Commit Graph

30 Commits

Author SHA1 Message Date
Felix Lange
5c8fe28b72 common: move big integer math to common/math (#3699)
* common: remove CurrencyToString

Move denomination values to params instead.

* common: delete dead code

* common: move big integer operations to common/math

This commit consolidates all big integer operations into common/math and
adds tests and documentation.

There should be no change in semantics for BigPow, BigMin, BigMax, S256,
U256, Exp and their behaviour is now locked in by tests.

The BigD, BytesToBig and Bytes2Big functions don't provide additional
value, all uses are replaced by new(big.Int).SetBytes().

BigToBytes is now called PaddedBigBytes, its minimum output size
parameter is now specified as the number of bytes instead of bits. The
single use of this function is in the EVM's MSTORE instruction.

Big and String2Big are replaced by ParseBig, which is slightly stricter.
It previously accepted leading zeros for hexadecimal inputs but treated
decimal inputs as octal if a leading zero digit was present.

ParseUint64 is used in places where String2Big was used to decode a
uint64.

The new functions MustParseBig and MustParseUint64 are now used in many
places where parsing errors were previously ignored.

* common: delete unused big integer variables

* accounts/abi: replace uses of BytesToBig with use of encoding/binary

* common: remove BytesToBig

* common: remove Bytes2Big

* common: remove BigTrue

* cmd/utils: add BigFlag and use it for error-checked integer flags

While here, remove environment variable processing for DirectoryFlag
because we don't use it.

* core: add missing error checks in genesis block parser

* common: remove String2Big

* cmd/evm: use utils.BigFlag

* common/math: check for 256 bit overflow in ParseBig

This is supposed to prevent silent overflow/truncation of values in the
genesis block JSON. Without this check, a genesis block that set a
balance larger than 256 bits would lead to weird behaviour in the VM.

* cmd/utils: fixup import
2017-02-26 22:21:51 +01:00
Jeffrey Wilcke
c12f4df910 params: core, core/vm, miner: 64bit gas instructions
Reworked the EVM gas instructions to use 64bit integers rather than
arbitrary size big ints. All gas operations, be it additions,
multiplications or divisions, are checked and guarded against 64 bit
integer overflows.

In additon, most of the protocol paramaters in the params package have
been converted to uint64 and are now constants rather than variables.

* common/math: added overflow check ops
* core: vmenv, env renamed to evm
* eth, internal/ethapi, les: unmetered eth_call and cancel methods
* core/vm: implemented big.Int pool for evm instructions
* core/vm: unexported intPool methods & verification methods
* core/vm: added memoryGasCost overflow check and test
2017-02-13 21:44:25 +01:00
Jeffrey Wilcke
57f4e90257 Revert "params: core, core/vm, miner: 64bit gas instructions (#3514)"
This reverts commit 8b57c49490.
2017-02-13 15:15:12 +01:00
Jeffrey Wilcke
8b57c49490 params: core, core/vm, miner: 64bit gas instructions (#3514)
Reworked the EVM gas instructions to use 64bit integers rather than
arbitrary size big ints. All gas operations, be it additions,
multiplications or divisions, are checked and guarded against 64 bit
integer overflows.

In additon, most of the protocol paramaters in the params package have
been converted to uint64 and are now constants rather than variables.

* common/math: added overflow check ops
* core: vmenv, env renamed to evm
* eth, internal/ethapi, les: unmetered eth_call and cancel methods
* core/vm: implemented big.Int pool for evm instructions
* core/vm: unexported intPool methods & verification methods
* core/vm: added memoryGasCost overflow check and test
2017-02-02 15:25:42 +01:00
Nick Johnson
17d92233d9 cmd/geth, core: add support for recording SHA3 preimages (#3543) 2017-01-17 12:19:50 +01:00
Felix Lange
e171bf74f8 core/types: remove redundant SignECDSA wrappers, rename to SignTx 2017-01-05 12:59:17 +01:00
Jeffrey Wilcke
4dca5d4db7 core/types, params: EIP#155 2016-11-13 14:55:30 +01:00
Jeffrey Wilcke
445feaeef5 core, core/state, trie: EIP158, reprice & skip empty account write
This commit implements EIP158 part 1, 2, 3 & 4

1. If an account is empty it's no longer written to the trie. An empty
  account is defined as (balance=0, nonce=0, storage=0, code=0).
2. Delete an empty account if it's touched
3. An empty account is redefined as either non-existent or empty.
4. Zero value calls and zero value suicides no longer consume the 25k
  reation costs.

params: moved core/config to params

Signed-off-by: Jeffrey Wilcke <jeffrey@ethereum.org>
2016-11-13 10:44:04 +01:00
Péter Szilágyi
3291235711 accounts, core, eth: pass chain config for chain maker to test DAO 2016-07-15 16:52:55 +03:00
zsfelfoldi
f9917c8c7b core: improved chainDb using sequential keys 2016-06-07 16:38:56 +02:00
zsfelfoldi
5a458da42a core: chain read/write speed benchmarks 2016-06-06 14:38:28 +02:00
Jeffrey Wilcke
f0cbebb19f core: added basic chain configuration
Added chain configuration options and write out during genesis database
insertion. If no "config" was found, nothing is written to the database.

