truffle: src/share/vm/oops/methodData.hpp comparison

comparison src/share/vm/oops/methodData.hpp @ 14422:2b8e28fdf503

Merge

author	kvn
date	Tue, 05 Nov 2013 17:38:04 -0800
parents	abe03600372a 5ccbab1c69f3
children	018b357638aa

comparison

equal deleted inserted replaced

-:3068270ba476
+:2b8e28fdf503
 // DataLayout
 //
 // Overlay for generic profiling data.
 class DataLayout VALUE_OBJ_CLASS_SPEC {
+friend class VMStructs;
 private:
 // Every data layout begins with a header.  This header
 // contains a tag, which is used to indicate the size/layout
 // of the data, 4 bits of flags, which can be used in any way,
 // 4 bits of trap history (none/one reason/many reasons),
 receiver_type_data_tag,
 virtual_call_data_tag,
 ret_data_tag,
 branch_data_tag,
 multi_branch_data_tag,
-arg_info_data_tag
+arg_info_data_tag,
+call_type_data_tag,
+virtual_call_type_data_tag,
+parameters_type_data_tag
 };
 enum {
 // The _struct._flags word is formatted as [trap_state:4 | flags:4].
 // The trap state breaks down further as [recompile:1 | reason:3].
 // The associated trap histogram in the MDO itself tells whether
 // traps are common or not.  If a BCI shows that a trap X has
 // occurred, and the MDO shows N occurrences of X, we make the
 // simplifying assumption that all N occurrences can be blamed
 // on that BCI.
-int trap_state() {
+int trap_state() const {
 return ((_header._struct._flags >> trap_shift) & trap_mask);
 }
 void set_trap_state(int new_state) {
 assert(ProfileTraps, "used only under +ProfileTraps");
 uint old_flags = (_header._struct._flags & flag_mask);
 _header._struct._flags = (new_state << trap_shift) | old_flags;
 }
-u1 flags() {
+u1 flags() const {
 return _header._struct._flags;
 }
-u2 bci() {
+u2 bci() const {
 return _header._struct._bci;
 }
 void set_header(intptr_t value) {
 _header._bits = value;
 _cells[index] = value;
 }
 void release_set_cell_at(int index, intptr_t value) {
 OrderAccess::release_store_ptr(&_cells[index], value);
 }
-intptr_t cell_at(int index) {
+intptr_t cell_at(int index) const {
 return _cells[index];
 }
 void set_flag_at(int flag_number) {
 assert(flag_number < flag_limit, "oob");
 _header._struct._flags |= (0x1 << flag_number);
 }
-bool flag_at(int flag_number) {
+bool flag_at(int flag_number) const {
 assert(flag_number < flag_limit, "oob");
 return (_header._struct._flags & (0x1 << flag_number)) != 0;
 }
 // Low-level support for code generation.
 class ProfileData;
 class   BitData;
 class     CounterData;
 class       ReceiverTypeData;
 class         VirtualCallData;
+class           VirtualCallTypeData;
 class       RetData;
+class       CallTypeData;
 class   JumpData;
 class     BranchData;
 class   ArrayData;
 class     MultiBranchData;
 class     ArgInfoData;
+class     ParametersTypeData;
 // ProfileData
 //
 // A ProfileData object is created to refer to a section of profiling
 // data in a structured way.
 class ProfileData : public ResourceObj {
+friend class TypeEntries;
+friend class ReturnTypeEntry;
+friend class TypeStackSlotEntries;
 private:
 #ifndef PRODUCT
 enum {
 tab_width_one = 16,
 tab_width_two = 36
 // This is a pointer to a section of profiling data.
 DataLayout* _data;
 protected:
 DataLayout* data() { return _data; }
+const DataLayout* data() const { return _data; }
 enum {
 cell_size = DataLayout::cell_size
 };
 public:
 // How many cells are in this?
-virtual int cell_count() {
+virtual int cell_count() const {
 ShouldNotReachHere();
 return -1;
 }
 // Return the size of this data.
 }
 void release_set_intptr_at(int index, intptr_t value) {
 assert(0 <= index && index < cell_count(), "oob");
 data()->release_set_cell_at(index, value);
 }
-intptr_t intptr_at(int index) {
+intptr_t intptr_at(int index) const {
 assert(0 <= index && index < cell_count(), "oob");
 return data()->cell_at(index);
 }
 void set_uint_at(int index, uint value) {
 set_intptr_at(index, (intptr_t) value);
 }
 void release_set_uint_at(int index, uint value) {
 release_set_intptr_at(index, (intptr_t) value);
 }
-uint uint_at(int index) {
+uint uint_at(int index) const {
 return (uint)intptr_at(index);
 }
 void set_int_at(int index, int value) {
 set_intptr_at(index, (intptr_t) value);
 }
 void release_set_int_at(int index, int value) {
 release_set_intptr_at(index, (intptr_t) value);
 }
-int int_at(int index) {
+int int_at(int index) const {
 return (int)intptr_at(index);
 }
-int int_at_unchecked(int index) {
+int int_at_unchecked(int index) const {
 return (int)data()->cell_at(index);
 }
 void set_oop_at(int index, oop value) {
-set_intptr_at(index, (intptr_t) value);
+set_intptr_at(index, cast_from_oop<intptr_t>(value));
 }
-oop oop_at(int index) {
+oop oop_at(int index) const {
-return (oop)intptr_at(index);
+return cast_to_oop(intptr_at(index));
 }
 void set_flag_at(int flag_number) {
 data()->set_flag_at(flag_number);
 }
-bool flag_at(int flag_number) {
+bool flag_at(int flag_number) const {
 return data()->flag_at(flag_number);
 }
 // two convenient imports for use by subclasses:
 static ByteSize cell_offset(int index) {
 public:
 // Constructor for invalid ProfileData.
