Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/compilationPolicy.hpp @ 1783:d5d065957597
6953144: Tiered compilation
Summary: Infrastructure for tiered compilation support (interpreter + c1 + c2) for 32 and 64 bit. Simple tiered policy implementation.
Reviewed-by: kvn, never, phh, twisti
| author | iveresov |
|---|---|
| date | Fri, 03 Sep 2010 17:51:07 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1783 | 2 * Copyright (c) 2000, 2010, 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 | |
| 25 // The CompilationPolicy selects which method (if any) should be compiled. | |
| 26 // It also decides which methods must always be compiled (i.e., are never | |
| 27 // interpreted). | |
| 1783 | 28 class CompileTask; |
| 29 class CompileQueue; | |
| 0 | 30 |
| 31 class CompilationPolicy : public CHeapObj { | |
| 32 static CompilationPolicy* _policy; | |
| 33 // Accumulated time | |
| 34 static elapsedTimer _accumulated_time; | |
| 35 | |
| 36 static bool _in_vm_startup; | |
| 1783 | 37 public: |
| 0 | 38 static void set_in_vm_startup(bool in_vm_startup) { _in_vm_startup = in_vm_startup; } |
| 39 static void completed_vm_startup(); | |
| 1783 | 40 static bool delay_compilation_during_startup() { return _in_vm_startup; } |
| 0 | 41 |
| 1783 | 42 // m must be compiled before executing it |
| 43 static bool must_be_compiled(methodHandle m, int comp_level = CompLevel_all); | |
| 44 // m is allowed to be compiled | |
| 45 static bool can_be_compiled(methodHandle m, int comp_level = CompLevel_all); | |
| 46 static bool is_compilation_enabled(); | |
| 0 | 47 static void set_policy(CompilationPolicy* policy) { _policy = policy; } |
| 1783 | 48 static CompilationPolicy* policy() { return _policy; } |
| 0 | 49 |
| 50 // Profiling | |
| 51 elapsedTimer* accumulated_time() { return &_accumulated_time; } | |
| 52 void print_time() PRODUCT_RETURN; | |
| 1783 | 53 virtual int compiler_count(CompLevel comp_level) = 0; |
| 54 // main notification entry, return a pointer to an nmethod if the OSR is required, | |
| 55 // returns NULL otherwise. | |
| 56 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, TRAPS) = 0; | |
| 57 // safepoint() is called at the end of the safepoint | |
| 58 virtual void do_safepoint_work() = 0; | |
| 59 // reprofile request | |
| 60 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr) = 0; | |
| 61 // delay_compilation(method) can be called by any component of the runtime to notify the policy | |
| 62 // that it's recommended to delay the complation of this method. | |
| 63 virtual void delay_compilation(methodOop method) = 0; | |
| 64 // disable_compilation() is called whenever the runtime decides to disable compilation of the | |
| 65 // specified method. | |
| 66 virtual void disable_compilation(methodOop method) = 0; | |
| 67 // Select task is called by CompileBroker. The queue is guaranteed to have at least one | |
| 68 // element and is locked. The function should select one and return it. | |
| 69 virtual CompileTask* select_task(CompileQueue* compile_queue) = 0; | |
| 70 // Tell the runtime if we think a given method is adequately profiled. | |
| 71 virtual bool is_mature(methodOop method) = 0; | |
| 72 // Do policy initialization | |
| 73 virtual void initialize() = 0; | |
| 0 | 74 }; |
| 75 | |
| 1783 | 76 // A base class for baseline policies. |
| 77 class NonTieredCompPolicy : public CompilationPolicy { | |
| 78 int _compiler_count; | |
| 79 protected: | |
| 80 static void trace_frequency_counter_overflow(methodHandle m, int branch_bci, int bci); | |
| 81 static void trace_osr_request(methodHandle method, nmethod* osr, int bci); | |
| 82 static void trace_osr_completion(nmethod* osr_nm); | |
| 83 void reset_counter_for_invocation_event(methodHandle method); | |
| 84 void reset_counter_for_back_branch_event(methodHandle method); | |
| 85 public: | |
| 86 NonTieredCompPolicy() : _compiler_count(0) { } | |
| 87 virtual int compiler_count(CompLevel comp_level); | |
| 88 virtual void do_safepoint_work(); | |
| 89 virtual void reprofile(ScopeDesc* trap_scope, bool is_osr); | |
| 90 virtual void delay_compilation(methodOop method); | |
| 91 virtual void disable_compilation(methodOop method); | |
| 92 virtual bool is_mature(methodOop method); | |
| 93 virtual void initialize(); | |
| 94 virtual CompileTask* select_task(CompileQueue* compile_queue); | |
| 95 virtual nmethod* event(methodHandle method, methodHandle inlinee, int branch_bci, int bci, CompLevel comp_level, TRAPS); | |
| 96 virtual void method_invocation_event(methodHandle m, TRAPS) = 0; | |
| 97 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS) = 0; | |
| 98 }; | |
| 99 | |
| 100 class SimpleCompPolicy : public NonTieredCompPolicy { | |
| 0 | 101 public: |
| 1783 | 102 virtual void method_invocation_event(methodHandle m, TRAPS); |
| 103 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS); | |
| 0 | 104 }; |
| 105 | |
| 106 // StackWalkCompPolicy - existing C2 policy | |
| 107 | |
| 108 #ifdef COMPILER2 | |
| 1783 | 109 class StackWalkCompPolicy : public NonTieredCompPolicy { |
| 0 | 110 public: |
| 1783 | 111 virtual void method_invocation_event(methodHandle m, TRAPS); |
| 112 virtual void method_back_branch_event(methodHandle m, int bci, TRAPS); | |
| 0 | 113 |
| 114 private: | |
| 115 RFrame* findTopInlinableFrame(GrowableArray<RFrame*>* stack); | |
| 116 RFrame* senderOf(RFrame* rf, GrowableArray<RFrame*>* stack); | |
| 117 | |
| 118 // the following variables hold values computed by the last inlining decision | |
| 119 // they are used for performance debugging only (print better messages) | |
| 120 static const char* _msg; // reason for not inlining | |
| 121 | |
| 122 static const char* shouldInline (methodHandle callee, float frequency, int cnt); | |
| 123 // positive filter: should send be inlined? returns NULL (--> yes) or rejection msg | |
| 124 static const char* shouldNotInline(methodHandle callee); | |
| 125 // negative filter: should send NOT be inlined? returns NULL (--> inline) or rejection msg | |
| 126 | |
| 127 }; | |
| 128 #endif |