X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/22b2a449105d7604f715c1afafeb4fe5ac473f1b..f0e9f4e4e09ba9877ac4d15fefde761cc96cd317:/ev.h

diff --git a/ev.h b/ev.h
index 1b33bf2..126de49 100644
--- a/ev.h
+++ b/ev.h
@@ -27,8 +27,8 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef EV_H
-#define EV_H
+#ifndef EV_H__
+#define EV_H__
 
 #ifdef __cplusplus
 extern "C" {
@@ -87,6 +87,13 @@ struct ev_loop;
 #define EV_VERSION_MAJOR 1
 #define EV_VERSION_MINOR 1
 
+#ifndef EV_CB_DECLARE
+# define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents);
+#endif
+#ifndef EV_CB_INVOKE
+# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
+#endif
+
 /*
  * struct member types:
  * private: you can look at them, but not change them, and they might not mean anything to you.
@@ -100,7 +107,7 @@ struct ev_loop;
   int pending; /* private */			\
   int priority; /* private */			\
   EV_COMMON; /* rw */				\
-  void (*cb)(EV_P_ struct type *, int revents); /* private */ /* gets invoked with an eventmask */
+  EV_CB_DECLARE (type) /* private */
 
 #define EV_WATCHER_LIST(type)			\
   EV_WATCHER (type);				\
@@ -111,17 +118,20 @@ struct ev_loop;
   ev_tstamp at     /* private */
 
 /* base class, nothing to see here unless you subclass */
-struct ev_watcher {
+struct ev_watcher
+{
   EV_WATCHER (ev_watcher);
 };
 
 /* base class, nothing to see here unless you subclass */
-struct ev_watcher_list {
+struct ev_watcher_list
+{
   EV_WATCHER_LIST (ev_watcher_list);
 };
 
 /* base class, nothing to see here unless you subclass */
-struct ev_watcher_time {
+struct ev_watcher_time
+{
   EV_WATCHER_TIME (ev_watcher_time);
 };
 
@@ -141,6 +151,7 @@ struct ev_periodic
   EV_WATCHER_TIME (ev_periodic);
 
   ev_tstamp interval; /* rw */
+  ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
 };
 
 /* invoked when fd is either EV_READable or EV_WRITEable */
@@ -158,9 +169,6 @@ struct ev_io
 struct ev_signal
 {
   EV_WATCHER_LIST (ev_signal);
-#if EV_MULTIPLICITY
-  struct ev_loop *loop;
-#endif
 
   int signum; /* ro */
 };
@@ -199,6 +207,22 @@ struct ev_child
   int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
 };
 
+/* the presence of this union forces similar struct layout */
+union ev_any_watcher
+{
+  struct ev_watcher w;
+  struct ev_watcher_list wl;
+
+  struct ev_io io;
+  struct ev_timer timer;
+  struct ev_periodic periodic;
+  struct ev_idle idle;
+  struct ev_prepare prepare;
+  struct ev_check check;
+  struct ev_signal signal;
+  struct ev_child child;
+};
+
 #define EVMETHOD_AUTO     0 /* consults environment */
 #define EVMETHOD_SELECT   1
 #define EVMETHOD_POLL     2
@@ -215,6 +239,20 @@ int ev_version_minor (void);
 
 ev_tstamp ev_time (void);
 
+/* Sets the allocation function to use, works like realloc.
+ * It is used to allocate and free memory.
+ * If it returns zero when memory needs to be allocated, the library might abort
+ * or take some potentially destructive action.
+ * The default is your system realloc function.
+ */
+void ev_set_allocator (void *(*cb)(void *ptr, long size));
+
+/* set the callback function to call on a
+ * retryable syscall error
+ * (such as failed select, poll, epoll_wait)
+ */
+void ev_set_syserr_cb (void (*cb)(const char *msg));
+
 # if EV_MULTIPLICITY
 /* the default loop is the only one that handles signals and child watchers */
 /* you can call this as often as you like */
@@ -263,43 +301,53 @@ void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revent
 #endif
 
