author | kvn |
Fri, 29 Jan 2010 09:27:22 -0800 | |
changeset 4750 | 71fd601907dc |
parent 4749 | f26b30116e3a |
child 4752 | 67a506670cd0 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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// This class is used internally by nmethods, to cache |
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// exception/pc/handler information. |
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class ExceptionCache : public CHeapObj { |
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friend class VMStructs; |
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private: |
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static address _unwind_handler; |
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enum { cache_size = 16 }; |
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klassOop _exception_type; |
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address _pc[cache_size]; |
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address _handler[cache_size]; |
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int _count; |
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ExceptionCache* _next; |
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address pc_at(int index) { assert(index >= 0 && index < count(),""); return _pc[index]; } |
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void set_pc_at(int index, address a) { assert(index >= 0 && index < cache_size,""); _pc[index] = a; } |
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address handler_at(int index) { assert(index >= 0 && index < count(),""); return _handler[index]; } |
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void set_handler_at(int index, address a) { assert(index >= 0 && index < cache_size,""); _handler[index] = a; } |
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int count() { return _count; } |
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void increment_count() { _count++; } |
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public: |
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ExceptionCache(Handle exception, address pc, address handler); |
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klassOop exception_type() { return _exception_type; } |
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klassOop* exception_type_addr() { return &_exception_type; } |
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ExceptionCache* next() { return _next; } |
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void set_next(ExceptionCache *ec) { _next = ec; } |
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address match(Handle exception, address pc); |
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bool match_exception_with_space(Handle exception) ; |
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address test_address(address addr); |
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bool add_address_and_handler(address addr, address handler) ; |
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static address unwind_handler() { return _unwind_handler; } |
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}; |
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// cache pc descs found in earlier inquiries |
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class PcDescCache VALUE_OBJ_CLASS_SPEC { |
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friend class VMStructs; |
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private: |
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enum { cache_size = 4 }; |
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PcDesc* _last_pc_desc; // most recent pc_desc found |
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PcDesc* _pc_descs[cache_size]; // last cache_size pc_descs found |
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public: |
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PcDescCache() { debug_only(_last_pc_desc = NULL); } |
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void reset_to(PcDesc* initial_pc_desc); |
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PcDesc* find_pc_desc(int pc_offset, bool approximate); |
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void add_pc_desc(PcDesc* pc_desc); |
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PcDesc* last_pc_desc() { return _last_pc_desc; } |
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}; |
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// nmethods (native methods) are the compiled code versions of Java methods. |
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struct nmFlags { |
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friend class VMStructs; |
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unsigned int version:8; // version number (0 = first version) |
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unsigned int level:4; // optimization level |
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unsigned int age:4; // age (in # of sweep steps) |
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unsigned int state:2; // {alive, zombie, unloaded) |
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unsigned int isUncommonRecompiled:1; // recompiled because of uncommon trap? |
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unsigned int isToBeRecompiled:1; // to be recompiled as soon as it matures |
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unsigned int hasFlushedDependencies:1; // Used for maintenance of dependencies |
