Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 4979:18a5539bf19b
More diff vs hsx24 optimizations.
| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Mon, 27 Feb 2012 21:43:51 +0100 |
| parents | 33df1aeaebbf |
| children | 0ebca2e35ca5 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "code/compiledIC.hpp" | |
| 29 #include "code/scopeDesc.hpp" | |
| 30 #include "code/vtableStubs.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
| 32 #include "compiler/compileBroker.hpp" | |
| 33 #include "compiler/compilerOracle.hpp" | |
| 34 #include "interpreter/interpreter.hpp" | |
| 35 #include "interpreter/interpreterRuntime.hpp" | |
| 36 #include "memory/gcLocker.inline.hpp" | |
| 37 #include "memory/universe.inline.hpp" | |
| 38 #include "oops/oop.inline.hpp" | |
| 39 #include "prims/forte.hpp" | |
| 40 #include "prims/jvmtiExport.hpp" | |
| 41 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
| 42 #include "prims/methodHandles.hpp" | |
| 43 #include "prims/nativeLookup.hpp" | |
| 44 #include "runtime/arguments.hpp" | |
| 45 #include "runtime/biasedLocking.hpp" | |
| 46 #include "runtime/handles.inline.hpp" | |
| 47 #include "runtime/init.hpp" | |
| 48 #include "runtime/interfaceSupport.hpp" | |
| 49 #include "runtime/javaCalls.hpp" | |
| 50 #include "runtime/sharedRuntime.hpp" | |
| 51 #include "runtime/stubRoutines.hpp" | |
| 52 #include "runtime/vframe.hpp" | |
| 53 #include "runtime/vframeArray.hpp" | |
| 54 #include "utilities/copy.hpp" | |
| 55 #include "utilities/dtrace.hpp" | |
| 56 #include "utilities/events.hpp" | |
| 57 #include "utilities/hashtable.inline.hpp" | |
| 58 #include "utilities/xmlstream.hpp" | |
| 59 #ifdef TARGET_ARCH_x86 | |
| 60 # include "nativeInst_x86.hpp" | |
| 61 # include "vmreg_x86.inline.hpp" | |
| 62 #endif | |
| 63 #ifdef TARGET_ARCH_sparc | |
| 64 # include "nativeInst_sparc.hpp" | |
| 65 # include "vmreg_sparc.inline.hpp" | |
| 66 #endif | |
| 67 #ifdef TARGET_ARCH_zero | |
| 68 # include "nativeInst_zero.hpp" | |
| 69 # include "vmreg_zero.inline.hpp" | |
| 70 #endif | |
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71 #ifdef TARGET_ARCH_arm |
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72 # include "nativeInst_arm.hpp" |
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73 # include "vmreg_arm.inline.hpp" |
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74 #endif |
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75 #ifdef TARGET_ARCH_ppc |
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76 # include "nativeInst_ppc.hpp" |
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77 # include "vmreg_ppc.inline.hpp" |
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78 #endif |
| 1972 | 79 #ifdef COMPILER1 |
| 80 #include "c1/c1_Runtime1.hpp" | |
| 81 #endif | |
| 82 | |
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83 // Shared stub locations |
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84 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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85 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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86 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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87 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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88 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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89 |
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90 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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91 RicochetBlob* SharedRuntime::_ricochet_blob; |
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92 |
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93 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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94 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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95 |
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96 #ifdef COMPILER2 |
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97 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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98 #endif // COMPILER2 |
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99 |
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100 |
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101 //----------------------------generate_stubs----------------------------------- |
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102 void SharedRuntime::generate_stubs() { |
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103 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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104 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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105 _resolve_opt_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_opt_virtual_call_C), "resolve_opt_virtual_call"); |
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106 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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107 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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108 |
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109 _polling_page_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), false); |
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110 _polling_page_return_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), true); |
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111 |
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112 generate_ricochet_blob(); |
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113 generate_deopt_blob(); |
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114 |
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115 #ifdef COMPILER2 |
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116 generate_uncommon_trap_blob(); |
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117 #endif // COMPILER2 |
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118 } |
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119 |
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120 //----------------------------generate_ricochet_blob--------------------------- |
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121 void SharedRuntime::generate_ricochet_blob() { |
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122 if (!EnableInvokeDynamic) return; // leave it as a null |
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123 |
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124 // allocate space for the code |
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125 ResourceMark rm; |
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126 // setup code generation tools |
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127 CodeBuffer buffer("ricochet_blob", 256 LP64_ONLY(+ 256), 256); // XXX x86 LP64L: 512, 512 |
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128 MacroAssembler* masm = new MacroAssembler(&buffer); |
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129 |
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130 int bounce_offset = -1, exception_offset = -1, frame_size_in_words = -1; |
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131 MethodHandles::RicochetFrame::generate_ricochet_blob(masm, &bounce_offset, &exception_offset, &frame_size_in_words); |
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132 |
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133 // ------------- |
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134 // make sure all code is generated |
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135 masm->flush(); |
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136 |
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137 // failed to generate? |
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138 if (bounce_offset < 0 || exception_offset < 0 || frame_size_in_words < 0) { |
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139 assert(false, "bad ricochet blob"); |
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140 return; |
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141 } |
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142 |
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143 _ricochet_blob = RicochetBlob::create(&buffer, bounce_offset, exception_offset, frame_size_in_words); |
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144 } |
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145 |
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146 |
| 0 | 147 #include <math.h> |
| 148 | |
| 4006 | 149 #ifndef USDT2 |
| 0 | 150 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
| 151 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 152 char*, int, char*, int, char*, int); | |
| 153 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 154 char*, int, char*, int, char*, int); | |
| 4006 | 155 #endif /* !USDT2 */ |
| 0 | 156 |
| 157 // Implementation of SharedRuntime | |
| 158 | |
| 159 #ifndef PRODUCT | |
| 160 // For statistics | |
| 161 int SharedRuntime::_ic_miss_ctr = 0; | |
| 162 int SharedRuntime::_wrong_method_ctr = 0; | |
| 163 int SharedRuntime::_resolve_static_ctr = 0; | |
| 164 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 165 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 166 int SharedRuntime::_implicit_null_throws = 0; | |
| 167 int SharedRuntime::_implicit_div0_throws = 0; | |
| 168 int SharedRuntime::_throw_null_ctr = 0; | |
| 169 | |
| 170 int SharedRuntime::_nof_normal_calls = 0; | |
| 171 int SharedRuntime::_nof_optimized_calls = 0; | |
| 172 int SharedRuntime::_nof_inlined_calls = 0; | |
| 173 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 174 int SharedRuntime::_nof_static_calls = 0; | |
| 175 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 176 int SharedRuntime::_nof_interface_calls = 0; | |
| 177 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 178 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 179 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 180 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 181 | |
| 182 int SharedRuntime::_new_instance_ctr=0; | |
| 183 int SharedRuntime::_new_array_ctr=0; | |
| 184 int SharedRuntime::_multi1_ctr=0; | |
| 185 int SharedRuntime::_multi2_ctr=0; | |
| 186 int SharedRuntime::_multi3_ctr=0; | |
| 187 int SharedRuntime::_multi4_ctr=0; | |
| 188 int SharedRuntime::_multi5_ctr=0; | |
| 189 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 190 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 191 int SharedRuntime::_mon_enter_ctr=0; | |
| 192 int SharedRuntime::_mon_exit_ctr=0; | |
| 193 int SharedRuntime::_partial_subtype_ctr=0; | |
| 194 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 195 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 196 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 197 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 198 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 199 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 200 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 201 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 202 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 203 int SharedRuntime::_find_handler_ctr=0; | |
| 204 int SharedRuntime::_rethrow_ctr=0; | |
| 205 | |
| 206 int SharedRuntime::_ICmiss_index = 0; | |
| 207 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 208 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 209 | |
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210 |
| 0 | 211 void SharedRuntime::trace_ic_miss(address at) { |
| 212 for (int i = 0; i < _ICmiss_index; i++) { | |
| 213 if (_ICmiss_at[i] == at) { | |
| 214 _ICmiss_count[i]++; | |
| 215 return; | |
| 216 } | |
| 217 } | |
| 218 int index = _ICmiss_index++; | |
| 219 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 220 _ICmiss_at[index] = at; | |
| 221 _ICmiss_count[index] = 1; | |
| 222 } | |
| 223 | |
| 224 void SharedRuntime::print_ic_miss_histogram() { | |
| 225 if (ICMissHistogram) { | |
| 226 tty->print_cr ("IC Miss Histogram:"); | |
| 227 int tot_misses = 0; | |
| 228 for (int i = 0; i < _ICmiss_index; i++) { | |
| 229 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 230 tot_misses += _ICmiss_count[i]; | |
| 231 } | |
| 232 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 233 } | |
| 234 } | |
| 235 #endif // PRODUCT | |
| 236 | |
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237 #ifndef SERIALGC |
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238 |
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239 // G1 write-barrier pre: executed before a pointer store. |
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240 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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241 if (orig == NULL) { |
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242 assert(false, "should be optimized out"); |
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243 return; |
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244 } |
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245 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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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 | |
|
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654 #ifdef GRAAL |
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655 // lookup exception handler for this pc |
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656 int catch_pco = ret_pc - nm->code_begin(); |
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657 ExceptionHandlerTable table(nm); |
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658 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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659 if (t != NULL) { |
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660 return nm->code_begin() + t->pco(); |
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661 } else { |
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662 // there is no exception handler for this pc => deoptimize |
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663 nm->make_not_entrant(); |
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664 JavaThread* thread = JavaThread::current(); |
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665 RegisterMap reg_map(thread); |
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666 frame runtime_frame = thread->last_frame(); |
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667 frame caller_frame = runtime_frame.sender(®_map); |
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668 Deoptimization::deoptimize_frame(thread, caller_frame.id()); |
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669 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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670 } |
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671 |
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672 #else |
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673 |
| 0 | 674 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
| 675 // determine handler bci, if any | |
| 676 EXCEPTION_MARK; | |
| 677 | |
| 678 int handler_bci = -1; | |
| 679 int scope_depth = 0; | |
| 680 if (!force_unwind) { | |
| 681 int bci = sd->bci(); | |
|
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682 bool recursive_exception = false; |
| 0 | 683 do { |
| 684 bool skip_scope_increment = false; | |
| 685 // exception handler lookup | |
| 686 KlassHandle ek (THREAD, exception->klass()); | |
| 687 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
| 688 if (HAS_PENDING_EXCEPTION) { | |
|
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689 recursive_exception = true; |
| 0 | 690 // We threw an exception while trying to find the exception handler. |
| 691 // Transfer the new exception to the exception handle which will | |
| 692 // be set into thread local storage, and do another lookup for an | |
| 693 // exception handler for this exception, this time starting at the | |
| 694 // BCI of the exception handler which caused the exception to be | |
| 695 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 696 // argument to ensure that the correct exception is thrown (4870175). | |
| 697 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 698 CLEAR_PENDING_EXCEPTION; | |
| 699 if (handler_bci >= 0) { | |
| 700 bci = handler_bci; | |
| 701 handler_bci = -1; | |
| 702 skip_scope_increment = true; | |
| 703 } | |
| 704 } | |
|
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705 else { |
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706 recursive_exception = false; |
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707 } |
| 0 | 708 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
| 709 sd = sd->sender(); | |
| 710 if (sd != NULL) { | |
| 711 bci = sd->bci(); | |
| 712 } | |
| 713 ++scope_depth; | |
| 714 } | |
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715 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
| 0 | 716 } |
| 717 | |
| 718 // found handling method => lookup exception handler | |
| 1748 | 719 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 720 |
| 721 ExceptionHandlerTable table(nm); | |
| 722 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 723 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 724 // Allow abbreviated catch tables. The idea is to allow a method | |
| 725 // to materialize its exceptions without committing to the exact | |
| 726 // routing of exceptions. In particular this is needed for adding | |
| 727 // a synthethic handler to unlock monitors when inlining | |
| 728 // synchonized methods since the unlock path isn't represented in | |
| 729 // the bytecodes. | |
| 730 t = table.entry_for(catch_pco, -1, 0); | |
| 731 } | |
| 732 | |
|
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733 #ifdef COMPILER1 |
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734 if (t == NULL && nm->is_compiled_by_c1()) { |
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735 assert(nm->unwind_handler_begin() != NULL, ""); |
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736 return nm->unwind_handler_begin(); |
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737 } |
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738 #endif |
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739 |
| 0 | 740 if (t == NULL) { |
| 741 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 742 tty->print_cr(" Exception:"); | |
| 743 exception->print(); | |
| 744 tty->cr(); | |
| 745 tty->print_cr(" Compiled exception table :"); | |
| 746 table.print(); | |
