Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/compilationPolicy.hpp @ 18096:ca6d25be853b jdk8u25-b13
8044269: Analysis of archive files.
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Reviewed-by: iklam, dholmes, mschoene
| author | jiangli |
|---|---|
| date | Tue, 12 Aug 2014 17:46:16 -0400 |
| parents | 55fb97c4c58d |
| children | 63a4eb8bcd23 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2000, 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_RUNTIME_COMPILATIONPOLICY_HPP |
| 26 #define SHARE_VM_RUNTIME_COMPILATIONPOLICY_HPP | |
| 27 | |
| 28 #include "code/nmethod.hpp" | |
| 29 #include "compiler/compileBroker.hpp" | |
| 30 #include "memory/allocation.hpp" | |
| 31 #include "runtime/vm_operations.hpp" | |
| 32 #include "utilities/growableArray.hpp" | |
| 33 | |
| 0 | 34 // The CompilationPolicy selects which method (if any) should be compiled. |
| 35 // It also decides which methods must always be compiled (i.e., are never | |
| 36 // interpreted). | |
| 1783 | 37 class CompileTask; |
| 38 class CompileQueue; | |
| 0 | 39 |
| 6197 | 40 class CompilationPolicy : public CHeapObj<mtCompiler> { |
| 0 | 41 static CompilationPolicy* _policy; |
| 42 // Accumulated time | |
| 43 static elapsedTimer _accumulated_time; | |
| 44 | |
| 45 static bool _in_vm_startup; | |
| 1783 | 46 public: |
| 0 | 47 static void set_in_vm_startup(bool in_vm_startup) { _in_vm_startup = in_vm_startup; } |
| 48 static void completed_vm_startup(); | |
| 1783 | 49 static bool delay_compilation_during_startup() { return _in_vm_startup; } |
| 0 | 50 |
| 1783 | 51 // m must be compiled before executing it |
| 52 static bool must_be_compiled(methodHandle m, int comp_level = CompLevel_all); | |
| 53 // m is allowed to be compiled | |
| 54 static bool can_be_compiled(methodHandle m, int comp_level = CompLevel_all); | |
| 12073 | 55 // m is allowed to be osr compiled |
| 56 static bool can_be_osr_compiled(methodHandle m, int comp_level = CompLevel_all); | |
| 1783 | 57 static bool is_compilation_enabled(); |
| 0 | 58 static void set_policy(CompilationPolicy* policy) { _policy = policy; } |
| 1783 | 59 static CompilationPolicy* policy() { return _policy; } |
| 0 | 60 |
| 61 // Profiling | |
| 62 elapsedTimer* accumulated_time() { return &_accumulated_time; } | |
| 63 void print_time() PRODUCT_RETURN; | |
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64 // Return initial compile level that is used with Xcomp |
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65 virtual CompLevel initial_compile_level() = 0; |
| 1783 | 66 virtual int compiler_count(CompLevel comp_level) = 0; |
| 67 // main notification entry, return a pointer to an nmethod if the OSR is required, | |
| 68 // returns NULL otherwise. | |
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69 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread) = 0; |
| 1783 | 70 // safepoint() is called at the end of the safepoint |
| 71 virtual void do_safepoint_work() = 0; | |
| 72 // reprofile request | |
| 73 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr) = 0; | |
| 74 // delay_compilation(method) can be called by any component of the runtime to notify the policy | |
| 75 // that it's recommended to delay the complation of this method. | |
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76 virtual void delay_compilation(Method* method) = 0; |
| 1783 | 77 // disable_compilation() is called whenever the runtime decides to disable compilation of the |
| 78 // specified method. | |
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79 virtual void disable_compilation(Method* method) = 0; |
| 1783 | 80 // Select task is called by CompileBroker. The queue is guaranteed to have at least one |
| 81 // element and is locked. The function should select one and return it. | |
| 82 virtual CompileTask* select_task(CompileQueue* compile_queue) = 0; | |
| 83 // Tell the runtime if we think a given method is adequately profiled. | |
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84 virtual bool is_mature(Method* method) = 0; |
| 1783 | 85 // Do policy initialization |
| 86 virtual void initialize() = 0; | |
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87 virtual bool should_not_inline(ciEnv* env, ciMethod* method) { return false; } |
| 0 | 88 }; |
| 89 | |
| 1783 | 90 // A base class for baseline policies. |
| 91 class NonTieredCompPolicy : public CompilationPolicy { | |
| 92 int _compiler_count; | |
| 93 protected: | |
| 94 static void trace_frequency_counter_overflow(methodHandle m, int branch_bci, int bci); | |
| 95 static void trace_osr_request(methodHandle method, nmethod* osr, int bci); | |
| 96 static void trace_osr_completion(nmethod* osr_nm); | |
| 97 void reset_counter_for_invocation_event(methodHandle method); | |
| 98 void reset_counter_for_back_branch_event(methodHandle method); | |
| 99 public: | |
| 100 NonTieredCompPolicy() : _compiler_count(0) { } | |
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101 virtual CompLevel initial_compile_level() { return CompLevel_highest_tier; } |
| 1783 | 102 virtual int compiler_count(CompLevel comp_level); |
| 103 virtual void do_safepoint_work(); | |
| 104 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr); | |
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105 virtual void delay_compilation(Method* method); |
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106 virtual void disable_compilation(Method* method); |
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107 virtual bool is_mature(Method* method); |
| 1783 | 108 virtual void initialize(); |
| 109 virtual CompileTask* select_task(CompileQueue* compile_queue); | |
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110 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, nmethod* nm, JavaThread* thread); |
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111 virtual void method_invocation_event(methodHandle m, JavaThread* thread) = 0; |
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112 virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread) = 0; |
| 1783 | 113 }; |
| 114 | |
| 115 class SimpleCompPolicy : public NonTieredCompPolicy { | |
| 0 | 116 public: |
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117 virtual void method_invocation_event(methodHandle m, JavaThread* thread); |
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118 virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread); |
| 0 | 119 }; |
| 120 | |
| 121 // StackWalkCompPolicy - existing C2 policy | |
| 122 | |
| 123 #ifdef COMPILER2 | |
| 1783 | 124 class StackWalkCompPolicy : public NonTieredCompPolicy { |
| 0 | 125 public: |
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126 virtual void method_invocation_event(methodHandle m, JavaThread* thread); |
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127 virtual void method_back_branch_event(methodHandle m, int bci, JavaThread* thread); |
| 0 | 128 |
| 129 private: | |
| 130 RFrame* findTopInlinableFrame(GrowableArray<RFrame*>* stack); | |
| 131 RFrame* senderOf(RFrame* rf, GrowableArray<RFrame*>* stack); | |
| 132 | |
| 133 // the following variables hold values computed by the last inlining decision | |
| 134 // they are used for performance debugging only (print better messages) | |
| 135 static const char* _msg; // reason for not inlining | |
| 136 | |
| 137 static const char* shouldInline (methodHandle callee, float frequency, int cnt); | |
| 138 // positive filter: should send be inlined? returns NULL (--> yes) or rejection msg | |
| 139 static const char* shouldNotInline(methodHandle callee); | |
| 140 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg | |
| 141 | |
| 142 }; | |
| 143 #endif | |
| 1972 | 144 |
| 145 #endif // SHARE_VM_RUNTIME_COMPILATIONPOLICY_HPP |