Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 3753:cba7b5c2d53f
7045514: SPARC assembly code for JSR 292 ricochet frames
Reviewed-by: kvn, jrose
| author | never |
|---|---|
| date | Fri, 03 Jun 2011 22:31:43 -0700 |
| parents | 167b70ff3abc |
| children | 38fa55e5e792 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2142 | 2 * Copyright (c) 1997, 2011, 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 #ifndef TARGET_ARCH_NYI_6939861 |
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125 // allocate space for the code |
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126 ResourceMark rm; |
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127 // setup code generation tools |
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128 CodeBuffer buffer("ricochet_blob", 256 LP64_ONLY(+ 256), 256); // XXX x86 LP64L: 512, 512 |
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129 MacroAssembler* masm = new MacroAssembler(&buffer); |
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130 |
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131 int bounce_offset = -1, exception_offset = -1, frame_size_in_words = -1; |
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132 MethodHandles::RicochetFrame::generate_ricochet_blob(masm, &bounce_offset, &exception_offset, &frame_size_in_words); |
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133 |
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134 // ------------- |
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135 // make sure all code is generated |
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136 masm->flush(); |
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137 |
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138 // failed to generate? |
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139 if (bounce_offset < 0 || exception_offset < 0 || frame_size_in_words < 0) { |
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140 assert(false, "bad ricochet blob"); |
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141 return; |
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142 } |
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143 |
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144 _ricochet_blob = RicochetBlob::create(&buffer, bounce_offset, exception_offset, frame_size_in_words); |
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145 #endif |
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146 } |
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147 |
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148 |
| 0 | 149 #include <math.h> |
| 150 | |
| 151 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); | |
| 152 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 153 char*, int, char*, int, char*, int); | |
| 154 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 155 char*, int, char*, int, char*, int); | |
| 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(); | |
| 662 do { | |
| 663 bool skip_scope_increment = false; | |
| 664 // exception handler lookup | |
| 665 KlassHandle ek (THREAD, exception->klass()); | |
| 666 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
| 667 if (HAS_PENDING_EXCEPTION) { | |
| 668 // We threw an exception while trying to find the exception handler. | |
| 669 // Transfer the new exception to the exception handle which will | |
| 670 // be set into thread local storage, and do another lookup for an | |
| 671 // exception handler for this exception, this time starting at the | |
| 672 // BCI of the exception handler which caused the exception to be | |
| 673 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 674 // argument to ensure that the correct exception is thrown (4870175). | |
| 675 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 676 CLEAR_PENDING_EXCEPTION; | |
| 677 if (handler_bci >= 0) { | |
| 678 bci = handler_bci; | |
| 679 handler_bci = -1; | |
| 680 skip_scope_increment = true; | |
| 681 } | |
| 682 } | |
| 683 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { | |
| 684 sd = sd->sender(); | |
| 685 if (sd != NULL) { | |
| 686 bci = sd->bci(); | |
| 687 } | |
| 688 ++scope_depth; | |
| 689 } | |
| 690 } while (!top_frame_only && handler_bci < 0 && sd != NULL); | |
| 691 } | |
| 692 | |
| 693 // found handling method => lookup exception handler | |
| 1748 | 694 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 695 |
| 696 ExceptionHandlerTable table(nm); | |
| 697 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 698 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 699 // Allow abbreviated catch tables. The idea is to allow a method | |
| 700 // to materialize its exceptions without committing to the exact | |
| 701 // routing of exceptions. In particular this is needed for adding | |
| 702 // a synthethic handler to unlock monitors when inlining | |
| 703 // synchonized methods since the unlock path isn't represented in | |
| 704 // the bytecodes. | |
| 705 t = table.entry_for(catch_pco, -1, 0); | |
| 706 } | |
| 707 | |
|
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708 #ifdef COMPILER1 |
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709 if (t == NULL && nm->is_compiled_by_c1()) { |
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710 assert(nm->unwind_handler_begin() != NULL, ""); |
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711 return nm->unwind_handler_begin(); |
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712 } |
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713 #endif |
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714 |
| 0 | 715 if (t == NULL) { |
| 716 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 717 tty->print_cr(" Exception:"); | |
| 718 exception->print(); | |
| 719 tty->cr(); | |
| 720 tty->print_cr(" Compiled exception table :"); | |
| 721 table.print(); | |
| 722 nm->print_code(); | |
| 723 guarantee(false, "missing exception handler"); | |
| 724 return NULL; | |
| 725 } | |
| 726 | |
| 1748 | 727 return nm->code_begin() + t->pco(); |
| 0 | 728 } |
| 729 | |
| 730 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 731 // These errors occur only at call sites | |
| 732 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 733 JRT_END | |
| 734 | |
|
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735 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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736 // These errors occur only at call sites |
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737 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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738 JRT_END |
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739 |
| 0 | 740 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 741 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 742 JRT_END | |
| 743 | |
| 744 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 745 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 746 JRT_END | |
| 747 | |
| 748 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 749 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 750 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 751 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 752 JRT_END | |
| 753 | |
| 754 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 755 // We avoid using the normal exception construction in this case because | |
| 756 // it performs an upcall to Java, and we're already out of stack space. | |
| 757 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
| 758 oop exception_oop = instanceKlass::cast(k)->allocate_instance(CHECK); | |
| 759 Handle exception (thread, exception_oop); | |
| 760 if (StackTraceInThrowable) { | |
| 761 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 762 } | |
| 763 throw_and_post_jvmti_exception(thread, exception); | |
| 764 JRT_END | |
| 765 | |
| 766 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, | |
| 767 address pc, | |
| 768 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 769 { | |
| 770 address target_pc = NULL; | |
| 771 | |
| 772 if (Interpreter::contains(pc)) { | |
| 773 #ifdef CC_INTERP | |
| 774 // C++ interpreter doesn't throw implicit exceptions | |
| 775 ShouldNotReachHere(); | |
| 776 #else | |
| 777 switch (exception_kind) { | |
| 778 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 779 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 780 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 781 default: ShouldNotReachHere(); | |
| 782 } | |
| 783 #endif // !CC_INTERP | |
| 784 } else { | |
| 785 switch (exception_kind) { | |
| 786 case STACK_OVERFLOW: { | |
| 787 // Stack overflow only occurs upon frame setup; the callee is | |
| 788 // going to be unwound. Dispatch to a shared runtime stub | |
| 789 // which will cause the StackOverflowError to be fabricated | |
| 790 // and processed. | |
| 791 // For stack overflow in deoptimization blob, cleanup thread. | |
| 792 if (thread->deopt_mark() != NULL) { | |
| 793 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 794 } | |
| 795 return StubRoutines::throw_StackOverflowError_entry(); | |
| 796 } | |
| 797 | |
| 798 case IMPLICIT_NULL: { | |
| 799 if (VtableStubs::contains(pc)) { | |
| 800 // We haven't yet entered the callee frame. Fabricate an | |
| 801 // exception and begin dispatching it in the caller. Since | |
| 802 // the caller was at a call site, it's safe to destroy all | |
| 803 // caller-saved registers, as these entry points do. | |
| 804 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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805 |
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806 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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807 if (vt_stub == NULL) return NULL; |
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808 |
| 0 | 809 if (vt_stub->is_abstract_method_error(pc)) { |
| 810 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 811 return StubRoutines::throw_AbstractMethodError_entry(); | |
| 812 } else { | |
| 813 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 814 } | |
| 815 } else { | |
| 816 CodeBlob* cb = CodeCache::find_blob(pc); | |
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817 |
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818 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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819 if (cb == NULL) return NULL; |
| 0 | 820 |
| 821 // Exception happened in CodeCache. Must be either: | |
| 822 // 1. Inline-cache check in C2I handler blob, | |
| 823 // 2. Inline-cache check in nmethod, or | |
| 824 // 3. Implict null exception in nmethod | |
| 825 | |
| 826 if (!cb->is_nmethod()) { | |
|
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827 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
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828 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
| 0 | 829 // There is no handler here, so we will simply unwind. |
| 830 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 831 } | |
| 832 | |
| 833 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 834 nmethod* nm = (nmethod*)cb; | |
| 835 if (nm->inlinecache_check_contains(pc)) { | |
| 836 // exception happened inside inline-cache check code | |
| 837 // => the nmethod is not yet active (i.e., the frame | |
| 838 // is not set up yet) => use return address pushed by | |
| 839 // caller => don't push another return address | |
| 840 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 841 } | |
| 842 | |
| 843 #ifndef PRODUCT | |
| 844 _implicit_null_throws++; | |
| 845 #endif | |
| 846 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 847 // If there's an unexpected fault, target_pc might be NULL, |
| 848 // in which case we want to fall through into the normal | |
| 849 // error handling code. | |
| 0 | 850 } |
| 851 | |
| 852 break; // fall through | |
| 853 } | |
| 854 | |
| 855 | |
| 856 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 857 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 858 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 859 #ifndef PRODUCT | |
| 860 _implicit_div0_throws++; | |
| 861 #endif | |
| 862 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 863 // If there's an unexpected fault, target_pc might be NULL, |
| 864 // in which case we want to fall through into the normal | |
| 865 // error handling code. | |
| 0 | 866 break; // fall through |
| 867 } | |
| 868 | |
| 869 default: ShouldNotReachHere(); | |
| 870 } | |
| 871 | |
| 872 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 873 | |
| 874 // for AbortVMOnException flag | |
| 875 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 876 if (exception_kind == IMPLICIT_NULL) { | |
| 877 Events::log("Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); | |
| 878 } else { | |
| 879 Events::log("Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); | |
| 880 } | |
| 881 return target_pc; | |
| 882 } | |
| 883 | |
| 884 ShouldNotReachHere(); | |
| 885 return NULL; | |
| 886 } | |
| 887 | |
| 888 | |
| 889 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
| 890 { | |
| 891 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
| 892 } | |
| 893 JNI_END | |
| 894 | |
| 895 | |
| 896 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 897 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 898 } | |
| 899 | |
| 900 | |
| 901 #ifndef PRODUCT | |
| 902 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 903 const frame f = thread->last_frame(); | |
| 904 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 905 #ifndef PRODUCT | |
| 906 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 907 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 908 #endif // !PRODUCT | |
| 909 return preserve_this_value; | |
| 910 JRT_END | |
| 911 #endif // !PRODUCT | |
| 912 | |
| 913 | |
| 914 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 915 os::yield_all(attempts); | |
| 916 JRT_END | |
| 917 | |
| 918 | |
| 919 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 920 assert(obj->is_oop(), "must be a valid oop"); | |
| 921 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
| 922 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
| 923 JRT_END | |
| 924 | |
| 925 | |
| 926 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 927 if (thread != NULL) { | |
| 928 if (thread->is_Java_thread()) { | |
| 929 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 930 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 931 } | |
| 932 } | |
| 933 return 0; | |
| 934 } | |
| 935 | |
| 936 /** | |
| 937 * This function ought to be a void function, but cannot be because | |
| 938 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 939 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 940 */ | |
| 941 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 942 return dtrace_object_alloc_base(Thread::current(), o); | |
| 943 } | |
| 944 | |
| 945 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 946 assert(DTraceAllocProbes, "wrong call"); | |
| 947 Klass* klass = o->blueprint(); | |
| 948 int size = o->size(); | |
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949 Symbol* name = klass->name(); |
| 0 | 950 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 951 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 952 return 0; | |
| 953 } | |
| 954 | |
| 955 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
| 956 JavaThread* thread, methodOopDesc* method)) | |
| 957 assert(DTraceMethodProbes, "wrong call"); | |
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958 Symbol* kname = method->klass_name(); |
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959 Symbol* name = method->name(); |
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960 Symbol* sig = method->signature(); |
| 0 | 961 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 962 kname->bytes(), kname->utf8_length(), | |
| 963 name->bytes(), name->utf8_length(), | |
| 964 sig->bytes(), sig->utf8_length()); | |
| 965 return 0; | |
| 966 JRT_END | |
| 967 | |
| 968 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
| 969 JavaThread* thread, methodOopDesc* method)) | |
| 970 assert(DTraceMethodProbes, "wrong call"); | |
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971 Symbol* kname = method->klass_name(); |
