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annotate src/share/vm/runtime/sharedRuntime.hpp @ 7212:291ffc492eb6

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Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
author Doug Simon <doug.simon@oracle.com>
date Fri, 14 Dec 2012 14:35:13 +0100
parents e522a00b91aa
children 5fc51c1ecdeb
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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
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36 class AdapterHandlerEntry;
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37 class AdapterHandlerTable;
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38 class AdapterFingerPrint;
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39 class vframeStream;
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40
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41 // Runtime is the base class for various runtime interfaces
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42 // (InterpreterRuntime, CompilerRuntime, etc.). It provides
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43 // shared functionality such as exception forwarding (C++ to
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44 // Java exceptions), locking/unlocking mechanisms, statistical
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45 // information, etc.
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46
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47 class SharedRuntime: AllStatic {
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48 friend class VMStructs;
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49
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50 private:
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51 static methodHandle resolve_sub_helper(JavaThread *thread,
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52 bool is_virtual,
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53 bool is_optimized, TRAPS);
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54
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55 // Shared stub locations
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56
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57 static RuntimeStub* _wrong_method_blob;
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58 static RuntimeStub* _ic_miss_blob;
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59 static RuntimeStub* _resolve_opt_virtual_call_blob;
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60 static RuntimeStub* _resolve_virtual_call_blob;
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61 static RuntimeStub* _resolve_static_call_blob;
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62
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63 static DeoptimizationBlob* _deopt_blob;
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64
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65 static SafepointBlob* _polling_page_vectors_safepoint_handler_blob;
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66 static SafepointBlob* _polling_page_safepoint_handler_blob;
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67 static SafepointBlob* _polling_page_return_handler_blob;
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68
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69 #ifdef COMPILER2
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70 static UncommonTrapBlob* _uncommon_trap_blob;
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71 #endif // COMPILER2
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72
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73 #ifndef PRODUCT
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74 // Counters
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75 static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable)
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76 #endif // !PRODUCT
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77
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78 private:
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79 enum { POLL_AT_RETURN, POLL_AT_LOOP, POLL_AT_VECTOR_LOOP };
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80 static SafepointBlob* generate_handler_blob(address call_ptr, int poll_type);
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81 static RuntimeStub* generate_resolve_blob(address destination, const char* name);
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82
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83 public:
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84 static void generate_stubs(void);
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85
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86 // max bytes for each dtrace string parameter
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87 enum { max_dtrace_string_size = 256 };
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88
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89 // The following arithmetic routines are used on platforms that do
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90 // not have machine instructions to implement their functionality.
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91 // Do not remove these.
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92
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93 // long arithmetics
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94 static jlong lmul(jlong y, jlong x);
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95 static jlong ldiv(jlong y, jlong x);
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96 static jlong lrem(jlong y, jlong x);
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97
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98 // float and double remainder
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99 static jfloat frem(jfloat x, jfloat y);
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100 static jdouble drem(jdouble x, jdouble y);
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101
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102 #ifdef __SOFTFP__
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103 static jfloat fadd(jfloat x, jfloat y);
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104 static jfloat fsub(jfloat x, jfloat y);
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105 static jfloat fmul(jfloat x, jfloat y);
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106 static jfloat fdiv(jfloat x, jfloat y);
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107
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108 static jdouble dadd(jdouble x, jdouble y);
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109 static jdouble dsub(jdouble x, jdouble y);
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110 static jdouble dmul(jdouble x, jdouble y);
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111 static jdouble ddiv(jdouble x, jdouble y);
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112 #endif // __SOFTFP__
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113
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114 // float conversion (needs to set appropriate rounding mode)
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115 static jint f2i (jfloat x);
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116 static jlong f2l (jfloat x);
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117 static jint d2i (jdouble x);
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118 static jlong d2l (jdouble x);
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119 static jfloat d2f (jdouble x);
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120 static jfloat l2f (jlong x);
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121 static jdouble l2d (jlong x);
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122
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123 #ifdef __SOFTFP__
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124 static jfloat i2f (jint x);
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125 static jdouble i2d (jint x);
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126 static jdouble f2d (jfloat x);
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127 #endif // __SOFTFP__
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128
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129 // double trigonometrics and transcendentals
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130 static jdouble dsin(jdouble x);
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131 static jdouble dcos(jdouble x);
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132 static jdouble dtan(jdouble x);
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133 static jdouble dlog(jdouble x);
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134 static jdouble dlog10(jdouble x);
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135 static jdouble dexp(jdouble x);
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136 static jdouble dpow(jdouble x, jdouble y);
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137
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138 #if defined(__SOFTFP__) || defined(E500V2)
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139 static double dabs(double f);
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140 #endif
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141
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142 #if defined(__SOFTFP__) || defined(PPC)
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143 static double dsqrt(double f);
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144 #endif
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145
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146 #ifdef __SOFTFP__
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147 // C++ compiler generates soft float instructions as well as passing
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148 // float and double in registers.
