author | drchase |
Mon, 01 Dec 2014 13:06:20 -0500 | |
changeset 28514 | da53c1ffc837 |
parent 27700 | a402738ebfcf |
child 29081 | c61eb4914428 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2005, 2014, 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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||
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#include "precompiled.hpp" |
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#include "ci/ciArrayKlass.hpp" |
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#include "ci/ciEnv.hpp" |
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#include "ci/ciKlass.hpp" |
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#include "ci/ciMethod.hpp" |
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#include "code/dependencies.hpp" |
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#include "compiler/compileLog.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/handles.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/thread.inline.hpp" |
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#include "utilities/copy.hpp" |
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#ifdef ASSERT |
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static bool must_be_in_vm() { |
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Thread* thread = Thread::current(); |
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if (thread->is_Java_thread()) |
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return ((JavaThread*)thread)->thread_state() == _thread_in_vm; |
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else |
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return true; //something like this: thread->is_VM_thread(); |
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} |
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#endif //ASSERT |
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void Dependencies::initialize(ciEnv* env) { |
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Arena* arena = env->arena(); |
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_oop_recorder = env->oop_recorder(); |
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_log = env->log(); |
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_dep_seen = new(arena) GrowableArray<int>(arena, 500, 0, 0); |
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DEBUG_ONLY(_deps[end_marker] = NULL); |
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for (int i = (int)FIRST_TYPE; i < (int)TYPE_LIMIT; i++) { |
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_deps[i] = new(arena) GrowableArray<ciBaseObject*>(arena, 10, 0, 0); |
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} |
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_content_bytes = NULL; |
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_size_in_bytes = (size_t)-1; |
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assert(TYPE_LIMIT <= (1<<LG2_TYPE_LIMIT), "sanity"); |
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} |
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void Dependencies::assert_evol_method(ciMethod* m) { |
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assert_common_1(evol_method, m); |
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} |
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void Dependencies::assert_leaf_type(ciKlass* ctxk) { |
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if (ctxk->is_array_klass()) { |
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// As a special case, support this assertion on an array type, |
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// which reduces to an assertion on its element type. |
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// Note that this cannot be done with assertions that |
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// relate to concreteness or abstractness. |
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ciType* elemt = ctxk->as_array_klass()->base_element_type(); |
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if (!elemt->is_instance_klass()) return; // Ex: int[][] |
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ctxk = elemt->as_instance_klass(); |
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//if (ctxk->is_final()) return; // Ex: String[][] |
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} |
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check_ctxk(ctxk); |
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assert_common_1(leaf_type, ctxk); |
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} |
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void Dependencies::assert_abstract_with_unique_concrete_subtype(ciKlass* ctxk, ciKlass* conck) { |
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check_ctxk_abstract(ctxk); |
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assert_common_2(abstract_with_unique_concrete_subtype, ctxk, conck); |
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} |
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void Dependencies::assert_abstract_with_no_concrete_subtype(ciKlass* ctxk) { |
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check_ctxk_abstract(ctxk); |
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assert_common_1(abstract_with_no_concrete_subtype, ctxk); |
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} |
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void Dependencies::assert_concrete_with_no_concrete_subtype(ciKlass* ctxk) { |
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check_ctxk_concrete(ctxk); |
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assert_common_1(concrete_with_no_concrete_subtype, ctxk); |
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} |
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void Dependencies::assert_unique_concrete_method(ciKlass* ctxk, ciMethod* uniqm) { |
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check_ctxk(ctxk); |
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assert_common_2(unique_concrete_method, ctxk, uniqm); |
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} |
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void Dependencies::assert_abstract_with_exclusive_concrete_subtypes(ciKlass* ctxk, ciKlass* k1, ciKlass* k2) { |
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check_ctxk(ctxk); |
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assert_common_3(abstract_with_exclusive_concrete_subtypes_2, ctxk, k1, k2); |
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} |
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void Dependencies::assert_exclusive_concrete_methods(ciKlass* ctxk, ciMethod* m1, ciMethod* m2) { |
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check_ctxk(ctxk); |
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assert_common_3(exclusive_concrete_methods_2, ctxk, m1, m2); |
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} |
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void Dependencies::assert_has_no_finalizable_subclasses(ciKlass* ctxk) { |
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check_ctxk(ctxk); |
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assert_common_1(no_finalizable_subclasses, ctxk); |
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} |
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void Dependencies::assert_call_site_target_value(ciCallSite* call_site, ciMethodHandle* method_handle) { |
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check_ctxk(call_site->klass()); |
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assert_common_2(call_site_target_value, call_site, method_handle); |
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} |
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// Helper function. If we are adding a new dep. under ctxk2, |
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// try to find an old dep. under a broader* ctxk1. If there is |
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// |
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bool Dependencies::maybe_merge_ctxk(GrowableArray<ciBaseObject*>* deps, |
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int ctxk_i, ciKlass* ctxk2) { |
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ciKlass* ctxk1 = deps->at(ctxk_i)->as_metadata()->as_klass(); |
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if (ctxk2->is_subtype_of(ctxk1)) { |
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return true; // success, and no need to change |
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} else if (ctxk1->is_subtype_of(ctxk2)) { |
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// new context class fully subsumes previous one |
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deps->at_put(ctxk_i, ctxk2); |
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return true; |
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} else { |
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return false; |
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} |
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} |
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void Dependencies::assert_common_1(DepType dept, ciBaseObject* x) { |
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assert(dep_args(dept) == 1, "sanity"); |
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log_dependency(dept, x); |
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GrowableArray<ciBaseObject*>* deps = _deps[dept]; |
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// see if the same (or a similar) dep is already recorded |
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if (note_dep_seen(dept, x)) { |
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assert(deps->find(x) >= 0, "sanity"); |
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} else { |
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deps->append(x); |
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} |
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} |
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void Dependencies::assert_common_2(DepType dept, |
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ciBaseObject* x0, ciBaseObject* x1) { |
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assert(dep_args(dept) == 2, "sanity"); |
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log_dependency(dept, x0, x1); |
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GrowableArray<ciBaseObject*>* deps = _deps[dept]; |
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// see if the same (or a similar) dep is already recorded |
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bool has_ctxk = has_explicit_context_arg(dept); |
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if (has_ctxk) { |
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assert(dep_context_arg(dept) == 0, "sanity"); |
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if (note_dep_seen(dept, x1)) { |
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// look in this bucket for redundant assertions |
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const int stride = 2; |
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for (int i = deps->length(); (i -= stride) >= 0; ) { |
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ciBaseObject* y1 = deps->at(i+1); |
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if (x1 == y1) { // same subject; check the context |
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if (maybe_merge_ctxk(deps, i+0, x0->as_metadata()->as_klass())) { |
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return; |
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} |
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} |
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} |
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} |
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} else { |
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assert(dep_implicit_context_arg(dept) == 0, "sanity"); |
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if (note_dep_seen(dept, x0) && note_dep_seen(dept, x1)) { |
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// look in this bucket for redundant assertions |
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const int stride = 2; |
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for (int i = deps->length(); (i -= stride) >= 0; ) { |
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ciBaseObject* y0 = deps->at(i+0); |
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ciBaseObject* y1 = deps->at(i+1); |
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if (x0 == y0 && x1 == y1) { |
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return; |
185 |
} |
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186 |
} |
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} |
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188 |
} |
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189 |
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// append the assertion in the correct bucket: |
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deps->append(x0); |
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deps->append(x1); |
1 | 193 |
} |
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void Dependencies::assert_common_3(DepType dept, |
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ciKlass* ctxk, ciBaseObject* x, ciBaseObject* x2) { |
1 | 197 |
assert(dep_context_arg(dept) == 0, "sanity"); |
198 |
assert(dep_args(dept) == 3, "sanity"); |
