Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 18041:52b4284cb496
Merge with jdk8u20-b26
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 16:02:50 +0200 |
| parents | 4703a9442f3f 0bf37f737702 |
| children | 810222d74f7c |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2014, 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" | |
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34 #include "compiler/disassembler.hpp" |
| 1972 | 35 #include "interpreter/interpreter.hpp" |
| 36 #include "interpreter/interpreterRuntime.hpp" | |
| 37 #include "memory/gcLocker.inline.hpp" | |
| 38 #include "memory/universe.inline.hpp" | |
| 39 #include "oops/oop.inline.hpp" | |
| 40 #include "prims/forte.hpp" | |
| 41 #include "prims/jvmtiExport.hpp" | |
| 42 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
| 43 #include "prims/methodHandles.hpp" | |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "runtime/arguments.hpp" | |
| 46 #include "runtime/biasedLocking.hpp" | |
| 47 #include "runtime/handles.inline.hpp" | |
| 48 #include "runtime/init.hpp" | |
| 49 #include "runtime/interfaceSupport.hpp" | |
| 50 #include "runtime/javaCalls.hpp" | |
| 51 #include "runtime/sharedRuntime.hpp" | |
| 52 #include "runtime/stubRoutines.hpp" | |
| 53 #include "runtime/vframe.hpp" | |
| 54 #include "runtime/vframeArray.hpp" | |
| 55 #include "utilities/copy.hpp" | |
| 56 #include "utilities/dtrace.hpp" | |
| 57 #include "utilities/events.hpp" | |
| 58 #include "utilities/hashtable.inline.hpp" | |
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59 #include "utilities/macros.hpp" |
| 1972 | 60 #include "utilities/xmlstream.hpp" |
| 61 #ifdef TARGET_ARCH_x86 | |
| 62 # include "nativeInst_x86.hpp" | |
| 63 # include "vmreg_x86.inline.hpp" | |
| 64 #endif | |
| 65 #ifdef TARGET_ARCH_sparc | |
| 66 # include "nativeInst_sparc.hpp" | |
| 67 # include "vmreg_sparc.inline.hpp" | |
| 68 #endif | |
| 69 #ifdef TARGET_ARCH_zero | |
| 70 # include "nativeInst_zero.hpp" | |
| 71 # include "vmreg_zero.inline.hpp" | |
| 72 #endif | |
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73 #ifdef TARGET_ARCH_arm |
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74 # include "nativeInst_arm.hpp" |
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75 # include "vmreg_arm.inline.hpp" |
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76 #endif |
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77 #ifdef TARGET_ARCH_ppc |
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78 # include "nativeInst_ppc.hpp" |
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79 # include "vmreg_ppc.inline.hpp" |
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80 #endif |
| 1972 | 81 #ifdef COMPILER1 |
| 82 #include "c1/c1_Runtime1.hpp" | |
| 83 #endif | |
| 84 | |
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85 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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86 |
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87 // Shared stub locations |
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88 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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89 RuntimeStub* SharedRuntime::_wrong_method_abstract_blob; |
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90 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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91 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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92 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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93 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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94 |
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95 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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96 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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97 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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98 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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99 |
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100 #ifdef COMPILER2 |
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101 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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102 #endif // COMPILER2 |
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103 |
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104 |
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105 //----------------------------generate_stubs----------------------------------- |
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106 void SharedRuntime::generate_stubs() { |
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107 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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108 _wrong_method_abstract_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_abstract), "wrong_method_abstract_stub"); |
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109 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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110 _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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111 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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112 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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113 |
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114 #ifdef COMPILER2 |
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115 // Vectors are generated only by C2. |
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116 if (is_wide_vector(MaxVectorSize)) { |
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117 _polling_page_vectors_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_VECTOR_LOOP); |
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118 } |
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119 #endif // COMPILER2 |
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120 _polling_page_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_LOOP); |
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121 _polling_page_return_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_RETURN); |
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122 |
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123 generate_deopt_blob(); |
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124 |
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125 #ifdef COMPILER2 |
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126 generate_uncommon_trap_blob(); |
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127 #endif // COMPILER2 |
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128 } |
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129 |
| 0 | 130 #include <math.h> |
| 131 | |
| 4006 | 132 #ifndef USDT2 |
| 0 | 133 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
| 134 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 135 char*, int, char*, int, char*, int); | |
| 136 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 137 char*, int, char*, int, char*, int); | |
| 4006 | 138 #endif /* !USDT2 */ |
| 0 | 139 |
| 140 // Implementation of SharedRuntime | |
| 141 | |
| 142 #ifndef PRODUCT | |
| 143 // For statistics | |
| 144 int SharedRuntime::_ic_miss_ctr = 0; | |
| 145 int SharedRuntime::_wrong_method_ctr = 0; | |
| 146 int SharedRuntime::_resolve_static_ctr = 0; | |
| 147 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 148 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 149 int SharedRuntime::_implicit_null_throws = 0; | |
| 150 int SharedRuntime::_implicit_div0_throws = 0; | |
| 151 int SharedRuntime::_throw_null_ctr = 0; | |
| 152 | |
| 153 int SharedRuntime::_nof_normal_calls = 0; | |
| 154 int SharedRuntime::_nof_optimized_calls = 0; | |
| 155 int SharedRuntime::_nof_inlined_calls = 0; | |
| 156 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 157 int SharedRuntime::_nof_static_calls = 0; | |
| 158 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 159 int SharedRuntime::_nof_interface_calls = 0; | |
| 160 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 161 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 162 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 163 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 164 | |
| 165 int SharedRuntime::_new_instance_ctr=0; | |
| 166 int SharedRuntime::_new_array_ctr=0; | |
| 167 int SharedRuntime::_multi1_ctr=0; | |
| 168 int SharedRuntime::_multi2_ctr=0; | |
| 169 int SharedRuntime::_multi3_ctr=0; | |
| 170 int SharedRuntime::_multi4_ctr=0; | |
| 171 int SharedRuntime::_multi5_ctr=0; | |
| 172 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 173 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 174 int SharedRuntime::_mon_enter_ctr=0; | |
| 175 int SharedRuntime::_mon_exit_ctr=0; | |
| 176 int SharedRuntime::_partial_subtype_ctr=0; | |
| 177 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 178 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 179 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 180 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 181 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 182 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 183 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 184 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 185 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 186 int SharedRuntime::_find_handler_ctr=0; | |
| 187 int SharedRuntime::_rethrow_ctr=0; | |
| 188 | |
| 189 int SharedRuntime::_ICmiss_index = 0; | |
| 190 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 191 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 192 | |
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193 |
| 0 | 194 void SharedRuntime::trace_ic_miss(address at) { |
| 195 for (int i = 0; i < _ICmiss_index; i++) { | |
| 196 if (_ICmiss_at[i] == at) { | |
| 197 _ICmiss_count[i]++; | |
| 198 return; | |
| 199 } | |
| 200 } | |
| 201 int index = _ICmiss_index++; | |
| 202 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 203 _ICmiss_at[index] = at; | |
| 204 _ICmiss_count[index] = 1; | |
| 205 } | |
| 206 | |
| 207 void SharedRuntime::print_ic_miss_histogram() { | |
| 208 if (ICMissHistogram) { | |
| 209 tty->print_cr ("IC Miss Histogram:"); | |
| 210 int tot_misses = 0; | |
| 211 for (int i = 0; i < _ICmiss_index; i++) { | |
| 212 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 213 tot_misses += _ICmiss_count[i]; | |
| 214 } | |
| 215 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 216 } | |
| 217 } | |
| 218 #endif // PRODUCT | |
| 219 | |
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220 #if INCLUDE_ALL_GCS |
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221 |
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222 // G1 write-barrier pre: executed before a pointer store. |
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223 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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224 if (orig == NULL) { |
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225 assert(false, "should be optimized out"); |
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226 return; |
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227 } |
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228 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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229 // store the original value that was in the field reference |
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230 thread->satb_mark_queue().enqueue(orig); |
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231 JRT_END |
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232 |
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233 // G1 write-barrier post: executed after a pointer store. |
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234 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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235 thread->dirty_card_queue().enqueue(card_addr); |
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236 JRT_END |
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237 |
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238 #endif // INCLUDE_ALL_GCS |
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239 |
| 0 | 240 |
| 241 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
| 242 return x * y; | |
| 243 JRT_END | |
| 244 | |
| 245 | |
| 246 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
| 247 if (x == min_jlong && y == CONST64(-1)) { | |
| 248 return x; | |
| 249 } else { | |
| 250 return x / y; | |
| 251 } | |
| 252 JRT_END | |
| 253 | |
| 254 | |
| 255 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
| 256 if (x == min_jlong && y == CONST64(-1)) { | |
| 257 return 0; | |
| 258 } else { | |
| 259 return x % y; | |
| 260 } | |
| 261 JRT_END | |
| 262 | |
| 263 | |
| 264 const juint float_sign_mask = 0x7FFFFFFF; | |
| 265 const juint float_infinity = 0x7F800000; | |
| 266 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
| 267 const julong double_infinity = CONST64(0x7FF0000000000000); | |
| 268 | |
| 269 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
| 270 #ifdef _WIN64 | |
| 271 // 64-bit Windows on amd64 returns the wrong values for | |
| 272 // infinity operands. | |
| 273 union { jfloat f; juint i; } xbits, ybits; | |
| 274 xbits.f = x; | |
| 275 ybits.f = y; | |
| 276 // x Mod Infinity == x unless x is infinity | |
| 277 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
| 278 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
| 279 return x; | |
| 280 } | |
| 281 #endif | |
| 282 return ((jfloat)fmod((double)x,(double)y)); | |
| 283 JRT_END | |
| 284 | |
| 285 | |
| 286 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
| 287 #ifdef _WIN64 | |
| 288 union { jdouble d; julong l; } xbits, ybits; | |
| 289 xbits.d = x; | |
| 290 ybits.d = y; | |
| 291 // x Mod Infinity == x unless x is infinity | |
| 292 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
| 293 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
| 294 return x; | |
| 295 } | |
| 296 #endif | |
| 297 return ((jdouble)fmod((double)x,(double)y)); | |
| 298 JRT_END | |
| 299 | |
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300 #ifdef __SOFTFP__ |
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301 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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302 return x + y; |
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303 JRT_END |
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304 |
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305 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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306 return x - y; |
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307 JRT_END |
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308 |
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309 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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310 return x * y; |
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311 JRT_END |
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312 |
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313 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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314 return x / y; |
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315 JRT_END |
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316 |
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317 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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318 return x + y; |
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319 JRT_END |
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320 |
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321 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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322 return x - y; |
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323 JRT_END |
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324 |
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325 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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326 return x * y; |
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327 JRT_END |
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328 |
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329 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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330 return x / y; |
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331 JRT_END |
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332 |
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333 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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334 return (jfloat)x; |
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335 JRT_END |
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336 |
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337 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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338 return (jdouble)x; |
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339 JRT_END |
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340 |
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341 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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342 return (jdouble)x; |
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343 JRT_END |
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344 |
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345 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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346 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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347 JRT_END |
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348 |
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349 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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350 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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351 JRT_END |
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352 |
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353 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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354 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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355 JRT_END |
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356 |
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357 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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358 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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359 JRT_END |
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360 |
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361 // Functions to return the opposite of the aeabi functions for nan. |
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362 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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363 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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364 JRT_END |
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365 |
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366 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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367 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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368 JRT_END |
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369 |
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370 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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371 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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372 JRT_END |
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373 |
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374 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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375 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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376 JRT_END |
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377 |
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378 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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379 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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380 JRT_END |
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381 |
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382 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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383 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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384 JRT_END |
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385 |
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386 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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387 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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388 JRT_END |
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389 |
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390 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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391 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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392 JRT_END |
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393 |
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394 // Intrinsics make gcc generate code for these. |
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395 float SharedRuntime::fneg(float f) { |
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396 return -f; |
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397 } |
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398 |
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399 double SharedRuntime::dneg(double f) { |
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400 return -f; |
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401 } |
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402 |
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403 #endif // __SOFTFP__ |
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404 |
