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Diffstat (limited to 'ncurses-5.3/ncurses/tty/lib_twait.c')
-rw-r--r--ncurses-5.3/ncurses/tty/lib_twait.c440
1 files changed, 0 insertions, 440 deletions
diff --git a/ncurses-5.3/ncurses/tty/lib_twait.c b/ncurses-5.3/ncurses/tty/lib_twait.c
deleted file mode 100644
index 459adbe..0000000
--- a/ncurses-5.3/ncurses/tty/lib_twait.c
+++ /dev/null
@@ -1,440 +0,0 @@
-/****************************************************************************
- * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
- * *
- * Permission is hereby granted, free of charge, to any person obtaining a *
- * copy of this software and associated documentation files (the *
- * "Software"), to deal in the Software without restriction, including *
- * without limitation the rights to use, copy, modify, merge, publish, *
- * distribute, distribute with modifications, sublicense, and/or sell *
- * copies of the Software, and to permit persons to whom the Software is *
- * furnished to do so, subject to the following conditions: *
- * *
- * The above copyright notice and this permission notice shall be included *
- * in all copies or substantial portions of the Software. *
- * *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
- * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
- * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
- * *
- * Except as contained in this notice, the name(s) of the above copyright *
- * holders shall not be used in advertising or otherwise to promote the *
- * sale, use or other dealings in this Software without prior written *
- * authorization. *
- ****************************************************************************/
-
-/****************************************************************************
- * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
- * and: Eric S. Raymond <esr@snark.thyrsus.com> *
- ****************************************************************************/
-
-/*
-** lib_twait.c
-**
-** The routine _nc_timed_wait().
-**
-** (This file was originally written by Eric Raymond; however except for
-** comments, none of the original code remains - T.Dickey).
-*/
-
-#include <curses.priv.h>
-
-#ifdef __BEOS__
-#undef false
-#undef true
-#include <OS.h>
-#endif
-
-#if USE_FUNC_POLL
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# endif
-#elif HAVE_SELECT
-# if HAVE_SYS_TIME_H && HAVE_SYS_TIME_SELECT
-# include <sys/time.h>
-# endif
-# if HAVE_SYS_SELECT_H
-# include <sys/select.h>
-# endif
-#endif
-
-MODULE_ID("$Id$")
-
-static long
-_nc_gettime(bool first)
-{
- long res;
-
-#if HAVE_GETTIMEOFDAY
-# define PRECISE_GETTIME 1
- static struct timeval t0;
- struct timeval t1;
- gettimeofday(&t1, (struct timezone *) 0);
- if (first) {
- t0 = t1;
- }
- res = (t1.tv_sec - t0.tv_sec) * 1000
- + (t1.tv_usec - t0.tv_usec) / 1000;
-#else
-# define PRECISE_GETTIME 0
- static time_t t0;
- time_t t1 = time((time_t *) 0);
- if (first) {
- t0 = t1;
- }
- res = (t1 - t0) * 1000;
-#endif
- TR(TRACE_IEVENT, ("%s time: %ld msec", first ? "get" : "elapsed", res));
- return res;
-}
-
-#ifdef NCURSES_WGETCH_EVENTS
-NCURSES_EXPORT(int)
-_nc_eventlist_timeout(_nc_eventlist * evl)
-{
- _nc_event **ev, **last;
- int event_delay = -1;
-
- if (evl != 0) {
-
- ev = evl->events;
- last = ev + evl->count;
-
- while (ev < last) {
- if ((*ev)->type == _NC_EVENT_TIMEOUT_MSEC) {
- event_delay = (*ev)->data.timeout_msec;
- if (event_delay < 0)
- event_delay = LONG_MAX; /* FIXME Is this defined? */
- }
- }
- }
- return event_delay;
-}
-#endif /* NCURSES_WGETCH_EVENTS */
-
-/*
- * Wait a specified number of milliseconds, returning nonzero if the timer
- * didn't expire before there is activity on the specified file descriptors.
- * The file-descriptors are specified by the mode:
- * 0 - none (absolute time)
- * 1 - ncurses' normal input-descriptor
- * 2 - mouse descriptor, if any
- * 3 - either input or mouse.
- *
- * Experimental: if NCURSES_WGETCH_EVENTS is defined, (mode & 4) determines
- * whether to pay attention to evl argument. If set, the smallest of
- * millisecond and of timeout of evl is taken.
- *
- * We return a mask that corresponds to the mode (e.g., 2 for mouse activity).
- *
- * If the milliseconds given are -1, the wait blocks until activity on the
- * descriptors.
