annotate src/share/vm/runtime/sharedRuntime.hpp @ 9126:bc26f978b0ce

HotSpotResolvedObjectType: implement hasFinalizeSubclass() correctly don't use the (wrong) cached value, but ask the runtime on each request. Fixes regression on xml.* benchmarks @ specjvm2008. The problem was: After the constructor of Object was deoptimized due to an assumption violation, it was recompiled again after some time. However, on recompilation, the value of hasFinalizeSubclass for the class was not updated and it was compiled again with a, now wrong, assumption, which then triggers deoptimization again. This was repeated until it hit the recompilation limit (defined by PerMethodRecompilationCutoff), and therefore only executed by the interpreter from now on, causing the performance regression.
author Bernhard Urban <bernhard.urban@jku.at>
date Mon, 15 Apr 2013 19:54:58 +0200
parents f94bb5d20e5d
children 836a62f43af9
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1 /*
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP
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26 #define SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP
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27
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28 #include "interpreter/bytecodeHistogram.hpp"
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29 #include "interpreter/bytecodeTracer.hpp"
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30 #include "interpreter/linkResolver.hpp"
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31 #include "memory/allocation.hpp"
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32 #include "memory/resourceArea.hpp"
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33 #include "runtime/threadLocalStorage.hpp"
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34 #include "utilities/hashtable.hpp"
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35 #include "utilities/macros.hpp"
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36
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37 class AdapterHandlerEntry;
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38 class AdapterHandlerTable;
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39 class AdapterFingerPrint;
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40 class vframeStream;
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41
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42 // Runtime is the base class for various runtime interfaces
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43 // (InterpreterRuntime, CompilerRuntime, etc.). It provides
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44 // shared functionality such as exception forwarding (C++ to
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45 // Java exceptions), locking/unlocking mechanisms, statistical
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46 // information, etc.
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47
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48 class SharedRuntime: AllStatic {
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49 friend class VMStructs;
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50
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51 private:
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52 static methodHandle resolve_sub_helper(JavaThread *thread,
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53 bool is_virtual,
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54 bool is_optimized, TRAPS);
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55
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56 // Shared stub locations
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57
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58 static RuntimeStub* _deoptimized_installed_code_blob;
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59 static RuntimeStub* _wrong_method_blob;
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60 static RuntimeStub* _ic_miss_blob;
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61 static RuntimeStub* _resolve_opt_virtual_call_blob;
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62 static RuntimeStub* _resolve_virtual_call_blob;
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63 static RuntimeStub* _resolve_static_call_blob;
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64
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65 static DeoptimizationBlob* _deopt_blob;
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66
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67 static SafepointBlob* _polling_page_vectors_safepoint_handler_blob;
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68 static SafepointBlob* _polling_page_safepoint_handler_blob;
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69 static SafepointBlob* _polling_page_return_handler_blob;
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70
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71 #ifdef COMPILER2
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72 static UncommonTrapBlob* _uncommon_trap_blob;
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73 #endif // COMPILER2
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74
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75 #ifndef PRODUCT
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76 // Counters
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77 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable)
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78 #endif // !PRODUCT
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80 private:
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81 enum { POLL_AT_RETURN, POLL_AT_LOOP, POLL_AT_VECTOR_LOOP };
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82 static SafepointBlob* generate_handler_blob(address call_ptr, int poll_type);
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83 static RuntimeStub* generate_resolve_blob(address destination, const char* name);
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84
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85 public:
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86 static void generate_stubs(void);
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87
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88 // max bytes for each dtrace string parameter
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89 enum { max_dtrace_string_size = 256 };
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90
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91 // The following arithmetic routines are used on platforms that do
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92 // not have machine instructions to implement their functionality.
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93 // Do not remove these.