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405 #if defined(__SOFTFP__) || defined(E500V2) |
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406 // Intrinsics make gcc generate code for these. |
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407 double SharedRuntime::dabs(double f) { |
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408 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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409 } |
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410 |
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411 #endif |
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412 |
| 14390 | 413 #if defined(__SOFTFP__) || defined(PPC32) |
|
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414 double SharedRuntime::dsqrt(double f) { |
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415 return sqrt(f); |
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416 } |
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417 #endif |
| 0 | 418 |
| 419 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
|
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420 if (g_isnan(x)) |
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421 return 0; |
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422 if (x >= (jfloat) max_jint) |
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423 return max_jint; |
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424 if (x <= (jfloat) min_jint) |
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425 return min_jint; |
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426 return (jint) x; |
| 0 | 427 JRT_END |
| 428 | |
| 429 | |
| 430 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
|
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431 if (g_isnan(x)) |
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432 return 0; |
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433 if (x >= (jfloat) max_jlong) |
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434 return max_jlong; |
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435 if (x <= (jfloat) min_jlong) |
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436 return min_jlong; |
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437 return (jlong) x; |
| 0 | 438 JRT_END |
| 439 | |
| 440 | |
| 441 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
|
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442 if (g_isnan(x)) |
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443 return 0; |
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444 if (x >= (jdouble) max_jint) |
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445 return max_jint; |
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446 if (x <= (jdouble) min_jint) |
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447 return min_jint; |
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448 return (jint) x; |
| 0 | 449 JRT_END |
| 450 | |
| 451 | |
| 452 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
|
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453 if (g_isnan(x)) |
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454 return 0; |
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455 if (x >= (jdouble) max_jlong) |
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456 return max_jlong; |
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457 if (x <= (jdouble) min_jlong) |
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458 return min_jlong; |
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459 return (jlong) x; |
| 0 | 460 JRT_END |
| 461 | |
| 462 | |
| 463 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
| 464 return (jfloat)x; | |
| 465 JRT_END | |
| 466 | |
| 467 | |
| 468 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
| 469 return (jfloat)x; | |
| 470 JRT_END | |
| 471 | |
| 472 | |
| 473 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
| 474 return (jdouble)x; | |
| 475 JRT_END | |
| 476 | |
| 477 // Exception handling accross interpreter/compiler boundaries | |
| 478 // | |
| 479 // exception_handler_for_return_address(...) returns the continuation address. | |
| 480 // The continuation address is the entry point of the exception handler of the | |
| 481 // previous frame depending on the return address. | |
| 482 | |
| 1295 | 483 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
|
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484 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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485 |
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486 // Reset method handle flag. |
|
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487 thread->set_is_method_handle_return(false); |
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488 |
|
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489 #ifdef GRAAL |
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490 // Graal's ExceptionHandlerStub expects the thread local exception PC to be clear |
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491 // and other exception handler continuations do not read it |
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492 thread->set_exception_pc(NULL); |
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493 #endif |
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494 |
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495 // The fastest case first |
| 0 | 496 CodeBlob* blob = CodeCache::find_blob(return_address); |
|
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497 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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498 if (nm != NULL) { |
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499 // Set flag if return address is a method handle call site. |
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500 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
| 0 | 501 // native nmethods don't have exception handlers |
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502 assert(!nm->is_native_method(), "no exception handler"); |
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503 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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504 if (nm->is_deopt_pc(return_address)) { |
|
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505 // If we come here because of a stack overflow, the stack may be |
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506 // unguarded. Reguard the stack otherwise if we return to the |
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507 // deopt blob and the stack bang causes a stack overflow we |
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508 // crash. |
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509 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); |
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510 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); |
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511 assert(guard_pages_enabled, "stack banging in deopt blob may cause crash"); |
| 0 | 512 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
| 513 } else { | |
|
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514 return nm->exception_begin(); |
| 0 | 515 } |
| 516 } | |
| 517 | |
| 518 // Entry code | |
| 519 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 520 return StubRoutines::catch_exception_entry(); | |
| 521 } | |
| 522 // Interpreted code | |
| 523 if (Interpreter::contains(return_address)) { | |
| 524 return Interpreter::rethrow_exception_entry(); | |
| 525 } | |
| 526 | |
|
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527 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
| 0 | 528 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
|
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529 |
| 0 | 530 #ifndef PRODUCT |
| 531 { ResourceMark rm; | |
| 532 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 533 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 534 tty->print_cr("b) other problem"); | |
| 535 } | |
| 536 #endif // PRODUCT | |
|
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537 |
| 0 | 538 ShouldNotReachHere(); |
| 539 return NULL; | |
| 540 } | |
| 541 | |
| 542 | |
| 1295 | 543 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 544 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 545 JRT_END |
| 546 | |
| 1295 | 547 |
| 0 | 548 address SharedRuntime::get_poll_stub(address pc) { |
| 549 address stub; | |
| 550 // Look up the code blob | |
| 551 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 552 | |
| 553 // Should be an nmethod | |
| 554 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 555 | |
| 556 // Look up the relocation information | |
| 557 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 558 "safepoint polling: type must be poll" ); | |
| 559 | |
| 560 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 561 "Only polling locations are used for safepoint"); | |
| 562 | |
| 563 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
|
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564 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
| 0 | 565 if (at_poll_return) { |
| 566 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 567 "polling page return stub not created yet"); | |
| 1748 | 568 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
|
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569 } else if (has_wide_vectors) { |
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570 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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571 "polling page vectors safepoint stub not created yet"); |
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572 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
| 0 | 573 } else { |
| 574 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 575 "polling page safepoint stub not created yet"); | |
| 1748 | 576 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 577 } |
| 578 #ifndef PRODUCT | |
| 579 if( TraceSafepoint ) { | |
| 580 char buf[256]; | |
| 581 jio_snprintf(buf, sizeof(buf), | |
| 582 "... found polling page %s exception at pc = " | |
| 583 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 584 at_poll_return ? "return" : "loop", | |
| 585 (intptr_t)pc, (intptr_t)stub); | |
| 586 tty->print_raw_cr(buf); | |
| 587 } | |
| 588 #endif // PRODUCT | |
| 589 return stub; | |
| 590 } | |
| 591 | |
| 592 | |
|
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593 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 594 assert(caller.is_interpreted_frame(), ""); |
| 595 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 596 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
|
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597 oop result = cast_to_oop(*caller.interpreter_frame_tos_at(args_size - 1)); |
| 0 | 598 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); |
| 599 return result; | |
| 600 } | |
| 601 | |
| 602 | |
| 603 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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604 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 605 vframeStream vfst(thread, true); |
| 606 methodHandle method = methodHandle(thread, vfst.method()); | |
| 607 address bcp = method()->bcp_from(vfst.bci()); | |
| 608 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 609 } | |
| 610 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 611 } | |
| 612 | |
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613 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 614 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 615 throw_and_post_jvmti_exception(thread, h_exception); | |
| 616 } | |
| 617 | |
|
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618 // The interpreter code to call this tracing function is only |
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619 // called/generated when TraceRedefineClasses has the right bits |
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620 // set. Since obsolete methods are never compiled, we don't have |
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621 // to modify the compilers to generate calls to this function. |
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622 // |
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623 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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624 JavaThread* thread, Method* method)) |
|
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625 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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626 |
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627 if (method->is_obsolete()) { |
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628 // We are calling an obsolete method, but this is not necessarily |
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629 // an error. Our method could have been redefined just after we |
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630 // fetched the Method* from the constant pool. |
|
610
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631 |
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632 // RC_TRACE macro has an embedded ResourceMark |
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633 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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634 ("calling obsolete method '%s'", |
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635 method->name_and_sig_as_C_string())); |
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636 if (RC_TRACE_ENABLED(0x00002000)) { |
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637 // this option is provided to debug calls to obsolete methods |
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638 guarantee(false, "faulting at call to an obsolete method."); |
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639 } |
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640 } |
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641 return 0; |
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642 JRT_END |
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643 |
| 0 | 644 // ret_pc points into caller; we are returning caller's exception handler |
| 645 // for given exception | |
| 646 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 647 bool force_unwind, bool top_frame_only) { | |
| 648 assert(nm != NULL, "must exist"); | |
| 649 ResourceMark rm; | |
| 650 | |
|
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651 #ifdef GRAAL |
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652 if (nm->is_compiled_by_graal()) { |
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653 // lookup exception handler for this pc |
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654 int catch_pco = ret_pc - nm->code_begin(); |
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655 ExceptionHandlerTable table(nm); |
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656 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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657 if (t != NULL) { |
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658 return nm->code_begin() + t->pco(); |
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659 } else { |
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660 // there is no exception handler for this pc => deoptimize |
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661 nm->make_not_entrant(); |
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662 JavaThread* thread = JavaThread::current(); |
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663 RegisterMap reg_map(thread); |
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664 frame runtime_frame = thread->last_frame(); |
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665 frame caller_frame = runtime_frame.sender(®_map); |
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666 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_not_compiled_exception_handler); |
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667 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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668 } |
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669 } |
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670 #endif |
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|
671 |
| 0 | 672 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
| 673 // determine handler bci, if any | |
| 674 EXCEPTION_MARK; | |
| 675 | |
| 676 int handler_bci = -1; | |
| 677 int scope_depth = 0; | |
| 678 if (!force_unwind) { | |
| 679 int bci = sd->bci(); | |
|
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680 bool recursive_exception = false; |
| 0 | 681 do { |
| 682 bool skip_scope_increment = false; | |
| 683 // exception handler lookup | |
| 684 KlassHandle ek (THREAD, exception->klass()); | |
|
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685 methodHandle mh(THREAD, sd->method()); |
|
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686 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
| 0 | 687 if (HAS_PENDING_EXCEPTION) { |
|
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688 recursive_exception = true; |
| 0 | 689 // We threw an exception while trying to find the exception handler. |
| 690 // Transfer the new exception to the exception handle which will | |
| 691 // be set into thread local storage, and do another lookup for an | |
| 692 // exception handler for this exception, this time starting at the | |
| 693 // BCI of the exception handler which caused the exception to be | |
| 694 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 695 // argument to ensure that the correct exception is thrown (4870175). | |
| 696 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 697 CLEAR_PENDING_EXCEPTION; | |
| 698 if (handler_bci >= 0) { | |
| 699 bci = handler_bci; | |
| 700 handler_bci = -1; | |
| 701 skip_scope_increment = true; | |
| 702 } | |
| 703 } | |
|
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704 else { |
|
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705 recursive_exception = false; |
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|
706 } |
| 0 | 707 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
| 708 sd = sd->sender(); | |
| 709 if (sd != NULL) { | |
| 710 bci = sd->bci(); | |
| 711 } | |
| 712 ++scope_depth; | |
| 713 } | |
|
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|
714 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
| 0 | 715 } |
| 716 | |
| 717 // found handling method => lookup exception handler | |
| 1748 | 718 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 719 |
| 720 ExceptionHandlerTable table(nm); | |
| 721 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 722 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 723 // Allow abbreviated catch tables. The idea is to allow a method | |
| 724 // to materialize its exceptions without committing to the exact | |
| 725 // routing of exceptions. In particular this is needed for adding | |
| 726 // a synthethic handler to unlock monitors when inlining | |
| 727 // synchonized methods since the unlock path isn't represented in | |
| 728 // the bytecodes. | |
| 729 t = table.entry_for(catch_pco, -1, 0); | |
| 730 } | |
| 731 | |
|
1378
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|
732 #ifdef COMPILER1 |
|
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|
733 if (t == NULL && nm->is_compiled_by_c1()) { |
|
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parents:
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|
734 assert(nm->unwind_handler_begin() != NULL, ""); |
|
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|
735 return nm->unwind_handler_begin(); |
|
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|
736 } |
|
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|
737 #endif |
|
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|
738 |
| 0 | 739 if (t == NULL) { |
| 740 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 741 tty->print_cr(" Exception:"); | |
| 742 exception->print(); | |
| 743 tty->cr(); | |
| 744 tty->print_cr(" Compiled exception table :"); | |
| 745 table.print(); | |
| 746 nm->print_code(); | |
| 747 guarantee(false, "missing exception handler"); | |
| 748 return NULL; | |
| 749 } | |
| 750 | |
| 1748 | 751 return nm->code_begin() + t->pco(); |
| 0 | 752 } |
| 753 | |
| 754 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 755 // These errors occur only at call sites | |
| 756 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 757 JRT_END | |
| 758 | |
|
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|
759 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
|
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|
760 // These errors occur only at call sites |
|
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|
761 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
|
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762 JRT_END |
|
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|
763 |
| 0 | 764 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 765 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 766 JRT_END | |
| 767 | |
| 768 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 769 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 770 JRT_END | |
| 771 | |
| 772 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 773 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 774 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 775 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 776 JRT_END | |
| 777 | |
| 778 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 779 // We avoid using the normal exception construction in this case because | |
| 780 // it performs an upcall to Java, and we're already out of stack space. | |
|
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781 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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782 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
| 0 | 783 Handle exception (thread, exception_oop); |
| 784 if (StackTraceInThrowable) { | |
| 785 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 786 } | |
| 787 throw_and_post_jvmti_exception(thread, exception); | |
| 788 JRT_END | |
| 789 | |
|
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|
790 #ifdef GRAAL |
|
5111
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Christian Haeubl <christian.haeubl@oracle.com>
parents:
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diff
changeset
|
791 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
|
422c979ff392
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Christian Haeubl <christian.haeubl@oracle.com>
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changeset
|
792 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
| 10409 | 793 thread->set_graal_implicit_exception_pc(pc); |
|
8337
37977d1dcedc
