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0
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1 /*
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2 * Copyright 1997-2007 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 #include "incls/_precompiled.incl"
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26 #include "incls/_interpreterRuntime.cpp.incl"
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27
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28 class UnlockFlagSaver {
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29 private:
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30 JavaThread* _thread;
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31 bool _do_not_unlock;
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32 public:
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33 UnlockFlagSaver(JavaThread* t) {
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34 _thread = t;
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35 _do_not_unlock = t->do_not_unlock_if_synchronized();
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36 t->set_do_not_unlock_if_synchronized(false);
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37 }
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38 ~UnlockFlagSaver() {
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39 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock);
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40 }
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41 };
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42
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43 //------------------------------------------------------------------------------------------------------------------------
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44 // State accessors
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45
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46 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) {
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47 last_frame(thread).interpreter_frame_set_bcp(bcp);
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48 if (ProfileInterpreter) {
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49 // ProfileTraps uses MDOs independently of ProfileInterpreter.
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50 // That is why we must check both ProfileInterpreter and mdo != NULL.
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51 methodDataOop mdo = last_frame(thread).interpreter_frame_method()->method_data();
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52 if (mdo != NULL) {
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53 NEEDS_CLEANUP;
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54 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci()));
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55 }
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56 }
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57 }
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58
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59 //------------------------------------------------------------------------------------------------------------------------
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60 // Constants
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61
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62
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63 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide))
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64 // access constant pool
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65 constantPoolOop pool = method(thread)->constants();
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66 int index = wide ? two_byte_index(thread) : one_byte_index(thread);
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67 constantTag tag = pool->tag_at(index);
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68
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69 if (tag.is_unresolved_klass() || tag.is_klass()) {
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70 klassOop klass = pool->klass_at(index, CHECK);
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71 oop java_class = klass->klass_part()->java_mirror();
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72 thread->set_vm_result(java_class);
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73 } else {
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74 #ifdef ASSERT
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75 // If we entered this runtime routine, we believed the tag contained
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76 // an unresolved string, an unresolved class or a resolved class.
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77 // However, another thread could have resolved the unresolved string
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78 // or class by the time we go there.
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79 assert(tag.is_unresolved_string()|| tag.is_string(), "expected string");
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80 #endif
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81 oop s_oop = pool->string_at(index, CHECK);
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82 thread->set_vm_result(s_oop);
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83 }
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84 IRT_END
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85
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86
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87 //------------------------------------------------------------------------------------------------------------------------
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88 // Allocation
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89
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90 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, constantPoolOopDesc* pool, int index))
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91 klassOop k_oop = pool->klass_at(index, CHECK);
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92 instanceKlassHandle klass (THREAD, k_oop);
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93
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94 // Make sure we are not instantiating an abstract klass
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95 klass->check_valid_for_instantiation(true, CHECK);
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96
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97 // Make sure klass is initialized
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98 klass->initialize(CHECK);
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99
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100 // At this point the class may not be fully initialized
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101 // because of recursive initialization. If it is fully
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102 // initialized & has_finalized is not set, we rewrite
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103 // it into its fast version (Note: no locking is needed
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104 // here since this is an atomic byte write and can be
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105 // done more than once).
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106 //
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107 // Note: In case of classes with has_finalized we don't
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108 // rewrite since that saves us an extra check in
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109 // the fast version which then would call the
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110 // slow version anyway (and do a call back into
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111 // Java).
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112 // If we have a breakpoint, then we don't rewrite
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113 // because the _breakpoint bytecode would be lost.
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114 oop obj = klass->allocate_instance(CHECK);
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115 thread->set_vm_result(obj);
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116 IRT_END
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117
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118
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119 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size))
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120 oop obj = oopFactory::new_typeArray(type, size, CHECK);
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121 thread->set_vm_result(obj);
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122 IRT_END
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123
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124
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125 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, constantPoolOopDesc* pool, int index, jint size))
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126 // Note: no oopHandle for pool & klass needed since they are not used
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127 // anymore after new_objArray() and no GC can happen before.
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128 // (This may have to change if this code changes!)
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129 klassOop klass = pool->klass_at(index, CHECK);
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130 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);
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131 thread->set_vm_result(obj);
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132 IRT_END
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133
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134
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135 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address))
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136 // We may want to pass in more arguments - could make this slightly faster
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137 constantPoolOop constants = method(thread)->constants();
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138 int i = two_byte_index(thread);
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139 klassOop klass = constants->klass_at(i, CHECK);
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140 int nof_dims = number_of_dimensions(thread);
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141 assert(oop(klass)->is_klass(), "not a class");
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142 assert(nof_dims >= 1, "multianewarray rank must be nonzero");
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143
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144 // We must create an array of jints to pass to multi_allocate.
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145 ResourceMark rm(thread);
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146 const int small_dims = 10;
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147 jint dim_array[small_dims];
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148 jint *dims = &dim_array[0];
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149 if (nof_dims > small_dims) {
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150 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims);
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151 }
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152 for (int index = 0; index < nof_dims; index++) {
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153 // offset from first_size_address is addressed as local[index]
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154 int n = Interpreter::local_offset_in_bytes(index)/jintSize;
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155 dims[index] = first_size_address[n];
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156 }
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157 oop obj = arrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK);
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158 thread->set_vm_result(obj);
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159 IRT_END
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160
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161
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162 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj))
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163 assert(obj->is_oop(), "must be a valid oop");
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164 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");
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165 instanceKlass::register_finalizer(instanceOop(obj), CHECK);
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166 IRT_END
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167
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168
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169 // Quicken instance-of and check-cast bytecodes
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170 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread))
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171 // Force resolving; quicken the bytecode
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172 int which = two_byte_index(thread);
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173 constantPoolOop cpool = method(thread)->constants();
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174 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded
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175 // program we might have seen an unquick'd bytecode in the interpreter but have another
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176 // thread quicken the bytecode before we get here.
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177 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" );
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178 klassOop klass = cpool->klass_at(which, CHECK);
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179 thread->set_vm_result(klass);
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180 IRT_END
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181
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182
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183 //------------------------------------------------------------------------------------------------------------------------
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184 // Exceptions
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185
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186 // Assume the compiler is (or will be) interested in this event.
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187 // If necessary, create an MDO to hold the information, and record it.
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188 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) {
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189 assert(ProfileTraps, "call me only if profiling");
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190 methodHandle trap_method(thread, method(thread));
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191 if (trap_method.not_null()) {
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192 methodDataHandle trap_mdo(thread, trap_method->method_data());
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193 if (trap_mdo.is_null()) {
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194 methodOopDesc::build_interpreter_method_data(trap_method, THREAD);
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195 if (HAS_PENDING_EXCEPTION) {
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196 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");
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197 CLEAR_PENDING_EXCEPTION;
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198 }
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199 trap_mdo = methodDataHandle(thread, trap_method->method_data());
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200 // and fall through...
