debian-packages/eventcore
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Introduce TimerCallback2.

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This allows getting notified also if the timer has been stopped, so that it is guaranteed to be called, except if cancelWait is called.

Necessary for fixing vibe-d/vibe-core#86
This commit is contained in:
Sönke Ludwig 2018-10-27 12:33:10 +02:00
parent 42f96060c9
commit dbb8267540
3 changed files with 33 additions and 6 deletions
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16
source/eventcore/drivers/timer.d
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@ -79,7 +79,7 @@ final class LoopTimeoutTimerDriver : EventDriverTimers {
foreach (tm; processed_timers) {
auto cb = tm.callback;
tm.callback = null;
if (cb) cb(tm.id);
if (cb) cb(tm.id, true);
}
return processed_timers.length > 0;
@ -91,8 +91,8 @@ final class LoopTimeoutTimerDriver : EventDriverTimers {
TimerSlot* tm;
try tm = ms_allocator.make!TimerSlot;
catch (Exception e) return TimerID.invalid;
GC.addRange(tm, TimerSlot.sizeof, typeid(TimerSlot));
assert(tm !is null);
GC.addRange(tm, TimerSlot.sizeof, typeid(TimerSlot));
tm.id = id;
tm.refCount = 1;
tm.timeout = long.max;
@ -113,8 +113,13 @@ final class LoopTimeoutTimerDriver : EventDriverTimers {
final override void stop(TimerID timer)
@trusted {
import std.algorithm.mutation : swap;
auto tm = m_timers[timer];
if (!tm.pending) return;
TimerCallback2 cb;
swap(cb, tm.callback);
if (cb) cb(timer, false);
tm.pending = false;
m_timerQueue.remove(tm);
}
@ -129,11 +134,12 @@ final class LoopTimeoutTimerDriver : EventDriverTimers {
return m_timers[descriptor].repeatDuration > 0;
}
final override void wait(TimerID timer, TimerCallback callback)
final override void wait(TimerID timer, TimerCallback2 callback)
{
assert(!m_timers[timer].callback, "Calling wait() no a timer that is already waiting.");
assert(!m_timers[timer].callback, "Calling wait() on a timer that is already waiting.");
m_timers[timer].callback = callback;
}
alias wait = EventDriverTimers.wait;
final override void cancelWait(TimerID timer)
{
@ -214,7 +220,7 @@ struct TimerSlot {
bool pending;
long timeout; // stdtime
long repeatDuration;
TimerCallback callback; // TODO: use a list with small-value optimization
TimerCallback2 callback; // TODO: use a list with small-value optimization
DataInitializer userDataDestructor;
ubyte[16*size_t.sizeof] userData;