platform: Improve OOM killer for iOS

option/oom_killer.go

@@ -1,3 +1,14 @@
 package option
 
-type OOMKillerServiceOptions struct{}
+import (
+	"github.com/sagernet/sing/common/byteformats"
+	"github.com/sagernet/sing/common/json/badoption"
+)
+
+type OOMKillerServiceOptions struct {
+	MemoryLimit       *byteformats.MemoryBytes `json:"memory_limit,omitempty"`
+	SafetyMargin      *byteformats.MemoryBytes `json:"safety_margin,omitempty"`
+	MinInterval       badoption.Duration       `json:"min_interval,omitempty"`
+	MaxInterval       badoption.Duration       `json:"max_interval,omitempty"`
+	ChecksBeforeLimit int                      `json:"checks_before_limit,omitempty"`
+}