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core/vm, internal/ethapi: tracer no full storage, nicer json output (#15499)

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* core/vm, internal/ethapi: tracer no full storage, nicer json output

* core/vm, internal/ethapi: omit disabled trace fields
This commit is contained in:
Péter Szilágyi
2017-11-16 18:53:18 +02:00
committed by GitHub
parent 87f5b4123c
commit b0190189a3
3 changed files with 36 additions and 71 deletions
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26
core/vm/logger.go
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@ -45,7 +45,6 @@ type LogConfig struct {
DisableMemory bool // disable memory capture
DisableStack bool // disable stack capture
DisableStorage bool // disable storage capture
FullStorage bool // show full storage (slow)
Limit int // maximum length of output, but zero means unlimited
}
@ -136,14 +135,13 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost ui
)
l.changedValues[contract.Address()][address] = value
}
// copy a snapstot of the current memory state to a new buffer
// Copy a snapstot of the current memory state to a new buffer
var mem []byte
if !l.cfg.DisableMemory {
mem = make([]byte, len(memory.Data()))
copy(mem, memory.Data())
}
// copy a snapshot of the current stack state to a new buffer
// Copy a snapshot of the current stack state to a new buffer
var stck []*big.Int
if !l.cfg.DisableStack {
stck = make([]*big.Int, len(stack.Data()))
@ -151,26 +149,10 @@ func (l *StructLogger) CaptureState(env *EVM, pc uint64, op OpCode, gas, cost ui
stck[i] = new(big.Int).Set(item)
}
}
// Copy the storage based on the settings specified in the log config. If full storage
// is disabled (default) we can use the simple Storage.Copy method, otherwise we use
// the state object to query for all values (slow process).
// Copy a snapshot of the current storage to a new container
var storage Storage
if !l.cfg.DisableStorage {
if l.cfg.FullStorage {
storage = make(Storage)
// Get the contract account and loop over each storage entry. This may involve looping over
// the trie and is a very expensive process.
env.StateDB.ForEachStorage(contract.Address(), func(key, value common.Hash) bool {
storage[key] = value
// Return true, indicating we'd like to continue.
return true
})
} else {
// copy a snapshot of the current storage to a new container.
storage = l.changedValues[contract.Address()].Copy()
}
storage = l.changedValues[contract.Address()].Copy()
}
// create a new snaptshot of the EVM.
log := StructLog{pc, op, gas, cost, mem, memory.Len(), stck, storage, depth, err}