// Licensed to the LF AI & Data foundation 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 trace import ( "fmt" "runtime" ) const ( numFuncsInStack = 10 frameNumToSkip = 2 ) // StackTraceMsg returns the stack information, which numFuncs means how many functions do you want to show in the stack // information. func StackTraceMsg(numFuncs uint) string { pc := make([]uintptr, numFuncs) n := runtime.Callers(frameNumToSkip, pc) frames := runtime.CallersFrames(pc[:n]) ret := "" for { frame, more := frames.Next() ret += fmt.Sprintf("%s:%d %s\n", frame.File, frame.Line, frame.Function) if !more { break } } return ret } // StackTrace returns the stack trace information. func StackTrace() string { return StackTraceMsg(numFuncsInStack) }