Mercurial > hg > graal-jvmci-8
annotate src/share/vm/code/compiledIC.cpp @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Mon, 18 Sep 2017 18:49:45 +0200 |
| parents | b5f3a471e646 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "code/codeCache.hpp" | |
| 28 #include "code/compiledIC.hpp" | |
| 29 #include "code/icBuffer.hpp" | |
| 30 #include "code/nmethod.hpp" | |
| 31 #include "code/vtableStubs.hpp" | |
| 32 #include "interpreter/interpreter.hpp" | |
| 33 #include "interpreter/linkResolver.hpp" | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
34 #include "memory/metadataFactory.hpp" |
| 1972 | 35 #include "memory/oopFactory.hpp" |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
36 #include "oops/method.hpp" |
| 1972 | 37 #include "oops/oop.inline.hpp" |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
38 #include "oops/symbol.hpp" |
| 1972 | 39 #include "runtime/icache.hpp" |
| 40 #include "runtime/sharedRuntime.hpp" | |
| 41 #include "runtime/stubRoutines.hpp" | |
| 42 #include "utilities/events.hpp" | |
| 0 | 43 |
| 44 | |
| 45 // Every time a compiled IC is changed or its type is being accessed, | |
| 46 // either the CompiledIC_lock must be set or we must be at a safe point. | |
| 47 | |
| 48 //----------------------------------------------------------------------------- | |
| 49 // Low-level access to an inline cache. Private, since they might not be | |
| 50 // MT-safe to use. | |
| 51 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
52 void* CompiledIC::cached_value() const { |
| 0 | 53 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
54 assert (!is_optimized(), "an optimized virtual call does not have a cached metadata"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
55 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
56 if (!is_in_transition_state()) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
57 void* data = (void*)_value->data(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
58 // If we let the metadata value here be initialized to zero... |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
59 assert(data != NULL || Universe::non_oop_word() == NULL, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
60 "no raw nulls in CompiledIC metadatas, because of patching races"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
61 return (data == (void*)Universe::non_oop_word()) ? NULL : data; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
62 } else { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
63 return InlineCacheBuffer::cached_value_for((CompiledIC *)this); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
64 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
65 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
66 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
67 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
68 void CompiledIC::internal_set_ic_destination(address entry_point, bool is_icstub, void* cache, bool is_icholder) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
69 assert(entry_point != NULL, "must set legal entry point"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
70 assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
71 assert (!is_optimized() || cache == NULL, "an optimized virtual call does not have a cached metadata"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
72 assert (cache == NULL || cache != (Metadata*)badOopVal, "invalid metadata"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
73 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
74 assert(!is_icholder || is_icholder_entry(entry_point), "must be"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
75 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
76 // Don't use ic_destination for this test since that forwards |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
77 // through ICBuffer instead of returning the actual current state of |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
78 // the CompiledIC. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
79 if (is_icholder_entry(_ic_call->destination())) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
80 // When patching for the ICStub case the cached value isn't |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
81 // overwritten until the ICStub copied into the CompiledIC during |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
82 // the next safepoint. Make sure that the CompiledICHolder* is |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
83 // marked for release at this point since it won't be identifiable |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
84 // once the entry point is overwritten. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
85 InlineCacheBuffer::queue_for_release((CompiledICHolder*)_value->data()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
86 } |
| 0 | 87 |
| 88 if (TraceCompiledIC) { | |
| 89 tty->print(" "); | |
| 90 print_compiled_ic(); | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
91 tty->print(" changing destination to " INTPTR_FORMAT, p2i(entry_point)); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
