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authorFelix Lange <fjl@twurst.com>2016-10-04 18:36:02 +0800
committerFelix Lange <fjl@twurst.com>2016-10-06 21:32:16 +0800
commit1f1ea18b5414bea22332bb4fce53cc95b5c6a07d (patch)
treed1aa3051f9c4d9f33a24519c18b70f0dd2f00644 /eth
parentab7adb0027dbcf09cf75a533be356c1e24c46c90 (diff)
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core/state: implement reverts by journaling all changes
This commit replaces the deep-copy based state revert mechanism with a linear complexity journal. This commit also hides several internal StateDB methods to limit the number of ways in which calling code can use the journal incorrectly. As usual consultation and bug fixes to the initial implementation were provided by @karalabe, @obscuren and @Arachnid. Thank you!
Diffstat (limited to 'eth')
-rw-r--r--eth/api_backend.go6
1 files changed, 3 insertions, 3 deletions
diff --git a/eth/api_backend.go b/eth/api_backend.go
index 4adeb0aa0..42b84bf9b 100644
--- a/eth/api_backend.go
+++ b/eth/api_backend.go
@@ -98,12 +98,12 @@ func (b *EthApiBackend) GetTd(blockHash common.Hash) *big.Int {
}
func (b *EthApiBackend) GetVMEnv(ctx context.Context, msg core.Message, state ethapi.State, header *types.Header) (vm.Environment, func() error, error) {
- stateDb := state.(EthApiState).state.Copy()
+ statedb := state.(EthApiState).state
addr, _ := msg.From()
- from := stateDb.GetOrNewStateObject(addr)
+ from := statedb.GetOrNewStateObject(addr)
from.SetBalance(common.MaxBig)
vmError := func() error { return nil }
- return core.NewEnv(stateDb, b.eth.chainConfig, b.eth.blockchain, msg, header, b.eth.chainConfig.VmConfig), vmError, nil
+ return core.NewEnv(statedb, b.eth.chainConfig, b.eth.blockchain, msg, header, b.eth.chainConfig.VmConfig), vmError, nil
}
func (b *EthApiBackend) SendTx(ctx context.Context, signedTx *types.Transaction) error {