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972 Symbol* name = method->name(); |
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973 Symbol* sig = method->signature(); |
| 0 | 974 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 975 kname->bytes(), kname->utf8_length(), | |
| 976 name->bytes(), name->utf8_length(), | |
| 977 sig->bytes(), sig->utf8_length()); | |
| 978 return 0; | |
| 979 JRT_END | |
| 980 | |
| 981 | |
| 982 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 983 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 984 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 985 // vtable updates, etc. Caller frame must be compiled. | |
| 986 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 987 ResourceMark rm(THREAD); | |
| 988 | |
| 989 // last java frame on stack (which includes native call frames) | |
| 990 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 991 | |
| 992 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 993 } | |
| 994 | |
| 995 | |
| 996 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 997 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 998 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 999 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1000 vframeStream& vfst, | |
| 1001 Bytecodes::Code& bc, | |
| 1002 CallInfo& callinfo, TRAPS) { | |
| 1003 Handle receiver; | |
| 1004 Handle nullHandle; //create a handy null handle for exception returns | |
| 1005 | |
| 1006 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1007 | |
| 1008 // Find caller and bci from vframe | |
| 1009 methodHandle caller (THREAD, vfst.method()); | |
| 1010 int bci = vfst.bci(); | |
| 1011 | |
| 1012 // Find bytecode | |
| 2142 | 1013 Bytecode_invoke bytecode(caller, bci); |
| 1014 bc = bytecode.java_code(); | |
| 1015 int bytecode_index = bytecode.index(); | |
| 0 | 1016 |
| 1017 // Find receiver for non-static call | |
| 1018 if (bc != Bytecodes::_invokestatic) { | |
| 1019 // This register map must be update since we need to find the receiver for | |
| 1020 // compiled frames. The receiver might be in a register. | |
| 1021 RegisterMap reg_map2(thread); | |
| 1022 frame stubFrame = thread->last_frame(); | |
| 1023 // Caller-frame is a compiled frame | |
| 1024 frame callerFrame = stubFrame.sender(®_map2); | |
| 1025 | |
| 2142 | 1026 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1027 if (callee.is_null()) { |
| 1028 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1029 } | |
| 1030 // Retrieve from a compiled argument list | |
| 1031 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1032 | |
| 1033 if (receiver.is_null()) { | |
| 1034 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1035 } | |
| 1036 } | |
| 1037 | |
| 1038 // Resolve method. This is parameterized by bytecode. | |
| 1039 constantPoolHandle constants (THREAD, caller->constants()); | |
| 1040 assert (receiver.is_null() || receiver->is_oop(), "wrong receiver"); | |
| 1041 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); | |
| 1042 | |
| 1043 #ifdef ASSERT | |
| 1044 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1045 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
| 0 | 1046 assert(receiver.not_null(), "should have thrown exception"); |
| 1047 KlassHandle receiver_klass (THREAD, receiver->klass()); | |
| 1048 klassOop rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); | |
| 1049 // klass is already loaded | |
| 1050 KlassHandle static_receiver_klass (THREAD, rk); | |
| 1051 assert(receiver_klass->is_subtype_of(static_receiver_klass()), "actual receiver must be subclass of static receiver klass"); | |
| 1052 if (receiver_klass->oop_is_instance()) { | |
| 1053 if (instanceKlass::cast(receiver_klass())->is_not_initialized()) { | |
| 1054 tty->print_cr("ERROR: Klass not yet initialized!!"); | |
| 1055 receiver_klass.print(); | |
| 1056 } | |
| 1057 assert (!instanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); | |
| 1058 } | |
| 1059 } | |
| 1060 #endif | |
| 1061 | |
| 1062 return receiver; | |
| 1063 } | |
| 1064 | |
| 1065 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1066 ResourceMark rm(THREAD); | |
| 1067 // We need first to check if any Java activations (compiled, interpreted) | |
| 1068 // exist on the stack since last JavaCall. If not, we need | |
| 1069 // to get the target method from the JavaCall wrapper. | |
| 1070 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1071 methodHandle callee_method; | |
| 1072 if (vfst.at_end()) { | |
| 1073 // No Java frames were found on stack since we did the JavaCall. | |
| 1074 // Hence the stack can only contain an entry_frame. We need to | |
| 1075 // find the target method from the stub frame. | |
| 1076 RegisterMap reg_map(thread, false); | |
| 1077 frame fr = thread->last_frame(); | |
| 1078 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1079 fr = fr.sender(®_map); | |
| 1080 assert(fr.is_entry_frame(), "must be"); | |
| 1081 // fr is now pointing to the entry frame. | |
| 1082 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1083 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1084 } else { | |
| 1085 Bytecodes::Code bc; | |
| 1086 CallInfo callinfo; | |
| 1087 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1088 callee_method = callinfo.selected_method(); | |
| 1089 } | |
| 1090 assert(callee_method()->is_method(), "must be"); | |
| 1091 return callee_method; | |
| 1092 } | |
| 1093 | |
| 1094 // Resolves a call. | |
| 1095 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1096 bool is_virtual, | |
| 1097 bool is_optimized, TRAPS) { | |
| 1098 methodHandle callee_method; | |
| 1099 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1100 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1101 int retry_count = 0; | |
| 1102 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1103 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1104 // If has a pending exception then there is no need to re-try to |
| 1105 // resolve this method. | |
| 1106 // If the method has been redefined, we need to try again. | |
| 1107 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1108 // require that java.lang.Object has been updated. | |
| 1109 | |
| 1110 // It is very unlikely that method is redefined more than 100 times | |
| 1111 // in the middle of resolve. If it is looping here more than 100 times | |
| 1112 // means then there could be a bug here. | |
| 1113 guarantee((retry_count++ < 100), | |
| 1114 "Could not resolve to latest version of redefined method"); | |
| 1115 // method is redefined in the middle of resolve so re-try. | |
| 1116 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1117 } | |
| 1118 } | |
| 1119 return callee_method; | |
| 1120 } | |
| 1121 | |
| 1122 // Resolves a call. The compilers generate code for calls that go here | |
| 1123 // and are patched with the real destination of the call. | |
| 1124 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1125 bool is_virtual, | |
| 1126 bool is_optimized, TRAPS) { | |
| 1127 | |
| 1128 ResourceMark rm(thread); | |
| 1129 RegisterMap cbl_map(thread, false); | |
| 1130 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1131 | |
| 1295 | 1132 CodeBlob* caller_cb = caller_frame.cb(); |
| 1133 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1134 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 0 | 1135 // make sure caller is not getting deoptimized |
| 1136 // and removed before we are done with it. | |
| 1137 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1138 nmethodLocker caller_lock(caller_nm); |
| 0 | 1139 |
| 1140 | |
| 1141 // determine call info & receiver | |
| 1142 // note: a) receiver is NULL for static calls | |
| 1143 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1144 CallInfo call_info; | |
| 1145 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1146 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1147 call_info, CHECK_(methodHandle())); | |
| 1148 methodHandle callee_method = call_info.selected_method(); | |
| 1149 | |
| 1150 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic) || | |
| 1151 ( is_virtual && invoke_code != Bytecodes::_invokestatic), "inconsistent bytecode"); | |
| 1152 | |
| 1153 #ifndef PRODUCT | |
| 1154 // tracing/debugging/statistics | |
| 1155 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1156 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1157 (&_resolve_static_ctr); | |
| 1158 Atomic::inc(addr); | |
| 1159 | |
| 1160 if (TraceCallFixup) { | |
| 1161 ResourceMark rm(thread); | |
| 1162 tty->print("resolving %s%s (%s) call to", | |
| 1163 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1164 Bytecodes::name(invoke_code)); | |
| 1165 callee_method->print_short_name(tty); | |
| 1166 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1167 } | |
| 1168 #endif | |
| 1169 | |
| 1295 | 1170 // JSR 292 |
| 1171 // If the resolved method is a MethodHandle invoke target the call | |
| 1172 // site must be a MethodHandle call site. | |
| 1173 if (callee_method->is_method_handle_invoke()) { | |
| 1174 assert(caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); | |
| 1175 } | |
| 1176 | |
| 0 | 1177 // Compute entry points. This might require generation of C2I converter |
| 1178 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1179 // computation of the entry points is independent of patching the call. We | |
| 1180 // always return the entry-point, but we only patch the stub if the call has | |
| 1181 // not been deoptimized. Return values: For a virtual call this is an | |
| 1182 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1183 // virtual this is just a destination address. | |
| 1184 | |
| 1185 StaticCallInfo static_call_info; | |
| 1186 CompiledICInfo virtual_call_info; | |
| 1187 | |
| 1188 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1189 // we are done patching the code. | |
| 1295 | 1190 nmethod* callee_nm = callee_method->code(); |
| 1191 nmethodLocker nl_callee(callee_nm); | |
| 0 | 1192 #ifdef ASSERT |
| 1295 | 1193 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1194 #endif |
| 1195 | |
| 1196 if (is_virtual) { | |
| 1197 assert(receiver.not_null(), "sanity check"); | |
| 1198 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
| 1199 KlassHandle h_klass(THREAD, receiver->klass()); | |
| 1200 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
| 1201 is_optimized, static_bound, virtual_call_info, | |
| 1202 CHECK_(methodHandle())); | |
| 1203 } else { | |
| 1204 // static call | |
| 1205 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1206 } | |
| 1207 | |
| 1208 // grab lock, check for deoptimization and potentially patch caller | |
| 1209 { | |
| 1210 MutexLocker ml_patch(CompiledIC_lock); | |
| 1211 | |
| 1212 // Now that we are ready to patch if the methodOop was redefined then | |
| 1213 // don't update call site and let the caller retry. | |
| 1214 | |
| 1215 if (!callee_method->is_old()) { | |
| 1216 #ifdef ASSERT | |
| 1217 // We must not try to patch to jump to an already unloaded method. | |
| 1218 if (dest_entry_point != 0) { | |
| 1219 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
| 1220 "should not unload nmethod while locked"); | |
| 1221 } | |
| 1222 #endif | |
| 1223 if (is_virtual) { | |
| 1224 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1225 if (inline_cache->is_clean()) { | |
| 1226 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1227 } | |
| 1228 } else { | |
| 1229 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1230 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1231 } | |
| 1232 } | |
| 1233 | |
| 1234 } // unlock CompiledIC_lock | |
| 1235 | |
| 1236 return callee_method; | |
| 1237 } | |
| 1238 | |
| 1239 | |
| 1240 // Inline caches exist only in compiled code | |
| 1241 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1242 #ifdef ASSERT | |
| 1243 RegisterMap reg_map(thread, false); | |
| 1244 frame stub_frame = thread->last_frame(); | |
| 1245 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1246 frame caller_frame = stub_frame.sender(®_map); | |
| 1247 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
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1248 assert(!caller_frame.is_ricochet_frame(), "unexpected frame"); |
| 0 | 1249 #endif /* ASSERT */ |
| 1250 | |
| 1251 methodHandle callee_method; | |
| 1252 JRT_BLOCK | |
| 1253 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
| 1254 // Return methodOop through TLS | |
| 1255 thread->set_vm_result(callee_method()); | |
| 1256 JRT_BLOCK_END | |
| 1257 // return compiled code entry point after potential safepoints | |
| 1258 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1259 return callee_method->verified_code_entry(); | |
| 1260 JRT_END | |
| 1261 | |
| 1262 | |
| 1263 // Handle call site that has been made non-entrant | |
| 1264 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1265 // 6243940 We might end up in here if the callee is deoptimized | |
| 1266 // as we race to call it. We don't want to take a safepoint if | |
| 1267 // the caller was interpreted because the caller frame will look | |
| 1268 // interpreted to the stack walkers and arguments are now | |
| 1269 // "compiled" so it is much better to make this transition | |
| 1270 // invisible to the stack walking code. The i2c path will | |
| 1271 // place the callee method in the callee_target. It is stashed | |
| 1272 // there because if we try and find the callee by normal means a | |
| 1273 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1274 RegisterMap reg_map(thread, false); | |
| 1275 frame stub_frame = thread->last_frame(); | |
| 1276 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1277 frame caller_frame = stub_frame.sender(®_map); | |
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1278 |
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1279 // MethodHandle invokes don't have a CompiledIC and should always |
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1280 // simply redispatch to the callee_target. |
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1281 address sender_pc = caller_frame.pc(); |
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1282 CodeBlob* sender_cb = caller_frame.cb(); |
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1283 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
| 1204 | 1284 bool is_mh_invoke_via_adapter = false; // Direct c2c call or via adapter? |
| 1285 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) { | |
| 1286 // If the callee_target is set, then we have come here via an i2c | |
| 1287 // adapter. | |
| 1288 methodOop callee = thread->callee_target(); | |
| 1289 if (callee != NULL) { | |
| 1290 assert(callee->is_method(), "sanity"); | |
| 1291 is_mh_invoke_via_adapter = true; | |
| 1292 } | |
| 1293 } | |
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1294 |
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1295 if (caller_frame.is_interpreted_frame() || |
| 1204 | 1296 caller_frame.is_entry_frame() || |
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1297 caller_frame.is_ricochet_frame() || |
| 1204 | 1298 is_mh_invoke_via_adapter) { |
| 0 | 1299 methodOop callee = thread->callee_target(); |
| 1300 guarantee(callee != NULL && callee->is_method(), "bad handshake"); | |
| 1301 thread->set_vm_result(callee); | |
| 1302 thread->set_callee_target(NULL); | |
| 1303 return callee->get_c2i_entry(); | |
| 1304 } | |
| 1305 | |
| 1306 // Must be compiled to compiled path which is safe to stackwalk | |
| 1307 methodHandle callee_method; | |
| 1308 JRT_BLOCK | |
| 1309 // Force resolving of caller (if we called from compiled frame) | |
| 1310 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
| 1311 thread->set_vm_result(callee_method()); | |
| 1312 JRT_BLOCK_END | |
| 1313 // return compiled code entry point after potential safepoints | |
| 1314 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1315 return callee_method->verified_code_entry(); | |
| 1316 JRT_END | |
| 1317 | |
| 1318 | |
| 1319 // resolve a static call and patch code | |
| 1320 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1321 methodHandle callee_method; | |
| 1322 JRT_BLOCK | |
| 1323 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
| 1324 thread->set_vm_result(callee_method()); | |
| 1325 JRT_BLOCK_END | |
