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Java example source code file (interpreterRuntime.hpp)

This example Java source code file (interpreterRuntime.hpp) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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Java - Java tags/keywords

allstatic, assert, basicobjectlock, basictype, bytecodeclosure, bytecodes::code, bytecodes\:\:_breakpoint, constantpoolcacheentry, growablearray, javathread, method, share_vm_interpreter_interpreterruntime_hpp, signaturehandlerlibrary, target_arch_sparc

The interpreterRuntime.hpp Java example source code

/*
 * Copyright (c) 1997, 2013, 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
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#ifndef SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP
#define SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP

#include "interpreter/bytecode.hpp"
#include "interpreter/linkResolver.hpp"
#include "memory/universe.hpp"
#include "oops/method.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/signature.hpp"
#include "runtime/thread.inline.hpp"
#include "utilities/top.hpp"

// The InterpreterRuntime is called by the interpreter for everything
// that cannot/should not be dealt with in assembly and needs C support.

class InterpreterRuntime: AllStatic {
  friend class BytecodeClosure; // for method and bcp
  friend class PrintingClosure; // for method and bcp

 private:
  // Helper functions to access current interpreter state
  static frame     last_frame(JavaThread *thread)    { return thread->last_frame(); }
  static Method*   method(JavaThread *thread)        { return last_frame(thread).interpreter_frame_method(); }
  static address   bcp(JavaThread *thread)           { return last_frame(thread).interpreter_frame_bcp(); }
  static int       bci(JavaThread *thread)           { return last_frame(thread).interpreter_frame_bci(); }
  static void      set_bcp_and_mdp(address bcp, JavaThread*thread);
  static Bytecodes::Code code(JavaThread *thread)    {
    // pass method to avoid calling unsafe bcp_to_method (partial fix 4926272)
    return Bytecodes::code_at(method(thread), bcp(thread));
  }
  static bool      already_resolved(JavaThread *thread) { return cache_entry(thread)->is_resolved(code(thread)); }
  static Bytecode  bytecode(JavaThread *thread)      { return Bytecode(method(thread), bcp(thread)); }
  static int       get_index_u1(JavaThread *thread, Bytecodes::Code bc)
                                                        { return bytecode(thread).get_index_u1(bc); }
  static int       get_index_u2(JavaThread *thread, Bytecodes::Code bc)
                                                        { return bytecode(thread).get_index_u2(bc); }
  static int       get_index_u2_cpcache(JavaThread *thread, Bytecodes::Code bc)
                                                        { return bytecode(thread).get_index_u2_cpcache(bc); }
  static int       get_index_u4(JavaThread *thread, Bytecodes::Code bc)
                                                        { return bytecode(thread).get_index_u4(bc); }
  static int       number_of_dimensions(JavaThread *thread)  { return bcp(thread)[3]; }

  static ConstantPoolCacheEntry* cache_entry_at(JavaThread *thread, int i)  { return method(thread)->constants()->cache()->entry_at(i); }
  static ConstantPoolCacheEntry* cache_entry(JavaThread *thread)            { return cache_entry_at(thread, Bytes::get_native_u2(bcp(thread) + 1)); }
  static void      note_trap(JavaThread *thread, int reason, TRAPS);

  // Inner work method for Interpreter's frequency counter overflow
  static nmethod* frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp);

 public:
  // Constants
  static void    ldc           (JavaThread* thread, bool wide);
  static void    resolve_ldc   (JavaThread* thread, Bytecodes::Code bytecode);

  // Allocation
  static void    _new          (JavaThread* thread, ConstantPool* pool, int index);
  static void    newarray      (JavaThread* thread, BasicType type, jint size);
  static void    anewarray     (JavaThread* thread, ConstantPool* pool, int index, jint size);
  static void    multianewarray(JavaThread* thread, jint* first_size_address);
  static void    register_finalizer(JavaThread* thread, oopDesc* obj);

  // Quicken instance-of and check-cast bytecodes
  static void    quicken_io_cc(JavaThread* thread);

