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ircd::db: Add support #ifdefs for MultiGet; add fallback path.

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This commit is contained in:
Jason Volk 2020-06-11 12:34:47 -07:00
parent 5593ae3a60
commit afcb22b726
2 changed files with 25 additions and 1 deletions
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14
ircd/db.cc
View file

@ -8117,9 +8117,17 @@ ircd::db::_read(const vector_view<_read_op> &op,
};
rocksdb::Status status[num];
#ifdef IRCD_DB_HAS_MULTIGET_BATCHED
_seek(op, {status, num}, {val, num}, ropts);
#else
for(size_t i(0); i < num; ++i)
{
database::column &column(std::get<0>(op[i]));
status[i] = _seek(column, val[i], std::get<1>(op[i]), ropts);
}
#endif
if(closure) for(size_t i(0); i < op.size(); ++i)
if(closure) for(size_t i(0); i < num; ++i)
{
const column::delta &delta
{
@ -8136,6 +8144,7 @@ ircd::db::_read(const vector_view<_read_op> &op,
return true;
}
#ifdef IRCD_DB_HAS_MULTIGET_BATCHED
void
ircd::db::_seek(const vector_view<_read_op> &op,
const vector_view<rocksdb::Status> &ret,
@ -8192,6 +8201,9 @@ ircd::db::_seek(const vector_view<_read_op> &op,
};
#endif
}
#else
#warning "RocksDB version does not support batched MultiGet; some queries will be linearized"
#endif IRCD_DB_HAS_MULTIGET_BATCHED
//
// iterator seek suite

12
ircd/db_has.h
View file

@ -31,6 +31,12 @@
#define IRCD_DB_HAS_PERIODIC_COMPACTIONS
#endif
#if ROCKSDB_MAJOR > 6 \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 2) \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 2 && ROCKSDB_PATCH >= 2)
#define IRCD_DB_HAS_MULTIGET_SINGLE
#endif
#if ROCKSDB_MAJOR > 6 \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 3) \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 3 && ROCKSDB_PATCH >= 6)
@ -49,6 +55,12 @@
#define IRCD_DB_HAS_CACHE_GETCHARGE
#endif
#if ROCKSDB_MAJOR > 6 \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 6) \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 6 && ROCKSDB_PATCH >= 3)
#define IRCD_DB_HAS_MULTIGET_BATCHED
#endif
#if ROCKSDB_MAJOR > 6 \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 7) \
|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 7 && ROCKSDB_PATCH >= 3)