1 files changed, 16 insertions, 0 deletions
diff --git a/runtime/class_linker.h b/runtime/class_linker.h
index 5597149178..73b3153c45 100644
--- a/runtime/class_linker.h
+++ b/runtime/class_linker.h
@@ -41,6 +41,7 @@
 #include "jni.h"
 #include "mirror/class.h"
 #include "mirror/object.h"
+#include "oat/jni_stub_hash_map.h"
 #include "oat/oat_file.h"
 #include "verifier/verifier_enums.h"
 
@@ -888,6 +889,17 @@ class EXPORT ClassLinker {
   ClassTable* GetBootClassTable() REQUIRES_SHARED(Locks::classlinker_classes_lock_) {
     return boot_class_table_.get();
   }
+  // Find a matching JNI stub from boot images that we could reuse as entrypoint.
+  const void* FindBootJniStub(ArtMethod* method)
+      REQUIRES_SHARED(Locks::mutator_lock_) {
+    return FindBootJniStub(JniStubKey(method));
+  }
+
+  const void* FindBootJniStub(uint32_t flags, std::string_view shorty) {
+    return FindBootJniStub(JniStubKey(flags, shorty));
+  }
+
+  const void* FindBootJniStub(JniStubKey key);
 
  protected:
   virtual bool InitializeClass(Thread* self,
@@ -1410,6 +1422,10 @@ class EXPORT ClassLinker {
   std::map<ArtMethod*, void*> critical_native_code_with_clinit_check_
       GUARDED_BY(critical_native_code_with_clinit_check_lock_);
 
+  // Load unique JNI stubs from boot images. If the subsequently loaded native methods could find a
+  // matching stub, then reuse it without JIT/AOT compilation.
+  JniStubHashMap<const void*> boot_image_jni_stubs_;
+
   std::unique_ptr<ClassHierarchyAnalysis> cha_;
 
   class FindVirtualMethodHolderVisitor;