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log_dependency(dept, ctxk, x, x2); |
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GrowableArray<ciBaseObject*>* deps = _deps[dept]; |
1 | 201 |
|
202 |
// try to normalize an unordered pair: |
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203 |
bool swap = false; |
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204 |
switch (dept) { |
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205 |
case abstract_with_exclusive_concrete_subtypes_2: |
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swap = (x->ident() > x2->ident() && x->as_metadata()->as_klass() != ctxk); |
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break; |
208 |
case exclusive_concrete_methods_2: |
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swap = (x->ident() > x2->ident() && x->as_metadata()->as_method()->holder() != ctxk); |
1 | 210 |
break; |
211 |
} |
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if (swap) { ciBaseObject* t = x; x = x2; x2 = t; } |
1 | 213 |
|
214 |
// see if the same (or a similar) dep is already recorded |
|
215 |
if (note_dep_seen(dept, x) && note_dep_seen(dept, x2)) { |
|
216 |
// look in this bucket for redundant assertions |
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217 |
const int stride = 3; |
|
218 |
for (int i = deps->length(); (i -= stride) >= 0; ) { |
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ciBaseObject* y = deps->at(i+1); |
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ciBaseObject* y2 = deps->at(i+2); |
1 | 221 |
if (x == y && x2 == y2) { // same subjects; check the context |
222 |
if (maybe_merge_ctxk(deps, i+0, ctxk)) { |
|
223 |
return; |
|
224 |
} |
|
225 |
} |
|
226 |
} |
|
227 |
} |
|
228 |
// append the assertion in the correct bucket: |
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229 |
deps->append(ctxk); |
|
230 |
deps->append(x); |
|
231 |
deps->append(x2); |
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232 |
} |
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233 |
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234 |
/// Support for encoding dependencies into an nmethod: |
|
235 |
||
236 |
void Dependencies::copy_to(nmethod* nm) { |
|
237 |
address beg = nm->dependencies_begin(); |
|
238 |
address end = nm->dependencies_end(); |
|
239 |
guarantee(end - beg >= (ptrdiff_t) size_in_bytes(), "bad sizing"); |
|
240 |
Copy::disjoint_words((HeapWord*) content_bytes(), |
|
241 |
(HeapWord*) beg, |
|
242 |
size_in_bytes() / sizeof(HeapWord)); |
|
243 |
assert(size_in_bytes() % sizeof(HeapWord) == 0, "copy by words"); |
|
244 |
} |
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245 |
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static int sort_dep(ciBaseObject** p1, ciBaseObject** p2, int narg) { |
1 | 247 |
for (int i = 0; i < narg; i++) { |
248 |
int diff = p1[i]->ident() - p2[i]->ident(); |
|
249 |
if (diff != 0) return diff; |
|
250 |
} |
|
251 |
return 0; |
|
252 |
} |
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static int sort_dep_arg_1(ciBaseObject** p1, ciBaseObject** p2) |
1 | 254 |
{ return sort_dep(p1, p2, 1); } |
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static int sort_dep_arg_2(ciBaseObject** p1, ciBaseObject** p2) |
1 | 256 |
{ return sort_dep(p1, p2, 2); } |
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static int sort_dep_arg_3(ciBaseObject** p1, ciBaseObject** p2) |
1 | 258 |
{ return sort_dep(p1, p2, 3); } |
259 |
||
260 |
void Dependencies::sort_all_deps() { |
|
261 |
for (int deptv = (int)FIRST_TYPE; deptv < (int)TYPE_LIMIT; deptv++) { |
|
262 |
DepType dept = (DepType)deptv; |
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GrowableArray<ciBaseObject*>* deps = _deps[dept]; |
1 | 264 |
if (deps->length() <= 1) continue; |
265 |
switch (dep_args(dept)) { |
|
266 |
case 1: deps->sort(sort_dep_arg_1, 1); break; |
|
267 |
case 2: deps->sort(sort_dep_arg_2, 2); break; |
|
268 |
case 3: deps->sort(sort_dep_arg_3, 3); break; |
|
269 |
default: ShouldNotReachHere(); |
|
270 |
} |
|
271 |
} |
|
272 |
} |
|
273 |
||
274 |
size_t Dependencies::estimate_size_in_bytes() { |
|
275 |
size_t est_size = 100; |
|
276 |
for (int deptv = (int)FIRST_TYPE; deptv < (int)TYPE_LIMIT; deptv++) { |
|
277 |
DepType dept = (DepType)deptv; |
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GrowableArray<ciBaseObject*>* deps = _deps[dept]; |
1 | 279 |
est_size += deps->length()*2; // tags and argument(s) |
280 |
} |
|
281 |
return est_size; |
|
282 |
} |
|
283 |
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ciKlass* Dependencies::ctxk_encoded_as_null(DepType dept, ciBaseObject* x) { |
1 | 285 |
switch (dept) { |
286 |
case abstract_with_exclusive_concrete_subtypes_2: |
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return x->as_metadata()->as_klass(); |
1 | 288 |
case unique_concrete_method: |
289 |
case exclusive_concrete_methods_2: |
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return x->as_metadata()->as_method()->holder(); |
1 | 291 |
} |
292 |
return NULL; // let NULL be NULL |
|
293 |
} |
|
294 |
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Klass* Dependencies::ctxk_encoded_as_null(DepType dept, Metadata* x) { |
1 | 296 |
assert(must_be_in_vm(), "raw oops here"); |
297 |
switch (dept) { |
|
298 |
case abstract_with_exclusive_concrete_subtypes_2: |
|
299 |
assert(x->is_klass(), "sanity"); |
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return (Klass*) x; |
1 | 301 |
case unique_concrete_method: |
302 |
case exclusive_concrete_methods_2: |
|
303 |
assert(x->is_method(), "sanity"); |
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return ((Method*)x)->method_holder(); |
1 | 305 |
} |
306 |
return NULL; // let NULL be NULL |
|
307 |
} |
|
308 |
||
309 |
void Dependencies::encode_content_bytes() { |
|
310 |
sort_all_deps(); |
|
311 |
||
312 |
// cast is safe, no deps can overflow INT_MAX |
|
313 |
CompressedWriteStream bytes((int)estimate_size_in_bytes()); |
|
314 |
||
315 |
for (int deptv = (int)FIRST_TYPE; deptv < (int)TYPE_LIMIT; deptv++) { |
|
316 |
DepType dept = (DepType)deptv; |
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GrowableArray<ciBaseObject*>* deps = _deps[dept]; |
1 | 318 |
if (deps->length() == 0) continue; |
319 |
int stride = dep_args(dept); |
|
320 |
int ctxkj = dep_context_arg(dept); // -1 if no context arg |
|
321 |
assert(stride > 0, "sanity"); |
|
322 |
for (int i = 0; i < deps->length(); i += stride) { |
|
323 |
jbyte code_byte = (jbyte)dept; |
|
324 |
int skipj = -1; |
|
325 |
if (ctxkj >= 0 && ctxkj+1 < stride) { |
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ciKlass* ctxk = deps->at(i+ctxkj+0)->as_metadata()->as_klass(); |
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ciBaseObject* x = deps->at(i+ctxkj+1); // following argument |
1 | 328 |
if (ctxk == ctxk_encoded_as_null(dept, x)) { |
329 |
skipj = ctxkj; // we win: maybe one less oop to keep track of |
|
330 |
code_byte |= default_context_type_bit; |
|
331 |
} |
|
332 |
} |
|
333 |
bytes.write_byte(code_byte); |
|
334 |
for (int j = 0; j < stride; j++) { |
|
335 |
if (j == skipj) continue; |
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ciBaseObject* v = deps->at(i+j); |
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int idx; |
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if (v->is_object()) { |
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idx = _oop_recorder->find_index(v->as_object()->constant_encoding()); |
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340 |
} else { |
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ciMetadata* meta = v->as_metadata(); |
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idx = _oop_recorder->find_index(meta->constant_encoding()); |
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343 |
} |
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|
344 |
bytes.write_int(idx); |
1 | 345 |
} |
346 |
} |
|
347 |
} |
|
348 |
||
349 |
// write a sentinel byte to mark the end |
|
350 |
bytes.write_byte(end_marker); |
|
351 |
||
352 |
// round it out to a word boundary |
|
353 |
while (bytes.position() % sizeof(HeapWord) != 0) { |
|
354 |
bytes.write_byte(end_marker); |
|
355 |
} |
|
356 |
||
357 |
// check whether the dept byte encoding really works |
|
358 |
assert((jbyte)default_context_type_bit != 0, "byte overflow"); |
|
359 |
||
360 |
_content_bytes = bytes.buffer(); |
|
361 |
_size_in_bytes = bytes.position(); |
|
362 |
} |
|
363 |
||
364 |
||
365 |
const char* Dependencies::_dep_name[TYPE_LIMIT] = { |
|
366 |
"end_marker", |
|
367 |
"evol_method", |
|
368 |
"leaf_type", |
|
369 |
"abstract_with_unique_concrete_subtype", |
|
370 |
"abstract_with_no_concrete_subtype", |
|
371 |
"concrete_with_no_concrete_subtype", |
|
372 |
"unique_concrete_method", |
|
373 |
"abstract_with_exclusive_concrete_subtypes_2", |
|
374 |
"exclusive_concrete_methods_2", |
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"no_finalizable_subclasses", |
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376 |
"call_site_target_value" |
1 | 377 |
}; |
378 |
||
379 |
int Dependencies::_dep_args[TYPE_LIMIT] = { |
|
380 |
-1,// end_marker |
|
381 |
1, // evol_method m |
|
382 |
1, // leaf_type ctxk |
|
383 |
2, // abstract_with_unique_concrete_subtype ctxk, k |
|
384 |
1, // abstract_with_no_concrete_subtype ctxk |
|
385 |
1, // concrete_with_no_concrete_subtype ctxk |
|
386 |
2, // unique_concrete_method ctxk, m |
|
387 |
3, // unique_concrete_subtypes_2 ctxk, k1, k2 |
|
388 |
3, // unique_concrete_methods_2 ctxk, m1, m2 |
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1, // no_finalizable_subclasses ctxk |
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|
390 |
2 // call_site_target_value call_site, method_handle |
1 | 391 |
}; |
392 |
||
393 |
const char* Dependencies::dep_name(Dependencies::DepType dept) { |
|
394 |
if (!dept_in_mask(dept, all_types)) return "?bad-dep?"; |
|
395 |
return _dep_name[dept]; |
|
396 |
} |
|
397 |
||
398 |
int Dependencies::dep_args(Dependencies::DepType dept) { |
|
399 |
if (!dept_in_mask(dept, all_types)) return -1; |
|
400 |
return _dep_args[dept]; |
|
401 |
} |
|
402 |
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403 |
void Dependencies::check_valid_dependency_type(DepType dept) { |
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|
404 |
guarantee(FIRST_TYPE <= dept && dept < TYPE_LIMIT, err_msg("invalid dependency type: %d", (int) dept)); |
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|
405 |
} |
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|
406 |
|
1 | 407 |
// for the sake of the compiler log, print out current dependencies: |
408 |
void Dependencies::log_all_dependencies() { |
|
409 |
if (log() == NULL) return; |
|
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|
410 |
ResourceMark rm; |
1 | 411 |
for (int deptv = (int)FIRST_TYPE; deptv < (int)TYPE_LIMIT; deptv++) { |
412 |
DepType dept = (DepType)deptv; |
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413 |
GrowableArray<ciBaseObject*>* deps = _deps[dept]; |
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|
414 |
int deplen = deps->length(); |
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|
415 |
if (deplen == 0) { |
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|
416 |
continue; |
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|
417 |
} |
1 | 418 |
int stride = dep_args(dept); |
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|
419 |
GrowableArray<ciBaseObject*>* ciargs = new GrowableArray<ciBaseObject*>(stride); |
1 | 420 |
for (int i = 0; i < deps->length(); i += stride) { |
421 |
for (int j = 0; j < stride; j++) { |
|
422 |
// flush out the identities before printing |
|
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|
423 |
ciargs->push(deps->at(i+j)); |
1 | 424 |
} |
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|
425 |
write_dependency_to(log(), dept, ciargs); |
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|
426 |
ciargs->clear(); |
1 | 427 |
} |
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|
428 |
guarantee(deplen == deps->length(), "deps array cannot grow inside nested ResoureMark scope"); |
1 | 429 |
} |
430 |
} |
|
431 |
||
432 |
void Dependencies::write_dependency_to(CompileLog* log, |
|
433 |
DepType dept, |
|
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|
434 |
GrowableArray<DepArgument>* args, |
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|
435 |
Klass* witness) { |
1 | 436 |
if (log == NULL) { |
437 |
return; |
|
438 |
} |
|
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|
439 |
ResourceMark rm; |
1 | 440 |
ciEnv* env = ciEnv::current(); |
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|
441 |
GrowableArray<ciBaseObject*>* ciargs = new GrowableArray<ciBaseObject*>(args->length()); |
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|
442 |
for (GrowableArrayIterator<DepArgument> it = args->begin(); it != args->end(); ++it) { |
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|
443 |
DepArgument arg = *it; |
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|
444 |
if (arg.is_oop()) { |
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|
445 |
ciargs->push(env->get_object(arg.oop_value())); |
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|
446 |
} else { |
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|
447 |
ciargs->push(env->get_metadata(arg.metadata_value())); |
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|
448 |
} |
1 | 449 |
} |
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|
450 |
int argslen = ciargs->length(); |
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|
451 |
Dependencies::write_dependency_to(log, dept, ciargs, witness); |
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|
