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efl/legacy/ecore/src/lib/ecore/ecore_main.c

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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef _WIN32
# define WIN32_LEAN_AND_MEAN
# include <winsock2.h>
# undef WIN32_LEAN_AND_MEAN
# ifndef USER_TIMER_MINIMUM
# define USER_TIMER_MINIMUM 0x0a
# endif
#endif
#ifdef __SUNPRO_C
# include <ieeefp.h>
# include <string.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#ifndef _MSC_VER
#include <sys/time.h>
# include <unistd.h>
#else
# include <float.h>
#endif
#define FIX_HZ 1
#ifdef FIX_HZ
# ifndef _MSC_VER
# include <sys/param.h>
# endif
# ifndef HZ
# define HZ 100
# endif
#endif
#ifdef HAVE_EVIL
# include <Evil.h>
#endif
#include "Ecore.h"
#include "ecore_private.h"
#ifdef HAVE_SYS_EPOLL_H
# define HAVE_EPOLL
# include <sys/epoll.h>
#endif
#ifdef USE_G_MAIN_LOOP
#include <glib.h>
#endif
struct _Ecore_Fd_Handler
{
EINA_INLIST;
ECORE_MAGIC;
int fd;
Ecore_Fd_Handler_Flags flags;
Ecore_Fd_Cb func;
void *data;
Ecore_Fd_Cb buf_func;
void *buf_data;
Ecore_Fd_Prep_Cb prep_func;
void *prep_data;
int references;
Eina_Bool read_active : 1;
Eina_Bool write_active : 1;
Eina_Bool error_active : 1;
Eina_Bool delete_me : 1;
};
#ifdef _WIN32
struct _Ecore_Win32_Handler
{
EINA_INLIST;
ECORE_MAGIC;
HANDLE h;
Ecore_Fd_Win32_Cb func;
void *data;
int references;
Eina_Bool delete_me : 1;
};
#endif
static int _ecore_main_select(double timeout);
static void _ecore_main_prepare_handlers(void);
static void _ecore_main_fd_handlers_cleanup(void);
#ifndef _WIN32
static void _ecore_main_fd_handlers_bads_rem(void);
#endif
static void _ecore_main_fd_handlers_call(void);
static int _ecore_main_fd_handlers_buf_call(void);
#ifndef USE_G_MAIN_LOOP
static void _ecore_main_loop_iterate_internal(int once_only);
#endif
#ifdef _WIN32
static int _ecore_main_win32_select(int nfds, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds, struct timeval *timeout);
static void _ecore_main_win32_handlers_cleanup(void);
#endif
static int in_main_loop = 0;
static int do_quit = 0;
static Ecore_Fd_Handler *fd_handlers = NULL;
static Ecore_Fd_Handler *fd_handler_current = NULL;
static int fd_handlers_delete_me = 0;
#ifdef _WIN32
static Ecore_Win32_Handler *win32_handlers = NULL;
static Ecore_Win32_Handler *win32_handler_current = NULL;
static int win32_handlers_delete_me = 0;
#endif
#ifdef _WIN32
static Ecore_Select_Function main_loop_select = _ecore_main_win32_select;
#else
static Ecore_Select_Function main_loop_select = select;
#endif
static double t1 = 0.0;
static double t2 = 0.0;
#ifdef HAVE_EPOLL
static int epoll_fd = -1;
#endif
#ifdef USE_G_MAIN_LOOP
static GSource *ecore_epoll_source;
static GPollFD ecore_epoll_fd;
static guint ecore_epoll_id;
static GMainLoop* ecore_main_loop;
static gboolean ecore_idling;
static gboolean ecore_fds_ready;
#endif
static inline int _ecore_poll_events_from_fdh(Ecore_Fd_Handler *fdh)
{
int events = 0;
#ifdef HAVE_EPOLL
if (fdh->flags & ECORE_FD_READ) events |= EPOLLIN;
if (fdh->flags & ECORE_FD_WRITE) events |= EPOLLOUT;
if (fdh->flags & ECORE_FD_ERROR) events |= EPOLLERR;
#endif
return events;
}
static inline int _ecore_main_fdh_epoll_add(Ecore_Fd_Handler *fdh)
{
int r = 0;
#ifdef HAVE_EPOLL
struct epoll_event ev = {0};
ev.events = _ecore_poll_events_from_fdh(fdh);
ev.data.ptr = fdh;
INF("adding poll on %d %08x", fdh->fd, ev.events);
r = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fdh->fd, &ev);
#endif
return r;
}
static inline void _ecore_main_fdh_epoll_del(Ecore_Fd_Handler *fdh)
{
#ifdef HAVE_EPOLL
struct epoll_event ev = {0};
INF("removing poll on %d", fdh->fd);
/* could get an EBADF if somebody closed the FD before removing it */
if ((epoll_ctl(epoll_fd, EPOLL_CTL_DEL, fdh->fd, &ev) < 0) &&
(errno != EBADF))
{
ERR("Failed to delete epoll fd %d! (errno=%d)", fdh->fd, errno);
}
#endif
}
static inline int _ecore_main_fdh_epoll_modify(Ecore_Fd_Handler *fdh)
{
int r = 0;
#ifdef HAVE_EPOLL
struct epoll_event ev = {0};
ev.events = _ecore_poll_events_from_fdh(fdh);
ev.data.ptr = fdh;
INF("modifing epoll on %d to %08x", fdh->fd, ev.events);
r = epoll_ctl(epoll_fd, EPOLL_CTL_MOD, fdh->fd, &ev);
#endif
