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Clean up database environment size resizing code.

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clemahieu 2017-04-09 18:58:38 -05:00
commit eae2e6d073
1 changed files with 6 additions and 5 deletions
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11
rai/utility.cpp
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@ -113,9 +113,11 @@ void rai::mdb_env::handle_environment_sizing ()
mdb_env_stat (environment, &stats);
MDB_envinfo info;
mdb_env_info (environment, &info);
size_t load (info.me_last_pgno * stats.ms_psize);
auto slack (info.me_mapsize - load);
if (slack < (rai::database_size_increment / 4))
double used_space (info.me_last_pgno * stats.ms_psize);
double needed_space (used_space * 1.25);
size_t increments_needed ((needed_space / database_size_increment) + 1);
size_t environment_size (increments_needed * database_size_increment);
if (info.me_mapsize < environment_size)
{
if (!resizing.exchange (true))
{
@ -124,8 +126,7 @@ void rai::mdb_env::handle_environment_sizing ()
{
open_notify.wait (lock_l);
}
auto next_size (((info.me_mapsize / database_size_increment) + 1) * database_size_increment);
mdb_env_set_mapsize (environment, next_size);
mdb_env_set_mapsize (environment, environment_size);
resizing = false;
resize_notify.notify_all ();
}