8031819: Remove legacy jdk checks and code

Summary: Delete old jdk specific code.
Reviewed-by: dholmes, coleenp, zgu, lfoltan

hotspot/src/share/vm/classfile/classFileParser.cpp

@@ -4667,9 +4667,7 @@ bool ClassFileParser::has_illegal_visibility(jint flags) {
 }
 
 bool ClassFileParser::is_supported_version(u2 major, u2 minor) {
-  u2 max_version =
-    JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION :
-    (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION);
+  u2 max_version = JAVA_MAX_SUPPORTED_VERSION;
   return (major >= JAVA_MIN_SUPPORTED_VERSION) &&
          (major <= max_version) &&
          ((major != max_version) ||

hotspot/src/share/vm/classfile/classLoader.cpp

@@ -1126,7 +1126,7 @@ void ClassLoader::verify() {
 
 
 // JDK 1.3 version
-typedef struct real_jzentry13 {         /* Zip file entry */
+typedef struct real_jzentry {         /* Zip file entry */
     char *name;                 /* entry name */
     jint time;                  /* modification time */
     jint size;                  /* size of uncompressed data */
@@ -1135,9 +1135,9 @@ typedef struct real_jzentry13 {         /* Zip file entry */
     char *comment;              /* optional zip file comment */
     jbyte *extra;               /* optional extra data */
     jint pos;                   /* position of LOC header (if negative) or data */
-} real_jzentry13;
+} real_jzentry;
 
-typedef struct real_jzfile13 {  /* Zip file */
+typedef struct real_jzfile {  /* Zip file */
     char *name;                 /* zip file name */
     jint refs;                  /* number of active references */
     jint fd;                    /* open file descriptor */
@@ -1148,42 +1148,14 @@ typedef struct real_jzfile13 {  /* Zip file */
     jint total;                 /* total number of entries */
     unsigned short *table;      /* Hash chain heads: indexes into entries */
     jint tablelen;              /* number of hash eads */
-    real_jzfile13 *next;        /* next zip file in search list */
+    real_jzfile *next;        /* next zip file in search list */
     jzentry *cache;             /* we cache the most recently freed jzentry */
     /* Information on metadata names in META-INF directory */
     char **metanames;           /* array of meta names (may have null names) */
     jint metacount;             /* number of slots in metanames array */
     /* If there are any per-entry comments, they are in the comments array */
     char **comments;
-} real_jzfile13;
-
-// JDK 1.2 version
-typedef struct real_jzentry12 {  /* Zip file entry */
-    char *name;                  /* entry name */
-    jint time;                   /* modification time */
-    jint size;                   /* size of uncompressed data */
-    jint csize;                  /* size of compressed data (zero if uncompressed) */
-    jint crc;                    /* crc of uncompressed data */
-    char *comment;               /* optional zip file comment */
-    jbyte *extra;                /* optional extra data */
-    jint pos;                    /* position of LOC header (if negative) or data */
-    struct real_jzentry12 *next; /* next entry in hash table */
-} real_jzentry12;
-
-typedef struct real_jzfile12 {  /* Zip file */
-    char *name;                 /* zip file name */
-    jint refs;                  /* number of active references */
-    jint fd;                    /* open file descriptor */
-    void *lock;                 /* read lock */
-    char *comment;              /* zip file comment */
-    char *msg;                  /* zip error message */
-    real_jzentry12 *entries;    /* array of zip entries */
-    jint total;                 /* total number of entries */
-    real_jzentry12 **table;     /* hash table of entries */
-    jint tablelen;              /* number of buckets */
-    jzfile *next;               /* next zip file in search list */
-} real_jzfile12;
-
+} real_jzfile;
 
 void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) {
   // For now we only compile all methods in all classes in zip/jar files
@@ -1197,10 +1169,14 @@ bool ClassPathDirEntry::is_rt_jar() {
 }
 
 void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) {
-  if (JDK_Version::is_jdk12x_version()) {
-    compile_the_world12(loader, THREAD);
-  } else {
-    compile_the_world13(loader, THREAD);
+  real_jzfile* zip = (real_jzfile*) _zip;
+  tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name);
+  tty->cr();
+  // Iterate over all entries in zip file
+  for (int n = 0; ; n++) {
+    real_jzentry * ze = (real_jzentry *)((*GetNextEntry)(_zip, n));
+    if (ze == NULL) break;
+    ClassLoader::compile_the_world_in(ze->name, loader, CHECK);
   }
   if (HAS_PENDING_EXCEPTION) {
     if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) {
@@ -1213,54 +1189,8 @@ void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) {
   }
 }
 
-// Version that works for JDK 1.3.x
-void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) {
-  real_jzfile13* zip = (real_jzfile13*) _zip;
-  tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name);
-  tty->cr();
-  // Iterate over all entries in zip file
-  for (int n = 0; ; n++) {
-    real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n));
-    if (ze == NULL) break;
-    ClassLoader::compile_the_world_in(ze->name, loader, CHECK);
-  }
-}
-
-
-// Version that works for JDK 1.2.x
-void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) {
-  real_jzfile12* zip = (real_jzfile12*) _zip;
-  tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name);
-  tty->cr();
-  // Iterate over all entries in zip file
-  for (int n = 0; ; n++) {
-    real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n));
-    if (ze == NULL) break;
-    ClassLoader::compile_the_world_in(ze->name, loader, CHECK);
-  }
-}
-
 bool ClassPathZipEntry::is_rt_jar() {
-  if (JDK_Version::is_jdk12x_version()) {
-    return is_rt_jar12();
-  } else {
-    return is_rt_jar13();
-  }
-}
-
-// JDK 1.3 version
-bool ClassPathZipEntry::is_rt_jar13() {
-  real_jzfile13* zip = (real_jzfile13*) _zip;
-  int len = (int)strlen(zip->name);
-  // Check whether zip name ends in "rt.jar"
-  // This will match other archives named rt.jar as well, but this is
-  // only used for debugging.
-  return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0);
-}
-
-// JDK 1.2 version
-bool ClassPathZipEntry::is_rt_jar12() {
-  real_jzfile12* zip = (real_jzfile12*) _zip;
+  real_jzfile* zip = (real_jzfile*) _zip;
   int len = (int)strlen(zip->name);
   // Check whether zip name ends in "rt.jar"
   // This will match other archives named rt.jar as well, but this is

