author | roland |
Tue, 22 Oct 2013 09:51:47 +0200 | |
changeset 21095 | 1a04f7b3946e |
parent 20709 | 034be898bf04 |
child 21581 | 73584c201e2d |
child 22838 | 82c7497fbad4 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_OOPS_METHODDATAOOP_HPP |
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#define SHARE_VM_OOPS_METHODDATAOOP_HPP |
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#include "interpreter/bytecodes.hpp" |
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#include "memory/universe.hpp" |
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#include "oops/method.hpp" |
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#include "oops/oop.hpp" |
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#include "runtime/orderAccess.hpp" |
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class BytecodeStream; |
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class KlassSizeStats; |
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// The MethodData object collects counts and other profile information |
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// during zeroth-tier (interpretive) and first-tier execution. |
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// The profile is used later by compilation heuristics. Some heuristics |
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// enable use of aggressive (or "heroic") optimizations. An aggressive |
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// optimization often has a down-side, a corner case that it handles |
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// poorly, but which is thought to be rare. The profile provides |
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// evidence of this rarity for a given method or even BCI. It allows |
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// the compiler to back out of the optimization at places where it |
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// has historically been a poor choice. Other heuristics try to use |
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// specific information gathered about types observed at a given site. |
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// |
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// All data in the profile is approximate. It is expected to be accurate |
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// on the whole, but the system expects occasional inaccuraces, due to |
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// counter overflow, multiprocessor races during data collection, space |
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// limitations, missing MDO blocks, etc. Bad or missing data will degrade |
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// optimization quality but will not affect correctness. Also, each MDO |
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// is marked with its birth-date ("creation_mileage") which can be used |
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// to assess the quality ("maturity") of its data. |
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// |
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// Short (<32-bit) counters are designed to overflow to a known "saturated" |
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// state. Also, certain recorded per-BCI events are given one-bit counters |
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// which overflow to a saturated state which applied to all counters at |
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// that BCI. In other words, there is a small lattice which approximates |
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// the ideal of an infinite-precision counter for each event at each BCI, |
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// and the lattice quickly "bottoms out" in a state where all counters |
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// are taken to be indefinitely large. |
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// |
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// The reader will find many data races in profile gathering code, starting |
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// with invocation counter incrementation. None of these races harm correct |
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// execution of the compiled code. |
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// forward decl |
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class ProfileData; |
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// DataLayout |
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// |
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// Overlay for generic profiling data. |
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class DataLayout VALUE_OBJ_CLASS_SPEC { |
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friend class VMStructs; |
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private: |
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// Every data layout begins with a header. This header |
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// contains a tag, which is used to indicate the size/layout |
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// of the data, 4 bits of flags, which can be used in any way, |
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// 4 bits of trap history (none/one reason/many reasons), |
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// and a bci, which is used to tie this piece of data to a |
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// specific bci in the bytecodes. |
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union { |
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intptr_t _bits; |
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struct { |
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u1 _tag; |
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u1 _flags; |
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u2 _bci; |
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} _struct; |
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} _header; |
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// The data layout has an arbitrary number of cells, each sized |
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// to accomodate a pointer or an integer. |
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intptr_t _cells[1]; |
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// Some types of data layouts need a length field. |
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static bool needs_array_len(u1 tag); |
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public: |
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enum { |
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counter_increment = 1 |
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}; |
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enum { |
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cell_size = sizeof(intptr_t) |
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}; |
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// Tag values |
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enum { |
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no_tag, |
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bit_data_tag, |
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counter_data_tag, |
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jump_data_tag, |
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receiver_type_data_tag, |
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virtual_call_data_tag, |
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ret_data_tag, |
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branch_data_tag, |
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multi_branch_data_tag, |
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arg_info_data_tag, |
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call_type_data_tag, |
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virtual_call_type_data_tag, |
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parameters_type_data_tag |
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}; |
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enum { |
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// The _struct._flags word is formatted as [trap_state:4 | flags:4]. |
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// The trap state breaks down further as [recompile:1 | reason:3]. |
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// This further breakdown is defined in deoptimization.cpp. |
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// See Deoptimization::trap_state_reason for an assert that |
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// trap_bits is big enough to hold reasons < Reason_RECORDED_LIMIT. |
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// |
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// The trap_state is collected only if ProfileTraps is true. |
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trap_bits = 1+3, // 3: enough to distinguish [0..Reason_RECORDED_LIMIT]. |
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trap_shift = BitsPerByte - trap_bits, |
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trap_mask = right_n_bits(trap_bits), |
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trap_mask_in_place = (trap_mask << trap_shift), |
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flag_limit = trap_shift, |
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flag_mask = right_n_bits(flag_limit), |
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first_flag = 0 |
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}; |
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// Size computation |
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static int header_size_in_bytes() { |
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return cell_size; |
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} |
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static int header_size_in_cells() { |
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return 1; |
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} |
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static int compute_size_in_bytes(int cell_count) { |
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return header_size_in_bytes() + cell_count * cell_size; |
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} |
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// Initialization |
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void initialize(u1 tag, u2 bci, int cell_count); |
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// Accessors |
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u1 tag() { |
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return _header._struct._tag; |
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} |
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// Return a few bits of trap state. Range is [0..trap_mask]. |
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// The state tells if traps with zero, one, or many reasons have occurred. |
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// It also tells whether zero or many recompilations have occurred. |
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// The associated trap histogram in the MDO itself tells whether |
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// traps are common or not. If a BCI shows that a trap X has |
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// occurred, and the MDO shows N occurrences of X, we make the |
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// simplifying assumption that all N occurrences can be blamed |
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// on that BCI. |
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int trap_state() const { |
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return ((_header._struct._flags >> trap_shift) & trap_mask); |
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} |
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void set_trap_state(int new_state) { |
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assert(ProfileTraps, "used only under +ProfileTraps"); |
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uint old_flags = (_header._struct._flags & flag_mask); |
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_header._struct._flags = (new_state << trap_shift) | old_flags; |
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} |
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u1 flags() const { |
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return _header._struct._flags; |
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} |
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u2 bci() const { |
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return _header._struct._bci; |
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} |
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void set_header(intptr_t value) { |
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_header._bits = value; |
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} |
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void release_set_header(intptr_t value) { |
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OrderAccess::release_store_ptr(&_header._bits, value); |
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} |
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intptr_t header() { |
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return _header._bits; |
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} |
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void set_cell_at(int index, intptr_t value) { |
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_cells[index] = value; |
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} |
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void release_set_cell_at(int index, intptr_t value) { |
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OrderAccess::release_store_ptr(&_cells[index], value); |
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} |
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intptr_t cell_at(int index) const { |
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return _cells[index]; |
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} |
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void set_flag_at(int flag_number) { |
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assert(flag_number < flag_limit, "oob"); |
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_header._struct._flags |= (0x1 << flag_number); |
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} |
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bool flag_at(int flag_number) const { |
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assert(flag_number < flag_limit, "oob"); |
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return (_header._struct._flags & (0x1 << flag_number)) != 0; |
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} |
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// Low-level support for code generation. |
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static ByteSize header_offset() { |
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return byte_offset_of(DataLayout, _header); |
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} |
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static ByteSize tag_offset() { |
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return byte_offset_of(DataLayout, _header._struct._tag); |
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} |
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static ByteSize flags_offset() { |
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return byte_offset_of(DataLayout, _header._struct._flags); |
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} |
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static ByteSize bci_offset() { |
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return byte_offset_of(DataLayout, _header._struct._bci); |
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} |
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static ByteSize cell_offset(int index) { |
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return byte_offset_of(DataLayout, _cells) + in_ByteSize(index * cell_size); |
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} |
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// Return a value which, when or-ed as a byte into _flags, sets the flag. |
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static int flag_number_to_byte_constant(int flag_number) { |
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assert(0 <= flag_number && flag_number < flag_limit, "oob"); |
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DataLayout temp; temp.set_header(0); |
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temp.set_flag_at(flag_number); |
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return temp._header._struct._flags; |
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} |
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// Return a value which, when or-ed as a word into _header, sets the flag. |
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static intptr_t flag_mask_to_header_mask(int byte_constant) { |
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DataLayout temp; temp.set_header(0); |
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temp._header._struct._flags = byte_constant; |
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return temp._header._bits; |
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} |
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ProfileData* data_in(); |
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// GC support |
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void clean_weak_klass_links(BoolObjectClosure* cl); |
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}; |
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// ProfileData class hierarchy |
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class ProfileData; |
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class BitData; |
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class CounterData; |
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class ReceiverTypeData; |
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class VirtualCallData; |
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class VirtualCallTypeData; |
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class RetData; |
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class CallTypeData; |
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class JumpData; |
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class BranchData; |
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class ArrayData; |