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unsigned int markedForReclamation:1; // Used by NMethodSweeper |
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unsigned int has_unsafe_access:1; // May fault due to unsafe access. |
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unsigned int has_method_handle_invokes:1; // Has this method MethodHandle invokes? |
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unsigned int speculatively_disconnected:1; // Marked for potential unload |
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void clear(); |
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}; |
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// A nmethod contains: |
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// - header (the nmethod structure) |
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// [Relocation] |
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// - relocation information |
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// - constant part (doubles, longs and floats used in nmethod) |
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// [Code] |
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// - code body |
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// - exception handler |
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// - stub code |
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// [Debugging information] |
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// - oop array |
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// - data array |
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// - pcs |
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// [Exception handler table] |
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// - handler entry point array |
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// [Implicit Null Pointer exception table] |
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// - implicit null table array |
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class Dependencies; |
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class ExceptionHandlerTable; |
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class ImplicitExceptionTable; |
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class AbstractCompiler; |
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class xmlStream; |
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class nmethod : public CodeBlob { |
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friend class VMStructs; |
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friend class NMethodSweeper; |
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friend class CodeCache; // non-perm oops |
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private: |
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// Shared fields for all nmethod's |
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static int _zombie_instruction_size; |
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methodOop _method; |
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int _entry_bci; // != InvocationEntryBci if this nmethod is an on-stack replacement method |
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// To support simple linked-list chaining of nmethods: |
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nmethod* _osr_link; // from instanceKlass::osr_nmethods_head |
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nmethod* _scavenge_root_link; // from CodeCache::scavenge_root_nmethods |
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nmethod* _saved_nmethod_link; // from CodeCache::speculatively_disconnect |
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static nmethod* volatile _oops_do_mark_nmethods; |
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nmethod* volatile _oops_do_mark_link; |
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AbstractCompiler* _compiler; // The compiler which compiled this nmethod |
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// Offsets for different nmethod parts |
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int _exception_offset; |
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// All deoptee's will resume execution at this location described by this offset |
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int _deoptimize_offset; |
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#ifdef HAVE_DTRACE_H |
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int _trap_offset; |
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#endif // def HAVE_DTRACE_H |
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int _stub_offset; |
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int _consts_offset; |
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int _scopes_data_offset; |
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int _scopes_pcs_offset; |
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int _dependencies_offset; |
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int _handler_table_offset; |
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int _nul_chk_table_offset; |
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int _nmethod_end_offset; |
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// location in frame (offset for sp) that deopt can store the original |
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// pc during a deopt. |
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int _orig_pc_offset; |
