src/hotspot/share/runtime/deoptimization.hpp
author erikj
Tue, 12 Sep 2017 19:03:39 +0200
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parent 46998 hotspot/src/share/vm/runtime/deoptimization.hpp@efb404beeefb
child 47799 1772ebf07d1f
permissions -rw-r--r--
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/*
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 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef SHARE_VM_RUNTIME_DEOPTIMIZATION_HPP
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#define SHARE_VM_RUNTIME_DEOPTIMIZATION_HPP
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#include "memory/allocation.hpp"
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#include "runtime/frame.inline.hpp"
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class ProfileData;
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class vframeArray;
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class MonitorValue;
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class ObjectValue;
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class Deoptimization : AllStatic {
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  friend class VMStructs;
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  // What condition caused the deoptimization?
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  enum DeoptReason {
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    Reason_many = -1,             // indicates presence of several reasons
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    Reason_none = 0,              // indicates absence of a relevant deopt.
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    // Next 7 reasons are recorded per bytecode in DataLayout::trap_bits.
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    // This is more complicated for JVMCI as JVMCI may deoptimize to *some* bytecode before the
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    // bytecode that actually caused the deopt (with inlining, JVMCI may even deoptimize to a
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    // bytecode in another method):
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    //  - bytecode y in method b() causes deopt
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    //  - JVMCI deoptimizes to bytecode x in method a()
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    // -> the deopt reason will be recorded for method a() at bytecode x
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    Reason_null_check,            // saw unexpected null or zero divisor (@bci)
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    Reason_null_assert,           // saw unexpected non-null or non-zero (@bci)
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    Reason_range_check,           // saw unexpected array index (@bci)
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    Reason_class_check,           // saw unexpected object class (@bci)
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    Reason_array_check,           // saw unexpected array class (aastore @bci)
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    Reason_intrinsic,             // saw unexpected operand to intrinsic (@bci)
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    Reason_bimorphic,             // saw unexpected object class in bimorphic inlining (@bci)
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#if INCLUDE_JVMCI
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    Reason_unreached0             = Reason_null_assert,
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    Reason_type_checked_inlining  = Reason_intrinsic,
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    Reason_optimized_type_check   = Reason_bimorphic,
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#endif
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    // recorded per method
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    Reason_unloaded,              // unloaded class or constant pool entry
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    Reason_uninitialized,         // bad class state (uninitialized)
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    Reason_unreached,             // code is not reached, compiler
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    Reason_unhandled,             // arbitrary compiler limitation
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    Reason_constraint,            // arbitrary runtime constraint violated
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    Reason_div0_check,            // a null_check due to division by zero
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    Reason_age,                   // nmethod too old; tier threshold reached
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    Reason_predicate,             // compiler generated predicate failed
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    Reason_loop_limit_check,      // compiler generated loop limits check failed
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    Reason_speculate_class_check, // saw unexpected object class from type speculation
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    Reason_speculate_null_check,  // saw unexpected null from type speculation
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    Reason_speculate_null_assert, // saw unexpected null from type speculation
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    Reason_rtm_state_change,      // rtm state change detected
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    Reason_unstable_if,           // a branch predicted always false was taken
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    Reason_unstable_fused_if,     // fused two ifs that had each one untaken branch. One is now taken.
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#if INCLUDE_JVMCI
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    Reason_aliasing,              // optimistic assumption about aliasing failed
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    Reason_transfer_to_interpreter, // explicit transferToInterpreter()
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    Reason_not_compiled_exception_handler,
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    Reason_unresolved,
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    Reason_jsr_mismatch,
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#endif
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    // Reason_tenured is counted separately, add normal counted Reasons above.
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    // Related to MethodData::_trap_hist_limit where Reason_tenured isn't included
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    Reason_tenured,               // age of the code has reached the limit
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    Reason_LIMIT,
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    // Note:  Keep this enum in sync. with _trap_reason_name.
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    Reason_RECORDED_LIMIT = Reason_bimorphic  // some are not recorded per bc
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    // Note:  Reason_RECORDED_LIMIT should be < 8 to fit into 3 bits of
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    // DataLayout::trap_bits.  This dependency is enforced indirectly
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    // via asserts, to avoid excessive direct header-to-header dependencies.