452 |
guarantee(argslen == ciargs->length(), "ciargs array cannot grow inside nested ResoureMark scope"); |
1 | 453 |
} |
454 |
||
455 |
void Dependencies::write_dependency_to(CompileLog* log, |
|
456 |
DepType dept, |
|
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changeset
|
457 |
GrowableArray<ciBaseObject*>* args, |
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|
458 |
Klass* witness) { |
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|
459 |
if (log == NULL) { |
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|
460 |
return; |
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|
461 |
} |
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changeset
|
462 |
ResourceMark rm; |
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|
463 |
GrowableArray<int>* argids = new GrowableArray<int>(args->length()); |
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|
464 |
for (GrowableArrayIterator<ciBaseObject*> it = args->begin(); it != args->end(); ++it) { |
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|
465 |
ciBaseObject* obj = *it; |
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|
466 |
if (obj->is_object()) { |
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|
467 |
argids->push(log->identify(obj->as_object())); |
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|
468 |
} else { |
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|
469 |
argids->push(log->identify(obj->as_metadata())); |
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|
470 |
} |
1 | 471 |
} |
472 |
if (witness != NULL) { |
|
473 |
log->begin_elem("dependency_failed"); |
|
474 |
} else { |
|
475 |
log->begin_elem("dependency"); |
|
476 |
} |
|
477 |
log->print(" type='%s'", dep_name(dept)); |
|
25936
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|
478 |
const int ctxkj = dep_context_arg(dept); // -1 if no context arg |
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|
479 |
if (ctxkj >= 0 && ctxkj < argids->length()) { |
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changeset
|
480 |
log->print(" ctxk='%d'", argids->at(ctxkj)); |
1 | 481 |
} |
482 |
// write remaining arguments, if any. |
|
25936
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8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
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diff
changeset
|
483 |
for (int j = 0; j < argids->length(); j++) { |
1 | 484 |
if (j == ctxkj) continue; // already logged |
485 |
if (j == 1) { |
|
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
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diff
changeset
|
486 |
log->print( " x='%d'", argids->at(j)); |
1 | 487 |
} else { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
488 |
log->print(" x%d='%d'", j, argids->at(j)); |
1 | 489 |
} |
490 |
} |
|
491 |
if (witness != NULL) { |
|
492 |
log->object("witness", witness); |
|
493 |
log->stamp(); |
|
494 |
} |
|
495 |
log->end_elem(); |
|
496 |
} |
|
497 |
||
498 |
void Dependencies::write_dependency_to(xmlStream* xtty, |
|
499 |
DepType dept, |
|
25936
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diff
changeset
|
500 |
GrowableArray<DepArgument>* args, |
13728
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|
501 |
Klass* witness) { |
25936
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8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
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diff
changeset
|
502 |
if (xtty == NULL) { |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
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diff
changeset
|
503 |
return; |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
504 |
} |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
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diff
changeset
|
505 |
ResourceMark rm; |
1 | 506 |
ttyLocker ttyl; |
507 |
int ctxkj = dep_context_arg(dept); // -1 if no context arg |
|
508 |
if (witness != NULL) { |
|
509 |
xtty->begin_elem("dependency_failed"); |
|
510 |
} else { |
|
511 |
xtty->begin_elem("dependency"); |
|
512 |
} |
|
513 |
xtty->print(" type='%s'", dep_name(dept)); |
|
514 |
if (ctxkj >= 0) { |
|
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
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diff
changeset
|
515 |
xtty->object("ctxk", args->at(ctxkj).metadata_value()); |
1 | 516 |
} |
517 |
// write remaining arguments, if any. |
|
25936
9b693ed74c13
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morris
parents:
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diff
changeset
|
518 |
for (int j = 0; j < args->length(); j++) { |
1 | 519 |
if (j == ctxkj) continue; // already logged |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
520 |
DepArgument arg = args->at(j); |
1 | 521 |
if (j == 1) { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
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diff
changeset
|
522 |
if (arg.is_oop()) { |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
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diff
changeset
|
523 |
xtty->object("x", arg.oop_value()); |
13728
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
524 |
} else { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
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diff
changeset
|
525 |
xtty->object("x", arg.metadata_value()); |
13728
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
526 |
} |
1 | 527 |
} else { |
528 |
char xn[10]; sprintf(xn, "x%d", j); |
|
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
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diff
changeset
|
529 |
if (arg.is_oop()) { |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
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diff
changeset
|
530 |
xtty->object(xn, arg.oop_value()); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
531 |
} else { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
532 |
xtty->object(xn, arg.metadata_value()); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
533 |
} |
1 | 534 |
} |
535 |
} |
|
536 |
if (witness != NULL) { |
|
537 |
xtty->object("witness", witness); |
|
538 |
xtty->stamp(); |
|
539 |
} |
|
540 |
xtty->end_elem(); |
|
541 |
} |
|
542 |
||
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
543 |
void Dependencies::print_dependency(DepType dept, GrowableArray<DepArgument>* args, |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
544 |
Klass* witness) { |
1 | 545 |
ResourceMark rm; |
546 |
ttyLocker ttyl; // keep the following output all in one block |
|
547 |
tty->print_cr("%s of type %s", |
|
548 |
(witness == NULL)? "Dependency": "Failed dependency", |
|
549 |
dep_name(dept)); |
|
550 |
// print arguments |
|
551 |
int ctxkj = dep_context_arg(dept); // -1 if no context arg |
|
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
552 |
for (int j = 0; j < args->length(); j++) { |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
553 |
DepArgument arg = args->at(j); |
1 | 554 |
bool put_star = false; |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
555 |
if (arg.is_null()) continue; |
1 | 556 |
const char* what; |
557 |
if (j == ctxkj) { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
558 |
assert(arg.is_metadata(), "must be"); |
1 | 559 |
what = "context"; |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
560 |
put_star = !Dependencies::is_concrete_klass((Klass*)arg.metadata_value()); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
561 |
} else if (arg.is_method()) { |
1 | 562 |
what = "method "; |
28514 | 563 |
put_star = !Dependencies::is_concrete_method((Method*)arg.metadata_value(), NULL); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
564 |
} else if (arg.is_klass()) { |
1 | 565 |
what = "class "; |
566 |
} else { |
|
567 |
what = "object "; |
|
568 |
} |
|
569 |
tty->print(" %s = %s", what, (put_star? "*": "")); |
|
26914
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
570 |
if (arg.is_klass()) { |
14488 | 571 |
tty->print("%s", ((Klass*)arg.metadata_value())->external_name()); |
26914
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8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
572 |
} else if (arg.is_method()) { |
13728
882756847a04
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coleenp
parents:
12369
diff
changeset
|
573 |
((Method*)arg.metadata_value())->print_value(); |
26914
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
574 |
} else if (arg.is_oop()) { |
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
575 |
arg.oop_value()->print_value_on(tty); |
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
576 |
} else { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
577 |
ShouldNotReachHere(); // Provide impl for this type. |
26914
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
578 |
} |
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
579 |
|
1 | 580 |
tty->cr(); |
581 |
} |
|
582 |
if (witness != NULL) { |
|
583 |
bool put_star = !Dependencies::is_concrete_klass(witness); |
|
584 |
tty->print_cr(" witness = %s%s", |
|
585 |
(put_star? "*": ""), |
|
14488 | 586 |
witness->external_name()); |
1 | 587 |
} |
588 |
} |
|
589 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
590 |
void Dependencies::DepStream::log_dependency(Klass* witness) { |
1 | 591 |
if (_deps == NULL && xtty == NULL) return; // fast cutout for runtime |
14477
95e66ea71f71
6830717: replay of compilations would help with debugging
minqi
parents:
14391
diff
changeset
|
592 |
ResourceMark rm; |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
593 |
const int nargs = argument_count(); |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
594 |
GrowableArray<DepArgument>* args = new GrowableArray<DepArgument>(nargs); |
1 | 595 |
for (int j = 0; j < nargs; j++) { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
596 |
if (type() == call_site_target_value) { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
597 |
args->push(argument_oop(j)); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
598 |
} else { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
599 |
args->push(argument(j)); |
13965
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
600 |
} |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
601 |
} |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
602 |
int argslen = args->length(); |
1 | 603 |
if (_deps != NULL && _deps->log() != NULL) { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
604 |
Dependencies::write_dependency_to(_deps->log(), type(), args, witness); |
1 | 605 |
} else { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
606 |
Dependencies::write_dependency_to(xtty, type(), args, witness); |
1 | 607 |
} |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
608 |
guarantee(argslen == args->length(), "args array cannot grow inside nested ResoureMark scope"); |
1 | 609 |
} |
610 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
611 |
void Dependencies::DepStream::print_dependency(Klass* witness, bool verbose) { |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
612 |
ResourceMark rm; |
1 | 613 |
int nargs = argument_count(); |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
614 |
GrowableArray<DepArgument>* args = new GrowableArray<DepArgument>(nargs); |
1 | 615 |
for (int j = 0; j < nargs; j++) { |
26914
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
616 |
if (type() == call_site_target_value) { |
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
617 |
args->push(argument_oop(j)); |
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
618 |
} else { |
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
619 |
args->push(argument(j)); |
a270e0fac50e
8058578: -XX:+TraceDependencies is broken for call_site_target_value dependency type
vlivanov
parents:
25936
diff
changeset
|
620 |
} |
1 | 621 |
} |
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
622 |
int argslen = args->length(); |
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
623 |
Dependencies::print_dependency(type(), args, witness); |
1 | 624 |
if (verbose) { |
625 |
if (_code != NULL) { |
|
626 |
tty->print(" code: "); |
|
627 |
_code->print_value_on(tty); |
|
628 |
tty->cr(); |
|
629 |
} |
|
630 |
} |
|
25936
9b693ed74c13
8040920: Uninitialised memory in hotspot/src/share/vm/code/dependencies.cpp
morris
parents:
24484
diff
changeset
|
631 |
guarantee(argslen == args->length(), "args array cannot grow inside nested ResoureMark scope"); |
1 | 632 |
} |
633 |
||
634 |
||
635 |
/// Dependency stream support (decodes dependencies from an nmethod): |
|
636 |
||
637 |
#ifdef ASSERT |
|
638 |
void Dependencies::DepStream::initial_asserts(size_t byte_limit) { |
|
639 |
assert(must_be_in_vm(), "raw oops here"); |
|
640 |
_byte_limit = byte_limit; |
|
641 |
_type = (DepType)(end_marker-1); // defeat "already at end" assert |
|
642 |
assert((_code!=NULL) + (_deps!=NULL) == 1, "one or t'other"); |
|
643 |
} |
|
644 |
#endif //ASSERT |
|
645 |
||
646 |
bool Dependencies::DepStream::next() { |
|
647 |
assert(_type != end_marker, "already at end"); |
|
648 |
if (_bytes.position() == 0 && _code != NULL |
|
649 |
&& _code->dependencies_size() == 0) { |
|
650 |
// Method has no dependencies at all. |
|
651 |
return false; |
|
652 |
} |
|
653 |
int code_byte = (_bytes.read_byte() & 0xFF); |
|
654 |
if (code_byte == end_marker) { |
|
655 |
DEBUG_ONLY(_type = end_marker); |
|
656 |
return false; |
|
657 |
} else { |
|
658 |
int ctxk_bit = (code_byte & Dependencies::default_context_type_bit); |
|
659 |
code_byte -= ctxk_bit; |
|
660 |
DepType dept = (DepType)code_byte; |
|
661 |
_type = dept; |
|
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
662 |
Dependencies::check_valid_dependency_type(dept); |
1 | 663 |
int stride = _dep_args[dept]; |
