Browse Source

implement primitive hook management

master
Marc Alexander Lehmann 13 years ago
parent
commit
998e0b3ead
2 changed files with 51 additions and 1 deletions
  1. +44
    -1
      ev.c
  2. +7
    -0
      ev.h

+ 44
- 1
ev.c View File

@ -42,6 +42,8 @@ static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
static void (*method_modify)(int fd, int oev, int nev);
static void (*method_poll)(ev_tstamp timeout);
/*****************************************************************************/
ev_tstamp
ev_time (void)
{
@ -81,6 +83,8 @@ get_clock (void)
cur = newcnt; \
}
/*****************************************************************************/
typedef struct
{
struct ev_io *head;
@ -137,6 +141,8 @@ fd_event (int fd, int events)
}
}
/*****************************************************************************/
static struct ev_timer **atimers;
static int atimermax, atimercnt;
@ -184,6 +190,8 @@ downheap (struct ev_timer **timers, int N, int k)
timers [k]->active = k + 1;
}
/*****************************************************************************/
typedef struct
{
struct ev_signal *head;
@ -253,6 +261,8 @@ siginit (void)
evio_start (&sigev);
}
/*****************************************************************************/
#if HAVE_EPOLL
# include "ev_epoll.c"
#endif
@ -294,6 +304,8 @@ int ev_init (int flags)
return ev_method;
}
/*****************************************************************************/
void ev_prefork (void)
{
}
@ -316,6 +328,29 @@ void ev_postfork_child (void)
siginit ();
}
/*****************************************************************************/
static ev_hook hooks [EVHOOK_NUM];
void
ev_hook_register (int type, ev_hook hook)
{
hooks [type] = hook;
}
void
ev_hook_unregister (int type, ev_hook hook)
{
hooks [type] = 0;
}
static void
hook_call (int type)
{
if (hooks [type])
hooks [type] ();
}
static void
fd_reify (void)
{
@ -439,6 +474,8 @@ void ev_loop (int flags)
do
{
hook_call (EVHOOK_PREPOLL);
/* update fd-related kernel structures */
fd_reify ();
@ -469,6 +506,8 @@ void ev_loop (int flags)
/* update ev_now, do magic */
time_update ();
hook_call (EVHOOK_POSTPOLL);
/* put pending timers into pendign queue and reschedule them */
/* absolute timers first */
timers_reify (atimers, atimercnt, ev_now);
@ -480,6 +519,8 @@ void ev_loop (int flags)
while (!ev_loop_done);
}
/*****************************************************************************/
static void
wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem)
{
@ -519,6 +560,8 @@ ev_stop (struct ev_watcher *w)
/* nop */
}
/*****************************************************************************/
void
evio_start (struct ev_io *w)
{
@ -673,7 +716,7 @@ int main (void)
struct ev_timer t[10000];
#if 0
#if 1
int i;
for (i = 0; i < 10000; ++i)
{


+ 7
- 0
ev.h View File

@ -64,6 +64,13 @@ ev_tstamp ev_time (void);
void ev_loop (int flags);
extern int ev_loop_done; /* set to 1 to break out of event loop */
#define EVHOOK_PREPOLL 0 /* called before updating fds, timers and blocking */
#define EVHOOK_POSTPOLL 1 /* called after blocking */
#define EVHOOK_NUM 2 /* just the # of hooks */
typedef void (*ev_hook)(void);
void ev_hook_register (int type, ev_hook hook);
void ev_hook_unregister (int type, ev_hook hook);
/* these may evaluate ev multiple times, and the other arguments at most once */
#define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0)


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