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94
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95 // long arithmetics
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96 static jlong lmul(jlong y, jlong x);
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97 static jlong ldiv(jlong y, jlong x);
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98 static jlong lrem(jlong y, jlong x);
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99
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100 // float and double remainder
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101 static jfloat frem(jfloat x, jfloat y);
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102 static jdouble drem(jdouble x, jdouble y);
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103
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104 #ifdef __SOFTFP__
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105 static jfloat fadd(jfloat x, jfloat y);
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106 static jfloat fsub(jfloat x, jfloat y);
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107 static jfloat fmul(jfloat x, jfloat y);
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108 static jfloat fdiv(jfloat x, jfloat y);
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109
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110 static jdouble dadd(jdouble x, jdouble y);
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111 static jdouble dsub(jdouble x, jdouble y);
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112 static jdouble dmul(jdouble x, jdouble y);
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113 static jdouble ddiv(jdouble x, jdouble y);
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114 #endif // __SOFTFP__
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115
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116 // float conversion (needs to set appropriate rounding mode)
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117 static jint f2i (jfloat x);
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118 static jlong f2l (jfloat x);
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119 static jint d2i (jdouble x);
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120 static jlong d2l (jdouble x);
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121 static jfloat d2f (jdouble x);
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122 static jfloat l2f (jlong x);
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123 static jdouble l2d (jlong x);
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124
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125 #ifdef __SOFTFP__
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126 static jfloat i2f (jint x);
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127 static jdouble i2d (jint x);
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128 static jdouble f2d (jfloat x);
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129 #endif // __SOFTFP__
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130
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131 // double trigonometrics and transcendentals
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132 static jdouble dsin(jdouble x);
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133 static jdouble dcos(jdouble x);
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134 static jdouble dtan(jdouble x);
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135 static jdouble dlog(jdouble x);
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136 static jdouble dlog10(jdouble x);
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137 static jdouble dexp(jdouble x);
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138 static jdouble dpow(jdouble x, jdouble y);
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139
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140 #if defined(__SOFTFP__) || defined(E500V2)
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141 static double dabs(double f);
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142 #endif
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143
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144 #if defined(__SOFTFP__) || defined(PPC)
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145 static double dsqrt(double f);
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146 #endif
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147
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148 #ifdef __SOFTFP__
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149 // C++ compiler generates soft float instructions as well as passing
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150 // float and double in registers.
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151 static int fcmpl(float x, float y);
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152 static int fcmpg(float x, float y);
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153 static int dcmpl(double x, double y);
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154 static int dcmpg(double x, double y);
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155
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156 static int unordered_fcmplt(float x, float y);
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157 static int unordered_dcmplt(double x, double y);
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158 static int unordered_fcmple(float x, float y);
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159 static int unordered_dcmple(double x, double y);
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160 static int unordered_fcmpge(float x, float y);
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161 static int unordered_dcmpge(double x, double y);
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162 static int unordered_fcmpgt(float x, float y);
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163 static int unordered_dcmpgt(double x, double y);
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164
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165 static float fneg(float f);
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166 static double dneg(double f);
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167 #endif
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168
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169 // exception handling across interpreter/compiler boundaries
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170 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address);
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171 static address exception_handler_for_return_address(JavaThread* thread, address return_address);
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172
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173 #if INCLUDE_ALL_GCS
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174 // G1 write barriers
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175 static void g1_wb_pre(oopDesc* orig, JavaThread *thread);
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176 static void g1_wb_post(void* card_addr, JavaThread* thread);
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177 #endif // INCLUDE_ALL_GCS
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178
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179 // exception handling and implicit exceptions
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180 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception,
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181 bool force_unwind, bool top_frame_only);
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182 enum ImplicitExceptionKind {
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183 IMPLICIT_NULL,
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184 IMPLICIT_DIVIDE_BY_ZERO,
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185 STACK_OVERFLOW
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186 };
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187 static void throw_AbstractMethodError(JavaThread* thread);
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188 static void throw_IncompatibleClassChangeError(JavaThread* thread);
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189 static void throw_ArithmeticException(JavaThread* thread);
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190 static void throw_NullPointerException(JavaThread* thread);
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191 static void throw_NullPointerException_at_call(JavaThread* thread);
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192 static void throw_StackOverflowError(JavaThread* thread);
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193 static address continuation_for_implicit_exception(JavaThread* thread,
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194 address faulting_pc,
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195 ImplicitExceptionKind exception_kind);
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196 #ifdef GRAAL
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197 static address deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason);
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198 #endif
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199
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200 // Shared stub locations
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201 static address get_poll_stub(address pc);
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202
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203 static address get_ic_miss_stub() {
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204 assert(_ic_miss_blob!= NULL, "oops");
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205 return _ic_miss_blob->entry_point();
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206 }
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207
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208 static address get_handle_wrong_method_stub() {
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209 assert(_wrong_method_blob!= NULL, "oops");
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210 return _wrong_method_blob->entry_point();
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211 }
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212
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213 static address get_deoptimized_installed_code_stub() {
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214 assert(_deoptimized_installed_code_blob!= NULL, "oops");
f94bb5d20e5d Rename MethodInvalidatedException to InvalidInstalledCodeException (and make it a checked exception). Make sure that a compiled code object can always be directly called without first doing a check on the native method pointer.
