X-Git-Url: https://git.llucax.com/software/libev.git/blobdiff_plain/6724cd5b6ffe05187a5520b0cd3771c7dbe83896..7b056e46cb219eb2438c0b9ea152875be997b6c0:/ev.c?ds=inline

diff --git a/ev.c b/ev.c
index 77e8011..4812c40 100644
--- a/ev.c
+++ b/ev.c
@@ -28,27 +28,36 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef EV_STANDALONE
 # include "config.h"
 
 # if HAVE_CLOCK_GETTIME
-#  define EV_USE_MONOTONIC 1
-#  define EV_USE_REALTIME  1
+#  ifndef EV_USE_MONOTONIC
+#   define EV_USE_MONOTONIC 1
+#  endif
+#  ifndef EV_USE_REALTIME
+#   define EV_USE_REALTIME  1
+#  endif
 # endif
 
-# if HAVE_SELECT && HAVE_SYS_SELECT_H
+# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
 #  define EV_USE_SELECT 1
 # endif
 
-# if HAVE_POLL && HAVE_POLL_H
+# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
 #  define EV_USE_POLL 1
 # endif
 
-# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
+# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
 #  define EV_USE_EPOLL 1
 # endif
 
-# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
+# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
 #  define EV_USE_KQUEUE 1
 # endif
 
@@ -154,7 +163,9 @@ typedef struct ev_watcher_time *WT;
 
 static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
 
-#include "ev_win32.c"
+#ifdef WIN32
+# include "ev_win32.c"
+#endif
 
 /*****************************************************************************/
 
@@ -223,6 +234,8 @@ typedef struct
 
   struct ev_loop
   {
+    ev_tstamp ev_rt_now;
+    #define ev_rt_now ((loop)->ev_rt_now)
     #define VAR(name,decl) decl;
       #include "ev_vars.h"
     #undef VAR
@@ -234,6 +247,7 @@ typedef struct
 
 #else
 
+  ev_tstamp ev_rt_now;
   #define VAR(name,decl) static decl;
     #include "ev_vars.h"
   #undef VAR
@@ -244,7 +258,7 @@ typedef struct
 
 /*****************************************************************************/
 
-inline ev_tstamp
+ev_tstamp
 ev_time (void)
 {
 #if EV_USE_REALTIME
@@ -523,15 +537,10 @@ downheap (WT *heap, int N, int k)
 }
 
 inline void
-adjustheap (WT *heap, int N, int k, ev_tstamp at)
+adjustheap (WT *heap, int N, int k)
 {
-  ev_tstamp old_at = heap [k]->at;
-  heap [k]->at = at;
-
-  if (old_at < at)
-    downheap (heap, N, k);
-  else
-    upheap (heap, k);
+  upheap (heap, k);
+  downheap (heap, N, k);
 }
 
 /*****************************************************************************/
@@ -799,7 +808,9 @@ loop_destroy (EV_P)
   /* have to use the microsoft-never-gets-it-right macro */
   array_free_microshit (fdchange);
   array_free_microshit (timer);
+#if EV_PERIODICS
   array_free_microshit (periodic);
+#endif
   array_free_microshit (idle);
   array_free_microshit (prepare);
   array_free_microshit (check);
@@ -982,7 +993,11 @@ timers_reify (EV_P)
       if (w->repeat)
         {
           assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
-          ((WT)w)->at = mn_now + w->repeat;
+
+          ((WT)w)->at += w->repeat;
+          if (((WT)w)->at < mn_now)
+            ((WT)w)->at = mn_now;
+
           downheap ((WT *)timers, timercnt, 0);
         }
       else
@@ -992,6 +1007,7 @@ timers_reify (EV_P)
     }
 }
 
+#if EV_PERIODICS
 static void
 periodics_reify (EV_P)
 {
@@ -1042,6 +1058,7 @@ periodics_reschedule (EV_P)
   for (i = periodiccnt >> 1; i--; )
     downheap ((WT *)periodics, periodiccnt, i);
 }
+#endif
 
 inline int
 time_update_monotonic (EV_P)
@@ -1085,7 +1102,9 @@ time_update (EV_P)
               now_floor = mn_now;
             }
 
+# if EV_PERIODICS
           periodics_reschedule (EV_A);
+# endif
           /* no timer adjustment, as the monotonic clock doesn't jump */
           /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
         }
@@ -1097,7 +1116,9 @@ time_update (EV_P)
 
       if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
         {
+#if EV_PERIODICS
           periodics_reschedule (EV_A);
+#endif
 
