save and restore errno in signal handler

[software/libev.git] / ev_epoll.c

diff --git a/ev_epoll.c b/ev_epoll.c
index f0a96786d8614baad109f69059e38ffe23e34c0a..a7918aff9a74fe7b091f0b18ccb2d4f14032cb51 100644 (file)
--- a/ev_epoll.c
+++ b/ev_epoll.c
@@ -1,4 +1,6 @@
 /*
 /*

+ * libev epoll fd activity backend
+ *

  * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
  * All rights reserved.
  *
  * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
  * All rights reserved.
  *


@@ -37,7 +39,7 @@ epoll_modify (int fd, int oev, int nev)
   int mode = nev ? oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD : EPOLL_CTL_DEL;
 
   struct epoll_event ev;
   int mode = nev ? oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD : EPOLL_CTL_DEL;
 
   struct epoll_event ev;

-  ev.data.fd = fd;
+  ev.data.u64 = fd; /* use u64 to fully initialise the struct, for nicer strace etc. */

   ev.events =
       (nev & EV_READ ? EPOLLIN : 0)
       | (nev & EV_WRITE ? EPOLLOUT : 0);
   ev.events =
       (nev & EV_READ ? EPOLLIN : 0)
       | (nev & EV_WRITE ? EPOLLOUT : 0);


@@ -73,16 +75,16 @@ epoll_poll (ev_tstamp timeout)
 
   for (i = 0; i < eventcnt; ++i)
     fd_event (
 
   for (i = 0; i < eventcnt; ++i)
     fd_event (

-      events [i].data.fd,
+      events [i].data.u64,

       (events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0)
       | (events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0)
     );
 
   /* if the receive array was full, increase its size */
       (events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0)
       | (events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0)
     );
 
   /* if the receive array was full, increase its size */

-  if (eventcnt == eventmax)
+  if (expect_false (eventcnt == eventmax))

     {
       free (events);
     {
       free (events);

-      eventmax += eventmax >> 1;
+      eventmax = array_roundsize (events, eventmax << 1);

       events = malloc (sizeof (struct epoll_event) * eventmax);
     }
 }
       events = malloc (sizeof (struct epoll_event) * eventmax);
     }
 }