 ProfileData();
-u2 bci() {
+u2 bci() const {
 return data()->bci();
 }
 address dp() {
 return (address)_data;
 }
-int trap_state() {
+int trap_state() const {
 return data()->trap_state();
 }
 void set_trap_state(int new_state) {
 data()->set_trap_state(new_state);
 }
 // Type checking
-virtual bool is_BitData()         { return false; }
+virtual bool is_BitData()         const { return false; }
-virtual bool is_CounterData()     { return false; }
+virtual bool is_CounterData()     const { return false; }
-virtual bool is_JumpData()        { return false; }
+virtual bool is_JumpData()        const { return false; }
-virtual bool is_ReceiverTypeData(){ return false; }
+virtual bool is_ReceiverTypeData()const { return false; }
-virtual bool is_VirtualCallData() { return false; }
+virtual bool is_VirtualCallData() const { return false; }
-virtual bool is_RetData()         { return false; }
+virtual bool is_RetData()         const { return false; }
-virtual bool is_BranchData()      { return false; }
+virtual bool is_BranchData()      const { return false; }
-virtual bool is_ArrayData()       { return false; }
+virtual bool is_ArrayData()       const { return false; }
-virtual bool is_MultiBranchData() { return false; }
+virtual bool is_MultiBranchData() const { return false; }
-virtual bool is_ArgInfoData()     { return false; }
+virtual bool is_ArgInfoData()     const { return false; }
+virtual bool is_CallTypeData()    const { return false; }
+virtual bool is_VirtualCallTypeData()const { return false; }
-BitData* as_BitData() {
+virtual bool is_ParametersTypeData() const { return false; }
+BitData* as_BitData() const {
 assert(is_BitData(), "wrong type");
 return is_BitData()         ? (BitData*)        this : NULL;
 }
-CounterData* as_CounterData() {
+CounterData* as_CounterData() const {
 assert(is_CounterData(), "wrong type");
 return is_CounterData()     ? (CounterData*)    this : NULL;
 }
-JumpData* as_JumpData() {
+JumpData* as_JumpData() const {
 assert(is_JumpData(), "wrong type");
 return is_JumpData()        ? (JumpData*)       this : NULL;
 }
-ReceiverTypeData* as_ReceiverTypeData() {
+ReceiverTypeData* as_ReceiverTypeData() const {
 assert(is_ReceiverTypeData(), "wrong type");
 return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL;
 }
-VirtualCallData* as_VirtualCallData() {
+VirtualCallData* as_VirtualCallData() const {
 assert(is_VirtualCallData(), "wrong type");
 return is_VirtualCallData() ? (VirtualCallData*)this : NULL;
 }
-RetData* as_RetData() {
+RetData* as_RetData() const {
 assert(is_RetData(), "wrong type");
 return is_RetData()         ? (RetData*)        this : NULL;
 }
-BranchData* as_BranchData() {
+BranchData* as_BranchData() const {
 assert(is_BranchData(), "wrong type");
 return is_BranchData()      ? (BranchData*)     this : NULL;
 }
-ArrayData* as_ArrayData() {
+ArrayData* as_ArrayData() const {
 assert(is_ArrayData(), "wrong type");
 return is_ArrayData()       ? (ArrayData*)      this : NULL;
 }
-MultiBranchData* as_MultiBranchData() {
+MultiBranchData* as_MultiBranchData() const {
 assert(is_MultiBranchData(), "wrong type");
 return is_MultiBranchData() ? (MultiBranchData*)this : NULL;
 }
-ArgInfoData* as_ArgInfoData() {
+ArgInfoData* as_ArgInfoData() const {
 assert(is_ArgInfoData(), "wrong type");
 return is_ArgInfoData() ? (ArgInfoData*)this : NULL;
+}
+CallTypeData* as_CallTypeData() const {
+assert(is_CallTypeData(), "wrong type");
+return is_CallTypeData() ? (CallTypeData*)this : NULL;
+}
+VirtualCallTypeData* as_VirtualCallTypeData() const {
+assert(is_VirtualCallTypeData(), "wrong type");
+return is_VirtualCallTypeData() ? (VirtualCallTypeData*)this : NULL;
+}
+ParametersTypeData* as_ParametersTypeData() const {
+assert(is_ParametersTypeData(), "wrong type");
+return is_ParametersTypeData() ? (ParametersTypeData*)this : NULL;
 }
 // Subclass specific initialization
 virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {}
 // CI translation: ProfileData can represent both MethodDataOop data
 // as well as CIMethodData data. This function is provided for translating
 // an oop in a ProfileData to the ci equivalent. Generally speaking,
 // most ProfileData don't require any translation, so we provide the null
 // translation here, and the required translators are in the ci subclasses.
