Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 4873:0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
Reviewed-by: kvn
| author | never |
|---|---|
| date | Wed, 01 Feb 2012 16:57:08 -0800 |
| parents | aa3d708d67c4 |
| children | 09d00c18e323 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "code/compiledIC.hpp" | |
| 29 #include "code/scopeDesc.hpp" | |
| 30 #include "code/vtableStubs.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
| 32 #include "compiler/compileBroker.hpp" | |
| 33 #include "compiler/compilerOracle.hpp" | |
| 34 #include "interpreter/interpreter.hpp" | |
| 35 #include "interpreter/interpreterRuntime.hpp" | |
| 36 #include "memory/gcLocker.inline.hpp" | |
| 37 #include "memory/universe.inline.hpp" | |
| 38 #include "oops/oop.inline.hpp" | |
| 39 #include "prims/forte.hpp" | |
| 40 #include "prims/jvmtiExport.hpp" | |
| 41 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
| 42 #include "prims/methodHandles.hpp" | |
| 43 #include "prims/nativeLookup.hpp" | |
| 44 #include "runtime/arguments.hpp" | |
| 45 #include "runtime/biasedLocking.hpp" | |
| 46 #include "runtime/handles.inline.hpp" | |
| 47 #include "runtime/init.hpp" | |
| 48 #include "runtime/interfaceSupport.hpp" | |
| 49 #include "runtime/javaCalls.hpp" | |
| 50 #include "runtime/sharedRuntime.hpp" | |
| 51 #include "runtime/stubRoutines.hpp" | |
| 52 #include "runtime/vframe.hpp" | |
| 53 #include "runtime/vframeArray.hpp" | |
| 54 #include "utilities/copy.hpp" | |
| 55 #include "utilities/dtrace.hpp" | |
| 56 #include "utilities/events.hpp" | |
| 57 #include "utilities/hashtable.inline.hpp" | |
| 58 #include "utilities/xmlstream.hpp" | |
| 59 #ifdef TARGET_ARCH_x86 | |
| 60 # include "nativeInst_x86.hpp" | |
| 61 # include "vmreg_x86.inline.hpp" | |
| 62 #endif | |
| 63 #ifdef TARGET_ARCH_sparc | |
| 64 # include "nativeInst_sparc.hpp" | |
| 65 # include "vmreg_sparc.inline.hpp" | |
| 66 #endif | |
| 67 #ifdef TARGET_ARCH_zero | |
| 68 # include "nativeInst_zero.hpp" | |
| 69 # include "vmreg_zero.inline.hpp" | |
| 70 #endif | |
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71 #ifdef TARGET_ARCH_arm |
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72 # include "nativeInst_arm.hpp" |
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73 # include "vmreg_arm.inline.hpp" |
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74 #endif |
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75 #ifdef TARGET_ARCH_ppc |
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76 # include "nativeInst_ppc.hpp" |
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77 # include "vmreg_ppc.inline.hpp" |
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78 #endif |
| 1972 | 79 #ifdef COMPILER1 |
| 80 #include "c1/c1_Runtime1.hpp" | |
| 81 #endif | |
| 82 | |
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83 // Shared stub locations |
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84 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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85 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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86 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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87 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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88 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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89 |
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90 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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91 RicochetBlob* SharedRuntime::_ricochet_blob; |
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92 |
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93 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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94 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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95 |
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96 #ifdef COMPILER2 |
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97 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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98 #endif // COMPILER2 |
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99 |
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100 |
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101 //----------------------------generate_stubs----------------------------------- |
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102 void SharedRuntime::generate_stubs() { |
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103 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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104 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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105 _resolve_opt_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_opt_virtual_call_C), "resolve_opt_virtual_call"); |
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106 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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107 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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108 |
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109 _polling_page_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), false); |
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110 _polling_page_return_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), true); |
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111 |
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112 generate_ricochet_blob(); |
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113 generate_deopt_blob(); |
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114 |
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115 #ifdef COMPILER2 |
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116 generate_uncommon_trap_blob(); |
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117 #endif // COMPILER2 |
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118 } |
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119 |
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120 //----------------------------generate_ricochet_blob--------------------------- |
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121 void SharedRuntime::generate_ricochet_blob() { |
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122 if (!EnableInvokeDynamic) return; // leave it as a null |
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123 |
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124 // allocate space for the code |
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125 ResourceMark rm; |
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126 // setup code generation tools |
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127 CodeBuffer buffer("ricochet_blob", 256 LP64_ONLY(+ 256), 256); // XXX x86 LP64L: 512, 512 |
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128 MacroAssembler* masm = new MacroAssembler(&buffer); |
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129 |
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130 int bounce_offset = -1, exception_offset = -1, frame_size_in_words = -1; |
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131 MethodHandles::RicochetFrame::generate_ricochet_blob(masm, &bounce_offset, &exception_offset, &frame_size_in_words); |
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132 |
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133 // ------------- |
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134 // make sure all code is generated |
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135 masm->flush(); |
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136 |
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137 // failed to generate? |
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138 if (bounce_offset < 0 || exception_offset < 0 || frame_size_in_words < 0) { |
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139 assert(false, "bad ricochet blob"); |
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140 return; |
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141 } |
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142 |
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143 _ricochet_blob = RicochetBlob::create(&buffer, bounce_offset, exception_offset, frame_size_in_words); |
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144 } |
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145 |
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146 |
| 0 | 147 #include <math.h> |
| 148 | |
| 4006 | 149 #ifndef USDT2 |
| 0 | 150 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
| 151 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 152 char*, int, char*, int, char*, int); | |
| 153 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 154 char*, int, char*, int, char*, int); | |
| 4006 | 155 #endif /* !USDT2 */ |
| 0 | 156 |
| 157 // Implementation of SharedRuntime | |
| 158 | |
| 159 #ifndef PRODUCT | |
| 160 // For statistics | |
| 161 int SharedRuntime::_ic_miss_ctr = 0; | |
| 162 int SharedRuntime::_wrong_method_ctr = 0; | |
| 163 int SharedRuntime::_resolve_static_ctr = 0; | |
| 164 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 165 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 166 int SharedRuntime::_implicit_null_throws = 0; | |
| 167 int SharedRuntime::_implicit_div0_throws = 0; | |
| 168 int SharedRuntime::_throw_null_ctr = 0; | |
| 169 | |
| 170 int SharedRuntime::_nof_normal_calls = 0; | |
| 171 int SharedRuntime::_nof_optimized_calls = 0; | |
| 172 int SharedRuntime::_nof_inlined_calls = 0; | |
| 173 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 174 int SharedRuntime::_nof_static_calls = 0; | |
| 175 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 176 int SharedRuntime::_nof_interface_calls = 0; | |
| 177 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 178 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 179 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 180 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 181 | |
| 182 int SharedRuntime::_new_instance_ctr=0; | |
| 183 int SharedRuntime::_new_array_ctr=0; | |
| 184 int SharedRuntime::_multi1_ctr=0; | |
| 185 int SharedRuntime::_multi2_ctr=0; | |
| 186 int SharedRuntime::_multi3_ctr=0; | |
| 187 int SharedRuntime::_multi4_ctr=0; | |
| 188 int SharedRuntime::_multi5_ctr=0; | |
| 189 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 190 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 191 int SharedRuntime::_mon_enter_ctr=0; | |
| 192 int SharedRuntime::_mon_exit_ctr=0; | |
| 193 int SharedRuntime::_partial_subtype_ctr=0; | |
| 194 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 195 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 196 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 197 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 198 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 199 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 200 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 201 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 202 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 203 int SharedRuntime::_find_handler_ctr=0; | |
| 204 int SharedRuntime::_rethrow_ctr=0; | |
| 205 | |
| 206 int SharedRuntime::_ICmiss_index = 0; | |
| 207 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 208 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 209 | |
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210 |
| 0 | 211 void SharedRuntime::trace_ic_miss(address at) { |
| 212 for (int i = 0; i < _ICmiss_index; i++) { | |
| 213 if (_ICmiss_at[i] == at) { | |
| 214 _ICmiss_count[i]++; | |
| 215 return; | |
| 216 } | |
| 217 } | |
| 218 int index = _ICmiss_index++; | |
| 219 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 220 _ICmiss_at[index] = at; | |
| 221 _ICmiss_count[index] = 1; | |
| 222 } | |
| 223 | |
| 224 void SharedRuntime::print_ic_miss_histogram() { | |
| 225 if (ICMissHistogram) { | |
| 226 tty->print_cr ("IC Miss Histogram:"); | |
| 227 int tot_misses = 0; | |
| 228 for (int i = 0; i < _ICmiss_index; i++) { | |
| 229 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 230 tot_misses += _ICmiss_count[i]; | |
| 231 } | |
| 232 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 233 } | |
| 234 } | |
| 235 #endif // PRODUCT | |
| 236 | |
|
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237 #ifndef SERIALGC |
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238 |
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239 // G1 write-barrier pre: executed before a pointer store. |
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240 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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241 if (orig == NULL) { |
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242 assert(false, "should be optimized out"); |
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243 return; |
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244 } |
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245 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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342
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246 // store the original value that was in the field reference |
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247 thread->satb_mark_queue().enqueue(orig); |
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248 JRT_END |
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249 |
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250 // G1 write-barrier post: executed after a pointer store. |
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251 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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252 thread->dirty_card_queue().enqueue(card_addr); |
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253 JRT_END |
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254 |
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255 #endif // !SERIALGC |
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256 |
| 0 | 257 |
| 258 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
| 259 return x * y; | |
| 260 JRT_END | |
| 261 | |
| 262 | |
| 263 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
| 264 if (x == min_jlong && y == CONST64(-1)) { | |
| 265 return x; | |
| 266 } else { | |
| 267 return x / y; | |
| 268 } | |
| 269 JRT_END | |
| 270 | |
| 271 | |
| 272 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
| 273 if (x == min_jlong && y == CONST64(-1)) { | |
| 274 return 0; | |
| 275 } else { | |
| 276 return x % y; | |
| 277 } | |
| 278 JRT_END | |
| 279 | |
| 280 | |
| 281 const juint float_sign_mask = 0x7FFFFFFF; | |
| 282 const juint float_infinity = 0x7F800000; | |
| 283 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
| 284 const julong double_infinity = CONST64(0x7FF0000000000000); | |
| 285 | |
| 286 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
| 287 #ifdef _WIN64 | |
| 288 // 64-bit Windows on amd64 returns the wrong values for | |
| 289 // infinity operands. | |
| 290 union { jfloat f; juint i; } xbits, ybits; | |
| 291 xbits.f = x; | |
| 292 ybits.f = y; | |
| 293 // x Mod Infinity == x unless x is infinity | |
| 294 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
| 295 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
| 296 return x; | |
| 297 } | |
| 298 #endif | |
| 299 return ((jfloat)fmod((double)x,(double)y)); | |
| 300 JRT_END | |
| 301 | |
| 302 | |
| 303 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
| 304 #ifdef _WIN64 | |
| 305 union { jdouble d; julong l; } xbits, ybits; | |
| 306 xbits.d = x; | |
| 307 ybits.d = y; | |
| 308 // x Mod Infinity == x unless x is infinity | |
| 309 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
| 310 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
| 311 return x; | |
| 312 } | |
| 313 #endif | |
| 314 return ((jdouble)fmod((double)x,(double)y)); | |
| 315 JRT_END | |
| 316 | |
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317 #ifdef __SOFTFP__ |
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318 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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319 return x + y; |
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320 JRT_END |
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321 |
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322 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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323 return x - y; |
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324 JRT_END |
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325 |
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326 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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327 return x * y; |
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328 JRT_END |
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329 |
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330 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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331 return x / y; |
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332 JRT_END |
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333 |
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334 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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335 return x + y; |
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336 JRT_END |
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337 |
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338 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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339 return x - y; |
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340 JRT_END |
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341 |
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342 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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343 return x * y; |
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344 JRT_END |
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345 |
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346 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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347 return x / y; |
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348 JRT_END |
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349 |
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350 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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351 return (jfloat)x; |
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352 JRT_END |
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353 |
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354 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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355 return (jdouble)x; |
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356 JRT_END |
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357 |
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358 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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359 return (jdouble)x; |
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360 JRT_END |
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361 |
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362 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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363 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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364 JRT_END |
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365 |
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366 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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367 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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368 JRT_END |
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369 |
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370 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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371 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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372 JRT_END |
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373 |
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374 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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375 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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376 JRT_END |
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377 |
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378 // Functions to return the opposite of the aeabi functions for nan. |
