#ifndef SHARE_VM_OOPS_METHODOOP_HPP

#define SHARE_VM_OOPS_METHODOOP_HPP

#include "classfile/vmSymbols.hpp"

#include "code/compressedStream.hpp"

#include "compiler/oopMap.hpp"

#include "interpreter/invocationCounter.hpp"

#include "oops/constMethodOop.hpp"

#include "oops/constantPoolOop.hpp"

#include "oops/instanceKlass.hpp"

#include "oops/oop.hpp"

#include "oops/typeArrayOop.hpp"

#include "utilities/accessFlags.hpp"

#include "utilities/growableArray.hpp"

class CheckedExceptionElement;

class LocalVariableTableElement;

class AdapterHandlerEntry;

class methodDataOopDesc;

class methodOopDesc : public oopDesc {

friend class methodKlass;

friend class VMStructs;

private:

constMethodOop _constMethod; // Method read-only data.

methodDataOop _method_data;

int _interpreter_invocation_count; // Count of times invoked (reused as prev_event_count in tiered)

AccessFlags _access_flags; // Access flags

int _vtable_index; // vtable index of this method (see VtableIndexFlag)

// note: can have vtables with >2**16 elements (because of inheritance)

#ifdef CC_INTERP

int _result_index; // C++ interpreter needs for converting results to/from stack

#endif

u2 _method_size; // size of this object

u2 _max_stack; // Maximum number of entries on the expression stack

u2 _max_locals; // Number of local variables used by this method

u2 _size_of_parameters; // size of the parameter block (receiver + arguments) in words

u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none)

u1 _jfr_towrite : 1, // Flags

_force_inline : 1,

_hidden : 1,

_dont_inline : 1,

: 4;

u2 _interpreter_throwout_count; // Count of times method was exited via exception while interpreting

u2 _number_of_breakpoints; // fullspeed debugging support

InvocationCounter _invocation_counter; // Incremented before each activation of the method - used to trigger frequency-based optimizations

InvocationCounter _backedge_counter; // Incremented before each backedge taken - used to trigger frequencey-based optimizations

#ifdef TIERED

jlong _prev_time; // Previous time the rate was acquired

float _rate; // Events (invocation and backedge counter increments) per millisecond

#endif

#ifndef PRODUCT

int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging)

#endif

// Entry point for calling both from and to the interpreter.

address _i2i_entry; // All-args-on-stack calling convention

// Adapter blob (i2c/c2i) for this methodOop. Set once when method is linked.

AdapterHandlerEntry* _adapter;

// Entry point for calling from compiled code, to compiled code if it exists

// or else the interpreter.

volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry()

// The entry point for calling both from and to compiled code is

// "_code->entry_point()". Because of tiered compilation and de-opt, this

// field can come and go. It can transition from NULL to not-null at any

// time (whenever a compile completes). It can transition from not-null to

// NULL only at safepoints (because of a de-opt).

nmethod* volatile _code; // Points to the corresponding piece of native code

volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry

public:

// accessors for instance variables

constMethodOop constMethod() const { return _constMethod; }

void set_constMethod(constMethodOop xconst) { oop_store_without_check((oop*)&_constMethod, (oop)xconst); }

static address make_adapters(methodHandle mh, TRAPS);

volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); }

volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); }

// access flag

AccessFlags access_flags() const { return _access_flags; }

void set_access_flags(AccessFlags flags) { _access_flags = flags; }

// name

Symbol* name() const { return constants()->symbol_at(name_index()); }

int name_index() const { return constMethod()->name_index(); }

void set_name_index(int index) { constMethod()->set_name_index(index); }

// signature

Symbol* signature() const { return constants()->symbol_at(signature_index()); }

int signature_index() const { return constMethod()->signature_index(); }

void set_signature_index(int index) { constMethod()->set_signature_index(index); }

