Introduce a non-portable function pthread_getthreadid_np(3) to retrieve

calling thread's unique integral ID, which is similar to AIX function of
the same name.  Bump __FreeBSD_version to note its introduction.

Reviewed by:	kib

2 files changed, 49 insertions, 0 deletions

diff --git a/lib/libthr/thread/Makefile.inc b/lib/libthr/thread/Makefile.inc
index 6d571d4bd39d..ddde6e9180c2 100644
--- a/lib/libthr/thread/Makefile.inc
+++ b/lib/libthr/thread/Makefile.inc
@@ -22,6 +22,7 @@ SRCS+= \
 	thr_getprio.c \
 	thr_getcpuclockid.c \
 	thr_getschedparam.c \
+	thr_getthreadid_np.c \
 	thr_info.c \
 	thr_init.c \
 	thr_join.c \
diff --git a/lib/libthr/thread/thr_getthreadid_np.c b/lib/libthr/thread/thr_getthreadid_np.c
new file mode 100644
index 000000000000..f963a56e7ff6
--- /dev/null
+++ b/lib/libthr/thread/thr_getthreadid_np.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2011 Jung-uk Kim <jkim@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "namespace.h"
+#include <pthread.h>
+#include <pthread_np.h>
+#include "un-namespace.h"
+
+#include "thr_private.h"
+
+__weak_reference(_pthread_getthreadid_np, pthread_getthreadid_np);
+
+/*
+ * Provide the equivelant to AIX pthread_getthreadid_np() function.
+ */
+int
+_pthread_getthreadid_np(void)
+{
+	struct pthread *curthread;
+
+	_thr_check_init();
+	curthread = _get_curthread();
+	return (TID(curthread));
+}