author | vlivanov |
Tue, 10 Sep 2013 14:51:48 -0700 | |
changeset 19770 | 7cb9f982ea81 |
parent 15471 | 41f75023e6a6 |
child 20692 | 65021f70c2fc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001, 2012, 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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#include "precompiled.hpp" |
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#include "ci/ciMetadata.hpp" |
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#include "ci/ciMethodData.hpp" |
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#include "ci/ciReplay.hpp" |
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#include "ci/ciUtilities.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "runtime/deoptimization.hpp" |
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#include "utilities/copy.hpp" |
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// ciMethodData |
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// ------------------------------------------------------------------ |
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// ciMethodData::ciMethodData |
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// |
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ciMethodData::ciMethodData(MethodData* md) : ciMetadata(md) { |
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assert(md != NULL, "no null method data"); |
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Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); |
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_data = NULL; |
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_data_size = 0; |
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_extra_data_size = 0; |
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_current_mileage = 0; |
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_invocation_counter = 0; |
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_backedge_counter = 0; |
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_state = empty_state; |
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_saw_free_extra_data = false; |
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// Set an initial hint. Don't use set_hint_di() because |
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// first_di() may be out of bounds if data_size is 0. |
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_hint_di = first_di(); |
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// Initialize the escape information (to "don't know."); |
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_eflags = _arg_local = _arg_stack = _arg_returned = 0; |
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} |
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// ------------------------------------------------------------------ |
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// ciMethodData::ciMethodData |
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// |
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// No MethodData*. |
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ciMethodData::ciMethodData() : ciMetadata(NULL) { |
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Copy::zero_to_words((HeapWord*) &_orig, sizeof(_orig) / sizeof(HeapWord)); |
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_data = NULL; |
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_data_size = 0; |
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_extra_data_size = 0; |
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_current_mileage = 0; |
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_invocation_counter = 0; |
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_backedge_counter = 0; |
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_state = empty_state; |
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_saw_free_extra_data = false; |
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// Set an initial hint. Don't use set_hint_di() because |
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// first_di() may be out of bounds if data_size is 0. |
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_hint_di = first_di(); |
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// Initialize the escape information (to "don't know."); |
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_eflags = _arg_local = _arg_stack = _arg_returned = 0; |
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} |
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void ciMethodData::load_data() { |
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MethodData* mdo = get_MethodData(); |
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if (mdo == NULL) return; |
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// To do: don't copy the data if it is not "ripe" -- require a minimum # |
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// of invocations. |
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// Snapshot the data -- actually, take an approximate snapshot of |
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// the data. Any concurrently executing threads may be changing the |
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// data as we copy it. |
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Copy::disjoint_words((HeapWord*) mdo, |
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(HeapWord*) &_orig, |
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sizeof(_orig) / HeapWordSize); |
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Arena* arena = CURRENT_ENV->arena(); |
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_data_size = mdo->data_size(); |
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_extra_data_size = mdo->extra_data_size(); |
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int total_size = _data_size + _extra_data_size; |
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_data = (intptr_t *) arena->Amalloc(total_size); |
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Copy::disjoint_words((HeapWord*) mdo->data_base(), (HeapWord*) _data, total_size / HeapWordSize); |
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// Traverse the profile data, translating any oops into their |
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// ci equivalents. |
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ResourceMark rm; |
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ciProfileData* ci_data = first_data(); |
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ProfileData* data = mdo->first_data(); |
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while (is_valid(ci_data)) { |
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ci_data->translate_from(data); |
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ci_data = next_data(ci_data); |
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data = mdo->next_data(data); |
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} |
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// Note: Extra data are all BitData, and do not need translation. |
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_current_mileage = MethodData::mileage_of(mdo->method()); |