92 if (!is_optimized()) { |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
93 tty->print(" changing cached %s to " INTPTR_FORMAT, is_icholder ? "icholder" : "metadata", p2i((address)cache)); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
94 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
95 if (is_icstub) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
96 tty->print(" (icstub)"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
97 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
98 tty->cr(); |
| 0 | 99 } |
| 100 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
101 { |
|
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20277
diff
changeset
|
102 MutexLockerEx pl(SafepointSynchronize::is_at_safepoint() ? NULL : Patching_lock, Mutex::_no_safepoint_check_flag); |
| 0 | 103 #ifdef ASSERT |
|
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20277
diff
changeset
|
104 CodeBlob* cb = CodeCache::find_blob_unsafe(_ic_call); |
|
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20277
diff
changeset
|
105 assert(cb != NULL && cb->is_nmethod(), "must be nmethod"); |
| 0 | 106 #endif |
|
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20277
diff
changeset
|
107 _ic_call->set_destination_mt_safe(entry_point); |
|
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20277
diff
changeset
|
108 } |
| 0 | 109 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
110 if (is_optimized() || is_icstub) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
111 // Optimized call sites don't have a cache value and ICStub call |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
112 // sites only change the entry point. Changing the value in that |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
113 // case could lead to MT safety issues. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
114 assert(cache == NULL, "must be null"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
115 return; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
116 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
117 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
118 if (cache == NULL) cache = (void*)Universe::non_oop_word(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
119 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
120 _value->set_data((intptr_t)cache); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
121 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
122 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
123 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
124 void CompiledIC::set_ic_destination(ICStub* stub) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
125 internal_set_ic_destination(stub->code_begin(), true, NULL, false); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
126 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
127 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
128 |
| 0 | 129 |
| 130 address CompiledIC::ic_destination() const { | |
| 131 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); | |
| 132 if (!is_in_transition_state()) { | |
| 133 return _ic_call->destination(); | |
| 134 } else { | |
| 135 return InlineCacheBuffer::ic_destination_for((CompiledIC *)this); | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 | |
| 140 bool CompiledIC::is_in_transition_state() const { | |
| 141 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); | |
| 142 return InlineCacheBuffer::contains(_ic_call->destination()); | |
| 143 } | |
| 144 | |
| 145 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
146 bool CompiledIC::is_icholder_call() const { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
147 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
148 return !_is_optimized && is_icholder_entry(ic_destination()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
149 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
150 |
| 0 | 151 // Returns native address of 'call' instruction in inline-cache. Used by |
| 152 // the InlineCacheBuffer when it needs to find the stub. | |
| 153 address CompiledIC::stub_address() const { | |
| 154 assert(is_in_transition_state(), "should only be called when we are in a transition state"); | |
| 155 return _ic_call->destination(); | |
| 156 } | |
| 157 | |
|
23426
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
158 // Clears the IC stub if the compiled IC is in transition state |
|
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
159 void CompiledIC::clear_ic_stub() { |
|
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
160 if (is_in_transition_state()) { |
|
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
161 ICStub* stub = ICStub_from_destination_address(stub_address()); |
|
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
162 stub->clear(); |
|
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
163 } |
|
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
164 } |
|
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
165 |
| 0 | 166 |
| 167 //----------------------------------------------------------------------------- | |
| 168 // High-level access to an inline cache. Guaranteed to be MT-safe. | |
| 169 | |
