diff options
Diffstat (limited to 'vendor/github.com/bytedance/sonic/loader/register.go')
| -rw-r--r-- | vendor/github.com/bytedance/sonic/loader/register.go | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/vendor/github.com/bytedance/sonic/loader/register.go b/vendor/github.com/bytedance/sonic/loader/register.go new file mode 100644 index 000000000..d32f9fa50 --- /dev/null +++ b/vendor/github.com/bytedance/sonic/loader/register.go @@ -0,0 +1,55 @@ +// +build !bytedance_tango + +/** + * Copyright 2024 ByteDance Inc. + * + * 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 + * + * https://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 loader + +import ( + "sync/atomic" + "unsafe" +) + +func registerModule(mod *moduledata) { + registerModuleLockFree(&lastmoduledatap, mod) +} + +func registerModuleLockFree(tail **moduledata, mod *moduledata) { + for { + oldTail := loadModule(tail) + if casModule(tail, oldTail, mod) { + storeModule(&oldTail.next, mod) + break + } + } +} + +func loadModule(p **moduledata) *moduledata { + return (*moduledata)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p)))) +} + +func storeModule(p **moduledata, value *moduledata) { + atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(value)) +} + +func casModule(p **moduledata, oldValue *moduledata, newValue *moduledata) bool { + return atomic.CompareAndSwapPointer( + (*unsafe.Pointer)(unsafe.Pointer(p)), + unsafe.Pointer(oldValue), + unsafe.Pointer(newValue), + ) +} + |