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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diff
changeset
|
794 thread->set_pending_deoptimization(Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret)); |
|
5111
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parents:
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|
795 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
|
2607
008adfd6d850
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Thomas Wuerthinger <thomas@wuerthinger.net>
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changeset
|
796 } |
|
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Christian Haeubl <christian.haeubl@oracle.com>
parents:
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diff
changeset
|
797 #endif |
|
2607
008adfd6d850
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Thomas Wuerthinger <thomas@wuerthinger.net>
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diff
changeset
|
798 |
| 0 | 799 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
| 800 address pc, | |
| 801 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 802 { | |
| 803 address target_pc = NULL; | |
| 804 | |
| 805 if (Interpreter::contains(pc)) { | |
| 806 #ifdef CC_INTERP | |
| 807 // C++ interpreter doesn't throw implicit exceptions | |
| 808 ShouldNotReachHere(); | |
| 809 #else | |
| 810 switch (exception_kind) { | |
| 811 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 812 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 813 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 814 default: ShouldNotReachHere(); | |
| 815 } | |
| 816 #endif // !CC_INTERP | |
| 817 } else { | |
| 818 switch (exception_kind) { | |
| 819 case STACK_OVERFLOW: { | |
| 820 // Stack overflow only occurs upon frame setup; the callee is | |
| 821 // going to be unwound. Dispatch to a shared runtime stub | |
| 822 // which will cause the StackOverflowError to be fabricated | |
| 823 // and processed. | |
|
17980
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
824 // Stack overflow should never occur during deoptimization: |
|
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
825 // the compiled method bangs the stack by as much as the |
|
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826 // interpreter would need in case of a deoptimization. The |
|
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827 // deoptimization blob and uncommon trap blob bang the stack |
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828 // in a debug VM to verify the correctness of the compiled |
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829 // method stack banging. |
|
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|
830 assert(thread->deopt_mark() == NULL, "no stack overflow from deopt blob/uncommon trap"); |
| 4944 | 831 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
| 0 | 832 return StubRoutines::throw_StackOverflowError_entry(); |
| 833 } | |
| 834 | |
| 835 case IMPLICIT_NULL: { | |
| 836 if (VtableStubs::contains(pc)) { | |
| 837 // We haven't yet entered the callee frame. Fabricate an | |
| 838 // exception and begin dispatching it in the caller. Since | |
| 839 // the caller was at a call site, it's safe to destroy all | |
| 840 // caller-saved registers, as these entry points do. | |
| 841 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
|
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842 |
|
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843 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
|
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844 if (vt_stub == NULL) return NULL; |
|
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845 |
| 0 | 846 if (vt_stub->is_abstract_method_error(pc)) { |
| 847 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 4944 | 848 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
| 0 | 849 return StubRoutines::throw_AbstractMethodError_entry(); |
| 850 } else { | |
| 4944 | 851 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
| 0 | 852 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 853 } | |
| 854 } else { | |
| 855 CodeBlob* cb = CodeCache::find_blob(pc); | |
|
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856 |
|
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857 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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|
858 if (cb == NULL) return NULL; |
| 0 | 859 |
| 860 // Exception happened in CodeCache. Must be either: | |
| 861 // 1. Inline-cache check in C2I handler blob, | |
| 862 // 2. Inline-cache check in nmethod, or | |
| 863 // 3. Implict null exception in nmethod | |
| 864 | |
| 865 if (!cb->is_nmethod()) { | |
| 11029 | 866 bool is_in_blob = cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(); |
| 867 if (!is_in_blob) { | |
|
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868 // Allow normal crash reporting to handle this |
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869 return NULL; |
| 11029 | 870 } |
| 4944 | 871 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
| 0 | 872 // There is no handler here, so we will simply unwind. |
| 873 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 874 } | |
| 875 | |
| 876 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 877 nmethod* nm = (nmethod*)cb; | |
| 878 if (nm->inlinecache_check_contains(pc)) { | |
| 879 // exception happened inside inline-cache check code | |
| 880 // => the nmethod is not yet active (i.e., the frame | |
| 881 // is not set up yet) => use return address pushed by | |
| 882 // caller => don't push another return address | |
| 4944 | 883 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
| 0 | 884 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 885 } | |
| 886 | |
|
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887 if (nm->method()->is_method_handle_intrinsic()) { |
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888 // exception happened inside MH dispatch code, similar to a vtable stub |
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889 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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890 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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891 } |
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892 |
| 0 | 893 #ifndef PRODUCT |
| 894 _implicit_null_throws++; | |
| 895 #endif | |
|
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896 #ifdef GRAAL |
|
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897 if (nm->is_compiled_by_graal() && nm->pc_desc_at(pc) != NULL) { |
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898 // If there's no PcDesc then we'll die way down inside of |
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899 // deopt instead of just getting normal error reporting, |
|
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900 // so only go there if it will succeed. |
|
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901 return deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
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902 } else { |
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903 #endif |
| 0 | 904 target_pc = nm->continuation_for_implicit_exception(pc); |
|
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905 #ifdef GRAAL |
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906 } |
|
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907 #endif |
| 1250 | 908 // If there's an unexpected fault, target_pc might be NULL, |
| 909 // in which case we want to fall through into the normal | |
| 910 // error handling code. | |
| 0 | 911 } |
| 912 | |
| 913 break; // fall through | |
| 914 } | |
| 915 | |
| 916 | |
| 917 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 918 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 919 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 920 #ifndef PRODUCT | |
| 921 _implicit_div0_throws++; | |
| 922 #endif | |
|
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|
923 #ifdef GRAAL |
|
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924 if (nm->is_compiled_by_graal() && nm->pc_desc_at(pc) != NULL) { |
|
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925 return deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
|
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926 } else { |
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|
927 #endif |
| 0 | 928 target_pc = nm->continuation_for_implicit_exception(pc); |
|
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|
929 #ifdef GRAAL |
|
1429
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Lukas Stadler <lukas.stadler@oracle.com>
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930 } |
|
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931 #endif |
| 1250 | 932 // If there's an unexpected fault, target_pc might be NULL, |
| 933 // in which case we want to fall through into the normal | |
| 934 // error handling code. | |
| 0 | 935 break; // fall through |
| 936 } | |
| 937 | |
| 938 default: ShouldNotReachHere(); | |
| 939 } | |
| 940 | |
| 941 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 942 | |
| 943 if (exception_kind == IMPLICIT_NULL) { | |
|
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944 #ifndef PRODUCT |
|
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|
945 // for AbortVMOnException flag |
|
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|
946 Exceptions::debug_check_abort("java.lang.NullPointerException"); |
|
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|
947 #endif //PRODUCT |
|
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|
948 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 949 } else { |
|
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950 #ifndef PRODUCT |
|
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951 // for AbortVMOnException flag |
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952 Exceptions::debug_check_abort("java.lang.ArithmeticException"); |
|
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953 #endif //PRODUCT |
|
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|
954 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 955 } |
| 956 return target_pc; | |
| 957 } | |
| 958 | |
| 959 ShouldNotReachHere(); | |
| 960 return NULL; | |
| 961 } | |
| 962 | |
| 963 | |
|
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|
964 /** |
|
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965 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
|
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966 * installed in the native function entry of all native Java methods before |
|
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967 * they get linked to their actual native methods. |
|
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968 * |
|
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|
969 * \note |
|
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|
970 * This method actually never gets called! The reason is because |
|
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|
971 * the interpreter's native entries call NativeLookup::lookup() which |
|
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|
972 * throws the exception when the lookup fails. The exception is then |
|
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|
973 * caught and forwarded on the return from NativeLookup::lookup() call |
|
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|
974 * before the call to the native function. This might change in the future. |
|
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|
975 */ |
|
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976 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
| 0 | 977 { |
|
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|
978 // We return a bad value here to make sure that the exception is |
|
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979 // forwarded before we look at the return value. |
|
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|
980 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
|
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981 } |
|
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|
982 JNI_END |
| 0 | 983 |
| 984 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 985 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 986 } | |
| 987 | |
| 988 | |
| 989 #ifndef PRODUCT | |
| 990 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 991 const frame f = thread->last_frame(); | |
| 992 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 993 #ifndef PRODUCT | |
| 994 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 995 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 996 #endif // !PRODUCT | |
| 997 return preserve_this_value; | |
| 998 JRT_END | |
| 999 #endif // !PRODUCT | |
| 1000 | |
| 1001 | |
| 1002 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 1003 os::yield_all(attempts); | |
| 1004 JRT_END | |
| 1005 | |
| 1006 | |
| 1007 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
|
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1008 #ifdef GRAAL |
|
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1009 if (!obj->klass()->has_finalizer()) { |
|
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|
1010 return; |
|
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1011 } |
|
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|
1012 #endif |
| 0 | 1013 assert(obj->is_oop(), "must be a valid oop"); |
|
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1014 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
|
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1015 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 1016 JRT_END |
| 1017 | |
| 1018 | |
| 1019 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 1020 if (thread != NULL) { | |
| 1021 if (thread->is_Java_thread()) { | |
| 1022 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 1023 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 1024 } | |
| 1025 } | |
| 1026 return 0; | |
| 1027 } | |
| 1028 | |
| 1029 /** | |
| 1030 * This function ought to be a void function, but cannot be because | |
| 1031 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 1032 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 1033 */ | |
|
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|
1034 int SharedRuntime::dtrace_object_alloc(oopDesc* o, int size) { |
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1035 return dtrace_object_alloc_base(Thread::current(), o, size); |
| 0 | 1036 } |
| 1037 | |
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1038 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o, int size) { |
| 0 | 1039 assert(DTraceAllocProbes, "wrong call"); |
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1040 Klass* klass = o->klass(); |
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1041 Symbol* name = klass->name(); |
| 4006 | 1042 #ifndef USDT2 |
| 0 | 1043 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 1044 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 4006 | 1045 #else /* USDT2 */ |
| 1046 HOTSPOT_OBJECT_ALLOC( | |
| 1047 get_java_tid(thread), | |
| 1048 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 1049 #endif /* USDT2 */ | |
| 0 | 1050 return 0; |
| 1051 } | |
| 1052 | |
| 1053 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1054 JavaThread* thread, Method* method)) |
| 0 | 1055 assert(DTraceMethodProbes, "wrong call"); |
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1056 Symbol* kname = method->klass_name(); |
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1057 Symbol* name = method->name(); |
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1058 Symbol* sig = method->signature(); |
| 4006 | 1059 #ifndef USDT2 |
| 0 | 1060 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 1061 kname->bytes(), kname->utf8_length(), | |
| 1062 name->bytes(), name->utf8_length(), | |
| 1063 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1064 #else /* USDT2 */ |
| 1065 HOTSPOT_METHOD_ENTRY( | |
| 1066 get_java_tid(thread), | |
| 1067 (char *) kname->bytes(), kname->utf8_length(), | |
| 1068 (char *) name->bytes(), name->utf8_length(), | |
| 1069 (char *) sig->bytes(), sig->utf8_length()); | |
| 1070 #endif /* USDT2 */ | |
| 0 | 1071 return 0; |
| 1072 JRT_END | |
| 1073 | |
| 1074 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1075 JavaThread* thread, Method* method)) |
| 0 | 1076 assert(DTraceMethodProbes, "wrong call"); |
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1077 Symbol* kname = method->klass_name(); |
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1078 Symbol* name = method->name(); |
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1079 Symbol* sig = method->signature(); |
| 4006 | 1080 #ifndef USDT2 |
| 0 | 1081 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 1082 kname->bytes(), kname->utf8_length(), | |
| 1083 name->bytes(), name->utf8_length(), | |
| 1084 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1085 #else /* USDT2 */ |
| 1086 HOTSPOT_METHOD_RETURN( | |
| 1087 get_java_tid(thread), | |
| 1088 (char *) kname->bytes(), kname->utf8_length(), | |
| 1089 (char *) name->bytes(), name->utf8_length(), | |
| 1090 (char *) sig->bytes(), sig->utf8_length()); | |
| 1091 #endif /* USDT2 */ | |
| 0 | 1092 return 0; |
| 1093 JRT_END | |
| 1094 | |
| 1095 | |
| 1096 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 1097 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1098 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 1099 // vtable updates, etc. Caller frame must be compiled. | |
| 1100 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 1101 ResourceMark rm(THREAD); | |
| 1102 | |
| 1103 // last java frame on stack (which includes native call frames) | |
| 1104 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 1105 | |
| 1106 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 1107 } | |
| 1108 | |
| 1109 | |
| 1110 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 1111 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1112 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 1113 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1114 vframeStream& vfst, | |
| 1115 Bytecodes::Code& bc, | |
| 1116 CallInfo& callinfo, TRAPS) { | |
| 1117 Handle receiver; | |
| 1118 Handle nullHandle; //create a handy null handle for exception returns | |
| 1119 | |
| 1120 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1121 | |
| 1122 // Find caller and bci from vframe | |
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1123 methodHandle caller(THREAD, vfst.method()); |
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1124 int bci = vfst.bci(); |
| 0 | 1125 |
| 1126 // Find bytecode | |
| 2142 | 1127 Bytecode_invoke bytecode(caller, bci); |
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1128 bc = bytecode.invoke_code(); |
| 2142 | 1129 int bytecode_index = bytecode.index(); |
| 0 | 1130 |
| 1131 // Find receiver for non-static call | |
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1132 if (bc != Bytecodes::_invokestatic && |
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1133 bc != Bytecodes::_invokedynamic && |
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1134 bc != Bytecodes::_invokehandle) { |
| 0 | 1135 // This register map must be update since we need to find the receiver for |
| 1136 // compiled frames. The receiver might be in a register. | |
| 1137 RegisterMap reg_map2(thread); | |
| 1138 frame stubFrame = thread->last_frame(); | |
| 1139 // Caller-frame is a compiled frame | |
| 1140 frame callerFrame = stubFrame.sender(®_map2); | |
| 1141 | |
| 2142 | 1142 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1143 if (callee.is_null()) { |
| 1144 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1145 } | |
| 1146 // Retrieve from a compiled argument list | |
| 1147 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1148 | |
| 1149 if (receiver.is_null()) { | |
| 1150 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1151 } | |
| 1152 } | |
| 1153 | |
| 1154 // Resolve method. This is parameterized by bytecode. | |
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1155 constantPoolHandle constants(THREAD, caller->constants()); |
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1156 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
| 0 | 1157 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
| 1158 | |
| 1159 #ifdef ASSERT | |
| 1160 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1161 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic && bc != Bytecodes::_invokehandle) { |
| 0 | 1162 assert(receiver.not_null(), "should have thrown exception"); |
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1163 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1164 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
| 0 | 1165 // klass is already loaded |
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1166 KlassHandle static_receiver_klass(THREAD, rk); |
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1167 // Method handle invokes might have been optimized to a direct call |
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1168 // so don't check for the receiver class. |
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1169 // FIXME this weakens the assert too much |
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1170 methodHandle callee = callinfo.selected_method(); |
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1171 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1172 callee->is_method_handle_intrinsic() || |
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1173 callee->is_compiled_lambda_form(), |
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1174 "actual receiver must be subclass of static receiver klass"); |
| 0 | 1175 if (receiver_klass->oop_is_instance()) { |
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1176 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
| 0 | 1177 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1178 receiver_klass()->print(); |
| 0 | 1179 } |
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1180 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
| 0 | 1181 } |
| 1182 } | |
| 1183 #endif | |
| 1184 | |
| 1185 return receiver; | |
| 1186 } | |
| 1187 | |
| 1188 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1189 ResourceMark rm(THREAD); | |
| 1190 // We need first to check if any Java activations (compiled, interpreted) | |
| 1191 // exist on the stack since last JavaCall. If not, we need | |
| 1192 // to get the target method from the JavaCall wrapper. | |
| 1193 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1194 methodHandle callee_method; | |
| 1195 if (vfst.at_end()) { | |
| 1196 // No Java frames were found on stack since we did the JavaCall. | |
| 1197 // Hence the stack can only contain an entry_frame. We need to | |
| 1198 // find the target method from the stub frame. | |