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215 return _deoptimized_installed_code_blob->entry_point();
f94bb5d20e5d Rename MethodInvalidatedException to InvalidInstalledCodeException (and make it a checked exception). Make sure that a compiled code object can always be directly called without first doing a check on the native method pointer.
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216 }
f94bb5d20e5d Rename MethodInvalidatedException to InvalidInstalledCodeException (and make it a checked exception). Make sure that a compiled code object can always be directly called without first doing a check on the native method pointer.
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217
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218 #ifdef COMPILER2
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219 static void generate_uncommon_trap_blob(void);
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220 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; }
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221 #endif // COMPILER2
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222
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223 static address get_resolve_opt_virtual_call_stub(){
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224 assert(_resolve_opt_virtual_call_blob != NULL, "oops");
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225 return _resolve_opt_virtual_call_blob->entry_point();
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226 }
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227 static address get_resolve_virtual_call_stub() {
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228 assert(_resolve_virtual_call_blob != NULL, "oops");
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229 return _resolve_virtual_call_blob->entry_point();
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230 }
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231 static address get_resolve_static_call_stub() {
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232 assert(_resolve_static_call_blob != NULL, "oops");
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233 return _resolve_static_call_blob->entry_point();
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234 }
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235
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236 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; }
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237 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; }
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238 static SafepointBlob* polling_page_vectors_safepoint_handler_blob() { return _polling_page_vectors_safepoint_handler_blob; }
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239
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240 // Counters
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241 #ifndef PRODUCT
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242 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; }
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243 #endif // PRODUCT
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244
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245 // Helper routine for full-speed JVMTI exception throwing support
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246 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception);
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247 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL);
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248
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249 // RedefineClasses() tracing support for obsolete method entry
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250 static int rc_trace_method_entry(JavaThread* thread, Method* m);
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251
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252 // To be used as the entry point for unresolved native methods.
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253 static address native_method_throw_unsatisfied_link_error_entry();
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254 static address native_method_throw_unsupported_operation_exception_entry();
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255
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256 // bytecode tracing is only used by the TraceBytecodes
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257 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0;
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258
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259 // Used to back off a spin lock that is under heavy contention
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260 static void yield_all(JavaThread* thread, int attempts = 0);
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261
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262 static oop retrieve_receiver( Symbol* sig, frame caller );
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263
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264 static void register_finalizer(JavaThread* thread, oopDesc* obj);
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265
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266 // dtrace notifications
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267 static int dtrace_object_alloc(oopDesc* o);
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268 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o);
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269 static int dtrace_method_entry(JavaThread* thread, Method* m);
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270 static int dtrace_method_exit(JavaThread* thread, Method* m);
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271
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272 // Utility method for retrieving the Java thread id, returns 0 if the
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273 // thread is not a well formed Java thread.
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274 static jlong get_java_tid(Thread* thread);
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275
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276
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277 // used by native wrappers to reenable yellow if overflow happened in native code
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278 static void reguard_yellow_pages();
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279
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280 /**
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281 * Fill in the "X cannot be cast to a Y" message for ClassCastException
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282 *
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283 * @param thr the current thread
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284 * @param name the name of the class of the object attempted to be cast
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285 * @return the dynamically allocated exception message (must be freed
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286 * by the caller using a resource mark)
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287 *
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288 * BCP must refer to the current 'checkcast' opcode for the frame
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289 * on top of the stack.
