Mercurial > hg > graal-compiler
annotate src/share/vm/code/icBuffer.hpp @ 1754:e967bad2a9ab
6941275: G1: The MemoryPools are incorrectly supported for G1
Summary: The way we were caluclating the max value meant that it might fluctuate during the run and this broke some assumptions inside the MBeans framework. This change sets the max value of each pool to -1, which means undefined according to the spec.
Reviewed-by: mchung, johnc
| author | tonyp |
|---|---|
| date | Wed, 25 Aug 2010 08:44:58 -0400 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved. |
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| 13 * accompanied this code). | |
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| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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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 // | |
| 26 // For CompiledIC's: | |
| 27 // | |
| 28 // In cases where we do not have MT-safe state transformation, | |
| 29 // we go to a transition state, using ICStubs. At a safepoint, | |
| 30 // the inline caches are transferred from the transitional code: | |
| 31 // | |
| 32 // instruction_address --> 01 set xxx_oop, Ginline_cache_klass | |
| 33 // 23 jump_to Gtemp, yyyy | |
| 34 // 4 nop | |
| 35 | |
| 36 class ICStub: public Stub { | |
| 37 private: | |
| 38 int _size; // total size of the stub incl. code | |
| 39 address _ic_site; // points at call instruction of owning ic-buffer | |
| 40 /* stub code follows here */ | |
| 41 protected: | |
| 42 friend class ICStubInterface; | |
| 43 // This will be called only by ICStubInterface | |
| 44 void initialize(int size) { _size = size; _ic_site = NULL; } | |
| 45 void finalize(); // called when a method is removed | |
| 46 | |
| 47 // General info | |
| 48 int size() const { return _size; } | |
| 49 static int code_size_to_size(int code_size) { return round_to(sizeof(ICStub), CodeEntryAlignment) + code_size; } | |
| 50 | |
| 51 public: | |
| 52 // Creation | |
| 53 void set_stub(CompiledIC *ic, oop cached_value, address dest_addr); | |
| 54 | |
| 55 // Code info | |
| 56 address code_begin() const { return (address)this + round_to(sizeof(ICStub), CodeEntryAlignment); } | |
| 57 address code_end() const { return (address)this + size(); } | |
| 58 | |
| 59 // Call site info | |
| 60 address ic_site() const { return _ic_site; } | |
| 61 void clear(); | |
| 62 bool is_empty() const { return _ic_site == NULL; } | |
| 63 | |
| 64 // stub info | |
| 65 address destination() const; // destination of jump instruction | |
| 66 oop cached_oop() const; // cached_oop for stub | |
| 67 | |
| 68 // Debugging | |
| 69 void verify() PRODUCT_RETURN; | |
| 70 void print() PRODUCT_RETURN; | |
| 71 | |
| 72 // Creation | |
| 73 friend ICStub* ICStub_from_destination_address(address destination_address); | |
| 74 }; | |
| 75 | |
| 76 // ICStub Creation | |
| 77 inline ICStub* ICStub_from_destination_address(address destination_address) { | |
| 78 ICStub* stub = (ICStub*) (destination_address - round_to(sizeof(ICStub), CodeEntryAlignment)); | |
| 79 #ifdef ASSERT | |
| 80 stub->verify(); | |
| 81 #endif | |
| 82 return stub; | |
| 83 } | |
| 84 | |
| 85 class InlineCacheBuffer: public AllStatic { | |
| 86 private: | |
| 87 // friends | |
| 88 friend class ICStub; | |
| 89 | |
| 90 static int ic_stub_code_size(); | |
| 91 | |
| 92 static StubQueue* _buffer; | |
| 93 static ICStub* _next_stub; | |
| 94 | |
| 95 static StubQueue* buffer() { return _buffer; } | |
| 96 static void set_next_stub(ICStub* next_stub) { _next_stub = next_stub; } | |
| 97 static ICStub* get_next_stub() { return _next_stub; } | |
| 98 | |
| 99 static void init_next_stub(); | |
| 100 | |
| 101 static ICStub* new_ic_stub(); | |
| 102 | |
| 103 | |
| 104 // Machine-dependent implementation of ICBuffer | |
| 105 static void assemble_ic_buffer_code(address code_begin, oop cached_oop, address entry_point); | |
| 106 static address ic_buffer_entry_point (address code_begin); | |
| 107 static oop ic_buffer_cached_oop (address code_begin); | |
| 108 | |
| 109 public: | |
| 110 | |
| 111 // Initialization; must be called before first usage | |
| 112 static void initialize(); | |
| 113 | |
| 114 // Access | |
| 115 static bool contains(address instruction_address); | |
| 116 | |
| 117 // removes the ICStubs after backpatching | |
| 118 static void update_inline_caches(); | |
| 119 | |
| 120 // for debugging | |
| 121 static bool is_empty(); | |
| 122 | |
| 123 | |
| 124 // New interface | |
| 125 static void create_transition_stub(CompiledIC *ic, oop cached_oop, address entry); | |
| 126 static address ic_destination_for(CompiledIC *ic); | |
| 127 static oop cached_oop_for(CompiledIC *ic); | |
| 128 }; |