| 1199 RegisterMap reg_map(thread, false); | |
| 1200 frame fr = thread->last_frame(); | |
| 1201 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1202 fr = fr.sender(®_map); | |
| 1203 assert(fr.is_entry_frame(), "must be"); | |
| 1204 // fr is now pointing to the entry frame. | |
| 1205 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1206 } else { | |
| 1207 Bytecodes::Code bc; | |
| 1208 CallInfo callinfo; | |
| 1209 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1210 callee_method = callinfo.selected_method(); | |
| 1211 } | |
| 1212 assert(callee_method()->is_method(), "must be"); | |
| 1213 return callee_method; | |
| 1214 } | |
| 1215 | |
| 1216 // Resolves a call. | |
| 1217 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1218 bool is_virtual, | |
| 1219 bool is_optimized, TRAPS) { | |
| 1220 methodHandle callee_method; | |
| 1221 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1222 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1223 int retry_count = 0; | |
| 1224 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1225 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1226 // If has a pending exception then there is no need to re-try to |
| 1227 // resolve this method. | |
| 1228 // If the method has been redefined, we need to try again. | |
| 1229 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1230 // require that java.lang.Object has been updated. | |
| 1231 | |
| 1232 // It is very unlikely that method is redefined more than 100 times | |
| 1233 // in the middle of resolve. If it is looping here more than 100 times | |
| 1234 // means then there could be a bug here. | |
| 1235 guarantee((retry_count++ < 100), | |
| 1236 "Could not resolve to latest version of redefined method"); | |
| 1237 // method is redefined in the middle of resolve so re-try. | |
| 1238 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1239 } | |
| 1240 } | |
| 1241 return callee_method; | |
| 1242 } | |
| 1243 | |
| 1244 // Resolves a call. The compilers generate code for calls that go here | |
| 1245 // and are patched with the real destination of the call. | |
| 1246 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1247 bool is_virtual, | |
| 1248 bool is_optimized, TRAPS) { | |
| 1249 | |
| 1250 ResourceMark rm(thread); | |
| 1251 RegisterMap cbl_map(thread, false); | |
| 1252 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1253 | |
| 1295 | 1254 CodeBlob* caller_cb = caller_frame.cb(); |
| 1255 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1256 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 13441 | 1257 |
| 0 | 1258 // make sure caller is not getting deoptimized |
| 1259 // and removed before we are done with it. | |
| 1260 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1261 nmethodLocker caller_lock(caller_nm); |
| 0 | 1262 |
| 1263 // determine call info & receiver | |
| 1264 // note: a) receiver is NULL for static calls | |
| 1265 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1266 CallInfo call_info; | |
| 1267 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1268 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1269 call_info, CHECK_(methodHandle())); | |
| 1270 methodHandle callee_method = call_info.selected_method(); | |
| 1271 | |
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1272 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1273 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1274 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1275 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
| 0 | 1276 |
| 13441 | 1277 // We do not patch the call site if the caller nmethod has been made non-entrant. |
| 1278 if (!caller_nm->is_in_use()) { | |
| 1279 return callee_method; | |
| 1280 } | |
| 1281 | |
| 0 | 1282 #ifndef PRODUCT |
| 1283 // tracing/debugging/statistics | |
| 1284 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1285 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1286 (&_resolve_static_ctr); | |
| 1287 Atomic::inc(addr); | |
| 1288 | |
| 1289 if (TraceCallFixup) { | |
| 1290 ResourceMark rm(thread); | |
| 1291 tty->print("resolving %s%s (%s) call to", | |
| 1292 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1293 Bytecodes::name(invoke_code)); | |
| 1294 callee_method->print_short_name(tty); | |
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1295 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
| 0 | 1296 } |
| 1297 #endif | |
| 1298 | |
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1299 // JSR 292 key invariant: |
| 1295 | 1300 // If the resolved method is a MethodHandle invoke target the call |
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1301 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1302 // leaving the stack in a state unknown to either caller or callee |
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1303 // TODO detune for now but we might need it again |
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1304 // assert(!callee_method->is_compiled_lambda_form() || |
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1305 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
| 1295 | 1306 |
| 0 | 1307 // Compute entry points. This might require generation of C2I converter |
| 1308 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1309 // computation of the entry points is independent of patching the call. We | |
| 1310 // always return the entry-point, but we only patch the stub if the call has | |
| 1311 // not been deoptimized. Return values: For a virtual call this is an | |
| 1312 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1313 // virtual this is just a destination address. | |
| 1314 | |
| 1315 StaticCallInfo static_call_info; | |
| 1316 CompiledICInfo virtual_call_info; | |
| 1317 | |
| 1318 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1319 // we are done patching the code. | |
| 1295 | 1320 nmethod* callee_nm = callee_method->code(); |
| 13441 | 1321 if (callee_nm != NULL && !callee_nm->is_in_use()) { |
| 1322 // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded. | |
| 1323 callee_nm = NULL; | |
| 1324 } | |
| 1295 | 1325 nmethodLocker nl_callee(callee_nm); |
| 0 | 1326 #ifdef ASSERT |
| 1295 | 1327 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1328 #endif |
| 1329 | |
| 1330 if (is_virtual) { | |
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1331 assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check"); |
| 0 | 1332 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); |
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1333 KlassHandle h_klass(THREAD, invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass()); |
| 0 | 1334 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, |
| 1335 is_optimized, static_bound, virtual_call_info, | |
| 1336 CHECK_(methodHandle())); | |
| 1337 } else { | |
| 1338 // static call | |
| 1339 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1340 } | |
| 1341 | |
| 1342 // grab lock, check for deoptimization and potentially patch caller | |
| 1343 { | |
| 1344 MutexLocker ml_patch(CompiledIC_lock); | |
| 1345 | |
| 13441 | 1346 // Lock blocks for safepoint during which both nmethods can change state. |
| 1347 | |
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1348 // Now that we are ready to patch if the Method* was redefined then |
| 0 | 1349 // don't update call site and let the caller retry. |
| 13441 | 1350 // Don't update call site if caller nmethod has been made non-entrant |
| 1351 // as it is a waste of time. | |
| 1352 // Don't update call site if callee nmethod was unloaded or deoptimized. | |
| 1353 // Don't update call site if callee nmethod was replaced by an other nmethod | |
| 1354 // which may happen when multiply alive nmethod (tiered compilation) | |
| 1355 // will be supported. | |
| 1356 if (!callee_method->is_old() && caller_nm->is_in_use() && | |
| 1357 (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) { | |
| 0 | 1358 #ifdef ASSERT |
| 1359 // We must not try to patch to jump to an already unloaded method. | |
| 1360 if (dest_entry_point != 0) { | |
| 13441 | 1361 CodeBlob* cb = CodeCache::find_blob(dest_entry_point); |
| 1362 assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm), | |
| 1363 "should not call unloaded nmethod"); | |
| 0 | 1364 } |
| 1365 #endif | |
| 1366 if (is_virtual) { | |
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1367 nmethod* nm = callee_nm; |
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1368 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1369 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
| 0 | 1370 if (inline_cache->is_clean()) { |
| 1371 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1372 } | |
| 1373 } else { | |
| 1374 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1375 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1376 } | |
| 1377 } | |
| 1378 | |
| 1379 } // unlock CompiledIC_lock | |
| 1380 | |
| 1381 return callee_method; | |
| 1382 } | |
| 1383 | |
| 1384 | |
| 1385 // Inline caches exist only in compiled code | |
| 1386 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1387 #ifdef ASSERT | |
| 1388 RegisterMap reg_map(thread, false); | |
| 1389 frame stub_frame = thread->last_frame(); | |
| 1390 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1391 frame caller_frame = stub_frame.sender(®_map); | |
| 1392 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
| 1393 #endif /* ASSERT */ | |
| 1394 | |
| 1395 methodHandle callee_method; | |
| 1396 JRT_BLOCK | |
| 1397 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1398 // Return Method* through TLS |
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1399 thread->set_vm_result_2(callee_method()); |
| 0 | 1400 JRT_BLOCK_END |
| 1401 // return compiled code entry point after potential safepoints | |
| 1402 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1403 return callee_method->verified_code_entry(); | |
| 1404 JRT_END | |
| 1405 | |
| 1406 | |
| 1407 // Handle call site that has been made non-entrant | |
| 1408 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1409 // 6243940 We might end up in here if the callee is deoptimized | |
| 1410 // as we race to call it. We don't want to take a safepoint if | |
| 1411 // the caller was interpreted because the caller frame will look | |
| 1412 // interpreted to the stack walkers and arguments are now | |
| 1413 // "compiled" so it is much better to make this transition | |
| 1414 // invisible to the stack walking code. The i2c path will | |
| 1415 // place the callee method in the callee_target. It is stashed | |
| 1416 // there because if we try and find the callee by normal means a | |
| 1417 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1418 RegisterMap reg_map(thread, false); | |
| 1419 frame stub_frame = thread->last_frame(); | |
| 1420 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1421 frame caller_frame = stub_frame.sender(®_map); | |
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1422 |
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1423 if (caller_frame.is_interpreted_frame() || |
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1424 caller_frame.is_entry_frame()) { |
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1425 Method* callee = thread->callee_target(); |
| 0 | 1426 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1427 thread->set_vm_result_2(callee); |
| 0 | 1428 thread->set_callee_target(NULL); |
| 1429 return callee->get_c2i_entry(); | |
| 1430 } | |
| 1431 | |
| 1432 // Must be compiled to compiled path which is safe to stackwalk | |
| 1433 methodHandle callee_method; | |
| 1434 JRT_BLOCK | |
| 1435 // Force resolving of caller (if we called from compiled frame) | |
| 1436 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1437 thread->set_vm_result_2(callee_method()); |
| 0 | 1438 JRT_BLOCK_END |
| 1439 // return compiled code entry point after potential safepoints | |
| 1440 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1441 return callee_method->verified_code_entry(); | |
| 1442 JRT_END | |
| 1443 | |
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1444 // Handle abstract method call |
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1445 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_abstract(JavaThread* thread)) |
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1446 return StubRoutines::throw_AbstractMethodError_entry(); |
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1447 JRT_END |
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1448 |
| 0 | 1449 |
| 1450 // resolve a static call and patch code | |
| 1451 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1452 methodHandle callee_method; | |
| 1453 JRT_BLOCK | |
| 1454 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1455 thread->set_vm_result_2(callee_method()); |
| 0 | 1456 JRT_BLOCK_END |
| 1457 // return compiled code entry point after potential safepoints | |
| 1458 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1459 return callee_method->verified_code_entry(); | |
| 1460 JRT_END | |
| 1461 | |
| 1462 | |
| 1463 // resolve virtual call and update inline cache to monomorphic | |
| 1464 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1465 methodHandle callee_method; | |
| 1466 JRT_BLOCK | |
| 1467 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1468 thread->set_vm_result_2(callee_method()); |
| 0 | 1469 JRT_BLOCK_END |
| 1470 // return compiled code entry point after potential safepoints | |
| 1471 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1472 return callee_method->verified_code_entry(); | |
| 1473 JRT_END | |
| 1474 | |
| 1475 | |
| 1476 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1477 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1478 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1479 methodHandle callee_method; | |
| 1480 JRT_BLOCK | |
| 1481 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1482 thread->set_vm_result_2(callee_method()); |
| 0 | 1483 JRT_BLOCK_END |
| 1484 // return compiled code entry point after potential safepoints | |
| 1485 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1486 return callee_method->verified_code_entry(); | |
| 1487 JRT_END | |
| 1488 | |
| 1489 | |
| 1490 | |
| 1491 | |
| 1492 | |
| 1493 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1494 ResourceMark rm(thread); | |
| 1495 CallInfo call_info; | |
| 1496 Bytecodes::Code bc; | |
| 1497 | |
| 1498 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1499 // receivers for non-static calls | |
| 1500 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1501 CHECK_(methodHandle())); | |
| 1502 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1503 // If we fell thru to below we would think that the site was going megamorphic | |
| 1504 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1505 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1506 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1507 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1508 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1509 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1510 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1511 // | |
| 1512 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1513 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1514 if (TraceCallFixup) { | |
| 1515 RegisterMap reg_map(thread, false); | |
| 1516 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1517 ResourceMark rm(thread); | |
| 1518 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1519 callee_method->print_short_name(tty); | |
| 1520 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1521 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1522 } | |
| 1523 return callee_method; | |
| 1524 } | |
| 1525 | |
| 1526 methodHandle callee_method = call_info.selected_method(); | |
| 1527 | |
| 1528 bool should_be_mono = false; | |
| 1529 | |
| 1530 #ifndef PRODUCT | |
| 1531 Atomic::inc(&_ic_miss_ctr); | |
| 1532 | |
| 1533 // Statistics & Tracing | |
| 1534 if (TraceCallFixup) { | |
| 1535 ResourceMark rm(thread); | |
| 1536 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1537 callee_method->print_short_name(tty); | |
| 1538 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1539 } | |
| 1540 | |
| 1541 if (ICMissHistogram) { | |
| 1542 MutexLocker m(VMStatistic_lock); | |
| 1543 RegisterMap reg_map(thread, false); | |
| 1544 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1545 // produce statistics under the lock | |
| 1546 trace_ic_miss(f.pc()); | |
| 1547 } | |
| 1548 #endif | |
| 1549 | |
| 1550 // install an event collector so that when a vtable stub is created the | |
| 1551 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1552 // event can't be posted when the stub is created as locks are held | |
| 1553 // - instead the event will be deferred until the event collector goes | |
| 1554 // out of scope. | |
| 1555 JvmtiDynamicCodeEventCollector event_collector; | |
| 1556 | |
| 1557 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1558 // made non-entrant or we are called from interpreted. | |
| 1559 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1560 RegisterMap reg_map(thread, false); | |
| 1561 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1562 CodeBlob* cb = caller_frame.cb(); | |
| 1563 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1564 // Not a non-entrant nmethod, so find inline_cache | |
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1565 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
| 0 | 1566 bool should_be_mono = false; |
| 1567 if (inline_cache->is_optimized()) { | |
| 1568 if (TraceCallFixup) { | |
| 1569 ResourceMark rm(thread); | |
| 1570 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1571 callee_method->print_short_name(tty); | |
| 1572 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1573 } | |
| 1574 should_be_mono = true; | |
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1575 } else if (inline_cache->is_icholder_call()) { |
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1576 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1577 if ( ic_oop != NULL) { |
| 0 | 1578 |
| 1579 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1580 // This isn't a real miss. We must have seen that compiled code | |
| 1581 // is now available and we want the call site converted to a | |
| 1582 // monomorphic compiled call site. | |
| 1583 // We can't assert for callee_method->code() != NULL because it | |
| 1584 // could have been deoptimized in the meantime | |
| 1585 if (TraceCallFixup) { | |
| 1586 ResourceMark rm(thread); | |
| 1587 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1588 callee_method->print_short_name(tty); | |
| 1589 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1590 } | |
| 1591 should_be_mono = true; | |
| 1592 } | |
| 1593 } | |
| 1594 } | |
| 1595 | |
| 1596 if (should_be_mono) { | |
| 1597 | |
| 1598 // We have a path that was monomorphic but was going interpreted | |
| 1599 // and now we have (or had) a compiled entry. We correct the IC | |
| 1600 // by using a new icBuffer. | |
| 1601 CompiledICInfo info; | |
| 1602 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1603 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1604 receiver_klass, | |
| 1605 inline_cache->is_optimized(), | |
| 1606 false, | |
| 1607 info, CHECK_(methodHandle())); | |
| 1608 inline_cache->set_to_monomorphic(info); | |
| 1609 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 12294 | 1610 // Potential change to megamorphic |
| 1611 bool successful = inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1612 if (!successful) { | |
| 1613 inline_cache->set_to_clean(); | |
| 1614 } | |
| 0 | 1615 } else { |
| 1616 // Either clean or megamorphic | |
| 1617 } | |
| 1618 } | |
| 1619 } // Release CompiledIC_lock | |
| 1620 | |
| 1621 return callee_method; | |
| 1622 } | |
| 1623 | |
| 1624 // | |
| 1625 // Resets a call-site in compiled code so it will get resolved again. | |
| 1626 // This routines handles both virtual call sites, optimized virtual call | |
| 1627 // sites, and static call sites. Typically used to change a call sites | |
| 1628 // destination from compiled to interpreted. | |
| 1629 // | |
| 1630 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1631 ResourceMark rm(thread); | |
| 1632 RegisterMap reg_map(thread, false); | |
| 1633 frame stub_frame = thread->last_frame(); | |
| 1634 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1635 frame caller = stub_frame.sender(®_map); | |
| 1636 | |
| 1637 // Do nothing if the frame isn't a live compiled frame. | |
| 1638 // nmethod could be deoptimized by the time we get here | |
| 1639 // so no update to the caller is needed. | |
| 1640 | |
| 1641 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1642 | |
| 1643 address pc = caller.pc(); | |
| 1644 | |
| 1645 // Default call_addr is the location of the "basic" call. | |
| 1646 // Determine the address of the call we a reresolving. With | |
| 1647 // Inline Caches we will always find a recognizable call. | |
| 1648 // With Inline Caches disabled we may or may not find a | |
| 1649 // recognizable call. We will always find a call for static | |
| 1650 // calls and for optimized virtual calls. For vanilla virtual | |
| 1651 // calls it depends on the state of the UseInlineCaches switch. | |
| 1652 // | |
| 1653 // With Inline Caches disabled we can get here for a virtual call | |
| 1654 // for two reasons: | |
| 1655 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1656 // will run us thru handle_wrong_method and we will eventually | |
| 1657 // end up in the interpreter to throw the ame. | |
| 1658 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1659 // call and between the time we fetch the entry address and | |
| 1660 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1661 // we will wind up in the interprter (thru a c2i with c2). | |
| 1662 // | |
| 1663 address call_addr = NULL; | |
| 1664 { | |
| 1665 // Get call instruction under lock because another thread may be | |
| 1666 // busy patching it. | |
| 1667 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1668 // Location of call instruction | |
| 1669 if (NativeCall::is_call_before(pc)) { | |
| 1670 NativeCall *ncall = nativeCall_before(pc); | |
| 1671 call_addr = ncall->instruction_address(); | |
| 1672 } | |
| 1673 } | |
| 1674 | |
| 1675 // Check for static or virtual call | |
| 1676 bool is_static_call = false; | |
| 1677 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1678 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1679 // this is done with it. | |
| 1680 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1681 nmethodLocker nmlock(caller_nm); | |
| 1682 | |
| 1683 if (call_addr != NULL) { | |
| 1684 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1685 int ret = iter.next(); // Get item | |
| 1686 if (ret) { | |
| 1687 assert(iter.addr() == call_addr, "must find call"); | |
| 1688 if (iter.type() == relocInfo::static_call_type) { | |
| 1689 is_static_call = true; | |
| 1690 } else { | |
