mirror of
https://github.com/matrix-construct/construct
synced 2024-10-30 18:39:02 +01:00
169 lines
2.8 KiB
C++
169 lines
2.8 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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ircd::m::event::idx
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ircd::m::index(const event &event)
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try
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{
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return index(event.event_id);
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}
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catch(const json::not_found &)
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{
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throw m::NOT_FOUND
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{
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"Cannot find index for event without an event_id."
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};
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}
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ircd::m::event::idx
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ircd::m::index(std::nothrow_t,
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const event &event)
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{
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return index(std::nothrow, event.event_id);
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}
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ircd::m::event::idx
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ircd::m::index(const event::id &event_id)
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{
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assert(event_id);
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const auto ret
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{
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index(std::nothrow, event_id)
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};
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if(!ret)
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throw m::NOT_FOUND
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{
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"no index found for %s",
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string_view{event_id}
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};
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return ret;
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}
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ircd::m::event::idx
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ircd::m::index(std::nothrow_t,
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const event::id &event_id)
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{
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static auto &column
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{
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dbs::event_idx
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};
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bool found {false};
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event::idx ret {0};
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if(likely(event_id))
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{
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const mutable_buffer buf
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{
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reinterpret_cast<char *>(&ret), sizeof(ret)
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};
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const string_view val
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{
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read(column, event_id, found, buf)
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};
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}
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return ret & boolmask<event::idx>(found);
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}
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bool
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ircd::m::index(std::nothrow_t,
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const event::id &event_id,
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const event::closure_idx &closure)
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{
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auto &column
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{
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dbs::event_idx
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};
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return event_id && column(event_id, std::nothrow, [&closure]
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(const string_view &value)
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{
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const event::idx event_idx
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{
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byte_view<event::idx>(value)
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};
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closure(event_idx);
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});
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}
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size_t
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ircd::m::index(const vector_view<event::idx> &out_,
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const vector_view<const event::id> &in_)
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{
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static const size_t batch_max
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{
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64
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};
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const size_t max
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{
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std::min(out_.size(), in_.size())
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};
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auto &column
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{
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dbs::event_idx
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};
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size_t ret(0);
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for(size_t i(0); i < max; i += batch_max)
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{
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const size_t num
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{
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i + batch_max > max? max - i: batch_max
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};
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const vector_view<event::idx> out
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(
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out_.data() + i, num
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);
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const vector_view<const event::id> in
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(
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in_.data() + i, num
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);
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const vector_view<const string_view> keys
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(
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static_cast<const string_view *>(in.data()), in.size()
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);
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mutable_buffer buf[num];
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for(size_t j(0); j < num; ++j)
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{
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buf[j] = mutable_buffer
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{
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reinterpret_cast<char *>(out.data() + j),
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sizeof(out[j])
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};
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zero(buf[j]);
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}
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const vector_view<mutable_buffer> bufs
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(
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buf, num
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);
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const uint64_t found_mask
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{
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db::read(column, keys, bufs)
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};
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ret += __builtin_popcountl(found_mask);
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}
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return ret;
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}
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