[libjava PATCH] Conditionalize use of thread priority scheduling

[Jason R Thorpe]

Thread priority scheduling is an option in POSIX.  The canonical way
to test for this feature is to include <unistd.h> and test for the
_POSIX_THREAD_PRIORITY_SCHEDULING macro.  The libstdc++-v3 testsuite
already does this, in fact.

This fixes building libjava on i386-unknown-netbsdelf2.0 (threads
enabled).  OK for mainline and 3.3 branch?

	* posix-threads.cc: Include <unistd.h> if HAVE_UNISTD_H is defined.
	(_Jv_ThreadSetPriority): Test for _POSIX_THREAD_PRIORITY_SCHEDULING.

-- 
        -- Jason R. Thorpe <thorpej@wasabisystems.com>
-------------- next part --------------
Index: posix-threads.cc
===================================================================
RCS file: /cvs/gcc/gcc/libjava/posix-threads.cc,v
retrieving revision 1.32
diff -c -r1.32 posix-threads.cc
*** posix-threads.cc	21 Mar 2002 00:26:44 -0000	1.32
--- posix-threads.cc	27 Feb 2003 23:58:14 -0000
***************
*** 24,29 ****
--- 24,32 ----
  #include <signal.h>
  #include <errno.h>
  #include <limits.h>
+ #ifdef HAVE_UNISTD_H
+ #include <unistd.h>	// To test for _POSIX_THREAD_PRIORITY_SCHEDULING
+ #endif
  
  #include <gcj/cni.h>
  #include <jvm.h>
***************
*** 318,323 ****
--- 321,327 ----
  void
  _Jv_ThreadSetPriority (_Jv_Thread_t *data, jint prio)
  {
+ #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
    if (data->flags & FLAG_START)
      {
        struct sched_param param;
***************
*** 325,330 ****
--- 329,335 ----
        param.sched_priority = prio;
        pthread_setschedparam (data->thread, SCHED_RR, &param);
      }
+ #endif
  }
  
  void