664 |
assert(stride == dep_args(dept), "sanity"); |
|
665 |
int skipj = -1; |
|
666 |
if (ctxk_bit != 0) { |
|
667 |
skipj = 0; // currently the only context argument is at zero |
|
668 |
assert(skipj == dep_context_arg(dept), "zero arg always ctxk"); |
|
669 |
} |
|
670 |
for (int j = 0; j < stride; j++) { |
|
671 |
_xi[j] = (j == skipj)? 0: _bytes.read_int(); |
|
672 |
} |
|
673 |
DEBUG_ONLY(_xi[stride] = -1); // help detect overruns |
|
674 |
return true; |
|
675 |
} |
|
676 |
} |
|
677 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
678 |
inline Metadata* Dependencies::DepStream::recorded_metadata_at(int i) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
679 |
Metadata* o = NULL; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
680 |
if (_code != NULL) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
681 |
o = _code->metadata_at(i); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
682 |
} else { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
683 |
o = _deps->oop_recorder()->metadata_at(i); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
684 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
685 |
return o; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
686 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
687 |
|
1 | 688 |
inline oop Dependencies::DepStream::recorded_oop_at(int i) { |
689 |
return (_code != NULL) |
|
690 |
? _code->oop_at(i) |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
691 |
: JNIHandles::resolve(_deps->oop_recorder()->oop_at(i)); |
1 | 692 |
} |
693 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
694 |
Metadata* Dependencies::DepStream::argument(int i) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
695 |
Metadata* result = recorded_metadata_at(argument_index(i)); |
13965
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
696 |
|
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
697 |
if (result == NULL) { // Explicit context argument can be compressed |
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
698 |
int ctxkj = dep_context_arg(type()); // -1 if no explicit context arg |
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
699 |
if (ctxkj >= 0 && i == ctxkj && ctxkj+1 < argument_count()) { |
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
700 |
result = ctxk_encoded_as_null(type(), argument(ctxkj+1)); |
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
701 |
} |
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
702 |
} |
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
703 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
704 |
assert(result == NULL || result->is_klass() || result->is_method(), "must be"); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
705 |
return result; |
1 | 706 |
} |
707 |
||
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
708 |
/** |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
709 |
* Returns a unique identifier for each dependency argument. |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
710 |
*/ |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
711 |
uintptr_t Dependencies::DepStream::get_identifier(int i) { |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
712 |
if (has_oop_argument()) { |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
713 |
return (uintptr_t)(oopDesc*)argument_oop(i); |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
714 |
} else { |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
715 |
return (uintptr_t)argument(i); |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
716 |
} |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
717 |
} |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
718 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
719 |
oop Dependencies::DepStream::argument_oop(int i) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
720 |
oop result = recorded_oop_at(argument_index(i)); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
721 |
assert(result == NULL || result->is_oop(), "must be"); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
722 |
return result; |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
723 |
} |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
724 |
|
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
725 |
Klass* Dependencies::DepStream::context_type() { |
1 | 726 |
assert(must_be_in_vm(), "raw oops here"); |
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
727 |
|
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
728 |
// Most dependencies have an explicit context type argument. |
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
729 |
{ |
13965
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
730 |
int ctxkj = dep_context_arg(type()); // -1 if no explicit context arg |
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
731 |
if (ctxkj >= 0) { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
732 |
Metadata* k = argument(ctxkj); |
13965
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
733 |
assert(k != NULL && k->is_klass(), "type check"); |
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
734 |
return (Klass*)k; |
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
735 |
} |
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
736 |
} |
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
737 |
|
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
738 |
// Some dependencies are using the klass of the first object |
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
739 |
// argument as implicit context type (e.g. call_site_target_value). |
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
740 |
{ |
13965
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
741 |
int ctxkj = dep_implicit_context_arg(type()); |
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
742 |
if (ctxkj >= 0) { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
743 |
Klass* k = argument_oop(ctxkj)->klass(); |
13965
fe09056af6ae
8000232: NPG: SIGSEGV in Dependencies::DepStream::check_klass_dependency on solaris-x64
vlivanov
parents:
13743
diff
changeset
|
744 |
assert(k != NULL && k->is_klass(), "type check"); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
745 |
return (Klass*) k; |
1 | 746 |
} |
747 |
} |
|
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
748 |
|
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
749 |
// And some dependencies don't have a context type at all, |
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
750 |
// e.g. evol_method. |
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
751 |
return NULL; |
1 | 752 |
} |
753 |
||
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
754 |
// ----------------- DependencySignature -------------------------------------- |
23187
0f438571f278
8035946: Use ResourceHashtable for dependency checking
anoll
parents:
22921
diff
changeset
|
755 |
bool DependencySignature::equals(DependencySignature const& s1, DependencySignature const& s2) { |
0f438571f278
8035946: Use ResourceHashtable for dependency checking
anoll
parents:
22921
diff
changeset
|
756 |
if ((s1.type() != s2.type()) || (s1.args_count() != s2.args_count())) { |
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
757 |
return false; |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
758 |
} |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
759 |
|
23187
0f438571f278
8035946: Use ResourceHashtable for dependency checking
anoll
parents:
22921
diff
changeset
|
760 |
for (int i = 0; i < s1.args_count(); i++) { |
0f438571f278
8035946: Use ResourceHashtable for dependency checking
anoll
parents:
22921
diff
changeset
|
761 |
if (s1.arg(i) != s2.arg(i)) { |
22506
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
762 |
return false; |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
763 |
} |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
764 |
} |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
765 |
return true; |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
766 |
} |
0759c126204d
7194669: CodeCache::mark_for_deoptimization should avoid verifying dependencies multiple times
anoll
parents:
20391
diff
changeset
|
767 |
|
1 | 768 |
/// Checking dependencies: |
769 |
||
770 |
// This hierarchy walker inspects subtypes of a given type, |
|
771 |
// trying to find a "bad" class which breaks a dependency. |
|
772 |
// Such a class is called a "witness" to the broken dependency. |
|
773 |
// While searching around, we ignore "participants", which |
|
774 |
// are already known to the dependency. |
|
775 |
class ClassHierarchyWalker { |
|
776 |
public: |
|
777 |
enum { PARTICIPANT_LIMIT = 3 }; |
|
778 |
||
779 |
private: |
|
780 |
// optional method descriptor to check for: |
|
8076
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
781 |
Symbol* _name; |
96d498ec7ae1
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
7397
diff
changeset
|
782 |
Symbol* _signature; |
1 | 783 |
|
784 |
// special classes which are not allowed to be witnesses: |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
785 |
Klass* _participants[PARTICIPANT_LIMIT+1]; |
1 | 786 |
int _num_participants; |
787 |
||
788 |
// cache of method lookups |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
789 |
Method* _found_methods[PARTICIPANT_LIMIT+1]; |
1 | 790 |
|
791 |
// if non-zero, tells how many witnesses to convert to participants |
|
792 |
int _record_witnesses; |
|
793 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
794 |
void initialize(Klass* participant) { |
1 | 795 |
_record_witnesses = 0; |
796 |
_participants[0] = participant; |
|
797 |
_found_methods[0] = NULL; |
|
798 |
_num_participants = 0; |
|
799 |
if (participant != NULL) { |
|
800 |
// Terminating NULL. |
|
801 |
_participants[1] = NULL; |
|
802 |
_found_methods[1] = NULL; |
|
803 |
_num_participants = 1; |
|
804 |
} |
|
805 |
} |
|
806 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
807 |
void initialize_from_method(Method* m) { |
1 | 808 |
assert(m != NULL && m->is_method(), "sanity"); |
809 |
_name = m->name(); |
|
810 |
_signature = m->signature(); |
|
811 |
} |
|
812 |
||
813 |
public: |
|
814 |
// The walker is initialized to recognize certain methods and/or types |
|
815 |
// as friendly participants. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
816 |
ClassHierarchyWalker(Klass* participant, Method* m) { |
1 | 817 |
initialize_from_method(m); |
818 |
initialize(participant); |
|
819 |
} |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
820 |
ClassHierarchyWalker(Method* m) { |
1 | 821 |
initialize_from_method(m); |
822 |
initialize(NULL); |
|
823 |
} |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
824 |
ClassHierarchyWalker(Klass* participant = NULL) { |
1 | 825 |
_name = NULL; |
826 |
_signature = NULL; |
|
827 |
initialize(participant); |
|
828 |
} |
|
829 |
||
830 |
// This is common code for two searches: One for concrete subtypes, |
|
831 |
// the other for concrete method implementations and overrides. |
|
832 |
bool doing_subtype_search() { |
|
833 |
return _name == NULL; |
|
834 |
} |
|
835 |
||
836 |
int num_participants() { return _num_participants; } |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
837 |
Klass* participant(int n) { |
1 | 838 |
assert((uint)n <= (uint)_num_participants, "oob"); |
839 |
return _participants[n]; |
|
840 |
} |
|
841 |
||
842 |
// Note: If n==num_participants, returns NULL. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
843 |
Method* found_method(int n) { |
1 | 844 |
assert((uint)n <= (uint)_num_participants, "oob"); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
845 |
Method* fm = _found_methods[n]; |
1 | 846 |
assert(n == _num_participants || fm != NULL, "proper usage"); |
847 |
assert(fm == NULL || fm->method_holder() == _participants[n], "sanity"); |
|
848 |
return fm; |
|
849 |
} |
|
850 |
||
851 |
#ifdef ASSERT |
|
852 |
// Assert that m is inherited into ctxk, without intervening overrides. |
|
853 |
// (May return true even if this is not true, in corner cases where we punt.) |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
854 |
bool check_method_context(Klass* ctxk, Method* m) { |
1 | 855 |
if (m->method_holder() == ctxk) |
856 |
return true; // Quick win. |
|
857 |
if (m->is_private()) |
|
858 |
return false; // Quick lose. Should not happen. |
|
859 |
if (!(m->is_public() || m->is_protected())) |
|
860 |
// The override story is complex when packages get involved. |
|
861 |
return true; // Must punt the assertion to true. |
|
14488 | 862 |
Klass* k = ctxk; |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
863 |
Method* lm = k->lookup_method(m->name(), m->signature()); |
1 | 864 |
if (lm == NULL && k->oop_is_instance()) { |
20391
7b146c5ebb18
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
18439
diff
changeset
|
865 |
// It might be an interface method |
7b146c5ebb18
8009130: Lambda: Fix access controls, loader constraints.
acorn
parents:
18439
diff
changeset
|
866 |
lm = ((InstanceKlass*)k)->lookup_method_in_ordered_interfaces(m->name(), |
1 | 867 |
m->signature()); |
868 |
} |
|
869 |
if (lm == m) |
|
870 |
// Method m is inherited into ctxk. |
|
871 |
return true; |
|
872 |
if (lm != NULL) { |
|
10984
bca73db4935e
7105305: assert check_method_context proper context
never
parents:
10503
diff
changeset
|
873 |
if (!(lm->is_public() || lm->is_protected())) { |
1 | 874 |
// Method is [package-]private, so the override story is complex. |
875 |
return true; // Must punt the assertion to true. |
|
10984
bca73db4935e
7105305: assert check_method_context proper context
never
parents:
10503
diff
changeset
|
876 |
} |
bca73db4935e
7105305: assert check_method_context proper context
never
parents:
10503
diff
changeset
|
877 |
if (lm->is_static()) { |
