omit-frame-pointer, BSIZE=1024

---
 proc.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'proc.c')

diff --git a/proc.c b/proc.c
index d23cb95..4ae34c8 100644
--- a/proc.c
+++ b/proc.c
@@ -560,3 +560,32 @@ either_copyin(void *dst, int user_src, uint64 src, uint64 len)
   }
 }
 
+// Print a process listing to console.  For debugging.
+// Runs when user types ^P on console.
+// No lock to avoid wedging a stuck machine further.
+void
+procdump(void)
+{
+  static char *states[] = {
+  [UNUSED]    "unused",
+  [EMBRYO]    "embryo",
+  [SLEEPING]  "sleep ",
+  [RUNNABLE]  "runble",
+  [RUNNING]   "run   ",
+  [ZOMBIE]    "zombie"
+  };
+  struct proc *p;
+  char *state;
+
+  for(p = ptable.proc; p < &ptable.proc[NPROC]; p++){
+    if(p->state == UNUSED)
+      continue;
+    if(p->state >= 0 && p->state < NELEM(states) && states[p->state])
+      state = states[p->state];
+    else
+      state = "???";
+    printf("%d %s %s", p->pid, state, p->name);
+    printf("\n");
+  }
+}
+
-- 
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