-virtual void translate_from(ProfileData* data) {}
+virtual void translate_from(const ProfileData* data) {}
-virtual void print_data_on(outputStream* st) {
+virtual void print_data_on(outputStream* st) const {
 ShouldNotReachHere();
 }
 #ifndef PRODUCT
-void print_shared(outputStream* st, const char* name);
+void print_shared(outputStream* st, const char* name) const;
-void tab(outputStream* st);
+void tab(outputStream* st, bool first = false) const;
 #endif
 };
 // BitData
 //
 enum { bit_cell_count = 0 };  // no additional data fields needed.
 public:
 BitData(DataLayout* layout) : ProfileData(layout) {
 }
-virtual bool is_BitData() { return true; }
+virtual bool is_BitData() const { return true; }
 static int static_cell_count() {
 return bit_cell_count;
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return static_cell_count();
 }
 // Accessor
 return (DataLayout*) (((address)layout) + (ssize_t)BitData::bit_data_size_in_bytes());
 }
 #endif // CC_INTERP
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
 #endif
 };
 // CounterData
 //
 counter_cell_count
 };
 public:
 CounterData(DataLayout* layout) : BitData(layout) {}
-virtual bool is_CounterData() { return true; }
+virtual bool is_CounterData() const { return true; }
 static int static_cell_count() {
 return counter_cell_count;
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return static_cell_count();
 }
 // Direct accessor
-uint count() {
+uint count() const {
 return uint_at(count_off);
 }
 // Code generation support
 static ByteSize count_offset() {
 return (DataLayout*) (((address)layout) + (ssize_t)CounterData::counter_data_size_in_bytes());
 }
 #endif // CC_INTERP
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
 #endif
 };
 // JumpData
 //
 JumpData(DataLayout* layout) : ProfileData(layout) {
 assert(layout->tag() == DataLayout::jump_data_tag ||
 layout->tag() == DataLayout::branch_data_tag, "wrong type");
 }
-virtual bool is_JumpData() { return true; }
+virtual bool is_JumpData() const { return true; }
 static int static_cell_count() {
 return jump_cell_count;
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return static_cell_count();
 }
 // Direct accessor
-uint taken() {
+uint taken() const {
 return uint_at(taken_off_set);
 }
 void set_taken(uint cnt) {
 set_uint_at(taken_off_set, cnt);
 if (cnt == 0) cnt--;
 set_uint_at(taken_off_set, cnt);
 return cnt;
 }
-int displacement() {
+int displacement() const {
 return int_at(displacement_off_set);
 }
 // Code generation support
 static ByteSize taken_offset() {
 // Specific initialization.
 void post_initialize(BytecodeStream* stream, MethodData* mdo);
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
+#endif
+};
+// Entries in a ProfileData object to record types: it can either be
+// none (no profile), unknown (conflicting profile data) or a klass if
+// a single one is seen. Whether a null reference was seen is also
+// recorded. No counter is associated with the type and a single type
+// is tracked (unlike VirtualCallData).
+class TypeEntries {
+public:
+// A single cell is used to record information for a type:
+// - the cell is initialized to 0
+// - when a type is discovered it is stored in the cell
+// - bit zero of the cell is used to record whether a null reference
+// was encountered or not
+// - bit 1 is set to record a conflict in the type information
+enum {
+null_seen = 1,
+type_mask = ~null_seen,
+type_unknown = 2,
+status_bits = null_seen | type_unknown,
+type_klass_mask = ~status_bits
+};
+// what to initialize a cell to
+static intptr_t type_none() {
+return 0;
+}
+// null seen = bit 0 set?
+static bool was_null_seen(intptr_t v) {
+return (v & null_seen) != 0;
+}
+// conflicting type information = bit 1 set?
+static bool is_type_unknown(intptr_t v) {
+return (v & type_unknown) != 0;
+}
+// not type information yet = all bits cleared, ignoring bit 0?