// generics support

Symbol* generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? constants()->symbol_at(idx) : (Symbol*)NULL); }

int generic_signature_index() const { return constMethod()->generic_signature_index(); }

void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); }

// annotations support

typeArrayOop annotations() const { return instanceKlass::cast(method_holder())->get_method_annotations_of(method_idnum()); }

typeArrayOop parameter_annotations() const { return instanceKlass::cast(method_holder())->get_method_parameter_annotations_of(method_idnum()); }

typeArrayOop annotation_default() const { return instanceKlass::cast(method_holder())->get_method_default_annotations_of(method_idnum()); }

#ifdef CC_INTERP

void set_result_index(BasicType type);

int result_index() { return _result_index; }

#endif

// Helper routine: get klass name + "." + method name + signature as

// C string, for the purpose of providing more useful NoSuchMethodErrors

// and fatal error handling. The string is allocated in resource

// area if a buffer is not provided by the caller.

char* name_and_sig_as_C_string() const;

char* name_and_sig_as_C_string(char* buf, int size) const;

// Static routine in the situations we don't have a methodOop

static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature);

static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size);

Bytecodes::Code java_code_at(int bci) const {

return Bytecodes::java_code_at(this, bcp_from(bci));

}

Bytecodes::Code code_at(int bci) const {

return Bytecodes::code_at(this, bcp_from(bci));

}

// JVMTI breakpoints

Bytecodes::Code orig_bytecode_at(int bci) const;

void set_orig_bytecode_at(int bci, Bytecodes::Code code);

void set_breakpoint(int bci);

void clear_breakpoint(int bci);

void clear_all_breakpoints();

// Tracking number of breakpoints, for fullspeed debugging.

// Only mutated by VM thread.

u2 number_of_breakpoints() const { return _number_of_breakpoints; }

void incr_number_of_breakpoints() { ++_number_of_breakpoints; }

void decr_number_of_breakpoints() { --_number_of_breakpoints; }

// Initialization only

void clear_number_of_breakpoints() { _number_of_breakpoints = 0; }

// index into instanceKlass methods() array

// note: also used by jfr

u2 method_idnum() const { return constMethod()->method_idnum(); }

void set_method_idnum(u2 idnum) { constMethod()->set_method_idnum(idnum); }

// code size

int code_size() const { return constMethod()->code_size(); }

// method size

int method_size() const { return _method_size; }

void set_method_size(int size) {

assert(0 <= size && size < (1 << 16), "invalid method size");

_method_size = size;

}

// constant pool for klassOop holding this method

constantPoolOop constants() const { return constMethod()->constants(); }

void set_constants(constantPoolOop c) { constMethod()->set_constants(c); }

// max stack

// return original max stack size for method verification

int verifier_max_stack() const { return _max_stack; }

int max_stack() const { return _max_stack + extra_stack_entries(); }

void set_max_stack(int size) { _max_stack = size; }

// max locals

int max_locals() const { return _max_locals; }

void set_max_locals(int size) { _max_locals = size; }

int highest_comp_level() const;

void set_highest_comp_level(int level);

int highest_osr_comp_level() const;

void set_highest_osr_comp_level(int level);

// Count of times method was exited via exception while interpreting

void interpreter_throwout_increment() {

if (_interpreter_throwout_count < 65534) {

_interpreter_throwout_count++;

}

}

int interpreter_throwout_count() const { return _interpreter_throwout_count; }

void set_interpreter_throwout_count(int count) { _interpreter_throwout_count = count; }

// size of parameters

int size_of_parameters() const { return _size_of_parameters; }

bool has_stackmap_table() const {

return constMethod()->has_stackmap_table();

}

typeArrayOop stackmap_data() const {

return constMethod()->stackmap_data();

}

void set_stackmap_data(typeArrayOop sd) {

constMethod()->set_stackmap_data(sd);

}

// exception handler table

bool has_exception_handler() const

{ return constMethod()->has_exception_handler(); }

int exception_table_length() const

{ return constMethod()->exception_table_length(); }

ExceptionTableElement* exception_table_start() const

{ return constMethod()->exception_table_start(); }

// Finds the first entry point bci of an exception handler for an

// exception of klass ex_klass thrown at throw_bci. A value of NULL

// for ex_klass indicates that the exception klass is not known; in

// this case it matches any constraint class. Returns -1 if the

// exception cannot be handled in this method. The handler

// constraint classes are loaded if necessary. Note that this may

// throw an exception if loading of the constraint classes causes

// an IllegalAccessError (bugid 4307310) or an OutOfMemoryError.

