void
Freeze::handleDbException(const DbException& dx,
Key& key, Dbt& dbKey,
const char* file, int line)
{
bool bufferSmallException =
#if (DB_VERSION_MAJOR == 4) && (DB_VERSION_MINOR == 2)
(dx.get_errno() == ENOMEM);
#else
(dx.get_errno() == DB_BUFFER_SMALL || dx.get_errno() == ENOMEM);
#endif
if(bufferSmallException && (dbKey.get_size() > dbKey.get_ulen()))
{
//
// Keep the old key size in case it's used as input
//
size_t oldKeySize = key.size();
key.resize(dbKey.get_size());
initializeOutDbt(key, dbKey);
dbKey.set_size(static_cast<u_int32_t>(oldKeySize));
}
else
{
handleDbException(dx, file, line);
}
}
void
Freeze::handleDbException(const DbException& dx,
Key& key, Dbt& dbKey,
Value& value, Dbt& dbValue,
const char* file, int line)
{
bool bufferSmallException =
#if (DB_VERSION_MAJOR == 4) && (DB_VERSION_MINOR == 2)
(dx.get_errno() == ENOMEM);
#else
(dx.get_errno() == DB_BUFFER_SMALL || dx.get_errno() == ENOMEM);
#endif
bool resized = false;
if(bufferSmallException)
{
if(dbKey.get_size() > dbKey.get_ulen())
{
size_t oldKeySize = key.size();
key.resize(dbKey.get_size());
initializeOutDbt(key, dbKey);
dbKey.set_size(static_cast<u_int32_t>(oldKeySize));
resized = true;
}
if(dbValue.get_size() > dbValue.get_ulen())
{
value.resize(dbValue.get_size());
initializeOutDbt(value, dbValue);
resized = true;
}
}
if(!resized)
{
handleDbException(dx, file, line);
}
}
void test_dbt(void) {
u_int32_t size = 3;
u_int32_t flags = 5;
u_int32_t ulen = 7;
void* data = &size;
Dbt dbt;
dbt.set_size(size);
dbt.set_flags(flags);
dbt.set_data(data);
dbt.set_ulen(ulen);
assert(dbt.get_size() == size);
assert(dbt.get_flags() == flags);
assert(dbt.get_data() == data);
assert(dbt.get_ulen() == ulen);
}
DbMultipleIterator::DbMultipleIterator(const Dbt &dbt)
: data_((u_int8_t*)dbt.get_data()),
p_((u_int32_t*)(data_ + dbt.get_ulen() - sizeof(u_int32_t)))
{
}