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class MultiBranchData; |
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class ArgInfoData; |
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class ParametersTypeData; |
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// ProfileData |
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// |
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// A ProfileData object is created to refer to a section of profiling |
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// data in a structured way. |
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class ProfileData : public ResourceObj { |
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friend class TypeEntries; |
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friend class ReturnTypeEntry; |
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friend class TypeStackSlotEntries; |
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private: |
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#ifndef PRODUCT |
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enum { |
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tab_width_one = 16, |
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tab_width_two = 36 |
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}; |
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#endif // !PRODUCT |
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// This is a pointer to a section of profiling data. |
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DataLayout* _data; |
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protected: |
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DataLayout* data() { return _data; } |
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const DataLayout* data() const { return _data; } |
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enum { |
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cell_size = DataLayout::cell_size |
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}; |
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public: |
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// How many cells are in this? |
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virtual int cell_count() const { |
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return -1; |
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} |
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// Return the size of this data. |
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int size_in_bytes() { |
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return DataLayout::compute_size_in_bytes(cell_count()); |
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} |
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308 |
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protected: |
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// Low-level accessors for underlying data |
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311 |
void set_intptr_at(int index, intptr_t value) { |
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assert(0 <= index && index < cell_count(), "oob"); |
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data()->set_cell_at(index, value); |
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} |
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void release_set_intptr_at(int index, intptr_t value) { |
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assert(0 <= index && index < cell_count(), "oob"); |
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data()->release_set_cell_at(index, value); |
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} |
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intptr_t intptr_at(int index) const { |
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assert(0 <= index && index < cell_count(), "oob"); |
321 |
return data()->cell_at(index); |
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} |
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void set_uint_at(int index, uint value) { |
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324 |
set_intptr_at(index, (intptr_t) value); |
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325 |
} |
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void release_set_uint_at(int index, uint value) { |
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release_set_intptr_at(index, (intptr_t) value); |
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} |
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uint uint_at(int index) const { |
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return (uint)intptr_at(index); |
331 |
} |
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void set_int_at(int index, int value) { |
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333 |
set_intptr_at(index, (intptr_t) value); |
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} |
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void release_set_int_at(int index, int value) { |
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release_set_intptr_at(index, (intptr_t) value); |
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} |
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int int_at(int index) const { |
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return (int)intptr_at(index); |
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} |
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int int_at_unchecked(int index) const { |
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return (int)data()->cell_at(index); |
343 |
} |
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void set_oop_at(int index, oop value) { |
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set_intptr_at(index, cast_from_oop<intptr_t>(value)); |
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} |
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oop oop_at(int index) const { |
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return cast_to_oop(intptr_at(index)); |
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} |
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void set_flag_at(int flag_number) { |
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data()->set_flag_at(flag_number); |
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} |
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|
354 |
bool flag_at(int flag_number) const { |
1 | 355 |
return data()->flag_at(flag_number); |
356 |
} |
|
357 |
||
358 |
// two convenient imports for use by subclasses: |
|
359 |
static ByteSize cell_offset(int index) { |
|
360 |
return DataLayout::cell_offset(index); |
|
361 |
} |
|
362 |
static int flag_number_to_byte_constant(int flag_number) { |
|
363 |
return DataLayout::flag_number_to_byte_constant(flag_number); |
|
364 |
} |
|
365 |
||
366 |
ProfileData(DataLayout* data) { |
|
367 |
_data = data; |
|
368 |
} |
|
369 |
||
370 |
public: |
|
371 |
// Constructor for invalid ProfileData. |
|
372 |
ProfileData(); |
|
373 |
||
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|
374 |
u2 bci() const { |
1 | 375 |
return data()->bci(); |
376 |
} |
|
377 |
||
378 |
address dp() { |
|
379 |
return (address)_data; |
|
380 |
} |
|
381 |
||
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|
382 |
int trap_state() const { |
1 | 383 |
return data()->trap_state(); |
384 |
} |
|
385 |
void set_trap_state(int new_state) { |
|
386 |
data()->set_trap_state(new_state); |
|
387 |
} |
|
388 |
||
389 |
// Type checking |
|
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|
390 |
virtual bool is_BitData() const { return false; } |
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|
391 |
virtual bool is_CounterData() const { return false; } |
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|
392 |
virtual bool is_JumpData() const { return false; } |
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|
393 |
virtual bool is_ReceiverTypeData()const { return false; } |
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|
394 |
virtual bool is_VirtualCallData() const { return false; } |
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|
395 |
virtual bool is_RetData() const { return false; } |
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|
396 |
virtual bool is_BranchData() const { return false; } |
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|
397 |
virtual bool is_ArrayData() const { return false; } |
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|
398 |
virtual bool is_MultiBranchData() const { return false; } |
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|
399 |
virtual bool is_ArgInfoData() const { return false; } |
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|
400 |
virtual bool is_CallTypeData() const { return false; } |
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|
401 |
virtual bool is_VirtualCallTypeData()const { return false; } |
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|
402 |
virtual bool is_ParametersTypeData() const { return false; } |
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|
403 |
|
1 | 404 |
|
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|
405 |
BitData* as_BitData() const { |
1 | 406 |
assert(is_BitData(), "wrong type"); |
407 |
return is_BitData() ? (BitData*) this : NULL; |
|
408 |
} |
|
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|
409 |
CounterData* as_CounterData() const { |
1 | 410 |
assert(is_CounterData(), "wrong type"); |
411 |
return is_CounterData() ? (CounterData*) this : NULL; |
|
412 |
} |
|
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|
413 |
JumpData* as_JumpData() const { |
1 | 414 |
assert(is_JumpData(), "wrong type"); |
415 |
return is_JumpData() ? (JumpData*) this : NULL; |
|
416 |
} |
|
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|
417 |
ReceiverTypeData* as_ReceiverTypeData() const { |
1 | 418 |
assert(is_ReceiverTypeData(), "wrong type"); |
419 |
return is_ReceiverTypeData() ? (ReceiverTypeData*)this : NULL; |
|
420 |
} |
|
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|
421 |
VirtualCallData* as_VirtualCallData() const { |
1 | 422 |
assert(is_VirtualCallData(), "wrong type"); |
423 |
return is_VirtualCallData() ? (VirtualCallData*)this : NULL; |
|
424 |
} |
|
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|
425 |
RetData* as_RetData() const { |
1 | 426 |
assert(is_RetData(), "wrong type"); |
427 |
return is_RetData() ? (RetData*) this : NULL; |
|
428 |
} |
|
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|
429 |
BranchData* as_BranchData() const { |
1 | 430 |
assert(is_BranchData(), "wrong type"); |
431 |
return is_BranchData() ? (BranchData*) this : NULL; |
|
432 |
} |
|
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|
433 |
ArrayData* as_ArrayData() const { |
1 | 434 |
assert(is_ArrayData(), "wrong type"); |
435 |
return is_ArrayData() ? (ArrayData*) this : NULL; |
|
436 |
} |
|
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|
437 |
MultiBranchData* as_MultiBranchData() const { |
1 | 438 |
assert(is_MultiBranchData(), "wrong type"); |
439 |
return is_MultiBranchData() ? (MultiBranchData*)this : NULL; |
|
440 |
} |
|
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|
441 |
ArgInfoData* as_ArgInfoData() const { |
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|
442 |
assert(is_ArgInfoData(), "wrong type"); |
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|
443 |
return is_ArgInfoData() ? (ArgInfoData*)this : NULL; |
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|
444 |
} |
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|
445 |
CallTypeData* as_CallTypeData() const { |
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|
446 |
assert(is_CallTypeData(), "wrong type"); |
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|
447 |
return is_CallTypeData() ? (CallTypeData*)this : NULL; |
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|
448 |
} |
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|
449 |
VirtualCallTypeData* as_VirtualCallTypeData() const { |
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|
450 |
assert(is_VirtualCallTypeData(), "wrong type"); |
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|
451 |
return is_VirtualCallTypeData() ? (VirtualCallTypeData*)this : NULL; |
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|
452 |
} |
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|
453 |
ParametersTypeData* as_ParametersTypeData() const { |
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|
454 |
assert(is_ParametersTypeData(), "wrong type"); |
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|
455 |
return is_ParametersTypeData() ? (ParametersTypeData*)this : NULL; |
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|
456 |
} |
1 | 457 |
|
458 |
||
459 |
// Subclass specific initialization |
|
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|
460 |
virtual void post_initialize(BytecodeStream* stream, MethodData* mdo) {} |
1 | 461 |
|
462 |
// GC support |
|
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|
463 |
virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) {} |
1 | 464 |
|
465 |
// CI translation: ProfileData can represent both MethodDataOop data |
|
466 |
// as well as CIMethodData data. This function is provided for translating |
|
467 |
// an oop in a ProfileData to the ci equivalent. Generally speaking, |
|
468 |
// most ProfileData don't require any translation, so we provide the null |
|
469 |
// translation here, and the required translators are in the ci subclasses. |
|
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|
470 |
virtual void translate_from(const ProfileData* data) {} |
1 | 471 |
|
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|
472 |
virtual void print_data_on(outputStream* st) const { |
1 | 473 |
ShouldNotReachHere(); |
474 |
} |
|
475 |
||
476 |
#ifndef PRODUCT |
|
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|
477 |
void print_shared(outputStream* st, const char* name) const; |
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|
478 |
void tab(outputStream* st, bool first = false) const; |
1 | 479 |
#endif |
480 |
}; |
|
481 |
||
482 |
// BitData |
|
483 |
// |
|
484 |
// A BitData holds a flag or two in its header. |
|
485 |
class BitData : public ProfileData { |
|
486 |
protected: |
|
487 |
enum { |
|
488 |
// null_seen: |
|
489 |
// saw a null operand (cast/aastore/instanceof) |
|
490 |
null_seen_flag = DataLayout::first_flag + 0 |
|
491 |
}; |
|
492 |
enum { bit_cell_count = 0 }; // no additional data fields needed. |
|
493 |
public: |
|
494 |
BitData(DataLayout* layout) : ProfileData(layout) { |
|
495 |
} |
|
496 |
||
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|
497 |
virtual bool is_BitData() const { return true; } |
1 | 498 |
|
499 |
static int static_cell_count() { |
|
500 |
return bit_cell_count; |
|
501 |
} |
|
502 |
||
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|
503 |
virtual int cell_count() const { |
1 | 504 |
return static_cell_count(); |
505 |
} |
|
506 |
||
507 |
// Accessor |
|
508 |
||
509 |
// The null_seen flag bit is specially known to the interpreter. |
|
510 |
// Consulting it allows the compiler to avoid setting up null_check traps. |
|
511 |
bool null_seen() { return flag_at(null_seen_flag); } |
|
512 |
void set_null_seen() { set_flag_at(null_seen_flag); } |
|
513 |
||
514 |
||
515 |
// Code generation support |
|
516 |
static int null_seen_byte_constant() { |
|
517 |
return flag_number_to_byte_constant(null_seen_flag); |
|
518 |
} |
|
519 |
||
520 |
static ByteSize bit_data_size() { |
|
521 |
return cell_offset(bit_cell_count); |
|
522 |
} |
|
523 |
||
524 |
#ifndef PRODUCT |
|
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|
525 |
void print_data_on(outputStream* st) const; |
1 | 526 |
#endif |
527 |
}; |
|
528 |
||
529 |
// CounterData |
|
530 |
// |
|
531 |
// A CounterData corresponds to a simple counter. |
|
532 |
class CounterData : public BitData { |
|
533 |
protected: |
|
534 |
enum { |
|
535 |
count_off, |
|
536 |
counter_cell_count |
|
537 |
}; |
|
538 |
public: |
|
539 |
CounterData(DataLayout* layout) : BitData(layout) {} |
|
540 |
||
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|
541 |
virtual bool is_CounterData() const { return true; } |
1 | 542 |
|
543 |
static int static_cell_count() { |
|
544 |
return counter_cell_count; |
|
545 |
} |
|
546 |
||
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|
547 |
virtual int cell_count() const { |
1 | 548 |
return static_cell_count(); |
549 |
} |
|
550 |
||
551 |
// Direct accessor |
|
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|
552 |
uint count() const { |
1 | 553 |
return uint_at(count_off); |
554 |
} |
|
555 |
||
556 |
// Code generation support |
|
557 |
static ByteSize count_offset() { |
|
558 |
return cell_offset(count_off); |
|
559 |
} |
|
560 |
static ByteSize counter_data_size() { |
|
561 |
return cell_offset(counter_cell_count); |
|
562 |
} |
|
563 |
||
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|
564 |
void set_count(uint count) { |
e977b527544a
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|
565 |
set_uint_at(count_off, count); |
e977b527544a
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|
566 |
} |
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|
567 |
|
1 | 568 |
#ifndef PRODUCT |
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changeset
|
569 |
void print_data_on(outputStream* st) const; |
1 | 570 |
#endif |
571 |
}; |
|
572 |
||
573 |
// JumpData |
|
574 |
// |
|
575 |
// A JumpData is used to access profiling information for a direct |
|
576 |
// branch. It is a counter, used for counting the number of branches, |
|
577 |
// plus a data displacement, used for realigning the data pointer to |
|
578 |
// the corresponding target bci. |
|
579 |
class JumpData : public ProfileData { |
|
580 |
protected: |
|
581 |
enum { |
|
582 |
taken_off_set, |
|
583 |
displacement_off_set, |
|
584 |
jump_cell_count |
|
585 |
}; |
|
586 |
||
587 |
void set_displacement(int displacement) { |
|
588 |
set_int_at(displacement_off_set, displacement); |
|
589 |
} |
|
590 |
||
591 |
public: |
|
592 |
JumpData(DataLayout* layout) : ProfileData(layout) { |
|
593 |
assert(layout->tag() == DataLayout::jump_data_tag || |
|
594 |
layout->tag() == DataLayout::branch_data_tag, "wrong type"); |
|
595 |
} |
|
596 |
||
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changeset
|
597 |
virtual bool is_JumpData() const { return true; } |
1 | 598 |
|
599 |
static int static_cell_count() { |
|
600 |
return jump_cell_count; |
|
601 |
} |
|
602 |
||
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changeset
|
603 |
virtual int cell_count() const { |
1 | 604 |
return static_cell_count(); |
605 |
} |
|
606 |
||
607 |
// Direct accessor |
|
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changeset
|
608 |
uint taken() const { |
1 | 609 |
return uint_at(taken_off_set); |
610 |
} |
|
10514
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changeset
|
611 |
|
e229a19078cf
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|
