Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 4a1b4400bb1f d3f3f7677537 |
| children | a560c9b81f0f |
| 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 assert(thread->frames_to_pop_failed_realloc() == 0 || Interpreter::contains(return_address), "missed frames to pop?"); |
|
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486 |
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487 // Reset method handle flag. |
|
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488 thread->set_is_method_handle_return(false); |
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489 |
|
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490 #ifdef GRAAL |
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491 // Graal's ExceptionHandlerStub expects the thread local exception PC to be clear |
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492 // and other exception handler continuations do not read it |
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493 thread->set_exception_pc(NULL); |
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494 #endif |
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495 |
|
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496 // The fastest case first |
| 0 | 497 CodeBlob* blob = CodeCache::find_blob(return_address); |
|
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498 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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499 if (nm != NULL) { |
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500 // Set flag if return address is a method handle call site. |
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501 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
| 0 | 502 // native nmethods don't have exception handlers |
|
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503 assert(!nm->is_native_method(), "no exception handler"); |
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504 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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505 if (nm->is_deopt_pc(return_address)) { |
|
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506 // If we come here because of a stack overflow, the stack may be |
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507 // unguarded. Reguard the stack otherwise if we return to the |
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508 // deopt blob and the stack bang causes a stack overflow we |
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509 // crash. |
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510 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); |
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511 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); |
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512 assert(guard_pages_enabled, "stack banging in deopt blob may cause crash"); |
| 0 | 513 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
| 514 } else { | |
|
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515 return nm->exception_begin(); |
| 0 | 516 } |
| 517 } | |
| 518 | |
| 519 // Entry code | |
| 520 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 521 return StubRoutines::catch_exception_entry(); | |
| 522 } | |
| 523 // Interpreted code | |
| 524 if (Interpreter::contains(return_address)) { | |
| 525 return Interpreter::rethrow_exception_entry(); | |
| 526 } | |
| 527 | |
|
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528 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
| 0 | 529 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
|
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530 |
| 0 | 531 #ifndef PRODUCT |
| 532 { ResourceMark rm; | |
| 533 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 534 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 535 tty->print_cr("b) other problem"); | |
| 536 } | |
| 537 #endif // PRODUCT | |
|
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538 |
| 0 | 539 ShouldNotReachHere(); |
| 540 return NULL; | |
| 541 } | |
| 542 | |
| 543 | |
| 1295 | 544 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 545 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 546 JRT_END |
| 547 | |
| 1295 | 548 |
| 0 | 549 address SharedRuntime::get_poll_stub(address pc) { |
| 550 address stub; | |
| 551 // Look up the code blob | |
| 552 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 553 | |
| 554 // Should be an nmethod | |
| 555 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 556 | |
| 557 // Look up the relocation information | |
| 558 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 559 "safepoint polling: type must be poll" ); | |
| 560 | |
| 561 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 562 "Only polling locations are used for safepoint"); | |
| 563 | |
| 564 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
|
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565 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
| 0 | 566 if (at_poll_return) { |
| 567 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 568 "polling page return stub not created yet"); | |
| 1748 | 569 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
|
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570 } else if (has_wide_vectors) { |
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571 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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572 "polling page vectors safepoint stub not created yet"); |
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573 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
| 0 | 574 } else { |
| 575 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 576 "polling page safepoint stub not created yet"); | |
| 1748 | 577 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 578 } |
| 579 #ifndef PRODUCT | |
| 580 if( TraceSafepoint ) { | |
| 581 char buf[256]; | |
| 582 jio_snprintf(buf, sizeof(buf), | |
| 583 "... found polling page %s exception at pc = " | |
| 584 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 585 at_poll_return ? "return" : "loop", | |
| 586 (intptr_t)pc, (intptr_t)stub); | |
| 587 tty->print_raw_cr(buf); | |
| 588 } | |
| 589 #endif // PRODUCT | |
| 590 return stub; | |
| 591 } | |
| 592 | |
| 593 | |
|
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594 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 595 assert(caller.is_interpreted_frame(), ""); |
| 596 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 597 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
|
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598 oop result = cast_to_oop(*caller.interpreter_frame_tos_at(args_size - 1)); |
| 0 | 599 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); |
| 600 return result; | |
| 601 } | |
| 602 | |
| 603 | |
| 604 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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605 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 606 vframeStream vfst(thread, true); |
| 607 methodHandle method = methodHandle(thread, vfst.method()); | |
| 608 address bcp = method()->bcp_from(vfst.bci()); | |
| 609 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 610 } | |
| 611 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 612 } | |
| 613 | |
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614 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 615 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 616 throw_and_post_jvmti_exception(thread, h_exception); | |
| 617 } | |
| 618 | |
|
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619 // The interpreter code to call this tracing function is only |
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620 // called/generated when TraceRedefineClasses has the right bits |
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621 // set. Since obsolete methods are never compiled, we don't have |
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622 // to modify the compilers to generate calls to this function. |
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623 // |
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624 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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625 JavaThread* thread, Method* method)) |
|
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626 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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627 |
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628 if (method->is_obsolete()) { |
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629 // We are calling an obsolete method, but this is not necessarily |
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630 // an error. Our method could have been redefined just after we |
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631 // fetched the Method* from the constant pool. |
|
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632 |
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633 // RC_TRACE macro has an embedded ResourceMark |
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634 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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635 ("calling obsolete method '%s'", |
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636 method->name_and_sig_as_C_string())); |
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637 if (RC_TRACE_ENABLED(0x00002000)) { |
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638 // this option is provided to debug calls to obsolete methods |
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639 guarantee(false, "faulting at call to an obsolete method."); |
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640 } |
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641 } |
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642 return 0; |
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643 JRT_END |
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644 |
| 0 | 645 // ret_pc points into caller; we are returning caller's exception handler |
| 646 // for given exception | |
| 647 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 648 bool force_unwind, bool top_frame_only) { | |
| 649 assert(nm != NULL, "must exist"); | |
| 650 ResourceMark rm; | |
| 651 | |
|
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652 #ifdef GRAAL |
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653 if (nm->is_compiled_by_graal()) { |
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654 // lookup exception handler for this pc |
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655 int catch_pco = ret_pc - nm->code_begin(); |
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656 ExceptionHandlerTable table(nm); |
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657 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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658 if (t != NULL) { |
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659 return nm->code_begin() + t->pco(); |
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660 } else { |
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661 // there is no exception handler for this pc => deoptimize |
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662 nm->make_not_entrant(); |
|
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4a1b4400bb1f
SharedRuntime::compute_compiled_exc_handler: explain why it seems that we deoptimzie twice, use Deoptimization::deoptimize since we already have our hands on the frame.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
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|
663 |
|
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Gilles Duboscq <duboscq@ssw.jku.at>
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|
664 // Use Deoptimization::deoptimize for all of its side-effects: |
|
4a1b4400bb1f
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Gilles Duboscq <duboscq@ssw.jku.at>
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|
665 // revoking biases of monitors, gathering traps statistics, logging... |
|
4a1b4400bb1f
SharedRuntime::compute_compiled_exc_handler: explain why it seems that we deoptimzie twice, use Deoptimization::deoptimize since we already have our hands on the frame.
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|
666 // it also patches the return pc but we do not care about that |
|
4a1b4400bb1f
SharedRuntime::compute_compiled_exc_handler: explain why it seems that we deoptimzie twice, use Deoptimization::deoptimize since we already have our hands on the frame.
Gilles Duboscq <duboscq@ssw.jku.at>
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diff
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|
667 // since we return a continuation to the deopt_blob below. |
|
7154
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Doug Simon <doug.simon@oracle.com>
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|
668 JavaThread* thread = JavaThread::current(); |
|
18405
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|
669 RegisterMap reg_map(thread, UseBiasedLocking); |
|
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|
670 frame runtime_frame = thread->last_frame(); |
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|
671 frame caller_frame = runtime_frame.sender(®_map); |
|
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Gilles Duboscq <duboscq@ssw.jku.at>
parents:
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diff
changeset
|
672 Deoptimization::deoptimize(thread, caller_frame, ®_map, Deoptimization::Reason_not_compiled_exception_handler); |
|
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SharedRuntime::compute_compiled_exc_handler: explain why it seems that we deoptimzie twice, use Deoptimization::deoptimize since we already have our hands on the frame.
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|
673 |
|
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|
674 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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675 } |
|
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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676 } |
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|
677 #endif |
|
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|
678 |
| 0 | 679 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
| 680 // determine handler bci, if any | |
| 681 EXCEPTION_MARK; | |
| 682 | |
| 683 int handler_bci = -1; | |
| 684 int scope_depth = 0; | |
| 685 if (!force_unwind) { | |
| 686 int bci = sd->bci(); | |
|
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|
687 bool recursive_exception = false; |
| 0 | 688 do { |
| 689 bool skip_scope_increment = false; | |
| 690 // exception handler lookup | |
| 691 KlassHandle ek (THREAD, exception->klass()); | |
|
7469
0c8717a92b2d
8001341: SIGSEGV in methodOopDesc::fast_exception_handler_bci_for(KlassHandle,int,Thread*)+0x3e9.
