Mercurial > hg > truffle
annotate src/share/vm/code/icBuffer.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f95d63e2154a |
| children | b31471cdc53e |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
2 * Copyright (c) 1997, 2012, 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 #ifndef SHARE_VM_CODE_ICBUFFER_HPP |
| 26 #define SHARE_VM_CODE_ICBUFFER_HPP | |
| 27 | |
| 28 #include "code/stubs.hpp" | |
| 29 #include "interpreter/bytecodes.hpp" | |
| 30 #include "memory/allocation.hpp" | |
| 31 | |
| 0 | 32 // |
| 33 // For CompiledIC's: | |
| 34 // | |
| 35 // In cases where we do not have MT-safe state transformation, | |
| 36 // we go to a transition state, using ICStubs. At a safepoint, | |
| 37 // the inline caches are transferred from the transitional code: | |
| 38 // | |
| 39 // instruction_address --> 01 set xxx_oop, Ginline_cache_klass | |
| 40 // 23 jump_to Gtemp, yyyy | |
| 41 // 4 nop | |
| 42 | |
| 43 class ICStub: public Stub { | |
| 44 private: | |
| 45 int _size; // total size of the stub incl. code | |
| 46 address _ic_site; // points at call instruction of owning ic-buffer | |
| 47 /* stub code follows here */ | |
| 48 protected: | |
| 49 friend class ICStubInterface; | |
| 50 // This will be called only by ICStubInterface | |
| 51 void initialize(int size) { _size = size; _ic_site = NULL; } | |
| 52 void finalize(); // called when a method is removed | |
| 53 | |
| 54 // General info | |
| 55 int size() const { return _size; } | |
| 56 static int code_size_to_size(int code_size) { return round_to(sizeof(ICStub), CodeEntryAlignment) + code_size; } | |
| 57 | |
| 58 public: | |
| 59 // Creation | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
60 void set_stub(CompiledIC *ic, void* cached_value, address dest_addr); |
| 0 | 61 |
| 62 // Code info | |
| 63 address code_begin() const { return (address)this + round_to(sizeof(ICStub), CodeEntryAlignment); } | |
| 64 address code_end() const { return (address)this + size(); } | |
| 65 | |
| 66 // Call site info | |
| 67 address ic_site() const { return _ic_site; } | |
| 68 void clear(); | |
| 69 bool is_empty() const { return _ic_site == NULL; } | |
| 70 | |
| 71 // stub info | |
| 72 address destination() const; // destination of jump instruction | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
73 void* cached_value() const; // cached_value for stub |
| 0 | 74 |
| 75 // Debugging | |
| 76 void verify() PRODUCT_RETURN; | |
| 77 void print() PRODUCT_RETURN; | |
| 78 | |
| 79 // Creation | |
| 80 friend ICStub* ICStub_from_destination_address(address destination_address); | |
| 81 }; | |
| 82 | |
| 83 // ICStub Creation | |
| 84 inline ICStub* ICStub_from_destination_address(address destination_address) { | |
| 85 ICStub* stub = (ICStub*) (destination_address - round_to(sizeof(ICStub), CodeEntryAlignment)); | |
| 86 #ifdef ASSERT | |
| 87 stub->verify(); | |
| 88 #endif | |
| 89 return stub; | |
| 90 } | |
| 91 | |
| 92 class InlineCacheBuffer: public AllStatic { | |
| 93 private: | |
| 94 // friends | |
| 95 friend class ICStub; | |
| 96 | |
| 97 static int ic_stub_code_size(); | |
| 98 | |
| 99 static StubQueue* _buffer; | |
| 100 static ICStub* _next_stub; | |
| 101 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
102 static CompiledICHolder* _pending_released; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
103 static int _pending_count; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
104 |
| 0 | 105 static StubQueue* buffer() { return _buffer; } |
| 106 static void set_next_stub(ICStub* next_stub) { _next_stub = next_stub; } | |
| 107 static ICStub* get_next_stub() { return _next_stub; } | |
| 108 | |
| 109 static void init_next_stub(); | |
| 110 | |
| 111 static ICStub* new_ic_stub(); | |
| 112 | |
| 113 | |
| 114 // Machine-dependent implementation of ICBuffer | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
115 static void assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point); |
| 0 | 116 static address ic_buffer_entry_point (address code_begin); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
117 static void* ic_buffer_cached_value (address code_begin); |
| 0 | 118 |
| 119 public: | |
| 120 | |
| 121 // Initialization; must be called before first usage | |
| 122 static void initialize(); | |
| 123 | |
| 124 // Access | |
| 125 static bool contains(address instruction_address); | |
| 126 | |
| 127 // removes the ICStubs after backpatching | |
| 128 static void update_inline_caches(); | |
| 129 | |
| 130 // for debugging | |
| 131 static bool is_empty(); | |
| 132 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
133 static void release_pending_icholders(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
134 static void queue_for_release(CompiledICHolder* icholder); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
135 static int pending_icholder_count() { return _pending_count; } |
| 0 | 136 |
| 137 // New interface | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
138 static void create_transition_stub(CompiledIC *ic, void* cached_value, address entry); |
| 0 | 139 static address ic_destination_for(CompiledIC *ic); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1972
diff
changeset
|
140 static void* cached_value_for(CompiledIC *ic); |
| 0 | 141 }; |
| 1972 | 142 |
| 143 #endif // SHARE_VM_CODE_ICBUFFER_HPP |