 /* these may evaluate ev multiple times, and the other arguments at most once */
-/* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
-#define ev_watcher_init(ev,cb_) do {		\
-  ((struct ev_watcher *)(ev))->active   =	\
-  ((struct ev_watcher *)(ev))->pending  =	\
-  ((struct ev_watcher *)(ev))->priority = 0;	\
-  (ev)->cb = (cb_);				\
+/* 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 {				\
+  ((struct ev_watcher *)(void *)(ev))->active   =	\
+  ((struct ev_watcher *)(void *)(ev))->pending  =	\
+  ((struct ev_watcher *)(void *)(ev))->priority = 0;	\
+  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_timer_set(ev,after_,repeat_)     do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
-#define ev_periodic_set(ev,at_,interval_)   do { (ev)->at = (at_); (ev)->interval = (interval_); } 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_signal_set(ev,signum_)           do { (ev)->signum = (signum_); } while (0)
 #define ev_idle_set(ev)                     /* nop, yes, this is a serious in-joke */
 #define ev_prepare_set(ev)                  /* nop, yes, this is a serious in-joke */
 #define ev_check_set(ev)                    /* nop, yes, this is a serious in-joke */
 #define ev_child_set(ev,pid_)               do { (ev)->pid = (pid_); } while (0)
 
-#define ev_io_init(ev,cb,fd,events)         do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
-#define ev_timer_init(ev,cb,after,repeat)   do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
-#define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0)
-#define ev_signal_init(ev,cb,signum)        do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
-#define ev_idle_init(ev,cb)                 do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
-#define ev_prepare_init(ev,cb)              do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
-#define ev_check_init(ev,cb)                do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
-#define ev_child_init(ev,cb,pid)            do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
+#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)
+#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)
+#define ev_signal_init(ev,cb,signum)        do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
+#define ev_idle_init(ev,cb)                 do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
+#define ev_prepare_init(ev,cb)              do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
+#define ev_check_init(ev,cb)                do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
+#define ev_child_init(ev,cb,pid)            do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
 
-#define ev_is_pending(ev)                   (0 + ((struct ev_watcher *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
-#define ev_is_active(ev)                    (0 + ((struct ev_watcher *)(ev))->active) /* ro, true when the watcher has been started */
+#define ev_is_pending(ev)                   (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
+#define ev_is_active(ev)                    (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
 
-#define ev_priority(ev)                     ((struct ev_watcher *)(ev))->priority /* rw */
+#define ev_priority(ev)                     ((struct ev_watcher *)(void *)(ev))->priority /* rw */
 #define ev_cb(ev)                           (ev)->cb /* rw */
 #define ev_set_priority(ev,pri)             ev_priority (ev) = (pri)
-#define ev_set_cb(ev,cb_)                   ev_cb (ev) = (cb_)
+
+#ifndef ev_set_cb
+# define ev_set_cb(ev,cb_)                  ev_cb (ev) = (cb_)
+#endif
 
 /* stopping (enabling, adding) a watcher does nothing if it is already running */
 /* stopping (disabling, deleting) a watcher does nothing unless its already running */
 #if EV_PROTOTYPES
+
+/* feeds an event into a watcher as if the event actually occured */
+/* accepts any ev_watcher type */
+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_io_start       (EV_P_ struct ev_io *w);
 void ev_io_stop        (EV_P_ struct ev_io *w);
 
@@ -310,6 +358,7 @@ void ev_timer_again    (EV_P_ struct ev_timer *w);
 
 void ev_periodic_start (EV_P_ struct ev_periodic *w);
 void ev_periodic_stop  (EV_P_ struct ev_periodic *w);
+void ev_periodic_again (EV_P_ struct ev_periodic *w);
 
 void ev_idle_start     (EV_P_ struct ev_idle *w);
 void ev_idle_stop      (EV_P_ struct ev_idle *w);