// If an exception is thrown, returns the bci of the

// exception handler which caused the exception to be thrown, which

// is needed for proper retries. See, for example,

// InterpreterRuntime::exception_handler_for_exception.

static int fast_exception_handler_bci_for(methodHandle mh, KlassHandle ex_klass, int throw_bci, TRAPS);

// method data access

methodDataOop method_data() const {

return _method_data;

}

void set_method_data(methodDataOop data) {

oop_store_without_check((oop*)&_method_data, (oop)data);

}

// invocation counter

InvocationCounter* invocation_counter() { return &_invocation_counter; }

InvocationCounter* backedge_counter() { return &_backedge_counter; }

#ifdef TIERED

// We are reusing interpreter_invocation_count as a holder for the previous event count!

// We can do that since interpreter_invocation_count is not used in tiered.

int prev_event_count() const { return _interpreter_invocation_count; }

void set_prev_event_count(int count) { _interpreter_invocation_count = count; }

jlong prev_time() const { return _prev_time; }

void set_prev_time(jlong time) { _prev_time = time; }

float rate() const { return _rate; }

void set_rate(float rate) { _rate = rate; }

#endif

int invocation_count();

int backedge_count();

bool was_executed_more_than(int n);

bool was_never_executed() { return !was_executed_more_than(0); }

static void build_interpreter_method_data(methodHandle method, TRAPS);

int interpreter_invocation_count() {

if (TieredCompilation) return invocation_count();

else return _interpreter_invocation_count;

}

void set_interpreter_invocation_count(int count) { _interpreter_invocation_count = count; }

int increment_interpreter_invocation_count() {

if (TieredCompilation) ShouldNotReachHere();

return ++_interpreter_invocation_count;

}

#ifndef PRODUCT

int compiled_invocation_count() const { return _compiled_invocation_count; }

void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; }

#endif // not PRODUCT

// Clear (non-shared space) pointers which could not be relevant

// if this (shared) method were mapped into another JVM.

void remove_unshareable_info();

// nmethod/verified compiler entry

address verified_code_entry();

bool check_code() const; // Not inline to avoid circular ref

nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); }

void clear_code(); // Clear out any compiled code

static void set_code(methodHandle mh, nmethod* code);

void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; }

address get_i2c_entry();

address get_c2i_entry();

address get_c2i_unverified_entry();

AdapterHandlerEntry* adapter() { return _adapter; }

// setup entry points

void link_method(methodHandle method, TRAPS);

// clear entry points. Used by sharing code

void unlink_method();

// vtable index

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

// 6330203 Note: Do not use -1, which was overloaded with many meanings.

};

DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; })

int vtable_index() const { assert(valid_vtable_index(), "");

return _vtable_index; }

void set_vtable_index(int index) { _vtable_index = index; }

// interpreter entry

address interpreter_entry() const { return _i2i_entry; }

// Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry

void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; }

int interpreter_kind(void) {

return constMethod()->interpreter_kind();

}

void set_interpreter_kind();

void set_interpreter_kind(int kind) {

constMethod()->set_interpreter_kind(kind);

}

// native function (used for native methods only)

enum {

native_bind_event_is_interesting = true

};

address native_function() const { return *(native_function_addr()); }

address critical_native_function();

// Must specify a real function (not NULL).