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int _compile_id; // which compilation made this nmethod |
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int _comp_level; // compilation level |
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// offsets for entry points |
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address _entry_point; // entry point with class check |
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address _verified_entry_point; // entry point without class check |
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address _osr_entry_point; // entry point for on stack replacement |
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nmFlags flags; // various flags to keep track of nmethod state |
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bool _markedForDeoptimization; // Used for stack deoptimization |
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enum { alive = 0, |
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not_entrant = 1, // uncommon trap has happened but activations may still exist |
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zombie = 2, |
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unloaded = 3 }; |
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// used by jvmti to track if an unload event has been posted for this nmethod. |
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bool _unload_reported; |
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jbyte _scavenge_root_state; |
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NOT_PRODUCT(bool _has_debug_info; ) |
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// Nmethod Flushing lock (if non-zero, then the nmethod is not removed) |
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jint _lock_count; |
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// not_entrant method removal. Each mark_sweep pass will update |
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// this mark to current sweep invocation count if it is seen on the |
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// stack. An not_entrant method can be removed when there is no |
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// more activations, i.e., when the _stack_traversal_mark is less than |
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// current sweep traversal index. |
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long _stack_traversal_mark; |
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ExceptionCache *_exception_cache; |
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PcDescCache _pc_desc_cache; |
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// These are only used for compiled synchronized native methods to |
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// locate the owner and stack slot for the BasicLock so that we can |
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// properly revoke the bias of the owner if necessary. They are |
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// needed because there is no debug information for compiled native |
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// wrappers and the oop maps are insufficient to allow |
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// frame::retrieve_receiver() to work. Currently they are expected |
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// to be byte offsets from the Java stack pointer for maximum code |
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// sharing between platforms. Note that currently biased locking |
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// will never cause Class instances to be biased but this code |
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// handles the static synchronized case as well. |
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ByteSize _compiled_synchronized_native_basic_lock_owner_sp_offset; |
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ByteSize _compiled_synchronized_native_basic_lock_sp_offset; |
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friend class nmethodLocker; |
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// For native wrappers |
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nmethod(methodOop method, |
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int nmethod_size, |
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CodeOffsets* offsets, |
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CodeBuffer *code_buffer, |
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int frame_size, |
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ByteSize basic_lock_owner_sp_offset, /* synchronized natives only */ |
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ByteSize basic_lock_sp_offset, /* synchronized natives only */ |
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OopMapSet* oop_maps); |
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#ifdef HAVE_DTRACE_H |
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// For native wrappers |
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nmethod(methodOop method, |
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int nmethod_size, |
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CodeOffsets* offsets, |
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CodeBuffer *code_buffer, |
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int frame_size); |
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#endif // def HAVE_DTRACE_H |
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// Creation support |