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_invocation_counter = mdo->invocation_count(); |
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_backedge_counter = mdo->backedge_count(); |
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_state = mdo->is_mature()? mature_state: immature_state; |
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_eflags = mdo->eflags(); |
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_arg_local = mdo->arg_local(); |
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_arg_stack = mdo->arg_stack(); |
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_arg_returned = mdo->arg_returned(); |
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#ifndef PRODUCT |
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if (ReplayCompiles) { |
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ciReplay::initialize(this); |
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} |
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#endif |
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} |
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void ciReceiverTypeData::translate_receiver_data_from(ProfileData* data) { |
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for (uint row = 0; row < row_limit(); row++) { |
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Klass* k = data->as_ReceiverTypeData()->receiver(row); |
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if (k != NULL) { |
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ciKlass* klass = CURRENT_ENV->get_klass(k); |
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set_receiver(row, klass); |
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} |
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} |
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} |
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// Get the data at an arbitrary (sort of) data index. |
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ciProfileData* ciMethodData::data_at(int data_index) { |
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if (out_of_bounds(data_index)) { |
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return NULL; |
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} |
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DataLayout* data_layout = data_layout_at(data_index); |
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switch (data_layout->tag()) { |
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case DataLayout::no_tag: |
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default: |
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ShouldNotReachHere(); |
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return NULL; |
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case DataLayout::bit_data_tag: |
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return new ciBitData(data_layout); |
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case DataLayout::counter_data_tag: |
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return new ciCounterData(data_layout); |
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case DataLayout::jump_data_tag: |
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return new ciJumpData(data_layout); |
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case DataLayout::receiver_type_data_tag: |
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return new ciReceiverTypeData(data_layout); |
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case DataLayout::virtual_call_data_tag: |
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return new ciVirtualCallData(data_layout); |
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case DataLayout::ret_data_tag: |
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return new ciRetData(data_layout); |
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case DataLayout::branch_data_tag: |
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return new ciBranchData(data_layout); |
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case DataLayout::multi_branch_data_tag: |
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return new ciMultiBranchData(data_layout); |
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case DataLayout::arg_info_data_tag: |
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return new ciArgInfoData(data_layout); |
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}; |
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} |
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// Iteration over data. |
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ciProfileData* ciMethodData::next_data(ciProfileData* current) { |
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int current_index = dp_to_di(current->dp()); |
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int next_index = current_index + current->size_in_bytes(); |
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ciProfileData* next = data_at(next_index); |
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return next; |
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} |
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// Translate a bci to its corresponding data, or NULL. |
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ciProfileData* ciMethodData::bci_to_data(int bci) { |
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ciProfileData* data = data_before(bci); |
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for ( ; is_valid(data); data = next_data(data)) { |
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if (data->bci() == bci) { |
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set_hint_di(dp_to_di(data->dp())); |
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return data; |
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} else if (data->bci() > bci) { |
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break; |
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} |
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} |
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// bci_to_extra_data(bci) ... |
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DataLayout* dp = data_layout_at(data_size()); |
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DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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for (; dp < end; dp = MethodData::next_extra(dp)) { |
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if (dp->tag() == DataLayout::no_tag) { |
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_saw_free_extra_data = true; // observed an empty slot (common case) |
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return NULL; |
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} |
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if (dp->tag() == DataLayout::arg_info_data_tag) { |
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break; // ArgInfoData is at the end of extra data section. |
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} |
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if (dp->bci() == bci) { |
