[ViewVC] Diff of: cvs/libev/ev.pod

Comparing libev/ev.pod (file contents):
Revision 1.177 by root, Mon Sep 8 17:27:42 2008 UTC vs.
Revision 1.178 by root, Sat Sep 13 18:25:50 2008 UTC

    {
      struct ev_io io;
      int otherfd;
      void *somedata;
      struct whatever *mostinteresting;
-   }
+   };
+   ...
+   struct my_io w;
+   ev_io_init (&w.io, my_cb, fd, EV_READ);
 And since your callback will be called with a pointer to the watcher, you
 can cast it back to your own type:
    static void my_cb (struct ev_loop *loop, struct ev_io *w_, int revents)
    }
 More interesting and less C-conformant ways of casting your callback type
 instead have been omitted.
-Another common scenario is having some data structure with multiple
+Another common scenario is to use some data structure with multiple
-watchers:
+embedded watchers:
    struct my_biggy
    {
      int some_data;
      ev_timer t1;
      ev_timer t2;
    }
-In this case getting the pointer to C<my_biggy> is a bit more complicated,
+In this case getting the pointer to C<my_biggy> is a bit more
-you need to use C<offsetof>:
+complicated: Either you store the address of your C<my_biggy> struct
+in the C<data> member of the watcher, or you need to use some pointer
+arithmetic using C<offsetof> inside your watchers:
    #include <stddef.h>
    static void
    t1_cb (EV_P_ struct ev_timer *w, int revents)

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