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    // See Deoptimization::trap_state_reason and class DataLayout.
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  };
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  // What action must be taken by the runtime?
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  enum DeoptAction {
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    Action_none,                  // just interpret, do not invalidate nmethod
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    Action_maybe_recompile,       // recompile the nmethod; need not invalidate
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    Action_reinterpret,           // invalidate the nmethod, reset IC, maybe recompile
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    Action_make_not_entrant,      // invalidate the nmethod, recompile (probably)
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    Action_make_not_compilable,   // invalidate the nmethod and do not compile
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    Action_LIMIT
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    // Note:  Keep this enum in sync. with _trap_action_name.
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  };
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  enum {
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    _action_bits = 3,
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    _reason_bits = 5,
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    _debug_id_bits = 23,
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    _action_shift = 0,
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    _reason_shift = _action_shift+_action_bits,
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    _debug_id_shift = _reason_shift+_reason_bits,
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    BC_CASE_LIMIT = PRODUCT_ONLY(1) NOT_PRODUCT(4) // for _deoptimization_hist
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  };
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  enum UnpackType {
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    Unpack_deopt                = 0, // normal deoptimization, use pc computed in unpack_vframe_on_stack
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    Unpack_exception            = 1, // exception is pending
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    Unpack_uncommon_trap        = 2, // redo last byte code (C2 only)
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    Unpack_reexecute            = 3, // reexecute bytecode (C1 only)
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    Unpack_LIMIT                = 4
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  };
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  // Checks all compiled methods. Invalid methods are deleted and
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  // corresponding activations are deoptimized.
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  static int deoptimize_dependents();
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  // Deoptimizes a frame lazily. nmethod gets patched deopt happens on return to the frame
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  static void deoptimize(JavaThread* thread, frame fr, RegisterMap *reg_map);
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  static void deoptimize(JavaThread* thread, frame fr, RegisterMap *reg_map, DeoptReason reason);
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#if INCLUDE_JVMCI
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  static address deoptimize_for_missing_exception_handler(CompiledMethod* cm);
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#endif
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  private:
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  // Does the actual work for deoptimizing a single frame
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  static void deoptimize_single_frame(JavaThread* thread, frame fr, DeoptReason reason);
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  // Helper function to revoke biases of all monitors in frame if UseBiasedLocking
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  // is enabled
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  static void revoke_biases_of_monitors(JavaThread* thread, frame fr, RegisterMap* map);
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  // Helper function to revoke biases of all monitors in frames
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  // executing in a particular CodeBlob if UseBiasedLocking is enabled
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  static void revoke_biases_of_monitors(CodeBlob* cb);
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#if defined(COMPILER2) || INCLUDE_JVMCI
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JVMCI_ONLY(public:)
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  // Support for restoring non-escaping objects
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  static bool realloc_objects(JavaThread* thread, frame* fr, GrowableArray<ScopeValue*>* objects, TRAPS);
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  static void reassign_type_array_elements(frame* fr, RegisterMap* reg_map, ObjectValue* sv, typeArrayOop obj, BasicType type);
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  static void reassign_object_array_elements(frame* fr, RegisterMap* reg_map, ObjectValue* sv, objArrayOop obj);
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  static void reassign_fields(frame* fr, RegisterMap* reg_map, GrowableArray<ScopeValue*>* objects, bool realloc_failures, bool skip_internal);
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  static void relock_objects(GrowableArray<MonitorInfo*>* monitors, JavaThread* thread, bool realloc_failures);
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  static void pop_frames_failed_reallocs(JavaThread* thread, vframeArray* array);
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  NOT_PRODUCT(static void print_objects(GrowableArray<ScopeValue*>* objects, bool realloc_failures);)
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#endif // COMPILER2 || INCLUDE_JVMCI
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  public:
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  static vframeArray* create_vframeArray(JavaThread* thread, frame fr, RegisterMap *reg_map, GrowableArray<compiledVFrame*>* chunk, bool realloc_failures);
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  // Interface used for unpacking deoptimized frames
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  // UnrollBlock is returned by fetch_unroll_info() to the deoptimization handler (blob).
