Mercurial > hg > truffle
diff src/share/vm/ci/ciMethodData.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 48a3fa21394b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/ci/ciMethodData.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,287 @@ +/* + * Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +class ciBitData; +class ciCounterData; +class ciJumpData; +class ciReceiverTypeData; +class ciRetData; +class ciBranchData; +class ciArrayData; +class ciMultiBranchData; + +typedef ProfileData ciProfileData; + +class ciBitData : public BitData { +public: + ciBitData(DataLayout* layout) : BitData(layout) {}; +}; + +class ciCounterData : public CounterData { +public: + ciCounterData(DataLayout* layout) : CounterData(layout) {}; +}; + +class ciJumpData : public JumpData { +public: + ciJumpData(DataLayout* layout) : JumpData(layout) {}; +}; + +class ciReceiverTypeData : public ReceiverTypeData { +public: + ciReceiverTypeData(DataLayout* layout) : ReceiverTypeData(layout) {}; + + void set_receiver(uint row, ciKlass* recv) { + assert((uint)row < row_limit(), "oob"); + set_intptr_at(receiver0_offset + row * receiver_type_row_cell_count, + (intptr_t) recv); + } + + ciKlass* receiver(uint row) { + assert((uint)row < row_limit(), "oob"); + ciObject* recv = (ciObject*)intptr_at(receiver0_offset + row * receiver_type_row_cell_count); + assert(recv == NULL || recv->is_klass(), "wrong type"); + return (ciKlass*)recv; + } + + // Copy & translate from oop based ReceiverTypeData + virtual void translate_from(ProfileData* data) { + translate_receiver_data_from(data); + } + void translate_receiver_data_from(ProfileData* data); +#ifndef PRODUCT + void print_data_on(outputStream* st); + void print_receiver_data_on(outputStream* st); +#endif +}; + +class ciVirtualCallData : public VirtualCallData { + // Fake multiple inheritance... It's a ciReceiverTypeData also. + ciReceiverTypeData* rtd_super() { return (ciReceiverTypeData*) this; } + +public: + ciVirtualCallData(DataLayout* layout) : VirtualCallData(layout) {}; + + void set_receiver(uint row, ciKlass* recv) { + rtd_super()->set_receiver(row, recv); + } + + ciKlass* receiver(uint row) { + return rtd_super()->receiver(row); + } + + // Copy & translate from oop based VirtualCallData + virtual void translate_from(ProfileData* data) { + rtd_super()->translate_receiver_data_from(data); + } +#ifndef PRODUCT + void print_data_on(outputStream* st); +#endif +}; + + +class ciRetData : public RetData { +public: + ciRetData(DataLayout* layout) : RetData(layout) {}; +}; + +class ciBranchData : public BranchData { +public: + ciBranchData(DataLayout* layout) : BranchData(layout) {}; +}; + +class ciArrayData : public ArrayData { +public: + ciArrayData(DataLayout* layout) : ArrayData(layout) {}; +}; + +class ciMultiBranchData : public MultiBranchData { +public: + ciMultiBranchData(DataLayout* layout) : MultiBranchData(layout) {}; +}; + +// ciMethodData +// +// This class represents a methodDataOop in the HotSpot virtual +// machine. + +class ciMethodData : public ciObject { + CI_PACKAGE_ACCESS + +private: + // Size in bytes + int _data_size; + int _extra_data_size; + + // Data entries + intptr_t* _data; + + // Cached hint for data_before() + int _hint_di; + + // Is data attached? And is it mature? + enum { empty_state, immature_state, mature_state }; + u_char _state; + + // Set this true if empty extra_data slots are ever witnessed. + u_char _saw_free_extra_data; + + // Support for interprocedural escape analysis + intx _eflags; // flags on escape information + intx _arg_local; // bit set of non-escaping arguments + intx _arg_stack; // bit set of stack-allocatable arguments + intx _arg_returned; // bit set of returned arguments + + // Maturity of the oop when the snapshot is taken. + int _current_mileage; + + // Coherent