ntdll: Fetch thread id on NetBSD.

configure

@@ -5857,6 +5857,7 @@ for ac_header in \
 	linux/serial.h \
 	linux/types.h \
 	linux/ucdrom.h \
+	lwp.h \
 	mach-o/nlist.h \
 	mach-o/loader.h \
 	mach/mach.h \

configure.ac

@@ -452,6 +452,7 @@ AC_CHECK_HEADERS(\
 	linux/serial.h \
 	linux/types.h \
 	linux/ucdrom.h \
+	lwp.h \
 	mach-o/nlist.h \
 	mach-o/loader.h \
 	mach/mach.h \

dlls/ntdll/server.c

@@ -28,6 +28,9 @@
 #endif
 #include <errno.h>
 #include <fcntl.h>
+#ifdef HAVE_LWP_H
+#include <lwp.h>
+#endif
 #ifdef HAVE_PTHREAD_NP_H
 # include <pthread_np.h>
 #endif
@@ -956,6 +959,8 @@ static int get_unix_tid(void)
 #elif defined(__APPLE__)
     ret = mach_thread_self();
     mach_port_deallocate(mach_task_self(), ret);
+#elif defined(__NetBSD__)
+    ret = _lwp_self();
 #elif defined(__FreeBSD__)
     long lwpid;
     thr_self( &lwpid );

include/config.h.in

@@ -440,6 +440,9 @@
 /* Define to 1 if you have the `lstat' function. */
 #undef HAVE_LSTAT
 
+/* Define to 1 if you have the <lwp.h> header file. */
+#undef HAVE_LWP_H
+
 /* Define to 1 if you have the <machine/cpu.h> header file. */
 #undef HAVE_MACHINE_CPU_H