jiangli
parents:
7199
diff
changeset
|
692 methodHandle mh(THREAD, sd->method()); |
|
0c8717a92b2d
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jiangli
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|
693 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
| 0 | 694 if (HAS_PENDING_EXCEPTION) { |
|
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|
695 recursive_exception = true; |
| 0 | 696 // We threw an exception while trying to find the exception handler. |
| 697 // Transfer the new exception to the exception handle which will | |
| 698 // be set into thread local storage, and do another lookup for an | |
| 699 // exception handler for this exception, this time starting at the | |
| 700 // BCI of the exception handler which caused the exception to be | |
| 701 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 702 // argument to ensure that the correct exception is thrown (4870175). | |
| 703 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 704 CLEAR_PENDING_EXCEPTION; | |
| 705 if (handler_bci >= 0) { | |
| 706 bci = handler_bci; | |
| 707 handler_bci = -1; | |
| 708 skip_scope_increment = true; | |
| 709 } | |
| 710 } | |
|
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|
711 else { |
|
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712 recursive_exception = false; |
|
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|
713 } |
| 0 | 714 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
| 715 sd = sd->sender(); | |
| 716 if (sd != NULL) { | |
| 717 bci = sd->bci(); | |
| 718 } | |
| 719 ++scope_depth; | |
| 720 } | |
|
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|
721 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
| 0 | 722 } |
| 723 | |
| 724 // found handling method => lookup exception handler | |
| 1748 | 725 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 726 |
| 727 ExceptionHandlerTable table(nm); | |
| 728 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 729 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 730 // Allow abbreviated catch tables. The idea is to allow a method | |
| 731 // to materialize its exceptions without committing to the exact | |
| 732 // routing of exceptions. In particular this is needed for adding | |
| 733 // a synthethic handler to unlock monitors when inlining | |
| 734 // synchonized methods since the unlock path isn't represented in | |
| 735 // the bytecodes. | |
| 736 t = table.entry_for(catch_pco, -1, 0); | |
| 737 } | |
| 738 | |
|
1378
9f5b60a14736
6939930: exception unwind changes in 6919934 hurts compilation speed
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parents:
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diff
changeset
|
739 #ifdef COMPILER1 |
|
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diff
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|
740 if (t == NULL && nm->is_compiled_by_c1()) { |
|
9f5b60a14736
6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents:
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diff
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|
741 assert(nm->unwind_handler_begin() != NULL, ""); |
|
9f5b60a14736
6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents:
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diff
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|
742 return nm->unwind_handler_begin(); |
|
9f5b60a14736
6939930: exception unwind changes in 6919934 hurts compilation speed
never
parents:
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diff
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|
743 } |
|
9f5b60a14736
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never
parents:
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diff
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|
744 #endif |
|
9f5b60a14736
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|
745 |
| 0 | 746 if (t == NULL) { |
| 747 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 748 tty->print_cr(" Exception:"); | |
| 749 exception->print(); | |
| 750 tty->cr(); | |
| 751 tty->print_cr(" Compiled exception table :"); | |
| 752 table.print(); | |
| 753 nm->print_code(); | |
| 754 guarantee(false, "missing exception handler"); | |
| 755 return NULL; | |
| 756 } | |
| 757 | |
| 1748 | 758 return nm->code_begin() + t->pco(); |
| 0 | 759 } |
| 760 | |
| 761 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 762 // These errors occur only at call sites | |
| 763 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 764 JRT_END | |
| 765 | |
|
16
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|
766 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
|
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dcubed
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diff
changeset
|
767 // These errors occur only at call sites |
|
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diff
changeset
|
768 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
|
f8236e79048a
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dcubed
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diff
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|
769 JRT_END |
|
f8236e79048a
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diff
changeset
|
770 |
| 0 | 771 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 772 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 773 JRT_END | |
| 774 | |
| 775 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 776 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 777 JRT_END | |
| 778 | |
| 779 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 780 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 781 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 782 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 783 JRT_END | |
| 784 | |
| 785 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 786 // We avoid using the normal exception construction in this case because | |
| 787 // it performs an upcall to Java, and we're already out of stack space. | |
|
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|
788 Klass* k = SystemDictionary::StackOverflowError_klass(); |
|
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|
789 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
| 0 | 790 Handle exception (thread, exception_oop); |
| 791 if (StackTraceInThrowable) { | |
| 792 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 793 } | |
| 794 throw_and_post_jvmti_exception(thread, exception); | |
| 795 JRT_END | |
| 796 | |
|
5124
837a304d0ca8
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Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
797 #ifdef GRAAL |
|
5111
422c979ff392
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Christian Haeubl <christian.haeubl@oracle.com>
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diff
changeset
|
798 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>
parents:
5110
diff
changeset
|
799 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
| 10409 | 800 thread->set_graal_implicit_exception_pc(pc); |
|
8337
37977d1dcedc
Transmit deoptimization reason in thread local.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
8151
diff
changeset
|
801 thread->set_pending_deoptimization(Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret)); |
|
5111
422c979ff392
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Christian Haeubl <christian.haeubl@oracle.com>
parents:
5110
diff
changeset
|
802 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
|
2607
008adfd6d850
Fixed the stateBefore of invokes and monitorenter instructions to include the arguments of the instruction.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2605
diff
changeset
|
803 } |
|
5124
837a304d0ca8
C1 bugfix, fixed C1 compilation errors
Christian Haeubl <christian.haeubl@oracle.com>
parents:
5111
diff
changeset
|
804 #endif |
|
2607
008adfd6d850
Fixed the stateBefore of invokes and monitorenter instructions to include the arguments of the instruction.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2605
diff
changeset
|
805 |
| 0 | 806 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
| 807 address pc, | |
| 808 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 809 { | |
| 810 address target_pc = NULL; | |
| 811 | |
| 812 if (Interpreter::contains(pc)) { | |
| 813 #ifdef CC_INTERP | |
| 814 // C++ interpreter doesn't throw implicit exceptions | |
| 815 ShouldNotReachHere(); | |
| 816 #else | |
| 817 switch (exception_kind) { | |
| 818 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 819 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 820 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 821 default: ShouldNotReachHere(); | |
| 822 } | |
| 823 #endif // !CC_INTERP | |
| 824 } else { | |
| 825 switch (exception_kind) { | |
| 826 case STACK_OVERFLOW: { | |
| 827 // Stack overflow only occurs upon frame setup; the callee is | |
| 828 // going to be unwound. Dispatch to a shared runtime stub | |
| 829 // which will cause the StackOverflowError to be fabricated | |
| 830 // and processed. | |
|
17980
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
831 // Stack overflow should never occur during deoptimization: |
|
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
832 // the compiled method bangs the stack by as much as the |
|
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
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diff
changeset
|
833 // interpreter would need in case of a deoptimization. The |
|
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
834 // deoptimization blob and uncommon trap blob bang the stack |
|
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
835 // in a debug VM to verify the correctness of the compiled |
|
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
836 // method stack banging. |
|
0bf37f737702
8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9
roland
parents:
17937
diff
changeset
|
837 assert(thread->deopt_mark() == NULL, "no stack overflow from deopt blob/uncommon trap"); |
| 4944 | 838 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
| 0 | 839 return StubRoutines::throw_StackOverflowError_entry(); |
| 840 } | |
| 841 | |
| 842 case IMPLICIT_NULL: { | |
| 843 if (VtableStubs::contains(pc)) { | |
| 844 // We haven't yet entered the callee frame. Fabricate an | |
| 845 // exception and begin dispatching it in the caller. Since | |
| 846 // the caller was at a call site, it's safe to destroy all | |
| 847 // caller-saved registers, as these entry points do. | |
| 848 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
|
465
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
356
diff
changeset
|
849 |
|
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
356
diff
changeset
|
850 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
|
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
356
diff
changeset
|
851 if (vt_stub == NULL) return NULL; |
|
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
356
diff
changeset
|
852 |
| 0 | 853 if (vt_stub->is_abstract_method_error(pc)) { |
| 854 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 4944 | 855 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
| 0 | 856 return StubRoutines::throw_AbstractMethodError_entry(); |
| 857 } else { | |
| 4944 | 858 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
| 0 | 859 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 860 } | |
| 861 } else { | |
| 862 CodeBlob* cb = CodeCache::find_blob(pc); | |
|
465
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
356
diff
changeset
|
863 |
|
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
356
diff
changeset
|
864 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
|
dc16daa0329d
6739363: Xcheck jni doesn't check native function arguments
poonam
parents:
356
diff
changeset
|
865 if (cb == NULL) return NULL; |
| 0 | 866 |
| 867 // Exception happened in CodeCache. Must be either: | |
| 868 // 1. Inline-cache check in C2I handler blob, | |
| 869 // 2. Inline-cache check in nmethod, or | |
| 870 // 3. Implict null exception in nmethod | |
| 871 | |
| 872 if (!cb->is_nmethod()) { | |
| 11029 | 873 bool is_in_blob = cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(); |
| 874 if (!is_in_blob) { | |
|
16718
4703a9442f3f
Do normal crash reporting when encountering unexpected SEGV
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
16179
diff
changeset
|
875 // Allow normal crash reporting to handle this |
|
4703a9442f3f
Do normal crash reporting when encountering unexpected SEGV
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
16179
diff
changeset
|
876 return NULL; |
| 11029 | 877 } |
| 4944 | 878 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
| 0 | 879 // There is no handler here, so we will simply unwind. |
| 880 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 881 } | |
| 882 | |
| 883 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 884 nmethod* nm = (nmethod*)cb; | |
| 885 if (nm->inlinecache_check_contains(pc)) { | |
| 886 // exception happened inside inline-cache check code | |
| 887 // => the nmethod is not yet active (i.e., the frame | |
| 888 // is not set up yet) => use return address pushed by | |
| 889 // caller => don't push another return address | |
| 4944 | 890 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
| 0 | 891 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 892 } | |
| 893 | |
|
6266
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
changeset
|
894 if (nm->method()->is_method_handle_intrinsic()) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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changeset
|
895 // exception happened inside MH dispatch code, similar to a vtable stub |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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|
896 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
897 return StubRoutines::throw_NullPointerException_at_call_entry(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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|
898 } |
|
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twisti
parents:
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diff
changeset
|
899 |
| 0 | 900 #ifndef PRODUCT |
| 901 _implicit_null_throws++; | |
| 902 #endif | |
|
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4137
diff
changeset
|
903 #ifdef GRAAL |
|
14709
d3225562f0d8
guard implicit exception deopt
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
904 if (nm->is_compiled_by_graal() && nm->pc_desc_at(pc) != NULL) { |
|
d3225562f0d8
guard implicit exception deopt
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
905 // If there's no PcDesc then we'll die way down inside of |
|
d3225562f0d8
guard implicit exception deopt
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
906 // deopt instead of just getting normal error reporting, |
|
d3225562f0d8
guard implicit exception deopt
Tom Rodriguez <tom.rodriguez@oracle.com>
parents:
14518
diff
changeset
|
907 // so only go there if it will succeed. |
|
16179
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
908 return deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
|
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
909 } else { |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
910 #endif |
| 0 | 911 target_pc = nm->continuation_for_implicit_exception(pc); |
|
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
912 #ifdef GRAAL |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
913 } |
|
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4137
diff
changeset
|
914 #endif |
| 1250 | 915 // If there's an unexpected fault, target_pc might be NULL, |
| 916 // in which case we want to fall through into the normal | |
| 917 // error handling code. | |
| 0 | 918 } |
| 919 | |
| 920 break; // fall through | |
| 921 } | |
| 922 | |
| 923 | |
| 924 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 925 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 926 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 927 #ifndef PRODUCT | |
| 928 _implicit_div0_throws++; | |
| 929 #endif | |
|
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4137
diff
changeset
|
930 #ifdef GRAAL |
|
14910
954c9df6ac79
Also crash early for failed SIGFPE implicit exception.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14909
diff
changeset
|
931 if (nm->is_compiled_by_graal() && nm->pc_desc_at(pc) != NULL) { |
|
16179
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
932 return deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
|
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
933 } else { |
|
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
934 #endif |
| 0 | 935 target_pc = nm->continuation_for_implicit_exception(pc); |
|
7154
5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
Doug Simon <doug.simon@oracle.com>
parents:
7125
diff
changeset
|
936 #ifdef GRAAL |
|
1429
abc670a709dc
* -XX:TraceC1X=0...5 controls the native c1x tracing
Lukas Stadler <lukas.stadler@oracle.com>
parents:
1378
diff
changeset
|
937 } |
|
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
4137
diff
changeset
|
938 #endif |
| 1250 | 939 // If there's an unexpected fault, target_pc might be NULL, |
| 940 // in which case we want to fall through into the normal | |
| 941 // error handling code. | |
| 0 | 942 break; // fall through |
| 943 } | |
| 944 | |
| 945 default: ShouldNotReachHere(); | |
| 946 } | |
| 947 | |
| 948 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 949 | |
| 950 if (exception_kind == IMPLICIT_NULL) { | |
|
16179
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
951 #ifndef PRODUCT |
|
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
952 // for AbortVMOnException flag |
|
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
953 Exceptions::debug_check_abort("java.lang.NullPointerException"); |
|
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
954 #endif //PRODUCT |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4807
diff
changeset
|
955 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 956 } else { |
|
16179
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
957 #ifndef PRODUCT |
|
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
958 // for AbortVMOnException flag |
|
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
959 Exceptions::debug_check_abort("java.lang.ArithmeticException"); |
|
05397227b8d4
Fix for debug check abort handling in implicit exception handler
Gilles Duboscq <duboscq@ssw.jku.at>
parents:
14957
diff
changeset
|
960 #endif //PRODUCT |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4807
diff
changeset
|
961 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 962 } |
| 963 return target_pc; | |
| 964 } | |
| 965 | |
| 966 ShouldNotReachHere(); | |
| 967 return NULL; | |
| 968 } | |
| 969 | |
| 970 | |
|
10276
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
971 /** |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
972 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
973 * installed in the native function entry of all native Java methods before |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
974 * they get linked to their actual native methods. |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
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diff
changeset
|
975 * |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
976 * \note |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
977 * This method actually never gets called! The reason is because |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
978 * the interpreter's native entries call NativeLookup::lookup() which |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
979 * throws the exception when the lookup fails. The exception is then |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
980 * caught and forwarded on the return from NativeLookup::lookup() call |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
981 * before the call to the native function. This might change in the future. |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
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diff