| 1326 // return compiled code entry point after potential safepoints | |
| 1327 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1328 return callee_method->verified_code_entry(); | |
| 1329 JRT_END | |
| 1330 | |
| 1331 | |
| 1332 // resolve virtual call and update inline cache to monomorphic | |
| 1333 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1334 methodHandle callee_method; | |
| 1335 JRT_BLOCK | |
| 1336 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
| 1337 thread->set_vm_result(callee_method()); | |
| 1338 JRT_BLOCK_END | |
| 1339 // return compiled code entry point after potential safepoints | |
| 1340 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1341 return callee_method->verified_code_entry(); | |
| 1342 JRT_END | |
| 1343 | |
| 1344 | |
| 1345 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1346 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1347 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1348 methodHandle callee_method; | |
| 1349 JRT_BLOCK | |
| 1350 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
| 1351 thread->set_vm_result(callee_method()); | |
| 1352 JRT_BLOCK_END | |
| 1353 // return compiled code entry point after potential safepoints | |
| 1354 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1355 return callee_method->verified_code_entry(); | |
| 1356 JRT_END | |
| 1357 | |
| 1358 | |
| 1359 | |
| 1360 | |
| 1361 | |
| 1362 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1363 ResourceMark rm(thread); | |
| 1364 CallInfo call_info; | |
| 1365 Bytecodes::Code bc; | |
| 1366 | |
| 1367 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1368 // receivers for non-static calls | |
| 1369 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1370 CHECK_(methodHandle())); | |
| 1371 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1372 // If we fell thru to below we would think that the site was going megamorphic | |
| 1373 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1374 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1375 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1376 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1377 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1378 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1379 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1380 // | |
| 1381 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1382 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1383 if (TraceCallFixup) { | |
| 1384 RegisterMap reg_map(thread, false); | |
| 1385 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1386 ResourceMark rm(thread); | |
| 1387 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1388 callee_method->print_short_name(tty); | |
| 1389 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1390 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1391 } | |
| 1392 return callee_method; | |
| 1393 } | |
| 1394 | |
| 1395 methodHandle callee_method = call_info.selected_method(); | |
| 1396 | |
| 1397 bool should_be_mono = false; | |
| 1398 | |
| 1399 #ifndef PRODUCT | |
| 1400 Atomic::inc(&_ic_miss_ctr); | |
| 1401 | |
| 1402 // Statistics & Tracing | |
| 1403 if (TraceCallFixup) { | |
| 1404 ResourceMark rm(thread); | |
| 1405 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1406 callee_method->print_short_name(tty); | |
| 1407 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1408 } | |
| 1409 | |
| 1410 if (ICMissHistogram) { | |
| 1411 MutexLocker m(VMStatistic_lock); | |
| 1412 RegisterMap reg_map(thread, false); | |
| 1413 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1414 // produce statistics under the lock | |
| 1415 trace_ic_miss(f.pc()); | |
| 1416 } | |
| 1417 #endif | |
| 1418 | |
| 1419 // install an event collector so that when a vtable stub is created the | |
| 1420 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1421 // event can't be posted when the stub is created as locks are held | |
| 1422 // - instead the event will be deferred until the event collector goes | |
| 1423 // out of scope. | |
| 1424 JvmtiDynamicCodeEventCollector event_collector; | |
| 1425 | |
| 1426 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1427 // made non-entrant or we are called from interpreted. | |
| 1428 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1429 RegisterMap reg_map(thread, false); | |
| 1430 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1431 CodeBlob* cb = caller_frame.cb(); | |
| 1432 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1433 // Not a non-entrant nmethod, so find inline_cache | |
| 1434 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1435 bool should_be_mono = false; | |
| 1436 if (inline_cache->is_optimized()) { | |
| 1437 if (TraceCallFixup) { | |
| 1438 ResourceMark rm(thread); | |
| 1439 tty->print("OPTIMIZED 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 should_be_mono = true; | |
| 1444 } else { | |
| 1445 compiledICHolderOop ic_oop = (compiledICHolderOop) inline_cache->cached_oop(); | |
| 1446 if ( ic_oop != NULL && ic_oop->is_compiledICHolder()) { | |
| 1447 | |
| 1448 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1449 // This isn't a real miss. We must have seen that compiled code | |
| 1450 // is now available and we want the call site converted to a | |
| 1451 // monomorphic compiled call site. | |
| 1452 // We can't assert for callee_method->code() != NULL because it | |
| 1453 // could have been deoptimized in the meantime | |
| 1454 if (TraceCallFixup) { | |
| 1455 ResourceMark rm(thread); | |
| 1456 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1457 callee_method->print_short_name(tty); | |
| 1458 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1459 } | |
| 1460 should_be_mono = true; | |
| 1461 } | |
| 1462 } | |
| 1463 } | |
| 1464 | |
| 1465 if (should_be_mono) { | |
| 1466 | |
| 1467 // We have a path that was monomorphic but was going interpreted | |
| 1468 // and now we have (or had) a compiled entry. We correct the IC | |
| 1469 // by using a new icBuffer. | |
| 1470 CompiledICInfo info; | |
| 1471 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1472 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1473 receiver_klass, | |
| 1474 inline_cache->is_optimized(), | |
| 1475 false, | |
| 1476 info, CHECK_(methodHandle())); | |
| 1477 inline_cache->set_to_monomorphic(info); | |
| 1478 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 1479 // Change to megamorphic | |
| 1480 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1481 } else { | |
| 1482 // Either clean or megamorphic | |
| 1483 } | |
| 1484 } | |
| 1485 } // Release CompiledIC_lock | |
| 1486 | |
| 1487 return callee_method; | |
| 1488 } | |
| 1489 | |
| 1490 // | |
| 1491 // Resets a call-site in compiled code so it will get resolved again. | |
| 1492 // This routines handles both virtual call sites, optimized virtual call | |
| 1493 // sites, and static call sites. Typically used to change a call sites | |
| 1494 // destination from compiled to interpreted. | |
| 1495 // | |
| 1496 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1497 ResourceMark rm(thread); | |
| 1498 RegisterMap reg_map(thread, false); | |
| 1499 frame stub_frame = thread->last_frame(); | |
| 1500 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1501 frame caller = stub_frame.sender(®_map); | |
| 1502 | |
| 1503 // Do nothing if the frame isn't a live compiled frame. | |
| 1504 // nmethod could be deoptimized by the time we get here | |
| 1505 // so no update to the caller is needed. | |
| 1506 | |
| 1507 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1508 | |
| 1509 address pc = caller.pc(); | |
| 1510 Events::log("update call-site at pc " INTPTR_FORMAT, pc); | |
| 1511 | |
| 1512 // Default call_addr is the location of the "basic" call. | |
| 1513 // Determine the address of the call we a reresolving. With | |
| 1514 // Inline Caches we will always find a recognizable call. | |
| 1515 // With Inline Caches disabled we may or may not find a | |
| 1516 // recognizable call. We will always find a call for static | |
| 1517 // calls and for optimized virtual calls. For vanilla virtual | |
| 1518 // calls it depends on the state of the UseInlineCaches switch. | |
| 1519 // | |
| 1520 // With Inline Caches disabled we can get here for a virtual call | |
| 1521 // for two reasons: | |
| 1522 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1523 // will run us thru handle_wrong_method and we will eventually | |
| 1524 // end up in the interpreter to throw the ame. | |
| 1525 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1526 // call and between the time we fetch the entry address and | |
| 1527 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1528 // we will wind up in the interprter (thru a c2i with c2). | |
| 1529 // | |
| 1530 address call_addr = NULL; | |
| 1531 { | |
| 1532 // Get call instruction under lock because another thread may be | |
| 1533 // busy patching it. | |
| 1534 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1535 // Location of call instruction | |
| 1536 if (NativeCall::is_call_before(pc)) { | |
| 1537 NativeCall *ncall = nativeCall_before(pc); | |
| 1538 call_addr = ncall->instruction_address(); | |
| 1539 } | |
| 1540 } | |
| 1541 | |
| 1542 // Check for static or virtual call | |
| 1543 bool is_static_call = false; | |
| 1544 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1545 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1546 // this is done with it. | |
| 1547 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1548 nmethodLocker nmlock(caller_nm); | |
| 1549 | |
| 1550 if (call_addr != NULL) { | |
| 1551 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1552 int ret = iter.next(); // Get item | |
| 1553 if (ret) { | |
| 1554 assert(iter.addr() == call_addr, "must find call"); | |
| 1555 if (iter.type() == relocInfo::static_call_type) { | |
| 1556 is_static_call = true; | |
| 1557 } else { | |
| 1558 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1559 iter.type() == relocInfo::opt_virtual_call_type | |
| 1560 , "unexpected relocInfo. type"); | |
| 1561 } | |
| 1562 } else { | |
| 1563 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1564 } | |
| 1565 | |
| 1566 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1567 // than directly setting it to the new destination, since resolving of calls | |
| 1568 // is always done through the same code path. (experience shows that it | |
| 1569 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1570 // to a wrong method). It should not be performance critical, since the | |
| 1571 // resolve is only done once. | |
| 1572 | |
| 1573 MutexLocker ml(CompiledIC_lock); | |
| 1574 // | |
| 1575 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1576 // as it is a waste of time | |
| 1577 // | |
| 1578 if (caller_nm->is_in_use()) { | |
| 1579 if (is_static_call) { | |
| 1580 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1581 ssc->set_to_clean(); | |
| 1582 } else { | |
| 1583 // compiled, dispatched call (which used to call an interpreted method) | |
| 1584 CompiledIC* inline_cache = CompiledIC_at(call_addr); | |
| 1585 inline_cache->set_to_clean(); | |
| 1586 } | |
| 1587 } | |
| 1588 } | |
| 1589 | |
| 1590 } | |
| 1591 | |
| 1592 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1593 | |
| 1594 | |
| 1595 #ifndef PRODUCT | |
| 1596 Atomic::inc(&_wrong_method_ctr); | |
| 1597 | |
| 1598 if (TraceCallFixup) { | |
| 1599 ResourceMark rm(thread); | |
| 1600 tty->print("handle_wrong_method reresolving call to"); | |
| 1601 callee_method->print_short_name(tty); | |
| 1602 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1603 } | |
| 1604 #endif | |
| 1605 | |
| 1606 return callee_method; | |
| 1607 } | |
| 1608 | |
| 1609 // --------------------------------------------------------------------------- | |
| 1610 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1611 // we were called by a compiled method. However we could have lost a race | |
| 1612 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1613 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1614 // so he no longer calls into the interpreter. |
| 1615 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(methodOopDesc* method, address caller_pc)) | |
| 1616 methodOop moop(method); | |
| 1617 | |
| 1618 address entry_point = moop->from_compiled_entry(); | |
| 1619 | |
| 1620 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1621 // been resolved yet, in which case this function will be called from | |
| 1622 // an nmethod that has been patched for deopt and we can ignore the | |
| 1623 // request for a fixup. | |
| 1624 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1625 // is now back to the i2c in that case we don't need to patch and if | |
| 1626 // we did we'd leap into space because the callsite needs to use | |
| 1627 // "to interpreter" stub in order to load up the methodOop. Don't | |
| 1628 // ask me how I know this... | |
| 1629 | |
| 1630 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1631 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1632 return; | |
| 1633 } | |
| 1634 | |
| 1635 // The check above makes sure this is a nmethod. | |
| 1636 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1637 assert(nm, "must be"); | |
| 1638 | |
| 1639 // Don't fixup MethodHandle call sites as c2i/i2c adapters are used | |
| 1640 // to implement MethodHandle actions. | |
| 1641 if (nm->is_method_handle_return(caller_pc)) { | |
| 0 | 1642 return; |
| 1643 } | |
| 1644 | |
| 1645 // There is a benign race here. We could be attempting to patch to a compiled | |
| 1646 // entry point at the same time the callee is being deoptimized. If that is | |
| 1647 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1648 // call site with the same old data. clear_code will set code() to NULL | |
| 1649 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1650 // to patch. If we hit the window where the callee has a c2i in the | |
| 1651 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1652 // and patch the code with the same old data. Asi es la vida. | |
| 1653 | |
| 1654 if (moop->code() == NULL) return; | |
| 1655 | |
| 1205 | 1656 if (nm->is_in_use()) { |
| 0 | 1657 |
| 1658 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1659 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1660 if (NativeCall::is_call_before(caller_pc + frame::pc_return_offset)) { | |
| 1661 NativeCall *call = nativeCall_before(caller_pc + frame::pc_return_offset); | |
| 1662 // | |
| 1663 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1664 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1665 // see compiled code and attempt to patch the site by calling us. This would | |
| 1666 // then incorrectly convert the call site to optimized and its downhill from | |
| 1667 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1668 // just made a call site that could be megamorphic into a monomorphic site | |
| 1669 // for the rest of its life! Just another racing bug in the life of | |
| 1670 // fixup_callers_callsite ... | |
| 1671 // | |
|
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1672 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1673 iter.next(); |
| 1674 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1675 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1676 if ( typ != relocInfo::static_call_type && | |
| 1677 typ != relocInfo::opt_virtual_call_type && | |
| 1678 typ != relocInfo::static_stub_type) { | |
| 1679 return; | |
| 1680 } | |
| 1681 address destination = call->destination(); | |
| 1682 if (destination != entry_point) { | |
| 1683 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1684 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1685 if (callee == cb || callee->is_adapter_blob()) { | |
| 1686 // static call or optimized virtual | |
| 1687 if (TraceCallFixup) { | |
| 1204 | 1688 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1689 moop->print_short_name(tty); |
| 1690 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1691 } | |
| 1692 call->set_destination_mt_safe(entry_point); | |
| 1693 } else { | |
| 1694 if (TraceCallFixup) { | |
| 1695 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1696 moop->print_short_name(tty); | |
| 1697 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1698 } | |
| 1699 // assert is too strong could also be resolve destinations. | |
