| /* |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 utils |
| |
| import ( |
| "fmt" |
| "runtime" |
| "strings" |
| ) |
| |
| // GatherCallFrames FIXME ... |
| func GatherCallFrames(delta int) string { |
| var name, file string |
| var line int |
| var pc [16]uintptr |
| |
| n := runtime.Callers(3+delta, pc[:]) |
| for _, pc := range pc[:n] { |
| fn := runtime.FuncForPC(pc) |
| if fn == nil { |
| continue |
| } |
| file, line = fn.FileLine(pc) |
| name = fn.Name() |
| if !strings.HasPrefix(name, "runtime.") { |
| break |
| } |
| } |
| |
| switch { |
| case name != "": |
| return fmt.Sprintf("%v:%v", name, line) |
| case file != "": |
| return fmt.Sprintf("%v:%v", file, line) |
| } |
| |
| return fmt.Sprintf("pc:%x", pc) |
| } |