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290 * The caller (or one of it's callers) must use a ResourceMark
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291 * in order to correctly free the result.
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292 */
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293 static char* generate_class_cast_message(JavaThread* thr, const char* name);
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294
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295 /**
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296 * Fill in the "X cannot be cast to a Y" message for ClassCastException
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297 *
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298 * @param name the name of the class of the object attempted to be cast
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299 * @param klass the name of the target klass attempt
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300 * @param gripe the specific kind of problem being reported
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301 * @return the dynamically allocated exception message (must be freed
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302 * by the caller using a resource mark)
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303 *
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304 * This version does not require access the frame, so it can be called
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305 * from interpreted code
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306 * The caller (or one of it's callers) must use a ResourceMark
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307 * in order to correctly free the result.
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308 */
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309 static char* generate_class_cast_message(const char* name, const char* klass,
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310 const char* gripe = " cannot be cast to ");
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311
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312 // Resolves a call site- may patch in the destination of the call into the
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313 // compiled code.
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314 static methodHandle resolve_helper(JavaThread *thread,
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315 bool is_virtual,
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316 bool is_optimized, TRAPS);
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317
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318 private:
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319 // deopt blob
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320 static void generate_deopt_blob(void);
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321
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322 public:
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323 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; }
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324
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325 // Resets a call-site in compiled code so it will get resolved again.
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326 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS);
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327
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328 // In the code prolog, if the klass comparison fails, the inline cache
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329 // misses and the call site is patched to megamorphic
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330 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS);
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331
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332 // Find the method that called us.
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333 static methodHandle find_callee_method(JavaThread* thread, TRAPS);
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334
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335
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336 private:
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337 static Handle find_callee_info(JavaThread* thread,
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338 Bytecodes::Code& bc,
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339 CallInfo& callinfo, TRAPS);
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340 static Handle find_callee_info_helper(JavaThread* thread,
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341 vframeStream& vfst,
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342 Bytecodes::Code& bc,
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343 CallInfo& callinfo, TRAPS);
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344
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345 static address clean_virtual_call_entry();
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346 static address clean_opt_virtual_call_entry();
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347 static address clean_static_call_entry();
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348
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349 public:
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350
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351 // Read the array of BasicTypes from a Java signature, and compute where
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352 // compiled Java code would like to put the results. Values in reg_lo and
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353 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are
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354 // registers, those above refer to 4-byte stack slots. All stack slots are
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355 // based off of the window top. SharedInfo::stack0 refers to the first usable
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356 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word
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357 // 4-bytes higher. So for sparc because the register window save area is at
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358 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0
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359 // will be just above it. (
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360 // return value is the maximum number of VMReg stack slots the convention will use.
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361 static int java_calling_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed, int is_outgoing);
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362
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363 static void check_member_name_argument_is_last_argument(methodHandle method,
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364 const BasicType* sig_bt,
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365 const VMRegPair* regs) NOT_DEBUG_RETURN;
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366
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367 // Ditto except for calling C
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368 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed);
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369
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370 // Generate I2C and C2I adapters. These adapters are simple argument marshalling
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371 // blobs. Unlike adapters in the tiger and earlier releases the code in these
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372 // blobs does not create a new frame and are therefore virtually invisible
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373 // to the stack walking code. In general these blobs extend the callers stack
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374 // as needed for the conversion of argument locations.
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375
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376 // When calling a c2i blob the code will always call the interpreter even if
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377 // by the time we reach the blob there is compiled code available. This allows
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378 // the blob to pass the incoming stack pointer (the sender sp) in a known
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379 // location for the interpreter to record. This is used by the frame code
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380 // to correct the sender code to match up with the stack pointer when the
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381 // thread left the compiled code. In addition it allows the interpreter
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382 // to remove the space the c2i adapter allocated to do it argument conversion.
