Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/sharedRuntime.cpp @ 17795:a9becfeecd1b
Merge
| author | kvn |
|---|---|
| date | Wed, 22 Jan 2014 17:42:23 -0800 |
| parents | 5da8bb64b370 7b9127b17b7a |
| children | cf9f24de0b93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 // Shared stub locations |
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86 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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87 RuntimeStub* SharedRuntime::_wrong_method_abstract_blob; |
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88 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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89 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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90 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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91 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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92 |
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93 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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94 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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95 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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96 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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97 |
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98 #ifdef COMPILER2 |
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99 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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100 #endif // COMPILER2 |
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101 |
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102 |
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103 //----------------------------generate_stubs----------------------------------- |
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104 void SharedRuntime::generate_stubs() { |
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105 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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106 _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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107 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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108 _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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109 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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110 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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111 |
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112 #ifdef COMPILER2 |
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113 // Vectors are generated only by C2. |
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114 if (is_wide_vector(MaxVectorSize)) { |
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115 _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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116 } |
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117 #endif // COMPILER2 |
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118 _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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119 _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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120 |
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121 generate_deopt_blob(); |
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122 |
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123 #ifdef COMPILER2 |
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124 generate_uncommon_trap_blob(); |
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125 #endif // COMPILER2 |
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126 } |
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127 |
| 0 | 128 #include <math.h> |
| 129 | |
| 4006 | 130 #ifndef USDT2 |
| 0 | 131 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
| 132 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 133 char*, int, char*, int, char*, int); | |
| 134 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 135 char*, int, char*, int, char*, int); | |
| 4006 | 136 #endif /* !USDT2 */ |
| 0 | 137 |
| 138 // Implementation of SharedRuntime | |
| 139 | |
| 140 #ifndef PRODUCT | |
| 141 // For statistics | |
| 142 int SharedRuntime::_ic_miss_ctr = 0; | |
| 143 int SharedRuntime::_wrong_method_ctr = 0; | |
| 144 int SharedRuntime::_resolve_static_ctr = 0; | |
| 145 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 146 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 147 int SharedRuntime::_implicit_null_throws = 0; | |
| 148 int SharedRuntime::_implicit_div0_throws = 0; | |
| 149 int SharedRuntime::_throw_null_ctr = 0; | |
| 150 | |
| 151 int SharedRuntime::_nof_normal_calls = 0; | |
| 152 int SharedRuntime::_nof_optimized_calls = 0; | |
| 153 int SharedRuntime::_nof_inlined_calls = 0; | |
| 154 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 155 int SharedRuntime::_nof_static_calls = 0; | |
| 156 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 157 int SharedRuntime::_nof_interface_calls = 0; | |
| 158 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 159 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 160 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 161 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 162 | |
| 163 int SharedRuntime::_new_instance_ctr=0; | |
| 164 int SharedRuntime::_new_array_ctr=0; | |
| 165 int SharedRuntime::_multi1_ctr=0; | |
| 166 int SharedRuntime::_multi2_ctr=0; | |
| 167 int SharedRuntime::_multi3_ctr=0; | |
| 168 int SharedRuntime::_multi4_ctr=0; | |
| 169 int SharedRuntime::_multi5_ctr=0; | |
| 170 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 171 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 172 int SharedRuntime::_mon_enter_ctr=0; | |
| 173 int SharedRuntime::_mon_exit_ctr=0; | |
| 174 int SharedRuntime::_partial_subtype_ctr=0; | |
| 175 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 176 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 177 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 178 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 179 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 180 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 181 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 182 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 183 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 184 int SharedRuntime::_find_handler_ctr=0; | |
| 185 int SharedRuntime::_rethrow_ctr=0; | |
| 186 | |
| 187 int SharedRuntime::_ICmiss_index = 0; | |
| 188 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 189 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 190 | |
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191 |
| 0 | 192 void SharedRuntime::trace_ic_miss(address at) { |
| 193 for (int i = 0; i < _ICmiss_index; i++) { | |
| 194 if (_ICmiss_at[i] == at) { | |
| 195 _ICmiss_count[i]++; | |
| 196 return; | |
| 197 } | |
| 198 } | |
| 199 int index = _ICmiss_index++; | |
| 200 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 201 _ICmiss_at[index] = at; | |
| 202 _ICmiss_count[index] = 1; | |
| 203 } | |
| 204 | |
| 205 void SharedRuntime::print_ic_miss_histogram() { | |
| 206 if (ICMissHistogram) { | |
| 207 tty->print_cr ("IC Miss Histogram:"); | |
| 208 int tot_misses = 0; | |
| 209 for (int i = 0; i < _ICmiss_index; i++) { | |
| 210 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 211 tot_misses += _ICmiss_count[i]; | |
| 212 } | |
| 213 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 214 } | |
| 215 } | |
| 216 #endif // PRODUCT | |
| 217 | |
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218 #if INCLUDE_ALL_GCS |
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219 |
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220 // G1 write-barrier pre: executed before a pointer store. |
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221 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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222 if (orig == NULL) { |
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223 assert(false, "should be optimized out"); |
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224 return; |
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225 } |
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226 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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227 // store the original value that was in the field reference |
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228 thread->satb_mark_queue().enqueue(orig); |