changeset
|
982 */ |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
983 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
| 0 | 984 { |
|
10276
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
985 // We return a bad value here to make sure that the exception is |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
986 // forwarded before we look at the return value. |
|
f0bc60565ba8
7196277: JSR 292: Two jck/runtime tests crash on java.lang.invoke.MethodHandle.invokeExact
twisti
parents:
10199
diff
changeset
|
987 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
|
6271
93c71eb28866
7188911: nightly failures after JSR 292 lazy method handle update (round 2)
twisti
parents:
6266
diff
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|
988 } |
|
93c71eb28866
7188911: nightly failures after JSR 292 lazy method handle update (round 2)
twisti
parents:
6266
diff
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|
989 JNI_END |
| 0 | 990 |
| 991 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 992 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 993 } | |
| 994 | |
| 995 | |
| 996 #ifndef PRODUCT | |
| 997 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 998 const frame f = thread->last_frame(); | |
| 999 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 1000 #ifndef PRODUCT | |
| 1001 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 1002 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 1003 #endif // !PRODUCT | |
| 1004 return preserve_this_value; | |
| 1005 JRT_END | |
| 1006 #endif // !PRODUCT | |
| 1007 | |
| 1008 | |
| 1009 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 1010 os::yield_all(attempts); | |
| 1011 JRT_END | |
| 1012 | |
| 1013 | |
| 1014 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
|
8968
e41c32a4d573
Change the register_finalizer stub to not overwrite any registers.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
8337
diff
changeset
|
1015 #ifdef GRAAL |
|
e41c32a4d573
Change the register_finalizer stub to not overwrite any registers.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
8337
diff
changeset
|
1016 if (!obj->klass()->has_finalizer()) { |
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1017 return; |
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1018 } |
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1019 #endif |
| 0 | 1020 assert(obj->is_oop(), "must be a valid oop"); |
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1021 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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1022 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 1023 JRT_END |
| 1024 | |
| 1025 | |
| 1026 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 1027 if (thread != NULL) { | |
| 1028 if (thread->is_Java_thread()) { | |
| 1029 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 1030 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 1031 } | |
| 1032 } | |
| 1033 return 0; | |
| 1034 } | |
| 1035 | |
| 1036 /** | |
| 1037 * This function ought to be a void function, but cannot be because | |
| 1038 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 1039 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 1040 */ | |
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1041 int SharedRuntime::dtrace_object_alloc(oopDesc* o, int size) { |
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1042 return dtrace_object_alloc_base(Thread::current(), o, size); |
| 0 | 1043 } |
| 1044 | |
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1045 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o, int size) { |
| 0 | 1046 assert(DTraceAllocProbes, "wrong call"); |
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1047 Klass* klass = o->klass(); |
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1048 Symbol* name = klass->name(); |
| 4006 | 1049 #ifndef USDT2 |
| 0 | 1050 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 1051 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 4006 | 1052 #else /* USDT2 */ |
| 1053 HOTSPOT_OBJECT_ALLOC( | |
| 1054 get_java_tid(thread), | |
| 1055 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 1056 #endif /* USDT2 */ | |
| 0 | 1057 return 0; |
| 1058 } | |
| 1059 | |
| 1060 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1061 JavaThread* thread, Method* method)) |
| 0 | 1062 assert(DTraceMethodProbes, "wrong call"); |
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1063 Symbol* kname = method->klass_name(); |
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1064 Symbol* name = method->name(); |
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1065 Symbol* sig = method->signature(); |
| 4006 | 1066 #ifndef USDT2 |
| 0 | 1067 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 1068 kname->bytes(), kname->utf8_length(), | |
| 1069 name->bytes(), name->utf8_length(), | |
| 1070 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1071 #else /* USDT2 */ |
| 1072 HOTSPOT_METHOD_ENTRY( | |
| 1073 get_java_tid(thread), | |
| 1074 (char *) kname->bytes(), kname->utf8_length(), | |
| 1075 (char *) name->bytes(), name->utf8_length(), | |
| 1076 (char *) sig->bytes(), sig->utf8_length()); | |
| 1077 #endif /* USDT2 */ | |
| 0 | 1078 return 0; |
| 1079 JRT_END | |
| 1080 | |
| 1081 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1082 JavaThread* thread, Method* method)) |
| 0 | 1083 assert(DTraceMethodProbes, "wrong call"); |
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1084 Symbol* kname = method->klass_name(); |
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1085 Symbol* name = method->name(); |
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1086 Symbol* sig = method->signature(); |
| 4006 | 1087 #ifndef USDT2 |
| 0 | 1088 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 1089 kname->bytes(), kname->utf8_length(), | |
| 1090 name->bytes(), name->utf8_length(), | |
| 1091 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1092 #else /* USDT2 */ |
| 1093 HOTSPOT_METHOD_RETURN( | |
| 1094 get_java_tid(thread), | |
| 1095 (char *) kname->bytes(), kname->utf8_length(), | |
| 1096 (char *) name->bytes(), name->utf8_length(), | |
| 1097 (char *) sig->bytes(), sig->utf8_length()); | |
| 1098 #endif /* USDT2 */ | |
| 0 | 1099 return 0; |
| 1100 JRT_END | |
| 1101 | |
| 1102 | |
| 1103 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 1104 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1105 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 1106 // vtable updates, etc. Caller frame must be compiled. | |
| 1107 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 1108 ResourceMark rm(THREAD); | |
| 1109 | |
| 1110 // last java frame on stack (which includes native call frames) | |
| 1111 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 1112 | |
| 1113 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 1114 } | |
| 1115 | |
| 1116 | |
| 1117 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 1118 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1119 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 1120 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1121 vframeStream& vfst, | |
| 1122 Bytecodes::Code& bc, | |
| 1123 CallInfo& callinfo, TRAPS) { | |
| 1124 Handle receiver; | |
| 1125 Handle nullHandle; //create a handy null handle for exception returns | |
| 1126 | |
| 1127 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1128 | |
| 1129 // Find caller and bci from vframe | |
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1130 methodHandle caller(THREAD, vfst.method()); |
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1131 int bci = vfst.bci(); |
| 0 | 1132 |
| 1133 // Find bytecode | |
| 2142 | 1134 Bytecode_invoke bytecode(caller, bci); |
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1135 bc = bytecode.invoke_code(); |
| 2142 | 1136 int bytecode_index = bytecode.index(); |
| 0 | 1137 |
| 1138 // Find receiver for non-static call | |
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1139 if (bc != Bytecodes::_invokestatic && |
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1140 bc != Bytecodes::_invokedynamic && |
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1141 bc != Bytecodes::_invokehandle) { |
| 0 | 1142 // This register map must be update since we need to find the receiver for |
| 1143 // compiled frames. The receiver might be in a register. | |
| 1144 RegisterMap reg_map2(thread); | |
| 1145 frame stubFrame = thread->last_frame(); | |
| 1146 // Caller-frame is a compiled frame | |
| 1147 frame callerFrame = stubFrame.sender(®_map2); | |
| 1148 | |
| 2142 | 1149 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1150 if (callee.is_null()) { |
| 1151 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1152 } | |
| 1153 // Retrieve from a compiled argument list | |
| 1154 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1155 | |
| 1156 if (receiver.is_null()) { | |
| 1157 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1158 } | |
| 1159 } | |
| 1160 | |
| 1161 // Resolve method. This is parameterized by bytecode. | |
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1162 constantPoolHandle constants(THREAD, caller->constants()); |
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1163 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
| 0 | 1164 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
| 1165 | |
| 1166 #ifdef ASSERT | |
| 1167 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1168 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic && bc != Bytecodes::_invokehandle) { |
| 0 | 1169 assert(receiver.not_null(), "should have thrown exception"); |
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1170 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1171 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
| 0 | 1172 // klass is already loaded |
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1173 KlassHandle static_receiver_klass(THREAD, rk); |
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1174 // Method handle invokes might have been optimized to a direct call |
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1175 // so don't check for the receiver class. |
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1176 // FIXME this weakens the assert too much |
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1177 methodHandle callee = callinfo.selected_method(); |
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1178 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1179 callee->is_method_handle_intrinsic() || |
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1180 callee->is_compiled_lambda_form(), |
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1181 "actual receiver must be subclass of static receiver klass"); |
| 0 | 1182 if (receiver_klass->oop_is_instance()) { |
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1183 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
| 0 | 1184 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1185 receiver_klass()->print(); |
| 0 | 1186 } |
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1187 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
| 0 | 1188 } |
| 1189 } | |
| 1190 #endif | |
| 1191 | |
| 1192 return receiver; | |
| 1193 } | |
| 1194 | |
| 1195 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1196 ResourceMark rm(THREAD); | |
| 1197 // We need first to check if any Java activations (compiled, interpreted) | |
| 1198 // exist on the stack since last JavaCall. If not, we need | |
| 1199 // to get the target method from the JavaCall wrapper. | |
| 1200 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1201 methodHandle callee_method; | |
| 1202 if (vfst.at_end()) { | |
| 1203 // No Java frames were found on stack since we did the JavaCall. | |
| 1204 // Hence the stack can only contain an entry_frame. We need to | |
| 1205 // find the target method from the stub frame. | |
| 1206 RegisterMap reg_map(thread, false); | |
| 1207 frame fr = thread->last_frame(); | |
| 1208 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1209 fr = fr.sender(®_map); | |
| 1210 assert(fr.is_entry_frame(), "must be"); | |
| 1211 // fr is now pointing to the entry frame. | |
| 1212 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1213 } else { | |
| 1214 Bytecodes::Code bc; | |
| 1215 CallInfo callinfo; | |
| 1216 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1217 callee_method = callinfo.selected_method(); | |
| 1218 } | |
| 1219 assert(callee_method()->is_method(), "must be"); | |
| 1220 return callee_method; | |
| 1221 } | |
| 1222 | |
| 1223 // Resolves a call. | |
| 1224 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1225 bool is_virtual, | |
| 1226 bool is_optimized, TRAPS) { | |
| 1227 methodHandle callee_method; | |
| 1228 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1229 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1230 int retry_count = 0; | |
| 1231 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1232 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1233 // If has a pending exception then there is no need to re-try to |
| 1234 // resolve this method. | |
| 1235 // If the method has been redefined, we need to try again. | |
| 1236 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1237 // require that java.lang.Object has been updated. | |
| 1238 | |
| 1239 // It is very unlikely that method is redefined more than 100 times | |
| 1240 // in the middle of resolve. If it is looping here more than 100 times | |
| 1241 // means then there could be a bug here. | |
| 1242 guarantee((retry_count++ < 100), | |
| 1243 "Could not resolve to latest version of redefined method"); | |
| 1244 // method is redefined in the middle of resolve so re-try. | |
| 1245 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1246 } | |
| 1247 } | |
| 1248 return callee_method; | |
| 1249 } | |
| 1250 | |
| 1251 // Resolves a call. The compilers generate code for calls that go here | |
| 1252 // and are patched with the real destination of the call. | |
| 1253 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1254 bool is_virtual, | |
| 1255 bool is_optimized, TRAPS) { | |
| 1256 | |
| 1257 ResourceMark rm(thread); | |
| 1258 RegisterMap cbl_map(thread, false); | |
| 1259 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1260 | |
| 1295 | 1261 CodeBlob* caller_cb = caller_frame.cb(); |
| 1262 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1263 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 13441 | 1264 |
| 0 | 1265 // make sure caller is not getting deoptimized |
| 1266 // and removed before we are done with it. | |
| 1267 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1268 nmethodLocker caller_lock(caller_nm); |
| 0 | 1269 |
| 1270 // determine call info & receiver | |
| 1271 // note: a) receiver is NULL for static calls | |
| 1272 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1273 CallInfo call_info; | |
| 1274 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1275 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1276 call_info, CHECK_(methodHandle())); | |
| 1277 methodHandle callee_method = call_info.selected_method(); | |
| 1278 | |
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1279 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1280 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1281 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1282 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
| 0 | 1283 |
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1284 assert(caller_nm->is_alive(), "It should be alive"); |
| 13441 | 1285 |
| 0 | 1286 #ifndef PRODUCT |
| 1287 // tracing/debugging/statistics | |
| 1288 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1289 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1290 (&_resolve_static_ctr); | |
| 1291 Atomic::inc(addr); | |
| 1292 | |
| 1293 if (TraceCallFixup) { | |
| 1294 ResourceMark rm(thread); | |
| 1295 tty->print("resolving %s%s (%s) call to", | |
| 1296 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1297 Bytecodes::name(invoke_code)); | |
| 1298 callee_method->print_short_name(tty); | |
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1299 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
| 0 | 1300 } |
| 1301 #endif | |
| 1302 | |
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1303 // JSR 292 key invariant: |
| 1295 | 1304 // If the resolved method is a MethodHandle invoke target the call |
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1305 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1306 // leaving the stack in a state unknown to either caller or callee |
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1307 // TODO detune for now but we might need it again |
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1308 // assert(!callee_method->is_compiled_lambda_form() || |
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1309 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
| 1295 | 1310 |
| 0 | 1311 // Compute entry points. This might require generation of C2I converter |
| 1312 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1313 // computation of the entry points is independent of patching the call. We | |
| 1314 // always return the entry-point, but we only patch the stub if the call has | |
| 1315 // not been deoptimized. Return values: For a virtual call this is an | |
| 1316 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1317 // virtual this is just a destination address. | |
| 1318 | |
| 1319 StaticCallInfo static_call_info; | |
| 1320 CompiledICInfo virtual_call_info; | |
| 1321 | |
| 1322 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1323 // we are done patching the code. | |
| 1295 | 1324 nmethod* callee_nm = callee_method->code(); |
| 13441 | 1325 if (callee_nm != NULL && !callee_nm->is_in_use()) { |
| 1326 // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded. | |
| 1327 callee_nm = NULL; | |
| 1328 } | |
| 1295 | 1329 nmethodLocker nl_callee(callee_nm); |
| 0 | 1330 #ifdef ASSERT |
| 1295 | 1331 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1332 #endif |
| 1333 | |
| 1334 if (is_virtual) { | |
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1335 assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check"); |
| 0 | 1336 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); |
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1337 KlassHandle h_klass(THREAD, invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass()); |
| 0 | 1338 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, |
| 1339 is_optimized, static_bound, virtual_call_info, | |
| 1340 CHECK_(methodHandle())); | |
| 1341 } else { | |
| 1342 // static call | |
| 1343 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1344 } | |
| 1345 | |
| 1346 // grab lock, check for deoptimization and potentially patch caller | |
| 1347 { | |
| 1348 MutexLocker ml_patch(CompiledIC_lock); | |
| 1349 | |
| 13441 | 1350 // Lock blocks for safepoint during which both nmethods can change state. |
| 1351 | |
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1352 // Now that we are ready to patch if the Method* was redefined then |
| 0 | 1353 // don't update call site and let the caller retry. |
| 13441 | 1354 // Don't update call site if callee nmethod was unloaded or deoptimized. |
| 1355 // Don't update call site if callee nmethod was replaced by an other nmethod | |
| 1356 // which may happen when multiply alive nmethod (tiered compilation) | |
| 1357 // will be supported. | |
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1358 if (!callee_method->is_old() && |
| 13441 | 1359 (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) { |
| 0 | 1360 #ifdef ASSERT |
| 1361 // We must not try to patch to jump to an already unloaded method. | |
| 1362 if (dest_entry_point != 0) { | |
| 13441 | 1363 CodeBlob* cb = CodeCache::find_blob(dest_entry_point); |
| 1364 assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm), | |
| 1365 "should not call unloaded nmethod"); | |
| 0 | 1366 } |
| 1367 #endif | |
| 1368 if (is_virtual) { | |
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1369 nmethod* nm = callee_nm; |