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  // This is only a CheapObj to ease debugging after a deopt failure
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  class UnrollBlock : public CHeapObj<mtCompiler> {
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    friend class VMStructs;
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    friend class JVMCIVMStructs;
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   private:
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    int       _size_of_deoptimized_frame; // Size, in bytes, of current deoptimized frame
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    int       _caller_adjustment;         // Adjustment, in bytes, to caller's SP by initial interpreted frame
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    int       _number_of_frames;          // Number frames to unroll
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    int       _total_frame_sizes;         // Total of number*sizes frames
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    intptr_t* _frame_sizes;               // Array of frame sizes, in bytes, for unrolling the stack
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    address*  _frame_pcs;                 // Array of frame pc's, in bytes, for unrolling the stack
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    intptr_t* _register_block;            // Block for storing callee-saved registers.
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    BasicType _return_type;               // Tells if we have to restore double or long return value
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    intptr_t  _initial_info;              // Platform dependent data for the sender frame (was FP on x86)
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    int       _caller_actual_parameters;  // The number of actual arguments at the
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                                          // interpreted caller of the deoptimized frame
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    int       _unpack_kind;               // exec_mode that can be changed during fetch_unroll_info
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    // The following fields are used as temps during the unpacking phase
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    // (which is tight on registers, especially on x86). They really ought
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    // to be PD variables but that involves moving this class into its own
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    // file to use the pd include mechanism. Maybe in a later cleanup ...
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    intptr_t  _counter_temp;              // SHOULD BE PD VARIABLE (x86 frame count temp)
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    intptr_t  _sender_sp_temp;            // SHOULD BE PD VARIABLE (x86 sender_sp)
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   public:
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    // Constructor
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    UnrollBlock(int  size_of_deoptimized_frame,
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                int  caller_adjustment,
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                int  caller_actual_parameters,
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                int  number_of_frames,
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                intptr_t* frame_sizes,
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                address* frames_pcs,
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                BasicType return_type,
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                int unpack_kind);
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    ~UnrollBlock();
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    // Returns where a register is located.
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    intptr_t* value_addr_at(int register_number) const;
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    // Accessors
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    intptr_t* frame_sizes()  const { return _frame_sizes; }
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    int number_of_frames()  const { return _number_of_frames; }
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    address*  frame_pcs()   const { return _frame_pcs ; }
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    int  unpack_kind()   const { return _unpack_kind; }
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    // Returns the total size of frames
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    int size_of_frames() const;
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    void set_initial_info(intptr_t info) { _initial_info = info; }
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    int caller_actual_parameters() const { return _caller_actual_parameters; }
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    // Accessors used by the code generator for the unpack stub.
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    static int size_of_deoptimized_frame_offset_in_bytes() { return offset_of(UnrollBlock, _size_of_deoptimized_frame); }
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    static int caller_adjustment_offset_in_bytes()         { return offset_of(UnrollBlock, _caller_adjustment);         }
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    static int number_of_frames_offset_in_bytes()          { return offset_of(UnrollBlock, _number_of_frames);          }
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    static int frame_sizes_offset_in_bytes()               { return offset_of(UnrollBlock, _frame_sizes);               }
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    static int total_frame_sizes_offset_in_bytes()         { return offset_of(UnrollBlock, _total_frame_sizes);         }
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    static int frame_pcs_offset_in_bytes()                 { return offset_of(UnrollBlock, _frame_pcs);                 }
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    static int register_block_offset_in_bytes()            { return offset_of(UnrollBlock, _register_block);            }
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    static int return_type_offset_in_bytes()               { return offset_of(UnrollBlock, _return_type);               }
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    static int counter_temp_offset_in_bytes()              { return offset_of(UnrollBlock, _counter_temp);              }
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    static int initial_info_offset_in_bytes()              { return offset_of(UnrollBlock, _initial_info);              }
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    static int unpack_kind_offset_in_bytes()               { return offset_of(UnrollBlock, _unpack_kind);               }
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    static int sender_sp_temp_offset_in_bytes()            { return offset_of(UnrollBlock, _sender_sp_temp);            }
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    BasicType return_type() const { return _return_type; }
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    void print();
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  };
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  //** Returns an UnrollBlock continuing information
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  // how to make room for the resulting interpreter frames.
