From b01017897db7a4000d3f6f024e0b3800d0f10790 Mon Sep 17 00:00:00 2001
From: Brian Norris <banorris@uci.edu>
Date: Thu, 3 May 2012 14:04:38 -0700
Subject: [PATCH] threads: add parent info + get_parent() method

---
 threads.cc | 1 +
 threads.h  | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/threads.cc b/threads.cc
index bc553b1..cc93931 100644
--- a/threads.cc
+++ b/threads.cc
@@ -87,6 +87,7 @@ Thread::Thread(thrd_t *t, void (*func)(), void *a) {
 	state = THREAD_CREATED;
 	id = model->get_next_id();
 	*user_thread = id;
+	parent = thread_current();
 }
 
 Thread::~Thread()
diff --git a/threads.h b/threads.h
index 38eac0a..345f420 100644
--- a/threads.h
+++ b/threads.h
@@ -31,8 +31,10 @@ public:
 	void set_state(thread_state s) { state = s; }
 	thread_id_t get_id();
 	thrd_t get_thrd_t() { return *user_thread; }
+	Thread * get_parent() { return parent; }
 private:
 	int create_context();
+	Thread *parent;
 
 	void (*start_routine)();
 	void *arg;
-- 
2.34.1