| 1700 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1701 } | |
| 1702 } else { | |
| 1703 if (TraceCallFixup) { | |
| 1204 | 1704 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1705 moop->print_short_name(tty); |
| 1706 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1707 } | |
| 1708 } | |
| 1709 } | |
| 1710 } | |
| 1711 | |
| 1712 IRT_END | |
| 1713 | |
| 1714 | |
| 1715 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1716 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1717 oopDesc* dest, jint dest_pos, | |
| 1718 jint length, | |
| 1719 JavaThread* thread)) { | |
| 1720 #ifndef PRODUCT | |
| 1721 _slow_array_copy_ctr++; | |
| 1722 #endif | |
| 1723 // Check if we have null pointers | |
| 1724 if (src == NULL || dest == NULL) { | |
| 1725 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1726 } | |
| 1727 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1728 // even though the copy_array API also performs dynamic checks to ensure | |
| 1729 // that src and dest are truly arrays (and are conformable). | |
| 1730 // The copy_array mechanism is awkward and could be removed, but | |
| 1731 // the compilers don't call this function except as a last resort, | |
| 1732 // so it probably doesn't matter. | |
| 1733 Klass::cast(src->klass())->copy_array((arrayOopDesc*)src, src_pos, | |
| 1734 (arrayOopDesc*)dest, dest_pos, | |
| 1735 length, thread); | |
| 1736 } | |
| 1737 JRT_END | |
| 1738 | |
| 1739 char* SharedRuntime::generate_class_cast_message( | |
| 1740 JavaThread* thread, const char* objName) { | |
| 1741 | |
| 1742 // Get target class name from the checkcast instruction | |
| 1743 vframeStream vfst(thread, true); | |
| 1744 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1745 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 0 | 1746 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at( |
| 2142 | 1747 cc.index(), thread)); |
| 0 | 1748 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1749 } | |
| 1750 | |
| 710 | 1751 char* SharedRuntime::generate_wrong_method_type_message(JavaThread* thread, |
| 1752 oopDesc* required, | |
| 1753 oopDesc* actual) { | |
|
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1754 if (TraceMethodHandles) { |
|
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changeset
|
1755 tty->print_cr("WrongMethodType thread="PTR_FORMAT" req="PTR_FORMAT" act="PTR_FORMAT"", |
|
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1756 thread, required, actual); |
|
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1757 } |
|
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1758 assert(EnableInvokeDynamic, ""); |
| 710 | 1759 oop singleKlass = wrong_method_type_is_for_single_argument(thread, required); |
|
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|
1760 char* message = NULL; |
| 710 | 1761 if (singleKlass != NULL) { |
| 1762 const char* objName = "argument or return value"; | |
| 1763 if (actual != NULL) { | |
| 1764 // be flexible about the junk passed in: | |
| 1765 klassOop ak = (actual->is_klass() | |
| 1766 ? (klassOop)actual | |
| 1767 : actual->klass()); | |
| 1768 objName = Klass::cast(ak)->external_name(); | |
| 1769 } | |
| 1770 Klass* targetKlass = Klass::cast(required->is_klass() | |
| 1771 ? (klassOop)required | |
| 1772 : java_lang_Class::as_klassOop(required)); | |
|
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1773 message = generate_class_cast_message(objName, targetKlass->external_name()); |
| 710 | 1774 } else { |
| 1775 // %%% need to get the MethodType string, without messing around too much | |
|
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|
1776 const char* desc = NULL; |
| 710 | 1777 // Get a signature from the invoke instruction |
| 1778 const char* mhName = "method handle"; | |
| 1779 const char* targetType = "the required signature"; | |
|
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1780 int targetArity = -1, mhArity = -1; |
| 710 | 1781 vframeStream vfst(thread, true); |
| 1782 if (!vfst.at_end()) { | |
| 2142 | 1783 Bytecode_invoke call(vfst.method(), vfst.bci()); |
| 710 | 1784 methodHandle target; |
| 1785 { | |
| 1786 EXCEPTION_MARK; | |
| 2142 | 1787 target = call.static_target(THREAD); |
| 710 | 1788 if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; } |
| 1789 } | |
| 1790 if (target.not_null() | |
| 1791 && target->is_method_handle_invoke() | |
| 1792 && required == target->method_handle_type()) { | |
| 1793 targetType = target->signature()->as_C_string(); | |
|
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|
1794 targetArity = ArgumentCount(target->signature()).size(); |
| 710 | 1795 } |
| 1796 } | |
|
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|
1797 KlassHandle kignore; int dmf_flags = 0; |
|
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1798 methodHandle actual_method = MethodHandles::decode_method(actual, kignore, dmf_flags); |
|
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1799 if ((dmf_flags & ~(MethodHandles::_dmf_has_receiver | |
|
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1800 MethodHandles::_dmf_does_dispatch | |
|
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1801 MethodHandles::_dmf_from_interface)) != 0) |
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1802 actual_method = methodHandle(); // MH does extra binds, drops, etc. |
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1803 bool has_receiver = ((dmf_flags & MethodHandles::_dmf_has_receiver) != 0); |
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1804 if (actual_method.not_null()) { |
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1805 mhName = actual_method->signature()->as_C_string(); |
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1806 mhArity = ArgumentCount(actual_method->signature()).size(); |
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1807 if (!actual_method->is_static()) mhArity += 1; |
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1808 } else if (java_lang_invoke_MethodHandle::is_instance(actual)) { |
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1809 oopDesc* mhType = java_lang_invoke_MethodHandle::type(actual); |
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1810 mhArity = java_lang_invoke_MethodType::ptype_count(mhType); |
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1811 stringStream st; |
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1812 java_lang_invoke_MethodType::print_signature(mhType, &st); |
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1813 mhName = st.as_string(); |
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1814 } |
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1815 if (targetArity != -1 && targetArity != mhArity) { |
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1816 if (has_receiver && targetArity == mhArity-1) |
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1817 desc = " cannot be called without a receiver argument as "; |
| 710 | 1818 else |
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1819 desc = " cannot be called with a different arity as "; |
| 710 | 1820 } |
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1821 message = generate_class_cast_message(mhName, targetType, |
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1822 desc != NULL ? desc : |
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1823 " cannot be called as "); |
| 710 | 1824 } |
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1825 if (TraceMethodHandles) { |
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1826 tty->print_cr("WrongMethodType => message=%s", message); |
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1827 } |
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1828 return message; |
| 710 | 1829 } |
| 1830 | |
| 1831 oop SharedRuntime::wrong_method_type_is_for_single_argument(JavaThread* thr, | |
| 1832 oopDesc* required) { | |
| 1833 if (required == NULL) return NULL; | |
| 1142 | 1834 if (required->klass() == SystemDictionary::Class_klass()) |
| 710 | 1835 return required; |
| 1836 if (required->is_klass()) | |
| 1837 return Klass::cast(klassOop(required))->java_mirror(); | |
| 1838 return NULL; | |
| 1839 } | |
| 1840 | |
| 1841 | |
| 0 | 1842 char* SharedRuntime::generate_class_cast_message( |
| 710 | 1843 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1844 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1845 | |
| 53 | 1846 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1847 if (NULL == message) { |
| 53 | 1848 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1849 message = const_cast<char*>(objName); |
| 1850 } else { | |
| 1851 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1852 } | |
| 1853 return message; | |
| 1854 } | |
| 1855 | |
| 1856 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1857 (void) JavaThread::current()->reguard_stack(); | |
| 1858 JRT_END | |
| 1859 | |
| 1860 | |
| 1861 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1862 #ifndef PRODUCT | |
| 1863 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1864 #endif | |
| 1865 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1866 oop obj(_obj); | |
| 1867 #ifndef PRODUCT | |
| 1868 _monitor_enter_ctr++; // monitor enter slow | |
| 1869 #endif | |
| 1870 if (PrintBiasedLockingStatistics) { | |
| 1871 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1872 } | |
| 1873 Handle h_obj(THREAD, obj); | |
| 1874 if (UseBiasedLocking) { | |
| 1875 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1876 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1877 } else { | |
| 1878 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1879 } | |
| 1880 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1881 JRT_END | |
| 1882 | |
| 1883 #ifndef PRODUCT | |
| 1884 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1885 #endif | |
| 1886 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1887 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1888 oop obj(_obj); | |
| 1889 #ifndef PRODUCT | |
| 1890 _monitor_exit_ctr++; // monitor exit slow | |
| 1891 #endif | |
| 1892 Thread* THREAD = JavaThread::current(); | |
| 1893 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1894 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1895 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1896 #undef MIGHT_HAVE_PENDING | |
| 1897 #ifdef MIGHT_HAVE_PENDING | |
| 1898 // Save and restore any pending_exception around the exception mark. | |
| 1899 // While the slow_exit must not throw an exception, we could come into | |
| 1900 // this routine with one set. | |
| 1901 oop pending_excep = NULL; | |
| 1902 const char* pending_file; | |
| 1903 int pending_line; | |
| 1904 if (HAS_PENDING_EXCEPTION) { | |
| 1905 pending_excep = PENDING_EXCEPTION; | |
| 1906 pending_file = THREAD->exception_file(); | |
| 1907 pending_line = THREAD->exception_line(); | |
| 1908 CLEAR_PENDING_EXCEPTION; | |
| 1909 } | |
| 1910 #endif /* MIGHT_HAVE_PENDING */ | |
| 1911 | |
| 1912 { | |
| 1913 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1914 EXCEPTION_MARK; | |
| 1915 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1916 } | |
| 1917 | |
| 1918 #ifdef MIGHT_HAVE_PENDING | |
| 1919 if (pending_excep != NULL) { | |
| 1920 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1921 } | |
| 1922 #endif /* MIGHT_HAVE_PENDING */ | |
| 1923 JRT_END | |
| 1924 | |
| 1925 #ifndef PRODUCT | |
| 1926 | |
| 1927 void SharedRuntime::print_statistics() { | |
| 1928 ttyLocker ttyl; | |
| 1929 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1930 | |
| 1931 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1932 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1933 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1934 | |
| 1935 SharedRuntime::print_ic_miss_histogram(); | |
| 1936 | |
| 1937 if (CountRemovableExceptions) { | |
| 1938 if (_nof_removable_exceptions > 0) { | |
| 1939 Unimplemented(); // this counter is not yet incremented | |
| 1940 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1941 } | |
| 1942 } | |
| 1943 | |
| 1944 // Dump the JRT_ENTRY counters | |
| 1945 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 1946 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 1947 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 1948 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 1949 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 1950 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 1951 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 1952 | |
| 1953 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 1954 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 1955 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 1956 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 1957 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 1958 | |
| 1959 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 1960 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 1961 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 1962 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 1963 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 1964 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 1965 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 1966 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 1967 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 1968 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 1969 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 1970 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 1971 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 1972 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 1973 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 1974 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 1975 | |
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1976 AdapterHandlerLibrary::print_statistics(); |
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1977 |
| 0 | 1978 if (xtty != NULL) xtty->tail("statistics"); |
| 1979 } | |
| 1980 | |
| 1981 inline double percent(int x, int y) { | |
| 1982 return 100.0 * x / MAX2(y, 1); | |
| 1983 } | |
| 1984 | |
| 1985 class MethodArityHistogram { | |
| 1986 public: | |
| 1987 enum { MAX_ARITY = 256 }; | |
| 1988 private: | |
| 1989 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 1990 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 1991 static int _max_arity; // max. arity seen | |
| 1992 static int _max_size; // max. arg size seen | |
| 1993 | |
| 1994 static void add_method_to_histogram(nmethod* nm) { | |
| 1995 methodOop m = nm->method(); | |
| 1996 ArgumentCount args(m->signature()); | |
| 1997 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 1998 int argsize = m->size_of_parameters(); | |
| 1999 arity = MIN2(arity, MAX_ARITY-1); | |
| 2000 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 2001 int count = nm->method()->compiled_invocation_count(); | |
| 2002 _arity_histogram[arity] += count; | |
| 2003 _size_histogram[argsize] += count; | |
| 2004 _max_arity = MAX2(_max_arity, arity); | |
| 2005 _max_size = MAX2(_max_size, argsize); | |
| 2006 } | |
| 2007 | |
| 2008 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 2009 const int N = MIN2(5, n); | |
| 2010 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2011 double sum = 0; | |
| 2012 double weighted_sum = 0; | |
| 2013 int i; | |
| 2014 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 2015 double rest = sum; | |
| 2016 double percent = sum / 100; | |
| 2017 for (i = 0; i <= N; i++) { | |
| 2018 rest -= histo[i]; | |
| 2019 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 2020 } | |
| 2021 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 2022 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 2023 } | |
| 2024 | |
| 2025 void print_histogram() { | |
| 2026 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2027 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 2028 tty->print_cr("\nSame for parameter size (in words):"); | |
| 2029 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 2030 tty->cr(); | |
| 2031 } | |
| 2032 | |
| 2033 public: | |
| 2034 MethodArityHistogram() { | |
| 2035 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 2036 _max_arity = _max_size = 0; | |
| 2037 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 2038 CodeCache::nmethods_do(add_method_to_histogram); | |
