Check for sched implementation (for netbsdelf)

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/libobjc/trunk@17055 72102866-910b-0410-8b05-ffd578937521

ChangeLog.GNUstep

@@ -1,3 +1,12 @@
+2003-06-27  Adam Fedor  <fedor@gnu.org>
+
+	* thr-posix.c: Add sched_param struct if missing
+	(__objc_thread_set_priority): Check for implementation
+	of priority scheduling.
+	* GNUmakefile (ADDITIONAL_CPPFLAGS): Mark sched_param as missing
+	on netbsdelf. (Rewritten from bug submited by Peter Cooper 
+	<comrade@obverse.com.au>.
+
 2003-05-20  Adam Fedor  <fedor@gnu.org>
 
 	* GNUmakefile (VERSION): 1.3.0

GNUmakefile

@@ -48,6 +48,9 @@ CLIBRARY_NAME = libobjc
 
 # dce, decosf1, irix, mach, os2, posix, pthreads, single, solaris, vxworks
 THREADING = posix
+ifeq ($(GNUSTEP_TARGET_OS),netbsdelf)
+ADDITIONAL_CPPFLAGS += -DMISSING_SCHED_PARAM_STRUCT
+endif
 ifeq ($(GNUSTEP_TARGET_OS),mingw32)
 THREADING = win32
 endif

thr-posix.c

@@ -30,6 +30,12 @@ Boston, MA 02111-1307, USA.  */
 #include "runtime.h"
 #include <pthread.h>
 
+#ifdef MISSING_SCHED_PARAM_STRUCT
+struct sched_param {
+  int sched_priority;
+};
+#endif
+
 /* Key structure for maintaining thread specific storage */
 static pthread_key_t _objc_thread_storage;
 static pthread_attr_t _objc_thread_attribs;
@@ -96,6 +102,7 @@ __objc_thread_detach(void (*func)(void *arg), void *arg)
 int
 __objc_thread_set_priority(int priority)
 {
+#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
   pthread_t thread_id = pthread_self();
   int policy;
   struct sched_param params;
@@ -123,6 +130,8 @@ __objc_thread_set_priority(int priority)
       if (pthread_setschedparam(thread_id, policy, &params) == 0)
         return 0;
     }
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+
   return -1;
 }