return r;
}
#ifdef HAVE_EPOLL
static inline int _ecore_main_fdh_epoll_mark_active(void)
{
struct epoll_event ev[32] = {0};
int i, ret;
ret = epoll_wait(epoll_fd, ev, sizeof(ev) / sizeof(struct epoll_event), 0);
if (ret < 0)
{
if (errno == EINTR) return -1;
ERR("epoll_wait failed %d", errno);
return -1;
}
for (i = 0; i < ret; i++)
{
Ecore_Fd_Handler *fdh;
fdh = ev[i].data.ptr;
if (!ECORE_MAGIC_CHECK(fdh, ECORE_MAGIC_FD_HANDLER))
{
ECORE_MAGIC_FAIL(fdh, ECORE_MAGIC_FD_HANDLER,
"_ecore_main_fdh_epoll_mark_active");
continue;
}
if (fdh->delete_me)
{
ERR("deleted fd in epoll");
continue;
}
if (ev->events & EPOLLIN)
fdh->read_active = 1;
if (ev->events & EPOLLOUT)
fdh->write_active = 1;
if (ev->events & EPOLLERR)
fdh->error_active = 1;
}
return ret;
}
#endif
#ifdef USE_G_MAIN_LOOP
/* like we are about to enter main_loop_select in _ecore_main_select */
static gboolean
_ecore_main_gsource_prepare(GSource *source, gint *next_time)
{
double t = _ecore_timer_next_get();
gboolean running;
INF("enter, next timeout in %.1f", t);
in_main_loop++;
if (!ecore_idling)
{
while (_ecore_timer_call(_ecore_loop_time));
_ecore_timer_cleanup();
/* when idling, busy loop checking the fds only */
if (!ecore_idling) _ecore_idle_enterer_call();
}
/* don't check fds if somebody quit */
running = g_main_loop_is_running(ecore_main_loop);
if (running)
{
/* only set idling state in dispatch */
if (ecore_idling && !_ecore_idler_exist())
{
if (_ecore_timers_exists())
{
double t = _ecore_timer_next_get();
*next_time = (t / 1000.0);
}
else
*next_time = -1;
}
else
*next_time = 0;
_ecore_main_prepare_handlers();
}
in_main_loop--;
INF("leave, timeout = %d", *next_time);
/* ready if we're not running (about to quit) */
return !running;
}
static gboolean
_ecore_main_gsource_check(GSource *source)
{
INF("enter");
in_main_loop++;
ecore_fds_ready = (_ecore_main_fdh_epoll_mark_active() > 0);
_ecore_main_fd_handlers_cleanup();
_ecore_loop_time = ecore_time_get();
_ecore_timer_enable_new();
in_main_loop--;
INF("leave");
return TRUE; /* always dispatch */
}
/* like we just came out of main_loop_select in _ecore_main_select */
static gboolean
_ecore_main_gsource_dispatch(GSource *source, GSourceFunc callback, gpointer user_data)
{
gboolean events_ready, timers_ready, idlers_ready, signals_ready;
double next_time = _ecore_timer_next_get();
events_ready = _ecore_event_exist();
timers_ready = _ecore_timers_exists() && (0.0 <= next_time);
idlers_ready = _ecore_idler_exist();
signals_ready = (_ecore_signal_count_get() > 0);
in_main_loop++;
INF("enter idling=%d fds=%d events=%d signals=%d timers=%d (next=%.2f) idlers=%d",
ecore_idling, ecore_fds_ready, events_ready, signals_ready,
_ecore_timers_exists(), next_time, idlers_ready);
if (ecore_idling && events_ready)
{
INF("calling idle exiters");
_ecore_idle_exiter_call();
ecore_idling = 0;
}
else if (!ecore_idling && !events_ready)
{
INF("start idling");
ecore_idling = 1;
}
if (ecore_idling)
{
INF("calling idler");
_ecore_idler_call();
events_ready = _ecore_event_exist();
timers_ready = _ecore_timers_exists() && (0.0 <= next_time);
idlers_ready = _ecore_idler_exist();
if ((ecore_fds_ready || events_ready || timers_ready || idlers_ready || signals_ready))
{
INF("calling idle exiters");
_ecore_idle_exiter_call();
ecore_idling = 0;
}
}
/* process events */
if (!ecore_idling)
{
INF("work");
_ecore_main_fd_handlers_call();
_ecore_main_fd_handlers_buf_call();
while (_ecore_signal_count_get()) _ecore_signal_call();
_ecore_event_call();
_ecore_main_fd_handlers_cleanup();
}
in_main_loop--;
INF("leave");
return TRUE; /* what should be returned here? */
}
static void
_ecore_main_gsource_finalize(GSource *source)
{
INF("finalize");
}
static GSourceFuncs ecore_gsource_funcs = {
.prepare = _ecore_main_gsource_prepare,
.check = _ecore_main_gsource_check,
.dispatch = _ecore_main_gsource_dispatch,
.finalize = _ecore_main_gsource_finalize,
};
#endif
void
_ecore_main_loop_init(void)
{
INF("enter");
#ifdef HAVE_EPOLL
epoll_fd = epoll_create(1);
if (epoll_fd < 0)
CRIT("Failed to create epoll fd!");
#endif
#ifdef USE_G_MAIN_LOOP
ecore_epoll_source = g_source_new(&ecore_gsource_funcs, sizeof (GSource));
if (!ecore_epoll_source)
