Mercurial > hg > truffle
annotate src/share/vm/runtime/stubCodeGenerator.cpp @ 1644:2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
Reviewed-by: kvn
| author | never |
|---|---|
| date | Thu, 08 Jul 2010 14:29:44 -0700 |
| parents | c18cbe5936b8 |
| children | 126ea7725993 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6965184: possible races in make_not_entrant_or_zombie
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2 * Copyright (c) 1997, 2010, 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. | |
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| 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_stubCodeGenerator.cpp.incl" | |
| 27 | |
| 28 | |
| 29 // Implementation of StubCodeDesc | |
| 30 | |
| 31 StubCodeDesc* StubCodeDesc::_list = NULL; | |
| 32 int StubCodeDesc::_count = 0; | |
| 33 | |
| 34 | |
| 35 StubCodeDesc* StubCodeDesc::desc_for(address pc) { | |
| 36 StubCodeDesc* p = _list; | |
| 37 while (p != NULL && !p->contains(pc)) p = p->_next; | |
| 38 // p == NULL || p->contains(pc) | |
| 39 return p; | |
| 40 } | |
| 41 | |
| 42 | |
| 43 StubCodeDesc* StubCodeDesc::desc_for_index(int index) { | |
| 44 StubCodeDesc* p = _list; | |
| 45 while (p != NULL && p->index() != index) p = p->_next; | |
| 46 return p; | |
| 47 } | |
| 48 | |
| 49 | |
| 50 const char* StubCodeDesc::name_for(address pc) { | |
| 51 StubCodeDesc* p = desc_for(pc); | |
| 52 return p == NULL ? NULL : p->name(); | |
| 53 } | |
| 54 | |
| 55 | |
| 56 void StubCodeDesc::print() { | |
| 57 tty->print(group()); | |
| 58 tty->print("::"); | |
| 59 tty->print(name()); | |
| 60 tty->print(" [" INTPTR_FORMAT ", " INTPTR_FORMAT "[ (%d bytes)", begin(), end(), size_in_bytes()); | |
| 61 } | |
| 62 | |
| 63 | |
| 64 | |
| 65 // Implementation of StubCodeGenerator | |
| 66 | |
| 67 StubCodeGenerator::StubCodeGenerator(CodeBuffer* code) { | |
| 68 _masm = new MacroAssembler(code); | |
| 69 _first_stub = _last_stub = NULL; | |
| 70 } | |
| 71 | |
| 72 extern "C" { | |
| 73 static int compare_cdesc(const void* void_a, const void* void_b) { | |
| 74 int ai = (*((StubCodeDesc**) void_a))->index(); | |
| 75 int bi = (*((StubCodeDesc**) void_b))->index(); | |
| 76 return ai - bi; | |
| 77 } | |
| 78 } | |
| 79 | |
| 80 StubCodeGenerator::~StubCodeGenerator() { | |
| 81 if (PrintStubCode) { | |
| 82 CodeBuffer* cbuf = _masm->code(); | |
| 83 CodeBlob* blob = CodeCache::find_blob_unsafe(cbuf->insts()->start()); | |
| 84 if (blob != NULL) { | |
| 85 blob->set_comments(cbuf->comments()); | |
| 86 } | |
| 87 bool saw_first = false; | |
| 88 StubCodeDesc* toprint[1000]; | |
| 89 int toprint_len = 0; | |
| 90 for (StubCodeDesc* cdesc = _last_stub; cdesc != NULL; cdesc = cdesc->_next) { | |
| 91 toprint[toprint_len++] = cdesc; | |
| 92 if (cdesc == _first_stub) { saw_first = true; break; } | |
| 93 } | |
| 94 assert(saw_first, "must get both first & last"); | |
| 95 // Print in reverse order: | |
| 96 qsort(toprint, toprint_len, sizeof(toprint[0]), compare_cdesc); | |
| 97 for (int i = 0; i < toprint_len; i++) { | |
| 98 StubCodeDesc* cdesc = toprint[i]; | |
| 99 cdesc->print(); | |
| 100 tty->cr(); | |
| 101 Disassembler::decode(cdesc->begin(), cdesc->end()); | |
| 102 tty->cr(); | |
| 103 } | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 | |
| 108 void StubCodeGenerator::stub_prolog(StubCodeDesc* cdesc) { | |
| 109 // default implementation - do nothing | |
| 110 } | |
| 111 | |
| 112 | |
| 113 void StubCodeGenerator::stub_epilog(StubCodeDesc* cdesc) { | |
| 114 // default implementation - record the cdesc | |
| 115 if (_first_stub == NULL) _first_stub = cdesc; | |
| 116 _last_stub = cdesc; | |
| 117 } | |
| 118 | |
| 119 | |
| 120 // Implementation of CodeMark | |
| 121 | |
| 122 StubCodeMark::StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name) { | |
| 123 _cgen = cgen; | |
| 124 _cdesc = new StubCodeDesc(group, name, _cgen->assembler()->pc()); | |
| 125 _cgen->stub_prolog(_cdesc); | |
| 126 // define the stub's beginning (= entry point) to be after the prolog: | |
| 127 _cdesc->set_begin(_cgen->assembler()->pc()); | |
| 128 } | |
| 129 | |
| 130 StubCodeMark::~StubCodeMark() { | |
| 131 _cgen->assembler()->flush(); | |
| 132 _cdesc->set_end(_cgen->assembler()->pc()); | |
| 133 assert(StubCodeDesc::_list == _cdesc, "expected order on list"); | |
| 134 _cgen->stub_epilog(_cdesc); | |
| 135 Forte::register_stub(_cdesc->name(), _cdesc->begin(), _cdesc->end()); | |
| 136 | |
| 137 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 138 JvmtiExport::post_dynamic_code_generated(_cdesc->name(), _cdesc->begin(), _cdesc->end()); | |
| 139 } | |
| 140 } |