# define EV_MULTIPLICITY 1
#endif
-#ifndef EV_PERIODICS
-# define EV_PERIODICS 1
+#ifndef EV_PERIODIC_ENABLE
+# define EV_PERIODIC_ENABLE 1
+#endif
+
+#ifndef EV_STAT_ENABLE
+# define EV_STAT_ENABLE 1
+#endif
+
+#ifndef EV_EMBED_ENABLE
+# define EV_EMBED_ENABLE 1
+#endif
+
+/*****************************************************************************/
+
+#if EV_STAT_ENABLE
+# include <sys/stat.h>
#endif
/* support multiple event loops? */
# define EV_A_
# define EV_DEFAULT_A
# define EV_DEFAULT_A_
+
+# undef EV_EMBED_ENABLE
#endif
/* eventmask, revents, events... */
-#define EV_UNDEF -1L /* guaranteed to be invalid */
-#define EV_NONE 0x00L
-#define EV_READ 0x01L /* io only */
-#define EV_WRITE 0x02L /* io only */
-#define EV_TIMEOUT 0x000100L /* timer only */
-#define EV_PERIODIC 0x000200L /* periodic timer only */
-#define EV_SIGNAL 0x000400L /* signal only */
-#define EV_IDLE 0x000800L /* idle only */
-#define EV_CHECK 0x001000L /* check only */
-#define EV_PREPARE 0x002000L /* prepare only */
-#define EV_CHILD 0x004000L /* child/pid only */
-#define EV_EMBED 0x008000L /* embedded event loop */
-#define EV_ERROR 0x800000L /* sent when an error occurs */
+#define EV_UNDEF -1L /* guaranteed to be invalid */
+#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_TIMEOUT 0x00000100L /* timer timed out */
+#define EV_PERIODIC 0x00000200L /* periodic timer timed out */
+#define EV_SIGNAL 0x00000400L /* signal was received */
+#define EV_IDLE 0x00000800L /* event loop is idling */
+#define EV_PREPARE 0x00001000L /* event loop about to poll */
+#define EV_CHECK 0x00002000L /* event loop finished poll */
+#define EV_CHILD 0x00004000L /* child/pid had status change */
+#define EV_EMBED 0x00008000L /* embedded event loop needs sweep */
+#define EV_STAT 0x00010000L /* stat data changed */
+#define EV_ERROR 0x80000000L /* sent when an error occurs */
/* can be used to add custom fields to all watchers, while losing binary compatibility */
#ifndef EV_COMMON
int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
} ev_child;
-#if EV_MULTIPLICITY
+#if EV_EMBED_ENABLE
/* used to embed an event loop inside another */
/* the callback gets invoked when the event loop has handled events, and can be 0 */
typedef struct ev_embed
} ev_embed;
#endif
+#if EV_STAT_ENABLE
+/* st_nlink = 0 means missing file or other error */
+typedef struct stat ev_statdata;
+
+/* invoked each time the stat data changes for a given path */
+/* revent EV_STAT */
+typedef struct ev_stat
+{
+ EV_WATCHER (ev_stat)
+
+ ev_timer timer; /* private */
+ ev_tstamp interval; /* rw */
+ const char *path; /* ro */
+ ev_statdata prev; /* ro */
+ ev_statdata attr; /* ro */
+} ev_stat;
+#endif
+
/* the presence of this union forces similar struct layout */
union ev_any_watcher
{
struct ev_check check;
struct ev_signal signal;
struct ev_child child;
-#if EV_MULTIPLICITY
+#if EV_EMBED_ENABLE
struct ev_embed embed;
#endif
+#if EV_STAT_ENABLE
+ struct ev_stat stat;
+#endif
};
/* bits for ev_default_loop and ev_loop_new */
#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_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0)
+#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); } 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_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_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0)
+#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_path_set ((ev),(path),(interval)); } while (0)
#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 */
/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
void ev_timer_again (EV_P_ ev_timer *w);
-#if EV_PERIODICS
+#if EV_PERIODIC_ENABLE
void ev_periodic_start (EV_P_ ev_periodic *w);
void ev_periodic_stop (EV_P_ ev_periodic *w);
void ev_periodic_again (EV_P_ ev_periodic *w);
void ev_child_start (EV_P_ ev_child *w);
void ev_child_stop (EV_P_ ev_child *w);
-# if EV_MULTIPLICITY
+# if EV_EMBED_ENABLE
/* only supported when loop to be embedded is in fact embeddable */
void ev_embed_start (EV_P_ ev_embed *w);
void ev_embed_stop (EV_P_ ev_embed *w);
-void ev_embed_loop (EV_P_ ev_embed *w);
+void ev_embed_sweep (EV_P_ ev_embed *w);
+# endif
+
+# if EV_STAT_ENABLE
+void ev_stat_start (EV_P_ ev_stat *w);
+void ev_stat_stop (EV_P_ ev_stat *w);
+void ev_stat_stat (EV_P_ ev_stat *w);
# endif
#endif
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