X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=js.go;h=a984669198d935c2796c04f4e1c2f45f57e078ae;hb=3ad09b01e78cc63612629e435bce6506e05d9253;hp=ccc9fe1d1ab1a9ecaa4f4a202804af09e3dbbde6;hpb=634ee31ae35a2eaac517e0ffa1b7caede4b27ac5;p=goredo.git

diff --git a/js.go b/js.go
index ccc9fe1..a984669 100644
--- a/js.go
+++ b/js.go
@@ -1,6 +1,6 @@
 /*
 goredo -- redo implementation on pure Go
-Copyright (C) 2020 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2020-2021 Sergey Matveev <stargrave@stargrave.org>
 
 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
@@ -21,6 +21,7 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"log"
 	"os"
 	"os/signal"
@@ -41,7 +42,7 @@ var (
 	jsTokens  int
 	jsTokensM sync.Mutex
 
-	flagJobs = flag.Uint64("j", 1, "number of parallel jobs (0=inf) (REDO_JOBS)")
+	flagJobs = flag.Int("j", -1, fmt.Sprintf("number of parallel jobs (0=inf, <0=1) (%s)", EnvJobs))
 )
 
 func jsInit() {
@@ -72,22 +73,23 @@ func jsInit() {
 		return
 	}
 
-	var jobs uint64
-	if v := os.Getenv(EnvJobs); v != "" {
-		var err error
+	jobs := uint64(1)
+	var err error
+	if *flagJobs == 0 {
+		jobs = 0
+	} else if *flagJobs > 0 {
+		jobs = uint64(*flagJobs)
+	} else if v := os.Getenv(EnvJobs); v != "" {
 		jobs, err = strconv.ParseUint(v, 10, 64)
 		if err != nil {
 			log.Fatalln("can not parse", EnvJobs, err)
 		}
-	} else {
-		jobs = *flagJobs
 	}
 	if jobs == 0 {
 		// infinite jobs
 		return
 	}
 
-	var err error
 	JSR, JSW, err = os.Pipe()
 	if err != nil {
 		panic(err)