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149 static int fcmpl(float x, float y);
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150 static int fcmpg(float x, float y);
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151 static int dcmpl(double x, double y);
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152 static int dcmpg(double x, double y);
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153
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154 static int unordered_fcmplt(float x, float y);
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155 static int unordered_dcmplt(double x, double y);
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156 static int unordered_fcmple(float x, float y);
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157 static int unordered_dcmple(double x, double y);
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158 static int unordered_fcmpge(float x, float y);
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159 static int unordered_dcmpge(double x, double y);
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160 static int unordered_fcmpgt(float x, float y);
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161 static int unordered_dcmpgt(double x, double y);
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162
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163 static float fneg(float f);
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164 static double dneg(double f);
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165 #endif
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166
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167 // exception handling across interpreter/compiler boundaries
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168 static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address);
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169 static address exception_handler_for_return_address(JavaThread* thread, address return_address);
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170
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171 #ifndef SERIALGC
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172 // G1 write barriers
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173 static void g1_wb_pre(oopDesc* orig, JavaThread *thread);
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174 static void g1_wb_post(void* card_addr, JavaThread* thread);
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175 #endif // !SERIALGC
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176
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177 // exception handling and implicit exceptions
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178 static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception,
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179 bool force_unwind, bool top_frame_only);
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180 enum ImplicitExceptionKind {
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181 IMPLICIT_NULL,
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182 IMPLICIT_DIVIDE_BY_ZERO,
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183 STACK_OVERFLOW
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184 };
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185 static void throw_AbstractMethodError(JavaThread* thread);
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186 static void throw_IncompatibleClassChangeError(JavaThread* thread);
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187 static void throw_ArithmeticException(JavaThread* thread);
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188 static void throw_NullPointerException(JavaThread* thread);
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189 static void throw_NullPointerException_at_call(JavaThread* thread);
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190 static void throw_StackOverflowError(JavaThread* thread);
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191 static address continuation_for_implicit_exception(JavaThread* thread,
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192 address faulting_pc,
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193 ImplicitExceptionKind exception_kind);
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194 #ifdef GRAAL
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195 static address deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason);
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196 #endif
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197
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198 // Shared stub locations
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199 static address get_poll_stub(address pc);
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200
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201 static address get_ic_miss_stub() {
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202 assert(_ic_miss_blob!= NULL, "oops");
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203 return _ic_miss_blob->entry_point();
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204 }
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205
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206 static address get_handle_wrong_method_stub() {
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207 assert(_wrong_method_blob!= NULL, "oops");
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208 return _wrong_method_blob->entry_point();
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209 }
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210
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211 #ifdef COMPILER2
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212 static void generate_uncommon_trap_blob(void);
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213 static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; }
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214 #endif // COMPILER2
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215
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216 static address get_resolve_opt_virtual_call_stub(){
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217 assert(_resolve_opt_virtual_call_blob != NULL, "oops");
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218 return _resolve_opt_virtual_call_blob->entry_point();
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219 }
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220 static address get_resolve_virtual_call_stub() {
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221 assert(_resolve_virtual_call_blob != NULL, "oops");
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222 return _resolve_virtual_call_blob->entry_point();
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223 }
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224 static address get_resolve_static_call_stub() {
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225 assert(_resolve_static_call_blob != NULL, "oops");
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226 return _resolve_static_call_blob->entry_point();
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227 }
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228
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229 static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; }
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230 static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; }
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231 static SafepointBlob* polling_page_vectors_safepoint_handler_blob() { return _polling_page_vectors_safepoint_handler_blob; }
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232
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233 // Counters
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234 #ifndef PRODUCT
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235 static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; }
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236 #endif // PRODUCT
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237
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238 // Helper routine for full-speed JVMTI exception throwing support
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239 static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception);
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240 static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL);
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241
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242 // RedefineClasses() tracing support for obsolete method entry
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243 static int rc_trace_method_entry(JavaThread* thread, Method* m);
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244
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245 // To be used as the entry point for unresolved native methods.
