freebsd上kqueue也不能用了？

logicBaby

在看libev代码时发现这么一段：

1. unsigned int
   
2. ev_supported_backends (void)
   
3. {
   
4.   unsigned int flags = 0;
   
5. 
   
6.   if (EV_USE_PORT  ) flags |= EVBACKEND_PORT;
   
7.   if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
   
8.   if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
   
9.   if (EV_USE_POLL  ) flags |= EVBACKEND_POLL;
   
10.   if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
    
11.   
    
12.   return flags;
    
13. }
    
14. 
    
15. [color=Red]unsigned int
    
16. ev_recommended_backends (void)
    
17. {
    
18.   unsigned int flags = ev_supported_backends ();
    
19. 
    
20. #ifndef __NetBSD__
    
21.   /* kqueue is borked on everything but netbsd apparently */
    
22.   /* it usually doesn't work correctly on anything but sockets and pipes */
    
23.   flags &= ~EVBACKEND_KQUEUE;
    
24. #endif
    
25. #ifdef __APPLE__
    
26.   /* only select works correctly on that "unix-certified" platform */
    
27.   flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
    
28.   flags &= ~EVBACKEND_POLL;   /* poll is based on kqueue from 10.5 onwards */
    
29. #endif
    
30. #ifdef __FreeBSD__
    
31.   flags &= ~EVBACKEND_POLL;   /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
    
32. #endif
    
33. 
    
34.   return flags;
    
35. }[/color]
    

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这样的话，在FreeBSD上就只能用select做backend ?

delphij

ports/devel/libev/files/patch-ev.c

1. --- ./ev.c.orig        2011-02-09 00:17:37.000000000 +0100
   
2. +++ ./ev.c        2011-08-19 17:01:35.000000000 +0200
   
3. @@ -1591,10 +1591,12 @@
   
4.    unsigned int flags = ev_supported_backends ();
   
5. 
   
6. #ifndef __NetBSD__
   
7. +#ifndef __FreeBSD__
   
8.    /* kqueue is borked on everything but netbsd apparently */
   
9.    /* it usually doesn't work correctly on anything but sockets and pipes */
   
10.    flags &= ~EVBACKEND_KQUEUE;
    
11. #endif
    
12. +#endif
    
13. #ifdef __APPLE__
    
14.    /* only select works correctly on that "unix-certified" platform */
    
15.    flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */

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logicBaby

  原来有patch，多谢老大~