# 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_FORK_ENABLE
+# define EV_FORK_ENABLE 1
+#endif
+
+#ifndef EV_EMBED_ENABLE
+# define EV_EMBED_ENABLE 1
+#endif
+
+/*****************************************************************************/
+
+#include <stddef.h> /* for size_t */
+
+#if EV_STAT_ENABLE
+# include <sys/stat.h>
#endif
/* support multiple event loops? */
# define EV_P_ EV_P,
# define EV_A loop
# define EV_A_ EV_A,
-# define EV_DEFAULT_A ev_default_loop (0)
-# define EV_DEFAULT_A_ EV_DEFAULT_A,
+# define EV_DEFAULT ev_default_loop (0)
+# define EV_DEFAULT_ EV_DEFAULT,
#else
# define EV_P void
# define EV_P_
# define EV_A
# define EV_A_
-# define EV_DEFAULT_A
-# define EV_DEFAULT_A_
+# define EV_DEFAULT
+# define EV_DEFAULT_
+
+# 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_CHILD 0x00000800L /* child/pid had status change */
+#define EV_STAT 0x00001000L /* stat data changed */
+#define EV_IDLE 0x00002000L /* event loop is idling */
+#define EV_PREPARE 0x00004000L /* event loop about to poll */
+#define EV_CHECK 0x00008000L /* event loop finished poll */
+#define EV_EMBED 0x00010000L /* embedded event loop needs sweep */
+#define EV_FORK 0x00020000L /* event loop resumed in child */
+#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
EV_WATCHER_TIME (ev_watcher_time)
} ev_watcher_time;
+/* invoked when fd is either EV_READable or EV_WRITEable */
+/* revent EV_READ, EV_WRITE */
+typedef struct ev_io
+{
+ EV_WATCHER_LIST (ev_io)
+
+ int fd; /* ro */
+ int events; /* ro */
+} ev_io;
+
/* invoked after a specific time, repeatable (based on monotonic clock) */
/* revent EV_TIMEOUT */
typedef struct ev_timer
ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
} ev_periodic;
-/* invoked when fd is either EV_READable or EV_WRITEable */
-/* revent EV_READ, EV_WRITE */
-typedef struct ev_io
-{
- EV_WATCHER_LIST (ev_io)
-
- int fd; /* ro */
- int events; /* ro */
-} ev_io;
-
/* invoked when the given signal has been received */
/* revent EV_SIGNAL */
typedef struct ev_signal
int signum; /* ro */
} ev_signal;
+/* invoked when sigchld is received and waitpid indicates the given pid */
+/* revent EV_CHILD */
+/* does not support priorities */
+typedef struct ev_child
+{
+ EV_WATCHER_LIST (ev_child)
+
+ int pid; /* ro */
+ int rpid; /* rw, holds the received pid */
+ int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
+} ev_child;
+
+#if EV_STAT_ENABLE
+/* st_nlink = 0 means missing file or other error */
+#ifdef _WIN32
+typedef struct _stati64 ev_statdata;
+#else
+typedef struct stat ev_statdata;
+#endif
+
+/* 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; /* ro */
+ const char *path; /* ro */
+ ev_statdata prev; /* ro */
+ ev_statdata attr; /* ro */
+} ev_stat;
+#endif
+
/* invoked when the nothing else needs to be done, keeps the process from blocking */
/* revent EV_IDLE */
typedef struct ev_idle
EV_WATCHER (ev_check)
} ev_check;
-/* invoked when sigchld is received and waitpid indicates the given pid */
-/* revent EV_CHILD */
-/* does not support priorities */
-typedef struct ev_child
+#if EV_FORK_ENABLE
+/* the callback gets invoked before check in the child process when a fork was detected */
+typedef struct ev_fork
{
- EV_WATCHER_LIST (ev_child)
-
- int pid; /* ro */
- int rpid; /* rw, holds the received pid */
- int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
-} ev_child;
+ EV_WATCHER (ev_fork)
+} ev_fork;
+#endif
-#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
struct ev_io io;
struct ev_timer timer;
struct ev_periodic periodic;
+ struct ev_signal signal;
+ struct ev_child child;
+#if EV_STAT_ENABLE
+ struct ev_stat stat;
+#endif
struct ev_idle idle;
struct ev_prepare prepare;
struct ev_check check;
- struct ev_signal signal;
- struct ev_child child;
-#if EV_MULTIPLICITY
+#if EV_FORK_ENABLE
+ struct ev_fork fork;
+#endif
+#if EV_EMBED_ENABLE
struct ev_embed embed;
#endif
};
* or take some potentially destructive action.
* The default is your system realloc function.
*/
-void ev_set_allocator (void *(*cb)(void *ptr, long size));
+void ev_set_allocator (void *(*cb)(void *ptr, size_t size));
/* set the callback function to call on a
* retryable syscall error
#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_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_); } 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_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0)
+#define ev_fork_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)
#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_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } 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_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_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0)
+#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } 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);
#endif
+/* only supported in the default loop */
+void ev_signal_start (EV_P_ ev_signal *w);
+void ev_signal_stop (EV_P_ ev_signal *w);
+
+/* only supported in the default loop */
+void ev_child_start (EV_P_ ev_child *w);
+void ev_child_stop (EV_P_ ev_child *w);
+
+# 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
+
void ev_idle_start (EV_P_ ev_idle *w);
void ev_idle_stop (EV_P_ ev_idle *w);
void ev_check_start (EV_P_ ev_check *w);
void ev_check_stop (EV_P_ ev_check *w);
-/* only supported in the default loop */
-void ev_signal_start (EV_P_ ev_signal *w);
-void ev_signal_stop (EV_P_ ev_signal *w);
-
-/* only supported in the default loop */
-void ev_child_start (EV_P_ ev_child *w);
-void ev_child_stop (EV_P_ ev_child *w);
+# if EV_FORK_ENABLE
+void ev_fork_start (EV_P_ ev_fork *w);
+void ev_fork_stop (EV_P_ ev_fork *w);
+# endif
-# 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);
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