Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/javaCalls.hpp @ 1145:e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
Summary: Autonomic per-worker free block cache sizing, tunable coalition policies, fixes to per-size block statistics, retuned gain and bandwidth of some feedback loop filters to allow quicker reactivity to abrupt changes in ambient demand, and other heuristics to reduce fragmentation of the CMS old gen. Also tightened some assertions, including those related to locking.
Reviewed-by: jmasa
| author | ysr |
|---|---|
| date | Wed, 23 Dec 2009 09:23:54 -0800 |
| parents | ad8c8ca4ab0f |
| children | 6223633ce7dd 2338d41fbd81 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 470 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // A JavaCallWrapper is constructed before each JavaCall and destructed after the call. | |
| 26 // Its purpose is to allocate/deallocate a new handle block and to save/restore the last | |
| 27 // Java fp/sp. A pointer to the JavaCallWrapper is stored on the stack. | |
| 28 | |
| 29 class JavaCallWrapper: StackObj { | |
| 30 friend class VMStructs; | |
| 31 private: | |
| 32 JavaThread* _thread; // the thread to which this call belongs | |
| 33 JNIHandleBlock* _handles; // the saved handle block | |
| 34 methodOop _callee_method; // to be able to collect arguments if entry frame is top frame | |
| 35 oop _receiver; // the receiver of the call (if a non-static call) | |
| 36 | |
| 37 JavaFrameAnchor _anchor; // last thread anchor state that we must restore | |
| 38 | |
| 39 JavaValue* _result; // result value | |
| 40 | |
| 41 public: | |
| 42 // Construction/destruction | |
| 43 JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS); | |
| 44 ~JavaCallWrapper(); | |
| 45 | |
| 46 // Accessors | |
| 47 JavaThread* thread() const { return _thread; } | |
| 48 JNIHandleBlock* handles() const { return _handles; } | |
| 49 | |
| 50 JavaFrameAnchor* anchor(void) { return &_anchor; } | |
| 51 | |
| 52 JavaValue* result() const { return _result; } | |
| 53 // GC support | |
| 54 methodOop callee_method() { return _callee_method; } | |
| 55 oop receiver() { return _receiver; } | |
| 56 void oops_do(OopClosure* f); | |
| 57 | |
| 58 }; | |
| 59 | |
| 60 | |
| 61 // Encapsulates arguments to a JavaCall (faster, safer, and more convenient than using var-args) | |
| 62 class JavaCallArguments : public StackObj { | |
| 63 private: | |
| 64 enum Constants { | |
| 65 _default_size = 8 // Must be at least # of arguments in JavaCalls methods | |
| 66 }; | |
| 67 | |
| 68 intptr_t _value_buffer [_default_size + 1]; | |
| 69 intptr_t _parameter_buffer [_default_size*2 + 1]; | |
| 70 bool _is_oop_buffer[_default_size + 1]; | |
| 71 | |
| 72 intptr_t* _value; | |
| 73 intptr_t* _parameters; | |
| 74 bool* _is_oop; | |
| 75 int _size; | |
| 76 int _max_size; | |
| 77 bool _start_at_zero; // Support late setting of receiver | |
| 78 | |
| 79 void initialize() { | |
| 80 // Starts at first element to support set_receiver. | |
| 81 _value = &_value_buffer[1]; | |
| 82 _is_oop = &_is_oop_buffer[1]; | |
| 83 | |
| 84 _parameters = &_parameter_buffer[0]; | |
| 85 _max_size = _default_size; | |
| 86 _size = 0; | |
| 87 _start_at_zero = false; | |
| 88 } | |
| 89 | |
| 90 public: | |
| 91 JavaCallArguments() { initialize(); } | |
| 92 | |
| 93 JavaCallArguments(Handle receiver) { | |
| 94 initialize(); | |
| 95 push_oop(receiver); | |
| 96 } | |
| 97 | |
| 98 JavaCallArguments(int max_size) { | |
| 99 if (max_size > _default_size) { | |
| 100 _value = NEW_RESOURCE_ARRAY(intptr_t, max_size + 1); | |
| 101 _is_oop = NEW_RESOURCE_ARRAY(bool, max_size + 1); | |
| 102 if (TaggedStackInterpreter) { | |
| 103 _parameters = NEW_RESOURCE_ARRAY(intptr_t, max_size*2 + 1); | |
| 104 } | |
| 105 // Reserve room for potential receiver in value and is_oop | |