239 |
nmethod(methodOop method, |
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int nmethod_size, |
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int compile_id, |
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int entry_bci, |
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CodeOffsets* offsets, |
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int orig_pc_offset, |
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DebugInformationRecorder *recorder, |
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Dependencies* dependencies, |
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CodeBuffer *code_buffer, |
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int frame_size, |
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OopMapSet* oop_maps, |
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ExceptionHandlerTable* handler_table, |
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ImplicitExceptionTable* nul_chk_table, |
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AbstractCompiler* compiler, |
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int comp_level); |
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// helper methods |
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void* operator new(size_t size, int nmethod_size); |
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const char* reloc_string_for(u_char* begin, u_char* end); |
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// Returns true if this thread changed the state of the nmethod or |
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// false if another thread performed the transition. |
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bool make_not_entrant_or_zombie(unsigned int state); |
1 | 262 |
void inc_decompile_count(); |
263 |
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// used to check that writes to nmFlags are done consistently. |
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static void check_safepoint() PRODUCT_RETURN; |
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266 |
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// Used to manipulate the exception cache |
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void add_exception_cache_entry(ExceptionCache* new_entry); |
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ExceptionCache* exception_cache_entry_for_exception(Handle exception); |
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270 |
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// Inform external interfaces that a compiled method has been unloaded |
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272 |
inline void post_compiled_method_unload(); |
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public: |
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// create nmethod with entry_bci |
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static nmethod* new_nmethod(methodHandle method, |
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int compile_id, |
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int entry_bci, |
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CodeOffsets* offsets, |
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int orig_pc_offset, |
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DebugInformationRecorder* recorder, |
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Dependencies* dependencies, |
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CodeBuffer *code_buffer, |
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int frame_size, |
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285 |
OopMapSet* oop_maps, |
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ExceptionHandlerTable* handler_table, |
|
287 |
ImplicitExceptionTable* nul_chk_table, |
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AbstractCompiler* compiler, |
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int comp_level); |
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291 |
static nmethod* new_native_nmethod(methodHandle method, |
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CodeBuffer *code_buffer, |
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int vep_offset, |
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int frame_complete, |
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295 |
int frame_size, |
|
296 |
ByteSize receiver_sp_offset, |
|
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ByteSize basic_lock_sp_offset, |
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OopMapSet* oop_maps); |
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#ifdef HAVE_DTRACE_H |
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// The method we generate for a dtrace probe has to look |
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// like an nmethod as far as the rest of the system is concerned |
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// which is somewhat unfortunate. |
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static nmethod* new_dtrace_nmethod(methodHandle method, |
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CodeBuffer *code_buffer, |
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int vep_offset, |
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int trap_offset, |
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int frame_complete, |
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int frame_size); |