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201 }
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202 if (trap_mdo.not_null()) {
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203 // Update per-method count of trap events. The interpreter
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204 // is updating the MDO to simulate the effect of compiler traps.
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205 int trap_bci = trap_method->bci_from(bcp(thread));
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206 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason);
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207 }
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208 }
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209 }
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210
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211 static Handle get_preinitialized_exception(klassOop k, TRAPS) {
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212 // get klass
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213 instanceKlass* klass = instanceKlass::cast(k);
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214 assert(klass->is_initialized(),
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215 "this klass should have been initialized during VM initialization");
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216 // create instance - do not call constructor since we may have no
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217 // (java) stack space left (should assert constructor is empty)
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218 Handle exception;
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219 oop exception_oop = klass->allocate_instance(CHECK_(exception));
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220 exception = Handle(THREAD, exception_oop);
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221 if (StackTraceInThrowable) {
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222 java_lang_Throwable::fill_in_stack_trace(exception);
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223 }
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224 return exception;
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225 }
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226
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227 // Special handling for stack overflow: since we don't have any (java) stack
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228 // space left we use the pre-allocated & pre-initialized StackOverflowError
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229 // klass to create an stack overflow error instance. We do not call its
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230 // constructor for the same reason (it is empty, anyway).
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231 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread))
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232 Handle exception = get_preinitialized_exception(
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233 SystemDictionary::StackOverflowError_klass(),
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234 CHECK);
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235 THROW_HANDLE(exception);
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236 IRT_END
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237
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238
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239 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message))
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240 // lookup exception klass
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241 symbolHandle s = oopFactory::new_symbol_handle(name, CHECK);
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242 if (ProfileTraps) {
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243 if (s == vmSymbols::java_lang_ArithmeticException()) {
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244 note_trap(thread, Deoptimization::Reason_div0_check, CHECK);
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245 } else if (s == vmSymbols::java_lang_NullPointerException()) {
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246 note_trap(thread, Deoptimization::Reason_null_check, CHECK);
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247 }
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248 }
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249 // create exception
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250 Handle exception = Exceptions::new_exception(thread, s(), message);
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251 thread->set_vm_result(exception());
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252 IRT_END
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253
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254
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255 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj))
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256 ResourceMark rm(thread);
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257 const char* klass_name = Klass::cast(obj->klass())->external_name();
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258 // lookup exception klass
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259 symbolHandle s = oopFactory::new_symbol_handle(name, CHECK);
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260 if (ProfileTraps) {
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261 note_trap(thread, Deoptimization::Reason_class_check, CHECK);
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262 }
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263 // create exception, with klass name as detail message
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264 Handle exception = Exceptions::new_exception(thread, s(), klass_name);
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265 thread->set_vm_result(exception());
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266 IRT_END
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267
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268
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269 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index))
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270 char message[jintAsStringSize];
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271 // lookup exception klass
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272 symbolHandle s = oopFactory::new_symbol_handle(name, CHECK);
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273 if (ProfileTraps) {
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274 note_trap(thread, Deoptimization::Reason_range_check, CHECK);
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275 }
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276 // create exception
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277 sprintf(message, "%d", index);
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278 THROW_MSG(s(), message);
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279 IRT_END
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280
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281 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException(
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282 JavaThread* thread, oopDesc* obj))
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283
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284 ResourceMark rm(thread);
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285 char* message = SharedRuntime::generate_class_cast_message(
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286 thread, Klass::cast(obj->klass())->external_name());
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287
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288 if (ProfileTraps) {
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289 note_trap(thread, Deoptimization::Reason_class_check, CHECK);
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290 }
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291
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292 // create exception
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293 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);
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294 IRT_END
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295
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296
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297 // exception_handler_for_exception(...) returns the continuation address,
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298 // the exception oop (via TLS) and sets the bci/bcp for the continuation.
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299 // The exception oop is returned to make sure it is preserved over GC (it
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300 // is only on the stack if the exception was thrown explicitly via athrow).
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301 // During this operation, the expression stack contains the values for the
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302 // bci where the exception happened. If the exception was propagated back
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303 // from a call, the expression stack contains the values for the bci at the
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304 // invoke w/o arguments (i.e., as if one were inside the call).
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305 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception))
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306
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307 Handle h_exception(thread, exception);
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308 methodHandle h_method (thread, method(thread));
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309 constantPoolHandle h_constants(thread, h_method->constants());
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310 typeArrayHandle h_extable (thread, h_method->exception_table());
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311 bool should_repeat;
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312 int handler_bci;
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313 int current_bci = bcp(thread) - h_method->code_base();
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314
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315 // Need to do this check first since when _do_not_unlock_if_synchronized
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316 // is set, we don't want to trigger any classloading which may make calls
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317 // into java, or surprisingly find a matching exception handler for bci 0
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318 // since at this moment the method hasn't been "officially" entered yet.
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319 if (thread->do_not_unlock_if_synchronized()) {
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320 ResourceMark rm;
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321 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized");
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322 thread->set_vm_result(exception);
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323 #ifdef CC_INTERP
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324 return (address) -1;
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325 #else
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326 return Interpreter::remove_activation_entry();
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327 #endif
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328 }
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329
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330 do {
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331 should_repeat = false;
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332
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333 // assertions
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334 #ifdef ASSERT
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335 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow");
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336 assert(h_exception->is_oop(), "just checking");
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337 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError
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338 if (!(h_exception->is_a(SystemDictionary::throwable_klass()))) {
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339 if (ExitVMOnVerifyError) vm_exit(-1);
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340 ShouldNotReachHere();
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341 }
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342 #endif
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343
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344 // tracing
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345 if (TraceExceptions) {
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346 ttyLocker ttyl;
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347 ResourceMark rm(thread);
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348 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception());
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349 tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string());
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350 tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread);
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351 }
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352 // Don't go paging in something which won't be used.
