added plugs for OSX /dev/events - does not yet work.

This commit is contained in:
Axel Kittenberger 2010-11-26 16:52:24 +00:00
parent 9a1c297017
commit c80d59cdfa
5 changed files with 111 additions and 11 deletions

View File

@ -5,6 +5,9 @@ lsyncd_SOURCES = lsyncd.h lsyncd.c lsyncd.lua
if INOTIFY
lsyncd_SOURCES += inotify.c
endif
if FSEVENTS
lsyncd_SOURCES += fsevents.c
endif
lsyncd_LDADD = $(LIBLUA_LIBS)
exampledir = $(datarootdir)/doc/@PACKAGE@

View File

@ -29,7 +29,7 @@ AM_CONDITIONAL([RUNNER], [test x${with_runner} != x])
###
# --without-inotify option
AC_ARG_WITH([inotify],
[ --without-inotify Do not compile Linux inotify event interface (on by default)])
[ --without-inotify Do not compile Linux inotify event interface. On by default.])
if test "x${with_inotify}" == xno; then
echo "compiling without inotify"
else
@ -38,6 +38,22 @@ else
fi
AM_CONDITIONAL([INOTIFY], [test x${with_inotify} != xno])
###
# --with-fsevents
AC_ARG_WITH([fsevents],
[ --with-fsevents=DIR Uses MacOS (10.5) /dev/fsevents, experimental! Off by default.
As DIR specify dir where xnu headers can be found.])
if test "x${with_fsevents}" == xno; then
with_fsevents=
fi
if test "x${with_fsevents}" != x; then
echo "compiling with fsevents. Warning experimental!"
AC_DEFINE(LSYNCD_WITH_FSEVENTS,,"descr")
else
echo "compiling without fsevents"
fi
AM_CONDITIONAL([FSEVENTS], [test x${with_fsevents} != x])
# Checks for typedefs, structures, and compiler characteristics.
# Checks for library functions.
AC_CONFIG_FILES([Makefile])

49
fsevents.c Normal file
View File

@ -0,0 +1,49 @@
/**
* fsevents.c from Lsyncd - Live (Mirror) Syncing Demon
*
* License: GPLv2 (see COPYING) or any later version
*
* Authors: Axel Kittenberger <axkibe@gmail.com>
*
* -----------------------------------------------------------------------
*
* Event interface for MacOS 10(.5) /dev/fsevents interface.
*
* WARNING! AFAIK this interface is not strictly considered "public" API
* by Apple. Thus it might easily change between versions. Also its said,
* altough every event receiver has its own message queue, the OS X kernel
* only deletes a message after *all* registered receivers handled it. So
* one receiver blocking overflows all receivers. So spotlight might have
* to do more stuff, when Lsyncd might cause an overflow. Use at own risk.
*
* Special thanks go to Amit Singh and his fslogger demonstration that
* showed how apples /dev/fsevents can be used.
* http://osxbook.com/software/fslogger/
*/
#include "lsyncd.h"
/**
* registers fsevents functions.
*/
extern void
register_fsevents(lua_State *L) {
// TODO
}
/**
* opens and initalizes fsevents.
*/
extern void
open_fsevents(lua_State *L) {
// TODO
}
/**
* closes fsevents
*/
extern void
close_fsevents() {
// TODO
}

View File

@ -40,16 +40,18 @@
* The Lua part of lsyncd if compiled into the binary.
*/
#ifndef LSYNCD_DEFAULT_RUNNER_FILE
extern char _binary_luac_out_start;
extern char _binary_luac_out_end;
extern char _binary_luac_out_start;
extern char _binary_luac_out_end;
#endif
/**
* The default notification system to use.
*/
#ifdef LSYNCD_WITH_INOTIFY
extern char *default_notify = "Inotify";
#if defined LSYNCD_WITH_INOTIFY
static char *default_notify = "Inotify";
#elif defined LSYNCD_WITH_FSEVENTS
static char *default_notify = "FsEvents";
#else
# error "need at least one notifcation system. please rerun ./configure"
#endif
@ -73,7 +75,7 @@ static bool is_daemon = false;
* True after first configuration phase. This is to write configuration error
* messages to stdout/stderr after being first started. Then it uses whatever
* it has been configured to. This survives a reset by HUP signal or
* inotify OVERFLOW!
* inotify OVERFLOW.
*/
static bool running = false;
@ -1142,12 +1144,15 @@ masterloop(lua_State *L)
lua_pop(L, 2);
if (have_alarm && time_before_eq(alarm_time, now)) {
/* there is a delay that wants to be handled already thus do not
* read from inotify_fd and jump directly to its handling */
/* there is a delay that wants to be handled already thus instead of
* reading/writing from observances it jumps directly to handling */
// TODO: Actually it might be smarter to handler observances eitherway.
// since event queues might overflow.
logstring("Masterloop", "immediately handling delays.");
} else {
/* use select() to determine what happens next
* + a new event on inotify
* + a new event on an observance
* + an alarm on timeout
* + the return of a child process */
struct timespec tv;
@ -1336,8 +1341,14 @@ main1(int argc, char *argv[])
lua_setglobal(L, "lysncd");
lua_getglobal(L, "lysncd");
#ifdef LSYNCD_WITH_INOTIFY
register_inotify(L);
lua_settable(L, -3);
#endif
#ifdef LSYNCD_WITH_FSEVENTS
register_fsevents(L);
lua_settable(L, -3);
#endif
lua_pop(L, 1);
if (check_logcat("Debug") >= settings.log_level) {
@ -1509,7 +1520,12 @@ main1(int argc, char *argv[])
}
}
#ifdef LSYNCD_WITH_INOTIFY
open_inotify(L);
#endif
#ifdef LSYNCD_WITH_FSEVENTS
open_fsevents(L);
#endif
{
/* adds signal handlers *
@ -1529,7 +1545,8 @@ main1(int argc, char *argv[])
/* runs initialitions from runner
* lua code will set configuration and add watches */
load_runner_func(L, "initialize");
if (lua_pcall(L, 0, 0, -2)) {
lua_pushstring(L, default_notify);
if (lua_pcall(L, 1, 0, -3)) {
exit(-1); // ERRNO
}
lua_pop(L, 1);
@ -1566,7 +1583,12 @@ main1(int argc, char *argv[])
settings.log_level = 0,
settings.nodaemon = false,
#ifdef LSYNCD_WITH_INOTIFY
close_inotify();
#endif
#ifdef LSYNCD_WITH_FSEVENTS
close_fsevents();
#endif
lua_close(L);
return 0;
}

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@ -116,10 +116,20 @@ extern void unobserve_fd(int fd);
/*-----------------------------------------------------------------------------
* inotify
*/
#ifdef LSYNCD_WITH_INOTIFY
extern void register_inotify(lua_State *L);
extern void open_inotify(lua_State *L);
extern void close_inotify();
#endif
/*-----------------------------------------------------------------------------
* /dev/fsevents
*/
#ifdef LSYNCD_WITH_FSEVENTS
extern void register_fsevents(lua_State *L);
extern void open_fsevents(lua_State *L);
extern void close_fsevents();
#endif
#endif