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comparison src/share/vm/code/nmethod.hpp @ 1563:1a5913bf5e19

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6951083: oops and relocations should part of nmethod not CodeBlob Summary: This moves the oops from Codeblob to nmethod. Reviewed-by: kvn, never
author twisti
date Thu, 20 May 2010 06:34:23 -0700
parents bfe29ec02863
children e9ff18c4ace7
comparison
equal deleted inserted replaced
1544:1a88d3c58e1d 1563:1a5913bf5e19
103 // A nmethod contains: 103 // A nmethod contains:
104 // - header (the nmethod structure) 104 // - header (the nmethod structure)
105 // [Relocation] 105 // [Relocation]
106 // - relocation information 106 // - relocation information
107 // - constant part (doubles, longs and floats used in nmethod) 107 // - constant part (doubles, longs and floats used in nmethod)
108 // - oop table
108 // [Code] 109 // [Code]
109 // - code body 110 // - code body
110 // - exception handler 111 // - exception handler
111 // - stub code 112 // - stub code
112 // [Debugging information] 113 // [Debugging information]
159 #ifdef HAVE_DTRACE_H 160 #ifdef HAVE_DTRACE_H
160 int _trap_offset; 161 int _trap_offset;
161 #endif // def HAVE_DTRACE_H 162 #endif // def HAVE_DTRACE_H
162 int _stub_offset; 163 int _stub_offset;
163 int _consts_offset; 164 int _consts_offset;
165 int _oops_offset; // offset to where embedded oop table begins (inside data)
164 int _scopes_data_offset; 166 int _scopes_data_offset;
165 int _scopes_pcs_offset; 167 int _scopes_pcs_offset;
166 int _dependencies_offset; 168 int _dependencies_offset;
167 int _handler_table_offset; 169 int _handler_table_offset;
168 int _nul_chk_table_offset; 170 int _nul_chk_table_offset;
345 address deopt_mh_handler_begin() const { return header_begin() + _deoptimize_mh_offset ; } 347 address deopt_mh_handler_begin() const { return header_begin() + _deoptimize_mh_offset ; }
346 address unwind_handler_begin () const { return _unwind_handler_offset != -1 ? (header_begin() + _unwind_handler_offset) : NULL; } 348 address unwind_handler_begin () const { return _unwind_handler_offset != -1 ? (header_begin() + _unwind_handler_offset) : NULL; }
347 address stub_begin () const { return header_begin() + _stub_offset ; } 349 address stub_begin () const { return header_begin() + _stub_offset ; }
348 address stub_end () const { return header_begin() + _consts_offset ; } 350 address stub_end () const { return header_begin() + _consts_offset ; }
349 address consts_begin () const { return header_begin() + _consts_offset ; } 351 address consts_begin () const { return header_begin() + _consts_offset ; }
350 address consts_end () const { return header_begin() + _scopes_data_offset ; } 352 address consts_end () const { return header_begin() + _oops_offset ; }
353 oop* oops_begin () const { return (oop*) (header_begin() + _oops_offset) ; }
354 oop* oops_end () const { return (oop*) (header_begin() + _scopes_data_offset) ; }
355
351 address scopes_data_begin () const { return header_begin() + _scopes_data_offset ; } 356 address scopes_data_begin () const { return header_begin() + _scopes_data_offset ; }
352 address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; } 357 address scopes_data_end () const { return header_begin() + _scopes_pcs_offset ; }
353 PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); } 358 PcDesc* scopes_pcs_begin () const { return (PcDesc*)(header_begin() + _scopes_pcs_offset ); }
354 PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset) ; } 359 PcDesc* scopes_pcs_end () const { return (PcDesc*)(header_begin() + _dependencies_offset) ; }
355 address dependencies_begin () const { return header_begin() + _dependencies_offset ; } 360 address dependencies_begin () const { return header_begin() + _dependencies_offset ; }
357 address handler_table_begin () const { return header_begin() + _handler_table_offset ; } 362 address handler_table_begin () const { return header_begin() + _handler_table_offset ; }
358 address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; } 363 address handler_table_end () const { return header_begin() + _nul_chk_table_offset ; }
359 address nul_chk_table_begin () const { return header_begin() + _nul_chk_table_offset ; } 364 address nul_chk_table_begin () const { return header_begin() + _nul_chk_table_offset ; }
360 address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; } 365 address nul_chk_table_end () const { return header_begin() + _nmethod_end_offset ; }
361 366
362 int code_size () const { return code_end () - code_begin (); } 367 // Sizes
363 int stub_size () const { return stub_end () - stub_begin (); } 368 int code_size () const { return code_end () - code_begin (); }
364 int consts_size () const { return consts_end () - consts_begin (); } 369 int stub_size () const { return stub_end () - stub_begin (); }
365 int scopes_data_size () const { return scopes_data_end () - scopes_data_begin (); } 370 int consts_size () const { return consts_end () - consts_begin (); }
366 int scopes_pcs_size () const { return (intptr_t)scopes_pcs_end () - (intptr_t)scopes_pcs_begin (); } 371 int oops_size () const { return (address) oops_end () - (address) oops_begin (); }