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353 // else if (h_extable->length() == 0) {
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354 // // disabled for now - interpreter is not using shortcut yet
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355 // // (shortcut is not to call runtime if we have no exception handlers)
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356 // // warning("performance bug: should not call runtime if method has no exception handlers");
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357 // }
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358 // for AbortVMOnException flag
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359 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception));
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360
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361 // exception handler lookup
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362 KlassHandle h_klass(THREAD, h_exception->klass());
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363 handler_bci = h_method->fast_exception_handler_bci_for(h_klass, current_bci, THREAD);
|
|
|
364 if (HAS_PENDING_EXCEPTION) {
|
|
|
365 // We threw an exception while trying to find the exception handler.
|
|
|
366 // Transfer the new exception to the exception handle which will
|
|
|
367 // be set into thread local storage, and do another lookup for an
|
|
|
368 // exception handler for this exception, this time starting at the
|
|
|
369 // BCI of the exception handler which caused the exception to be
|
|
|
370 // thrown (bug 4307310).
|
|
|
371 h_exception = Handle(THREAD, PENDING_EXCEPTION);
|
|
|
372 CLEAR_PENDING_EXCEPTION;
|
|
|
373 if (handler_bci >= 0) {
|
|
|
374 current_bci = handler_bci;
|
|
|
375 should_repeat = true;
|
|
|
376 }
|
|
|
377 }
|
|
|
378 } while (should_repeat == true);
|
|
|
379
|
|
|
380 // notify JVMTI of an exception throw; JVMTI will detect if this is a first
|
|
|
381 // time throw or a stack unwinding throw and accordingly notify the debugger
|
|
|
382 if (JvmtiExport::can_post_exceptions()) {
|
|
|
383 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception());
|
|
|
384 }
|
|
|
385
|
|
|
386 #ifdef CC_INTERP
|
|
|
387 address continuation = (address)(intptr_t) handler_bci;
|
|
|
388 #else
|
|
|
389 address continuation = NULL;
|
|
|
390 #endif
|
|
|
391 address handler_pc = NULL;
|
|
|
392 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) {
|
|
|
393 // Forward exception to callee (leaving bci/bcp untouched) because (a) no
|
|
|
394 // handler in this method, or (b) after a stack overflow there is not yet
|
|
|
395 // enough stack space available to reprotect the stack.
|
|
|
396 #ifndef CC_INTERP
|
|
|
397 continuation = Interpreter::remove_activation_entry();
|
|
|
398 #endif
|
|
|
399 // Count this for compilation purposes
|
|
|
400 h_method->interpreter_throwout_increment();
|
|
|
401 } else {
|
|
|
402 // handler in this method => change bci/bcp to handler bci/bcp and continue there
|
|
|
403 handler_pc = h_method->code_base() + handler_bci;
|
|
|
404 #ifndef CC_INTERP
|
|
|
405 set_bcp_and_mdp(handler_pc, thread);
|
|
|
406 continuation = Interpreter::dispatch_table(vtos)[*handler_pc];
|
|
|
407 #endif
|
|
|
408 }
|
|
|
409 // notify debugger of an exception catch
|
|
|
410 // (this is good for exceptions caught in native methods as well)
|
|
|
411 if (JvmtiExport::can_post_exceptions()) {
|
|
|
412 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL));
|
|
|
413 }
|
|
|
414
|
|
|
415 thread->set_vm_result(h_exception());
|
|
|
416 return continuation;
|
|
|
417 IRT_END
|
|
|
418
|
|
|
419
|
|
|
420 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread))
|
|
|
421 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending");
|
|
|
422 // nothing to do - eventually we should remove this code entirely (see comments @ call sites)
|
|
|
423 IRT_END
|
|
|
424
|
|
|
425
|
|
|
426 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread))
|
|
|
427 THROW(vmSymbols::java_lang_AbstractMethodError());
|
|
|
428 IRT_END
|
|
|
429
|
|
|
430
|
|
|
431 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread))
|
|
|
432 THROW(vmSymbols::java_lang_IncompatibleClassChangeError());
|
|
|
433 IRT_END
|
|
|
434
|
|
|
435
|
|
|
436 //------------------------------------------------------------------------------------------------------------------------
|
|
|
437 // Fields
|
|
|
438 //
|
|
|
439
|
|
|
440 IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode))
|
|
|
441 // resolve field
|
|
|
442 FieldAccessInfo info;
|
|
|
443 constantPoolHandle pool(thread, method(thread)->constants());
|
|
|
444 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic);
|
|
|
445
|
|
|
446 {
|
|
|
447 JvmtiHideSingleStepping jhss(thread);
|
|
|
448 LinkResolver::resolve_field(info, pool, two_byte_index(thread),
|
|
|
449 bytecode, false, CHECK);
|
|
|
450 } // end JvmtiHideSingleStepping
|
|
|
451
|
|
|
452 // check if link resolution caused cpCache to be updated
|
|
|
453 if (already_resolved(thread)) return;
|
|
|
454
|
|
|
455 // compute auxiliary field attributes
|
|
|
456 TosState state = as_TosState(info.field_type());
|
|
|
457
|
|
|
458 // We need to delay resolving put instructions on final fields
|
|
|
459 // until we actually invoke one. This is required so we throw
|
|
|
460 // exceptions at the correct place. If we do not resolve completely
|
|
|
461 // in the current pass, leaving the put_code set to zero will
|
|
|
462 // cause the next put instruction to reresolve.
|
|
|
463 bool is_put = (bytecode == Bytecodes::_putfield ||
|
|
|
464 bytecode == Bytecodes::_putstatic);
|
|
|
465 Bytecodes::Code put_code = (Bytecodes::Code)0;
|
|
|
466
|
|
|
467 // We also need to delay resolving getstatic instructions until the
|
|
|
468 // class is intitialized. This is required so that access to the static
|
|
|
469 // field will call the initialization function every time until the class
|
|
|
470 // is completely initialized ala. in 2.17.5 in JVM Specification.
|
|
|
471 instanceKlass *klass = instanceKlass::cast(info.klass()->as_klassOop());
|
|
|
472 bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) &&
|
|
|
473 !klass->is_initialized());
|
|
|
474 Bytecodes::Code get_code = (Bytecodes::Code)0;
|
|
|
475
|
|
|
476
|
|
|
477 if (!uninitialized_static) {
|
|
|
478 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield);
|
|
|
479 if (is_put || !info.access_flags().is_final()) {
|
|
|
480 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield);
|
|
|
481 }
|
|
|
482 }
|
|
|
483
|
|
|
484 cache_entry(thread)->set_field(
|
|
|
485 get_code,
|
|
|
486 put_code,
|
|
|
487 info.klass(),
|
|
|
488 info.field_index(),
|
|
|
489 info.field_offset(),
|
|
|
490 state,
|
|
|
491 info.access_flags().is_final(),
|
|
|
492 info.access_flags().is_volatile()
|
|
|
493 );
|
|
|
494 IRT_END
|
|
|
495
|
|
|
496
|
|
|
497 //------------------------------------------------------------------------------------------------------------------------
|
|
|
498 // Synchronization
|
|
|
499 //
|
|
|
500 // The interpreter's synchronization code is factored out so that it can
|
|
|
501 // be shared by method invocation and synchronized blocks.