612 |
void set_taken(uint cnt) { |
e229a19078cf
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|
613 |
set_uint_at(taken_off_set, cnt); |
e229a19078cf
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|
614 |
} |
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changeset
|
615 |
|
1 | 616 |
// Saturating counter |
617 |
uint inc_taken() { |
|
618 |
uint cnt = taken() + 1; |
|
619 |
// Did we wrap? Will compiler screw us?? |
|
620 |
if (cnt == 0) cnt--; |
|
621 |
set_uint_at(taken_off_set, cnt); |
|
622 |
return cnt; |
|
623 |
} |
|
624 |
||
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changeset
|
625 |
int displacement() const { |
1 | 626 |
return int_at(displacement_off_set); |
627 |
} |
|
628 |
||
629 |
// Code generation support |
|
630 |
static ByteSize taken_offset() { |
|
631 |
return cell_offset(taken_off_set); |
|
632 |
} |
|
633 |
||
634 |
static ByteSize displacement_offset() { |
|
635 |
return cell_offset(displacement_off_set); |
|
636 |
} |
|
637 |
||
638 |
// Specific initialization. |
|
13728
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|
639 |
void post_initialize(BytecodeStream* stream, MethodData* mdo); |
1 | 640 |
|
641 |
#ifndef PRODUCT |
|
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|
642 |
void print_data_on(outputStream* st) const; |
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|
643 |
#endif |
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|
644 |
}; |
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changeset
|
645 |
|
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changeset
|
646 |
// Entries in a ProfileData object to record types: it can either be |
bbe0fcde6e13
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changeset
|
647 |
// none (no profile), unknown (conflicting profile data) or a klass if |
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|
648 |
// a single one is seen. Whether a null reference was seen is also |
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|
649 |
// recorded. No counter is associated with the type and a single type |
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|
650 |
// is tracked (unlike VirtualCallData). |
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|
651 |
class TypeEntries { |
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|
652 |
|
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8023657: New type profiling points: arguments to call
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changeset
|
653 |
public: |
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changeset
|
654 |
|
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|
655 |
// A single cell is used to record information for a type: |
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|
656 |
// - the cell is initialized to 0 |
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|
657 |
// - when a type is discovered it is stored in the cell |
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|
658 |
// - bit zero of the cell is used to record whether a null reference |
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|
659 |
// was encountered or not |
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|
660 |
// - bit 1 is set to record a conflict in the type information |
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changeset
|
661 |
|
bbe0fcde6e13
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|
662 |
enum { |
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|
663 |
null_seen = 1, |
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|
664 |
type_mask = ~null_seen, |
bbe0fcde6e13
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|
665 |
type_unknown = 2, |
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|
666 |
status_bits = null_seen | type_unknown, |
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|
667 |
type_klass_mask = ~status_bits |
bbe0fcde6e13
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changeset
|
668 |
}; |
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changeset
|
669 |
|
bbe0fcde6e13
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parents:
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changeset
|
670 |
// what to initialize a cell to |
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|
671 |
static intptr_t type_none() { |
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changeset
|
672 |
return 0; |
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changeset
|
673 |
} |
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8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
674 |
|
bbe0fcde6e13
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parents:
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diff
changeset
|
675 |
// null seen = bit 0 set? |
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parents:
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changeset
|
676 |
static bool was_null_seen(intptr_t v) { |
bbe0fcde6e13
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parents:
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|
677 |
return (v & null_seen) != 0; |
bbe0fcde6e13
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parents:
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diff
changeset
|
678 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
679 |
|
bbe0fcde6e13
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parents:
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diff
changeset
|
680 |
// conflicting type information = bit 1 set? |
bbe0fcde6e13
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parents:
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changeset
|
681 |
static bool is_type_unknown(intptr_t v) { |
bbe0fcde6e13
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parents:
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changeset
|
682 |
return (v & type_unknown) != 0; |
bbe0fcde6e13
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parents:
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diff
changeset
|
683 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
684 |
|
bbe0fcde6e13
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parents:
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changeset
|
685 |
// not type information yet = all bits cleared, ignoring bit 0? |
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parents:
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|
686 |
static bool is_type_none(intptr_t v) { |
bbe0fcde6e13
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parents:
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changeset
|
687 |
return (v & type_mask) == 0; |
bbe0fcde6e13
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parents:
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diff
changeset
|
688 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
689 |
|
bbe0fcde6e13
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parents:
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changeset
|
690 |
// recorded type: cell without bit 0 and 1 |
bbe0fcde6e13
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changeset
|
691 |
static intptr_t klass_part(intptr_t v) { |
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|
692 |
intptr_t r = v & type_klass_mask; |
bbe0fcde6e13
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parents:
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|
693 |
assert (r != 0, "invalid"); |
bbe0fcde6e13
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parents:
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changeset
|
694 |
return r; |
bbe0fcde6e13
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parents:
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changeset
|
695 |
} |
bbe0fcde6e13
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parents:
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diff
changeset
|
696 |
|
bbe0fcde6e13
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parents:
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changeset
|
697 |
// type recorded |
bbe0fcde6e13
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changeset
|
698 |
static Klass* valid_klass(intptr_t k) { |
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|
699 |
if (!is_type_none(k) && |
bbe0fcde6e13
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parents:
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diff
changeset
|
700 |
!is_type_unknown(k)) { |
bbe0fcde6e13
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parents:
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diff
changeset
|
701 |
return (Klass*)klass_part(k); |
bbe0fcde6e13
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parents:
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changeset
|
702 |
} else { |
bbe0fcde6e13
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parents:
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changeset
|
703 |
return NULL; |
bbe0fcde6e13
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parents:
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diff
changeset
|
704 |
} |
bbe0fcde6e13
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parents:
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diff
changeset
|
705 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
706 |
|
bbe0fcde6e13
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parents:
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changeset
|
707 |
static intptr_t with_status(intptr_t k, intptr_t in) { |
bbe0fcde6e13
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parents:
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changeset
|
708 |
return k | (in & status_bits); |
bbe0fcde6e13
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parents:
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diff
changeset
|
709 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
710 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
711 |
static intptr_t with_status(Klass* k, intptr_t in) { |
bbe0fcde6e13
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parents:
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changeset
|
712 |
return with_status((intptr_t)k, in); |
bbe0fcde6e13
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parents:
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diff
changeset
|
713 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
714 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
715 |
#ifndef PRODUCT |
bbe0fcde6e13
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parents:
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changeset
|
716 |
static void print_klass(outputStream* st, intptr_t k); |
bbe0fcde6e13
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parents:
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changeset
|
717 |
#endif |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
718 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
719 |
// GC support |
bbe0fcde6e13
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changeset
|
720 |
static bool is_loader_alive(BoolObjectClosure* is_alive_cl, intptr_t p); |
bbe0fcde6e13
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parents:
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changeset
|
721 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
722 |
protected: |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
723 |
// ProfileData object these entries are part of |
bbe0fcde6e13
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parents:
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diff
changeset
|
724 |
ProfileData* _pd; |
bbe0fcde6e13
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parents:
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diff
changeset
|
725 |
// offset within the ProfileData object where the entries start |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
726 |
const int _base_off; |
bbe0fcde6e13
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parents:
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diff
changeset
|
727 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
728 |
TypeEntries(int base_off) |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
729 |
: _base_off(base_off), _pd(NULL) {} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
730 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
731 |
void set_intptr_at(int index, intptr_t value) { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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changeset
|
732 |
_pd->set_intptr_at(index, value); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
733 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
734 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
735 |
intptr_t intptr_at(int index) const { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
736 |
return _pd->intptr_at(index); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
737 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
738 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
739 |
public: |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
740 |
void set_profile_data(ProfileData* pd) { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
741 |
_pd = pd; |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
742 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
743 |
}; |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
744 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
745 |
// Type entries used for arguments passed at a call and parameters on |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
746 |
// method entry. 2 cells per entry: one for the type encoded as in |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
747 |
// TypeEntries and one initialized with the stack slot where the |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
748 |
// profiled object is to be found so that the interpreter can locate |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
749 |
// it quickly. |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
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diff
changeset
|
750 |
class TypeStackSlotEntries : public TypeEntries { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
751 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
752 |
private: |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
753 |
enum { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
754 |
stack_slot_entry, |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
755 |
type_entry, |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
756 |
per_arg_cell_count |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
757 |
}; |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
758 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
759 |
// offset of cell for stack slot for entry i within ProfileData object |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
760 |
int stack_slot_offset(int i) const { |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
761 |
return _base_off + stack_slot_local_offset(i); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
762 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
763 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
764 |
protected: |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
765 |
const int _number_of_entries; |
20702
bbe0fcde6e13
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parents:
20282
diff
changeset
|
766 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
767 |
// offset of cell for type for entry i within ProfileData object |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
768 |
int type_offset(int i) const { |
20702
bbe0fcde6e13
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parents:
20282
diff
changeset
|
769 |
return _base_off + type_local_offset(i); |
bbe0fcde6e13
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roland
parents:
20282
diff
changeset
|
770 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
771 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
772 |
public: |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
773 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
774 |
TypeStackSlotEntries(int base_off, int nb_entries) |
034be898bf04
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roland
parents:
20702
diff
changeset
|
775 |
: TypeEntries(base_off), _number_of_entries(nb_entries) {} |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
776 |
|
21095
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
777 |
static int compute_cell_count(Symbol* signature, bool include_receiver, int max); |
20702
bbe0fcde6e13
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parents:
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diff
changeset
|
778 |
|
21095
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
779 |
void post_initialize(Symbol* signature, bool has_receiver, bool include_receiver); |
20702
bbe0fcde6e13
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parents:
20282
diff
changeset
|
780 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
781 |
// offset of cell for stack slot for entry i within this block of cells for a TypeStackSlotEntries |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
782 |
static int stack_slot_local_offset(int i) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
783 |
return i * per_arg_cell_count + stack_slot_entry; |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
784 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
785 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
786 |
// offset of cell for type for entry i within this block of cells for a TypeStackSlotEntries |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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changeset
|
787 |
static int type_local_offset(int i) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
788 |
return i * per_arg_cell_count + type_entry; |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
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diff
changeset
|
789 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
790 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
791 |
// stack slot for entry i |
bbe0fcde6e13
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parents:
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diff
changeset
|
792 |
uint stack_slot(int i) const { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
793 |
assert(i >= 0 && i < _number_of_entries, "oob"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
794 |
return _pd->uint_at(stack_slot_offset(i)); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
795 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
796 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
797 |
// set stack slot for entry i |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
798 |
void set_stack_slot(int i, uint num) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
799 |
assert(i >= 0 && i < _number_of_entries, "oob"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
800 |
_pd->set_uint_at(stack_slot_offset(i), num); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