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246 static address native_method_throw_unsatisfied_link_error_entry();
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247 static address native_method_throw_unsupported_operation_exception_entry();
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248
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249 // bytecode tracing is only used by the TraceBytecodes
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250 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0;
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251
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252 // Used to back off a spin lock that is under heavy contention
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253 static void yield_all(JavaThread* thread, int attempts = 0);
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254
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255 static oop retrieve_receiver( Symbol* sig, frame caller );
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256
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257 static void register_finalizer(JavaThread* thread, oopDesc* obj);
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258
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259 // dtrace notifications
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260 static int dtrace_object_alloc(oopDesc* o);
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261 static int dtrace_object_alloc_base(Thread* thread, oopDesc* o);
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262 static int dtrace_method_entry(JavaThread* thread, Method* m);
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263 static int dtrace_method_exit(JavaThread* thread, Method* m);
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264
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265 // Utility method for retrieving the Java thread id, returns 0 if the
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266 // thread is not a well formed Java thread.
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267 static jlong get_java_tid(Thread* thread);
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268
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269
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270 // used by native wrappers to reenable yellow if overflow happened in native code
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271 static void reguard_yellow_pages();
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272
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273 /**
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274 * Fill in the "X cannot be cast to a Y" message for ClassCastException
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275 *
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276 * @param thr the current thread
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277 * @param name the name of the class of the object attempted to be cast
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278 * @return the dynamically allocated exception message (must be freed
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279 * by the caller using a resource mark)
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280 *
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281 * BCP must refer to the current 'checkcast' opcode for the frame
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282 * on top of the stack.
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283 * The caller (or one of it's callers) must use a ResourceMark
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284 * in order to correctly free the result.
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285 */
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286 static char* generate_class_cast_message(JavaThread* thr, const char* name);
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287
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288 /**
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289 * Fill in the "X cannot be cast to a Y" message for ClassCastException
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290 *
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291 * @param name the name of the class of the object attempted to be cast
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292 * @param klass the name of the target klass attempt
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293 * @param gripe the specific kind of problem being reported
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294 * @return the dynamically allocated exception message (must be freed
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295 * by the caller using a resource mark)
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296 *
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297 * This version does not require access the frame, so it can be called
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298 * from interpreted code
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299 * The caller (or one of it's callers) must use a ResourceMark
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300 * in order to correctly free the result.
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301 */
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302 static char* generate_class_cast_message(const char* name, const char* klass,
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303 const char* gripe = " cannot be cast to ");
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304
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305 // Resolves a call site- may patch in the destination of the call into the
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306 // compiled code.
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307 static methodHandle resolve_helper(JavaThread *thread,
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308 bool is_virtual,
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309 bool is_optimized, TRAPS);
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310
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311 private:
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312 // deopt blob
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313 static void generate_deopt_blob(void);
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314
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315 public:
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316 static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; }
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317
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318 // Resets a call-site in compiled code so it will get resolved again.