| 1691 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1692 iter.type() == relocInfo::opt_virtual_call_type | |
| 1693 , "unexpected relocInfo. type"); | |
| 1694 } | |
| 1695 } else { | |
| 1696 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1697 } | |
| 1698 | |
| 1699 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1700 // than directly setting it to the new destination, since resolving of calls | |
| 1701 // is always done through the same code path. (experience shows that it | |
| 1702 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1703 // to a wrong method). It should not be performance critical, since the | |
| 1704 // resolve is only done once. | |
| 1705 | |
| 1706 MutexLocker ml(CompiledIC_lock); | |
| 1707 // | |
| 1708 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1709 // as it is a waste of time | |
| 1710 // | |
| 1711 if (caller_nm->is_in_use()) { | |
| 1712 if (is_static_call) { | |
| 1713 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1714 ssc->set_to_clean(); | |
| 1715 } else { | |
| 1716 // compiled, dispatched call (which used to call an interpreted method) | |
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1717 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
| 0 | 1718 inline_cache->set_to_clean(); |
| 1719 } | |
| 1720 } | |
| 1721 } | |
| 1722 | |
| 1723 } | |
| 1724 | |
| 1725 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1726 | |
| 1727 | |
| 1728 #ifndef PRODUCT | |
| 1729 Atomic::inc(&_wrong_method_ctr); | |
| 1730 | |
| 1731 if (TraceCallFixup) { | |
| 1732 ResourceMark rm(thread); | |
| 1733 tty->print("handle_wrong_method reresolving call to"); | |
| 1734 callee_method->print_short_name(tty); | |
| 1735 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1736 } | |
| 1737 #endif | |
| 1738 | |
| 1739 return callee_method; | |
| 1740 } | |
| 1741 | |
|
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1742 #ifdef ASSERT |
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1743 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1744 const BasicType* sig_bt, |
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1745 const VMRegPair* regs) { |
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1746 ResourceMark rm; |
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1747 const int total_args_passed = method->size_of_parameters(); |
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1748 const VMRegPair* regs_with_member_name = regs; |
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1749 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1750 |
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1751 const int member_arg_pos = total_args_passed - 1; |
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1752 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1753 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1754 |
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1755 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1756 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1757 |
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1758 for (int i = 0; i < member_arg_pos; i++) { |
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1759 VMReg a = regs_with_member_name[i].first(); |
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1760 VMReg b = regs_without_member_name[i].first(); |
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1761 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1762 } |
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1763 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1764 } |
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1765 #endif |
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1766 |
| 0 | 1767 // --------------------------------------------------------------------------- |
| 1768 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1769 // we were called by a compiled method. However we could have lost a race | |
| 1770 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1771 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1772 // so he no longer calls into the interpreter. |
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1773 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1774 Method* moop(method); |
| 0 | 1775 |
| 1776 address entry_point = moop->from_compiled_entry(); | |
| 1777 | |
| 1778 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1779 // been resolved yet, in which case this function will be called from | |
| 1780 // an nmethod that has been patched for deopt and we can ignore the | |
| 1781 // request for a fixup. | |
| 1782 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1783 // is now back to the i2c in that case we don't need to patch and if | |
| 1784 // we did we'd leap into space because the callsite needs to use | |
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1785 // "to interpreter" stub in order to load up the Method*. Don't |
| 0 | 1786 // ask me how I know this... |
| 1787 | |
| 1788 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1789 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1790 return; | |
| 1791 } | |
| 1792 | |
| 1793 // The check above makes sure this is a nmethod. | |
| 1794 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1795 assert(nm, "must be"); | |
| 1796 | |
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1797 // Get the return PC for the passed caller PC. |
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1798 address return_pc = caller_pc + frame::pc_return_offset; |
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1799 |
| 0 | 1800 // There is a benign race here. We could be attempting to patch to a compiled |
| 1801 // entry point at the same time the callee is being deoptimized. If that is | |
| 1802 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1803 // call site with the same old data. clear_code will set code() to NULL | |
| 1804 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1805 // to patch. If we hit the window where the callee has a c2i in the | |
| 1806 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1807 // and patch the code with the same old data. Asi es la vida. | |
| 1808 | |
| 1809 if (moop->code() == NULL) return; | |
| 1810 | |
| 1205 | 1811 if (nm->is_in_use()) { |
| 0 | 1812 |
| 1813 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1814 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1815 if (NativeCall::is_call_before(return_pc)) { |
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1816 NativeCall *call = nativeCall_before(return_pc); |
| 0 | 1817 // |
| 1818 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1819 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1820 // see compiled code and attempt to patch the site by calling us. This would | |
| 1821 // then incorrectly convert the call site to optimized and its downhill from | |
| 1822 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1823 // just made a call site that could be megamorphic into a monomorphic site | |
| 1824 // for the rest of its life! Just another racing bug in the life of | |
| 1825 // fixup_callers_callsite ... | |
| 1826 // | |
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1827 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1828 iter.next(); |
| 1829 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1830 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1831 if ( typ != relocInfo::static_call_type && | |
| 1832 typ != relocInfo::opt_virtual_call_type && | |
| 1833 typ != relocInfo::static_stub_type) { | |
| 1834 return; | |
| 1835 } | |
| 1836 address destination = call->destination(); | |
| 1837 if (destination != entry_point) { | |
| 1838 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1839 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1840 if (callee == cb || callee->is_adapter_blob()) { | |
| 1841 // static call or optimized virtual | |
| 1842 if (TraceCallFixup) { | |
| 1204 | 1843 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1844 moop->print_short_name(tty); |
| 1845 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1846 } | |
| 1847 call->set_destination_mt_safe(entry_point); | |
| 1848 } else { | |
| 1849 if (TraceCallFixup) { | |
| 1850 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1851 moop->print_short_name(tty); | |
| 1852 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1853 } | |
| 1854 // assert is too strong could also be resolve destinations. | |
| 1855 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1856 } | |
| 1857 } else { | |
| 1858 if (TraceCallFixup) { | |
| 1204 | 1859 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1860 moop->print_short_name(tty); |
| 1861 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1862 } | |
| 1863 } | |
| 1864 } | |
| 1865 } | |
| 1866 IRT_END | |
| 1867 | |
| 1868 | |
| 1869 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1870 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1871 oopDesc* dest, jint dest_pos, | |
| 1872 jint length, | |
| 1873 JavaThread* thread)) { | |
| 1874 #ifndef PRODUCT | |
| 1875 _slow_array_copy_ctr++; | |
| 1876 #endif | |
| 1877 // Check if we have null pointers | |
| 1878 if (src == NULL || dest == NULL) { | |
| 1879 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1880 } | |
| 1881 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1882 // even though the copy_array API also performs dynamic checks to ensure | |
| 1883 // that src and dest are truly arrays (and are conformable). | |
| 1884 // The copy_array mechanism is awkward and could be removed, but | |
| 1885 // the compilers don't call this function except as a last resort, | |
| 1886 // so it probably doesn't matter. | |
| 6983 | 1887 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
| 0 | 1888 (arrayOopDesc*)dest, dest_pos, |
| 1889 length, thread); | |
| 1890 } | |
| 1891 JRT_END | |
| 1892 | |
| 1893 char* SharedRuntime::generate_class_cast_message( | |
| 1894 JavaThread* thread, const char* objName) { | |
| 1895 | |
| 1896 // Get target class name from the checkcast instruction | |
| 1897 vframeStream vfst(thread, true); | |
| 1898 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1899 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 6983 | 1900 Klass* targetKlass = vfst.method()->constants()->klass_at( |
| 1901 cc.index(), thread); | |
| 0 | 1902 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1903 } | |
| 1904 | |
| 1905 char* SharedRuntime::generate_class_cast_message( | |
| 710 | 1906 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1907 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1908 | |
| 53 | 1909 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1910 if (NULL == message) { |
| 53 | 1911 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1912 message = const_cast<char*>(objName); |
| 1913 } else { | |
| 1914 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1915 } | |
| 1916 return message; | |
| 1917 } | |
| 1918 | |
| 1919 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1920 (void) JavaThread::current()->reguard_stack(); | |
| 1921 JRT_END | |
| 1922 | |
| 1923 | |
| 1924 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1925 #ifndef PRODUCT | |
| 1926 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1927 #endif | |
| 1928 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1929 oop obj(_obj); | |
| 1930 #ifndef PRODUCT | |
| 1931 _monitor_enter_ctr++; // monitor enter slow | |
| 1932 #endif | |
| 1933 if (PrintBiasedLockingStatistics) { | |
| 1934 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1935 } | |
| 1936 Handle h_obj(THREAD, obj); | |
| 1937 if (UseBiasedLocking) { | |
| 1938 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1939 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1940 } else { | |
| 1941 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1942 } | |
| 1943 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1944 JRT_END | |
| 1945 | |
| 1946 #ifndef PRODUCT | |
| 1947 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1948 #endif | |
| 1949 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1950 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1951 oop obj(_obj); | |
| 1952 #ifndef PRODUCT | |
| 1953 _monitor_exit_ctr++; // monitor exit slow | |
| 1954 #endif | |
| 1955 Thread* THREAD = JavaThread::current(); | |
| 1956 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1957 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1958 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1959 #undef MIGHT_HAVE_PENDING | |
| 1960 #ifdef MIGHT_HAVE_PENDING | |
| 1961 // Save and restore any pending_exception around the exception mark. | |
| 1962 // While the slow_exit must not throw an exception, we could come into | |
| 1963 // this routine with one set. | |
| 1964 oop pending_excep = NULL; | |
| 1965 const char* pending_file; | |
| 1966 int pending_line; | |
| 1967 if (HAS_PENDING_EXCEPTION) { | |
| 1968 pending_excep = PENDING_EXCEPTION; | |
| 1969 pending_file = THREAD->exception_file(); | |
| 1970 pending_line = THREAD->exception_line(); | |
| 1971 CLEAR_PENDING_EXCEPTION; | |
| 1972 } | |
| 1973 #endif /* MIGHT_HAVE_PENDING */ | |
| 1974 | |
| 1975 { | |
| 1976 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1977 EXCEPTION_MARK; | |
| 1978 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1979 } | |
| 1980 | |
| 1981 #ifdef MIGHT_HAVE_PENDING | |
| 1982 if (pending_excep != NULL) { | |
| 1983 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1984 } | |
| 1985 #endif /* MIGHT_HAVE_PENDING */ | |
| 1986 JRT_END | |
| 1987 | |
| 1988 #ifndef PRODUCT | |
| 1989 | |
| 1990 void SharedRuntime::print_statistics() { | |
| 1991 ttyLocker ttyl; | |
| 1992 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1993 | |
| 1994 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1995 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1996 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1997 | |
| 1998 SharedRuntime::print_ic_miss_histogram(); | |
| 1999 | |
| 2000 if (CountRemovableExceptions) { | |
| 2001 if (_nof_removable_exceptions > 0) { | |
| 2002 Unimplemented(); // this counter is not yet incremented | |
| 2003 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 2004 } | |
| 2005 } | |
| 2006 | |
| 2007 // Dump the JRT_ENTRY counters | |
| 2008 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 2009 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 2010 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 2011 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 2012 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 2013 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 2014 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 2015 | |
| 2016 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 2017 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 2018 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 2019 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 2020 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 2021 | |
| 2022 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 2023 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 2024 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 2025 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 2026 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 2027 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 2028 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 2029 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 2030 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 2031 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 2032 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 2033 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 2034 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 2035 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 2036 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 2037 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 2038 | |
|
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2039 AdapterHandlerLibrary::print_statistics(); |
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2040 |
| 0 | 2041 if (xtty != NULL) xtty->tail("statistics"); |
| 2042 } | |
| 2043 | |
| 2044 inline double percent(int x, int y) { | |
| 2045 return 100.0 * x / MAX2(y, 1); | |
| 2046 } | |
| 2047 | |
| 2048 class MethodArityHistogram { | |
| 2049 public: | |
| 2050 enum { MAX_ARITY = 256 }; | |
| 2051 private: | |
| 2052 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 2053 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 2054 static int _max_arity; // max. arity seen | |
| 2055 static int _max_size; // max. arg size seen | |
| 2056 | |
| 2057 static void add_method_to_histogram(nmethod* nm) { | |
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2058 Method* m = nm->method(); |
| 0 | 2059 ArgumentCount args(m->signature()); |
| 2060 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 2061 int argsize = m->size_of_parameters(); | |
| 2062 arity = MIN2(arity, MAX_ARITY-1); | |
| 2063 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 2064 int count = nm->method()->compiled_invocation_count(); | |
| 2065 _arity_histogram[arity] += count; | |
| 2066 _size_histogram[argsize] += count; | |
| 2067 _max_arity = MAX2(_max_arity, arity); | |
| 2068 _max_size = MAX2(_max_size, argsize); | |
| 2069 } | |
| 2070 | |
| 2071 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 2072 const int N = MIN2(5, n); | |
| 2073 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2074 double sum = 0; | |
| 2075 double weighted_sum = 0; | |
| 2076 int i; | |
| 2077 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 2078 double rest = sum; | |
| 2079 double percent = sum / 100; | |
| 2080 for (i = 0; i <= N; i++) { | |
| 2081 rest -= histo[i]; | |
| 2082 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 2083 } | |
| 2084 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 2085 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 2086 } | |
| 2087 | |
| 2088 void print_histogram() { | |
| 2089 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2090 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 2091 tty->print_cr("\nSame for parameter size (in words):"); | |
| 2092 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 2093 tty->cr(); | |
| 2094 } | |
| 2095 | |
| 2096 public: | |
| 2097 MethodArityHistogram() { | |
| 2098 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 2099 _max_arity = _max_size = 0; | |
| 2100 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 2101 CodeCache::nmethods_do(add_method_to_histogram); | |
| 2102 print_histogram(); | |
| 2103 } | |
| 2104 }; | |
| 2105 | |
| 2106 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2107 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2108 int MethodArityHistogram::_max_arity; | |
| 2109 int MethodArityHistogram::_max_size; | |
| 2110 | |
| 2111 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2112 tty->print_cr("Calls from compiled code:"); | |
| 2113 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2114 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2115 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2116 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2117 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2118 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2119 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2120 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2121 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2122 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2123 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2124 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2125 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2126 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2127 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2128 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2129 tty->cr(); | |
| 2130 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2131 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2132 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2133 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2134 tty->cr(); | |
| 2135 | |
| 2136 MethodArityHistogram h; | |
| 2137 } | |
| 2138 #endif | |
| 2139 | |
| 2140 | |
|
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2141 // A simple wrapper class around the calling convention information |
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2142 // that allows sharing of adapters for the same calling convention. |
| 6197 | 2143 class AdapterFingerPrint : public CHeapObj<mtCode> { |
|
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2144 private: |
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2145 enum { |
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2146 _basic_type_bits = 4, |
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2147 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2148 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2149 _compact_int_count = 3 |
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2150 }; |
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2151 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2152 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2153 |
|
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2154 union { |
|
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2155 int _compact[_compact_int_count]; |
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2156 int* _fingerprint; |
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2157 } _value; |
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2158 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2159 // Otherwise _value._fingerprint is the array. |
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2160 |
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2161 // Remap BasicTypes that are handled equivalently by the adapters. |
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2162 // These are correct for the current system but someday it might be |
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2163 // necessary to make this mapping platform dependent. |
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2164 static int adapter_encoding(BasicType in) { |
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2165 switch(in) { |
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2166 case T_BOOLEAN: |
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2167 case T_BYTE: |
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2168 case T_SHORT: |
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2169 case T_CHAR: |
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2170 // There are all promoted to T_INT in the calling convention |
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2171 return T_INT; |
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2172 |
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2173 case T_OBJECT: |
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2174 case T_ARRAY: |