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1370 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1371 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
| 0 | 1372 if (inline_cache->is_clean()) { |
| 1373 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1374 } | |
| 1375 } else { | |
| 1376 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1377 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1378 } | |
| 1379 } | |
| 1380 | |
| 1381 } // unlock CompiledIC_lock | |
| 1382 | |
| 1383 return callee_method; | |
| 1384 } | |
| 1385 | |
| 1386 | |
| 1387 // Inline caches exist only in compiled code | |
| 1388 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1389 #ifdef ASSERT | |
| 1390 RegisterMap reg_map(thread, false); | |
| 1391 frame stub_frame = thread->last_frame(); | |
| 1392 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1393 frame caller_frame = stub_frame.sender(®_map); | |
| 1394 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
| 1395 #endif /* ASSERT */ | |
| 1396 | |
| 1397 methodHandle callee_method; | |
| 1398 JRT_BLOCK | |
| 1399 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1400 // Return Method* through TLS |
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1401 thread->set_vm_result_2(callee_method()); |
| 0 | 1402 JRT_BLOCK_END |
| 1403 // return compiled code entry point after potential safepoints | |
| 1404 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1405 return callee_method->verified_code_entry(); | |
| 1406 JRT_END | |
| 1407 | |
| 1408 | |
| 1409 // Handle call site that has been made non-entrant | |
| 1410 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1411 // 6243940 We might end up in here if the callee is deoptimized | |
| 1412 // as we race to call it. We don't want to take a safepoint if | |
| 1413 // the caller was interpreted because the caller frame will look | |
| 1414 // interpreted to the stack walkers and arguments are now | |
| 1415 // "compiled" so it is much better to make this transition | |
| 1416 // invisible to the stack walking code. The i2c path will | |
| 1417 // place the callee method in the callee_target. It is stashed | |
| 1418 // there because if we try and find the callee by normal means a | |
| 1419 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1420 RegisterMap reg_map(thread, false); | |
| 1421 frame stub_frame = thread->last_frame(); | |
| 1422 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1423 frame caller_frame = stub_frame.sender(®_map); | |
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1424 |
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1425 if (caller_frame.is_interpreted_frame() || |
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1426 caller_frame.is_entry_frame()) { |
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1427 Method* callee = thread->callee_target(); |
| 0 | 1428 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1429 thread->set_vm_result_2(callee); |
| 0 | 1430 thread->set_callee_target(NULL); |
| 1431 return callee->get_c2i_entry(); | |
| 1432 } | |
| 1433 | |
| 1434 // Must be compiled to compiled path which is safe to stackwalk | |
| 1435 methodHandle callee_method; | |
| 1436 JRT_BLOCK | |
| 1437 // Force resolving of caller (if we called from compiled frame) | |
| 1438 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1439 thread->set_vm_result_2(callee_method()); |
| 0 | 1440 JRT_BLOCK_END |
| 1441 // return compiled code entry point after potential safepoints | |
| 1442 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1443 return callee_method->verified_code_entry(); | |
| 1444 JRT_END | |
| 1445 | |
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1446 // Handle abstract method call |
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1447 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_abstract(JavaThread* thread)) |
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1448 return StubRoutines::throw_AbstractMethodError_entry(); |
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1449 JRT_END |
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1450 |
| 0 | 1451 |
| 1452 // resolve a static call and patch code | |
| 1453 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1454 methodHandle callee_method; | |
| 1455 JRT_BLOCK | |
| 1456 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1457 thread->set_vm_result_2(callee_method()); |
| 0 | 1458 JRT_BLOCK_END |
| 1459 // return compiled code entry point after potential safepoints | |
| 1460 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1461 return callee_method->verified_code_entry(); | |
| 1462 JRT_END | |
| 1463 | |
| 1464 | |
| 1465 // resolve virtual call and update inline cache to monomorphic | |
| 1466 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1467 methodHandle callee_method; | |
| 1468 JRT_BLOCK | |
| 1469 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1470 thread->set_vm_result_2(callee_method()); |
| 0 | 1471 JRT_BLOCK_END |
| 1472 // return compiled code entry point after potential safepoints | |
| 1473 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1474 return callee_method->verified_code_entry(); | |
| 1475 JRT_END | |
| 1476 | |
| 1477 | |
| 1478 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1479 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1480 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1481 methodHandle callee_method; | |
| 1482 JRT_BLOCK | |
| 1483 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1484 thread->set_vm_result_2(callee_method()); |
| 0 | 1485 JRT_BLOCK_END |
| 1486 // return compiled code entry point after potential safepoints | |
| 1487 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1488 return callee_method->verified_code_entry(); | |
| 1489 JRT_END | |
| 1490 | |
| 1491 | |
| 1492 | |
| 1493 | |
| 1494 | |
| 1495 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1496 ResourceMark rm(thread); | |
| 1497 CallInfo call_info; | |
| 1498 Bytecodes::Code bc; | |
| 1499 | |
| 1500 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1501 // receivers for non-static calls | |
| 1502 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1503 CHECK_(methodHandle())); | |
| 1504 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1505 // If we fell thru to below we would think that the site was going megamorphic | |
| 1506 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1507 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1508 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1509 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1510 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1511 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1512 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1513 // | |
| 1514 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1515 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1516 if (TraceCallFixup) { | |
| 1517 RegisterMap reg_map(thread, false); | |
| 1518 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1519 ResourceMark rm(thread); | |
| 1520 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1521 callee_method->print_short_name(tty); | |
| 1522 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1523 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1524 } | |
| 1525 return callee_method; | |
| 1526 } | |
| 1527 | |
| 1528 methodHandle callee_method = call_info.selected_method(); | |
| 1529 | |
| 1530 bool should_be_mono = false; | |
| 1531 | |
| 1532 #ifndef PRODUCT | |
| 1533 Atomic::inc(&_ic_miss_ctr); | |
| 1534 | |
| 1535 // Statistics & Tracing | |
| 1536 if (TraceCallFixup) { | |
| 1537 ResourceMark rm(thread); | |
| 1538 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1539 callee_method->print_short_name(tty); | |
| 1540 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1541 } | |
| 1542 | |
| 1543 if (ICMissHistogram) { | |
| 1544 MutexLocker m(VMStatistic_lock); | |
| 1545 RegisterMap reg_map(thread, false); | |
| 1546 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1547 // produce statistics under the lock | |
| 1548 trace_ic_miss(f.pc()); | |
| 1549 } | |
| 1550 #endif | |
| 1551 | |
| 1552 // install an event collector so that when a vtable stub is created the | |
| 1553 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1554 // event can't be posted when the stub is created as locks are held | |
| 1555 // - instead the event will be deferred until the event collector goes | |
| 1556 // out of scope. | |
| 1557 JvmtiDynamicCodeEventCollector event_collector; | |
| 1558 | |
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1559 // Update inline cache to megamorphic. Skip update if we are called from interpreted. |
| 0 | 1560 { MutexLocker ml_patch (CompiledIC_lock); |
| 1561 RegisterMap reg_map(thread, false); | |
| 1562 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1563 CodeBlob* cb = caller_frame.cb(); | |
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1564 if (cb->is_nmethod()) { |
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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); | |
|
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1707 if (is_static_call) { |
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1708 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); |
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1709 ssc->set_to_clean(); |
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1710 } else { |
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1711 // compiled, dispatched call (which used to call an interpreted method) |
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1712 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
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1713 inline_cache->set_to_clean(); |
| 0 | 1714 } |
| 1715 } | |
| 1716 | |
| 1717 } | |
| 1718 | |
| 1719 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1720 | |
| 1721 | |
| 1722 #ifndef PRODUCT | |
| 1723 Atomic::inc(&_wrong_method_ctr); | |
| 1724 | |
| 1725 if (TraceCallFixup) { | |
| 1726 ResourceMark rm(thread); | |
| 1727 tty->print("handle_wrong_method reresolving call to"); | |
| 1728 callee_method->print_short_name(tty); | |
| 1729 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1730 } | |
| 1731 #endif | |
| 1732 | |
| 1733 return callee_method; | |
| 1734 } | |
| 1735 | |
|
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1736 #ifdef ASSERT |
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1737 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1738 const BasicType* sig_bt, |
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1739 const VMRegPair* regs) { |
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1740 ResourceMark rm; |
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1741 const int total_args_passed = method->size_of_parameters(); |
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1742 const VMRegPair* regs_with_member_name = regs; |
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1743 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1744 |
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1745 const int member_arg_pos = total_args_passed - 1; |
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1746 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1747 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1748 |
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1749 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1750 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1751 |
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1752 for (int i = 0; i < member_arg_pos; i++) { |
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1753 VMReg a = regs_with_member_name[i].first(); |
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1754 VMReg b = regs_without_member_name[i].first(); |
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1755 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1756 } |
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1757 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1758 } |
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1759 #endif |
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1760 |
| 0 | 1761 // --------------------------------------------------------------------------- |
| 1762 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1763 // we were called by a compiled method. However we could have lost a race | |
| 1764 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1765 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1766 // so he no longer calls into the interpreter. |
|
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1767 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1768 Method* moop(method); |
| 0 | 1769 |
| 1770 address entry_point = moop->from_compiled_entry(); | |
| 1771 | |
| 1772 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1773 // been resolved yet, in which case this function will be called from | |
| 1774 // an nmethod that has been patched for deopt and we can ignore the | |
| 1775 // request for a fixup. | |
| 1776 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1777 // is now back to the i2c in that case we don't need to patch and if | |
| 1778 // we did we'd leap into space because the callsite needs to use | |
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1779 // "to interpreter" stub in order to load up the Method*. Don't |
| 0 | 1780 // ask me how I know this... |
| 1781 | |
| 1782 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1783 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1784 return; | |
| 1785 } | |
| 1786 | |
| 1787 // The check above makes sure this is a nmethod. | |
| 1788 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1789 assert(nm, "must be"); | |
| 1790 | |
|
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1791 // Get the return PC for the passed caller PC. |
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1792 address return_pc = caller_pc + frame::pc_return_offset; |
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1793 |
| 0 | 1794 // There is a benign race here. We could be attempting to patch to a compiled |
| 1795 // entry point at the same time the callee is being deoptimized. If that is | |
| 1796 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1797 // call site with the same old data. clear_code will set code() to NULL | |
| 1798 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1799 // to patch. If we hit the window where the callee has a c2i in the | |
| 1800 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1801 // and patch the code with the same old data. Asi es la vida. | |
| 1802 | |
| 1803 if (moop->code() == NULL) return; | |
| 1804 | |
| 1205 | 1805 if (nm->is_in_use()) { |
| 0 | 1806 |
| 1807 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1808 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1809 if (NativeCall::is_call_before(return_pc)) { |
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1810 NativeCall *call = nativeCall_before(return_pc); |
| 0 | 1811 // |
| 1812 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1813 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1814 // see compiled code and attempt to patch the site by calling us. This would | |
| 1815 // then incorrectly convert the call site to optimized and its downhill from | |
| 1816 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1817 // just made a call site that could be megamorphic into a monomorphic site | |
| 1818 // for the rest of its life! Just another racing bug in the life of | |
| 1819 // fixup_callers_callsite ... | |
| 1820 // | |
|
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1821 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1822 iter.next(); |
| 1823 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1824 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1825 if ( typ != relocInfo::static_call_type && | |
| 1826 typ != relocInfo::opt_virtual_call_type && | |
| 1827 typ != relocInfo::static_stub_type) { | |
| 1828 return; | |
| 1829 } | |
| 1830 address destination = call->destination(); | |
| 1831 if (destination != entry_point) { | |
| 1832 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1833 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1834 if (callee == cb || callee->is_adapter_blob()) { | |
| 1835 // static call or optimized virtual | |
| 1836 if (TraceCallFixup) { | |
| 1204 | 1837 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1838 moop->print_short_name(tty); |
| 1839 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1840 } | |
| 1841 call->set_destination_mt_safe(entry_point); | |
| 1842 } else { | |
| 1843 if (TraceCallFixup) { | |
| 1844 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1845 moop->print_short_name(tty); | |
| 1846 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1847 } | |
| 1848 // assert is too strong could also be resolve destinations. | |
| 1849 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1850 } | |
| 1851 } else { | |
| 1852 if (TraceCallFixup) { | |
| 1204 | 1853 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1854 moop->print_short_name(tty); |
| 1855 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1856 } | |
| 1857 } | |
| 1858 } | |
| 1859 } | |
| 1860 IRT_END | |
| 1861 | |
| 1862 | |
| 1863 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1864 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1865 oopDesc* dest, jint dest_pos, | |
| 1866 jint length, | |
| 1867 JavaThread* thread)) { | |
| 1868 #ifndef PRODUCT | |
| 1869 _slow_array_copy_ctr++; | |
| 1870 #endif | |
| 1871 // Check if we have null pointers | |
| 1872 if (src == NULL || dest == NULL) { | |
| 1873 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1874 } | |
| 1875 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1876 // even though the copy_array API also performs dynamic checks to ensure | |
| 1877 // that src and dest are truly arrays (and are conformable). | |
| 1878 // The copy_array mechanism is awkward and could be removed, but | |
| 1879 // the compilers don't call this function except as a last resort, | |
| 1880 // so it probably doesn't matter. | |
| 6983 | 1881 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
| 0 | 1882 (arrayOopDesc*)dest, dest_pos, |
| 1883 length, thread); | |
| 1884 } | |
| 1885 JRT_END | |
| 1886 | |
| 1887 char* SharedRuntime::generate_class_cast_message( | |
| 1888 JavaThread* thread, const char* objName) { | |
| 1889 | |
| 1890 // Get target class name from the checkcast instruction | |
| 1891 vframeStream vfst(thread, true); | |
| 1892 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1893 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 6983 | 1894 Klass* targetKlass = vfst.method()->constants()->klass_at( |
| 1895 cc.index(), thread); | |
| 0 | 1896 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1897 } | |
| 1898 | |
| 1899 char* SharedRuntime::generate_class_cast_message( | |
| 710 | 1900 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1901 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1902 | |
| 53 | 1903 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1904 if (NULL == message) { |
| 53 | 1905 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1906 message = const_cast<char*>(objName); |
| 1907 } else { | |
| 1908 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1909 } | |
| 1910 return message; | |
| 1911 } | |
| 1912 | |
| 1913 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1914 (void) JavaThread::current()->reguard_stack(); | |
| 1915 JRT_END | |
| 1916 | |
| 1917 | |
| 1918 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1919 #ifndef PRODUCT | |
| 1920 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1921 #endif | |
| 1922 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1923 oop obj(_obj); | |
| 1924 #ifndef PRODUCT | |
| 1925 _monitor_enter_ctr++; // monitor enter slow | |
| 1926 #endif | |
| 1927 if (PrintBiasedLockingStatistics) { | |
| 1928 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1929 } | |
| 1930 Handle h_obj(THREAD, obj); | |