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319 static methodHandle reresolve_call_site(JavaThread *thread, TRAPS);
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320
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321 // In the code prolog, if the klass comparison fails, the inline cache
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322 // misses and the call site is patched to megamorphic
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323 static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS);
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324
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325 // Find the method that called us.
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326 static methodHandle find_callee_method(JavaThread* thread, TRAPS);
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327
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328
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329 private:
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330 static Handle find_callee_info(JavaThread* thread,
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331 Bytecodes::Code& bc,
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332 CallInfo& callinfo, TRAPS);
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333 static Handle find_callee_info_helper(JavaThread* thread,
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334 vframeStream& vfst,
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335 Bytecodes::Code& bc,
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336 CallInfo& callinfo, TRAPS);
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337
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338 static address clean_virtual_call_entry();
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339 static address clean_opt_virtual_call_entry();
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340 static address clean_static_call_entry();
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341
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342 public:
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343
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344 // Read the array of BasicTypes from a Java signature, and compute where
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345 // compiled Java code would like to put the results. Values in reg_lo and
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346 // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are
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347 // registers, those above refer to 4-byte stack slots. All stack slots are
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348 // based off of the window top. SharedInfo::stack0 refers to the first usable
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349 // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word
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350 // 4-bytes higher. So for sparc because the register window save area is at
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351 // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0
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352 // will be just above it. (
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353 // return value is the maximum number of VMReg stack slots the convention will use.
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354 static int java_calling_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed, int is_outgoing);
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355
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356 static void check_member_name_argument_is_last_argument(methodHandle method,
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357 const BasicType* sig_bt,
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358 const VMRegPair* regs) NOT_DEBUG_RETURN;
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359
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360 // Ditto except for calling C
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361 static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed);
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362
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363 // Generate I2C and C2I adapters. These adapters are simple argument marshalling
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364 // blobs. Unlike adapters in the tiger and earlier releases the code in these
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365 // blobs does not create a new frame and are therefore virtually invisible
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366 // to the stack walking code. In general these blobs extend the callers stack
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367 // as needed for the conversion of argument locations.
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368
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369 // When calling a c2i blob the code will always call the interpreter even if
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370 // by the time we reach the blob there is compiled code available. This allows
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371 // the blob to pass the incoming stack pointer (the sender sp) in a known
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372 // location for the interpreter to record. This is used by the frame code
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373 // to correct the sender code to match up with the stack pointer when the
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374 // thread left the compiled code. In addition it allows the interpreter
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375 // to remove the space the c2i adapter allocated to do it argument conversion.
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376
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377 // Although a c2i blob will always run interpreted even if compiled code is
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378 // present if we see that compiled code is present the compiled call site
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379 // will be patched/re-resolved so that later calls will run compiled.
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380
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381 // Aditionally a c2i blob need to have a unverified entry because it can be reached
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382 // in situations where the call site is an inlined cache site and may go megamorphic.
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383
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384 // A i2c adapter is simpler than the c2i adapter. This is because it is assumed
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385 // that the interpreter before it does any call dispatch will record the current
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386 // stack pointer in the interpreter frame. On return it will restore the stack
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387 // pointer as needed. This means the i2c adapter code doesn't need any special
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388 // handshaking path with compiled code to keep the stack walking correct.
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389
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390 static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm,
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391 int total_args_passed,
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392 int max_arg,
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393 const BasicType *sig_bt,
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394 const VMRegPair *regs,
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
never
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395 AdapterFingerPrint* fingerprint);
0
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396
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397 // OSR support
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398
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399 // OSR_migration_begin will extract the jvm state from an interpreter
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400 // frame (locals, monitors) and store the data in a piece of C heap
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401 // storage. This then allows the interpreter frame to be removed from the
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402 // stack and the OSR nmethod to be called. That method is called with a
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403 // pointer to the C heap storage. This pointer is the return value from
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404 // OSR_migration_begin.
