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authorPeter Wemm <peter@FreeBSD.org>2000-10-11 07:31:01 +0000
committerPeter Wemm <peter@FreeBSD.org>2000-10-11 07:31:01 +0000
commit18259542b2f8fa7e3f76f4bb0dd37995dfd424aa (patch)
tree9ec00b41242bbe63b83c0ac5316c539466d9f9de /contrib/ncurses/ncurses/tty/lib_twait.c
parent15589c42fa2774d2f8ee650f4f31eb8d3a861316 (diff)
downloadsrc-18259542b2f8fa7e3f76f4bb0dd37995dfd424aa.tar.gz
src-18259542b2f8fa7e3f76f4bb0dd37995dfd424aa.zip
Import ncurses-5.1-20001009 onto the vendor branch
Notes
Notes: svn path=/vendor/ncurses/dist/; revision=66963
Diffstat (limited to 'contrib/ncurses/ncurses/tty/lib_twait.c')
-rw-r--r--contrib/ncurses/ncurses/tty/lib_twait.c284
1 files changed, 143 insertions, 141 deletions
diff --git a/contrib/ncurses/ncurses/tty/lib_twait.c b/contrib/ncurses/ncurses/tty/lib_twait.c
index a21e2a16db0f..6d24d8ddc6cb 100644
--- a/contrib/ncurses/ncurses/tty/lib_twait.c
+++ b/contrib/ncurses/ncurses/tty/lib_twait.c
@@ -59,33 +59,34 @@
# endif
#endif
-MODULE_ID("$Id: lib_twait.c,v 1.37 2000/06/29 23:03:09 tom Exp $")
+MODULE_ID("$Id: lib_twait.c,v 1.39 2000/08/26 19:34:15 tom Exp $")
-static long _nc_gettime(bool first)
+static long
+_nc_gettime(bool first)
{
- long res;
+ 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;
+ 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;
+ static time_t t0;
+ time_t t1 = time((time_t *) 0);
+ if (first) {
+ t0 = t1;
+ }
+ res = (t1 - t0) * 1000;
#endif
- T(("%s time: %ld msec", first ? "get" : "elapsed", res));
- return res;
+ T(("%s time: %ld msec", first ? "get" : "elapsed", res));
+ return res;
}
/*
@@ -101,163 +102,164 @@ static long _nc_gettime(bool first)
* If the milliseconds given are -1, the wait blocks until activity on the
* descriptors.
*/
-int _nc_timed_wait(int mode, int milliseconds, int *timeleft)
+int
+_nc_timed_wait(int mode, int milliseconds, int *timeleft)
{
-int fd;
-int count;
+ int fd;
+ int count;
-int result;
+ int result;
#if USE_FUNC_POLL
-struct pollfd fds[2];
+ struct pollfd fds[2];
#elif defined(__BEOS__)
#elif HAVE_SELECT
-static fd_set set;
+ static fd_set set;
#endif
-long starttime, returntime;
+ long starttime, returntime;
- T(("start twait: %d milliseconds, mode: %d", milliseconds, mode));
+ T(("start twait: %d milliseconds, mode: %d", milliseconds, mode));
#if PRECISE_GETTIME
-retry:
+ retry:
#endif
- starttime = _nc_gettime(TRUE);
+ starttime = _nc_gettime(TRUE);
- count = 0;
+ count = 0;
#if USE_FUNC_POLL
- 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++;
- }
- result = poll(fds, count, milliseconds);
+ memset(fds, 0, sizeof(fds));
+ 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++;
+ }
+ result = poll(fds, count, milliseconds);
#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.
- */
- result = 0;
- if (mode & 1) {
- bigtime_t d;
- bigtime_t useconds = milliseconds * 1000;
- int n, howmany;
+ /*
+ * 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.
+ */
+ result = 0;
+ if (mode & 1) {
+ bigtime_t d;
+ bigtime_t useconds = milliseconds * 1000;
+ int n, howmany;
- if (useconds == 0) /* we're here to go _through_ the loop */
- useconds = 1;
+ if (useconds == 0) /* we're here to go _through_ the loop */
+ useconds = 1;
- for (d = 0; d < useconds; d += 5000) {
- n = 0;
- howmany = ioctl(0, 'ichr', &n);
- if (howmany >= 0 && n > 0) {
- result = 1;
- break;
- }
- if (useconds > 1)
- snooze(5000);
- milliseconds -= 5;
- }
- } else if (milliseconds > 0) {
- snooze(milliseconds * 1000);
- milliseconds = 0;
+ for (d = 0; d < useconds; d += 5000) {
+ n = 0;
+ howmany = ioctl(0, 'ichr', &n);
+ if (howmany >= 0 && n > 0) {
+ result = 1;
+ break;
+ }
+ if (useconds > 1)
+ snooze(5000);
+ milliseconds -= 5;
}
+ } 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);
+ /*
+ * 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;
- }
+ 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;
+ }
- 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);
- }
+ 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);
+ }
#endif
- returntime = _nc_gettime(FALSE);
+ returntime = _nc_gettime(FALSE);
- if (milliseconds >= 0)
- milliseconds -= (returntime - starttime);
+ if (milliseconds >= 0)
+ milliseconds -= (returntime - starttime);
#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;
- }
+ /*
+ * 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;
+ /* return approximate time left in milliseconds */
+ if (timeleft)
+ *timeleft = milliseconds;
- T(("end twait: returned %d (%d), remaining time %d msec",
- result, errno, milliseconds));
+ T(("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;
+ /*
+ * 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);
- }
- }
+ 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 */
+ 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;
+ 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;
- }
+ } else
+ result = 0;
+ }
- return (result);
+ return (result);
}