public static Env GetEnv(DB_ENV *evp)
{
if (evp == null)
{
return(null);
}
else
{
IntPtr gh = evp->api_internal;
if (gh == IntPtr.Zero)
{
return(null);
}
else
{
return((Env)((GCHandle)gh).Target);
}
}
}
public Env(EnvCreateFlags flags): this() {
DbRetVal ret;
lock (rscLock) {
RuntimeHelpers.PrepareConstrainedRegions();
try { }
finally {
DB_ENV* evp;
ret = LibDb.db_env_create(out evp, flags);
if (ret == DbRetVal.SUCCESS) {
this.evp = evp;
evp->api_internal = (IntPtr)instanceHandle;
}
}
}
Util.CheckRetVal(ret);
}
void Disposed() {
evp = null;
}
// called when creating wrapper for private (internal) environment of DB;
// call must be synchronized on rscLock; db.Evp must be != null, not checked;
internal void SetOwnerDatabase(Db db) {
evp = db.GetEvp();
databases.Insert(db);
isOwnedByDb = true;
// so that callbacks can refer back to the DbEnv instance
instanceHandle = GCHandle.Alloc(this, GCHandleType.WeakTrackResurrection);
evp->api_internal = (IntPtr)instanceHandle;
}