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405
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406 static intptr_t* OSR_migration_begin( JavaThread *thread);
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407
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408 // OSR_migration_end is a trivial routine. It is called after the compiled
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409 // method has extracted the jvm state from the C heap that OSR_migration_begin
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410 // created. It's entire job is to simply free this storage.
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411 static void OSR_migration_end ( intptr_t* buf);
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412
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413 // Convert a sig into a calling convention register layout
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414 // and find interesting things about it.
2177
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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415 static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, int *arg_size);
0
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416 static VMReg name_for_receiver();
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417
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418 // "Top of Stack" slots that may be unused by the calling convention but must
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419 // otherwise be preserved.
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420 // On Intel these are not necessary and the value can be zero.
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421 // On Sparc this describes the words reserved for storing a register window
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422 // when an interrupt occurs.
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423 static uint out_preserve_stack_slots();
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424
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425 // 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
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426 // For example, on x86 16 bytes XMM registers are saved by default.
137868b7aa6f 7196199: java/text/Bidi/Bug6665028.java failed: Bidi run count incorrect
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427 static bool is_wide_vector(int size);
137868b7aa6f 7196199: java/text/Bidi/Bug6665028.java failed: Bidi run count incorrect
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428
0
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429 // Save and restore a native result
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430 static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
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431 static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
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432
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433 // Generate a native wrapper for a given method. The method takes arguments
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434 // in the Java compiled code convention, marshals them to the native
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435 // convention (handlizes oops, etc), transitions to native, makes the call,
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436 // returns to java state (possibly blocking), unhandlizes any result and
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437 // returns.
6266
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twisti
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438 //
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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439 // 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
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440 // 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
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441 // such as _invokeBasic, _linkToVirtual, etc.
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442 static nmethod* generate_native_wrapper(MacroAssembler* masm,
0
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443 methodHandle method,
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3d58a4983660 7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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444 int compile_id,
6790
2cb2f30450c7 7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
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445 BasicType* sig_bt,
2cb2f30450c7 7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
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446 VMRegPair* regs,
0
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447 BasicType ret_type );
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448
4873
0382d2b469b2 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 3908
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449 // Block before entering a JNI critical method
0382d2b469b2 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 3908
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450 static void block_for_jni_critical(JavaThread* thread);
0382d2b469b2 7013347: allow crypto functions to be called inline to enhance performance
never
parents: 3908
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451
116
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
452 #ifdef HAVE_DTRACE_H
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
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453 // 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
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454 // 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
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455 // 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
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456 // returns to java state (possibly blocking), unhandlizes any result and
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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457 // returns.
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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458 static nmethod *generate_dtrace_nmethod(MacroAssembler* masm,
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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459 methodHandle method);
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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460
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents: 16
diff changeset
461 // dtrace support to convert a Java string to utf8
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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462 static void get_utf(oopDesc* src, address dst);
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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463 #endif // def HAVE_DTRACE_H
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kamg
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464
0
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465 // A compiled caller has just called the interpreter, but compiled code
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466 // exists. Patch the caller so he no longer calls into the interpreter.
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da91efe96a93 6964458: Reimplement class meta-data storage to use native memory
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467 static void fixup_callers_callsite(Method* moop, address ret_pc);
0
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468
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469 // Slow-path Locking and Unlocking
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470 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
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471 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
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472
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473 // Resolving of calls
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474 static address resolve_static_call_C (JavaThread *thread);
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475 static address resolve_virtual_call_C (JavaThread *thread);
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476 static address resolve_opt_virtual_call_C(JavaThread *thread);
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477
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478 // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.)