CRIT("Failed to create glib source for epoll!");
ecore_epoll_fd.fd = epoll_fd;
ecore_epoll_fd.events = G_IO_IN;
ecore_epoll_fd.revents = 0;
g_source_add_poll(ecore_epoll_source, &ecore_epoll_fd);
ecore_epoll_id = g_source_attach(ecore_epoll_source, NULL);
if (ecore_epoll_id <= 0)
CRIT("Failed to attach glib source to default context");
#endif
INF("leave");
}
void
_ecore_main_loop_shutdown(void)
{
#ifdef USE_G_MAIN_LOOP
g_source_destroy(ecore_epoll_source);
#endif
#ifdef HAVE_EPOLL
close(epoll_fd);
#endif
}
/**
* @defgroup Ecore_Main_Loop_Group Main Loop Functions
*
* These functions control the Ecore event handling loop. This loop is
* designed to work on embedded systems all the way to large and
* powerful mutli-cpu workstations.
*
* It serialises all system signals and events into a single event
* queue, that can be easily processed without needing to worry about
* concurrency. A properly written, event-driven program using this
* kind of programming does not need threads. It makes the program very
* robust and easy to follow.
*
* Here is an example of simple program and its basic event loop flow:
* @image html prog_flow.png
*
* For examples of setting up and using a main loop, see
* @ref event_handler_example.c and @ref timer_example.c.
*/
/**
* Runs a single iteration of the main loop to process everything on the
* queue.
* @ingroup Ecore_Main_Loop_Group
*/
EAPI void
ecore_main_loop_iterate(void)
{
#ifndef USE_G_MAIN_LOOP
_ecore_main_loop_iterate_internal(1);
#else
g_main_context_iteration(NULL, 1);
#endif
}
/**
* Runs the application main loop.
*
* This function will not return until @ref ecore_main_loop_quit is called.
*
* @ingroup Ecore_Main_Loop_Group
*/
EAPI void
ecore_main_loop_begin(void)
{
#ifndef USE_G_MAIN_LOOP
in_main_loop++;
while (do_quit == 0) _ecore_main_loop_iterate_internal(0);
do_quit = 0;
in_main_loop--;
#else
ecore_main_loop = g_main_loop_new(NULL, FALSE);
g_main_loop_run(ecore_main_loop);
#endif
}
/**
* Quits the main loop once all the events currently on the queue have
* been processed.
* @ingroup Ecore_Main_Loop_Group
*/
EAPI void
ecore_main_loop_quit(void)
{
#ifndef USE_G_MAIN_LOOP
do_quit = 1;
#else
INF("enter");
g_main_loop_quit(ecore_main_loop);
INF("leave");
#endif
}
/**
* Sets the function to use when monitoring multiple file descriptors,
* and waiting until one of more of the file descriptors before ready
* for some class of I/O operation.
*
* This function will be used instead of the system call select and
* could possible be used to integrate the Ecore event loop with an
* external event loop.
*
* @warning you don't know how to use, don't even try to use it.
*
* @ingroup Ecore_Main_Loop_Group
*/
EAPI void
ecore_main_loop_select_func_set(Ecore_Select_Function func)
{
main_loop_select = func;
}
/**
* Gets the select function set by ecore_select_func_set(),
* or the native select function if none was set.
*
* @ingroup Ecore_Main_Loop_Group
*/
EAPI void *
ecore_main_loop_select_func_get(void)
{
return main_loop_select;
}
/**
* @defgroup Ecore_FD_Handler_Group File Event Handling Functions
*
* Functions that deal with file descriptor handlers.
*/
/**
* Adds a callback for activity on the given file descriptor.
*
* @p func will be called during the execution of @ref ecore_main_loop_begin
* when the file descriptor is available for reading, or writing, or both.
*
* Normally the return value from the @p func is "zero means this handler is
* finished and can be deleted" as is usual for handler callbacks. However,
* if the @p buf_func is supplied, then the return value from the @p func is
* "non zero means the handler should be called again in a tight loop".
*
* @p buf_func is called during event loop handling to check if data that has
* been read from the file descriptor is in a buffer and is available to
* read. Some systems (notably xlib) handle their own buffering, and would
* otherwise not work with select(). These systems should use a @p buf_func.
* This is a most annoying hack, only ecore_x uses it, so refer to that for
* an example. NOTE - @p func should probably return "one" always if
* @p buf_func is used, to avoid confusion with the other return value
* semantics.