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assert(dp->tag() == DataLayout::bit_data_tag, "sane"); |
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return new ciBitData(dp); |
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} |
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} |
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return NULL; |
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} |
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// Conservatively decode the trap_state of a ciProfileData. |
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int ciMethodData::has_trap_at(ciProfileData* data, int reason) { |
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typedef Deoptimization::DeoptReason DR_t; |
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int per_bc_reason |
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= Deoptimization::reason_recorded_per_bytecode_if_any((DR_t) reason); |
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if (trap_count(reason) == 0) { |
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// Impossible for this trap to have occurred, regardless of trap_state. |
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// Note: This happens if the MDO is empty. |
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return 0; |
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} else if (per_bc_reason == Deoptimization::Reason_none) { |
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// We cannot conclude anything; a trap happened somewhere, maybe here. |
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return -1; |
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} else if (data == NULL) { |
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// No profile here, not even an extra_data record allocated on the fly. |
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// If there are empty extra_data records, and there had been a trap, |
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// there would have been a non-null data pointer. If there are no |
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// free extra_data records, we must return a conservative -1. |
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if (_saw_free_extra_data) |
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return 0; // Q.E.D. |
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else |
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return -1; // bail with a conservative answer |
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} else { |
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return Deoptimization::trap_state_has_reason(data->trap_state(), per_bc_reason); |
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} |
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} |
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int ciMethodData::trap_recompiled_at(ciProfileData* data) { |
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if (data == NULL) { |
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return (_saw_free_extra_data? 0: -1); // (see previous method) |
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} else { |
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return Deoptimization::trap_state_is_recompiled(data->trap_state())? 1: 0; |
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} |
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} |
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void ciMethodData::clear_escape_info() { |
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VM_ENTRY_MARK; |
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MethodData* mdo = get_MethodData(); |
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if (mdo != NULL) { |
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mdo->clear_escape_info(); |
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ArgInfoData *aid = arg_info(); |
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int arg_count = (aid == NULL) ? 0 : aid->number_of_args(); |
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for (int i = 0; i < arg_count; i++) { |
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set_arg_modified(i, 0); |
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} |
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} |
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_eflags = _arg_local = _arg_stack = _arg_returned = 0; |
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} |
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// copy our escape info to the MethodData* if it exists |
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void ciMethodData::update_escape_info() { |
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VM_ENTRY_MARK; |
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MethodData* mdo = get_MethodData(); |
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if ( mdo != NULL) { |
261 |
mdo->set_eflags(_eflags); |
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mdo->set_arg_local(_arg_local); |
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mdo->set_arg_stack(_arg_stack); |
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mdo->set_arg_returned(_arg_returned); |
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int arg_count = mdo->method()->size_of_parameters(); |
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for (int i = 0; i < arg_count; i++) { |
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mdo->set_arg_modified(i, arg_modified(i)); |
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} |
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} |
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} |
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void ciMethodData::set_compilation_stats(short loops, short blocks) { |
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VM_ENTRY_MARK; |
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MethodData* mdo = get_MethodData(); |
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if (mdo != NULL) { |
276 |
mdo->set_num_loops(loops); |
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mdo->set_num_blocks(blocks); |
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} |
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} |
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void ciMethodData::set_would_profile(bool p) { |
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VM_ENTRY_MARK; |
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MethodData* mdo = get_MethodData(); |
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if (mdo != NULL) { |
285 |
mdo->set_would_profile(p); |
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} |
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287 |
} |
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bool ciMethodData::has_escape_info() { |
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return eflag_set(MethodData::estimated); |
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} |
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void ciMethodData::set_eflag(MethodData::EscapeFlag f) { |
1 | 294 |
set_bits(_eflags, f); |
295 |
} |