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479 static void slow_arraycopy_C(oopDesc* src, jint src_pos,
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480 oopDesc* dest, jint dest_pos,
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481 jint length, JavaThread* thread);
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482
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483 // handle ic miss with caller being compiled code
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484 // wrong method handling (inline cache misses, zombie methods)
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485 static address handle_wrong_method(JavaThread* thread);
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486 static address handle_wrong_method_ic_miss(JavaThread* thread);
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487
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488 #ifndef PRODUCT
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489
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490 // Collect and print inline cache miss statistics
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491 private:
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492 enum { maxICmiss_count = 100 };
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493 static int _ICmiss_index; // length of IC miss histogram
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494 static int _ICmiss_count[maxICmiss_count]; // miss counts
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495 static address _ICmiss_at[maxICmiss_count]; // miss addresses
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496 static void trace_ic_miss(address at);
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497
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498 public:
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499 static int _monitor_enter_ctr; // monitor enter slow
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500 static int _monitor_exit_ctr; // monitor exit slow
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501 static int _throw_null_ctr; // throwing a null-pointer exception
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502 static int _ic_miss_ctr; // total # of IC misses
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503 static int _wrong_method_ctr;
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504 static int _resolve_static_ctr;
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505 static int _resolve_virtual_ctr;
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506 static int _resolve_opt_virtual_ctr;
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507 static int _implicit_null_throws;
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508 static int _implicit_div0_throws;
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509
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510 static int _jbyte_array_copy_ctr; // Slow-path byte array copy
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511 static int _jshort_array_copy_ctr; // Slow-path short array copy
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512 static int _jint_array_copy_ctr; // Slow-path int array copy
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513 static int _jlong_array_copy_ctr; // Slow-path long array copy
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514 static int _oop_array_copy_ctr; // Slow-path oop array copy
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515 static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast
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516 static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks
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517 static int _generic_array_copy_ctr; // Slow-path includes type decoding
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518 static int _slow_array_copy_ctr; // Slow-path failed out to a method call
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519
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520 static int _new_instance_ctr; // 'new' object requires GC
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521 static int _new_array_ctr; // 'new' array requires GC
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522 static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr;
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523 static int _find_handler_ctr; // find exception handler
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524 static int _rethrow_ctr; // rethrow exception
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525 static int _mon_enter_stub_ctr; // monitor enter stub
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526 static int _mon_exit_stub_ctr; // monitor exit stub
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527 static int _mon_enter_ctr; // monitor enter slow
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528 static int _mon_exit_ctr; // monitor exit slow
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529 static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check
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530
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531 // Statistics code
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532 // stats for "normal" compiled calls (non-interface)
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533 static int _nof_normal_calls; // total # of calls
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534 static int _nof_optimized_calls; // total # of statically-bound calls
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535 static int _nof_inlined_calls; // total # of inlined normal calls
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536 static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial)
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537 static int _nof_inlined_static_calls; // total # of inlined static calls
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538 // stats for compiled interface calls
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539 static int _nof_interface_calls; // total # of compiled calls
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540 static int _nof_optimized_interface_calls; // total # of statically-bound interface calls
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541 static int _nof_inlined_interface_calls; // total # of inlined interface calls
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542 static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls
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543 // stats for runtime exceptions
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544 static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining
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545
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546 public: // for compiler
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547 static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; }
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548 static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; }
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549 static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; }
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550 static address nof_static_calls_addr() { return (address)&_nof_static_calls; }
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551 static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; }
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552 static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; }
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553 static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; }
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554 static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; }
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555 static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; }
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556 static void print_call_statistics(int comp_total);
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557 static void print_statistics();
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558 static void print_ic_miss_histogram();
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559
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560 #endif // PRODUCT
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561 };
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562
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563
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564 // ---------------------------------------------------------------------------
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565 // Implementation of AdapterHandlerLibrary
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566 //
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567 // This library manages argument marshaling adapters and native wrappers.
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568 // There are 2 flavors of adapters: I2C and C2I.
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569 //
1748
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parents: 1681
diff changeset
570 // The I2C flavor takes a stock interpreted call setup, marshals the
3e8fbc61cee8 6978355: renaming for 6961697
twisti
parents: 1681
diff changeset
571 // arguments for a Java-compiled call, and jumps to Rmethod-> code()->
3e8fbc61cee8 6978355: renaming for 6961697
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parents: 1681
diff changeset
572 // code_begin(). It is broken to call it without an nmethod assigned.