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  // Called by assembly stub after execution has returned to
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  // deoptimized frame.
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  // @argument thread.     Thread where stub_frame resides.
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  // @see OptoRuntime::deoptimization_fetch_unroll_info_C
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  static UnrollBlock* fetch_unroll_info(JavaThread* thread, int exec_mode);
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  //** Unpacks vframeArray onto execution stack
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  // Called by assembly stub after execution has returned to
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  // deoptimized frame and after the stack unrolling.
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  // @argument thread.     Thread where stub_frame resides.
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  // @argument exec_mode.  Determines how execution should be continued in top frame.
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  //                       0 means continue after current byte code
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  //                       1 means exception has happened, handle exception
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  //                       2 means reexecute current bytecode (for uncommon traps).
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  // @see OptoRuntime::deoptimization_unpack_frames_C
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  // Return BasicType of call return type, if any
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  static BasicType unpack_frames(JavaThread* thread, int exec_mode);
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  // Cleans up deoptimization bits on thread after unpacking or in the
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  // case of an exception.
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  static void cleanup_deopt_info(JavaThread  *thread,
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                                 vframeArray * array);
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  // Restores callee saved values from deoptimized frame into oldest interpreter frame
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  // so caller of the deoptimized frame will get back the values it expects.
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  static void unwind_callee_save_values(frame* f, vframeArray* vframe_array);
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  //** Performs an uncommon trap for compiled code.
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  // The top most compiler frame is converted into interpreter frames
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  static UnrollBlock* uncommon_trap(JavaThread* thread, jint unloaded_class_index, jint exec_mode);
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  // Helper routine that enters the VM and may block
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  static void uncommon_trap_inner(JavaThread* thread, jint unloaded_class_index);
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  //** Deoptimizes the frame identified by id.
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  // Only called from VMDeoptimizeFrame
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  // @argument thread.     Thread where stub_frame resides.
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  // @argument id.         id of frame that should be deoptimized.
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  static void deoptimize_frame_internal(JavaThread* thread, intptr_t* id, DeoptReason reason);
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  // if thread is not the current thread then execute
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  // VM_DeoptimizeFrame otherwise deoptimize directly.
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  static void deoptimize_frame(JavaThread* thread, intptr_t* id, DeoptReason reason);
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  static void deoptimize_frame(JavaThread* thread, intptr_t* id);
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  // Statistics
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  static void gather_statistics(DeoptReason reason, DeoptAction action,
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                                Bytecodes::Code bc = Bytecodes::_illegal);
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  static void print_statistics();
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  // How much room to adjust the last frame's SP by, to make space for
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  // the callee's interpreter frame (which expects locals to be next to
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  // incoming arguments)
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  static int last_frame_adjust(int callee_parameters, int callee_locals);
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  // trap_request codes
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  static DeoptReason trap_request_reason(int trap_request) {
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    if (trap_request < 0)
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      return (DeoptReason)
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        ((~(trap_request) >> _reason_shift) & right_n_bits(_reason_bits));
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    else
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      // standard reason for unloaded CP entry
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      return Reason_unloaded;
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  }
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  static DeoptAction trap_request_action(int trap_request) {
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    if (trap_request < 0)
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      return (DeoptAction)
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        ((~(trap_request) >> _action_shift) & right_n_bits(_action_bits));
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    else
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      // standard action for unloaded CP entry
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      return _unloaded_action;
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  }
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  static int trap_request_debug_id(int trap_request) {
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    if (trap_request < 0) {
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      return ((~(trap_request) >> _debug_id_shift) & right_n_bits(_debug_id_bits));
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    } else {
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      // standard action for unloaded CP entry
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      return 0;
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    }
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  }
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  static int trap_request_index(int trap_request) {
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    if (trap_request < 0)
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      return -1;
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    else
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      return trap_request;
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  }
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  static int make_trap_request(DeoptReason reason, DeoptAction action,
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                               int index = -1) {
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    assert((1 << _reason_bits) >= Reason_LIMIT, "enough bits");
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    assert((1 << _action_bits) >= Action_LIMIT, "enough bits");
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    int trap_request;
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    if (index != -1)
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      trap_request = index;
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    else
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      trap_request = (~(((reason) << _reason_shift)
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                        + ((action) << _action_shift)));
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    assert(reason == trap_request_reason(trap_request), "valid reason");
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    assert(action == trap_request_action(trap_request), "valid action");
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    assert(index  == trap_request_index(trap_request),  "valid index");
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    return trap_request;
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  }
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   345
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  // The trap_state stored in a MDO is decoded here.
