welcome glib main loop integration support.

that's it, it's here... tested and works fine, please try with your
favorite gmainloop dependent library and report problems. Suggestions:

  * GConf to access Gnome and its applications settings.
  * GtkSettings to access other properties of Gnome and its applications.
  * GUPnP (okay, we have EUPnP, but they have more features so far)
  * Rygel, based on GUPnP.
  * Libsoup, SOAP and HTTP access, useful for web access and required
    by other libraries.
  * Mojito, by Moblin, access to various web2.0 services like flickr,
    picasa, twitter...

And last but not least, this enables Flash plugin on WebKit-EFL and
may enable us to get Google Gadgets sooner (before someone writes a
proper EFL backend).

Support is auto-detected at compile time but can be disabled with
--disable-glib. Runtime support is not enabled by default (so
compiling with it will just link yet another library), one needs to
call ecore_main_loop_glib_integrate() to do so.

Thanks to INdT folks that provided the initial implementation. I
rewrote it to make it correct, but the idea was good.



SVN revision: 42825
This commit is contained in:
Gustavo Sverzut Barbieri 2009-10-01 03:56:38 +00:00
parent 0986cd681b
commit 728841b576
6 changed files with 310 additions and 3 deletions

View File

@ -85,6 +85,7 @@ want_signature="no"
want_poll="yes"
want_inotify="no"
want_tslib="no"
want_glib="no"
# core modules
want_ecore_job="yes"
@ -134,6 +135,7 @@ case "$host_os" in
;;
mingw*)
want_curl="yes"
want_glib="auto"
want_ecore_imf="yes"
want_ecore_win32="yes"
want_ecore_evas_software_gdi="yes"
@ -145,6 +147,7 @@ case "$host_os" in
;;
darwin*)
want_curl="yes"
want_glib="auto"
want_gnutls="auto"
want_openssl="auto"
want_ecore_con="yes"
@ -157,6 +160,7 @@ case "$host_os" in
;;
*)
want_curl="yes"
want_glib="auto"
want_abstract_sockets="yes"
want_gnutls="auto"
want_openssl="auto"
@ -347,6 +351,23 @@ requirements_ecore_win32="ecore eina-0 ${requirements_ecore_win32}"
requirements_ecore_wince="ecore eina-0 ${requirements_ecore_wince}"
# glib support (main loop integration)
AC_ARG_ENABLE([glib],
[AC_HELP_STRING([--disable-glib], [enable glib support. @<:@default=detect@:>@])],
[want_glib=$enableval], [])
if test "x$want_glib" != "xno"; then
PKG_CHECK_MODULES([GLIB], [glib-2.0], [have_glib="yes"], [have_glib="no"])
else
have_glib="no"
fi
if test "x$want_glib" = "xyes" -a "x$have_glib" = "xno"; then
AC_MSG_ERROR([GLib support requested, but no GLib found by pkg-config.])
elif test "x$have_glib" = "xyes"; then
AC_DEFINE(HAVE_GLIB, [1], [Have GLib])
fi
# iconv library (ecore_txt)
iconv_cflags=""
@ -1120,6 +1141,7 @@ echo
echo " Core:"
echo
echo " Ecore........................: always"
echo " GLib support...............: $have_glib"
echo " Ecore_Job....................: $have_ecore_job"
echo " Ecore_Txt....................: $have_ecore_txt"
echo " Ecore_Con....................: $have_ecore_con"

View File

@ -287,6 +287,8 @@ extern "C" {
EAPI void ecore_main_loop_select_func_set(int (*func)(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout));
EAPI void *ecore_main_loop_select_func_get(void);
EAPI Eina_Bool ecore_main_loop_glib_integrate(void);
EAPI void ecore_main_loop_begin(void);
EAPI void ecore_main_loop_quit(void);
EAPI Ecore_Fd_Handler *ecore_main_fd_handler_add(int fd, Ecore_Fd_Handler_Flags flags, int (*func) (void *data, Ecore_Fd_Handler *fd_handler), const void *data, int (*buf_func) (void *buf_data, Ecore_Fd_Handler *fd_handler), const void *buf_data);

View File

@ -1,7 +1,7 @@
MAINTAINERCLEANFILES = Makefile.in
AM_CPPFLAGS = @EVIL_CFLAGS@ @WIN32_CPPFLAGS@ @EFL_ECORE_BUILD@
AM_CFLAGS = @WIN32_CFLAGS@ @EINA_CFLAGS@ @WIN32_CPPFLAGS@
AM_CFLAGS = @WIN32_CFLAGS@ @EINA_CFLAGS@ @WIN32_CPPFLAGS@ @GLIB_CFLAGS@
lib_LTLIBRARIES = libecore.la
include_HEADERS = \
@ -35,9 +35,10 @@ ecore_time.c \
ecore_timer.c \
ecore_tree.c \
ecore_value.c \
ecore_thread.c
ecore_thread.c \
ecore_glib.c
libecore_la_LIBADD = @dlopen_libs@ @EINA_LIBS@ @EVIL_LIBS@ @WIN32_LIBS@ @LTLIBINTL@ -lm
libecore_la_LIBADD = @dlopen_libs@ @EINA_LIBS@ @EVIL_LIBS@ @GLIB_LIBS@ @WIN32_LIBS@ @LTLIBINTL@ -lm
libecore_la_LDFLAGS = -no-undefined @lt_enable_auto_import@ -version-info @version_info@ @ecore_release_info@
EXTRA_DIST = ecore_private.h

