Mercurial > gemma
view pkg/log/log.go @ 5520:05db984d3db1
Improve performance of bottleneck area calculation
Avoid buffer calculations by replacing them with simple distance comparisons
and calculate the boundary of the result geometry only once per iteration.
In some edge cases with very large numbers of iterations, this reduced
the runtime of a bottleneck import by a factor of more than twenty.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 21 Oct 2021 19:50:39 +0200 |
parents | b4f59aef3f9e |
children | 1222b777f51f |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2021 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package log import ( "fmt" lg "log" "os" "strings" "sync" "sync/atomic" ) type LogLevel uint32 const ( TraceLogLevel = LogLevel(iota) DebugLogLevel InfoLogLevel WarnLogLevel ErrorLogLevel FatalLogLevel ) var ( logLevel = uint32(InfoLogLevel) logFileMu sync.Mutex logFile *os.File ) func init() { lg.SetFlags(lg.LstdFlags | lg.Lshortfile) } const callDepth = 2 func SetupLog(filename string, perm os.FileMode) error { f, err := os.OpenFile(filename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, perm) if err != nil { return err } logFileMu.Lock() defer logFileMu.Unlock() if logFile != nil { logFile.Close() } logFile = f lg.SetOutput(logFile) return nil } func ShutdownLog() { logFileMu.Lock() defer logFileMu.Unlock() if logFile != nil { logFile.Close() logFile = nil } lg.SetOutput(os.Stderr) } func ParseLogLevel(s string) LogLevel { switch strings.ToLower(s) { case "trace": return TraceLogLevel case "debug": return DebugLogLevel case "info": return InfoLogLevel case "warn": return WarnLogLevel case "error": return ErrorLogLevel case "fatal": return FatalLogLevel default: return InfoLogLevel } } func (level LogLevel) String() string { switch level { case TraceLogLevel: return "trace" case DebugLogLevel: return "debug" case InfoLogLevel: return "info" case WarnLogLevel: return "warn" case ErrorLogLevel: return "error" case FatalLogLevel: return "fatal" default: return "unknown" } } func GetLogLevel() LogLevel { return LogLevel(atomic.LoadUint32(&logLevel)) } func SetLogLevel(level LogLevel) { atomic.StoreUint32(&logLevel, uint32(level)) } func Tracef(f string, args ...interface{}) { if TraceLogLevel >= GetLogLevel() { s := fmt.Sprintf(f, args...) lg.Output(callDepth, "[TRACE] "+s) } } func Traceln(s string) { if TraceLogLevel >= GetLogLevel() { lg.Output(callDepth, "[TRACE] "+s) } } func Debugf(f string, args ...interface{}) { if DebugLogLevel >= GetLogLevel() { s := fmt.Sprintf(f, args...) lg.Output(callDepth, "[DEBUG] "+s) } } func Debugln(s string) { if DebugLogLevel >= GetLogLevel() { lg.Output(callDepth, "[DEBUG] "+s) } } func Infof(f string, args ...interface{}) { if InfoLogLevel >= GetLogLevel() { s := fmt.Sprintf(f, args...) lg.Output(callDepth, "[INFO] "+s) } } func Infoln(s string) { if InfoLogLevel >= GetLogLevel() { lg.Output(callDepth, "[INFO] "+s) } } func Warnf(f string, args ...interface{}) { if WarnLogLevel >= GetLogLevel() { s := fmt.Sprintf(f, args...) lg.Output(callDepth, "[WARN] "+s) } } func Warnln(s string) { if WarnLogLevel >= GetLogLevel() { lg.Output(callDepth, "[WARN] "+s) } } func Errorf(f string, args ...interface{}) { if ErrorLogLevel >= GetLogLevel() { s := fmt.Sprintf(f, args...) lg.Output(callDepth, "[ERROR] "+s) } } func Errorln(s string) { if ErrorLogLevel >= GetLogLevel() { lg.Output(callDepth, "[ERROR] "+s) } } func Fatalf(f string, args ...interface{}) { if FatalLogLevel >= GetLogLevel() { s := fmt.Sprintf(f, args...) lg.Output(callDepth, "[FATAL] "+s) os.Exit(1) } } func Fatalln(s string) { if FatalLogLevel >= GetLogLevel() { lg.Output(callDepth, "[FATAL] "+s) os.Exit(1) } } func Panicf(f string, args ...interface{}) { s := fmt.Sprintf(f, args...) lg.Output(callDepth, "[PANIC] "+s) panic(s) } func Panicln(s string) { lg.Output(callDepth, "[PANIC] "+s) panic(s) }