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lmdb-safe
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Improve error handling when calling `mdb_env_set_mapsize`/`mdb_env_set_maxdbs` 

* Handle all errors
* Include error string in exception
This commit is contained in:
Martchus 2022-01-16 19:59:01 +01:00
parent ef0bbb4462
commit 97fab01b15
1 changed files with 7 additions and 7 deletions
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14
lmdb-safe.cc
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@ -28,13 +28,13 @@ MDBDbi::MDBDbi(MDB_env* env, MDB_txn* txn, const string_view dbname, unsigned in
MDBEnv::MDBEnv(const char* fname, unsigned int flags, mdb_mode_t mode)
{
mdb_env_create(&d_env);
if(mdb_env_set_mapsize(d_env, 16ULL*4096*244140ULL)) // 4GB
throw std::runtime_error("setting map size");
/*
Various other options may also need to be set before opening the handle, e.g. mdb_env_set_mapsize(), mdb_env_set_maxreaders(), mdb_env_set_maxdbs(),
*/
mdb_env_set_maxdbs(d_env, 128);
if(const auto rc = mdb_env_set_mapsize(d_env, 16ULL * 4096 * 244140ULL)) { // 4GB
throw std::runtime_error("setting map size: " + MDBError(rc));
}
// Various other options may also need to be set before opening the handle, e.g. mdb_env_set_mapsize(), mdb_env_set_maxreaders(), mdb_env_set_maxdbs(),
if (const auto rc = mdb_env_set_maxdbs(d_env, 128)) {
throw std::runtime_error("setting maxdbs: " + MDBError(rc));
}
// we need MDB_NOTLS since we rely on its semantics
if(int rc=mdb_env_open(d_env, fname, flags | MDB_NOTLS, mode)) {