| 2039 print_histogram(); | |
| 2040 } | |
| 2041 }; | |
| 2042 | |
| 2043 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2044 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2045 int MethodArityHistogram::_max_arity; | |
| 2046 int MethodArityHistogram::_max_size; | |
| 2047 | |
| 2048 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2049 tty->print_cr("Calls from compiled code:"); | |
| 2050 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2051 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2052 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2053 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2054 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2055 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2056 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2057 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2058 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2059 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2060 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2061 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2062 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2063 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2064 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2065 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2066 tty->cr(); | |
| 2067 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2068 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2069 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2070 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2071 tty->cr(); | |
| 2072 | |
| 2073 MethodArityHistogram h; | |
| 2074 } | |
| 2075 #endif | |
| 2076 | |
| 2077 | |
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2078 // A simple wrapper class around the calling convention information |
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2079 // that allows sharing of adapters for the same calling convention. |
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2080 class AdapterFingerPrint : public CHeapObj { |
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2081 private: |
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2082 union { |
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2083 int _compact[3]; |
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2084 int* _fingerprint; |
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2085 } _value; |
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2086 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2087 // Otherwise _value._fingerprint is the array. |
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2088 |
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2089 // Remap BasicTypes that are handled equivalently by the adapters. |
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2090 // These are correct for the current system but someday it might be |
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2091 // necessary to make this mapping platform dependent. |
|
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|
2092 static BasicType adapter_encoding(BasicType in) { |
|
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|
2093 assert((~0xf & in) == 0, "must fit in 4 bits"); |
|
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|
2094 switch(in) { |
|
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|
2095 case T_BOOLEAN: |
|
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|
2096 case T_BYTE: |
|
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|
2097 case T_SHORT: |
|
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|
2098 case T_CHAR: |
|
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|
2099 // There are all promoted to T_INT in the calling convention |
|
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|
2100 return T_INT; |
|
1187
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|
2101 |
|
1207
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|
2102 case T_OBJECT: |
|
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|
2103 case T_ARRAY: |
|
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|
2104 #ifdef _LP64 |
| 1506 | 2105 return T_LONG; |
|
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|
2106 #else |
| 1506 | 2107 return T_INT; |
|
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|
2108 #endif |
|
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|
2109 |
|
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|
2110 case T_INT: |
|
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|
2111 case T_LONG: |
|
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|
2112 case T_FLOAT: |
|
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|
2113 case T_DOUBLE: |
|
74c848d437ab
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|
2114 case T_VOID: |
|
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|
2115 return in; |
|
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changeset
|
2116 |
|
74c848d437ab
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|
2117 default: |
|
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|
2118 ShouldNotReachHere(); |
|
74c848d437ab
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|
2119 return T_CONFLICT; |
|
1187
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|
2120 } |
|
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|
2121 } |
|
cf0685d550f1
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|
2122 |
|
1207
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|
2123 public: |
|
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|
2124 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
|
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|
2125 // The fingerprint is based on the BasicType signature encoded |
|
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|
2126 // into an array of ints with four entries per int. |
|
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|
2127 int* ptr; |
|
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|
2128 int len = (total_args_passed + 3) >> 2; |
|
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|
2129 if (len <= (int)(sizeof(_value._compact) / sizeof(int))) { |
|
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|
2130 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
|
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|
2131 // Storing the signature encoded as signed chars hits about 98% |
|
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|
2132 // of the time. |
|
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|
2133 _length = -len; |
|
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|
2134 ptr = _value._compact; |
|
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|
2135 } else { |
|
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|
2136 _length = len; |
|
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|
2137 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length); |
|
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|
2138 ptr = _value._fingerprint; |
|
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|
2139 } |
|
74c848d437ab
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parents:
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changeset
|
2140 |
|
74c848d437ab
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|
2141 // Now pack the BasicTypes with 4 per int |
|
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|
2142 int sig_index = 0; |
|
74c848d437ab
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|
2143 for (int index = 0; index < len; index++) { |
|
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|
2144 int value = 0; |
|
74c848d437ab
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|
2145 for (int byte = 0; byte < 4; byte++) { |
|
74c848d437ab
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|
2146 if (sig_index < total_args_passed) { |
|
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|
2147 value = (value << 4) | adapter_encoding(sig_bt[sig_index++]); |
|
74c848d437ab
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|
2148 } |
|
74c848d437ab
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parents:
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|
2149 } |
|
74c848d437ab
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parents:
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changeset
|
2150 ptr[index] = value; |
|
74c848d437ab
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parents:
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diff
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|
2151 } |
|
1187
cf0685d550f1
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diff
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|
2152 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2153 |
|
cf0685d550f1
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parents:
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diff
changeset
|
2154 ~AdapterFingerPrint() { |
|
cf0685d550f1
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parents:
1142
diff
changeset
|
2155 if (_length > 0) { |
|
cf0685d550f1
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parents:
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changeset
|
2156 FREE_C_HEAP_ARRAY(int, _value._fingerprint); |
|
cf0685d550f1
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parents:
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diff
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|
2157 } |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2158 } |
|
cf0685d550f1
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parents:
1142
diff
changeset
|
2159 |
|
1207
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|
2160 int value(int index) { |
|
1187
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parents:
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diff
changeset
|
2161 if (_length < 0) { |
|
cf0685d550f1
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parents:
1142
diff
changeset
|
2162 return _value._compact[index]; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2163 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2164 return _value._fingerprint[index]; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2165 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2166 int length() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2167 if (_length < 0) return -_length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2168 return _length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2169 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2170 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2171 bool is_compact() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2172 return _length <= 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2173 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2174 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2175 unsigned int compute_hash() { |
|
1207
74c848d437ab
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parents:
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changeset
|
2176 int hash = 0; |
|
1187
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2177 for (int i = 0; i < length(); i++) { |
|
1207
74c848d437ab
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diff
changeset
|
2178 int v = value(i); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2179 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2180 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2181 return (unsigned int)hash; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2182 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2183 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2184 const char* as_string() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2185 stringStream st; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2186 for (int i = 0; i < length(); i++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2187 st.print(PTR_FORMAT, value(i)); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2188 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2189 return st.as_string(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2190 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2191 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2192 bool equals(AdapterFingerPrint* other) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2193 if (other->_length != _length) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2194 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2195 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2196 if (_length < 0) { |
|
1207
74c848d437ab
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|
2197 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
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parents:
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diff
changeset
|
2198 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
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parents:
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diff
changeset
|
2199 _value._compact[2] == other->_value._compact[2]; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2200 } else { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2201 for (int i = 0; i < _length; i++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2202 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2203 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2204 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2205 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2206 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2207 return true; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2208 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2209 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2210 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2211 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2212 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2213 class AdapterHandlerTable : public BasicHashtable { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2214 friend class AdapterHandlerTableIterator; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2215 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2216 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2217 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2218 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2219 static int _lookups; // number of calls to lookup |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2220 static int _buckets; // number of buckets checked |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2221 static int _equals; // number of buckets checked with matching hash |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2222 static int _hits; // number of successful lookups |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2223 static int _compact; // number of equals calls with compact signature |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2224 #endif |
|
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|
2225 |
|
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|
2226 AdapterHandlerEntry* bucket(int i) { |
|
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|
2227 return (AdapterHandlerEntry*)BasicHashtable::bucket(i); |
|
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|
2228 } |
|
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|
2229 |
|
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|
2230 public: |
|
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|
2231 AdapterHandlerTable() |
|
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|
2232 : BasicHashtable(293, sizeof(AdapterHandlerEntry)) { } |
|
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|
2233 |
|
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|
2234 // Create a new entry suitable for insertion in the table |
|
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|
2235 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
|
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|
2236 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable::new_entry(fingerprint->compute_hash()); |
|
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|
2237 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2238 return entry; |
|
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|
