author | xdono |
Wed, 02 Jul 2008 12:55:16 -0700 | |
changeset 670 | ddf3e9583f2f |
parent 218 | a0e996680b05 |
child 2570 | ecc7862946d4 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright 2000-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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# include "incls/_precompiled.incl" |
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# include "incls/_methodDataOop.cpp.incl" |
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// ================================================================== |
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// DataLayout |
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// |
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// Overlay for generic profiling data. |
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// Some types of data layouts need a length field. |
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bool DataLayout::needs_array_len(u1 tag) { |
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return (tag == multi_branch_data_tag) || (tag == arg_info_data_tag); |
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} |
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// Perform generic initialization of the data. More specific |
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// initialization occurs in overrides of ProfileData::post_initialize. |
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void DataLayout::initialize(u1 tag, u2 bci, int cell_count) { |
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_header._bits = (intptr_t)0; |
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_header._struct._tag = tag; |
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_header._struct._bci = bci; |
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for (int i = 0; i < cell_count; i++) { |
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set_cell_at(i, (intptr_t)0); |
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} |
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if (needs_array_len(tag)) { |
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set_cell_at(ArrayData::array_len_off_set, cell_count - 1); // -1 for header. |
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} |
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} |
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// ================================================================== |
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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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// Constructor for invalid ProfileData. |
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ProfileData::ProfileData() { |
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_data = NULL; |
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} |
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#ifndef PRODUCT |
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void ProfileData::print_shared(outputStream* st, const char* name) { |
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st->print("bci: %d", bci()); |
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st->fill_to(tab_width_one); |
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st->print("%s", name); |
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tab(st); |
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int trap = trap_state(); |
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if (trap != 0) { |
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char buf[100]; |
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st->print("trap(%s) ", Deoptimization::format_trap_state(buf, sizeof(buf), trap)); |
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} |
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int flags = data()->flags(); |
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if (flags != 0) |
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st->print("flags(%d) ", flags); |
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} |
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void ProfileData::tab(outputStream* st) { |
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st->fill_to(tab_width_two); |
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} |
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#endif // !PRODUCT |
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// ================================================================== |
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// BitData |
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// |
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// A BitData corresponds to a one-bit flag. This is used to indicate |
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// whether a checkcast bytecode has seen a null value. |
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#ifndef PRODUCT |
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void BitData::print_data_on(outputStream* st) { |
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print_shared(st, "BitData"); |
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} |
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#endif // !PRODUCT |
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// ================================================================== |
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// CounterData |
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// |
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// A CounterData corresponds to a simple counter. |
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#ifndef PRODUCT |
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void CounterData::print_data_on(outputStream* st) { |
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print_shared(st, "CounterData"); |
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st->print_cr("count(%u)", count()); |
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} |
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#endif // !PRODUCT |
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// ================================================================== |
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// JumpData |
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// |
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// A JumpData is used to access profiling information for a direct |
