世界
75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
package oomkiller
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import (
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"context"
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"sync/atomic"
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"time"
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"github.com/sagernet/sing-box/adapter"
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boxService "github.com/sagernet/sing-box/adapter/service"
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boxConstant "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing-box/option"
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"github.com/sagernet/sing/service"
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)
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type OOMReporter interface {
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WriteReport(memoryUsage uint64) error
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WriteDraft(memoryUsage uint64) error
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DiscardDraft() error
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}
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func RegisterService(registry *boxService.Registry) {
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boxService.Register[option.OOMKillerServiceOptions](registry, boxConstant.TypeOOMKiller, NewService)
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}
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type Service struct {
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boxService.Adapter
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ctx context.Context
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logger log.ContextLogger
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network adapter.NetworkManager
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timerConfig timerConfig
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adaptiveTimer *adaptiveTimer
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lastReportTime atomic.Int64
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//nolint:unused // touched only on darwin && cgo via writeOOMDraft/discardOOMDraft.
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lastDraftTime atomic.Int64
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//nolint:unused // touched only on darwin && cgo via writeOOMDraft/discardOOMDraft.
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draftCancelled atomic.Bool
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}
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func NewService(ctx context.Context, logger log.ContextLogger, tag string, options option.OOMKillerServiceOptions) (adapter.Service, error) {
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memoryLimit, mode := resolvePolicyMode(ctx, options)
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config, err := buildTimerConfig(options, memoryLimit, mode, options.KillerDisabled)
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if err != nil {
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return nil, err
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}
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return &Service{
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Adapter: boxService.NewAdapter(boxConstant.TypeOOMKiller, tag),
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ctx: ctx,
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logger: logger,
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network: service.FromContext[adapter.NetworkManager](ctx),
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timerConfig: config,
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}, nil
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}
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func (s *Service) writeOOMReport(memoryUsage uint64) {
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now := time.Now().Unix()
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lastReport := s.lastReportTime.Load()
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if now-lastReport < 3600 {
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return
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}
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if !s.lastReportTime.CompareAndSwap(lastReport, now) {
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return
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}
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reporter := service.FromContext[OOMReporter](s.ctx)
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if reporter == nil {
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return
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}
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err := reporter.WriteReport(memoryUsage)
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if err != nil {
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s.logger.Warn("failed to write OOM report: ", err)
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} else {
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s.logger.Info("OOM report saved")
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}
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}
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