|
20277
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
170 void CompiledIC::initialize_from_iter(RelocIterator* iter) { |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
171 assert(iter->addr() == _ic_call->instruction_address(), "must find ic_call"); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
172 |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
173 if (iter->type() == relocInfo::virtual_call_type) { |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
174 virtual_call_Relocation* r = iter->virtual_call_reloc(); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
175 _is_optimized = false; |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
176 _value = nativeMovConstReg_at(r->cached_value()); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
177 } else { |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
178 assert(iter->type() == relocInfo::opt_virtual_call_type, "must be a virtual call"); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
179 _is_optimized = true; |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
180 _value = NULL; |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
181 } |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
182 } |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
183 |
|
20271
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
184 CompiledIC::CompiledIC(nmethod* nm, NativeCall* call) |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
185 : _ic_call(call) |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
186 { |
|
20277
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
187 address ic_call = _ic_call->instruction_address(); |
|
20271
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
188 |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
189 assert(ic_call != NULL, "ic_call address must be set"); |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
190 assert(nm != NULL, "must pass nmethod"); |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
191 assert(nm->contains(ic_call), "must be in nmethod"); |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
192 |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
193 // Search for the ic_call at the given address. |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
194 RelocIterator iter(nm, ic_call, ic_call+1); |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
195 bool ret = iter.next(); |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
196 assert(ret == true, "relocInfo must exist at this address"); |
|
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
197 assert(iter.addr() == ic_call, "must find ic_call"); |
|
20277
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
198 |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
199 initialize_from_iter(&iter); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
200 } |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
201 |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
202 CompiledIC::CompiledIC(RelocIterator* iter) |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
203 : _ic_call(nativeCall_at(iter->addr())) |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
204 { |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
205 address ic_call = _ic_call->instruction_address(); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
206 |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
207 nmethod* nm = iter->code(); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
208 assert(ic_call != NULL, "ic_call address must be set"); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
209 assert(nm != NULL, "must pass nmethod"); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
210 assert(nm->contains(ic_call), "must be in nmethod"); |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
211 |
|
882004b9e7e1
8047362: Add a version of CompiledIC_at that doesn't create a new RelocIterator
stefank
parents:
20271
diff
changeset
|
212 initialize_from_iter(iter); |
|
20271
c64b6b0c40c8
8047326: Consolidate all CompiledIC::CompiledIC implementations and move it to compiledIC.cpp
stefank
parents:
17937
diff
changeset
|
213 } |
| 0 | 214 |
| 12294 | 215 bool CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS) { |
| 0 | 216 assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); |
| 217 assert(!is_optimized(), "cannot set an optimized virtual call to megamorphic"); | |
| 218 assert(is_call_to_compiled() || is_call_to_interpreted(), "going directly to megamorphic?"); | |
| 219 | |
| 220 address entry; | |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
221 if (call_info->call_kind() == CallInfo::itable_call) { |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
222 assert(bytecode == Bytecodes::_invokeinterface, ""); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
223 int itable_index = call_info->itable_index(); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
224 entry = VtableStubs::find_itable_stub(itable_index); |
| 12294 | 225 if (entry == false) { |
| 226 return false; | |
| 227 } | |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
228 #ifdef ASSERT |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