2239 } |
|
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|
2240 |
|
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|
2241 // Insert an entry into the table |
|
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|
2242 void add(AdapterHandlerEntry* entry) { |
|
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|
2243 int index = hash_to_index(entry->hash()); |
|
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|
2244 add_entry(index, entry); |
|
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|
2245 } |
|
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|
2246 |
|
1207
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|
2247 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
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diff
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|
2248 entry->deallocate(); |
|
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|
2249 BasicHashtable::free_entry(entry); |
|
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|
2250 } |
|
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diff
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|
2251 |
|
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|
2252 // Find a entry with the same fingerprint if it exists |
|
1207
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|
2253 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
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|
2254 NOT_PRODUCT(_lookups++); |
|
1207
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|
2255 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
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|
2256 unsigned int hash = fp.compute_hash(); |
|
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|
2257 int index = hash_to_index(hash); |
|
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|
2258 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
e7b1cc79bd25
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|
2259 NOT_PRODUCT(_buckets++); |
|
1187
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|
2260 if (e->hash() == hash) { |
|
1263
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|
2261 NOT_PRODUCT(_equals++); |
|
1187
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|
2262 if (fp.equals(e->fingerprint())) { |
|
1263
e7b1cc79bd25
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|
2263 #ifndef PRODUCT |
|
1187
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|
2264 if (fp.is_compact()) _compact++; |
|
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|
2265 _hits++; |
|
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|
2266 #endif |
|
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|
2267 return e; |
|
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diff
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|
2268 } |
|
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diff
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|
2269 } |
|
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diff
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|
2270 } |
|
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|
2271 return NULL; |
|
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never
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|
2272 } |
|
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diff
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|
2273 |
|
1263
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changeset
|
2274 #ifndef PRODUCT |
|
1187
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|
2275 void print_statistics() { |
|
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diff
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|
2276 ResourceMark rm; |
|
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|
2277 int longest = 0; |
|
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|
2278 int empty = 0; |
|
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|
2279 int total = 0; |
|
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|
2280 int nonempty = 0; |
|
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changeset
|
2281 for (int index = 0; index < table_size(); index++) { |
|
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diff
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|
2282 int count = 0; |
|
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changeset
|
2283 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
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|
2284 count++; |
|
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|
2285 } |
|
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changeset
|
2286 if (count != 0) nonempty++; |
|
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changeset
|
2287 if (count == 0) empty++; |
|
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|
2288 if (count > longest) longest = count; |
|
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diff
changeset
|
2289 total += count; |
|
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|
2290 } |
|
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changeset
|
2291 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2292 empty, longest, total, total / (double)nonempty); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2293 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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changeset
|
2294 _lookups, _buckets, _equals, _hits, _compact); |
|
1263
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|
2295 } |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2296 #endif |
|
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|
2297 }; |
|
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diff
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|
2298 |
|
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diff
changeset
|
2299 |
|
1263
e7b1cc79bd25
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changeset
|
2300 #ifndef PRODUCT |
|
1187
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|
2301 |
|
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|
2302 int AdapterHandlerTable::_lookups; |
|
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|
2303 int AdapterHandlerTable::_buckets; |
|
cf0685d550f1
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|
2304 int AdapterHandlerTable::_equals; |
|
cf0685d550f1
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|
2305 int AdapterHandlerTable::_hits; |
|
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|
2306 int AdapterHandlerTable::_compact; |
|
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never
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|
2307 |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2308 #endif |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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parents:
1644
diff
changeset
|
2309 |
|
1187
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changeset
|
2310 class AdapterHandlerTableIterator : public StackObj { |
|
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never
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|
2311 private: |
|
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|
2312 AdapterHandlerTable* _table; |
|
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diff
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|
2313 int _index; |
|
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|
2314 AdapterHandlerEntry* _current; |
|
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|
2315 |
|
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diff
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|
2316 void scan() { |
|
cf0685d550f1
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diff
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|
2317 while (_index < _table->table_size()) { |
|
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changeset
|
2318 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2319 _index++; |
|
1187
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|
2320 if (a != NULL) { |
|
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diff
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|
2321 _current = a; |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2322 return; |
|
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|
2323 } |
|
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|
2324 } |
|
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|
2325 } |
|
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|
2326 |
|
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never
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|
2327 public: |
|
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never
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|
2328 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
cf0685d550f1
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|
2329 scan(); |
|
cf0685d550f1
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|
2330 } |
|
cf0685d550f1
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|
2331 bool has_next() { |
|
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|
2332 return _current != NULL; |
|
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|
2333 } |
|
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|
2334 AdapterHandlerEntry* next() { |
|
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diff
changeset
|
2335 if (_current != NULL) { |
|
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diff
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|
2336 AdapterHandlerEntry* result = _current; |
|
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never
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diff
changeset
|
2337 _current = _current->next(); |
|
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never
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diff
changeset
|
2338 if (_current == NULL) scan(); |
|
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never
parents:
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diff
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|
2339 return result; |
|
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never
parents:
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diff
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|
2340 } else { |
|
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never
parents:
1142
diff
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|
2341 return NULL; |
|
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never
parents:
1142
diff
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|
2342 } |
|
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never
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diff
changeset
|
2343 } |
|
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never
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diff
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|
2344 }; |
|
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never
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diff
changeset
|
2345 |
|
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never
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diff
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|
2346 |
| 0 | 2347 // --------------------------------------------------------------------------- |
| 2348 // Implementation of AdapterHandlerLibrary | |
|
1187
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|
2349 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
cf0685d550f1
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diff
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|
2350 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2351 const int AdapterHandlerLibrary_size = 16*K; |
|
742
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|
2352 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
45463a04ca27
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|
2353 |
|
45463a04ca27
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kvn
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diff
changeset
|
2354 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
45463a04ca27
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2355 // Should be called only when AdapterHandlerLibrary_lock is active. |
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2356 if (_buffer == NULL) // Initialize lazily |
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2357 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2358 return _buffer; |
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2359 } |
| 0 | 2360 |
| 2361 void AdapterHandlerLibrary::initialize() { | |
|
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2362 if (_adapters != NULL) return; |
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2363 _adapters = new AdapterHandlerTable(); |
| 0 | 2364 |
| 2365 // Create a special handler for abstract methods. Abstract methods | |
| 2366 // are never compiled so an i2c entry is somewhat meaningless, but | |
| 2367 // fill it in with something appropriate just in case. Pass handle | |
| 2368 // wrong method for the c2i transitions. | |
| 2369 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
|
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2370 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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2371 StubRoutines::throw_AbstractMethodError_entry(), |
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2372 wrong_method, wrong_method); |
| 0 | 2373 } |
| 2374 | |
|
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2375 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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2376 address i2c_entry, |
|
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2377 address c2i_entry, |
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2378 address c2i_unverified_entry) { |
|
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2379 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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2380 } |
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2381 |
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2382 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2383 // Use customized signature handler. Need to lock around updates to |
|
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2384 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2385 // and a single writer: this could be fixed if it becomes a |
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2386 // problem). |
| 0 | 2387 |
| 2388 // Get the address of the ic_miss handlers before we grab the | |
| 2389 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2390 // was caused by the initialization of the stubs happening | |
| 2391 // while we held the lock and then notifying jvmti while | |
| 2392 // holding it. This just forces the initialization to be a little | |
| 2393 // earlier. | |
| 2394 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2395 assert(ic_miss != NULL, "must have handler"); | |
| 2396 | |
|
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2397 ResourceMark rm; |
|
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2398 |
| 1748 | 2399 NOT_PRODUCT(int insts_size); |
|
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2400 AdapterBlob* B = NULL; |
|
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2401 AdapterHandlerEntry* entry = NULL; |
|
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2402 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2403 { |
| 2404 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2405 // make sure data structure is initialized | |
| 2406 initialize(); | |
| 2407 | |
| 2408 if (method->is_abstract()) { | |
|
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2409 return _abstract_method_handler; |
| 0 | 2410 } |
| 2411 | |
|
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2412 // Fill in the signature array, for the calling-convention call. |
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2413 int total_args_passed = method->size_of_parameters(); // All args on stack |
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2414 |