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229 JRT_END |
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230 |
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231 // G1 write-barrier post: executed after a pointer store. |
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232 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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233 thread->dirty_card_queue().enqueue(card_addr); |
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234 JRT_END |
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235 |
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236 #endif // INCLUDE_ALL_GCS |
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237 |
| 0 | 238 |
| 239 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
| 240 return x * y; | |
| 241 JRT_END | |
| 242 | |
| 243 | |
| 244 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
| 245 if (x == min_jlong && y == CONST64(-1)) { | |
| 246 return x; | |
| 247 } else { | |
| 248 return x / y; | |
| 249 } | |
| 250 JRT_END | |
| 251 | |
| 252 | |
| 253 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
| 254 if (x == min_jlong && y == CONST64(-1)) { | |
| 255 return 0; | |
| 256 } else { | |
| 257 return x % y; | |
| 258 } | |
| 259 JRT_END | |
| 260 | |
| 261 | |
| 262 const juint float_sign_mask = 0x7FFFFFFF; | |
| 263 const juint float_infinity = 0x7F800000; | |
| 264 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
| 265 const julong double_infinity = CONST64(0x7FF0000000000000); | |
| 266 | |
| 267 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
| 268 #ifdef _WIN64 | |
| 269 // 64-bit Windows on amd64 returns the wrong values for | |
| 270 // infinity operands. | |
| 271 union { jfloat f; juint i; } xbits, ybits; | |
| 272 xbits.f = x; | |
| 273 ybits.f = y; | |
| 274 // x Mod Infinity == x unless x is infinity | |
| 275 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
| 276 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
| 277 return x; | |
| 278 } | |
| 279 #endif | |
| 280 return ((jfloat)fmod((double)x,(double)y)); | |
| 281 JRT_END | |
| 282 | |
| 283 | |
| 284 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
| 285 #ifdef _WIN64 | |
| 286 union { jdouble d; julong l; } xbits, ybits; | |
| 287 xbits.d = x; | |
| 288 ybits.d = y; | |
| 289 // x Mod Infinity == x unless x is infinity | |
| 290 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
| 291 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
| 292 return x; | |
| 293 } | |
| 294 #endif | |
| 295 return ((jdouble)fmod((double)x,(double)y)); | |
| 296 JRT_END | |
| 297 | |
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298 #ifdef __SOFTFP__ |
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299 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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300 return x + y; |
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301 JRT_END |
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302 |
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303 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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304 return x - y; |
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305 JRT_END |
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306 |
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307 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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308 return x * y; |
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309 JRT_END |
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310 |
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311 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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312 return x / y; |
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313 JRT_END |
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314 |
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315 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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316 return x + y; |
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317 JRT_END |
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318 |
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319 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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320 return x - y; |
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321 JRT_END |
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322 |
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323 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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324 return x * y; |
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325 JRT_END |
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326 |
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327 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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328 return x / y; |
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329 JRT_END |
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330 |
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331 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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332 return (jfloat)x; |
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333 JRT_END |
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334 |
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335 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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336 return (jdouble)x; |
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337 JRT_END |
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338 |
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339 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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340 return (jdouble)x; |
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341 JRT_END |
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342 |
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343 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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344 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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345 JRT_END |
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346 |
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347 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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348 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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349 JRT_END |
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350 |
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351 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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352 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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353 JRT_END |
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354 |
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355 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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356 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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357 JRT_END |
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358 |
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359 // Functions to return the opposite of the aeabi functions for nan. |
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360 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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361 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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362 JRT_END |
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363 |
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364 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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365 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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366 JRT_END |
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367 |
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368 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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369 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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370 JRT_END |
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371 |
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372 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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373 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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374 JRT_END |