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383
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384 // Although a c2i blob will always run interpreted even if compiled code is
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385 // present if we see that compiled code is present the compiled call site
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386 // will be patched/re-resolved so that later calls will run compiled.
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387
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388 // Aditionally a c2i blob need to have a unverified entry because it can be reached
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389 // in situations where the call site is an inlined cache site and may go megamorphic.
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390
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391 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed
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392 // that the interpreter before it does any call dispatch will record the current
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393 // stack pointer in the interpreter frame. On return it will restore the stack
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394 // pointer as needed. This means the i2c adapter code doesn't need any special
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395 // handshaking path with compiled code to keep the stack walking correct.
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396
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397 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm,
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398 int total_args_passed,
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399 int max_arg,
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400 const BasicType *sig_bt,
1187
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
never
parents: 1138
diff changeset
401 const VMRegPair *regs,
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
never
parents: 1138
diff changeset
402 AdapterFingerPrint* fingerprint);
0
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403
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404 // OSR support
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405
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406 // OSR_migration_begin will extract the jvm state from an interpreter
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407 // frame (locals, monitors) and store the data in a piece of C heap
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408 // storage. This then allows the interpreter frame to be removed from the
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409 // stack and the OSR nmethod to be called. That method is called with a
a61af66fc99e Initial load
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410 // pointer to the C heap storage. This pointer is the return value from
a61af66fc99e Initial load
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411 // OSR_migration_begin.
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412
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413 static intptr_t* OSR_migration_begin( JavaThread *thread);
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414
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415 // OSR_migration_end is a trivial routine. It is called after the compiled
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416 // method has extracted the jvm state from the C heap that OSR_migration_begin
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417 // created. It's entire job is to simply free this storage.
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418 static void OSR_migration_end ( intptr_t* buf);
a61af66fc99e Initial load
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419
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420 // Convert a sig into a calling convention register layout
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421 // and find interesting things about it.
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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422 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size);
0
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423 static VMReg name_for_receiver();
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424
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425 // "Top of Stack" slots that may be unused by the calling convention but must
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426 // otherwise be preserved.
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427 // On Intel these are not necessary and the value can be zero.
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428 // On Sparc this describes the words reserved for storing a register window
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429 // when an interrupt occurs.
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430 static uint out_preserve_stack_slots();
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431
6792
137868b7aa6f 7196199: java/text/Bidi/Bug6665028.java failed: Bidi run count incorrect
kvn
parents: 6790
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432 // Is vector's size (in bytes) bigger than a size saved by default?
137868b7aa6f 7196199: java/text/Bidi/Bug6665028.java failed: Bidi run count incorrect
kvn
parents: 6790
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433 // For example, on x86 16 bytes XMM registers are saved by default.
137868b7aa6f 7196199: java/text/Bidi/Bug6665028.java failed: Bidi run count incorrect
kvn
parents: 6790
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434 static bool is_wide_vector(int size);
137868b7aa6f 7196199: java/text/Bidi/Bug6665028.java failed: Bidi run count incorrect
kvn
parents: 6790
diff changeset
435
0
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436 // Save and restore a native result
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437 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
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438 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
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439
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440 // Generate a native wrapper for a given method. The method takes arguments
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441 // in the Java compiled code convention, marshals them to the native
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442 // convention (handlizes oops, etc), transitions to native, makes the call,
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443 // returns to java state (possibly blocking), unhandlizes any result and
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444 // returns.
6266
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 6197
diff changeset
445 //
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 6197
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446 // The wrapper may contain special-case code if the given method
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 6197
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447 // is a JNI critical method, or a compiled method handle adapter,
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 6197
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448 // such as _invokeBasic, _linkToVirtual, etc.