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2415 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2416 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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2417 int i = 0; |
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2418 if (!method->is_static()) // Pass in receiver first |
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2419 sig_bt[i++] = T_OBJECT; |
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2420 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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2421 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2422 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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2423 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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2424 } |
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2425 assert(i == total_args_passed, ""); |
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2426 |
|
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2427 // Lookup method signature's fingerprint |
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2428 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
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2429 |
|
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2430 #ifdef ASSERT |
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2431 AdapterHandlerEntry* shared_entry = NULL; |
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2432 if (VerifyAdapterSharing && entry != NULL) { |
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2433 shared_entry = entry; |
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2434 entry = NULL; |
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2435 } |
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2436 #endif |
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2437 |
|
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2438 if (entry != NULL) { |
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2439 return entry; |
| 0 | 2440 } |
| 2441 | |
|
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2442 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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2443 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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2444 |
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2445 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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2446 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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2447 |
| 0 | 2448 // Create I2C & C2I handlers |
| 2449 | |
|
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2450 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2451 if (buf != NULL) { |
| 1748 | 2452 CodeBuffer buffer(buf); |
|
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2453 short buffer_locs[20]; |
|
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2454 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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2455 sizeof(buffer_locs)/sizeof(relocInfo)); |
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2456 MacroAssembler _masm(&buffer); |
|
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2457 |
|
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2458 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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2459 total_args_passed, |
|
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2460 comp_args_on_stack, |
|
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|
2461 sig_bt, |
|
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2462 regs, |
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|
2463 fingerprint); |
| 0 | 2464 |
|
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|
2465 #ifdef ASSERT |
|
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|
2466 if (VerifyAdapterSharing) { |
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|
2467 if (shared_entry != NULL) { |
| 1748 | 2468 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
|
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|
2469 "code must match"); |
|
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|
2470 // Release the one just created and return the original |
|
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|
2471 _adapters->free_entry(entry); |
|
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|
2472 return shared_entry; |
|
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|
2473 } else { |
| 1748 | 2474 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
|
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2475 } |
|
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2476 } |
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|
2477 #endif |
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2478 |
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2479 B = AdapterBlob::create(&buffer); |
| 1748 | 2480 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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2481 } |
| 28 | 2482 if (B == NULL) { |
| 2483 // CodeCache is full, disable compilation | |
| 2484 // Ought to log this but compile log is only per compile thread | |
| 2485 // and we're some non descript Java thread. | |
| 1202 | 2486 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2487 CompileBroker::handle_full_code_cache(); | |
|
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2488 return NULL; // Out of CodeCache space |
| 28 | 2489 } |
| 1748 | 2490 entry->relocate(B->content_begin()); |
| 0 | 2491 #ifndef PRODUCT |
| 2492 // debugging suppport | |
| 2493 if (PrintAdapterHandlers) { | |
| 2494 tty->cr(); | |
|
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2495 tty->print_cr("i2c argument handler #%d for: %s %s (fingerprint = %s, %d bytes generated)", |
|
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|
2496 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
| 1748 | 2497 method->signature()->as_C_string(), fingerprint->as_string(), insts_size ); |
| 0 | 2498 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
| 1748 | 2499 Disassembler::decode(entry->get_i2c_entry(), entry->get_i2c_entry() + insts_size); |
| 0 | 2500 } |
| 2501 #endif | |
| 2502 | |
|
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|
2503 _adapters->add(entry); |
| 0 | 2504 } |
| 2505 // Outside of the lock | |
| 2506 if (B != NULL) { | |
| 2507 char blob_id[256]; | |
| 2508 jio_snprintf(blob_id, | |
| 2509 sizeof(blob_id), | |
|
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|
2510 "%s(%s)@" PTR_FORMAT, |
|
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2511 B->name(), |
|
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|
2512 fingerprint->as_string(), |
| 1748 | 2513 B->content_begin()); |
| 2514 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
| 0 | 2515 |
| 2516 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 1748 | 2517 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
| 0 | 2518 } |
| 2519 } | |
|
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|
2520 return entry; |
| 0 | 2521 } |
| 2522 | |
| 2523 void AdapterHandlerEntry::relocate(address new_base) { | |
| 2524 ptrdiff_t delta = new_base - _i2c_entry; | |
| 2525 _i2c_entry += delta; | |
| 2526 _c2i_entry += delta; | |
| 2527 _c2i_unverified_entry += delta; | |
| 2528 } | |
| 2529 | |
|
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|
2530 |
|
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|
2531 void AdapterHandlerEntry::deallocate() { |
|
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|
2532 delete _fingerprint; |
|
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|
2533 #ifdef ASSERT |
|
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|
2534 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code); |
|
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|
2535 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig); |
|
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|
2536 #endif |
|
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|
2537 } |
|
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diff
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|
2538 |
|
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diff
changeset
|
2539 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2540 #ifdef ASSERT |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2541 // Capture the code before relocation so that it can be compared |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2542 // against other versions. If the code is captured after relocation |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2543 // then relative instructions won't be equivalent. |
|
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diff
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|
2544 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
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diff
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|
2545 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2546 _code_length = length; |
|
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diff
changeset
|
2547 memcpy(_saved_code, buffer, length); |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2548 _total_args_passed = total_args_passed; |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2549 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed); |
|
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|
2550 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
|
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|
2551 } |
|
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diff
changeset
|
2552 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2553 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2554 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
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|
2555 if (length != _code_length) { |
|
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diff
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|
2556 return false; |
|
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diff
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|
2557 } |
|
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diff
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|
2558 for (int i = 0; i < length; i++) { |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2559 if (buffer[i] != _saved_code[i]) { |
|
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|
2560 return false; |
|
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diff
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|
2561 } |
|
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diff
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|
2562 } |
|
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diff
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|
2563 return true; |
|
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diff
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|
2564 } |
|
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diff
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|
2565 #endif |
|
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|
2566 |
|
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|
2567 |
| 0 | 2568 // Create a native wrapper for this native method. The wrapper converts the |
| 2569 // java compiled calling convention to the native convention, handlizes | |
| 2570 // arguments, and transitions to native. On return from the native we transition | |
| 2571 // back to java blocking if a safepoint is in progress. | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
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|
2572 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
| 0 | 2573 ResourceMark rm; |
| 2574 nmethod* nm = NULL; | |
| 2575 | |
| 2576 assert(method->has_native_function(), "must have something valid to call!"); | |
| 2577 | |
| 2578 { | |
| 2579 // perform the work while holding the lock, but perform any printing outside the lock | |
| 2580 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2581 // See if somebody beat us to it | |
| 2582 nm = method->code(); | |
| 2583 if (nm) { | |
| 2584 return nm; | |
| 2585 } | |
| 2586 | |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2587 ResourceMark rm; |
| 0 | 2588 |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2589 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
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diff
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|
2590 if (buf != NULL) { |
| 1748 | 2591 CodeBuffer buffer(buf); |
|
742
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|
2592 double locs_buf[20]; |
|
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|
2593 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
45463a04ca27
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|
2594 MacroAssembler _masm(&buffer); |
|
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|
2595 |
|
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|
2596 // Fill in the signature array, for the calling-convention call. |
|
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|
2597 int total_args_passed = method->size_of_parameters(); |
| 0 | 2598 |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2599 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed); |
|
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|
2600 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair,total_args_passed); |
|
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|
2601 int i=0; |
|
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|
2602 if( !method->is_static() ) // Pass in receiver first |
|
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|
2603 sig_bt[i++] = T_OBJECT; |
|
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diff
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|
2604 SignatureStream ss(method->signature()); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2605 for( ; !ss.at_return_type(); ss.next()) { |
|
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|
2606 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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|
2607 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
45463a04ca27
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|
2608 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2609 } |
|
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|
2610 assert( i==total_args_passed, "" ); |
|
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|
2611 BasicType ret_type = ss.type(); |
|
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|
2612 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2613 // Now get the compiled-Java layout as input arguments |
|
45463a04ca27
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diff
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|
2614 int comp_args_on_stack; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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710
diff
changeset
|
2615 comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
45463a04ca27
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|
2616 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2617 // Generate the compiled-to-native wrapper code |
|
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diff
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|
2618 nm = SharedRuntime::generate_native_wrapper(&_masm, |
|
45463a04ca27
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diff
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|
2619 method, |
|
2405
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7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
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|
2620 compile_id, |
|
742
45463a04ca27
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kvn
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710
diff
changeset
|
2621 total_args_passed, |
|
45463a04ca27
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kvn
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710
diff
changeset
|
2622 comp_args_on_stack, |
|
45463a04ca27
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kvn
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diff
changeset
|
