/* * vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2 */ #ifdef HAVE_CONFIG_H # include #endif #ifdef _WIN32 # define WIN32_LEAN_AND_MEAN # include # undef WIN32_LEAN_AND_MEAN # ifndef USER_TIMER_MINIMUM # define USER_TIMER_MINIMUM 0x0a # endif #endif #ifdef __SUNPRO_C # include # include #endif #include #include #include #include #include #include #ifndef _MSC_VER #include # include #else # include #endif #define FIX_HZ 1 #ifdef FIX_HZ # ifndef _MSC_VER # include # endif # ifndef HZ # define HZ 100 # endif #endif #ifdef HAVE_EVIL # include #endif #include "Ecore.h" #include "ecore_private.h" #ifdef HAVE_SYS_EPOLL_H # define HAVE_EPOLL # include #endif struct _Ecore_Fd_Handler { EINA_INLIST; ECORE_MAGIC; int fd; Ecore_Fd_Handler_Flags flags; Eina_Bool (*func) (void *data, Ecore_Fd_Handler *fd_handler); void *data; Eina_Bool (*buf_func) (void *data, Ecore_Fd_Handler *fd_handler); void *buf_data; void (*prep_func) (void *data, Ecore_Fd_Handler *fd_handler); 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; Eina_Bool (*func) (void *data, Ecore_Win32_Handler *win32_handler); void *data; int references; Eina_Bool delete_me : 1; }; #endif static int _ecore_main_select(double timeout); 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); static void _ecore_main_loop_iterate_internal(int once_only); #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 int (*main_loop_select)(int , fd_set *, fd_set *, fd_set *, struct timeval *) = _ecore_main_win32_select; #else static int (*main_loop_select)(int , fd_set *, fd_set *, fd_set *, struct timeval *) = select; #endif static double t1 = 0.0; static double t2 = 0.0; #ifdef HAVE_EPOLL static int epoll_fd = -1; #endif void _ecore_main_loop_init(void) { #ifdef HAVE_EPOLL epoll_fd = epoll_create(1); if (epoll_fd < 0) CRIT("Failed to create epoll fd!"); #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; 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; INF("removing poll on %d", fdh->fd); /* could get an EBADF if somebody closed the FD before removing it */ if (0 > epoll_ctl(epoll_fd, EPOLL_CTL_DEL, fdh->fd, &ev) && 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; 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) { const int num_epoll_fds = 10; struct epoll_event ev[num_epoll_fds]; int i, ret; ret = epoll_wait(epoll_fd, ev, num_epoll_fds, 0); if (ret < 0) { if (errno == EINTR) return -1; ERR("epoll_wait failed %d", errno); return -1; } for (i=0; idelete_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 0; } #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) { _ecore_main_loop_iterate_internal(1); } /** * 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) { in_main_loop++; while (do_quit == 0) _ecore_main_loop_iterate_internal(0); do_quit = 0; in_main_loop--; } /** * 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) { do_quit = 1; } /** * 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(int (*func) (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)) { 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, Eina_Bool (*func) (void *data, Ecore_Fd_Handler *fd_handler), const void *data, Eina_Bool (*buf_func) (void *buf_data, Ecore_Fd_Handler *fd_handler), 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!", fd); 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, Eina_Bool (*func) (void *data, Ecore_Win32_Handler *wh), 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__, Eina_Bool (*func) (void *data, Ecore_Win32_Handler *wh) __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 */ 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, void (*func) (void *data, Ecore_Fd_Handler *fd_handler), 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 int _ecore_main_select(double timeout) { struct timeval tv, *t; fd_set rfds, wfds, exfds; int max_fd; int ret; Ecore_Fd_Handler *fdh; 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 */ #ifndef HAVE_EPOLL EINA_INLIST_FOREACH(fd_handlers, fdh) { if (!fdh->delete_me && fdh->prep_func) { fdh->references++; fdh->prep_func (fdh->prep_data, fdh); fdh->references--; } } 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 */ 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; } 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--; } #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 == NULL) 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