| 747 nm->print_code(); | |
| 748 guarantee(false, "missing exception handler"); | |
| 749 return NULL; | |
| 750 } | |
| 751 | |
| 1748 | 752 return nm->code_begin() + t->pco(); |
|
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|
753 #endif |
| 0 | 754 } |
| 755 | |
| 756 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 757 // These errors occur only at call sites | |
| 758 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 759 JRT_END | |
| 760 | |
|
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761 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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762 // These errors occur only at call sites |
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763 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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764 JRT_END |
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765 |
| 0 | 766 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 767 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 768 JRT_END | |
| 769 | |
| 770 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 771 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 772 JRT_END | |
| 773 | |
| 774 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 775 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 776 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 777 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 778 JRT_END | |
| 779 | |
| 780 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 781 // We avoid using the normal exception construction in this case because | |
| 782 // it performs an upcall to Java, and we're already out of stack space. | |
| 783 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
| 784 oop exception_oop = instanceKlass::cast(k)->allocate_instance(CHECK); | |
| 785 Handle exception (thread, exception_oop); | |
| 786 if (StackTraceInThrowable) { | |
| 787 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 788 } | |
| 789 throw_and_post_jvmti_exception(thread, exception); | |
| 790 JRT_END | |
| 791 | |
|
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792 address SharedRuntime::deoptimization_continuation(JavaThread* thread, address pc, nmethod* nm) |
|
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793 { |
|
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|
794 if (TraceSignals) { |
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|
795 tty->print_cr(err_msg("Deoptimizing on implicit exception at relative pc=%d in method %s", pc - nm->entry_point(), nm->method()->name()->as_C_string())); |
|
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796 } |
|
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797 thread->_ScratchA = (intptr_t)pc; |
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798 return (SharedRuntime::deopt_blob()->jmp_uncommon_trap()); |
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|
799 } |
|
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|
800 |
|
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801 JRT_ENTRY(void, SharedRuntime::throw_WrongMethodTypeException(JavaThread* thread, oopDesc* required, oopDesc* actual)) |
|
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802 assert(thread == JavaThread::current() && required->is_oop() && actual->is_oop(), "bad args"); |
|
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|
803 ResourceMark rm; |
|
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|
804 char* message = SharedRuntime::generate_wrong_method_type_message(thread, required, actual); |
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|
805 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_invoke_WrongMethodTypeException(), message); |
|
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|
806 JRT_END |
|
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|
807 |
| 0 | 808 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
| 809 address pc, | |
| 810 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 811 { | |
| 812 address target_pc = NULL; | |
| 813 | |
| 814 if (Interpreter::contains(pc)) { | |
| 815 #ifdef CC_INTERP | |
| 816 // C++ interpreter doesn't throw implicit exceptions | |
| 817 ShouldNotReachHere(); | |
| 818 #else | |
| 819 switch (exception_kind) { | |
| 820 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 821 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 822 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 823 default: ShouldNotReachHere(); | |
| 824 } | |
| 825 #endif // !CC_INTERP | |
| 826 } else { | |
| 827 switch (exception_kind) { | |
| 828 case STACK_OVERFLOW: { | |
| 829 // Stack overflow only occurs upon frame setup; the callee is | |
| 830 // going to be unwound. Dispatch to a shared runtime stub | |
| 831 // which will cause the StackOverflowError to be fabricated | |
| 832 // and processed. | |
| 833 // For stack overflow in deoptimization blob, cleanup thread. | |
| 834 if (thread->deopt_mark() != NULL) { | |
| 835 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 836 } | |
| 4944 | 837 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
| 0 | 838 return StubRoutines::throw_StackOverflowError_entry(); |
| 839 } | |
| 840 | |
| 841 case IMPLICIT_NULL: { | |
| 842 if (VtableStubs::contains(pc)) { | |
| 843 // We haven't yet entered the callee frame. Fabricate an | |
| 844 // exception and begin dispatching it in the caller. Since | |
| 845 // the caller was at a call site, it's safe to destroy all | |
| 846 // caller-saved registers, as these entry points do. | |
| 847 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
|
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848 |
|
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849 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
|
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850 if (vt_stub == NULL) return NULL; |
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851 |
| 0 | 852 if (vt_stub->is_abstract_method_error(pc)) { |
| 853 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 4944 | 854 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
| 0 | 855 return StubRoutines::throw_AbstractMethodError_entry(); |
| 856 } else { | |
| 4944 | 857 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
| 0 | 858 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 859 } | |
| 860 } else { | |
| 861 CodeBlob* cb = CodeCache::find_blob(pc); | |
|
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862 |
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863 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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864 if (cb == NULL) return NULL; |
| 0 | 865 |
| 866 // Exception happened in CodeCache. Must be either: | |
| 867 // 1. Inline-cache check in C2I handler blob, | |
| 868 // 2. Inline-cache check in nmethod, or | |
| 869 // 3. Implict null exception in nmethod | |
| 870 | |
| 871 if (!cb->is_nmethod()) { | |
|
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872 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
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873 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
| 4944 | 874 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
| 0 | 875 // There is no handler here, so we will simply unwind. |
| 876 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 877 } | |
| 878 | |
| 879 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 880 nmethod* nm = (nmethod*)cb; | |
| 881 if (nm->inlinecache_check_contains(pc)) { | |
| 882 // exception happened inside inline-cache check code | |
| 883 // => the nmethod is not yet active (i.e., the frame | |
| 884 // is not set up yet) => use return address pushed by | |
| 885 // caller => don't push another return address | |
| 4944 | 886 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
| 0 | 887 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 888 } | |
| 889 | |
| 890 #ifndef PRODUCT | |
| 891 _implicit_null_throws++; | |
| 892 #endif | |
|
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893 #ifdef GRAAL |
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894 target_pc = deoptimization_continuation(thread, pc, nm); |
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895 #else |
| 0 | 896 target_pc = nm->continuation_for_implicit_exception(pc); |
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897 #endif |
| 1250 | 898 // If there's an unexpected fault, target_pc might be NULL, |
| 899 // in which case we want to fall through into the normal | |
| 900 // error handling code. | |
| 0 | 901 } |
| 902 | |
| 903 break; // fall through | |
| 904 } | |
| 905 | |
| 906 | |
| 907 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 908 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 909 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 910 #ifndef PRODUCT | |
| 911 _implicit_div0_throws++; | |
| 912 #endif | |
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913 #ifdef GRAAL |
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914 if (TraceSignals) { |
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915 tty->print_cr("graal implicit div0"); |
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916 } |
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917 target_pc = deoptimization_continuation(thread, pc, nm); |
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918 #else |
| 0 | 919 target_pc = nm->continuation_for_implicit_exception(pc); |
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920 #endif |
| 1250 | 921 // If there's an unexpected fault, target_pc might be NULL, |
| 922 // in which case we want to fall through into the normal | |
| 923 // error handling code. | |
| 0 | 924 break; // fall through |
| 925 } | |
| 926 | |
| 927 default: ShouldNotReachHere(); | |
| 928 } | |
| 929 | |
| 930 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 931 | |
| 932 // for AbortVMOnException flag | |
| 933 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 934 if (exception_kind == IMPLICIT_NULL) { | |
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935 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 936 } else { |
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937 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 938 } |
| 939 return target_pc; | |
| 940 } | |
| 941 | |
| 942 ShouldNotReachHere(); | |
| 943 return NULL; | |
| 944 } | |
| 945 | |
| 946 | |
| 947 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
| 948 { | |
| 949 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
| 950 } | |
| 951 JNI_END | |
| 952 | |
| 953 | |
| 954 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 955 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 956 } | |
| 957 | |
| 958 | |
| 959 #ifndef PRODUCT | |
| 960 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 961 const frame f = thread->last_frame(); | |
| 962 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 963 #ifndef PRODUCT | |
| 964 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 965 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 966 #endif // !PRODUCT | |
| 967 return preserve_this_value; | |
| 968 JRT_END | |
| 969 #endif // !PRODUCT | |
| 970 | |
| 971 | |
| 972 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 973 os::yield_all(attempts); | |
| 974 JRT_END | |
| 975 | |
| 976 | |
| 977 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 978 assert(obj->is_oop(), "must be a valid oop"); | |
| 979 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
| 980 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
| 981 JRT_END | |
| 982 | |
| 983 | |
| 984 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 985 if (thread != NULL) { | |
| 986 if (thread->is_Java_thread()) { | |
| 987 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 988 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 989 } | |
| 990 } | |
| 991 return 0; | |
| 992 } | |
| 993 | |
| 994 /** | |
| 995 * This function ought to be a void function, but cannot be because | |
| 996 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 997 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 998 */ | |
| 999 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 1000 return dtrace_object_alloc_base(Thread::current(), o); | |
| 1001 } | |
| 1002 | |
| 1003 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 1004 assert(DTraceAllocProbes, "wrong call"); | |
| 1005 Klass* klass = o->blueprint(); | |
| 1006 int size = o->size(); | |
|
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1007 Symbol* name = klass->name(); |
| 4006 | 1008 #ifndef USDT2 |
| 0 | 1009 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 1010 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 4006 | 1011 #else /* USDT2 */ |
| 1012 HOTSPOT_OBJECT_ALLOC( | |
| 1013 get_java_tid(thread), | |
| 1014 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 1015 #endif /* USDT2 */ | |
| 0 | 1016 return 0; |
| 1017 } | |
| 1018 | |
| 1019 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
| 1020 JavaThread* thread, methodOopDesc* method)) | |
| 1021 assert(DTraceMethodProbes, "wrong call"); | |
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1022 Symbol* kname = method->klass_name(); |
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1023 Symbol* name = method->name(); |
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1024 Symbol* sig = method->signature(); |
| 4006 | 1025 #ifndef USDT2 |
| 0 | 1026 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 1027 kname->bytes(), kname->utf8_length(), | |
| 1028 name->bytes(), name->utf8_length(), | |
| 1029 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1030 #else /* USDT2 */ |
| 1031 HOTSPOT_METHOD_ENTRY( | |
| 1032 get_java_tid(thread), | |
| 1033 (char *) kname->bytes(), kname->utf8_length(), | |
| 1034 (char *) name->bytes(), name->utf8_length(), | |
| 1035 (char *) sig->bytes(), sig->utf8_length()); | |
| 1036 #endif /* USDT2 */ | |
| 0 | 1037 return 0; |
| 1038 JRT_END | |
| 1039 | |
| 1040 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
| 1041 JavaThread* thread, methodOopDesc* method)) | |
| 1042 assert(DTraceMethodProbes, "wrong call"); | |
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1043 Symbol* kname = method->klass_name(); |
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1044 Symbol* name = method->name(); |
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1045 Symbol* sig = method->signature(); |
| 4006 | 1046 #ifndef USDT2 |
| 0 | 1047 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 1048 kname->bytes(), kname->utf8_length(), | |
| 1049 name->bytes(), name->utf8_length(), | |
| 1050 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1051 #else /* USDT2 */ |
| 1052 HOTSPOT_METHOD_RETURN( | |
| 1053 get_java_tid(thread), | |
| 1054 (char *) kname->bytes(), kname->utf8_length(), | |
| 1055 (char *) name->bytes(), name->utf8_length(), | |
| 1056 (char *) sig->bytes(), sig->utf8_length()); | |
| 1057 #endif /* USDT2 */ | |
| 0 | 1058 return 0; |
| 1059 JRT_END | |
| 1060 | |
| 1061 | |
| 1062 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 1063 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1064 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 1065 // vtable updates, etc. Caller frame must be compiled. | |
| 1066 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 1067 ResourceMark rm(THREAD); | |
| 1068 | |
| 1069 // last java frame on stack (which includes native call frames) | |
| 1070 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 1071 | |
| 1072 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 1073 } | |
| 1074 | |
| 1075 | |
| 1076 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 1077 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1078 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 1079 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1080 vframeStream& vfst, | |
| 1081 Bytecodes::Code& bc, | |
| 1082 CallInfo& callinfo, TRAPS) { | |
| 1083 Handle receiver; | |
| 1084 Handle nullHandle; //create a handy null handle for exception returns | |
| 1085 | |
| 1086 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1087 | |
| 1088 // Find caller and bci from vframe | |
| 1089 methodHandle caller (THREAD, vfst.method()); | |
| 1090 int bci = vfst.bci(); | |
| 1091 | |
| 1092 // Find bytecode | |
| 2142 | 1093 Bytecode_invoke bytecode(caller, bci); |
| 1094 bc = bytecode.java_code(); | |
| 1095 int bytecode_index = bytecode.index(); | |
| 0 | 1096 |
| 1097 // Find receiver for non-static call | |
| 1098 if (bc != Bytecodes::_invokestatic) { | |
| 1099 // This register map must be update since we need to find the receiver for | |
| 1100 // compiled frames. The receiver might be in a register. | |
| 1101 RegisterMap reg_map2(thread); | |
| 1102 frame stubFrame = thread->last_frame(); | |
| 1103 // Caller-frame is a compiled frame | |
| 1104 frame callerFrame = stubFrame.sender(®_map2); | |
| 1105 | |
| 2142 | 1106 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1107 if (callee.is_null()) { |
| 1108 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1109 } | |
| 1110 // Retrieve from a compiled argument list | |
| 1111 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1112 | |
| 1113 if (receiver.is_null()) { | |
| 1114 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1115 } | |
| 1116 } | |
| 1117 | |
| 1118 // Resolve method. This is parameterized by bytecode. | |
| 1119 constantPoolHandle constants (THREAD, caller->constants()); | |
| 1120 assert (receiver.is_null() || receiver->is_oop(), "wrong receiver"); | |
| 1121 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); | |
| 1122 | |
| 1123 #ifdef ASSERT | |
| 1124 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1125 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
| 0 | 1126 assert(receiver.not_null(), "should have thrown exception"); |
| 1127 KlassHandle receiver_klass (THREAD, receiver->klass()); | |
| 1128 klassOop rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); | |
| 1129 // klass is already loaded | |
| 1130 KlassHandle static_receiver_klass (THREAD, rk); | |
| 1131 assert(receiver_klass->is_subtype_of(static_receiver_klass()), "actual receiver must be subclass of static receiver klass"); | |
| 1132 if (receiver_klass->oop_is_instance()) { | |
| 1133 if (instanceKlass::cast(receiver_klass())->is_not_initialized()) { | |
| 1134 tty->print_cr("ERROR: Klass not yet initialized!!"); | |
| 1135 receiver_klass.print(); | |
| 1136 } | |
| 1137 assert (!instanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); | |
| 1138 } | |
| 1139 } | |
| 1140 #endif | |
| 1141 | |
| 1142 return receiver; | |
| 1143 } | |
| 1144 | |
| 1145 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1146 ResourceMark rm(THREAD); | |
| 1147 // We need first to check if any Java activations (compiled, interpreted) | |
