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Marc Alexander Lehmann 2010-03-10 09:18:24 +00:00
parent b7dea53d18
commit 8dc495aec7
4 changed files with 65 additions and 53 deletions
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14
ev++.h
View File

@ -1,7 +1,7 @@
/*
* libev simple C++ wrapper classes
*
* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
* Copyright (c) 2007,2008,2010 Marc Alexander Lehmann <libev@schmorp.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
@ -674,6 +674,7 @@ namespace ev {
EV_END_WATCHER (periodic, periodic)
#endif
#if EV_SIGNAL_ENABLE
EV_BEGIN_WATCHER (sig, signal)
void set (int signum) throw ()
{
@ -689,7 +690,9 @@ namespace ev {
start ();
}
EV_END_WATCHER (sig, signal)
#endif
#if EV_CHILD_ENABLE
EV_BEGIN_WATCHER (child, child)
void set (int pid, int trace = 0) throw ()
{
@ -705,6 +708,7 @@ namespace ev {
start ();
}
EV_END_WATCHER (child, child)
#endif
#if EV_STAT_ENABLE
EV_BEGIN_WATCHER (stat, stat)
@ -730,19 +734,23 @@ namespace ev {
EV_END_WATCHER (stat, stat)
#endif
#if EV_IDLE_ENABLE
#if EV_IDLE_ENABLE
EV_BEGIN_WATCHER (idle, idle)
void set () throw () { }
EV_END_WATCHER (idle, idle)
#endif
#endif
#if EV_PREPARE_ENABLE
EV_BEGIN_WATCHER (prepare, prepare)
void set () throw () { }
EV_END_WATCHER (prepare, prepare)
#endif
#if EV_CHECK_ENABLE
EV_BEGIN_WATCHER (check, check)
void set () throw () { }
EV_END_WATCHER (check, check)
#endif
#if EV_EMBED_ENABLE
EV_BEGIN_WATCHER (embed, embed)

32
ev.c
View File

@ -893,7 +893,7 @@ queue_events (EV_P_ W *events, int eventcnt, int type)
/*****************************************************************************/
inline_speed void
fd_event_nc (EV_P_ int fd, int revents)
fd_event_nocheck (EV_P_ int fd, int revents)
{
ANFD *anfd = anfds + fd;
ev_io *w;
@ -915,14 +915,14 @@ fd_event (EV_P_ int fd, int revents)
ANFD *anfd = anfds + fd;
if (expect_true (!anfd->reify))
fd_event_nc (EV_A_ fd, revents);
fd_event_nocheck (EV_A_ fd, revents);
}
void
ev_feed_fd_event (EV_P_ int fd, int revents)
{
if (fd >= 0 && fd < anfdmax)
fd_event_nc (EV_A_ fd, revents);
fd_event_nocheck (EV_A_ fd, revents);
}
/* make sure the external fd watch events are in-sync */
@ -1800,9 +1800,11 @@ loop_fork (EV_P)
EV_WIN32_CLOSE_FD (evpipe [1]);
}
#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
evpipe_init (EV_A);
/* now iterate over everything, in case we missed something */
pipecb (EV_A_ &pipe_w, EV_READ);
#endif
}
postfork = 0;
@ -1925,11 +1927,15 @@ ev_loop_verify (EV_P)
array_verify (EV_A_ (W *)asyncs, asynccnt);
#endif
#if EV_PREPARE_ENABLE
assert (preparemax >= preparecnt);
array_verify (EV_A_ (W *)prepares, preparecnt);
#endif
#if EV_CHECK_ENABLE
assert (checkmax >= checkcnt);
array_verify (EV_A_ (W *)checks, checkcnt);
#endif
# if 0
#if EV_CHILD_ENABLE
@ -2306,12 +2312,14 @@ ev_loop (EV_P_ int flags)
}
#endif
#if EV_PREPARE_ENABLE
/* queue prepare watchers (and execute them) */
if (expect_false (preparecnt))
{
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
EV_INVOKE_PENDING;
}
#endif
if (expect_false (loop_done))
break;
@ -2394,9 +2402,11 @@ ev_loop (EV_P_ int flags)
idle_reify (EV_A);
#endif
#if EV_CHECK_ENABLE
/* queue check watchers, to be executed first */
if (expect_false (checkcnt))
queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
#endif
EV_INVOKE_PENDING;
}
@ -3320,6 +3330,7 @@ ev_idle_stop (EV_P_ ev_idle *w)
}
#endif
#if EV_PREPARE_ENABLE
void
ev_prepare_start (EV_P_ ev_prepare *w)
{
@ -3355,7 +3366,9 @@ ev_prepare_stop (EV_P_ ev_prepare *w)
EV_FREQUENT_CHECK;
}
#endif
#if EV_CHECK_ENABLE
void
ev_check_start (EV_P_ ev_check *w)
{
@ -3391,6 +3404,7 @@ ev_check_stop (EV_P_ ev_check *w)
EV_FREQUENT_CHECK;
}
#endif
#if EV_EMBED_ENABLE
void noinline
@ -3729,17 +3743,22 @@ ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
cb (EV_A_ EV_ASYNC, asyncs [i]);
#endif
#if EV_PREPARE_ENABLE
if (types & EV_PREPARE)
for (i = preparecnt; i--; )
#if EV_EMBED_ENABLE
# if EV_EMBED_ENABLE
if (ev_cb (prepares [i]) != embed_prepare_cb)
#endif
# endif
cb (EV_A_ EV_PREPARE, prepares [i]);
#endif
#if EV_CHECK_ENABLE
if (types & EV_CHECK)
for (i = checkcnt; i--; )
cb (EV_A_ EV_CHECK, checks [i]);
#endif
#if EV_SIGNAL_ENABLE
if (types & EV_SIGNAL)
for (i = 0; i < EV_NSIG - 1; ++i)
for (wl = signals [i].head; wl; )
@ -3748,7 +3767,9 @@ ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
cb (EV_A_ EV_SIGNAL, wl);
wl = wn;
}
#endif
#if EV_CHILD_ENABLE
if (types & EV_CHILD)
for (i = EV_PID_HASHSIZE; i--; )
for (wl = childs [i]; wl; )
@ -3757,6 +3778,7 @@ ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
cb (EV_A_ EV_CHILD, wl);
wl = wn;
}
#endif
/* EV_STAT 0x00001000 /* stat data changed */
/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
}