hotspot/src/share/vm/classfile/classLoader.hpp

 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -111,11 +111,7 @@ class ClassPathZipEntry: public ClassPathEntry {
   void contents_do(void f(const char* name, void* context), void* context);
   // Debugging
   NOT_PRODUCT(void compile_the_world(Handle loader, TRAPS);)
-  NOT_PRODUCT(void compile_the_world12(Handle loader, TRAPS);) // JDK 1.2 version
-  NOT_PRODUCT(void compile_the_world13(Handle loader, TRAPS);) // JDK 1.3 version
   NOT_PRODUCT(bool is_rt_jar();)
-  NOT_PRODUCT(bool is_rt_jar12();)
-  NOT_PRODUCT(bool is_rt_jar13();)
 };
 
 

hotspot/src/share/vm/classfile/javaClasses.cpp

@@ -857,9 +857,7 @@ void java_lang_Class::compute_offsets() {
 }
 
 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
-  if (!JDK_Version::is_gte_jdk15x_version()
-      || classRedefinedCount_offset == -1) {
-    // The classRedefinedCount field is only present starting in 1.5.
+  if (classRedefinedCount_offset == -1) {
     // If we don't have an offset for it then just return -1 as a marker.
     return -1;
   }
@@ -868,9 +866,7 @@ int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
 }
 
 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
-  if (!JDK_Version::is_gte_jdk15x_version()
-      || classRedefinedCount_offset == -1) {
-    // The classRedefinedCount field is only present starting in 1.5.
+  if (classRedefinedCount_offset == -1) {
     // If we don't have an offset for it then nothing to set.
     return;
   }
@@ -1000,9 +996,7 @@ oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
 
 
 jlong java_lang_Thread::stackSize(oop java_thread) {
-  // The stackSize field is only present starting in 1.4
   if (_stackSize_offset > 0) {
-    assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
     return java_thread->long_field(_stackSize_offset);
   } else {
     return 0;
@@ -1078,7 +1072,7 @@ bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
 
 
 const char* java_lang_Thread::thread_status_name(oop java_thread) {
-  assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
+  assert(_thread_status_offset != 0, "Must have thread status");
   ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
   switch (status) {
     case NEW                      : return "NEW";
@@ -1217,7 +1211,6 @@ void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
 }
 
 void java_lang_Throwable::clear_stacktrace(oop throwable) {
-  assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
   set_stacktrace(throwable, NULL);
 }
 
@@ -1548,12 +1541,9 @@ void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle met
   // Start out by clearing the backtrace for this object, in case the VM
   // runs out of memory while allocating the stack trace
   set_backtrace(throwable(), NULL);
-  if (JDK_Version::is_gte_jdk14x_version()) {
-    // New since 1.4, clear lazily constructed Java level stacktrace if
-    // refilling occurs
-    // This is unnecessary in 1.7+ but harmless
-    clear_stacktrace(throwable());
-  }
+  // Clear lazily constructed Java level stacktrace if refilling occurs
+  // This is unnecessary in 1.7+ but harmless
+  clear_stacktrace(throwable());
 
   int max_depth = MaxJavaStackTraceDepth;
   JavaThread* thread = (JavaThread*)THREAD;
@@ -1739,13 +1729,9 @@ void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle t
     if (chunk_count >= max_chunks) break;
   }
 
-  // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
-  // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
-  // can be removed in a JDK using this JVM version
-  if (JDK_Version::is_gte_jdk17x_version()) {
-      java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
-      assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
-  }
+  // We support the Throwable immutability protocol defined for Java 7.
+  java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
+  assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
 }
 
 
@@ -3022,8 +3008,7 @@ bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
 // based on non-null field
 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
-  if (!JDK_Version::is_gte_jdk17x_version()
-     || parallelCapable_offset == -1) {
+  if (parallelCapable_offset == -1) {
      // Default for backward compatibility is false
      return false;
   }
@@ -3219,7 +3204,6 @@ void java_nio_Buffer::compute_offsets() {
 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
   if (_owner_offset != 0) return;
 
-  assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
   SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
   Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
   compute_offset(_owner_offset, k,
@@ -3309,15 +3293,10 @@ void JavaClasses::compute_offsets() {
   java_lang_reflect_Method::compute_offsets();
   java_lang_reflect_Constructor::compute_offsets();
   java_lang_reflect_Field::compute_offsets();
-  if (JDK_Version::is_gte_jdk14x_version()) {
-    java_nio_Buffer::compute_offsets();
-  }
-  if (JDK_Version::is_gte_jdk15x_version()) {
-    sun_reflect_ConstantPool::compute_offsets();
-    sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
-  }
-  if (JDK_Version::is_gte_jdk18x_version())
-    java_lang_reflect_Parameter::compute_offsets();
+  java_nio_Buffer::compute_offsets();
+  sun_reflect_ConstantPool::compute_offsets();
+  sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
+  java_lang_reflect_Parameter::compute_offsets();
 
   // generated interpreter code wants to know about the offsets we just computed:
   AbstractAssembler::update_delayed_values();
@@ -3502,7 +3481,7 @@ void JavaClasses::check_offsets() {
   // into merlin "for some time."  Without it, the vm will fail with early
   // merlin builds.
 