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379 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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380 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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381 JRT_END |
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382 |
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383 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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384 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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385 JRT_END |
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386 |
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387 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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388 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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389 JRT_END |
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390 |
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391 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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392 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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393 JRT_END |
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394 |
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395 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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396 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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397 JRT_END |
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398 |
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399 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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400 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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401 JRT_END |
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402 |
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403 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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404 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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405 JRT_END |
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406 |
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407 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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408 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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409 JRT_END |
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410 |
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411 // Intrinsics make gcc generate code for these. |
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412 float SharedRuntime::fneg(float f) { |
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413 return -f; |
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414 } |
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415 |
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416 double SharedRuntime::dneg(double f) { |
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417 return -f; |
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418 } |
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419 |
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420 #endif // __SOFTFP__ |
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421 |
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422 #if defined(__SOFTFP__) || defined(E500V2) |
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423 // Intrinsics make gcc generate code for these. |
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424 double SharedRuntime::dabs(double f) { |
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425 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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426 } |
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427 |
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428 #endif |
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429 |
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430 #if defined(__SOFTFP__) || defined(PPC) |
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431 double SharedRuntime::dsqrt(double f) { |
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432 return sqrt(f); |
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433 } |
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434 #endif |
| 0 | 435 |
| 436 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
|
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437 if (g_isnan(x)) |
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438 return 0; |
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439 if (x >= (jfloat) max_jint) |
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440 return max_jint; |
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441 if (x <= (jfloat) min_jint) |
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442 return min_jint; |
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443 return (jint) x; |
| 0 | 444 JRT_END |
| 445 | |
| 446 | |
| 447 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
|
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448 if (g_isnan(x)) |
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449 return 0; |
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450 if (x >= (jfloat) max_jlong) |
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451 return max_jlong; |
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452 if (x <= (jfloat) min_jlong) |
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453 return min_jlong; |
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454 return (jlong) x; |
| 0 | 455 JRT_END |
| 456 | |
| 457 | |
| 458 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
|
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459 if (g_isnan(x)) |
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460 return 0; |
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461 if (x >= (jdouble) max_jint) |
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462 return max_jint; |
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463 if (x <= (jdouble) min_jint) |
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464 return min_jint; |
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465 return (jint) x; |
| 0 | 466 JRT_END |
| 467 | |
| 468 | |
| 469 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
|
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470 if (g_isnan(x)) |
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471 return 0; |
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472 if (x >= (jdouble) max_jlong) |
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473 return max_jlong; |
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474 if (x <= (jdouble) min_jlong) |
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475 return min_jlong; |
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476 return (jlong) x; |
| 0 | 477 JRT_END |
| 478 | |
| 479 | |
| 480 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
| 481 return (jfloat)x; | |
| 482 JRT_END | |
| 483 | |
| 484 | |
| 485 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
| 486 return (jfloat)x; | |
| 487 JRT_END | |
| 488 | |
| 489 | |
| 490 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
| 491 return (jdouble)x; | |
| 492 JRT_END | |
| 493 | |
| 494 // Exception handling accross interpreter/compiler boundaries | |
| 495 // | |
| 496 // exception_handler_for_return_address(...) returns the continuation address. | |
| 497 // The continuation address is the entry point of the exception handler of the | |
| 498 // previous frame depending on the return address. | |
| 499 | |
| 1295 | 500 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
|
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501 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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502 |
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503 // Reset method handle flag. |
|
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504 thread->set_is_method_handle_return(false); |
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505 |
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506 // The fastest case first |
| 0 | 507 CodeBlob* blob = CodeCache::find_blob(return_address); |
|
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508 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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509 if (nm != NULL) { |
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510 // Set flag if return address is a method handle call site. |
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511 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
| 0 | 512 // native nmethods don't have exception handlers |
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513 assert(!nm->is_native_method(), "no exception handler"); |
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514 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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515 if (nm->is_deopt_pc(return_address)) { |
| 0 | 516 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
| 517 } else { | |
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518 return nm->exception_begin(); |
| 0 | 519 } |
| 520 } | |
| 521 | |
| 522 // Entry code | |
| 523 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 524 return StubRoutines::catch_exception_entry(); | |
| 525 } | |
| 526 // Interpreted code | |
| 527 if (Interpreter::contains(return_address)) { | |
| 528 return Interpreter::rethrow_exception_entry(); | |
| 529 } | |
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530 // Ricochet frame unwind code |
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531 if (SharedRuntime::ricochet_blob() != NULL && SharedRuntime::ricochet_blob()->returns_to_bounce_addr(return_address)) { |
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532 return SharedRuntime::ricochet_blob()->exception_addr(); |
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533 } |
| 0 | 534 |
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535 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
| 0 | 536 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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537 |
| 0 | 538 #ifndef PRODUCT |
| 539 { ResourceMark rm; | |
| 540 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 541 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 542 tty->print_cr("b) other problem"); | |
| 543 } | |
| 544 #endif // PRODUCT | |
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545 |
| 0 | 546 ShouldNotReachHere(); |
| 547 return NULL; | |
| 548 } | |
| 549 | |
| 550 | |
| 1295 | 551 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 552 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 553 JRT_END |
| 554 | |
| 1295 | 555 |
| 0 | 556 address SharedRuntime::get_poll_stub(address pc) { |
| 557 address stub; | |
| 558 // Look up the code blob | |
| 559 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 560 | |
| 561 // Should be an nmethod | |
| 562 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 563 | |
| 564 // Look up the relocation information | |
| 565 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 566 "safepoint polling: type must be poll" ); | |
| 567 | |
| 568 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 569 "Only polling locations are used for safepoint"); | |
| 570 | |
| 571 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
| 572 if (at_poll_return) { | |
| 573 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 574 "polling page return stub not created yet"); | |
| 1748 | 575 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
| 0 | 576 } else { |
| 577 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 578 "polling page safepoint stub not created yet"); | |
| 1748 | 579 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 580 } |
| 581 #ifndef PRODUCT | |
| 582 if( TraceSafepoint ) { | |
| 583 char buf[256]; | |
| 584 jio_snprintf(buf, sizeof(buf), | |
| 585 "... found polling page %s exception at pc = " | |
| 586 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 587 at_poll_return ? "return" : "loop", | |
| 588 (intptr_t)pc, (intptr_t)stub); | |
| 589 tty->print_raw_cr(buf); | |
| 590 } | |
| 591 #endif // PRODUCT | |
| 592 return stub; | |
| 593 } | |
| 594 | |
| 595 | |
|
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596 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 597 assert(caller.is_interpreted_frame(), ""); |
| 598 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 599 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
| 600 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
| 601 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
| 602 return result; | |
| 603 } | |
| 604 | |
| 605 | |
| 606 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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607 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 608 vframeStream vfst(thread, true); |
| 609 methodHandle method = methodHandle(thread, vfst.method()); | |
| 610 address bcp = method()->bcp_from(vfst.bci()); | |
| 611 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 612 } | |
| 613 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 614 } | |
| 615 | |
|
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616 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 617 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 618 throw_and_post_jvmti_exception(thread, h_exception); | |
| 619 } | |
| 620 | |
|
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621 // The interpreter code to call this tracing function is only |
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622 // called/generated when TraceRedefineClasses has the right bits |
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623 // set. Since obsolete methods are never compiled, we don't have |
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624 // to modify the compilers to generate calls to this function. |
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625 // |
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626 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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627 JavaThread* thread, methodOopDesc* method)) |
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628 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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629 |
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630 if (method->is_obsolete()) { |
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631 // We are calling an obsolete method, but this is not necessarily |
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632 // an error. Our method could have been redefined just after we |
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633 // fetched the methodOop from the constant pool. |
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634 |
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635 // RC_TRACE macro has an embedded ResourceMark |
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636 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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637 ("calling obsolete method '%s'", |
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638 method->name_and_sig_as_C_string())); |
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639 if (RC_TRACE_ENABLED(0x00002000)) { |
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640 // this option is provided to debug calls to obsolete methods |
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641 guarantee(false, "faulting at call to an obsolete method."); |
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642 } |
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643 } |
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644 return 0; |
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645 JRT_END |
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646 |
| 0 | 647 // ret_pc points into caller; we are returning caller's exception handler |
| 648 // for given exception | |
| 649 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 650 bool force_unwind, bool top_frame_only) { | |
| 651 assert(nm != NULL, "must exist"); | |
| 652 ResourceMark rm; | |
| 653 | |
| 654 ScopeDesc* sd = nm->scope_desc_at(ret_pc); | |
| 655 // determine handler bci, if any | |
| 656 EXCEPTION_MARK; | |
| 657 | |
| 658 int handler_bci = -1; | |
| 659 int scope_depth = 0; | |
| 660 if (!force_unwind) { | |
| 661 int bci = sd->bci(); | |
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662 bool recursive_exception = false; |
| 0 | 663 do { |
| 664 bool skip_scope_increment = false; | |
| 665 // exception handler lookup | |
| 666 KlassHandle ek (THREAD, exception->klass()); | |
| 667 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
| 668 if (HAS_PENDING_EXCEPTION) { | |
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669 recursive_exception = true; |
| 0 | 670 // We threw an exception while trying to find the exception handler. |
| 671 // Transfer the new exception to the exception handle which will | |
| 672 // be set into thread local storage, and do another lookup for an | |
| 673 // exception handler for this exception, this time starting at the | |
| 674 // BCI of the exception handler which caused the exception to be | |
| 675 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 676 // argument to ensure that the correct exception is thrown (4870175). | |
| 677 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 678 CLEAR_PENDING_EXCEPTION; | |
| 679 if (handler_bci >= 0) { | |
| 680 bci = handler_bci; | |
| 681 handler_bci = -1; | |
| 682 skip_scope_increment = true; | |
| 683 } | |
| 684 } | |
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685 else { |
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686 recursive_exception = false; |
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687 } |
| 0 | 688 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
| 689 sd = sd->sender(); | |
| 690 if (sd != NULL) { | |
| 691 bci = sd->bci(); | |
| 692 } | |
| 693 ++scope_depth; | |
| 694 } | |
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695 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
| 0 | 696 } |
| 697 | |
| 698 // found handling method => lookup exception handler | |
| 1748 | 699 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 700 |
| 701 ExceptionHandlerTable table(nm); | |
| 702 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 703 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 704 // Allow abbreviated catch tables. The idea is to allow a method | |
| 705 // to materialize its exceptions without committing to the exact | |
| 706 // routing of exceptions. In particular this is needed for adding | |
| 707 // a synthethic handler to unlock monitors when inlining | |
| 708 // synchonized methods since the unlock path isn't represented in | |
| 709 // the bytecodes. | |
| 710 t = table.entry_for(catch_pco, -1, 0); | |
| 711 } | |
| 712 | |
|
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713 #ifdef COMPILER1 |
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714 if (t == NULL && nm->is_compiled_by_c1()) { |
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715 assert(nm->unwind_handler_begin() != NULL, ""); |
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716 return nm->unwind_handler_begin(); |
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717 } |
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718 #endif |
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719 |
| 0 | 720 if (t == NULL) { |
| 721 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 722 tty->print_cr(" Exception:"); | |
| 723 exception->print(); | |
| 724 tty->cr(); | |
| 725 tty->print_cr(" Compiled exception table :"); | |
| 726 table.print(); | |
| 727 nm->print_code(); | |
| 728 guarantee(false, "missing exception handler"); | |
| 729 return NULL; | |
| 730 } | |
| 731 | |
| 1748 | 732 return nm->code_begin() + t->pco(); |
| 0 | 733 } |
| 734 | |
| 735 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 736 // These errors occur only at call sites | |
| 737 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 738 JRT_END | |
| 739 | |
|
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740 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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741 // These errors occur only at call sites |
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742 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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743 JRT_END |
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744 |
| 0 | 745 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 746 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 747 JRT_END | |
| 748 | |
| 749 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 750 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 751 JRT_END | |
