Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/stackValue.hpp @ 818:b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
Summary: Disable escape analysis when jvmti/debugger is used. Add support for EA ibto SA.
Reviewed-by: never
| author | kvn |
|---|---|
| date | Tue, 09 Jun 2009 16:19:10 -0700 |
| parents | a61af66fc99e |
| children | bd02caa94611 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved. | |
| 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 class StackValue : public ResourceObj { | |
| 26 private: | |
| 27 BasicType _type; | |
| 28 intptr_t _i; // Blank java stack slot value | |
| 29 Handle _o; // Java stack slot value interpreted as a Handle | |
| 30 public: | |
| 31 | |
| 32 StackValue(intptr_t value) { | |
| 33 _type = T_INT; | |
| 34 _i = value; | |
| 35 } | |
| 36 | |
|
818
b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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37 StackValue(Handle value, intptr_t scalar_replaced = 0) { |
| 0 | 38 _type = T_OBJECT; |
|
818
b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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39 _i = scalar_replaced; |
| 0 | 40 _o = value; |
|
818
b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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41 assert(_i == 0 || _o.is_null(), "not null object should not be marked as scalar replaced"); |
| 0 | 42 } |
| 43 | |
| 44 StackValue() { | |
| 45 _type = T_CONFLICT; | |
| 46 _i = 0; | |
| 47 } | |
| 48 | |
| 49 // Only used during deopt- preserve object type. | |
| 50 StackValue(intptr_t o, BasicType t) { | |
| 51 assert(t == T_OBJECT, "should not be used"); | |
| 52 _type = t; | |
| 53 _i = o; | |
| 54 } | |
| 55 | |
| 56 Handle get_obj() const { | |
| 57 assert(type() == T_OBJECT, "type check"); | |
| 58 return _o; | |
| 59 } | |
| 60 | |
|
818
b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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61 bool obj_is_scalar_replaced() const { |
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b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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62 assert(type() == T_OBJECT, "type check"); |
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b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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63 return _i != 0; |
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b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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64 } |
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b109e761e927
6837472: com/sun/jdi/MonitorFrameInfo.java fails with AggressiveOpts in 6u14
kvn
parents:
0
diff
changeset
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65 |
| 0 | 66 void set_obj(Handle value) { |
| 67 assert(type() == T_OBJECT, "type check"); | |
| 68 _o = value; | |
| 69 } | |
| 70 | |
| 71 intptr_t get_int() const { | |
| 72 assert(type() == T_INT, "type check"); | |
| 73 return _i; | |
| 74 } | |
| 75 | |
| 76 // For special case in deopt. | |
| 77 intptr_t get_int(BasicType t) const { | |
| 78 assert(t == T_OBJECT && type() == T_OBJECT, "type check"); | |
| 79 return _i; | |
| 80 } | |
| 81 | |
| 82 void set_int(intptr_t value) { | |
| 83 assert(type() == T_INT, "type check"); | |
| 84 _i = value; | |
| 85 } | |
| 86 | |
| 87 BasicType type() const { return _type; } | |
| 88 | |
| 89 bool equal(StackValue *value) { | |
| 90 if (_type != value->_type) return false; | |
| 91 if (_type == T_OBJECT) | |
| 92 return (_o == value->_o); | |
| 93 else { | |
| 94 assert(_type == T_INT, "sanity check"); | |
| 95 // [phh] compare only low addressed portions of intptr_t slots | |
| 96 return (*(int *)&_i == *(int *)&value->_i); | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 static StackValue* create_stack_value(const frame* fr, const RegisterMap* reg_map, ScopeValue* sv); | |
| 101 static BasicLock* resolve_monitor_lock(const frame* fr, Location location); | |
| 102 | |
| 103 #ifndef PRODUCT | |
| 104 public: | |
| 105 // Printing | |
| 106 void print_on(outputStream* st) const; | |
| 107 #endif | |
| 108 }; |