-  if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
+  if (CheckAssertionStatusDirectives) {
     const char* nm = "java/lang/AssertionStatusDirectives";
     const char* sig = "[Ljava/lang/String;";
     CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);

hotspot/src/share/vm/classfile/systemDictionary.cpp

@@ -1754,8 +1754,6 @@ void SystemDictionary::methods_do(void f(Method*)) {
 // Lazily load klasses
 
 void SystemDictionary::load_abstract_ownable_synchronizer_klass(TRAPS) {
-  assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
-
   // if multiple threads calling this function, only one thread will load
   // the class.  The other threads will find the loaded version once the
   // class is loaded.

hotspot/src/share/vm/classfile/systemDictionary.hpp

@@ -139,14 +139,13 @@ class Ticks;
   do_klass(reflect_Constructor_klass,                   java_lang_reflect_Constructor,             Pre                 ) \
                                                                                                                          \
   /* NOTE: needed too early in bootstrapping process to have checks based on JDK version */                              \
-  /* Universe::is_gte_jdk14x_version() is not set up by this point. */                                                   \
   /* It's okay if this turns out to be NULL in non-1.4 JDKs. */                                                          \
   do_klass(reflect_MagicAccessorImpl_klass,             sun_reflect_MagicAccessorImpl,             Opt                 ) \
-  do_klass(reflect_MethodAccessorImpl_klass,            sun_reflect_MethodAccessorImpl,            Opt_Only_JDK14NewRef) \
-  do_klass(reflect_ConstructorAccessorImpl_klass,       sun_reflect_ConstructorAccessorImpl,       Opt_Only_JDK14NewRef) \
+  do_klass(reflect_MethodAccessorImpl_klass,            sun_reflect_MethodAccessorImpl,            Pre                 ) \
+  do_klass(reflect_ConstructorAccessorImpl_klass,       sun_reflect_ConstructorAccessorImpl,       Pre                 ) \
   do_klass(reflect_DelegatingClassLoader_klass,         sun_reflect_DelegatingClassLoader,         Opt                 ) \
-  do_klass(reflect_ConstantPool_klass,                  sun_reflect_ConstantPool,                  Opt_Only_JDK15      ) \
-  do_klass(reflect_UnsafeStaticFieldAccessorImpl_klass, sun_reflect_UnsafeStaticFieldAccessorImpl, Opt_Only_JDK15      ) \
+  do_klass(reflect_ConstantPool_klass,                  sun_reflect_ConstantPool,                  Opt                 ) \
+  do_klass(reflect_UnsafeStaticFieldAccessorImpl_klass, sun_reflect_UnsafeStaticFieldAccessorImpl, Opt                 ) \
   do_klass(reflect_CallerSensitive_klass,               sun_reflect_CallerSensitive,               Opt                 ) \
                                                                                                                          \
   /* support for dynamic typing; it's OK if these are NULL in earlier JDKs */                                            \
@@ -169,7 +168,6 @@ class Ticks;
                                                                                                                          \
   /* It's NULL in non-1.4 JDKs. */                                                                                       \
   do_klass(StackTraceElement_klass,                     java_lang_StackTraceElement,               Opt                 ) \
-  /* Universe::is_gte_jdk14x_version() is not set up by this point. */                                                   \
   /* It's okay if this turns out to be NULL in non-1.4 JDKs. */                                                          \
   do_klass(nio_Buffer_klass,                            java_nio_Buffer,                           Opt                 ) \
                                                                                                                          \
@@ -209,10 +207,8 @@ class SystemDictionary : AllStatic {
     // Options after this point will use resolve_or_null instead.
 
     Opt,                        // preload tried; NULL if not present
-    Opt_Only_JDK14NewRef,       // preload tried; use only with NewReflection
-    Opt_Only_JDK15,             // preload tried; use only with JDK1.5+
     OPTION_LIMIT,
-    CEIL_LG_OPTION_LIMIT = 4    // OPTION_LIMIT <= (1<<CEIL_LG_OPTION_LIMIT)
+    CEIL_LG_OPTION_LIMIT = 2    // OPTION_LIMIT <= (1<<CEIL_LG_OPTION_LIMIT)
   };
 
 
@@ -385,15 +381,6 @@ public:
 
   static Klass* check_klass_Pre(       Klass* k) { return check_klass(k); }
   static Klass* check_klass_Opt(       Klass* k) { return k; }
-  static Klass* check_klass_Opt_Only_JDK15(Klass* k) {
-    assert(JDK_Version::is_gte_jdk15x_version(), "JDK 1.5 only");
-    return k;
-  }
-  static Klass* check_klass_Opt_Only_JDK14NewRef(Klass* k) {
-    assert(JDK_Version::is_gte_jdk14x_version(), "JDK 1.4 only");
-    // despite the optional loading, if you use this it must be present:
-    return check_klass(k);
-  }
 
   static bool initialize_wk_klass(WKID id, int init_opt, TRAPS);
   static void initialize_wk_klasses_until(WKID limit_id, WKID &start_id, TRAPS);