229 int index = call_info->resolved_method()->itable_index(); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
230 assert(index == itable_index, "CallInfo pre-computes this"); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
231 #endif //ASSERT |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6725
diff
changeset
|
232 InstanceKlass* k = call_info->resolved_method()->method_holder(); |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
233 assert(k->verify_itable_index(itable_index), "sanity check"); |
| 0 | 234 InlineCacheBuffer::create_transition_stub(this, k, entry); |
| 235 } else { | |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
236 assert(call_info->call_kind() == CallInfo::vtable_call, "either itable or vtable"); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
237 // Can be different than selected_method->vtable_index(), due to package-private etc. |
| 0 | 238 int vtable_index = call_info->vtable_index(); |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
239 assert(call_info->resolved_klass()->verify_vtable_index(vtable_index), "sanity check"); |
|
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
240 entry = VtableStubs::find_vtable_stub(vtable_index); |
| 12294 | 241 if (entry == NULL) { |
| 242 return false; | |
| 243 } | |
|
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
10168
diff
changeset
|
244 InlineCacheBuffer::create_transition_stub(this, NULL, entry); |
| 0 | 245 } |
| 246 | |
| 247 if (TraceICs) { | |
| 248 ResourceMark rm; | |
| 249 tty->print_cr ("IC@" INTPTR_FORMAT ": to megamorphic %s entry: " INTPTR_FORMAT, | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
250 p2i(instruction_address()), call_info->selected_method()->print_value_string(), p2i(entry)); |
| 0 | 251 } |
| 252 | |
| 253 // We can't check this anymore. With lazy deopt we could have already | |
| 254 // cleaned this IC entry before we even return. This is possible if | |
| 255 // we ran out of space in the inline cache buffer trying to do the | |
| 256 // set_next and we safepointed to free up space. This is a benign | |
| 257 // race because the IC entry was complete when we safepointed so | |
| 258 // cleaning it immediately is harmless. | |
| 259 // assert(is_megamorphic(), "sanity check"); | |
| 12294 | 260 return true; |
| 0 | 261 } |
| 262 | |
| 263 | |
| 264 // true if destination is megamorphic stub | |
| 265 bool CompiledIC::is_megamorphic() const { | |
| 266 assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); | |
| 267 assert(!is_optimized(), "an optimized call cannot be megamorphic"); | |
| 268 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
269 // Cannot rely on cached_value. It is either an interface or a method. |
| 0 | 270 return VtableStubs::is_entry_point(ic_destination()); |
| 271 } | |
| 272 | |
| 273 bool CompiledIC::is_call_to_compiled() const { | |
| 274 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); | |
| 275 | |
| 276 // Use unsafe, since an inline cache might point to a zombie method. However, the zombie | |
| 277 // method is guaranteed to still exist, since we only remove methods after all inline caches | |
| 278 // has been cleaned up | |
| 279 CodeBlob* cb = CodeCache::find_blob_unsafe(ic_destination()); | |
| 280 bool is_monomorphic = (cb != NULL && cb->is_nmethod()); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
281 // Check that the cached_value is a klass for non-optimized monomorphic calls |
| 0 | 282 // This assertion is invalid for compiler1: a call that does not look optimized (no static stub) can be used |
|
15101
9f7eac122d61
Update comment message about unoptimized virtual call sites
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
15069
diff
changeset
|
283 // for calling directly to vep without using the inline cache (i.e., cached_value == NULL). |
|
21559
be896a1983c0
recast all Graal native code as JVMCI code (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
20804
diff
changeset
|
284 // For JVMCI this occurs because CHA is only used to improve inlining so call sites which could be optimized |
|
15101
9f7eac122d61
Update comment message about unoptimized virtual call sites
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
15069
diff
changeset
|
285 // virtuals because there are no currently loaded subclasses of a type are left as virtual call sites. |
| 0 | 286 #ifdef ASSERT |
| 287 CodeBlob* caller = CodeCache::find_blob_unsafe(instruction_address()); | |
|
21559
be896a1983c0
recast all Graal native code as JVMCI code (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
20804
diff
changeset
|
288 bool is_c1_or_jvmci_method = caller->is_compiled_by_c1() || caller->is_compiled_by_jvmci(); |
|
be896a1983c0
recast all Graal native code as JVMCI code (JBS:GRAAL-53)
Doug Simon <doug.simon@oracle.com>
parents:
20804
diff
changeset
|
289 assert( is_c1_or_jvmci_method || |
| 0 | 290 !is_monomorphic || |
| 291 is_optimized() || | |
|
23428
be740540f60c
8134493: Cleaning inline caches of unloaded nmethods should be done in sweeper
thartmann
parents:
23427
diff
changeset
|
292 !caller->is_alive() || |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
