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// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package algod
import (
"fmt"
"testing"
"time"
"github.com/algorand/go-deadlock"
"github.com/algorand/go-algorand/crypto"
"github.com/algorand/go-algorand/logging"
"github.com/algorand/go-algorand/test/partitiontest"
)
func TestDeadlockLogging(t *testing.T) {
partitiontest.PartitionTest(t)
logFn := fmt.Sprintf("/tmp/test.%s.%d.log", t.Name(), crypto.RandUint64())
archiveFn := fmt.Sprintf("%s.archive", logFn)
l := logging.Base()
logWriter := logging.MakeCyclicFileWriter(logFn, archiveFn, 65536, time.Hour)
l.SetOutput(logWriter)
logger := setupDeadlockLogger()
deadlockCh := make(chan struct{})
logger.panic = func() {
close(deadlockCh)
}
var mu deadlock.RWMutex
defer func() {
r := recover()
if r != nil {
fmt.Printf("Recovered: %v\n", r)
}
}()
mu.RLock()
mu.RLock()
_ = <-deadlockCh
}
func TestDeadlockOnPotentialDeadlock(t *testing.T) {
partitiontest.PartitionTest(t)
logFn := fmt.Sprintf("/tmp/test.%s.%d.log", t.Name(), crypto.RandUint64())
archiveFn := fmt.Sprintf("%s.archive", logFn)
l := logging.Base()
logWriter := logging.MakeCyclicFileWriter(logFn, archiveFn, 65536, time.Hour)
l.SetOutput(logWriter)
logger := setupDeadlockLogger()
deadlockCh := make(chan struct{})
logger.panic = func() {
close(deadlockCh)
}
defer func() {
r := recover()
if r != nil {
fmt.Printf("Recovered: %v\n", r)
}
}()
for linenum := 0; linenum < 10; linenum++ {
fmt.Fprintf(logger, "line %d", linenum)
}
logger.onPotentialDeadlock()
for linenum := 10; linenum < 20; linenum++ {
fmt.Fprintf(logger, "line %d", linenum)
}
_ = <-deadlockCh
}
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