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1 /* |
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2 * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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20 * CA 95054 USA or visit www.sun.com if you need additional information or |
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21 * have any questions. |
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22 * |
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23 */ |
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24 |
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25 class compiledVFrame: public javaVFrame { |
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26 public: |
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27 // JVM state |
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28 methodOop method() const; |
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29 int bci() const; |
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30 StackValueCollection* locals() const; |
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31 StackValueCollection* expressions() const; |
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32 GrowableArray<MonitorInfo*>* monitors() const; |
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33 |
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34 void set_locals(StackValueCollection* values) const; |
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35 |
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36 // Virtuals defined in vframe |
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37 bool is_compiled_frame() const { return true; } |
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38 vframe* sender() const; |
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39 bool is_top() const; |
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40 |
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41 // Casting |
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42 static compiledVFrame* cast(vframe* vf) { |
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43 assert(vf == NULL || vf->is_compiled_frame(), "must be compiled frame"); |
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44 return (compiledVFrame*) vf; |
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45 } |
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46 |
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47 public: |
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48 // Constructors |
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49 compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, nmethod* nm); |
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50 |
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51 // Update a local in a compiled frame. Update happens when deopt occurs |
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52 void update_local(BasicType type, int index, jvalue value); |
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53 |
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54 // Returns the active nmethod |
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55 nmethod* code() const; |
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56 |
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57 // Returns the scopeDesc |
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58 ScopeDesc* scope() const { return _scope; } |
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59 |
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60 // Returns SynchronizationEntryBCI or bci() (used for synchronization) |
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61 int raw_bci() const; |
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62 |
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63 protected: |
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64 ScopeDesc* _scope; |
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65 |
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66 |
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67 //StackValue resolve(ScopeValue* sv) const; |
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68 BasicLock* resolve_monitor_lock(Location location) const; |
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69 StackValue *create_stack_value(ScopeValue *sv) const; |
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70 |
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71 private: |
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72 compiledVFrame(const frame* fr, const RegisterMap* reg_map, JavaThread* thread, ScopeDesc* scope); |
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73 |
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74 #ifndef PRODUCT |
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75 public: |
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76 void verify() const; |
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77 #endif |
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78 }; |
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79 |
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80 // In order to implement set_locals for compiled vframes we must |
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81 // store updated locals in a data structure that contains enough |
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82 // information to recognize equality with a vframe and to store |
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83 // any updated locals. |
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84 |
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85 class jvmtiDeferredLocalVariable; |
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86 class jvmtiDeferredLocalVariableSet : public CHeapObj { |
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87 private: |
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88 |
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89 methodOop _method; // must be GC'd |
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90 int _bci; |
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91 intptr_t* _id; |
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92 GrowableArray<jvmtiDeferredLocalVariable*>* _locals; |
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93 |
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94 public: |
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95 // JVM state |
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96 methodOop method() const { return _method; } |
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97 int bci() const { return _bci; } |
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98 intptr_t* id() const { return _id; } |
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99 GrowableArray<jvmtiDeferredLocalVariable*>* locals() const { return _locals; } |
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100 void set_local_at(int idx, BasicType typ, jvalue val); |
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101 |
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102 // Does the vframe match this jvmtiDeferredLocalVariableSet |
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103 bool matches(vframe* vf); |
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104 // GC |
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105 void oops_do(OopClosure* f); |
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106 |
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107 // constructor |
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108 jvmtiDeferredLocalVariableSet(methodOop method, int bci, intptr_t* id); |
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109 |
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110 // destructor |
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111 ~jvmtiDeferredLocalVariableSet(); |
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112 |
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113 |
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114 }; |
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115 |
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116 class jvmtiDeferredLocalVariable : public CHeapObj { |
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117 public: |
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118 |
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119 jvmtiDeferredLocalVariable(int index, BasicType type, jvalue value); |
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120 |
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121 BasicType type(void) { return _type; } |
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122 int index(void) { return _index; } |
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123 jvalue value(void) { return _value; } |
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124 // Only mutator is for value as only it can change |
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125 void set_value(jvalue value) { _value = value; } |
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126 // For gc |
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127 oop* oop_addr(void) { return (oop*) &_value.l; } |
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128 |
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129 private: |
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130 |
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131 BasicType _type; |
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132 jvalue _value; |
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133 int _index; |
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134 |
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135 }; |