| 1148 // exist on the stack since last JavaCall. If not, we need | |
| 1149 // to get the target method from the JavaCall wrapper. | |
| 1150 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1151 methodHandle callee_method; | |
| 1152 if (vfst.at_end()) { | |
| 1153 // No Java frames were found on stack since we did the JavaCall. | |
| 1154 // Hence the stack can only contain an entry_frame. We need to | |
| 1155 // find the target method from the stub frame. | |
| 1156 RegisterMap reg_map(thread, false); | |
| 1157 frame fr = thread->last_frame(); | |
| 1158 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1159 fr = fr.sender(®_map); | |
| 1160 assert(fr.is_entry_frame(), "must be"); | |
| 1161 // fr is now pointing to the entry frame. | |
| 1162 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1163 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1164 } else { | |
| 1165 Bytecodes::Code bc; | |
| 1166 CallInfo callinfo; | |
| 1167 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1168 callee_method = callinfo.selected_method(); | |
| 1169 } | |
| 1170 assert(callee_method()->is_method(), "must be"); | |
| 1171 return callee_method; | |
| 1172 } | |
| 1173 | |
| 1174 // Resolves a call. | |
| 1175 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1176 bool is_virtual, | |
| 1177 bool is_optimized, TRAPS) { | |
| 1178 methodHandle callee_method; | |
| 1179 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1180 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1181 int retry_count = 0; | |
| 1182 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1183 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1184 // If has a pending exception then there is no need to re-try to |
| 1185 // resolve this method. | |
| 1186 // If the method has been redefined, we need to try again. | |
| 1187 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1188 // require that java.lang.Object has been updated. | |
| 1189 | |
| 1190 // It is very unlikely that method is redefined more than 100 times | |
| 1191 // in the middle of resolve. If it is looping here more than 100 times | |
| 1192 // means then there could be a bug here. | |
| 1193 guarantee((retry_count++ < 100), | |
| 1194 "Could not resolve to latest version of redefined method"); | |
| 1195 // method is redefined in the middle of resolve so re-try. | |
| 1196 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1197 } | |
| 1198 } | |
| 1199 return callee_method; | |
| 1200 } | |
| 1201 | |
| 1202 // Resolves a call. The compilers generate code for calls that go here | |
| 1203 // and are patched with the real destination of the call. | |
| 1204 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1205 bool is_virtual, | |
| 1206 bool is_optimized, TRAPS) { | |
| 1207 | |
| 1208 ResourceMark rm(thread); | |
| 1209 RegisterMap cbl_map(thread, false); | |
| 1210 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1211 | |
| 1295 | 1212 CodeBlob* caller_cb = caller_frame.cb(); |
| 1213 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1214 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 0 | 1215 // make sure caller is not getting deoptimized |
| 1216 // and removed before we are done with it. | |
| 1217 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1218 nmethodLocker caller_lock(caller_nm); |
| 0 | 1219 |
| 1220 | |
| 1221 // determine call info & receiver | |
| 1222 // note: a) receiver is NULL for static calls | |
| 1223 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1224 CallInfo call_info; | |
| 1225 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1226 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1227 call_info, CHECK_(methodHandle())); | |
| 1228 methodHandle callee_method = call_info.selected_method(); | |
| 1229 | |
| 1230 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic) || | |
| 1231 ( is_virtual && invoke_code != Bytecodes::_invokestatic), "inconsistent bytecode"); | |
| 1232 | |
| 1233 #ifndef PRODUCT | |
| 1234 // tracing/debugging/statistics | |
| 1235 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1236 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1237 (&_resolve_static_ctr); | |
| 1238 Atomic::inc(addr); | |
| 1239 | |
| 1240 if (TraceCallFixup) { | |
| 1241 ResourceMark rm(thread); | |
| 1242 tty->print("resolving %s%s (%s) call to", | |
| 1243 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1244 Bytecodes::name(invoke_code)); | |
| 1245 callee_method->print_short_name(tty); | |
| 1246 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1247 } | |
| 1248 #endif | |
| 1249 | |
| 1295 | 1250 // JSR 292 |
| 1251 // If the resolved method is a MethodHandle invoke target the call | |
| 1252 // site must be a MethodHandle call site. | |
| 1253 if (callee_method->is_method_handle_invoke()) { | |
| 1254 assert(caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); | |
| 1255 } | |
| 1256 | |
| 0 | 1257 // Compute entry points. This might require generation of C2I converter |
| 1258 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1259 // computation of the entry points is independent of patching the call. We | |
| 1260 // always return the entry-point, but we only patch the stub if the call has | |
| 1261 // not been deoptimized. Return values: For a virtual call this is an | |
| 1262 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1263 // virtual this is just a destination address. | |
| 1264 | |
| 1265 StaticCallInfo static_call_info; | |
| 1266 CompiledICInfo virtual_call_info; | |
| 1267 | |
| 1268 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1269 // we are done patching the code. | |
| 1295 | 1270 nmethod* callee_nm = callee_method->code(); |
| 1271 nmethodLocker nl_callee(callee_nm); | |
| 0 | 1272 #ifdef ASSERT |
| 1295 | 1273 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1274 #endif |
| 1275 | |
| 1276 if (is_virtual) { | |
| 1277 assert(receiver.not_null(), "sanity check"); | |
| 1278 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
| 1279 KlassHandle h_klass(THREAD, receiver->klass()); | |
| 1280 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
| 1281 is_optimized, static_bound, virtual_call_info, | |
| 1282 CHECK_(methodHandle())); | |
| 1283 } else { | |
| 1284 // static call | |
| 1285 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1286 } | |
| 1287 | |
| 1288 // grab lock, check for deoptimization and potentially patch caller | |
| 1289 { | |
| 1290 MutexLocker ml_patch(CompiledIC_lock); | |
| 1291 | |
| 1292 // Now that we are ready to patch if the methodOop was redefined then | |
| 1293 // don't update call site and let the caller retry. | |
| 1294 | |
| 1295 if (!callee_method->is_old()) { | |
| 1296 #ifdef ASSERT | |
| 1297 // We must not try to patch to jump to an already unloaded method. | |
| 1298 if (dest_entry_point != 0) { | |
| 1299 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
| 1300 "should not unload nmethod while locked"); | |
| 1301 } | |
| 1302 #endif | |
| 1303 if (is_virtual) { | |
| 1304 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1305 if (inline_cache->is_clean()) { | |
| 1306 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1307 } | |
| 1308 } else { | |
| 1309 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1310 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1311 } | |
| 1312 } | |
| 1313 | |
| 1314 } // unlock CompiledIC_lock | |
| 1315 | |
| 1316 return callee_method; | |
| 1317 } | |
| 1318 | |
| 1319 | |
| 1320 // Inline caches exist only in compiled code | |
| 1321 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1322 #ifdef ASSERT | |
| 1323 RegisterMap reg_map(thread, false); | |
| 1324 frame stub_frame = thread->last_frame(); | |
| 1325 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1326 frame caller_frame = stub_frame.sender(®_map); | |
| 1327 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
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1328 assert(!caller_frame.is_ricochet_frame(), "unexpected frame"); |
| 0 | 1329 #endif /* ASSERT */ |
| 1330 | |
| 1331 methodHandle callee_method; | |
| 1332 JRT_BLOCK | |
| 1333 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
| 1334 // Return methodOop through TLS | |
| 1335 thread->set_vm_result(callee_method()); | |
| 1336 JRT_BLOCK_END | |
| 1337 // return compiled code entry point after potential safepoints | |
| 1338 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1339 return callee_method->verified_code_entry(); | |
| 1340 JRT_END | |
| 1341 | |
| 1342 | |
| 1343 // Handle call site that has been made non-entrant | |
| 1344 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1345 // 6243940 We might end up in here if the callee is deoptimized | |
| 1346 // as we race to call it. We don't want to take a safepoint if | |
| 1347 // the caller was interpreted because the caller frame will look | |
| 1348 // interpreted to the stack walkers and arguments are now | |
| 1349 // "compiled" so it is much better to make this transition | |
| 1350 // invisible to the stack walking code. The i2c path will | |
| 1351 // place the callee method in the callee_target. It is stashed | |
| 1352 // there because if we try and find the callee by normal means a | |
| 1353 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1354 RegisterMap reg_map(thread, false); | |
| 1355 frame stub_frame = thread->last_frame(); | |
| 1356 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1357 frame caller_frame = stub_frame.sender(®_map); | |
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1358 |
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1359 // MethodHandle invokes don't have a CompiledIC and should always |
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1360 // simply redispatch to the callee_target. |
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1361 address sender_pc = caller_frame.pc(); |
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1362 CodeBlob* sender_cb = caller_frame.cb(); |
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1363 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
| 1204 | 1364 bool is_mh_invoke_via_adapter = false; // Direct c2c call or via adapter? |
| 1365 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) { | |
| 1366 // If the callee_target is set, then we have come here via an i2c | |
| 1367 // adapter. | |
| 1368 methodOop callee = thread->callee_target(); | |
| 1369 if (callee != NULL) { | |
| 1370 assert(callee->is_method(), "sanity"); | |
| 1371 is_mh_invoke_via_adapter = true; | |
| 1372 } | |
| 1373 } | |
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1374 |
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1375 if (caller_frame.is_interpreted_frame() || |
| 1204 | 1376 caller_frame.is_entry_frame() || |
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1377 caller_frame.is_ricochet_frame() || |
| 1204 | 1378 is_mh_invoke_via_adapter) { |
| 0 | 1379 methodOop callee = thread->callee_target(); |
| 1380 guarantee(callee != NULL && callee->is_method(), "bad handshake"); | |
| 1381 thread->set_vm_result(callee); | |
| 1382 thread->set_callee_target(NULL); | |
| 1383 return callee->get_c2i_entry(); | |
| 1384 } | |
| 1385 | |
| 1386 // Must be compiled to compiled path which is safe to stackwalk | |
| 1387 methodHandle callee_method; | |
| 1388 JRT_BLOCK | |
| 1389 // Force resolving of caller (if we called from compiled frame) | |
| 1390 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
| 1391 thread->set_vm_result(callee_method()); | |
| 1392 JRT_BLOCK_END | |
| 1393 // return compiled code entry point after potential safepoints | |
| 1394 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1395 return callee_method->verified_code_entry(); | |
| 1396 JRT_END | |
| 1397 | |
| 1398 | |
| 1399 // resolve a static call and patch code | |
| 1400 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1401 methodHandle callee_method; | |
| 1402 JRT_BLOCK | |
| 1403 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
| 1404 thread->set_vm_result(callee_method()); | |
| 1405 JRT_BLOCK_END | |
| 1406 // return compiled code entry point after potential safepoints | |
| 1407 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1408 return callee_method->verified_code_entry(); | |
| 1409 JRT_END | |
| 1410 | |
| 1411 | |
| 1412 // resolve virtual call and update inline cache to monomorphic | |
| 1413 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1414 methodHandle callee_method; | |
| 1415 JRT_BLOCK | |
| 1416 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
| 1417 thread->set_vm_result(callee_method()); | |
| 1418 JRT_BLOCK_END | |
| 1419 // return compiled code entry point after potential safepoints | |
| 1420 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1421 return callee_method->verified_code_entry(); | |
| 1422 JRT_END | |
| 1423 | |
| 1424 | |
| 1425 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1426 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1427 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1428 methodHandle callee_method; | |
| 1429 JRT_BLOCK | |
| 1430 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
| 1431 thread->set_vm_result(callee_method()); | |
| 1432 JRT_BLOCK_END | |
| 1433 // return compiled code entry point after potential safepoints | |
| 1434 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1435 return callee_method->verified_code_entry(); | |
| 1436 JRT_END | |
| 1437 | |
| 1438 | |
| 1439 | |
| 1440 | |
| 1441 | |
| 1442 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1443 ResourceMark rm(thread); | |
| 1444 CallInfo call_info; | |
| 1445 Bytecodes::Code bc; | |
| 1446 | |
| 1447 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1448 // receivers for non-static calls | |
| 1449 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1450 CHECK_(methodHandle())); | |
| 1451 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1452 // If we fell thru to below we would think that the site was going megamorphic | |
| 1453 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1454 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1455 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1456 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1457 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1458 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1459 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1460 // | |
| 1461 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1462 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1463 if (TraceCallFixup) { | |
| 1464 RegisterMap reg_map(thread, false); | |
| 1465 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1466 ResourceMark rm(thread); | |
| 1467 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1468 callee_method->print_short_name(tty); | |
| 1469 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1470 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1471 } | |
| 1472 return callee_method; | |
| 1473 } | |
| 1474 | |
| 1475 methodHandle callee_method = call_info.selected_method(); | |
| 1476 | |
| 1477 bool should_be_mono = false; | |
| 1478 | |
| 1479 #ifndef PRODUCT | |
| 1480 Atomic::inc(&_ic_miss_ctr); | |
| 1481 | |
| 1482 // Statistics & Tracing | |
| 1483 if (TraceCallFixup) { | |
| 1484 ResourceMark rm(thread); | |
| 1485 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1486 callee_method->print_short_name(tty); | |
| 1487 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1488 } | |
| 1489 | |
| 1490 if (ICMissHistogram) { | |
| 1491 MutexLocker m(VMStatistic_lock); | |
| 1492 RegisterMap reg_map(thread, false); | |
| 1493 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1494 // produce statistics under the lock | |
| 1495 trace_ic_miss(f.pc()); | |
| 1496 } | |
| 1497 #endif | |
| 1498 | |
| 1499 // install an event collector so that when a vtable stub is created the | |
| 1500 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1501 // event can't be posted when the stub is created as locks are held | |
| 1502 // - instead the event will be deferred until the event collector goes | |
| 1503 // out of scope. | |
| 1504 JvmtiDynamicCodeEventCollector event_collector; | |
| 1505 | |
| 1506 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1507 // made non-entrant or we are called from interpreted. | |
| 1508 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1509 RegisterMap reg_map(thread, false); | |
| 1510 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1511 CodeBlob* cb = caller_frame.cb(); | |
| 1512 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1513 // Not a non-entrant nmethod, so find inline_cache | |
| 1514 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1515 bool should_be_mono = false; | |
| 1516 if (inline_cache->is_optimized()) { | |
| 1517 if (TraceCallFixup) { | |
| 1518 ResourceMark rm(thread); | |
| 1519 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1520 callee_method->print_short_name(tty); | |
| 1521 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1522 } | |
| 1523 should_be_mono = true; | |
| 1524 } else { | |
| 1525 compiledICHolderOop ic_oop = (compiledICHolderOop) inline_cache->cached_oop(); | |
| 1526 if ( ic_oop != NULL && ic_oop->is_compiledICHolder()) { | |
| 1527 | |
| 1528 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1529 // This isn't a real miss. We must have seen that compiled code | |
| 1530 // is now available and we want the call site converted to a | |
| 1531 // monomorphic compiled call site. | |
| 1532 // We can't assert for callee_method->code() != NULL because it | |
| 1533 // could have been deoptimized in the meantime | |
| 1534 if (TraceCallFixup) { | |
| 1535 ResourceMark rm(thread); | |
| 1536 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1537 callee_method->print_short_name(tty); | |
| 1538 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1539 } | |
| 1540 should_be_mono = true; | |
| 1541 } | |
| 1542 } | |
| 1543 } | |
| 1544 | |
| 1545 if (should_be_mono) { | |
| 1546 | |
| 1547 // We have a path that was monomorphic but was going interpreted | |
| 1548 // and now we have (or had) a compiled entry. We correct the IC | |
| 1549 // by using a new icBuffer. | |
| 1550 CompiledICInfo info; | |
| 1551 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1552 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1553 receiver_klass, | |
| 1554 inline_cache->is_optimized(), | |
| 1555 false, | |
| 1556 info, CHECK_(methodHandle())); | |
| 1557 inline_cache->set_to_monomorphic(info); | |
| 1558 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 1559 // Change to megamorphic | |
| 1560 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1561 } else { | |
| 1562 // Either clean or megamorphic | |
| 1563 } | |
| 1564 } | |
| 1565 } // Release CompiledIC_lock | |
| 1566 | |
| 1567 return callee_method; | |
| 1568 } | |
| 1569 | |
| 1570 // | |
