avoid backend_modify call unless ev_io_set was used

[software/libev.git] / ev.h

diff --git a/ev.h b/ev.h
index ad9bb8eca11ddd890219f8775b1f6bae2f1319a3..635463c77e17a7a08e0523fbdfef656c4b227cc8 100644 (file)
--- a/ev.h
+++ b/ev.h
@@ -56,6 +56,10 @@ typedef double ev_tstamp;
 # define EV_STAT_ENABLE 1
 #endif
 
+#ifndef EV_IDLE_ENABLE
+# define EV_IDLE_ENABLE 1
+#endif
+
 #ifndef EV_FORK_ENABLE
 # define EV_FORK_ENABLE 1
 #endif
@@ -95,6 +99,7 @@ struct ev_loop;
 #define EV_NONE           0x00L /* no events */
 #define EV_READ           0x01L /* ev_io detected read will not block */
 #define EV_WRITE          0x02L /* ev_io detected write will not block */
+#define EV_IOFDSET        0x80L /* internal use only */
 #define EV_TIMEOUT  0x00000100L /* timer timed out */
 #define EV_PERIODIC 0x00000200L /* periodic timer timed out */
 #define EV_SIGNAL   0x00000400L /* signal was received */
@@ -115,8 +120,8 @@ struct ev_loop;
 # define EV_PROTOTYPES 1
 #endif
 
-#define EV_VERSION_MAJOR 1
-#define EV_VERSION_MINOR 1
+#define EV_VERSION_MAJOR 2
+#define EV_VERSION_MINOR 0
 
 #ifndef EV_CB_DECLARE
 # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
@@ -191,6 +196,7 @@ typedef struct ev_periodic
 {
   EV_WATCHER_TIME (ev_periodic)
 
+  ev_tstamp offset; /* rw */
   ev_tstamp interval; /* rw */
   ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
 } ev_periodic;
@@ -240,12 +246,14 @@ typedef struct ev_stat
 } ev_stat;
 #endif
 
+#if EV_IDLE_ENABLE
 /* invoked when the nothing else needs to be done, keeps the process from blocking */
 /* revent EV_IDLE */
 typedef struct ev_idle
 {
   EV_WATCHER (ev_idle)
 } ev_idle;
+#endif
 
 /* invoked for each run of the mainloop, just before the blocking call */
 /* you can still change events in any way you like */
@@ -296,7 +304,9 @@ union ev_any_watcher
 #if EV_STAT_ENABLE
   struct ev_stat stat;
 #endif
+#if EV_IDLE_ENABLE
   struct ev_idle idle;
+#endif
   struct ev_prepare prepare;
   struct ev_check check;
 #if EV_FORK_ENABLE
@@ -388,6 +398,7 @@ void ev_default_destroy (void); /* destroy the default loop */
 void ev_default_fork (void);
 
 unsigned int ev_backend (EV_P);
+unsigned int ev_loop_count (EV_P);
 #endif
 
 #define EVLOOP_NONBLOCK        1 /* do not block/wait */
@@ -415,16 +426,16 @@ void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revent
 
 /* these may evaluate ev multiple times, and the other arguments at most once */
 /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
-#define ev_init(ev,cb_) do {                           \
+#define ev_init(ev,cb_) do {                   \
   ((ev_watcher *)(void *)(ev))->active   =     \
   ((ev_watcher *)(void *)(ev))->pending  =     \
   ((ev_watcher *)(void *)(ev))->priority = 0;  \
-  ev_set_cb ((ev), cb_);                                       \
+  ev_set_cb ((ev), cb_);                       \
 } while (0)
 
-#define ev_io_set(ev,fd_,events_)           do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)
+#define ev_io_set(ev,fd_,events_)           do { (ev)->fd = (fd_); (ev)->events = (events_) | EV_IOFDSET; } while (0)
 #define ev_timer_set(ev,after_,repeat_)     do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
-#define ev_periodic_set(ev,at_,ival_,res_)  do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)
+#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)
 #define ev_signal_set(ev,signum_)           do { (ev)->signum = (signum_); } while (0)
 #define ev_child_set(ev,pid_)               do { (ev)->pid = (pid_); } while (0)
 #define ev_stat_set(ev,path_,interval_)     do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
@@ -449,9 +460,9 @@ void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revent
 #define ev_is_pending(ev)                   (0 + ((ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
 #define ev_is_active(ev)                    (0 + ((ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
 
-#define ev_priority(ev)                     ((ev_watcher *)(void *)(ev))->priority /* rw */
+#define ev_priority(ev)                     ((((ev_watcher *)(void *)(ev))->priority) + 0)
 #define ev_cb(ev)                           (ev)->cb /* rw */
-#define ev_set_priority(ev,pri)             ev_priority (ev) = (pri)
+#define ev_set_priority(ev,pri)             ((ev_watcher *)(void *)(ev))->priority = (pri)
 
 #ifndef ev_set_cb
 # define ev_set_cb(ev,cb_)                  ev_cb (ev) = (cb_)
@@ -466,6 +477,8 @@ void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revent
 void ev_feed_event     (EV_P_ void *w, int revents);
 void ev_feed_fd_event  (EV_P_ int fd, int revents);
 void ev_feed_signal_event (EV_P_ int signum);
+void ev_invoke         (EV_P_ void *w, int revents);
+int  ev_clear_pending  (EV_P_ void *w);
 
 void ev_io_start       (EV_P_ ev_io *w);
 void ev_io_stop        (EV_P_ ev_io *w);
@@ -495,8 +508,10 @@ void ev_stat_stop      (EV_P_ ev_stat *w);
 void ev_stat_stat      (EV_P_ ev_stat *w);
 # endif
 
+# if EV_IDLE_ENABLE
 void ev_idle_start     (EV_P_ ev_idle *w);
 void ev_idle_stop      (EV_P_ ev_idle *w);
+# endif
 
 void ev_prepare_start  (EV_P_ ev_prepare *w);
 void ev_prepare_stop   (EV_P_ ev_prepare *w);