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comparison src/share/vm/code/icBuffer.hpp @ 6725:da91efe96a93

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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
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6724:36d1d483d5d6 6725:da91efe96a93
1 /* 1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
55 int size() const { return _size; } 55 int size() const { return _size; }
56 static int code_size_to_size(int code_size) { return round_to(sizeof(ICStub), CodeEntryAlignment) + code_size; } 56 static int code_size_to_size(int code_size) { return round_to(sizeof(ICStub), CodeEntryAlignment) + code_size; }
57 57
58 public: 58 public:
59 // Creation 59 // Creation
60 void set_stub(CompiledIC *ic, oop cached_value, address dest_addr); 60 void set_stub(CompiledIC *ic, void* cached_value, address dest_addr);
61 61
62 // Code info 62 // Code info
63 address code_begin() const { return (address)this + round_to(sizeof(ICStub), CodeEntryAlignment); } 63 address code_begin() const { return (address)this + round_to(sizeof(ICStub), CodeEntryAlignment); }
64 address code_end() const { return (address)this + size(); } 64 address code_end() const { return (address)this + size(); }
65 65
68 void clear(); 68 void clear();
69 bool is_empty() const { return _ic_site == NULL; } 69 bool is_empty() const { return _ic_site == NULL; }
70 70
71 // stub info 71 // stub info
72 address destination() const; // destination of jump instruction 72 address destination() const; // destination of jump instruction
73 oop cached_oop() const; // cached_oop for stub 73 void* cached_value() const; // cached_value for stub
74 74
75 // Debugging 75 // Debugging
76 void verify() PRODUCT_RETURN; 76 void verify() PRODUCT_RETURN;
77 void print() PRODUCT_RETURN; 77 void print() PRODUCT_RETURN;
78 78
97 static int ic_stub_code_size(); 97 static int ic_stub_code_size();
98 98
99 static StubQueue* _buffer; 99 static StubQueue* _buffer;
100 static ICStub* _next_stub; 100 static ICStub* _next_stub;
101 101
102 static CompiledICHolder* _pending_released;
103 static int _pending_count;
104
102 static StubQueue* buffer() { return _buffer; } 105 static StubQueue* buffer() { return _buffer; }
103 static void set_next_stub(ICStub* next_stub) { _next_stub = next_stub; } 106 static void set_next_stub(ICStub* next_stub) { _next_stub = next_stub; }
104 static ICStub* get_next_stub() { return _next_stub; } 107 static ICStub* get_next_stub() { return _next_stub; }
105 108
106 static void init_next_stub(); 109 static void init_next_stub();
107 110
108 static ICStub* new_ic_stub(); 111 static ICStub* new_ic_stub();
109 112
110 113
111 // Machine-dependent implementation of ICBuffer 114 // Machine-dependent implementation of ICBuffer
112 static void assemble_ic_buffer_code(address code_begin, oop cached_oop, address entry_point); 115 static void assemble_ic_buffer_code(address code_begin, void* cached_value, address entry_point);
113 static address ic_buffer_entry_point (address code_begin); 116 static address ic_buffer_entry_point (address code_begin);
114 static oop ic_buffer_cached_oop (address code_begin); 117 static void* ic_buffer_cached_value (address code_begin);
115 118
116 public: 119 public:
117 120
118 // Initialization; must be called before first usage 121 // Initialization; must be called before first usage
119 static void initialize(); 122 static void initialize();
125 static void update_inline_caches(); 128 static void update_inline_caches();
126 129
127 // for debugging 130 // for debugging
128 static bool is_empty(); 131 static bool is_empty();
129 132
133 static void release_pending_icholders();
134 static void queue_for_release(CompiledICHolder* icholder);
135 static int pending_icholder_count() { return _pending_count; }
130 136
131 // New interface 137 // New interface
132 static void create_transition_stub(CompiledIC *ic, oop cached_oop, address entry); 138 static void create_transition_stub(CompiledIC *ic, void* cached_value, address entry);
133 static address ic_destination_for(CompiledIC *ic); 139 static address ic_destination_for(CompiledIC *ic);
134 static oop cached_oop_for(CompiledIC *ic); 140 static void* cached_value_for(CompiledIC *ic);
135 }; 141 };
136 142
137 #endif // SHARE_VM_CODE_ICBUFFER_HPP 143 #endif // SHARE_VM_CODE_ICBUFFER_HPP