*
* @param fd The file descriptor to watch.
* @param flags To watch it for read (@c ECORE_FD_READ) and/or
* (@c ECORE_FD_WRITE) write ability. @c ECORE_FD_ERROR
*
* @param func The callback function.
* @param data The data to pass to the callback.
* @param buf_func The function to call to check if any data has been
* buffered and already read from the fd. Can be @c NULL.
* @param buf_data The data to pass to the @p buf_func function.
* @return A fd handler handle if successful. @c NULL otherwise.
* @ingroup Ecore_FD_Handler_Group
*/
EAPI Ecore_Fd_Handler *
ecore_main_fd_handler_add(int fd, Ecore_Fd_Handler_Flags flags, Ecore_Fd_Cb func, const void *data,
Ecore_Fd_Cb buf_func, const void *buf_data)
{
Ecore_Fd_Handler *fdh;
if ((fd < 0) || (flags == 0) || (!func)) return NULL;
fdh = calloc(1, sizeof(Ecore_Fd_Handler));
if (!fdh) return NULL;
ECORE_MAGIC_SET(fdh, ECORE_MAGIC_FD_HANDLER);
fdh->fd = fd;
fdh->flags = flags;
if (0 > _ecore_main_fdh_epoll_add(fdh))
{
ERR("Failed to add epoll fd %d (errno = %d)!", fd, errno);
free(fdh);
return NULL;
}
fdh->read_active = 0;
fdh->write_active = 0;
fdh->error_active = 0;
fdh->delete_me = 0;
fdh->func = func;
fdh->data = (void *)data;
fdh->buf_func = buf_func;
fdh->buf_data = (void *)buf_data;
fd_handlers = (Ecore_Fd_Handler *)
eina_inlist_append(EINA_INLIST_GET(fd_handlers),
EINA_INLIST_GET(fdh));
return fdh;
}
#ifdef _WIN32
EAPI Ecore_Win32_Handler *
ecore_main_win32_handler_add(void *h, Ecore_Fd_Win32_Cb func, const void *data)
{
Ecore_Win32_Handler *wh;
if (!h || !func) return NULL;
wh = calloc(1, sizeof(Ecore_Win32_Handler));
if (!wh) return NULL;
ECORE_MAGIC_SET(wh, ECORE_MAGIC_WIN32_HANDLER);
wh->h = (HANDLE)h;
wh->delete_me = 0;
wh->func = func;
wh->data = (void *)data;
win32_handlers = (Ecore_Win32_Handler *)
eina_inlist_append(EINA_INLIST_GET(win32_handlers),
EINA_INLIST_GET(wh));
return wh;
}
#else
EAPI Ecore_Win32_Handler *
ecore_main_win32_handler_add(void *h __UNUSED__, Ecore_Fd_Win32_Cb func __UNUSED__,
const void *data __UNUSED__)
{
return NULL;
}
#endif
/**
* Deletes the given FD handler.
* @param fd_handler The given FD handler.
* @return The data pointer set using @ref ecore_main_fd_handler_add,
* for @p fd_handler on success. @c NULL otherwise.
* @ingroup Ecore_FD_Handler_Group
*
* Beware that if the fd is already closed, ecore may complain if it uses
* epoll internally, and that in some rare cases this may be able to cause
* crashes and instability. Remember to delete your fd handlers before the
* fd's they listen to are closed.
*/
EAPI void *
ecore_main_fd_handler_del(Ecore_Fd_Handler *fd_handler)
{
if (!ECORE_MAGIC_CHECK(fd_handler, ECORE_MAGIC_FD_HANDLER))
{
ECORE_MAGIC_FAIL(fd_handler, ECORE_MAGIC_FD_HANDLER,
"ecore_main_fd_handler_del");
return NULL;
}
fd_handler->delete_me = 1;
fd_handlers_delete_me = 1;
_ecore_main_fdh_epoll_del(fd_handler);
return fd_handler->data;
}
#ifdef _WIN32
EAPI void *
ecore_main_win32_handler_del(Ecore_Win32_Handler *win32_handler)
{
if (!ECORE_MAGIC_CHECK(win32_handler, ECORE_MAGIC_WIN32_HANDLER))
{
ECORE_MAGIC_FAIL(win32_handler, ECORE_MAGIC_WIN32_HANDLER,
"ecore_main_win32_handler_del");
return NULL;
}
win32_handler->delete_me = 1;
win32_handlers_delete_me = 1;
return win32_handler->data;
}
#else
EAPI void *
ecore_main_win32_handler_del(Ecore_Win32_Handler *win32_handler __UNUSED__)
{
return NULL;
}
#endif
EAPI void
ecore_main_fd_handler_prepare_callback_set(Ecore_Fd_Handler *fd_handler, Ecore_Fd_Prep_Cb func, const void *data)
{
if (!ECORE_MAGIC_CHECK(fd_handler, ECORE_MAGIC_FD_HANDLER))
{
ECORE_MAGIC_FAIL(fd_handler, ECORE_MAGIC_FD_HANDLER,
"ecore_main_fd_handler_prepare_callback_set");
return;
}
fd_handler->prep_func = func;
fd_handler->prep_data = (void *) data;
}
/**
* Retrieves the file descriptor that the given handler is handling.