6790
2cb2f30450c7 7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents: 6725
diff changeset
449 static nmethod* generate_native_wrapper(MacroAssembler* masm,
0
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450 methodHandle method,
2405
3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents: 2177
diff changeset
451 int compile_id,
6790
2cb2f30450c7 7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents: 6725
diff changeset
452 BasicType* sig_bt,
2cb2f30450c7 7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents: 6725
diff changeset
453 VMRegPair* regs,
0
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454 BasicType ret_type );
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455
4873
0382d2b469b2 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 3908
diff changeset
456 // Block before entering a JNI critical method
0382d2b469b2 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 3908
diff changeset
457 static void block_for_jni_critical(JavaThread* thread);
0382d2b469b2 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 3908
diff changeset
458
116
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
459 #ifdef HAVE_DTRACE_H
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
460 // Generate a dtrace wrapper for a given method. The method takes arguments
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
461 // in the Java compiled code convention, marshals them to the native
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
462 // convention (handlizes oops, etc), transitions to native, makes the call,
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
463 // returns to java state (possibly blocking), unhandlizes any result and
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
464 // returns.
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
465 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm,
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
466 methodHandle method);
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
467
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
468 // dtrace support to convert a Java string to utf8
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
469 static void get_utf(oopDesc* src, address dst);
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
470 #endif // def HAVE_DTRACE_H
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
471
0
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472 // A compiled caller has just called the interpreter, but compiled code
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473 // exists. Patch the caller so he no longer calls into the interpreter.
6725
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 6271
diff changeset
474 static void fixup_callers_callsite(Method* moop, address ret_pc);
0
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475
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476 // Slow-path Locking and Unlocking
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477 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
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478 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
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479
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480 // Resolving of calls
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481 static address resolve_static_call_C (JavaThread *thread);
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482 static address resolve_virtual_call_C (JavaThread *thread);
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483 static address resolve_opt_virtual_call_C(JavaThread *thread);
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484
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485 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.)
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486 static void slow_arraycopy_C(oopDesc* src, jint src_pos,
a61af66fc99e Initial load
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487 oopDesc* dest, jint dest_pos,
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diff changeset
488 jint length, JavaThread* thread);
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489
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490 // handle ic miss with caller being compiled code
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491 // wrong method handling (inline cache misses, zombie methods)
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diff changeset
492 static address handle_wrong_method(JavaThread* thread);
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493 static address handle_wrong_method_ic_miss(JavaThread* thread);
a61af66fc99e Initial load
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494
9023
f94bb5d20e5d Rename MethodInvalidatedException to InvalidInstalledCodeException (and make it a checked exception). Make sure that a compiled code object can always be directly called without first doing a check on the native method pointer.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 8124
diff changeset
495 // handle deoptimized installed code
f94bb5d20e5d Rename MethodInvalidatedException to InvalidInstalledCodeException (and make it a checked exception). Make sure that a compiled code object can always be directly called without first doing a check on the native method pointer.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 8124
diff changeset
496 static address handle_deoptimized_installed_code(JavaThread* thread);
f94bb5d20e5d Rename MethodInvalidatedException to InvalidInstalledCodeException (and make it a checked exception). Make sure that a compiled code object can always be directly called without first doing a check on the native method pointer.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 8124
diff changeset
497
0
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498 #ifndef PRODUCT
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499
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diff changeset
500 // Collect and print inline cache miss statistics
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501 private:
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diff changeset
502 enum { maxICmiss_count = 100 };
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503 static int _ICmiss_index; // length of IC miss histogram
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504 static int _ICmiss_count[maxICmiss_count]; // miss counts
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505 static address _ICmiss_at[maxICmiss_count]; // miss addresses
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diff changeset
506 static void trace_ic_miss(address at);
a61af66fc99e Initial load
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507
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diff changeset
508 public:
a61af66fc99e Initial load
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diff changeset
509 static int _monitor_enter_ctr; // monitor enter slow
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diff changeset
510 static int _monitor_exit_ctr; // monitor exit slow
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diff changeset
511 static int _throw_null_ctr; // throwing a null-pointer exception
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512 static int _ic_miss_ctr; // total # of IC misses
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diff changeset
513 static int _wrong_method_ctr;
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diff changeset
514 static int _resolve_static_ctr;
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515 static int _resolve_virtual_ctr;
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diff changeset
516 static int _resolve_opt_virtual_ctr;
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diff changeset
517 static int _implicit_null_throws;
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518 static int _implicit_div0_throws;
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diff changeset
519