| 752 | |
| 753 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 754 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 755 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 756 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 757 JRT_END | |
| 758 | |
| 759 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 760 // We avoid using the normal exception construction in this case because | |
| 761 // it performs an upcall to Java, and we're already out of stack space. | |
| 762 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
| 763 oop exception_oop = instanceKlass::cast(k)->allocate_instance(CHECK); | |
| 764 Handle exception (thread, exception_oop); | |
| 765 if (StackTraceInThrowable) { | |
| 766 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 767 } | |
| 768 throw_and_post_jvmti_exception(thread, exception); | |
| 769 JRT_END | |
| 770 | |
|
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771 JRT_ENTRY(void, SharedRuntime::throw_WrongMethodTypeException(JavaThread* thread, oopDesc* required, oopDesc* actual)) |
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772 assert(thread == JavaThread::current() && required->is_oop() && actual->is_oop(), "bad args"); |
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773 ResourceMark rm; |
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774 char* message = SharedRuntime::generate_wrong_method_type_message(thread, required, actual); |
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775 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_invoke_WrongMethodTypeException(), message); |
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776 JRT_END |
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777 |
| 0 | 778 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
| 779 address pc, | |
| 780 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 781 { | |
| 782 address target_pc = NULL; | |
| 783 | |
| 784 if (Interpreter::contains(pc)) { | |
| 785 #ifdef CC_INTERP | |
| 786 // C++ interpreter doesn't throw implicit exceptions | |
| 787 ShouldNotReachHere(); | |
| 788 #else | |
| 789 switch (exception_kind) { | |
| 790 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 791 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 792 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 793 default: ShouldNotReachHere(); | |
| 794 } | |
| 795 #endif // !CC_INTERP | |
| 796 } else { | |
| 797 switch (exception_kind) { | |
| 798 case STACK_OVERFLOW: { | |
| 799 // Stack overflow only occurs upon frame setup; the callee is | |
| 800 // going to be unwound. Dispatch to a shared runtime stub | |
| 801 // which will cause the StackOverflowError to be fabricated | |
| 802 // and processed. | |
| 803 // For stack overflow in deoptimization blob, cleanup thread. | |
| 804 if (thread->deopt_mark() != NULL) { | |
| 805 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 806 } | |
| 807 return StubRoutines::throw_StackOverflowError_entry(); | |
| 808 } | |
| 809 | |
| 810 case IMPLICIT_NULL: { | |
| 811 if (VtableStubs::contains(pc)) { | |
| 812 // We haven't yet entered the callee frame. Fabricate an | |
| 813 // exception and begin dispatching it in the caller. Since | |
| 814 // the caller was at a call site, it's safe to destroy all | |
| 815 // caller-saved registers, as these entry points do. | |
| 816 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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817 |
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818 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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819 if (vt_stub == NULL) return NULL; |
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820 |
| 0 | 821 if (vt_stub->is_abstract_method_error(pc)) { |
| 822 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 823 return StubRoutines::throw_AbstractMethodError_entry(); | |
| 824 } else { | |
| 825 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 826 } | |
| 827 } else { | |
| 828 CodeBlob* cb = CodeCache::find_blob(pc); | |
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829 |
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830 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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831 if (cb == NULL) return NULL; |
| 0 | 832 |
| 833 // Exception happened in CodeCache. Must be either: | |
| 834 // 1. Inline-cache check in C2I handler blob, | |
| 835 // 2. Inline-cache check in nmethod, or | |
| 836 // 3. Implict null exception in nmethod | |
| 837 | |
| 838 if (!cb->is_nmethod()) { | |
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839 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
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840 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
| 0 | 841 // There is no handler here, so we will simply unwind. |
| 842 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 843 } | |
| 844 | |
| 845 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 846 nmethod* nm = (nmethod*)cb; | |
| 847 if (nm->inlinecache_check_contains(pc)) { | |
| 848 // exception happened inside inline-cache check code | |
| 849 // => the nmethod is not yet active (i.e., the frame | |
| 850 // is not set up yet) => use return address pushed by | |
| 851 // caller => don't push another return address | |
| 852 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 853 } | |
| 854 | |
| 855 #ifndef PRODUCT | |
| 856 _implicit_null_throws++; | |
| 857 #endif | |
| 858 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 859 // If there's an unexpected fault, target_pc might be NULL, |
| 860 // in which case we want to fall through into the normal | |
| 861 // error handling code. | |
| 0 | 862 } |
| 863 | |
| 864 break; // fall through | |
| 865 } | |
| 866 | |
| 867 | |
| 868 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 869 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 870 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 871 #ifndef PRODUCT | |
| 872 _implicit_div0_throws++; | |
| 873 #endif | |
| 874 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 875 // If there's an unexpected fault, target_pc might be NULL, |
| 876 // in which case we want to fall through into the normal | |
| 877 // error handling code. | |
| 0 | 878 break; // fall through |
| 879 } | |
| 880 | |
| 881 default: ShouldNotReachHere(); | |
| 882 } | |
| 883 | |
| 884 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 885 | |
| 886 // for AbortVMOnException flag | |
| 887 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 888 if (exception_kind == IMPLICIT_NULL) { | |
|
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889 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 890 } else { |
|
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891 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 892 } |
| 893 return target_pc; | |
| 894 } | |
| 895 | |
| 896 ShouldNotReachHere(); | |
| 897 return NULL; | |
| 898 } | |
| 899 | |
| 900 | |
| 901 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
| 902 { | |
| 903 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
| 904 } | |
| 905 JNI_END | |
| 906 | |
| 907 | |
| 908 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 909 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 910 } | |
| 911 | |
| 912 | |
| 913 #ifndef PRODUCT | |
| 914 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 915 const frame f = thread->last_frame(); | |
| 916 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 917 #ifndef PRODUCT | |
| 918 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 919 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 920 #endif // !PRODUCT | |
| 921 return preserve_this_value; | |
| 922 JRT_END | |
| 923 #endif // !PRODUCT | |
| 924 | |
| 925 | |
| 926 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 927 os::yield_all(attempts); | |
| 928 JRT_END | |
| 929 | |
| 930 | |
| 931 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 932 assert(obj->is_oop(), "must be a valid oop"); | |
| 933 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
| 934 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
| 935 JRT_END | |
| 936 | |
| 937 | |
| 938 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 939 if (thread != NULL) { | |
| 940 if (thread->is_Java_thread()) { | |
| 941 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 942 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 943 } | |
| 944 } | |
| 945 return 0; | |
| 946 } | |
| 947 | |
| 948 /** | |
| 949 * This function ought to be a void function, but cannot be because | |
| 950 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 951 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 952 */ | |
| 953 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 954 return dtrace_object_alloc_base(Thread::current(), o); | |
| 955 } | |
| 956 | |
| 957 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 958 assert(DTraceAllocProbes, "wrong call"); | |
| 959 Klass* klass = o->blueprint(); | |
| 960 int size = o->size(); | |
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961 Symbol* name = klass->name(); |
| 4006 | 962 #ifndef USDT2 |
| 0 | 963 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 964 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 4006 | 965 #else /* USDT2 */ |
| 966 HOTSPOT_OBJECT_ALLOC( | |
| 967 get_java_tid(thread), | |
| 968 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 969 #endif /* USDT2 */ | |
| 0 | 970 return 0; |
| 971 } | |
| 972 | |
| 973 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
| 974 JavaThread* thread, methodOopDesc* method)) | |
| 975 assert(DTraceMethodProbes, "wrong call"); | |
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976 Symbol* kname = method->klass_name(); |
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977 Symbol* name = method->name(); |
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978 Symbol* sig = method->signature(); |
| 4006 | 979 #ifndef USDT2 |
| 0 | 980 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 981 kname->bytes(), kname->utf8_length(), | |
| 982 name->bytes(), name->utf8_length(), | |
| 983 sig->bytes(), sig->utf8_length()); | |
| 4006 | 984 #else /* USDT2 */ |
| 985 HOTSPOT_METHOD_ENTRY( | |
| 986 get_java_tid(thread), | |
| 987 (char *) kname->bytes(), kname->utf8_length(), | |
| 988 (char *) name->bytes(), name->utf8_length(), | |
| 989 (char *) sig->bytes(), sig->utf8_length()); | |
| 990 #endif /* USDT2 */ | |
| 0 | 991 return 0; |
| 992 JRT_END | |
| 993 | |
| 994 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
| 995 JavaThread* thread, methodOopDesc* method)) | |
| 996 assert(DTraceMethodProbes, "wrong call"); | |
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997 Symbol* kname = method->klass_name(); |
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998 Symbol* name = method->name(); |
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999 Symbol* sig = method->signature(); |
| 4006 | 1000 #ifndef USDT2 |
| 0 | 1001 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 1002 kname->bytes(), kname->utf8_length(), | |
| 1003 name->bytes(), name->utf8_length(), | |
| 1004 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1005 #else /* USDT2 */ |
| 1006 HOTSPOT_METHOD_RETURN( | |
| 1007 get_java_tid(thread), | |
| 1008 (char *) kname->bytes(), kname->utf8_length(), | |
| 1009 (char *) name->bytes(), name->utf8_length(), | |
| 1010 (char *) sig->bytes(), sig->utf8_length()); | |
| 1011 #endif /* USDT2 */ | |
| 0 | 1012 return 0; |
| 1013 JRT_END | |
| 1014 | |
| 1015 | |
| 1016 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 1017 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1018 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 1019 // vtable updates, etc. Caller frame must be compiled. | |
| 1020 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 1021 ResourceMark rm(THREAD); | |
| 1022 | |
| 1023 // last java frame on stack (which includes native call frames) | |
| 1024 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 1025 | |
| 1026 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 1027 } | |
| 1028 | |
| 1029 | |
| 1030 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 1031 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1032 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 1033 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1034 vframeStream& vfst, | |
| 1035 Bytecodes::Code& bc, | |
| 1036 CallInfo& callinfo, TRAPS) { | |
| 1037 Handle receiver; | |
| 1038 Handle nullHandle; //create a handy null handle for exception returns | |
| 1039 | |
| 1040 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1041 | |
| 1042 // Find caller and bci from vframe | |
| 1043 methodHandle caller (THREAD, vfst.method()); | |
| 1044 int bci = vfst.bci(); | |
| 1045 | |
| 1046 // Find bytecode | |
| 2142 | 1047 Bytecode_invoke bytecode(caller, bci); |
| 1048 bc = bytecode.java_code(); | |
| 1049 int bytecode_index = bytecode.index(); | |
| 0 | 1050 |
| 1051 // Find receiver for non-static call | |
| 1052 if (bc != Bytecodes::_invokestatic) { | |
| 1053 // This register map must be update since we need to find the receiver for | |
| 1054 // compiled frames. The receiver might be in a register. | |
| 1055 RegisterMap reg_map2(thread); | |
| 1056 frame stubFrame = thread->last_frame(); | |
| 1057 // Caller-frame is a compiled frame | |
| 1058 frame callerFrame = stubFrame.sender(®_map2); | |
| 1059 | |
| 2142 | 1060 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1061 if (callee.is_null()) { |
| 1062 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1063 } | |
| 1064 // Retrieve from a compiled argument list | |
| 1065 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1066 | |
| 1067 if (receiver.is_null()) { | |
| 1068 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1069 } | |
| 1070 } | |
| 1071 | |
| 1072 // Resolve method. This is parameterized by bytecode. | |
| 1073 constantPoolHandle constants (THREAD, caller->constants()); | |
| 1074 assert (receiver.is_null() || receiver->is_oop(), "wrong receiver"); | |
| 1075 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); | |
| 1076 | |
| 1077 #ifdef ASSERT | |
| 1078 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1079 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
| 0 | 1080 assert(receiver.not_null(), "should have thrown exception"); |
| 1081 KlassHandle receiver_klass (THREAD, receiver->klass()); | |
| 1082 klassOop rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); | |
| 1083 // klass is already loaded | |
| 1084 KlassHandle static_receiver_klass (THREAD, rk); | |
| 1085 assert(receiver_klass->is_subtype_of(static_receiver_klass()), "actual receiver must be subclass of static receiver klass"); | |
| 1086 if (receiver_klass->oop_is_instance()) { | |
| 1087 if (instanceKlass::cast(receiver_klass())->is_not_initialized()) { | |
| 1088 tty->print_cr("ERROR: Klass not yet initialized!!"); | |
| 1089 receiver_klass.print(); | |
| 1090 } | |
| 1091 assert (!instanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); | |
| 1092 } | |
| 1093 } | |
| 1094 #endif | |
| 1095 | |
| 1096 return receiver; | |
| 1097 } | |
| 1098 | |
| 1099 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1100 ResourceMark rm(THREAD); | |
| 1101 // We need first to check if any Java activations (compiled, interpreted) | |
| 1102 // exist on the stack since last JavaCall. If not, we need | |
| 1103 // to get the target method from the JavaCall wrapper. | |
| 1104 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1105 methodHandle callee_method; | |
| 1106 if (vfst.at_end()) { | |
| 1107 // No Java frames were found on stack since we did the JavaCall. | |
| 1108 // Hence the stack can only contain an entry_frame. We need to | |
| 1109 // find the target method from the stub frame. | |
| 1110 RegisterMap reg_map(thread, false); | |
| 1111 frame fr = thread->last_frame(); | |
| 1112 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1113 fr = fr.sender(®_map); | |
| 1114 assert(fr.is_entry_frame(), "must be"); | |
| 1115 // fr is now pointing to the entry frame. | |
| 1116 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1117 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1118 } else { | |
| 1119 Bytecodes::Code bc; | |
| 1120 CallInfo callinfo; | |
| 1121 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1122 callee_method = callinfo.selected_method(); | |
| 1123 } | |
| 1124 assert(callee_method()->is_method(), "must be"); | |
| 1125 return callee_method; | |
| 1126 } | |
| 1127 | |
| 1128 // Resolves a call. | |
| 1129 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1130 bool is_virtual, | |
| 1131 bool is_optimized, TRAPS) { | |
| 1132 methodHandle callee_method; | |
| 1133 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1134 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1135 int retry_count = 0; | |
| 1136 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1137 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1138 // If has a pending exception then there is no need to re-try to |
| 1139 // resolve this method. | |
| 1140 // If the method has been redefined, we need to try again. | |
| 1141 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1142 // require that java.lang.Object has been updated. | |
| 1143 | |
| 1144 // It is very unlikely that method is redefined more than 100 times | |
| 1145 // in the middle of resolve. If it is looping here more than 100 times | |
| 1146 // means then there could be a bug here. | |
| 1147 guarantee((retry_count++ < 100), | |
| 1148 "Could not resolve to latest version of redefined method"); | |
| 1149 // method is redefined in the middle of resolve so re-try. | |
| 1150 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1151 } | |
| 1152 } | |
| 1153 return callee_method; | |
| 1154 } | |
| 1155 | |
| 1156 // Resolves a call. The compilers generate code for calls that go here | |
| 1157 // and are patched with the real destination of the call. | |
| 1158 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1159 bool is_virtual, | |
| 1160 bool is_optimized, TRAPS) { | |
| 1161 | |
| 1162 ResourceMark rm(thread); | |
| 1163 RegisterMap cbl_map(thread, false); | |
| 1164 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1165 | |
| 1295 | 1166 CodeBlob* caller_cb = caller_frame.cb(); |
| 1167 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1168 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 0 | 1169 // make sure caller is not getting deoptimized |
| 1170 // and removed before we are done with it. | |
| 1171 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1172 nmethodLocker caller_lock(caller_nm); |
| 0 | 1173 |
| 1174 | |
| 1175 // determine call info & receiver | |
| 1176 // note: a) receiver is NULL for static calls | |
| 1177 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1178 CallInfo call_info; | |
| 1179 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1180 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1181 call_info, CHECK_(methodHandle())); | |
| 1182 methodHandle callee_method = call_info.selected_method(); | |
| 1183 | |
| 1184 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic) || | |
| 1185 ( is_virtual && invoke_code != Bytecodes::_invokestatic), "inconsistent bytecode"); | |
| 1186 | |
| 1187 #ifndef PRODUCT | |
| 1188 // tracing/debugging/statistics | |
| 1189 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1190 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1191 (&_resolve_static_ctr); | |
| 1192 Atomic::inc(addr); | |
| 1193 | |
| 1194 if (TraceCallFixup) { | |
| 1195 ResourceMark rm(thread); | |
| 1196 tty->print("resolving %s%s (%s) call to", | |
| 1197 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1198 Bytecodes::name(invoke_code)); | |
| 1199 callee_method->print_short_name(tty); | |
| 1200 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1201 } | |
| 1202 #endif | |
| 1203 | |
| 1295 | 1204 // JSR 292 |
| 1205 // If the resolved method is a MethodHandle invoke target the call | |
| 1206 // site must be a MethodHandle call site. | |
| 1207 if (callee_method->is_method_handle_invoke()) { | |
| 1208 assert(caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); | |
| 1209 } | |
| 1210 | |
| 0 | 1211 // Compute entry points. This might require generation of C2I converter |
| 1212 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1213 // computation of the entry points is independent of patching the call. We | |
| 1214 // always return the entry-point, but we only patch the stub if the call has | |
| 1215 // not been deoptimized. Return values: For a virtual call this is an | |
| 1216 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1217 // virtual this is just a destination address. | |
| 1218 | |
| 1219 StaticCallInfo static_call_info; | |
| 1220 CompiledICInfo virtual_call_info; | |
| 1221 | |
| 1222 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1223 // we are done patching the code. | |
| 1295 | 1224 nmethod* callee_nm = callee_method->code(); |
| 1225 nmethodLocker nl_callee(callee_nm); | |
| 0 | 1226 #ifdef ASSERT |
| 1295 | 1227 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1228 #endif |
| 1229 | |
| 1230 if (is_virtual) { | |
| 1231 assert(receiver.not_null(), "sanity check"); | |