* @param fd_handler The given FD handler.
* @return The file descriptor the handler is watching.
* @ingroup Ecore_FD_Handler_Group
*/
EAPI int
ecore_main_fd_handler_fd_get(Ecore_Fd_Handler *fd_handler)
{
if (!ECORE_MAGIC_CHECK(fd_handler, ECORE_MAGIC_FD_HANDLER))
{
ECORE_MAGIC_FAIL(fd_handler, ECORE_MAGIC_FD_HANDLER,
"ecore_main_fd_handler_fd_get");
return -1;
}
return fd_handler->fd;
}
/**
* Return if read, write or error, or a combination thereof, is active on the
* file descriptor of the given FD handler.
* @param fd_handler The given FD handler.
* @param flags The flags, @c ECORE_FD_READ, @c ECORE_FD_WRITE or
* @c ECORE_FD_ERROR to query.
* @return @c 1 if any of the given flags are active. @c 0 otherwise.
* @ingroup Ecore_FD_Handler_Group
*/
EAPI int
ecore_main_fd_handler_active_get(Ecore_Fd_Handler *fd_handler, Ecore_Fd_Handler_Flags flags)
{
int ret;
if (!ECORE_MAGIC_CHECK(fd_handler, ECORE_MAGIC_FD_HANDLER))
{
ECORE_MAGIC_FAIL(fd_handler, ECORE_MAGIC_FD_HANDLER,
"ecore_main_fd_handler_active_get");
return 0;
}
ret = 0;
if ((flags & ECORE_FD_READ) && (fd_handler->read_active)) ret = 1;
if ((flags & ECORE_FD_WRITE) && (fd_handler->write_active)) ret = 1;
if ((flags & ECORE_FD_ERROR) && (fd_handler->error_active)) ret = 1;
return ret;
}
/**
* Set what active streams the given FD handler should be monitoring.
* @param fd_handler The given FD handler.
* @param flags The flags to be watching.
* @ingroup Ecore_FD_Handler_Group
*/
EAPI void
ecore_main_fd_handler_active_set(Ecore_Fd_Handler *fd_handler, Ecore_Fd_Handler_Flags flags)
{
if (!ECORE_MAGIC_CHECK(fd_handler, ECORE_MAGIC_FD_HANDLER))
{
ECORE_MAGIC_FAIL(fd_handler, ECORE_MAGIC_FD_HANDLER,
"ecore_main_fd_handler_active_set");
return;
}
fd_handler->flags = flags;
if (0 > _ecore_main_fdh_epoll_modify(fd_handler))
{
ERR("Failed to mod epoll fd %d!", fd_handler->fd);
}
}
void
_ecore_main_shutdown(void)
{
if (in_main_loop)
{
ERR("\n"
"*** ECORE WARINING: Calling ecore_shutdown() while still in the main loop.\n"
"*** Program may crash or behave strangely now.");
return;
}
while (fd_handlers)
{
Ecore_Fd_Handler *fdh;
fdh = fd_handlers;
fd_handlers = (Ecore_Fd_Handler *) eina_inlist_remove(EINA_INLIST_GET(fd_handlers),
EINA_INLIST_GET(fdh));
ECORE_MAGIC_SET(fdh, ECORE_MAGIC_NONE);
free(fdh);
}
fd_handlers_delete_me = 0;
fd_handler_current = NULL;
#ifdef _WIN32
while (win32_handlers)
{
Ecore_Win32_Handler *wh;
wh = win32_handlers;
win32_handlers = (Ecore_Win32_Handler *) eina_inlist_remove(EINA_INLIST_GET(win32_handlers),
EINA_INLIST_GET(wh));
ECORE_MAGIC_SET(wh, ECORE_MAGIC_NONE);
free(wh);
}
win32_handlers_delete_me = 0;
win32_handler_current = NULL;
#endif
}
static void
_ecore_main_prepare_handlers(void)
{
Ecore_Fd_Handler *fdh;
/* call the prepare callback for all handlers */
EINA_INLIST_FOREACH(fd_handlers, fdh)
{
if (!fdh->delete_me && fdh->prep_func)
{
fdh->references++;
fdh->prep_func (fdh->prep_data, fdh);
fdh->references--;
}
}
}
static int
_ecore_main_select(double timeout)
{
struct timeval tv, *t;
fd_set rfds, wfds, exfds;
int max_fd;
int ret;
t = NULL;
if ((!finite(timeout)) || (timeout == 0.0)) /* finite() tests for NaN, too big, too small, and infinity. */
{
tv.tv_sec = 0;
tv.tv_usec = 0;
t = &tv;
}
else if (timeout > 0.0)
{
int sec, usec;
#ifdef FIX_HZ
timeout += (0.5 / HZ);
sec = (int)timeout;
usec = (int)((timeout - (double)sec) * 1000000);
#else
sec = (int)timeout;
usec = (int)((timeout - (double)sec) * 1000000);
#endif
tv.tv_sec = sec;
tv.tv_usec = usec;
t = &tv;
}
max_fd = 0;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&exfds);
/* call the prepare callback for all handlers */
_ecore_main_prepare_handlers();
#ifndef HAVE_EPOLL
Ecore_Fd_Handler *fdh;
EINA_INLIST_FOREACH(fd_handlers, fdh)