bca73db4935e
7105305: assert check_method_context proper context
never
parents:
10503
diff
changeset
|
878 |
// Static methods don't override non-static so punt |
bca73db4935e
7105305: assert check_method_context proper context
never
parents:
10503
diff
changeset
|
879 |
return true; |
bca73db4935e
7105305: assert check_method_context proper context
never
parents:
10503
diff
changeset
|
880 |
} |
28514 | 881 |
if ( !Dependencies::is_concrete_method(lm, k) |
882 |
&& !Dependencies::is_concrete_method(m, ctxk) |
|
14391
df0a1573d5bd
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
14385
diff
changeset
|
883 |
&& lm->method_holder()->is_subtype_of(m->method_holder())) |
1 | 884 |
// Method m is overridden by lm, but both are non-concrete. |
885 |
return true; |
|
886 |
} |
|
887 |
ResourceMark rm; |
|
888 |
tty->print_cr("Dependency method not found in the associated context:"); |
|
14488 | 889 |
tty->print_cr(" context = %s", ctxk->external_name()); |
1 | 890 |
tty->print( " method = "); m->print_short_name(tty); tty->cr(); |
891 |
if (lm != NULL) { |
|
892 |
tty->print( " found = "); lm->print_short_name(tty); tty->cr(); |
|
893 |
} |
|
894 |
return false; |
|
895 |
} |
|
896 |
#endif |
|
897 |
||
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|
898 |
void add_participant(Klass* participant) { |
1 | 899 |
assert(_num_participants + _record_witnesses < PARTICIPANT_LIMIT, "oob"); |
900 |
int np = _num_participants++; |
|
901 |
_participants[np] = participant; |
|
902 |
_participants[np+1] = NULL; |
|
903 |
_found_methods[np+1] = NULL; |
|
904 |
} |
|
905 |
||
906 |
void record_witnesses(int add) { |
|
907 |
if (add > PARTICIPANT_LIMIT) add = PARTICIPANT_LIMIT; |
|
908 |
assert(_num_participants + add < PARTICIPANT_LIMIT, "oob"); |
|
909 |
_record_witnesses = add; |
|
910 |
} |
|
911 |
||
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changeset
|
912 |
bool is_witness(Klass* k) { |
1 | 913 |
if (doing_subtype_search()) { |
914 |
return Dependencies::is_concrete_klass(k); |
|
27700
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8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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diff
changeset
|
915 |
} else if (!k->oop_is_instance()) { |
a402738ebfcf
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diff
changeset
|
916 |
return false; // no methods to find in an array type |
1 | 917 |
} else { |
28514 | 918 |
// Search class hierarchy first. |
919 |
Method* m = InstanceKlass::cast(k)->find_instance_method(_name, _signature); |
|
920 |
if (!Dependencies::is_concrete_method(m, k)) { |
|
921 |
// Check interface defaults also, if any exist. |
|
922 |
Array<Method*>* default_methods = InstanceKlass::cast(k)->default_methods(); |
|
923 |
if (default_methods == NULL) |
|
924 |
return false; |
|
925 |
m = InstanceKlass::cast(k)->find_method(default_methods, _name, _signature); |
|
926 |
if (!Dependencies::is_concrete_method(m, NULL)) |
|
927 |
return false; |
|
928 |
} |
|
1 | 929 |
_found_methods[_num_participants] = m; |
930 |
// Note: If add_participant(k) is called, |
|
931 |
// the method m will already be memoized for it. |
|
932 |
return true; |
|
933 |
} |
|
934 |
} |
|
935 |
||
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changeset
|
936 |
bool is_participant(Klass* k) { |
1 | 937 |
if (k == _participants[0]) { |
938 |
return true; |
|
939 |
} else if (_num_participants <= 1) { |
|
940 |
return false; |
|
941 |
} else { |
|
942 |
return in_list(k, &_participants[1]); |
|
943 |
} |
|
944 |
} |
|
13728
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changeset
|
945 |
bool ignore_witness(Klass* witness) { |
1 | 946 |
if (_record_witnesses == 0) { |
947 |
return false; |
|
948 |
} else { |
|
949 |
--_record_witnesses; |
|
950 |
add_participant(witness); |
|
951 |
return true; |
|
952 |
} |
|
953 |
} |
|
13728
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changeset
|
954 |
static bool in_list(Klass* x, Klass** list) { |
1 | 955 |
for (int i = 0; ; i++) { |
13728
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changeset
|
956 |
Klass* y = list[i]; |
1 | 957 |
if (y == NULL) break; |
958 |
if (y == x) return true; |
|
959 |
} |
|
960 |
return false; // not in list |
|
961 |
} |
|
962 |
||
963 |
private: |
|
964 |
// the actual search method: |
|
13728
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changeset
|
965 |
Klass* find_witness_anywhere(Klass* context_type, |
1 | 966 |
bool participants_hide_witnesses, |
967 |
bool top_level_call = true); |
|
968 |
// the spot-checking version: |
|
13728
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changeset
|
969 |
Klass* find_witness_in(KlassDepChange& changes, |
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changeset
|
970 |
Klass* context_type, |
1 | 971 |
bool participants_hide_witnesses); |
972 |
public: |
|
13728
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coleenp
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changeset
|
973 |
Klass* find_witness_subtype(Klass* context_type, KlassDepChange* changes = NULL) { |
1 | 974 |
assert(doing_subtype_search(), "must set up a subtype search"); |
975 |
// When looking for unexpected concrete types, |
|
976 |
// do not look beneath expected ones. |
|
977 |
const bool participants_hide_witnesses = true; |
|
978 |
// CX > CC > C' is OK, even if C' is new. |
|
979 |
// CX > { CC, C' } is not OK if C' is new, and C' is the witness. |
|
980 |
if (changes != NULL) { |
|
981 |
return find_witness_in(*changes, context_type, participants_hide_witnesses); |
|
982 |
} else { |
|
983 |
return find_witness_anywhere(context_type, participants_hide_witnesses); |
|
984 |
} |
|
985 |
} |
|
13728
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diff
changeset
|
986 |
Klass* find_witness_definer(Klass* context_type, KlassDepChange* changes = NULL) { |
1 | 987 |
assert(!doing_subtype_search(), "must set up a method definer search"); |
988 |
// When looking for unexpected concrete methods, |
|
989 |
// look beneath expected ones, to see if there are overrides. |
|
990 |
const bool participants_hide_witnesses = true; |
|
991 |
// CX.m > CC.m > C'.m is not OK, if C'.m is new, and C' is the witness. |
|
992 |
if (changes != NULL) { |
|
993 |
return find_witness_in(*changes, context_type, !participants_hide_witnesses); |
|
994 |
} else { |
|
995 |
return find_witness_anywhere(context_type, !participants_hide_witnesses); |
|
996 |
} |
|
997 |
} |
|
998 |
}; |
|
999 |
||
1000 |
#ifndef PRODUCT |
|
1001 |
static int deps_find_witness_calls = 0; |
|
1002 |
static int deps_find_witness_steps = 0; |
|
1003 |
static int deps_find_witness_recursions = 0; |
|
1004 |
static int deps_find_witness_singles = 0; |
|
1005 |
static int deps_find_witness_print = 0; // set to -1 to force a final print |
|
1006 |
static bool count_find_witness_calls() { |
|
1007 |
if (TraceDependencies || LogCompilation) { |
|
1008 |
int pcount = deps_find_witness_print + 1; |
|
1009 |
bool final_stats = (pcount == 0); |
|
1010 |
bool initial_call = (pcount == 1); |
|
1011 |
bool occasional_print = ((pcount & ((1<<10) - 1)) == 0); |
|
1012 |
if (pcount < 0) pcount = 1; // crude overflow protection |
|
1013 |
deps_find_witness_print = pcount; |
|
1014 |
if (VerifyDependencies && initial_call) { |
|
1015 |
tty->print_cr("Warning: TraceDependencies results may be inflated by VerifyDependencies"); |
|
1016 |
} |
|
1017 |
if (occasional_print || final_stats) { |
|
1018 |
// Every now and then dump a little info about dependency searching. |
|
1019 |
if (xtty != NULL) { |
|
4754
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diff
changeset
|
1020 |
ttyLocker ttyl; |
8aef16f24e16
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parents:
4493
diff
changeset
|
1021 |
xtty->elem("deps_find_witness calls='%d' steps='%d' recursions='%d' singles='%d'", |
1 | 1022 |
deps_find_witness_calls, |
1023 |
deps_find_witness_steps, |
|
1024 |
deps_find_witness_recursions, |
|
1025 |
deps_find_witness_singles); |
|
1026 |
} |
|
1027 |
if (final_stats || (TraceDependencies && WizardMode)) { |
|
4754
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6614597: Performance variability in jvm2008 xml.validation
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parents:
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diff
changeset
|
1028 |
ttyLocker ttyl; |
1 | 1029 |
tty->print_cr("Dependency check (find_witness) " |
1030 |
"calls=%d, steps=%d (avg=%.1f), recursions=%d, singles=%d", |
|
1031 |
deps_find_witness_calls, |
|
1032 |
deps_find_witness_steps, |
|
1033 |
(double)deps_find_witness_steps / deps_find_witness_calls, |
|
1034 |
deps_find_witness_recursions, |
|
1035 |
deps_find_witness_singles); |
|
1036 |
} |
|
1037 |
} |
|
1038 |
return true; |
|
1039 |
} |
|
1040 |
return false; |
|
1041 |
} |
|
1042 |
#else |
|
1043 |
#define count_find_witness_calls() (0) |
|
1044 |
#endif //PRODUCT |
|
1045 |
||
1046 |
||
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diff
changeset
|
1047 |
Klass* ClassHierarchyWalker::find_witness_in(KlassDepChange& changes, |
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changeset
|
1048 |
Klass* context_type, |
1 | 1049 |
bool participants_hide_witnesses) { |
1050 |
assert(changes.involves_context(context_type), "irrelevant dependency"); |
|
13728
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diff
changeset
|
1051 |
Klass* new_type = changes.new_type(); |
1 | 1052 |
|
18073
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8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
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diff
changeset
|
1053 |
(void)count_find_witness_calls(); |
1 | 1054 |
NOT_PRODUCT(deps_find_witness_singles++); |
1055 |
||
1056 |
// Current thread must be in VM (not native mode, as in CI): |
|
1057 |
assert(must_be_in_vm(), "raw oops here"); |
|
1058 |
// Must not move the class hierarchy during this check: |
|
1059 |
assert_locked_or_safepoint(Compile_lock); |
|
1060 |
||
13728
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changeset
|
1061 |
int nof_impls = InstanceKlass::cast(context_type)->nof_implementors(); |
203 | 1062 |
if (nof_impls > 1) { |
1063 |
// Avoid this case: *I.m > { A.m, C }; B.m > C |
|
1064 |
// %%% Until this is fixed more systematically, bail out. |
|
1065 |
// See corresponding comment in find_witness_anywhere. |
|
1066 |
return context_type; |
|
1067 |
} |
|
1068 |
||
1 | 1069 |
assert(!is_participant(new_type), "only old classes are participants"); |
1070 |
if (participants_hide_witnesses) { |
|
1071 |
// If the new type is a subtype of a participant, we are done. |
|
1072 |
for (int i = 0; i < num_participants(); i++) { |
|
13728
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12369
diff
changeset
|
1073 |
Klass* part = participant(i); |
1 | 1074 |
if (part == NULL) continue; |
14488 | 1075 |
assert(changes.involves_context(part) == new_type->is_subtype_of(part), |
1 | 1076 |
"correct marking of participants, b/c new_type is unique"); |
1077 |
if (changes.involves_context(part)) { |
|
1078 |
// new guy is protected from this check by previous participant |
|
1079 |
return NULL; |
|
1080 |
} |
|
1081 |
} |
|
1082 |
} |
|
1083 |
||
1084 |
if (is_witness(new_type) && |
|
1085 |
!ignore_witness(new_type)) { |
|
1086 |
return new_type; |
|
1087 |
} |
|
1088 |
||
1089 |
return NULL; |
|
1090 |
} |
|
1091 |
||
1092 |
||
1093 |
// Walk hierarchy under a context type, looking for unexpected types. |
|
1094 |
// Do not report participant types, and recursively walk beneath |
|
1095 |
// them only if participants_hide_witnesses is false. |
|
1096 |
// If top_level_call is false, skip testing the context type, |
|
1097 |
// because the caller has already considered it. |
|
13728
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
1098 |
Klass* ClassHierarchyWalker::find_witness_anywhere(Klass* context_type, |
1 | 1099 |
bool participants_hide_witnesses, |
1100 |
bool top_level_call) { |
|
1101 |
// Current thread must be in VM (not native mode, as in CI): |
|
1102 |
assert(must_be_in_vm(), "raw oops here"); |
|
1103 |
// Must not move the class hierarchy during this check: |
|
1104 |
assert_locked_or_safepoint(Compile_lock); |
|
1105 |
||
1106 |
bool do_counts = count_find_witness_calls(); |
|
1107 |
||
1108 |
// Check the root of the sub-hierarchy first. |
|
1109 |
if (top_level_call) { |
|
1110 |
if (do_counts) { |
|
1111 |
NOT_PRODUCT(deps_find_witness_calls++); |
|
1112 |
NOT_PRODUCT(deps_find_witness_steps++); |
|
1113 |
} |
|
1114 |
if (is_participant(context_type)) { |
|
1115 |
if (participants_hide_witnesses) return NULL; |
|
1116 |
// else fall through to search loop... |
|
1117 |
} else if (is_witness(context_type) && !ignore_witness(context_type)) { |
|
1118 |
// The context is an abstract class or interface, to start with. |
|
1119 |
return context_type; |
|
1120 |
} |
|
1121 |
} |
|
1122 |
||
1123 |
// Now we must check each implementor and each subclass. |
|
1124 |
// Use a short worklist to avoid blowing the stack. |
|
1125 |
// Each worklist entry is a *chain* of subklass siblings to process. |
|
13728
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diff
changeset
|
1126 |
const int CHAINMAX = 100; // >= 1 + InstanceKlass::implementors_limit |
1 | 1127 |
Klass* chains[CHAINMAX]; |
1128 |
int chaini = 0; // index into worklist |
|
1129 |
Klass* chain; // scratch variable |
|
1130 |
#define ADD_SUBCLASS_CHAIN(k) { \ |
|
1131 |
assert(chaini < CHAINMAX, "oob"); \ |
|
27700
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
26914
diff
changeset
|
1132 |
chain = k->subklass(); \ |
1 | 1133 |
if (chain != NULL) chains[chaini++] = chain; } |
1134 |
||
1135 |
// Look for non-abstract subclasses. |
|
1136 |
// (Note: Interfaces do not have subclasses.) |