| 1232 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
| 1233 KlassHandle h_klass(THREAD, receiver->klass()); | |
| 1234 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
| 1235 is_optimized, static_bound, virtual_call_info, | |
| 1236 CHECK_(methodHandle())); | |
| 1237 } else { | |
| 1238 // static call | |
| 1239 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1240 } | |
| 1241 | |
| 1242 // grab lock, check for deoptimization and potentially patch caller | |
| 1243 { | |
| 1244 MutexLocker ml_patch(CompiledIC_lock); | |
| 1245 | |
| 1246 // Now that we are ready to patch if the methodOop was redefined then | |
| 1247 // don't update call site and let the caller retry. | |
| 1248 | |
| 1249 if (!callee_method->is_old()) { | |
| 1250 #ifdef ASSERT | |
| 1251 // We must not try to patch to jump to an already unloaded method. | |
| 1252 if (dest_entry_point != 0) { | |
| 1253 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
| 1254 "should not unload nmethod while locked"); | |
| 1255 } | |
| 1256 #endif | |
| 1257 if (is_virtual) { | |
| 1258 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1259 if (inline_cache->is_clean()) { | |
| 1260 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1261 } | |
| 1262 } else { | |
| 1263 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1264 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1265 } | |
| 1266 } | |
| 1267 | |
| 1268 } // unlock CompiledIC_lock | |
| 1269 | |
| 1270 return callee_method; | |
| 1271 } | |
| 1272 | |
| 1273 | |
| 1274 // Inline caches exist only in compiled code | |
| 1275 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1276 #ifdef ASSERT | |
| 1277 RegisterMap reg_map(thread, false); | |
| 1278 frame stub_frame = thread->last_frame(); | |
| 1279 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1280 frame caller_frame = stub_frame.sender(®_map); | |
| 1281 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
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1282 assert(!caller_frame.is_ricochet_frame(), "unexpected frame"); |
| 0 | 1283 #endif /* ASSERT */ |
| 1284 | |
| 1285 methodHandle callee_method; | |
| 1286 JRT_BLOCK | |
| 1287 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
| 1288 // Return methodOop through TLS | |
| 1289 thread->set_vm_result(callee_method()); | |
| 1290 JRT_BLOCK_END | |
| 1291 // return compiled code entry point after potential safepoints | |
| 1292 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1293 return callee_method->verified_code_entry(); | |
| 1294 JRT_END | |
| 1295 | |
| 1296 | |
| 1297 // Handle call site that has been made non-entrant | |
| 1298 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1299 // 6243940 We might end up in here if the callee is deoptimized | |
| 1300 // as we race to call it. We don't want to take a safepoint if | |
| 1301 // the caller was interpreted because the caller frame will look | |
| 1302 // interpreted to the stack walkers and arguments are now | |
| 1303 // "compiled" so it is much better to make this transition | |
| 1304 // invisible to the stack walking code. The i2c path will | |
| 1305 // place the callee method in the callee_target. It is stashed | |
| 1306 // there because if we try and find the callee by normal means a | |
| 1307 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1308 RegisterMap reg_map(thread, false); | |
| 1309 frame stub_frame = thread->last_frame(); | |
| 1310 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1311 frame caller_frame = stub_frame.sender(®_map); | |
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1312 |
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1313 // MethodHandle invokes don't have a CompiledIC and should always |
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1314 // simply redispatch to the callee_target. |
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1315 address sender_pc = caller_frame.pc(); |
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1316 CodeBlob* sender_cb = caller_frame.cb(); |
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1317 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
| 1204 | 1318 bool is_mh_invoke_via_adapter = false; // Direct c2c call or via adapter? |
| 1319 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) { | |
| 1320 // If the callee_target is set, then we have come here via an i2c | |
| 1321 // adapter. | |
| 1322 methodOop callee = thread->callee_target(); | |
| 1323 if (callee != NULL) { | |
| 1324 assert(callee->is_method(), "sanity"); | |
| 1325 is_mh_invoke_via_adapter = true; | |
| 1326 } | |
| 1327 } | |
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1328 |
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1329 if (caller_frame.is_interpreted_frame() || |
| 1204 | 1330 caller_frame.is_entry_frame() || |
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1331 caller_frame.is_ricochet_frame() || |
| 1204 | 1332 is_mh_invoke_via_adapter) { |
| 0 | 1333 methodOop callee = thread->callee_target(); |
| 1334 guarantee(callee != NULL && callee->is_method(), "bad handshake"); | |
| 1335 thread->set_vm_result(callee); | |
| 1336 thread->set_callee_target(NULL); | |
| 1337 return callee->get_c2i_entry(); | |
| 1338 } | |
| 1339 | |
| 1340 // Must be compiled to compiled path which is safe to stackwalk | |
| 1341 methodHandle callee_method; | |
| 1342 JRT_BLOCK | |
| 1343 // Force resolving of caller (if we called from compiled frame) | |
| 1344 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
| 1345 thread->set_vm_result(callee_method()); | |
| 1346 JRT_BLOCK_END | |
| 1347 // return compiled code entry point after potential safepoints | |
| 1348 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1349 return callee_method->verified_code_entry(); | |
| 1350 JRT_END | |
| 1351 | |
| 1352 | |
| 1353 // resolve a static call and patch code | |
| 1354 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1355 methodHandle callee_method; | |
| 1356 JRT_BLOCK | |
| 1357 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
| 1358 thread->set_vm_result(callee_method()); | |
| 1359 JRT_BLOCK_END | |
| 1360 // return compiled code entry point after potential safepoints | |
| 1361 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1362 return callee_method->verified_code_entry(); | |
| 1363 JRT_END | |
| 1364 | |
| 1365 | |
| 1366 // resolve virtual call and update inline cache to monomorphic | |
| 1367 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1368 methodHandle callee_method; | |
| 1369 JRT_BLOCK | |
| 1370 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
| 1371 thread->set_vm_result(callee_method()); | |
| 1372 JRT_BLOCK_END | |
| 1373 // return compiled code entry point after potential safepoints | |
| 1374 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1375 return callee_method->verified_code_entry(); | |
| 1376 JRT_END | |
| 1377 | |
| 1378 | |
| 1379 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1380 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1381 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1382 methodHandle callee_method; | |
| 1383 JRT_BLOCK | |
| 1384 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
| 1385 thread->set_vm_result(callee_method()); | |
| 1386 JRT_BLOCK_END | |
| 1387 // return compiled code entry point after potential safepoints | |
| 1388 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1389 return callee_method->verified_code_entry(); | |
| 1390 JRT_END | |
| 1391 | |
| 1392 | |
| 1393 | |
| 1394 | |
| 1395 | |
| 1396 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1397 ResourceMark rm(thread); | |
| 1398 CallInfo call_info; | |
| 1399 Bytecodes::Code bc; | |
| 1400 | |
| 1401 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1402 // receivers for non-static calls | |
| 1403 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1404 CHECK_(methodHandle())); | |
| 1405 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1406 // If we fell thru to below we would think that the site was going megamorphic | |
| 1407 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1408 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1409 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1410 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1411 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1412 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1413 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1414 // | |
| 1415 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1416 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1417 if (TraceCallFixup) { | |
| 1418 RegisterMap reg_map(thread, false); | |
| 1419 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1420 ResourceMark rm(thread); | |
| 1421 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1422 callee_method->print_short_name(tty); | |
| 1423 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1424 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1425 } | |
| 1426 return callee_method; | |
| 1427 } | |
| 1428 | |
| 1429 methodHandle callee_method = call_info.selected_method(); | |
| 1430 | |
| 1431 bool should_be_mono = false; | |
| 1432 | |
| 1433 #ifndef PRODUCT | |
| 1434 Atomic::inc(&_ic_miss_ctr); | |
| 1435 | |
| 1436 // Statistics & Tracing | |
| 1437 if (TraceCallFixup) { | |
| 1438 ResourceMark rm(thread); | |
| 1439 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1440 callee_method->print_short_name(tty); | |
| 1441 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1442 } | |
| 1443 | |
| 1444 if (ICMissHistogram) { | |
| 1445 MutexLocker m(VMStatistic_lock); | |
| 1446 RegisterMap reg_map(thread, false); | |
| 1447 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1448 // produce statistics under the lock | |
| 1449 trace_ic_miss(f.pc()); | |
| 1450 } | |
| 1451 #endif | |
| 1452 | |
| 1453 // install an event collector so that when a vtable stub is created the | |
| 1454 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1455 // event can't be posted when the stub is created as locks are held | |
| 1456 // - instead the event will be deferred until the event collector goes | |
| 1457 // out of scope. | |
| 1458 JvmtiDynamicCodeEventCollector event_collector; | |
| 1459 | |
| 1460 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1461 // made non-entrant or we are called from interpreted. | |
| 1462 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1463 RegisterMap reg_map(thread, false); | |
| 1464 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1465 CodeBlob* cb = caller_frame.cb(); | |
| 1466 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1467 // Not a non-entrant nmethod, so find inline_cache | |
| 1468 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1469 bool should_be_mono = false; | |
| 1470 if (inline_cache->is_optimized()) { | |
| 1471 if (TraceCallFixup) { | |
| 1472 ResourceMark rm(thread); | |
| 1473 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1474 callee_method->print_short_name(tty); | |
| 1475 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1476 } | |
| 1477 should_be_mono = true; | |
| 1478 } else { | |
| 1479 compiledICHolderOop ic_oop = (compiledICHolderOop) inline_cache->cached_oop(); | |
| 1480 if ( ic_oop != NULL && ic_oop->is_compiledICHolder()) { | |
| 1481 | |
| 1482 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1483 // This isn't a real miss. We must have seen that compiled code | |
| 1484 // is now available and we want the call site converted to a | |
| 1485 // monomorphic compiled call site. | |
| 1486 // We can't assert for callee_method->code() != NULL because it | |
| 1487 // could have been deoptimized in the meantime | |
| 1488 if (TraceCallFixup) { | |
| 1489 ResourceMark rm(thread); | |
| 1490 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1491 callee_method->print_short_name(tty); | |
| 1492 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1493 } | |
| 1494 should_be_mono = true; | |
| 1495 } | |
| 1496 } | |
| 1497 } | |
| 1498 | |
| 1499 if (should_be_mono) { | |
| 1500 | |
| 1501 // We have a path that was monomorphic but was going interpreted | |
| 1502 // and now we have (or had) a compiled entry. We correct the IC | |
| 1503 // by using a new icBuffer. | |
| 1504 CompiledICInfo info; | |
| 1505 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1506 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1507 receiver_klass, | |
| 1508 inline_cache->is_optimized(), | |
| 1509 false, | |
| 1510 info, CHECK_(methodHandle())); | |
| 1511 inline_cache->set_to_monomorphic(info); | |
| 1512 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 1513 // Change to megamorphic | |
| 1514 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1515 } else { | |
| 1516 // Either clean or megamorphic | |
| 1517 } | |
| 1518 } | |
| 1519 } // Release CompiledIC_lock | |
| 1520 | |
| 1521 return callee_method; | |
| 1522 } | |
| 1523 | |
| 1524 // | |
| 1525 // Resets a call-site in compiled code so it will get resolved again. | |
| 1526 // This routines handles both virtual call sites, optimized virtual call | |
| 1527 // sites, and static call sites. Typically used to change a call sites | |
| 1528 // destination from compiled to interpreted. | |
| 1529 // | |
| 1530 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1531 ResourceMark rm(thread); | |
| 1532 RegisterMap reg_map(thread, false); | |
| 1533 frame stub_frame = thread->last_frame(); | |
| 1534 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1535 frame caller = stub_frame.sender(®_map); | |
| 1536 | |
| 1537 // Do nothing if the frame isn't a live compiled frame. | |
| 1538 // nmethod could be deoptimized by the time we get here | |
| 1539 // so no update to the caller is needed. | |
| 1540 | |
| 1541 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1542 | |
| 1543 address pc = caller.pc(); | |
| 1544 | |
| 1545 // Default call_addr is the location of the "basic" call. | |
| 1546 // Determine the address of the call we a reresolving. With | |
| 1547 // Inline Caches we will always find a recognizable call. | |
| 1548 // With Inline Caches disabled we may or may not find a | |
| 1549 // recognizable call. We will always find a call for static | |
| 1550 // calls and for optimized virtual calls. For vanilla virtual | |
| 1551 // calls it depends on the state of the UseInlineCaches switch. | |
| 1552 // | |
| 1553 // With Inline Caches disabled we can get here for a virtual call | |
| 1554 // for two reasons: | |
| 1555 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1556 // will run us thru handle_wrong_method and we will eventually | |
| 1557 // end up in the interpreter to throw the ame. | |
| 1558 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1559 // call and between the time we fetch the entry address and | |
| 1560 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1561 // we will wind up in the interprter (thru a c2i with c2). | |
| 1562 // | |
| 1563 address call_addr = NULL; | |
| 1564 { | |
| 1565 // Get call instruction under lock because another thread may be | |
| 1566 // busy patching it. | |
| 1567 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1568 // Location of call instruction | |
| 1569 if (NativeCall::is_call_before(pc)) { | |
| 1570 NativeCall *ncall = nativeCall_before(pc); | |
| 1571 call_addr = ncall->instruction_address(); | |
| 1572 } | |
| 1573 } | |
| 1574 | |
| 1575 // Check for static or virtual call | |
| 1576 bool is_static_call = false; | |
| 1577 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1578 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1579 // this is done with it. | |
| 1580 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1581 nmethodLocker nmlock(caller_nm); | |
| 1582 | |
| 1583 if (call_addr != NULL) { | |
| 1584 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1585 int ret = iter.next(); // Get item | |
| 1586 if (ret) { | |
| 1587 assert(iter.addr() == call_addr, "must find call"); | |
| 1588 if (iter.type() == relocInfo::static_call_type) { | |
| 1589 is_static_call = true; | |
| 1590 } else { | |
| 1591 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1592 iter.type() == relocInfo::opt_virtual_call_type | |
| 1593 , "unexpected relocInfo. type"); | |
| 1594 } | |
| 1595 } else { | |
| 1596 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1597 } | |
| 1598 | |
| 1599 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1600 // than directly setting it to the new destination, since resolving of calls | |
| 1601 // is always done through the same code path. (experience shows that it | |
| 1602 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1603 // to a wrong method). It should not be performance critical, since the | |
| 1604 // resolve is only done once. | |
| 1605 | |
| 1606 MutexLocker ml(CompiledIC_lock); | |
| 1607 // | |
| 1608 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1609 // as it is a waste of time | |
| 1610 // | |
| 1611 if (caller_nm->is_in_use()) { | |
| 1612 if (is_static_call) { | |
| 1613 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1614 ssc->set_to_clean(); | |
| 1615 } else { | |
| 1616 // compiled, dispatched call (which used to call an interpreted method) | |
| 1617 CompiledIC* inline_cache = CompiledIC_at(call_addr); | |
| 1618 inline_cache->set_to_clean(); | |
| 1619 } | |
| 1620 } | |
| 1621 } | |
| 1622 | |
| 1623 } | |
| 1624 | |
| 1625 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1626 | |
| 1627 | |
| 1628 #ifndef PRODUCT | |
| 1629 Atomic::inc(&_wrong_method_ctr); | |
| 1630 | |
| 1631 if (TraceCallFixup) { | |
| 1632 ResourceMark rm(thread); | |
| 1633 tty->print("handle_wrong_method reresolving call to"); | |
| 1634 callee_method->print_short_name(tty); | |
| 1635 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1636 } | |
| 1637 #endif | |
| 1638 | |
| 1639 return callee_method; | |
| 1640 } | |
| 1641 | |
| 1642 // --------------------------------------------------------------------------- | |
| 1643 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1644 // we were called by a compiled method. However we could have lost a race | |
| 1645 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1646 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1647 // so he no longer calls into the interpreter. |
| 1648 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(methodOopDesc* method, address caller_pc)) | |
| 1649 methodOop moop(method); | |
| 1650 | |
| 1651 address entry_point = moop->from_compiled_entry(); | |
| 1652 | |
| 1653 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1654 // been resolved yet, in which case this function will be called from | |
| 1655 // an nmethod that has been patched for deopt and we can ignore the | |
| 1656 // request for a fixup. | |
| 1657 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1658 // is now back to the i2c in that case we don't need to patch and if | |
| 1659 // we did we'd leap into space because the callsite needs to use | |
| 1660 // "to interpreter" stub in order to load up the methodOop. Don't | |
| 1661 // ask me how I know this... | |
| 1662 | |
| 1663 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1664 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1665 return; | |
| 1666 } | |
| 1667 | |
| 1668 // The check above makes sure this is a nmethod. | |
| 1669 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1670 assert(nm, "must be"); | |
| 1671 | |
|
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1672 // Get the return PC for the passed caller PC. |
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1673 address return_pc = caller_pc + frame::pc_return_offset; |
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1674 |
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1675 // Don't fixup method handle call sites as the executed method |
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1676 // handle adapters are doing the required MethodHandle chain work. |
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1677 if (nm->is_method_handle_return(return_pc)) { |
| 0 | 1678 return; |
| 1679 } | |
| 1680 | |
| 1681 // There is a benign race here. We could be attempting to patch to a compiled | |
| 1682 // entry point at the same time the callee is being deoptimized. If that is | |
| 1683 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1684 // call site with the same old data. clear_code will set code() to NULL | |
| 1685 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1686 // to patch. If we hit the window where the callee has a c2i in the | |
| 1687 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1688 // and patch the code with the same old data. Asi es la vida. | |
| 1689 | |
| 1690 if (moop->code() == NULL) return; | |
| 1691 | |
| 1205 | 1692 if (nm->is_in_use()) { |
| 0 | 1693 |
| 1694 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1695 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
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1696 if (NativeCall::is_call_before(return_pc)) { |
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1697 NativeCall *call = nativeCall_before(return_pc); |
| 0 | 1698 // |
