mirror of https://github.com/ethereum/go-ethereum
Jeffrey Wilcke
9 years ago
commit
5b34fa538e
@ -0,0 +1,143 @@ |
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package vm |
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|
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import "math/big" |
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|
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type jumpPtr struct { |
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fn instrFn |
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valid bool |
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} |
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|
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var jumpTable [256]jumpPtr |
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|
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func init() { |
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jumpTable[ADD] = jumpPtr{opAdd, true} |
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jumpTable[SUB] = jumpPtr{opSub, true} |
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jumpTable[MUL] = jumpPtr{opMul, true} |
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jumpTable[DIV] = jumpPtr{opDiv, true} |
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jumpTable[SDIV] = jumpPtr{opSdiv, true} |
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jumpTable[MOD] = jumpPtr{opMod, true} |
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jumpTable[SMOD] = jumpPtr{opSmod, true} |
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jumpTable[EXP] = jumpPtr{opExp, true} |
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jumpTable[SIGNEXTEND] = jumpPtr{opSignExtend, true} |
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jumpTable[NOT] = jumpPtr{opNot, true} |
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jumpTable[LT] = jumpPtr{opLt, true} |
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jumpTable[GT] = jumpPtr{opGt, true} |
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jumpTable[SLT] = jumpPtr{opSlt, true} |
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jumpTable[SGT] = jumpPtr{opSgt, true} |
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jumpTable[EQ] = jumpPtr{opEq, true} |
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jumpTable[ISZERO] = jumpPtr{opIszero, true} |
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jumpTable[AND] = jumpPtr{opAnd, true} |
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jumpTable[OR] = jumpPtr{opOr, true} |
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jumpTable[XOR] = jumpPtr{opXor, true} |
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jumpTable[BYTE] = jumpPtr{opByte, true} |
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jumpTable[ADDMOD] = jumpPtr{opAddmod, true} |
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jumpTable[MULMOD] = jumpPtr{opMulmod, true} |
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jumpTable[SHA3] = jumpPtr{opSha3, true} |
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jumpTable[ADDRESS] = jumpPtr{opAddress, true} |
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jumpTable[BALANCE] = jumpPtr{opBalance, true} |
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jumpTable[ORIGIN] = jumpPtr{opOrigin, true} |
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jumpTable[CALLER] = jumpPtr{opCaller, true} |
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jumpTable[CALLVALUE] = jumpPtr{opCallValue, true} |
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jumpTable[CALLDATALOAD] = jumpPtr{opCalldataLoad, true} |
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jumpTable[CALLDATASIZE] = jumpPtr{opCalldataSize, true} |
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jumpTable[CALLDATACOPY] = jumpPtr{opCalldataCopy, true} |
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jumpTable[CODESIZE] = jumpPtr{opCodeSize, true} |
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jumpTable[EXTCODESIZE] = jumpPtr{opExtCodeSize, true} |
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jumpTable[CODECOPY] = jumpPtr{opCodeCopy, true} |
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jumpTable[EXTCODECOPY] = jumpPtr{opExtCodeCopy, true} |
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jumpTable[GASPRICE] = jumpPtr{opGasprice, true} |
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jumpTable[BLOCKHASH] = jumpPtr{opBlockhash, true} |
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jumpTable[COINBASE] = jumpPtr{opCoinbase, true} |
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jumpTable[TIMESTAMP] = jumpPtr{opTimestamp, true} |
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jumpTable[NUMBER] = jumpPtr{opNumber, true} |
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jumpTable[DIFFICULTY] = jumpPtr{opDifficulty, true} |
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jumpTable[GASLIMIT] = jumpPtr{opGasLimit, true} |
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jumpTable[POP] = jumpPtr{opPop, true} |
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jumpTable[MLOAD] = jumpPtr{opMload, true} |
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jumpTable[MSTORE] = jumpPtr{opMstore, true} |
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jumpTable[MSTORE8] = jumpPtr{opMstore8, true} |
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jumpTable[SLOAD] = jumpPtr{opSload, true} |
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jumpTable[SSTORE] = jumpPtr{opSstore, true} |
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jumpTable[JUMPDEST] = jumpPtr{opJumpdest, true} |
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jumpTable[PC] = jumpPtr{nil, true} |
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jumpTable[MSIZE] = jumpPtr{opMsize, true} |
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jumpTable[GAS] = jumpPtr{opGas, true} |
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jumpTable[CREATE] = jumpPtr{opCreate, true} |
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jumpTable[CALL] = jumpPtr{opCall, true} |
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jumpTable[CALLCODE] = jumpPtr{opCallCode, true} |
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jumpTable[LOG0] = jumpPtr{makeLog(0), true} |
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jumpTable[LOG1] = jumpPtr{makeLog(1), true} |
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jumpTable[LOG2] = jumpPtr{makeLog(2), true} |