  // Exceptions thrown by the interpreter
  static void    throw_AbstractMethodError(JavaThread* thread);
  static void    throw_IncompatibleClassChangeError(JavaThread* thread);
  static void    throw_StackOverflowError(JavaThread* thread);
  static void    throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index);
  static void    throw_ClassCastException(JavaThread* thread, oopDesc* obj);
  static void    create_exception(JavaThread* thread, char* name, char* message);
  static void    create_klass_exception(JavaThread* thread, char* name, oopDesc* obj);
  static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception);
#if INCLUDE_JVMTI
  static void    member_name_arg_or_null(JavaThread* thread, address dmh, Method* m, address bcp);
#endif
  static void    throw_pending_exception(JavaThread* thread);

  // Statics & fields
  static void    resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode);

  // Synchronization
  static void    monitorenter(JavaThread* thread, BasicObjectLock* elem);
  static void    monitorexit (JavaThread* thread, BasicObjectLock* elem);

  static void    throw_illegal_monitor_state_exception(JavaThread* thread);
  static void    new_illegal_monitor_state_exception(JavaThread* thread);

  // Calls
  static void    resolve_invoke       (JavaThread* thread, Bytecodes::Code bytecode);
  static void    resolve_invokehandle (JavaThread* thread);
  static void    resolve_invokedynamic(JavaThread* thread);

  // Breakpoints
  static void _breakpoint(JavaThread* thread, Method* method, address bcp);
  static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, Method* method, address bcp);
  static void            set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code);
  static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(bcp(thread)) == Bytecodes::_breakpoint; }

  // Safepoints
  static void    at_safepoint(JavaThread* thread);

  // Debugger support
  static void post_field_access(JavaThread *thread, oopDesc* obj,
    ConstantPoolCacheEntry *cp_entry);
  static void post_field_modification(JavaThread *thread, oopDesc* obj,
    ConstantPoolCacheEntry *cp_entry, jvalue *value);
  static void post_method_entry(JavaThread *thread);
  static void post_method_exit (JavaThread *thread);
  static int  interpreter_contains(address pc);

  // Native signature handlers
  static void prepare_native_call(JavaThread* thread, Method* method);
  static address slow_signature_handler(JavaThread* thread,
                                        Method* method,
                                        intptr_t* from, intptr_t* to);

#if defined(IA32) || defined(AMD64) || defined(ARM)
  // Popframe support (only needed on x86, AMD64 and ARM)
  static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address);
#endif

  // Platform dependent stuff
#ifdef TARGET_ARCH_x86
# include "interpreterRT_x86.hpp"
#endif
#ifdef TARGET_ARCH_sparc
# include "interpreterRT_sparc.hpp"
#endif
#ifdef TARGET_ARCH_zero
# include "interpreterRT_zero.hpp"
#endif
#ifdef TARGET_ARCH_arm
# include "interpreterRT_arm.hpp"
#endif
#ifdef TARGET_ARCH_ppc
# include "interpreterRT_ppc.hpp"
#endif


  // Interpreter's frequency counter overflow
  static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp);

  // Interpreter profiling support
  static jint    bcp_to_di(Method* method, address cur_bcp);
  static void    profile_method(JavaThread* thread);
  static void    update_mdp_for_ret(JavaThread* thread, int bci);
#ifdef ASSERT
  static void    verify_mdp(Method* method, address bcp, address mdp);
#endif // ASSERT
  static MethodCounters* build_method_counters(JavaThread* thread, Method* m);
};


class SignatureHandlerLibrary: public AllStatic {
 public:
  enum { buffer_size =  1*K }; // the size of the temporary code buffer
  enum { blob_size   = 32*K }; // the size of a handler code blob.

 private:
  static BufferBlob*              _handler_blob; // the current buffer blob containing the generated handlers
  static address                  _handler;      // next available address within _handler_blob;
  static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
  static GrowableArray<address>*  _handlers;     // the corresponding handlers
  static address                  _buffer;       // the temporary code buffer

  static address set_handler_blob();
  static void initialize();
  static address set_handler(CodeBuffer* buffer);
  static void pd_set_handler(address handler);

 public:
  static void add(methodHandle method);
};

#endif // SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP

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