- */
-NCURSES_EXPORT(int)
-_nc_timed_wait(int mode,
- int milliseconds,
- int *timeleft
- EVENTLIST_2nd(_nc_eventlist * evl))
-{
- int fd;
- int count;
- int result;
-
-#ifdef NCURSES_WGETCH_EVENTS
- int timeout_is_event = 0;
-#endif
-
-#if USE_FUNC_POLL
- struct pollfd fd_list[2];
- struct pollfd *fds = fd_list;
-#elif defined(__BEOS__)
-#elif HAVE_SELECT
- static fd_set set;
-#endif
-
- long starttime, returntime;
-
- TR(TRACE_IEVENT, ("start twait: %d milliseconds, mode: %d",
- milliseconds, mode));
-
-#ifdef NCURSES_WGETCH_EVENTS
- if (mode & 4) {
- int event_delay = _nc_eventlist_timeout(evl);
-
- if (event_delay >= 0
- && (milliseconds >= event_delay || milliseconds < 0)) {
- milliseconds = event_delay;
- timeout_is_event = 1;
- }
- }
-#endif
-
-#if PRECISE_GETTIME
- retry:
-#endif
- starttime = _nc_gettime(TRUE);
-
- count = 0;
-
-#ifdef NCURSES_WGETCH_EVENTS
- if ((mode & 4) && evl)
- evl->result_flags = 0;
-#endif
-
-#if USE_FUNC_POLL
- memset(fd_list, 0, sizeof(fd_list));
-
-#ifdef NCURSES_WGETCH_EVENTS
- if ((mode & 4) && evl)
- fds = typeMalloc(struct pollfd, 2 + evl->count);
-#endif
-
- if (mode & 1) {
- fds[count].fd = SP->_ifd;
- fds[count].events = POLLIN;
- count++;
- }
- if ((mode & 2)
- && (fd = SP->_mouse_fd) >= 0) {
- fds[count].fd = fd;
- fds[count].events = POLLIN;
- count++;
- }
-#ifdef NCURSES_WGETCH_EVENTS
- if ((mode & 4) && evl) {
- _nc_event **ev = evl->events;
- _nc_event **last = ev + evl->count;
-
- while (ev < last) {
- if ((*ev)->type == _NC_EVENT_FILE
- && ((*ev)->data.fev.flags & _NC_EVENT_FILE_READABLE)) {
- fds[count].fd = (*ev)->data.fev.fd;
- fds[count].events = POLLIN;
- count++;
- }
- }
- }
-#endif
-
- result = poll(fds, count, milliseconds);
-
-#ifdef NCURSES_WGETCH_EVENTS
- if ((mode & 4) && evl) {
- _nc_event **ev = evl->events;
- _nc_event **last = ev + evl->count;
- int c;
-
- if (!result)
- count = 0;
- while (ev < last) {
- if ((*ev)->type == _NC_EVENT_FILE
- && ((*ev)->data.fev.flags & _NC_EVENT_FILE_READABLE)) {
- (*ev)->data.fev.result = 0;
- for (c = 0; c < count; c++)
- if (fds[c].fd == (*ev)->data.fev.fd
- && fds[c].revents & POLLIN) {
- (*ev)->data.fev.result |= _NC_EVENT_FILE_READABLE;
- evl->result_flags |= _NC_EVENT_FILE_READABLE;
- }
- } else if ((*ev)->type == _NC_EVENT_TIMEOUT_MSEC
- && !result && timeout_is_event) {
- evl->result_flags |= _NC_EVENT_TIMEOUT_MSEC;
- }
- }
- }
-
- if (fds != fd_list)
- free((char *) fds);
-
-#endif
-
-#elif defined(__BEOS__)
- /*
- * BeOS's select() is declared in socket.h, so the configure script does
- * not see it. That's just as well, since that function works only for
- * sockets. This (using snooze and ioctl) was distilled from Be's patch
- * for ncurses which uses a separate thread to simulate select().
- *
- * FIXME: the return values from the ioctl aren't very clear if we get
- * interrupted.
- *
- * FIXME: this assumes mode&1 if milliseconds < 0 (see lib_getch.c).
- */
- result = 0;
- if (mode & 1) {
- int step = (milliseconds < 0) ? 0 : 5000;
- bigtime_t d;
- bigtime_t useconds = milliseconds * 1000;
- int n, howmany;
-
- if (useconds <= 0) /* we're here to go _through_ the loop */
- useconds = 1;
-
- for (d = 0; d < useconds; d += step) {
- n = 0;
- howmany = ioctl(0, 'ichr', &n);
- if (howmany >= 0 && n > 0) {
- result = 1;
- break;
- }
- if (useconds > 1 && step > 0) {
- snooze(step);
- milliseconds -= (step / 1000);
- if (milliseconds <= 0) {
- milliseconds = 0;
- break;
- }
- }
- }
- } else if (milliseconds > 0) {
- snooze(milliseconds * 1000);
- milliseconds = 0;
- }
-#elif HAVE_SELECT
- /*
- * select() modifies the fd_set arguments; do this in the
- * loop.