| 1931 if (UseBiasedLocking) { | |
| 1932 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1933 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1934 } else { | |
| 1935 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1936 } | |
| 1937 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1938 JRT_END | |
| 1939 | |
| 1940 #ifndef PRODUCT | |
| 1941 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1942 #endif | |
| 1943 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1944 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1945 oop obj(_obj); | |
| 1946 #ifndef PRODUCT | |
| 1947 _monitor_exit_ctr++; // monitor exit slow | |
| 1948 #endif | |
| 1949 Thread* THREAD = JavaThread::current(); | |
| 1950 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1951 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1952 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1953 #undef MIGHT_HAVE_PENDING | |
| 1954 #ifdef MIGHT_HAVE_PENDING | |
| 1955 // Save and restore any pending_exception around the exception mark. | |
| 1956 // While the slow_exit must not throw an exception, we could come into | |
| 1957 // this routine with one set. | |
| 1958 oop pending_excep = NULL; | |
| 1959 const char* pending_file; | |
| 1960 int pending_line; | |
| 1961 if (HAS_PENDING_EXCEPTION) { | |
| 1962 pending_excep = PENDING_EXCEPTION; | |
| 1963 pending_file = THREAD->exception_file(); | |
| 1964 pending_line = THREAD->exception_line(); | |
| 1965 CLEAR_PENDING_EXCEPTION; | |
| 1966 } | |
| 1967 #endif /* MIGHT_HAVE_PENDING */ | |
| 1968 | |
| 1969 { | |
| 1970 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1971 EXCEPTION_MARK; | |
| 1972 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1973 } | |
| 1974 | |
| 1975 #ifdef MIGHT_HAVE_PENDING | |
| 1976 if (pending_excep != NULL) { | |
| 1977 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1978 } | |
| 1979 #endif /* MIGHT_HAVE_PENDING */ | |
| 1980 JRT_END | |
| 1981 | |
| 1982 #ifndef PRODUCT | |
| 1983 | |
| 1984 void SharedRuntime::print_statistics() { | |
| 1985 ttyLocker ttyl; | |
| 1986 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1987 | |
| 1988 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1989 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1990 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1991 | |
| 1992 SharedRuntime::print_ic_miss_histogram(); | |
| 1993 | |
| 1994 if (CountRemovableExceptions) { | |
| 1995 if (_nof_removable_exceptions > 0) { | |
| 1996 Unimplemented(); // this counter is not yet incremented | |
| 1997 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1998 } | |
| 1999 } | |
| 2000 | |
| 2001 // Dump the JRT_ENTRY counters | |
| 2002 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 2003 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 2004 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 2005 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 2006 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 2007 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 2008 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 2009 | |
| 2010 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 2011 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 2012 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 2013 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 2014 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 2015 | |
| 2016 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 2017 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 2018 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 2019 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 2020 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 2021 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 2022 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 2023 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 2024 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 2025 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 2026 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 2027 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 2028 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 2029 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 2030 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 2031 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 2032 | |
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2033 AdapterHandlerLibrary::print_statistics(); |
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2034 |
| 0 | 2035 if (xtty != NULL) xtty->tail("statistics"); |
| 2036 } | |
| 2037 | |
| 2038 inline double percent(int x, int y) { | |
| 2039 return 100.0 * x / MAX2(y, 1); | |
| 2040 } | |
| 2041 | |
| 2042 class MethodArityHistogram { | |
| 2043 public: | |
| 2044 enum { MAX_ARITY = 256 }; | |
| 2045 private: | |
| 2046 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 2047 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 2048 static int _max_arity; // max. arity seen | |
| 2049 static int _max_size; // max. arg size seen | |
| 2050 | |
| 2051 static void add_method_to_histogram(nmethod* nm) { | |
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2052 Method* m = nm->method(); |
| 0 | 2053 ArgumentCount args(m->signature()); |
| 2054 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 2055 int argsize = m->size_of_parameters(); | |
| 2056 arity = MIN2(arity, MAX_ARITY-1); | |
| 2057 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 2058 int count = nm->method()->compiled_invocation_count(); | |
| 2059 _arity_histogram[arity] += count; | |
| 2060 _size_histogram[argsize] += count; | |
| 2061 _max_arity = MAX2(_max_arity, arity); | |
| 2062 _max_size = MAX2(_max_size, argsize); | |
| 2063 } | |
| 2064 | |
| 2065 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 2066 const int N = MIN2(5, n); | |
| 2067 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2068 double sum = 0; | |
| 2069 double weighted_sum = 0; | |
| 2070 int i; | |
| 2071 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 2072 double rest = sum; | |
| 2073 double percent = sum / 100; | |
| 2074 for (i = 0; i <= N; i++) { | |
| 2075 rest -= histo[i]; | |
| 2076 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 2077 } | |
| 2078 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 2079 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 2080 } | |
| 2081 | |
| 2082 void print_histogram() { | |
| 2083 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2084 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 2085 tty->print_cr("\nSame for parameter size (in words):"); | |
| 2086 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 2087 tty->cr(); | |
| 2088 } | |
| 2089 | |
| 2090 public: | |
| 2091 MethodArityHistogram() { | |
| 2092 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 2093 _max_arity = _max_size = 0; | |
| 2094 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 2095 CodeCache::nmethods_do(add_method_to_histogram); | |
| 2096 print_histogram(); | |
| 2097 } | |
| 2098 }; | |
| 2099 | |
| 2100 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2101 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2102 int MethodArityHistogram::_max_arity; | |
| 2103 int MethodArityHistogram::_max_size; | |
| 2104 | |
| 2105 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2106 tty->print_cr("Calls from compiled code:"); | |
| 2107 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2108 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2109 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2110 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2111 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2112 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2113 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2114 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2115 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2116 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2117 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2118 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2119 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2120 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2121 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2122 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2123 tty->cr(); | |
| 2124 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2125 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2126 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2127 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2128 tty->cr(); | |
| 2129 | |
| 2130 MethodArityHistogram h; | |
| 2131 } | |
| 2132 #endif | |
| 2133 | |
| 2134 | |
|
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2135 // A simple wrapper class around the calling convention information |
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2136 // that allows sharing of adapters for the same calling convention. |
| 6197 | 2137 class AdapterFingerPrint : public CHeapObj<mtCode> { |
|
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2138 private: |
|
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2139 enum { |
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2140 _basic_type_bits = 4, |
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2141 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2142 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2143 _compact_int_count = 3 |
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2144 }; |
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2145 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2146 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2147 |
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2148 union { |
|
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2149 int _compact[_compact_int_count]; |
|
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2150 int* _fingerprint; |
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2151 } _value; |
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2152 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2153 // Otherwise _value._fingerprint is the array. |
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2154 |
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2155 // Remap BasicTypes that are handled equivalently by the adapters. |
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2156 // These are correct for the current system but someday it might be |
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2157 // necessary to make this mapping platform dependent. |
|
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2158 static int adapter_encoding(BasicType in) { |
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2159 switch(in) { |
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2160 case T_BOOLEAN: |
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2161 case T_BYTE: |
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2162 case T_SHORT: |
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2163 case T_CHAR: |
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2164 // There are all promoted to T_INT in the calling convention |
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2165 return T_INT; |
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2166 |
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2167 case T_OBJECT: |
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2168 case T_ARRAY: |
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2169 // In other words, we assume that any register good enough for |
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2170 // an int or long is good enough for a managed pointer. |
|
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2171 #ifdef _LP64 |
| 1506 | 2172 return T_LONG; |
|
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2173 #else |
| 1506 | 2174 return T_INT; |
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2175 #endif |
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2176 |
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2177 case T_INT: |
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2178 case T_LONG: |
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2179 case T_FLOAT: |
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2180 case T_DOUBLE: |
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2181 case T_VOID: |
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2182 return in; |
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2183 |
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2184 default: |
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2185 ShouldNotReachHere(); |
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2186 return T_CONFLICT; |
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2187 } |
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2188 } |
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2189 |
|
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2190 public: |
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2191 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
|
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2192 // The fingerprint is based on the BasicType signature encoded |
|
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2193 // into an array of ints with eight entries per int. |
|
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2194 int* ptr; |
|
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2195 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2196 if (len <= _compact_int_count) { |
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2197 assert(_compact_int_count == 3, "else change next line"); |
|
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2198 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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2199 // Storing the signature encoded as signed chars hits about 98% |
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2200 // of the time. |
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2201 _length = -len; |
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2202 ptr = _value._compact; |
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2203 } else { |
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2204 _length = len; |
| 6197 | 2205 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
|
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2206 ptr = _value._fingerprint; |
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2207 } |
|
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|
2208 |
|
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|
2209 // Now pack the BasicTypes with 8 per int |
|
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|
2210 int sig_index = 0; |
|
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|
2211 for (int index = 0; index < len; index++) { |
|
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|
2212 int value = 0; |
|
6266
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|
2213 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
|
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|
2214 int bt = ((sig_index < total_args_passed) |
|
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|
2215 ? adapter_encoding(sig_bt[sig_index++]) |
|
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|
2216 : 0); |
|
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|
2217 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
|
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|
2218 value = (value << _basic_type_bits) | bt; |
|
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|
2219 } |
|
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|
2220 ptr[index] = value; |
|
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|
2221 } |
|
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|
2222 } |
|
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|
2223 |
|
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|
2224 ~AdapterFingerPrint() { |
|
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|
2225 if (_length > 0) { |
| 6197 | 2226 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
|
1187
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|
2227 } |
|
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|
2228 } |
|
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|
2229 |
|
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|
2230 int value(int index) { |
|
1187
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|
2231 if (_length < 0) { |
|
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|
2232 return _value._compact[index]; |
|
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|
2233 } |
|
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|
2234 return _value._fingerprint[index]; |
|
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|
2235 } |
|
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|
2236 int length() { |
|
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|
2237 if (_length < 0) return -_length; |
|
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|
2238 return _length; |
|
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|
2239 } |
|
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|
2240 |
|
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|
2241 bool is_compact() { |
|
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|
2242 return _length <= 0; |
|
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|
2243 } |
|
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diff
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|
2244 |
|
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|
2245 unsigned int compute_hash() { |
|
1207
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|
2246 int hash = 0; |
|
1187
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|
2247 for (int i = 0; i < length(); i++) { |
|
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|
2248 int v = value(i); |
|
1187
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|
2249 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
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|
2250 } |
|
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|
2251 return (unsigned int)hash; |
|
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|
2252 } |
|
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|
2253 |
|
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|
2254 const char* as_string() { |
|
cf0685d550f1
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|
2255 stringStream st; |
|
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|
2256 st.print("0x"); |
|
1187
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|
2257 for (int i = 0; i < length(); i++) { |
|
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|
2258 st.print("%08x", value(i)); |
|
1187
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|
2259 } |
|
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|
2260 return st.as_string(); |
|
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|
2261 } |
|
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|
2262 |
|
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|
2263 bool equals(AdapterFingerPrint* other) { |
|
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|
2264 if (other->_length != _length) { |
|
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|
2265 return false; |
|
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|
2266 } |
|
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|
2267 if (_length < 0) { |
|
6266
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|
2268 assert(_compact_int_count == 3, "else change next line"); |
|
1207
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|
2269 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
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|
2270 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
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|
2271 _value._compact[2] == other->_value._compact[2]; |
|
1187
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|
2272 } else { |
|
cf0685d550f1
