roysc/plugeth
1
0
Fork 0
forked from cerc-io/plugeth
Code Pull Requests Activity

core/vm: expose intpool to stack dup method

Browse Source 
Improve the duplication method of the stack to reuse big ints by passing
in an existing integer pool.
This commit is contained in:
Jeffrey Wilcke 2017-05-23 10:52:11 +02:00
parent e16a7ef60f
commit 10582a97ca
2 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
core/vm/instructions.go
View File

@ -731,7 +731,7 @@ func makePush(size uint64, pushByteSize int) executionFunc {
// make push instruction function
func makeDup(size int64) executionFunc {
return func(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.dup(int(size))
stack.dup(evm.interpreter.intPool, int(size))
return nil, nil
}
}

4
core/vm/stack.go
View File

@ -60,8 +60,8 @@ func (st *Stack) swap(n int) {
st.data[st.len()-n], st.data[st.len()-1] = st.data[st.len()-1], st.data[st.len()-n]
}
func (st *Stack) dup(n int) {
st.push(new(big.Int).Set(st.data[st.len()-n]))
func (st *Stack) dup(pool *intPool, n int) {
st.push(pool.get().Set(st.data[st.len()-n]))
}
func (st *Stack) peek() *big.Int {