293 (cached_metadata() != NULL && cached_metadata()->is_klass()), "sanity check"); |
| 0 | 294 #endif // ASSERT |
| 295 return is_monomorphic; | |
| 296 } | |
| 297 | |
| 298 | |
| 299 bool CompiledIC::is_call_to_interpreted() const { | |
| 300 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); | |
| 301 // Call to interpreter if destination is either calling to a stub (if it | |
| 302 // is optimized), or calling to an I2C blob | |
| 303 bool is_call_to_interpreted = false; | |
| 304 if (!is_optimized()) { | |
| 305 // must use unsafe because the destination can be a zombie (and we're cleaning) | |
| 306 // and the print_compiled_ic code wants to know if site (in the non-zombie) | |
| 307 // is to the interpreter. | |
| 308 CodeBlob* cb = CodeCache::find_blob_unsafe(ic_destination()); | |
| 309 is_call_to_interpreted = (cb != NULL && cb->is_adapter_blob()); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
310 assert(!is_call_to_interpreted || (is_icholder_call() && cached_icholder() != NULL), "sanity check"); |
| 0 | 311 } else { |
| 312 // Check if we are calling into our own codeblob (i.e., to a stub) | |
| 313 CodeBlob* cb = CodeCache::find_blob(_ic_call->instruction_address()); | |
| 314 address dest = ic_destination(); | |
| 315 #ifdef ASSERT | |
| 316 { | |
| 317 CodeBlob* db = CodeCache::find_blob_unsafe(dest); | |
| 318 assert(!db->is_adapter_blob(), "must use stub!"); | |
| 319 } | |
| 320 #endif /* ASSERT */ | |
| 321 is_call_to_interpreted = cb->contains(dest); | |
| 322 } | |
| 323 return is_call_to_interpreted; | |
| 324 } | |
| 325 | |
| 326 | |
|
23428
be740540f60c
8134493: Cleaning inline caches of unloaded nmethods should be done in sweeper
thartmann
parents:
23427
diff
changeset
|
327 void CompiledIC::set_to_clean(bool in_use) { |
| 0 | 328 assert(SafepointSynchronize::is_at_safepoint() || CompiledIC_lock->is_locked() , "MT-unsafe call"); |
| 329 if (TraceInlineCacheClearing || TraceICs) { | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
330 tty->print_cr("IC@" INTPTR_FORMAT ": set to clean", p2i(instruction_address())); |
| 0 | 331 print(); |
| 332 } | |
| 333 | |
| 334 address entry; | |
| 335 if (is_optimized()) { | |
| 336 entry = SharedRuntime::get_resolve_opt_virtual_call_stub(); | |
| 337 } else { | |
| 338 entry = SharedRuntime::get_resolve_virtual_call_stub(); | |
| 339 } | |
| 340 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
341 // A zombie transition will always be safe, since the metadata has already been set to NULL, so |
| 0 | 342 // we only need to patch the destination |
|
23428
be740540f60c
8134493: Cleaning inline caches of unloaded nmethods should be done in sweeper
thartmann
parents:
23427
diff
changeset
|
343 bool safe_transition = !in_use || is_optimized() || SafepointSynchronize::is_at_safepoint(); |
| 0 | 344 |
| 345 if (safe_transition) { | |
| 346 // Kill any leftover stub we might have too | |
|
23426
682119c4c32e
8058737: CodeCache::find_blob fails with 'unsafe access to zombie method'
thartmann
parents:
20432
diff
changeset
|
347 clear_ic_stub(); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
348 if (is_optimized()) { |
|
23427
c1950f51ed60
8075805: Crash while trying to release CompiledICHolder
thartmann
parents:
23426
diff
changeset
|
349 set_ic_destination(entry); |
|
c1950f51ed60
8075805: Crash while trying to release CompiledICHolder
thartmann
parents:
23426
diff
changeset
|
350 } else { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
351 set_ic_destination_and_value(entry, (void*)NULL); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
352 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
353 } else { |
| 0 | 354 // Unsafe transition - create stub. |
| 355 InlineCacheBuffer::create_transition_stub(this, NULL, entry); | |
| 356 } | |
| 357 // We can't check this anymore. With lazy deopt we could have already | |
| 358 // cleaned this IC entry before we even return. This is possible if | |
| 359 // we ran out of space in the inline cache buffer trying to do the | |
| 360 // set_next and we safepointed to free up space. This is a benign | |
| 361 // race because the IC entry was complete when we safepointed so | |
| 362 // cleaning it immediately is harmless. | |
| 363 // assert(is_clean(), "sanity check"); | |
| 364 } | |
| 365 | |
| 366 | |
| 367 bool CompiledIC::is_clean() const { | |
| 368 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); | |
| 369 bool is_clean = false; | |
| 370 address dest = ic_destination(); | |
| 371 is_clean = dest == SharedRuntime::get_resolve_opt_virtual_call_stub() || | |
| 372 dest == SharedRuntime::get_resolve_virtual_call_stub(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
373 assert(!is_clean || is_optimized() || cached_value() == NULL, "sanity check"); |
| 0 | 374 return is_clean; |
| 375 } | |
| 376 | |
| 377 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
378 void CompiledIC::set_to_monomorphic(CompiledICInfo& info) { |
| 0 | 379 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), ""); |
| 380 // Updating a cache to the wrong entry can cause bugs that are very hard | |
| 381 // to track down - if cache entry gets invalid - we just clean it. In | |