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520 static int _jbyte_array_copy_ctr; // Slow-path byte array copy
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521 static int _jshort_array_copy_ctr; // Slow-path short array copy
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diff changeset
522 static int _jint_array_copy_ctr; // Slow-path int array copy
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523 static int _jlong_array_copy_ctr; // Slow-path long array copy
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diff changeset
524 static int _oop_array_copy_ctr; // Slow-path oop array copy
a61af66fc99e Initial load
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525 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast
a61af66fc99e Initial load
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diff changeset
526 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks
a61af66fc99e Initial load
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diff changeset
527 static int _generic_array_copy_ctr; // Slow-path includes type decoding
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diff changeset
528 static int _slow_array_copy_ctr; // Slow-path failed out to a method call
a61af66fc99e Initial load
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diff changeset
529
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parents:
diff changeset
530 static int _new_instance_ctr; // 'new' object requires GC
a61af66fc99e Initial load
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diff changeset
531 static int _new_array_ctr; // 'new' array requires GC
a61af66fc99e Initial load
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diff changeset
532 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr;
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diff changeset
533 static int _find_handler_ctr; // find exception handler
a61af66fc99e Initial load
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534 static int _rethrow_ctr; // rethrow exception
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diff changeset
535 static int _mon_enter_stub_ctr; // monitor enter stub
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diff changeset
536 static int _mon_exit_stub_ctr; // monitor exit stub
a61af66fc99e Initial load
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diff changeset
537 static int _mon_enter_ctr; // monitor enter slow
a61af66fc99e Initial load
duke
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diff changeset
538 static int _mon_exit_ctr; // monitor exit slow
a61af66fc99e Initial load
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parents:
diff changeset
539 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check
a61af66fc99e Initial load
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diff changeset
540
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parents:
diff changeset
541 // Statistics code
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diff changeset
542 // stats for "normal" compiled calls (non-interface)
a61af66fc99e Initial load
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543 static int _nof_normal_calls; // total # of calls
a61af66fc99e Initial load
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diff changeset
544 static int _nof_optimized_calls; // total # of statically-bound calls
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diff changeset
545 static int _nof_inlined_calls; // total # of inlined normal calls
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diff changeset
546 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial)
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diff changeset
547 static int _nof_inlined_static_calls; // total # of inlined static calls
a61af66fc99e Initial load
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diff changeset
548 // stats for compiled interface calls
a61af66fc99e Initial load
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parents:
diff changeset
549 static int _nof_interface_calls; // total # of compiled calls
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diff changeset
550 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls
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diff changeset
551 static int _nof_inlined_interface_calls; // total # of inlined interface calls
a61af66fc99e Initial load
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552 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls
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553 // stats for runtime exceptions
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554 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining
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555
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556 public: // for compiler
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557 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; }
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558 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; }
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559 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; }
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560 static address nof_static_calls_addr() { return (address)&_nof_static_calls; }
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561 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; }
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562 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; }
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563 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; }
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564 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; }
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565 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; }
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566 static void print_call_statistics(int comp_total);
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567 static void print_statistics();
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568 static void print_ic_miss_histogram();
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569
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570 #endif // PRODUCT
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571 };
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572
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573
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574 // ---------------------------------------------------------------------------
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575 // Implementation of AdapterHandlerLibrary
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576 //
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577 // This library manages argument marshaling adapters and native wrappers.
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578 // There are 2 flavors of adapters: I2C and C2I.
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579 //
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580 // The I2C flavor takes a stock interpreted call setup, marshals the
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581 // arguments for a Java-compiled call, and jumps to Rmethod-> code()->
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582 // code_begin(). It is broken to call it without an nmethod assigned.
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583 // The usual behavior is to lift any register arguments up out of the
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584 // stack and possibly re-pack the extra arguments to be contigious.
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585 // I2C adapters will save what the interpreter's stack pointer will be
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586 // after arguments are popped, then adjust the interpreter's frame
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587 // size to force alignment and possibly to repack the arguments.
