Moved to atomicbitops and renamed files

pkg/atomicbitops/BUILD

@@ -5,6 +5,8 @@ package(licenses = ["notice"])
 go_library(
     name = "atomicbitops",
     srcs = [
+        "aligned_32bit_unsafe.go",
+        "aligned_64bit.go",
         "atomicbitops.go",
         "atomicbitops_amd64.s",
         "atomicbitops_arm64.s",

pkg/atomicbitops/aligned_32bit_unsafe.go

@@ -14,7 +14,7 @@
 
 // +build arm 386
 
-package tcpip
+package atomicbitops
 
 import (
 	"sync/atomic"

pkg/atomicbitops/aligned_64bit.go

@@ -14,7 +14,7 @@
 
 // +build !arm,!386
 
-package tcpip
+package atomicbitops
 
 import "sync/atomic"
 

pkg/tcpip/BUILD

@@ -19,8 +19,6 @@ go_template_instance(
 go_library(
     name = "tcpip",
     srcs = [
-        "aligned.go",
-        "aligned_unsafe.go",
         "errors.go",
         "sock_err_list.go",
         "socketops.go",
@@ -31,6 +29,7 @@ go_library(
     ],
     visibility = ["//visibility:public"],
     deps = [
+        "//pkg/atomicbitops",
         "//pkg/sync",
         "//pkg/tcpip/buffer",
         "//pkg/waiter",

pkg/tcpip/socketops.go

@@ -18,6 +18,7 @@ import (
 	"math"
 	"sync/atomic"
 
+	"gvisor.dev/gvisor/pkg/atomicbitops"
 	"gvisor.dev/gvisor/pkg/sync"
 )
 
@@ -213,7 +214,7 @@ type SocketOptions struct {
 	getSendBufferLimits GetSendBufferLimits `state:"manual"`
 
 	// sendBufferSize determines the send buffer size for this socket.
-	sendBufferSize AlignedAtomicInt64
+	sendBufferSize atomicbitops.AlignedAtomicInt64
 
 	// getReceiveBufferLimits provides the handler to get the min, default and
 	// max size for receive buffer. It is initialized at the creation time and

pkg/tcpip/stack/BUILD

@@ -73,6 +73,7 @@ go_library(
     ],
     visibility = ["//visibility:public"],
     deps = [
+        "//pkg/atomicbitops",
         "//pkg/ilist",
         "//pkg/log",
         "//pkg/rand",

pkg/tcpip/stack/stack.go

@@ -29,6 +29,7 @@ import (
 	"time"
 
 	"golang.org/x/time/rate"
+	"gvisor.dev/gvisor/pkg/atomicbitops"
 	"gvisor.dev/gvisor/pkg/rand"
 	"gvisor.dev/gvisor/pkg/sync"
 	"gvisor.dev/gvisor/pkg/tcpip"
@@ -65,10 +66,10 @@ type ResumableEndpoint interface {
 }
 
 // uniqueIDGenerator is a default unique ID generator.
-type uniqueIDGenerator uint64
+type uniqueIDGenerator atomicbitops.AlignedAtomicUint64
 
 func (u *uniqueIDGenerator) UniqueID() uint64 {
-	return atomic.AddUint64((*uint64)(u), 1)
+	return ((*atomicbitops.AlignedAtomicUint64)(u)).Add(1)
 }
 
 // Stack is a networking stack, with all supported protocols, NICs, and route

pkg/tcpip/tcpip.go

@@ -40,6 +40,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"gvisor.dev/gvisor/pkg/atomicbitops"
 	"gvisor.dev/gvisor/pkg/sync"
 	"gvisor.dev/gvisor/pkg/waiter"
 )
@@ -1220,7 +1221,7 @@ type NetworkProtocolNumber uint32
 
 // A StatCounter keeps track of a statistic.
 type StatCounter struct {
-	count AlignedAtomicUint64
+	count atomicbitops.AlignedAtomicUint64
 }
 
 // Increment adds one to the counter.