{
if (!fdh->delete_me)
{
if (fdh->flags & ECORE_FD_READ)
{
FD_SET(fdh->fd, &rfds);
if (fdh->fd > max_fd) max_fd = fdh->fd;
}
if (fdh->flags & ECORE_FD_WRITE)
{
FD_SET(fdh->fd, &wfds);
if (fdh->fd > max_fd) max_fd = fdh->fd;
}
if (fdh->flags & ECORE_FD_ERROR)
{
FD_SET(fdh->fd, &exfds);
if (fdh->fd > max_fd) max_fd = fdh->fd;
}
}
}
#else /* HAVE_EPOLL */
/* polling on the epoll fd will wake when an fd in the epoll set is active */
FD_SET(epoll_fd, &rfds);
max_fd = epoll_fd;
#endif /* HAVE_EPOLL */
if (_ecore_signal_count_get()) return -1;
ret = main_loop_select(max_fd + 1, &rfds, &wfds, &exfds, t);
_ecore_loop_time = ecore_time_get();
if (ret < 0)
{
#ifndef _WIN32
if (errno == EINTR) return -1;
else if (errno == EBADF) _ecore_main_fd_handlers_bads_rem();
#endif
}
if (ret > 0)
{
#ifdef HAVE_EPOLL
_ecore_main_fdh_epoll_mark_active();
#else /* HAVE_EPOLL */
Ecore_Fd_Handler *fdh;
EINA_INLIST_FOREACH(fd_handlers, fdh)
{
if (!fdh->delete_me)
{
if (FD_ISSET(fdh->fd, &rfds))
fdh->read_active = 1;
if (FD_ISSET(fdh->fd, &wfds))
fdh->write_active = 1;
if (FD_ISSET(fdh->fd, &exfds))
fdh->error_active = 1;
}
}
#endif /* HAVE_EPOLL */
_ecore_main_fd_handlers_cleanup();
#ifdef _WIN32
_ecore_main_win32_handlers_cleanup();
#endif
return 1;
}
return 0;
}
#ifndef _WIN32
static void
_ecore_main_fd_handlers_bads_rem(void)
{
Ecore_Fd_Handler *fdh;
Eina_Inlist *l;
int found = 0;
ERR("Removing bad fds");
for (l = EINA_INLIST_GET(fd_handlers); l; )
{
fdh = (Ecore_Fd_Handler *) l;
l = l->next;
errno = 0;
if ((fcntl(fdh->fd, F_GETFD) < 0) && (errno == EBADF))
{
ERR("Found bad fd at index %d", fdh->fd);
if (fdh->flags & ECORE_FD_ERROR)
{
ERR("Fd set for error! calling user");
fdh->references++;
if (!fdh->func(fdh->data, fdh))
{
ERR("Fd function err returned 0, remove it");
fdh->delete_me = 1;
fd_handlers_delete_me = 1;
found++;
}
fdh->references--;
}
else
{
ERR("Problematic fd found at %d! setting it for delete", fdh->fd);
fdh->delete_me = 1;
fd_handlers_delete_me = 1;
found++;
}
}
}
if (found == 0)
{
#ifdef HAVE_GLIB
ERR("No bad fd found. Maybe a foreign fd from glib?");
#else
ERR("No bad fd found. EEEK!");
#endif
}
_ecore_main_fd_handlers_cleanup();
}
#endif
static void
_ecore_main_fd_handlers_cleanup(void)
{
Ecore_Fd_Handler *fdh;
Eina_Inlist *l;
int deleted_in_use = 0;
if (!fd_handlers_delete_me) return;
for (l = EINA_INLIST_GET(fd_handlers); l; )
{
fdh = (Ecore_Fd_Handler *) l;
l = l->next;
if (fdh->delete_me)
{
if (fdh->references)
{
deleted_in_use++;
continue;
}
fd_handlers = (Ecore_Fd_Handler *)
eina_inlist_remove(EINA_INLIST_GET(fd_handlers),
EINA_INLIST_GET(fdh));
ECORE_MAGIC_SET(fdh, ECORE_MAGIC_NONE);
free(fdh);
}
}
if (!deleted_in_use) fd_handlers_delete_me = 0;
}
#ifdef _WIN32
static void
_ecore_main_win32_handlers_cleanup(void)
{
Ecore_Win32_Handler *wh;
Eina_Inlist *l;
int deleted_in_use = 0;
if (!win32_handlers_delete_me) return;
for (l = EINA_INLIST_GET(win32_handlers); l; )
{
wh = (Ecore_Win32_Handler *)l;
l = l->next;
if (wh->delete_me)
{
if (wh->references)
{
deleted_in_use++;
continue;
}
win32_handlers = (Ecore_Win32_Handler *)
eina_inlist_remove(EINA_INLIST_GET(win32_handlers),
EINA_INLIST_GET(wh));
ECORE_MAGIC_SET(wh, ECORE_MAGIC_NONE);
free(wh);
}
}
if (!deleted_in_use) win32_handlers_delete_me = 0;
}
#endif
static void
_ecore_main_fd_handlers_call(void)
{
if (!fd_handler_current)
{
/* regular main loop, start from head */
fd_handler_current = fd_handlers;
}
else
{
/* recursive main loop, continue from where we were */
fd_handler_current = (Ecore_Fd_Handler *)EINA_INLIST_GET(fd_handler_current)->next;
}
while (fd_handler_current)
{
Ecore_Fd_Handler *fdh = fd_handler_current;
if (!fdh->delete_me)
{
if ((fdh->read_active) ||
(fdh->write_active) ||