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// branch. It is a counter, used for counting the number of branches, |
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// plus a data displacement, used for realigning the data pointer to |
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// the corresponding target bci. |
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void JumpData::post_initialize(BytecodeStream* stream, methodDataOop mdo) { |
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assert(stream->bci() == bci(), "wrong pos"); |
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int target; |
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Bytecodes::Code c = stream->code(); |
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if (c == Bytecodes::_goto_w || c == Bytecodes::_jsr_w) { |
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target = stream->dest_w(); |
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} else { |
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target = stream->dest(); |
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} |
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int my_di = mdo->dp_to_di(dp()); |
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int target_di = mdo->bci_to_di(target); |
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int offset = target_di - my_di; |
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set_displacement(offset); |
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} |
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#ifndef PRODUCT |
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void JumpData::print_data_on(outputStream* st) { |
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print_shared(st, "JumpData"); |
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st->print_cr("taken(%u) displacement(%d)", taken(), displacement()); |
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} |
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#endif // !PRODUCT |
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// ================================================================== |
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// ReceiverTypeData |
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// |
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// A ReceiverTypeData is used to access profiling information about a |
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// dynamic type check. It consists of a counter which counts the total times |
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// that the check is reached, and a series of (klassOop, count) pairs |
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// which are used to store a type profile for the receiver of the check. |
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void ReceiverTypeData::follow_contents() { |
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for (uint row = 0; row < row_limit(); row++) { |
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if (receiver(row) != NULL) { |
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MarkSweep::mark_and_push(adr_receiver(row)); |
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} |
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} |
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} |
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#ifndef SERIALGC |
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void ReceiverTypeData::follow_contents(ParCompactionManager* cm) { |
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for (uint row = 0; row < row_limit(); row++) { |
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if (receiver(row) != NULL) { |
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PSParallelCompact::mark_and_push(cm, adr_receiver(row)); |
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} |
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} |
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} |
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#endif // SERIALGC |
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void ReceiverTypeData::oop_iterate(OopClosure* blk) { |
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for (uint row = 0; row < row_limit(); row++) { |
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if (receiver(row) != NULL) { |
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blk->do_oop(adr_receiver(row)); |
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} |
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} |
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} |
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void ReceiverTypeData::oop_iterate_m(OopClosure* blk, MemRegion mr) { |
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for (uint row = 0; row < row_limit(); row++) { |
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if (receiver(row) != NULL) { |
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oop* adr = adr_receiver(row); |
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if (mr.contains(adr)) { |
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blk->do_oop(adr); |
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} |
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} |
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} |
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} |
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void ReceiverTypeData::adjust_pointers() { |
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for (uint row = 0; row < row_limit(); row++) { |
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if (receiver(row) != NULL) { |
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MarkSweep::adjust_pointer(adr_receiver(row)); |
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} |
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} |
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} |
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#ifndef SERIALGC |
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void ReceiverTypeData::update_pointers() { |
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for (uint row = 0; row < row_limit(); row++) { |
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if (receiver_unchecked(row) != NULL) { |
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PSParallelCompact::adjust_pointer(adr_receiver(row)); |