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int trap_offset() const { return _trap_offset; } |
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address trap_address() const { return code_begin() + _trap_offset; } |
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314 |
#endif // def HAVE_DTRACE_H |
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315 |
|
1 | 316 |
// accessors |
317 |
methodOop method() const { return _method; } |
|
318 |
AbstractCompiler* compiler() const { return _compiler; } |
|
319 |
||
320 |
#ifndef PRODUCT |
|
321 |
bool has_debug_info() const { return _has_debug_info; } |
|
322 |
void set_has_debug_info(bool f) { _has_debug_info = false; } |
|
323 |
#endif // NOT PRODUCT |
|
324 |
||
325 |
// type info |
|
326 |
bool is_nmethod() const { return true; } |
|
327 |
bool is_java_method() const { return !method()->is_native(); } |
|
328 |
bool is_native_method() const { return method()->is_native(); } |
|
329 |
bool is_osr_method() const { return _entry_bci != InvocationEntryBci; } |
|
330 |
||
331 |
bool is_compiled_by_c1() const; |
|
332 |
bool is_compiled_by_c2() const; |
|
333 |
||
334 |
// boundaries for different parts |
|
4749 | 335 |
address code_begin () const { return _entry_point; } |
336 |
address code_end () const { return header_begin() + _stub_offset ; } |
|
337 |
address exception_begin () const { return header_begin() + _exception_offset ; } |
|
338 |
address deopt_handler_begin() const { return header_begin() + _deoptimize_offset ; } |
|
339 |
address stub_begin () const { return header_begin() + _stub_offset ; } |
|
340 |
address stub_end () const { return header_begin() + _consts_offset ; } |
|
341 |
address consts_begin () const { return header_begin() + _consts_offset ; } |
|
342 |
address consts_end () const { return header_begin() + _scopes_data_offset ; } |
|
343 |
address scopes_data_begin () const { return header_begin() + _scopes_data_offset ; } |
|
344 |
address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; } |
|
345 |
PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); } |
|
346 |
PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset); } |
|
347 |
address dependencies_begin () const { return header_begin() + _dependencies_offset ; } |
|
348 |
address dependencies_end () const { return header_begin() + _handler_table_offset ; } |
|
349 |
address handler_table_begin() const { return header_begin() + _handler_table_offset ; } |
|
350 |
address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; } |
|
351 |
address nul_chk_table_begin() const { return header_begin() + _nul_chk_table_offset ; } |
|
352 |
address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; } |
|
1 | 353 |
|
354 |
int code_size () const { return code_end () - code_begin (); } |
|
355 |
int stub_size () const { return stub_end () - stub_begin (); } |
|
356 |
int consts_size () const { return consts_end () - consts_begin (); } |
|
357 |
int scopes_data_size () const { return scopes_data_end () - scopes_data_begin (); } |
|
358 |
int scopes_pcs_size () const { return (intptr_t)scopes_pcs_end () - (intptr_t)scopes_pcs_begin (); } |
|
359 |
int dependencies_size () const { return dependencies_end () - dependencies_begin (); } |
|
360 |
int handler_table_size() const { return handler_table_end() - handler_table_begin(); } |
|
361 |
int nul_chk_table_size() const { return nul_chk_table_end() - nul_chk_table_begin(); } |
|
362 |
||
363 |
int total_size () const; |
|
364 |
||
365 |
bool code_contains (address addr) const { return code_begin () <= addr && addr < code_end (); } |
|
366 |
bool stub_contains (address addr) const { return stub_begin () <= addr && addr < stub_end (); } |
|
367 |
bool consts_contains (address addr) const { return consts_begin () <= addr && addr < consts_end (); } |
|
368 |
bool scopes_data_contains (address addr) const { return scopes_data_begin () <= addr && addr < scopes_data_end (); } |
|
369 |
bool scopes_pcs_contains (PcDesc* addr) const { return scopes_pcs_begin () <= addr && addr < scopes_pcs_end (); } |
|
370 |
bool handler_table_contains(address addr) const { return handler_table_begin() <= addr && addr < handler_table_end(); } |
|
371 |
bool nul_chk_table_contains(address addr) const { return nul_chk_table_begin() <= addr && addr < nul_chk_table_end(); } |
|
372 |
||
373 |
// entry points |
|
374 |
address entry_point() const { return _entry_point; } // normal entry point |
|
375 |
address verified_entry_point() const { return _verified_entry_point; } // if klass is correct |
|
376 |
||
377 |
// flag accessing and manipulation |
|
378 |
bool is_in_use() const { return flags.state == alive; } |
|
379 |
bool is_alive() const { return flags.state == alive || flags.state == not_entrant; } |
|
380 |
bool is_not_entrant() const { return flags.state == not_entrant; } |
|
381 |
bool is_zombie() const { return flags.state == zombie; } |
|
382 |
bool is_unloaded() const { return flags.state == unloaded; } |
|
383 |
||
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384 |
// Make the nmethod non entrant. The nmethod will continue to be |
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385 |
// alive. It is used when an uncommon trap happens. Returns true |
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386 |
// if this thread changed the state of the nmethod or false if |
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387 |
// another thread performed the transition. |
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|
388 |
bool make_not_entrant() { return make_not_entrant_or_zombie(not_entrant); } |
