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ircd:Ⓜ️:index: Optimize call chain; branch reduction; indirect call elimination.

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This commit is contained in:
Jason Volk 2020-09-16 21:36:31 -07:00
parent a9c37908ec
commit 8ab735d002
1 changed files with 15 additions and 11 deletions
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26
matrix/event_index.cc
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@ -53,14 +53,21 @@ ircd::m::event::idx
ircd::m::index(std::nothrow_t, ircd::m::index(std::nothrow_t,
const event::id &event_id) const event::id &event_id)
{ {
event::idx ret{0}; auto &column
index(std::nothrow, event_id, [&ret]
(const event::idx &event_idx)
{ {
ret = event_idx; dbs::event_idx
}); };
return ret; bool found;
alignas(8) char buf[8] {0};
if(likely(event_id))
read(column, event_id, found, buf);
constexpr bool safety(false); // we know buf is the right size
return byte_view<event::idx, safety>
{
buf
};
} }
bool bool
@ -73,13 +80,10 @@ ircd::m::index(std::nothrow_t,
dbs::event_idx dbs::event_idx
}; };
if(!event_id) return event_id && column(event_id, std::nothrow, [&closure]
return false;
return column(event_id, std::nothrow, [&closure]
(const string_view &value) (const string_view &value)
{ {
const event::idx &event_idx const event::idx event_idx
{ {
byte_view<event::idx>(value) byte_view<event::idx>(value)
}; };