View File

@ -90,6 +90,7 @@ ecore_init(void)
_ecore_signal_init();
_ecore_exe_init();
_ecore_thread_init();
_ecore_glib_init();
_ecore_loop_time = ecore_time_get();
}
@ -115,6 +116,7 @@ ecore_shutdown(void)
if (_ecore_fps_debug) _ecore_fps_debug_shutdown();
_ecore_poller_shutdown();
_ecore_animator_shutdown();
_ecore_glib_shutdown();
_ecore_thread_shutdown();
_ecore_exe_shutdown();
_ecore_idle_enterer_shutdown();

View File

@ -0,0 +1,277 @@
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "Ecore.h"
#include <stdio.h>
#ifdef HAVE_GLIB
#include <glib.h>
static Eina_Bool _ecore_glib_active = EINA_FALSE;
static int (*_ecore_glib_select_original)(int, fd_set*, fd_set*, fd_set*, struct timeval *);
static GCond *_ecore_glib_cond = NULL;
static GPollFD *_ecore_glib_fds = NULL;
static size_t _ecore_glib_fds_size = 0;
static const size_t ECORE_GLIB_FDS_INITIAL = 128;
static const size_t ECORE_GLIB_FDS_STEP = 8;
static const size_t ECORE_GLIB_FDS_MAX_FREE = 256;
static Eina_Bool
_ecore_glib_fds_resize(size_t size)
{
void *tmp = realloc(_ecore_glib_fds, sizeof(GPollFD) * size);
if (!tmp)
{
fprintf(stderr, "ERROR: Could not realloc from %zu to %zu buckets.\n",
_ecore_glib_fds_size, size);
return EINA_FALSE;
}
_ecore_glib_fds = tmp;
_ecore_glib_fds_size = size;
return EINA_TRUE;
}
static int
_ecore_glib_context_query(GMainContext *ctx, int priority, int *p_timer)
{
int reqfds;
if (_ecore_glib_fds_size == 0)
{
if (!_ecore_glib_fds_resize(ECORE_GLIB_FDS_INITIAL))
return -1;
}
while (1)
{
size_t size;
reqfds = g_main_context_query
(ctx, priority, p_timer, _ecore_glib_fds, _ecore_glib_fds_size);
if (reqfds <= (int)_ecore_glib_fds_size)
break;
size = (1 + reqfds / ECORE_GLIB_FDS_STEP) * ECORE_GLIB_FDS_STEP;
if (!_ecore_glib_fds_resize(size))
return -1;
}
if (reqfds + ECORE_GLIB_FDS_MAX_FREE < _ecore_glib_fds_size)
{
size_t size;
size = (1 + reqfds / ECORE_GLIB_FDS_MAX_FREE) * ECORE_GLIB_FDS_MAX_FREE;
_ecore_glib_fds_resize(size);
}
return reqfds;
}
static int
_ecore_glib_context_poll_from(const GPollFD *pfds, int count, fd_set *rfds, fd_set *wfds, fd_set *efds)
{
const GPollFD *itr = pfds, *itr_end = pfds + count;
int glib_fds = -1;
for (; itr < itr_end; itr++)
{
if (glib_fds < itr->fd)
glib_fds = itr->fd;
if (itr->events & G_IO_IN)
FD_SET(itr->fd, rfds);
if (itr->events & G_IO_OUT)
FD_SET(itr->fd, wfds);
if (itr->events & (G_IO_HUP | G_IO_ERR))
FD_SET(itr->fd, efds);
}
return glib_fds + 1;
}
static int
_ecore_glib_context_poll_to(GPollFD *pfds, int count, const fd_set *rfds, const fd_set *wfds, const fd_set *efds, int ready)
{
GPollFD *itr = pfds, *itr_end = pfds + count;
for (; itr < itr_end && ready > 0; itr++)
{
itr->revents = 0;
if (FD_ISSET(itr->fd, rfds))
{
itr->revents |= G_IO_IN;
ready--;
}
if (FD_ISSET(itr->fd, wfds))
{
itr->revents |= G_IO_OUT;
ready--;
}
if (FD_ISSET(itr->fd, efds))
{
itr->revents |= G_IO_ERR;
ready--;
}
}
return ready;
}
static int
_ecore_glib_select__locked(GMainContext *ctx, int ecore_fds, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeval *ecore_timeout)
{
int priority, maxfds, glib_fds, reqfds, reqtimeout, ret;
struct timeval *timeout, glib_timeout;
g_main_context_prepare(ctx, &priority);
reqfds = _ecore_glib_context_query(ctx, priority, &reqtimeout);
if (reqfds < 0)
goto error;
glib_fds = _ecore_glib_context_poll_from
(_ecore_glib_fds, reqfds, rfds, wfds, efds);
if (reqtimeout == -1)
timeout = ecore_timeout;
else {
glib_timeout.tv_sec = reqtimeout / 1000;
glib_timeout.tv_usec = (reqtimeout % 1000) * 1000;
if (!ecore_timeout || timercmp(ecore_timeout, &glib_timeout, >))
