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ircd::db: Optimize make_opts w/ pre-construction and assumptions for noexcept copy.

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This commit is contained in:
Jason Volk 2023-02-16 15:39:01 -08:00
parent d48e6ccb8d
commit 36b85a5c78
2 changed files with 21 additions and 15 deletions
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32
ircd/db.cc
View file

@ -3784,7 +3784,8 @@ ircd::db::seek(column::const_iterator_base &it,
const pos &p)
{
database::column &c(it);
return seek(c, p, make_opts(it.opts), it.it);
const auto opts(make_opts(it.opts));
return seek(c, p, opts, it.it);
}
template bool ircd::db::seek<ircd::db::pos>(column::const_iterator_base &, const pos &);
template bool ircd::db::seek<ircd::string_view>(column::const_iterator_base &, const string_view &);
@ -4877,7 +4878,8 @@ ircd::db::seek(column &column,
database::column &c(column);
std::unique_ptr<rocksdb::Iterator> ret;
seek(c, key, make_opts(opts), ret);
const auto ropts(make_opts(opts));
seek(c, key, ropts, ret);
return ret;
}
@ -5317,19 +5319,22 @@ namespace ircd::db
[[gnu::hot]]
rocksdb::ReadOptions
ircd::db::make_opts(const gopts &opts)
noexcept
{
rocksdb::ReadOptions ret;
assume(ret.iterate_lower_bound == nullptr);
assume(ret.iterate_upper_bound == nullptr);
assume(ret.pin_data == false);
assume(ret.fill_cache == true);
assume(ret.total_order_seek == false);
assume(ret.verify_checksums == true);
assume(ret.tailing == false);
assume(ret.read_tier == rocksdb::ReadTier::kReadAllTier);
assume(ret.readahead_size == 0);
assume(ret.prefix_same_as_start == false);
const auto &def{default_read_options};
assume(def.iterate_lower_bound == nullptr);
assume(def.iterate_upper_bound == nullptr);
assume(def.pin_data == false);
assume(def.fill_cache == true);
assume(def.total_order_seek == false);
assume(def.verify_checksums == true);
assume(def.tailing == false);
assume(def.read_tier == rocksdb::ReadTier::kReadAllTier);
assume(def.readahead_size == 0);
assume(def.prefix_same_as_start == false);
assume(def.table_filter == nullptr);
rocksdb::ReadOptions ret{def};
ret.snapshot = opts.snapshot;
ret.readahead_size = opts.readahead;
@ -5374,6 +5379,7 @@ ircd::db::enable_wal
[[gnu::hot]]
rocksdb::WriteOptions
ircd::db::make_opts(const sopts &opts)
noexcept
{
rocksdb::WriteOptions ret;
ret.sync = opts.fsync;

4
ircd/db.h
View file

@ -97,8 +97,8 @@ namespace ircd::db
const std::string &reflect(const rocksdb::Histograms &);
// Frequently used get options and set options are separate from the string/map system
rocksdb::WriteOptions make_opts(const sopts &);
rocksdb::ReadOptions make_opts(const gopts &);
rocksdb::WriteOptions make_opts(const sopts &) noexcept;
rocksdb::ReadOptions make_opts(const gopts &) noexcept;
// Database options creator
static bool optstr_find_and_remove(std::string &optstr, const std::string &what);