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jumpTable[LOG3] = jumpPtr{makeLog(3), true} |
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jumpTable[LOG4] = jumpPtr{makeLog(4), true} |
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jumpTable[SWAP1] = jumpPtr{makeSwap(1), true} |
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jumpTable[SWAP2] = jumpPtr{makeSwap(2), true} |
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jumpTable[SWAP3] = jumpPtr{makeSwap(3), true} |
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jumpTable[SWAP4] = jumpPtr{makeSwap(4), true} |
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jumpTable[SWAP5] = jumpPtr{makeSwap(5), true} |
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jumpTable[SWAP6] = jumpPtr{makeSwap(6), true} |
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jumpTable[SWAP7] = jumpPtr{makeSwap(7), true} |
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jumpTable[SWAP8] = jumpPtr{makeSwap(8), true} |
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jumpTable[SWAP9] = jumpPtr{makeSwap(9), true} |
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jumpTable[SWAP10] = jumpPtr{makeSwap(10), true} |
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jumpTable[SWAP11] = jumpPtr{makeSwap(11), true} |
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jumpTable[SWAP12] = jumpPtr{makeSwap(12), true} |
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jumpTable[SWAP13] = jumpPtr{makeSwap(13), true} |
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jumpTable[SWAP14] = jumpPtr{makeSwap(14), true} |
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jumpTable[SWAP15] = jumpPtr{makeSwap(15), true} |
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jumpTable[SWAP16] = jumpPtr{makeSwap(16), true} |
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jumpTable[PUSH1] = jumpPtr{makePush(1, big.NewInt(1)), true} |
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jumpTable[PUSH2] = jumpPtr{makePush(2, big.NewInt(2)), true} |
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jumpTable[PUSH3] = jumpPtr{makePush(3, big.NewInt(3)), true} |
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jumpTable[PUSH4] = jumpPtr{makePush(4, big.NewInt(4)), true} |
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jumpTable[PUSH5] = jumpPtr{makePush(5, big.NewInt(5)), true} |
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jumpTable[PUSH6] = jumpPtr{makePush(6, big.NewInt(6)), true} |
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jumpTable[PUSH7] = jumpPtr{makePush(7, big.NewInt(7)), true} |
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jumpTable[PUSH8] = jumpPtr{makePush(8, big.NewInt(8)), true} |
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jumpTable[PUSH9] = jumpPtr{makePush(9, big.NewInt(9)), true} |
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jumpTable[PUSH10] = jumpPtr{makePush(10, big.NewInt(10)), true} |
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jumpTable[PUSH11] = jumpPtr{makePush(11, big.NewInt(11)), true} |
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jumpTable[PUSH12] = jumpPtr{makePush(12, big.NewInt(12)), true} |
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jumpTable[PUSH13] = jumpPtr{makePush(13, big.NewInt(13)), true} |
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jumpTable[PUSH14] = jumpPtr{makePush(14, big.NewInt(14)), true} |
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jumpTable[PUSH15] = jumpPtr{makePush(15, big.NewInt(15)), true} |
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jumpTable[PUSH16] = jumpPtr{makePush(16, big.NewInt(16)), true} |
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jumpTable[PUSH17] = jumpPtr{makePush(17, big.NewInt(17)), true} |
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jumpTable[PUSH18] = jumpPtr{makePush(18, big.NewInt(18)), true} |
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jumpTable[PUSH19] = jumpPtr{makePush(19, big.NewInt(19)), true} |
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jumpTable[PUSH20] = jumpPtr{makePush(20, big.NewInt(20)), true} |
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jumpTable[PUSH21] = jumpPtr{makePush(21, big.NewInt(21)), true} |
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jumpTable[PUSH22] = jumpPtr{makePush(22, big.NewInt(22)), true} |
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jumpTable[PUSH23] = jumpPtr{makePush(23, big.NewInt(23)), true} |
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jumpTable[PUSH24] = jumpPtr{makePush(24, big.NewInt(24)), true} |
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jumpTable[PUSH25] = jumpPtr{makePush(25, big.NewInt(25)), true} |
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jumpTable[PUSH26] = jumpPtr{makePush(26, big.NewInt(26)), true} |
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jumpTable[PUSH27] = jumpPtr{makePush(27, big.NewInt(27)), true} |
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jumpTable[PUSH28] = jumpPtr{makePush(28, big.NewInt(28)), true} |
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jumpTable[PUSH29] = jumpPtr{makePush(29, big.NewInt(29)), true} |
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jumpTable[PUSH30] = jumpPtr{makePush(30, big.NewInt(30)), true} |
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jumpTable[PUSH31] = jumpPtr{makePush(31, big.NewInt(31)), true} |
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jumpTable[PUSH32] = jumpPtr{makePush(32, big.NewInt(32)), true} |
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jumpTable[DUP1] = jumpPtr{makeDup(1), true} |
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jumpTable[DUP2] = jumpPtr{makeDup(2), true} |
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jumpTable[DUP3] = jumpPtr{makeDup(3), true} |
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jumpTable[DUP4] = jumpPtr{makeDup(4), true} |
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jumpTable[DUP5] = jumpPtr{makeDup(5), true} |
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jumpTable[DUP6] = jumpPtr{makeDup(6), true} |
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jumpTable[DUP7] = jumpPtr{makeDup(7), true} |
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jumpTable[DUP8] = jumpPtr{makeDup(8), true} |
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jumpTable[DUP9] = jumpPtr{makeDup(9), true} |
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jumpTable[DUP10] = jumpPtr{makeDup(10), true} |