2623 sig_bt,regs, |
|
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|
2624 ret_type); |
| 0 | 2625 } |
| 2626 } | |
| 2627 | |
| 2628 // Must unlock before calling set_code | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
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1681
diff
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|
2629 |
| 0 | 2630 // Install the generated code. |
| 2631 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2632 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2633 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2634 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2635 } |
| 0 | 2636 method->set_code(method, nm); |
| 2637 nm->post_compiled_method_load_event(); | |
| 2638 } else { | |
| 2639 // CodeCache is full, disable compilation | |
| 1202 | 2640 CompileBroker::handle_full_code_cache(); |
| 0 | 2641 } |
| 2642 return nm; | |
| 2643 } | |
| 2644 | |
|
116
018d5b58dd4f
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kamg
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62
diff
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|
2645 #ifdef HAVE_DTRACE_H |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2646 // Create a dtrace nmethod for this method. The wrapper converts the |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2647 // java compiled calling convention to the native convention, makes a dummy call |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2648 // (actually nops for the size of the call instruction, which become a trap if |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2649 // probe is enabled). The returns to the caller. Since this all looks like a |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2650 // leaf no thread transition is needed. |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2651 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2652 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2653 ResourceMark rm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2654 nmethod* nm = NULL; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2655 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2656 if (PrintCompilation) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2657 ttyLocker ttyl; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2658 tty->print("--- n%s "); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2659 method->print_short_name(tty); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2660 if (method->is_static()) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2661 tty->print(" (static)"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2662 } |
|
018d5b58dd4f
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62
diff
changeset
|
2663 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2664 } |
|
018d5b58dd4f
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diff
changeset
|
2665 |
|
018d5b58dd4f
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62
diff
changeset
|
2666 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2667 // perform the work while holding the lock, but perform any printing |
|
018d5b58dd4f
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diff
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|
2668 // outside the lock |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2669 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
018d5b58dd4f
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62
diff
changeset
|
2670 // See if somebody beat us to it |
|
018d5b58dd4f
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diff
changeset
|
2671 nm = method->code(); |
|
018d5b58dd4f
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diff
changeset
|
2672 if (nm) { |
|
018d5b58dd4f
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diff
changeset
|
2673 return nm; |
|
018d5b58dd4f
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kamg
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62
diff
changeset
|
2674 } |
|
018d5b58dd4f
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changeset
|
2675 |
|
742
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changeset
|
2676 ResourceMark rm; |
|
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|
2677 |
|
45463a04ca27
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changeset
|
2678 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
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diff
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|
2679 if (buf != NULL) { |
| 1748 | 2680 CodeBuffer buffer(buf); |
|
742
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changeset
|
2681 // Need a few relocation entries |
|
45463a04ca27
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diff
changeset
|
2682 double locs_buf[20]; |
|
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changeset
|
2683 buffer.insts()->initialize_shared_locs( |
|
116
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|
2684 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
742
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|
2685 MacroAssembler _masm(&buffer); |
|
116
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|
2686 |
|
742
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|
2687 // Generate the compiled-to-native wrapper code |
|
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|
2688 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
|
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2689 } |
|
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2690 } |
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2691 return nm; |
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2692 } |
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2693 |
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2694 // the dtrace method needs to convert java lang string to utf8 string. |
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2695 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
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2696 typeArrayOop jlsValue = java_lang_String::value(src); |
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2697 int jlsOffset = java_lang_String::offset(src); |
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2698 int jlsLen = java_lang_String::length(src); |
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2699 jchar* jlsPos = (jlsLen == 0) ? NULL : |
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2700 jlsValue->char_at_addr(jlsOffset); |
|
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2701 assert(typeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
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2702 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
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2703 } |
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2704 #endif // ndef HAVE_DTRACE_H |
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2705 |
| 0 | 2706 // ------------------------------------------------------------------------- |
| 2707 // Java-Java calling convention | |
| 2708 // (what you use when Java calls Java) | |
| 2709 | |
| 2710 //------------------------------name_for_receiver---------------------------------- | |
| 2711 // For a given signature, return the VMReg for parameter 0. | |
| 2712 VMReg SharedRuntime::name_for_receiver() { | |
| 2713 VMRegPair regs; | |
| 2714 BasicType sig_bt = T_OBJECT; | |
| 2715 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2716 // Return argument 0 register. In the LP64 build pointers | |
| 2717 // take 2 registers, but the VM wants only the 'main' name. | |
| 2718 return regs.first(); | |
| 2719 } | |
| 2720 | |
|
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2721 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
| 0 | 2722 // This method is returning a data structure allocating as a |
| 2723 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2724 char *s = sig->as_C_string(); | |
| 2725 int len = (int)strlen(s); | |
| 2726 *s++; len--; // Skip opening paren | |
| 2727 char *t = s+len; | |
| 2728 while( *(--t) != ')' ) ; // Find close paren | |
| 2729 | |
| 2730 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2731 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2732 int cnt = 0; | |
|
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2733 if (has_receiver) { |
| 0 | 2734 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2735 } | |
| 2736 | |
| 2737 while( s < t ) { | |
| 2738 switch( *s++ ) { // Switch on signature character | |
| 2739 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2740 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2741 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2742 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2743 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2744 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2745 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2746 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2747 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2748 case 'L': // Oop | |
| 2749 while( *s++ != ';' ) ; // Skip signature | |
| 2750 sig_bt[cnt++] = T_OBJECT; | |
| 2751 break; | |
| 2752 case '[': { // Array | |
| 2753 do { // Skip optional size | |
| 2754 while( *s >= '0' && *s <= '9' ) s++; | |
| 2755 } while( *s++ == '[' ); // Nested arrays? | |
| 2756 // Skip element type | |
| 2757 if( s[-1] == 'L' ) | |
| 2758 while( *s++ != ';' ) ; // Skip signature | |
| 2759 sig_bt[cnt++] = T_ARRAY; | |
| 2760 break; | |
| 2761 } | |
| 2762 default : ShouldNotReachHere(); | |
| 2763 } | |
| 2764 } | |
| 2765 assert( cnt < 256, "grow table size" ); | |
| 2766 | |
| 2767 int comp_args_on_stack; | |
| 2768 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2769 | |
| 2770 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2771 // we must add that in to get "true" stack offsets. | |
| 2772 | |
| 2773 if (comp_args_on_stack) { | |
| 2774 for (int i = 0; i < cnt; i++) { | |
| 2775 VMReg reg1 = regs[i].first(); | |
| 2776 if( reg1->is_stack()) { | |
| 2777 // Yuck | |
| 2778 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2779 } | |
| 2780 VMReg reg2 = regs[i].second(); | |
| 2781 if( reg2->is_stack()) { | |
| 2782 // Yuck | |
| 2783 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2784 } | |
| 2785 regs[i].set_pair(reg2, reg1); | |
| 2786 } | |
| 2787 } | |
| 2788 | |
| 2789 // results | |
| 2790 *arg_size = cnt; | |
| 2791 return regs; | |
| 2792 } | |
| 2793 | |
| 2794 // OSR Migration Code | |
| 2795 // | |
| 2796 // This code is used convert interpreter frames into compiled frames. It is | |
| 2797 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2798 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2799 // active locks are inflated to allow them to move. The displaced headers and | |
| 2800 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2801 // back to the compiled code. The compiled code then pops the current | |
| 2802 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2803 // copies the interpreter locals and displaced headers where it wants. | |
| 2804 // Finally it calls back to free the temp buffer. | |
| 2805 // | |
| 2806 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2807 | |
| 2808 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2809 | |
| 2810 #ifdef IA64 | |
| 2811 ShouldNotReachHere(); // NYI | |
| 2812 #endif /* IA64 */ | |
| 2813 | |
| 2814 // | |
| 2815 // This code is dependent on the memory layout of the interpreter local | |
| 2816 // array and the monitors. On all of our platforms the layout is identical | |
| 2817 // so this code is shared. If some platform lays the their arrays out | |
| 2818 // differently then this code could move to platform specific code or | |
| 2819 // the code here could be modified to copy items one at a time using | |
| 2820 // frame accessor methods and be platform independent. | |
| 2821 | |
| 2822 frame fr = thread->last_frame(); | |
| 2823 assert( fr.is_interpreted_frame(), "" ); | |
| 2824 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2825 | |
| 2826 // Figure out how many monitors are active. | |
| 2827 int active_monitor_count = 0; | |
| 2828 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2829 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2830 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2831 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2832 } | |
| 2833 | |
| 2834 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2835 // could double check it. | |
| 2836 | |
| 2837 methodOop moop = fr.interpreter_frame_method(); | |
| 2838 int max_locals = moop->max_locals(); | |
| 2839 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2840 int buf_size_words = max_locals + active_monitor_count*2; | |
| 2841 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words); | |
| 2842 | |
| 2843 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2844 // Since there's no GC I can copy the oops blindly. | |
| 2845 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2846 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2847 (HeapWord*)&buf[0], |
| 2848 max_locals); | |
| 2849 | |
| 2850 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2851 int i = max_locals; | |
| 2852 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2853 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2854 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2855 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2856 BasicLock *lock = kptr2->lock(); | |
| 2857 // Inflate so the displaced header becomes position-independent | |
| 2858 if (lock->displaced_header()->is_unlocked()) | |
| 2859 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2860 // Now the displaced header is free to move | |
| 2861 buf[i++] = (intptr_t)lock->displaced_header(); | |
| 2862 buf[i++] = (intptr_t)kptr2->obj(); | |
| 2863 } | |
| 2864 } | |
| 2865 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2866 | |
| 2867 return buf; | |
| 2868 JRT_END | |
| 2869 | |
| 2870 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 2871 FREE_C_HEAP_ARRAY(intptr_t,buf); | |
| 2872 JRT_END | |
| 2873 | |
| 2874 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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2875 AdapterHandlerTableIterator iter(_adapters); |
|
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2876 while (iter.has_next()) { |
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2877 AdapterHandlerEntry* a = iter.next(); |
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2878 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 2879 } |
| 2880 return false; | |
| 2881 } | |
| 2882 | |
|
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2883 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
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2884 AdapterHandlerTableIterator iter(_adapters); |
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2885 while (iter.has_next()) { |
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2886 AdapterHandlerEntry* a = iter.next(); |
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2887 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) { |
|
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2888 st->print("Adapter for signature: "); |
|
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2889 st->print_cr("%s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
|
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2890 a->fingerprint()->as_string(), |
|
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2891 a->get_i2c_entry(), a->get_c2i_entry(), a->get_c2i_unverified_entry()); |
|
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2892 |
| 0 | 2893 return; |
| 2894 } | |
| 2895 } | |
| 2896 assert(false, "Should have found handler"); | |
| 2897 } | |
|
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2898 |
|
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2899 #ifndef PRODUCT |
|
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2900 |
|
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2901 void AdapterHandlerLibrary::print_statistics() { |
|
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2902 _adapters->print_statistics(); |
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2903 } |
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2904 |
| 0 | 2905 #endif /* PRODUCT */ |