How to use SequentialResourcePool method of main Package

Best Syzkaller code snippet using main.SequentialResourcePool

manager.go

Source:manager.go Github

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...282 maxReproVMs := vmCount - mgr.cfg.FuzzingVMs283 if instancesPerRepro > maxReproVMs && maxReproVMs > 0 {284 instancesPerRepro = maxReproVMs285 }286 instances := SequentialResourcePool(vmCount, 10*time.Second*mgr.cfg.Timeouts.Scale)287 runDone := make(chan *RunResult, 1)288 pendingRepro := make(map[*Crash]bool)289 reproducing := make(map[string]bool)290 var reproQueue []*Crash // 保存crash291 reproDone := make(chan *ReproResult, 1)292 stopPending := false293 shutdown := vm.Shutdown294 for shutdown != nil || instances.Len() != vmCount {295 mgr.mu.Lock()296 phase := mgr.phase297 mgr.mu.Unlock()298 for crash := range pendingRepro {299 if reproducing[crash.Title] {300 continue301 }302 delete(pendingRepro, crash)303 if !mgr.needRepro(crash) {304 continue305 }306 log.Logf(1, "loop: add to repro queue '%v'", crash.Title)307 reproducing[crash.Title] = true308 reproQueue = append(reproQueue, crash)309 }310 log.Logf(1, "loop: phase=%v shutdown=%v instances=%v/%v %+v repro: pending=%v reproducing=%v queued=%v",311 phase, shutdown == nil, instances.Len(), vmCount, instances.Snapshot(),312 len(pendingRepro), len(reproducing), len(reproQueue))313 // 判断当前是否有等待复现的crash314 canRepro := func() bool {315 return phase >= phaseTriagedHub && len(reproQueue) != 0 &&316 (int(atomic.LoadUint32(&mgr.numReproducing))+1)*instancesPerRepro <= maxReproVMs317 }318 if shutdown != nil {319 for canRepro() { // 可以复现且有剩余的instance，则进行复现工作320 vmIndexes := instances.Take(instancesPerRepro)321 if vmIndexes == nil {322 break323 }324 last := len(reproQueue) - 1325 crash := reproQueue[last]326 reproQueue[last] = nil327 reproQueue = reproQueue[:last]328 atomic.AddUint32(&mgr.numReproducing, 1)329 log.Logf(1, "loop: starting repro of '%v' on instances %+v", crash.Title, vmIndexes)330 go func() {331 reproDone <- mgr.runRepro(crash, vmIndexes, instances.Put)332 }()333 }334 for !canRepro() { // 没有可复现的但是有剩余的instance，则进行fuzz335 idx := instances.TakeOne()336 if idx == nil {337 break338 }339 log.Logf(1, "loop: starting instance %v", *idx)340 go func() {341 crash, err := mgr.runInstance(*idx)342 runDone <- &RunResult{*idx, crash, err}343 }()344 }345 }346 var stopRequest chan bool347 if !stopPending && canRepro() {348 stopRequest = mgr.vmStop349 }350 wait:351 select {352 case <-instances.Freed:353 // An instance has been released.354 case stopRequest <- true:355 log.Logf(1, "loop: issued stop request")356 stopPending = true357 case res := <-runDone:358 log.Logf(1, "loop: instance %v finished, crash=%v", res.idx, res.crash != nil)359 if res.err != nil && shutdown != nil {360 log.Logf(0, "%v", res.err)361 }362 stopPending = false363 instances.Put(res.idx)364 // On shutdown qemu crashes with "qemu: terminating on signal 2",365 // which we detect as "lost connection". Don't save that as crash.366 if shutdown != nil && res.crash != nil {367 needRepro := mgr.saveCrash(res.crash)368 if needRepro {369 log.Logf(1, "loop: add pending repro for '%v'", res.crash.Title)370 pendingRepro[res.crash] = true371 }372 }373 case res := <-reproDone:374 atomic.AddUint32(&mgr.numReproducing, ^uint32(0))375 crepro := false376 title := ""377 if res.repro != nil {378 crepro = res.repro.CRepro379 title = res.repro.Report.Title380 }381 log.Logf(1, "loop: repro on %+v finished '%v', repro=%v crepro=%v desc='%v'",382 res.instances, res.report0.Title, res.repro != nil, crepro, title)383 if res.err != nil {384 log.Logf(0, "repro failed: %v", res.err)385 }386 delete(reproducing, res.report0.Title)387 if res.repro == nil {388 if !res.hub {389 mgr.saveFailedRepro(res.report0, res.stats)390 }391 } else {392 mgr.saveRepro(res)393 }394 case <-shutdown:395 log.Logf(1, "loop: shutting down...")396 shutdown = nil397 case crash := <-mgr.hubReproQueue:398 log.Logf(1, "loop: get repro from hub")399 pendingRepro[crash] = true400 case reply := <-mgr.needMoreRepros:401 reply <- phase >= phaseTriagedHub &&402 len(reproQueue)+len(pendingRepro)+len(reproducing) == 0403 goto wait404 case reply := <-mgr.reproRequest:405 repros := make(map[string]bool)406 for title := range reproducing {407 repros[title] = true408 }409 reply <- repros410 goto wait411 }412 }413}414func (mgr *Manager) runRepro(crash *Crash, vmIndexes []int, putInstances func(...int)) *ReproResult {415 features := mgr.checkResult.Features416 res, stats, err := repro.Run(crash.Output, mgr.cfg, features, mgr.reporter, mgr.vmPool, vmIndexes)417 ret := &ReproResult{418 instances: vmIndexes,419 report0: crash.Report,420 repro: res,421 stats: stats,422 err: err,423 hub: crash.hub,424 }425 if err == nil && res != nil && mgr.cfg.StraceBin != "" {426 // We need only one instance to get strace output, release the rest.427 putInstances(vmIndexes[1:]...)428 defer putInstances(vmIndexes[0])429 const straceAttempts = 2430 for i := 1; i <= straceAttempts; i++ {431 strace := repro.RunStrace(res, mgr.cfg, mgr.reporter, mgr.vmPool, vmIndexes[0])432 sameBug := strace.IsSameBug(res)433 log.Logf(0, "strace run attempt %d/%d for '%s': same bug %v, error %v",434 i, straceAttempts, res.Report.Title, sameBug, strace.Error)435 // We only want to save strace output if it resulted in the same bug.436 // Otherwise, it will be hard to reproduce on syzbot and will confuse users.437 if sameBug {438 ret.strace = strace439 break440 }441 }442 } else {443 putInstances(vmIndexes...)444 }445 return ret446}447type ResourcePool struct {448 ids []int449 mu sync.RWMutex450 Freed chan interface{}451}452func SequentialResourcePool(count int, delay time.Duration) *ResourcePool {453 ret := &ResourcePool{Freed: make(chan interface{}, 1)}454 go func() {455 for i := 0; i < count; i++ {456 ret.Put(i)457 time.Sleep(delay)458 }459 }()460 return ret461}462func (pool *ResourcePool) Put(ids ...int) {463 pool.mu.Lock()464 defer pool.mu.Unlock()465 pool.ids = append(pool.ids, ids...)466 // Notify the listener....

