add --enable-timerfd-wrapper to wrap timefd syscalls for platforms with the…

add --enable-timerfd-wrapper to wrap timefd syscalls for platforms with the right kernel and wrong libc

src/include/timerfd_wrap.h

+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005-2011, Anthony Minessale II <anthm@freeswitch.org>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ *
+ * The Initial Developer of the Original Code is
+ * Anthony Minessale II <anthm@freeswitch.org>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * 
+ * Anthony Minessale II <anthm@freeswitch.org>
+ *
+ * timerfd_wrap.h -- timerfd syscall wrapper
+ *
+ */
+/*! \file timerfd_wrap.h
+    \brief timerfd syscall wrapper
+*/
+
+#ifndef TIMERFD_WRAP_H
+#define TIMERFD_WRAP_H
+SWITCH_BEGIN_EXTERN_C
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/signal.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <poll.h>
+#include <fcntl.h>
+#include <time.h>
+#include <errno.h>
+
+
+#ifndef __NR_timerfd
+#if defined(__x86_64__)
+#define __NR_timerfd_create 283
+#define __NR_timerfd_settime 286
+#define __NR_timerfd_gettime 287
+#elif defined(__i386__)
+#define __NR_timerfd_create 322
+#define __NR_timerfd_settime 325
+#define __NR_timerfd_gettime 326
+#else
+#error invalid system
+#endif
+#endif
+
+#define TFD_TIMER_ABSTIME (1 << 0)
+
+int timerfd_create(int clockid, int flags) 
+{
+
+	return syscall(__NR_timerfd_create, clockid, flags);
+}
+
+int timerfd_settime(int ufc, int flags, const struct itimerspec *utmr, struct itimerspec *otmr) 
+{
+
+	return syscall(__NR_timerfd_settime, ufc, flags, utmr, otmr);
+}
+
+int timerfd_gettime(int ufc, struct itimerspec *otmr) 
+{
+
+	return syscall(__NR_timerfd_gettime, ufc, otmr);
+}
+
+SWITCH_END_EXTERN_C
+
+#endif

src/switch_time.c

@@ -38,6 +38,11 @@
 #include <sys/timerfd.h>
 #endif
 
+#ifdef TIMERFD_WRAP
+#include <timerfd_wrap.h>
+#define HAVE_TIMERFD_CREATE
+#endif
+
 //#if defined(DARWIN)
 #define DISABLE_1MS_COND
 //#endif