// blockByNumber is a commonly used helper function which retrieves and returns the block for the given block number. It
// returns nil when no block could be found.
func blockByNumber(m *miner.Miner, bc *core.BlockChain, blockNr rpc.BlockNumber) *types.Block {
if blockNr == rpc.PendingBlockNumber {
return m.PendingBlock()
}
if blockNr == rpc.LatestBlockNumber {
return bc.CurrentBlock()
}
return bc.GetBlockByNumber(uint64(blockNr))
}
func (self *GasPriceOracle) processPastBlocks(chain *core.BlockChain) {
last := int64(-1)
cblock := chain.CurrentBlock()
if cblock != nil {
last = int64(cblock.NumberU64())
}
first := int64(0)
if last > gpoProcessPastBlocks {
first = last - gpoProcessPastBlocks
}
self.firstProcessed = uint64(first)
for i := first; i <= last; i++ {
block := chain.GetBlockByNumber(uint64(i))
if block != nil {
self.processBlock(block)
}
}
}
