libthreads: Remove

libthreads is most probably completely broken, and not the long-term
road anyway.

* config.make.in (VERSIONING): Remove.
* configure.ac: Test for pfinet assembly compatibility instead of
libthreads assembly compatibility. Do not set VERSIONING.
* libthreads: Remove directory.
* Makefile (lib-subdirs): Remove libthreads.
* doc/hurd.texi (Threads Library): Rename references to libthreads into
libpthread.
* release/rfloppy.copy: Do not objcopy lib/libthreads.so.
* release/tool-Makefile (rfloppy-solib): Remove libthreads.

1 files changed, 0 insertions, 116 deletions

diff --git a/libthreads/cancel-cond.c b/libthreads/cancel-cond.c
deleted file mode 100644
index 3aa33f6a..00000000
--- a/libthreads/cancel-cond.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* Modified condition_wait that checks for cancellation.
-   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If
-   not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-   Cambridge, MA 02139, USA.  */
-
-#include <hurd/signal.h>
-#include <cthreads.h>
-#include "cthread_internals.h"
-#include <assert-backtrace.h>
-
-/* Just like condition_wait, but cancellable.  Returns true if cancelled.  */
-int
-hurd_condition_wait (condition_t c, mutex_t m)
-{
-  /* This function will be called by hurd_thread_cancel while we are blocked
-     in the condition_wait.  We wake up all threads blocked on C,
-     so our thread will wake up and notice the cancellation flag.  */
-  void cancel_me (void)
-    {
-      condition_broadcast (c);
-    }
-  struct hurd_sigstate *ss = _hurd_self_sigstate ();
-  cproc_t p = cproc_self ();
-  int cancel;
-
-  assert_backtrace (ss->intr_port == MACH_PORT_NULL); /* Sanity check for signal bugs. */
-
-  p->state = CPROC_CONDWAIT | CPROC_SWITCHING;
-
-  /* Atomically enqueue our cproc on the condition variable's queue of
-     waiters, and mark our sigstate to indicate that `cancel_me' must be
-     called to wake us up.  We must hold the sigstate lock while acquiring
-     the condition variable's lock and tweaking it, so that
-     hurd_thread_cancel can never suspend us and then deadlock in
-     condition_broadcast waiting for the condition variable's lock.  */
-
-  spin_lock (&ss->lock);
-  spin_lock (&c->lock);
-  cancel = ss->cancel;
-  if (cancel)
-    /* We were cancelled before doing anything.  Don't block at all.  */
-    ss->cancel = 0;
-  else
-    {
-      /* Put us on the queue so that condition_broadcast will know to wake
-         us up.  */
-      cthread_queue_enq (&c->queue, p);
-      /* Tell hurd_thread_cancel how to unblock us.  */
-      ss->cancel_hook = &cancel_me;
-    }
-  spin_unlock (&c->lock);
-  spin_unlock (&ss->lock);
-
-  if (cancel)
-    {
-      /* Cancelled on entry.  Just leave the mutex locked.  */
-      m = NULL;
-      p->state = CPROC_RUNNING;
-    }
-  else
-    {
-      /* Now unlock the mutex and block until woken.  */
-
-#ifdef	WAIT_DEBUG
-      p->waiting_for = (char *)c;
-#endif	 /* WAIT_DEBUG */
-
-      mutex_unlock (m);
-
-      spin_lock (&p->lock);
-      if (p->state & CPROC_SWITCHING)
-	cproc_block ();
-      else
-	{
-	  /* We were woken up someplace before reacquiring P->lock.
-	     We can just continue on.  */
-	  p->state = CPROC_RUNNING;
-	  spin_unlock(&p->lock);
-	}
-
-#ifdef	WAIT_DEBUG
-      p->waiting_for = (char *)0;
-#endif	 /* WAIT_DEBUG */
-    }
-
-  spin_lock (&ss->lock);
-  /* Clear the hook, now that we are done blocking.  */
-  ss->cancel_hook = NULL;
-  /* Check the cancellation flag; we might have unblocked due to
-     cancellation rather than a normal condition_signal or
-     condition_broadcast (or we might have just happened to get cancelled
-     right after waking up).  */
-  cancel |= ss->cancel;
-  ss->cancel = 0;
-  spin_unlock (&ss->lock);
-
-  if (m)
-    /* Reacquire the mutex and return.  */
-    mutex_lock (m);
-
-  return cancel;
-}