From 8e68eb1dcd984e046e6fd674f9db1ac60ebec4b0 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Wed, 22 Oct 2008 19:12:33 +0000
Subject: [PATCH] is_alive()

---
 panda/src/event/asyncTask.I | 25 +++++++++++++++++++++++++
 panda/src/event/asyncTask.h |  1 +
 2 files changed, 26 insertions(+)

diff --git a/panda/src/event/asyncTask.I b/panda/src/event/asyncTask.I
index 53bdafe9fe..38e80a4f14 100644
--- a/panda/src/event/asyncTask.I
+++ b/panda/src/event/asyncTask.I
@@ -23,6 +23,31 @@ get_state() const {
   return _state;
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: AsyncTask::is_alive
+//       Access: Published
+//  Description: Returns true if the task is currently active or
+//               sleeping on some task chain, meaning that it will be
+//               executed in its turn, or false if it is not active.
+//               If the task has recently been removed while it is in
+//               the middle of execution, this will return false,
+//               because the task will not run again once it finishes.
+////////////////////////////////////////////////////////////////////
+INLINE bool AsyncTask::
+is_alive() const {
+  switch (_state) {
+  case S_active:
+  case S_servicing:
+  case S_sleeping:
+  case S_active_nested:
+    return true;
+
+  case S_inactive:
+  case S_servicing_removed:
+    return false;
+  }
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: AsyncTask::get_manager
 //       Access: Published
diff --git a/panda/src/event/asyncTask.h b/panda/src/event/asyncTask.h
index 4c310e3c6f..9d881001dc 100644
--- a/panda/src/event/asyncTask.h
+++ b/panda/src/event/asyncTask.h
@@ -69,6 +69,7 @@ PUBLISHED:
   };
 
   INLINE State get_state() const;
+  INLINE bool is_alive() const;
   INLINE AsyncTaskManager *get_manager() const;
 
   void remove();