|
|
|
502 //%note synchronization_3
|
|
|
503
|
|
|
504 static void trace_locking(Handle& h_locking_obj, bool is_locking) {
|
|
|
505 ObjectSynchronizer::trace_locking(h_locking_obj, false, true, is_locking);
|
|
|
506 }
|
|
|
507
|
|
|
508
|
|
|
509 //%note monitor_1
|
|
|
510 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem))
|
|
|
511 #ifdef ASSERT
|
|
|
512 thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
|
513 #endif
|
|
|
514 if (PrintBiasedLockingStatistics) {
|
|
|
515 Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
|
|
|
516 }
|
|
|
517 Handle h_obj(thread, elem->obj());
|
|
|
518 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
|
|
|
519 "must be NULL or an object");
|
|
|
520 if (UseBiasedLocking) {
|
|
|
521 // Retry fast entry if bias is revoked to avoid unnecessary inflation
|
|
|
522 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK);
|
|
|
523 } else {
|
|
|
524 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK);
|
|
|
525 }
|
|
|
526 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()),
|
|
|
527 "must be NULL or an object");
|
|
|
528 #ifdef ASSERT
|
|
|
529 thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
|
530 #endif
|
|
|
531 IRT_END
|
|
|
532
|
|
|
533
|
|
|
534 //%note monitor_1
|
|
|
535 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem))
|
|
|
536 #ifdef ASSERT
|
|
|
537 thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
|
538 #endif
|
|
|
539 Handle h_obj(thread, elem->obj());
|
|
|
540 assert(Universe::heap()->is_in_reserved_or_null(h_obj()),
|
|
|
541 "must be NULL or an object");
|
|
|
542 if (elem == NULL || h_obj()->is_unlocked()) {
|
|
|
543 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
|
|
|
544 }
|
|
|
545 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread);
|
|
|
546 // Free entry. This must be done here, since a pending exception might be installed on
|
|
|
547 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again.
|
|
|
548 elem->set_obj(NULL);
|
|
|
549 #ifdef ASSERT
|
|
|
550 thread->last_frame().interpreter_frame_verify_monitor(elem);
|
|
|
551 #endif
|
|
|
552 IRT_END
|
|
|
553
|
|
|
554
|
|
|
555 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread))
|
|
|
556 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
|
|
|
557 IRT_END
|
|
|
558
|
|
|
559
|
|
|
560 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread))
|
|
|
561 // Returns an illegal exception to install into the current thread. The
|
|
|
562 // pending_exception flag is cleared so normal exception handling does not
|
|
|
563 // trigger. Any current installed exception will be overwritten. This
|
|
|
564 // method will be called during an exception unwind.
|
|
|
565
|
|
|
566 assert(!HAS_PENDING_EXCEPTION, "no pending exception");
|
|
|
567 Handle exception(thread, thread->vm_result());
|
|
|
568 assert(exception() != NULL, "vm result should be set");
|
|
|
569 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures)
|
|
|
570 if (!exception->is_a(SystemDictionary::threaddeath_klass())) {
|
|
|
571 exception = get_preinitialized_exception(
|
|
|
572 SystemDictionary::IllegalMonitorStateException_klass(),
|
|
|
573 CATCH);
|
|
|
574 }
|
|
|
575 thread->set_vm_result(exception());
|
|
|
576 IRT_END
|
|
|
577
|
|
|
578
|
|
|
579 //------------------------------------------------------------------------------------------------------------------------
|
|
|
580 // Invokes
|
|
|
581
|
|
|
582 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp))
|
|
|
583 return method->orig_bytecode_at(method->bci_from(bcp));
|
|
|
584 IRT_END
|
|
|
585
|
|
|
586 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code))
|
|
|
587 method->set_orig_bytecode_at(method->bci_from(bcp), new_code);
|
|
|
588 IRT_END
|
|
|
589
|
|
|
590 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, methodOopDesc* method, address bcp))
|
|
|
591 JvmtiExport::post_raw_breakpoint(thread, method, bcp);
|
|
|
592 IRT_END
|
|
|
593
|
|
|
594 IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode))
|
|
|
595 // extract receiver from the outgoing argument list if necessary
|
|
|
596 Handle receiver(thread, NULL);
|
|
|
597 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) {
|
|
|
598 ResourceMark rm(thread);
|
|
|
599 methodHandle m (thread, method(thread));
|
|
|
600 int bci = m->bci_from(bcp(thread));
|
|
|
601 Bytecode_invoke* call = Bytecode_invoke_at(m, bci);
|
|
|
602 symbolHandle signature (thread, call->signature());
|
|
|
603 receiver = Handle(thread,
|
|
|
604 thread->last_frame().interpreter_callee_receiver(signature));
|
|
|
605 assert(Universe::heap()->is_in_reserved_or_null(receiver()),
|
|
|
606 "sanity check");
|
|
|
607 assert(receiver.is_null() ||
|
|
|
608 Universe::heap()->is_in_reserved(receiver->klass()),
|
|
|
609 "sanity check");
|
|
|
610 }
|
|
|
611
|
|
|
612 // resolve method
|
|
|
613 CallInfo info;
|
|
|
614 constantPoolHandle pool(thread, method(thread)->constants());
|
|
|
615
|
|
|
616 {
|
|
|
617 JvmtiHideSingleStepping jhss(thread);
|
|
|
618 LinkResolver::resolve_invoke(info, receiver, pool,
|
|
|
619 two_byte_index(thread), bytecode, CHECK);
|
|
|
620 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
|
|
|
621 int retry_count = 0;
|
|
|
622 while (info.resolved_method()->is_old()) {
|
|
|
623 // It is very unlikely that method is redefined more than 100 times
|
|
|
624 // in the middle of resolve. If it is looping here more than 100 times
|
|
|
625 // means then there could be a bug here.
|
|
|
626 guarantee((retry_count++ < 100),
|
|
|
627 "Could not resolve to latest version of redefined method");
|
|
|
628 // method is redefined in the middle of resolve so re-try.