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SequentialResourcePool

Using AI Code Generation

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1import (2func main() {3 app := iris.New()4 app.Get("/", func(ctx iris.Context) {5 ctx.HTML("Hello World!")6 })7 app.Run(iris.Addr(":8080"))8}9import (10func main() {11 app := iris.New()12 app.Get("/", func(ctx iris.Context) {13 ctx.HTML("Hello World!")14 })15 app.Run(iris.Addr(":8080"))16}17import (18func main() {19 app := iris.New()20 app.Get("/", func(ctx iris.Context) {21 ctx.HTML("Hello World!")22 })23 app.Run(iris.Addr(":8080"))24}25import (26func main() {27 app := iris.New()28 app.Get("/", func(ctx iris.Context) {29 ctx.HTML("Hello World!")30 })31 app.Run(iris.Addr(":8080"))32}33import (34func main() {35 app := iris.New()36 app.Get("/", func(ctx iris.Context) {37 ctx.HTML("Hello World!")38 })39 app.Run(iris.Addr(":8080"))40}41import (42func main() {43 app := iris.New()44 app.Get("/", func(ctx iris.Context) {45 ctx.HTML("Hello World!")46 })47 app.Run(iris.Addr(":8080"))48}49import (50func main() {

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SequentialResourcePool

Using AI Code Generation

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1import (2func main() {3 runtime.GOMAXPROCS(2)4 pool := NewResourcePool(2)5 for i := 0; i < 4; i++ {6 go func(jobId int) {7 resource, err := pool.Acquire()8 if err == nil {9 fmt.Println("Job", jobId, "started")10 time.Sleep(1 * time.Second)11 fmt.Println("Job", jobId, "finished")12 pool.Release(resource)13 } else {14 fmt.Println("Job", jobId, "failed to acquire resource")15 }16 }(i)17 }18 time.Sleep(5 * time.Second)19}20import (21func main() {22 runtime.GOMAXPROCS(2)23 pool := NewResourcePool(2)24 for i := 0; i < 4; i++ {25 go func(jobId int) {26 fmt.Println("Job", jobId, "started")27 time.Sleep(1 * time.Second)28 fmt.Println("Job", jobId, "finished")29 }(i)30 }31 time.Sleep(5 * time.Second)32}

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SequentialResourcePool

Using AI Code Generation

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1import (2func main() {3 runtime.GOMAXPROCS(1)4 pool := NewResourcePool(2)5 result := make(chan int, 10)6 jobs := make(chan int, 10)7 pool.Start()8 for i := 0; i < 10; i++ {9 }10 close(jobs)11 for i := 0; i < 10; i++ {12 go pool.SequentialResourcePool(jobs, result)13 }14 for i := 0; i < 10; i++ {15 fmt.Println(<-result)16 }17 pool.Stop()18}19import (20func main() {21 runtime.GOMAXPROCS(1)22 pool := NewResourcePool(2)23 result := make(chan int, 10)24 jobs := make(chan int, 10)25 pool.Start()26 for i := 0; i < 10; i++ {27 }28 close(jobs)29 for i := 0; i < 10; i++ {30 go pool.ConcurrentResourcePool(jobs, result)31 }32 for i := 0; i < 10; i++ {33 fmt.Println(<-result)34 }35 pool.Stop()36}37import (38func main() {39 runtime.GOMAXPROCS(1)

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SequentialResourcePool

Using AI Code Generation

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1import (2func main() {3 fmt.Println("Hello, playground")4 golresourcepool.SequentialResourcePool()5}6import (7func main() {8 fmt.Println("Hello, playground")9 golresourcepool.ConcurrentResourcePool()10}11import (12func main() {13 fmt.Println("Hello, playground")14 golresourcepool.ResourcePoolWithTimeout()15}16import (17func main() {18 fmt.Println("Hello, playground")19 golresourcepool.ResourcePoolWithTimeoutAndCancel()20}21import (22func main() {23 fmt.Println("Hello, playground")24 golresourcepool.ResourcePoolWithTimeoutAndCancelAndError()25}26import (27func main() {28 fmt.Println("Hello, playground")29 golresourcepool.ResourcePoolWithTimeoutAndCancelAndErrorAndWait()30}31import (32func main() {33 fmt.Println("Hello, playground")34 golresourcepool.ResourcePoolWithTimeoutAndCancelAndErrorAndWaitAndPanic()35}

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SequentialResourcePool

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1func main() {2 wg.Add(2)3 go func() {4 defer wg.Done()5 pool := &SequentialResourcePool{}6 resource, err := pool.Acquire()7 if err != nil {8 log.Println("Error Acquiring resource: ", err)9 }10 log.Println("Resource acquired: ", resource)11 pool.Release(resource)12 }()13 go func() {14 defer wg.Done()15 pool := &SequentialResourcePool{}16 resource, err := pool.Acquire()17 if err != nil {18 log.Println("Error Acquiring resource: ", err)19 }20 log.Println("Resource acquired: ", resource)21 pool.Release(resource)22 }()23 wg.Wait()24}25func main() {26 wg.Add(2)27 go func() {28 defer wg.Done()29 pool := &ParallelResourcePool{}30 resource, err := pool.Acquire()31 if err != nil {32 log.Println("Error Acquiring resource: ", err)33 }34 log.Println("Resource acquired: ", resource)35 pool.Release(resource)36 }()37 go func() {38 defer wg.Done()39 pool := &ParallelResourcePool{}40 resource, err := pool.Acquire()41 if err != nil {42 log.Println("Error Acquiring resource: ", err)43 }44 log.Println("Resource acquired: ", resource)45 pool.Release(resource)46 }()47 wg.Wait()48}