+static bool is_type_none(intptr_t v) {
+return (v & type_mask) == 0;
+}
+// recorded type: cell without bit 0 and 1
+static intptr_t klass_part(intptr_t v) {
+intptr_t r = v & type_klass_mask;
+assert (r != 0, "invalid");
+return r;
+}
+// type recorded
+static Klass* valid_klass(intptr_t k) {
+if (!is_type_none(k) &&
+!is_type_unknown(k)) {
+return (Klass*)klass_part(k);
+} else {
+return NULL;
+}
+}
+static intptr_t with_status(intptr_t k, intptr_t in) {
+return k | (in & status_bits);
+}
+static intptr_t with_status(Klass* k, intptr_t in) {
+return with_status((intptr_t)k, in);
+}
+#ifndef PRODUCT
+static void print_klass(outputStream* st, intptr_t k);
+#endif
+// GC support
+static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p);
+protected:
+// ProfileData object these entries are part of
+ProfileData* _pd;
+// offset within the ProfileData object where the entries start
+const int _base_off;
+TypeEntries(int base_off)
+: _base_off(base_off), _pd(NULL) {}
+void set_intptr_at(int index, intptr_t value) {
+_pd->set_intptr_at(index, value);
+}
+intptr_t intptr_at(int index) const {
+return _pd->intptr_at(index);
+}
+public:
+void set_profile_data(ProfileData* pd) {
+_pd = pd;
+}
+};
+// Type entries used for arguments passed at a call and parameters on
+// method entry. 2 cells per entry: one for the type encoded as in
+// TypeEntries and one initialized with the stack slot where the
+// profiled object is to be found so that the interpreter can locate
+// it quickly.
+class TypeStackSlotEntries : public TypeEntries {
+private:
+enum {
+stack_slot_entry,
+type_entry,
+per_arg_cell_count
+};
+// offset of cell for stack slot for entry i within ProfileData object
+int stack_slot_offset(int i) const {
+return _base_off + stack_slot_local_offset(i);
+}
+protected:
+const int _number_of_entries;
+// offset of cell for type for entry i within ProfileData object
+int type_offset(int i) const {
+return _base_off + type_local_offset(i);
+}
+public:
+TypeStackSlotEntries(int base_off, int nb_entries)
+: TypeEntries(base_off), _number_of_entries(nb_entries) {}
+static int compute_cell_count(Symbol* signature, bool include_receiver, int max);
+void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver);
+// offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries
+static int stack_slot_local_offset(int i) {
+return i * per_arg_cell_count + stack_slot_entry;
+}
+// offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries
+static int type_local_offset(int i) {
+return i * per_arg_cell_count + type_entry;
+}
+// stack slot for entry i
+uint stack_slot(int i) const {
+assert(i >= 0 && i < _number_of_entries, "oob");
+return _pd->uint_at(stack_slot_offset(i));
+}
+// set stack slot for entry i
+void set_stack_slot(int i, uint num) {
+assert(i >= 0 && i < _number_of_entries, "oob");
+_pd->set_uint_at(stack_slot_offset(i), num);
+}
+// type for entry i
+intptr_t type(int i) const {
+assert(i >= 0 && i < _number_of_entries, "oob");
+return _pd->intptr_at(type_offset(i));
+}
+// set type for entry i
+void set_type(int i, intptr_t k) {
+assert(i >= 0 && i < _number_of_entries, "oob");
+_pd->set_intptr_at(type_offset(i), k);
+}
+static ByteSize per_arg_size() {
+return in_ByteSize(per_arg_cell_count * DataLayout::cell_size);
+}
+static int per_arg_count() {
+return per_arg_cell_count ;
+}
+// GC support
+void clean_weak_klass_links(BoolObjectClosure* is_alive_closure);
+#ifndef PRODUCT
+void print_data_on(outputStream* st) const;
+#endif
+};
+// Type entry used for return from a call. A single cell to record the
+// type.
+class ReturnTypeEntry : public TypeEntries {
+private:
+enum {
+cell_count = 1
+};
+public:
+ReturnTypeEntry(int base_off)
+: TypeEntries(base_off) {}
+void post_initialize() {
+set_type(type_none());
+}
+intptr_t type() const {
+return _pd->intptr_at(_base_off);
+}
+void set_type(intptr_t k) {
+_pd->set_intptr_at(_base_off, k);
+}
+static int static_cell_count() {
+return cell_count;
+}
+static ByteSize size() {
+return in_ByteSize(cell_count * DataLayout::cell_size);
+}
+ByteSize type_offset() {
+return DataLayout::cell_offset(_base_off);
+}
+// GC support
+void clean_weak_klass_links(BoolObjectClosure* is_alive_closure);
+#ifndef PRODUCT
+void print_data_on(outputStream* st) const;
+#endif
+};
+// Entries to collect type information at a call: contains arguments
+// (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a
+// number of cells. Because the number of cells for the return type is
+// smaller than the number of cells for the type of an arguments, the
+// number of cells is used to tell how many arguments are profiled and
+// whether a return value is profiled. See has_arguments() and
+// has_return().