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  // It records two items of information.
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  //  reason:  If a deoptimization happened here, what its reason was,
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  //           or if there were multiple deopts with differing reasons.
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  //  recompiled: If a deoptimization here triggered a recompilation.
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  // Note that not all reasons are recorded per-bci.
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  static DeoptReason trap_state_reason(int trap_state);
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  static int  trap_state_has_reason(int trap_state, int reason);
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  static int  trap_state_add_reason(int trap_state, int reason);
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   355
  static bool trap_state_is_recompiled(int trap_state);
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  static int  trap_state_set_recompiled(int trap_state, bool z);
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  static const char* format_trap_state(char* buf, size_t buflen,
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   358
                                       int trap_state);
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   359
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  static bool reason_is_recorded_per_bytecode(DeoptReason reason) {
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    return reason > Reason_none && reason <= Reason_RECORDED_LIMIT;
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  }
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   363
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   364
  static DeoptReason reason_recorded_per_bytecode_if_any(DeoptReason reason) {
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   365
    if (reason_is_recorded_per_bytecode(reason))
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   366
      return reason;
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   367
    else if (reason == Reason_div0_check) // null check due to divide-by-zero?
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      return Reason_null_check;           // recorded per BCI as a null check
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    else if (reason == Reason_speculate_class_check)
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      return Reason_class_check;
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   371
    else if (reason == Reason_speculate_null_check)
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   372
      return Reason_null_check;
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   373
    else if (reason == Reason_speculate_null_assert)
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   374
      return Reason_null_assert;
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   375
    else if (reason == Reason_unstable_if)
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   376
      return Reason_intrinsic;
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   377
    else if (reason == Reason_unstable_fused_if)
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      return Reason_range_check;
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   379
    else
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   380
      return Reason_none;
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   381
  }
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   382
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   383
  static bool reason_is_speculate(int reason) {
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   384
    if (reason == Reason_speculate_class_check ||
73dd19b96b5d 8181211: C2: Use profiling data to optimize on/off heap unsafe accesses
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   385
        reason == Reason_speculate_null_check ||
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   386
        reason == Reason_speculate_null_assert) {
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   387
      return true;
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   388
    }
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   389
    return false;
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   390
  }
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   391
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   392
  static DeoptReason reason_null_check(bool speculative) {
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   393
    return speculative ? Deoptimization::Reason_speculate_null_check : Deoptimization::Reason_null_check;
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   394
  }
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   395
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   396
  static DeoptReason reason_class_check(bool speculative) {
e3eb08ead679 8031755: Type speculation should be used to optimize explicit null checks
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   397
    return speculative ? Deoptimization::Reason_speculate_class_check : Deoptimization::Reason_class_check;
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diff changeset
   398
  }
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diff changeset
   399
46542
73dd19b96b5d 8181211: C2: Use profiling data to optimize on/off heap unsafe accesses
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   400
  static DeoptReason reason_null_assert(bool speculative) {
73dd19b96b5d 8181211: C2: Use profiling data to optimize on/off heap unsafe accesses
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   401
    return speculative ? Deoptimization::Reason_speculate_null_assert : Deoptimization::Reason_null_assert;
73dd19b96b5d 8181211: C2: Use profiling data to optimize on/off heap unsafe accesses
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diff changeset
   402
  }
73dd19b96b5d 8181211: C2: Use profiling data to optimize on/off heap unsafe accesses
roland
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diff changeset
   403
22916
582da2ed4dfa 8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff changeset
   404
  static uint per_method_trap_limit(int reason) {
582da2ed4dfa 8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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   405
    return reason_is_speculate(reason) ? (uint)PerMethodSpecTrapLimit : (uint)PerMethodTrapLimit;
582da2ed4dfa 8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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   406
  }
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   407
1
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   408
  static const char* trap_reason_name(int reason);
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   409
  static const char* trap_action_name(int action);
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   410
  // Format like reason='foo' action='bar' index='123'.