| 382 // this way it is always the same code path that is responsible for | |
| 383 // updating and resolving an inline cache | |
| 384 // | |
| 385 // The above is no longer true. SharedRuntime::fixup_callers_callsite will change optimized | |
| 386 // callsites. In addition ic_miss code will update a site to monomorphic if it determines | |
| 387 // that an monomorphic call to the interpreter can now be monomorphic to compiled code. | |
| 388 // | |
| 389 // In both of these cases the only thing being modifed is the jump/call target and these | |
| 390 // transitions are mt_safe | |
| 391 | |
| 392 Thread *thread = Thread::current(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
393 if (info.to_interpreter()) { |
| 0 | 394 // Call to interpreter |
| 395 if (info.is_optimized() && is_optimized()) { | |
| 396 assert(is_clean(), "unsafe IC path"); | |
| 397 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 398 // the call analysis (callee structure) specifies that the call is optimized | |
| 399 // (either because of CHA or the static target is final) | |
| 400 // At code generation time, this call has been emitted as static call | |
| 401 // Call via stub | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
402 assert(info.cached_metadata() != NULL && info.cached_metadata()->is_method(), "sanity check"); |
| 0 | 403 CompiledStaticCall* csc = compiledStaticCall_at(instruction_address()); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
404 methodHandle method (thread, (Method*)info.cached_metadata()); |
| 0 | 405 csc->set_to_interpreted(method, info.entry()); |
| 406 if (TraceICs) { | |
| 407 ResourceMark rm(thread); | |
| 408 tty->print_cr ("IC@" INTPTR_FORMAT ": monomorphic to interpreter: %s", | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
409 p2i(instruction_address()), |
| 0 | 410 method->print_value_string()); |
| 411 } | |
| 412 } else { | |
| 413 // Call via method-klass-holder | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
414 InlineCacheBuffer::create_transition_stub(this, info.claim_cached_icholder(), info.entry()); |
| 0 | 415 if (TraceICs) { |
| 416 ResourceMark rm(thread); | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
417 tty->print_cr ("IC@" INTPTR_FORMAT ": monomorphic to interpreter via icholder ", p2i(instruction_address())); |
| 0 | 418 } |
| 419 } | |
| 420 } else { | |
| 421 // Call to compiled code | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
422 bool static_bound = info.is_optimized() || (info.cached_metadata() == NULL); |
| 0 | 423 #ifdef ASSERT |
| 424 CodeBlob* cb = CodeCache::find_blob_unsafe(info.entry()); | |
| 425 assert (cb->is_nmethod(), "must be compiled!"); | |
| 426 #endif /* ASSERT */ | |
| 427 | |
| 428 // This is MT safe if we come from a clean-cache and go through a | |
| 429 // non-verified entry point | |
| 430 bool safe = SafepointSynchronize::is_at_safepoint() || | |
| 431 (!is_in_transition_state() && (info.is_optimized() || static_bound || is_clean())); | |
| 432 | |
| 433 if (!safe) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
434 InlineCacheBuffer::create_transition_stub(this, info.cached_metadata(), info.entry()); |
| 0 | 435 } else { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
436 if (is_optimized()) { |
| 0 | 437 set_ic_destination(info.entry()); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
438 } else { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
439 set_ic_destination_and_value(info.entry(), info.cached_metadata()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
440 } |
| 0 | 441 } |
| 442 | |
| 443 if (TraceICs) { | |
| 444 ResourceMark rm(thread); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
445 assert(info.cached_metadata() == NULL || info.cached_metadata()->is_klass(), "must be"); |
| 0 | 446 tty->print_cr ("IC@" INTPTR_FORMAT ": monomorphic to compiled (rcvr klass) %s: %s", |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
447 p2i(instruction_address()), |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
448 ((Klass*)info.cached_metadata())->print_value_string(), |
| 0 | 449 (safe) ? "" : "via stub"); |
| 450 } | |
| 451 } | |
| 452 // We can't check this anymore. With lazy deopt we could have already | |
| 453 // cleaned this IC entry before we even return. This is possible if | |
| 454 // we ran out of space in the inline cache buffer trying to do the | |
| 455 // set_next and we safepointed to free up space. This is a benign | |
| 456 // race because the IC entry was complete when we safepointed so | |
| 457 // cleaning it immediately is harmless. | |
| 458 // assert(is_call_to_compiled() || is_call_to_interpreted(), "sanity check"); | |
| 459 } | |
| 460 | |
| 461 | |
| 462 // is_optimized: Compiler has generated an optimized call (i.e., no inline | |
| 463 // cache) static_bound: The call can be static bound (i.e, no need to use | |
| 464 // inline cache) | |
| 465 void CompiledIC::compute_monomorphic_entry(methodHandle method, | |
| 466 KlassHandle receiver_klass, | |
| 467 bool is_optimized, | |
| 468 bool static_bound, | |
| 469 CompiledICInfo& info, | |
| 470 TRAPS) { | |