hotspot/src/share/vm/classfile/vmSymbols.hpp

@@ -320,7 +320,6 @@
   template(reference_discovered_name,                 "discovered")                               \
   template(run_finalization_name,                     "runFinalization")                          \
   template(run_finalizers_on_exit_name,               "runFinalizersOnExit")                      \
-  template(uncaughtException_name,                    "uncaughtException")                        \
   template(dispatchUncaughtException_name,            "dispatchUncaughtException")                \
   template(initializeSystemClass_name,                "initializeSystemClass")                    \
   template(loadClass_name,                            "loadClass")                                \

hotspot/src/share/vm/interpreter/linkResolver.cpp

@@ -945,12 +945,8 @@ void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method
     Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ?
                                   current_klass() :
                                   InstanceKlass::cast(current_klass())->host_klass();
-    // As of the fix for 4486457 we disable verification for all of the
-    // dynamically-generated bytecodes associated with the 1.4
-    // reflection implementation, not just those associated with
-    // sun/reflect/SerializationConstructorAccessor.
-    bool is_reflect = JDK_Version::is_gte_jdk14x_version() &&
-                      klass_to_check->is_subclass_of(
+    // Disable verification for the dynamically-generated reflection bytecodes.
+    bool is_reflect = klass_to_check->is_subclass_of(
                         SystemDictionary::reflect_MagicAccessorImpl_klass());
 
     if (!is_reflect &&

hotspot/src/share/vm/memory/universe.cpp

@@ -1000,9 +1000,6 @@ void universe2_init() {
 }
 
 
-// This function is defined in JVM.cpp
-extern void initialize_converter_functions();
-
 bool universe_post_init() {
   assert(!is_init_completed(), "Error: initialization not yet completed!");
   Universe::_fully_initialized = true;
@@ -1144,11 +1141,6 @@ bool universe_post_init() {
       SystemDictionary::ProtectionDomain_klass(), m);;
   }
 
-  // The following is initializing converter functions for serialization in
-  // JVM.cpp. If we clean up the StrictMath code above we may want to find
-  // a better solution for this as well.
-  initialize_converter_functions();
-
   // This needs to be done before the first scavenge/gc, since
   // it's an input to soft ref clearing policy.
   {

hotspot/src/share/vm/oops/method.cpp

@@ -1023,8 +1023,7 @@ bool Method::is_ignored_by_security_stack_walk() const {
     // This is Method.invoke() -- ignore it
     return true;
   }
-  if (JDK_Version::is_gte_jdk14x_version() &&
-      method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass())) {
+  if (method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass())) {
     // This is an auxilary frame -- ignore it
     return true;
   }

hotspot/src/share/vm/prims/jvm.cpp

@@ -3923,50 +3923,6 @@ JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) {
 }
 
 
-// Support for Serialization
-
-typedef jfloat  (JNICALL *IntBitsToFloatFn  )(JNIEnv* env, jclass cb, jint    value);
-typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong   value);
-typedef jint    (JNICALL *FloatToIntBitsFn  )(JNIEnv* env, jclass cb, jfloat  value);
-typedef jlong   (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value);
-
-static IntBitsToFloatFn   int_bits_to_float_fn   = NULL;
-static LongBitsToDoubleFn long_bits_to_double_fn = NULL;
-static FloatToIntBitsFn   float_to_int_bits_fn   = NULL;
-static DoubleToLongBitsFn double_to_long_bits_fn = NULL;
-
-
-void initialize_converter_functions() {
-  if (JDK_Version::is_gte_jdk14x_version()) {
-    // These functions only exist for compatibility with 1.3.1 and earlier
-    return;
-  }
-
-  // called from universe_post_init()
-  assert(
-    int_bits_to_float_fn   == NULL &&
-    long_bits_to_double_fn == NULL &&
-    float_to_int_bits_fn   == NULL &&
-    double_to_long_bits_fn == NULL ,
-    "initialization done twice"
-  );
-  // initialize
-  int_bits_to_float_fn   = CAST_TO_FN_PTR(IntBitsToFloatFn  , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat"  , "(I)F"));
-  long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D"));
-  float_to_int_bits_fn   = CAST_TO_FN_PTR(FloatToIntBitsFn  , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits"  , "(F)I"));
-  double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J"));
-  // verify
-  assert(
-    int_bits_to_float_fn   != NULL &&
-    long_bits_to_double_fn != NULL &&
-    float_to_int_bits_fn   != NULL &&
-    double_to_long_bits_fn != NULL ,
-    "initialization failed"
-  );
-}
-
-
-
 // Shared JNI/JVM entry points //////////////////////////////////////////////////////////////
 
 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) {

hotspot/src/share/vm/prims/unsafe.cpp

@@ -185,64 +185,7 @@ jint Unsafe_invocation_key_to_method_slot(jint key) {
 
 // Get/SetObject must be special-cased, since it works with handles.
 
