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modules/client/sync/rooms/timeline: Add conditional prefetch on down iteration.

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This commit is contained in:
Jason Volk 2019-09-17 17:18:13 -07:00
parent a5a0adb2c5
commit c77353fd9c
1 changed files with 4 additions and 1 deletions
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5
modules/client/sync/rooms/timeline.cc
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@ -248,7 +248,6 @@ ircd::m::sync::_room_timeline_polylog_events(data &data,
room room
}; };
ssize_t i(0);
const ssize_t limit const ssize_t limit
{ {
data.phased && data.range.first == 0? data.phased && data.range.first == 0?
@ -256,6 +255,7 @@ ircd::m::sync::_room_timeline_polylog_events(data &data,
ssize_t(limit_default) ssize_t(limit_default)
}; };
ssize_t i(0), prefetched(0);
for(; it && i <= limit; --it) for(; it && i <= limit; --it)
{ {
event_idx = it.event_idx(); event_idx = it.event_idx();
@ -265,6 +265,9 @@ ircd::m::sync::_room_timeline_polylog_events(data &data,
if(event_idx < data.range.first) if(event_idx < data.range.first)
break; break;
if(limit > 1)
prefetched += m::prefetch(event_idx);
++i; ++i;
} }