platform: Add OOM Report & Crash Report

experimental/libbox/setup.go

@@ -1,13 +1,17 @@
 package libbox
 
 import (
+	"math"
 	"os"
+	"path/filepath"
+	"runtime"
 	"runtime/debug"
 	"time"
 
 	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/experimental/locale"
 	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing-box/service/oomkiller"
 	"github.com/sagernet/sing/common/byteformats"
 )
 
@@ -22,6 +26,10 @@ var (
 	sCommandServerSecret     string
 	sLogMaxLines             int
 	sDebug                   bool
+	sCrashReportSource       string
+	sOOMKillerEnabled        bool
+	sOOMKillerDisabled       bool
+	sOOMMemoryLimit          int64
 )
 
 func init() {
@@ -38,9 +46,13 @@ type SetupOptions struct {
 	CommandServerSecret     string
 	LogMaxLines             int
 	Debug                   bool
+	CrashReportSource       string
+	OomKillerEnabled        bool
+	OomKillerDisabled       bool
+	OomMemoryLimit          int64
 }
 
-func Setup(options *SetupOptions) error {
+func applySetupOptions(options *SetupOptions) {
 	sBasePath = options.BasePath
 	sWorkingPath = options.WorkingPath
 	sTempPath = options.TempPath
@@ -56,10 +68,33 @@ func Setup(options *SetupOptions) error {
 	sCommandServerSecret = options.CommandServerSecret
 	sLogMaxLines = options.LogMaxLines
 	sDebug = options.Debug
+	sCrashReportSource = options.CrashReportSource
+	ReloadSetupOptions(options)
+}
 
+func ReloadSetupOptions(options *SetupOptions) {
+	sOOMKillerEnabled = options.OomKillerEnabled
+	sOOMKillerDisabled = options.OomKillerDisabled
+	sOOMMemoryLimit = options.OomMemoryLimit
+	if sOOMKillerEnabled {
+		if sOOMMemoryLimit == 0 && C.IsIos {
+			sOOMMemoryLimit = oomkiller.DefaultAppleNetworkExtensionMemoryLimit
+		}
+		if sOOMMemoryLimit > 0 {
+			debug.SetMemoryLimit(sOOMMemoryLimit * 3 / 4)
+		} else {
+			debug.SetMemoryLimit(math.MaxInt64)
+		}
+	} else {
+		debug.SetMemoryLimit(math.MaxInt64)
+	}
+}
+
+func Setup(options *SetupOptions) error {
+	applySetupOptions(options)
 	os.MkdirAll(sWorkingPath, 0o777)
 	os.MkdirAll(sTempPath, 0o777)
-	return nil
+	return redirectStderr(filepath.Join(sWorkingPath, "CrashReport-"+sCrashReportSource+".log"))
 }
 
 func SetLocale(localeId string) {
@@ -70,6 +105,10 @@ func Version() string {
 	return C.Version
 }
 
+func GoVersion() string {
+	return runtime.Version() + ", " + runtime.GOOS + "/" + runtime.GOARCH
+}
+
 func FormatBytes(length int64) string {
 	return byteformats.FormatKBytes(uint64(length))
 }