| 1699 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1700 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1701 // see compiled code and attempt to patch the site by calling us. This would | |
| 1702 // then incorrectly convert the call site to optimized and its downhill from | |
| 1703 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1704 // just made a call site that could be megamorphic into a monomorphic site | |
| 1705 // for the rest of its life! Just another racing bug in the life of | |
| 1706 // fixup_callers_callsite ... | |
| 1707 // | |
|
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1708 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1709 iter.next(); |
| 1710 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1711 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1712 if ( typ != relocInfo::static_call_type && | |
| 1713 typ != relocInfo::opt_virtual_call_type && | |
| 1714 typ != relocInfo::static_stub_type) { | |
| 1715 return; | |
| 1716 } | |
| 1717 address destination = call->destination(); | |
| 1718 if (destination != entry_point) { | |
| 1719 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1720 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1721 if (callee == cb || callee->is_adapter_blob()) { | |
| 1722 // static call or optimized virtual | |
| 1723 if (TraceCallFixup) { | |
| 1204 | 1724 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1725 moop->print_short_name(tty); |
| 1726 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1727 } | |
| 1728 call->set_destination_mt_safe(entry_point); | |
| 1729 } else { | |
| 1730 if (TraceCallFixup) { | |
| 1731 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1732 moop->print_short_name(tty); | |
| 1733 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1734 } | |
| 1735 // assert is too strong could also be resolve destinations. | |
| 1736 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1737 } | |
| 1738 } else { | |
| 1739 if (TraceCallFixup) { | |
| 1204 | 1740 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1741 moop->print_short_name(tty); |
| 1742 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1743 } | |
| 1744 } | |
| 1745 } | |
| 1746 } | |
| 1747 IRT_END | |
| 1748 | |
| 1749 | |
| 1750 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1751 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1752 oopDesc* dest, jint dest_pos, | |
| 1753 jint length, | |
| 1754 JavaThread* thread)) { | |
| 1755 #ifndef PRODUCT | |
| 1756 _slow_array_copy_ctr++; | |
| 1757 #endif | |
| 1758 // Check if we have null pointers | |
| 1759 if (src == NULL || dest == NULL) { | |
| 1760 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1761 } | |
| 1762 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1763 // even though the copy_array API also performs dynamic checks to ensure | |
| 1764 // that src and dest are truly arrays (and are conformable). | |
| 1765 // The copy_array mechanism is awkward and could be removed, but | |
| 1766 // the compilers don't call this function except as a last resort, | |
| 1767 // so it probably doesn't matter. | |
| 1768 Klass::cast(src->klass())->copy_array((arrayOopDesc*)src, src_pos, | |
| 1769 (arrayOopDesc*)dest, dest_pos, | |
| 1770 length, thread); | |
| 1771 } | |
| 1772 JRT_END | |
| 1773 | |
| 1774 char* SharedRuntime::generate_class_cast_message( | |
| 1775 JavaThread* thread, const char* objName) { | |
| 1776 | |
| 1777 // Get target class name from the checkcast instruction | |
| 1778 vframeStream vfst(thread, true); | |
| 1779 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1780 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 0 | 1781 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at( |
| 2142 | 1782 cc.index(), thread)); |
| 0 | 1783 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1784 } | |
| 1785 | |
| 710 | 1786 char* SharedRuntime::generate_wrong_method_type_message(JavaThread* thread, |
| 1787 oopDesc* required, | |
| 1788 oopDesc* actual) { | |
|
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1789 if (TraceMethodHandles) { |
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1790 tty->print_cr("WrongMethodType thread="PTR_FORMAT" req="PTR_FORMAT" act="PTR_FORMAT"", |
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1791 thread, required, actual); |
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1792 } |
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1793 assert(EnableInvokeDynamic, ""); |
| 710 | 1794 oop singleKlass = wrong_method_type_is_for_single_argument(thread, required); |
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1795 char* message = NULL; |
| 710 | 1796 if (singleKlass != NULL) { |
| 1797 const char* objName = "argument or return value"; | |
| 1798 if (actual != NULL) { | |
| 1799 // be flexible about the junk passed in: | |
| 1800 klassOop ak = (actual->is_klass() | |
| 1801 ? (klassOop)actual | |
| 1802 : actual->klass()); | |
| 1803 objName = Klass::cast(ak)->external_name(); | |
| 1804 } | |
| 1805 Klass* targetKlass = Klass::cast(required->is_klass() | |
| 1806 ? (klassOop)required | |
| 1807 : java_lang_Class::as_klassOop(required)); | |
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1808 message = generate_class_cast_message(objName, targetKlass->external_name()); |
| 710 | 1809 } else { |
| 1810 // %%% need to get the MethodType string, without messing around too much | |
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1811 const char* desc = NULL; |
| 710 | 1812 // Get a signature from the invoke instruction |
| 1813 const char* mhName = "method handle"; | |
| 1814 const char* targetType = "the required signature"; | |
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1815 int targetArity = -1, mhArity = -1; |
| 710 | 1816 vframeStream vfst(thread, true); |
| 1817 if (!vfst.at_end()) { | |
| 2142 | 1818 Bytecode_invoke call(vfst.method(), vfst.bci()); |
| 710 | 1819 methodHandle target; |
| 1820 { | |
| 1821 EXCEPTION_MARK; | |
| 2142 | 1822 target = call.static_target(THREAD); |
| 710 | 1823 if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; } |
| 1824 } | |
| 1825 if (target.not_null() | |
| 1826 && target->is_method_handle_invoke() | |
| 1827 && required == target->method_handle_type()) { | |
| 1828 targetType = target->signature()->as_C_string(); | |
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1829 targetArity = ArgumentCount(target->signature()).size(); |
| 710 | 1830 } |
| 1831 } | |
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1832 KlassHandle kignore; int dmf_flags = 0; |
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1833 methodHandle actual_method = MethodHandles::decode_method(actual, kignore, dmf_flags); |
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1834 if ((dmf_flags & ~(MethodHandles::_dmf_has_receiver | |
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1835 MethodHandles::_dmf_does_dispatch | |
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1836 MethodHandles::_dmf_from_interface)) != 0) |
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1837 actual_method = methodHandle(); // MH does extra binds, drops, etc. |
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1838 bool has_receiver = ((dmf_flags & MethodHandles::_dmf_has_receiver) != 0); |
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1839 if (actual_method.not_null()) { |
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1840 mhName = actual_method->signature()->as_C_string(); |
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1841 mhArity = ArgumentCount(actual_method->signature()).size(); |
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1842 if (!actual_method->is_static()) mhArity += 1; |
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1843 } else if (java_lang_invoke_MethodHandle::is_instance(actual)) { |
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1844 oopDesc* mhType = java_lang_invoke_MethodHandle::type(actual); |
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1845 mhArity = java_lang_invoke_MethodType::ptype_count(mhType); |
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1846 stringStream st; |
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1847 java_lang_invoke_MethodType::print_signature(mhType, &st); |
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1848 mhName = st.as_string(); |
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1849 } |
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1850 if (targetArity != -1 && targetArity != mhArity) { |
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1851 if (has_receiver && targetArity == mhArity-1) |
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1852 desc = " cannot be called without a receiver argument as "; |
| 710 | 1853 else |
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1854 desc = " cannot be called with a different arity as "; |
| 710 | 1855 } |
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1856 message = generate_class_cast_message(mhName, targetType, |
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1857 desc != NULL ? desc : |
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1858 " cannot be called as "); |
| 710 | 1859 } |
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1860 if (TraceMethodHandles) { |
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1861 tty->print_cr("WrongMethodType => message=%s", message); |
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1862 } |
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1863 return message; |
| 710 | 1864 } |
| 1865 | |
| 1866 oop SharedRuntime::wrong_method_type_is_for_single_argument(JavaThread* thr, | |
| 1867 oopDesc* required) { | |
| 1868 if (required == NULL) return NULL; | |
| 1142 | 1869 if (required->klass() == SystemDictionary::Class_klass()) |
| 710 | 1870 return required; |
| 1871 if (required->is_klass()) | |
| 1872 return Klass::cast(klassOop(required))->java_mirror(); | |
| 1873 return NULL; | |
| 1874 } | |
| 1875 | |
| 1876 | |
| 0 | 1877 char* SharedRuntime::generate_class_cast_message( |
| 710 | 1878 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1879 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1880 | |
| 53 | 1881 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1882 if (NULL == message) { |
| 53 | 1883 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1884 message = const_cast<char*>(objName); |
| 1885 } else { | |
| 1886 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1887 } | |
| 1888 return message; | |
| 1889 } | |
| 1890 | |
| 1891 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1892 (void) JavaThread::current()->reguard_stack(); | |
| 1893 JRT_END | |
| 1894 | |
| 1895 | |
| 1896 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1897 #ifndef PRODUCT | |
| 1898 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1899 #endif | |
| 1900 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1901 oop obj(_obj); | |
| 1902 #ifndef PRODUCT | |
| 1903 _monitor_enter_ctr++; // monitor enter slow | |
| 1904 #endif | |
| 1905 if (PrintBiasedLockingStatistics) { | |
| 1906 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1907 } | |
| 1908 Handle h_obj(THREAD, obj); | |
| 1909 if (UseBiasedLocking) { | |
| 1910 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1911 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1912 } else { | |
| 1913 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1914 } | |
| 1915 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1916 JRT_END | |
| 1917 | |
| 1918 #ifndef PRODUCT | |
| 1919 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1920 #endif | |
| 1921 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1922 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1923 oop obj(_obj); | |
| 1924 #ifndef PRODUCT | |
| 1925 _monitor_exit_ctr++; // monitor exit slow | |
| 1926 #endif | |
| 1927 Thread* THREAD = JavaThread::current(); | |
| 1928 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1929 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1930 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1931 #undef MIGHT_HAVE_PENDING | |
| 1932 #ifdef MIGHT_HAVE_PENDING | |
| 1933 // Save and restore any pending_exception around the exception mark. | |
| 1934 // While the slow_exit must not throw an exception, we could come into | |
| 1935 // this routine with one set. | |
| 1936 oop pending_excep = NULL; | |
| 1937 const char* pending_file; | |
| 1938 int pending_line; | |
| 1939 if (HAS_PENDING_EXCEPTION) { | |
| 1940 pending_excep = PENDING_EXCEPTION; | |
| 1941 pending_file = THREAD->exception_file(); | |
| 1942 pending_line = THREAD->exception_line(); | |
| 1943 CLEAR_PENDING_EXCEPTION; | |
| 1944 } | |
| 1945 #endif /* MIGHT_HAVE_PENDING */ | |
| 1946 | |
| 1947 { | |
| 1948 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1949 EXCEPTION_MARK; | |
| 1950 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1951 } | |
| 1952 | |
| 1953 #ifdef MIGHT_HAVE_PENDING | |
| 1954 if (pending_excep != NULL) { | |
| 1955 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1956 } | |
| 1957 #endif /* MIGHT_HAVE_PENDING */ | |
| 1958 JRT_END | |
| 1959 | |
| 1960 #ifndef PRODUCT | |
| 1961 | |
| 1962 void SharedRuntime::print_statistics() { | |
| 1963 ttyLocker ttyl; | |
| 1964 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1965 | |
| 1966 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1967 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1968 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1969 | |
| 1970 SharedRuntime::print_ic_miss_histogram(); | |
| 1971 | |
| 1972 if (CountRemovableExceptions) { | |
| 1973 if (_nof_removable_exceptions > 0) { | |
| 1974 Unimplemented(); // this counter is not yet incremented | |
| 1975 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1976 } | |
| 1977 } | |
| 1978 | |
| 1979 // Dump the JRT_ENTRY counters | |
| 1980 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 1981 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 1982 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 1983 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 1984 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 1985 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 1986 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 1987 | |
| 1988 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 1989 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 1990 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 1991 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 1992 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 1993 | |
| 1994 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 1995 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 1996 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 1997 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 1998 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 1999 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 2000 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 2001 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 2002 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 2003 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 2004 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 2005 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 2006 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 2007 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 2008 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 2009 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 2010 | |
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2011 AdapterHandlerLibrary::print_statistics(); |
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2012 |
| 0 | 2013 if (xtty != NULL) xtty->tail("statistics"); |
| 2014 } | |
| 2015 | |
| 2016 inline double percent(int x, int y) { | |
| 2017 return 100.0 * x / MAX2(y, 1); | |
| 2018 } | |
| 2019 | |
| 2020 class MethodArityHistogram { | |
| 2021 public: | |
| 2022 enum { MAX_ARITY = 256 }; | |
| 2023 private: | |
| 2024 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 2025 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 2026 static int _max_arity; // max. arity seen | |
| 2027 static int _max_size; // max. arg size seen | |
| 2028 | |
| 2029 static void add_method_to_histogram(nmethod* nm) { | |
| 2030 methodOop m = nm->method(); | |
| 2031 ArgumentCount args(m->signature()); | |
| 2032 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 2033 int argsize = m->size_of_parameters(); | |
| 2034 arity = MIN2(arity, MAX_ARITY-1); | |
| 2035 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 2036 int count = nm->method()->compiled_invocation_count(); | |
| 2037 _arity_histogram[arity] += count; | |
| 2038 _size_histogram[argsize] += count; | |
| 2039 _max_arity = MAX2(_max_arity, arity); | |
| 2040 _max_size = MAX2(_max_size, argsize); | |
| 2041 } | |
| 2042 | |
| 2043 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 2044 const int N = MIN2(5, n); | |
| 2045 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2046 double sum = 0; | |
| 2047 double weighted_sum = 0; | |
| 2048 int i; | |
| 2049 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 2050 double rest = sum; | |
| 2051 double percent = sum / 100; | |
| 2052 for (i = 0; i <= N; i++) { | |
| 2053 rest -= histo[i]; | |
| 2054 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 2055 } | |
| 2056 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 2057 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 2058 } | |
| 2059 | |
| 2060 void print_histogram() { | |
| 2061 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2062 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 2063 tty->print_cr("\nSame for parameter size (in words):"); | |
| 2064 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 2065 tty->cr(); | |
| 2066 } | |
| 2067 | |
| 2068 public: | |
| 2069 MethodArityHistogram() { | |
| 2070 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 2071 _max_arity = _max_size = 0; | |
| 2072 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 2073 CodeCache::nmethods_do(add_method_to_histogram); | |
| 2074 print_histogram(); | |
| 2075 } | |
| 2076 }; | |
| 2077 | |
| 2078 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2079 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2080 int MethodArityHistogram::_max_arity; | |
| 2081 int MethodArityHistogram::_max_size; | |
| 2082 | |
| 2083 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2084 tty->print_cr("Calls from compiled code:"); | |
| 2085 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2086 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2087 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2088 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2089 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2090 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2091 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2092 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2093 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2094 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2095 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2096 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2097 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2098 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2099 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2100 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2101 tty->cr(); | |
| 2102 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2103 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2104 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2105 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2106 tty->cr(); | |
| 2107 | |
| 2108 MethodArityHistogram h; | |
| 2109 } | |
| 2110 #endif | |
| 2111 | |
| 2112 | |
|
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2113 // A simple wrapper class around the calling convention information |
|
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2114 // that allows sharing of adapters for the same calling convention. |
|
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2115 class AdapterFingerPrint : public CHeapObj { |
|
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2116 private: |
|
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2117 union { |
|
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2118 int _compact[3]; |
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2119 int* _fingerprint; |
|
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2120 } _value; |
|
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2121 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2122 // Otherwise _value._fingerprint is the array. |
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2123 |
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2124 // Remap BasicTypes that are handled equivalently by the adapters. |
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2125 // These are correct for the current system but someday it might be |
|
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2126 // necessary to make this mapping platform dependent. |
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2127 static BasicType adapter_encoding(BasicType in) { |
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2128 assert((~0xf & in) == 0, "must fit in 4 bits"); |