// Use clear_native_function() to unregister.

void set_native_function(address function, bool post_event_flag);

bool has_native_function() const;

void clear_native_function();

// signature handler (used for native methods only)

address signature_handler() const { return *(signature_handler_addr()); }

void set_signature_handler(address handler);

// Interpreter oopmap support

void mask_for(int bci, InterpreterOopMap* mask);

#ifndef PRODUCT

// operations on invocation counter

void print_invocation_count();

#endif

// byte codes

void set_code(address code) { return constMethod()->set_code(code); }

address code_base() const { return constMethod()->code_base(); }

bool contains(address bcp) const { return constMethod()->contains(bcp); }

// prints byte codes

void print_codes() const { print_codes_on(tty); }

void print_codes_on(outputStream* st) const PRODUCT_RETURN;

void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN;

// checked exceptions

int checked_exceptions_length() const

{ return constMethod()->checked_exceptions_length(); }

CheckedExceptionElement* checked_exceptions_start() const

{ return constMethod()->checked_exceptions_start(); }

// localvariable table

bool has_localvariable_table() const

{ return constMethod()->has_localvariable_table(); }

int localvariable_table_length() const

{ return constMethod()->localvariable_table_length(); }

LocalVariableTableElement* localvariable_table_start() const

{ return constMethod()->localvariable_table_start(); }

bool has_linenumber_table() const

{ return constMethod()->has_linenumber_table(); }

u_char* compressed_linenumber_table() const

{ return constMethod()->compressed_linenumber_table(); }

// method holder (the klassOop holding this method)

klassOop method_holder() const { return constants()->pool_holder(); }

void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments)

Symbol* klass_name() const; // returns the name of the method holder

BasicType result_type() const; // type of the method result

int result_type_index() const; // type index of the method result

bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); }

bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); }

// Checked exceptions thrown by this method (resolved to mirrors)

objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); }

// Access flags

bool is_public() const { return access_flags().is_public(); }

bool is_private() const { return access_flags().is_private(); }

bool is_protected() const { return access_flags().is_protected(); }

bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); }

bool is_static() const { return access_flags().is_static(); }

bool is_final() const { return access_flags().is_final(); }

bool is_synchronized() const { return access_flags().is_synchronized();}

bool is_native() const { return access_flags().is_native(); }

bool is_abstract() const { return access_flags().is_abstract(); }

bool is_strict() const { return access_flags().is_strict(); }

bool is_synthetic() const { return access_flags().is_synthetic(); }

// returns true if contains only return operation

bool is_empty_method() const;

// returns true if this is a vanilla constructor

bool is_vanilla_constructor() const;

// checks method and its method holder

bool is_final_method() const;

bool is_strict_method() const;

// true if method needs no dynamic dispatch (final and/or no vtable entry)

bool can_be_statically_bound() const;

// returns true if the method has any backward branches.

bool has_loops() {

return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag();

};

bool compute_has_loops_flag();

bool has_jsrs() {

return access_flags().has_jsrs();

};

void set_has_jsrs() {

_access_flags.set_has_jsrs();

}

// returns true if the method has any monitors.

bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); }

bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); }

void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); }

// monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes

// propererly nest in the method. It might return false, even though they actually nest properly, since the info.

// has not been computed yet.

bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); }

void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); }

// returns true if the method is an accessor function (setter/getter).

bool is_accessor() const;

// returns true if the method is an initializer (<init> or <clinit>).

bool is_initializer() const;

// returns true if the method is static OR if the classfile version < 51

bool has_valid_initializer_flags() const;

// returns true if the method name is <clinit> and the method has

// valid static initializer flags.

bool is_static_initializer() const;

// compiled code support

// NOTE: code() is inherently racy as deopt can be clearing code

// simultaneously. Use with caution.

bool has_compiled_code() const { return code() != NULL; }

// sizing

static int object_size(bool is_native);

static int header_size() { return sizeof(methodOopDesc)/HeapWordSize; }

int object_size() const { return method_size(); }

bool object_is_parsable() const { return method_size() > 0; }

// interpreter support

static ByteSize const_offset() { return byte_offset_of(methodOopDesc, _constMethod ); }

static ByteSize access_flags_offset() { return byte_offset_of(methodOopDesc, _access_flags ); }

#ifdef CC_INTERP

static ByteSize result_index_offset() { return byte_offset_of(methodOopDesc, _result_index ); }