| 471 nmethod* method_code = method->code(); | |
| 472 address entry = NULL; | |
| 13441 | 473 if (method_code != NULL && method_code->is_in_use()) { |
| 0 | 474 // Call to compiled code |
| 475 if (static_bound || is_optimized) { | |
| 476 entry = method_code->verified_entry_point(); | |
| 477 } else { | |
| 478 entry = method_code->entry_point(); | |
| 479 } | |
| 480 } | |
| 481 if (entry != NULL) { | |
| 482 // Call to compiled code | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
483 info.set_compiled_entry(entry, (static_bound || is_optimized) ? NULL : receiver_klass(), is_optimized); |
| 0 | 484 } else { |
| 485 // Note: the following problem exists with Compiler1: | |
| 486 // - at compile time we may or may not know if the destination is final | |
| 487 // - if we know that the destination is final, we will emit an optimized | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
488 // virtual call (no inline cache), and need a Method* to make a call |
| 0 | 489 // to the interpreter |
| 490 // - if we do not know if the destination is final, we emit a standard | |
| 491 // virtual call, and use CompiledICHolder to call interpreted code | |
| 492 // (no static call stub has been generated) | |
| 493 // However in that case we will now notice it is static_bound | |
| 494 // and convert the call into what looks to be an optimized | |
| 495 // virtual call. This causes problems in verifying the IC because | |
| 496 // it look vanilla but is optimized. Code in is_call_to_interpreted | |
| 497 // is aware of this and weakens its asserts. | |
| 498 | |
| 499 // static_bound should imply is_optimized -- otherwise we have a | |
| 500 // performance bug (statically-bindable method is called via | |
| 501 // dynamically-dispatched call note: the reverse implication isn't | |
| 502 // necessarily true -- the call may have been optimized based on compiler | |
| 503 // analysis (static_bound is only based on "final" etc.) | |
| 504 #ifdef COMPILER2 | |
| 505 #ifdef TIERED | |
| 506 #if defined(ASSERT) | |
| 507 // can't check the assert because we don't have the CompiledIC with which to | |
| 508 // find the address if the call instruction. | |
| 509 // | |
| 510 // CodeBlob* cb = find_blob_unsafe(instruction_address()); | |
| 511 // assert(cb->is_compiled_by_c1() || !static_bound || is_optimized, "static_bound should imply is_optimized"); | |
| 512 #endif // ASSERT | |
| 513 #else | |
| 514 assert(!static_bound || is_optimized, "static_bound should imply is_optimized"); | |
| 515 #endif // TIERED | |
| 516 #endif // COMPILER2 | |
| 517 if (is_optimized) { | |
| 518 // Use stub entry | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
519 info.set_interpreter_entry(method()->get_c2i_entry(), method()); |
| 0 | 520 } else { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
521 // Use icholder entry |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
522 CompiledICHolder* holder = new CompiledICHolder(method(), receiver_klass()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
523 info.set_icholder_entry(method()->get_c2i_unverified_entry(), holder); |
| 0 | 524 } |
| 525 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
526 assert(info.is_optimized() == is_optimized, "must agree"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
527 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
528 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
529 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
530 bool CompiledIC::is_icholder_entry(address entry) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
531 CodeBlob* cb = CodeCache::find_blob_unsafe(entry); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
532 return (cb != NULL && cb->is_adapter_blob()); |
| 0 | 533 } |
| 534 | |
| 535 // ---------------------------------------------------------------------------- | |
| 536 | |
| 537 void CompiledStaticCall::set_to_clean() { | |
| 538 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call"); | |
| 539 // Reset call site | |
|
20278
2c6ef90f030a
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
20277
diff
changeset
|
540 MutexLockerEx pl(SafepointSynchronize::is_at_safepoint() ? NULL : Patching_lock, Mutex::_no_safepoint_check_flag); |
| 0 | 541 #ifdef ASSERT |
| 542 CodeBlob* cb = CodeCache::find_blob_unsafe(this); | |
| 543 assert(cb != NULL && cb->is_nmethod(), "must be nmethod"); | |
| 544 #endif | |
| 545 set_destination_mt_safe(SharedRuntime::get_resolve_static_call_stub()); | |
| 546 | |
| 547 // Do not reset stub here: It is too expensive to call find_stub. | |
| 548 // Instead, rely on caller (nmethod::clear_inline_caches) to clear | |
| 549 // both the call and its stub. | |
| 550 } | |
| 551 | |
| 552 | |
| 553 bool CompiledStaticCall::is_clean() const { | |
| 554 return destination() == SharedRuntime::get_resolve_static_call_stub(); | |
| 555 } | |
| 556 | |
| 557 bool CompiledStaticCall::is_call_to_compiled() const { | |
| 558 return CodeCache::contains(destination()); | |
| 559 } | |
| 560 | |
| 561 | |
| 562 bool CompiledStaticCall::is_call_to_interpreted() const { | |
| 563 // It is a call to interpreted, if it calls to a stub. Hence, the destination | |
