github.com/cloudwego/frugal@v0.1.15/internal/rt/funcname.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      `fmt`
    21      `runtime`
    22      `unsafe`
    23  )
    24  
    25  func FuncName(p unsafe.Pointer) string {
    26      if fn := runtime.FuncForPC(uintptr(p)); fn == nil {
    27          return "???"
    28      } else if fp := fn.Entry(); fp == uintptr(p) {
    29          return fn.Name()
    30      } else {
    31          return fmt.Sprintf("%s+%#x", fn.Name(), uintptr(p) - fp)
    32      }
    33  }