Mercurial > hg > truffle
annotate src/share/vm/code/icBuffer.hpp @ 14649:f6301b007a16
6498581: ThreadInterruptTest3 produces wrong output on Windows
Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set.
Reviewed-by: acorn, kvn
Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Wed, 26 Feb 2014 15:20:41 -0800 |
| parents | de6a9e811145 |
| children | d8041d695d19 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 * | |
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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 | |
| 1972 | 25 #ifndef SHARE_VM_CODE_ICBUFFER_HPP |
| 26 #define SHARE_VM_CODE_ICBUFFER_HPP | |
| 27 | |
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28 #include "asm/codeBuffer.hpp" |
| 1972 | 29 #include "code/stubs.hpp" |
| 30 #include "interpreter/bytecodes.hpp" | |
| 31 #include "memory/allocation.hpp" | |
| 32 | |
| 0 | 33 // |
| 34 // For CompiledIC's: | |
| 35 // | |
| 36 // In cases where we do not have MT-safe state transformation, | |
| 37 // we go to a transition state, using ICStubs. At a safepoint, | |
| 38 // the inline caches are transferred from the transitional code: | |
| 39 // | |
| 40 // instruction_address --> 01 set xxx_oop, Ginline_cache_klass | |
| 41 // 23 jump_to Gtemp, yyyy | |
| 42 // 4 nop | |
| 43 | |
| 44 class ICStub: public Stub { | |
| 45 private: | |
| 46 int _size; // total size of the stub incl. code | |
| 47 address _ic_site; // points at call instruction of owning ic-buffer | |
| 48 /* stub code follows here */ | |
| 49 protected: | |
| 50 friend class ICStubInterface; | |
| 51 // This will be called only by ICStubInterface | |
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52 void initialize(int size, |
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53 CodeStrings strings) { _size = size; _ic_site = NULL; } |
| 0 | 54 void finalize(); // called when a method is removed |
| 55 | |
| 56 // General info | |
| 57 int size() const { return _size; } | |
| 58 static int code_size_to_size(int code_size) { return round_to(sizeof(ICStub), CodeEntryAlignment) + code_size; } | |
| 59 | |
| 60 public: | |
| 61 // Creation | |
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62 void set_stub(CompiledIC *ic, void* cached_value, address dest_addr); |
| 0 | 63 |
| 64 // Code info | |
| 65 address code_begin() const { return (address)this + round_to(sizeof(ICStub), CodeEntryAlignment); } | |
| 66 address code_end() const { return (address)this + size(); } | |
| 67 | |
| 68 // Call site info | |
| 69 address ic_site() const { return _ic_site; } | |
| 70 void clear(); | |
| 71 bool is_empty() const { return _ic_site == NULL; } | |
| 72 | |
| 73 // stub info | |
| 74 address destination() const; // destination of jump instruction | |
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75 void* cached_value() const; // cached_value for stub |
| 0 | 76 |
| 77 // Debugging | |
| 78 void verify() PRODUCT_RETURN; | |
| 79 void print() PRODUCT_RETURN; | |
| 80 | |
| 81 // Creation | |
| 82 friend ICStub* ICStub_from_destination_address(address destination_address); | |
| 83 }; | |
| 84 | |
| 85 // ICStub Creation | |
| 86 inline ICStub* ICStub_from_destination_address(address destination_address) { | |
| 87 ICStub* stub = (ICStub*) (destination_address - round_to(sizeof(ICStub), CodeEntryAlignment)); | |
| 88 #ifdef ASSERT | |
| 89 stub->verify(); | |
| 90 #endif | |
| 91 return stub; | |
| 92 } | |
| 93 | |
| 94 class InlineCacheBuffer: public AllStatic { | |
| 95 private: | |
| 96 // friends | |
| 97 friend class ICStub; | |
| 98 | |
| 99 static int ic_stub_code_size(); | |
| 100 | |
| 101 static StubQueue* _buffer; | |
| 102 static ICStub* _next_stub; | |
| 103 | |
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104 static CompiledICHolder* _pending_released; |
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105 static int _pending_count; |
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106 |
| 0 | 107 static StubQueue* buffer() { return _buffer; } |
| 108 static void set_next_stub(ICStub* next_stub) { _next_stub = next_stub; } | |
| 109 static ICStub* get_next_stub() { return _next_stub; } | |
| 110 | |
| 111 static void init_next_stub(); | |
| 112 | |
| 113 static ICStub* new_ic_stub(); | |
| 114 | |
| 115 | |
| 116 // Machine-dependent implementation of ICBuffer | |
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117 static void assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point); |
| 0 | 118 static address ic_buffer_entry_point (address code_begin); |
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119 static void* ic_buffer_cached_value (address code_begin); |
| 0 | 120 |
| 121 public: | |
| 122 | |
| 123 // Initialization; must be called before first usage | |
| 124 static void initialize(); | |
| 125 | |
| 126 // Access | |
| 127 static bool contains(address instruction_address); | |
| 128 | |
| 129 // removes the ICStubs after backpatching | |
| 130 static void update_inline_caches(); | |
| 131 | |
| 132 // for debugging | |
| 133 static bool is_empty(); | |
| 134 | |
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135 static void release_pending_icholders(); |
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136 static void queue_for_release(CompiledICHolder* icholder); |
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137 static int pending_icholder_count() { return _pending_count; } |
| 0 | 138 |
| 139 // New interface | |
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140 static void create_transition_stub(CompiledIC *ic, void* cached_value, address entry); |
| 0 | 141 static address ic_destination_for(CompiledIC *ic); |
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142 static void* cached_value_for(CompiledIC *ic); |
| 0 | 143 }; |
| 1972 | 144 |
| 145 #endif // SHARE_VM_CODE_ICBUFFER_HPP |