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} |
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} |
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} |
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void ReceiverTypeData::update_pointers(HeapWord* beg_addr, HeapWord* end_addr) { |
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// The loop bounds could be computed based on beg_addr/end_addr and the |
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// boundary test hoisted outside the loop (see klassVTable for an example); |
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// however, row_limit() is small enough (2) to make that less efficient. |
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for (uint row = 0; row < row_limit(); row++) { |
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if (receiver_unchecked(row) != NULL) { |
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PSParallelCompact::adjust_pointer(adr_receiver(row), beg_addr, end_addr); |
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} |
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} |
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} |
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#endif // SERIALGC |
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#ifndef PRODUCT |
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void ReceiverTypeData::print_receiver_data_on(outputStream* st) { |
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uint row; |
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int entries = 0; |
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for (row = 0; row < row_limit(); row++) { |
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if (receiver(row) != NULL) entries++; |
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} |
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st->print_cr("count(%u) entries(%u)", count(), entries); |
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for (row = 0; row < row_limit(); row++) { |
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if (receiver(row) != NULL) { |
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tab(st); |
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receiver(row)->print_value_on(st); |
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st->print_cr("(%u)", receiver_count(row)); |
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} |
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} |
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} |
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void ReceiverTypeData::print_data_on(outputStream* st) { |
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print_shared(st, "ReceiverTypeData"); |
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print_receiver_data_on(st); |
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} |
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void VirtualCallData::print_data_on(outputStream* st) { |
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print_shared(st, "VirtualCallData"); |
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print_receiver_data_on(st); |
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} |
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#endif // !PRODUCT |
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// ================================================================== |
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// RetData |
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// |
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// A RetData is used to access profiling information for a ret bytecode. |
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// It is composed of a count of the number of times that the ret has |
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// been executed, followed by a series of triples of the form |
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// (bci, count, di) which count the number of times that some bci was the |
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// target of the ret and cache a corresponding displacement. |
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void RetData::post_initialize(BytecodeStream* stream, methodDataOop mdo) { |
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for (uint row = 0; row < row_limit(); row++) { |
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set_bci_displacement(row, -1); |
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set_bci(row, no_bci); |
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} |
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// release so other threads see a consistent state. bci is used as |
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// a valid flag for bci_displacement. |
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OrderAccess::release(); |
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} |
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// This routine needs to atomically update the RetData structure, so the |
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// caller needs to hold the RetData_lock before it gets here. Since taking |
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// the lock can block (and allow GC) and since RetData is a ProfileData is a |
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// wrapper around a derived oop, taking the lock in _this_ method will |
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// basically cause the 'this' pointer's _data field to contain junk after the |
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// lock. We require the caller to take the lock before making the ProfileData |
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// structure. Currently the only caller is InterpreterRuntime::update_mdp_for_ret |
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address RetData::fixup_ret(int return_bci, methodDataHandle h_mdo) { |
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// First find the mdp which corresponds to the return bci. |
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address mdp = h_mdo->bci_to_dp(return_bci); |
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// Now check to see if any of the cache slots are open. |
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for (uint row = 0; row < row_limit(); row++) { |
