diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index d33591262c3..e7e4ae61a16 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,10 @@
+2003-01-07  Tom Tromey  <tromey@redhat.com>
+
+	* include/posix.h (_Jv_platform_usleep): Wrap in ifdef
+	JV_HASH_SYNCHRONIZATION.
+	* include/win32.h (_Jv_platform_usleep): Wrap in ifdef
+	JV_HASH_SYNCHRONIZATION.
+
 2003-01-07  Michael Koch  <konqueror@gmx.de>
  
  	* java/net/DatagramSocket.java:
diff --git a/libjava/include/posix.h b/libjava/include/posix.h
index 859db6e6ba1..0e1220a10b3 100644
--- a/libjava/include/posix.h
+++ b/libjava/include/posix.h
@@ -1,6 +1,6 @@
 // posix.h -- Helper functions for POSIX-flavored OSs.
 
-/* Copyright (C) 2000, 2002  Free Software Foundation
+/* Copyright (C) 2000, 2002, 2003  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -60,11 +60,13 @@ _Jv_platform_close_on_exec (jint fd)
   ::fcntl (fd, F_SETFD, FD_CLOEXEC);
 }
 
+#ifdef JV_HASH_SYNCHRONIZATION
 inline void
 _Jv_platform_usleep (unsigned long usecs)
 {
   usleep (usecs);
 }
+#endif /* JV_HASH_SYNCHRONIZATION */
 
 #ifndef DISABLE_JAVA_NET
 
diff --git a/libjava/include/win32.h b/libjava/include/win32.h
index 8ba6ef2053c..5de8211a9a9 100644
--- a/libjava/include/win32.h
+++ b/libjava/include/win32.h
@@ -48,6 +48,7 @@ _Jv_platform_close_on_exec (jint)
   // Ignore.
 }
 
+#ifdef JV_HASH_SYNCHRONIZATION
 /* Suspends the execution of the current thread for the specified
    number of microseconds.  Tries to emulate the behaviour of usleep()
    on UNIX and provides a granularity of 1 millisecond.  */
@@ -60,6 +61,7 @@ _Jv_platform_usleep (unsigned long usecs)
       Sleep (millis);
     }
 }
+#endif /* JV_HASH_SYNCHRONIZATION */
 
 #ifndef DISABLE_JAVA_NET