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LMDB: retry mdb_env_open() on memory allocation failure #1614
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何かの値から計算できる方がよいのだが、見つからないため暫定で対策する。 |
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#1580
mdb_env_open()で反映されるmdb_env_open()は失敗すると内部でフラグを立て、再度実行してもエラーを返すようになるmdb_env_close()で閉じるよって今回は、
mdb_env_open()がENOMEMで失敗する場合に限り、allocationするサイズを減らしながら成功するサイズを見つけるようにする。下げすぎないよう、retry countで下限を付ける(0x4000_0000)。