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SequentialResourcePool

Using AI Code Generation

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1import (2func main() {3 r := NewResourcePool(2)4 r.SequentialResourcePool()5 time.Sleep(1 * time.Second)6 fmt.Println("Main: exiting")7}8import (9func main() {10 r := NewResourcePool(2)11 r.ConcurrencyResourcePool()12 time.Sleep(1 * time.Second)13 fmt.Println("Main: exiting")14}15import (16func main() {17 r := NewResourcePool(2)18 r.ConcurrencyResourcePoolWithWaitGroup()19 time.Sleep(1 * time.Second)20 fmt.Println("Main: exiting")21}22import (23func main() {24 r := NewResourcePool(2)25 r.ConcurrencyResourcePoolWithWaitGroupAndMutex()26 time.Sleep(1 * time.Second)27 fmt.Println("Main: exiting")28}29import (30func main() {31 r := NewResourcePool(2)32 r.ConcurrencyResourcePoolWithWaitGroupAndMutexAndChannel()33 time.Sleep(1 * time.Second)34 fmt.Println("Main: exiting")35}36import (37func main() {38 r := NewResourcePool(2)39 r.ConcurrencyResourcePoolWithWaitGroupAndMutexAndChannelAndContext()40 time.Sleep(1 * time.Second)41 fmt.Println("Main: exiting")42}43import (

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SequentialResourcePool

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1import (2func main() {3 pool := NewResourcePool(5)4 resources := pool.Acquire(5)5 fmt.Println("Resources acquired: ", resources)6 pool.Release(resources)7 resources = pool.Acquire(3)8 fmt.Println("Resources acquired: ", resources)9 pool.Release(resources)10}11import (12func main() {13 pool := NewResourcePool(5)14 resources := pool.Acquire(5)15 fmt.Println("Resources acquired: ", resources)16 pool.Release(resources)17 resources = pool.Acquire(3)18 fmt.Println("Resources acquired: ", resources)19 pool.Release(resources)20}21import (22func main() {23 pool := NewResourcePool(5)24 resources := pool.Acquire(5)25 fmt.Println("Resources acquired: ", resources)26 pool.Release(resources)27 resources = pool.Acquire(3)28 fmt.Println("Resources acquired: ", resources)29 pool.Release(resources)30}

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SequentialResourcePool

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1import (2func main() {3 pool := NewResourcePool(2)4 r := &Resource{ID: 1}5 res, err := pool.Get(r)6 if err != nil {7 fmt.Println("Error getting resource:", err)8 }9 fmt.Println("got resource", res.ID)10 pool.Put(res)11 res, err = pool.Get(r)12 if err != nil {13 fmt.Println("Error getting resource:", err)14 }15 fmt.Println("got resource", res.ID)16 pool.Put(res)17 res, err = pool.Get(r)18 if err != nil {19 fmt.Println("Error getting resource:", err)20 }21 fmt.Println("got resource", res.ID)22 pool.Put(res)23 res, err = pool.Get(r)24 if err != nil {25 fmt.Println("Error getting resource:", err)26 }27 fmt.Println("got resource", res.ID)28 pool.Put(res)29 res, err = pool.Get(r)30 if err != nil {31 fmt.Println("Error getting resource:", err)32 }33 fmt.Println("got resource", res.ID)34 pool.Put(res)35 res, err = pool.Get(r)36 if err != nil {37 fmt.Println("Error getting resource:", err)38 }39 fmt.Println("got resource", res.ID)40 pool.Put(res)41 res, err = pool.Get(r)42 if err != nil {43 fmt.Println("Error getting resource:", err)44 }45 fmt.Println("got resource", res.ID)46 pool.Put(res)

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SequentialResourcePool

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1import (2func main() {3 instance := SequentialResourcePool{}4 instance.SequentialResourcePool()5}6import (7func main() {8 instance := SequentialResourcePool{}9 instance.SequentialResourcePool()10}11import (12func main() {13 instance := SequentialResourcePool{}14 instance.SequentialResourcePool()15}16import (17func main() {18 instance := SequentialResourcePool{}19 instance.SequentialResourcePool()20}21import (22func main() {23 instance := SequentialResourcePool{}24 instance.SequentialResourcePool()25}26import (27func main() {28 instance := SequentialResourcePool{}

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