github.com/cloudwego/frugal@v0.1.15/internal/rt/escape.go (about) 1 /* 2 * Copyright 2022 ByteDance Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package rt 18 19 import ( 20 `unsafe` 21 ) 22 23 // NoEscape hides a pointer from escape analysis. NoEscape is 24 // the identity function but escape analysis doesn't think the 25 // output depends on the input. NoEscape is inlined and currently 26 // compiles down to zero instructions. 27 // USE CAREFULLY! 28 //go:nosplit 29 //goland:noinspection GoVetUnsafePointer 30 func NoEscape(p unsafe.Pointer) unsafe.Pointer { 31 x := uintptr(p) 32 return unsafe.Pointer(x ^ 0) 33 }