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2175 // In other words, we assume that any register good enough for |
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2176 // an int or long is good enough for a managed pointer. |
|
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2177 #ifdef _LP64 |
| 1506 | 2178 return T_LONG; |
|
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2179 #else |
| 1506 | 2180 return T_INT; |
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2181 #endif |
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2182 |
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2183 case T_INT: |
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2184 case T_LONG: |
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2185 case T_FLOAT: |
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2186 case T_DOUBLE: |
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2187 case T_VOID: |
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2188 return in; |
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2189 |
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2190 default: |
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2191 ShouldNotReachHere(); |
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2192 return T_CONFLICT; |
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2193 } |
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2194 } |
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2195 |
|
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2196 public: |
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2197 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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2198 // The fingerprint is based on the BasicType signature encoded |
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2199 // into an array of ints with eight entries per int. |
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2200 int* ptr; |
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2201 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2202 if (len <= _compact_int_count) { |
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2203 assert(_compact_int_count == 3, "else change next line"); |
|
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2204 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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2205 // Storing the signature encoded as signed chars hits about 98% |
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2206 // of the time. |
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2207 _length = -len; |
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2208 ptr = _value._compact; |
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2209 } else { |
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2210 _length = len; |
| 6197 | 2211 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
|
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2212 ptr = _value._fingerprint; |
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2213 } |
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2214 |
|
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2215 // Now pack the BasicTypes with 8 per int |
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2216 int sig_index = 0; |
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2217 for (int index = 0; index < len; index++) { |
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2218 int value = 0; |
|
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2219 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
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2220 int bt = ((sig_index < total_args_passed) |
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2221 ? adapter_encoding(sig_bt[sig_index++]) |
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2222 : 0); |
|
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2223 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
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2224 value = (value << _basic_type_bits) | bt; |
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2225 } |
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2226 ptr[index] = value; |
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2227 } |
|
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2228 } |
|
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2229 |
|
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2230 ~AdapterFingerPrint() { |
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|
2231 if (_length > 0) { |
| 6197 | 2232 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
|
1187
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|
2233 } |
|
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|
2234 } |
|
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|
2235 |
|
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|
2236 int value(int index) { |
|
1187
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|
2237 if (_length < 0) { |
|
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|
2238 return _value._compact[index]; |
|
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|
2239 } |
|
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|
2240 return _value._fingerprint[index]; |
|
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|
2241 } |
|
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diff
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|
2242 int length() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2243 if (_length < 0) return -_length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2244 return _length; |
|
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|
2245 } |
|
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|
2246 |
|
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diff
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|
2247 bool is_compact() { |
|
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|
2248 return _length <= 0; |
|
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|
2249 } |
|
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diff
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|
2250 |
|
cf0685d550f1
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|
2251 unsigned int compute_hash() { |
|
1207
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|
2252 int hash = 0; |
|
1187
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|
2253 for (int i = 0; i < length(); i++) { |
|
1207
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|
2254 int v = value(i); |
|
1187
cf0685d550f1
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|
2255 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
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|
2256 } |
|
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diff
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|
2257 return (unsigned int)hash; |
|
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never
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|
2258 } |
|
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diff
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|
2259 |
|
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diff
changeset
|
2260 const char* as_string() { |
|
cf0685d550f1
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changeset
|
2261 stringStream st; |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
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diff
changeset
|
2262 st.print("0x"); |
|
1187
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|
2263 for (int i = 0; i < length(); i++) { |
|
3841
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|
2264 st.print("%08x", value(i)); |
|
1187
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|
2265 } |
|
cf0685d550f1
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diff
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|
2266 return st.as_string(); |
|
cf0685d550f1
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|
2267 } |
|
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diff
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|
2268 |
|
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|
2269 bool equals(AdapterFingerPrint* other) { |
|
cf0685d550f1
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|
2270 if (other->_length != _length) { |
|
cf0685d550f1
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diff
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|
2271 return false; |
|
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diff
changeset
|
2272 } |
|
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changeset
|
2273 if (_length < 0) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2274 assert(_compact_int_count == 3, "else change next line"); |
|
1207
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|
2275 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
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|
2276 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
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changeset
|
2277 _value._compact[2] == other->_value._compact[2]; |
|
1187
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|
2278 } else { |
|
cf0685d550f1
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parents:
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changeset
|
2279 for (int i = 0; i < _length; i++) { |
|
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changeset
|
2280 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
|
cf0685d550f1
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parents:
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|
2281 return false; |
|
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never
parents:
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diff
changeset
|
2282 } |
|
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parents:
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changeset
|
2283 } |
|
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parents:
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diff
changeset
|
2284 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2285 return true; |
|
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never
parents:
1142
diff
changeset
|
2286 } |
|
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diff
changeset
|
2287 }; |
|
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diff
changeset
|
2288 |
|
cf0685d550f1
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diff
changeset
|
2289 |
|
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changeset
|
2290 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
| 6197 | 2291 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
|
1187
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|
2292 friend class AdapterHandlerTableIterator; |
|
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diff
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|
2293 |
|
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|
2294 private: |
|
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parents:
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diff
changeset
|
2295 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
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changeset
|
2296 #ifndef PRODUCT |
|
1187
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diff
changeset
|
2297 static int _lookups; // number of calls to lookup |
|
cf0685d550f1
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diff
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|
2298 static int _buckets; // number of buckets checked |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2299 static int _equals; // number of buckets checked with matching hash |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2300 static int _hits; // number of successful lookups |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2301 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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diff
changeset
|
2302 #endif |
|
cf0685d550f1
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parents:
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diff
changeset
|
2303 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2304 AdapterHandlerEntry* bucket(int i) { |
| 6197 | 2305 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
|
1187
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|
2306 } |
|
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parents:
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diff
changeset
|
2307 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2308 public: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2309 AdapterHandlerTable() |
| 6197 | 2310 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2311 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2312 // Create a new entry suitable for insertion in the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2313 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
| 6197 | 2314 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2315 entry->init(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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parents:
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diff
changeset
|
2316 return entry; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2317 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2318 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2319 // Insert an entry into the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2320 void add(AdapterHandlerEntry* entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2321 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
|
2322 add_entry(index, entry); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2323 } |
|
cf0685d550f1
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diff
changeset
|
2324 |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2325 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
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parents:
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diff
changeset
|
2326 entry->deallocate(); |
| 6197 | 2327 BasicHashtable<mtCode>::free_entry(entry); |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2328 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2329 |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2330 // Find a entry with the same fingerprint if it exists |
|
1207
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diff
changeset
|
2331 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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1257
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|
2332 NOT_PRODUCT(_lookups++); |
|
1207
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diff
changeset
|
2333 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
|
2334 unsigned int hash = fp.compute_hash(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2335 int index = hash_to_index(hash); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2336 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
|
2337 NOT_PRODUCT(_buckets++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2338 if (e->hash() == hash) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2339 NOT_PRODUCT(_equals++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2340 if (fp.equals(e->fingerprint())) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2341 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2342 if (fp.is_compact()) _compact++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2343 _hits++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2344 #endif |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2345 return e; |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2346 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2347 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2348 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2349 return NULL; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2350 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2351 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2352 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2353 void print_statistics() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2354 ResourceMark rm; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2355 int longest = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2356 int empty = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2357 int total = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2358 int nonempty = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2359 for (int index = 0; index < table_size(); index++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2360 int count = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2361 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2362 count++; |
|
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|
2363 } |
|
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|
2364 if (count != 0) nonempty++; |
|
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|
2365 if (count == 0) empty++; |
|
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|
2366 if (count > longest) longest = count; |
|
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|
2367 total += count; |
|
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|
2368 } |
|
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|
2369 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2370 empty, longest, total, total / (double)nonempty); |
|
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|
2371 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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|
2372 _lookups, _buckets, _equals, _hits, _compact); |
|
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2373 } |
|
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|
2374 #endif |
|
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|
2375 }; |
|
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|
2376 |
|
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|
2377 |
|
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|
2378 #ifndef PRODUCT |
|
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2379 |
|
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2380 int AdapterHandlerTable::_lookups; |
|
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2381 int AdapterHandlerTable::_buckets; |
|
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|
2382 int AdapterHandlerTable::_equals; |
|
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2383 int AdapterHandlerTable::_hits; |
|
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|
2384 int AdapterHandlerTable::_compact; |
|
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|
2385 |
|
1681
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|
2386 #endif |
|
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2387 |
|
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|
2388 class AdapterHandlerTableIterator : public StackObj { |
|
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2389 private: |
|
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|
2390 AdapterHandlerTable* _table; |
|
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|
2391 int _index; |
|
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|
2392 AdapterHandlerEntry* _current; |
|
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|
2393 |
|
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|
2394 void scan() { |
|
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|
2395 while (_index < _table->table_size()) { |
|
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2396 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2397 _index++; |
|
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2398 if (a != NULL) { |
|
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|
2399 _current = a; |
|
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|
2400 return; |
|
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|
2401 } |
|
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|
2402 } |
|
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|
2403 } |
|
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|
2404 |
|
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|
2405 public: |
|
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2406 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
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|
2407 scan(); |
|
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|
2408 } |
|
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|
2409 bool has_next() { |
|
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|
2410 return _current != NULL; |
|
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|
2411 } |
|
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|
2412 AdapterHandlerEntry* next() { |
|
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|
2413 if (_current != NULL) { |
|
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|
2414 AdapterHandlerEntry* result = _current; |
|
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|
2415 _current = _current->next(); |
|
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|
2416 if (_current == NULL) scan(); |
|
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|
2417 return result; |
|
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|
2418 } else { |
|
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|
2419 return NULL; |
|
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|
2420 } |
|
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|
2421 } |
|
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|
2422 }; |
|
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|
2423 |
|
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|
2424 |
| 0 | 2425 // --------------------------------------------------------------------------- |
| 2426 // Implementation of AdapterHandlerLibrary | |
|
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|
2427 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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2428 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2429 const int AdapterHandlerLibrary_size = 16*K; |
|
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2430 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
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|
2431 |
|
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|
2432 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
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|
2433 // Should be called only when AdapterHandlerLibrary_lock is active. |
|
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|
2434 if (_buffer == NULL) // Initialize lazily |
|
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|
2435 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
|
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|
2436 return _buffer; |
|
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|
2437 } |
| 0 | 2438 |
| 2439 void AdapterHandlerLibrary::initialize() { | |