| 564 // must be in the stub part of the nmethod that contains the call | |
| 565 nmethod* nm = CodeCache::find_nmethod(instruction_address()); | |
| 566 return nm->stub_contains(destination()); | |
| 567 } | |
| 568 | |
| 569 void CompiledStaticCall::set(const StaticCallInfo& info) { | |
| 570 assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call"); | |
| 571 MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 572 // Updating a cache to the wrong entry can cause bugs that are very hard | |
| 573 // to track down - if cache entry gets invalid - we just clean it. In | |
| 574 // this way it is always the same code path that is responsible for | |
| 575 // updating and resolving an inline cache | |
| 576 assert(is_clean(), "do not update a call entry - use clean"); | |
| 577 | |
| 578 if (info._to_interpreter) { | |
| 579 // Call to interpreted code | |
| 580 set_to_interpreted(info.callee(), info.entry()); | |
| 581 } else { | |
| 582 if (TraceICs) { | |
| 583 ResourceMark rm; | |
| 584 tty->print_cr("CompiledStaticCall@" INTPTR_FORMAT ": set_to_compiled " INTPTR_FORMAT, | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
585 p2i(instruction_address()), |
|
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
586 p2i(info.entry())); |
| 0 | 587 } |
| 588 // Call to compiled code | |
| 589 assert (CodeCache::contains(info.entry()), "wrong entry point"); | |
| 590 set_destination_mt_safe(info.entry()); | |
| 591 } | |
| 592 } | |
| 593 | |
| 594 | |
| 595 // Compute settings for a CompiledStaticCall. Since we might have to set | |
| 596 // the stub when calling to the interpreter, we need to return arguments. | |
| 597 void CompiledStaticCall::compute_entry(methodHandle m, StaticCallInfo& info) { | |
| 598 nmethod* m_code = m->code(); | |
| 599 info._callee = m; | |
| 13441 | 600 if (m_code != NULL && m_code->is_in_use()) { |
| 0 | 601 info._to_interpreter = false; |
| 602 info._entry = m_code->verified_entry_point(); | |
| 603 } else { | |
| 604 // Callee is interpreted code. In any case entering the interpreter | |
| 605 // puts a converter-frame on the stack to save arguments. | |
|
20432
aff6ccb506cb
8056154: JVM crash with EXCEPTION_ACCESS_VIOLATION when there are many threads running
iveresov
parents:
20278
diff
changeset
|
606 assert(!m->is_method_handle_intrinsic(), "Compiled code should never call interpreter MH intrinsics"); |
| 0 | 607 info._to_interpreter = true; |
| 608 info._entry = m()->get_c2i_entry(); | |
| 609 } | |
| 610 } | |
| 611 | |
| 612 address CompiledStaticCall::find_stub() { | |
| 613 // Find reloc. information containing this call-site | |
| 614 RelocIterator iter((nmethod*)NULL, instruction_address()); | |
| 615 while (iter.next()) { | |
| 616 if (iter.addr() == instruction_address()) { | |
| 617 switch(iter.type()) { | |
| 618 case relocInfo::static_call_type: | |
| 619 return iter.static_call_reloc()->static_stub(); | |
| 620 // We check here for opt_virtual_call_type, since we reuse the code | |
| 621 // from the CompiledIC implementation | |
| 622 case relocInfo::opt_virtual_call_type: | |
| 623 return iter.opt_virtual_call_reloc()->static_stub(); | |
| 624 case relocInfo::poll_type: | |
| 625 case relocInfo::poll_return_type: // A safepoint can't overlap a call. | |
| 626 default: | |
| 627 ShouldNotReachHere(); | |
| 628 } | |
| 629 } | |
| 630 } | |
| 631 return NULL; | |
| 632 } | |
| 633 | |
| 634 | |
| 635 //----------------------------------------------------------------------------- | |
| 636 // Non-product mode code | |
| 637 #ifndef PRODUCT | |
| 638 | |
| 639 void CompiledIC::verify() { | |
| 640 // make sure code pattern is actually a call imm32 instruction | |
| 641 _ic_call->verify(); | |
| 642 if (os::is_MP()) { | |
| 643 _ic_call->verify_alignment(); | |
| 644 } | |
| 645 assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted() | |
| 646 || is_optimized() || is_megamorphic(), "sanity check"); | |
| 647 } | |
| 648 | |
| 649 void CompiledIC::print() { | |
| 650 print_compiled_ic(); | |
| 651 tty->cr(); | |
| 652 } | |
| 653 | |
| 654 void CompiledIC::print_compiled_ic() { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
4872
diff
changeset
|
655 tty->print("Inline cache at " INTPTR_FORMAT ", calling %s " INTPTR_FORMAT " cached_value " INTPTR_FORMAT, |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
656 p2i(instruction_address()), is_call_to_interpreted() ? "interpreted " : "", p2i(ic_destination()), p2i(is_optimized() ? NULL : cached_value())); |
| 0 | 657 } |
| 658 | |
| 659 void CompiledStaticCall::print() { | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
13441
diff
changeset
|
660 tty->print("static call at " INTPTR_FORMAT " -> ", p2i(instruction_address())); |
| 0 | 661 if (is_clean()) { |
| 662 tty->print("clean"); | |
| 663 } else if (is_call_to_compiled()) { | |
| 664 tty->print("compiled"); | |
| 665 } else if (is_call_to_interpreted()) { | |
| 666 tty->print("interpreted"); | |
| 667 } | |
| 668 tty->cr(); | |
| 669 } | |
| 670 | |
|
10168
a6e09d6dd8e5
8003853: specify offset of IC load in java_to_interp stub
dlong
parents:
8776
diff
changeset
|
671 #endif // !PRODUCT |