|
1137 |
ADD_SUBCLASS_CHAIN(context_type); |
|
1138 |
||
1139 |
// If it is an interface, search its direct implementors. |
|
1140 |
// (Their subclasses are additional indirect implementors. |
|
13728
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diff
changeset
|
1141 |
// See InstanceKlass::add_implementor.) |
1 | 1142 |
// (Note: nof_implementors is always zero for non-interfaces.) |
27700
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1143 |
if (top_level_call) { |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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diff
changeset
|
1144 |
int nof_impls = InstanceKlass::cast(context_type)->nof_implementors(); |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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diff
changeset
|
1145 |
if (nof_impls > 1) { |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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diff
changeset
|
1146 |
// Avoid this case: *I.m > { A.m, C }; B.m > C |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1147 |
// Here, I.m has 2 concrete implementations, but m appears unique |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1148 |
// as A.m, because the search misses B.m when checking C. |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
thartmann
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diff
changeset
|
1149 |
// The inherited method B.m was getting missed by the walker |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1150 |
// when interface 'I' was the starting point. |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1151 |
// %%% Until this is fixed more systematically, bail out. |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1152 |
// (Old CHA had the same limitation.) |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1153 |
return context_type; |
1 | 1154 |
} |
27700
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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diff
changeset
|
1155 |
if (nof_impls > 0) { |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
26914
diff
changeset
|
1156 |
Klass* impl = InstanceKlass::cast(context_type)->implementor(); |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
26914
diff
changeset
|
1157 |
assert(impl != NULL, "just checking"); |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1158 |
// If impl is the same as the context_type, then more than one |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1159 |
// implementor has seen. No exact info in this case. |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1160 |
if (impl == context_type) { |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1161 |
return context_type; // report an inexact witness to this sad affair |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1162 |
} |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1163 |
if (do_counts) |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1164 |
{ NOT_PRODUCT(deps_find_witness_steps++); } |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1165 |
if (is_participant(impl)) { |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1166 |
if (!participants_hide_witnesses) { |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1167 |
ADD_SUBCLASS_CHAIN(impl); |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
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parents:
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diff
changeset
|
1168 |
} |
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26914
diff
changeset
|
1169 |
} else if (is_witness(impl) && !ignore_witness(impl)) { |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
thartmann
parents:
26914
diff
changeset
|
1170 |
return impl; |
a402738ebfcf
8050079: crash while compiling java.lang.ref.Finalizer::runFinalizer
thartmann
parents:
26914
diff
changeset
|
1171 |
} else { |
12369
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
11440
diff
changeset
|
1172 |
ADD_SUBCLASS_CHAIN(impl); |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
11440
diff
changeset
|
1173 |
} |
1 | 1174 |
} |
1175 |
} |
|
1176 |
||
1177 |
// Recursively process each non-trivial sibling chain. |
|
1178 |
while (chaini > 0) { |
|
1179 |
Klass* chain = chains[--chaini]; |
|
13728
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coleenp
parents:
12369
diff
changeset
|
1180 |
for (Klass* sub = chain; sub != NULL; sub = sub->next_sibling()) { |
1 | 1181 |
if (do_counts) { NOT_PRODUCT(deps_find_witness_steps++); } |
1182 |
if (is_participant(sub)) { |
|
1183 |
if (participants_hide_witnesses) continue; |
|
1184 |
// else fall through to process this guy's subclasses |
|
1185 |
} else if (is_witness(sub) && !ignore_witness(sub)) { |
|
1186 |
return sub; |
|
1187 |
} |
|
1188 |
if (chaini < (VerifyDependencies? 2: CHAINMAX)) { |
|
1189 |
// Fast path. (Partially disabled if VerifyDependencies.) |
|
1190 |
ADD_SUBCLASS_CHAIN(sub); |
|
1191 |
} else { |
|
1192 |
// Worklist overflow. Do a recursive call. Should be rare. |
|
1193 |
// The recursive call will have its own worklist, of course. |
|
1194 |
// (Note that sub has already been tested, so that there is |
|
1195 |
// no need for the recursive call to re-test. That's handy, |
|
1196 |
// since the recursive call sees sub as the context_type.) |
|
1197 |
if (do_counts) { NOT_PRODUCT(deps_find_witness_recursions++); } |
|
13728
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diff
changeset
|
1198 |
Klass* witness = find_witness_anywhere(sub, |
1 | 1199 |
participants_hide_witnesses, |
1200 |
/*top_level_call=*/ false); |
|
1201 |
if (witness != NULL) return witness; |
|
1202 |
} |
|
1203 |
} |
|
1204 |
} |
|
1205 |
||
1206 |
// No witness found. The dependency remains unbroken. |
|
1207 |
return NULL; |
|
1208 |
#undef ADD_SUBCLASS_CHAIN |
|
1209 |
} |
|
1210 |
||
1211 |
||
13728
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diff
changeset
|
1212 |
bool Dependencies::is_concrete_klass(Klass* k) { |
14488 | 1213 |
if (k->is_abstract()) return false; |
1 | 1214 |
// %%% We could treat classes which are concrete but |
1215 |
// have not yet been instantiated as virtually abstract. |
|
1216 |
// This would require a deoptimization barrier on first instantiation. |
|
1217 |
//if (k->is_not_instantiated()) return false; |
|
1218 |
return true; |
|
1219 |
} |
|
1220 |
||
28514 | 1221 |
bool Dependencies::is_concrete_method(Method* m, Klass * k) { |
1222 |
// NULL is not a concrete method, |
|
1223 |
// statics are irrelevant to virtual call sites, |
|
1224 |
// abstract methods are not concrete, |
|
1225 |
// overpass (error) methods are not concrete if k is abstract |
|
1226 |
// |
|
1227 |
// note "true" is conservative answer -- |
|
1228 |
// overpass clause is false if k == NULL, implies return true if |
|
1229 |
// answer depends on overpass clause. |
|
1230 |
return ! ( m == NULL || m -> is_static() || m -> is_abstract() || |
|
1231 |
m->is_overpass() && k != NULL && k -> is_abstract() ); |
|
1 | 1232 |
} |
1233 |
||
1234 |
||
1235 |
Klass* Dependencies::find_finalizable_subclass(Klass* k) { |
|
1236 |
if (k->is_interface()) return NULL; |
|
1237 |
if (k->has_finalizer()) return k; |
|
1238 |
k = k->subklass(); |
|
1239 |
while (k != NULL) { |
|
1240 |
Klass* result = find_finalizable_subclass(k); |
|
1241 |
if (result != NULL) return result; |
|
1242 |
k = k->next_sibling(); |
|
1243 |
} |
|
1244 |
return NULL; |
|
1245 |
} |
|
1246 |
||
1247 |
||
1248 |
bool Dependencies::is_concrete_klass(ciInstanceKlass* k) { |
|
1249 |
if (k->is_abstract()) return false; |
|
10984
bca73db4935e
7105305: assert check_method_context proper context
never
parents:
10503
diff
changeset
|
1250 |
// We could also return false if k does not yet appear to be |
1 | 1251 |
// instantiated, if the VM version supports this distinction also. |
1252 |
//if (k->is_not_instantiated()) return false; |
|
1253 |
return true; |
|
1254 |
} |
|
1255 |
||
1256 |
bool Dependencies::has_finalizable_subclass(ciInstanceKlass* k) { |
|
1257 |
return k->has_finalizable_subclass(); |
|
1258 |
} |
|
1259 |
||
1260 |
||
1261 |
// Any use of the contents (bytecodes) of a method must be |
|
1262 |
// marked by an "evol_method" dependency, if those contents |
|
1263 |
// can change. (Note: A method is always dependent on itself.) |
|
13728
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parents:
12369
diff
changeset
|
1264 |
Klass* Dependencies::check_evol_method(Method* m) { |
1 | 1265 |
assert(must_be_in_vm(), "raw oops here"); |
1266 |
// Did somebody do a JVMTI RedefineClasses while our backs were turned? |
|
1267 |
// Or is there a now a breakpoint? |
|
1268 |
// (Assumes compiled code cannot handle bkpts; change if UseFastBreakpoints.) |
|
1269 |
if (m->is_old() |
|
1270 |
|| m->number_of_breakpoints() > 0) { |
|
1271 |
return m->method_holder(); |
|
1272 |
} else { |
|
1273 |
return NULL; |
|
1274 |
} |
|
1275 |
} |
|
1276 |
||
1277 |
// This is a strong assertion: It is that the given type |
|
1278 |
// has no subtypes whatever. It is most useful for |
|
1279 |
// optimizing checks on reflected types or on array types. |
|
1280 |
// (Checks on types which are derived from real instances |
|
1281 |
// can be optimized more strongly than this, because we |
|
1282 |
// know that the checked type comes from a concrete type, |
|
1283 |
// and therefore we can disregard abstract types.) |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1284 |
Klass* Dependencies::check_leaf_type(Klass* ctxk) { |
1 | 1285 |
assert(must_be_in_vm(), "raw oops here"); |
1286 |
assert_locked_or_safepoint(Compile_lock); |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1287 |
InstanceKlass* ctx = InstanceKlass::cast(ctxk); |
1 | 1288 |
Klass* sub = ctx->subklass(); |
1289 |
if (sub != NULL) { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1290 |
return sub; |
1 | 1291 |
} else if (ctx->nof_implementors() != 0) { |
1292 |
// if it is an interface, it must be unimplemented |
|
1293 |
// (if it is not an interface, nof_implementors is always zero) |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1294 |
Klass* impl = ctx->implementor(); |
12369
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
11440
diff
changeset
|
1295 |
assert(impl != NULL, "must be set"); |
48fd3da4025c
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
11440
diff
changeset
|
1296 |
return impl; |
1 | 1297 |
} else { |
1298 |
return NULL; |
|
1299 |
} |
|
1300 |
} |
|
1301 |
||
1302 |
// Test the assertion that conck is the only concrete subtype* of ctxk. |
|
1303 |
// The type conck itself is allowed to have have further concrete subtypes. |
|
1304 |
// This allows the compiler to narrow occurrences of ctxk by conck, |
|
1305 |
// when dealing with the types of actual instances. |
|
13728
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1306 |
Klass* Dependencies::check_abstract_with_unique_concrete_subtype(Klass* ctxk, |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1307 |
Klass* conck, |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1308 |
KlassDepChange* changes) { |
1 | 1309 |
ClassHierarchyWalker wf(conck); |
1310 |
return wf.find_witness_subtype(ctxk, changes); |
|
1311 |
} |
|
1312 |
||
1313 |
// If a non-concrete class has no concrete subtypes, it is not (yet) |
|
1314 |
// instantiatable. This can allow the compiler to make some paths go |
|
1315 |
// dead, if they are gated by a test of the type. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1316 |
Klass* Dependencies::check_abstract_with_no_concrete_subtype(Klass* ctxk, |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1317 |
KlassDepChange* changes) { |
1 | 1318 |
// Find any concrete subtype, with no participants: |
1319 |
ClassHierarchyWalker wf; |
|
1320 |
return wf.find_witness_subtype(ctxk, changes); |
|
1321 |
} |
|
1322 |
||
1323 |
||
1324 |
// If a concrete class has no concrete subtypes, it can always be |
|
1325 |
// exactly typed. This allows the use of a cheaper type test. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1326 |
Klass* Dependencies::check_concrete_with_no_concrete_subtype(Klass* ctxk, |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1327 |
KlassDepChange* changes) { |
1 | 1328 |
// Find any concrete subtype, with only the ctxk as participant: |
1329 |
ClassHierarchyWalker wf(ctxk); |
|
1330 |
return wf.find_witness_subtype(ctxk, changes); |
|
1331 |
} |
|
1332 |
||
1333 |
||
1334 |
// Find the unique concrete proper subtype of ctxk, or NULL if there |
|
1335 |
// is more than one concrete proper subtype. If there are no concrete |
|
1336 |
// proper subtypes, return ctxk itself, whether it is concrete or not. |
|
1337 |
// The returned subtype is allowed to have have further concrete subtypes. |
|
1338 |
// That is, return CC1 for CX > CC1 > CC2, but NULL for CX > { CC1, CC2 }. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1339 |
Klass* Dependencies::find_unique_concrete_subtype(Klass* ctxk) { |
1 | 1340 |
ClassHierarchyWalker wf(ctxk); // Ignore ctxk when walking. |
1341 |
wf.record_witnesses(1); // Record one other witness when walking. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1342 |
Klass* wit = wf.find_witness_subtype(ctxk); |
1 | 1343 |
if (wit != NULL) return NULL; // Too many witnesses. |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1344 |
Klass* conck = wf.participant(0); |
1 | 1345 |
if (conck == NULL) { |
1346 |
#ifndef PRODUCT |
|
1347 |
// Make sure the dependency mechanism will pass this discovery: |
|
1348 |
if (VerifyDependencies) { |
|
1349 |
// Turn off dependency tracing while actually testing deps. |
|
1350 |
FlagSetting fs(TraceDependencies, false); |
|
1351 |
if (!Dependencies::is_concrete_klass(ctxk)) { |
|
1352 |
guarantee(NULL == |