#endif /* CC_INTERP */

static ByteSize size_of_locals_offset() { return byte_offset_of(methodOopDesc, _max_locals ); }

static ByteSize size_of_parameters_offset() { return byte_offset_of(methodOopDesc, _size_of_parameters); }

static ByteSize from_compiled_offset() { return byte_offset_of(methodOopDesc, _from_compiled_entry); }

static ByteSize code_offset() { return byte_offset_of(methodOopDesc, _code); }

static ByteSize invocation_counter_offset() { return byte_offset_of(methodOopDesc, _invocation_counter); }

static ByteSize backedge_counter_offset() { return byte_offset_of(methodOopDesc, _backedge_counter); }

static ByteSize method_data_offset() {

return byte_offset_of(methodOopDesc, _method_data);

}

static ByteSize interpreter_invocation_counter_offset() { return byte_offset_of(methodOopDesc, _interpreter_invocation_count); }

#ifndef PRODUCT

static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(methodOopDesc, _compiled_invocation_count); }

#endif // not PRODUCT

static ByteSize native_function_offset() { return in_ByteSize(sizeof(methodOopDesc)); }

static ByteSize from_interpreted_offset() { return byte_offset_of(methodOopDesc, _from_interpreted_entry ); }

static ByteSize interpreter_entry_offset() { return byte_offset_of(methodOopDesc, _i2i_entry ); }

static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(methodOopDesc) + wordSize); }

static ByteSize max_stack_offset() { return byte_offset_of(methodOopDesc, _max_stack ); }

// for code generation

static int method_data_offset_in_bytes() { return offset_of(methodOopDesc, _method_data); }

static int interpreter_invocation_counter_offset_in_bytes()

{ return offset_of(methodOopDesc, _interpreter_invocation_count); }

static int intrinsic_id_offset_in_bytes() { return offset_of(methodOopDesc, _intrinsic_id); }

static int intrinsic_id_size_in_bytes() { return sizeof(u1); }

// Static methods that are used to implement member methods where an exposed this pointer

// is needed due to possible GCs

static objArrayHandle resolved_checked_exceptions_impl(methodOop this_oop, TRAPS);

// Returns the byte code index from the byte code pointer

int bci_from(address bcp) const;

address bcp_from(int bci) const;

int validate_bci_from_bcx(intptr_t bcx) const;

// Returns the line number for a bci if debugging information for the method is prowided,

// -1 is returned otherwise.

int line_number_from_bci(int bci) const;

// Reflection support

bool is_overridden_in(klassOop k) const;

// JSR 292 support

bool is_method_handle_intrinsic() const; // MethodHandles::is_signature_polymorphic_intrinsic(intrinsic_id)

bool is_compiled_lambda_form() const; // intrinsic_id() == vmIntrinsics::_compiledLambdaForm

bool has_member_arg() const; // intrinsic_id() == vmIntrinsics::_linkToSpecial, etc.

static methodHandle make_method_handle_intrinsic(vmIntrinsics::ID iid, // _invokeBasic, _linkToVirtual

Symbol* signature, //anything at all

TRAPS);

static klassOop check_non_bcp_klass(klassOop klass);

// these operate only on invoke methods:

// presize interpreter frames for extra interpreter stack entries, if needed

// method handles want to be able to push a few extra values (e.g., a bound receiver), and

// invokedynamic sometimes needs to push a bootstrap method, call site, and arglist,

// all without checking for a stack overflow

static int extra_stack_entries() { return EnableInvokeDynamic ? 2 : 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(); }

bool is_obsolete() const { return access_flags().is_obsolete(); }

void set_is_obsolete() { _access_flags.set_is_obsolete(); }

// see the definition in methodOop.cpp for the gory details

bool should_not_be_cached() const;

// JVMTI Native method prefixing support:

bool is_prefixed_native() const { return access_flags().is_prefixed_native(); }

void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); }

// Rewriting support

static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length,

u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS);

// Get this method's jmethodID -- allocate if it doesn't exist

jmethodID jmethod_id() { methodHandle this_h(this);

return instanceKlass::get_jmethod_id(method_holder(), this_h); }

// Lookup the jmethodID for this method. Return NULL if not found.

