From b7cb624be9f0a59198e1a5f44cdee0a215440d27 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Wed, 18 Sep 2002 07:33:20 +0000
Subject: Update.

2002-09-18  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/clone.S: Add support for SETTLS and
	SETTID/CLEARTID.

	* signal/allocrtsig.c: Move to...
	* sysdeps/generic/allocrtsig.c: ...here.  New file.
---
 sysdeps/generic/allocrtsig.c | 94 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 sysdeps/generic/allocrtsig.c

(limited to 'sysdeps/generic')

diff --git a/sysdeps/generic/allocrtsig.c b/sysdeps/generic/allocrtsig.c
new file mode 100644
index 0000000000..fdf8a6854a
--- /dev/null
+++ b/sysdeps/generic/allocrtsig.c
@@ -0,0 +1,94 @@
+/* Handle real-time signal allocation.
+   Copyright (C) 1997,98,99,2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <signal.h>
+
+/* In these variables we keep track of the used variables.  If the
+   platform does not support any real-time signals we will define the
+   values to some unreasonable value which will signal failing of all
+   the functions below.  */
+#ifndef __SIGRTMIN
+static int current_rtmin = -1;
+static int current_rtmax = -1;
+#else
+static int current_rtmin;
+static int current_rtmax;
+
+static int initialized;
+
+#include "testrtsig.h"
+
+static void
+init (void)
+{
+  if (!kernel_has_rtsig ())
+    {
+      current_rtmin = -1;
+      current_rtmax = -1;
+    }
+  else
+    {
+      current_rtmin = __SIGRTMIN;
+      current_rtmax = __SIGRTMAX;
+    }
+  initialized = 1;
+}
+#endif
+
+/* Return number of available real-time signal with highest priority.  */
+int
+__libc_current_sigrtmin (void)
+{
+#ifdef __SIGRTMIN
+  if (!initialized)
+    init ();
+#endif
+  return current_rtmin;
+}
+
+/* Return number of available real-time signal with lowest priority.  */
+int
+__libc_current_sigrtmax (void)
+{
+#ifdef __SIGRTMIN
+  if (!initialized)
+    init ();
+#endif
+  return current_rtmax;
+}
+
+/* Allocate real-time signal with highest/lowest available
+   priority.  Please note that we don't use a lock since we assume
+   this function to be called at program start.  */
+int
+__libc_allocate_rtsig (int high)
+{
+#ifndef __SIGRTMIN
+  return -1;
+#else
+  if (!initialized)
+    init ();
+  if (current_rtmin == -1 || current_rtmin > current_rtmax)
+    /* We don't have anymore signal available.  */
+    return -1;
+
+  return high ? current_rtmin++ : current_rtmax--;
+#endif
+}
-- 
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