(fdh->error_active))
{
fdh->references++;
if (!fdh->func(fdh->data, fdh))
{
fdh->delete_me = 1;
fd_handlers_delete_me = 1;
}
fdh->references--;
fdh->read_active = 0;
fdh->write_active = 0;
fdh->error_active = 0;
}
}
if (fd_handler_current) /* may have changed in recursive main loops */
fd_handler_current = (Ecore_Fd_Handler *)EINA_INLIST_GET(fd_handler_current)->next;
}
}
static int
_ecore_main_fd_handlers_buf_call(void)
{
Ecore_Fd_Handler *fdh;
int ret;
ret = 0;
EINA_INLIST_FOREACH(fd_handlers, fdh)
{
if (!fdh->delete_me)
{
if (fdh->buf_func)
{
fdh->references++;
if (fdh->buf_func(fdh->buf_data, fdh))
{
ret |= fdh->func(fdh->data, fdh);
fdh->read_active = 1;
}
fdh->references--;
}
}
}
return ret;
}
#ifndef USE_G_MAIN_LOOP
static void
_ecore_main_loop_iterate_internal(int once_only)
{
double next_time = -1.0;
int have_event = 0;
int have_signal;
in_main_loop++;
/* expire any timers */
while (_ecore_timer_call(_ecore_loop_time));
_ecore_timer_cleanup();
/* process signals into events .... */
while (_ecore_signal_count_get()) _ecore_signal_call();
if (_ecore_event_exist())
{
_ecore_idle_enterer_call();
have_event = 1;
_ecore_main_select(0.0);
_ecore_loop_time = ecore_time_get();
_ecore_timer_enable_new();
goto process_events;
}
/* call idle enterers ... */
if (!once_only) _ecore_idle_enterer_call();
else
{
have_event = have_signal = 0;
if (_ecore_main_select(0.0) > 0) have_event = 1;
if (_ecore_signal_count_get() > 0) have_signal = 1;
if (have_signal || have_event)
{
_ecore_loop_time = ecore_time_get();
_ecore_timer_enable_new();
goto process_events;
}
}
/* if these calls caused any buffered events to appear - deal with them */
_ecore_main_fd_handlers_buf_call();
/* if ther are any - jump to processing them */
if (_ecore_event_exist())
{
have_event = 1;
_ecore_main_select(0.0);
_ecore_loop_time = ecore_time_get();
_ecore_timer_enable_new();
goto process_events;
}
if (once_only)
{
_ecore_idle_enterer_call();
in_main_loop--;
_ecore_loop_time = ecore_time_get();
_ecore_timer_enable_new();
return;
}
if (_ecore_fps_debug)
{
t2 = ecore_time_get();
if ((t1 > 0.0) && (t2 > 0.0))
_ecore_fps_debug_runtime_add(t2 - t1);
}
start_loop:
/* any timers re-added as a result of these are allowed to go */
_ecore_timer_enable_new();
if (do_quit)
{
_ecore_loop_time = ecore_time_get();
in_main_loop--;
_ecore_timer_enable_new();
return;
}
if (!_ecore_event_exist())
{
/* init flags */
have_event = have_signal = 0;
next_time = _ecore_timer_next_get();
/* no timers */
if (next_time < 0)
{
/* no idlers */
if (!_ecore_idler_exist())
{
if (_ecore_main_select(-1.0) > 0) have_event = 1;
}
/* idlers */
else
{
for (;;)
{
if (!_ecore_idler_call()) goto start_loop;
if (_ecore_event_exist()) break;
if (_ecore_main_select(0.0) > 0) have_event = 1;
if (_ecore_signal_count_get() > 0) have_signal = 1;
if (have_event || have_signal) break;
if (_ecore_timers_exists()) goto start_loop;
if (do_quit) break;
}
}
}
/* timers */
else
{
/* no idlers */
if (!_ecore_idler_exist())
{
if (_ecore_main_select(next_time) > 0) have_event = 1;
}
/* idlers */
else
{
for (;;)
{
if (!_ecore_idler_call()) goto start_loop;
if (_ecore_event_exist()) break;
if (_ecore_main_select(0.0) > 0) have_event = 1;
if (_ecore_signal_count_get() > 0) have_signal = 1;
if (have_event || have_signal) break;
next_time = _ecore_timer_next_get();
if (next_time <= 0) break;
if (do_quit) break;
}
}
}
_ecore_loop_time = ecore_time_get();
}
if (_ecore_fps_debug) t1 = ecore_time_get();
/* we came out of our "wait state" so idle has exited */
if (!once_only) _ecore_idle_exiter_call();
/* call the fd handler per fd that became alive... */
/* this should read or write any data to the monitored fd and then */