snapshot of original header. + methodDataOopDesc _orig; + + ciMethodData(methodDataHandle h_md); + ciMethodData(); + + // Accessors + int data_size() { return _data_size; } + int extra_data_size() { return _extra_data_size; } + intptr_t * data() { return _data; } + + methodDataOop get_methodDataOop() const { + if (handle() == NULL) return NULL; + methodDataOop mdo = (methodDataOop)get_oop(); + assert(mdo != NULL, "illegal use of unloaded method data"); + return mdo; + } + + const char* type_string() { return "ciMethodData"; } + + void print_impl(outputStream* st); + + DataLayout* data_layout_at(int data_index) { + assert(data_index % sizeof(intptr_t) == 0, "unaligned"); + return (DataLayout*) (((address)_data) + data_index); + } + + bool out_of_bounds(int data_index) { + return data_index >= data_size(); + } + + // hint accessors + int hint_di() const { return _hint_di; } + void set_hint_di(int di) { + assert(!out_of_bounds(di), "hint_di out of bounds"); + _hint_di = di; + } + ciProfileData* data_before(int bci) { + // avoid SEGV on this edge case + if (data_size() == 0) + return NULL; + int hint = hint_di(); + if (data_layout_at(hint)->bci() <= bci) + return data_at(hint); + return first_data(); + } + + + // What is the index of the first data entry? + int first_di() { return 0; } + +public: + bool is_method_data() { return true; } + bool is_empty() { return _state == empty_state; } + bool is_mature() { return _state == mature_state; } + + int creation_mileage() { return _orig.creation_mileage(); } + int current_mileage() { return _current_mileage; } + + void load_data(); + + // Convert a dp (data pointer) to a di (data index). + int dp_to_di(address dp) { + return dp - ((address)_data); + } + + // Get the data at an arbitrary (sort of) data index. + ciProfileData* data_at(int data_index); + + // Walk through the data in order. + ciProfileData* first_data() { return data_at(first_di()); } + ciProfileData* next_data(ciProfileData* current); + bool is_valid(ciProfileData* current) { return current != NULL; } + + // Get the data at an arbitrary bci, or NULL if there is none. + ciProfileData* bci_to_data(int bci); + ciProfileData* bci_to_extra_data(int bci, bool create_if_missing); + + uint overflow_trap_count() const { + return _orig.overflow_trap_count(); + } + uint overflow_recompile_count() const { + return _orig.overflow_recompile_count(); + } + uint decompile_count() const { + return _orig.decompile_count(); + } + uint trap_count(int reason) const { + return _orig.trap_count(reason); + } + uint trap_reason_limit() const { return _orig.trap_reason_limit(); } + uint trap_count_limit() const { return _orig.trap_count_limit(); } + + // Helpful query functions that decode trap_state. + int has_trap_at(ciProfileData* data, int reason); + int has_trap_at(int bci, int reason) { + return has_trap_at(bci_to_data(bci), reason); + } + int trap_recompiled_at(ciProfileData* data); + int trap_recompiled_at(int bci) { + return trap_recompiled_at(bci_to_data(bci)); + } + + void clear_escape_info(); + bool has_escape_info(); + void update_escape_info(); + + void set_eflag(methodDataOopDesc::EscapeFlag f); + void clear_eflag(methodDataOopDesc::EscapeFlag f); + bool eflag_set(methodDataOopDesc::EscapeFlag f) const; + + void set_arg_local(int i); + void set_arg_stack(int i); + void set_arg_returned(int i); + + bool is_arg_local(int i) const; + bool is_arg_stack(int i) const; + bool is_arg_returned(int i) const; + + // Code generation helper + ByteSize offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data); + int byte_offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { return in_bytes(offset_of_slot(data, slot_offset_in_data)); } + +#ifndef PRODUCT + // printing support for method data + void print(); + void print_data_on(outputStream* st); +#endif +};