3e8fbc61cee8 6978355: renaming for 6961697
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parents: 1681
diff changeset
573 // The usual behavior is to lift any register arguments up out of the
3e8fbc61cee8 6978355: renaming for 6961697
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parents: 1681
diff changeset
574 // stack and possibly re-pack the extra arguments to be contigious.
3e8fbc61cee8 6978355: renaming for 6961697
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parents: 1681
diff changeset
575 // I2C adapters will save what the interpreter's stack pointer will be
3e8fbc61cee8 6978355: renaming for 6961697
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parents: 1681
diff changeset
576 // after arguments are popped, then adjust the interpreter's frame
3e8fbc61cee8 6978355: renaming for 6961697
twisti
parents: 1681
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577 // size to force alignment and possibly to repack the arguments.
3e8fbc61cee8 6978355: renaming for 6961697
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parents: 1681
diff changeset
578 // After re-packing, it jumps to the compiled code start. There are
3e8fbc61cee8 6978355: renaming for 6961697
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parents: 1681
diff changeset
579 // no safepoints in this adapter code and a GC cannot happen while
3e8fbc61cee8 6978355: renaming for 6961697
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diff changeset
580 // marshaling is in progress.
0
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581 //
a61af66fc99e Initial load
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parents:
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582 // The C2I flavor takes a stock compiled call setup plus the target method in
a61af66fc99e Initial load
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parents:
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583 // Rmethod, marshals the arguments for an interpreted call and jumps to
a61af66fc99e Initial load
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parents:
diff changeset
584 // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been
a61af66fc99e Initial load
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585 // setup. Compiled frames are fixed-size and the args are likely not in the
a61af66fc99e Initial load
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parents:
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586 // right place. Hence all the args will likely be copied into the
a61af66fc99e Initial load
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parents:
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587 // interpreter's frame, forcing that frame to grow. The compiled frame's
a61af66fc99e Initial load
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parents:
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588 // outgoing stack args will be dead after the copy.
a61af66fc99e Initial load
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589 //
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parents:
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590 // Native wrappers, like adapters, marshal arguments. Unlike adapters they
a61af66fc99e Initial load
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parents:
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591 // also perform an offical frame push & pop. They have a call to the native
a61af66fc99e Initial load
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parents:
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592 // routine in their middles and end in a return (instead of ending in a jump).
a61af66fc99e Initial load
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parents:
diff changeset
593 // The native wrappers are stored in real nmethods instead of the BufferBlobs
a61af66fc99e Initial load
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parents:
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594 // used by the adapters. The code generation happens here because it's very
a61af66fc99e Initial load
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parents:
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595 // similar to what the adapters have to do.
a61af66fc99e Initial load
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596
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d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1)
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597 class AdapterHandlerEntry : public BasicHashtableEntry<mtCode> {
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598 friend class AdapterHandlerTable;
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599
0
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600 private:
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parents: 1138
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601 AdapterFingerPrint* _fingerprint;
0
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602 address _i2c_entry;
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603 address _c2i_entry;
a61af66fc99e Initial load
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parents:
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604 address _c2i_unverified_entry;
a61af66fc99e Initial load
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605
1207
74c848d437ab 6921922: fix for 6911204 breaks tagged stack interpreter
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parents: 1187
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606 #ifdef ASSERT
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parents: 1187
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607 // Captures code and signature used to generate this adapter when
74c848d437ab 6921922: fix for 6911204 breaks tagged stack interpreter
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parents: 1187
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608 // verifing adapter equivalence.