+class TypeEntriesAtCall {
+private:
+static int stack_slot_local_offset(int i) {
+return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i);
+}
+static int argument_type_local_offset(int i) {
+return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);;
+}
+public:
+static int header_cell_count() {
+return 1;
+}
+static int cell_count_local_offset() {
+return 0;
+}
+static int compute_cell_count(BytecodeStream* stream);
+static void initialize(DataLayout* dl, int base, int cell_count) {
+int off = base + cell_count_local_offset();
+dl->set_cell_at(off, cell_count - base - header_cell_count());
+}
+static bool arguments_profiling_enabled();
+static bool return_profiling_enabled();
+// Code generation support
+static ByteSize cell_count_offset() {
+return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size);
+}
+static ByteSize args_data_offset() {
+return in_ByteSize(header_cell_count() * DataLayout::cell_size);
+}
+static ByteSize stack_slot_offset(int i) {
+return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size);
+}
+static ByteSize argument_type_offset(int i) {
+return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size);
+}
+};
+// CallTypeData
+//
+// A CallTypeData is used to access profiling information about a non
+// virtual call for which we collect type information about arguments
+// and return value.
+class CallTypeData : public CounterData {
+private:
+// entries for arguments if any
+TypeStackSlotEntries _args;
+// entry for return type if any
+ReturnTypeEntry _ret;
+int cell_count_global_offset() const {
+return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset();
+}
+// number of cells not counting the header
+int cell_count_no_header() const {
+return uint_at(cell_count_global_offset());
+}
+void check_number_of_arguments(int total) {
+assert(number_of_arguments() == total, "should be set in DataLayout::initialize");
+}
+public:
+CallTypeData(DataLayout* layout) :
+CounterData(layout),
+_args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()),
+_ret(cell_count() - ReturnTypeEntry::static_cell_count())
+{
+assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type");
+// Some compilers (VC++) don't want this passed in member initialization list
+_args.set_profile_data(this);
+_ret.set_profile_data(this);
+}
+const TypeStackSlotEntries* args() const {
+assert(has_arguments(), "no profiling of arguments");
+return &_args;
+}
+const ReturnTypeEntry* ret() const {
+assert(has_return(), "no profiling of return value");
+return &_ret;
+}
+virtual bool is_CallTypeData() const { return true; }
+static int static_cell_count() {
+return -1;
+}
+static int compute_cell_count(BytecodeStream* stream) {
+return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream);
+}
+static void initialize(DataLayout* dl, int cell_count) {
+TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count);
+}
+virtual void post_initialize(BytecodeStream* stream, MethodData* mdo);
+virtual int cell_count() const {
+return CounterData::static_cell_count() +
+TypeEntriesAtCall::header_cell_count() +
+int_at_unchecked(cell_count_global_offset());
+}
+int number_of_arguments() const {
+return cell_count_no_header() / TypeStackSlotEntries::per_arg_count();
+}
+void set_argument_type(int i, Klass* k) {
+assert(has_arguments(), "no arguments!");
+intptr_t current = _args.type(i);
+_args.set_type(i, TypeEntries::with_status(k, current));
+}
+void set_return_type(Klass* k) {
+assert(has_return(), "no return!");
+intptr_t current = _ret.type();
+_ret.set_type(TypeEntries::with_status(k, current));
+}
+// An entry for a return value takes less space than an entry for an
+// argument so if the number of cells exceeds the number of cells
+// needed for an argument, this object contains type information for
+// at least one argument.
+bool has_arguments() const {
+bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count();
+assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments");
+return res;
+}
+// An entry for a return value takes less space than an entry for an
+// argument, so if the remainder of the number of cells divided by
+// the number of cells for an argument is not null, a return value
+// is profiled in this object.
+bool has_return() const {
+bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0;
+assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values");
+return res;
+}
+// Code generation support
+static ByteSize args_data_offset() {
+return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset();
+}
+// GC support
+virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {
+if (has_arguments()) {
+_args.clean_weak_klass_links(is_alive_closure);
+}
+if (has_return()) {
+_ret.clean_weak_klass_links(is_alive_closure);
+}
+}
+#ifndef PRODUCT
+virtual void print_data_on(outputStream* st) const;
 #endif
 };
 // ReceiverTypeData
 //
 };
 public:
 ReceiverTypeData(DataLayout* layout) : CounterData(layout) {
 assert(layout->tag() == DataLayout::receiver_type_data_tag ||
-layout->tag() == DataLayout::virtual_call_data_tag, "wrong type");
+layout->tag() == DataLayout::virtual_call_data_tag ||
-}
+layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type");
+}
-virtual bool is_ReceiverTypeData() { return true; }
+virtual bool is_ReceiverTypeData() const { return true; }
 static int static_cell_count() {
 return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count;
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return static_cell_count();
 }
 // Direct accessors
 static uint row_limit() {
 }
 static int receiver_count_cell_index(uint row) {
 return count0_offset + row * receiver_type_row_cell_count;
 }
-Klass* receiver(uint row) {
+Klass* receiver(uint row) const {
 assert(row < row_limit(), "oob");
 Klass* recv = (Klass*)intptr_at(receiver_cell_index(row));
 assert(recv == NULL || recv->is_klass(), "wrong type");
 return recv;
 void set_receiver(uint row, Klass* k) {
 assert((uint)row < row_limit(), "oob");
 set_intptr_at(receiver_cell_index(row), (uintptr_t)k);
 }
-uint receiver_count(uint row) {
+uint receiver_count(uint row) const {
 assert(row < row_limit(), "oob");
 return uint_at(receiver_count_cell_index(row));
 }
 void set_receiver_count(uint row, uint count) {
 return (DataLayout*) (((address)layout) + (ssize_t)ReceiverTypeData::receiver_type_data_size_in_bytes());
 }
 #endif // CC_INTERP
 #ifndef PRODUCT
-void print_receiver_data_on(outputStream* st);
+void print_receiver_data_on(outputStream* st) const;
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
 #endif
 };
 // VirtualCallData
 //
 // A VirtualCallData is used to access profiling information about a
 // virtual call.  For now, it has nothing more than a ReceiverTypeData.