/* post events onto the ecore event pipe if necessary */
process_events:
_ecore_main_fd_handlers_call();
_ecore_main_fd_handlers_buf_call();
/* process signals into events .... */
while (_ecore_signal_count_get()) _ecore_signal_call();
/* handle events ... */
_ecore_event_call();
_ecore_main_fd_handlers_cleanup();
if (once_only) _ecore_idle_enterer_call();
in_main_loop--;
}
#endif
#ifdef _WIN32
static int
_ecore_main_win32_select(int nfds __UNUSED__, fd_set *readfds, fd_set *writefds,
fd_set *exceptfds, struct timeval *tv)
{
HANDLE objects[MAXIMUM_WAIT_OBJECTS];
int sockets[MAXIMUM_WAIT_OBJECTS];
Ecore_Fd_Handler *fdh;
Ecore_Win32_Handler *wh;
unsigned int objects_nbr = 0;
unsigned int handles_nbr = 0;
unsigned int events_nbr = 0;
DWORD result;
DWORD timeout;
MSG msg;
unsigned int i;
int res;
/* Create an event object per socket */
EINA_INLIST_FOREACH(fd_handlers, fdh)
{
WSAEVENT event;
long network_event;
network_event = 0;
if (FD_ISSET(fdh->fd, readfds))
network_event |= FD_READ;
if (FD_ISSET(fdh->fd, writefds))
network_event |= FD_WRITE;
if (FD_ISSET(fdh->fd, exceptfds))
network_event |= FD_OOB;
if (network_event)
{
event = WSACreateEvent();
WSAEventSelect(fdh->fd, event, network_event);
objects[objects_nbr] = event;
sockets[events_nbr] = fdh->fd;
events_nbr++;
objects_nbr++;
}
}
/* store the HANDLEs in the objects to wait for */
EINA_INLIST_FOREACH(win32_handlers, wh)
{
objects[objects_nbr] = wh->h;
handles_nbr++;
objects_nbr++;
}
/* Empty the queue before waiting */
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
/* Wait for any message sent or posted to this queue */
/* or for one of the passed handles be set to signaled. */
if (!tv)
timeout = INFINITE;
else
timeout = (DWORD)((tv->tv_sec * 1000.0) + (tv->tv_usec / 1000.0));
if (timeout == 0) return 0;
result = MsgWaitForMultipleObjects(objects_nbr, (const HANDLE *)objects, EINA_FALSE,
timeout, QS_ALLINPUT);
FD_ZERO(readfds);
FD_ZERO(writefds);
FD_ZERO(exceptfds);
/* The result tells us the type of event we have. */
if (result == WAIT_FAILED)
{
char *msg;
msg = evil_last_error_get();
ERR(" * %s\n", msg);
free(msg);
res = -1;
}
else if (result == WAIT_TIMEOUT)
{
ERR("time out\n");
res = 0;
}
else if (result == (WAIT_OBJECT_0 + objects_nbr))
{
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
res = 0;
}
else if ((result >= 0) && (result < WAIT_OBJECT_0 + events_nbr))
{
WSANETWORKEVENTS network_event;
WSAEnumNetworkEvents(sockets[result], objects[result], &network_event);
if (network_event.lNetworkEvents & FD_READ)
FD_SET(sockets[result], readfds);
if (network_event.lNetworkEvents & FD_WRITE)
FD_SET(sockets[result], writefds);
if (network_event.lNetworkEvents & FD_OOB)
FD_SET(sockets[result], exceptfds);
res = 1;
}
else if ((result >= (WAIT_OBJECT_0 + events_nbr)) &&
(result < (WAIT_OBJECT_0 + objects_nbr)))
{
if (!win32_handler_current)
{
/* regular main loop, start from head */
win32_handler_current = win32_handlers;
}
else
{
/* recursive main loop, continue from where we were */
win32_handler_current = (Ecore_Win32_Handler *)EINA_INLIST_GET(win32_handler_current)->next;
}
while (win32_handler_current)
{
wh = win32_handler_current;
if (objects[result - WAIT_OBJECT_0] == wh->h)
{
if (!wh->delete_me)
{
wh->references++;
if (!wh->func(wh->data, wh))
{
wh->delete_me = 1;
win32_handlers_delete_me = 1;
}
wh->references--;
}
}
if (win32_handler_current) /* may have changed in recursive main loops */
win32_handler_current = (Ecore_Win32_Handler *)EINA_INLIST_GET(win32_handler_current)->next;
}
res = 1;
}
else
{
ERR("unknown result...\n");
res = -1;
}
/* Remove event objects again */
for (i = 0; i < events_nbr; i++) WSACloseEvent(objects[i]);
return res;
}
#endif
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