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6655638: dynamic languages need method handles

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Initial implementation, with known omissions (x86/64, sparc, compiler optim., c-oops, C++ interp.)

Reviewed-by: kvn, twisti, never
This commit is contained in:
John R Rose 2009-04-08 10:56:49 -07:00
parent 318da3f68c
commit ce0c084720
63 changed files with 5815 additions and 70 deletions
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13
hotspot/src/share/vm/oops/methodOop.hpp
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@ -320,6 +320,7 @@ class methodOopDesc : public oopDesc {
enum VtableIndexFlag {
// Valid vtable indexes are non-negative (>= 0).
// These few negative values are used as sentinels.
highest_unused_vtable_index_value = -5,
invalid_vtable_index = -4, // distinct from any valid vtable index
garbage_vtable_index = -3, // not yet linked; no vtable layout yet
nonvirtual_vtable_index = -2 // there is no need for vtable dispatch
@ -523,6 +524,18 @@ class methodOopDesc : public oopDesc {
// Reflection support
bool is_overridden_in(klassOop k) const;
// JSR 292 support
bool is_method_handle_invoke() const { return access_flags().is_method_handle_invoke(); }
static methodHandle make_invoke_method(KlassHandle holder,
symbolHandle signature,
Handle method_type,
TRAPS);
// these operate only on invoke methods:
oop method_handle_type() const;
static jint* method_type_offsets_chain(); // series of pointer-offsets, terminated by -1
// presize interpreter frames for extra interpreter stack entries, if needed
static int extra_stack_entries() { return EnableMethodHandles ? (int)MethodHandlePushLimit : 0; }
static int extra_stack_words(); // = extra_stack_entries() * Interpreter::stackElementSize()
// RedefineClasses() support:
bool is_old() const { return access_flags().is_old(); }
void set_is_old() { _access_flags.set_is_old(); }