 class VirtualCallData : public ReceiverTypeData {
 public:
 VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) {
-assert(layout->tag() == DataLayout::virtual_call_data_tag, "wrong type");
+assert(layout->tag() == DataLayout::virtual_call_data_tag ||
-}
+layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type");
+}
-virtual bool is_VirtualCallData() { return true; }
+virtual bool is_VirtualCallData() const { return true; }
 static int static_cell_count() {
 // At this point we could add more profile state, e.g., for arguments.
 // But for now it's the same size as the base record type.
 return ReceiverTypeData::static_cell_count();
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return static_cell_count();
 }
 // Direct accessors
 static ByteSize virtual_call_data_size() {
 return (DataLayout*) (((address)layout) + (ssize_t)VirtualCallData::virtual_call_data_size_in_bytes());
 }
 #endif // CC_INTERP
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
+#endif
+};
+// VirtualCallTypeData
+//
+// A VirtualCallTypeData is used to access profiling information about
+// a virtual call for which we collect type information about
+// arguments and return value.
+class VirtualCallTypeData : public VirtualCallData {
+private:
+// entries for arguments if any
+TypeStackSlotEntries _args;
+// entry for return type if any
+ReturnTypeEntry _ret;
+int cell_count_global_offset() const {
+return VirtualCallData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset();
+}
+// number of cells not counting the header
+int cell_count_no_header() const {
+return uint_at(cell_count_global_offset());
+}
+void check_number_of_arguments(int total) {
+assert(number_of_arguments() == total, "should be set in DataLayout::initialize");
+}
+public:
+VirtualCallTypeData(DataLayout* layout) :
+VirtualCallData(layout),
+_args(VirtualCallData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()),
+_ret(cell_count() - ReturnTypeEntry::static_cell_count())
+{
+assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type");
+// Some compilers (VC++) don't want this passed in member initialization list
+_args.set_profile_data(this);
+_ret.set_profile_data(this);
+}
+const TypeStackSlotEntries* args() const {
+assert(has_arguments(), "no profiling of arguments");
+return &_args;
+}
+const ReturnTypeEntry* ret() const {
+assert(has_return(), "no profiling of return value");
+return &_ret;
+}
+virtual bool is_VirtualCallTypeData() const { return true; }
+static int static_cell_count() {
+return -1;
+}
+static int compute_cell_count(BytecodeStream* stream) {
+return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream);
+}
+static void initialize(DataLayout* dl, int cell_count) {
+TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count);
+}
+virtual void post_initialize(BytecodeStream* stream, MethodData* mdo);
+virtual int cell_count() const {
+return VirtualCallData::static_cell_count() +
+TypeEntriesAtCall::header_cell_count() +
+int_at_unchecked(cell_count_global_offset());
+}
+int number_of_arguments() const {
+return cell_count_no_header() / TypeStackSlotEntries::per_arg_count();
+}
+void set_argument_type(int i, Klass* k) {
+assert(has_arguments(), "no arguments!");
+intptr_t current = _args.type(i);
+_args.set_type(i, TypeEntries::with_status(k, current));
+}
+void set_return_type(Klass* k) {
+assert(has_return(), "no return!");
+intptr_t current = _ret.type();
+_ret.set_type(TypeEntries::with_status(k, current));
+}
+// An entry for a return value takes less space than an entry for an
+// argument, so if the remainder of the number of cells divided by
+// the number of cells for an argument is not null, a return value
+// is profiled in this object.
+bool has_return() const {
+bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0;
+assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values");
+return res;
+}
+// An entry for a return value takes less space than an entry for an
+// argument so if the number of cells exceeds the number of cells
+// needed for an argument, this object contains type information for
+// at least one argument.