-// The xxx140 variants for backward compatibility do not allow a full-width offset.
-UNSAFE_ENTRY(jobject, Unsafe_GetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset))
-  UnsafeWrapper("Unsafe_GetObject");
-  if (obj == NULL)  THROW_0(vmSymbols::java_lang_NullPointerException());
-  GET_OOP_FIELD(obj, offset, v)
-  jobject ret = JNIHandles::make_local(env, v);
-#if INCLUDE_ALL_GCS
-  // We could be accessing the referent field in a reference
-  // object. If G1 is enabled then we need to register a non-null
-  // referent with the SATB barrier.
-  if (UseG1GC) {
-    bool needs_barrier = false;
-
-    if (ret != NULL) {
-      if (offset == java_lang_ref_Reference::referent_offset) {
-        oop o = JNIHandles::resolve_non_null(obj);
-        Klass* k = o->klass();
-        if (InstanceKlass::cast(k)->reference_type() != REF_NONE) {
-          assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
-          needs_barrier = true;
-        }
-      }
-    }
-
-    if (needs_barrier) {
-      oop referent = JNIHandles::resolve(ret);
-      G1SATBCardTableModRefBS::enqueue(referent);
-    }
-  }
-#endif // INCLUDE_ALL_GCS
-  return ret;
-UNSAFE_END
-
-UNSAFE_ENTRY(void, Unsafe_SetObject140(JNIEnv *env, jobject unsafe, jobject obj, jint offset, jobject x_h))
-  UnsafeWrapper("Unsafe_SetObject");
-  if (obj == NULL)  THROW(vmSymbols::java_lang_NullPointerException());
-  oop x = JNIHandles::resolve(x_h);
-  //SET_FIELD(obj, offset, oop, x);
-  oop p = JNIHandles::resolve(obj);
-  if (UseCompressedOops) {
-    if (x != NULL) {
-      // If there is a heap base pointer, we are obliged to emit a store barrier.
-      oop_store((narrowOop*)index_oop_from_field_offset_long(p, offset), x);
-    } else {
-      narrowOop n = oopDesc::encode_heap_oop_not_null(x);
-      *(narrowOop*)index_oop_from_field_offset_long(p, offset) = n;
-    }
-  } else {
-    if (x != NULL) {
-      // If there is a heap base pointer, we are obliged to emit a store barrier.
-      oop_store((oop*)index_oop_from_field_offset_long(p, offset), x);
-    } else {
-      *(oop*)index_oop_from_field_offset_long(p, offset) = x;
-    }
-  }
-UNSAFE_END
-
-// The normal variants allow a null base pointer with an arbitrary address.
+// These functions allow a null base pointer with an arbitrary address.
 // But if the base pointer is non-null, the offset should make some sense.
 // That is, it should be in the range [0, MAX_OBJECT_SIZE].
 UNSAFE_ENTRY(jobject, Unsafe_GetObject(JNIEnv *env, jobject unsafe, jobject obj, jlong offset))
@@ -1350,9 +1293,6 @@ UNSAFE_END
 
 // These are the methods for 1.4.0
 static JNINativeMethod methods_140[] = {
-    {CC"getObject",        CC"("OBJ"I)"OBJ"",   FN_PTR(Unsafe_GetObject140)},
-    {CC"putObject",        CC"("OBJ"I"OBJ")V",  FN_PTR(Unsafe_SetObject140)},
-
     DECLARE_GETSETOOP_140(Boolean, Z),
     DECLARE_GETSETOOP_140(Byte, B),
     DECLARE_GETSETOOP_140(Short, S),

hotspot/src/share/vm/runtime/arguments.cpp

@@ -222,10 +222,8 @@ void Arguments::init_version_specific_system_properties() {
   const char* spec_vendor = "Sun Microsystems Inc.";
   uint32_t spec_version = 0;
 
-  if (JDK_Version::is_gte_jdk17x_version()) {
-    spec_vendor = "Oracle Corporation";
-    spec_version = JDK_Version::current().major_version();
-  }
+  spec_vendor = "Oracle Corporation";
+  spec_version = JDK_Version::current().major_version();
   jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version);
 
   PropertyList_add(&_system_properties,
@@ -3695,14 +3693,6 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
     PrintGC = true;
   }
 
-  if (!JDK_Version::is_gte_jdk18x_version()) {
-    // To avoid changing the log format for 7 updates this flag is only
-    // true by default in JDK8 and above.
-    if (FLAG_IS_DEFAULT(PrintGCCause)) {
-      FLAG_SET_DEFAULT(PrintGCCause, false);
-    }
-  }
-
   // Set object alignment values.
   set_object_alignment();
 

hotspot/src/share/vm/runtime/java.hpp

 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -197,58 +197,6 @@ class JDK_Version VALUE_OBJ_CLASS_SPEC {
     _runtime_version = version;
   }
 
-  // Convenience methods for queries on the current major/minor version
-  static bool is_jdk12x_version() {
-    return current().compare_major(2) == 0;
-  }
-
-  static bool is_jdk13x_version() {
-    return current().compare_major(3) == 0;
-  }
-
-  static bool is_jdk14x_version() {
-    return current().compare_major(4) == 0;
-  }
-
-  static bool is_jdk15x_version() {
-    return current().compare_major(5) == 0;
-  }
-
-  static bool is_jdk16x_version() {
-    return current().compare_major(6) == 0;
-  }
-
-  static bool is_jdk17x_version() {
-    return current().compare_major(7) == 0;
-  }
-
-  static bool is_jdk18x_version() {
-    return current().compare_major(8) == 0;
-  }
-
-  static bool is_gte_jdk13x_version() {
-    return current().compare_major(3) >= 0;
-  }
-
-  static bool is_gte_jdk14x_version() {
-    return current().compare_major(4) >= 0;
-  }
-
-  static bool is_gte_jdk15x_version() {
-    return current().compare_major(5) >= 0;
-  }
-
-  static bool is_gte_jdk16x_version() {
-    return current().compare_major(6) >= 0;
-  }
-
-  static bool is_gte_jdk17x_version() {
-    return current().compare_major(7) >= 0;
-  }
-
-  static bool is_gte_jdk18x_version() {
-    return current().compare_major(8) >= 0;
-  }
 };
 