| 1571 // Resets a call-site in compiled code so it will get resolved again. | |
| 1572 // This routines handles both virtual call sites, optimized virtual call | |
| 1573 // sites, and static call sites. Typically used to change a call sites | |
| 1574 // destination from compiled to interpreted. | |
| 1575 // | |
| 1576 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1577 ResourceMark rm(thread); | |
| 1578 RegisterMap reg_map(thread, false); | |
| 1579 frame stub_frame = thread->last_frame(); | |
| 1580 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1581 frame caller = stub_frame.sender(®_map); | |
| 1582 | |
| 1583 // Do nothing if the frame isn't a live compiled frame. | |
| 1584 // nmethod could be deoptimized by the time we get here | |
| 1585 // so no update to the caller is needed. | |
| 1586 | |
| 1587 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1588 | |
| 1589 address pc = caller.pc(); | |
| 1590 | |
| 1591 // Default call_addr is the location of the "basic" call. | |
| 1592 // Determine the address of the call we a reresolving. With | |
| 1593 // Inline Caches we will always find a recognizable call. | |
| 1594 // With Inline Caches disabled we may or may not find a | |
| 1595 // recognizable call. We will always find a call for static | |
| 1596 // calls and for optimized virtual calls. For vanilla virtual | |
| 1597 // calls it depends on the state of the UseInlineCaches switch. | |
| 1598 // | |
| 1599 // With Inline Caches disabled we can get here for a virtual call | |
| 1600 // for two reasons: | |
| 1601 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1602 // will run us thru handle_wrong_method and we will eventually | |
| 1603 // end up in the interpreter to throw the ame. | |
| 1604 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1605 // call and between the time we fetch the entry address and | |
| 1606 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1607 // we will wind up in the interprter (thru a c2i with c2). | |
| 1608 // | |
| 1609 address call_addr = NULL; | |
| 1610 { | |
| 1611 // Get call instruction under lock because another thread may be | |
| 1612 // busy patching it. | |
| 1613 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1614 // Location of call instruction | |
| 1615 if (NativeCall::is_call_before(pc)) { | |
| 1616 NativeCall *ncall = nativeCall_before(pc); | |
| 1617 call_addr = ncall->instruction_address(); | |
| 1618 } | |
| 1619 } | |
| 1620 | |
| 1621 // Check for static or virtual call | |
| 1622 bool is_static_call = false; | |
| 1623 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1624 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1625 // this is done with it. | |
| 1626 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1627 nmethodLocker nmlock(caller_nm); | |
| 1628 | |
| 1629 if (call_addr != NULL) { | |
| 1630 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1631 int ret = iter.next(); // Get item | |
| 1632 if (ret) { | |
| 1633 assert(iter.addr() == call_addr, "must find call"); | |
| 1634 if (iter.type() == relocInfo::static_call_type) { | |
| 1635 is_static_call = true; | |
| 1636 } else { | |
| 1637 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1638 iter.type() == relocInfo::opt_virtual_call_type | |
| 1639 , "unexpected relocInfo. type"); | |
| 1640 } | |
| 1641 } else { | |
| 1642 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1643 } | |
| 1644 | |
| 1645 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1646 // than directly setting it to the new destination, since resolving of calls | |
| 1647 // is always done through the same code path. (experience shows that it | |
| 1648 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1649 // to a wrong method). It should not be performance critical, since the | |
| 1650 // resolve is only done once. | |
| 1651 | |
| 1652 MutexLocker ml(CompiledIC_lock); | |
| 1653 // | |
| 1654 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1655 // as it is a waste of time | |
| 1656 // | |
| 1657 if (caller_nm->is_in_use()) { | |
| 1658 if (is_static_call) { | |
| 1659 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1660 ssc->set_to_clean(); | |
| 1661 } else { | |
| 1662 // compiled, dispatched call (which used to call an interpreted method) | |
| 1663 CompiledIC* inline_cache = CompiledIC_at(call_addr); | |
| 1664 inline_cache->set_to_clean(); | |
| 1665 } | |
| 1666 } | |
| 1667 } | |
| 1668 | |
| 1669 } | |
| 1670 | |
| 1671 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1672 | |
| 1673 | |
| 1674 #ifndef PRODUCT | |
| 1675 Atomic::inc(&_wrong_method_ctr); | |
| 1676 | |
| 1677 if (TraceCallFixup) { | |
| 1678 ResourceMark rm(thread); | |
| 1679 tty->print("handle_wrong_method reresolving call to"); | |
| 1680 callee_method->print_short_name(tty); | |
| 1681 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1682 } | |
| 1683 #endif | |
| 1684 | |
| 1685 return callee_method; | |
| 1686 } | |
| 1687 | |
| 1688 // --------------------------------------------------------------------------- | |
| 1689 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1690 // we were called by a compiled method. However we could have lost a race | |
| 1691 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1692 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1693 // so he no longer calls into the interpreter. |
| 1694 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(methodOopDesc* method, address caller_pc)) | |
| 1695 methodOop moop(method); | |
| 1696 | |
| 1697 address entry_point = moop->from_compiled_entry(); | |
| 1698 | |
| 1699 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1700 // been resolved yet, in which case this function will be called from | |
| 1701 // an nmethod that has been patched for deopt and we can ignore the | |
| 1702 // request for a fixup. | |
| 1703 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1704 // is now back to the i2c in that case we don't need to patch and if | |
| 1705 // we did we'd leap into space because the callsite needs to use | |
| 1706 // "to interpreter" stub in order to load up the methodOop. Don't | |
| 1707 // ask me how I know this... | |
| 1708 | |
| 1709 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1710 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1711 return; | |
| 1712 } | |
| 1713 | |
| 1714 // The check above makes sure this is a nmethod. | |
| 1715 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1716 assert(nm, "must be"); | |
| 1717 | |
|
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1718 // Get the return PC for the passed caller PC. |
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1719 address return_pc = caller_pc + frame::pc_return_offset; |
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1720 |
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1721 // Don't fixup method handle call sites as the executed method |
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1722 // handle adapters are doing the required MethodHandle chain work. |
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1723 if (nm->is_method_handle_return(return_pc)) { |
| 0 | 1724 return; |
| 1725 } | |
| 1726 | |
| 1727 // There is a benign race here. We could be attempting to patch to a compiled | |
| 1728 // entry point at the same time the callee is being deoptimized. If that is | |
| 1729 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1730 // call site with the same old data. clear_code will set code() to NULL | |
| 1731 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1732 // to patch. If we hit the window where the callee has a c2i in the | |
| 1733 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1734 // and patch the code with the same old data. Asi es la vida. | |
| 1735 | |
| 1736 if (moop->code() == NULL) return; | |
| 1737 | |
| 1205 | 1738 if (nm->is_in_use()) { |
| 0 | 1739 |
| 1740 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1741 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
|
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1742 if (NativeCall::is_call_before(return_pc)) { |
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1743 NativeCall *call = nativeCall_before(return_pc); |
| 0 | 1744 // |
| 1745 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1746 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1747 // see compiled code and attempt to patch the site by calling us. This would | |
| 1748 // then incorrectly convert the call site to optimized and its downhill from | |
| 1749 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1750 // just made a call site that could be megamorphic into a monomorphic site | |
| 1751 // for the rest of its life! Just another racing bug in the life of | |
| 1752 // fixup_callers_callsite ... | |
| 1753 // | |
|
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1754 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1755 iter.next(); |
| 1756 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1757 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1758 if ( typ != relocInfo::static_call_type && | |
| 1759 typ != relocInfo::opt_virtual_call_type && | |
| 1760 typ != relocInfo::static_stub_type) { | |
| 1761 return; | |
| 1762 } | |
| 1763 address destination = call->destination(); | |
| 1764 if (destination != entry_point) { | |
| 1765 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1766 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1767 if (callee == cb || callee->is_adapter_blob()) { | |
| 1768 // static call or optimized virtual | |
| 1769 if (TraceCallFixup) { | |
| 1204 | 1770 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1771 moop->print_short_name(tty); |
| 1772 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1773 } | |
| 1774 call->set_destination_mt_safe(entry_point); | |
| 1775 } else { | |
| 1776 if (TraceCallFixup) { | |
| 1777 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1778 moop->print_short_name(tty); | |
| 1779 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1780 } | |
| 1781 // assert is too strong could also be resolve destinations. | |
| 1782 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1783 } | |
| 1784 } else { | |
| 1785 if (TraceCallFixup) { | |
| 1204 | 1786 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1787 moop->print_short_name(tty); |
| 1788 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1789 } | |
| 1790 } | |
| 1791 } | |
| 1792 } | |
| 1793 IRT_END | |
| 1794 | |
| 1795 | |
| 1796 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1797 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1798 oopDesc* dest, jint dest_pos, | |
| 1799 jint length, | |
| 1800 JavaThread* thread)) { | |
| 1801 #ifndef PRODUCT | |
| 1802 _slow_array_copy_ctr++; | |
| 1803 #endif | |
| 1804 // Check if we have null pointers | |
| 1805 if (src == NULL || dest == NULL) { | |
| 1806 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1807 } | |
| 1808 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1809 // even though the copy_array API also performs dynamic checks to ensure | |
| 1810 // that src and dest are truly arrays (and are conformable). | |
| 1811 // The copy_array mechanism is awkward and could be removed, but | |
| 1812 // the compilers don't call this function except as a last resort, | |
| 1813 // so it probably doesn't matter. | |
| 1814 Klass::cast(src->klass())->copy_array((arrayOopDesc*)src, src_pos, | |
| 1815 (arrayOopDesc*)dest, dest_pos, | |
| 1816 length, thread); | |
| 1817 } | |
| 1818 JRT_END | |
| 1819 | |
| 1820 char* SharedRuntime::generate_class_cast_message( | |
| 1821 JavaThread* thread, const char* objName) { | |
| 1822 | |
| 1823 // Get target class name from the checkcast instruction | |
| 1824 vframeStream vfst(thread, true); | |
| 1825 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1826 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 0 | 1827 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at( |
| 2142 | 1828 cc.index(), thread)); |
| 0 | 1829 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1830 } | |
| 1831 | |
| 710 | 1832 char* SharedRuntime::generate_wrong_method_type_message(JavaThread* thread, |
| 1833 oopDesc* required, | |
| 1834 oopDesc* actual) { | |
|
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1835 if (TraceMethodHandles) { |
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1836 tty->print_cr("WrongMethodType thread="PTR_FORMAT" req="PTR_FORMAT" act="PTR_FORMAT"", |
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1837 thread, required, actual); |
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1838 } |
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1839 assert(EnableInvokeDynamic, ""); |
| 710 | 1840 oop singleKlass = wrong_method_type_is_for_single_argument(thread, required); |
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1841 char* message = NULL; |
| 710 | 1842 if (singleKlass != NULL) { |
| 1843 const char* objName = "argument or return value"; | |
| 1844 if (actual != NULL) { | |
| 1845 // be flexible about the junk passed in: | |
| 1846 klassOop ak = (actual->is_klass() | |
| 1847 ? (klassOop)actual | |
| 1848 : actual->klass()); | |
| 1849 objName = Klass::cast(ak)->external_name(); | |
| 1850 } | |
| 1851 Klass* targetKlass = Klass::cast(required->is_klass() | |
| 1852 ? (klassOop)required | |
| 1853 : java_lang_Class::as_klassOop(required)); | |
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1854 message = generate_class_cast_message(objName, targetKlass->external_name()); |
| 710 | 1855 } else { |
| 1856 // %%% need to get the MethodType string, without messing around too much | |
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1857 const char* desc = NULL; |
| 710 | 1858 // Get a signature from the invoke instruction |
| 1859 const char* mhName = "method handle"; | |
| 1860 const char* targetType = "the required signature"; | |
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1861 int targetArity = -1, mhArity = -1; |
| 710 | 1862 vframeStream vfst(thread, true); |
| 1863 if (!vfst.at_end()) { | |
| 2142 | 1864 Bytecode_invoke call(vfst.method(), vfst.bci()); |
| 710 | 1865 methodHandle target; |
| 1866 { | |
| 1867 EXCEPTION_MARK; | |
| 2142 | 1868 target = call.static_target(THREAD); |
| 710 | 1869 if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; } |
| 1870 } | |
| 1871 if (target.not_null() | |
| 1872 && target->is_method_handle_invoke() | |
| 1873 && required == target->method_handle_type()) { | |
| 1874 targetType = target->signature()->as_C_string(); | |
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1875 targetArity = ArgumentCount(target->signature()).size(); |
| 710 | 1876 } |
| 1877 } | |
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1878 KlassHandle kignore; int dmf_flags = 0; |
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1879 methodHandle actual_method = MethodHandles::decode_method(actual, kignore, dmf_flags); |
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1880 if ((dmf_flags & ~(MethodHandles::_dmf_has_receiver | |
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1881 MethodHandles::_dmf_does_dispatch | |
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1882 MethodHandles::_dmf_from_interface)) != 0) |
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1883 actual_method = methodHandle(); // MH does extra binds, drops, etc. |
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1884 bool has_receiver = ((dmf_flags & MethodHandles::_dmf_has_receiver) != 0); |
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1885 if (actual_method.not_null()) { |
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1886 mhName = actual_method->signature()->as_C_string(); |
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1887 mhArity = ArgumentCount(actual_method->signature()).size(); |
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1888 if (!actual_method->is_static()) mhArity += 1; |
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1889 } else if (java_lang_invoke_MethodHandle::is_instance(actual)) { |
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1890 oopDesc* mhType = java_lang_invoke_MethodHandle::type(actual); |
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1891 mhArity = java_lang_invoke_MethodType::ptype_count(mhType); |
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1892 stringStream st; |
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1893 java_lang_invoke_MethodType::print_signature(mhType, &st); |
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1894 mhName = st.as_string(); |
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1895 } |
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1896 if (targetArity != -1 && targetArity != mhArity) { |
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1897 if (has_receiver && targetArity == mhArity-1) |
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1898 desc = " cannot be called without a receiver argument as "; |
| 710 | 1899 else |
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1900 desc = " cannot be called with a different arity as "; |
| 710 | 1901 } |
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1902 message = generate_class_cast_message(mhName, targetType, |
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1903 desc != NULL ? desc : |
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1904 " cannot be called as "); |
| 710 | 1905 } |
|
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1906 if (TraceMethodHandles) { |
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1907 tty->print_cr("WrongMethodType => message=%s", message); |
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1908 } |
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1909 return message; |
| 710 | 1910 } |
| 1911 | |
| 1912 oop SharedRuntime::wrong_method_type_is_for_single_argument(JavaThread* thr, | |
| 1913 oopDesc* required) { | |
| 1914 if (required == NULL) return NULL; | |
| 1142 | 1915 if (required->klass() == SystemDictionary::Class_klass()) |
| 710 | 1916 return required; |
| 1917 if (required->is_klass()) | |
| 1918 return Klass::cast(klassOop(required))->java_mirror(); | |
| 1919 return NULL; | |
| 1920 } | |
| 1921 | |
| 1922 | |
| 0 | 1923 char* SharedRuntime::generate_class_cast_message( |
| 710 | 1924 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1925 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1926 | |
| 53 | 1927 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1928 if (NULL == message) { |
| 53 | 1929 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1930 message = const_cast<char*>(objName); |
| 1931 } else { | |
| 1932 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1933 } | |
| 1934 return message; | |
| 1935 } | |
| 1936 | |