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diff
changeset
|
801 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
802 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
803 |
// type for entry i |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
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diff
changeset
|
804 |
intptr_t type(int i) const { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
805 |
assert(i >= 0 && i < _number_of_entries, "oob"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
806 |
return _pd->intptr_at(type_offset(i)); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
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diff
changeset
|
807 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
808 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
809 |
// set type for entry i |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
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diff
changeset
|
810 |
void set_type(int i, intptr_t k) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
811 |
assert(i >= 0 && i < _number_of_entries, "oob"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
812 |
_pd->set_intptr_at(type_offset(i), k); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
813 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
814 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
815 |
static ByteSize per_arg_size() { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
816 |
return in_ByteSize(per_arg_cell_count * DataLayout::cell_size); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
817 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
818 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
819 |
static int per_arg_count() { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
820 |
return per_arg_cell_count ; |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
821 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
822 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
823 |
// GC support |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
824 |
void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
825 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
826 |
#ifndef PRODUCT |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
827 |
void print_data_on(outputStream* st) const; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
828 |
#endif |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
829 |
}; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
830 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
831 |
// Type entry used for return from a call. A single cell to record the |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
832 |
// type. |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
833 |
class ReturnTypeEntry : public TypeEntries { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
834 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
835 |
private: |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
836 |
enum { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
837 |
cell_count = 1 |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
838 |
}; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
839 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
840 |
public: |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
841 |
ReturnTypeEntry(int base_off) |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
842 |
: TypeEntries(base_off) {} |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
843 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
844 |
void post_initialize() { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
845 |
set_type(type_none()); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
846 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
847 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
848 |
intptr_t type() const { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
849 |
return _pd->intptr_at(_base_off); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
850 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
851 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
852 |
void set_type(intptr_t k) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
853 |
_pd->set_intptr_at(_base_off, k); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
854 |
} |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
855 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
856 |
static int static_cell_count() { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
857 |
return cell_count; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
858 |
} |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
859 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
860 |
static ByteSize size() { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
861 |
return in_ByteSize(cell_count * DataLayout::cell_size); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
862 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
863 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
864 |
ByteSize type_offset() { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
865 |
return DataLayout::cell_offset(_base_off); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
866 |
} |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
867 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
868 |
// GC support |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
869 |
void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
870 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
871 |
#ifndef PRODUCT |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
872 |
void print_data_on(outputStream* st) const; |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
873 |
#endif |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
874 |
}; |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
875 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
876 |
// Entries to collect type information at a call: contains arguments |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
877 |
// (TypeStackSlotEntries), a return type (ReturnTypeEntry) and a |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
878 |
// number of cells. Because the number of cells for the return type is |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
879 |
// smaller than the number of cells for the type of an arguments, the |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
880 |
// number of cells is used to tell how many arguments are profiled and |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
881 |
// whether a return value is profiled. See has_arguments() and |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
882 |
// has_return(). |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
883 |
class TypeEntriesAtCall { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
884 |
private: |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
885 |
static int stack_slot_local_offset(int i) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
886 |
return header_cell_count() + TypeStackSlotEntries::stack_slot_local_offset(i); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
887 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
888 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
889 |
static int argument_type_local_offset(int i) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
890 |
return header_cell_count() + TypeStackSlotEntries::type_local_offset(i);; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
891 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
892 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
893 |
public: |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
894 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
895 |
static int header_cell_count() { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
896 |
return 1; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
897 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
898 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
899 |
static int cell_count_local_offset() { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
900 |
return 0; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
901 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
902 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
903 |
static int compute_cell_count(BytecodeStream* stream); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
904 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
905 |
static void initialize(DataLayout* dl, int base, int cell_count) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
906 |
int off = base + cell_count_local_offset(); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
907 |
dl->set_cell_at(off, cell_count - base - header_cell_count()); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
908 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
909 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
910 |
static bool arguments_profiling_enabled(); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
911 |
static bool return_profiling_enabled(); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
912 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
913 |
// Code generation support |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
914 |
static ByteSize cell_count_offset() { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
915 |
return in_ByteSize(cell_count_local_offset() * DataLayout::cell_size); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
916 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
917 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
918 |
static ByteSize args_data_offset() { |
034be898bf04
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roland
parents:
20702
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changeset
|
919 |
return in_ByteSize(header_cell_count() * DataLayout::cell_size); |
034be898bf04
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parents:
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diff
changeset
|
920 |
} |
034be898bf04
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parents:
20702
diff
changeset
|
921 |
|
034be898bf04
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parents:
20702
diff
changeset
|
922 |
static ByteSize stack_slot_offset(int i) { |
034be898bf04
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roland
parents:
20702
diff
changeset
|
923 |
return in_ByteSize(stack_slot_local_offset(i) * DataLayout::cell_size); |
034be898bf04
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roland
parents:
20702
diff
changeset
|
924 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
925 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
926 |
static ByteSize argument_type_offset(int i) { |
034be898bf04
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roland
parents:
20702
diff
changeset
|
927 |
return in_ByteSize(argument_type_local_offset(i) * DataLayout::cell_size); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
928 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
929 |
}; |
034be898bf04
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roland
parents:
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diff
changeset
|
930 |
|
20702
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changeset
|
931 |
// CallTypeData |
bbe0fcde6e13
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changeset
|
932 |
// |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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changeset
|
933 |
// A CallTypeData is used to access profiling information about a non |
20709
034be898bf04
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parents:
20702
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changeset
|
934 |
// virtual call for which we collect type information about arguments |
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
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changeset
|
935 |
// and return value. |
20702
bbe0fcde6e13
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parents:
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changeset
|
936 |
class CallTypeData : public CounterData { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
937 |
private: |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
20702
diff
changeset
|
938 |
// entries for arguments if any |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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changeset
|
939 |
TypeStackSlotEntries _args; |
20709
034be898bf04
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roland
parents:
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changeset
|
940 |
// entry for return type if any |
034be898bf04
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parents:
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diff
changeset
|
941 |
ReturnTypeEntry _ret; |
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
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diff
changeset
|
942 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
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diff
changeset
|
943 |
int cell_count_global_offset() const { |
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
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diff
changeset
|
944 |
return CounterData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
945 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
20702
diff
changeset
|
946 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
947 |
// number of cells not counting the header |
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
20702
diff
changeset
|
948 |
int cell_count_no_header() const { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
949 |
return uint_at(cell_count_global_offset()); |
034be898bf04
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roland
parents:
20702
diff
changeset
|
950 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
951 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
952 |
void check_number_of_arguments(int total) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
953 |
assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
954 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
955 |
|
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
956 |
public: |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
957 |
CallTypeData(DataLayout* layout) : |
20709
034be898bf04
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roland
parents:
20702
diff
changeset
|
958 |
CounterData(layout), |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
959 |
_args(CounterData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
960 |
_ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
961 |
{ |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
962 |
assert(layout->tag() == DataLayout::call_type_data_tag, "wrong type"); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
963 |
// Some compilers (VC++) don't want this passed in member initialization list |
bbe0fcde6e13
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parents:
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diff
changeset
|
964 |
_args.set_profile_data(this); |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
965 |
_ret.set_profile_data(this); |
20702
bbe0fcde6e13
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parents:
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diff
changeset
|
966 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
967 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
968 |
const TypeStackSlotEntries* args() const { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
969 |
assert(has_arguments(), "no profiling of arguments"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
970 |
return &_args; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
971 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
972 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
973 |
const ReturnTypeEntry* ret() const { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
974 |
assert(has_return(), "no profiling of return value"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
975 |
return &_ret; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
976 |
} |
20702
bbe0fcde6e13
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parents:
20282
diff
changeset
|
977 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
20282
diff
changeset
|
978 |
virtual bool is_CallTypeData() const { return true; } |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
979 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
980 |
static int static_cell_count() { |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
981 |
return -1; |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
982 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
983 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
984 |
static int compute_cell_count(BytecodeStream* stream) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
985 |
return CounterData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
986 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
987 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
988 |
static void initialize(DataLayout* dl, int cell_count) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
989 |
TypeEntriesAtCall::initialize(dl, CounterData::static_cell_count(), cell_count); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
990 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
991 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
992 |
virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
993 |
|
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
994 |
virtual int cell_count() const { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
995 |
return CounterData::static_cell_count() + |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
996 |
TypeEntriesAtCall::header_cell_count() + |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
997 |
int_at_unchecked(cell_count_global_offset()); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
998 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
999 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1000 |
int number_of_arguments() const { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1001 |
return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1002 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1003 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1004 |
void set_argument_type(int i, Klass* k) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1005 |
assert(has_arguments(), "no arguments!"); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1006 |
intptr_t current = _args.type(i); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1007 |
_args.set_type(i, TypeEntries::with_status(k, current)); |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1008 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1009 |
|
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1010 |
void set_return_type(Klass* k) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1011 |