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changeset
|
2273 for (int i = 0; i < _length; i++) { |
|
cf0685d550f1
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|
2274 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2275 return false; |
|
cf0685d550f1
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diff
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|
2276 } |
|
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|
2277 } |
|
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diff
changeset
|
2278 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
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|
2279 return true; |
|
cf0685d550f1
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never
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diff
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|
2280 } |
|
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diff
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|
2281 }; |
|
cf0685d550f1
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diff
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|
2282 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2283 |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2284 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
| 6197 | 2285 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
|
1187
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|
2286 friend class AdapterHandlerTableIterator; |
|
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diff
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|
2287 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2288 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2289 |
|
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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|
2290 #ifndef PRODUCT |
|
1187
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diff
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|
2291 static int _lookups; // number of calls to lookup |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2292 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
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|
2293 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
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|
2294 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
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|
2295 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
|
2296 #endif |
|
cf0685d550f1
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parents:
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diff
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|
2297 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2298 AdapterHandlerEntry* bucket(int i) { |
| 6197 | 2299 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
|
1187
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|
2300 } |
|
cf0685d550f1
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diff
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|
2301 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2302 public: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2303 AdapterHandlerTable() |
| 6197 | 2304 : 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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|
2305 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2306 // Create a new entry suitable for insertion in the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2307 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
| 6197 | 2308 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2309 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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diff
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|
2310 return entry; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2311 } |
|
cf0685d550f1
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diff
changeset
|
2312 |
|
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diff
changeset
|
2313 // Insert an entry into the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2314 void add(AdapterHandlerEntry* entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2315 int index = hash_to_index(entry->hash()); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2316 add_entry(index, entry); |
|
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never
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diff
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|
2317 } |
|
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diff
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|
2318 |
|
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|
2319 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
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|
2320 entry->deallocate(); |
| 6197 | 2321 BasicHashtable<mtCode>::free_entry(entry); |
|
1207
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|
2322 } |
|
74c848d437ab
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diff
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|
2323 |
|
1187
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diff
changeset
|
2324 // Find a entry with the same fingerprint if it exists |
|
1207
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|
2325 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
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|
2326 NOT_PRODUCT(_lookups++); |
|
1207
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|
2327 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
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changeset
|
2328 unsigned int hash = fp.compute_hash(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2329 int index = hash_to_index(hash); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2330 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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diff
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|
2331 NOT_PRODUCT(_buckets++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2332 if (e->hash() == hash) { |
|
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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diff
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|
2333 NOT_PRODUCT(_equals++); |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2334 if (fp.equals(e->fingerprint())) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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1257
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changeset
|
2335 #ifndef PRODUCT |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2336 if (fp.is_compact()) _compact++; |
|
cf0685d550f1
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diff
changeset
|
2337 _hits++; |
|
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|
2338 #endif |
|
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|
2339 return e; |
|
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|
2340 } |
|
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|
2341 } |
|
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|
2342 } |
|
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|
2343 return NULL; |
|
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|
2344 } |
|
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|
2345 |
|
1263
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|
2346 #ifndef PRODUCT |
|
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|
2347 void print_statistics() { |
|
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|
2348 ResourceMark rm; |
|
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|
2349 int longest = 0; |
|
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|
2350 int empty = 0; |
|
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|
2351 int total = 0; |
|
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|
2352 int nonempty = 0; |
|
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|
2353 for (int index = 0; index < table_size(); index++) { |
|
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|
2354 int count = 0; |
|
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|
2355 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
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|
2356 count++; |
|
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|
2357 } |
|
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|
2358 if (count != 0) nonempty++; |
|
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|
2359 if (count == 0) empty++; |
|
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|
2360 if (count > longest) longest = count; |
|
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|
2361 total += count; |
|
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|
2362 } |
|
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|
2363 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2364 empty, longest, total, total / (double)nonempty); |
|
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|
2365 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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|
2366 _lookups, _buckets, _equals, _hits, _compact); |
|
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2367 } |
|
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|
2368 #endif |
|
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|
2369 }; |
|
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|
2370 |
|
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|
2371 |
|
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|
2372 #ifndef PRODUCT |
|
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|
2373 |
|
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|
2374 int AdapterHandlerTable::_lookups; |
|
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|
2375 int AdapterHandlerTable::_buckets; |
|
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|
2376 int AdapterHandlerTable::_equals; |
|
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|
2377 int AdapterHandlerTable::_hits; |
|
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|
2378 int AdapterHandlerTable::_compact; |
|
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|
2379 |
|
1681
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|
2380 #endif |
|
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diff
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|
2381 |
|
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|
2382 class AdapterHandlerTableIterator : public StackObj { |
|
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|
2383 private: |
|
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|
2384 AdapterHandlerTable* _table; |
|
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|
2385 int _index; |
|
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|
2386 AdapterHandlerEntry* _current; |
|
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|
2387 |
|
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|
2388 void scan() { |
|
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|
2389 while (_index < _table->table_size()) { |
|
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|
2390 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2391 _index++; |
|
1187
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|
2392 if (a != NULL) { |
|
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|
2393 _current = a; |
|
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|
2394 return; |
|
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|
2395 } |
|
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|
2396 } |
|
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|
2397 } |
|
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|
2398 |
|
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|
2399 public: |
|
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|
2400 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
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|
2401 scan(); |
|
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|
2402 } |
|
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|
2403 bool has_next() { |
|
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|
2404 return _current != NULL; |
|
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|
2405 } |
|
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|
2406 AdapterHandlerEntry* next() { |
|
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|
2407 if (_current != NULL) { |
|
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|
2408 AdapterHandlerEntry* result = _current; |
|
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|
2409 _current = _current->next(); |
|
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|
2410 if (_current == NULL) scan(); |
|
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|
2411 return result; |
|
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|
2412 } else { |
|
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|
2413 return NULL; |
|
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never
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diff
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|
2414 } |
|
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|
2415 } |
|
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|
2416 }; |
|
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|
2417 |
|
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|
2418 |
| 0 | 2419 // --------------------------------------------------------------------------- |
| 2420 // Implementation of AdapterHandlerLibrary | |
|
1187
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|
2421 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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|
2422 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2423 const int AdapterHandlerLibrary_size = 16*K; |
|
742
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|
2424 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
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|
2425 |
|
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|
2426 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
45463a04ca27
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|
2427 // Should be called only when AdapterHandlerLibrary_lock is active. |
|
45463a04ca27
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|
2428 if (_buffer == NULL) // Initialize lazily |
|
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|
2429 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
|
45463a04ca27
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|
2430 return _buffer; |
|
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|
2431 } |
| 0 | 2432 |
| 2433 void AdapterHandlerLibrary::initialize() { | |
|
1187
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|
2434 if (_adapters != NULL) return; |
|
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|
2435 _adapters = new AdapterHandlerTable(); |
| 0 | 2436 |
| 2437 // Create a special handler for abstract methods. Abstract methods | |
| 2438 // 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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|
2439 // throw AbstractMethodError just in case. |
|
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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changeset
|
2440 // 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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|
2441 // AbstractMethodError for invalid invocations. |
|
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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|
2442 address wrong_method_abstract = SharedRuntime::get_handle_wrong_method_abstract_stub(); |
|
1187
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|
2443 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
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|
2444 StubRoutines::throw_AbstractMethodError_entry(), |
|
13382
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|
2445 wrong_method_abstract, wrong_method_abstract); |
| 0 | 2446 } |
| 2447 | |
|
1187
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|
2448 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
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|
2449 address i2c_entry, |
|
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|
2450 address c2i_entry, |
|
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|
2451 address c2i_unverified_entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2452 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2453 } |
|
cf0685d550f1
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|
2454 |
|
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changeset
|
2455 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2456 // Use customized signature handler. Need to lock around updates to |
|
cf0685d550f1
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diff
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|
2457 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
cf0685d550f1
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|
2458 // and a single writer: this could be fixed if it becomes a |
|
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|
2459 // problem). |
| 0 | 2460 |
| 2461 // Get the address of the ic_miss handlers before we grab the | |
| 2462 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2463 // was caused by the initialization of the stubs happening | |
| 2464 // while we held the lock and then notifying jvmti while | |
| 2465 // holding it. This just forces the initialization to be a little | |
| 2466 // earlier. | |
| 2467 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2468 assert(ic_miss != NULL, "must have handler"); | |
| 2469 | |
|
1187
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diff
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|
2470 ResourceMark rm; |
|
cf0685d550f1
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diff
changeset
|
2471 |
| 1748 | 2472 NOT_PRODUCT(int insts_size); |
| 17611 | 2473 AdapterBlob* new_adapter = NULL; |
|
742
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|
2474 AdapterHandlerEntry* entry = NULL; |
|
1187
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|
2475 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2476 { |
| 2477 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2478 // make sure data structure is initialized | |
| 2479 initialize(); | |
| 2480 | |
| 2481 if (method->is_abstract()) { | |
|
1187
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|
2482 return _abstract_method_handler; |
| 0 | 2483 } |
| 2484 | |
|
1187
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|
2485 // Fill in the signature array, for the calling-convention call. |
|
cf0685d550f1
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changeset
|
2486 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2487 |
|
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|
2488 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
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|
2489 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2490 int i = 0; |
|
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diff
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|
2491 if (!method->is_static()) // Pass in receiver first |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2492 sig_bt[i++] = T_OBJECT; |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2493 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
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6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2494 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2495 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2496 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2497 } |
|
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|
2498 assert(i == total_args_passed, ""); |
|
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|
2499 |
|
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|
2500 // Lookup method signature's fingerprint |
|
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|
2501 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
1187
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|