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|
389 |
bool make_zombie() { return make_not_entrant_or_zombie(zombie); } |
1 | 390 |
|
391 |
// used by jvmti to track if the unload event has been reported |
|
392 |
bool unload_reported() { return _unload_reported; } |
|
393 |
void set_unload_reported() { _unload_reported = true; } |
|
394 |
||
395 |
bool is_marked_for_deoptimization() const { return _markedForDeoptimization; } |
|
396 |
void mark_for_deoptimization() { _markedForDeoptimization = true; } |
|
397 |
||
398 |
void make_unloaded(BoolObjectClosure* is_alive, oop cause); |
|
399 |
||
400 |
bool has_dependencies() { return dependencies_size() != 0; } |
|
401 |
void flush_dependencies(BoolObjectClosure* is_alive); |
|
402 |
bool has_flushed_dependencies() { return flags.hasFlushedDependencies; } |
|
403 |
void set_has_flushed_dependencies() { |
|
404 |
check_safepoint(); |
|
405 |
assert(!has_flushed_dependencies(), "should only happen once"); |
|
406 |
flags.hasFlushedDependencies = 1; |
|
407 |
} |
|
408 |
||
409 |
bool is_marked_for_reclamation() const { return flags.markedForReclamation; } |
|
410 |
void mark_for_reclamation() { check_safepoint(); flags.markedForReclamation = 1; } |
|
411 |
void unmark_for_reclamation() { check_safepoint(); flags.markedForReclamation = 0; } |
|
412 |
||
413 |
bool has_unsafe_access() const { return flags.has_unsafe_access; } |
|
414 |
void set_has_unsafe_access(bool z) { flags.has_unsafe_access = z; } |
|
415 |
||
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|
416 |
bool has_method_handle_invokes() const { return flags.has_method_handle_invokes; } |
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|
417 |
void set_has_method_handle_invokes(bool z) { flags.has_method_handle_invokes = z; } |
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|
418 |
|
4750 | 419 |
bool is_speculatively_disconnected() const { return flags.speculatively_disconnected; } |
420 |
void set_speculatively_disconnected(bool z) { flags.speculatively_disconnected = z; } |
|
421 |
||
1 | 422 |
int level() const { return flags.level; } |
423 |
void set_level(int newLevel) { check_safepoint(); flags.level = newLevel; } |
|
424 |
||
425 |
int comp_level() const { return _comp_level; } |
|
426 |
||
427 |
int version() const { return flags.version; } |
|
428 |
void set_version(int v); |
|
429 |
||
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|
430 |
// Non-perm oop support |
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|
431 |
bool on_scavenge_root_list() const { return (_scavenge_root_state & 1) != 0; } |
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|
432 |
protected: |
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|
433 |
enum { npl_on_list = 0x01, npl_marked = 0x10 }; |
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|
434 |
void set_on_scavenge_root_list() { _scavenge_root_state = npl_on_list; } |
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|
435 |
void clear_on_scavenge_root_list() { _scavenge_root_state = 0; } |
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|
436 |
// assertion-checking and pruning logic uses the bits of _scavenge_root_state |
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|
437 |
#ifndef PRODUCT |
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|
438 |
void set_scavenge_root_marked() { _scavenge_root_state |= npl_marked; } |
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|
439 |
void clear_scavenge_root_marked() { _scavenge_root_state &= ~npl_marked; } |
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|
440 |
bool scavenge_root_not_marked() { return (_scavenge_root_state &~ npl_on_list) == 0; } |
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|
441 |
// N.B. there is no positive marked query, and we only use the not_marked query for asserts. |
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|
442 |
#endif //PRODUCT |
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|
443 |
nmethod* scavenge_root_link() const { return _scavenge_root_link; } |
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|
444 |
void set_scavenge_root_link(nmethod *n) { _scavenge_root_link = n; } |
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|
445 |
|
4750 | 446 |
nmethod* saved_nmethod_link() const { return _saved_nmethod_link; } |
447 |
void set_saved_nmethod_link(nmethod *n) { _saved_nmethod_link = n; } |
|
448 |
||
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|
449 |
public: |
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changeset
|
450 |
|
1 | 451 |
// Sweeper support |
452 |
long stack_traversal_mark() { return _stack_traversal_mark; } |
|
453 |
void set_stack_traversal_mark(long l) { _stack_traversal_mark = l; } |
|
454 |
||
455 |
// Exception cache support |
|
456 |
ExceptionCache* exception_cache() const { return _exception_cache; } |
|
457 |
void set_exception_cache(ExceptionCache *ec) { _exception_cache = ec; } |
|
458 |
address handler_for_exception_and_pc(Handle exception, address pc); |
|
459 |
void add_handler_for_exception_and_pc(Handle exception, address pc, address handler); |
|
460 |
void remove_from_exception_cache(ExceptionCache* ec); |
|
461 |
||
462 |
// implicit exceptions support |
|
463 |
address continuation_for_implicit_exception(address pc); |
|
464 |
||
465 |
// On-stack replacement support |
|
466 |
int osr_entry_bci() const { assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); return _entry_bci; } |
|
467 |
address osr_entry() const { assert(_entry_bci != InvocationEntryBci, "wrong kind of nmethod"); return _osr_entry_point; } |