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if (bci(row) == no_bci) { |
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set_bci_displacement(row, mdp - dp()); |
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set_bci_count(row, DataLayout::counter_increment); |
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// Barrier to ensure displacement is written before the bci; allows |
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// the interpreter to read displacement without fear of race condition. |
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release_set_bci(row, return_bci); |
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break; |
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} |
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} |
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return mdp; |
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} |
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#ifndef PRODUCT |
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void RetData::print_data_on(outputStream* st) { |
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print_shared(st, "RetData"); |
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uint row; |
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int entries = 0; |
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for (row = 0; row < row_limit(); row++) { |
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if (bci(row) != no_bci) entries++; |
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} |
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st->print_cr("count(%u) entries(%u)", count(), entries); |
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for (row = 0; row < row_limit(); row++) { |
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if (bci(row) != no_bci) { |
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tab(st); |
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st->print_cr("bci(%d: count(%u) displacement(%d))", |
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bci(row), bci_count(row), bci_displacement(row)); |
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} |
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} |
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} |
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#endif // !PRODUCT |
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// ================================================================== |
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// BranchData |
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// |
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// A BranchData is used to access profiling data for a two-way branch. |
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// It consists of taken and not_taken counts as well as a data displacement |
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// for the taken case. |
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void BranchData::post_initialize(BytecodeStream* stream, methodDataOop mdo) { |
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assert(stream->bci() == bci(), "wrong pos"); |
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int target = stream->dest(); |
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int my_di = mdo->dp_to_di(dp()); |
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int target_di = mdo->bci_to_di(target); |
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int offset = target_di - my_di; |
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set_displacement(offset); |
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} |
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#ifndef PRODUCT |
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void BranchData::print_data_on(outputStream* st) { |
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print_shared(st, "BranchData"); |
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st->print_cr("taken(%u) displacement(%d)", |
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taken(), displacement()); |
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tab(st); |
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st->print_cr("not taken(%u)", not_taken()); |
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} |
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#endif |
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// ================================================================== |
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// MultiBranchData |
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// |
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// A MultiBranchData is used to access profiling information for |
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// a multi-way branch (*switch bytecodes). It consists of a series |
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// of (count, displacement) pairs, which count the number of times each |
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// case was taken and specify the data displacment for each branch target. |
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336 |
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337 |
int MultiBranchData::compute_cell_count(BytecodeStream* stream) { |
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int cell_count = 0; |
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if (stream->code() == Bytecodes::_tableswitch) { |
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Bytecode_tableswitch* sw = Bytecode_tableswitch_at(stream->bcp()); |
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cell_count = 1 + per_case_cell_count * (1 + sw->length()); // 1 for default |
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} else { |
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Bytecode_lookupswitch* sw = Bytecode_lookupswitch_at(stream->bcp()); |
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cell_count = 1 + per_case_cell_count * (sw->number_of_pairs() + 1); // 1 for default |
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} |
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return cell_count; |
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} |
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348 |
||
349 |
void MultiBranchData::post_initialize(BytecodeStream* stream, |
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350 |
