[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libc/signal/allocrtsig.c b/ap/build/uClibc/libc/signal/allocrtsig.c
new file mode 100644
index 0000000..3c7d621
--- /dev/null
+++ b/ap/build/uClibc/libc/signal/allocrtsig.c
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+/* Handle real-time signal allocation.
+ Copyright (C) 1997, 1998, 1999 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 <features.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+/* Only enable rt signals when it is supported at compile time */
+#ifndef __NR_rt_sigaction
+/* 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. */
+static int current_rtmin = -1;
+static int current_rtmax = -1;
+#else
+# ifdef __UCLIBC_HAS_THREADS_NATIVE__
+static int current_rtmin = __SIGRTMIN + 2;
+# else
+static int current_rtmin = __SIGRTMIN;
+# endif
+static int current_rtmax = __SIGRTMAX;
+#endif
+
+/* Return number of available real-time signal with highest priority. */
+int __libc_current_sigrtmin (void)
+{
+ return current_rtmin;
+}
+
+/* Return number of available real-time signal with lowest priority. */
+int __libc_current_sigrtmax (void)
+{
+ 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);
+int __libc_allocate_rtsig (int high)
+{
+ if (current_rtmin == -1 || current_rtmin > current_rtmax)
+ /* We don't have anymore signal available. */
+ return -1;
+
+ return high ? current_rtmin++ : current_rtmax--;
+}