diff options
Diffstat (limited to 'pkg/goid')
| -rw-r--r-- | pkg/goid/BUILD | 24 | ||||
| -rw-r--r-- | pkg/goid/empty_test.go | 22 | ||||
| -rw-r--r-- | pkg/goid/goid.go | 24 | ||||
| -rw-r--r-- | pkg/goid/goid_amd64.s | 21 | ||||
| -rw-r--r-- | pkg/goid/goid_race.go | 25 | ||||
| -rw-r--r-- | pkg/goid/goid_test.go | 74 | ||||
| -rw-r--r-- | pkg/goid/goid_unsafe.go | 64 |
7 files changed, 0 insertions, 254 deletions
diff --git a/pkg/goid/BUILD b/pkg/goid/BUILD deleted file mode 100644 index ea8d2422c..000000000 --- a/pkg/goid/BUILD +++ /dev/null @@ -1,24 +0,0 @@ -load("//tools:defs.bzl", "go_library", "go_test") - -package(licenses = ["notice"]) - -go_library( - name = "goid", - srcs = [ - "goid.go", - "goid_amd64.s", - "goid_race.go", - "goid_unsafe.go", - ], - visibility = ["//visibility:public"], -) - -go_test( - name = "goid_test", - size = "small", - srcs = [ - "empty_test.go", - "goid_test.go", - ], - library = ":goid", -) diff --git a/pkg/goid/empty_test.go b/pkg/goid/empty_test.go deleted file mode 100644 index c0a4b17ab..000000000 --- a/pkg/goid/empty_test.go +++ /dev/null @@ -1,22 +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. - -// +build !race - -package goid - -import "testing" - -// TestNothing exists to make the build system happy. -func TestNothing(t *testing.T) {} diff --git a/pkg/goid/goid.go b/pkg/goid/goid.go deleted file mode 100644 index 39df30031..000000000 --- a/pkg/goid/goid.go +++ /dev/null @@ -1,24 +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. - -// +build !race - -// Package goid provides access to the ID of the current goroutine in -// race/gotsan builds. -package goid - -// Get returns the ID of the current goroutine. -func Get() int64 { - panic("unimplemented for non-race builds") -} diff --git a/pkg/goid/goid_amd64.s b/pkg/goid/goid_amd64.s deleted file mode 100644 index d9f5cd2a3..000000000 --- a/pkg/goid/goid_amd64.s +++ /dev/null @@ -1,21 +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. - -#include "textflag.h" - -// func getg() *g -TEXT ·getg(SB),NOSPLIT,$0-8 - MOVQ (TLS), R14 - MOVQ R14, ret+0(FP) - RET diff --git a/pkg/goid/goid_race.go b/pkg/goid/goid_race.go deleted file mode 100644 index 1766beaee..000000000 --- a/pkg/goid/goid_race.go +++ /dev/null @@ -1,25 +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. - -// Only available in race/gotsan builds. -// +build race - -// Package goid provides access to the ID of the current goroutine in -// race/gotsan builds. -package goid - -// Get returns the ID of the current goroutine. -func Get() int64 { - return goid() -} diff --git a/pkg/goid/goid_test.go b/pkg/goid/goid_test.go deleted file mode 100644 index 31970ce79..000000000 --- a/pkg/goid/goid_test.go +++ /dev/null @@ -1,74 +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. - -// +build race - -package goid - -import ( - "runtime" - "sync" - "testing" -) - -func TestInitialGoID(t *testing.T) { - const max = 10000 - if id := goid(); id < 0 || id > max { - t.Errorf("got goid = %d, want 0 < goid <= %d", id, max) - } -} - -// TestGoIDSquence verifies that goid returns values which could plausibly be -// goroutine IDs. If this test breaks or becomes flaky, the structs in -// goid_unsafe.go may need to be updated. -func TestGoIDSquence(t *testing.T) { - // Goroutine IDs are cached by each P. - runtime.GOMAXPROCS(1) - - // Fill any holes in lower range. - for i := 0; i < 50; i++ { - var wg sync.WaitGroup - wg.Add(1) - go func() { - wg.Done() - - // Leak the goroutine to prevent the ID from being - // reused. - select {} - }() - wg.Wait() - } - - id := goid() - for i := 0; i < 100; i++ { - var ( - newID int64 - wg sync.WaitGroup - ) - wg.Add(1) - go func() { - newID = goid() - wg.Done() - - // Leak the goroutine to prevent the ID from being - // reused. - select {} - }() - wg.Wait() - if max := id + 100; newID <= id || newID > max { - t.Errorf("unexpected goroutine ID pattern, got goid = %d, want %d < goid <= %d (previous = %d)", newID, id, max, id) - } - id = newID - } -} diff --git a/pkg/goid/goid_unsafe.go b/pkg/goid/goid_unsafe.go deleted file mode 100644 index ded8004dd..000000000 --- a/pkg/goid/goid_unsafe.go +++ /dev/null @@ -1,64 +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 goid - -// Structs from Go runtime. These may change in the future and require -// updating. These structs are currently the same on both AMD64 and ARM64, -// but may diverge in the future. - -type stack struct { - lo uintptr - hi uintptr -} - -type gobuf struct { - sp uintptr - pc uintptr - g uintptr - ctxt uintptr - ret uint64 - lr uintptr - bp uintptr -} - -type g struct { - stack stack - stackguard0 uintptr - stackguard1 uintptr - - _panic uintptr - _defer uintptr - m uintptr - sched gobuf - syscallsp uintptr - syscallpc uintptr - stktopsp uintptr - param uintptr - atomicstatus uint32 - stackLock uint32 - goid int64 - - // More fields... - // - // We only use goid and the fields before it are only listed to - // calculate the correct offset. -} - -func getg() *g - -// goid returns the ID of the current goroutine. -func goid() int64 { - return getg().goid -} |