cmake, thread: OpenBSD support (#773)

* build brt.c on OpenBSD

* include <sys/types.h> to properly detect kqueue() on OpenBSD

per http://man.openbsd.org/kqueue.2, otherwise kqueue() detection fails

* use the proper pthread_set_name_np() on OpenBSD

CMakeLists.txt

@@ -586,6 +586,10 @@ elseif(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
   list(APPEND SRCS
     src/net/bsd/brt.c
   )
+elseif(${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
+  list(APPEND SRCS
+    src/net/bsd/brt.c
+  )
 elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   list(APPEND SRCS
     src/net/linux/rt.c

cmake/re-config.cmake

@@ -73,7 +73,7 @@ if(UNIX)
   if(HAVE_EPOLL)
     list(APPEND RE_DEFINITIONS -DHAVE_EPOLL)
   endif()
-  check_symbol_exists(kqueue "sys/event.h" HAVE_KQUEUE)
+  check_symbol_exists(kqueue "sys/types.h;sys/event.h" HAVE_KQUEUE)
   if(HAVE_KQUEUE)
     list(APPEND RE_DEFINITIONS -DHAVE_KQUEUE)
   endif()

src/thread/thread.c

@@ -14,6 +14,9 @@
 #endif
 #ifdef HAVE_PTHREAD
 #include <pthread.h>
+#ifdef OPENBSD
+#include <pthread_np.h>
+#endif
 #endif
 
 
@@ -74,7 +77,11 @@ static int handler(void *p)
 #elif defined(DARWIN)
 	(void)pthread_setname_np(th.name);
 #elif defined(HAVE_PTHREAD)
+#if defined(OPENBSD)
+	(void)pthread_set_name_np(*th.thr, th.name);
+#else
 	(void)pthread_setname_np(*th.thr, th.name);
+#endif
 #endif
 
 	return th.func(th.arg);