1 files changed, 0 insertions, 261 deletions
diff --git a/pkg/tcpip/timer_test.go b/pkg/tcpip/timer_test.go
deleted file mode 100644
index 730134906..000000000
--- a/pkg/tcpip/timer_test.go
+++ /dev/null
@@ -1,261 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package tcpip_test
-
-import (
-	"sync"
-	"testing"
-	"time"
-
-	"gvisor.dev/gvisor/pkg/tcpip"
-)
-
-const (
-	shortDuration  = 1 * time.Nanosecond
-	middleDuration = 100 * time.Millisecond
-	longDuration   = 1 * time.Second
-)
-
-func TestCancellableTimerReassignment(t *testing.T) {
-	var timer tcpip.CancellableTimer
-	var wg sync.WaitGroup
-	var lock sync.Mutex
-
-	for i := 0; i < 2; i++ {
-		wg.Add(1)
-
-		go func() {
-			lock.Lock()
-			// Assigning a new timer value updates the timer's locker and function.
-			// This test makes sure there is no data race when reassigning a timer
-			// that has an active timer (even if it has been stopped as a stopped
-			// timer may be blocked on a lock before it can check if it has been
-			// stopped while another goroutine holds the same lock).
-			timer = tcpip.MakeCancellableTimer(&lock, func() {
-				wg.Done()
-			})
-			timer.Reset(shortDuration)
-			lock.Unlock()
-		}()
-	}
-	wg.Wait()
-}
-
-func TestCancellableTimerFire(t *testing.T) {
-	t.Parallel()
-
-	ch := make(chan struct{})
-	var lock sync.Mutex
-
-	timer := tcpip.MakeCancellableTimer(&lock, func() {
-		ch <- struct{}{}
-	})
-	timer.Reset(shortDuration)
-
-	// Wait for timer to fire.
-	select {
-	case <-ch:
-	case <-time.After(middleDuration):
-		t.Fatal("timed out waiting for timer to fire")
-	}
-
-	// The timer should have fired only once.
-	select {
-	case <-ch:
-		t.Fatal("no other timers should have fired")
-	case <-time.After(middleDuration):
-	}
-}
-
-func TestCancellableTimerResetFromLongDuration(t *testing.T) {
-	t.Parallel()
-
-	ch := make(chan struct{})
-	var lock sync.Mutex
-
-	timer := tcpip.MakeCancellableTimer(&lock, func() { ch <- struct{}{} })
-	timer.Reset(middleDuration)
-
-	lock.Lock()
-	timer.StopLocked()
-	lock.Unlock()
-
-	timer.Reset(shortDuration)
-
-	// Wait for timer to fire.
-	select {
-	case <-ch:
-	case <-time.After(middleDuration):
-		t.Fatal("timed out waiting for timer to fire")
-	}
-
-	// The timer should have fired only once.
-	select {
-	case <-ch:
-		t.Fatal("no other timers should have fired")
-	case <-time.After(middleDuration):
-	}
-}
-
-func TestCancellableTimerResetFromShortDuration(t *testing.T) {
-	t.Parallel()
-
-	ch := make(chan struct{})
-	var lock sync.Mutex
-
-	lock.Lock()
-	timer := tcpip.MakeCancellableTimer(&lock, func() { ch <- struct{}{} })
-	timer.Reset(shortDuration)
-	timer.StopLocked()
-	lock.Unlock()
-
-	// Wait for timer to fire if it wasn't correctly stopped.
-	select {
-	case <-ch:
-		t.Fatal("timer fired after being stopped")
-	case <-time.After(middleDuration):
-	}
-
-	timer.Reset(shortDuration)
-
-	// Wait for timer to fire.
-	select {
-	case <-ch:
-	case <-time.After(middleDuration):
-		t.Fatal("timed out waiting for timer to fire")
-	}
-
-	// The timer should have fired only once.
-	select {
-	case <-ch:
-		t.Fatal("no other timers should have fired")
-	case <-time.After(middleDuration):
-	}
-}
-
-func TestCancellableTimerImmediatelyStop(t *testing.T) {
-	t.Parallel()
-
-	ch := make(chan struct{})
-	var lock sync.Mutex
-
-	for i := 0; i < 1000; i++ {
-		lock.Lock()
-		timer := tcpip.MakeCancellableTimer(&lock, func() { ch <- struct{}{} })
-		timer.Reset(shortDuration)
-		timer.StopLocked()
-		lock.Unlock()
-	}
-
-	// Wait for timer to fire if it wasn't correctly stopped.
-	select {
-	case <-ch:
-		t.Fatal("timer fired after being stopped")
-	case <-time.After(middleDuration):
-	}
-}
-
-func TestCancellableTimerStoppedResetWithoutLock(t *testing.T) {
-	t.Parallel()
-
-	ch := make(chan struct{})
-	var lock sync.Mutex
-
-	lock.Lock()
-	timer := tcpip.MakeCancellableTimer(&lock, func() { ch <- struct{}{} })
-	timer.Reset(shortDuration)
-	timer.StopLocked()
-	lock.Unlock()
-
-	for i := 0; i < 10; i++ {
-		timer.Reset(middleDuration)
-
-		lock.Lock()
-		// Sleep until the timer fires and gets blocked trying to take the lock.
-		time.Sleep(middleDuration * 2)
-		timer.StopLocked()
-		lock.Unlock()
-	}
-
-	// Wait for double the duration so timers that weren't correctly stopped can
-	// fire.
-	select {
-	case <-ch:
-		t.Fatal("timer fired after being stopped")
-	case <-time.After(middleDuration * 2):
-	}
-}
-
-func TestManyCancellableTimerResetAfterBlockedOnLock(t *testing.T) {
-	t.Parallel()
-
-	ch := make(chan struct{})
-	var lock sync.Mutex
-
-	lock.Lock()
-	timer := tcpip.MakeCancellableTimer(&lock, func() { ch <- struct{}{} })
-	timer.Reset(shortDuration)
-	for i := 0; i < 10; i++ {
-		// Sleep until the timer fires and gets blocked trying to take the lock.
-		time.Sleep(middleDuration)
-		timer.StopLocked()
-		timer.Reset(shortDuration)
-	}
-	lock.Unlock()
-
-	// Wait for double the duration for the last timer to fire.
-	select {
-	case <-ch:
-	case <-time.After(middleDuration):
-		t.Fatal("timed out waiting for timer to fire")
-	}
-
-	// The timer should have fired only once.
-	select {
-	case <-ch:
-		t.Fatal("no other timers should have fired")
-	case <-time.After(middleDuration):
-	}
-}
-
-func TestManyCancellableTimerResetUnderLock(t *testing.T) {
-	t.Parallel()
-
-	ch := make(chan struct{})
-	var lock sync.Mutex
-
-	lock.Lock()
-	timer := tcpip.MakeCancellableTimer(&lock, func() { ch <- struct{}{} })
-	timer.Reset(shortDuration)
-	for i := 0; i < 10; i++ {
-		timer.StopLocked()
-		timer.Reset(shortDuration)
-	}
-	lock.Unlock()
-
-	// Wait for double the duration for the last timer to fire.
-	select {
-	case <-ch:
-	case <-time.After(middleDuration):
-		t.Fatal("timed out waiting for timer to fire")
-	}
-
-	// The timer should have fired only once.
-	select {
-	case <-ch:
-		t.Fatal("no other timers should have fired")
-	case <-time.After(middleDuration):
-	}
-}