+bool has_arguments() const {
+bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count();
+assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments");
+return res;
+}
+// Code generation support
+static ByteSize args_data_offset() {
+return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset();
+}
+// GC support
+virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {
+ReceiverTypeData::clean_weak_klass_links(is_alive_closure);
+if (has_arguments()) {
+_args.clean_weak_klass_links(is_alive_closure);
+}
+if (has_return()) {
+_ret.clean_weak_klass_links(is_alive_closure);
+}
+}
+#ifndef PRODUCT
+virtual void print_data_on(outputStream* st) const;
 #endif
 };
 // RetData
 //
 public:
 RetData(DataLayout* layout) : CounterData(layout) {
 assert(layout->tag() == DataLayout::ret_data_tag, "wrong type");
 }
-virtual bool is_RetData() { return true; }
+virtual bool is_RetData() const { return true; }
 enum {
 no_bci = -1 // value of bci when bci1/2 are not in use.
 };
 static int static_cell_count() {
 return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count;
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return static_cell_count();
 }
 static uint row_limit() {
 return BciProfileWidth;
 static int bci_displacement_cell_index(uint row) {
 return displacement0_offset + row * ret_row_cell_count;
 }
 // Direct accessors
-int bci(uint row) {
+int bci(uint row) const {
 return int_at(bci_cell_index(row));
 }
-uint bci_count(uint row) {
+uint bci_count(uint row) const {
 return uint_at(bci_count_cell_index(row));
 }
-int bci_displacement(uint row) {
+int bci_displacement(uint row) const {
 return int_at(bci_displacement_cell_index(row));
 }
 // Interpreter Runtime support
 address fixup_ret(int return_bci, MethodData* mdo);
 // Specific initialization.
 void post_initialize(BytecodeStream* stream, MethodData* mdo);
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
 #endif
 };
 // BranchData
 //
 public:
 BranchData(DataLayout* layout) : JumpData(layout) {
 assert(layout->tag() == DataLayout::branch_data_tag, "wrong type");
 }
-virtual bool is_BranchData() { return true; }
+virtual bool is_BranchData() const { return true; }
 static int static_cell_count() {
 return branch_cell_count;
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return static_cell_count();
 }
 // Direct accessor
-uint not_taken() {
+uint not_taken() const {
 return uint_at(not_taken_off_set);
 }
 void set_not_taken(uint cnt) {
 set_uint_at(not_taken_off_set, cnt);
 // Specific initialization.
 void post_initialize(BytecodeStream* stream, MethodData* mdo);
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
 #endif
 };
 // ArrayData
 //
 enum {
 array_len_off_set,
 array_start_off_set
 };
-uint array_uint_at(int index) {
+uint array_uint_at(int index) const {
 int aindex = index + array_start_off_set;
 return uint_at(aindex);
 }
-int array_int_at(int index) {
+int array_int_at(int index) const {
 int aindex = index + array_start_off_set;
 return int_at(aindex);
 }
-oop array_oop_at(int index) {
+oop array_oop_at(int index) const {
 int aindex = index + array_start_off_set;
 return oop_at(aindex);
 }
 void array_set_int_at(int index, int value) {
 int aindex = index + array_start_off_set;
 }
 public:
 ArrayData(DataLayout* layout) : ProfileData(layout) {}
-virtual bool is_ArrayData() { return true; }
+virtual bool is_ArrayData() const { return true; }
 static int static_cell_count() {
 return -1;
 }
-int array_len() {
+int array_len() const {
 return int_at_unchecked(array_len_off_set);
 }
-virtual int cell_count() {
+virtual int cell_count() const {
 return array_len() + 1;
 }
 // Code generation support
 static ByteSize array_len_offset() {
 public:
 MultiBranchData(DataLayout* layout) : ArrayData(layout) {
 assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type");
 }
-virtual bool is_MultiBranchData() { return true; }
+virtual bool is_MultiBranchData() const { return true; }
 static int compute_cell_count(BytecodeStream* stream);
-int number_of_cases() {
+int number_of_cases() const {
 int alen = array_len() - 2; // get rid of default case here.
 assert(alen % per_case_cell_count == 0, "must be even");
 return (alen / per_case_cell_count);
 }
-uint default_count() {
+uint default_count() const {
 return array_uint_at(default_count_off_set);
 }
-int default_displacement() {
+int default_displacement() const {
 return array_int_at(default_disaplacement_off_set);
 }
-uint count_at(int index) {
+uint count_at(int index) const {
 return array_uint_at(case_array_start +
 index * per_case_cell_count +
 relative_count_off_set);
 }
-int displacement_at(int index) {
+int displacement_at(int index) const {
 return array_int_at(case_array_start +
 index * per_case_cell_count +
 relative_displacement_off_set);
 }
 // Specific initialization.