timeout = &glib_timeout;
else
timeout = ecore_timeout;
}
maxfds = (ecore_fds >= glib_fds) ? ecore_fds : glib_fds;
ret = _ecore_glib_select_original(maxfds, rfds, wfds, efds, timeout);
ret = _ecore_glib_context_poll_to
(_ecore_glib_fds, reqfds, rfds, wfds, efds, ret);
if (g_main_context_check(ctx, priority, _ecore_glib_fds, reqfds))
g_main_context_dispatch(ctx);
return ret;
error:
return _ecore_glib_select_original
(ecore_fds, rfds, wfds, efds, ecore_timeout);
}
static int
_ecore_glib_select(int ecore_fds, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeval *ecore_timeout)
{
static GStaticMutex lock = G_STATIC_MUTEX_INIT;
static GMutex *mutex = NULL;
GMainContext *ctx = g_main_context_default();
int ret;
if (!mutex)
mutex = g_static_mutex_get_mutex(&lock);
if (g_main_context_acquire(ctx))
g_mutex_lock(mutex);
else {
if (!_ecore_glib_cond)
_ecore_glib_cond = g_cond_new();
while (!g_main_context_wait(ctx, _ecore_glib_cond, mutex))
g_thread_yield();
}
ret = _ecore_glib_select__locked
(ctx, ecore_fds, rfds, wfds, efds, ecore_timeout);
g_mutex_unlock(mutex);
g_main_context_release(ctx);
return ret;
}
#endif
void
_ecore_glib_init(void)
{
}
void
_ecore_glib_shutdown(void)
{
#ifdef HAVE_GLIB
if (!_ecore_glib_active)
return;
_ecore_glib_active = EINA_FALSE;
if (ecore_main_loop_select_func_get() == _ecore_glib_select)
ecore_main_loop_select_func_set(_ecore_glib_select_original);
if (_ecore_glib_fds)
{
free(_ecore_glib_fds);
_ecore_glib_fds = NULL;
}
_ecore_glib_fds_size = 0;
if (_ecore_glib_cond)
{
g_cond_free(_ecore_glib_cond);
_ecore_glib_cond = NULL;
}
#endif
}
/**
* Request ecore to integrate GLib's main loop.
*
* This will add a small overhead during every main loop interaction
* by checking glib's default main context (used by its main loop). If
* it have events to be checked (timers, file descriptors or idlers),
* then these will be polled alongside with Ecore's own events, then
* dispatched before Ecore's. This is done by calling
* ecore_main_loop_select_func_set().
*
* This will cooperate with previously set
* ecore_main_loop_select_func_set() by calling the old
* function. Similarly, if you want to override
* ecore_main_loop_select_func_set() after main loop is integrated,
* call the new select function set by this call (get it by calling
* ecore_main_loop_select_func_get() right after
* ecore_main_loop_glib_integrate()).
*
* This is useful to use GMainLoop libraries, like GTK, GUPnP,
* LibSoup, GConf and more. Adobe Flash plugin and other plugins
* systems depend on this as well.
*
* Once initialized/integrated, it will be valid until Ecore is
* completely shut down.
*
* @note this is only available if Ecore was compiled with GLib support.
*
* @return @c EINA_TRUE on success of @c EINA_FALSE if it failed,
* likely no GLib support in Ecore.
*/
EAPI Eina_Bool
ecore_main_loop_glib_integrate(void)
{
#ifdef HAVE_GLIB
void *func;
if (_ecore_glib_active)
return EINA_TRUE;
func = ecore_main_loop_select_func_get();
if (func == _ecore_glib_select)
{
fputs("ERROR: glib already integrated.\n", stderr);
return EINA_FALSE;
}
_ecore_glib_select_original = func;
ecore_main_loop_select_func_set(_ecore_glib_select);
_ecore_glib_active = EINA_TRUE;
return EINA_TRUE;
#else
fputs("ERROR: no glib support in ecore.\n", stderr);
return EINA_FALSE;
#endif
}

View File

@ -447,6 +447,9 @@ void _ecore_fps_debug_runtime_add(double t);
int _ecore_thread_init(void);
int _ecore_thread_shutdown(void);
void _ecore_glib_init(void);
void _ecore_glib_shutdown(void);
extern int _ecore_fps_debug;
extern double _ecore_loop_time;