367 int dependencies_size () const { return dependencies_end () - dependencies_begin (); } 372 int scopes_data_size () const { return scopes_data_end () - scopes_data_begin (); }
368 int handler_table_size() const { return handler_table_end() - handler_table_begin(); } 373 int scopes_pcs_size () const { return (intptr_t) scopes_pcs_end () - (intptr_t) scopes_pcs_begin (); }
369 int nul_chk_table_size() const { return nul_chk_table_end() - nul_chk_table_begin(); } 374 int dependencies_size () const { return dependencies_end () - dependencies_begin (); }
375 int handler_table_size() const { return handler_table_end() - handler_table_begin(); }
376 int nul_chk_table_size() const { return nul_chk_table_end() - nul_chk_table_begin(); }
370 377
371 int total_size () const; 378 int total_size () const;
372 379
380 // Containment
373 bool code_contains (address addr) const { return code_begin () <= addr && addr < code_end (); } 381 bool code_contains (address addr) const { return code_begin () <= addr && addr < code_end (); }
374 bool stub_contains (address addr) const { return stub_begin () <= addr && addr < stub_end (); } 382 bool stub_contains (address addr) const { return stub_begin () <= addr && addr < stub_end (); }
375 bool consts_contains (address addr) const { return consts_begin () <= addr && addr < consts_end (); } 383 bool consts_contains (address addr) const { return consts_begin () <= addr && addr < consts_end (); }
384 bool oops_contains (oop* addr) const { return oops_begin () <= addr && addr < oops_end (); }
376 bool scopes_data_contains (address addr) const { return scopes_data_begin () <= addr && addr < scopes_data_end (); } 385 bool scopes_data_contains (address addr) const { return scopes_data_begin () <= addr && addr < scopes_data_end (); }
377 bool scopes_pcs_contains (PcDesc* addr) const { return scopes_pcs_begin () <= addr && addr < scopes_pcs_end (); } 386 bool scopes_pcs_contains (PcDesc* addr) const { return scopes_pcs_begin () <= addr && addr < scopes_pcs_end (); }
378 bool handler_table_contains(address addr) const { return handler_table_begin() <= addr && addr < handler_table_end(); } 387 bool handler_table_contains(address addr) const { return handler_table_begin() <= addr && addr < handler_table_end(); }
379 bool nul_chk_table_contains(address addr) const { return nul_chk_table_begin() <= addr && addr < nul_chk_table_end(); } 388 bool nul_chk_table_contains(address addr) const { return nul_chk_table_begin() <= addr && addr < nul_chk_table_end(); }
380 389
428 437
429 int comp_level() const { return _comp_level; } 438 int comp_level() const { return _comp_level; }
430 439
431 int version() const { return flags.version; } 440 int version() const { return flags.version; }
432 void set_version(int v); 441 void set_version(int v);
442
443 // Support for oops in scopes and relocs:
444 // Note: index 0 is reserved for null.
445 oop oop_at(int index) const { return index == 0 ? (oop) NULL: *oop_addr_at(index); }
446 oop* oop_addr_at(int index) const { // for GC
447 // relocation indexes are biased by 1 (because 0 is reserved)
448 assert(index > 0 && index <= oops_size(), "must be a valid non-zero index");
449 return &oops_begin()[index - 1];
450 }
451
452 void copy_oops(GrowableArray<jobject>* oops);
453
454 // Relocation support
455 private:
456 void fix_oop_relocations(address begin, address end, bool initialize_immediates);
457 inline void initialize_immediate_oop(oop* dest, jobject handle);
458
459 public:
460 void fix_oop_relocations(address begin, address end) { fix_oop_relocations(begin, end, false); }
461 void fix_oop_relocations() { fix_oop_relocations(NULL, NULL, false); }
462
463 bool is_at_poll_return(address pc);
464 bool is_at_poll_or_poll_return(address pc);
433 465
434 // Non-perm oop support 466 // Non-perm oop support
435 bool on_scavenge_root_list() const { return (_scavenge_root_state & 1) != 0; } 467 bool on_scavenge_root_list() const { return (_scavenge_root_state & 1) != 0; }
436 protected: 468 protected:
437 enum { npl_on_list = 0x01, npl_marked = 0x10 }; 469 enum { npl_on_list = 0x01, npl_marked = 0x10 };
509 bool can_unload(BoolObjectClosure* is_alive, OopClosure* keep_alive, 541 bool can_unload(BoolObjectClosure* is_alive, OopClosure* keep_alive,
510 oop* root, bool unloading_occurred); 542 oop* root, bool unloading_occurred);
511 543
512 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, 544 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map,
513 OopClosure* f); 545 OopClosure* f);
514 virtual void oops_do(OopClosure* f) { oops_do(f, false); } 546 void oops_do(OopClosure* f) { oops_do(f, false); }
515 void oops_do(OopClosure* f, bool do_strong_roots_only); 547 void oops_do(OopClosure* f, bool do_strong_roots_only);
516 bool detect_scavenge_root_oops(); 548 bool detect_scavenge_root_oops();
517 void verify_scavenge_root_oops() PRODUCT_RETURN; 549 void verify_scavenge_root_oops() PRODUCT_RETURN;
518 550
519 bool test_set_oops_do_mark(); 551 bool test_set_oops_do_mark();
520 static void oops_do_marking_prologue(); 552 static void oops_do_marking_prologue();