methodDataOop mdo) { |
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351 |
assert(stream->bci() == bci(), "wrong pos"); |
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352 |
int target; |
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353 |
int my_di; |
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int target_di; |
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int offset; |
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356 |
if (stream->code() == Bytecodes::_tableswitch) { |
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357 |
Bytecode_tableswitch* sw = Bytecode_tableswitch_at(stream->bcp()); |
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358 |
int len = sw->length(); |
|
359 |
assert(array_len() == per_case_cell_count * (len + 1), "wrong len"); |
|
360 |
for (int count = 0; count < len; count++) { |
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361 |
target = sw->dest_offset_at(count) + bci(); |
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362 |
my_di = mdo->dp_to_di(dp()); |
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363 |
target_di = mdo->bci_to_di(target); |
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364 |
offset = target_di - my_di; |
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365 |
set_displacement_at(count, offset); |
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366 |
} |
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367 |
target = sw->default_offset() + bci(); |
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368 |
my_di = mdo->dp_to_di(dp()); |
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369 |
target_di = mdo->bci_to_di(target); |
|
370 |
offset = target_di - my_di; |
|
371 |
set_default_displacement(offset); |
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372 |
||
373 |
} else { |
|
374 |
Bytecode_lookupswitch* sw = Bytecode_lookupswitch_at(stream->bcp()); |
|
375 |
int npairs = sw->number_of_pairs(); |
|
376 |
assert(array_len() == per_case_cell_count * (npairs + 1), "wrong len"); |
|
377 |
for (int count = 0; count < npairs; count++) { |
|
378 |
LookupswitchPair *pair = sw->pair_at(count); |
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379 |
target = pair->offset() + bci(); |
|
380 |
my_di = mdo->dp_to_di(dp()); |
|
381 |
target_di = mdo->bci_to_di(target); |
|
382 |
offset = target_di - my_di; |
|
383 |
set_displacement_at(count, offset); |
|
384 |
} |
|
385 |
target = sw->default_offset() + bci(); |
|
386 |
my_di = mdo->dp_to_di(dp()); |
|
387 |
target_di = mdo->bci_to_di(target); |
|
388 |
offset = target_di - my_di; |
|
389 |
set_default_displacement(offset); |
|
390 |
} |
|
391 |
} |
|
392 |
||
393 |
#ifndef PRODUCT |
|
394 |
void MultiBranchData::print_data_on(outputStream* st) { |
|
395 |
print_shared(st, "MultiBranchData"); |
|
396 |
st->print_cr("default_count(%u) displacement(%d)", |
|
397 |
default_count(), default_displacement()); |
|
398 |
int cases = number_of_cases(); |
|
399 |
for (int i = 0; i < cases; i++) { |
|
400 |
tab(st); |
|
401 |
st->print_cr("count(%u) displacement(%d)", |
|
402 |
count_at(i), displacement_at(i)); |
|
403 |
} |
|
404 |
} |
|
405 |
#endif |
|
406 |
||
218
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
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407 |
#ifndef PRODUCT |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
408 |
void ArgInfoData::print_data_on(outputStream* st) { |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
409 |
print_shared(st, "ArgInfoData"); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
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diff
changeset
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410 |
int nargs = number_of_args(); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
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diff
changeset
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411 |
for (int i = 0; i < nargs; i++) { |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
412 |
st->print(" 0x%x", arg_modified(i)); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
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changeset
|
413 |
} |
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|
414 |
st->cr(); |
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|
415 |
} |
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|
416 |
|
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|
417 |
#endif |
1 | 418 |
// ================================================================== |
419 |
// methodDataOop |
|
420 |
// |
|
421 |
// A methodDataOop holds information which has been collected about |
|
422 |
// a method. |
|
423 |
||
424 |
int methodDataOopDesc::bytecode_cell_count(Bytecodes::Code code) { |
|
425 |
switch (code) { |
|
426 |
case Bytecodes::_checkcast: |
|
427 |
case Bytecodes::_instanceof: |
|
428 |
case Bytecodes::_aastore: |
|
429 |
if (TypeProfileCasts) { |
|
430 |
return ReceiverTypeData::static_cell_count(); |
|
431 |
} else { |
|
432 |
return BitData::static_cell_count(); |
|
433 |
} |
|
434 |
case Bytecodes::_invokespecial: |
|
435 |
case Bytecodes::_invokestatic: |
|
436 |
return CounterData::static_cell_count(); |
|
437 |
case Bytecodes::_goto: |
|
438 |
case Bytecodes::_goto_w: |
|
439 |
case Bytecodes::_jsr: |
|
440 |
case Bytecodes::_jsr_w: |
|
441 |
return JumpData::static_cell_count(); |
|
442 |
case Bytecodes::_invokevirtual: |
|
443 |
case Bytecodes::_invokeinterface: |
|
444 |
return VirtualCallData::static_cell_count(); |
|
445 |
case Bytecodes::_ret: |
|
446 |
return RetData::static_cell_count(); |
|
447 |
case Bytecodes::_ifeq: |
|
448 |
case Bytecodes::_ifne: |
|
449 |
case Bytecodes::_iflt: |
|
450 |
case Bytecodes::_ifge: |
|
451 |
case Bytecodes::_ifgt: |
|
452 |
case Bytecodes::_ifle: |
|
453 |
case Bytecodes::_if_icmpeq: |
|
454 |
case Bytecodes::_if_icmpne: |
|
455 |
case Bytecodes::_if_icmplt: |
|
456 |
case Bytecodes::_if_icmpge: |
|
457 |
case Bytecodes::_if_icmpgt: |
|
458 |
case Bytecodes::_if_icmple: |
|
459 |
case Bytecodes::_if_acmpeq: |
|
460 |
case Bytecodes::_if_acmpne: |
|
461 |
case Bytecodes::_ifnull: |
|
462 |
case Bytecodes::_ifnonnull: |
|
463 |
return BranchData::static_cell_count(); |
|
464 |
case Bytecodes::_lookupswitch: |
|
465 |
case Bytecodes::_tableswitch: |
|
466 |
return variable_cell_count; |
|
467 |
} |
|
468 |
return no_profile_data; |
|
469 |
} |
|
470 |
||
471 |
