Mercurial > hg > truffle

comparison src/share/vm/oops/method.hpp @ 12264:b2e698d2276c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation Summary: Enhance method resolution and resulting data structures, plus some refactoring. Reviewed-by: twisti, acorn, jrose
author drchase
date Fri, 13 Sep 2013 22:38:02 -0400
parents 8947af8a9cec
children cefad50507d8 ac9cb1d5a202 c775af091fe9
comparison
equal deleted inserted replaced
12261:2c98370f2611 12264:b2e698d2276c
446 446
447 // vtable index 447 // vtable index
448 enum VtableIndexFlag { 448 enum VtableIndexFlag {
449 // Valid vtable indexes are non-negative (>= 0). 449 // Valid vtable indexes are non-negative (>= 0).
450 // These few negative values are used as sentinels. 450 // These few negative values are used as sentinels.
451 highest_unused_vtable_index_value = -5, 451 itable_index_max = -10, // first itable index, growing downward
452 pending_itable_index = -9, // itable index will be assigned
452 invalid_vtable_index = -4, // distinct from any valid vtable index 453 invalid_vtable_index = -4, // distinct from any valid vtable index
453 garbage_vtable_index = -3, // not yet linked; no vtable layout yet 454 garbage_vtable_index = -3, // not yet linked; no vtable layout yet
454 nonvirtual_vtable_index = -2 // there is no need for vtable dispatch 455 nonvirtual_vtable_index = -2 // there is no need for vtable dispatch
455 // 6330203 Note: Do not use -1, which was overloaded with many meanings. 456 // 6330203 Note: Do not use -1, which was overloaded with many meanings.
456 }; 457 };
457 DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; }) 458 DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; })
458 int vtable_index() const { assert(valid_vtable_index(), ""); 459 bool has_vtable_index() const { return _vtable_index >= 0; }
459 return _vtable_index; } 460 int vtable_index() const { return _vtable_index; }
460 void set_vtable_index(int index) { _vtable_index = index; } 461 void set_vtable_index(int index) { _vtable_index = index; }
462 DEBUG_ONLY(bool valid_itable_index() const { return _vtable_index <= pending_itable_index; })
463 bool has_itable_index() const { return _vtable_index <= itable_index_max; }
464 int itable_index() const { assert(valid_itable_index(), "");
465 return itable_index_max - _vtable_index; }
466 void set_itable_index(int index) { _vtable_index = itable_index_max - index; assert(valid_itable_index(), ""); }
461 467
462 // interpreter entry 468 // interpreter entry
463 address interpreter_entry() const { return _i2i_entry; } 469 address interpreter_entry() const { return _i2i_entry; }
464 // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry 470 // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry
465 void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; } 471 void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; }
558 // returns true if this is a vanilla constructor 564 // returns true if this is a vanilla constructor
559 bool is_vanilla_constructor() const; 565 bool is_vanilla_constructor() const;
560 566
561 // checks method and its method holder 567 // checks method and its method holder
562 bool is_final_method() const; 568 bool is_final_method() const;
563 bool is_strict_method() const; 569 bool is_final_method(AccessFlags class_access_flags) const;
564 570
565 // true if method needs no dynamic dispatch (final and/or no vtable entry) 571 // true if method needs no dynamic dispatch (final and/or no vtable entry)
566 bool can_be_statically_bound() const; 572 bool can_be_statically_bound() const;
573 bool can_be_statically_bound(AccessFlags class_access_flags) const;
567 574
568 // returns true if the method has any backward branches. 575 // returns true if the method has any backward branches.
569 bool has_loops() { 576 bool has_loops() {
570 return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag(); 577 return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag();
571 }; 578 };
737 // NOTE that this function can be called from a signal handler 744 // NOTE that this function can be called from a signal handler
738 // (see AsyncGetCallTrace support for Forte Analyzer) and this 745 // (see AsyncGetCallTrace support for Forte Analyzer) and this
739 // needs to be async-safe. No allocation should be done and 746 // needs to be async-safe. No allocation should be done and
740 // so handles are not used to avoid deadlock. 747 // so handles are not used to avoid deadlock.
741 jmethodID find_jmethod_id_or_null() { return method_holder()->jmethod_id_or_null(this); } 748 jmethodID find_jmethod_id_or_null() { return method_holder()->jmethod_id_or_null(this); }
742
743 // JNI static invoke cached itable index accessors
744 int cached_itable_index() { return method_holder()->cached_itable_index(method_idnum()); }
745 void set_cached_itable_index(int index) { method_holder()->set_cached_itable_index(method_idnum(), index); }
746 749
747 // Support for inlining of intrinsic methods 750 // Support for inlining of intrinsic methods
748 vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; } 751 vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; }
749 void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; } 752 void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; }
750 753