assert(has_return(), "no return!"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1012 |
intptr_t current = _ret.type(); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1013 |
_ret.set_type(TypeEntries::with_status(k, current)); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1014 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1015 |
|
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1016 |
// An entry for a return value takes less space than an entry for an |
21095
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1017 |
// argument so if the number of cells exceeds the number of cells |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1018 |
// needed for an argument, this object contains type information for |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1019 |
// at least one argument. |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1020 |
bool has_arguments() const { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1021 |
bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1022 |
assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1023 |
return res; |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1024 |
} |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1025 |
|
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1026 |
// An entry for a return value takes less space than an entry for an |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1027 |
// argument, so if the remainder of the number of cells divided by |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1028 |
// the number of cells for an argument is not null, a return value |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1029 |
// is profiled in this object. |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1030 |
bool has_return() const { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1031 |
bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1032 |
assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1033 |
return res; |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1034 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1035 |
|
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1036 |
// Code generation support |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1037 |
static ByteSize args_data_offset() { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1038 |
return cell_offset(CounterData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1039 |
} |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1040 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1041 |
// GC support |
bbe0fcde6e13
8023657: New type profiling points: arguments to call
roland
parents:
20282
diff
changeset
|
1042 |
virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1043 |
if (has_arguments()) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1044 |
_args.clean_weak_klass_links(is_alive_closure); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1045 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1046 |
if (has_return()) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1047 |
_ret.clean_weak_klass_links(is_alive_closure); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1048 |
} |
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|
1049 |
} |
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|
1050 |
|
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|
1051 |
#ifndef PRODUCT |
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|
1052 |
virtual void print_data_on(outputStream* st) const; |
1 | 1053 |
#endif |
1054 |
}; |
|
1055 |
||
1056 |
// ReceiverTypeData |
|
1057 |
// |
|
1058 |
// A ReceiverTypeData is used to access profiling information about a |
|
1059 |
// dynamic type check. It consists of a counter which counts the total times |
|
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|
1060 |
// that the check is reached, and a series of (Klass*, count) pairs |
1 | 1061 |
// which are used to store a type profile for the receiver of the check. |
1062 |
class ReceiverTypeData : public CounterData { |
|
1063 |
protected: |
|
1064 |
enum { |
|
1065 |
receiver0_offset = counter_cell_count, |
|
1066 |
count0_offset, |
|
1067 |
receiver_type_row_cell_count = (count0_offset + 1) - receiver0_offset |
|
1068 |
}; |
|
1069 |
||
1070 |
public: |
|
1071 |
ReceiverTypeData(DataLayout* layout) : CounterData(layout) { |
|
1072 |
assert(layout->tag() == DataLayout::receiver_type_data_tag || |
|
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|
1073 |
layout->tag() == DataLayout::virtual_call_data_tag || |
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|
1074 |
layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
1 | 1075 |
} |
1076 |
||
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|
1077 |
virtual bool is_ReceiverTypeData() const { return true; } |
1 | 1078 |
|
1079 |
static int static_cell_count() { |
|
1080 |
return counter_cell_count + (uint) TypeProfileWidth * receiver_type_row_cell_count; |
|
1081 |
} |
|
1082 |
||
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|
1083 |
virtual int cell_count() const { |
1 | 1084 |
return static_cell_count(); |
1085 |
} |
|
1086 |
||
1087 |
// Direct accessors |
|
1088 |
static uint row_limit() { |
|
1089 |
return TypeProfileWidth; |
|
1090 |
} |
|
1091 |
static int receiver_cell_index(uint row) { |
|
1092 |
return receiver0_offset + row * receiver_type_row_cell_count; |
|
1093 |
} |
|
1094 |
static int receiver_count_cell_index(uint row) { |
|
1095 |
return count0_offset + row * receiver_type_row_cell_count; |
|
1096 |
} |
|
1097 |
||
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|
1098 |
Klass* receiver(uint row) const { |
1 | 1099 |
assert(row < row_limit(), "oob"); |
1100 |
||
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1101 |
Klass* recv = (Klass*)intptr_at(receiver_cell_index(row)); |
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|
1102 |
assert(recv == NULL || recv->is_klass(), "wrong type"); |
1 | 1103 |
return recv; |
1104 |
} |
|
1105 |
||
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1106 |
void set_receiver(uint row, Klass* k) { |
3696 | 1107 |
assert((uint)row < row_limit(), "oob"); |
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1108 |
set_intptr_at(receiver_cell_index(row), (uintptr_t)k); |
3696 | 1109 |
} |
1110 |
||
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|
1111 |
uint receiver_count(uint row) const { |
1 | 1112 |
assert(row < row_limit(), "oob"); |
1113 |
return uint_at(receiver_count_cell_index(row)); |
|
1114 |
} |
|
1115 |
||
3696 | 1116 |
void set_receiver_count(uint row, uint count) { |
1117 |
assert(row < row_limit(), "oob"); |
|
1118 |
set_uint_at(receiver_count_cell_index(row), count); |
|
1119 |
} |
|
1120 |
||
1121 |
void clear_row(uint row) { |
|
1122 |
assert(row < row_limit(), "oob"); |
|
4892
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|
1123 |
// Clear total count - indicator of polymorphic call site. |
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|
1124 |
// The site may look like as monomorphic after that but |
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|
1125 |
// it allow to have more accurate profiling information because |
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|
1126 |
// there was execution phase change since klasses were unloaded. |
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|
1127 |
// If the site is still polymorphic then MDO will be updated |
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|
1128 |
// to reflect it. But it could be the case that the site becomes |
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|
1129 |
// only bimorphic. Then keeping total count not 0 will be wrong. |
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|
1130 |
// Even if we use monomorphic (when it is not) for compilation |
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|
1131 |
// we will only have trap, deoptimization and recompile again |
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|
1132 |
// with updated MDO after executing method in Interpreter. |
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|
1133 |
// An additional receiver will be recorded in the cleaned row |
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|
1134 |
// during next call execution. |
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|
1135 |
// |
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|
1136 |
// Note: our profiling logic works with empty rows in any slot. |
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|
1137 |
// We do sorting a profiling info (ciCallProfile) for compilation. |
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|
1138 |
// |
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|
1139 |
set_count(0); |
3696 | 1140 |
set_receiver(row, NULL); |
1141 |
set_receiver_count(row, 0); |
|
1142 |
} |
|
1143 |
||
1 | 1144 |
// Code generation support |
1145 |
static ByteSize receiver_offset(uint row) { |
|
1146 |
return cell_offset(receiver_cell_index(row)); |
|
1147 |
} |
|
1148 |
static ByteSize receiver_count_offset(uint row) { |
|
1149 |
return cell_offset(receiver_count_cell_index(row)); |
|
1150 |
} |
|
1151 |
static ByteSize receiver_type_data_size() { |
|
1152 |
return cell_offset(static_cell_count()); |
|
1153 |
} |
|
1154 |
||
1155 |
// GC support |
|
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|
1156 |
virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure); |
1 | 1157 |
|
1158 |
#ifndef PRODUCT |
|
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|
1159 |
void print_receiver_data_on(outputStream* st) const; |
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|
1160 |
void print_data_on(outputStream* st) const; |
1 | 1161 |
#endif |
1162 |
}; |
|
1163 |
||
1164 |
// VirtualCallData |
|
1165 |
// |
|
1166 |
// A VirtualCallData is used to access profiling information about a |
|
1167 |
// virtual call. For now, it has nothing more than a ReceiverTypeData. |
|
1168 |
class VirtualCallData : public ReceiverTypeData { |
|
1169 |
public: |
|
1170 |
VirtualCallData(DataLayout* layout) : ReceiverTypeData(layout) { |
|
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|
1171 |
assert(layout->tag() == DataLayout::virtual_call_data_tag || |
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|
1172 |
layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
1 | 1173 |
} |
1174 |
||
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|
1175 |
virtual bool is_VirtualCallData() const { return true; } |
1 | 1176 |
|
1177 |
static int static_cell_count() { |
|
1178 |
// At this point we could add more profile state, e.g., for arguments. |
|
1179 |
// But for now it's the same size as the base record type. |
|
1180 |
return ReceiverTypeData::static_cell_count(); |
|
1181 |
} |
|
1182 |
||
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|
1183 |
virtual int cell_count() const { |
1 | 1184 |
return static_cell_count(); |
1185 |
} |
|
1186 |
||
1187 |
// Direct accessors |
|
1188 |
static ByteSize virtual_call_data_size() { |
|
1189 |
return cell_offset(static_cell_count()); |
|
1190 |
} |
|
1191 |
||
1192 |
#ifndef PRODUCT |
|
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|
1193 |
void print_data_on(outputStream* st) const; |
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|
1194 |
#endif |
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|
1195 |
}; |
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|
1196 |
|
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|
1197 |
// VirtualCallTypeData |
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|
1198 |
// |
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|
1199 |
// A VirtualCallTypeData is used to access profiling information about |
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|
1200 |
// a virtual call for which we collect type information about |
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|
1201 |
// arguments and return value. |
20702
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|
1202 |
class VirtualCallTypeData : public VirtualCallData { |
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|
1203 |
private: |
20709
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|
1204 |
// entries for arguments if any |
20702
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|
1205 |
TypeStackSlotEntries _args; |
20709
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|
1206 |
// entry for return type if any |
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|
1207 |
ReturnTypeEntry _ret; |
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changeset
|
1208 |
|
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|
1209 |
int cell_count_global_offset() const { |
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|
1210 |
return VirtualCallData::static_cell_count() + TypeEntriesAtCall::cell_count_local_offset(); |
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|
1211 |
} |
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changeset
|
1212 |
|
034be898bf04
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changeset
|
1213 |
// number of cells not counting the header |
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changeset
|
1214 |
int cell_count_no_header() const { |
034be898bf04
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changeset
|
1215 |
return uint_at(cell_count_global_offset()); |
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changeset
|
1216 |
} |
034be898bf04
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changeset
|
1217 |
|
034be898bf04
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|
1218 |
void check_number_of_arguments(int total) { |
034be898bf04
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changeset
|
1219 |
assert(number_of_arguments() == total, "should be set in DataLayout::initialize"); |
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changeset
|
1220 |
} |
034be898bf04
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changeset
|
1221 |
|
20702
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|
1222 |
public: |
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|
1223 |
VirtualCallTypeData(DataLayout* layout) : |
20709
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|
1224 |
VirtualCallData(layout), |
034be898bf04
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changeset
|
1225 |
_args(VirtualCallData::static_cell_count()+TypeEntriesAtCall::header_cell_count(), number_of_arguments()), |
034be898bf04
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changeset
|
1226 |
_ret(cell_count() - ReturnTypeEntry::static_cell_count()) |
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|
1227 |
{ |
20702
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changeset
|
1228 |
assert(layout->tag() == DataLayout::virtual_call_type_data_tag, "wrong type"); |
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changeset
|
1229 |
// Some compilers (VC++) don't want this passed in member initialization list |
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changeset
|
1230 |
_args.set_profile_data(this); |
20709
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changeset
|
1231 |
_ret.set_profile_data(this); |
20702
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|
1232 |
} |
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|
1233 |
|
20709
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|
1234 |
const TypeStackSlotEntries* args() const { |
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changeset
|
1235 |
assert(has_arguments(), "no profiling of arguments"); |
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changeset
|
1236 |
return &_args; |
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changeset
|
1237 |
} |
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changeset
|
1238 |
|
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changeset
|
1239 |
const ReturnTypeEntry* ret() const { |
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changeset
|
1240 |
assert(has_return(), "no profiling of return value"); |
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changeset
|
1241 |
return &_ret; |
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changeset
|
1242 |
} |
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|
1243 |
|
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|
1244 |
virtual bool is_VirtualCallTypeData() const { return true; } |
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|
1245 |
|
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|
1246 |
static int static_cell_count() { |
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|
1247 |
return -1; |
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|
1248 |
} |
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|
1249 |
|
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|
1250 |
static int compute_cell_count(BytecodeStream* stream) { |
20709
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changeset
|
1251 |
return VirtualCallData::static_cell_count() + TypeEntriesAtCall::compute_cell_count(stream); |
20702
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|
1252 |
} |
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changeset
|
1253 |
|
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|
1254 |
static void initialize(DataLayout* dl, int cell_count) { |
20709
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|
1255 |
TypeEntriesAtCall::initialize(dl, VirtualCallData::static_cell_count(), cell_count); |
20702
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|
1256 |
} |
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changeset
|
1257 |
|
20709
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|
1258 |
virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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changeset
|
1259 |
|
20702
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|
1260 |
virtual int cell_count() const { |
20709
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|
1261 |
return VirtualCallData::static_cell_count() + |
034be898bf04
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|
1262 |
TypeEntriesAtCall::header_cell_count() + |
034be898bf04
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|
1263 |
int_at_unchecked(cell_count_global_offset()); |
20702
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|
1264 |
} |
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changeset
|
1265 |
|
20709
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changeset
|
1266 |
int number_of_arguments() const { |
034be898bf04
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changeset
|
1267 |
return cell_count_no_header() / TypeStackSlotEntries::per_arg_count(); |
20702
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|
1268 |
} |
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changeset
|
1269 |
|
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|
1270 |
void set_argument_type(int i, Klass* k) { |
20709
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|
1271 |
assert(has_arguments(), "no arguments!"); |
20702
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|
1272 |
intptr_t current = _args.type(i); |