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375 |
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376 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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377 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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378 JRT_END |
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379 |
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380 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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381 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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382 JRT_END |
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383 |
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384 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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385 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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386 JRT_END |
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387 |
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388 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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389 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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390 JRT_END |
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391 |
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392 // Intrinsics make gcc generate code for these. |
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393 float SharedRuntime::fneg(float f) { |
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394 return -f; |
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395 } |
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396 |
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397 double SharedRuntime::dneg(double f) { |
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398 return -f; |
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399 } |
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400 |
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401 #endif // __SOFTFP__ |
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402 |
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403 #if defined(__SOFTFP__) || defined(E500V2) |
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404 // Intrinsics make gcc generate code for these. |
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405 double SharedRuntime::dabs(double f) { |
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406 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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407 } |
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408 |
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409 #endif |
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410 |
| 14390 | 411 #if defined(__SOFTFP__) || defined(PPC32) |
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412 double SharedRuntime::dsqrt(double f) { |
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413 return sqrt(f); |
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414 } |
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415 #endif |
| 0 | 416 |
| 417 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
|
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418 if (g_isnan(x)) |
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419 return 0; |
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420 if (x >= (jfloat) max_jint) |
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421 return max_jint; |
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422 if (x <= (jfloat) min_jint) |
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423 return min_jint; |
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424 return (jint) x; |
| 0 | 425 JRT_END |
| 426 | |
| 427 | |
| 428 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
|
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429 if (g_isnan(x)) |
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430 return 0; |
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431 if (x >= (jfloat) max_jlong) |
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432 return max_jlong; |
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433 if (x <= (jfloat) min_jlong) |
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434 return min_jlong; |
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435 return (jlong) x; |
| 0 | 436 JRT_END |
| 437 | |
| 438 | |
| 439 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
|
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440 if (g_isnan(x)) |
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441 return 0; |
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442 if (x >= (jdouble) max_jint) |
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443 return max_jint; |
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444 if (x <= (jdouble) min_jint) |
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445 return min_jint; |
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446 return (jint) x; |
| 0 | 447 JRT_END |
| 448 | |
| 449 | |
| 450 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
|
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451 if (g_isnan(x)) |
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452 return 0; |
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453 if (x >= (jdouble) max_jlong) |
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454 return max_jlong; |
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455 if (x <= (jdouble) min_jlong) |
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456 return min_jlong; |
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457 return (jlong) x; |
| 0 | 458 JRT_END |
| 459 | |
| 460 | |
| 461 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
| 462 return (jfloat)x; | |
| 463 JRT_END | |
| 464 | |
| 465 | |
| 466 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
| 467 return (jfloat)x; | |
| 468 JRT_END | |
| 469 | |
| 470 | |
| 471 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
| 472 return (jdouble)x; | |
| 473 JRT_END | |
| 474 | |
| 475 // Exception handling accross interpreter/compiler boundaries | |
| 476 // | |
| 477 // exception_handler_for_return_address(...) returns the continuation address. | |
| 478 // The continuation address is the entry point of the exception handler of the | |
| 479 // previous frame depending on the return address. | |
| 480 | |
| 1295 | 481 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
|
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482 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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483 |
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484 // Reset method handle flag. |
|
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485 thread->set_is_method_handle_return(false); |
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486 |
|
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487 // The fastest case first |
| 0 | 488 CodeBlob* blob = CodeCache::find_blob(return_address); |
|
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489 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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490 if (nm != NULL) { |
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491 // Set flag if return address is a method handle call site. |
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492 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
| 0 | 493 // native nmethods don't have exception handlers |
|
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494 assert(!nm->is_native_method(), "no exception handler"); |
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495 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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496 if (nm->is_deopt_pc(return_address)) { |
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497 // If we come here because of a stack overflow, the stack may be |
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498 // unguarded. Reguard the stack otherwise if we return to the |
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499 // deopt blob and the stack bang causes a stack overflow we |
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500 // crash. |
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501 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); |
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502 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); |
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503 assert(guard_pages_enabled, "stack banging in deopt blob may cause crash"); |
| 0 | 504 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
| 505 } else { | |
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506 return nm->exception_begin(); |
