1 files changed, 78 insertions, 0 deletions
diff --git a/REORG.TODO/signal/allocrtsig.c b/REORG.TODO/signal/allocrtsig.c
new file mode 100644
index 0000000000..d2a4687d68
--- /dev/null
+++ b/REORG.TODO/signal/allocrtsig.c
@@ -0,0 +1,78 @@
+/* Handle real-time signal allocation.  Generic version.
+   Copyright (C) 1997-2017 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <signal.h>
+
+/* Another sysdeps file can #define this and then #include this file.  */
+#ifndef RESERVED_SIGRT
+# define RESERVED_SIGRT 0
+#endif
+
+/* 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.  */
+#ifdef __SIGRTMIN
+static int current_rtmin = __SIGRTMIN + RESERVED_SIGRT;
+static int current_rtmax = __SIGRTMAX;
+#endif
+
+/* Return number of available real-time signal with highest priority.  */
+int
+__libc_current_sigrtmin (void)
+{
+#ifdef __SIGRTMIN
+  return current_rtmin;
+#else
+  return -1;
+#endif
+}
+libc_hidden_def (__libc_current_sigrtmin)
+strong_alias (__libc_current_sigrtmin, __libc_current_sigrtmin_private)
+
+/* Return number of available real-time signal with lowest priority.  */
+int
+__libc_current_sigrtmax (void)
+{
+#ifdef __SIGRTMIN
+  return current_rtmax;
+#else
+  return -1;
+#endif
+}
+libc_hidden_def (__libc_current_sigrtmax)
+strong_alias (__libc_current_sigrtmax, __libc_current_sigrtmax_private)
+
+/* 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 (current_rtmin == -1 || current_rtmin > current_rtmax)
+    /* We don't have any more signals available.  */
+    return -1;
+
+  return high ? current_rtmin++ : current_rtmax--;
+#endif
+}
+strong_alias (__libc_allocate_rtsig, __libc_allocate_rtsig_private)