|
|
|
629 LinkResolver::resolve_invoke(info, receiver, pool,
|
|
|
630 two_byte_index(thread), bytecode, CHECK);
|
|
|
631 }
|
|
|
632 }
|
|
|
633 } // end JvmtiHideSingleStepping
|
|
|
634
|
|
|
635 // check if link resolution caused cpCache to be updated
|
|
|
636 if (already_resolved(thread)) return;
|
|
|
637
|
|
|
638 if (bytecode == Bytecodes::_invokeinterface) {
|
|
|
639
|
|
|
640 if (TraceItables && Verbose) {
|
|
|
641 ResourceMark rm(thread);
|
|
|
642 tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string());
|
|
|
643 }
|
|
|
644 if (info.resolved_method()->method_holder() ==
|
|
|
645 SystemDictionary::object_klass()) {
|
|
|
646 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec
|
|
|
647 // (see also cpCacheOop.cpp for details)
|
|
|
648 methodHandle rm = info.resolved_method();
|
|
|
649 assert(rm->is_final() || info.has_vtable_index(),
|
|
|
650 "should have been set already");
|
|
|
651 cache_entry(thread)->set_method(bytecode, rm, info.vtable_index());
|
|
|
652 } else {
|
|
|
653 // Setup itable entry
|
|
|
654 int index = klassItable::compute_itable_index(info.resolved_method()());
|
|
|
655 cache_entry(thread)->set_interface_call(info.resolved_method(), index);
|
|
|
656 }
|
|
|
657 } else {
|
|
|
658 cache_entry(thread)->set_method(
|
|
|
659 bytecode,
|
|
|
660 info.resolved_method(),
|
|
|
661 info.vtable_index());
|
|
|
662 }
|
|
|
663 IRT_END
|
|
|
664
|
|
|
665
|
|
|
666 //------------------------------------------------------------------------------------------------------------------------
|
|
|
667 // Miscellaneous
|
|
|
668
|
|
|
669
|
|
|
670 #ifndef PRODUCT
|
|
|
671 static void trace_frequency_counter_overflow(methodHandle m, int branch_bci, int bci, address branch_bcp) {
|
|
|
672 if (TraceInvocationCounterOverflow) {
|
|
|
673 InvocationCounter* ic = m->invocation_counter();
|
|
|
674 InvocationCounter* bc = m->backedge_counter();
|
|
|
675 ResourceMark rm;
|
|
|
676 const char* msg =
|
|
|
677 branch_bcp == NULL
|
|
|
678 ? "comp-policy cntr ovfl @ %d in entry of "
|
|
|
679 : "comp-policy cntr ovfl @ %d in loop of ";
|
|
|
680 tty->print(msg, bci);
|
|
|
681 m->print_value();
|
|
|
682 tty->cr();
|
|
|
683 ic->print();
|
|
|
684 bc->print();
|
|
|
685 if (ProfileInterpreter) {
|
|
|
686 if (branch_bcp != NULL) {
|
|
|
687 methodDataOop mdo = m->method_data();
|
|
|
688 if (mdo != NULL) {
|
|
|
689 int count = mdo->bci_to_data(branch_bci)->as_JumpData()->taken();
|
|
|
690 tty->print_cr("back branch count = %d", count);
|
|
|
691 }
|
|
|
692 }
|
|
|
693 }
|
|
|
694 }
|
|
|
695 }
|
|
|
696
|
|
|
697 static void trace_osr_request(methodHandle method, nmethod* osr, int bci) {
|
|
|
698 if (TraceOnStackReplacement) {
|
|
|
699 ResourceMark rm;
|
|
|
700 tty->print(osr != NULL ? "Reused OSR entry for " : "Requesting OSR entry for ");
|
|
|
701 method->print_short_name(tty);
|
|
|
702 tty->print_cr(" at bci %d", bci);
|
|
|
703 }
|
|
|
704 }
|
|
|
705 #endif // !PRODUCT
|
|
|
706
|
|
|
707 IRT_ENTRY(nmethod*,
|
|
|
708 InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp))
|
|
|
709 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
|
|
|
710 // flag, in case this method triggers classloading which will call into Java.
|
|
|
711 UnlockFlagSaver fs(thread);
|
|
|
712
|
|
|
713 frame fr = thread->last_frame();
|
|
|
714 assert(fr.is_interpreted_frame(), "must come from interpreter");
|
|
|
715 methodHandle method(thread, fr.interpreter_frame_method());
|
|
|
716 const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : 0;
|
|
|
717 const int bci = method->bci_from(fr.interpreter_frame_bcp());
|
|
|
718 NOT_PRODUCT(trace_frequency_counter_overflow(method, branch_bci, bci, branch_bcp);)
|
|
|
719
|
|
|
720 if (JvmtiExport::can_post_interpreter_events()) {
|
|
|
721 if (thread->is_interp_only_mode()) {
|
|
|
722 // If certain JVMTI events (e.g. frame pop event) are requested then the
|
|
|
723 // thread is forced to remain in interpreted code. This is
|
|
|
724 // implemented partly by a check in the run_compiled_code
|
|
|
725 // section of the interpreter whether we should skip running
|
|
|
726 // compiled code, and partly by skipping OSR compiles for
|
|
|
727 // interpreted-only threads.
|
|
|
728 if (branch_bcp != NULL) {
|
|
|
729 CompilationPolicy::policy()->reset_counter_for_back_branch_event(method);
|
|
|
730 return NULL;
|
|
|
731 }
|
|
|
732 }
|
|
|
733 }
|
|
|
734
|
|
|
735 if (branch_bcp == NULL) {
|
|
|
736 // when code cache is full, compilation gets switched off, UseCompiler
|
|
|
737 // is set to false
|
|
|
738 if (!method->has_compiled_code() && UseCompiler) {
|
|
|
739 CompilationPolicy::policy()->method_invocation_event(method, CHECK_NULL);
|
|
|
740 } else {
|
|
|
741 // Force counter overflow on method entry, even if no compilation
|
|
|
742 // happened. (The method_invocation_event call does this also.)
|
|
|
743 CompilationPolicy::policy()->reset_counter_for_invocation_event(method);
|
|
|
744 }
|
|
|
745 // compilation at an invocation overflow no longer goes and retries test for
|
|
|
746 // compiled method. We always run the loser of the race as interpreted.
|
|
|
747 // so return NULL
|
|
|
748 return NULL;
|
|
|
749 } else {
|
|
|
750 // counter overflow in a loop => try to do on-stack-replacement
|
|
|
751 nmethod* osr_nm = method->lookup_osr_nmethod_for(bci);
|
|
|
752 NOT_PRODUCT(trace_osr_request(method, osr_nm, bci);)
|
|
|
753 // when code cache is full, we should not compile any more...
|
|
|
754 if (osr_nm == NULL && UseCompiler) {
|
|
|
755 const int branch_bci = method->bci_from(branch_bcp);
|
|
|
756 CompilationPolicy::policy()->method_back_branch_event(method, branch_bci, bci, CHECK_NULL);
|
|
|
757 osr_nm = method->lookup_osr_nmethod_for(bci);
|
|
|
758 }
|
|
|
759 if (osr_nm == NULL) {
|
|
|
760 CompilationPolicy::policy()->reset_counter_for_back_branch_event(method);
|
|
|
761 return NULL;
|
|
|
762 } else {
|
|
|
763 // We may need to do on-stack replacement which requires that no
|
|
|
764 // monitors in the activation are biased because their
|
|
|
765 // BasicObjectLocks will need to migrate during OSR. Force
|
|
|
766 // unbiasing of all monitors in the activation now (even though
|
|
|
767 // the OSR nmethod might be invalidated) because we don't have a
|
|
|
768 // safepoint opportunity later once the migration begins.