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588 // After re-packing, it jumps to the compiled code start. There are
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589 // no safepoints in this adapter code and a GC cannot happen while
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590 // marshaling is in progress.
0
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591 //
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592 // The C2I flavor takes a stock compiled call setup plus the target method in
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593 // Rmethod, marshals the arguments for an interpreted call and jumps to
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594 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been
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595 // setup. Compiled frames are fixed-size and the args are likely not in the
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596 // right place. Hence all the args will likely be copied into the
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597 // interpreter's frame, forcing that frame to grow. The compiled frame's
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598 // outgoing stack args will be dead after the copy.
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599 //
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600 // Native wrappers, like adapters, marshal arguments. Unlike adapters they
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601 // also perform an offical frame push & pop. They have a call to the native
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602 // routine in their middles and end in a return (instead of ending in a jump).
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603 // The native wrappers are stored in real nmethods instead of the BufferBlobs
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604 // used by the adapters. The code generation happens here because it's very
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605 // similar to what the adapters have to do.
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606
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607 class AdapterHandlerEntry : public BasicHashtableEntry<mtCode> {
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608 friend class AdapterHandlerTable;
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609
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610 private:
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611 AdapterFingerPrint* _fingerprint;
0
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612 address _i2c_entry;
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613 address _c2i_entry;
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614 address _c2i_unverified_entry;
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615
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616 #ifdef ASSERT
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617 // Captures code and signature used to generate this adapter when
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618 // verifing adapter equivalence.
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619 unsigned char* _saved_code;
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620 int _code_length;
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621 BasicType* _saved_sig;
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622 int _total_args_passed;
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623 #endif
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624
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625 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) {
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626 _fingerprint = fingerprint;
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627 _i2c_entry = i2c_entry;
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628 _c2i_entry = c2i_entry;
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629 _c2i_unverified_entry = c2i_unverified_entry;
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630 #ifdef ASSERT
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631 _saved_code = NULL;
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632 _code_length = 0;
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633 _saved_sig = NULL;
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634 _total_args_passed = 0;
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635 #endif
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636 }
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637
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638 void deallocate();
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639
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640 // should never be used
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641 AdapterHandlerEntry();
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642
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643 public:
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644 address get_i2c_entry() const { return _i2c_entry; }
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645 address get_c2i_entry() const { return _c2i_entry; }
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646 address get_c2i_unverified_entry() const { return _c2i_unverified_entry; }
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647
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648 address base_address();
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649 void relocate(address new_base);
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650
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651 AdapterFingerPrint* fingerprint() const { return _fingerprint; }
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652
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653 AdapterHandlerEntry* next() {
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654 return (AdapterHandlerEntry*)BasicHashtableEntry<mtCode>::next();
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655 }
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656
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657 #ifdef ASSERT
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658 // Used to verify that code generated for shared adapters is equivalent
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659 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt);
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660 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt);
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661 #endif
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662
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663 //virtual void print_on(outputStream* st) const; DO NOT USE
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664 void print_adapter_on(outputStream* st) const;
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665 };
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666
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667 class AdapterHandlerLibrary: public AllStatic {
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668 private:
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669 static BufferBlob* _buffer; // the temporary code buffer in CodeCache
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670 static AdapterHandlerTable* _adapters;
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671 static AdapterHandlerEntry* _abstract_method_handler;
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672 static BufferBlob* buffer_blob();
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673 static void initialize();
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674
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675 public:
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676
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677 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint,
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678 address i2c_entry, address c2i_entry, address c2i_unverified_entry);
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679 static nmethod* create_native_wrapper(methodHandle method, int compile_id);
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680 static AdapterHandlerEntry* get_adapter(methodHandle method);
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681
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682 #ifdef HAVE_DTRACE_H
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683 static nmethod* create_dtrace_nmethod (methodHandle method);
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684 #endif // HAVE_DTRACE_H
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685
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686 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); }
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687 static void print_handler_on(outputStream* st, CodeBlob* b);
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688 static bool contains(CodeBlob* b);
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689 #ifndef PRODUCT
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690 static void print_statistics();
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691 #endif /* PRODUCT */
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692
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693 };
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694
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695 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP