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Merge pull request #1638 from 0xProject/feature/sol-profiler-improvem…
…ents Sol profiler improvements
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| import { TraceInfo } from '@0x/sol-tracing-utils'; | ||
| import { logUtils } from '@0x/utils'; | ||
| import { OpCode } from 'ethereum-types'; | ||
| import { stripHexPrefix } from 'ethereumjs-util'; | ||
| import * as _ from 'lodash'; | ||
|
|
||
| const ZERO_BYTE_CALL_DATA_COST = 4; | ||
| const NON_ZERO_BYTE_CALL_DATA_COST = 68; | ||
| const WORD_SIZE = 32; | ||
| const G_MEMORY = 3; | ||
| const G_QUAD_COEF = 512; | ||
| const HEX_BASE = 16; | ||
| const G_COPY = 3; | ||
|
|
||
| export const costUtils = { | ||
| reportCallDataCost(traceInfo: TraceInfo): number { | ||
| if (_.isUndefined(traceInfo.dataIfExists)) { | ||
| // No call data to report | ||
| return 0; | ||
| } | ||
| const callData = traceInfo.dataIfExists; | ||
| const callDataBuf = Buffer.from(stripHexPrefix(callData), 'hex'); | ||
| const { true: zeroBytesCountIfExist, false: nonZeroBytesCountIfExist } = _.countBy( | ||
| callDataBuf, | ||
| byte => byte === 0, | ||
| ); | ||
| const zeroBytesCost = (zeroBytesCountIfExist || 0) * ZERO_BYTE_CALL_DATA_COST; | ||
| const nonZeroBytesCost = (nonZeroBytesCountIfExist || 0) * NON_ZERO_BYTE_CALL_DATA_COST; | ||
| const callDataCost = zeroBytesCost + nonZeroBytesCost; | ||
| logUtils.header('Call data breakdown', '-'); | ||
| logUtils.table({ | ||
| 'call data size (bytes)': callData.length, | ||
| callDataCost, | ||
| zeroBytesCost, | ||
| nonZeroBytesCost, | ||
| zeroBytesCountIfExist, | ||
| nonZeroBytesCountIfExist, | ||
| }); | ||
| return callDataCost; | ||
| }, | ||
| reportMemoryCost(traceInfo: TraceInfo): number { | ||
| const structLogs = traceInfo.trace.structLogs; | ||
| const MEMORY_OPCODES = [OpCode.MLoad, OpCode.MStore, OpCode.MStore8]; | ||
| const CALL_DATA_OPCODES = [OpCode.CallDataCopy]; | ||
| const memoryLogs = _.filter(structLogs, structLog => | ||
| _.includes([...MEMORY_OPCODES, ...CALL_DATA_OPCODES], structLog.op), | ||
| ); | ||
| const memoryLocationsAccessed = _.map(memoryLogs, structLog => { | ||
| if (_.includes(CALL_DATA_OPCODES, structLog.op)) { | ||
| const memOffset = parseInt(structLog.stack[0], HEX_BASE); | ||
| const length = parseInt(structLog.stack[2], HEX_BASE); | ||
| return memOffset + length; | ||
| } else { | ||
| return parseInt(structLog.stack[0], HEX_BASE); | ||
| } | ||
| }); | ||
| const highestMemoryLocationAccessed = _.max(memoryLocationsAccessed); | ||
| return costUtils._printMemoryCost(highestMemoryLocationAccessed); | ||
| }, | ||
| reportCopyingCost(traceInfo: TraceInfo): number { | ||
| const structLogs = traceInfo.trace.structLogs; | ||
| const COPY_OPCODES = [OpCode.CallDataCopy]; | ||
| const copyLogs = _.filter(structLogs, structLog => _.includes(COPY_OPCODES, structLog.op)); | ||
| const copyCosts = _.map(copyLogs, structLog => { | ||
| const length = parseInt(structLog.stack[2], HEX_BASE); | ||
| return Math.ceil(length / WORD_SIZE) * G_COPY; | ||
| }); | ||
| return _.sum(copyCosts); | ||
| }, | ||
| reportOpcodesCost(traceInfo: TraceInfo): number { | ||
| const structLogs = traceInfo.trace.structLogs; | ||
| const gasCosts = _.map(structLogs, structLog => structLog.gasCost); | ||
| const gasCost = _.sum(gasCosts); | ||
| return gasCost; | ||
| }, | ||
| _printMemoryCost(highestMemoryLocationAccessed?: number): number { | ||
| if (_.isUndefined(highestMemoryLocationAccessed)) { | ||
| return 0; | ||
| } | ||
| const memoryWordsUsed = Math.ceil((highestMemoryLocationAccessed + WORD_SIZE) / WORD_SIZE); | ||
| const linearMemoryCost = G_MEMORY * memoryWordsUsed; | ||
| const quadraticMemoryCost = Math.floor((memoryWordsUsed * memoryWordsUsed) / G_QUAD_COEF); | ||
| const memoryCost = linearMemoryCost + quadraticMemoryCost; | ||
| logUtils.header('Memory breakdown', '-'); | ||
| logUtils.table({ | ||
| 'memoryCost = linearMemoryCost + quadraticMemoryCost': memoryCost, | ||
| linearMemoryCost, | ||
| quadraticMemoryCost, | ||
| highestMemoryLocationAccessed, | ||
| memoryWordsUsed, | ||
| }); | ||
| return memoryCost; | ||
| }, | ||
| }; |
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