|
1353 |
(void *)check_abstract_with_no_concrete_subtype(ctxk), |
|
1354 |
"verify dep."); |
|
1355 |
} else { |
|
1356 |
guarantee(NULL == |
|
1357 |
(void *)check_concrete_with_no_concrete_subtype(ctxk), |
|
1358 |
"verify dep."); |
|
1359 |
} |
|
1360 |
} |
|
1361 |
#endif //PRODUCT |
|
1362 |
return ctxk; // Return ctxk as a flag for "no subtypes". |
|
1363 |
} else { |
|
1364 |
#ifndef PRODUCT |
|
1365 |
// Make sure the dependency mechanism will pass this discovery: |
|
1366 |
if (VerifyDependencies) { |
|
1367 |
// Turn off dependency tracing while actually testing deps. |
|
1368 |
FlagSetting fs(TraceDependencies, false); |
|
1369 |
if (!Dependencies::is_concrete_klass(ctxk)) { |
|
1370 |
guarantee(NULL == (void *) |
|
1371 |
check_abstract_with_unique_concrete_subtype(ctxk, conck), |
|
1372 |
"verify dep."); |
|
1373 |
} |
|
1374 |
} |
|
1375 |
#endif //PRODUCT |
|
1376 |
return conck; |
|
1377 |
} |
|
1378 |
} |
|
1379 |
||
1380 |
// Test the assertion that the k[12] are the only concrete subtypes of ctxk, |
|
1381 |
// except possibly for further subtypes of k[12] themselves. |
|
1382 |
// The context type must be abstract. The types k1 and k2 are themselves |
|
1383 |
// allowed to have further concrete subtypes. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1384 |
Klass* Dependencies::check_abstract_with_exclusive_concrete_subtypes( |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1385 |
Klass* ctxk, |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1386 |
Klass* k1, |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1387 |
Klass* k2, |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1388 |
KlassDepChange* changes) { |
1 | 1389 |
ClassHierarchyWalker wf; |
1390 |
wf.add_participant(k1); |
|
1391 |
wf.add_participant(k2); |
|
1392 |
return wf.find_witness_subtype(ctxk, changes); |
|
1393 |
} |
|
1394 |
||
1395 |
// Search ctxk for concrete implementations. If there are klen or fewer, |
|
1396 |
// pack them into the given array and return the number. |
|
1397 |
// Otherwise, return -1, meaning the given array would overflow. |
|
1398 |
// (Note that a return of 0 means there are exactly no concrete subtypes.) |
|
1399 |
// In this search, if ctxk is concrete, it will be reported alone. |
|
1400 |
// For any type CC reported, no proper subtypes of CC will be reported. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1401 |
int Dependencies::find_exclusive_concrete_subtypes(Klass* ctxk, |
1 | 1402 |
int klen, |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1403 |
Klass* karray[]) { |
1 | 1404 |
ClassHierarchyWalker wf; |
1405 |
wf.record_witnesses(klen); |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1406 |
Klass* wit = wf.find_witness_subtype(ctxk); |
1 | 1407 |
if (wit != NULL) return -1; // Too many witnesses. |
1408 |
int num = wf.num_participants(); |
|
1409 |
assert(num <= klen, "oob"); |
|
1410 |
// Pack the result array with the good news. |
|
1411 |
for (int i = 0; i < num; i++) |
|
1412 |
karray[i] = wf.participant(i); |
|
1413 |
#ifndef PRODUCT |
|
1414 |
// Make sure the dependency mechanism will pass this discovery: |
|
1415 |
if (VerifyDependencies) { |
|
1416 |
// Turn off dependency tracing while actually testing deps. |
|
1417 |
FlagSetting fs(TraceDependencies, false); |
|
1418 |
switch (Dependencies::is_concrete_klass(ctxk)? -1: num) { |
|
1419 |
case -1: // ctxk was itself concrete |
|
1420 |
guarantee(num == 1 && karray[0] == ctxk, "verify dep."); |
|
1421 |
break; |
|
1422 |
case 0: |
|
1423 |
guarantee(NULL == (void *)check_abstract_with_no_concrete_subtype(ctxk), |
|
1424 |
"verify dep."); |
|
1425 |
break; |
|
1426 |
case 1: |
|
1427 |
guarantee(NULL == (void *) |
|
1428 |
check_abstract_with_unique_concrete_subtype(ctxk, karray[0]), |
|
1429 |
"verify dep."); |
|
1430 |
break; |
|
1431 |
case 2: |
|
1432 |
guarantee(NULL == (void *) |
|
1433 |
check_abstract_with_exclusive_concrete_subtypes(ctxk, |
|
1434 |
karray[0], |
|
1435 |
karray[1]), |
|
1436 |
"verify dep."); |
|
1437 |
break; |
|
1438 |
default: |
|
1439 |
ShouldNotReachHere(); // klen > 2 yet supported |
|
1440 |
} |
|
1441 |
} |
|
1442 |
#endif //PRODUCT |
|
1443 |
return num; |
|
1444 |
} |
|
1445 |
||
1446 |
// If a class (or interface) has a unique concrete method uniqm, return NULL. |
|
1447 |
// Otherwise, return a class that contains an interfering method. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1448 |
Klass* Dependencies::check_unique_concrete_method(Klass* ctxk, Method* uniqm, |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1449 |
KlassDepChange* changes) { |
1 | 1450 |
// Here is a missing optimization: If uniqm->is_final(), |
1451 |
// we don't really need to search beneath it for overrides. |
|
1452 |
// This is probably not important, since we don't use dependencies |
|
1453 |
// to track final methods. (They can't be "definalized".) |
|
1454 |
ClassHierarchyWalker wf(uniqm->method_holder(), uniqm); |
|
1455 |
return wf.find_witness_definer(ctxk, changes); |
|
1456 |
} |
|
1457 |
||
1458 |
// Find the set of all non-abstract methods under ctxk that match m. |
|
1459 |
// (The method m must be defined or inherited in ctxk.) |
|
1460 |
// Include m itself in the set, unless it is abstract. |
|
1461 |
// If this set has exactly one element, return that element. |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1462 |
Method* Dependencies::find_unique_concrete_method(Klass* ctxk, Method* m) { |
24484
4a37a32e36a9
6563994: assert(wf.check_method_context(ctxk, m), "proper context") failed
bharadwaj
parents:
24351
diff
changeset
|
1463 |
// Return NULL if m is marked old; must have been a redefined method. |
4a37a32e36a9
6563994: assert(wf.check_method_context(ctxk, m), "proper context") failed
bharadwaj
parents:
24351
diff
changeset
|
1464 |
if (m->is_old()) { |
4a37a32e36a9
6563994: assert(wf.check_method_context(ctxk, m), "proper context") failed
bharadwaj
parents:
24351
diff
changeset
|
1465 |
return NULL; |
4a37a32e36a9
6563994: assert(wf.check_method_context(ctxk, m), "proper context") failed
bharadwaj
parents:
24351
diff
changeset
|
1466 |
} |
1 | 1467 |
ClassHierarchyWalker wf(m); |
1468 |
assert(wf.check_method_context(ctxk, m), "proper context"); |
|
1469 |
wf.record_witnesses(1); |
|
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changeset
|
1470 |
Klass* wit = wf.find_witness_definer(ctxk); |
1 | 1471 |
if (wit != NULL) return NULL; // Too many witnesses. |
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diff
changeset
|
1472 |
Method* fm = wf.found_method(0); // Will be NULL if num_parts == 0. |
28514 | 1473 |
if (Dependencies::is_concrete_method(m, ctxk)) { |
1 | 1474 |
if (fm == NULL) { |
1475 |
// It turns out that m was always the only implementation. |
|
1476 |
fm = m; |
|
1477 |
} else if (fm != m) { |
|
1478 |
// Two conflicting implementations after all. |
|
1479 |
// (This can happen if m is inherited into ctxk and fm overrides it.) |
|
1480 |
return NULL; |
|
1481 |
} |
|
1482 |
} |
|
1483 |
#ifndef PRODUCT |
|
1484 |
// Make sure the dependency mechanism will pass this discovery: |
|
1485 |
if (VerifyDependencies && fm != NULL) { |
|
1486 |
guarantee(NULL == (void *)check_unique_concrete_method(ctxk, fm), |
|
1487 |
"verify dep."); |
|
1488 |
} |
|
1489 |
#endif //PRODUCT |
|
1490 |
return fm; |
|
1491 |
} |
|
1492 |
||
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diff
changeset
|
1493 |
Klass* Dependencies::check_exclusive_concrete_methods(Klass* ctxk, |
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changeset
|
1494 |
Method* m1, |
882756847a04
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diff
changeset
|
1495 |
Method* m2, |
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changeset
|
1496 |
KlassDepChange* changes) { |
1 | 1497 |
ClassHierarchyWalker wf(m1); |
1498 |
wf.add_participant(m1->method_holder()); |
|
1499 |
wf.add_participant(m2->method_holder()); |
|
1500 |
return wf.find_witness_definer(ctxk, changes); |
|
1501 |
} |
|
1502 |
||
13728
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diff
changeset
|
1503 |
Klass* Dependencies::check_has_no_finalizable_subclasses(Klass* ctxk, KlassDepChange* changes) { |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
1504 |
Klass* search_at = ctxk; |
1 | 1505 |
if (changes != NULL) |
13728
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
1506 |
search_at = changes->new_type(); // just look at the new bit |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
1507 |
return find_finalizable_subclass(search_at); |
1 | 1508 |
} |
1509 |
||
13728
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diff
changeset
|
1510 |
Klass* Dependencies::check_call_site_target_value(oop call_site, oop method_handle, CallSiteDepChange* changes) { |
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changeset
|
1511 |
assert(call_site ->is_a(SystemDictionary::CallSite_klass()), "sanity"); |
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diff
changeset
|
1512 |
assert(method_handle->is_a(SystemDictionary::MethodHandle_klass()), "sanity"); |
4c869854aebd
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parents:
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diff
changeset
|
1513 |
if (changes == NULL) { |
4c869854aebd
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parents:
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diff
changeset
|
1514 |
// Validate all CallSites |
4c869854aebd
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diff
changeset
|
1515 |
if (java_lang_invoke_CallSite::target(call_site) != method_handle) |
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
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diff
changeset
|
1516 |
return call_site->klass(); // assertion failed |
10265
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7071653: JSR 292: call site change notification should be pushed not pulled
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diff
changeset
|
1517 |
} else { |
4c869854aebd
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parents:
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diff
changeset
|
1518 |
// Validate the given CallSite |
4c869854aebd
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twisti
parents:
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diff
changeset
|
1519 |
if (call_site == changes->call_site() && java_lang_invoke_CallSite::target(call_site) != changes->method_handle()) { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
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parents:
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diff
changeset
|
1520 |
assert(method_handle != changes->method_handle(), "must be"); |
10503
04b74421bdea
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
10265
diff
changeset
|
1521 |
return call_site->klass(); // assertion failed |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
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parents:
8921
diff
changeset
|
1522 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1523 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1524 |
return NULL; // assertion still valid |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1525 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1526 |
|
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1527 |
|
13728
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
1528 |
void Dependencies::DepStream::trace_and_log_witness(Klass* witness) { |
10265
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7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1529 |
if (witness != NULL) { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1530 |
if (TraceDependencies) { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1531 |
print_dependency(witness, /*verbose=*/ true); |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1532 |
} |
4c869854aebd
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parents:
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diff
changeset
|
1533 |
// The following is a no-op unless logging is enabled: |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1534 |
log_dependency(witness); |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1535 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1536 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1537 |
|
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1538 |
|
13728
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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
1539 |
Klass* Dependencies::DepStream::check_klass_dependency(KlassDepChange* changes) { |
1 | 1540 |
assert_locked_or_safepoint(Compile_lock); |
10265
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7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1541 |
Dependencies::check_valid_dependency_type(type()); |
1 | 1542 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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diff
changeset
|
1543 |
Klass* witness = NULL; |
1 | 1544 |
switch (type()) { |
1545 |
case evol_method: |
|
1546 |
witness = check_evol_method(method_argument(0)); |
|
1547 |
break; |
|
1548 |
case leaf_type: |
|
1549 |
witness = check_leaf_type(context_type()); |
|
1550 |
break; |
|
1551 |
case abstract_with_unique_concrete_subtype: |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1552 |
witness = check_abstract_with_unique_concrete_subtype(context_type(), type_argument(1), changes); |
1 | 1553 |
break; |
1554 |
case abstract_with_no_concrete_subtype: |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1555 |
witness = check_abstract_with_no_concrete_subtype(context_type(), changes); |
1 | 1556 |
break; |
1557 |
case concrete_with_no_concrete_subtype: |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1558 |