2502 |
|
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|
2503 #ifdef ASSERT |
|
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|
2504 AdapterHandlerEntry* shared_entry = NULL; |
| 17611 | 2505 // Start adapter sharing verification only after the VM is booted. |
| 2506 if (VerifyAdapterSharing && (entry != NULL)) { | |
|
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|
2507 shared_entry = entry; |
|
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|
2508 entry = NULL; |
|
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|
2509 } |
|
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|
2510 #endif |
|
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|
2511 |
|
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|
2512 if (entry != NULL) { |
|
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|
2513 return entry; |
| 0 | 2514 } |
| 2515 | |
|
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|
2516 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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|
2517 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
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|
2518 |
|
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|
2519 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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|
2520 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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|
2521 |
| 17611 | 2522 // StubRoutines::code2() is initialized after this function can be called. As a result, |
| 2523 // VerifyAdapterCalls and VerifyAdapterSharing can fail if we re-use code that generated | |
| 2524 // prior to StubRoutines::code2() being set. Checks refer to checks generated in an I2C | |
| 2525 // stub that ensure that an I2C stub is called from an interpreter frame. | |
| 2526 bool contains_all_checks = StubRoutines::code2() != NULL; | |
| 2527 | |
| 0 | 2528 // Create I2C & C2I handlers |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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diff
changeset
|
2529 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2530 if (buf != NULL) { |
| 1748 | 2531 CodeBuffer buffer(buf); |
|
742
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diff
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|
2532 short buffer_locs[20]; |
|
45463a04ca27
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diff
changeset
|
2533 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
|
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diff
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|
2534 sizeof(buffer_locs)/sizeof(relocInfo)); |
| 17611 | 2535 |
|
742
45463a04ca27
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|
2536 MacroAssembler _masm(&buffer); |
|
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diff
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|
2537 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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diff
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|
2538 total_args_passed, |
|
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710
diff
changeset
|
2539 comp_args_on_stack, |
|
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diff
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|
2540 sig_bt, |
|
1187
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changeset
|
2541 regs, |
|
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|
2542 fingerprint); |
|
1207
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diff
changeset
|
2543 #ifdef ASSERT |
|
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diff
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|
2544 if (VerifyAdapterSharing) { |
|
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diff
changeset
|
2545 if (shared_entry != NULL) { |
| 17611 | 2546 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size()), "code must match"); |
|
1207
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diff
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|
2547 // Release the one just created and return the original |
|
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parents:
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diff
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|
2548 _adapters->free_entry(entry); |
|
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diff
changeset
|
2549 return shared_entry; |
|
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diff
changeset
|
2550 } else { |
| 17611 | 2551 entry->save_code(buf->code_begin(), buffer.insts_size()); |
|
1207
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1205
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|
2552 } |
|
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1205
diff
changeset
|
2553 } |
|
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diff
changeset
|
2554 #endif |
|
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diff
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|
2555 |
| 17611 | 2556 new_adapter = AdapterBlob::create(&buffer); |
| 1748 | 2557 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
742
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diff
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|
2558 } |
| 17611 | 2559 if (new_adapter == NULL) { |
| 28 | 2560 // CodeCache is full, disable compilation |
| 2561 // Ought to log this but compile log is only per compile thread | |
| 2562 // and we're some non descript Java thread. | |
| 1202 | 2563 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2564 CompileBroker::handle_full_code_cache(); | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2565 return NULL; // Out of CodeCache space |
| 28 | 2566 } |
| 17611 | 2567 entry->relocate(new_adapter->content_begin()); |
| 0 | 2568 #ifndef PRODUCT |
| 2569 // debugging suppport | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2570 if (PrintAdapterHandlers || PrintStubCode) { |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2571 ttyLocker ttyl; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2572 entry->print_adapter_on(tty); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2573 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2574 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2575 method->signature()->as_C_string(), insts_size); |
| 0 | 2576 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2577 if (Verbose || PrintStubCode) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2578 address first_pc = entry->base_address(); |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
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6792
diff
changeset
|
2579 if (first_pc != NULL) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2580 Disassembler::decode(first_pc, first_pc + insts_size); |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
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6792
diff
changeset
|
2581 tty->cr(); |
|
b31471cdc53e
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6792
diff
changeset
|
2582 } |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2583 } |
| 0 | 2584 } |
| 2585 #endif | |
| 17611 | 2586 // Add the entry only if the entry contains all required checks (see sharedRuntime_xxx.cpp) |
| 2587 // The checks are inserted only if -XX:+VerifyAdapterCalls is specified. | |
| 2588 if (contains_all_checks || !VerifyAdapterCalls) { | |
| 2589 _adapters->add(entry); | |
| 2590 } | |
| 0 | 2591 } |
| 2592 // Outside of the lock | |
| 17611 | 2593 if (new_adapter != NULL) { |
| 0 | 2594 char blob_id[256]; |
| 2595 jio_snprintf(blob_id, | |
| 2596 sizeof(blob_id), | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2597 "%s(%s)@" PTR_FORMAT, |
| 17611 | 2598 new_adapter->name(), |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2599 fingerprint->as_string(), |
| 17611 | 2600 new_adapter->content_begin()); |
| 2601 Forte::register_stub(blob_id, new_adapter->content_begin(),new_adapter->content_end()); | |
| 0 | 2602 |
| 2603 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 17611 | 2604 JvmtiExport::post_dynamic_code_generated(blob_id, new_adapter->content_begin(), new_adapter->content_end()); |
| 0 | 2605 } |
| 2606 } | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2607 return entry; |
| 0 | 2608 } |
| 2609 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2610 address AdapterHandlerEntry::base_address() { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2611 address base = _i2c_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2612 if (base == NULL) base = _c2i_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2613 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2614 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2615 return base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2616 } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2617 |
| 0 | 2618 void AdapterHandlerEntry::relocate(address new_base) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2619 address old_base = base_address(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2620 assert(old_base != NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2621 ptrdiff_t delta = new_base - old_base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2622 if (_i2c_entry != NULL) |
| 0 | 2623 _i2c_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2624 if (_c2i_entry != NULL) |
| 0 | 2625 _c2i_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2626 if (_c2i_unverified_entry != NULL) |
| 0 | 2627 _c2i_unverified_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2628 assert(base_address() == new_base, ""); |
| 0 | 2629 } |
| 2630 | |
|
1207
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|
2631 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2632 void AdapterHandlerEntry::deallocate() { |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2633 delete _fingerprint; |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2634 #ifdef ASSERT |
| 6197 | 2635 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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|
2636 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2637 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2638 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2639 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2640 #ifdef ASSERT |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2641 // Capture the code before relocation so that it can be compared |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2642 // against other versions. If the code is captured after relocation |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2643 // then relative instructions won't be equivalent. |
| 17611 | 2644 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length) { |
| 6197 | 2645 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
| 17611 | 2646 _saved_code_length = length; |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2647 memcpy(_saved_code, buffer, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2648 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2649 |
|
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diff
changeset
|
2650 |
| 17611 | 2651 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length) { |
| 2652 if (length != _saved_code_length) { | |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2653 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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1205
diff
changeset
|
2654 } |
| 17611 | 2655 |
| 2656 return (memcmp(buffer, _saved_code, length) == 0) ? true : false; | |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2657 } |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2658 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2659 |
|
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diff
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|
2660 |
| 17625 | 2661 /** |
| 2662 * Create a native wrapper for this native method. The wrapper converts the | |
| 2663 * Java-compiled calling convention to the native convention, handles | |
| 2664 * arguments, and transitions to native. On return from the native we transition | |
| 2665 * back to java blocking if a safepoint is in progress. | |
| 2666 */ | |
| 2667 void AdapterHandlerLibrary::create_native_wrapper(methodHandle method) { | |
| 0 | 2668 ResourceMark rm; |
| 2669 nmethod* nm = NULL; | |
| 2670 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2671 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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|
2672 assert(method->is_method_handle_intrinsic() || |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2673 method->has_native_function(), "must have something valid to call!"); |
| 0 | 2674 |
| 2675 { | |
| 17625 | 2676 // Perform the work while holding the lock, but perform any printing outside the lock |
| 0 | 2677 MutexLocker mu(AdapterHandlerLibrary_lock); |
| 2678 // See if somebody beat us to it | |
| 2679 nm = method->code(); | |
| 17625 | 2680 if (nm != NULL) { |
| 2681 return; | |
| 0 | 2682 } |
| 2683 | |
| 17625 | 2684 const int compile_id = CompileBroker::assign_compile_id(method, CompileBroker::standard_entry_bci); |
| 2685 assert(compile_id > 0, "Must generate native wrapper"); | |
| 2686 | |
| 2687 | |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2688 ResourceMark rm; |
|
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|
2689 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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|
2690 if (buf != NULL) { |
| 1748 | 2691 CodeBuffer buffer(buf); |
|
742
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|
2692 double locs_buf[20]; |
|
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|
2693 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
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|
2694 MacroAssembler _masm(&buffer); |
|
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|
2695 |
|
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|
2696 // 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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diff
changeset
|
2697 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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diff
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|
2698 |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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diff
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|
2699 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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|
2700 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
742
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|
2701 int i=0; |
|
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|
2702 if( !method->is_static() ) // Pass in receiver first |
|
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|
2703 sig_bt[i++] = T_OBJECT; |
|
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|
2704 SignatureStream ss(method->signature()); |
|
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|
2705 for( ; !ss.at_return_type(); ss.next()) { |
|
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|
2706 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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|
2707 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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|
2708 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2709 } |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2710 assert(i == total_args_passed, ""); |
|
742
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|
2711 BasicType ret_type = ss.type(); |
|
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|
2712 |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2713 // 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
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changeset
|
2714 // NOTE: Stubs for compiled entry points of method handle intrinsics |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2715 // 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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|
2716 const bool is_outgoing = method->is_method_handle_intrinsic(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2717 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
|
742
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|
2718 |
|
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|
2719 // Generate the compiled-to-native wrapper code |
| 17625 | 2720 nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type); |
| 2721 | |
| 2722 if (nm != NULL) { | |
| 2723 method->set_code(method, nm); | |
| 2724 } | |
| 0 | 2725 } |
| 17625 | 2726 } // Unlock AdapterHandlerLibrary_lock |
| 2727 | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
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1681
diff
changeset
|
2728 |
| 0 | 2729 // Install the generated code. |
| 2730 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2731 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2732 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2733 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
|
2734 } |
| 0 | 2735 nm->post_compiled_method_load_event(); |
| 2736 } else { | |
| 2737 // CodeCache is full, disable compilation | |
| 1202 | 2738 CompileBroker::handle_full_code_cache(); |
| 0 | 2739 } |
| 2740 } | |
| 2741 | |
|
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2742 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
|
2743 assert(thread == JavaThread::current(), "must be"); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2744 // 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
|
2745 // _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
|
2746 // 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
|
2747 // until needs_gc has been cleared. |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2748 if (thread->in_critical()) { |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2749 return; |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2750 } |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2751 // 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
|
2752 GC_locker::lock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
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4872
diff
changeset
|
2753 GC_locker::unlock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2754 JRT_END |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
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|
2755 |
|
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
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|
2756 #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
|
2757 /** |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
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17884
diff
changeset
|
2758 * 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
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17884
diff
changeset
|
2759 * 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
|
2760 * (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
|
2761 * 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
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17884
diff
changeset
|
2762 * leaf, no thread transition is needed. |
|
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
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|
2763 */ |
|
116
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diff
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|
2764 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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|
2765 ResourceMark rm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2766 nmethod* nm = NULL; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2767 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2768 if (PrintCompilation) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2769 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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|
2770 tty->print("--- n "); |
|
116