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|
1273 |
_args.set_type(i, TypeEntries::with_status(k, current)); |
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|
1274 |
} |
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changeset
|
1275 |
|
20709
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|
1276 |
void set_return_type(Klass* k) { |
034be898bf04
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|
1277 |
assert(has_return(), "no return!"); |
034be898bf04
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changeset
|
1278 |
intptr_t current = _ret.type(); |
034be898bf04
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|
1279 |
_ret.set_type(TypeEntries::with_status(k, current)); |
034be898bf04
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changeset
|
1280 |
} |
034be898bf04
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changeset
|
1281 |
|
034be898bf04
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|
1282 |
// An entry for a return value takes less space than an entry for an |
034be898bf04
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|
1283 |
// argument, so if the remainder of the number of cells divided by |
034be898bf04
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|
1284 |
// the number of cells for an argument is not null, a return value |
034be898bf04
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|
1285 |
// is profiled in this object. |
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|
1286 |
bool has_return() const { |
034be898bf04
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changeset
|
1287 |
bool res = (cell_count_no_header() % TypeStackSlotEntries::per_arg_count()) != 0; |
034be898bf04
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parents:
20702
diff
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|
1288 |
assert (!res || TypeEntriesAtCall::return_profiling_enabled(), "no profiling of return values"); |
034be898bf04
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parents:
20702
diff
changeset
|
1289 |
return res; |
034be898bf04
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parents:
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diff
changeset
|
1290 |
} |
034be898bf04
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diff
changeset
|
1291 |
|
21095
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1292 |
// An entry for a return value takes less space than an entry for an |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1293 |
// argument so if the number of cells exceeds the number of cells |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
20709
diff
changeset
|
1294 |
// needed for an argument, this object contains type information for |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
20709
diff
changeset
|
1295 |
// at least one argument. |
1a04f7b3946e
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diff
changeset
|
1296 |
bool has_arguments() const { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1297 |
bool res = cell_count_no_header() >= TypeStackSlotEntries::per_arg_count(); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
20709
diff
changeset
|
1298 |
assert (!res || TypeEntriesAtCall::arguments_profiling_enabled(), "no profiling of arguments"); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1299 |
return res; |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
1300 |
} |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1301 |
|
20702
bbe0fcde6e13
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|
1302 |
// Code generation support |
bbe0fcde6e13
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|
1303 |
static ByteSize args_data_offset() { |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
20702
diff
changeset
|
1304 |
return cell_offset(VirtualCallData::static_cell_count()) + TypeEntriesAtCall::args_data_offset(); |
20702
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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changeset
|
1305 |
} |
bbe0fcde6e13
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changeset
|
1306 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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changeset
|
1307 |
// GC support |
bbe0fcde6e13
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changeset
|
1308 |
virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
bbe0fcde6e13
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parents:
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|
1309 |
ReceiverTypeData::clean_weak_klass_links(is_alive_closure); |
20709
034be898bf04
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parents:
20702
diff
changeset
|
1310 |
if (has_arguments()) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1311 |
_args.clean_weak_klass_links(is_alive_closure); |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1312 |
} |
034be898bf04
8026054: New type profiling points: type of return values at calls
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parents:
20702
diff
changeset
|
1313 |
if (has_return()) { |
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
1314 |
_ret.clean_weak_klass_links(is_alive_closure); |
034be898bf04
8026054: New type profiling points: type of return values at calls
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changeset
|
1315 |
} |
20702
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changeset
|
1316 |
} |
bbe0fcde6e13
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changeset
|
1317 |
|
bbe0fcde6e13
8023657: New type profiling points: arguments to call
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parents:
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diff
changeset
|
1318 |
#ifndef PRODUCT |
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|
1319 |
virtual void print_data_on(outputStream* st) const; |
1 | 1320 |
#endif |
1321 |
}; |
|
1322 |
||
1323 |
// RetData |
|
1324 |
// |
|
1325 |
// A RetData is used to access profiling information for a ret bytecode. |
|
1326 |
// It is composed of a count of the number of times that the ret has |
|
1327 |
// been executed, followed by a series of triples of the form |
|
1328 |
// (bci, count, di) which count the number of times that some bci was the |
|
1329 |
// target of the ret and cache a corresponding data displacement. |
|
1330 |
class RetData : public CounterData { |
|
1331 |
protected: |
|
1332 |
enum { |
|
1333 |
bci0_offset = counter_cell_count, |
|
1334 |
count0_offset, |
|
1335 |
displacement0_offset, |
|
1336 |
ret_row_cell_count = (displacement0_offset + 1) - bci0_offset |
|
1337 |
}; |
|
1338 |
||
1339 |
void set_bci(uint row, int bci) { |
|
1340 |
assert((uint)row < row_limit(), "oob"); |
|
1341 |
set_int_at(bci0_offset + row * ret_row_cell_count, bci); |
|
1342 |
} |
|
1343 |
void release_set_bci(uint row, int bci) { |
|
1344 |
assert((uint)row < row_limit(), "oob"); |
|
1345 |
// 'release' when setting the bci acts as a valid flag for other |
|
1346 |
// threads wrt bci_count and bci_displacement. |
|
1347 |
release_set_int_at(bci0_offset + row * ret_row_cell_count, bci); |
|
1348 |
} |
|
1349 |
void set_bci_count(uint row, uint count) { |
|
1350 |
assert((uint)row < row_limit(), "oob"); |
|
1351 |
set_uint_at(count0_offset + row * ret_row_cell_count, count); |
|
1352 |
} |
|
1353 |
void set_bci_displacement(uint row, int disp) { |
|
1354 |
set_int_at(displacement0_offset + row * ret_row_cell_count, disp); |
|
1355 |
} |
|
1356 |
||
1357 |
public: |
|
1358 |
RetData(DataLayout* layout) : CounterData(layout) { |
|
1359 |
assert(layout->tag() == DataLayout::ret_data_tag, "wrong type"); |
|
1360 |
} |
|
1361 |
||
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diff
changeset
|
1362 |
virtual bool is_RetData() const { return true; } |
1 | 1363 |
|
1364 |
enum { |
|
1365 |
no_bci = -1 // value of bci when bci1/2 are not in use. |
|
1366 |
}; |
|
1367 |
||
1368 |
static int static_cell_count() { |
|
1369 |
return counter_cell_count + (uint) BciProfileWidth * ret_row_cell_count; |
|
1370 |
} |
|
1371 |
||
20702
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changeset
|
1372 |
virtual int cell_count() const { |
1 | 1373 |
return static_cell_count(); |
1374 |
} |
|
1375 |
||
1376 |
static uint row_limit() { |
|
1377 |
return BciProfileWidth; |
|
1378 |
} |
|
1379 |
static int bci_cell_index(uint row) { |
|
1380 |
return bci0_offset + row * ret_row_cell_count; |
|
1381 |
} |
|
1382 |
static int bci_count_cell_index(uint row) { |
|
1383 |
return count0_offset + row * ret_row_cell_count; |
|
1384 |
} |
|
1385 |
static int bci_displacement_cell_index(uint row) { |
|
1386 |
return displacement0_offset + row * ret_row_cell_count; |
|
1387 |
} |
|
1388 |
||
1389 |
// Direct accessors |
|
20702
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changeset
|
1390 |
int bci(uint row) const { |
1 | 1391 |
return int_at(bci_cell_index(row)); |
1392 |
} |
|
20702
bbe0fcde6e13
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diff
changeset
|
1393 |
uint bci_count(uint row) const { |
1 | 1394 |
return uint_at(bci_count_cell_index(row)); |
1395 |
} |
|
20702
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changeset
|
1396 |
int bci_displacement(uint row) const { |
1 | 1397 |
return int_at(bci_displacement_cell_index(row)); |
1398 |
} |
|
1399 |
||
1400 |
// Interpreter Runtime support |
|
13728
882756847a04
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coleenp
parents:
10514
diff
changeset
|
1401 |
address fixup_ret(int return_bci, MethodData* mdo); |
1 | 1402 |
|
1403 |
// Code generation support |
|
1404 |
static ByteSize bci_offset(uint row) { |
|
1405 |
return cell_offset(bci_cell_index(row)); |
|
1406 |
} |
|
1407 |
static ByteSize bci_count_offset(uint row) { |
|
1408 |
return cell_offset(bci_count_cell_index(row)); |
|
1409 |
} |
|
1410 |
static ByteSize bci_displacement_offset(uint row) { |
|
1411 |
return cell_offset(bci_displacement_cell_index(row)); |
|
1412 |
} |
|
1413 |
||
1414 |
// Specific initialization. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
10514
diff
changeset
|
1415 |
void post_initialize(BytecodeStream* stream, MethodData* mdo); |
1 | 1416 |
|
1417 |
#ifndef PRODUCT |
|
20702
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changeset
|
1418 |
void print_data_on(outputStream* st) const; |
1 | 1419 |
#endif |
1420 |
}; |
|
1421 |
||
1422 |
// BranchData |
|
1423 |
// |
|
1424 |
// A BranchData is used to access profiling data for a two-way branch. |
|
1425 |
// It consists of taken and not_taken counts as well as a data displacement |
|
1426 |
// for the taken case. |
|
1427 |
class BranchData : public JumpData { |
|
1428 |
protected: |
|
1429 |
enum { |
|
1430 |
not_taken_off_set = jump_cell_count, |
|
1431 |
branch_cell_count |
|
1432 |
}; |
|
1433 |
||
1434 |
void set_displacement(int displacement) { |
|
1435 |
set_int_at(displacement_off_set, displacement); |
|
1436 |
} |
|
1437 |
||
1438 |
public: |
|
1439 |
BranchData(DataLayout* layout) : JumpData(layout) { |
|
1440 |
assert(layout->tag() == DataLayout::branch_data_tag, "wrong type"); |
|
1441 |
} |
|
1442 |
||
20702
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diff
changeset
|
1443 |
virtual bool is_BranchData() const { return true; } |
1 | 1444 |
|
1445 |
static int static_cell_count() { |
|
1446 |
return branch_cell_count; |
|
1447 |
} |
|
1448 |
||
20702
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20282
diff
changeset
|
1449 |
virtual int cell_count() const { |
1 | 1450 |
return static_cell_count(); |
1451 |
} |
|
1452 |
||
1453 |
// Direct accessor |
|
20702
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diff
changeset
|
1454 |
uint not_taken() const { |
1 | 1455 |
return uint_at(not_taken_off_set); |
1456 |
} |
|
1457 |
||
10514
e229a19078cf
7071307: MethodHandle bimorphic inlining should consider the frequency
never
parents:
9446
diff
changeset
|
1458 |
void set_not_taken(uint cnt) { |
e229a19078cf
7071307: MethodHandle bimorphic inlining should consider the frequency
never
parents:
9446
diff
changeset
|
1459 |
set_uint_at(not_taken_off_set, cnt); |
e229a19078cf
7071307: MethodHandle bimorphic inlining should consider the frequency
never
parents:
9446
diff
changeset
|
1460 |
} |
e229a19078cf
7071307: MethodHandle bimorphic inlining should consider the frequency
never
parents:
9446
diff
changeset
|
1461 |
|
1 | 1462 |
uint inc_not_taken() { |
1463 |
uint cnt = not_taken() + 1; |
|
1464 |
// Did we wrap? Will compiler screw us?? |
|
1465 |
if (cnt == 0) cnt--; |
|
1466 |
set_uint_at(not_taken_off_set, cnt); |
|
1467 |
return cnt; |
|
1468 |
} |
|
1469 |
||
1470 |
// Code generation support |
|
1471 |
static ByteSize not_taken_offset() { |
|
1472 |
return cell_offset(not_taken_off_set); |
|
1473 |
} |
|
1474 |
static ByteSize branch_data_size() { |
|
1475 |
return cell_offset(branch_cell_count); |
|
1476 |
} |
|
1477 |
||
1478 |
// Specific initialization. |
|
13728
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coleenp
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diff
changeset
|
1479 |
void post_initialize(BytecodeStream* stream, MethodData* mdo); |
1 | 1480 |
|
1481 |
#ifndef PRODUCT |
|
20702
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changeset
|
1482 |
void print_data_on(outputStream* st) const; |
1 | 1483 |
#endif |
1484 |
}; |
|
1485 |
||
1486 |
// ArrayData |
|
1487 |
// |
|
1488 |
// A ArrayData is a base class for accessing profiling data which does |
|
1489 |
// not have a statically known size. It consists of an array length |
|
1490 |
// and an array start. |
|
1491 |
class ArrayData : public ProfileData { |
|
1492 |
protected: |
|
1493 |
friend class DataLayout; |
|
1494 |
||
1495 |
enum { |
|
1496 |
array_len_off_set, |
|
1497 |
array_start_off_set |
|
1498 |
}; |
|
1499 |
||
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|
1500 |
uint array_uint_at(int index) const { |
1 | 1501 |
int aindex = index + array_start_off_set; |
1502 |
return uint_at(aindex); |
|
1503 |
} |
|
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|
1504 |
int array_int_at(int index) const { |
1 | 1505 |
int aindex = index + array_start_off_set; |
1506 |
return int_at(aindex); |
|
1507 |
} |
|
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|
1508 |
oop array_oop_at(int index) const { |
1 | 1509 |
int aindex = index + array_start_off_set; |
1510 |
return oop_at(aindex); |
|
1511 |
} |
|
1512 |
void array_set_int_at(int index, int value) { |
|
1513 |
int aindex = index + array_start_off_set; |
|
1514 |
set_int_at(aindex, value); |
|
1515 |
} |
|
1516 |
||
1517 |
// Code generation support for subclasses. |
|
1518 |
static ByteSize array_element_offset(int index) { |
|
1519 |
return cell_offset(array_start_off_set + index); |
|
1520 |
} |
|
1521 |
||
1522 |
public: |
|
1523 |
ArrayData(DataLayout* layout) : ProfileData(layout) {} |
|
1524 |
||
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|
1525 |
virtual bool is_ArrayData() const { return true; } |
1 | 1526 |
|
1527 |
static int static_cell_count() { |
|
1528 |
return -1; |
|
1529 |
} |
|
1530 |
||
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|
1531 |
int array_len() const { |
1 | 1532 |
return int_at_unchecked(array_len_off_set); |
1533 |
} |
|
1534 |
||
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|
1535 |
virtual int cell_count() const { |
1 | 1536 |
return array_len() + 1; |
1537 |
} |
|
1538 |
||
1539 |
// Code generation support |
|
1540 |
static ByteSize array_len_offset() { |
|
1541 |
return cell_offset(array_len_off_set); |
|
1542 |
} |
|
1543 |
static ByteSize array_start_offset() { |
|
1544 |
return cell_offset(array_start_off_set); |
|
1545 |
} |
|
1546 |
}; |
|
1547 |
||
1548 |
// MultiBranchData |
|
1549 |
// |
|
1550 |
// A MultiBranchData is used to access profiling information for |
|
1551 |
// a multi-way branch (*switch bytecodes). It consists of a series |
|
1552 |
// of (count, displacement) pairs, which count the number of times each |
|
1553 |
// case was taken and specify the data displacment for each branch target. |
|
1554 |
class MultiBranchData : public ArrayData { |
|
1555 |
protected: |
|
1556 |
enum { |
|
1557 |
default_count_off_set, |
|
1558 |
default_disaplacement_off_set, |
|
1559 |
case_array_start |
|
1560 |
}; |
|
1561 |
enum { |
|
1562 |
relative_count_off_set, |
|
1563 |
relative_displacement_off_set, |
|
1564 |
per_case_cell_count |
|
1565 |
}; |
|
1566 |
||
1567 |
void set_default_displacement(int displacement) { |
|
1568 |
array_set_int_at(default_disaplacement_off_set, displacement); |
|
1569 |
} |
|
1570 |
void set_displacement_at(int index, int displacement) { |
|
1571 |
array_set_int_at(case_array_start + |
|
1572 |
index * per_case_cell_count + |
|
1573 |
relative_displacement_off_set, |
|
1574 |
displacement); |
|
1575 |
} |
|
1576 |
||
1577 |
public: |
|
1578 |
MultiBranchData(DataLayout* layout) : ArrayData(layout) { |
|
1579 |
assert(layout->tag() == DataLayout::multi_branch_data_tag, "wrong type"); |
|
1580 |
} |
|
1581 |
||
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|
1582 |
virtual bool is_MultiBranchData() const { return true; } |
1 | 1583 |
|
1584 |
static int compute_cell_count(BytecodeStream* stream); |
|
1585 |
||
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|
1586 |
int number_of_cases() const { |
1 | 1587 |
int alen = array_len() - 2; // get rid of default case here. |
1588 |
assert(alen % per_case_cell_count == 0, "must be even"); |
|
1589 |
return (alen / per_case_cell_count); |
|
1590 |
} |
|
1591 |
||
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|
1592 |
uint default_count() const { |
1 | 1593 |
return array_uint_at(default_count_off_set); |
1594 |
} |
|
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|
1595 |
int default_displacement() const { |
1 | 1596 |
return array_int_at(default_disaplacement_off_set); |
1597 |
} |
|
1598 |
||
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|
1599 |
uint count_at(int index) const { |
1 | 1600 |
return array_uint_at(case_array_start + |
1601 |
index * per_case_cell_count + |
|
1602 |
relative_count_off_set); |
|
1603 |
} |
|
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|
1604 |
int displacement_at(int index) const { |
1 | 1605 |
return array_int_at(case_array_start + |
1606 |
index * per_case_cell_count + |
|
1607 |
relative_displacement_off_set); |
|
1608 |
} |
|
1609 |
||
1610 |
// Code generation support |
|
1611 |
static ByteSize default_count_offset() { |
|
1612 |
return array_element_offset(default_count_off_set); |
|
1613 |
} |
|
1614 |
static ByteSize default_displacement_offset() { |
|
1615 |
return array_element_offset(default_disaplacement_off_set); |
|
1616 |
} |
|
1617 |
static ByteSize case_count_offset(int index) { |
|
1618 |
return case_array_offset() + |
|
1619 |
(per_case_size() * index) + |
|
1620 |
relative_count_offset(); |
|
1621 |
} |
|
1622 |
static ByteSize case_array_offset() { |
|
1623 |
return array_element_offset(case_array_start); |
|
1624 |
} |
|
1625 |
static ByteSize per_case_size() { |
|
1626 |
return in_ByteSize(per_case_cell_count) * cell_size; |
|
1627 |
} |
|
1628 |
static ByteSize relative_count_offset() { |
