Mercurial > hg > truffle
annotate src/share/vm/interpreter/cppInterpreter.cpp @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
author | tschatzl |
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date | Fri, 10 Oct 2014 15:51:58 +0200 |
parents | a3e2f723f2a5 |
children |
rev | line source |
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0 | 1 /* |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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2 * Copyright (c) 1997, 2011, 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 #include "precompiled.hpp" |
26 #include "interpreter/bytecodeInterpreter.hpp" | |
27 #include "interpreter/interpreter.hpp" | |
28 #include "interpreter/interpreterGenerator.hpp" | |
29 #include "interpreter/interpreterRuntime.hpp" | |
0 | 30 |
31 #ifdef CC_INTERP | |
32 # define __ _masm-> | |
33 | |
34 void CppInterpreter::initialize() { | |
35 if (_code != NULL) return; | |
36 AbstractInterpreter::initialize(); | |
37 | |
38 // generate interpreter | |
39 { ResourceMark rm; | |
40 TraceTime timer("Interpreter generation", TraceStartupTime); | |
41 int code_size = InterpreterCodeSize; | |
42 NOT_PRODUCT(code_size *= 4;) // debug uses extra interpreter code space | |
43 _code = new StubQueue(new InterpreterCodeletInterface, code_size, NULL, | |
44 "Interpreter"); | |
45 InterpreterGenerator g(_code); | |
46 if (PrintInterpreter) print(); | |
47 } | |
48 | |
49 | |
50 // Allow c++ interpreter to do one initialization now that switches are set, etc. | |
51 BytecodeInterpreter start_msg(BytecodeInterpreter::initialize); | |
52 if (JvmtiExport::can_post_interpreter_events()) | |
53 BytecodeInterpreter::runWithChecks(&start_msg); | |
54 else | |
55 BytecodeInterpreter::run(&start_msg); | |
56 } | |
57 | |
58 | |
59 address CppInterpreter::_tosca_to_stack [AbstractInterpreter::number_of_result_handlers]; | |
60 address CppInterpreter::_stack_to_stack [AbstractInterpreter::number_of_result_handlers]; | |
61 address CppInterpreter::_stack_to_native_abi [AbstractInterpreter::number_of_result_handlers]; | |
62 | |
63 CppInterpreterGenerator::CppInterpreterGenerator(StubQueue* _code): AbstractInterpreterGenerator(_code) { | |
64 } | |
65 | |
66 static const BasicType types[Interpreter::number_of_result_handlers] = { | |
67 T_BOOLEAN, | |
68 T_CHAR , | |
69 T_BYTE , | |
70 T_SHORT , | |
71 T_INT , | |
72 T_LONG , | |
73 T_VOID , | |
74 T_FLOAT , | |
75 T_DOUBLE , | |
76 T_OBJECT | |
77 }; | |
78 | |
79 void CppInterpreterGenerator::generate_all() { | |
80 AbstractInterpreterGenerator::generate_all(); | |
81 | |
82 { CodeletMark cm(_masm, "result handlers for native calls"); | |
83 // The various result converter stublets. | |
84 int is_generated[Interpreter::number_of_result_handlers]; | |
85 memset(is_generated, 0, sizeof(is_generated)); | |
86 int _tosca_to_stack_is_generated[Interpreter::number_of_result_handlers]; | |
87 int _stack_to_stack_is_generated[Interpreter::number_of_result_handlers]; | |
88 int _stack_to_native_abi_is_generated[Interpreter::number_of_result_handlers]; | |
89 | |
90 memset(_tosca_to_stack_is_generated, 0, sizeof(_tosca_to_stack_is_generated)); | |
91 memset(_stack_to_stack_is_generated, 0, sizeof(_stack_to_stack_is_generated)); | |
92 memset(_stack_to_native_abi_is_generated, 0, sizeof(_stack_to_native_abi_is_generated)); | |
93 for (int i = 0; i < Interpreter::number_of_result_handlers; i++) { | |
94 BasicType type = types[i]; | |
95 if (!is_generated[Interpreter::BasicType_as_index(type)]++) { | |
96 Interpreter::_native_abi_to_tosca[Interpreter::BasicType_as_index(type)] = generate_result_handler_for(type); | |
97 } | |
98 if (!_tosca_to_stack_is_generated[Interpreter::BasicType_as_index(type)]++) { | |
99 Interpreter::_tosca_to_stack[Interpreter::BasicType_as_index(type)] = generate_tosca_to_stack_converter(type); | |
100 } | |
101 if (!_stack_to_stack_is_generated[Interpreter::BasicType_as_index(type)]++) { | |
102 Interpreter::_stack_to_stack[Interpreter::BasicType_as_index(type)] = generate_stack_to_stack_converter(type); | |
103 } | |
104 if (!_stack_to_native_abi_is_generated[Interpreter::BasicType_as_index(type)]++) { | |
105 Interpreter::_stack_to_native_abi[Interpreter::BasicType_as_index(type)] = generate_stack_to_native_abi_converter(type); | |
106 } | |
107 } | |
108 } | |
109 | |
110 | |
111 #define method_entry(kind) Interpreter::_entry_table[Interpreter::kind] = generate_method_entry(Interpreter::kind) | |
112 | |
113 { CodeletMark cm(_masm, "(kind = frame_manager)"); | |
114 // all non-native method kinds | |
115 method_entry(zerolocals); | |
116 method_entry(zerolocals_synchronized); | |
117 method_entry(empty); | |
118 method_entry(accessor); | |
119 method_entry(abstract); | |
120 method_entry(java_lang_math_sin ); | |
121 method_entry(java_lang_math_cos ); | |
122 method_entry(java_lang_math_tan ); | |
123 method_entry(java_lang_math_abs ); | |
124 method_entry(java_lang_math_sqrt ); | |
125 method_entry(java_lang_math_log ); | |
126 method_entry(java_lang_math_log10 ); | |
6926 | 127 method_entry(java_lang_math_pow ); |
128 method_entry(java_lang_math_exp ); | |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
1972
diff
changeset
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129 method_entry(java_lang_ref_reference_get); |
6926 | 130 |
131 initialize_method_handle_entries(); | |
132 | |
0 | 133 Interpreter::_native_entry_begin = Interpreter::code()->code_end(); |
134 method_entry(native); | |
135 method_entry(native_synchronized); | |
136 Interpreter::_native_entry_end = Interpreter::code()->code_end(); | |
137 } | |
138 | |
139 | |
140 #undef method_entry | |
141 | |
142 } | |
143 | |
144 #endif // CC_INTERP |