|
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|
2440 if (_adapters != NULL) return; |
|
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|
2441 _adapters = new AdapterHandlerTable(); |
| 0 | 2442 |
| 2443 // Create a special handler for abstract methods. Abstract methods | |
| 2444 // are never compiled so an i2c entry is somewhat meaningless, but | |
|
13382
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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diff
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|
2445 // throw AbstractMethodError just in case. |
|
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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|
2446 // Pass wrong_method_abstract for the c2i transitions to return |
|
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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|
2447 // AbstractMethodError for invalid invocations. |
|
570aaefce624
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|
2448 address wrong_method_abstract = SharedRuntime::get_handle_wrong_method_abstract_stub(); |
|
1187
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|
2449 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
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|
2450 StubRoutines::throw_AbstractMethodError_entry(), |
|
13382
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|
2451 wrong_method_abstract, wrong_method_abstract); |
| 0 | 2452 } |
| 2453 | |
|
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|
2454 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
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|
2455 address i2c_entry, |
|
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|
2456 address c2i_entry, |
|
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|
2457 address c2i_unverified_entry) { |
|
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|
2458 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2459 } |
|
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|
2460 |
|
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|
2461 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
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|
2462 // Use customized signature handler. Need to lock around updates to |
|
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|
2463 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
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|
2464 // and a single writer: this could be fixed if it becomes a |
|
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|
2465 // problem). |
| 0 | 2466 |
| 2467 // Get the address of the ic_miss handlers before we grab the | |
| 2468 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2469 // was caused by the initialization of the stubs happening | |
| 2470 // while we held the lock and then notifying jvmti while | |
| 2471 // holding it. This just forces the initialization to be a little | |
| 2472 // earlier. | |
| 2473 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2474 assert(ic_miss != NULL, "must have handler"); | |
| 2475 | |
|
1187
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|
2476 ResourceMark rm; |
|
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|
2477 |
| 1748 | 2478 NOT_PRODUCT(int insts_size); |
| 17611 | 2479 AdapterBlob* new_adapter = NULL; |
|
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|
2480 AdapterHandlerEntry* entry = NULL; |
|
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|
2481 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2482 { |
| 2483 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2484 // make sure data structure is initialized | |
| 2485 initialize(); | |
| 2486 | |
| 2487 if (method->is_abstract()) { | |
|
1187
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|
2488 return _abstract_method_handler; |
| 0 | 2489 } |
| 2490 | |
|
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|
2491 // Fill in the signature array, for the calling-convention call. |
|
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|
2492 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
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|
2493 |
|
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|
2494 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
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|
2495 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
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|
2496 int i = 0; |
|
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|
2497 if (!method->is_static()) // Pass in receiver first |
|
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|
2498 sig_bt[i++] = T_OBJECT; |
|
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|
2499 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
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|
2500 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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|
2501 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
cf0685d550f1
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|
2502 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2503 } |
|
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|
2504 assert(i == total_args_passed, ""); |
|
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|
2505 |
|
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diff
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|
2506 // Lookup method signature's fingerprint |
|
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diff
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|
2507 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
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|
2508 |
|
1207
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|
2509 #ifdef ASSERT |
|
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|
2510 AdapterHandlerEntry* shared_entry = NULL; |
| 17611 | 2511 // Start adapter sharing verification only after the VM is booted. |
| 2512 if (VerifyAdapterSharing && (entry != NULL)) { | |
|
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|
2513 shared_entry = entry; |
|
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|
2514 entry = NULL; |
|
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|
2515 } |
|
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|
2516 #endif |
|
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|
2517 |
|
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|
2518 if (entry != NULL) { |
|
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|
2519 return entry; |
| 0 | 2520 } |
| 2521 | |
|
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|
2522 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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|
2523 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
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|
2524 |
|
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|
2525 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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|
2526 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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|
2527 |
| 17611 | 2528 // StubRoutines::code2() is initialized after this function can be called. As a result, |
| 2529 // VerifyAdapterCalls and VerifyAdapterSharing can fail if we re-use code that generated | |
| 2530 // prior to StubRoutines::code2() being set. Checks refer to checks generated in an I2C | |
| 2531 // stub that ensure that an I2C stub is called from an interpreter frame. | |
| 2532 bool contains_all_checks = StubRoutines::code2() != NULL; | |
| 2533 | |
| 0 | 2534 // Create I2C & C2I handlers |
|
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|
2535 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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|
2536 if (buf != NULL) { |
| 1748 | 2537 CodeBuffer buffer(buf); |
|
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|
2538 short buffer_locs[20]; |
|
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|
2539 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
|
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|
2540 sizeof(buffer_locs)/sizeof(relocInfo)); |
| 17611 | 2541 |
|
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|
2542 MacroAssembler _masm(&buffer); |
|
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|
2543 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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|
2544 total_args_passed, |
|
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|
2545 comp_args_on_stack, |
|
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|
2546 sig_bt, |
|
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|
2547 regs, |
|
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|
2548 fingerprint); |
|
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|
2549 #ifdef ASSERT |
|
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|
2550 if (VerifyAdapterSharing) { |
|
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|
2551 if (shared_entry != NULL) { |
| 17611 | 2552 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size()), "code must match"); |
|
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|
2553 // Release the one just created and return the original |
|
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|
2554 _adapters->free_entry(entry); |
|
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|
2555 return shared_entry; |
|
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|
2556 } else { |
| 17611 | 2557 entry->save_code(buf->code_begin(), buffer.insts_size()); |
|
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|
2558 } |
|
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|
2559 } |
|
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diff
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|
2560 #endif |
|
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|
2561 |
| 17611 | 2562 new_adapter = AdapterBlob::create(&buffer); |
| 1748 | 2563 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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|
2564 } |
| 17611 | 2565 if (new_adapter == NULL) { |
| 28 | 2566 // CodeCache is full, disable compilation |
| 2567 // Ought to log this but compile log is only per compile thread | |
| 2568 // and we're some non descript Java thread. | |
| 1202 | 2569 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2570 CompileBroker::handle_full_code_cache(); | |
|
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|
2571 return NULL; // Out of CodeCache space |
| 28 | 2572 } |
| 17611 | 2573 entry->relocate(new_adapter->content_begin()); |
| 0 | 2574 #ifndef PRODUCT |
| 2575 // debugging suppport | |
|
6266
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|
2576 if (PrintAdapterHandlers || PrintStubCode) { |
|
6796
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changeset
|
2577 ttyLocker ttyl; |
|
6266
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|
2578 entry->print_adapter_on(tty); |
|
1d7922586cf6
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|
2579 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
|
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|
2580 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
|
6266
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|
2581 method->signature()->as_C_string(), insts_size); |
| 0 | 2582 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
|
6266
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|
2583 if (Verbose || PrintStubCode) { |
|
1d7922586cf6
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|
2584 address first_pc = entry->base_address(); |
|
6796
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|
2585 if (first_pc != NULL) { |
|
6266
1d7922586cf6
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|
2586 Disassembler::decode(first_pc, first_pc + insts_size); |
|
6796
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|
2587 tty->cr(); |
|
b31471cdc53e
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|
2588 } |
|
6266
1d7922586cf6
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diff
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|
2589 } |
| 0 | 2590 } |
| 2591 #endif | |
| 17611 | 2592 // Add the entry only if the entry contains all required checks (see sharedRuntime_xxx.cpp) |
| 2593 // The checks are inserted only if -XX:+VerifyAdapterCalls is specified. | |
| 2594 if (contains_all_checks || !VerifyAdapterCalls) { | |
| 2595 _adapters->add(entry); | |
| 2596 } | |
| 0 | 2597 } |
| 2598 // Outside of the lock | |
| 17611 | 2599 if (new_adapter != NULL) { |
| 0 | 2600 char blob_id[256]; |
| 2601 jio_snprintf(blob_id, | |
| 2602 sizeof(blob_id), | |
|
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|
2603 "%s(%s)@" PTR_FORMAT, |
| 17611 | 2604 new_adapter->name(), |
|
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diff
changeset
|
2605 fingerprint->as_string(), |
| 17611 | 2606 new_adapter->content_begin()); |
| 2607 Forte::register_stub(blob_id, new_adapter->content_begin(),new_adapter->content_end()); | |
| 0 | 2608 |
| 2609 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 17611 | 2610 JvmtiExport::post_dynamic_code_generated(blob_id, new_adapter->content_begin(), new_adapter->content_end()); |
| 0 | 2611 } |
| 2612 } | |
|
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|
2613 return entry; |
| 0 | 2614 } |
| 2615 | |
|
6266
1d7922586cf6
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diff
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|
2616 address AdapterHandlerEntry::base_address() { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2617 address base = _i2c_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2618 if (base == NULL) base = _c2i_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2619 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2620 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2621 return base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2622 } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2623 |
| 0 | 2624 void AdapterHandlerEntry::relocate(address new_base) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2625 address old_base = base_address(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2626 assert(old_base != NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2627 ptrdiff_t delta = new_base - old_base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2628 if (_i2c_entry != NULL) |
| 0 | 2629 _i2c_entry += delta; |
|
6266
1d7922586cf6
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diff
changeset
|
2630 if (_c2i_entry != NULL) |
| 0 | 2631 _c2i_entry += delta; |
|
6266
1d7922586cf6
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diff
changeset
|
2632 if (_c2i_unverified_entry != NULL) |
| 0 | 2633 _c2i_unverified_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2634 assert(base_address() == new_base, ""); |
| 0 | 2635 } |
| 2636 | |
|
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|
2637 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2638 void AdapterHandlerEntry::deallocate() { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2639 delete _fingerprint; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2640 #ifdef ASSERT |
| 6197 | 2641 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2642 #endif |
|
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|
2643 } |
|
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|
2644 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2645 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2646 #ifdef ASSERT |
|
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|
2647 // Capture the code before relocation so that it can be compared |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2648 // against other versions. If the code is captured after relocation |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2649 // then relative instructions won't be equivalent. |
| 17611 | 2650 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length) { |
| 6197 | 2651 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
| 17611 | 2652 _saved_code_length = length; |
|
1207
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|
2653 memcpy(_saved_code, buffer, length); |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2654 } |
|
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|
2655 |
|
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|
2656 |
| 17611 | 2657 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length) { |
| 2658 if (length != _saved_code_length) { | |
|
1207
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|
2659 return false; |
|
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diff
changeset
|
2660 } |
| 17611 | 2661 |
| 2662 return (memcmp(buffer, _saved_code, length) == 0) ? true : false; | |
|
1207
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|
2663 } |
|
74c848d437ab
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diff
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|
2664 #endif |
|
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|
2665 |
|
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|
2666 |
| 17625 | 2667 /** |
| 2668 * Create a native wrapper for this native method. The wrapper converts the | |
| 2669 * Java-compiled calling convention to the native convention, handles | |
| 2670 * arguments, and transitions to native. On return from the native we transition | |
| 2671 * back to java blocking if a safepoint is in progress. | |
| 2672 */ | |
| 2673 void AdapterHandlerLibrary::create_native_wrapper(methodHandle method) { | |
| 0 | 2674 ResourceMark rm; |
| 2675 nmethod* nm = NULL; | |
| 2676 | |
|
6266
1d7922586cf6
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changeset
|
2677 assert(method->is_native(), "must be native"); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2678 assert(method->is_method_handle_intrinsic() || |
|
1d7922586cf6
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diff
changeset
|
2679 method->has_native_function(), "must have something valid to call!"); |
| 0 | 2680 |
| 2681 { | |
| 17625 | 2682 // Perform the work while holding the lock, but perform any printing outside the lock |
| 0 | 2683 MutexLocker mu(AdapterHandlerLibrary_lock); |
| 2684 // See if somebody beat us to it | |
| 2685 nm = method->code(); | |
| 17625 | 2686 if (nm != NULL) { |
| 2687 return; | |
| 0 | 2688 } |
| 2689 | |
| 17625 | 2690 const int compile_id = CompileBroker::assign_compile_id(method, CompileBroker::standard_entry_bci); |
| 2691 assert(compile_id > 0, "Must generate native wrapper"); | |
| 2692 | |
| 2693 | |
|
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|
2694 ResourceMark rm; |
|
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|
2695 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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|
2696 if (buf != NULL) { |
| 1748 | 2697 CodeBuffer buffer(buf); |
|
742
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|
2698 double locs_buf[20]; |
|
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changeset
|
2699 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
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|
2700 MacroAssembler _masm(&buffer); |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2701 |
|
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diff
changeset
|
2702 // Fill in the signature array, for the calling-convention call. |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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parents:
6725
diff
changeset
|
2703 const int total_args_passed = method->size_of_parameters(); |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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6725
diff
changeset
|
2704 |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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6725
diff
changeset
|
2705 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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parents:
6725
diff
changeset
|
2706 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2707 int i=0; |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2708 if( !method->is_static() ) // Pass in receiver first |
|
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diff
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|
2709 sig_bt[i++] = T_OBJECT; |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2710 SignatureStream ss(method->signature()); |
|
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diff
changeset
|
2711 for( ; !ss.at_return_type(); ss.next()) { |
|
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diff
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|
2712 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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diff
changeset
|
2713 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2714 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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diff
changeset
|
2715 } |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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6725
diff
changeset
|
2716 assert(i == total_args_passed, ""); |
|
742
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|
2717 BasicType ret_type = ss.type(); |
|
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diff
changeset
|
2718 |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2719 // Now get the compiled-Java layout as input (or output) arguments. |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2720 // NOTE: Stubs for compiled entry points of method handle intrinsics |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2721 // are just trampolines so the argument registers must be outgoing ones. |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2722 const bool is_outgoing = method->is_method_handle_intrinsic(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2723 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
|
742
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|
2724 |
|
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|
2725 // Generate the compiled-to-native wrapper code |
| 17625 | 2726 nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type); |
| 2727 | |
| 2728 if (nm != NULL) { | |
| 2729 method->set_code(method, nm); | |
| 2730 } | |
| 0 | 2731 } |
| 17625 | 2732 } // Unlock AdapterHandlerLibrary_lock |
| 2733 | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2734 |
| 0 | 2735 // Install the generated code. |
| 2736 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2737 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2738 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2739 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2740 } |
| 0 | 2741 nm->post_compiled_method_load_event(); |
| 2742 } else { | |
| 2743 // CodeCache is full, disable compilation | |
| 1202 | 2744 CompileBroker::handle_full_code_cache(); |
| 0 | 2745 } |
| 2746 } | |
| 2747 | |
|