 void post_initialize(BytecodeStream* stream, MethodData* mdo);
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
 #endif
 };
 class ArgInfoData : public ArrayData {
 public:
 ArgInfoData(DataLayout* layout) : ArrayData(layout) {
 assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type");
 }
-virtual bool is_ArgInfoData() { return true; }
+virtual bool is_ArgInfoData() const { return true; }
-int number_of_args() {
+int number_of_args() const {
 return array_len();
 }
-uint arg_modified(int arg) {
+uint arg_modified(int arg) const {
 return array_uint_at(arg);
 }
 void set_arg_modified(int arg, uint val) {
 array_set_int_at(arg, val);
 }
 #ifndef PRODUCT
-void print_data_on(outputStream* st);
+void print_data_on(outputStream* st) const;
 #endif
+};
+// ParametersTypeData
+//
+// A ParametersTypeData is used to access profiling information about
+// types of parameters to a method
+class ParametersTypeData : public ArrayData {
+private:
+TypeStackSlotEntries _parameters;
+static int stack_slot_local_offset(int i) {
+assert_profiling_enabled();
+return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i);
+}
+static int type_local_offset(int i) {
+assert_profiling_enabled();
+return array_start_off_set + TypeStackSlotEntries::type_local_offset(i);
+}
+static bool profiling_enabled();
+static void assert_profiling_enabled() {
+assert(profiling_enabled(), "method parameters profiling should be on");
+}
+public:
+ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) {
+assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type");
+// Some compilers (VC++) don't want this passed in member initialization list
+_parameters.set_profile_data(this);
+}
+static int compute_cell_count(Method* m);
+virtual bool is_ParametersTypeData() const { return true; }
+virtual void post_initialize(BytecodeStream* stream, MethodData* mdo);
+int number_of_parameters() const {
+return array_len() / TypeStackSlotEntries::per_arg_count();
+}
+const TypeStackSlotEntries* parameters() const { return &_parameters; }
+uint stack_slot(int i) const {
+return _parameters.stack_slot(i);
+}
+void set_type(int i, Klass* k) {
+intptr_t current = _parameters.type(i);
+_parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current));
+}
+virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {
+_parameters.clean_weak_klass_links(is_alive_closure);
+}
+#ifndef PRODUCT
+virtual void print_data_on(outputStream* st) const;
+#endif
+static ByteSize stack_slot_offset(int i) {
+return cell_offset(stack_slot_local_offset(i));
+}
+static ByteSize type_offset(int i) {
+return cell_offset(type_local_offset(i));
+}
 };
 // MethodData*
 //
 // A MethodData* holds information which has been collected about
 bool              _would_profile;
 // Size of _data array in bytes.  (Excludes header and extra_data fields.)
 int _data_size;
+// data index for the area dedicated to parameters. -1 if no
+// parameter profiling.
+int _parameters_type_data_di;
 // Beginning of the data entries
 intptr_t _data[1];
 // Helper for size computation
 static int compute_data_size(BytecodeStream* stream);
 // Find or create an extra ProfileData:
 ProfileData* bci_to_extra_data(int bci, bool create_if_missing);
 // return the argument info cell
 ArgInfoData *arg_info();
+enum {
+no_type_profile = 0,
+type_profile_jsr292 = 1,
+type_profile_all = 2
+};
+static bool profile_jsr292(methodHandle m, int bci);
+static int profile_arguments_flag();
+static bool profile_arguments_jsr292_only();
+static bool profile_all_arguments();
+static bool profile_arguments_for_invoke(methodHandle m, int bci);
+static int profile_return_flag();
+static bool profile_all_return();
+static bool profile_return_for_invoke(methodHandle m, int bci);
+static int profile_parameters_flag();
+static bool profile_parameters_jsr292_only();
+static bool profile_all_parameters();
 public:
 static int header_size() {
 return sizeof(MethodData)/wordSize;
 }
 if (decompile_count() > (uint)PerMethodRecompilationCutoff) {
 method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff");
 }
 }
+// Return pointer to area dedicated to parameters in MDO
+ParametersTypeData* parameters_type_data() const {
+return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL;
+}
+int parameters_type_data_di() const {
+assert(_parameters_type_data_di != -1, "no args type data");
+return _parameters_type_data_di;
+}
 // Support for code generation
 static ByteSize data_offset() {
 return byte_offset_of(MethodData, _data[0]);
 }
 static ByteSize invocation_counter_offset() {
 return byte_offset_of(MethodData, _invocation_counter);
 }
 static ByteSize backedge_counter_offset() {
 return byte_offset_of(MethodData, _backedge_counter);
+}
+static ByteSize parameters_type_data_di_offset() {
+return byte_offset_of(MethodData, _parameters_type_data_di);
 }
 // Deallocation support - no pointer fields to deallocate
 void deallocate_contents(ClassLoaderData* loader_data) {}
 const char* internal_name() const { return "{method data}"; }
 // verification
 void verify_on(outputStream* st);
 void verify_data_on(outputStream* st);
+static bool profile_parameters_for_method(methodHandle m);
+static bool profile_arguments();
+static bool profile_return();
+static bool profile_parameters();
+static bool profile_return_jsr292_only();
 };
 #endif // SHARE_VM_OOPS_METHODDATAOOP_HPP

Mercurial > hg > truffle

comparison src/share/vm/oops/methodData.hpp @ 14422:2b8e28fdf503