// NOTE that this function can be called from a signal handler

// (see AsyncGetCallTrace support for Forte Analyzer) and this

// needs to be async-safe. No allocation should be done and

// so handles are not used to avoid deadlock.

jmethodID find_jmethod_id_or_null() { return instanceKlass::cast(method_holder())->jmethod_id_or_null(this); }

// JNI static invoke cached itable index accessors

int cached_itable_index() { return instanceKlass::cast(method_holder())->cached_itable_index(method_idnum()); }

void set_cached_itable_index(int index) { instanceKlass::cast(method_holder())->set_cached_itable_index(method_idnum(), index); }

// Support for inlining of intrinsic methods

vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; }

void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; }

// Helper routines for intrinsic_id() and vmIntrinsics::method().

void init_intrinsic_id(); // updates from _none if a match

static vmSymbols::SID klass_id_for_intrinsics(klassOop holder);

bool jfr_towrite() { return _jfr_towrite; }

void set_jfr_towrite(bool towrite) { _jfr_towrite = towrite; }

bool force_inline() { return _force_inline; }

void set_force_inline(bool x) { _force_inline = x; }

bool dont_inline() { return _dont_inline; }

void set_dont_inline(bool x) { _dont_inline = x; }

bool is_hidden() { return _hidden; }

void set_hidden(bool x) { _hidden = x; }

// On-stack replacement support

bool has_osr_nmethod(int level, bool match_level) {

return instanceKlass::cast(method_holder())->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL;

}

nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) {

return instanceKlass::cast(method_holder())->lookup_osr_nmethod(this, bci, level, match_level);

}

// Inline cache support

void cleanup_inline_caches();

// Find if klass for method is loaded

bool is_klass_loaded_by_klass_index(int klass_index) const;

bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const;

// Indicates whether compilation failed earlier for this method, or

// whether it is not compilable for another reason like having a

// breakpoint set in it.

bool is_not_compilable(int comp_level = CompLevel_any) const;

void set_not_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL);

void set_not_compilable_quietly(int comp_level = CompLevel_all) {

set_not_compilable(comp_level, false);

}

bool is_not_osr_compilable(int comp_level = CompLevel_any) const;

void set_not_osr_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL);

void set_not_osr_compilable_quietly(int comp_level = CompLevel_all) {

set_not_osr_compilable(comp_level, false);

}

private:

void print_made_not_compilable(int comp_level, bool is_osr, bool report, const char* reason);

public:

bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); }

void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); }

bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); }

void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); }

bool is_not_c1_osr_compilable() const { return is_not_c1_compilable(); } // don't waste an accessFlags bit

void set_not_c1_osr_compilable() { set_not_c1_compilable(); } // don't waste an accessFlags bit

bool is_not_c2_osr_compilable() const { return access_flags().is_not_c2_osr_compilable(); }

void set_not_c2_osr_compilable() { _access_flags.set_not_c2_osr_compilable(); }

// Background compilation support

bool queued_for_compilation() const { return access_flags().queued_for_compilation(); }

void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); }

void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); }

// Resolve all classes in signature, return 'true' if successful

static bool load_signature_classes(methodHandle m, TRAPS);

// Return if true if not all classes references in signature, including return type, has been loaded

static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS);

// Printing

void print_short_name(outputStream* st = tty); // prints as klassname::methodname; Exposed so field engineers can debug VM

void print_name(outputStream* st = tty); // prints as "virtual void foo(int)"; exposed for TraceRedefineClasses

// Helper routine used for method sorting

static void sort_methods(objArrayOop methods,

objArrayOop methods_annotations,

objArrayOop methods_parameter_annotations,

objArrayOop methods_default_annotations,

bool idempotent = false);

// size of parameters

void set_size_of_parameters(int size) { _size_of_parameters = size; }

private:

