A new API "androidGetThreadPriority"

Change-Id: I6baeead8c70460863343fd557250635fb1e6a170
diff --git a/include/utils/threads.h b/include/utils/threads.h
index c685625..ab3e8cd 100644
--- a/include/utils/threads.h
+++ b/include/utils/threads.h
@@ -143,6 +143,10 @@
 // in either case errno is set.  Thread ID zero means current thread.
 extern int androidSetThreadPriority(pid_t tid, int prio);
 
+// Get the current priority of a particular thread. Returns one of the
+// ANDROID_PRIORITY constants or a negative result in case of error.
+extern int androidGetThreadPriority(pid_t tid);
+
 // Get the current scheduling group of a particular thread. Normally returns
 // one of the ANDROID_TGROUP constants other than ANDROID_TGROUP_DEFAULT.
 // Returns ANDROID_TGROUP_DEFAULT if no pthread support (e.g. on host) or if