|
1629 |
return in_ByteSize(relative_count_off_set) * cell_size; |
|
1630 |
} |
|
1631 |
static ByteSize relative_displacement_offset() { |
|
1632 |
return in_ByteSize(relative_displacement_off_set) * cell_size; |
|
1633 |
} |
|
1634 |
||
1635 |
// Specific initialization. |
|
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|
1636 |
void post_initialize(BytecodeStream* stream, MethodData* mdo); |
1 | 1637 |
|
1638 |
#ifndef PRODUCT |
|
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|
1639 |
void print_data_on(outputStream* st) const; |
1 | 1640 |
#endif |
1641 |
}; |
|
1642 |
||
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|
1643 |
class ArgInfoData : public ArrayData { |
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|
1644 |
|
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|
1645 |
public: |
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|
1646 |
ArgInfoData(DataLayout* layout) : ArrayData(layout) { |
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|
1647 |
assert(layout->tag() == DataLayout::arg_info_data_tag, "wrong type"); |
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|
1648 |
} |
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diff
changeset
|
1649 |
|
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|
1650 |
virtual bool is_ArgInfoData() const { return true; } |
218
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changeset
|
1651 |
|
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diff
changeset
|
1652 |
|
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|
1653 |
int number_of_args() const { |
218
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|
1654 |
return array_len(); |
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diff
changeset
|
1655 |
} |
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diff
changeset
|
1656 |
|
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|
1657 |
uint arg_modified(int arg) const { |
218
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|
1658 |
return array_uint_at(arg); |
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diff
changeset
|
1659 |
} |
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diff
changeset
|
1660 |
|
a0e996680b05
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diff
changeset
|
1661 |
void set_arg_modified(int arg, uint val) { |
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changeset
|
1662 |
array_set_int_at(arg, val); |
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diff
changeset
|
1663 |
} |
a0e996680b05
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1
diff
changeset
|
1664 |
|
a0e996680b05
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diff
changeset
|
1665 |
#ifndef PRODUCT |
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|
1666 |
void print_data_on(outputStream* st) const; |
218
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diff
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|
1667 |
#endif |
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1
diff
changeset
|
1668 |
}; |
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diff
changeset
|
1669 |
|
21095
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changeset
|
1670 |
// ParametersTypeData |
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|
1671 |
// |
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changeset
|
1672 |
// A ParametersTypeData is used to access profiling information about |
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diff
changeset
|
1673 |
// types of parameters to a method |
1a04f7b3946e
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diff
changeset
|
1674 |
class ParametersTypeData : public ArrayData { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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20709
diff
changeset
|
1675 |
|
1a04f7b3946e
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diff
changeset
|
1676 |
private: |
1a04f7b3946e
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diff
changeset
|
1677 |
TypeStackSlotEntries _parameters; |
1a04f7b3946e
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diff
changeset
|
1678 |
|
1a04f7b3946e
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diff
changeset
|
1679 |
static int stack_slot_local_offset(int i) { |
1a04f7b3946e
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diff
changeset
|
1680 |
assert_profiling_enabled(); |
1a04f7b3946e
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parents:
20709
diff
changeset
|
1681 |
return array_start_off_set + TypeStackSlotEntries::stack_slot_local_offset(i); |
1a04f7b3946e
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diff
changeset
|
1682 |
} |
1a04f7b3946e
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20709
diff
changeset
|
1683 |
|
1a04f7b3946e
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diff
changeset
|
1684 |
static int type_local_offset(int i) { |
1a04f7b3946e
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diff
changeset
|
1685 |
assert_profiling_enabled(); |
1a04f7b3946e
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diff
changeset
|
1686 |
return array_start_off_set + TypeStackSlotEntries::type_local_offset(i); |
1a04f7b3946e
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diff
changeset
|
1687 |
} |
1a04f7b3946e
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diff
changeset
|
1688 |
|
1a04f7b3946e
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diff
changeset
|
1689 |
static bool profiling_enabled(); |
1a04f7b3946e
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diff
changeset
|
1690 |
static void assert_profiling_enabled() { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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20709
diff
changeset
|
1691 |
assert(profiling_enabled(), "method parameters profiling should be on"); |
1a04f7b3946e
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diff
changeset
|
1692 |
} |
1a04f7b3946e
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20709
diff
changeset
|
1693 |
|
1a04f7b3946e
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diff
changeset
|
1694 |
public: |
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changeset
|
1695 |
ParametersTypeData(DataLayout* layout) : ArrayData(layout), _parameters(1, number_of_parameters()) { |
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changeset
|
1696 |
assert(layout->tag() == DataLayout::parameters_type_data_tag, "wrong type"); |
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changeset
|
1697 |
// Some compilers (VC++) don't want this passed in member initialization list |
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changeset
|
1698 |
_parameters.set_profile_data(this); |
1a04f7b3946e
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changeset
|
1699 |
} |
1a04f7b3946e
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changeset
|
1700 |
|
1a04f7b3946e
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changeset
|
1701 |
static int compute_cell_count(Method* m); |
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changeset
|
1702 |
|
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changeset
|
1703 |
virtual bool is_ParametersTypeData() const { return true; } |
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changeset
|
1704 |
|
1a04f7b3946e
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changeset
|
1705 |
virtual void post_initialize(BytecodeStream* stream, MethodData* mdo); |
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changeset
|
1706 |
|
1a04f7b3946e
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changeset
|
1707 |
int number_of_parameters() const { |
1a04f7b3946e
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changeset
|
1708 |
return array_len() / TypeStackSlotEntries::per_arg_count(); |
1a04f7b3946e
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changeset
|
1709 |
} |
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changeset
|
1710 |
|
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changeset
|
1711 |
const TypeStackSlotEntries* parameters() const { return &_parameters; } |
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changeset
|
1712 |
|
1a04f7b3946e
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changeset
|
1713 |
uint stack_slot(int i) const { |
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changeset
|
1714 |
return _parameters.stack_slot(i); |
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changeset
|
1715 |
} |
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changeset
|
1716 |
|
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changeset
|
1717 |
void set_type(int i, Klass* k) { |
1a04f7b3946e
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|
1718 |
intptr_t current = _parameters.type(i); |
1a04f7b3946e
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|
1719 |
_parameters.set_type(i, TypeEntries::with_status((intptr_t)k, current)); |
1a04f7b3946e
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parents:
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changeset
|
1720 |
} |
1a04f7b3946e
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parents:
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diff
changeset
|
1721 |
|
1a04f7b3946e
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parents:
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diff
changeset
|
1722 |
virtual void clean_weak_klass_links(BoolObjectClosure* is_alive_closure) { |
1a04f7b3946e
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roland
parents:
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diff
changeset
|
1723 |
_parameters.clean_weak_klass_links(is_alive_closure); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1724 |
} |
1a04f7b3946e
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diff
changeset
|
1725 |
|
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1726 |
#ifndef PRODUCT |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1727 |
virtual void print_data_on(outputStream* st) const; |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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changeset
|
1728 |
#endif |
1a04f7b3946e
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diff
changeset
|
1729 |
|
1a04f7b3946e
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changeset
|
1730 |
static ByteSize stack_slot_offset(int i) { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
changeset
|
1731 |
return cell_offset(stack_slot_local_offset(i)); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1732 |
} |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
changeset
|
1733 |
|
1a04f7b3946e
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diff
changeset
|
1734 |
static ByteSize type_offset(int i) { |
1a04f7b3946e
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diff
changeset
|
1735 |
return cell_offset(type_local_offset(i)); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1736 |
} |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
1737 |
}; |
1a04f7b3946e
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changeset
|
1738 |
|
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|
1739 |
// MethodData* |
1 | 1740 |
// |
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|
1741 |
// A MethodData* holds information which has been collected about |
1 | 1742 |
// a method. Its layout looks like this: |
1743 |
// |
|
1744 |
// ----------------------------- |
|
1745 |
// | header | |
|
1746 |
// | klass | |
|
1747 |
// ----------------------------- |
|
1748 |
// | method | |
|
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|
1749 |
// | size of the MethodData* | |
1 | 1750 |
// ----------------------------- |
1751 |
// | Data entries... | |
|
1752 |
// | (variable size) | |
|
1753 |
// | | |
|
1754 |
// . . |
|
1755 |
// . . |
|
1756 |
// . . |
|
1757 |
// | | |
|
1758 |
// ----------------------------- |
|
1759 |
// |
|
1760 |
// The data entry area is a heterogeneous array of DataLayouts. Each |
|
1761 |
// DataLayout in the array corresponds to a specific bytecode in the |
|
1762 |
// method. The entries in the array are sorted by the corresponding |
|
1763 |
// bytecode. Access to the data is via resource-allocated ProfileData, |
|
1764 |
// which point to the underlying blocks of DataLayout structures. |
|
1765 |
// |
|
1766 |
// During interpretation, if profiling in enabled, the interpreter |
|
1767 |
// maintains a method data pointer (mdp), which points at the entry |
|
1768 |
// in the array corresponding to the current bci. In the course of |
|
1769 |
// intepretation, when a bytecode is encountered that has profile data |
|
1770 |
// associated with it, the entry pointed to by mdp is updated, then the |
|
1771 |
// mdp is adjusted to point to the next appropriate DataLayout. If mdp |
|
1772 |
// is NULL to begin with, the interpreter assumes that the current method |
|
1773 |
// is not (yet) being profiled. |
|
1774 |
// |
|
13728
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|
1775 |
// In MethodData* parlance, "dp" is a "data pointer", the actual address |
1 | 1776 |
// of a DataLayout element. A "di" is a "data index", the offset in bytes |
1777 |
// from the base of the data entry array. A "displacement" is the byte offset |
|
1778 |
// in certain ProfileData objects that indicate the amount the mdp must be |
|
1779 |
// adjusted in the event of a change in control flow. |
|
1780 |
// |
|
1781 |
||
13728
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|
1782 |
class MethodData : public Metadata { |
1 | 1783 |
friend class VMStructs; |
1784 |
private: |
|
1785 |
friend class ProfileData; |
|
1786 |
||
13728
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|
1787 |
// Back pointer to the Method* |
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|
1788 |
Method* _method; |
1 | 1789 |
|
1790 |
// Size of this oop in bytes |
|
1791 |
int _size; |
|
1792 |
||
1793 |
// Cached hint for bci_to_dp and bci_to_data |
|
1794 |
int _hint_di; |
|
1795 |
||
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|
1796 |
MethodData(methodHandle method, int size, TRAPS); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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|
1797 |
public: |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
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|
1798 |
static MethodData* allocate(ClassLoaderData* loader_data, methodHandle method, TRAPS); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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|
1799 |
MethodData() {}; // For ciMethodData |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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|
1800 |
|
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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|
1801 |
bool is_methodData() const volatile { return true; } |
882756847a04
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|
1802 |
|
1 | 1803 |
// Whole-method sticky bits and flags |
1804 |
enum { |
|
9446 | 1805 |
_trap_hist_limit = 17, // decoupled from Deoptimization::Reason_LIMIT |
1 | 1806 |
_trap_hist_mask = max_jubyte, |
1807 |
_extra_data_count = 4 // extra DataLayout headers, for trap history |
|
1808 |
}; // Public flag values |
|
1809 |
private: |
|
1810 |
uint _nof_decompiles; // count of all nmethod removals |
|
1811 |
uint _nof_overflow_recompiles; // recompile count, excluding recomp. bits |
|
1812 |
uint _nof_overflow_traps; // trap count, excluding _trap_hist |
|
1813 |
union { |
|
1814 |
intptr_t _align; |
|
1815 |
u1 _array[_trap_hist_limit]; |
|
1816 |
} _trap_hist; |
|
1817 |
||
1818 |
// Support for interprocedural escape analysis, from Thomas Kotzmann. |
|
1819 |
intx _eflags; // flags on escape information |
|
1820 |
intx _arg_local; // bit set of non-escaping arguments |
|
1821 |
intx _arg_stack; // bit set of stack-allocatable arguments |
|
1822 |
intx _arg_returned; // bit set of returned arguments |
|
1823 |
||
6453 | 1824 |
int _creation_mileage; // method mileage at MDO creation |
1825 |
||
1826 |
// How many invocations has this MDO seen? |
|
1827 |
// These counters are used to determine the exact age of MDO. |
|
1828 |
// We need those because in tiered a method can be concurrently |
|
1829 |
// executed at different levels. |
|
1830 |
InvocationCounter _invocation_counter; |
|
1831 |
// Same for backedges. |
|
1832 |
InvocationCounter _backedge_counter; |
|
8322 | 1833 |
// Counter values at the time profiling started. |
1834 |
int _invocation_counter_start; |
|
1835 |
int _backedge_counter_start; |
|
6453 | 1836 |
// Number of loops and blocks is computed when compiling the first |
1837 |
// time with C1. It is used to determine if method is trivial. |
|
1838 |
short _num_loops; |
|
1839 |
short _num_blocks; |
|
1840 |
// Highest compile level this method has ever seen. |
|
1841 |
u1 _highest_comp_level; |
|
1842 |
// Same for OSR level |
|
1843 |
u1 _highest_osr_comp_level; |
|
1844 |
// Does this method contain anything worth profiling? |
|
1845 |
bool _would_profile; |
|
1 | 1846 |
|
1847 |
// Size of _data array in bytes. (Excludes header and extra_data fields.) |
|
1848 |
int _data_size; |
|
1849 |
||
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|
1850 |
// data index for the area dedicated to parameters. -1 if no |
1a04f7b3946e
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|
1851 |
// parameter profiling. |
1a04f7b3946e
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|
1852 |
int _parameters_type_data_di; |
1a04f7b3946e
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|
1853 |
|
1 | 1854 |
// Beginning of the data entries |
1855 |
intptr_t _data[1]; |
|
1856 |
||
1857 |
// Helper for size computation |
|
1858 |
static int compute_data_size(BytecodeStream* stream); |
|
1859 |
static int bytecode_cell_count(Bytecodes::Code code); |
|
1860 |
enum { no_profile_data = -1, variable_cell_count = -2 }; |
|
1861 |
||
1862 |
// Helper for initialization |
|
13728
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|
1863 |
DataLayout* data_layout_at(int data_index) const { |
1 | 1864 |
assert(data_index % sizeof(intptr_t) == 0, "unaligned"); |
1865 |
return (DataLayout*) (((address)_data) + data_index); |
|
1866 |
} |
|
1867 |
||
1868 |
// Initialize an individual data segment. Returns the size of |
|
1869 |
// the segment in bytes. |
|
1870 |
int initialize_data(BytecodeStream* stream, int data_index); |
|
1871 |
||
1872 |
// Helper for data_at |
|
13728
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|
1873 |
DataLayout* limit_data_position() const { |
1 | 1874 |
return (DataLayout*)((address)data_base() + _data_size); |
1875 |
} |
|
13728
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|
1876 |
bool out_of_bounds(int data_index) const { |
1 | 1877 |
return data_index >= data_size(); |
1878 |
} |
|
1879 |
||
1880 |
// Give each of the data entries a chance to perform specific |
|
1881 |
// data initialization. |
|
1882 |
void post_initialize(BytecodeStream* stream); |
|
1883 |
||
1884 |
// hint accessors |
|
1885 |
int hint_di() const { return _hint_di; } |
|
1886 |