// Compute the size of the profiling information corresponding to |
|
472 |
// the current bytecode. |
|
473 |
int methodDataOopDesc::compute_data_size(BytecodeStream* stream) { |
|
474 |
int cell_count = bytecode_cell_count(stream->code()); |
|
475 |
if (cell_count == no_profile_data) { |
|
476 |
return 0; |
|
477 |
} |
|
478 |
if (cell_count == variable_cell_count) { |
|
479 |
cell_count = MultiBranchData::compute_cell_count(stream); |
|
480 |
} |
|
481 |
// Note: cell_count might be zero, meaning that there is just |
|
482 |
// a DataLayout header, with no extra cells. |
|
483 |
assert(cell_count >= 0, "sanity"); |
|
484 |
return DataLayout::compute_size_in_bytes(cell_count); |
|
485 |
} |
|
486 |
||
487 |
int methodDataOopDesc::compute_extra_data_count(int data_size, int empty_bc_count) { |
|
488 |
if (ProfileTraps) { |
|
489 |
// Assume that up to 3% of BCIs with no MDP will need to allocate one. |
|
490 |
int extra_data_count = (uint)(empty_bc_count * 3) / 128 + 1; |
|
491 |
// If the method is large, let the extra BCIs grow numerous (to ~1%). |
|
492 |
int one_percent_of_data |
|
493 |
= (uint)data_size / (DataLayout::header_size_in_bytes()*128); |
|
494 |
if (extra_data_count < one_percent_of_data) |
|
495 |
extra_data_count = one_percent_of_data; |
|
496 |
if (extra_data_count > empty_bc_count) |
|
497 |
extra_data_count = empty_bc_count; // no need for more |
|
498 |
return extra_data_count; |
|
499 |
} else { |
|
500 |
return 0; |
|
501 |
} |
|
502 |
} |
|
503 |
||
504 |
// Compute the size of the methodDataOop necessary to store |
|
505 |
// profiling information about a given method. Size is in bytes. |
|
506 |
int methodDataOopDesc::compute_allocation_size_in_bytes(methodHandle method) { |
|
507 |
int data_size = 0; |
|
508 |
BytecodeStream stream(method); |
|
509 |
Bytecodes::Code c; |
|
510 |
int empty_bc_count = 0; // number of bytecodes lacking data |
|
511 |
while ((c = stream.next()) >= 0) { |
|
512 |
int size_in_bytes = compute_data_size(&stream); |
|
513 |
data_size += size_in_bytes; |
|
514 |
if (size_in_bytes == 0) empty_bc_count += 1; |
|
515 |
} |
|
516 |
int object_size = in_bytes(data_offset()) + data_size; |
|
517 |
||
518 |
// Add some extra DataLayout cells (at least one) to track stray traps. |
|
519 |
int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); |
|
520 |
object_size += extra_data_count * DataLayout::compute_size_in_bytes(0); |
|
521 |
||
218
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|
522 |
// Add a cell to record information about modified arguments. |
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|
523 |
int arg_size = method->size_of_parameters(); |
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|
524 |
object_size += DataLayout::compute_size_in_bytes(arg_size+1); |
1 | 525 |
return object_size; |
526 |
} |
|
527 |
||
528 |
// Compute the size of the methodDataOop necessary to store |
|
529 |
// profiling information about a given method. Size is in words |
|
530 |
int methodDataOopDesc::compute_allocation_size_in_words(methodHandle method) { |
|
531 |
int byte_size = compute_allocation_size_in_bytes(method); |
|
532 |
int word_size = align_size_up(byte_size, BytesPerWord) / BytesPerWord; |
|
533 |
return align_object_size(word_size); |
|
534 |
} |
|
535 |
||
536 |
// Initialize an individual data segment. Returns the size of |
|
537 |
// the segment in bytes. |
|
538 |
int methodDataOopDesc::initialize_data(BytecodeStream* stream, |
|
539 |
int data_index) { |
|
540 |
int cell_count = -1; |
|
541 |
int tag = DataLayout::no_tag; |
|
542 |
DataLayout* data_layout = data_layout_at(data_index); |
|
543 |
Bytecodes::Code c = stream->code(); |
|
544 |
switch (c) { |
|
545 |
case Bytecodes::_checkcast: |
|
546 |
case Bytecodes::_instanceof: |
|
547 |
case Bytecodes::_aastore: |
|
548 |
if (TypeProfileCasts) { |
|
549 |
cell_count = ReceiverTypeData::static_cell_count(); |
|
550 |
tag = DataLayout::receiver_type_data_tag; |
|
551 |
} else { |
|
552 |
cell_count = BitData::static_cell_count(); |
|
553 |
tag = DataLayout::bit_data_tag; |
|
554 |
} |
|
555 |
break; |
|
556 |
case Bytecodes::_invokespecial: |
|
557 |
case Bytecodes::_invokestatic: |
|
558 |
cell_count = CounterData::static_cell_count(); |
|
559 |
tag = DataLayout::counter_data_tag; |
|
560 |
break; |
|
561 |
case Bytecodes::_goto: |
|
562 |
case Bytecodes::_goto_w: |
|
563 |
case Bytecodes::_jsr: |
|
564 |
case Bytecodes::_jsr_w: |
|
565 |
cell_count = JumpData::static_cell_count(); |
|
566 |
tag = DataLayout::jump_data_tag; |
|
567 |
break; |
|
568 |
case Bytecodes::_invokevirtual: |
|
569 |
case Bytecodes::_invokeinterface: |
|
570 |
cell_count = VirtualCallData::static_cell_count(); |
|
571 |
tag = DataLayout::virtual_call_data_tag; |
|
572 |
break; |
|
573 |
case Bytecodes::_ret: |
|
574 |
cell_count = RetData::static_cell_count(); |
|
575 |
tag = DataLayout::ret_data_tag; |
|
576 |
break; |
|
577 |
case Bytecodes::_ifeq: |
|
578 |
case Bytecodes::_ifne: |
|
579 |
case Bytecodes::_iflt: |
|
580 |
case Bytecodes::_ifge: |
|
581 |
case Bytecodes::_ifgt: |
|
582 |
case Bytecodes::_ifle: |
|
583 |
case Bytecodes::_if_icmpeq: |
|
584 |
case Bytecodes::_if_icmpne: |
|
585 |
case Bytecodes::_if_icmplt: |
|
586 |
case Bytecodes::_if_icmpge: |
|
587 |
case Bytecodes::_if_icmpgt: |
|
588 |
case Bytecodes::_if_icmple: |
|
589 |
case Bytecodes::_if_acmpeq: |
|
590 |
case Bytecodes::_if_acmpne: |
|
591 |
case Bytecodes::_ifnull: |
|
592 |
case Bytecodes::_ifnonnull: |
|
593 |
cell_count = BranchData::static_cell_count(); |
|
594 |
tag = DataLayout::branch_data_tag; |
|
595 |
break; |
|
596 |
case Bytecodes::_lookupswitch: |
|
597 |
case Bytecodes::_tableswitch: |
|
598 |
cell_count = MultiBranchData::compute_cell_count(stream); |
|
599 |
tag = DataLayout::multi_branch_data_tag; |
|
600 |
break; |
|
601 |
} |
|
602 |
assert(tag == DataLayout::multi_branch_data_tag || |
|
603 |
cell_count == bytecode_cell_count(c), "cell counts must agree"); |
|
604 |
if (cell_count >= 0) { |
|
605 |
assert(tag != DataLayout::no_tag, "bad tag"); |
|
606 |
assert(bytecode_has_profile(c), "agree w/ BHP"); |
|
607 |
data_layout->initialize(tag, stream->bci(), cell_count); |
|
608 |
return DataLayout::compute_size_in_bytes(cell_count); |
|
609 |
} else { |
|
610 |
assert(!bytecode_has_profile(c), "agree w/ !BHP"); |
|
611 |
return 0; |
|
612 |
} |
|
613 |
} |
|
614 |
||
615 |
// Get the data at an arbitrary (sort of) data index. |
|
616 |
ProfileData* methodDataOopDesc::data_at(int data_index) { |