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jumpTable[DUP11] = jumpPtr{makeDup(11), true} |
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jumpTable[DUP12] = jumpPtr{makeDup(12), true} |
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jumpTable[DUP13] = jumpPtr{makeDup(13), true} |
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jumpTable[DUP14] = jumpPtr{makeDup(14), true} |
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jumpTable[DUP15] = jumpPtr{makeDup(15), true} |
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jumpTable[DUP16] = jumpPtr{makeDup(16), true} |
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|
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jumpTable[RETURN] = jumpPtr{nil, true} |
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jumpTable[SUICIDE] = jumpPtr{nil, true} |
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jumpTable[JUMP] = jumpPtr{nil, true} |
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jumpTable[JUMPI] = jumpPtr{nil, true} |
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jumpTable[STOP] = jumpPtr{nil, true} |
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} |
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@ -0,0 +1,133 @@ |
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// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
|
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// the Free Software Foundation, either version 3 of the License, or
|
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
|
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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// GNU Lesser General Public License for more details.
|
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//
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// You should have received a copy of the GNU Lesser General Public License
|
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// package filters implements an ethereum filtering system for block,
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// transactions and log events.
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package filters |
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import ( |
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"sync" |
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"github.com/ethereum/go-ethereum/core" |
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"github.com/ethereum/go-ethereum/core/vm" |
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"github.com/ethereum/go-ethereum/event" |
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) |
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// FilterSystem manages filters that filter specific events such as
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// block, transaction and log events. The Filtering system can be used to listen
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// for specific LOG events fired by the EVM (Ethereum Virtual Machine).
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type FilterSystem struct { |
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eventMux *event.TypeMux |
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filterMu sync.RWMutex |
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filterId int |
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filters map[int]*Filter |
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quit chan struct{} |
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} |
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// NewFilterSystem returns a newly allocated filter manager
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func NewFilterSystem(mux *event.TypeMux) *FilterSystem { |
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fs := &FilterSystem{ |
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eventMux: mux, |
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filters: make(map[int]*Filter), |
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} |
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go fs.filterLoop() |
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return fs |
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} |
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// Stop quits the filter loop required for polling events
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func (fs *FilterSystem) Stop() { |
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close(fs.quit) |
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} |
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// Add adds a filter to the filter manager
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func (fs *FilterSystem) Add(filter *Filter) (id int) { |
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fs.filterMu.Lock() |
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defer fs.filterMu.Unlock() |
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id = fs.filterId |
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fs.filters[id] = filter |
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fs.filterId++ |
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return id |
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} |
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// Remove removes a filter by filter id
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func (fs *FilterSystem) Remove(id int) { |
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fs.filterMu.Lock() |
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defer fs.filterMu.Unlock() |
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if _, ok := fs.filters[id]; ok { |
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delete(fs.filters, id) |
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} |
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} |
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// Get retrieves a filter installed using Add The filter may not be modified.
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func (fs *FilterSystem) Get(id int) *Filter { |
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fs.filterMu.RLock() |
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defer fs.filterMu.RUnlock() |
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return fs.filters[id] |
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} |
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// filterLoop waits for specific events from ethereum and fires their handlers
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// when the filter matches the requirements.
