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stacktrace.go
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stacktrace.go
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/*
* Copyright (c) 2019, Psiphon Inc.
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
Package stacktrace provides helpers for handling stack trace information.
*/
package stacktrace
import (
"fmt"
"runtime"
"strings"
)
// GetFunctionName is a helper that extracts a simple function name from
// full name returned byruntime.Func.Name(). This is used to declutter
// error messages containing function names.
func GetFunctionName(pc uintptr) string {
funcName := runtime.FuncForPC(pc).Name()
index := strings.LastIndex(funcName, "/")
if index != -1 {
funcName = funcName[index+1:]
}
return funcName
}
// GetParentFunctionName returns the caller's parent function name and source
// file line number.
func GetParentFunctionName() string {
pc, _, line, _ := runtime.Caller(2)
return fmt.Sprintf("%s#%d", GetFunctionName(pc), line)
}