| 1937 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1938 (void) JavaThread::current()->reguard_stack(); | |
| 1939 JRT_END | |
| 1940 | |
| 1941 | |
| 1942 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1943 #ifndef PRODUCT | |
| 1944 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1945 #endif | |
| 1946 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1947 oop obj(_obj); | |
| 1948 #ifndef PRODUCT | |
| 1949 _monitor_enter_ctr++; // monitor enter slow | |
| 1950 #endif | |
| 1951 if (PrintBiasedLockingStatistics) { | |
| 1952 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1953 } | |
| 1954 Handle h_obj(THREAD, obj); | |
| 1955 if (UseBiasedLocking) { | |
| 1956 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1957 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1958 } else { | |
| 1959 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1960 } | |
| 1961 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1962 JRT_END | |
| 1963 | |
| 1964 #ifndef PRODUCT | |
| 1965 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1966 #endif | |
| 1967 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1968 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1969 oop obj(_obj); | |
| 1970 #ifndef PRODUCT | |
| 1971 _monitor_exit_ctr++; // monitor exit slow | |
| 1972 #endif | |
| 1973 Thread* THREAD = JavaThread::current(); | |
| 1974 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1975 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1976 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1977 #undef MIGHT_HAVE_PENDING | |
| 1978 #ifdef MIGHT_HAVE_PENDING | |
| 1979 // Save and restore any pending_exception around the exception mark. | |
| 1980 // While the slow_exit must not throw an exception, we could come into | |
| 1981 // this routine with one set. | |
| 1982 oop pending_excep = NULL; | |
| 1983 const char* pending_file; | |
| 1984 int pending_line; | |
| 1985 if (HAS_PENDING_EXCEPTION) { | |
| 1986 pending_excep = PENDING_EXCEPTION; | |
| 1987 pending_file = THREAD->exception_file(); | |
| 1988 pending_line = THREAD->exception_line(); | |
| 1989 CLEAR_PENDING_EXCEPTION; | |
| 1990 } | |
| 1991 #endif /* MIGHT_HAVE_PENDING */ | |
| 1992 | |
| 1993 { | |
| 1994 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1995 EXCEPTION_MARK; | |
| 1996 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1997 } | |
| 1998 | |
| 1999 #ifdef MIGHT_HAVE_PENDING | |
| 2000 if (pending_excep != NULL) { | |
| 2001 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 2002 } | |
| 2003 #endif /* MIGHT_HAVE_PENDING */ | |
| 2004 JRT_END | |
| 2005 | |
| 2006 #ifndef PRODUCT | |
| 2007 | |
| 2008 void SharedRuntime::print_statistics() { | |
| 2009 ttyLocker ttyl; | |
| 2010 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 2011 | |
| 2012 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 2013 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 2014 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 2015 | |
| 2016 SharedRuntime::print_ic_miss_histogram(); | |
| 2017 | |
| 2018 if (CountRemovableExceptions) { | |
| 2019 if (_nof_removable_exceptions > 0) { | |
| 2020 Unimplemented(); // this counter is not yet incremented | |
| 2021 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 2022 } | |
| 2023 } | |
| 2024 | |
| 2025 // Dump the JRT_ENTRY counters | |
| 2026 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 2027 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 2028 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 2029 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 2030 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 2031 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 2032 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 2033 | |
| 2034 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 2035 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 2036 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 2037 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 2038 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 2039 | |
| 2040 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 2041 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 2042 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 2043 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 2044 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 2045 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 2046 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 2047 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 2048 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 2049 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 2050 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 2051 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 2052 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 2053 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 2054 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 2055 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 2056 | |
|
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2057 AdapterHandlerLibrary::print_statistics(); |
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2058 |
| 0 | 2059 if (xtty != NULL) xtty->tail("statistics"); |
| 2060 } | |
| 2061 | |
| 2062 inline double percent(int x, int y) { | |
| 2063 return 100.0 * x / MAX2(y, 1); | |
| 2064 } | |
| 2065 | |
| 2066 class MethodArityHistogram { | |
| 2067 public: | |
| 2068 enum { MAX_ARITY = 256 }; | |
| 2069 private: | |
| 2070 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 2071 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 2072 static int _max_arity; // max. arity seen | |
| 2073 static int _max_size; // max. arg size seen | |
| 2074 | |
| 2075 static void add_method_to_histogram(nmethod* nm) { | |
| 2076 methodOop m = nm->method(); | |
| 2077 ArgumentCount args(m->signature()); | |
| 2078 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 2079 int argsize = m->size_of_parameters(); | |
| 2080 arity = MIN2(arity, MAX_ARITY-1); | |
| 2081 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 2082 int count = nm->method()->compiled_invocation_count(); | |
| 2083 _arity_histogram[arity] += count; | |
| 2084 _size_histogram[argsize] += count; | |
| 2085 _max_arity = MAX2(_max_arity, arity); | |
| 2086 _max_size = MAX2(_max_size, argsize); | |
| 2087 } | |
| 2088 | |
| 2089 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 2090 const int N = MIN2(5, n); | |
| 2091 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2092 double sum = 0; | |
| 2093 double weighted_sum = 0; | |
| 2094 int i; | |
| 2095 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 2096 double rest = sum; | |
| 2097 double percent = sum / 100; | |
| 2098 for (i = 0; i <= N; i++) { | |
| 2099 rest -= histo[i]; | |
| 2100 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 2101 } | |
| 2102 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 2103 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 2104 } | |
| 2105 | |
| 2106 void print_histogram() { | |
| 2107 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2108 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 2109 tty->print_cr("\nSame for parameter size (in words):"); | |
| 2110 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 2111 tty->cr(); | |
| 2112 } | |
| 2113 | |
| 2114 public: | |
| 2115 MethodArityHistogram() { | |
| 2116 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 2117 _max_arity = _max_size = 0; | |
| 2118 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 2119 CodeCache::nmethods_do(add_method_to_histogram); | |
| 2120 print_histogram(); | |
| 2121 } | |
| 2122 }; | |
| 2123 | |
| 2124 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2125 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2126 int MethodArityHistogram::_max_arity; | |
| 2127 int MethodArityHistogram::_max_size; | |
| 2128 | |
| 2129 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2130 tty->print_cr("Calls from compiled code:"); | |
| 2131 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2132 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2133 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2134 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2135 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2136 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2137 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2138 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2139 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2140 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2141 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2142 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2143 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2144 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2145 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2146 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2147 tty->cr(); | |
| 2148 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2149 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2150 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2151 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2152 tty->cr(); | |
| 2153 | |
| 2154 MethodArityHistogram h; | |
| 2155 } | |
| 2156 #endif | |
| 2157 | |
| 2158 | |
|
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2159 // A simple wrapper class around the calling convention information |
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2160 // that allows sharing of adapters for the same calling convention. |
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2161 class AdapterFingerPrint : public CHeapObj { |
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2162 private: |
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2163 union { |
|
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2164 int _compact[3]; |
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2165 int* _fingerprint; |
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2166 } _value; |
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2167 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2168 // Otherwise _value._fingerprint is the array. |
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2169 |
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2170 // Remap BasicTypes that are handled equivalently by the adapters. |
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2171 // These are correct for the current system but someday it might be |
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2172 // necessary to make this mapping platform dependent. |
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2173 static BasicType adapter_encoding(BasicType in) { |
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2174 assert((~0xf & in) == 0, "must fit in 4 bits"); |
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2175 switch(in) { |
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2176 case T_BOOLEAN: |
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2177 case T_BYTE: |
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2178 case T_SHORT: |
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2179 case T_CHAR: |
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2180 // There are all promoted to T_INT in the calling convention |
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2181 return T_INT; |
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2182 |
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2183 case T_OBJECT: |
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2184 case T_ARRAY: |
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2185 #ifdef _LP64 |
| 1506 | 2186 return T_LONG; |
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2187 #else |
| 1506 | 2188 return T_INT; |
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2189 #endif |
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2190 |
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2191 case T_INT: |
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2192 case T_LONG: |
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2193 case T_FLOAT: |
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2194 case T_DOUBLE: |
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2195 case T_VOID: |
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2196 return in; |
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2197 |
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2198 default: |
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2199 ShouldNotReachHere(); |
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2200 return T_CONFLICT; |
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2201 } |
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2202 } |
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2203 |
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2204 public: |
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2205 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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2206 // The fingerprint is based on the BasicType signature encoded |
|
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2207 // into an array of ints with eight entries per int. |
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2208 int* ptr; |
|
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2209 int len = (total_args_passed + 7) >> 3; |
|
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2210 if (len <= (int)(sizeof(_value._compact) / sizeof(int))) { |
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2211 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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2212 // Storing the signature encoded as signed chars hits about 98% |
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2213 // of the time. |
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2214 _length = -len; |
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2215 ptr = _value._compact; |
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2216 } else { |
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|
2217 _length = len; |
|
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|
2218 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length); |
|
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|
2219 ptr = _value._fingerprint; |
|
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|
2220 } |
|
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changeset
|
2221 |
|
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|
2222 // Now pack the BasicTypes with 8 per int |
|
1207
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|
2223 int sig_index = 0; |
|
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|
2224 for (int index = 0; index < len; index++) { |
|
74c848d437ab
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|
2225 int value = 0; |
|
3841
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diff
changeset
|
2226 for (int byte = 0; byte < 8; byte++) { |
|
1207
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|
2227 if (sig_index < total_args_passed) { |
|
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|
2228 value = (value << 4) | adapter_encoding(sig_bt[sig_index++]); |
|
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|
2229 } |
|
74c848d437ab
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|
2230 } |
|
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|
2231 ptr[index] = value; |
|
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|
2232 } |
|
1187
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|
2233 } |
|
cf0685d550f1
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diff
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|
2234 |
|
cf0685d550f1
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diff
changeset
|
2235 ~AdapterFingerPrint() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2236 if (_length > 0) { |
|
cf0685d550f1
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changeset
|
2237 FREE_C_HEAP_ARRAY(int, _value._fingerprint); |
|
cf0685d550f1
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diff
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|
2238 } |
|
cf0685d550f1
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diff
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|
2239 } |
|
cf0685d550f1
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diff
changeset
|
2240 |
|
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|
2241 int value(int index) { |
|
1187
cf0685d550f1
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|
2242 if (_length < 0) { |
|
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|
2243 return _value._compact[index]; |
|
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|
2244 } |
|
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|
2245 return _value._fingerprint[index]; |
|
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|
2246 } |
|
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diff
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|
2247 int length() { |
|
cf0685d550f1
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|
2248 if (_length < 0) return -_length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2249 return _length; |
|
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|
2250 } |
|
cf0685d550f1
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diff
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|
2251 |
|
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diff
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|
2252 bool is_compact() { |
|
cf0685d550f1
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diff
changeset
|
2253 return _length <= 0; |
|
cf0685d550f1
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never
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diff
changeset
|
2254 } |
|
cf0685d550f1
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diff
changeset
|
2255 |
|
cf0685d550f1
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diff
changeset
|
2256 unsigned int compute_hash() { |
|
1207
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|
2257 int hash = 0; |
|
1187
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changeset
|
2258 for (int i = 0; i < length(); i++) { |
|
1207
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|
2259 int v = value(i); |
|
1187
cf0685d550f1
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changeset
|
2260 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
cf0685d550f1
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diff
changeset
|
2261 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2262 return (unsigned int)hash; |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2263 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2264 |
|
cf0685d550f1
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parents:
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diff
changeset
|
2265 const char* as_string() { |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2266 stringStream st; |
|
3841
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changeset
|
2267 st.print("0x"); |
|
1187
cf0685d550f1
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changeset
|
2268 for (int i = 0; i < length(); i++) { |
|
3841
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changeset
|
2269 st.print("%08x", value(i)); |
|
1187
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diff
changeset
|
2270 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2271 return st.as_string(); |
|
cf0685d550f1
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diff
changeset
|
2272 } |
|
cf0685d550f1
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diff
changeset
|
2273 |
|
cf0685d550f1
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diff
changeset
|
2274 bool equals(AdapterFingerPrint* other) { |
|
cf0685d550f1
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changeset
|
2275 if (other->_length != _length) { |
|
cf0685d550f1
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parents:
1142
diff
changeset
|
2276 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2277 } |
|
cf0685d550f1
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changeset
|
2278 if (_length < 0) { |
|
1207
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|
2279 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
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changeset
|
2280 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
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changeset
|
2281 _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
|
2282 } else { |
|
cf0685d550f1
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parents:
1142
diff
changeset
|
2283 for (int i = 0; i < _length; i++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2284 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
|
2285 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2286 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2287 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2288 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2289 return true; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2290 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2291 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2292 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2293 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2294 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2295 class AdapterHandlerTable : public BasicHashtable { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2296 friend class AdapterHandlerTableIterator; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2297 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2298 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2299 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2300 #ifndef PRODUCT |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2301 static int _lookups; // number of calls to lookup |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2302 static int _buckets; // number of buckets checked |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2303 static int _equals; // number of buckets checked with matching hash |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2304 static int _hits; // number of successful lookups |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2305 static int _compact; // number of equals calls with compact signature |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2306 #endif |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2307 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2308 AdapterHandlerEntry* bucket(int i) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2309 return (AdapterHandlerEntry*)BasicHashtable::bucket(i); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2310 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2311 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2312 public: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2313 AdapterHandlerTable() |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2314 : BasicHashtable(293, sizeof(AdapterHandlerEntry)) { } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2315 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2316 // Create a new entry suitable for insertion in the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2317 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2318 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable::new_entry(fingerprint->compute_hash()); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2319 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2320 return entry; |
|
cf0685d550f1
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never
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diff
changeset
|
2321 } |
|
cf0685d550f1
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diff
changeset
|
2322 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2323 // Insert an entry into the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2324 void add(AdapterHandlerEntry* entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2325 int index = hash_to_index(entry->hash()); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2326 add_entry(index, entry); |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2327 } |
|
cf0685d550f1
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diff
changeset
|
2328 |
|
1207
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changeset
|
2329 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
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diff
changeset
|
2330 entry->deallocate(); |
|
74c848d437ab
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changeset
|
2331 BasicHashtable::free_entry(entry); |
|
74c848d437ab
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changeset
|
2332 } |
|
74c848d437ab
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diff
changeset
|
2333 |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2334 // Find a entry with the same fingerprint if it exists |
|
1207
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diff
changeset
|
2335 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
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|
2336 NOT_PRODUCT(_lookups++); |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2337 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2338 unsigned int hash = fp.compute_hash(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2339 int index = hash_to_index(hash); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2340 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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diff
changeset
|
2341 NOT_PRODUCT(_buckets++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2342 if (e->hash() == hash) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2343 NOT_PRODUCT(_equals++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2344 if (fp.equals(e->fingerprint())) { |
|
1263
e7b1cc79bd25
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1257
diff
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|
2345 #ifndef PRODUCT |
|
1187
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|
2346 if (fp.is_compact()) _compact++; |
|
cf0685d550f1
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diff
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|
2347 _hits++; |
|
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never
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diff
changeset
|
2348 #endif |
|
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diff
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|
2349 return e; |
|
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never
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diff
changeset
|
2350 } |
|
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never
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1142
diff
changeset
|
2351 } |
|
cf0685d550f1
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never
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diff
changeset
|
2352 } |
|
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diff
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|
2353 return NULL; |
|
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never
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diff
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|
2354 } |
|
cf0685d550f1
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diff
changeset
|
2355 |
|
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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changeset
|
2356 #ifndef PRODUCT |
|
1187
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|
2357 void print_statistics() { |
|
cf0685d550f1
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diff
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|
2358 ResourceMark rm; |
|
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|
2359 int longest = 0; |
|
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|
2360 int empty = 0; |
|
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diff
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|
2361 int total = 0; |
|
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|
2362 int nonempty = 0; |
|
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changeset
|
2363 for (int index = 0; index < table_size(); index++) { |
|
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|
2364 int count = 0; |
|
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|
2365 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
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|
2366 count++; |
|
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|
2367 } |
|
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|
2368 if (count != 0) nonempty++; |
|
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|
2369 if (count == 0) empty++; |
|
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|
2370 if (count > longest) longest = count; |
|
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|
2371 total += count; |
|
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never
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|
2372 } |
|
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|
2373 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2374 empty, longest, total, total / (double)nonempty); |
|
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|
2375 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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|
2376 _lookups, _buckets, _equals, _hits, _compact); |
|
1263
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|
2377 } |
|
1187
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|
2378 #endif |
|
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|
2379 }; |
|
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|
2380 |
|
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diff
changeset
|
2381 |
|
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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changeset
|
2382 #ifndef PRODUCT |
|
1187
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|
2383 |
|
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|
2384 int AdapterHandlerTable::_lookups; |
|
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|
2385 int AdapterHandlerTable::_buckets; |
|
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|
2386 int AdapterHandlerTable::_equals; |
|
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|
2387 int AdapterHandlerTable::_hits; |
|
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|
2388 int AdapterHandlerTable::_compact; |
|
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|
2389 |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
|
2390 #endif |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2391 |
|
1187
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|
2392 class AdapterHandlerTableIterator : public StackObj { |
|
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|
2393 private: |
|
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|
2394 AdapterHandlerTable* _table; |
|
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|
2395 int _index; |
|
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|
2396 AdapterHandlerEntry* _current; |
|
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|
2397 |
|
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|
2398 void scan() { |
|
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|
2399 while (_index < _table->table_size()) { |
|
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|
2400 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2401 _index++; |
|
1187
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|
2402 if (a != NULL) { |
|
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|
2403 _current = a; |
|
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never
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|
2404 return; |
|
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never
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|
2405 } |
|
cf0685d550f1
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never
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|
2406 } |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2407 } |
|
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never
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changeset
|
2408 |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2409 public: |
|
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never
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changeset
|
2410 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
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|
2411 scan(); |
|
cf0685d550f1
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never
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|
2412 } |
|
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never
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|
2413 bool has_next() { |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2414 return _current != NULL; |
|
cf0685d550f1
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never
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diff
changeset
|
2415 } |
|
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changeset
|
2416 AdapterHandlerEntry* next() { |
|
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never
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|
2417 if (_current != NULL) { |
|
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|
2418 AdapterHandlerEntry* result = _current; |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2419 _current = _current->next(); |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2420 if (_current == NULL) scan(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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|
2421 return result; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2422 } else { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2423 return NULL; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2424 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2425 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2426 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2427 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2428 |
| 0 | 2429 // --------------------------------------------------------------------------- |
| 2430 // Implementation of AdapterHandlerLibrary | |
|
1187
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|
2431 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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|
2432 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2433 const int AdapterHandlerLibrary_size = 16*K; |
|
742
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|
2434 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2435 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2436 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2437 // Should be called only when AdapterHandlerLibrary_lock is active. |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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710
diff
changeset
|
2438 if (_buffer == NULL) // Initialize lazily |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2439 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2440 return _buffer; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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710
diff
changeset
|
2441 } |
| 0 | 2442 |
| 2443 void AdapterHandlerLibrary::initialize() { | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2444 if (_adapters != NULL) return; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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|
2445 _adapters = new AdapterHandlerTable(); |
| 0 | 2446 |
| 2447 // Create a special handler for abstract methods. Abstract methods | |
| 2448 // are never compiled so an i2c entry is somewhat meaningless, but | |
| 2449 // fill it in with something appropriate just in case. Pass handle | |
| 2450 // wrong method for the c2i transitions. | |
| 2451 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2452 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2453 StubRoutines::throw_AbstractMethodError_entry(), |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2454 wrong_method, wrong_method); |
| 0 | 2455 } |
| 2456 | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2457 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2458 address i2c_entry, |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2459 address c2i_entry, |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2460 address c2i_unverified_entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2461 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2462 } |
|
cf0685d550f1
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diff
changeset
|
2463 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2464 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2465 // Use customized signature handler. Need to lock around updates to |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2466 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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|
2467 // and a single writer: this could be fixed if it becomes a |
|
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never
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|
2468 // problem). |
| 0 | 2469 |
| 2470 // Get the address of the ic_miss handlers before we grab the | |
| 2471 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2472 // was caused by the initialization of the stubs happening | |
| 2473 // while we held the lock and then notifying jvmti while | |