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func (fs *FilterSystem) filterLoop() { |
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// Subscribe to events
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events := fs.eventMux.Subscribe( |
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//core.PendingBlockEvent{},
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core.ChainEvent{}, |
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core.TxPreEvent{}, |
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vm.Logs(nil)) |
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out: |
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for { |
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select { |
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case <-fs.quit: |
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break out |
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case event := <-events.Chan(): |
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switch event := event.(type) { |
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case core.ChainEvent: |
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fs.filterMu.RLock() |
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for _, filter := range fs.filters { |
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if filter.BlockCallback != nil { |
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filter.BlockCallback(event.Block, event.Logs) |
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} |
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} |
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fs.filterMu.RUnlock() |
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case core.TxPreEvent: |
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fs.filterMu.RLock() |
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for _, filter := range fs.filters { |
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if filter.TransactionCallback != nil { |
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filter.TransactionCallback(event.Tx) |
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} |
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} |
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fs.filterMu.RUnlock() |
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case vm.Logs: |
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fs.filterMu.RLock() |
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for _, filter := range fs.filters { |
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if filter.LogsCallback != nil { |
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msgs := filter.FilterLogs(event) |
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if len(msgs) > 0 { |
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filter.LogsCallback(msgs) |
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} |
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} |
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} |
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fs.filterMu.RUnlock() |
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} |
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} |
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} |
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} |
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@ -1,127 +0,0 @@ |
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// Copyright 2014 The go-ethereum Authors
|
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// This file is part of the go-ethereum library.
|
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//
|
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// The go-ethereum library is free software: you can redistribute it and/or modify
|
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// it under the terms of the GNU Lesser General Public License as published by
|
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// the Free Software Foundation, either version 3 of the License, or
|
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// (at your option) any later version.
|
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//
|
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// The go-ethereum library is distributed in the hope that it will be useful,
|
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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// GNU Lesser General Public License for more details.
|
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//
|
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// You should have received a copy of the GNU Lesser General Public License
|
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
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|
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package filter |
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|
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// TODO make use of the generic filtering system
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|
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import ( |
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"sync" |
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|
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"github.com/ethereum/go-ethereum/core" |
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"github.com/ethereum/go-ethereum/core/state" |
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"github.com/ethereum/go-ethereum/event" |
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) |
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|
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type FilterManager struct { |
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eventMux *event.TypeMux |
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filterMu sync.RWMutex |
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filterId int |
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filters map[int]*core.Filter |
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|
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quit chan struct{} |
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} |
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|
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func NewFilterManager(mux *event.TypeMux) *FilterManager { |
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return &FilterManager{ |
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eventMux: mux, |
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filters: make(map[int]*core.Filter), |
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} |
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} |
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func (self *FilterManager) Start() { |
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go self.filterLoop() |
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} |
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func (self *FilterManager) Stop() { |
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close(self.quit) |
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} |
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func (self *FilterManager) InstallFilter(filter *core.Filter) (id int) { |
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self.filterMu.Lock() |
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defer self.filterMu.Unlock() |
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id = self.filterId |
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self.filters[id] = filter |
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self.filterId++ |
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return id |
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} |
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|
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func (self *FilterManager) UninstallFilter(id int) { |
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self.filterMu.Lock() |
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defer self.filterMu.Unlock() |
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if _, ok := self.filters[id]; ok { |
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delete(self.filters, id) |
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} |
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} |
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|
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// GetFilter retrieves a filter installed using InstallFilter.
|
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// The filter may not be modified.
|
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func (self *FilterManager) GetFilter(id int) *core.Filter { |
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self.filterMu.RLock() |
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defer self.filterMu.RUnlock() |
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return self.filters[id] |
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} |
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|
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func (self *FilterManager) filterLoop() { |
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// Subscribe to events
|
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events := self.eventMux.Subscribe( |
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//core.PendingBlockEvent{},
|
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core.ChainEvent{}, |
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core.TxPreEvent{}, |
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state.Logs(nil)) |
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|
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out: |
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for { |
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select { |
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case <-self.quit: |
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break out |
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case event := <-events.Chan(): |
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switch event := event.(type) { |
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case core.ChainEvent: |
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self.filterMu.RLock() |
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for _, filter := range self.filters { |
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if filter.BlockCallback != nil { |
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filter.BlockCallback(event.Block, event.Logs) |
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} |
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} |
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self.filterMu.RUnlock() |
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|
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case core.TxPreEvent: |
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self.filterMu.RLock() |
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for _, filter := range self.filters { |
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if filter.TransactionCallback != nil { |
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filter.TransactionCallback(event.Tx) |
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} |
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} |
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self.filterMu.RUnlock() |
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|
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case state.Logs: |
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self.filterMu.RLock() |
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for _, filter := range self.filters { |
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if filter.LogsCallback != nil { |
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msgs := filter.FilterLogs(event) |
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if len(msgs) > 0 { |
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filter.LogsCallback(msgs) |
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} |
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} |
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} |
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self.filterMu.RUnlock() |
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} |
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} |
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} |
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} |
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Loading…
Reference in new issue