50 #include "services/threadService.hpp"
  51 #include "utilities/bytes.hpp"
  52 #include "logging/log.hpp"
  53 
  54 #define NOFAILOVER_MAJOR_VERSION                       51
  55 #define NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION  51
  56 #define STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION       52
  57 
  58 // Access to external entry for VerifyClassCodes - old byte code verifier
  59 
  60 extern "C" {
  61   typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint);
  62   typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint);
  63 }
  64 
  65 static void* volatile _verify_byte_codes_fn = NULL;
  66 
  67 static volatile jint _is_new_verify_byte_codes_fn = (jint) true;
  68 
  69 static void* verify_byte_codes_fn() {
  70   if (_verify_byte_codes_fn == NULL) {
  71     void *lib_handle = os::native_java_library();
  72     void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion");
  73     OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func);
  74     if (func == NULL) {
  75       OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false);
  76       func = os::dll_lookup(lib_handle, "VerifyClassCodes");
  77       OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func);
  78     }
  79   }
  80   return (void*)_verify_byte_codes_fn;
  81 }
  82 
  83 
  84 // Methods in Verifier
  85 
  86 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) {
  87   return (class_loader == NULL || !should_verify_class) ?
  88     BytecodeVerificationLocal : BytecodeVerificationRemote;
  89 }
  90 
  91 bool Verifier::relax_verify_for(oop loader) {
  92   bool trusted = java_lang_ClassLoader::is_trusted_loader(loader);
  93   bool need_verify =
  94     // verifyAll
  95     (BytecodeVerificationLocal && BytecodeVerificationRemote) ||

  50 #include "services/threadService.hpp"
  51 #include "utilities/bytes.hpp"
  52 #include "logging/log.hpp"
  53 
  54 #define NOFAILOVER_MAJOR_VERSION                       51
  55 #define NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION  51
  56 #define STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION       52
  57 
  58 // Access to external entry for VerifyClassCodes - old byte code verifier
  59 
  60 extern "C" {
  61   typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint);
  62   typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint);
  63 }
  64 
  65 static void* volatile _verify_byte_codes_fn = NULL;
  66 
  67 static volatile jint _is_new_verify_byte_codes_fn = (jint) true;
  68 
  69 static void* verify_byte_codes_fn() {
  70   if (OrderAccess::load_ptr_acquire(&_verify_byte_codes_fn) == NULL) {
  71     void *lib_handle = os::native_java_library();
  72     void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion");
  73     OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func);
  74     if (func == NULL) {
  75       _is_new_verify_byte_codes_fn = false;
  76       func = os::dll_lookup(lib_handle, "VerifyClassCodes");
  77       OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func);
  78     }
  79   }
  80   return (void*)_verify_byte_codes_fn;
  81 }
  82 
  83 
  84 // Methods in Verifier
  85 
  86 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) {
  87   return (class_loader == NULL || !should_verify_class) ?
  88     BytecodeVerificationLocal : BytecodeVerificationRemote;
  89 }
  90 
  91 bool Verifier::relax_verify_for(oop loader) {
  92   bool trusted = java_lang_ClassLoader::is_trusted_loader(loader);
  93   bool need_verify =
  94     // verifyAll
  95     (BytecodeVerificationLocal && BytecodeVerificationRemote) ||