| 2474 // holding it. This just forces the initialization to be a little | |
| 2475 // earlier. | |
| 2476 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2477 assert(ic_miss != NULL, "must have handler"); | |
| 2478 | |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2479 ResourceMark rm; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2480 |
| 1748 | 2481 NOT_PRODUCT(int insts_size); |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1295
diff
changeset
|
2482 AdapterBlob* B = NULL; |
|
742
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diff
changeset
|
2483 AdapterHandlerEntry* entry = NULL; |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
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|
2484 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2485 { |
| 2486 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2487 // make sure data structure is initialized | |
| 2488 initialize(); | |
| 2489 | |
| 2490 if (method->is_abstract()) { | |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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|
2491 return _abstract_method_handler; |
| 0 | 2492 } |
| 2493 | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2494 // Fill in the signature array, for the calling-convention call. |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2495 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2496 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2497 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
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2498 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
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|
2499 int i = 0; |
|
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|
2500 if (!method->is_static()) // Pass in receiver first |
|
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|
2501 sig_bt[i++] = T_OBJECT; |
|
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|
2502 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
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|
2503 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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|
2504 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
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|
2505 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2506 } |
|
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|
2507 assert(i == total_args_passed, ""); |
|
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|
2508 |
|
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|
2509 // Lookup method signature's fingerprint |
|
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|
2510 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
1187
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|
2511 |
|
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|
2512 #ifdef ASSERT |
|
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|
2513 AdapterHandlerEntry* shared_entry = NULL; |
|
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|
2514 if (VerifyAdapterSharing && entry != NULL) { |
|
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|
2515 shared_entry = entry; |
|
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|
2516 entry = NULL; |
|
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|
2517 } |
|
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|
2518 #endif |
|
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|
2519 |
|
1187
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|
2520 if (entry != NULL) { |
|
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|
2521 return entry; |
| 0 | 2522 } |
| 2523 | |
|
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|
2524 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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|
2525 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
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|
2526 |
|
1187
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|
2527 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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|
2528 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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|
2529 |
| 0 | 2530 // Create I2C & C2I handlers |
| 2531 | |
|
1299
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2532 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2533 if (buf != NULL) { |
| 1748 | 2534 CodeBuffer buffer(buf); |
|
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|
2535 short buffer_locs[20]; |
|
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|
2536 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
|
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|
2537 sizeof(buffer_locs)/sizeof(relocInfo)); |
|
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|
2538 MacroAssembler _masm(&buffer); |
|
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|
2539 |
|
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|
2540 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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|
2541 total_args_passed, |
|
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|
2542 comp_args_on_stack, |
|
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|
2543 sig_bt, |
|
1187
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|
2544 regs, |
|
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|
2545 fingerprint); |
| 0 | 2546 |
|
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|
2547 #ifdef ASSERT |
|
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|
2548 if (VerifyAdapterSharing) { |
|
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|
2549 if (shared_entry != NULL) { |
| 1748 | 2550 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
|
1207
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|
2551 "code must match"); |
|
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|
2552 // Release the one just created and return the original |
|
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|
2553 _adapters->free_entry(entry); |
|
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|
2554 return shared_entry; |
|
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|
2555 } else { |
| 1748 | 2556 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
|
1207
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|
2557 } |
|
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|
2558 } |
|
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|
2559 #endif |
|
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|
2560 |
|
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|
2561 B = AdapterBlob::create(&buffer); |
| 1748 | 2562 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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|
2563 } |
| 28 | 2564 if (B == NULL) { |
| 2565 // CodeCache is full, disable compilation | |
| 2566 // Ought to log this but compile log is only per compile thread | |
| 2567 // and we're some non descript Java thread. | |
| 1202 | 2568 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2569 CompileBroker::handle_full_code_cache(); | |
|
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|
2570 return NULL; // Out of CodeCache space |
| 28 | 2571 } |
| 1748 | 2572 entry->relocate(B->content_begin()); |
| 0 | 2573 #ifndef PRODUCT |
| 2574 // debugging suppport | |
| 2575 if (PrintAdapterHandlers) { | |
| 2576 tty->cr(); | |
|
1187
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|
2577 tty->print_cr("i2c argument handler #%d for: %s %s (fingerprint = %s, %d bytes generated)", |
|
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|
2578 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
| 1748 | 2579 method->signature()->as_C_string(), fingerprint->as_string(), insts_size ); |
| 0 | 2580 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
| 1748 | 2581 Disassembler::decode(entry->get_i2c_entry(), entry->get_i2c_entry() + insts_size); |
| 0 | 2582 } |
| 2583 #endif | |
| 2584 | |
|
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|
2585 _adapters->add(entry); |
| 0 | 2586 } |
| 2587 // Outside of the lock | |
| 2588 if (B != NULL) { | |
| 2589 char blob_id[256]; | |
| 2590 jio_snprintf(blob_id, | |
| 2591 sizeof(blob_id), | |
|
1187
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|
2592 "%s(%s)@" PTR_FORMAT, |
|
1299
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diff
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|
2593 B->name(), |
|
1187
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|
2594 fingerprint->as_string(), |
| 1748 | 2595 B->content_begin()); |
| 2596 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
| 0 | 2597 |
| 2598 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 1748 | 2599 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
| 0 | 2600 } |
| 2601 } | |
|
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|
2602 return entry; |
| 0 | 2603 } |
| 2604 | |
| 2605 void AdapterHandlerEntry::relocate(address new_base) { | |
| 2606 ptrdiff_t delta = new_base - _i2c_entry; | |
| 2607 _i2c_entry += delta; | |
| 2608 _c2i_entry += delta; | |
| 2609 _c2i_unverified_entry += delta; | |
| 2610 } | |
| 2611 | |
|
1207
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|
2612 |
|
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|
2613 void AdapterHandlerEntry::deallocate() { |
|
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|
2614 delete _fingerprint; |
|
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|
2615 #ifdef ASSERT |
|
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|
2616 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code); |
|
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|
2617 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig); |
|
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|
2618 #endif |
|
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|
2619 } |
|
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|
2620 |
|
74c848d437ab
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|
2621 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2622 #ifdef ASSERT |
|
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|
2623 // Capture the code before relocation so that it can be compared |
|
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|
2624 // against other versions. If the code is captured after relocation |
|
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|
2625 // then relative instructions won't be equivalent. |
|
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|
2626 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
74c848d437ab
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|
2627 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length); |
|
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|
2628 _code_length = length; |
|
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changeset
|
2629 memcpy(_saved_code, buffer, length); |
|
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|
2630 _total_args_passed = total_args_passed; |
|
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|
2631 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed); |
|
74c848d437ab
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|
2632 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
|
74c848d437ab
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|
2633 } |
|
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|
2634 |
|
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|
2635 |
|
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|
2636 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
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|
2637 if (length != _code_length) { |
|
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|
2638 return false; |
|
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|
2639 } |
|
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|
2640 for (int i = 0; i < length; i++) { |
|
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|
2641 if (buffer[i] != _saved_code[i]) { |
|
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|
2642 return false; |
|
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|
2643 } |
|
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|
2644 } |
|
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|
2645 return true; |
|
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|
2646 } |
|
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|
2647 #endif |
|
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|
2648 |
|
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|
2649 |
| 0 | 2650 // Create a native wrapper for this native method. The wrapper converts the |
| 2651 // java compiled calling convention to the native convention, handlizes | |
| 2652 // arguments, and transitions to native. On return from the native we transition | |
| 2653 // back to java blocking if a safepoint is in progress. | |
|
2405
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|
2654 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
| 0 | 2655 ResourceMark rm; |
| 2656 nmethod* nm = NULL; | |
| 2657 | |
| 2658 assert(method->has_native_function(), "must have something valid to call!"); | |
| 2659 | |
| 2660 { | |
| 2661 // perform the work while holding the lock, but perform any printing outside the lock | |
| 2662 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2663 // See if somebody beat us to it | |
| 2664 nm = method->code(); | |
| 2665 if (nm) { | |
| 2666 return nm; | |
| 2667 } | |
| 2668 | |
|
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|
2669 ResourceMark rm; |
| 0 | 2670 |
|
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|
2671 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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|
2672 if (buf != NULL) { |
| 1748 | 2673 CodeBuffer buffer(buf); |
|
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|
2674 double locs_buf[20]; |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2675 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
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|
2676 MacroAssembler _masm(&buffer); |
|
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diff
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|
2677 |
|
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diff
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|
2678 // Fill in the signature array, for the calling-convention call. |
|
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|
2679 int total_args_passed = method->size_of_parameters(); |
| 0 | 2680 |
|
742
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|
2681 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed); |
|
45463a04ca27
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|
2682 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair,total_args_passed); |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2683 int i=0; |
|
45463a04ca27
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diff
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|
2684 if( !method->is_static() ) // Pass in receiver first |
|
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diff
changeset
|
2685 sig_bt[i++] = T_OBJECT; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2686 SignatureStream ss(method->signature()); |
|
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diff
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|
2687 for( ; !ss.at_return_type(); ss.next()) { |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2688 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
45463a04ca27
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diff
changeset
|
2689 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
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diff
changeset
|
2690 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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diff
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|
2691 } |
|
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|
2692 assert( i==total_args_passed, "" ); |
|
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diff
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|
2693 BasicType ret_type = ss.type(); |
|
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diff
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|
2694 |
|
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|
2695 // Now get the compiled-Java layout as input arguments |
|
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diff
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|
2696 int comp_args_on_stack; |
|
45463a04ca27
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kvn
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diff
changeset
|
2697 comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
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|
2698 |
|
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|
2699 // Generate the compiled-to-native wrapper code |
|
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diff
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|
2700 nm = SharedRuntime::generate_native_wrapper(&_masm, |
|
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diff
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|
2701 method, |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
diff
changeset
|
2702 compile_id, |
|
742
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diff
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|
2703 total_args_passed, |
|
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diff
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|
2704 comp_args_on_stack, |
|
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changeset
|
2705 sig_bt,regs, |
|
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|
2706 ret_type); |
| 0 | 2707 } |
| 2708 } | |
| 2709 | |
| 2710 // Must unlock before calling set_code | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
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parents:
1681
diff
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|
2711 |
| 0 | 2712 // Install the generated code. |
| 2713 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2714 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
changeset
|
2715 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
diff
changeset
|
2716 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
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|
2717 } |
| 0 | 2718 method->set_code(method, nm); |
| 2719 nm->post_compiled_method_load_event(); | |
| 2720 } else { | |
| 2721 // CodeCache is full, disable compilation | |
| 1202 | 2722 CompileBroker::handle_full_code_cache(); |
| 0 | 2723 } |
| 2724 return nm; | |
| 2725 } | |
| 2726 | |
|
