73
74 // Determines whether this nmethod is unloaded when the
75 // referent in _jvmci_installed_code is cleared. This
76 // will be false if the referent is initialized to a
77 // HotSpotNMethod object whose isDefault field is true.
78 // That is, installed code other than a "default"
79 // HotSpotNMethod causes nmethod unloading.
80 // This field is ignored once _jvmci_installed_code is NULL.
81 bool _jvmci_installed_code_triggers_invalidation;
82 #endif
83
84 // To support simple linked-list chaining of nmethods:
85 nmethod* _osr_link; // from InstanceKlass::osr_nmethods_head
86
87 static nmethod* volatile _oops_do_mark_nmethods;
88 nmethod* volatile _oops_do_mark_link;
89
90 // offsets for entry points
91 address _entry_point; // entry point with class check
92 address _verified_entry_point; // entry point without class check
93 address _osr_entry_point; // entry point for on stack replacement
94
95 // Offsets for different nmethod parts
96 int _exception_offset;
97 // Offset of the unwind handler if it exists
98 int _unwind_handler_offset;
99
100 int _consts_offset;
101 int _stub_offset;
102 int _oops_offset; // offset to where embedded oop table begins (inside data)
103 int _metadata_offset; // embedded meta data table
104 int _scopes_data_offset;
105 int _scopes_pcs_offset;
106 int _dependencies_offset;
107 int _handler_table_offset;
108 int _nul_chk_table_offset;
109 int _nmethod_end_offset;
110
111 int code_offset() const { return (address) code_begin() - header_begin(); }
112
300 int dependencies_size () const { return dependencies_end () - dependencies_begin (); }
301
302 int oops_count() const { assert(oops_size() % oopSize == 0, ""); return (oops_size() / oopSize) + 1; }
303 int metadata_count() const { assert(metadata_size() % wordSize == 0, ""); return (metadata_size() / wordSize) + 1; }
304
305 int total_size () const;
306
307 void dec_hotness_counter() { _hotness_counter--; }
308 void set_hotness_counter(int val) { _hotness_counter = val; }
309 int hotness_counter() const { return _hotness_counter; }
310
311 // Containment
312 bool oops_contains (oop* addr) const { return oops_begin () <= addr && addr < oops_end (); }
313 bool metadata_contains (Metadata** addr) const { return metadata_begin () <= addr && addr < metadata_end (); }
314 bool scopes_data_contains (address addr) const { return scopes_data_begin () <= addr && addr < scopes_data_end (); }
315 bool scopes_pcs_contains (PcDesc* addr) const { return scopes_pcs_begin () <= addr && addr < scopes_pcs_end (); }
316
317 // entry points
318 address entry_point() const { return _entry_point; } // normal entry point
319 address verified_entry_point() const { return _verified_entry_point; } // if klass is correct
320
321 // flag accessing and manipulation
322 bool is_not_installed() const { return _state == not_installed; }
323 bool is_in_use() const { return _state <= in_use; }
324 bool is_alive() const { return _state < zombie; }
325 bool is_not_entrant() const { return _state == not_entrant; }
326 bool is_zombie() const { return _state == zombie; }
327 bool is_unloaded() const { return _state == unloaded; }
328
329 void clear_unloading_state();
330 virtual bool is_unloading();
331 virtual void do_unloading(bool unloading_occurred);
332
333 #if INCLUDE_RTM_OPT
334 // rtm state accessing and manipulating
335 RTMState rtm_state() const { return _rtm_state; }
336 void set_rtm_state(RTMState state) { _rtm_state = state; }
337 #endif
338
339 void make_in_use() { _state = in_use; }
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73
74 // Determines whether this nmethod is unloaded when the
75 // referent in _jvmci_installed_code is cleared. This
76 // will be false if the referent is initialized to a
77 // HotSpotNMethod object whose isDefault field is true.
78 // That is, installed code other than a "default"
79 // HotSpotNMethod causes nmethod unloading.
80 // This field is ignored once _jvmci_installed_code is NULL.
81 bool _jvmci_installed_code_triggers_invalidation;
82 #endif
83
84 // To support simple linked-list chaining of nmethods:
85 nmethod* _osr_link; // from InstanceKlass::osr_nmethods_head
86
87 static nmethod* volatile _oops_do_mark_nmethods;
88 nmethod* volatile _oops_do_mark_link;
89
90 // offsets for entry points
91 address _entry_point; // entry point with class check
92 address _verified_entry_point; // entry point without class check
93 address _verified_value_entry_point; // value type entry point without class check
94 address _osr_entry_point; // entry point for on stack replacement
95
96 // Offsets for different nmethod parts
97 int _exception_offset;
98 // Offset of the unwind handler if it exists
99 int _unwind_handler_offset;
100
101 int _consts_offset;
102 int _stub_offset;
103 int _oops_offset; // offset to where embedded oop table begins (inside data)
104 int _metadata_offset; // embedded meta data table
105 int _scopes_data_offset;
106 int _scopes_pcs_offset;
107 int _dependencies_offset;
108 int _handler_table_offset;
109 int _nul_chk_table_offset;
110 int _nmethod_end_offset;
111
112 int code_offset() const { return (address) code_begin() - header_begin(); }
113
301 int dependencies_size () const { return dependencies_end () - dependencies_begin (); }
302
303 int oops_count() const { assert(oops_size() % oopSize == 0, ""); return (oops_size() / oopSize) + 1; }
304 int metadata_count() const { assert(metadata_size() % wordSize == 0, ""); return (metadata_size() / wordSize) + 1; }
305
306 int total_size () const;
307
308 void dec_hotness_counter() { _hotness_counter--; }
309 void set_hotness_counter(int val) { _hotness_counter = val; }
310 int hotness_counter() const { return _hotness_counter; }
311
312 // Containment
313 bool oops_contains (oop* addr) const { return oops_begin () <= addr && addr < oops_end (); }
314 bool metadata_contains (Metadata** addr) const { return metadata_begin () <= addr && addr < metadata_end (); }
315 bool scopes_data_contains (address addr) const { return scopes_data_begin () <= addr && addr < scopes_data_end (); }
316 bool scopes_pcs_contains (PcDesc* addr) const { return scopes_pcs_begin () <= addr && addr < scopes_pcs_end (); }
317
318 // entry points
319 address entry_point() const { return _entry_point; } // normal entry point
320 address verified_entry_point() const { return _verified_entry_point; } // if klass is correct
321 address verified_value_entry_point() const { return _verified_value_entry_point; } // pass value type args as oops
322
323 // flag accessing and manipulation
324 bool is_not_installed() const { return _state == not_installed; }
325 bool is_in_use() const { return _state <= in_use; }
326 bool is_alive() const { return _state < zombie; }
327 bool is_not_entrant() const { return _state == not_entrant; }
328 bool is_zombie() const { return _state == zombie; }
329 bool is_unloaded() const { return _state == unloaded; }
330
331 void clear_unloading_state();
332 virtual bool is_unloading();
333 virtual void do_unloading(bool unloading_occurred);
334
335 #if INCLUDE_RTM_OPT
336 // rtm state accessing and manipulating
337 RTMState rtm_state() const { return _rtm_state; }
338 void set_rtm_state(RTMState state) { _rtm_state = state; }
339 #endif
340
341 void make_in_use() { _state = in_use; }
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