|
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2129 switch(in) { |
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2130 case T_BOOLEAN: |
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2131 case T_BYTE: |
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2132 case T_SHORT: |
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2133 case T_CHAR: |
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2134 // There are all promoted to T_INT in the calling convention |
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2135 return T_INT; |
|
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2136 |
|
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2137 case T_OBJECT: |
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2138 case T_ARRAY: |
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|
2139 #ifdef _LP64 |
| 1506 | 2140 return T_LONG; |
|
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|
2141 #else |
| 1506 | 2142 return T_INT; |
|
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|
2143 #endif |
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2144 |
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2145 case T_INT: |
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|
2146 case T_LONG: |
|
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|
2147 case T_FLOAT: |
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|
2148 case T_DOUBLE: |
|
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|
2149 case T_VOID: |
|
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|
2150 return in; |
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|
2151 |
|
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|
2152 default: |
|
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|
2153 ShouldNotReachHere(); |
|
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|
2154 return T_CONFLICT; |
|
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|
2155 } |
|
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|
2156 } |
|
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|
2157 |
|
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|
2158 public: |
|
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|
2159 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
|
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|
2160 // The fingerprint is based on the BasicType signature encoded |
|
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|
2161 // into an array of ints with eight entries per int. |
|
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|
2162 int* ptr; |
|
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2163 int len = (total_args_passed + 7) >> 3; |
|
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2164 if (len <= (int)(sizeof(_value._compact) / sizeof(int))) { |
|
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|
2165 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
|
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2166 // Storing the signature encoded as signed chars hits about 98% |
|
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|
2167 // of the time. |
|
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|
2168 _length = -len; |
|
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|
2169 ptr = _value._compact; |
|
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|
2170 } else { |
|
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|
2171 _length = len; |
|
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|
2172 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length); |
|
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|
2173 ptr = _value._fingerprint; |
|
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|
2174 } |
|
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|
2175 |
|
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|
2176 // Now pack the BasicTypes with 8 per int |
|
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|
2177 int sig_index = 0; |
|
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|
2178 for (int index = 0; index < len; index++) { |
|
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|
2179 int value = 0; |
|
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|
2180 for (int byte = 0; byte < 8; byte++) { |
|
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|
2181 if (sig_index < total_args_passed) { |
|
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|
2182 value = (value << 4) | adapter_encoding(sig_bt[sig_index++]); |
|
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|
2183 } |
|
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|
2184 } |
|
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|
2185 ptr[index] = value; |
|
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|
2186 } |
|
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|
2187 } |
|
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|
2188 |
|
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|
2189 ~AdapterFingerPrint() { |
|
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|
2190 if (_length > 0) { |
|
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|
2191 FREE_C_HEAP_ARRAY(int, _value._fingerprint); |
|
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|
2192 } |
|
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|
2193 } |
|
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|
2194 |
|
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|
2195 int value(int index) { |
|
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|
2196 if (_length < 0) { |
|
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|
2197 return _value._compact[index]; |
|
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|
2198 } |
|
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|
2199 return _value._fingerprint[index]; |
|
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|
2200 } |
|
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|
2201 int length() { |
|
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|
2202 if (_length < 0) return -_length; |
|
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|
2203 return _length; |
|
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|
2204 } |
|
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|
2205 |
|
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|
2206 bool is_compact() { |
|
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|
2207 return _length <= 0; |
|
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|
2208 } |
|
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|
2209 |
|
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|
2210 unsigned int compute_hash() { |
|
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|
2211 int hash = 0; |
|
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|
2212 for (int i = 0; i < length(); i++) { |
|
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|
2213 int v = value(i); |
|
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|
2214 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
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|
2215 } |
|
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|
2216 return (unsigned int)hash; |
|
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|
2217 } |
|
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|
2218 |
|
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|
2219 const char* as_string() { |
|
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|
2220 stringStream st; |
|
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|
2221 st.print("0x"); |
|
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|
2222 for (int i = 0; i < length(); i++) { |
|
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|
2223 st.print("%08x", value(i)); |
|
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|
2224 } |
|
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|
2225 return st.as_string(); |
|
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|
2226 } |
|
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|
2227 |
|
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|
2228 bool equals(AdapterFingerPrint* other) { |
|
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|
2229 if (other->_length != _length) { |
|
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|
2230 return false; |
|
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diff
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|
2231 } |
|
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|
2232 if (_length < 0) { |
|
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|
2233 return _value._compact[0] == other->_value._compact[0] && |
|
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|
2234 _value._compact[1] == other->_value._compact[1] && |
|
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|
2235 _value._compact[2] == other->_value._compact[2]; |
|
1187
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|
2236 } else { |
|
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|
2237 for (int i = 0; i < _length; i++) { |
|
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|
2238 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
|
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|
2239 return false; |
|
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|
2240 } |
|
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|
2241 } |
|
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|
2242 } |
|
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|
2243 return true; |
|
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|
2244 } |
|
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|
2245 }; |
|
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|
2246 |
|
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|
2247 |
|
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|
2248 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
|
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|
2249 class AdapterHandlerTable : public BasicHashtable { |
|
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|
2250 friend class AdapterHandlerTableIterator; |
|
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|
2251 |
|
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|
2252 private: |
|
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diff
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|
2253 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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|
2254 #ifndef PRODUCT |
|
1187
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|
2255 static int _lookups; // number of calls to lookup |
|
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|
2256 static int _buckets; // number of buckets checked |
|
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|
2257 static int _equals; // number of buckets checked with matching hash |
|
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|
2258 static int _hits; // number of successful lookups |
|
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|
2259 static int _compact; // number of equals calls with compact signature |
|
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|
2260 #endif |
|
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|
2261 |
|
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|
2262 AdapterHandlerEntry* bucket(int i) { |
|
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|
2263 return (AdapterHandlerEntry*)BasicHashtable::bucket(i); |
|
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|
2264 } |
|
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diff
changeset
|
2265 |
|
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|
2266 public: |
|
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diff
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|
2267 AdapterHandlerTable() |
|
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|
2268 : BasicHashtable(293, sizeof(AdapterHandlerEntry)) { } |
|
cf0685d550f1
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|
2269 |
|
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|
2270 // Create a new entry suitable for insertion in the table |
|
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|
2271 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
|
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|
2272 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable::new_entry(fingerprint->compute_hash()); |
|
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|
2273 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2274 return entry; |
|
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|
2275 } |
|
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diff
changeset
|
2276 |
|
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changeset
|
2277 // Insert an entry into the table |
|
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|
2278 void add(AdapterHandlerEntry* entry) { |
|
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|
2279 int index = hash_to_index(entry->hash()); |
|
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changeset
|
2280 add_entry(index, entry); |
|
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never
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|
2281 } |
|
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diff
changeset
|
2282 |
|
1207
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changeset
|
2283 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
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diff
changeset
|
2284 entry->deallocate(); |
|
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changeset
|
2285 BasicHashtable::free_entry(entry); |
|
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|
2286 } |
|
74c848d437ab
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parents:
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diff
changeset
|
2287 |
|
1187
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changeset
|
2288 // Find a entry with the same fingerprint if it exists |
|
1207
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|
2289 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
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|
2290 NOT_PRODUCT(_lookups++); |
|
1207
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changeset
|
2291 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
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changeset
|
2292 unsigned int hash = fp.compute_hash(); |
|
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changeset
|
2293 int index = hash_to_index(hash); |
|
cf0685d550f1
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changeset
|
2294 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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|
2295 NOT_PRODUCT(_buckets++); |
|
1187
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changeset
|
2296 if (e->hash() == hash) { |
|
1263
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changeset
|
2297 NOT_PRODUCT(_equals++); |
|
1187
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diff
changeset
|
2298 if (fp.equals(e->fingerprint())) { |
|
1263
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changeset
|
2299 #ifndef PRODUCT |
|
1187
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changeset
|
2300 if (fp.is_compact()) _compact++; |
|
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diff
changeset
|
2301 _hits++; |
|
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never
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diff
changeset
|
2302 #endif |
|
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diff
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|
2303 return e; |
|
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never
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diff
changeset
|
2304 } |
|
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diff
changeset
|
2305 } |
|
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diff
changeset
|
2306 } |
|
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diff
changeset
|
2307 return NULL; |
|
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never
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diff
changeset
|
2308 } |
|
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diff
changeset
|
2309 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
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changeset
|
2310 #ifndef PRODUCT |
|
1187
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never
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diff
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|
2311 void print_statistics() { |
|
cf0685d550f1
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never
parents:
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diff
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|
2312 ResourceMark rm; |
|
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never
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diff
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|
2313 int longest = 0; |
|
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never
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diff
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|
2314 int empty = 0; |
|
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never
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diff
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|
2315 int total = 0; |
|
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never
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diff
changeset
|
2316 int nonempty = 0; |
|
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never
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diff
changeset
|
2317 for (int index = 0; index < table_size(); index++) { |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2318 int count = 0; |
|
cf0685d550f1
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never
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diff
changeset
|
2319 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2320 count++; |
|
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never
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diff
changeset
|
2321 } |
|
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changeset
|
2322 if (count != 0) nonempty++; |
|
cf0685d550f1
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never
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1142
diff
changeset
|
2323 if (count == 0) empty++; |
|
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diff
changeset
|
2324 if (count > longest) longest = count; |
|
cf0685d550f1
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never
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diff
changeset
|
2325 total += count; |
|
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never
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|
2326 } |
|
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diff
changeset
|
2327 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
cf0685d550f1
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never
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diff
changeset
|
2328 empty, longest, total, total / (double)nonempty); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2329 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2330 _lookups, _buckets, _equals, _hits, _compact); |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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|
2331 } |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
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|
2332 #endif |
|
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never
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diff
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|
2333 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2334 |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2335 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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1257
diff
changeset
|
2336 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2337 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2338 int AdapterHandlerTable::_lookups; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2339 int AdapterHandlerTable::_buckets; |
|
cf0685d550f1
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never
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diff
changeset
|
2340 int AdapterHandlerTable::_equals; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2341 int AdapterHandlerTable::_hits; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2342 int AdapterHandlerTable::_compact; |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2343 |
|
1681
126ea7725993
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bobv
parents:
1644
diff
changeset
|
2344 #endif |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2345 |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2346 class AdapterHandlerTableIterator : public StackObj { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2347 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2348 AdapterHandlerTable* _table; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2349 int _index; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2350 AdapterHandlerEntry* _current; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2351 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2352 void scan() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2353 while (_index < _table->table_size()) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2354 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2355 _index++; |