Configurations are written on a per genesis base. This means
that any chain (which is identified by it's genesis hash) can have their
own chain settings.
2016-04-01 01:01:10 +02:00
Péter Szilágyi
e90958cd29 cmd, eth, ethdb, node: prioritise chaindata for resources, bump cache 2016-03-09 10:33:39 +02:00
Gustav Simonsson
371871d685 parmas, crypto, core, core/vm: homestead consensus protocol changes
* change gas cost for contract creating txs
* invalidate signature with s value greater than secp256k1 N / 2
* OOG contract creation if not enough gas to store code
* new difficulty adjustment algorithm
* new DELEGATECALL op code
2016-02-18 10:08:11 +01:00
Jeffrey Wilcke
a1d9ef48c5 core, eth, rpc: split out block validator and state processor
This removes the burden on a single object to take care of all
validation and state processing. Now instead the validation is done by
the `core.BlockValidator` (`types.Validator`) that takes care of both
header and uncle validation through the `ValidateBlock` method and state
validation through the `ValidateState` method. The state processing is
done by a new object `core.StateProcessor` (`types.Processor`) and
accepts a new state as input and uses that to process the given block's
transactions (and uncles for rewords) to calculate the state root for
the next block (P_n + 1).
2015-11-18 14:24:42 +01:00
Péter Szilágyi
832b37c822 core, eth: receipt chain reconstruction 2015-10-19 10:03:09 +03:00
Jeffrey Wilcke
7c7692933c cmd/geth, cmd/utils, core, rpc: renamed to blockchain
* Renamed ChainManager to BlockChain
* Checkpointing is no longer required and never really properly worked
when the state was corrupted.
2015-10-04 01:13:56 +02:00
Jeffrey Wilcke
eaa4473dbd core, core/types: readd transactions after chain re-org
Added a `Difference` method to `types.Transactions` which sets the
receiver to the difference of a to b (NOTE: not a **and** b).

Transaction pool subscribes to RemovedTransactionEvent adding back to
those potential missing from the chain.

When a chain re-org occurs remove any transactions that were removed
from the canonical chain during the re-org as well as the receipts that
were generated in the process.

Closes #1746
2015-09-21 20:33:28 +02:00
Felix Lange
8c4dab77ba all: move common.Database to package ethdb 2015-09-14 23:36:30 +02:00
Jeffrey Wilcke
a23478c0be core, eth, trie, xeth: merged state, chain, extra databases in one 2015-08-07 22:29:02 +02:00
Jeffrey Wilcke
1fad8798ec Merge pull request #1515 from fjl/license-fixes
all: fix license headers one more time
2015-07-28 04:29:42 -07:00
Felix Lange
bfbcfbe4a9 all: fix license headers one more time
I forgot to update one instance of "go-ethereum" in commit 3f047be5a.
2015-07-23 18:35:11 +02:00
Jeffrey Wilcke
0cff61beda Merge pull request #1510 from fjl/license-fixes
all: license fixes
2015-07-23 01:43:11 -07:00
Felix Lange
3f047be5aa all: update license headers to distiguish GPL/LGPL
All code outside of cmd/ is licensed as LGPL. The headers
now reflect this by calling the whole work "the go-ethereum library".
2015-07-22 18:51:45 +02:00
Péter Szilágyi
c7e7778f2a cmd, core, eth, ethdb: cache flag to allocate memory for db internal use 2015-07-22 14:00:52 +03:00
Jeffrey Wilcke
a32c51effd cmd, core, eth, common: genesis preparation
Implemented the --genesis flag thru which we can set a custom genesis
block, including the official Ethereum genesis block.
2015-07-10 17:37:41 +02:00
Felix Lange
ea54283b30 all: update license information 2015-07-07 14:12:44 +02:00
Jeffrey Wilcke
29e2fb38f8 core, miner: miner header validation, transaction & receipt writing
* Miners do now verify their own header, not their state.
* Changed old putTx and putReceipts to be exported
* Moved writing of transactions and receipts out of the block processer
  in to the chain manager. Closes #1386
* Miner post ChainHeadEvent & ChainEvent. Closes #1388
2015-07-03 13:56:50 +02:00
Felix Lange
d0bb90c69e core: generate benchmark keys only once 2015-06-29 18:51:48 +02:00
Felix Lange
c3d6228023 core: add InsertChain benchmarks 2015-06-29 18:51:47 +02:00