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296 |
||
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297 |
void ciMethodData::clear_eflag(MethodData::EscapeFlag f) { |
1 | 298 |
clear_bits(_eflags, f); |
299 |
} |
|
300 |
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301 |
bool ciMethodData::eflag_set(MethodData::EscapeFlag f) const { |
1 | 302 |
return mask_bits(_eflags, f) != 0; |
303 |
} |
|
304 |
||
305 |
void ciMethodData::set_arg_local(int i) { |
|
306 |
set_nth_bit(_arg_local, i); |
|
307 |
} |
|
308 |
||
309 |
void ciMethodData::set_arg_stack(int i) { |
|
310 |
set_nth_bit(_arg_stack, i); |
|
311 |
} |
|
312 |
||
313 |
void ciMethodData::set_arg_returned(int i) { |
|
314 |
set_nth_bit(_arg_returned, i); |
|
315 |
} |
|
316 |
||
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317 |
void ciMethodData::set_arg_modified(int arg, uint val) { |
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318 |
ArgInfoData *aid = arg_info(); |
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|
319 |
if (aid == NULL) |
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|
320 |
return; |
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|
321 |
assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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|
322 |
aid->set_arg_modified(arg, val); |
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|
323 |
} |
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324 |
|
1 | 325 |
bool ciMethodData::is_arg_local(int i) const { |
326 |
return is_set_nth_bit(_arg_local, i); |
|
327 |
} |
|
328 |
||
329 |
bool ciMethodData::is_arg_stack(int i) const { |
|
330 |
return is_set_nth_bit(_arg_stack, i); |
|
331 |
} |
|
332 |
||
333 |
bool ciMethodData::is_arg_returned(int i) const { |
|
334 |
return is_set_nth_bit(_arg_returned, i); |
|
335 |
} |
|
336 |
||
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337 |
uint ciMethodData::arg_modified(int arg) const { |
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338 |
ArgInfoData *aid = arg_info(); |
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|
339 |
if (aid == NULL) |
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|
340 |
return 0; |
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|
341 |
assert(arg >= 0 && arg < aid->number_of_args(), "valid argument number"); |
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|
342 |
return aid->arg_modified(arg); |
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|
343 |
} |
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|
344 |
|
1 | 345 |
ByteSize ciMethodData::offset_of_slot(ciProfileData* data, ByteSize slot_offset_in_data) { |
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346 |
// Get offset within MethodData* of the data array |
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347 |
ByteSize data_offset = MethodData::data_offset(); |
1 | 348 |
|
349 |
// Get cell offset of the ProfileData within data array |
|
350 |
int cell_offset = dp_to_di(data->dp()); |
|
351 |
||
352 |
// Add in counter_offset, the # of bytes into the ProfileData of counter or flag |
|
353 |
int offset = in_bytes(data_offset) + cell_offset + in_bytes(slot_offset_in_data); |
|
354 |
||
355 |
return in_ByteSize(offset); |
|
356 |
} |
|
357 |
||
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358 |
ciArgInfoData *ciMethodData::arg_info() const { |
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|
359 |
// Should be last, have to skip all traps. |
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|
360 |
DataLayout* dp = data_layout_at(data_size()); |
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|
361 |
DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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362 |
for (; dp < end; dp = MethodData::next_extra(dp)) { |
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|
363 |
if (dp->tag() == DataLayout::arg_info_data_tag) |
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|
364 |
return new ciArgInfoData(dp); |
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|
365 |
} |
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|
366 |
return NULL; |
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|
367 |
} |
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|
368 |
|
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|
369 |
|
1 | 370 |
// Implementation of the print method. |
371 |
void ciMethodData::print_impl(outputStream* st) { |
|
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372 |
ciMetadata::print_impl(st); |
1 | 373 |
} |
374 |
||
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375 |
void ciMethodData::dump_replay_data(outputStream* out) { |
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|
376 |
ASSERT_IN_VM; |
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|
377 |
ResourceMark rm; |
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|
378 |
MethodData* mdo = get_MethodData(); |
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|
379 |
Method* method = mdo->method(); |
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|
380 |
Klass* holder = method->method_holder(); |
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|
381 |
out->print("ciMethodData %s %s %s %d %d", |
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|
382 |
holder->name()->as_quoted_ascii(), |
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|
383 |
method->name()->as_quoted_ascii(), |
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|
384 |
method->signature()->as_quoted_ascii(), |
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|
385 |
_state, |
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|
386 |
current_mileage()); |
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|
387 |
|
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|
388 |
// dump the contents of the MDO header as raw data |
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|
389 |
unsigned char* orig = (unsigned char*)&_orig; |
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|
390 |
int length = sizeof(_orig); |
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|
391 |
out->print(" orig %d", length); |
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|
392 |
for (int i = 0; i < length; i++) { |
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|
393 |
out->print(" %d", orig[i]); |
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|
394 |
} |
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|
395 |
|
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|
396 |
// dump the MDO data as raw data |
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|
397 |
int elements = data_size() / sizeof(intptr_t); |
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|
398 |
out->print(" data %d", elements); |
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|
399 |
for (int i = 0; i < elements; i++) { |
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|
400 |
// We could use INTPTR_FORMAT here but that's a zero justified |
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|
401 |
// which makes comparing it with the SA version of this output |
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|