witness = check_concrete_with_no_concrete_subtype(context_type(), changes); |
1 | 1559 |
break; |
1560 |
case unique_concrete_method: |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1561 |
witness = check_unique_concrete_method(context_type(), method_argument(1), changes); |
1 | 1562 |
break; |
1563 |
case abstract_with_exclusive_concrete_subtypes_2: |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1564 |
witness = check_abstract_with_exclusive_concrete_subtypes(context_type(), type_argument(1), type_argument(2), changes); |
1 | 1565 |
break; |
1566 |
case exclusive_concrete_methods_2: |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1567 |
witness = check_exclusive_concrete_methods(context_type(), method_argument(1), method_argument(2), changes); |
1 | 1568 |
break; |
1569 |
case no_finalizable_subclasses: |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1570 |
witness = check_has_no_finalizable_subclasses(context_type(), changes); |
1 | 1571 |
break; |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1572 |
default: |
1 | 1573 |
witness = NULL; |
1574 |
break; |
|
1575 |
} |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1576 |
trace_and_log_witness(witness); |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1577 |
return witness; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1578 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1579 |
|
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1580 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1581 |
Klass* Dependencies::DepStream::check_call_site_dependency(CallSiteDepChange* changes) { |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1582 |
assert_locked_or_safepoint(Compile_lock); |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1583 |
Dependencies::check_valid_dependency_type(type()); |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1584 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1585 |
Klass* witness = NULL; |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1586 |
switch (type()) { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1587 |
case call_site_target_value: |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1588 |
witness = check_call_site_target_value(argument_oop(0), argument_oop(1), changes); |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1589 |
break; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1590 |
default: |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1591 |
witness = NULL; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1592 |
break; |
1 | 1593 |
} |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1594 |
trace_and_log_witness(witness); |
1 | 1595 |
return witness; |
1596 |
} |
|
1597 |
||
1598 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1599 |
Klass* Dependencies::DepStream::spot_check_dependency_at(DepChange& changes) { |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1600 |
// Handle klass dependency |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1601 |
if (changes.is_klass_change() && changes.as_klass_change()->involves_context(context_type())) |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1602 |
return check_klass_dependency(changes.as_klass_change()); |
1 | 1603 |
|
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1604 |
// Handle CallSite dependency |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1605 |
if (changes.is_call_site_change()) |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1606 |
return check_call_site_dependency(changes.as_call_site_change()); |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1607 |
|
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1608 |
// irrelevant dependency; skip it |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1609 |
return NULL; |
1 | 1610 |
} |
1611 |
||
1612 |
||
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1613 |
void DepChange::print() { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1614 |
int nsup = 0, nint = 0; |
1 | 1615 |
for (ContextStream str(*this); str.next(); ) { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1616 |
Klass* k = str.klass(); |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1617 |
switch (str.change_type()) { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1618 |
case Change_new_type: |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1619 |
tty->print_cr(" dependee = %s", InstanceKlass::cast(k)->external_name()); |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1620 |
break; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1621 |
case Change_new_sub: |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1622 |
if (!WizardMode) { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1623 |
++nsup; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1624 |
} else { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1625 |
tty->print_cr(" context super = %s", InstanceKlass::cast(k)->external_name()); |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1626 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1627 |
break; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1628 |
case Change_new_impl: |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1629 |
if (!WizardMode) { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1630 |
++nint; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1631 |
} else { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1632 |
tty->print_cr(" context interface = %s", InstanceKlass::cast(k)->external_name()); |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1633 |
} |
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7071653: JSR 292: call site change notification should be pushed not pulled
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parents:
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diff
changeset
|
1634 |
break; |
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7071653: JSR 292: call site change notification should be pushed not pulled
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parents:
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diff
changeset
|
1635 |
} |
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7071653: JSR 292: call site change notification should be pushed not pulled
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parents:
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diff
changeset
|
1636 |
} |
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diff
changeset
|
1637 |
if (nsup + nint != 0) { |
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changeset
|
1638 |
tty->print_cr(" context supers = %d, interfaces = %d", nsup, nint); |
1 | 1639 |
} |
1640 |
} |
|
1641 |
||
10265
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changeset
|
1642 |
void DepChange::ContextStream::start() { |
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
1643 |
Klass* new_type = _changes.is_klass_change() ? _changes.as_klass_change()->new_type() : (Klass*) NULL; |
10265
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changeset
|
1644 |
_change_type = (new_type == NULL ? NO_CHANGE : Start_Klass); |
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changeset
|
1645 |
_klass = new_type; |
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changeset
|
1646 |
_ti_base = NULL; |
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changeset
|
1647 |
_ti_index = 0; |
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changeset
|
1648 |
_ti_limit = 0; |
1 | 1649 |
} |
1650 |
||
1651 |
bool DepChange::ContextStream::next() { |
|
1652 |
switch (_change_type) { |
|
1653 |
case Start_Klass: // initial state; _klass is the new type |
|
13728
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diff
changeset
|
1654 |
_ti_base = InstanceKlass::cast(_klass)->transitive_interfaces(); |
1 | 1655 |
_ti_index = 0; |
1656 |
_change_type = Change_new_type; |
|
1657 |
return true; |
|
1658 |
case Change_new_type: |
|
1659 |
// fall through: |
|
1660 |
_change_type = Change_new_sub; |
|
1661 |
case Change_new_sub: |
|
227
1d53148d4a4c
6598190: JPRT tests fail when run with -XX:+CheckUnhandledOops
sbohne
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1
diff
changeset
|
1662 |
// 6598190: brackets workaround Sun Studio C++ compiler bug 6629277 |
1d53148d4a4c
6598190: JPRT tests fail when run with -XX:+CheckUnhandledOops
sbohne
parents:
1
diff
changeset
|
1663 |
{ |
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diff
changeset
|
1664 |
_klass = InstanceKlass::cast(_klass)->super(); |
227
1d53148d4a4c
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sbohne
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1
diff
changeset
|
1665 |
if (_klass != NULL) { |
1d53148d4a4c
6598190: JPRT tests fail when run with -XX:+CheckUnhandledOops
sbohne
parents:
1
diff
changeset
|
1666 |
return true; |
1d53148d4a4c
6598190: JPRT tests fail when run with -XX:+CheckUnhandledOops
sbohne
parents:
1
diff
changeset
|
1667 |
} |
1 | 1668 |
} |
1669 |
// else set up _ti_limit and fall through: |
|
1670 |
_ti_limit = (_ti_base == NULL) ? 0 : _ti_base->length(); |
|
1671 |
_change_type = Change_new_impl; |
|
1672 |
case Change_new_impl: |
|
1673 |
if (_ti_index < _ti_limit) { |
|
13728
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parents:
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diff
changeset
|
1674 |
_klass = _ti_base->at(_ti_index++); |
1 | 1675 |
return true; |
1676 |
} |
|
1677 |
// fall through: |
|
1678 |
_change_type = NO_CHANGE; // iterator is exhausted |
|
1679 |
case NO_CHANGE: |
|
1680 |
break; |
|
1681 |
default: |
|
1682 |
ShouldNotReachHere(); |
|
1683 |
} |
|
1684 |
return false; |
|
1685 |
} |
|
1686 |
||
10265
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diff
changeset
|
1687 |
void KlassDepChange::initialize() { |
4c869854aebd
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diff
changeset
|
1688 |
// entire transaction must be under this lock: |
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diff
changeset
|
1689 |
assert_lock_strong(Compile_lock); |
4c869854aebd
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twisti
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diff
changeset
|
1690 |
|
4c869854aebd
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diff
changeset
|
1691 |
// Mark all dependee and all its superclasses |
4c869854aebd
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twisti
parents:
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diff
changeset
|
1692 |
// Mark transitive interfaces |
1 | 1693 |
for (ContextStream str(*this); str.next(); ) { |
13728
882756847a04
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coleenp
parents:
12369
diff
changeset
|
1694 |
Klass* d = str.klass(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1695 |
assert(!InstanceKlass::cast(d)->is_marked_dependent(), "checking"); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1696 |
InstanceKlass::cast(d)->set_is_marked_dependent(true); |
1 | 1697 |
} |
10265
4c869854aebd
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parents:
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diff
changeset
|
1698 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1699 |
|
4c869854aebd
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parents:
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diff
changeset
|
1700 |
KlassDepChange::~KlassDepChange() { |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1701 |
// Unmark all dependee and all its superclasses |
4c869854aebd
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twisti
parents:
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diff
changeset
|
1702 |
// Unmark transitive interfaces |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1703 |
for (ContextStream str(*this); str.next(); ) { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1704 |
Klass* d = str.klass(); |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1705 |
InstanceKlass::cast(d)->set_is_marked_dependent(false); |
1 | 1706 |
} |
1707 |
} |
|
1708 |
||
13728
882756847a04
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coleenp
parents:
12369
diff
changeset
|
1709 |
bool KlassDepChange::involves_context(Klass* k) { |
14488 | 1710 |
if (k == NULL || !k->oop_is_instance()) { |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1711 |
return false; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1712 |
} |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
12369
diff
changeset
|
1713 |
InstanceKlass* ik = InstanceKlass::cast(k); |
10265
4c869854aebd
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twisti
parents:
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diff
changeset
|
1714 |
bool is_contained = ik->is_marked_dependent(); |
14488 | 1715 |
assert(is_contained == new_type()->is_subtype_of(k), |
10265
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
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diff
changeset
|
1716 |
"correct marking of potential context types"); |
4c869854aebd
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twisti
parents:
8921
diff
changeset
|
1717 |
return is_contained; |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
8921
diff
changeset
|
1718 |
} |
4c869854aebd
7071653: JSR 292: call site change notification should be pushed not pulled
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parents:
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diff
changeset
|
1719 |
|
1 | 1720 |
#ifndef PRODUCT |
1721 |
void Dependencies::print_statistics() { |
|
1722 |
if (deps_find_witness_print != 0) { |
|
1723 |
// Call one final time, to flush out the data. |
|
1724 |
deps_find_witness_print = -1; |
|
1725 |
count_find_witness_calls(); |
|
1726 |
} |
|
1727 |
} |
|
1728 |
#endif |