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Limited ethapi.DoCall() #457

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7 changes: 7 additions & 0 deletions ethapi/api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ import (
"github.com/Fantom-foundation/go-opera/opera"
"github.com/Fantom-foundation/go-opera/utils/adapters/ethdb2kvdb"
"github.com/Fantom-foundation/go-opera/utils/dbutil/compactdb"
"github.com/Fantom-foundation/go-opera/utils/dbutil/threads"
"github.com/Fantom-foundation/go-opera/utils/signers/gsignercache"
"github.com/Fantom-foundation/go-opera/utils/signers/internaltx"
)
Expand Down Expand Up @@ -948,6 +949,12 @@ func (diff *StateOverride) Apply(state *state.StateDB) error {
}

func DoCall(ctx context.Context, b Backend, args TransactionArgs, blockNrOrHash rpc.BlockNumberOrHash, overrides *StateOverride, timeout time.Duration, globalGasCap uint64) (*evmcore.ExecutionResult, error) {
got, release := threads.GlobalPool.Lock(1)
defer release(got)
if got < 1 {
return nil, errors.New("Thread exhaustion. Try later.")
}

defer func(start time.Time) { log.Debug("Executing EVM call finished", "runtime", time.Since(start)) }(time.Now())

state, header, err := b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
Expand Down