*** empty log message ***

Changes

@@ -3,6 +3,7 @@ Revision history for libev, a high-performance and full-featured event loop.
 TODO: ABI??? API????? Changes???
 TODO: include ev_xyz_start in each example?
 TODO: section watcher states/lifetime
+TODO: ALL ev_xxx_set funtions must be called from ev++ set methods, somehow.
 	- "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
 	- ev_embed_stop did not correctly stop the watcher (very good
           testcase by Vladimir Timofeev).
@@ -14,6 +15,9 @@ TODO: section watcher states/lifetime
           seems the former is *much* faster than the latter.
         - reduce the number of spurious wake-ups with the ports backend.
         - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
+        - do async init within ev_async_start, not ev_async_set, which avoids
+          an API quirk where the set function must be called in the C++ API
+          even when there is nothing to set.
         - add (undocumented) EV_ENABLE when adding events with kqueue,
           this might help with OS X, which seems to need it despite documenting
           not to need it (helpfully pointed out by Tilghman Lesher).

ev++.h

@@ -415,6 +415,7 @@ namespace ev {
     #if EV_MULTIPLICITY
       EV_PX;
 
+      // loop set
       void set (EV_P) throw ()
       {
         this->EV_A = EV_A;
@@ -783,8 +784,6 @@ namespace ev {
 
   #if EV_ASYNC_ENABLE
   EV_BEGIN_WATCHER (async, async)
-    void set () throw () { }
-
     void send () throw ()
     {
       ev_async_send (EV_A_ static_cast<ev_async *>(this));

ev.c

@@ -3579,6 +3579,8 @@ ev_async_start (EV_P_ ev_async *w)
   if (expect_false (ev_is_active (w)))
     return;
 
+  w->sent = 0;
+
   evpipe_init (EV_A);
 
   EV_FREQUENT_CHECK;

ev.h

@@ -642,7 +642,7 @@ void ev_resume  (EV_P);
 #define ev_check_set(ev)                     /* nop, yes, this is a serious in-joke */
 #define ev_embed_set(ev,other_)              do { (ev)->other = (other_); } while (0)
 #define ev_fork_set(ev)                      /* nop, yes, this is a serious in-joke */
-#define ev_async_set(ev)                     do { (ev)->sent = 0; } while (0)
+#define ev_async_set(ev)                     /* nop, yes, this is a serious in-joke */
 
 #define ev_io_init(ev,cb,fd,events)          do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
 #define ev_timer_init(ev,cb,after,repeat)    do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)

ev.pod

@@ -3393,16 +3393,22 @@ do this when the watcher is inactive (and not pending either).
 
 =item w->set ([arguments])
 
-Basically the same as C<ev_TYPE_set>, with the same arguments. Must be
-called at least once. Unlike the C counterpart, an active watcher gets
-automatically stopped and restarted when reconfiguring it with this
-method.
+Basically the same as C<ev_TYPE_set>, with the same arguments. Either this
+method or a suitable start method must be called at least once. Unlike the
+C counterpart, an active watcher gets automatically stopped and restarted
+when reconfiguring it with this method.
 
 =item w->start ()
 
 Starts the watcher. Note that there is no C<loop> argument, as the
 constructor already stores the event loop.
 
+=item w->start ([arguments])
+
+Instead of calling C<set> and C<start> methods separately, it is often
+convenient to wrap them in one call. Uses the same type of arguments as
+the configure C<set> method of the watcher.
+
 =item w->stop ()
 
 Stops the watcher if it is active. Again, no C<loop> argument.
@@ -3424,20 +3430,25 @@ Invokes C<ev_stat_stat>.
 
 =back
 
-Example: Define a class with an IO and idle watcher, start one of them in
-the constructor.
+Example: Define a class with two I/O and idle watchers, start the I/O
+watchers in the constructor.
 
    class myclass
    {
      ev::io   io  ; void io_cb   (ev::io   &w, int revents);
+     ev::io2  io2 ; void io2_cb  (ev::io   &w, int revents);
      ev::idle idle; void idle_cb (ev::idle &w, int revents);
 
      myclass (int fd)
      {
        io  .set <myclass, &myclass::io_cb  > (this);
+       io2 .set <myclass, &myclass::io2_cb > (this);
        idle.set <myclass, &myclass::idle_cb> (this);
 
-       io.start (fd, ev::READ);
+       io.set (fd, ev::WRITE); // configure the watcher
+       io.start ();            // start it whenever convenient
+
+       io2.start (fd, ev::READ); // set + start in one call
      }
    };