|
617 |
if (out_of_bounds(data_index)) { |
|
618 |
return NULL; |
|
619 |
} |
|
620 |
DataLayout* data_layout = data_layout_at(data_index); |
|
621 |
||
622 |
switch (data_layout->tag()) { |
|
623 |
case DataLayout::no_tag: |
|
624 |
default: |
|
625 |
ShouldNotReachHere(); |
|
626 |
return NULL; |
|
627 |
case DataLayout::bit_data_tag: |
|
628 |
return new BitData(data_layout); |
|
629 |
case DataLayout::counter_data_tag: |
|
630 |
return new CounterData(data_layout); |
|
631 |
case DataLayout::jump_data_tag: |
|
632 |
return new JumpData(data_layout); |
|
633 |
case DataLayout::receiver_type_data_tag: |
|
634 |
return new ReceiverTypeData(data_layout); |
|
635 |
case DataLayout::virtual_call_data_tag: |
|
636 |
return new VirtualCallData(data_layout); |
|
637 |
case DataLayout::ret_data_tag: |
|
638 |
return new RetData(data_layout); |
|
639 |
case DataLayout::branch_data_tag: |
|
640 |
return new BranchData(data_layout); |
|
641 |
case DataLayout::multi_branch_data_tag: |
|
642 |
return new MultiBranchData(data_layout); |
|
218
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|
643 |
case DataLayout::arg_info_data_tag: |
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|
644 |
return new ArgInfoData(data_layout); |
1 | 645 |
}; |
646 |
} |
|
647 |
||
648 |
// Iteration over data. |
|
649 |
ProfileData* methodDataOopDesc::next_data(ProfileData* current) { |
|
650 |
int current_index = dp_to_di(current->dp()); |
|
651 |
int next_index = current_index + current->size_in_bytes(); |
|
652 |
ProfileData* next = data_at(next_index); |
|
653 |
return next; |
|
654 |
} |
|
655 |
||
656 |
// Give each of the data entries a chance to perform specific |
|
657 |
// data initialization. |
|
658 |
void methodDataOopDesc::post_initialize(BytecodeStream* stream) { |
|
659 |
ResourceMark rm; |
|
660 |
ProfileData* data; |
|
661 |
for (data = first_data(); is_valid(data); data = next_data(data)) { |
|
662 |
stream->set_start(data->bci()); |
|
663 |
stream->next(); |
|
664 |
data->post_initialize(stream, this); |
|
665 |
} |
|
666 |
} |
|
667 |
||
668 |
// Initialize the methodDataOop corresponding to a given method. |
|
669 |
void methodDataOopDesc::initialize(methodHandle method) { |
|
670 |
ResourceMark rm; |
|
671 |
||
672 |
// Set the method back-pointer. |
|
673 |
_method = method(); |
|
674 |
set_creation_mileage(mileage_of(method())); |
|
675 |
||
676 |
// Initialize flags and trap history. |
|
677 |
_nof_decompiles = 0; |
|
678 |
_nof_overflow_recompiles = 0; |
|
679 |
_nof_overflow_traps = 0; |
|
680 |
assert(sizeof(_trap_hist) % sizeof(HeapWord) == 0, "align"); |
|
681 |
Copy::zero_to_words((HeapWord*) &_trap_hist, |
|
682 |
sizeof(_trap_hist) / sizeof(HeapWord)); |
|
683 |
||
684 |
// Go through the bytecodes and allocate and initialize the |
|
685 |
// corresponding data cells. |
|
686 |
int data_size = 0; |
|
687 |
int empty_bc_count = 0; // number of bytecodes lacking data |
|
688 |
BytecodeStream stream(method); |
|
689 |
Bytecodes::Code c; |
|
690 |
while ((c = stream.next()) >= 0) { |
|
691 |
int size_in_bytes = initialize_data(&stream, data_size); |
|
692 |
data_size += size_in_bytes; |
|
693 |
if (size_in_bytes == 0) empty_bc_count += 1; |
|
694 |
} |
|
695 |
_data_size = data_size; |
|
696 |
int object_size = in_bytes(data_offset()) + data_size; |
|
697 |
||
698 |
// Add some extra DataLayout cells (at least one) to track stray traps. |
|
699 |
int extra_data_count = compute_extra_data_count(data_size, empty_bc_count); |
|
218
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|
700 |
int extra_size = extra_data_count * DataLayout::compute_size_in_bytes(0); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
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|
701 |
|
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
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parents:
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diff
changeset
|
702 |
// Add a cell to record information about modified arguments. |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
703 |
// Set up _args_modified array after traps cells so that |
a0e996680b05
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kvn
parents:
1
diff
changeset
|
704 |
// the code for traps cells works. |
a0e996680b05
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parents:
1
diff
changeset
|
705 |
DataLayout *dp = data_layout_at(data_size + extra_size); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
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diff
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|
706 |
|
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
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parents:
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diff
changeset
|
707 |
int arg_size = method->size_of_parameters(); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
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parents:
1
diff
changeset
|
708 |
dp->initialize(DataLayout::arg_info_data_tag, 0, arg_size+1); |
a0e996680b05
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parents:
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|
709 |
|
a0e996680b05
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1
diff
changeset
|
710 |
object_size += extra_size + DataLayout::compute_size_in_bytes(arg_size+1); |
1 | 711 |
|
712 |
// Set an initial hint. Don't use set_hint_di() because |
|
713 |
// first_di() may be out of bounds if data_size is 0. |
|
714 |
// In that situation, _hint_di is never used, but at |
|
715 |
// least well-defined. |
|
716 |
_hint_di = first_di(); |
|
717 |
||
718 |
post_initialize(&stream); |
|
719 |
||
720 |
set_object_is_parsable(object_size); |
|
721 |
} |
|
722 |
||
723 |
// Get a measure of how much mileage the method has on it. |
|
724 |
int methodDataOopDesc::mileage_of(methodOop method) { |
|
725 |
int mileage = 0; |
|
726 |
int iic = method->interpreter_invocation_count(); |
|
727 |
if (mileage < iic) mileage = iic; |
|
728 |
||
729 |
InvocationCounter* ic = method->invocation_counter(); |
|
730 |
InvocationCounter* bc = method->backedge_counter(); |
|
731 |
||
732 |
int icval = ic->count(); |
|
733 |
if (ic->carry()) icval += CompileThreshold; |
|
734 |
if (mileage < icval) mileage = icval; |
|
735 |
int bcval = bc->count(); |
|
736 |
if (bc->carry()) bcval += CompileThreshold; |
|
737 |
if (mileage < bcval) mileage = bcval; |
|
738 |
return mileage; |
|