|
|
|
769 if (UseBiasedLocking) {
|
|
|
770 ResourceMark rm;
|
|
|
771 GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>();
|
|
|
772 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end();
|
|
|
773 kptr < fr.interpreter_frame_monitor_begin();
|
|
|
774 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) {
|
|
|
775 if( kptr->obj() != NULL ) {
|
|
|
776 objects_to_revoke->append(Handle(THREAD, kptr->obj()));
|
|
|
777 }
|
|
|
778 }
|
|
|
779 BiasedLocking::revoke(objects_to_revoke);
|
|
|
780 }
|
|
|
781
|
|
|
782 return osr_nm;
|
|
|
783 }
|
|
|
784 }
|
|
|
785 IRT_END
|
|
|
786
|
|
|
787 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(methodOopDesc* method, address cur_bcp))
|
|
|
788 assert(ProfileInterpreter, "must be profiling interpreter");
|
|
|
789 int bci = method->bci_from(cur_bcp);
|
|
|
790 methodDataOop mdo = method->method_data();
|
|
|
791 if (mdo == NULL) return 0;
|
|
|
792 return mdo->bci_to_di(bci);
|
|
|
793 IRT_END
|
|
|
794
|
|
|
795 IRT_ENTRY(jint, InterpreterRuntime::profile_method(JavaThread* thread, address cur_bcp))
|
|
|
796 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
|
|
|
797 // flag, in case this method triggers classloading which will call into Java.
|
|
|
798 UnlockFlagSaver fs(thread);
|
|
|
799
|
|
|
800 assert(ProfileInterpreter, "must be profiling interpreter");
|
|
|
801 frame fr = thread->last_frame();
|
|
|
802 assert(fr.is_interpreted_frame(), "must come from interpreter");
|
|
|
803 methodHandle method(thread, fr.interpreter_frame_method());
|
|
|
804 int bci = method->bci_from(cur_bcp);
|
|
|
805 methodOopDesc::build_interpreter_method_data(method, THREAD);
|
|
|
806 if (HAS_PENDING_EXCEPTION) {
|
|
|
807 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");
|
|
|
808 CLEAR_PENDING_EXCEPTION;
|
|
|
809 // and fall through...
|
|
|
810 }
|
|
|
811 methodDataOop mdo = method->method_data();
|
|
|
812 if (mdo == NULL) return 0;
|
|
|
813 return mdo->bci_to_di(bci);
|
|
|
814 IRT_END
|
|
|
815
|
|
|
816
|
|
|
817 #ifdef ASSERT
|
|
|
818 IRT_LEAF(void, InterpreterRuntime::verify_mdp(methodOopDesc* method, address bcp, address mdp))
|
|
|
819 assert(ProfileInterpreter, "must be profiling interpreter");
|
|
|
820
|
|
|
821 methodDataOop mdo = method->method_data();
|
|
|
822 assert(mdo != NULL, "must not be null");
|
|
|
823
|
|
|
824 int bci = method->bci_from(bcp);
|
|
|
825
|
|
|
826 address mdp2 = mdo->bci_to_dp(bci);
|
|
|
827 if (mdp != mdp2) {
|
|
|
828 ResourceMark rm;
|
|
|
829 ResetNoHandleMark rnm; // In a LEAF entry.
|
|
|
830 HandleMark hm;
|
|
|
831 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci);
|
|
|
832 int current_di = mdo->dp_to_di(mdp);
|
|
|
833 int expected_di = mdo->dp_to_di(mdp2);
|
|
|
834 tty->print_cr(" actual di %d expected di %d", current_di, expected_di);
|
|
|
835 int expected_approx_bci = mdo->data_at(expected_di)->bci();
|
|
|
836 int approx_bci = -1;
|
|
|
837 if (current_di >= 0) {
|
|
|
838 approx_bci = mdo->data_at(current_di)->bci();
|
|
|
839 }
|
|
|
840 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci);
|
|
|
841 mdo->print_on(tty);
|
|
|
842 method->print_codes();
|
|
|
843 }
|
|
|
844 assert(mdp == mdp2, "wrong mdp");
|
|
|
845 IRT_END
|
|
|
846 #endif // ASSERT
|
|
|
847
|
|
|
848 IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci))
|
|
|
849 assert(ProfileInterpreter, "must be profiling interpreter");
|
|
|
850 ResourceMark rm(thread);
|
|
|
851 HandleMark hm(thread);
|
|
|
852 frame fr = thread->last_frame();
|
|
|
853 assert(fr.is_interpreted_frame(), "must come from interpreter");
|
|
|
854 methodDataHandle h_mdo(thread, fr.interpreter_frame_method()->method_data());
|
|
|
855
|
|
|
856 // Grab a lock to ensure atomic access to setting the return bci and
|
|
|
857 // the displacement. This can block and GC, invalidating all naked oops.
|
|
|
858 MutexLocker ml(RetData_lock);
|
|
|
859
|
|
|
860 // ProfileData is essentially a wrapper around a derived oop, so we
|
|
|
861 // need to take the lock before making any ProfileData structures.
|
|
|
862 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp()));
|
|
|
863 RetData* rdata = data->as_RetData();
|
|
|
864 address new_mdp = rdata->fixup_ret(return_bci, h_mdo);
|
|
|
865 fr.interpreter_frame_set_mdp(new_mdp);
|
|
|
866 IRT_END
|
|
|
867
|
|
|
868
|
|
|
869 IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread))
|
|
|
870 // We used to need an explict preserve_arguments here for invoke bytecodes. However,
|
|
|
871 // stack traversal automatically takes care of preserving arguments for invoke, so
|
|
|
872 // this is no longer needed.
|
|
|
873
|
|
|
874 // IRT_END does an implicit safepoint check, hence we are guaranteed to block
|
|
|
875 // if this is called during a safepoint
|
|
|
876
|
|
|
877 if (JvmtiExport::should_post_single_step()) {
|
|
|
878 // We are called during regular safepoints and when the VM is
|
|
|
879 // single stepping. If any thread is marked for single stepping,
|
|
|
880 // then we may have JVMTI work to do.