void set_hint_di(int di) { |
|
1887 |
assert(!out_of_bounds(di), "hint_di out of bounds"); |
|
1888 |
_hint_di = di; |
|
1889 |
} |
|
1890 |
ProfileData* data_before(int bci) { |
|
1891 |
// avoid SEGV on this edge case |
|
1892 |
if (data_size() == 0) |
|
1893 |
return NULL; |
|
1894 |
int hint = hint_di(); |
|
1895 |
if (data_layout_at(hint)->bci() <= bci) |
|
1896 |
return data_at(hint); |
|
1897 |
return first_data(); |
|
1898 |
} |
|
1899 |
||
1900 |
// What is the index of the first data entry? |
|
13728
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|
1901 |
int first_di() const { return 0; } |
1 | 1902 |
|
1903 |
// Find or create an extra ProfileData: |
|
1904 |
ProfileData* bci_to_extra_data(int bci, bool create_if_missing); |
|
1905 |
||
218
a0e996680b05
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|
1906 |
// return the argument info cell |
a0e996680b05
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parents:
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|
1907 |
ArgInfoData *arg_info(); |
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|
1908 |
|
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|
1909 |
enum { |
bbe0fcde6e13
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diff
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|
1910 |
no_type_profile = 0, |
bbe0fcde6e13
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changeset
|
1911 |
type_profile_jsr292 = 1, |
bbe0fcde6e13
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|
1912 |
type_profile_all = 2 |
bbe0fcde6e13
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|
1913 |
}; |
bbe0fcde6e13
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|
1914 |
|
bbe0fcde6e13
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changeset
|
1915 |
static bool profile_jsr292(methodHandle m, int bci); |
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|
1916 |
static int profile_arguments_flag(); |
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changeset
|
1917 |
static bool profile_arguments_jsr292_only(); |
bbe0fcde6e13
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|
1918 |
static bool profile_all_arguments(); |
bbe0fcde6e13
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|
1919 |
static bool profile_arguments_for_invoke(methodHandle m, int bci); |
20709
034be898bf04
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diff
changeset
|
1920 |
static int profile_return_flag(); |
034be898bf04
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20702
diff
changeset
|
1921 |
static bool profile_all_return(); |
034be898bf04
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changeset
|
1922 |
static bool profile_return_for_invoke(methodHandle m, int bci); |
21095
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|
1923 |
static int profile_parameters_flag(); |
1a04f7b3946e
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|
1924 |
static bool profile_parameters_jsr292_only(); |
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|
1925 |
static bool profile_all_parameters(); |
20702
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|
1926 |
|
1 | 1927 |
public: |
1928 |
static int header_size() { |
|
13728
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|
1929 |
return sizeof(MethodData)/wordSize; |
1 | 1930 |
} |
1931 |
||
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|
1932 |
// Compute the size of a MethodData* before it is created. |
1 | 1933 |
static int compute_allocation_size_in_bytes(methodHandle method); |
1934 |
static int compute_allocation_size_in_words(methodHandle method); |
|
1935 |
static int compute_extra_data_count(int data_size, int empty_bc_count); |
|
1936 |
||
1937 |
// Determine if a given bytecode can have profile information. |
|
1938 |
static bool bytecode_has_profile(Bytecodes::Code code) { |
|
1939 |
return bytecode_cell_count(code) != no_profile_data; |
|
1940 |
} |
|
1941 |
||
16689
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|
1942 |
// reset into original state |
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|
1943 |
void init(); |
1 | 1944 |
|
1945 |
// My size |
|
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|
1946 |
int size_in_bytes() const { return _size; } |
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|
1947 |
int size() const { return align_object_size(align_size_up(_size, BytesPerWord)/BytesPerWord); } |
15437 | 1948 |
#if INCLUDE_SERVICES |
1949 |
void collect_statistics(KlassSizeStats *sz) const; |
|
1950 |
#endif |
|
1 | 1951 |
|
1952 |
int creation_mileage() const { return _creation_mileage; } |
|
1953 |
void set_creation_mileage(int x) { _creation_mileage = x; } |
|
6453 | 1954 |
|
1955 |
int invocation_count() { |
|
1956 |
if (invocation_counter()->carry()) { |
|
1957 |
return InvocationCounter::count_limit; |
|
1958 |
} |
|
1959 |
return invocation_counter()->count(); |
|
1960 |
} |
|
1961 |
int backedge_count() { |
|
1962 |
if (backedge_counter()->carry()) { |
|
1963 |
return InvocationCounter::count_limit; |
|
1964 |
} |
|
1965 |
return backedge_counter()->count(); |
|
1966 |
} |
|
1967 |
||
8322 | 1968 |
int invocation_count_start() { |
1969 |
if (invocation_counter()->carry()) { |
|
1970 |
return 0; |
|
1971 |
} |
|
1972 |
return _invocation_counter_start; |
|
1973 |
} |
|
1974 |
||
1975 |
int backedge_count_start() { |
|
1976 |
if (backedge_counter()->carry()) { |
|
1977 |
return 0; |
|
1978 |
} |
|
1979 |
return _backedge_counter_start; |
|
1980 |
} |
|
1981 |
||
1982 |
int invocation_count_delta() { return invocation_count() - invocation_count_start(); } |
|
1983 |
int backedge_count_delta() { return backedge_count() - backedge_count_start(); } |
|
1984 |
||
1985 |
void reset_start_counters() { |
|
1986 |
_invocation_counter_start = invocation_count(); |
|
1987 |
_backedge_counter_start = backedge_count(); |
|
1988 |
} |
|
1989 |
||
6453 | 1990 |
InvocationCounter* invocation_counter() { return &_invocation_counter; } |
1991 |
InvocationCounter* backedge_counter() { return &_backedge_counter; } |
|
1992 |
||
1993 |
void set_would_profile(bool p) { _would_profile = p; } |
|
1994 |
bool would_profile() const { return _would_profile; } |
|
1995 |
||
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|
1996 |
int highest_comp_level() const { return _highest_comp_level; } |
6453 | 1997 |
void set_highest_comp_level(int level) { _highest_comp_level = level; } |
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|
1998 |
int highest_osr_comp_level() const { return _highest_osr_comp_level; } |
6453 | 1999 |
void set_highest_osr_comp_level(int level) { _highest_osr_comp_level = level; } |
2000 |
||
2001 |
int num_loops() const { return _num_loops; } |
|
2002 |
void set_num_loops(int n) { _num_loops = n; } |
|
2003 |
int num_blocks() const { return _num_blocks; } |
|
2004 |
void set_num_blocks(int n) { _num_blocks = n; } |
|
2005 |
||
1 | 2006 |
bool is_mature() const; // consult mileage and ProfileMaturityPercentage |
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|
2007 |
static int mileage_of(Method* m); |
1 | 2008 |
|
2009 |
// Support for interprocedural escape analysis, from Thomas Kotzmann. |
|
2010 |
enum EscapeFlag { |
|
2011 |
estimated = 1 << 0, |
|
251
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|
2012 |
return_local = 1 << 1, |
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|
2013 |
return_allocated = 1 << 2, |
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|
2014 |
allocated_escapes = 1 << 3, |
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|
2015 |
unknown_modified = 1 << 4 |
1 | 2016 |
}; |
2017 |
||
2018 |
intx eflags() { return _eflags; } |
|
2019 |
intx arg_local() { return _arg_local; } |
|
2020 |
intx arg_stack() { return _arg_stack; } |
|
2021 |
intx arg_returned() { return _arg_returned; } |
|
218
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|
2022 |
uint arg_modified(int a) { ArgInfoData *aid = arg_info(); |
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|
2023 |
assert(aid != NULL, "arg_info must be not null"); |
218
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|
2024 |
assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
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|
2025 |
return aid->arg_modified(a); } |
1 | 2026 |
|
2027 |
void set_eflags(intx v) { _eflags = v; } |
|
2028 |
void set_arg_local(intx v) { _arg_local = v; } |
|
2029 |
void set_arg_stack(intx v) { _arg_stack = v; } |
|
2030 |
void set_arg_returned(intx v) { _arg_returned = v; } |
|
218
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|
2031 |
void set_arg_modified(int a, uint v) { ArgInfoData *aid = arg_info(); |
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|
2032 |
assert(aid != NULL, "arg_info must be not null"); |
218
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|
2033 |
assert(a >= 0 && a < aid->number_of_args(), "valid argument number"); |
a0e996680b05
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|
2034 |
aid->set_arg_modified(a, v); } |
1 | 2035 |
|
2036 |
void clear_escape_info() { _eflags = _arg_local = _arg_stack = _arg_returned = 0; } |
|
2037 |
||
2038 |
// Location and size of data area |
|
2039 |
address data_base() const { |
|
2040 |
return (address) _data; |
|
2041 |
} |
|
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|
2042 |
int data_size() const { |
1 | 2043 |
return _data_size; |
2044 |
} |
|
2045 |
||
2046 |
// Accessors |
|
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|
2047 |
Method* method() const { return _method; } |
1 | 2048 |
|
2049 |
// Get the data at an arbitrary (sort of) data index. |
|
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|
2050 |
ProfileData* data_at(int data_index) const; |
1 | 2051 |
|
2052 |
// Walk through the data in order. |
|
13728
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|
2053 |
ProfileData* first_data() const { return data_at(first_di()); } |
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|
2054 |
ProfileData* next_data(ProfileData* current) const; |
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|
2055 |
bool is_valid(ProfileData* current) const { return current != NULL; } |
1 | 2056 |
|
2057 |
// Convert a dp (data pointer) to a di (data index). |
|
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|
2058 |
int dp_to_di(address dp) const { |
1 | 2059 |
return dp - ((address)_data); |
2060 |
} |
|
2061 |
||
2062 |
address di_to_dp(int di) { |
|
2063 |
return (address)data_layout_at(di); |
|
2064 |
} |
|
2065 |
||
2066 |
// bci to di/dp conversion. |
|
2067 |
address bci_to_dp(int bci); |
|
2068 |
int bci_to_di(int bci) { |
|
2069 |
return dp_to_di(bci_to_dp(bci)); |
|
2070 |
} |
|
2071 |
||
2072 |
// Get the data at an arbitrary bci, or NULL if there is none. |
|
2073 |
ProfileData* bci_to_data(int bci); |
|
2074 |
||
2075 |
// Same, but try to create an extra_data record if one is needed: |
|
2076 |
ProfileData* allocate_bci_to_data(int bci) { |
|
2077 |
ProfileData* data = bci_to_data(bci); |
|
2078 |
return (data != NULL) ? data : bci_to_extra_data(bci, true); |
|
2079 |
} |
|
2080 |
||
2081 |
// Add a handful of extra data records, for trap tracking. |
|
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|
2082 |
DataLayout* extra_data_base() const { return limit_data_position(); } |
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|
2083 |
DataLayout* extra_data_limit() const { return (DataLayout*)((address)this + size_in_bytes()); } |
882756847a04
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|
2084 |
int extra_data_size() const { return (address)extra_data_limit() |
1 | 2085 |
- (address)extra_data_base(); } |
2086 |
static DataLayout* next_extra(DataLayout* dp) { return (DataLayout*)((address)dp + in_bytes(DataLayout::cell_offset(0))); } |
|
2087 |
||
2088 |
// Return (uint)-1 for overflow. |
|
2089 |
uint trap_count(int reason) const { |
|
2090 |
assert((uint)reason < _trap_hist_limit, "oob"); |
|
2091 |
return (int)((_trap_hist._array[reason]+1) & _trap_hist_mask) - 1; |
|
2092 |
} |
|
2093 |
// For loops: |
|
2094 |
static uint trap_reason_limit() { return _trap_hist_limit; } |
|
2095 |
static uint trap_count_limit() { return _trap_hist_mask; } |
|
2096 |
uint inc_trap_count(int reason) { |
|
2097 |
// Count another trap, anywhere in this method. |
|
2098 |
assert(reason >= 0, "must be single trap"); |
|
2099 |
if ((uint)reason < _trap_hist_limit) { |
|
2100 |
uint cnt1 = 1 + _trap_hist._array[reason]; |
|
2101 |
if ((cnt1 & _trap_hist_mask) != 0) { // if no counter overflow... |
|
2102 |
_trap_hist._array[reason] = cnt1; |
|
2103 |
return cnt1; |
|
2104 |
} else { |
|
2105 |
return _trap_hist_mask + (++_nof_overflow_traps); |
|
2106 |
} |
|
2107 |
} else { |
|
2108 |
// Could not represent the count in the histogram. |
|
2109 |
return (++_nof_overflow_traps); |
|
2110 |
} |
|
2111 |
} |
|
2112 |
||
2113 |
uint overflow_trap_count() const { |
|
2114 |
return _nof_overflow_traps; |
|
2115 |
} |
|
2116 |
uint overflow_recompile_count() const { |
|
2117 |
return _nof_overflow_recompiles; |
|
2118 |
} |
|
2119 |
void inc_overflow_recompile_count() { |
|
2120 |
_nof_overflow_recompiles += 1; |
|
2121 |
} |
|
2122 |
uint decompile_count() const { |
|
2123 |
return _nof_decompiles; |
|
2124 |
} |
|
2125 |
void inc_decompile_count() { |
|
2126 |
_nof_decompiles += 1; |
|
4754
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|
2127 |
if (decompile_count() > (uint)PerMethodRecompilationCutoff) { |
15479 | 2128 |
method()->set_not_compilable(CompLevel_full_optimization, true, "decompile_count > PerMethodRecompilationCutoff"); |
4754
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|
2129 |
} |
1 | 2130 |
} |
2131 |
||
21095
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|
2132 |
// Return pointer to area dedicated to parameters in MDO |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
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|
2133 |
ParametersTypeData* parameters_type_data() const { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
2134 |
return _parameters_type_data_di != -1 ? data_layout_at(_parameters_type_data_di)->data_in()->as_ParametersTypeData() : NULL; |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
changeset
|
2135 |
} |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
changeset
|
2136 |
|
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
changeset
|
2137 |
int parameters_type_data_di() const { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
2138 |
assert(_parameters_type_data_di != -1, "no args type data"); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
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diff
changeset
|
2139 |
return _parameters_type_data_di; |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
changeset
|
2140 |
} |
1a04f7b3946e
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changeset
|
2141 |
|
1 | 2142 |
// Support for code generation |
2143 |
static ByteSize data_offset() { |
|
13728
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|
2144 |
return byte_offset_of(MethodData, _data[0]); |
1 | 2145 |
} |
2146 |
||
6453 | 2147 |
static ByteSize invocation_counter_offset() { |
13728
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|
2148 |
return byte_offset_of(MethodData, _invocation_counter); |
6453 | 2149 |
} |
2150 |
static ByteSize backedge_counter_offset() { |
|
13728
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changeset
|
2151 |
return byte_offset_of(MethodData, _backedge_counter); |
6453 | 2152 |
} |
2153 |
||
21095
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8026251: New type profiling points: parameters to methods
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diff
changeset
|
2154 |
static ByteSize parameters_type_data_di_offset() { |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
2155 |
return byte_offset_of(MethodData, _parameters_type_data_di); |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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parents:
20709
diff
changeset
|
2156 |
} |
1a04f7b3946e
8026251: New type profiling points: parameters to methods
roland
parents:
20709
diff
changeset
|
2157 |
|
13728
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|
2158 |
// Deallocation support - no pointer fields to deallocate |
882756847a04
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|
2159 |
void deallocate_contents(ClassLoaderData* loader_data) {} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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|
2160 |
|
1 | 2161 |
// GC support |
13728
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|
2162 |
void set_size(int object_size_in_bytes) { _size = object_size_in_bytes; } |
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|
2163 |
|
882756847a04
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|
2164 |
// Printing |
882756847a04
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|
2165 |
#ifndef PRODUCT |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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|
2166 |
void print_on (outputStream* st) const; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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|
2167 |
#endif |
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6964458: Reimplement class meta-data storage to use native memory
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|
2168 |
void print_value_on(outputStream* st) const; |
1 | 2169 |
|
2170 |
#ifndef PRODUCT |
|
2171 |
// printing support for method data |
|
13728
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|
2172 |
void print_data_on(outputStream* st) const; |
1 | 2173 |
#endif |
2174 |
||
13728
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|
2175 |
const char* internal_name() const { return "{method data}"; } |
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|
2176 |
|
1 | 2177 |
// verification |
13728
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|
2178 |
void verify_on(outputStream* st); |
1 | 2179 |
void verify_data_on(outputStream* st); |
20702
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|
2180 |
|
21095
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diff
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|
2181 |
static bool profile_parameters_for_method(methodHandle m); |
20702
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8023657: New type profiling points: arguments to call
roland
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diff
changeset
|
2182 |
static bool profile_arguments(); |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
roland
parents:
20702
diff
changeset
|
2183 |
static bool profile_return(); |
21095
1a04f7b3946e
8026251: New type profiling points: parameters to methods
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diff
changeset
|
2184 |
static bool profile_parameters(); |
20709
034be898bf04
8026054: New type profiling points: type of return values at calls
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20702
diff
changeset
|
2185 |
static bool profile_return_jsr292_only(); |
1 | 2186 |
}; |
7397 | 2187 |
|
2188 |
#endif // SHARE_VM_OOPS_METHODDATAOOP_HPP |