 #endif // SHARE_VM_RUNTIME_JAVA_HPP

hotspot/src/share/vm/runtime/reflection.cpp

@@ -410,49 +410,6 @@ oop Reflection::array_component_type(oop mirror, TRAPS) {
 }
 
 
-bool Reflection::reflect_check_access(Klass* field_class, AccessFlags acc, Klass* target_class, bool is_method_invoke, TRAPS) {
-  // field_class  : declaring class
-  // acc          : declared field access
-  // target_class : for protected
-
-  // Check if field or method is accessible to client.  Throw an
-  // IllegalAccessException and return false if not.
-
-  // The "client" is the class associated with the nearest real frame
-  // getCallerClass already skips Method.invoke frames, so pass 0 in
-  // that case (same as classic).
-  ResourceMark rm(THREAD);
-  assert(THREAD->is_Java_thread(), "sanity check");
-  Klass* client_class = ((JavaThread *)THREAD)->security_get_caller_class(is_method_invoke ? 0 : 1);
-
-  if (client_class != field_class) {
-    if (!verify_class_access(client_class, field_class, false)
-        || !verify_field_access(client_class,
-                                field_class,
-                                field_class,
-                                acc,
-                                false)) {
-      THROW_(vmSymbols::java_lang_IllegalAccessException(), false);
-    }
-  }
-
-  // Additional test for protected members: JLS 6.6.2
-
-  if (acc.is_protected()) {
-    if (target_class != client_class) {
-      if (!is_same_class_package(client_class, field_class)) {
-        if (!target_class->is_subclass_of(client_class)) {
-          THROW_(vmSymbols::java_lang_IllegalAccessException(), false);
-        }
-      }
-    }
-  }
-
-  // Passed all tests
-  return true;
-}
-
-
 bool Reflection::verify_class_access(Klass* current_class, Klass* new_class, bool classloader_only) {
   // Verify that current_class can access new_class.  If the classloader_only
   // flag is set, we automatically allow any accesses in which current_class
@@ -463,10 +420,9 @@ bool Reflection::verify_class_access(Klass* current_class, Klass* new_class, boo
       is_same_class_package(current_class, new_class)) {
     return true;
   }
-  // New (1.4) reflection implementation. Allow all accesses from
-  // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
-  if (   JDK_Version::is_gte_jdk14x_version()
-      && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
+  // Allow all accesses from sun/reflect/MagicAccessorImpl subclasses to
+  // succeed trivially.
+  if (current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
     return true;
   }
 
@@ -567,10 +523,9 @@ bool Reflection::verify_field_access(Klass* current_class,
     return true;
   }
 
-  // New (1.4) reflection implementation. Allow all accesses from
-  // sun/reflect/MagicAccessorImpl subclasses to succeed trivially.
-  if (   JDK_Version::is_gte_jdk14x_version()
-      && current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
+  // Allow all accesses from sun/reflect/MagicAccessorImpl subclasses to
+  // succeed trivially.
+  if (current_class->is_subclass_of(SystemDictionary::reflect_MagicAccessorImpl_klass())) {
     return true;
   }
 
@@ -707,12 +662,10 @@ Handle Reflection::new_type(Symbol* signature, KlassHandle k, TRAPS) {
 
 
 oop Reflection::new_method(methodHandle method, bool for_constant_pool_access, TRAPS) {
-  // In jdk1.2.x, getMethods on an interface erroneously includes <clinit>, thus the complicated assert.
-  // Also allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
+  // Allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
   assert(!method()->is_initializer() ||
-         (for_constant_pool_access && method()->is_static()) ||
-         (method()->name() == vmSymbols::class_initializer_name()
-    && method()->method_holder()->is_interface() && JDK_Version::is_jdk12x_version()), "should call new_constructor instead");
+         (for_constant_pool_access && method()->is_static()),
+         "should call new_constructor instead");
   instanceKlassHandle holder (THREAD, method->method_holder());
   int slot = method->method_idnum();
 
@@ -978,22 +931,6 @@ oop Reflection::invoke(instanceKlassHandle klass, methodHandle reflected_method,
                                                         reflected_method->signature()));
   }
 
-  // In the JDK 1.4 reflection implementation, the security check is
-  // done at the Java level
-  if (!JDK_Version::is_gte_jdk14x_version()) {
-
-  // Access checking (unless overridden by Method)
-  if (!override) {
-    if (!(klass->is_public() && reflected_method->is_public())) {
-      bool access = Reflection::reflect_check_access(klass(), reflected_method->access_flags(), target_klass(), is_method_invoke, CHECK_NULL);
-      if (!access) {
-        return NULL; // exception
-      }
-    }
-  }
-
-  } // !Universe::is_gte_jdk14x_version()
-
   assert(ptypes->is_objArray(), "just checking");
   int args_len = args.is_null() ? 0 : args->length();
   // Check number of arguments

hotspot/src/share/vm/runtime/reflection.hpp

@@ -44,9 +44,6 @@ class FieldStream;
 
 class Reflection: public AllStatic {
  private:
-  // Access checking
-  static bool reflect_check_access(Klass* field_class, AccessFlags acc, Klass* target_class, bool is_method_invoke, TRAPS);
-
   // Conversion
   static Klass* basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS);
   static oop      basic_type_arrayklass_to_mirror(Klass* basic_type_arrayklass, TRAPS);

