From 0957bb7d29fc1db36c083643a55e563482f86f94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dag-Erling=20Sm=C3=B8rgrav?= <des@FreeBSD.org>
Date: Wed, 6 Feb 2008 20:44:29 +0000
Subject: [PATCH] Add pthread_mutex_isowned_np() here as well; libthr and
 libkse are supposed to have identical functionality.

MFC after:	2 weeks
---
 lib/libkse/kse.map            |  5 +++++
 lib/libkse/thread/thr_mutex.c | 10 ++++++++++
 2 files changed, 15 insertions(+)

diff --git a/lib/libkse/kse.map b/lib/libkse/kse.map
index 94f6dd958188..a6eed6980e67 100644
--- a/lib/libkse/kse.map
+++ b/lib/libkse/kse.map
@@ -256,6 +256,7 @@ FBSDprivate_1.0 {
 	_pthread_mutex_getprioceiling;
 	_pthread_mutex_init;
 	_pthread_mutex_init_calloc_cb;
+	_pthread_mutex_isowned_np;
 	_pthread_mutex_lock;
 	_pthread_mutex_setprioceiling;
 	_pthread_mutex_timedlock;
@@ -360,3 +361,7 @@ FBSDprivate_1.0 {
 	_thread_state_running;
 	_thread_state_zoombie;
 };
+
+FBSD_1.1 {
+	pthread_mutex_isowned_np;
+};
diff --git a/lib/libkse/thread/thr_mutex.c b/lib/libkse/thread/thr_mutex.c
index f6b0e245c332..a2a7ed5d381c 100644
--- a/lib/libkse/thread/thr_mutex.c
+++ b/lib/libkse/thread/thr_mutex.c
@@ -110,6 +110,7 @@ __weak_reference(__pthread_mutex_trylock, pthread_mutex_trylock);
 /* No difference between libc and application usage of these: */
 __weak_reference(_pthread_mutex_destroy, pthread_mutex_destroy);
 __weak_reference(_pthread_mutex_unlock, pthread_mutex_unlock);
+__weak_reference(_pthread_mutex_isowned_np, pthread_mutex_isowned_np);
 
 static int
 thr_mutex_init(pthread_mutex_t *mutex,
@@ -1849,3 +1850,12 @@ mutex_queue_enq(pthread_mutex_t mutex, pthread_t pthread)
 	}
 	pthread->sflags |= THR_FLAGS_IN_SYNCQ;
 }
+
+int
+_pthread_mutex_isowned_np(pthread_mutex_t *mutex)
+{
+	struct pthread	*curthread = _get_curthread();
+
+	return ((*mutex)->m_owner == curthread);
+}
+