|
|
|
881 JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread));
|
|
|
882 }
|
|
|
883 IRT_END
|
|
|
884
|
|
|
885 IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj,
|
|
|
886 ConstantPoolCacheEntry *cp_entry))
|
|
|
887
|
|
|
888 // check the access_flags for the field in the klass
|
|
|
889 instanceKlass* ik = instanceKlass::cast((klassOop)cp_entry->f1());
|
|
|
890 typeArrayOop fields = ik->fields();
|
|
|
891 int index = cp_entry->field_index();
|
|
|
892 assert(index < fields->length(), "holders field index is out of range");
|
|
|
893 // bail out if field accesses are not watched
|
|
|
894 if ((fields->ushort_at(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return;
|
|
|
895
|
|
|
896 switch(cp_entry->flag_state()) {
|
|
|
897 case btos: // fall through
|
|
|
898 case ctos: // fall through
|
|
|
899 case stos: // fall through
|
|
|
900 case itos: // fall through
|
|
|
901 case ftos: // fall through
|
|
|
902 case ltos: // fall through
|
|
|
903 case dtos: // fall through
|
|
|
904 case atos: break;
|
|
|
905 default: ShouldNotReachHere(); return;
|
|
|
906 }
|
|
|
907 bool is_static = (obj == NULL);
|
|
|
908 HandleMark hm(thread);
|
|
|
909
|
|
|
910 Handle h_obj;
|
|
|
911 if (!is_static) {
|
|
|
912 // non-static field accessors have an object, but we need a handle
|
|
|
913 h_obj = Handle(thread, obj);
|
|
|
914 }
|
|
|
915 instanceKlassHandle h_cp_entry_f1(thread, (klassOop)cp_entry->f1());
|
|
|
916 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2(), is_static);
|
|
|
917 JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid);
|
|
|
918 IRT_END
|
|
|
919
|
|
|
920 IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread,
|
|
|
921 oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value))
|
|
|
922
|
|
|
923 klassOop k = (klassOop)cp_entry->f1();
|
|
|
924
|
|
|
925 // check the access_flags for the field in the klass
|
|
|
926 instanceKlass* ik = instanceKlass::cast(k);
|
|
|
927 typeArrayOop fields = ik->fields();
|
|
|
928 int index = cp_entry->field_index();
|
|
|
929 assert(index < fields->length(), "holders field index is out of range");
|
|
|
930 // bail out if field modifications are not watched
|
|
|
931 if ((fields->ushort_at(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return;
|
|
|
932
|
|
|
933 char sig_type = '\0';
|
|
|
934
|
|
|
935 switch(cp_entry->flag_state()) {
|
|
|
936 case btos: sig_type = 'Z'; break;
|
|
|
937 case ctos: sig_type = 'C'; break;
|
|
|
938 case stos: sig_type = 'S'; break;
|
|
|
939 case itos: sig_type = 'I'; break;
|
|
|
940 case ftos: sig_type = 'F'; break;
|
|
|
941 case atos: sig_type = 'L'; break;
|
|
|
942 case ltos: sig_type = 'J'; break;
|
|
|
943 case dtos: sig_type = 'D'; break;
|
|
|
944 default: ShouldNotReachHere(); return;
|
|
|
945 }
|
|
|
946 bool is_static = (obj == NULL);
|
|
|
947
|
|
|
948 HandleMark hm(thread);
|
|
|
949 instanceKlassHandle h_klass(thread, k);
|
|
|
950 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2(), is_static);
|
|
|
951 jvalue fvalue;
|
|
|
952 #ifdef _LP64
|
|
|
953 fvalue = *value;
|
|
|
954 #else
|
|
|
955 // Long/double values are stored unaligned and also noncontiguously with
|
|
|
956 // tagged stacks. We can't just do a simple assignment even in the non-
|
|
|
957 // J/D cases because a C++ compiler is allowed to assume that a jvalue is
|
|
|
958 // 8-byte aligned, and interpreter stack slots are only 4-byte aligned.
|
|
|
959 // We assume that the two halves of longs/doubles are stored in interpreter
|
|
|
960 // stack slots in platform-endian order.
|
|
|
961 jlong_accessor u;
|
|
|
962 jint* newval = (jint*)value;
|
|
|
963 u.words[0] = newval[0];
|
|
|
964 u.words[1] = newval[Interpreter::stackElementWords()]; // skip if tag
|
|
|
965 fvalue.j = u.long_value;
|
|
|
966 #endif // _LP64
|
|
|
967
|
|
|
968 Handle h_obj;
|
|
|
969 if (!is_static) {
|
|
|
970 // non-static field accessors have an object, but we need a handle
|
|
|
971 h_obj = Handle(thread, obj);
|
|
|
972 }
|
|
|
973
|
|
|
974 JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj,
|
|
|
975 fid, sig_type, &fvalue);
|
|
|
976 IRT_END
|
|
|
977
|
|
|
978 IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread))
|
|
|
979 JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));
|
|
|
980 IRT_END
|
|
|
981
|
|
|
982
|
|
|
983 IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread))
|
|
|
984 JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));
|
|
|
985 IRT_END
|
|
|
986
|
|
|
987 IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc))
|
|
|
988 {
|
|
|
989 return (Interpreter::contains(pc) ? 1 : 0);
|
|
|
990 }
|
|
|
991 IRT_END
|
|
|
992
|
|
|
993
|
|
|
994 // Implementation of SignatureHandlerLibrary
|
|
|
995
|
|
|
996 address SignatureHandlerLibrary::set_handler_blob() {
|
|
|
997 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size);
|
|
|
998 if (handler_blob == NULL) {
|
|
|
999 return NULL;
|
|
|
1000 }
|
|
|
1001 address handler = handler_blob->instructions_begin();
|
|
|
1002 _handler_blob = handler_blob;
|
|
|
1003 _handler = handler;
|
|
|
1004 return handler;
|
|
|
1005 }
|
|
|
1006
|
|
|
1007 void SignatureHandlerLibrary::initialize() {
|
|
|
1008 if (_fingerprints != NULL) {
|
|
|
1009 return;
|
|
|
1010 }
|
|
|
1011 if (set_handler_blob() == NULL) {
|
|
|
1012 vm_exit_out_of_memory(blob_size, "native signature handlers");
|
|
|
1013 }
|
|
|
1014
|
|
|
1015 BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer",
|
|
|
1016 SignatureHandlerLibrary::buffer_size);
|
|
|
1017 _buffer = bb->instructions_begin();
|
|
|
1018
|
|
|
1019 _fingerprints = new(ResourceObj::C_HEAP)GrowableArray<uint64_t>(32, true);
|
|
|
1020 _handlers = new(ResourceObj::C_HEAP)GrowableArray<address>(32, true);
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) {