|
1187
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|
2356 if (a != NULL) { |
|
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|
2357 _current = a; |
|
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|
2358 return; |
|
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|
2359 } |
|
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|
2360 } |
|
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|
2361 } |
|
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|
2362 |
|
cf0685d550f1
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|
2363 public: |
|
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|
2364 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
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|
2365 scan(); |
|
cf0685d550f1
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|
2366 } |
|
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|
2367 bool has_next() { |
|
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|
2368 return _current != NULL; |
|
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|
2369 } |
|
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|
2370 AdapterHandlerEntry* next() { |
|
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|
2371 if (_current != NULL) { |
|
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|
2372 AdapterHandlerEntry* result = _current; |
|
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|
2373 _current = _current->next(); |
|
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|
2374 if (_current == NULL) scan(); |
|
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|
2375 return result; |
|
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|
2376 } else { |
|
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|
2377 return NULL; |
|
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|
2378 } |
|
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|
2379 } |
|
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|
2380 }; |
|
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|
2381 |
|
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|
2382 |
| 0 | 2383 // --------------------------------------------------------------------------- |
| 2384 // Implementation of AdapterHandlerLibrary | |
|
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|
2385 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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2386 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2387 const int AdapterHandlerLibrary_size = 16*K; |
|
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2388 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
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|
2389 |
|
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|
2390 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
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|
2391 // Should be called only when AdapterHandlerLibrary_lock is active. |
|
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|
2392 if (_buffer == NULL) // Initialize lazily |
|
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|
2393 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
|
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|
2394 return _buffer; |
|
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|
2395 } |
| 0 | 2396 |
| 2397 void AdapterHandlerLibrary::initialize() { | |
|
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|
2398 if (_adapters != NULL) return; |
|
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|
2399 _adapters = new AdapterHandlerTable(); |
| 0 | 2400 |
| 2401 // Create a special handler for abstract methods. Abstract methods | |
| 2402 // are never compiled so an i2c entry is somewhat meaningless, but | |
| 2403 // fill it in with something appropriate just in case. Pass handle | |
| 2404 // wrong method for the c2i transitions. | |
| 2405 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
|
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|
2406 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
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|
2407 StubRoutines::throw_AbstractMethodError_entry(), |
|
cf0685d550f1
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|
2408 wrong_method, wrong_method); |
| 0 | 2409 } |
| 2410 | |
|
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|
2411 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
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|
2412 address i2c_entry, |
|
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|
2413 address c2i_entry, |
|
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|
2414 address c2i_unverified_entry) { |
|
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|
2415 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2416 } |
|
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|
2417 |
|
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|
2418 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
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|
2419 // Use customized signature handler. Need to lock around updates to |
|
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|
2420 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
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|
2421 // and a single writer: this could be fixed if it becomes a |
|
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|
2422 // problem). |
| 0 | 2423 |
| 2424 // Get the address of the ic_miss handlers before we grab the | |
| 2425 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2426 // was caused by the initialization of the stubs happening | |
| 2427 // while we held the lock and then notifying jvmti while | |
| 2428 // holding it. This just forces the initialization to be a little | |
| 2429 // earlier. | |
| 2430 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2431 assert(ic_miss != NULL, "must have handler"); | |
| 2432 | |
|
1187
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|
2433 ResourceMark rm; |
|
cf0685d550f1
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|
2434 |
| 1748 | 2435 NOT_PRODUCT(int insts_size); |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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|
2436 AdapterBlob* B = NULL; |
|
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|
2437 AdapterHandlerEntry* entry = NULL; |
|
1187
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|
2438 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2439 { |
| 2440 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2441 // make sure data structure is initialized | |
| 2442 initialize(); | |
| 2443 | |
| 2444 if (method->is_abstract()) { | |
|
1187
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|
2445 return _abstract_method_handler; |
| 0 | 2446 } |
| 2447 | |
|
1187
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changeset
|
2448 // Fill in the signature array, for the calling-convention call. |
|
cf0685d550f1
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changeset
|
2449 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2450 |
|
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changeset
|
2451 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
cf0685d550f1
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|
2452 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
cf0685d550f1
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diff
changeset
|
2453 int i = 0; |
|
cf0685d550f1
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diff
changeset
|
2454 if (!method->is_static()) // Pass in receiver first |
|
cf0685d550f1
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changeset
|
2455 sig_bt[i++] = T_OBJECT; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2456 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2457 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2458 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
cf0685d550f1
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changeset
|
2459 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2460 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2461 assert(i == total_args_passed, ""); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2462 |
|
1207
74c848d437ab
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diff
changeset
|
2463 // Lookup method signature's fingerprint |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2464 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
1187
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diff
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|
2465 |
|
1207
74c848d437ab
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diff
changeset
|
2466 #ifdef ASSERT |
|
74c848d437ab
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diff
changeset
|
2467 AdapterHandlerEntry* shared_entry = NULL; |
|
74c848d437ab
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changeset
|
2468 if (VerifyAdapterSharing && entry != NULL) { |
|
74c848d437ab
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parents:
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diff
changeset
|
2469 shared_entry = entry; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2470 entry = NULL; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2471 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2472 #endif |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2473 |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2474 if (entry != NULL) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2475 return entry; |
| 0 | 2476 } |
| 2477 | |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2478 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2479 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2480 |
|
1187
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changeset
|
2481 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
1207
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changeset
|
2482 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
1187
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|
2483 |
| 0 | 2484 // Create I2C & C2I handlers |
| 2485 | |
|
1299
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|
2486 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
742
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|
2487 if (buf != NULL) { |
| 1748 | 2488 CodeBuffer buffer(buf); |
|
742
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changeset
|
2489 short buffer_locs[20]; |
|
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changeset
|
2490 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
|
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|
2491 sizeof(buffer_locs)/sizeof(relocInfo)); |
|
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changeset
|
2492 MacroAssembler _masm(&buffer); |
|
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|
2493 |
|
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changeset
|
2494 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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|
2495 total_args_passed, |
|
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changeset
|
2496 comp_args_on_stack, |
|
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changeset
|
2497 sig_bt, |
|
1187
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changeset
|
2498 regs, |
|
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|
2499 fingerprint); |
| 0 | 2500 |
|
1207
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diff
changeset
|
2501 #ifdef ASSERT |
|
74c848d437ab
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|
2502 if (VerifyAdapterSharing) { |
|
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changeset
|
2503 if (shared_entry != NULL) { |
| 1748 | 2504 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
|
1207
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|
2505 "code must match"); |
|
74c848d437ab
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diff
changeset
|
2506 // Release the one just created and return the original |
|
74c848d437ab
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diff
changeset
|
2507 _adapters->free_entry(entry); |
|
74c848d437ab
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diff
changeset
|
2508 return shared_entry; |
|
74c848d437ab
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changeset
|
2509 } else { |
| 1748 | 2510 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
|
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|
2511 } |
|
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|
2512 } |
|
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diff
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|
2513 #endif |
|
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|
2514 |
|
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9eba43136cb5
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|
2515 B = AdapterBlob::create(&buffer); |
| 1748 | 2516 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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|
2517 } |
| 28 | 2518 if (B == NULL) { |
| 2519 // CodeCache is full, disable compilation | |
| 2520 // Ought to log this but compile log is only per compile thread | |
| 2521 // and we're some non descript Java thread. | |
| 1202 | 2522 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2523 CompileBroker::handle_full_code_cache(); | |
|
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|
2524 return NULL; // Out of CodeCache space |
| 28 | 2525 } |
| 1748 | 2526 entry->relocate(B->content_begin()); |
| 0 | 2527 #ifndef PRODUCT |
| 2528 // debugging suppport | |
| 2529 if (PrintAdapterHandlers) { | |
| 2530 tty->cr(); | |
|
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|
2531 tty->print_cr("i2c argument handler #%d for: %s %s (fingerprint = %s, %d bytes generated)", |
|
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|
2532 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
| 1748 | 2533 method->signature()->as_C_string(), fingerprint->as_string(), insts_size ); |
| 0 | 2534 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
| 1748 | 2535 Disassembler::decode(entry->get_i2c_entry(), entry->get_i2c_entry() + insts_size); |
| 0 | 2536 } |
| 2537 #endif | |
| 2538 | |
|
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|
2539 _adapters->add(entry); |
| 0 | 2540 } |
| 2541 // Outside of the lock | |
| 2542 if (B != NULL) { | |
| 2543 char blob_id[256]; | |
| 2544 jio_snprintf(blob_id, | |
| 2545 sizeof(blob_id), | |
|
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|
2546 "%s(%s)@" PTR_FORMAT, |
|
1299
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|
2547 B->name(), |
|
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|
2548 fingerprint->as_string(), |
| 1748 | 2549 B->content_begin()); |
| 2550 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
| 0 | 2551 |
| 2552 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 1748 | 2553 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
| 0 | 2554 } |
| 2555 } | |
|
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|
2556 return entry; |
| 0 | 2557 } |
| 2558 | |
| 2559 void AdapterHandlerEntry::relocate(address new_base) { | |
| 2560 ptrdiff_t delta = new_base - _i2c_entry; | |
| 2561 _i2c_entry += delta; | |
| 2562 _c2i_entry += delta; | |
| 2563 _c2i_unverified_entry += delta; | |
| 2564 } | |
| 2565 | |
|
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|
2566 |
|
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|
2567 void AdapterHandlerEntry::deallocate() { |
|
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|
2568 delete _fingerprint; |
|
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|
2569 #ifdef ASSERT |
|
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|
2570 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code); |
|
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|
2571 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig); |
|
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|
2572 #endif |
|
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|
2573 } |
|
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|
2574 |
|
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|
2575 |
|
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diff
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|
2576 #ifdef ASSERT |
|
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|
2577 // Capture the code before relocation so that it can be compared |
|
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diff
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|
2578 // against other versions. If the code is captured after relocation |
|
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diff
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|
2579 // then relative instructions won't be equivalent. |
|
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|
2580 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
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|
2581 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length); |
|
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|
2582 _code_length = length; |
|
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|
2583 memcpy(_saved_code, buffer, length); |
|
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|
2584 _total_args_passed = total_args_passed; |
|
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diff
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|
2585 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed); |
|
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|
2586 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
|
74c848d437ab
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|
2587 } |
|
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|
2588 |
|
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|
2589 |
|
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diff
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|
2590 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
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|
2591 if (length != _code_length) { |
|
74c848d437ab
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diff
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|
2592 return false; |
|
74c848d437ab
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diff
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|
2593 } |
|
74c848d437ab
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diff
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|
2594 for (int i = 0; i < length; i++) { |
|
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diff
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|
2595 if (buffer[i] != _saved_code[i]) { |
|
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diff
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|
2596 return false; |
|
74c848d437ab
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|
2597 } |
|
74c848d437ab
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diff
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|
2598 } |
|
74c848d437ab
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diff
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|
2599 return true; |
|
74c848d437ab
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|
2600 } |
|
74c848d437ab
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diff
changeset
|
2601 #endif |
|
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|
2602 |
|
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|
2603 |
| 0 | 2604 // Create a native wrapper for this native method. The wrapper converts the |
| 2605 // java compiled calling convention to the native convention, handlizes | |
| 2606 // arguments, and transitions to native. On return from the native we transition | |
| 2607 // back to java blocking if a safepoint is in progress. | |
|
2405
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diff
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|
2608 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
| 0 | 2609 ResourceMark rm; |
| 2610 nmethod* nm = NULL; | |
| 2611 | |
| 2612 assert(method->has_native_function(), "must have something valid to call!"); | |
| 2613 | |
| 2614 { | |
| 2615 // perform the work while holding the lock, but perform any printing outside the lock | |
| 2616 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2617 // See if somebody beat us to it | |
| 2618 nm = method->code(); | |
| 2619 if (nm) { | |
| 2620 return nm; | |
| 2621 } | |
| 2622 | |
|
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|
2623 ResourceMark rm; |
| 0 | 2624 |
|
742
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|
2625 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
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diff
changeset
|
2626 if (buf != NULL) { |
| 1748 | 2627 CodeBuffer buffer(buf); |
|
742
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changeset
|