12
ev.h
View File

@ -66,6 +66,14 @@ typedef double ev_tstamp;
# define EV_STAT_ENABLE 1
#endif
#ifndef EV_PREPARE_ENABLE
# define EV_PREPARE_ENABLE 1
#endif
#ifndef EV_CHECK_ENABLE
# define EV_CHECK_ENABLE 1
#endif
#ifndef EV_IDLE_ENABLE
# define EV_IDLE_ENABLE 1
#endif
@ -694,11 +702,15 @@ void ev_idle_start (EV_P_ ev_idle *w);
void ev_idle_stop (EV_P_ ev_idle *w);
# endif
#if EV_PREPARE_ENABLE
void ev_prepare_start (EV_P_ ev_prepare *w);
void ev_prepare_stop (EV_P_ ev_prepare *w);
#endif
#if EV_CHECK_ENABLE
void ev_check_start (EV_P_ ev_check *w);
void ev_check_stop (EV_P_ ev_check *w);
#endif
# if EV_FORK_ENABLE
void ev_fork_start (EV_P_ ev_fork *w);

60
ev.pod
View File

@ -3840,48 +3840,13 @@ fine.
If your embedding application does not need any priorities, defining these
both to C<0> will save some memory and CPU.
=item EV_PERIODIC_ENABLE
=item EV_PERIODIC_ENABLE, EV_IDLE_ENABLE, EV_EMBED_ENABLE, EV_STAT_ENABLE,
EV_PREPARE_ENABLE, EV_CHECK_ENABLE, EV_FORK_ENABLE, EV_SIGNAL_ENABLE,
EV_ASYNC_ENABLE, EV_CHILD_ENABLE.
If undefined or defined to be C<1>, then periodic timers are supported. If
defined to be C<0>, then they are not. Disabling them saves a few kB of
code.
=item EV_IDLE_ENABLE
If undefined or defined to be C<1>, then idle watchers are supported. If
defined to be C<0>, then they are not. Disabling them saves a few kB of
code.
=item EV_EMBED_ENABLE
If undefined or defined to be C<1>, then embed watchers are supported. If
defined to be C<0>, then they are not. Embed watchers rely on most other
watcher types, which therefore must not be disabled.
=item EV_STAT_ENABLE
If undefined or defined to be C<1>, then stat watchers are supported. If
defined to be C<0>, then they are not.
=item EV_FORK_ENABLE
If undefined or defined to be C<1>, then fork watchers are supported. If
defined to be C<0>, then they are not.
=item EV_SIGNAL_ENABLE
If undefined or defined to be C<1>, then signal watchers are supported. If
defined to be C<0>, then they are not.
=item EV_ASYNC_ENABLE
If undefined or defined to be C<1>, then async watchers are supported. If
defined to be C<0>, then they are not.
=item EV_CHILD_ENABLE
If undefined or defined to be C<1> (and C<_WIN32> is not defined), then
child watchers are supported. If defined to be C<0>, then they are not.
If undefined or defined to be C<1> (and the platform supports it), then
the respective watcher type is supported. If defined to be C<0>, then it
is not. Disabling watcher types mainly saves codesize.
=item EV_MINIMAL
@ -3902,10 +3867,13 @@ provide a bare-bones event library. See C<ev.h> for details on what parts
of the API are still available, and do not complain if this subset changes
over time.
This example set of settings reduces the compiled size of libev from 24Kb
to 8Kb on my GNU/Linux amd64 system (and leaves little in - there is also
an effect on the amount of memory used). With an intelligent-enough linker
further unused functions might be left out as well automatically.
This example set of settings reduces the compiled size of libev from
23.9Kb to 7.7Kb on my GNU/Linux amd64 system (and leaves little
in - there is also an effect on the amount of memory used). With
an intelligent-enough linker (gcc+binutils do this when you use
C<-Wl,--gc-sections -ffunction-sections>) further unused functions might
be left out as well automatically - a binary starting a timer and an I/O
watcher then might come out at only 5Kb.
// tuning and API changes
#define EV_MINIMAL 2
@ -3931,6 +3899,8 @@ further unused functions might be left out as well automatically.
#define EV_STAT_ENABLE 0
#define EV_PERIODIC_ENABLE 0
#define EV_IDLE_ENABLE 0
#define EV_CHECK_ENABLE 0
#define EV_PREPARE_ENABLE 0
#define EV_FORK_ENABLE 0
#define EV_SIGNAL_ENABLE 0
#define EV_CHILD_ENABLE 0