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2727 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
|
0382d2b469b2
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parents:
4872
diff
changeset
|
2728 assert(thread == JavaThread::current(), "must be"); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2729 // The code is about to enter a JNI lazy critical native method and |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2730 // _needs_gc is true, so if this thread is already in a critical |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2731 // section then just return, otherwise this thread should block |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2732 // until needs_gc has been cleared. |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2733 if (thread->in_critical()) { |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2734 return; |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2735 } |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2736 // Lock and unlock a critical section to give the system a chance to block |
|
0382d2b469b2
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diff
changeset
|
2737 GC_locker::lock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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diff
changeset
|
2738 GC_locker::unlock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2739 JRT_END |
|
0382d2b469b2
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diff
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|
2740 |
|
116
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diff
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|
2741 #ifdef HAVE_DTRACE_H |
|
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diff
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|
2742 // Create a dtrace nmethod for this method. The wrapper converts the |
|
018d5b58dd4f
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62
diff
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|
2743 // java compiled calling convention to the native convention, makes a dummy call |
|
018d5b58dd4f
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62
diff
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|
2744 // (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
kamg
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diff
changeset
|
2745 // probe is enabled). The returns to the caller. Since this all looks like a |
|
018d5b58dd4f
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diff
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|
2746 // leaf no thread transition is needed. |
|
018d5b58dd4f
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62
diff
changeset
|
2747 |
|
018d5b58dd4f
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diff
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|
2748 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
018d5b58dd4f
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diff
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|
2749 ResourceMark rm; |
|
018d5b58dd4f
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diff
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|
2750 nmethod* nm = NULL; |
|
018d5b58dd4f
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diff
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|
2751 |
|
018d5b58dd4f
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diff
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|
2752 if (PrintCompilation) { |
|
018d5b58dd4f
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diff
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|
2753 ttyLocker ttyl; |
|
018d5b58dd4f
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diff
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|
2754 tty->print("--- n%s "); |
|
018d5b58dd4f
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diff
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|
2755 method->print_short_name(tty); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2756 if (method->is_static()) { |
|
018d5b58dd4f
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diff
changeset
|
2757 tty->print(" (static)"); |
|
018d5b58dd4f
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62
diff
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|
2758 } |
|
018d5b58dd4f
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diff
changeset
|
2759 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2760 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2761 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2762 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2763 // perform the work while holding the lock, but perform any printing |
|
018d5b58dd4f
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diff
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|
2764 // outside the lock |
|
018d5b58dd4f
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kamg
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diff
changeset
|
2765 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
018d5b58dd4f
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62
diff
changeset
|
2766 // See if somebody beat us to it |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2767 nm = method->code(); |
|
018d5b58dd4f
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diff
changeset
|
2768 if (nm) { |
|
018d5b58dd4f
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diff
changeset
|
2769 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2770 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2771 |
|
742
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diff
changeset
|
2772 ResourceMark rm; |
|
45463a04ca27
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diff
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|
2773 |
|
45463a04ca27
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710
diff
changeset
|
2774 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
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710
diff
changeset
|
2775 if (buf != NULL) { |
| 1748 | 2776 CodeBuffer buffer(buf); |
|
742
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kvn
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diff
changeset
|
2777 // Need a few relocation entries |
|
45463a04ca27
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diff
changeset
|
2778 double locs_buf[20]; |
|
45463a04ca27
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kvn
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diff
changeset
|
2779 buffer.insts()->initialize_shared_locs( |
|
116
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diff
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|
2780 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
742
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|
2781 MacroAssembler _masm(&buffer); |
|
116
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diff
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|
2782 |
|
742
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changeset
|
2783 // Generate the compiled-to-native wrapper code |
|
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diff
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|
2784 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
|
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|
2785 } |
|
116
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diff
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|
2786 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2787 return nm; |
|
018d5b58dd4f
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kamg
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62
diff
changeset
|
2788 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2789 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2790 // the dtrace method needs to convert java lang string to utf8 string. |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2791 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
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|
2792 typeArrayOop jlsValue = java_lang_String::value(src); |
|
018d5b58dd4f
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kamg
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62
diff
changeset
|
2793 int jlsOffset = java_lang_String::offset(src); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2794 int jlsLen = java_lang_String::length(src); |
|
018d5b58dd4f
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62
diff
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|
2795 jchar* jlsPos = (jlsLen == 0) ? NULL : |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2796 jlsValue->char_at_addr(jlsOffset); |
|
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2797 assert(typeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
116
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diff
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|
2798 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2799 } |
|
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diff
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|
2800 #endif // ndef HAVE_DTRACE_H |
|
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|
2801 |
| 0 | 2802 // ------------------------------------------------------------------------- |
| 2803 // Java-Java calling convention | |
| 2804 // (what you use when Java calls Java) | |
| 2805 | |
| 2806 //------------------------------name_for_receiver---------------------------------- | |
| 2807 // For a given signature, return the VMReg for parameter 0. | |
| 2808 VMReg SharedRuntime::name_for_receiver() { | |
| 2809 VMRegPair regs; | |
| 2810 BasicType sig_bt = T_OBJECT; | |
| 2811 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2812 // Return argument 0 register. In the LP64 build pointers | |
| 2813 // take 2 registers, but the VM wants only the 'main' name. | |
| 2814 return regs.first(); | |
| 2815 } | |
| 2816 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2142
diff
changeset
|
2817 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
| 0 | 2818 // This method is returning a data structure allocating as a |
| 2819 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2820 char *s = sig->as_C_string(); | |
| 2821 int len = (int)strlen(s); | |
|
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|
2822 *s++; len--; // Skip opening paren |
| 0 | 2823 char *t = s+len; |
| 2824 while( *(--t) != ')' ) ; // Find close paren | |
| 2825 | |
| 2826 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2827 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2828 int cnt = 0; | |
|
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|
2829 if (has_receiver) { |
| 0 | 2830 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2831 } | |
| 2832 | |
| 2833 while( s < t ) { | |
| 2834 switch( *s++ ) { // Switch on signature character | |
| 2835 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2836 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2837 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2838 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2839 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2840 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2841 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2842 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2843 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2844 case 'L': // Oop | |
| 2845 while( *s++ != ';' ) ; // Skip signature | |
| 2846 sig_bt[cnt++] = T_OBJECT; | |
| 2847 break; | |
| 2848 case '[': { // Array | |
| 2849 do { // Skip optional size | |
| 2850 while( *s >= '0' && *s <= '9' ) s++; | |
| 2851 } while( *s++ == '[' ); // Nested arrays? | |
| 2852 // Skip element type | |
| 2853 if( s[-1] == 'L' ) | |
| 2854 while( *s++ != ';' ) ; // Skip signature | |
| 2855 sig_bt[cnt++] = T_ARRAY; | |
| 2856 break; | |
| 2857 } | |
| 2858 default : ShouldNotReachHere(); | |
| 2859 } | |
| 2860 } | |
| 2861 assert( cnt < 256, "grow table size" ); | |
| 2862 | |
| 2863 int comp_args_on_stack; | |
| 2864 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2865 | |
| 2866 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2867 // we must add that in to get "true" stack offsets. | |
| 2868 | |
| 2869 if (comp_args_on_stack) { | |
| 2870 for (int i = 0; i < cnt; i++) { | |
| 2871 VMReg reg1 = regs[i].first(); | |
| 2872 if( reg1->is_stack()) { | |
| 2873 // Yuck | |
| 2874 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2875 } | |
| 2876 VMReg reg2 = regs[i].second(); | |
| 2877 if( reg2->is_stack()) { | |
| 2878 // Yuck | |
| 2879 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2880 } | |
| 2881 regs[i].set_pair(reg2, reg1); | |
| 2882 } | |
| 2883 } | |
| 2884 | |
| 2885 // results | |
| 2886 *arg_size = cnt; | |
| 2887 return regs; | |
| 2888 } | |
| 2889 | |
| 2890 // OSR Migration Code | |
| 2891 // | |
| 2892 // This code is used convert interpreter frames into compiled frames. It is | |
| 2893 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2894 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2895 // active locks are inflated to allow them to move. The displaced headers and | |
| 2896 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2897 // back to the compiled code. The compiled code then pops the current | |
| 2898 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2899 // copies the interpreter locals and displaced headers where it wants. | |
| 2900 // Finally it calls back to free the temp buffer. | |
| 2901 // | |
| 2902 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2903 | |
| 2904 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2905 | |
| 2906 #ifdef IA64 | |
| 2907 ShouldNotReachHere(); // NYI | |
| 2908 #endif /* IA64 */ | |
| 2909 | |
| 2910 // | |
| 2911 // This code is dependent on the memory layout of the interpreter local | |
| 2912 // array and the monitors. On all of our platforms the layout is identical | |
| 2913 // so this code is shared. If some platform lays the their arrays out | |
| 2914 // differently then this code could move to platform specific code or | |
| 2915 // the code here could be modified to copy items one at a time using | |
| 2916 // frame accessor methods and be platform independent. | |
| 2917 | |
| 2918 frame fr = thread->last_frame(); | |
| 2919 assert( fr.is_interpreted_frame(), "" ); | |
| 2920 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2921 | |
| 2922 // Figure out how many monitors are active. | |
| 2923 int active_monitor_count = 0; | |
| 2924 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2925 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2926 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2927 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2928 } | |
| 2929 | |
| 2930 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2931 // could double check it. | |
| 2932 | |
| 2933 methodOop moop = fr.interpreter_frame_method(); | |
| 2934 int max_locals = moop->max_locals(); | |
| 2935 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2936 int buf_size_words = max_locals + active_monitor_count*2; | |
| 2937 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words); | |
| 2938 | |
| 2939 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2940 // Since there's no GC I can copy the oops blindly. | |
| 2941 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2942 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2943 (HeapWord*)&buf[0], |
| 2944 max_locals); | |
| 2945 | |
| 2946 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2947 int i = max_locals; | |
| 2948 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2949 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2950 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2951 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2952 BasicLock *lock = kptr2->lock(); | |
| 2953 // Inflate so the displaced header becomes position-independent | |
| 2954 if (lock->displaced_header()->is_unlocked()) | |
| 2955 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2956 // Now the displaced header is free to move | |
| 2957 buf[i++] = (intptr_t)lock->displaced_header(); | |
| 2958 buf[i++] = (intptr_t)kptr2->obj(); | |
| 2959 } | |
| 2960 } | |
| 2961 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2962 | |
| 2963 return buf; | |
| 2964 JRT_END | |
| 2965 | |
| 2966 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 2967 FREE_C_HEAP_ARRAY(intptr_t,buf); | |
| 2968 JRT_END | |
| 2969 | |
| 2970 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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2971 AdapterHandlerTableIterator iter(_adapters); |
|
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2972 while (iter.has_next()) { |
|
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|
2973 AdapterHandlerEntry* a = iter.next(); |
|
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|
2974 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 2975 } |
| 2976 return false; | |
| 2977 } | |
| 2978 | |
|
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|
2979 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
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2980 AdapterHandlerTableIterator iter(_adapters); |
|
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|
2981 while (iter.has_next()) { |
|
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2982 AdapterHandlerEntry* a = iter.next(); |
|
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2983 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) { |
|
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parents:
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|
2984 st->print("Adapter for signature: "); |
|
126ea7725993
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diff
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|
2985 st->print_cr("%s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
|
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|
2986 a->fingerprint()->as_string(), |
|
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|
2987 a->get_i2c_entry(), a->get_c2i_entry(), a->get_c2i_unverified_entry()); |
|
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parents:
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|
2988 |
| 0 | 2989 return; |
| 2990 } | |
| 2991 } | |
| 2992 assert(false, "Should have found handler"); | |
| 2993 } | |
|
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2994 |
|
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|
2995 #ifndef PRODUCT |
|
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|
2996 |
|
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2997 void AdapterHandlerLibrary::print_statistics() { |
|
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|
2998 _adapters->print_statistics(); |
|
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|
2999 } |
|
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|
3000 |
| 0 | 3001 #endif /* PRODUCT */ |