2628 double locs_buf[20]; |
|
45463a04ca27
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diff
changeset
|
2629 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
45463a04ca27
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diff
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|
2630 MacroAssembler _masm(&buffer); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2631 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2632 // Fill in the signature array, for the calling-convention call. |
|
45463a04ca27
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|
2633 int total_args_passed = method->size_of_parameters(); |
| 0 | 2634 |
|
742
45463a04ca27
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|
2635 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed); |
|
45463a04ca27
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diff
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|
2636 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair,total_args_passed); |
|
45463a04ca27
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changeset
|
2637 int i=0; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2638 if( !method->is_static() ) // Pass in receiver first |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2639 sig_bt[i++] = T_OBJECT; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2640 SignatureStream ss(method->signature()); |
|
45463a04ca27
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|
2641 for( ; !ss.at_return_type(); ss.next()) { |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2642 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
45463a04ca27
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|
2643 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
45463a04ca27
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|
2644 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2645 } |
|
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|
2646 assert( i==total_args_passed, "" ); |
|
45463a04ca27
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|
2647 BasicType ret_type = ss.type(); |
|
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|
2648 |
|
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|
2649 // Now get the compiled-Java layout as input arguments |
|
45463a04ca27
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diff
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|
2650 int comp_args_on_stack; |
|
45463a04ca27
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kvn
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changeset
|
2651 comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
45463a04ca27
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|
2652 |
|
45463a04ca27
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|
2653 // Generate the compiled-to-native wrapper code |
|
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changeset
|
2654 nm = SharedRuntime::generate_native_wrapper(&_masm, |
|
45463a04ca27
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|
2655 method, |
|
2405
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|
2656 compile_id, |
|
742
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|
2657 total_args_passed, |
|
45463a04ca27
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changeset
|
2658 comp_args_on_stack, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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changeset
|
2659 sig_bt,regs, |
|
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|
2660 ret_type); |
| 0 | 2661 } |
| 2662 } | |
| 2663 | |
| 2664 // Must unlock before calling set_code | |
|
1728
a62d332029cf
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|
2665 |
| 0 | 2666 // Install the generated code. |
| 2667 if (nm != NULL) { | |
|
2405
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twisti
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2321
diff
changeset
|
2668 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2669 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2670 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2671 } |
| 0 | 2672 method->set_code(method, nm); |
| 2673 nm->post_compiled_method_load_event(); | |
| 2674 } else { | |
| 2675 // CodeCache is full, disable compilation | |
| 1202 | 2676 CompileBroker::handle_full_code_cache(); |
| 0 | 2677 } |
| 2678 return nm; | |
| 2679 } | |
| 2680 | |
|
4873
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4872
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|
2681 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
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|
2682 assert(thread == JavaThread::current(), "must be"); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
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|
2683 // The code is about to enter a JNI lazy critical native method and |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
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changeset
|
2684 // _needs_gc is true, so if this thread is already in a critical |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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|
2685 // section then just return, otherwise this thread should block |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
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|
2686 // until needs_gc has been cleared. |
|
0382d2b469b2
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4872
diff
changeset
|
2687 if (thread->in_critical()) { |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
changeset
|
2688 return; |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2689 } |
|
0382d2b469b2
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4872
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changeset
|
2690 // Lock and unlock a critical section to give the system a chance to block |
|
0382d2b469b2
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changeset
|
2691 GC_locker::lock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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|
2692 GC_locker::unlock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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|
2693 JRT_END |
|
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2694 |
|
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2695 #ifdef HAVE_DTRACE_H |
|
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2696 // Create a dtrace nmethod for this method. The wrapper converts the |
|
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2697 // java compiled calling convention to the native convention, makes a dummy call |
|
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2698 // (actually nops for the size of the call instruction, which become a trap if |
|
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2699 // probe is enabled). The returns to the caller. Since this all looks like a |
|
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2700 // leaf no thread transition is needed. |
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2701 |
|
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2702 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
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2703 ResourceMark rm; |
|
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2704 nmethod* nm = NULL; |
|
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2705 |
|
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2706 if (PrintCompilation) { |
|
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2707 ttyLocker ttyl; |
|
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2708 tty->print("--- n%s "); |
|
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2709 method->print_short_name(tty); |
|
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2710 if (method->is_static()) { |
|
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2711 tty->print(" (static)"); |
|
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2712 } |
|
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2713 tty->cr(); |
|
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2714 } |
|
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2715 |
|
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2716 { |
|
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2717 // perform the work while holding the lock, but perform any printing |
|
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2718 // outside the lock |
|
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2719 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
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2720 // See if somebody beat us to it |
|
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2721 nm = method->code(); |
|
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2722 if (nm) { |
|
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2723 return nm; |
|
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2724 } |
|
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|
2725 |
|
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|
2726 ResourceMark rm; |
|
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|
2727 |
|
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|
2728 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2729 if (buf != NULL) { |
| 1748 | 2730 CodeBuffer buffer(buf); |
|
742
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2731 // Need a few relocation entries |
|
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|
2732 double locs_buf[20]; |
|
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|
2733 buffer.insts()->initialize_shared_locs( |
|
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2734 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
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2735 MacroAssembler _masm(&buffer); |
|
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2736 |
|
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|
2737 // Generate the compiled-to-native wrapper code |
|
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|
2738 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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2739 } |
|
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2740 } |
|
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2741 return nm; |
|
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2742 } |
|
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2743 |
|
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2744 // the dtrace method needs to convert java lang string to utf8 string. |
|
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2745 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
|
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2746 typeArrayOop jlsValue = java_lang_String::value(src); |
|
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2747 int jlsOffset = java_lang_String::offset(src); |
|
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2748 int jlsLen = java_lang_String::length(src); |
|
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2749 jchar* jlsPos = (jlsLen == 0) ? NULL : |
|
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2750 jlsValue->char_at_addr(jlsOffset); |
|
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2751 assert(typeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
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2752 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
|
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2753 } |
|
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2754 #endif // ndef HAVE_DTRACE_H |
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2755 |
| 0 | 2756 // ------------------------------------------------------------------------- |
| 2757 // Java-Java calling convention | |
| 2758 // (what you use when Java calls Java) | |
| 2759 | |
| 2760 //------------------------------name_for_receiver---------------------------------- | |
| 2761 // For a given signature, return the VMReg for parameter 0. | |
| 2762 VMReg SharedRuntime::name_for_receiver() { | |
| 2763 VMRegPair regs; | |
| 2764 BasicType sig_bt = T_OBJECT; | |
| 2765 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2766 // Return argument 0 register. In the LP64 build pointers | |
| 2767 // take 2 registers, but the VM wants only the 'main' name. | |
| 2768 return regs.first(); | |
| 2769 } | |
| 2770 | |
|
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2771 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
| 0 | 2772 // This method is returning a data structure allocating as a |
| 2773 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2774 char *s = sig->as_C_string(); | |
| 2775 int len = (int)strlen(s); | |
| 2776 *s++; len--; // Skip opening paren | |
| 2777 char *t = s+len; | |
| 2778 while( *(--t) != ')' ) ; // Find close paren | |
| 2779 | |
| 2780 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2781 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2782 int cnt = 0; | |
|
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|
2783 if (has_receiver) { |
| 0 | 2784 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2785 } | |
| 2786 | |
| 2787 while( s < t ) { | |
| 2788 switch( *s++ ) { // Switch on signature character | |
| 2789 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2790 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2791 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2792 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2793 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2794 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2795 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2796 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2797 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2798 case 'L': // Oop | |
| 2799 while( *s++ != ';' ) ; // Skip signature | |
| 2800 sig_bt[cnt++] = T_OBJECT; | |
| 2801 break; | |
| 2802 case '[': { // Array | |
| 2803 do { // Skip optional size | |
| 2804 while( *s >= '0' && *s <= '9' ) s++; | |
| 2805 } while( *s++ == '[' ); // Nested arrays? | |
| 2806 // Skip element type | |
| 2807 if( s[-1] == 'L' ) | |
| 2808 while( *s++ != ';' ) ; // Skip signature | |
| 2809 sig_bt[cnt++] = T_ARRAY; | |
| 2810 break; | |
| 2811 } | |
| 2812 default : ShouldNotReachHere(); | |
| 2813 } | |
| 2814 } | |
| 2815 assert( cnt < 256, "grow table size" ); | |
| 2816 | |
| 2817 int comp_args_on_stack; | |
| 2818 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2819 | |
| 2820 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2821 // we must add that in to get "true" stack offsets. | |
| 2822 | |
| 2823 if (comp_args_on_stack) { | |
| 2824 for (int i = 0; i < cnt; i++) { | |
| 2825 VMReg reg1 = regs[i].first(); | |
| 2826 if( reg1->is_stack()) { | |
| 2827 // Yuck | |
| 2828 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2829 } | |
| 2830 VMReg reg2 = regs[i].second(); | |
| 2831 if( reg2->is_stack()) { | |
| 2832 // Yuck | |
| 2833 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2834 } | |
| 2835 regs[i].set_pair(reg2, reg1); | |
| 2836 } | |
| 2837 } | |
| 2838 | |
| 2839 // results | |
| 2840 *arg_size = cnt; | |
| 2841 return regs; | |
| 2842 } | |
| 2843 | |
| 2844 // OSR Migration Code | |
| 2845 // | |
| 2846 // This code is used convert interpreter frames into compiled frames. It is | |
| 2847 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2848 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2849 // active locks are inflated to allow them to move. The displaced headers and | |
| 2850 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2851 // back to the compiled code. The compiled code then pops the current | |
| 2852 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2853 // copies the interpreter locals and displaced headers where it wants. | |
| 2854 // Finally it calls back to free the temp buffer. | |
| 2855 // | |
| 2856 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2857 | |
| 2858 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2859 | |
| 2860 #ifdef IA64 | |
| 2861 ShouldNotReachHere(); // NYI | |
| 2862 #endif /* IA64 */ | |
| 2863 | |
| 2864 // | |
| 2865 // This code is dependent on the memory layout of the interpreter local | |
| 2866 // array and the monitors. On all of our platforms the layout is identical | |
| 2867 // so this code is shared. If some platform lays the their arrays out | |
| 2868 // differently then this code could move to platform specific code or | |
| 2869 // the code here could be modified to copy items one at a time using | |
| 2870 // frame accessor methods and be platform independent. | |
| 2871 | |
| 2872 frame fr = thread->last_frame(); | |
| 2873 assert( fr.is_interpreted_frame(), "" ); | |
| 2874 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2875 | |
| 2876 // Figure out how many monitors are active. | |
| 2877 int active_monitor_count = 0; | |
| 2878 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2879 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2880 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2881 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2882 } | |
| 2883 | |
| 2884 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2885 // could double check it. | |
| 2886 | |
| 2887 methodOop moop = fr.interpreter_frame_method(); | |
| 2888 int max_locals = moop->max_locals(); | |
| 2889 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2890 int buf_size_words = max_locals + active_monitor_count*2; | |
| 2891 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words); | |
| 2892 | |
| 2893 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2894 // Since there's no GC I can copy the oops blindly. | |
| 2895 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2896 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2897 (HeapWord*)&buf[0], |
| 2898 max_locals); | |
| 2899 | |
| 2900 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2901 int i = max_locals; | |
| 2902 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2903 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2904 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2905 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2906 BasicLock *lock = kptr2->lock(); | |
| 2907 // Inflate so the displaced header becomes position-independent | |
| 2908 if (lock->displaced_header()->is_unlocked()) | |
| 2909 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2910 // Now the displaced header is free to move | |
| 2911 buf[i++] = (intptr_t)lock->displaced_header(); | |
| 2912 buf[i++] = (intptr_t)kptr2->obj(); | |
| 2913 } | |
| 2914 } | |
| 2915 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2916 | |
| 2917 return buf; | |
| 2918 JRT_END | |
| 2919 | |
| 2920 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 2921 FREE_C_HEAP_ARRAY(intptr_t,buf); | |
| 2922 JRT_END | |
| 2923 | |
| 2924 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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2925 AdapterHandlerTableIterator iter(_adapters); |
|
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|
2926 while (iter.has_next()) { |
|
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|
2927 AdapterHandlerEntry* a = iter.next(); |
|
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|
2928 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 2929 } |
| 2930 return false; | |
| 2931 } | |
| 2932 | |
|
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|
2933 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
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|
2934 AdapterHandlerTableIterator iter(_adapters); |
|
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|
2935 while (iter.has_next()) { |
|
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|
2936 AdapterHandlerEntry* a = iter.next(); |
|
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|
2937 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) { |
|
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|
2938 st->print("Adapter for signature: "); |
|
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2939 st->print_cr("%s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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2940 a->fingerprint()->as_string(), |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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2941 a->get_i2c_entry(), a->get_c2i_entry(), a->get_c2i_unverified_entry()); |
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2942 |
| 0 | 2943 return; |
| 2944 } | |
| 2945 } | |
| 2946 assert(false, "Should have found handler"); | |
| 2947 } | |
|
1187
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|
2948 |
|
1681
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6953477: Increase portability and flexibility of building Hotspot
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|
2949 #ifndef PRODUCT |
|
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|
2950 |
|
1187
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|
2951 void AdapterHandlerLibrary::print_statistics() { |
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|
2952 _adapters->print_statistics(); |
|
cf0685d550f1
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|
2953 } |
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|
2954 |
| 0 | 2955 #endif /* PRODUCT */ |