|
468 |
void invalidate_osr_method(); |
|
3908
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|
469 |
nmethod* osr_link() const { return _osr_link; } |
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|
470 |
void set_osr_link(nmethod *n) { _osr_link = n; } |
1 | 471 |
|
472 |
// tells whether frames described by this nmethod can be deoptimized |
|
473 |
// note: native wrappers cannot be deoptimized. |
|
474 |
bool can_be_deoptimized() const { return is_java_method(); } |
|
475 |
||
476 |
// Inline cache support |
|
477 |
void clear_inline_caches(); |
|
478 |
void cleanup_inline_caches(); |
|
479 |
bool inlinecache_check_contains(address addr) const { |
|
480 |
return (addr >= instructions_begin() && addr < verified_entry_point()); |
|
481 |
} |
|
482 |
||
483 |
// unlink and deallocate this nmethod |
|
484 |
// Only NMethodSweeper class is expected to use this. NMethodSweeper is not |
|
485 |
// expected to use any other private methods/data in this class. |
|
486 |
||
487 |
protected: |
|
488 |
void flush(); |
|
489 |
||
490 |
public: |
|
491 |
// If returning true, it is unsafe to remove this nmethod even though it is a zombie |
|
492 |
// nmethod, since the VM might have a reference to it. Should only be called from a safepoint. |
|
493 |
bool is_locked_by_vm() const { return _lock_count >0; } |
|
494 |
||
495 |
// See comment at definition of _last_seen_on_stack |
|
496 |
void mark_as_seen_on_stack(); |
|
497 |
bool can_not_entrant_be_converted(); |
|
498 |
||
499 |
// Evolution support. We make old (discarded) compiled methods point to new methodOops. |
|
500 |
void set_method(methodOop method) { _method = method; } |
|
501 |
||
502 |
// GC support |
|
503 |
void do_unloading(BoolObjectClosure* is_alive, OopClosure* keep_alive, |
|
504 |
bool unloading_occurred); |
|
505 |
bool can_unload(BoolObjectClosure* is_alive, OopClosure* keep_alive, |
|
506 |
oop* root, bool unloading_occurred); |
|
507 |
||
508 |
void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, |
|
509 |
OopClosure* f); |
|
3913
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jrose
parents:
3912
diff
changeset
|
510 |
virtual void oops_do(OopClosure* f) { oops_do(f, false); } |
e049e6b81e11
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|
511 |
void oops_do(OopClosure* f, bool do_strong_roots_only); |
3908
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jrose
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|
512 |
bool detect_scavenge_root_oops(); |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
2131
diff
changeset
|
513 |
void verify_scavenge_root_oops() PRODUCT_RETURN; |
24b55ad4c228
6863023: need non-perm oops in code cache for JSR 292
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changeset
|
514 |
|
24b55ad4c228
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changeset
|
515 |
bool test_set_oops_do_mark(); |
24b55ad4c228
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changeset
|
516 |
static void oops_do_marking_prologue(); |
24b55ad4c228
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changeset
|
517 |
static void oops_do_marking_epilogue(); |
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|
518 |
static bool oops_do_marking_is_active() { return _oops_do_mark_nmethods != NULL; } |
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|
519 |
DEBUG_ONLY(bool test_oops_do_mark() { return _oops_do_mark_link != NULL; }) |
1 | 520 |
|
521 |
// ScopeDesc for an instruction |
|
522 |
ScopeDesc* scope_desc_at(address pc); |
|
523 |
||
524 |
private: |
|
525 |
ScopeDesc* scope_desc_in(address begin, address end); |
|
526 |
||
4749 | 527 |
address* orig_pc_addr(const frame* fr ) { return (address*) ((address)fr->unextended_sp() + _orig_pc_offset); } |
1 | 528 |
|
529 |
PcDesc* find_pc_desc_internal(address pc, bool approximate); |
|
530 |
||
531 |
PcDesc* find_pc_desc(address pc, bool approximate) { |
|
532 |
PcDesc* desc = _pc_desc_cache.last_pc_desc(); |
|
533 |
if (desc != NULL && desc->pc_offset() == pc - instructions_begin()) { |
|
534 |
return desc; |
|
535 |
} |
|
536 |
return find_pc_desc_internal(pc, approximate); |
|
537 |
} |
|
538 |
||
539 |
public: |
|
540 |
// ScopeDesc retrieval operation |
|
541 |
PcDesc* pc_desc_at(address pc) { return find_pc_desc(pc, false); } |
|
542 |
// pc_desc_near returns the first PcDesc at or after the givne pc. |
|
543 |
PcDesc* pc_desc_near(address pc) { return find_pc_desc(pc, true); } |
|
544 |
||
545 |
public: |
|
546 |
// copying of debugging information |
|
547 |
void copy_scopes_pcs(PcDesc* pcs, int count); |
|
548 |
void copy_scopes_data(address buffer, int size); |
|
549 |
||
4749 | 550 |
// deopt |
551 |
// return true is the pc is one would expect if the frame is being deopted. |
|
552 |
bool is_deopt_pc(address pc); |
|
1 | 553 |
// Accessor/mutator for the original pc of a frame before a frame was deopted. |
554 |
address get_original_pc(const frame* fr) { return *orig_pc_addr(fr); } |
|
555 |
void set_original_pc(const frame* fr, address pc) { *orig_pc_addr(fr) = pc; } |
|
556 |
||
4564
55dfb20908d0
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changeset
|
557 |
// MethodHandle |
55dfb20908d0
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
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changeset
|
558 |
bool is_method_handle_return(address return_pc); |
55dfb20908d0
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twisti
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changeset
|
559 |
|
1 | 560 |