           /* adjust timers. this is easy, as the offset is the same for all */
           for (i = 0; i < timercnt; ++i)
@@ -1170,11 +1191,13 @@ ev_loop (EV_P_ int flags)
               if (block > to) block = to;
             }
 
+#if EV_PERIODICS
           if (periodiccnt)
             {
               ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
               if (block > to) block = to;
             }
+#endif
 
           if (block < 0.) block = 0.;
         }
@@ -1186,7 +1209,9 @@ ev_loop (EV_P_ int flags)
 
       /* queue pending timers and reschedule them */
       timers_reify (EV_A); /* relative timers called last */
+#if EV_PERIODICS
       periodics_reify (EV_A); /* absolute timers called first */
+#endif
 
       /* queue idle watchers unless io or timers are pending */
       if (idlecnt && !any_pending (EV_A))
@@ -1287,6 +1312,8 @@ ev_io_stop (EV_P_ struct ev_io *w)
   if (!ev_is_active (w))
     return;
 
+  assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
+
   wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
   ev_stop (EV_A_ (W)w);
 
@@ -1323,10 +1350,10 @@ ev_timer_stop (EV_P_ struct ev_timer *w)
   if (((W)w)->active < timercnt--)
     {
       timers [((W)w)->active - 1] = timers [timercnt];
-      downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
+      adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
     }
 
-  ((WT)w)->at = w->repeat;
+  ((WT)w)->at -= mn_now;
 
   ev_stop (EV_A_ (W)w);
 }
@@ -1337,7 +1364,10 @@ ev_timer_again (EV_P_ struct ev_timer *w)
   if (ev_is_active (w))
     {
       if (w->repeat)
-        adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
+        {
+          ((WT)w)->at = mn_now + w->repeat;
+          adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
+        }
       else
         ev_timer_stop (EV_A_ w);
     }
@@ -1345,6 +1375,7 @@ ev_timer_again (EV_P_ struct ev_timer *w)
     ev_timer_start (EV_A_ w);
 }
 
+#if EV_PERIODICS
 void
 ev_periodic_start (EV_P_ struct ev_periodic *w)
 {
@@ -1380,7 +1411,7 @@ ev_periodic_stop (EV_P_ struct ev_periodic *w)
   if (((W)w)->active < periodiccnt--)
     {
       periodics [((W)w)->active - 1] = periodics [periodiccnt];
-      downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
+      adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
     }
 
   ev_stop (EV_A_ (W)w);
@@ -1393,6 +1424,7 @@ ev_periodic_again (EV_P_ struct ev_periodic *w)
   ev_periodic_stop (EV_A_ w);
   ev_periodic_start (EV_A_ w);
 }
+#endif
 
 void
 ev_idle_start (EV_P_ struct ev_idle *w)
@@ -1409,7 +1441,7 @@ void
 ev_idle_stop (EV_P_ struct ev_idle *w)
 {
   ev_clear_pending (EV_A_ (W)w);
-  if (ev_is_active (w))
+  if (!ev_is_active (w))
     return;
 
   idles [((W)w)->active - 1] = idles [--idlecnt];
@@ -1431,7 +1463,7 @@ void
 ev_prepare_stop (EV_P_ struct ev_prepare *w)
 {
   ev_clear_pending (EV_A_ (W)w);
-  if (ev_is_active (w))
+  if (!ev_is_active (w))
     return;
 
   prepares [((W)w)->active - 1] = prepares [--preparecnt];
@@ -1453,7 +1485,7 @@ void
 ev_check_stop (EV_P_ struct ev_check *w)
 {
   ev_clear_pending (EV_A_ (W)w);
-  if (ev_is_active (w))
+  if (!ev_is_active (w))
     return;
 
   checks [((W)w)->active - 1] = checks [--checkcnt];
@@ -1524,7 +1556,7 @@ void
 ev_child_stop (EV_P_ struct ev_child *w)
 {
   ev_clear_pending (EV_A_ (W)w);
-  if (ev_is_active (w))
+  if (!ev_is_active (w))
     return;
 
   wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
@@ -1594,3 +1626,7 @@ ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, vo
     }
 }
 
+#ifdef __cplusplus
+}
+#endif
+