hotspot/src/share/vm/runtime/reflectionUtils.cpp

 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -76,15 +76,10 @@ void FilteredFieldsMap::initialize() {
   int offset;
   offset = java_lang_Throwable::get_backtrace_offset();
   _filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset));
-  // The latest version of vm may be used with old jdk.
-  if (JDK_Version::is_gte_jdk16x_version()) {
-    // The following class fields do not exist in
-    // previous version of jdk.
-    offset = sun_reflect_ConstantPool::oop_offset();
-    _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset));
-    offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset();
-    _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset));
-  }
+  offset = sun_reflect_ConstantPool::oop_offset();
+  _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset));
+  offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset();
+  _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset));
 }
 
 int FilteredFieldStream::field_count() {

hotspot/src/share/vm/runtime/serviceThread.cpp

 /*
- * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -41,8 +41,7 @@ void ServiceThread::initialize() {
   instanceKlassHandle klass (THREAD,  SystemDictionary::Thread_klass());
   instanceHandle thread_oop = klass->allocate_instance_handle(CHECK);
 
-  const char* name = JDK_Version::is_gte_jdk17x_version() ?
-      "Service Thread" : "Low Memory Detector";
+  const char* name = "Service Thread";
 
   Handle string = java_lang_String::create_from_str(name, CHECK);
 

hotspot/src/share/vm/runtime/thread.cpp

@@ -1738,55 +1738,26 @@ void JavaThread::exit(bool destroy_vm, ExitType exit_type) {
 
     CLEAR_PENDING_EXCEPTION;
   }
-  // FIXIT: The is_null check is only so it works better on JDK1.2 VM's. This
-  // has to be fixed by a runtime query method
-  if (!destroy_vm || JDK_Version::is_jdk12x_version()) {
-    // JSR-166: change call from from ThreadGroup.uncaughtException to
-    // java.lang.Thread.dispatchUncaughtException
+  if (!destroy_vm) {
     if (uncaught_exception.not_null()) {
-      Handle group(this, java_lang_Thread::threadGroup(threadObj()));
-      {
-        EXCEPTION_MARK;
-        // Check if the method Thread.dispatchUncaughtException() exists. If so
-        // call it.  Otherwise we have an older library without the JSR-166 changes,
-        // so call ThreadGroup.uncaughtException()
-        KlassHandle recvrKlass(THREAD, threadObj->klass());
-        CallInfo callinfo;
-        KlassHandle thread_klass(THREAD, SystemDictionary::Thread_klass());
-        LinkResolver::resolve_virtual_call(callinfo, threadObj, recvrKlass, thread_klass,
-                                           vmSymbols::dispatchUncaughtException_name(),
-                                           vmSymbols::throwable_void_signature(),
-                                           KlassHandle(), false, false, THREAD);
+      EXCEPTION_MARK;
+      // Call method Thread.dispatchUncaughtException().
+      KlassHandle thread_klass(THREAD, SystemDictionary::Thread_klass());
+      JavaValue result(T_VOID);
+      JavaCalls::call_virtual(&result,
+                              threadObj, thread_klass,
+                              vmSymbols::dispatchUncaughtException_name(),
+                              vmSymbols::throwable_void_signature(),
+                              uncaught_exception,
+                              THREAD);
+      if (HAS_PENDING_EXCEPTION) {
+        ResourceMark rm(this);
+        jio_fprintf(defaultStream::error_stream(),
+              "\nException: %s thrown from the UncaughtExceptionHandler"
+              " in thread \"%s\"\n",
+              pending_exception()->klass()->external_name(),
+              get_thread_name());
         CLEAR_PENDING_EXCEPTION;
-        methodHandle method = callinfo.selected_method();
-        if (method.not_null()) {
-          JavaValue result(T_VOID);
-          JavaCalls::call_virtual(&result,
-                                  threadObj, thread_klass,
-                                  vmSymbols::dispatchUncaughtException_name(),
-                                  vmSymbols::throwable_void_signature(),
-                                  uncaught_exception,
-                                  THREAD);
-        } else {
-          KlassHandle thread_group(THREAD, SystemDictionary::ThreadGroup_klass());
-          JavaValue result(T_VOID);
-          JavaCalls::call_virtual(&result,
-                                  group, thread_group,
-                                  vmSymbols::uncaughtException_name(),
-                                  vmSymbols::thread_throwable_void_signature(),
-                                  threadObj,           // Arg 1
-                                  uncaught_exception,  // Arg 2
-                                  THREAD);
-        }
-        if (HAS_PENDING_EXCEPTION) {
-          ResourceMark rm(this);
-          jio_fprintf(defaultStream::error_stream(),
-                "\nException: %s thrown from the UncaughtExceptionHandler"
-                " in thread \"%s\"\n",
-                pending_exception()->klass()->external_name(),
-                get_thread_name());
-          CLEAR_PENDING_EXCEPTION;
-        }
       }
     }
 
@@ -2848,7 +2819,7 @@ void JavaThread::print_on(outputStream *st) const {
   Thread::print_on(st);
   // print guess for valid stack memory region (assume 4K pages); helps lock debugging
   st->print_cr("[" INTPTR_FORMAT "]", (intptr_t)last_Java_sp() & ~right_n_bits(12));
-  if (thread_oop != NULL && JDK_Version::is_gte_jdk15x_version()) {
+  if (thread_oop != NULL) {
     st->print_cr("   java.lang.Thread.State: %s", java_lang_Thread::thread_status_name(thread_oop));
   }
 #ifndef PRODUCT
@@ -3948,15 +3919,8 @@ bool Threads::destroy_vm() {
   }
   os::wait_for_keypress_at_exit();
 