// Inlined elements

address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); }

address* signature_handler_addr() const { return native_function_addr() + 1; }

// Garbage collection support

oop* adr_constMethod() const { return (oop*)&_constMethod; }

oop* adr_method_data() const { return (oop*)&_method_data; }

};

class CompressedLineNumberWriteStream: public CompressedWriteStream {

private:

int _bci;

int _line;

public:

// Constructor

CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {}

CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {}

// Write (bci, line number) pair to stream

void write_pair_regular(int bci_delta, int line_delta);

inline void write_pair_inline(int bci, int line) {

int bci_delta = bci - _bci;

int line_delta = line - _line;

_bci = bci;

_line = line;

// Skip (0,0) deltas - they do not add information and conflict with terminator.

if (bci_delta == 0 && line_delta == 0) return;

// Check if bci is 5-bit and line number 3-bit unsigned.

if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) {

// Compress into single byte.

jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta;

// Check that value doesn't match escape character.

if (value != 0xFF) {

write_byte(value);

return;

}

}

write_pair_regular(bci_delta, line_delta);

}

#if defined(_M_AMD64) && _MSC_VER >= 1400

void write_pair(int bci, int line);

#else

void write_pair(int bci, int line) { write_pair_inline(bci, line); }

#endif

// Write end-of-stream marker

void write_terminator() { write_byte(0); }

};

class CompressedLineNumberReadStream: public CompressedReadStream {

private:

int _bci;

int _line;

public:

// Constructor

CompressedLineNumberReadStream(u_char* buffer);

// Read (bci, line number) pair from stream. Returns false at end-of-stream.

bool read_pair();

// Accessing bci and line number (after calling read_pair)

int bci() const { return _bci; }

int line() const { return _line; }

};

class BreakpointInfo : public CHeapObj<mtClass> {

friend class VMStructs;

private:

Bytecodes::Code _orig_bytecode;

int _bci;

u2 _name_index; // of method

u2 _signature_index; // of method

BreakpointInfo* _next; // simple storage allocation

public:

BreakpointInfo(methodOop m, int bci);

// accessors

Bytecodes::Code orig_bytecode() { return _orig_bytecode; }

void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; }

int bci() { return _bci; }

BreakpointInfo* next() const { return _next; }

void set_next(BreakpointInfo* n) { _next = n; }

// helps for searchers

bool match(const methodOopDesc* m, int bci) {

return bci == _bci && match(m);

}

bool match(const methodOopDesc* m) {

return _name_index == m->name_index() &&

_signature_index == m->signature_index();

}

void set(methodOop method);

void clear(methodOop method);

};

class ExceptionTable : public StackObj {

private:

ExceptionTableElement* _table;

u2 _length;

public:

ExceptionTable(methodOop m) {

if (m->has_exception_handler()) {

_table = m->exception_table_start();

_length = m->exception_table_length();

} else {

_table = NULL;

_length = 0;

}

}

int length() const {

return _length;

}

u2 start_pc(int idx) const {

assert(idx < _length, "out of bounds");

return _table[idx].start_pc;

}

void set_start_pc(int idx, u2 value) {

assert(idx < _length, "out of bounds");

_table[idx].start_pc = value;

}

u2 end_pc(int idx) const {

assert(idx < _length, "out of bounds");

return _table[idx].end_pc;

}

void set_end_pc(int idx, u2 value) {

assert(idx < _length, "out of bounds");

_table[idx].end_pc = value;

}

u2 handler_pc(int idx) const {

assert(idx < _length, "out of bounds");

return _table[idx].handler_pc;

}

void set_handler_pc(int idx, u2 value) {

assert(idx < _length, "out of bounds");

_table[idx].handler_pc = value;

}

u2 catch_type_index(int idx) const {

assert(idx < _length, "out of bounds");

return _table[idx].catch_type_index;

}

void set_catch_type_index(int idx, u2 value) {

assert(idx < _length, "out of bounds");

_table[idx].catch_type_index = value;

}

};

#endif // SHARE_VM_OOPS_METHODOOP_HPP