// jvmti support: |
561 |
void post_compiled_method_load_event(); |
|
562 |
||
563 |
// verify operations |
|
564 |
void verify(); |
|
565 |
void verify_scopes(); |
|
566 |
void verify_interrupt_point(address interrupt_point); |
|
567 |
||
568 |
// printing support |
|
347
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diff
changeset
|
569 |
void print() const; |
df859fcca515
6667042: PrintAssembly option does not work without special plugin
jrose
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diff
changeset
|
570 |
void print_code(); |
1 | 571 |
void print_relocations() PRODUCT_RETURN; |
572 |
void print_pcs() PRODUCT_RETURN; |
|
573 |
void print_scopes() PRODUCT_RETURN; |
|
574 |
void print_dependencies() PRODUCT_RETURN; |
|
575 |
void print_value_on(outputStream* st) const PRODUCT_RETURN; |
|
576 |
void print_calls(outputStream* st) PRODUCT_RETURN; |
|
577 |
void print_handler_table() PRODUCT_RETURN; |
|
578 |
void print_nul_chk_table() PRODUCT_RETURN; |
|
347
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|
579 |
void print_nmethod(bool print_code); |
1 | 580 |
|
581 |
void print_on(outputStream* st, const char* title) const; |
|
582 |
||
583 |
// Logging |
|
584 |
void log_identity(xmlStream* log) const; |
|
585 |
void log_new_nmethod() const; |
|
4479
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|
586 |
void log_state_change() const; |
1 | 587 |
|
4584
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|
588 |
// Prints block-level comments, including nmethod specific block labels: |
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|
589 |
virtual void print_block_comment(outputStream* stream, address block_begin) { |
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|
590 |
print_nmethod_labels(stream, block_begin); |
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|
591 |
CodeBlob::print_block_comment(stream, block_begin); |
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|
592 |
} |
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|
593 |
void print_nmethod_labels(outputStream* stream, address block_begin); |
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|
594 |
|
1 | 595 |
// Prints a comment for one native instruction (reloc info, pc desc) |
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|
596 |
void print_code_comment_on(outputStream* st, int column, address begin, address end); |
1 | 597 |
static void print_statistics() PRODUCT_RETURN; |
598 |
||
599 |
// Compiler task identification. Note that all OSR methods |
|
600 |
// are numbered in an independent sequence if CICountOSR is true, |
|
601 |
// and native method wrappers are also numbered independently if |
|
602 |
// CICountNative is true. |
|
603 |
int compile_id() const { return _compile_id; } |
|
604 |
const char* compile_kind() const; |
|
605 |
||
606 |
// For debugging |
|
607 |
// CompiledIC* IC_at(char* p) const; |
|
608 |
// PrimitiveIC* primitiveIC_at(char* p) const; |
|
609 |
oop embeddedOop_at(address p); |
|
610 |
||
611 |
// tells if any of this method's dependencies have been invalidated |
|
612 |
// (this is expensive!) |
|
613 |
bool check_all_dependencies(); |
|
614 |
||
615 |
// tells if this compiled method is dependent on the given changes, |
|
616 |
// and the changes have invalidated it |
|
617 |
bool check_dependency_on(DepChange& changes); |
|
618 |
||
619 |
// Evolution support. Tells if this compiled method is dependent on any of |
|
620 |
// methods m() of class dependee, such that if m() in dependee is replaced, |
|
621 |
// this compiled method will have to be deoptimized. |
|
622 |
bool is_evol_dependent_on(klassOop dependee); |
|
623 |
||
624 |
// Fast breakpoint support. Tells if this compiled method is |
|
625 |
// dependent on the given method. Returns true if this nmethod |
|
626 |
// corresponds to the given method as well. |
|
627 |
bool is_dependent_on_method(methodOop dependee); |
|
628 |
||
629 |
// is it ok to patch at address? |
|
630 |
bool is_patchable_at(address instr_address); |
|
631 |
||
632 |
// UseBiasedLocking support |
|
633 |
ByteSize compiled_synchronized_native_basic_lock_owner_sp_offset() { |
|
634 |
return _compiled_synchronized_native_basic_lock_owner_sp_offset; |
|
635 |
} |
|
636 |
ByteSize compiled_synchronized_native_basic_lock_sp_offset() { |
|
637 |
return _compiled_synchronized_native_basic_lock_sp_offset; |
|
638 |
} |
|
639 |
||
640 |
// support for code generation |
|
641 |
static int verified_entry_point_offset() { return offset_of(nmethod, _verified_entry_point); } |
|
642 |
static int osr_entry_point_offset() { return offset_of(nmethod, _osr_entry_point); } |
|
643 |
static int entry_bci_offset() { return offset_of(nmethod, _entry_bci); } |
|
644 |
||
645 |
}; |
|
646 |
||
647 |
// Locks an nmethod so its code will not get removed, even if it is a zombie/not_entrant method |
|
648 |
class nmethodLocker : public StackObj { |
|
649 |
nmethod* _nm; |
|
650 |
||
651 |
static void lock_nmethod(nmethod* nm); // note: nm can be NULL |
|
652 |
static void unlock_nmethod(nmethod* nm); // (ditto) |
|
653 |
||
654 |
public: |
|
655 |
nmethodLocker(address pc); // derive nm from pc |
|
656 |
nmethodLocker(nmethod *nm) { _nm = nm; lock_nmethod(_nm); } |
|
657 |
nmethodLocker() { _nm = NULL; } |
|
658 |
~nmethodLocker() { unlock_nmethod(_nm); } |
|
659 |
||
660 |
nmethod* code() { return _nm; } |
|
661 |
void set_code(nmethod* new_nm) { |
|
662 |
unlock_nmethod(_nm); // note: This works even if _nm==new_nm. |
|
663 |
_nm = new_nm; |
|
664 |
lock_nmethod(_nm); |
|
665 |
} |
|
666 |
}; |