runtime: New lock/note implementation.

From-SVN: r181633

1 files changed, 0 insertions, 74 deletions

diff --git a/libgo/runtime/go-note.c b/libgo/runtime/go-note.c
deleted file mode 100644
index 62c229f..0000000
--- a/libgo/runtime/go-note.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/* go-note.c -- implement notesleep, notewakeup and noteclear.
-
-   Copyright 2009 The Go Authors. All rights reserved.
-   Use of this source code is governed by a BSD-style
-   license that can be found in the LICENSE file.  */
-
-/* A note is a one-time notification.  noteclear clears the note.
-   notesleep waits for a call to notewakeup.  notewakeup wakes up
-   every thread waiting on the note.  */
-
-#include "go-assert.h"
-#include "runtime.h"
-
-/* We use a single global lock and condition variable.  It would be
-   better to use a futex on GNU/Linux.  */
-
-static pthread_mutex_t note_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t note_cond = PTHREAD_COND_INITIALIZER;
-
-/* noteclear is called before any calls to notesleep or
-   notewakeup.  */
-
-void
-runtime_noteclear (Note* n)
-{
-  int32 i;
-
-  i = pthread_mutex_lock (&note_lock);
-  __go_assert (i == 0);
-
-  n->woken = 0;
-
-  i = pthread_mutex_unlock (&note_lock);
-  __go_assert (i == 0);
-}
-
-/* Wait until notewakeup is called.  */
-
-void
-runtime_notesleep (Note* n)
-{
-  int32 i;
-
-  i = pthread_mutex_lock (&note_lock);
-  __go_assert (i == 0);
-
-  while (!n->woken)
-    {
-      i = pthread_cond_wait (&note_cond, &note_lock);
-      __go_assert (i == 0);
-    }
-
-  i = pthread_mutex_unlock (&note_lock);
-  __go_assert (i == 0);
-}
-
-/* Wake up every thread sleeping on the note.  */
-
-void
-runtime_notewakeup (Note *n)
-{
-  int32 i;
-
-  i = pthread_mutex_lock (&note_lock);
-  __go_assert (i == 0);
-
-  n->woken = 1;
-
-  i = pthread_cond_broadcast (&note_cond);
-  __go_assert (i == 0);
-
-  i = pthread_mutex_unlock (&note_lock);
-  __go_assert (i == 0);
-}