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|
2771 method->print_short_name(tty); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2772 if (method->is_static()) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2773 tty->print(" (static)"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2774 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2775 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2776 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2777 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2778 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2779 // perform the work while holding the lock, but perform any printing |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2780 // outside the lock |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
changeset
|
2781 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2782 // See if somebody beat us to it |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2783 nm = method->code(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2784 if (nm) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2785 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2786 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2787 |
|
742
45463a04ca27
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changeset
|
2788 ResourceMark rm; |
|
45463a04ca27
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|
2789 |
|
45463a04ca27
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diff
changeset
|
2790 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
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diff
changeset
|
2791 if (buf != NULL) { |
| 1748 | 2792 CodeBuffer buffer(buf); |
|
742
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diff
changeset
|
2793 // Need a few relocation entries |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2794 double locs_buf[20]; |
|
45463a04ca27
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changeset
|
2795 buffer.insts()->initialize_shared_locs( |
|
116
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diff
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|
2796 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
742
45463a04ca27
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|
2797 MacroAssembler _masm(&buffer); |
|
116
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|
2798 |
|
742
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changeset
|
2799 // Generate the compiled-to-native wrapper code |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2800 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
|
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|
2801 } |
|
116
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|
2802 } |
|
018d5b58dd4f
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diff
changeset
|
2803 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2804 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2805 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2806 // 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
|
2807 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
changeset
|
2808 typeArrayOop jlsValue = java_lang_String::value(src); |
|
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|
2809 int jlsOffset = java_lang_String::offset(src); |
|
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2810 int jlsLen = java_lang_String::length(src); |
|
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|
2811 jchar* jlsPos = (jlsLen == 0) ? NULL : |
|
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|
2812 jlsValue->char_at_addr(jlsOffset); |
|
6831
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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|
2813 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
116
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|
2814 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
|
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|
2815 } |
|
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|
2816 #endif // ndef HAVE_DTRACE_H |
|
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|
2817 |
|
14418
cfd05ec74089
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|
2818 int SharedRuntime::convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt) { |
|
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|
2819 int argcnt = in_args_count; |
|
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|
2820 if (CCallingConventionRequiresIntsAsLongs) { |
|
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|
2821 for (int in = 0; in < in_args_count; in++) { |
|
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|
2822 BasicType bt = in_sig_bt[in]; |
|
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|
2823 switch (bt) { |
|
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|
2824 case T_BOOLEAN: |
|
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|
2825 case T_CHAR: |
|
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|
2826 case T_BYTE: |
|
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|
2827 case T_SHORT: |
|
cfd05ec74089
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|
2828 case T_INT: |
|
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|
2829 argcnt++; |
|
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|
2830 break; |
|
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|
2831 default: |
|
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|
2832 break; |
|
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diff
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|
2833 } |
|
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|
2834 } |
|
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|
2835 } else { |
|
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|
2836 assert(0, "This should not be needed on this platform"); |
|
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|
2837 } |
|
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|
2838 |
|
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|
2839 return argcnt; |
|
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|
2840 } |
|
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|
2841 |
|
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|
2842 void SharedRuntime::convert_ints_to_longints(int i2l_argcnt, int& in_args_count, |
|
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|
2843 BasicType*& in_sig_bt, VMRegPair*& in_regs) { |
|
cfd05ec74089
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|
2844 if (CCallingConventionRequiresIntsAsLongs) { |
|
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|
2845 VMRegPair *new_in_regs = NEW_RESOURCE_ARRAY(VMRegPair, i2l_argcnt); |
|
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|
2846 BasicType *new_in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, i2l_argcnt); |
|
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|
2847 |
|
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|
2848 int argcnt = 0; |
|
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|
2849 for (int in = 0; in < in_args_count; in++, argcnt++) { |
|
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|
2850 BasicType bt = in_sig_bt[in]; |
|
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|
2851 VMRegPair reg = in_regs[in]; |
|
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|
2852 switch (bt) { |
|
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|
2853 case T_BOOLEAN: |
|
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|
2854 case T_CHAR: |
|
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|
2855 case T_BYTE: |
|
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|
2856 case T_SHORT: |
|
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|
2857 case T_INT: |
|
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|
2858 // Convert (bt) to (T_LONG,bt). |
|
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|
2859 new_in_sig_bt[argcnt ] = T_LONG; |
|
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|
2860 new_in_sig_bt[argcnt+1] = bt; |
|
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|
2861 assert(reg.first()->is_valid() && !reg.second()->is_valid(), ""); |
|
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|
2862 new_in_regs[argcnt ].set2(reg.first()); |
|
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|
2863 new_in_regs[argcnt+1].set_bad(); |
|
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|
2864 argcnt++; |
|
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|
2865 break; |
|
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|
2866 default: |
|
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|
2867 // No conversion needed. |
|
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|
2868 new_in_sig_bt[argcnt] = bt; |
|
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|
2869 new_in_regs[argcnt] = reg; |
|
cfd05ec74089
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|
2870 break; |
|
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|
2871 } |
|
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|
2872 } |
|
cfd05ec74089
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changeset
|
2873 assert(argcnt == i2l_argcnt, "must match"); |
|
cfd05ec74089
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|
2874 |
|
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|
2875 in_regs = new_in_regs; |
|
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|
2876 in_sig_bt = new_in_sig_bt; |
|
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|
2877 in_args_count = i2l_argcnt; |
|
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|
2878 } else { |
|
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diff
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|
2879 assert(0, "This should not be needed on this platform"); |
|
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|
2880 } |
|
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|
2881 } |
|
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|
2882 |
| 0 | 2883 // ------------------------------------------------------------------------- |
| 2884 // Java-Java calling convention | |
| 2885 // (what you use when Java calls Java) | |
| 2886 | |
| 2887 //------------------------------name_for_receiver---------------------------------- | |
| 2888 // For a given signature, return the VMReg for parameter 0. | |
| 2889 VMReg SharedRuntime::name_for_receiver() { | |
| 2890 VMRegPair regs; | |
| 2891 BasicType sig_bt = T_OBJECT; | |
| 2892 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2893 // Return argument 0 register. In the LP64 build pointers | |
| 2894 // take 2 registers, but the VM wants only the 'main' name. | |
| 2895 return regs.first(); | |
| 2896 } | |
| 2897 | |
| 10390 | 2898 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
| 0 | 2899 // This method is returning a data structure allocating as a |
| 2900 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2901 char *s = sig->as_C_string(); | |
| 2902 int len = (int)strlen(s); | |
|
10973
ef57c43512d6
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10390
diff
changeset
|
2903 s++; len--; // Skip opening paren |
| 0 | 2904 char *t = s+len; |
| 2905 while( *(--t) != ')' ) ; // Find close paren | |
| 2906 | |
| 2907 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2908 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2909 int cnt = 0; | |
|
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diff
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|
2910 if (has_receiver) { |
| 0 | 2911 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2912 } | |
| 2913 | |
| 2914 while( s < t ) { | |
| 2915 switch( *s++ ) { // Switch on signature character | |
| 2916 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2917 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2918 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2919 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2920 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2921 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2922 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2923 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2924 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2925 case 'L': // Oop | |
| 2926 while( *s++ != ';' ) ; // Skip signature | |
| 2927 sig_bt[cnt++] = T_OBJECT; | |
| 2928 break; | |
| 2929 case '[': { // Array | |
| 2930 do { // Skip optional size | |
| 2931 while( *s >= '0' && *s <= '9' ) s++; | |
| 2932 } while( *s++ == '[' ); // Nested arrays? | |
| 2933 // Skip element type | |
| 2934 if( s[-1] == 'L' ) | |
| 2935 while( *s++ != ';' ) ; // Skip signature | |
| 2936 sig_bt[cnt++] = T_ARRAY; | |
| 2937 break; | |
| 2938 } | |
| 2939 default : ShouldNotReachHere(); | |
| 2940 } | |
| 2941 } | |
| 10390 | 2942 |
| 2943 if (has_appendix) { | |
| 2944 sig_bt[cnt++] = T_OBJECT; | |
| 2945 } | |
| 2946 | |
| 0 | 2947 assert( cnt < 256, "grow table size" ); |
| 2948 | |
| 2949 int comp_args_on_stack; | |
| 2950 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2951 | |
| 2952 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2953 // we must add that in to get "true" stack offsets. | |
| 2954 | |
| 2955 if (comp_args_on_stack) { | |
| 2956 for (int i = 0; i < cnt; i++) { | |
| 2957 VMReg reg1 = regs[i].first(); | |
| 2958 if( reg1->is_stack()) { | |
| 2959 // Yuck | |
| 2960 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2961 } | |
| 2962 VMReg reg2 = regs[i].second(); | |
| 2963 if( reg2->is_stack()) { | |
| 2964 // Yuck | |
| 2965 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2966 } | |
| 2967 regs[i].set_pair(reg2, reg1); | |
| 2968 } | |
| 2969 } | |
| 2970 | |
| 2971 // results | |
| 2972 *arg_size = cnt; | |
| 2973 return regs; | |
| 2974 } | |
| 2975 | |
| 2976 // OSR Migration Code | |
| 2977 // | |
| 2978 // This code is used convert interpreter frames into compiled frames. It is | |
| 2979 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2980 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2981 // active locks are inflated to allow them to move. The displaced headers and | |
| 2982 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2983 // back to the compiled code. The compiled code then pops the current | |
| 2984 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2985 // copies the interpreter locals and displaced headers where it wants. | |
| 2986 // Finally it calls back to free the temp buffer. | |
| 2987 // | |
| 2988 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2989 | |
| 2990 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2991 | |
| 2992 // | |
| 2993 // This code is dependent on the memory layout of the interpreter local | |
| 2994 // array and the monitors. On all of our platforms the layout is identical | |
| 2995 // so this code is shared. If some platform lays the their arrays out | |
| 2996 // differently then this code could move to platform specific code or | |
| 2997 // the code here could be modified to copy items one at a time using | |
| 2998 // frame accessor methods and be platform independent. | |
| 2999 | |
| 3000 frame fr = thread->last_frame(); | |
| 3001 assert( fr.is_interpreted_frame(), "" ); | |
| 3002 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 3003 | |
| 3004 // Figure out how many monitors are active. | |
| 3005 int active_monitor_count = 0; | |
| 3006 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 3007 kptr < fr.interpreter_frame_monitor_begin(); | |
| 3008 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 3009 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 3010 } | |
| 3011 | |
| 3012 // QQQ we could place number of active monitors in the array so that compiled code | |
| 3013 // could double check it. | |
| 3014 | |
|
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|
3015 Method* moop = fr.interpreter_frame_method(); |
| 0 | 3016 int max_locals = moop->max_locals(); |
| 3017 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 3018 int buf_size_words = max_locals + active_monitor_count*2; | |
| 6197 | 3019 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
| 0 | 3020 |
| 3021 // Copy the locals. Order is preserved so that loading of longs works. | |
| 3022 // Since there's no GC I can copy the oops blindly. | |
| 3023 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 3024 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 3025 (HeapWord*)&buf[0], |
| 3026 max_locals); | |
| 3027 | |
| 3028 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 3029 int i = max_locals; | |
| 3030 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 3031 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 3032 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 3033 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 3034 BasicLock *lock = kptr2->lock(); | |
| 3035 // Inflate so the displaced header becomes position-independent | |
| 3036 if (lock->displaced_header()->is_unlocked()) | |
| 3037 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 3038 // Now the displaced header is free to move | |
| 3039 buf[i++] = (intptr_t)lock->displaced_header(); | |
|
12316
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|
3040 buf[i++] = cast_from_oop<intptr_t>(kptr2->obj()); |
| 0 | 3041 } |
| 3042 } | |
| 3043 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 3044 | |
| 3045 return buf; | |
| 3046 JRT_END | |
| 3047 | |
| 3048 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 6197 | 3049 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
| 0 | 3050 JRT_END |
| 3051 | |
| 3052 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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|
3053 AdapterHandlerTableIterator iter(_adapters); |
|
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|
3054 while (iter.has_next()) { |
|
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|
3055 AdapterHandlerEntry* a = iter.next(); |
|
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|
3056 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 3057 } |
| 3058 return false; | |
| 3059 } | |
| 3060 | |
|
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|
3061 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
1187
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|
3062 AdapterHandlerTableIterator iter(_adapters); |
|
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|
3063 while (iter.has_next()) { |
|
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|
3064 AdapterHandlerEntry* a = iter.next(); |
|
6266
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|
3065 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
|
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|
3066 st->print("Adapter for signature: "); |
|
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|
3067 a->print_adapter_on(tty); |
| 0 | 3068 return; |
| 3069 } | |
| 3070 } | |
| 3071 assert(false, "Should have found handler"); | |
| 3072 } | |
|
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|
3073 |
|
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|
3074 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
|
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|
3075 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
|
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|
3076 (intptr_t) this, fingerprint()->as_string(), |
|
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|
3077 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
|
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|
3078 |
|
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|
3079 } |
|
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|
3080 |
|
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|
3081 #ifndef PRODUCT |
|
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diff
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|
3082 |
|
1187
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|
3083 void AdapterHandlerLibrary::print_statistics() { |
|
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|
3084 _adapters->print_statistics(); |
|
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|
3085 } |
|
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|
3086 |
| 0 | 3087 #endif /* PRODUCT */ |