Build memory limiter for android

experimental/libbox/memory.go

@@ -1,18 +1,22 @@
-//go:build darwin
-
 package libbox
 
 import (
+	"math"
 	runtimeDebug "runtime/debug"
 
 	"github.com/sagernet/sing-box/common/dialer/conntrack"
 )
 
-const memoryLimit = 30 * 1024 * 1024
-
-func SetMemoryLimit() {
+func SetMemoryLimit(enabled bool) {
+	const memoryLimit = 30 * 1024 * 1024
+	if enabled {
 		runtimeDebug.SetGCPercent(10)
 		runtimeDebug.SetMemoryLimit(memoryLimit)
 		conntrack.KillerEnabled = true
 		conntrack.MemoryLimit = memoryLimit
+	} else {
+		runtimeDebug.SetGCPercent(100)
+		runtimeDebug.SetMemoryLimit(math.MaxInt64)
+		conntrack.KillerEnabled = false
+	}
 }