739 |
} |
|
740 |
||
741 |
bool methodDataOopDesc::is_mature() const { |
|
742 |
uint current = mileage_of(_method); |
|
743 |
uint initial = creation_mileage(); |
|
744 |
if (current < initial) |
|
745 |
return true; // some sort of overflow |
|
746 |
uint target; |
|
747 |
if (ProfileMaturityPercentage <= 0) |
|
748 |
target = (uint) -ProfileMaturityPercentage; // absolute value |
|
749 |
else |
|
750 |
target = (uint)( (ProfileMaturityPercentage * CompileThreshold) / 100 ); |
|
751 |
return (current >= initial + target); |
|
752 |
} |
|
753 |
||
754 |
// Translate a bci to its corresponding data index (di). |
|
755 |
address methodDataOopDesc::bci_to_dp(int bci) { |
|
756 |
ResourceMark rm; |
|
757 |
ProfileData* data = data_before(bci); |
|
758 |
ProfileData* prev = NULL; |
|
759 |
for ( ; is_valid(data); data = next_data(data)) { |
|
760 |
if (data->bci() >= bci) { |
|
761 |
if (data->bci() == bci) set_hint_di(dp_to_di(data->dp())); |
|
762 |
else if (prev != NULL) set_hint_di(dp_to_di(prev->dp())); |
|
763 |
return data->dp(); |
|
764 |
} |
|
765 |
prev = data; |
|
766 |
} |
|
767 |
return (address)limit_data_position(); |
|
768 |
} |
|
769 |
||
770 |
// Translate a bci to its corresponding data, or NULL. |
|
771 |
ProfileData* methodDataOopDesc::bci_to_data(int bci) { |
|
772 |
ProfileData* data = data_before(bci); |
|
773 |
for ( ; is_valid(data); data = next_data(data)) { |
|
774 |
if (data->bci() == bci) { |
|
775 |
set_hint_di(dp_to_di(data->dp())); |
|
776 |
return data; |
|
777 |
} else if (data->bci() > bci) { |
|
778 |
break; |
|
779 |
} |
|
780 |
} |
|
781 |
return bci_to_extra_data(bci, false); |
|
782 |
} |
|
783 |
||
784 |
// Translate a bci to its corresponding extra data, or NULL. |
|
785 |
ProfileData* methodDataOopDesc::bci_to_extra_data(int bci, bool create_if_missing) { |
|
786 |
DataLayout* dp = extra_data_base(); |
|
787 |
DataLayout* end = extra_data_limit(); |
|
788 |
DataLayout* avail = NULL; |
|
789 |
for (; dp < end; dp = next_extra(dp)) { |
|
790 |
// No need for "OrderAccess::load_acquire" ops, |
|
791 |
// since the data structure is monotonic. |
|
792 |
if (dp->tag() == DataLayout::no_tag) break; |
|
218
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parents:
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diff
changeset
|
793 |
if (dp->tag() == DataLayout::arg_info_data_tag) { |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
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diff
changeset
|
794 |
dp = end; // ArgInfoData is at the end of extra data section. |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
795 |
break; |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
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diff
changeset
|
796 |
} |
1 | 797 |
if (dp->bci() == bci) { |
798 |
assert(dp->tag() == DataLayout::bit_data_tag, "sane"); |
|
799 |
return new BitData(dp); |
|
800 |
} |
|
801 |
} |
|
802 |
if (create_if_missing && dp < end) { |
|
803 |
// Allocate this one. There is no mutual exclusion, |
|
804 |
// so two threads could allocate different BCIs to the |
|
805 |
// same data layout. This means these extra data |
|
806 |
// records, like most other MDO contents, must not be |
|
807 |
// trusted too much. |
|
808 |
DataLayout temp; |
|
809 |
temp.initialize(DataLayout::bit_data_tag, bci, 0); |
|
810 |
dp->release_set_header(temp.header()); |
|
811 |
assert(dp->tag() == DataLayout::bit_data_tag, "sane"); |
|
812 |
//NO: assert(dp->bci() == bci, "no concurrent allocation"); |
|
813 |
return new BitData(dp); |
|
814 |
} |
|
815 |
return NULL; |
|
816 |
} |
|
817 |
||
218
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parents:
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changeset
|
818 |
ArgInfoData *methodDataOopDesc::arg_info() { |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
819 |
DataLayout* dp = extra_data_base(); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
820 |
DataLayout* end = extra_data_limit(); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
821 |
for (; dp < end; dp = next_extra(dp)) { |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
822 |
if (dp->tag() == DataLayout::arg_info_data_tag) |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
823 |
return new ArgInfoData(dp); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
824 |
} |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
825 |
return NULL; |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
826 |
} |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
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diff
changeset
|
827 |
|
1 | 828 |
#ifndef PRODUCT |
829 |
void methodDataOopDesc::print_data_on(outputStream* st) { |
|
830 |
ResourceMark rm; |
|
831 |
ProfileData* data = first_data(); |
|
832 |
for ( ; is_valid(data); data = next_data(data)) { |
|
833 |
st->print("%d", dp_to_di(data->dp())); |
|
834 |
st->fill_to(6); |
|
835 |
data->print_data_on(st); |
|
836 |
} |
|
218
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kvn
parents:
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diff
changeset
|
837 |
st->print_cr("--- Extra data:"); |
1 | 838 |
DataLayout* dp = extra_data_base(); |
839 |
DataLayout* end = extra_data_limit(); |
|
840 |
for (; dp < end; dp = next_extra(dp)) { |
|
841 |
// No need for "OrderAccess::load_acquire" ops, |
|
842 |
// since the data structure is monotonic. |
|
218
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
843 |
if (dp->tag() == DataLayout::no_tag) continue; |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
844 |
if (dp->tag() == DataLayout::bit_data_tag) { |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
845 |
data = new BitData(dp); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
846 |
} else { |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
847 |
assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
848 |
data = new ArgInfoData(dp); |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
849 |
dp = end; // ArgInfoData is at the end of extra data section. |
a0e996680b05
6667615: (Escape Analysis) extend MDO to cache arguments escape state
kvn
parents:
1
diff
changeset
|
850 |
} |
1 | 851 |
st->print("%d", dp_to_di(data->dp())); |
852 |
st->fill_to(6); |
|
853 |
data->print_data_on(st); |
|
854 |
} |
|
855 |
} |
|
856 |
#endif |
|
857 |
||
858 |
void methodDataOopDesc::verify_data_on(outputStream* st) { |
|
859 |
NEEDS_CLEANUP; |
|
860 |
// not yet implemented. |
|
861 |
} |