lotus/chain/stmgr/execute.go

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package stmgr
import (
"context"
"fmt"
"github.com/ipfs/go-cid"
"go.opencensus.io/trace"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/chain/types"
)
func (sm *StateManager) TipSetState(ctx context.Context, ts *types.TipSet) (st cid.Cid, rec cid.Cid, err error) {
ctx, span := trace.StartSpan(ctx, "tipSetState")
defer span.End()
if span.IsRecordingEvents() {
span.AddAttributes(trace.StringAttribute("tipset", fmt.Sprint(ts.Cids())))
}
ck := cidsToKey(ts.Cids())
sm.stlk.Lock()
cw, cwok := sm.compWait[ck]
if cwok {
sm.stlk.Unlock()
span.AddAttributes(trace.BoolAttribute("waited", true))
select {
case <-cw:
sm.stlk.Lock()
case <-ctx.Done():
return cid.Undef, cid.Undef, ctx.Err()
}
}
cached, ok := sm.stCache[ck]
if ok {
sm.stlk.Unlock()
span.AddAttributes(trace.BoolAttribute("cache", true))
return cached[0], cached[1], nil
}
ch := make(chan struct{})
sm.compWait[ck] = ch
defer func() {
sm.stlk.Lock()
delete(sm.compWait, ck)
if st != cid.Undef {
sm.stCache[ck] = []cid.Cid{st, rec}
}
sm.stlk.Unlock()
close(ch)
}()
sm.stlk.Unlock()
if ts.Height() == 0 {
// NB: This is here because the process that executes blocks requires that the
// block miner reference a valid miner in the state tree. Unless we create some
// magical genesis miner, this won't work properly, so we short circuit here
// This avoids the question of 'who gets paid the genesis block reward'
return ts.Blocks()[0].ParentStateRoot, ts.Blocks()[0].ParentMessageReceipts, nil
}
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st, rec, err = sm.tsExec.ExecuteTipSet(ctx, sm, ts, sm.tsExecMonitor)
if err != nil {
return cid.Undef, cid.Undef, err
}
return st, rec, nil
}
func (sm *StateManager) ExecutionTraceWithMonitor(ctx context.Context, ts *types.TipSet, em ExecMonitor) (cid.Cid, error) {
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st, _, err := sm.tsExec.ExecuteTipSet(ctx, sm, ts, em)
return st, err
}
func (sm *StateManager) ExecutionTrace(ctx context.Context, ts *types.TipSet) (cid.Cid, []*api.InvocResult, error) {
var invocTrace []*api.InvocResult
st, err := sm.ExecutionTraceWithMonitor(ctx, ts, &InvocationTracer{trace: &invocTrace})
if err != nil {
return cid.Undef, nil, err
}
return st, invocTrace, nil
}