From bb6115b737a05e3b8bf70ff2ad74c703589627cb Mon Sep 17 00:00:00 2001 From: Yoichi Hirai Date: Fri, 30 Sep 2016 12:22:42 +0200 Subject: vm, ethapi: add `limit` option to traceTransaction that specifies the maximum number of elements in the `structLogs` output. This option is useful for debugging a transaction that involves a large number of repetition. For example, ``` debug.traceTransaction(tx, {disableStorage: true, limit: 2}) ``` shows at most the first two steps in the `structLogs`. --- internal/ethapi/tracer.go | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'internal') diff --git a/internal/ethapi/tracer.go b/internal/ethapi/tracer.go index 16ec6ebf0..c6d4f814e 100644 --- a/internal/ethapi/tracer.go +++ b/internal/ethapi/tracer.go @@ -278,7 +278,7 @@ func wrapError(context string, err error) error { } // CaptureState implements the Tracer interface to trace a single step of VM execution -func (jst *JavascriptTracer) CaptureState(env vm.Environment, pc uint64, op vm.OpCode, gas, cost *big.Int, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) { +func (jst *JavascriptTracer) CaptureState(env vm.Environment, pc uint64, op vm.OpCode, gas, cost *big.Int, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error { if jst.err == nil { jst.memory.memory = memory jst.stack.stack = stack @@ -301,6 +301,7 @@ func (jst *JavascriptTracer) CaptureState(env vm.Environment, pc uint64, op vm.O jst.err = wrapError("step", err) } } + return nil } // GetResult calls the Javascript 'result' function and returns its value, or any accumulated error -- cgit