X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=js.go;h=56566e444d1c9391b38e113aa796011435fcc6a8;hb=b4eefdd675c9aef9ff8bd1089d031ee05733195b;hp=1e452ee51a02725bcae747bdc501b72d3fffe52b;hpb=c41fe0fbd726f397636b569161f286821e221885;p=goredo.git

diff --git a/js.go b/js.go
index 1e452ee..56566e4 100644
--- a/js.go
+++ b/js.go
@@ -1,6 +1,6 @@
 /*
 goredo -- djb's redo implementation on pure Go
-Copyright (C) 2020-2021 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2020-2023 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
@@ -24,11 +24,9 @@ import (
 	"fmt"
 	"log"
 	"os"
-	"os/signal"
 	"regexp"
 	"strconv"
 	"sync"
-	"syscall"
 )
 
 const (
@@ -39,7 +37,7 @@ const (
 	EnvJSToken = "REDO_JS_TOKEN"
 	EnvMake    = "REDO_MAKE"
 
-	MakeTypeNone = "none"
+	MakeTypeNone  = "none"
 	MakeTypeBmake = "bmake"
 	MakeTypeGmake = "gmake"
 )
@@ -69,17 +67,27 @@ var (
 	jsTokens  map[byte]int
 	jsTokensM sync.Mutex
 
-	flagJobs = flag.Int("j", -1, fmt.Sprintf("number of parallel jobs (0=inf, <0=1) (%s)", EnvJobs))
+	flagJobs *int
 )
 
+func init() {
+	cmdName := CmdName()
+	if !(cmdName == CmdNameRedo || cmdName == CmdNameRedoIfchange) {
+		return
+	}
+	flagJobs = flag.Int("j", -1,
+		fmt.Sprintf("number of parallel jobs (0=inf, <0=1) (%s)", EnvJobs))
+}
+
 func jsStart(jobsEnv string) {
 	jobs := uint64(1)
 	var err error
-	if *flagJobs == 0 {
+	switch {
+	case *flagJobs == 0:
 		jobs = 0
-	} else if *flagJobs > 0 {
+	case *flagJobs > 0:
 		jobs = uint64(*flagJobs)
-	} else if jobsEnv != "" {
+	case jobsEnv != "":
 		jobs, err = strconv.ParseUint(jobsEnv, 10, 64)
 		if err != nil {
 			log.Fatalln("can not parse", EnvJobs, err)
@@ -93,7 +101,7 @@ func jsStart(jobsEnv string) {
 	if err != nil {
 		log.Fatalln(err)
 	}
-	trace(CJS, "initial fill with %d", jobs)
+	tracef(CJS, "initial fill with %d", jobs)
 	jsTokens[BMakeGoodToken] = int(jobs)
 	for ; jobs > 0; jobs-- {
 		jsReleaseNoLock(BMakeGoodToken)
@@ -161,20 +169,6 @@ func jsInit() {
 		jsTokens[jsToken]++
 		jsRelease("ifchange entered", jsToken)
 	}
-
-	killed := make(chan os.Signal, 0)
-	signal.Notify(killed, syscall.SIGTERM, syscall.SIGINT)
-	go func() {
-		<-killed
-		jsTokensM.Lock()
-		for token, i := range jsTokens {
-			for ; i > 0; i-- {
-				jsReleaseNoLock(token)
-			}
-		}
-		jsTokensM.Unlock()
-		os.Exit(1)
-	}()
 }
 
 func jsReleaseNoLock(token byte) {
@@ -187,18 +181,28 @@ func jsRelease(ctx string, token byte) {
 	if JSW == nil {
 		return
 	}
-	trace(CJS, "release from %s", ctx)
+	tracef(CJS, "release from %s", ctx)
 	jsTokensM.Lock()
 	jsTokens[token]--
 	jsReleaseNoLock(token)
 	jsTokensM.Unlock()
 }
 
+func jsReleaseAll() {
+	jsTokensM.Lock()
+	for token, i := range jsTokens {
+		for ; i > 0; i-- {
+			jsReleaseNoLock(token)
+		}
+	}
+	jsTokensM.Unlock()
+}
+
 func jsAcquire(ctx string) byte {
 	if JSR == nil {
 		return BMakeGoodToken
 	}
-	trace(CJS, "acquire for %s", ctx)
+	tracef(CJS, "acquire for %s", ctx)
 	token := []byte{0}
 	if n, err := JSR.Read(token); err != nil || n != 1 {
 		log.Fatalln("can not read JSR:", err)
@@ -206,6 +210,6 @@ func jsAcquire(ctx string) byte {
 	jsTokensM.Lock()
 	jsTokens[token[0]]++
 	jsTokensM.Unlock()
-	trace(CJS, "acquired for %s", ctx)
+	tracef(CJS, "acquired for %s", ctx)
 	return token[0]
 }