summaryrefslogtreecommitdiff
path: root/vendor/google.golang.org/protobuf/internal/impl/bitmap_race.go
diff options
context:
space:
mode:
authorLibravatar Terin Stock <terinjokes@gmail.com>2025-03-09 17:47:56 +0100
committerLibravatar Terin Stock <terinjokes@gmail.com>2025-03-10 01:59:49 +0100
commit3ac1ee16f377d31a0fb80c8dae28b6239ac4229e (patch)
treef61faa581feaaeaba2542b9f2b8234a590684413 /vendor/google.golang.org/protobuf/internal/impl/bitmap_race.go
parent[chore] update URLs to forked source (diff)
downloadgotosocial-3ac1ee16f377d31a0fb80c8dae28b6239ac4229e.tar.xz
[chore] remove vendor
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/bitmap_race.go')
-rw-r--r--vendor/google.golang.org/protobuf/internal/impl/bitmap_race.go126
1 files changed, 0 insertions, 126 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/bitmap_race.go b/vendor/google.golang.org/protobuf/internal/impl/bitmap_race.go
deleted file mode 100644
index e9a27583a..000000000
--- a/vendor/google.golang.org/protobuf/internal/impl/bitmap_race.go
+++ /dev/null
@@ -1,126 +0,0 @@
-// Copyright 2024 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build race
-
-package impl
-
-// When running under race detector, we add a presence map of bytes, that we can access
-// in the hook functions so that we trigger the race detection whenever we have concurrent
-// Read-Writes or Write-Writes. The race detector does not otherwise detect invalid concurrent
-// access to lazy fields as all updates of bitmaps and pointers are done using atomic operations.
-type RaceDetectHookData struct {
- shadowPresence *[]byte
-}
-
-// Hooks for presence bitmap operations that allocate, read and write the shadowPresence
-// using non-atomic operations.
-func (data *RaceDetectHookData) raceDetectHookAlloc(size presenceSize) {
- sp := make([]byte, size)
- atomicStoreShadowPresence(&data.shadowPresence, &sp)
-}
-
-func (p presence) raceDetectHookPresent(num uint32) {
- data := p.toRaceDetectData()
- if data == nil {
- return
- }
- sp := atomicLoadShadowPresence(&data.shadowPresence)
- if sp != nil {
- _ = (*sp)[num]
- }
-}
-
-func (p presence) raceDetectHookSetPresent(num uint32, size presenceSize) {
- data := p.toRaceDetectData()
- if data == nil {
- return
- }
- sp := atomicLoadShadowPresence(&data.shadowPresence)
- if sp == nil {
- data.raceDetectHookAlloc(size)
- sp = atomicLoadShadowPresence(&data.shadowPresence)
- }
- (*sp)[num] = 1
-}
-
-func (p presence) raceDetectHookClearPresent(num uint32) {
- data := p.toRaceDetectData()
- if data == nil {
- return
- }
- sp := atomicLoadShadowPresence(&data.shadowPresence)
- if sp != nil {
- (*sp)[num] = 0
-
- }
-}
-
-// raceDetectHookAllocAndCopy allocates a new shadowPresence slice at lazy and copies
-// shadowPresence bytes from src to lazy.
-func (p presence) raceDetectHookAllocAndCopy(q presence) {
- sData := q.toRaceDetectData()
- dData := p.toRaceDetectData()
- if sData == nil {
- return
- }
- srcSp := atomicLoadShadowPresence(&sData.shadowPresence)
- if srcSp == nil {
- atomicStoreShadowPresence(&dData.shadowPresence, nil)
- return
- }
- n := len(*srcSp)
- dSlice := make([]byte, n)
- atomicStoreShadowPresence(&dData.shadowPresence, &dSlice)
- for i := 0; i < n; i++ {
- dSlice[i] = (*srcSp)[i]
- }
-}
-
-// raceDetectHookPresent is called by the generated file interface
-// (*proto.internalFuncs) Present to optionally read an unprotected
-// shadow bitmap when race detection is enabled. In regular code it is
-// a noop.
-func raceDetectHookPresent(field *uint32, num uint32) {
- data := findPointerToRaceDetectData(field, num)
- if data == nil {
- return
- }
- sp := atomicLoadShadowPresence(&data.shadowPresence)
- if sp != nil {
- _ = (*sp)[num]
- }
-}
-
-// raceDetectHookSetPresent is called by the generated file interface
-// (*proto.internalFuncs) SetPresent to optionally write an unprotected
-// shadow bitmap when race detection is enabled. In regular code it is
-// a noop.
-func raceDetectHookSetPresent(field *uint32, num uint32, size presenceSize) {
- data := findPointerToRaceDetectData(field, num)
- if data == nil {
- return
- }
- sp := atomicLoadShadowPresence(&data.shadowPresence)
- if sp == nil {
- data.raceDetectHookAlloc(size)
- sp = atomicLoadShadowPresence(&data.shadowPresence)
- }
- (*sp)[num] = 1
-}
-
-// raceDetectHookClearPresent is called by the generated file interface
-// (*proto.internalFuncs) ClearPresent to optionally write an unprotected
-// shadow bitmap when race detection is enabled. In regular code it is
-// a noop.
-func raceDetectHookClearPresent(field *uint32, num uint32) {
- data := findPointerToRaceDetectData(field, num)
- if data == nil {
- return
- }
- sp := atomicLoadShadowPresence(&data.shadowPresence)
- if sp != nil {
- (*sp)[num] = 0
- }
-}