|
|
|
1024 address handler = _handler;
|
|
|
1025 int code_size = buffer->pure_code_size();
|
|
|
1026 if (handler + code_size > _handler_blob->instructions_end()) {
|
|
|
1027 // get a new handler blob
|
|
|
1028 handler = set_handler_blob();
|
|
|
1029 }
|
|
|
1030 if (handler != NULL) {
|
|
|
1031 memcpy(handler, buffer->code_begin(), code_size);
|
|
|
1032 pd_set_handler(handler);
|
|
|
1033 ICache::invalidate_range(handler, code_size);
|
|
|
1034 _handler = handler + code_size;
|
|
|
1035 }
|
|
|
1036 return handler;
|
|
|
1037 }
|
|
|
1038
|
|
|
1039 void SignatureHandlerLibrary::add(methodHandle method) {
|
|
|
1040 if (method->signature_handler() == NULL) {
|
|
|
1041 // use slow signature handler if we can't do better
|
|
|
1042 int handler_index = -1;
|
|
|
1043 // check if we can use customized (fast) signature handler
|
|
|
1044 if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) {
|
|
|
1045 // use customized signature handler
|
|
|
1046 MutexLocker mu(SignatureHandlerLibrary_lock);
|
|
|
1047 // make sure data structure is initialized
|
|
|
1048 initialize();
|
|
|
1049 // lookup method signature's fingerprint
|
|
|
1050 uint64_t fingerprint = Fingerprinter(method).fingerprint();
|
|
|
1051 handler_index = _fingerprints->find(fingerprint);
|
|
|
1052 // create handler if necessary
|
|
|
1053 if (handler_index < 0) {
|
|
|
1054 ResourceMark rm;
|
|
|
1055 ptrdiff_t align_offset = (address)
|
|
|
1056 round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer;
|
|
|
1057 CodeBuffer buffer((address)(_buffer + align_offset),
|
|
|
1058 SignatureHandlerLibrary::buffer_size - align_offset);
|
|
|
1059 InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint);
|
|
|
1060 // copy into code heap
|
|
|
1061 address handler = set_handler(&buffer);
|
|
|
1062 if (handler == NULL) {
|
|
|
1063 // use slow signature handler
|
|
|
1064 } else {
|
|
|
1065 // debugging suppport
|
|
|
1066 if (PrintSignatureHandlers) {
|
|
|
1067 tty->cr();
|
|
|
1068 tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)",
|
|
|
1069 _handlers->length(),
|
|
|
1070 (method->is_static() ? "static" : "receiver"),
|
|
|
1071 method->name_and_sig_as_C_string(),
|
|
|
1072 fingerprint,
|
|
|
1073 buffer.code_size());
|
|
|
1074 Disassembler::decode(handler, handler + buffer.code_size());
|
|
|
1075 #ifndef PRODUCT
|
|
|
1076 tty->print_cr(" --- associated result handler ---");
|
|
|
1077 address rh_begin = Interpreter::result_handler(method()->result_type());
|
|
|
1078 address rh_end = rh_begin;
|
|
|
1079 while (*(int*)rh_end != 0) {
|
|
|
1080 rh_end += sizeof(int);
|
|
|
1081 }
|
|
|
1082 Disassembler::decode(rh_begin, rh_end);
|
|
|
1083 #endif
|
|
|
1084 }
|
|
|
1085 // add handler to library
|
|
|
1086 _fingerprints->append(fingerprint);
|
|
|
1087 _handlers->append(handler);
|
|
|
1088 // set handler index
|
|
|
1089 assert(_fingerprints->length() == _handlers->length(), "sanity check");
|
|
|
1090 handler_index = _fingerprints->length() - 1;
|
|
|
1091 }
|
|
|
1092 }
|
|
|
1093 } else {
|
|
|
1094 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
|
|
|
1095 }
|
|
|
1096 if (handler_index < 0) {
|
|
|
1097 // use generic signature handler
|
|
|
1098 method->set_signature_handler(Interpreter::slow_signature_handler());
|
|
|
1099 } else {
|
|
|
1100 // set handler
|
|
|
1101 method->set_signature_handler(_handlers->at(handler_index));
|
|
|
1102 }
|
|
|
1103 }
|
|
|
1104 assert(method->signature_handler() == Interpreter::slow_signature_handler() ||
|
|
|
1105 _handlers->find(method->signature_handler()) == _fingerprints->find(Fingerprinter(method).fingerprint()),
|
|
|
1106 "sanity check");
|
|
|
1107 }
|
|
|
1108
|
|
|
1109
|
|
|
1110 BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL;
|
|
|
1111 address SignatureHandlerLibrary::_handler = NULL;
|
|
|
1112 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL;
|
|
|
1113 GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL;
|
|
|
1114 address SignatureHandlerLibrary::_buffer = NULL;
|
|
|
1115
|
|
|
1116
|
|
|
1117 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, methodOopDesc* method))
|
|
|
1118 methodHandle m(thread, method);
|
|
|
1119 assert(m->is_native(), "sanity check");
|
|
|
1120 // lookup native function entry point if it doesn't exist
|
|
|
1121 bool in_base_library;
|
|
|
1122 if (!m->has_native_function()) {
|
|
|
1123 NativeLookup::lookup(m, in_base_library, CHECK);
|
|
|
1124 }
|
|
|
1125 // make sure signature handler is installed
|
|
|
1126 SignatureHandlerLibrary::add(m);
|
|
|
1127 // The interpreter entry point checks the signature handler first,
|
|
|
1128 // before trying to fetch the native entry point and klass mirror.
|
|
|
1129 // We must set the signature handler last, so that multiple processors
|
|
|
1130 // preparing the same method will be sure to see non-null entry & mirror.
|
|
|
1131 IRT_END
|
|
|
1132
|
|
|
1133 #if defined(IA32) || defined(AMD64)
|
|
|
1134 IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address))
|
|
|
1135 if (src_address == dest_address) {
|
|
|
1136 return;
|
|
|
1137 }
|
|
|
1138 ResetNoHandleMark rnm; // In a LEAF entry.
|
|
|
1139 HandleMark hm;
|
|
|
1140 ResourceMark rm;
|
|
|
1141 frame fr = thread->last_frame();
|
|
|
1142 assert(fr.is_interpreted_frame(), "");
|
|
|
1143 jint bci = fr.interpreter_frame_bci();
|
|
|
1144 methodHandle mh(thread, fr.interpreter_frame_method());
|
|
|
1145 Bytecode_invoke* invoke = Bytecode_invoke_at(mh, bci);
|
|
|
1146 ArgumentSizeComputer asc(invoke->signature());
|
|
|
1147 int size_of_arguments = (asc.size() + (invoke->is_invokestatic() ? 0 : 1)); // receiver
|
|
|
1148 Copy::conjoint_bytes(src_address, dest_address,
|
|
|
1149 size_of_arguments * Interpreter::stackElementSize());
|
|
|
1150 IRT_END
|
|
|
1151 #endif
|