402 |
// harder. |
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|
403 |
#ifdef _LP64 |
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|
404 |
out->print(" 0x%" FORMAT64_MODIFIER "x", data()[i]); |
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|
405 |
#else |
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|
406 |
out->print(" 0x%x", data()[i]); |
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|
407 |
#endif |
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|
408 |
} |
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|
409 |
|
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|
410 |
// The MDO contained oop references as ciObjects, so scan for those |
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|
411 |
// and emit pairs of offset and klass name so that they can be |
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|
412 |
// reconstructed at runtime. The first round counts the number of |
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|
413 |
// oop references and the second actually emits them. |
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|
414 |
int count = 0; |
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|
415 |
for (int round = 0; round < 2; round++) { |
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|
416 |
if (round == 1) out->print(" oops %d", count); |
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|
417 |
ProfileData* pdata = first_data(); |
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|
418 |
for ( ; is_valid(pdata); pdata = next_data(pdata)) { |
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|
419 |
if (pdata->is_ReceiverTypeData()) { |
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|
420 |
ciReceiverTypeData* vdata = (ciReceiverTypeData*)pdata; |
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|
421 |
for (uint i = 0; i < vdata->row_limit(); i++) { |
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|
422 |
ciKlass* k = vdata->receiver(i); |
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|
423 |
if (k != NULL) { |
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|
424 |
if (round == 0) { |
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|
425 |
count++; |
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|
426 |
} else { |
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|
427 |
out->print(" %d %s", dp_to_di(vdata->dp() + in_bytes(vdata->receiver_offset(i))) / sizeof(intptr_t), k->name()->as_quoted_ascii()); |
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|
428 |
} |
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|
429 |
} |
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|
430 |
} |
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|
431 |
} else if (pdata->is_VirtualCallData()) { |
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|
432 |
ciVirtualCallData* vdata = (ciVirtualCallData*)pdata; |
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|
433 |
for (uint i = 0; i < vdata->row_limit(); i++) { |
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|
434 |
ciKlass* k = vdata->receiver(i); |
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|
435 |
if (k != NULL) { |
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|
436 |
if (round == 0) { |
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|
437 |
count++; |
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|
438 |
} else { |
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|
439 |
out->print(" %d %s", dp_to_di(vdata->dp() + in_bytes(vdata->receiver_offset(i))) / sizeof(intptr_t), k->name()->as_quoted_ascii()); |
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|
440 |
} |
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|
441 |
} |
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|
442 |
} |
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|
443 |
} |
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|
444 |
} |
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|
445 |
} |
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|
446 |
out->cr(); |
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|
447 |
} |
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|
448 |
|
1 | 449 |
#ifndef PRODUCT |
450 |
void ciMethodData::print() { |
|
451 |
print_data_on(tty); |
|
452 |
} |
|
453 |
||
454 |
void ciMethodData::print_data_on(outputStream* st) { |
|
455 |
ResourceMark rm; |
|
456 |
ciProfileData* data; |
|
457 |
for (data = first_data(); is_valid(data); data = next_data(data)) { |
|
458 |
st->print("%d", dp_to_di(data->dp())); |
|
459 |
st->fill_to(6); |
|
460 |
data->print_data_on(st); |
|
461 |
} |
|
218
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|
462 |
st->print_cr("--- Extra data:"); |
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|
463 |
DataLayout* dp = data_layout_at(data_size()); |
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changeset
|
464 |
DataLayout* end = data_layout_at(data_size() + extra_data_size()); |
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|
465 |
for (; dp < end; dp = MethodData::next_extra(dp)) { |
218
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466 |
if (dp->tag() == DataLayout::no_tag) continue; |
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467 |
if (dp->tag() == DataLayout::bit_data_tag) { |
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468 |
data = new BitData(dp); |
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469 |
} else { |
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470 |
assert(dp->tag() == DataLayout::arg_info_data_tag, "must be BitData or ArgInfo"); |
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471 |
data = new ciArgInfoData(dp); |
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472 |
dp = end; // ArgInfoData is at the end of extra data section. |
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473 |
} |
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474 |
st->print("%d", dp_to_di(data->dp())); |
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475 |
st->fill_to(6); |
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|
476 |
data->print_data_on(st); |
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477 |
} |
1 | 478 |
} |
479 |
||
480 |
void ciReceiverTypeData::print_receiver_data_on(outputStream* st) { |
|
481 |
uint row; |
|
482 |
int entries = 0; |
|
483 |
for (row = 0; row < row_limit(); row++) { |
|
484 |
if (receiver(row) != NULL) entries++; |
|
485 |
} |
|
486 |
st->print_cr("count(%u) entries(%u)", count(), entries); |
|
487 |
for (row = 0; row < row_limit(); row++) { |
|
488 |
if (receiver(row) != NULL) { |
|
489 |
tab(st); |
|
490 |
receiver(row)->print_name_on(st); |
|
491 |
st->print_cr("(%u)", receiver_count(row)); |
|
492 |
} |
|
493 |
} |
|
494 |
} |
|
495 |
||
496 |
void ciReceiverTypeData::print_data_on(outputStream* st) { |
|
497 |
print_shared(st, "ciReceiverTypeData"); |
|
498 |
print_receiver_data_on(st); |
|
499 |
} |
|
500 |
||
501 |
void ciVirtualCallData::print_data_on(outputStream* st) { |
|
502 |
print_shared(st, "ciVirtualCallData"); |
|
503 |
rtd_super()->print_receiver_data_on(st); |
|
504 |
} |
|
505 |
#endif |