- */
- FD_ZERO(&set);
-
- if (mode & 1) {
- FD_SET(SP->_ifd, &set);
- count = SP->_ifd + 1;
- }
- if ((mode & 2)
- && (fd = SP->_mouse_fd) >= 0) {
- FD_SET(fd, &set);
- count = max(fd, count) + 1;
- }
-#ifdef NCURSES_WGETCH_EVENTS
- if ((mode & 4) && evl) {
- _nc_event **ev = evl->events;
- _nc_event **last = ev + evl->count;
-
- while (ev < last) {
- if ((*ev)->type == _NC_EVENT_FILE
- && ((*ev)->data.fev.flags & _NC_EVENT_FILE_READABLE)) {
- FD_SET((*ev)->data.fev.fd, &set);
- count = max((*ev)->data.fev.fd + 1, count);
- }
- }
- }
-#endif
-
- if (milliseconds >= 0) {
- struct timeval ntimeout;
- ntimeout.tv_sec = milliseconds / 1000;
- ntimeout.tv_usec = (milliseconds % 1000) * 1000;
- result = select(count, &set, NULL, NULL, &ntimeout);
- } else {
- result = select(count, &set, NULL, NULL, NULL);
- }
-
-#ifdef NCURSES_WGETCH_EVENTS
- if ((mode & 4) && evl) {
- _nc_event **ev = evl->events;
- _nc_event **last = ev + evl->count;
-
- evl->result_flags = 0;
- while (ev < last) {
- if ((*ev)->type == _NC_EVENT_FILE
- && ((*ev)->data.fev.flags & _NC_EVENT_FILE_READABLE)) {
- (*ev)->data.fev.result = 0;
- if (FD_ISSET((*ev)->data.fev.fd, &set)) {
- (*ev)->data.fev.result |= _NC_EVENT_FILE_READABLE;
- evl->result_flags |= _NC_EVENT_FILE_READABLE;
- }
- } else if ((*ev)->type == _NC_EVENT_TIMEOUT_MSEC
- && !result && timeout_is_event)
- evl->result_flags |= _NC_EVENT_TIMEOUT_MSEC;
- }
- }
-#endif
-
-#endif /* USE_FUNC_POLL, etc */
-
- returntime = _nc_gettime(FALSE);
-
- if (milliseconds >= 0)
- milliseconds -= (returntime - starttime);
-
-#ifdef NCURSES_WGETCH_EVENTS
- if (evl) {
- _nc_event **ev = evl->events;
- _nc_event **last = ev + evl->count;
-
- evl->result_flags = 0;
- while (ev < last) {
- if ((*ev)->type == _NC_EVENT_TIMEOUT_MSEC) {
- long diff = (returntime - starttime);
- if ((*ev)->data.timeout_msec <= diff)
- (*ev)->data.timeout_msec = 0;
- else
- (*ev)->data.timeout_msec -= diff;
- }
-
- }
- }
-#endif
-
-#if PRECISE_GETTIME
- /*
- * If the timeout hasn't expired, and we've gotten no data,
- * this is probably a system where 'select()' needs to be left
- * alone so that it can complete. Make this process sleep,
- * then come back for more.
- */
- if (result == 0 && milliseconds > 100) {
- napms(100);
- milliseconds -= 100;
- goto retry;
- }
-#endif
-
- /* return approximate time left in milliseconds */
- if (timeleft)
- *timeleft = milliseconds;
-
- TR(TRACE_IEVENT, ("end twait: returned %d (%d), remaining time %d msec",
- result, errno, milliseconds));
-
- /*
- * Both 'poll()' and 'select()' return the number of file descriptors
- * that are active. Translate this back to the mask that denotes which
- * file-descriptors, so that we don't need all of this system-specific
- * code everywhere.
- */
- if (result != 0) {
- if (result > 0) {
- result = 0;
-#if USE_FUNC_POLL
- for (count = 0; count < 2; count++) {
- if ((mode & (1 << count))
- && (fds[count].revents & POLLIN)) {
- result |= (1 << count);
- }
- }
-#elif defined(__BEOS__)
- result = 1; /* redundant, but simple */
-#elif HAVE_SELECT
- if ((mode & 2)
- && (fd = SP->_mouse_fd) >= 0
- && FD_ISSET(fd, &set))
- result |= 2;
- if ((mode & 1)
- && FD_ISSET(SP->_ifd, &set))
- result |= 1;
-#endif
- } else
- result = 0;
- }
-#ifdef NCURSES_WGETCH_EVENTS
- if ((mode & 4) && evl && evl->result_flags)
- result |= 4;
-#endif
-
- return (result);
-}
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