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   411
  // This is suitable both for XML and for tty output.
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   412
  static const char* format_trap_request(char* buf, size_t buflen,
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   413
                                         int trap_request);
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   414
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   415
  static jint total_deoptimization_count();
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   416
  static jint deoptimization_count(DeoptReason reason);
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   417
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   418
  // JVMTI PopFrame support
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   419
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   420
  // Preserves incoming arguments to the popped frame when it is
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   421
  // returning to a deoptimized caller
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   422
  static void popframe_preserve_args(JavaThread* thread, int bytes_to_save, void* start_address);
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   423
46727
6e4a84748e2c 8183039: Re-examine methodHandle methods uninlined by 8144256
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   424
  static MethodData* get_method_data(JavaThread* thread, const methodHandle& m, bool create_if_missing);
1
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   425
 private:
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   426
  // Update the mdo's count and per-BCI reason bits, returning previous state:
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882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff changeset
   427
  static ProfileData* query_update_method_data(MethodData* trap_mdo,
1
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diff changeset
   428
                                               int trap_bci,
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   429
                                               DeoptReason reason,
33160
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
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diff changeset
   430
                                               bool update_total_trap_count,
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
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diff changeset
   431
#if INCLUDE_JVMCI
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
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   432
                                               bool is_osr,
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
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diff changeset
   433
#endif
22916
582da2ed4dfa 8031752: Failed speculative optimizations should be reattempted when root of compilation is different
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diff changeset
   434
                                               Method* compiled_method,
1
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diff changeset
   435
                                               //outputs:
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   436
                                               uint& ret_this_trap_count,
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diff changeset
   437
                                               bool& ret_maybe_prior_trap,
489c9b5090e2 Initial load
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diff changeset
   438
                                               bool& ret_maybe_prior_recompile);
489c9b5090e2 Initial load
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parents:
diff changeset
   439
  // class loading support for uncommon trap
33593
60764a78fa5c 8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents: 33160
diff changeset
   440
  static void load_class_by_index(const constantPoolHandle& constant_pool, int index, TRAPS);
60764a78fa5c 8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents: 33160
diff changeset
   441
  static void load_class_by_index(const constantPoolHandle& constant_pool, int index);
1
489c9b5090e2 Initial load
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parents:
diff changeset
   442
34173
01bb07d23a5b 8141133: [JVMCI] crash during safepoint deopt if rethrow_exception is set
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parents: 33160
diff changeset
   443
  static UnrollBlock* fetch_unroll_info_helper(JavaThread* thread, int exec_mode);
1
489c9b5090e2 Initial load
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parents:
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   444
489c9b5090e2 Initial load
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   445
  static DeoptAction _unloaded_action; // == Action_reinterpret;
24477
d2442b4a080f 8043180: SIGSEGV in Events::log_deopt_message
iveresov
parents: 24442
diff changeset
   446
  static const char* _trap_reason_name[];
d2442b4a080f 8043180: SIGSEGV in Events::log_deopt_message
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diff changeset
   447
  static const char* _trap_action_name[];
1
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   448
489c9b5090e2 Initial load
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   449
  static juint _deoptimization_hist[Reason_LIMIT][1+Action_LIMIT][BC_CASE_LIMIT];
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diff changeset
   450
  // Note:  Histogram array size is 1-2 Kb.
489c9b5090e2 Initial load
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   451
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   452
 public:
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882756847a04 6964458: Reimplement class meta-data storage to use native memory
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   453
  static void update_method_data_from_interpreter(MethodData* trap_mdo, int trap_bci, int reason);
1
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   454
};
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   455
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   456
class DeoptimizationMarker : StackObj {  // for profiling
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   457
  static bool _is_active;
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   458
public:
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   459
  DeoptimizationMarker()  { _is_active = true; }
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   460
  ~DeoptimizationMarker() { _is_active = false; }
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   461
  static bool is_active() { return _is_active; }
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   462
};
7397
5b173b4ca846 6989984: Use standard include model for Hospot
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   463
5b173b4ca846 6989984: Use standard include model for Hospot
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   464
#endif // SHARE_VM_RUNTIME_DEOPTIMIZATION_HPP