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parents: 1187
diff changeset
609 unsigned char* _saved_code;
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parents: 1187
diff changeset
610 int _code_length;
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parents: 1187
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611 BasicType* _saved_sig;
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612 int _total_args_passed;
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parents: 1187
diff changeset
613 #endif
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parents: 1187
diff changeset
614
1187
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diff changeset
615 void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) {
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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parents: 1138
diff changeset
616 _fingerprint = fingerprint;
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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parents: 1138
diff changeset
617 _i2c_entry = i2c_entry;
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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parents: 1138
diff changeset
618 _c2i_entry = c2i_entry;
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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parents: 1138
diff changeset
619 _c2i_unverified_entry = c2i_unverified_entry;
1207
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parents: 1187
diff changeset
620 #ifdef ASSERT
74c848d437ab 6921922: fix for 6911204 breaks tagged stack interpreter
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621 _saved_code = NULL;
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622 _code_length = 0;
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623 _saved_sig = NULL;
74c848d437ab 6921922: fix for 6911204 breaks tagged stack interpreter
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624 _total_args_passed = 0;
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diff changeset
625 #endif
1187
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626 }
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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diff changeset
627
1207
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628 void deallocate();
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diff changeset
629
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630 // should never be used
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diff changeset
631 AdapterHandlerEntry();
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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632
0
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633 public:
6266
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634 address get_i2c_entry() const { return _i2c_entry; }
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635 address get_c2i_entry() const { return _c2i_entry; }
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diff changeset
636 address get_c2i_unverified_entry() const { return _c2i_unverified_entry; }
116
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kamg
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diff changeset
637
6266
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638 address base_address();
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639 void relocate(address new_base);
1187
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diff changeset
640
6266
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641 AdapterFingerPrint* fingerprint() const { return _fingerprint; }
1187
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diff changeset
642
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643 AdapterHandlerEntry* next() {
6197
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1)
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644 return (AdapterHandlerEntry*)BasicHashtableEntry<mtCode>::next();
1187
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645 }
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diff changeset
646
1207
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diff changeset
647 #ifdef ASSERT
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648 // Used to verify that code generated for shared adapters is equivalent
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649 void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt);
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diff changeset
650 bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt);
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diff changeset
651 #endif
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diff changeset
652
6266
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653 //virtual void print_on(outputStream* st) const; DO NOT USE
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code
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654 void print_adapter_on(outputStream* st) const;
0
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655 };
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656
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parents:
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657 class AdapterHandlerLibrary: public AllStatic {
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diff changeset
658 private:
742
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diff changeset
659 static BufferBlob* _buffer; // the temporary code buffer in CodeCache
1187
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diff changeset
660 static AdapterHandlerTable* _adapters;
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diff changeset
661 static AdapterHandlerEntry* _abstract_method_handler;
742
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diff changeset
662 static BufferBlob* buffer_blob();
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663 static void initialize();
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664
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parents:
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665 public:
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parents: 1138
diff changeset
666
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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diff changeset
667 static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint,
cf0685d550f1 6911204: generated adapters with large signatures can fill up the code cache
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diff changeset
668 address i2c_entry, address c2i_entry, address c2i_unverified_entry);
2405
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twisti
parents: 2177
diff changeset
669 static nmethod* create_native_wrapper(methodHandle method, int compile_id);
1187
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diff changeset
670 static AdapterHandlerEntry* get_adapter(methodHandle method);
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diff changeset
671
116
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diff changeset
672 #ifdef HAVE_DTRACE_H
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diff changeset
673 static nmethod* create_dtrace_nmethod (methodHandle method);
018d5b58dd4f 6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff changeset
674 #endif // HAVE_DTRACE_H
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diff changeset
675
1681
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parents: 1552
diff changeset
676 static void print_handler(CodeBlob* b) { print_handler_on(tty, b); }
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diff changeset
677 static void print_handler_on(outputStream* st, CodeBlob* b);
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diff changeset
678 static bool contains(CodeBlob* b);
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diff changeset
679 #ifndef PRODUCT
1187
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diff changeset
680 static void print_statistics();
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681 #endif /* PRODUCT */
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682
a61af66fc99e Initial load
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683 };
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1868
diff changeset
684
f95d63e2154a 6989984: Use standard include model for Hospot
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diff changeset
685 #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP