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([RunLoop -acceptInputForMode:beforeDate:]): If LIMIT_DATE is nil,

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poll the inputs, but don't wait if there is nothing available
immediately.  Check to make sure that the LIMIT_DATE hasn't already
past; if it has, return immediately, before polling input sources.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1220 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Andrew McCallum 1996-03-19 17:10:41 +00:00
parent 9874e6ab48
commit a737a8e65f
1 changed files with 23 additions and 5 deletions
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28
Source/RunLoop.m
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@ -25,7 +25,6 @@
It is still in the early stages of development, and will most likely
evolve quite a bit more before the interface settles.
Distinguishing between different MODES is not currently implemented.
Handling NSTimers is implemented, but currently disabled.
Does it strike anyone else that NSNotificationCenter,
@ -239,7 +238,8 @@ static RunLoop *current_run_loop;
}
/* Listen to input sources */
/* Listen to input sources.
If LIMIT_DATE is nil, then don't wait; i.e. call select() with 0 timeout */
- (void) acceptInputForMode: (id <String>)mode
beforeDate: limit_date
@ -267,9 +267,17 @@ static RunLoop *current_run_loop;
#endif
/* Find out how much time we should wait, and set SELECT_TIMEOUT. */
if (limit_date
&& ((ti = [limit_date timeIntervalSinceNow]) < LONG_MAX))
if (!limit_date)
{
/* Don't wait at all. */
timeout.tv_sec = 0;
timeout.tv_usec = 0;
select_timeout = &timeout;
}
else if ((ti = [limit_date timeIntervalSinceNow]) < LONG_MAX
&& ti > 0.0)
{
/* Wait until the LIMIT_DATE. */
if (debug_run_loop)
printf ("\tRunLoop accept input before %f (seconds from now %f)\n",
[limit_date timeIntervalSinceReferenceDate], ti);
@ -280,13 +288,19 @@ static RunLoop *current_run_loop;
printf ("\tRunLoop limit date past, returning\n");
return;
}
timeout.tv_sec = ti;
timeout.tv_usec = ti * 1000000.0;
select_timeout = &timeout;
}
else if (ti <= 0.0)
{
/* The LIMIT_DATE has already past; return immediately without
polling any inputs. */
return;
}
else
{
/* Wait forever. */
if (debug_run_loop)
printf ("\tRunLoop accept input waiting forever\n");
select_timeout = NULL;
@ -401,6 +415,10 @@ static RunLoop *current_run_loop;
[self acceptInputForMode: mode
beforeDate: d];
/* xxx Is this where we detect if the RunLoop is idle, and whether
we should dispatch the notifications from NotificationQueue's
idle queue? */
return YES;
}