| 106 _value++; _is_oop++; | |
| 107 _max_size = max_size; | |
| 108 _size = 0; | |
| 109 _start_at_zero = false; | |
| 110 } else { | |
| 111 initialize(); | |
| 112 } | |
| 113 } | |
| 114 | |
| 115 inline void push_oop(Handle h) { _is_oop[_size] = true; | |
| 116 JNITypes::put_obj((oop)h.raw_value(), _value, _size); } | |
| 117 | |
| 118 inline void push_int(int i) { _is_oop[_size] = false; | |
| 119 JNITypes::put_int(i, _value, _size); } | |
| 120 | |
| 121 inline void push_double(double d) { _is_oop[_size] = false; _is_oop[_size + 1] = false; | |
| 122 JNITypes::put_double(d, _value, _size); } | |
| 123 | |
| 124 inline void push_long(jlong l) { _is_oop[_size] = false; _is_oop[_size + 1] = false; | |
| 125 JNITypes::put_long(l, _value, _size); } | |
| 126 | |
| 127 inline void push_float(float f) { _is_oop[_size] = false; | |
| 128 JNITypes::put_float(f, _value, _size); } | |
| 129 | |
| 130 // receiver | |
| 131 Handle receiver() { | |
| 132 assert(_size > 0, "must at least be one argument"); | |
| 133 assert(_is_oop[0], "first argument must be an oop"); | |
| 134 assert(_value[0] != 0, "receiver must be not-null"); | |
| 135 return Handle((oop*)_value[0], false); | |
| 136 } | |
| 137 | |
| 138 void set_receiver(Handle h) { | |
| 139 assert(_start_at_zero == false, "can only be called once"); | |
| 140 _start_at_zero = true; | |
| 141 _is_oop--; | |
| 142 _value--; | |
| 143 _size++; | |
| 144 _is_oop[0] = true; | |
| 145 _value[0] = (intptr_t)h.raw_value(); | |
| 146 } | |
| 147 | |
| 148 // Converts all Handles to oops, and returns a reference to parameter vector | |
| 149 intptr_t* parameters() ; | |
| 150 int size_of_parameters() const { return _size; } | |
| 151 | |
| 152 // Verify that pushed arguments fits a given method | |
|
465
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
0
diff
changeset
|
153 void verify(methodHandle method, BasicType return_type, Thread *thread); |
| 0 | 154 }; |
| 155 | |
| 156 // All calls to Java have to go via JavaCalls. Sets up the stack frame | |
| 157 // and makes sure that the last_Java_frame pointers are chained correctly. | |
| 158 // | |
| 159 | |
| 160 class JavaCalls: AllStatic { | |
| 161 static void call_helper(JavaValue* result, methodHandle* method, JavaCallArguments* args, TRAPS); | |
| 162 public: | |
| 163 // Optimized Constuctor call | |
| 164 static void call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS); | |
| 165 | |
| 166 // call_special | |
| 167 // ------------ | |
| 168 // The receiver must be first oop in argument list | |
| 169 static void call_special(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS); | |
| 170 | |
| 171 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS); // No args | |
| 172 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS); | |
| 173 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS); | |
| 174 | |
| 175 // virtual call | |
| 176 // ------------ | |
| 177 | |
| 178 // The receiver must be first oop in argument list | |
| 179 static void call_virtual(JavaValue* result, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS); | |
| 180 | |
| 181 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, TRAPS); // No args | |
| 182 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS); | |
| 183 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS); | |
| 184 | |
| 185 // Static call | |
| 186 // ----------- | |
| 187 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS); | |
| 188 | |
| 189 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS); | |
| 190 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS); | |
| 191 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS); | |
| 192 | |
| 193 // Low-level interface | |
| 194 static void call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS); | |
| 195 }; |