posix: upgrade libevent from 1.4.7 to 1.4.13

third_party/libevent/devpoll.c

 /*
  * Copyright 2000-2004 Niels Provos <provos@citi.umich.edu>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 15 matching lines @@
  */
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 #include <sys/types.h>
 #include <sys/resource.h>
 #ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #else
-#include <sys/_time.h>
+#include <sys/_libevent_time.h>
 #endif
 #include <sys/queue.h>
 #include <sys/devpoll.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
@@ skipping 21 matching lines @@
         struct pollfd *changes;
         int nchanges;
 };
 
 static void *devpoll_init       (struct event_base *);
 static int devpoll_add  (void *, struct event *);
 static int devpoll_del  (void *, struct event *);
 static int devpoll_dispatch     (struct event_base *, void *, struct timeval *);
 static void devpoll_dealloc     (struct event_base *, void *);
 
-struct eventop devpollops = {
+const struct eventop devpollops = {
         "devpoll",
         devpoll_init,
         devpoll_add,
         devpoll_del,
         devpoll_dispatch,
         devpoll_dealloc,
         1 /* need reinit */
 };
 
 #define NEVENT  32000
@@ skipping 35 matching lines @@
 }
 
 static void *
 devpoll_init(struct event_base *base)
 {
         int dpfd, nfiles = NEVENT;
         struct rlimit rl;
         struct devpollop *devpollop;
 
         /* Disable devpoll when this environment variable is set */
-        if (getenv("EVENT_NODEVPOLL"))
+        if (evutil_getenv("EVENT_NODEVPOLL"))
                 return (NULL);
 
         if (!(devpollop = calloc(1, sizeof(struct devpollop))))
                 return (NULL);
 
         if (getrlimit(RLIMIT_NOFILE, &rl) == 0 &&
             rl.rlim_cur != RLIM_INFINITY)
                 nfiles = rl.rlim_cur;
 
         /* Initialize the kernel queue */
@@ skipping 263 matching lines @@
         if (devpollop->events)
                 free(devpollop->events);
         if (devpollop->changes)
                 free(devpollop->changes);
         if (devpollop->dpfd >= 0)
                 close(devpollop->dpfd);
 
         memset(devpollop, 0, sizeof(struct devpollop));
         free(devpollop);
 }