-  if (JDK_Version::is_jdk12x_version()) {
-    // We are the last thread running, so check if finalizers should be run.
-    // For 1.3 or later this is done in thread->invoke_shutdown_hooks()
-    HandleMark rm(thread);
-    Universe::run_finalizers_on_exit();
-  } else {
-    // run Java level shutdown hooks
-    thread->invoke_shutdown_hooks();
-  }
+  // run Java level shutdown hooks
+  thread->invoke_shutdown_hooks();
 
   before_exit(thread);
 

hotspot/src/share/vm/runtime/vframe.cpp

@@ -480,9 +480,8 @@ void vframeStreamCommon::skip_prefixed_method_and_wrappers() {
 
 void vframeStreamCommon::skip_reflection_related_frames() {
   while (!at_end() &&
-         (JDK_Version::is_gte_jdk14x_version() &&
           (method()->method_holder()->is_subclass_of(SystemDictionary::reflect_MethodAccessorImpl_klass()) ||
-           method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass())))) {
+           method()->method_holder()->is_subclass_of(SystemDictionary::reflect_ConstructorAccessorImpl_klass()))) {
     next();
   }
 }

hotspot/src/share/vm/runtime/vm_operations.cpp

@@ -184,9 +184,7 @@ bool VM_PrintThreads::doit_prologue() {
   assert(Thread::current()->is_Java_thread(), "just checking");
 
   // Make sure AbstractOwnableSynchronizer is loaded
-  if (JDK_Version::is_gte_jdk16x_version()) {
-    java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current());
-  }
+  java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current());
 
   // Get Heap_lock if concurrent locks will be dumped
   if (_print_concurrent_locks) {
@@ -225,7 +223,7 @@ bool VM_FindDeadlocks::doit_prologue() {
   assert(Thread::current()->is_Java_thread(), "just checking");
 
   // Load AbstractOwnableSynchronizer class
-  if (_concurrent_locks && JDK_Version::is_gte_jdk16x_version()) {
+  if (_concurrent_locks) {
     java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current());
   }
 
@@ -283,9 +281,7 @@ bool VM_ThreadDump::doit_prologue() {
   assert(Thread::current()->is_Java_thread(), "just checking");
 
   // Load AbstractOwnableSynchronizer class before taking thread snapshots
-  if (JDK_Version::is_gte_jdk16x_version()) {
-    java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current());
-  }
+  java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(JavaThread::current());
 
   if (_with_locked_synchronizers) {
     // Acquire Heap_lock to dump concurrent locks

hotspot/src/share/vm/runtime/vm_version.cpp

@@ -160,8 +160,7 @@ const char* Abstract_VM_Version::vm_vendor() {
 #ifdef VENDOR
   return XSTR(VENDOR);
 #else
-  return JDK_Version::is_gte_jdk17x_version() ?
-    "Oracle Corporation" : "Sun Microsystems Inc.";
+  return "Oracle Corporation";
 #endif
 }
 

hotspot/src/share/vm/services/management.cpp

@@ -1229,10 +1229,8 @@ JVM_ENTRY(jint, jmm_GetThreadInfo(JNIEnv *env, jlongArray ids, jint maxDepth, jo
                "The length of the given ThreadInfo array does not match the length of the given array of thread IDs", -1);
   }
 
-  if (JDK_Version::is_gte_jdk16x_version()) {
-    // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
-    java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0);
-  }
+  // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
+  java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_0);
 
   // Must use ThreadDumpResult to store the ThreadSnapshot.
   // GC may occur after the thread snapshots are taken but before
@@ -1303,10 +1301,8 @@ JVM_END
 JVM_ENTRY(jobjectArray, jmm_DumpThreads(JNIEnv *env, jlongArray thread_ids, jboolean locked_monitors, jboolean locked_synchronizers))
   ResourceMark rm(THREAD);
 
-  if (JDK_Version::is_gte_jdk16x_version()) {
-    // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
-    java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL);
-  }
+  // make sure the AbstractOwnableSynchronizer klass is loaded before taking thread snapshots
+  java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(CHECK_NULL);
 
   typeArrayOop ta = typeArrayOop(JNIHandles::resolve(thread_ids));
   int num_threads = (ta != NULL ? ta->length() : 0);

hotspot/src/share/vm/services/threadService.cpp

@@ -665,17 +665,15 @@ void ConcurrentLocksDump::dump_at_safepoint() {
   // dump all locked concurrent locks
   assert(SafepointSynchronize::is_at_safepoint(), "all threads are stopped");
 
-  if (JDK_Version::is_gte_jdk16x_version()) {
-    ResourceMark rm;
+  ResourceMark rm;
 
-    GrowableArray<oop>* aos_objects = new GrowableArray<oop>(INITIAL_ARRAY_SIZE);
+  GrowableArray<oop>* aos_objects = new GrowableArray<oop>(INITIAL_ARRAY_SIZE);
 
-    // Find all instances of AbstractOwnableSynchronizer
-    HeapInspection::find_instances_at_safepoint(SystemDictionary::abstract_ownable_synchronizer_klass(),
+  // Find all instances of AbstractOwnableSynchronizer
+  HeapInspection::find_instances_at_safepoint(SystemDictionary::abstract_ownable_synchronizer_klass(),
                                                 aos_objects);
-    // Build a map of thread to its owned AQS locks
-    build_map(aos_objects);
-  }
+  // Build a map of thread to its owned AQS locks
+  build_map(aos_objects);
 }