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2748 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2749 assert(thread == JavaThread::current(), "must be"); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2750 // 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
never
parents:
4872
diff
changeset
|
2751 // _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
never
parents:
4872
diff
changeset
|
2752 // 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
|
2753 // until needs_gc has been cleared. |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2754 if (thread->in_critical()) { |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2755 return; |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2756 } |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2757 // Lock and unlock a critical section to give the system a chance to block |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2758 GC_locker::lock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2759 GC_locker::unlock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2760 JRT_END |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
changeset
|
2761 |
|
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2762 #ifdef HAVE_DTRACE_H |
|
17915
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2763 /** |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2764 * Create a dtrace nmethod for this method. The wrapper converts the |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2765 * Java-compiled calling convention to the native convention, makes a dummy call |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2766 * (actually nops for the size of the call instruction, which become a trap if |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2767 * probe is enabled), and finally returns to the caller. Since this all looks like a |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2768 * leaf, no thread transition is needed. |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
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diff
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|
2769 */ |
|
116
018d5b58dd4f
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62
diff
changeset
|
2770 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
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|
2771 ResourceMark rm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
changeset
|
2772 nmethod* nm = NULL; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2773 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2774 if (PrintCompilation) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2775 ttyLocker ttyl; |
|
17915
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
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|
2776 tty->print("--- n "); |
|
116
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diff
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|
2777 method->print_short_name(tty); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2778 if (method->is_static()) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2779 tty->print(" (static)"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2780 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2781 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2782 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2783 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2784 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2785 // perform the work while holding the lock, but perform any printing |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2786 // outside the lock |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2787 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2788 // See if somebody beat us to it |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2789 nm = method->code(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2790 if (nm) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2791 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2792 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2793 |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2794 ResourceMark rm; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2795 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2796 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2797 if (buf != NULL) { |
| 1748 | 2798 CodeBuffer buffer(buf); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2799 // Need a few relocation entries |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2800 double locs_buf[20]; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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parents:
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diff
changeset
|
2801 buffer.insts()->initialize_shared_locs( |
|
116
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62
diff
changeset
|
2802 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
742
45463a04ca27
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|
2803 MacroAssembler _masm(&buffer); |
|
116
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diff
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|
2804 |
|
742
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diff
changeset
|
2805 // Generate the compiled-to-native wrapper code |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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710
diff
changeset
|
2806 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
|
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|
2807 } |
|
116
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diff
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|
2808 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2809 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2810 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2811 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2812 // 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
|
2813 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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62
diff
changeset
|
2814 typeArrayOop jlsValue = java_lang_String::value(src); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2815 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
|
2816 int jlsLen = java_lang_String::length(src); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2817 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
|
2818 jlsValue->char_at_addr(jlsOffset); |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6796
diff
changeset
|
2819 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
116
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diff
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|
2820 (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
kamg
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62
diff
changeset
|
2821 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2822 #endif // ndef HAVE_DTRACE_H |
|
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62
diff
changeset
|
2823 |
|
14418
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2824 int SharedRuntime::convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt) { |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2825 int argcnt = in_args_count; |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2826 if (CCallingConventionRequiresIntsAsLongs) { |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2827 for (int in = 0; in < in_args_count; in++) { |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2828 BasicType bt = in_sig_bt[in]; |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2829 switch (bt) { |
|
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|
2830 case T_BOOLEAN: |
|
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|
2831 case T_CHAR: |
|
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|
2832 case T_BYTE: |
|
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|
2833 case T_SHORT: |
|
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|
2834 case T_INT: |
|
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|
2835 argcnt++; |
|
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|
2836 break; |
|
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|
2837 default: |
|
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|
2838 break; |
|
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|
2839 } |
|
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|
2840 } |
|
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|
2841 } else { |
|
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diff
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|
2842 assert(0, "This should not be needed on this platform"); |
|
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|
2843 } |
|
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|
2844 |
|
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|
2845 return argcnt; |
|
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|
2846 } |
|
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|
2847 |
|
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|
2848 void SharedRuntime::convert_ints_to_longints(int i2l_argcnt, int& in_args_count, |
|
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|
2849 BasicType*& in_sig_bt, VMRegPair*& in_regs) { |
|
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|
2850 if (CCallingConventionRequiresIntsAsLongs) { |
|
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|
2851 VMRegPair *new_in_regs = NEW_RESOURCE_ARRAY(VMRegPair, i2l_argcnt); |
|
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|
2852 BasicType *new_in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, i2l_argcnt); |
|
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|
2853 |
|
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|
2854 int argcnt = 0; |
|
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|
2855 for (int in = 0; in < in_args_count; in++, argcnt++) { |
|
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|
2856 BasicType bt = in_sig_bt[in]; |
|
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|
2857 VMRegPair reg = in_regs[in]; |
|
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|
2858 switch (bt) { |
|
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|
2859 case T_BOOLEAN: |
|
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|
2860 case T_CHAR: |
|
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|
2861 case T_BYTE: |
|
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|
2862 case T_SHORT: |
|
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|
2863 case T_INT: |
|
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|
2864 // Convert (bt) to (T_LONG,bt). |
|
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|
2865 new_in_sig_bt[argcnt ] = T_LONG; |
|
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|
2866 new_in_sig_bt[argcnt+1] = bt; |
|
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|
2867 assert(reg.first()->is_valid() && !reg.second()->is_valid(), ""); |
|
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|
2868 new_in_regs[argcnt ].set2(reg.first()); |
|
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|
2869 new_in_regs[argcnt+1].set_bad(); |
|
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|
2870 argcnt++; |
|
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|
2871 break; |
|
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|
2872 default: |
|
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|
2873 // No conversion needed. |
|
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|
2874 new_in_sig_bt[argcnt] = bt; |
|
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|
2875 new_in_regs[argcnt] = reg; |
|
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|
2876 break; |
|
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diff
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|
2877 } |
|
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diff
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|
2878 } |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2879 assert(argcnt == i2l_argcnt, "must match"); |
|
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diff
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|
2880 |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
changeset
|
2881 in_regs = new_in_regs; |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2882 in_sig_bt = new_in_sig_bt; |
|
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|
2883 in_args_count = i2l_argcnt; |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2884 } else { |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
changeset
|
2885 assert(0, "This should not be needed on this platform"); |
|
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|
2886 } |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2887 } |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2888 |
| 0 | 2889 // ------------------------------------------------------------------------- |
| 2890 // Java-Java calling convention | |
| 2891 // (what you use when Java calls Java) | |
| 2892 | |
| 2893 //------------------------------name_for_receiver---------------------------------- | |
| 2894 // For a given signature, return the VMReg for parameter 0. | |
| 2895 VMReg SharedRuntime::name_for_receiver() { | |
| 2896 VMRegPair regs; | |
| 2897 BasicType sig_bt = T_OBJECT; | |
| 2898 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2899 // Return argument 0 register. In the LP64 build pointers | |
| 2900 // take 2 registers, but the VM wants only the 'main' name. | |
| 2901 return regs.first(); | |
| 2902 } | |
| 2903 | |
| 10390 | 2904 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
| 0 | 2905 // This method is returning a data structure allocating as a |
| 2906 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2907 char *s = sig->as_C_string(); | |
| 2908 int len = (int)strlen(s); | |
|
10973
ef57c43512d6
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diff
changeset
|
2909 s++; len--; // Skip opening paren |
| 0 | 2910 char *t = s+len; |
| 2911 while( *(--t) != ')' ) ; // Find close paren | |
| 2912 | |
| 2913 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2914 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2915 int cnt = 0; | |
|
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diff
changeset
|
2916 if (has_receiver) { |
| 0 | 2917 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2918 } | |
| 2919 | |
| 2920 while( s < t ) { | |
| 2921 switch( *s++ ) { // Switch on signature character | |
| 2922 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2923 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2924 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2925 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2926 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2927 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2928 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2929 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2930 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2931 case 'L': // Oop | |
| 2932 while( *s++ != ';' ) ; // Skip signature | |
| 2933 sig_bt[cnt++] = T_OBJECT; | |
| 2934 break; | |
| 2935 case '[': { // Array | |
| 2936 do { // Skip optional size | |
| 2937 while( *s >= '0' && *s <= '9' ) s++; | |
| 2938 } while( *s++ == '[' ); // Nested arrays? | |
| 2939 // Skip element type | |
| 2940 if( s[-1] == 'L' ) | |
| 2941 while( *s++ != ';' ) ; // Skip signature | |
| 2942 sig_bt[cnt++] = T_ARRAY; | |
| 2943 break; | |
| 2944 } | |
| 2945 default : ShouldNotReachHere(); | |
| 2946 } | |
| 2947 } | |
| 10390 | 2948 |
| 2949 if (has_appendix) { | |
| 2950 sig_bt[cnt++] = T_OBJECT; | |
| 2951 } | |
| 2952 | |
| 0 | 2953 assert( cnt < 256, "grow table size" ); |
| 2954 | |
| 2955 int comp_args_on_stack; | |
| 2956 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2957 | |
| 2958 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2959 // we must add that in to get "true" stack offsets. | |
| 2960 | |
| 2961 if (comp_args_on_stack) { | |
| 2962 for (int i = 0; i < cnt; i++) { | |
| 2963 VMReg reg1 = regs[i].first(); | |
| 2964 if( reg1->is_stack()) { | |
| 2965 // Yuck | |
| 2966 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2967 } | |
| 2968 VMReg reg2 = regs[i].second(); | |
| 2969 if( reg2->is_stack()) { | |
| 2970 // Yuck | |
| 2971 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2972 } | |
| 2973 regs[i].set_pair(reg2, reg1); | |
| 2974 } | |
| 2975 } | |
| 2976 | |
| 2977 // results | |
| 2978 *arg_size = cnt; | |
| 2979 return regs; | |
| 2980 } | |
| 2981 | |
| 2982 // OSR Migration Code | |
| 2983 // | |
| 2984 // This code is used convert interpreter frames into compiled frames. It is | |
| 2985 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2986 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2987 // active locks are inflated to allow them to move. The displaced headers and | |
| 2988 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2989 // back to the compiled code. The compiled code then pops the current | |
| 2990 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2991 // copies the interpreter locals and displaced headers where it wants. | |
| 2992 // Finally it calls back to free the temp buffer. | |
| 2993 // | |
| 2994 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2995 | |
| 2996 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2997 | |
| 2998 // | |
| 2999 // This code is dependent on the memory layout of the interpreter local | |
| 3000 // array and the monitors. On all of our platforms the layout is identical | |
| 3001 // so this code is shared. If some platform lays the their arrays out | |
| 3002 // differently then this code could move to platform specific code or | |
| 3003 // the code here could be modified to copy items one at a time using | |
| 3004 // frame accessor methods and be platform independent. | |
| 3005 | |
| 3006 frame fr = thread->last_frame(); | |
| 3007 assert( fr.is_interpreted_frame(), "" ); | |
| 3008 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 3009 | |
| 3010 // Figure out how many monitors are active. | |
| 3011 int active_monitor_count = 0; | |
| 3012 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 3013 kptr < fr.interpreter_frame_monitor_begin(); | |
| 3014 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 3015 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 3016 } | |
| 3017 | |
| 3018 // QQQ we could place number of active monitors in the array so that compiled code | |
| 3019 // could double check it. | |
| 3020 | |
|
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|
3021 Method* moop = fr.interpreter_frame_method(); |
| 0 | 3022 int max_locals = moop->max_locals(); |
| 3023 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 3024 int buf_size_words = max_locals + active_monitor_count*2; | |
| 6197 | 3025 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
| 0 | 3026 |
| 3027 // Copy the locals. Order is preserved so that loading of longs works. | |
| 3028 // Since there's no GC I can copy the oops blindly. | |
| 3029 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 3030 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 3031 (HeapWord*)&buf[0], |
| 3032 max_locals); | |
| 3033 | |
| 3034 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 3035 int i = max_locals; | |
| 3036 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 3037 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 3038 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 3039 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 3040 BasicLock *lock = kptr2->lock(); | |
| 3041 // Inflate so the displaced header becomes position-independent | |
| 3042 if (lock->displaced_header()->is_unlocked()) | |
| 3043 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 3044 // Now the displaced header is free to move | |
| 3045 buf[i++] = (intptr_t)lock->displaced_header(); | |
|
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|
3046 buf[i++] = cast_from_oop<intptr_t>(kptr2->obj()); |
| 0 | 3047 } |
| 3048 } | |
| 3049 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 3050 | |
| 3051 return buf; | |
| 3052 JRT_END | |
| 3053 | |
| 3054 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 6197 | 3055 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
| 0 | 3056 JRT_END |
| 3057 | |
| 3058 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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|
3059 AdapterHandlerTableIterator iter(_adapters); |
|
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diff
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|
3060 while (iter.has_next()) { |
|
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diff
changeset
|
3061 AdapterHandlerEntry* a = iter.next(); |
|
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diff
changeset
|
3062 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 3063 } |
| 3064 return false; | |
| 3065 } | |
| 3066 | |
|
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|
3067 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
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|
3068 AdapterHandlerTableIterator iter(_adapters); |
|
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diff
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|
3069 while (iter.has_next()) { |
|
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diff
changeset
|
3070 AdapterHandlerEntry* a = iter.next(); |
|
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3071 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
|
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3072 st->print("Adapter for signature: "); |
|
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3073 a->print_adapter_on(tty); |
| 0 | 3074 return; |
| 3075 } | |
| 3076 } | |
| 3077 assert(false, "Should have found handler"); | |
| 3078 } | |
|
1187
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3079 |
|
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3080 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
|
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3081 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
|
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3082 (intptr_t) this, fingerprint()->as_string(), |
|
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3083 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
|
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3084 |
|
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|
3085 } |
|
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|
3086 |
|
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|
3087 #ifndef PRODUCT |
|
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|
3088 |
|
1187
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|
3089 void AdapterHandlerLibrary::print_statistics() { |
|
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|
3090 _adapters->print_statistics(); |
|
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|
3091 } |
|
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|
3092 |
| 0 | 3093 #endif /* PRODUCT */ |