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

5 files changed, 53 insertions, 0 deletions

diff --git a/lib/libc/include/namespace.h b/lib/libc/include/namespace.h
index 6ba8bab..1e00030 100644
--- a/lib/libc/include/namespace.h
+++ b/lib/libc/include/namespace.h
@@ -137,6 +137,7 @@
 #define		pthread_getprio			_pthread_getprio
 #define		pthread_getschedparam		_pthread_getschedparam
 #define		pthread_getspecific		_pthread_getspecific
+#define		pthread_getthreadid_np		_pthread_getthreadid_np
 #define		pthread_join			_pthread_join
 #define		pthread_key_create		_pthread_key_create
 #define		pthread_key_delete		_pthread_key_delete
diff --git a/lib/libc/include/un-namespace.h b/lib/libc/include/un-namespace.h
index 00f0df2..9c9ce97 100644
--- a/lib/libc/include/un-namespace.h
+++ b/lib/libc/include/un-namespace.h
@@ -118,6 +118,7 @@
 #undef		pthread_getprio
 #undef		pthread_getschedparam
 #undef		pthread_getspecific
+#undef		pthread_getthreadid_np
 #undef		pthread_join
 #undef		pthread_key_create
 #undef		pthread_key_delete
diff --git a/lib/libthr/pthread.map b/lib/libthr/pthread.map
index 9f82a1b..355edea 100644
--- a/lib/libthr/pthread.map
+++ b/lib/libthr/pthread.map
@@ -272,6 +272,7 @@ FBSDprivate_1.0 {
 	_pthread_getprio;
 	_pthread_getschedparam;
 	_pthread_getspecific;
+	_pthread_getthreadid_np;
 	_pthread_join;
 	_pthread_key_create;
 	_pthread_key_delete;
@@ -403,6 +404,7 @@ FBSD_1.1 {
 
 FBSD_1.2 {
 	openat;
+	pthread_getthreadid_np;
 	setcontext;
 	swapcontext;
 };
diff --git a/lib/libthr/thread/Makefile.inc b/lib/libthr/thread/Makefile.inc
index 6d571d4..ddde6e9 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 0000000..f963a56
--- /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));
+}