| 0 | 507 } |
| 508 } | |
| 509 | |
| 510 // Entry code | |
| 511 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 512 return StubRoutines::catch_exception_entry(); | |
| 513 } | |
| 514 // Interpreted code | |
| 515 if (Interpreter::contains(return_address)) { | |
| 516 return Interpreter::rethrow_exception_entry(); | |
| 517 } | |
| 518 | |
|
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519 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
| 0 | 520 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
|
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521 |
| 0 | 522 #ifndef PRODUCT |
| 523 { ResourceMark rm; | |
| 524 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 525 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 526 tty->print_cr("b) other problem"); | |
| 527 } | |
| 528 #endif // PRODUCT | |
|
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529 |
| 0 | 530 ShouldNotReachHere(); |
| 531 return NULL; | |
| 532 } | |
| 533 | |
| 534 | |
| 1295 | 535 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 536 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 537 JRT_END |
| 538 | |
| 1295 | 539 |
| 0 | 540 address SharedRuntime::get_poll_stub(address pc) { |
| 541 address stub; | |
| 542 // Look up the code blob | |
| 543 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 544 | |
| 545 // Should be an nmethod | |
| 546 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 547 | |
| 548 // Look up the relocation information | |
| 549 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 550 "safepoint polling: type must be poll" ); | |
| 551 | |
| 552 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 553 "Only polling locations are used for safepoint"); | |
| 554 | |
| 555 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
|
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556 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
| 0 | 557 if (at_poll_return) { |
| 558 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 559 "polling page return stub not created yet"); | |
| 1748 | 560 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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561 } else if (has_wide_vectors) { |
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562 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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563 "polling page vectors safepoint stub not created yet"); |
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564 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
| 0 | 565 } else { |
| 566 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 567 "polling page safepoint stub not created yet"); | |
| 1748 | 568 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 569 } |
| 570 #ifndef PRODUCT | |
| 571 if( TraceSafepoint ) { | |
| 572 char buf[256]; | |
| 573 jio_snprintf(buf, sizeof(buf), | |
| 574 "... found polling page %s exception at pc = " | |
| 575 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 576 at_poll_return ? "return" : "loop", | |
| 577 (intptr_t)pc, (intptr_t)stub); | |
| 578 tty->print_raw_cr(buf); | |
| 579 } | |
| 580 #endif // PRODUCT | |
| 581 return stub; | |
| 582 } | |
| 583 | |
| 584 | |
|
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585 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 586 assert(caller.is_interpreted_frame(), ""); |
| 587 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 588 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
|
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589 oop result = cast_to_oop(*caller.interpreter_frame_tos_at(args_size - 1)); |
| 0 | 590 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); |
| 591 return result; | |
| 592 } | |
| 593 | |
| 594 | |
| 595 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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596 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 597 vframeStream vfst(thread, true); |
| 598 methodHandle method = methodHandle(thread, vfst.method()); | |
| 599 address bcp = method()->bcp_from(vfst.bci()); | |
| 600 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 601 } | |
| 602 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 603 } | |
| 604 | |
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605 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 606 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 607 throw_and_post_jvmti_exception(thread, h_exception); | |
| 608 } | |
| 609 | |
|
610
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610 // The interpreter code to call this tracing function is only |
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611 // called/generated when TraceRedefineClasses has the right bits |
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612 // set. Since obsolete methods are never compiled, we don't have |
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613 // to modify the compilers to generate calls to this function. |
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614 // |
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615 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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616 JavaThread* thread, Method* method)) |
|
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617 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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618 |
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619 if (method->is_obsolete()) { |
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620 // We are calling an obsolete method, but this is not necessarily |
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621 // an error. Our method could have been redefined just after we |
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622 // fetched the Method* from the constant pool. |
|
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623 |
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624 // RC_TRACE macro has an embedded ResourceMark |
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625 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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626 ("calling obsolete method '%s'", |
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627 method->name_and_sig_as_C_string())); |
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628 if (RC_TRACE_ENABLED(0x00002000)) { |
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629 // this option is provided to debug calls to obsolete methods |
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630 guarantee(false, "faulting at call to an obsolete method."); |
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631 } |
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632 } |
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633 return 0; |
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634 JRT_END |
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635 |
| 0 | 636 // ret_pc points into caller; we are returning caller's exception handler |
| 637 // for given exception | |
| 638 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 639 bool force_unwind, bool top_frame_only) { | |
| 640 assert(nm != NULL, "must exist"); | |
| 641 ResourceMark rm; | |
| 642 | |
| 643 ScopeDesc* sd = nm->scope_desc_at(ret_pc); | |
| 644 // determine handler bci, if any | |
| 645 EXCEPTION_MARK; | |
| 646 | |
| 647 int handler_bci = -1; | |
| 648 int scope_depth = 0; | |
| 649 if (!force_unwind) { | |
| 650 int bci = sd->bci(); | |
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651 bool recursive_exception = false; |
| 0 | 652 do { |
| 653 bool skip_scope_increment = false; | |
| 654 // exception handler lookup | |
| 655 KlassHandle ek (THREAD, exception->klass()); | |
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656 methodHandle mh(THREAD, sd->method()); |
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657 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
| 0 | 658 if (HAS_PENDING_EXCEPTION) { |
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659 recursive_exception = true; |
| 0 | 660 // We threw an exception while trying to find the exception handler. |
| 661 // Transfer the new exception to the exception handle which will | |
| 662 // be set into thread local storage, and do another lookup for an | |
| 663 // exception handler for this exception, this time starting at the | |
| 664 // BCI of the exception handler which caused the exception to be | |
| 665 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 666 // argument to ensure that the correct exception is thrown (4870175). | |
| 667 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 668 CLEAR_PENDING_EXCEPTION; | |
| 669 if (handler_bci >= 0) { | |
| 670 bci = handler_bci; | |
| 671 handler_bci = -1; | |
| 672 skip_scope_increment = true; | |
| 673 } | |
| 674 } | |
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675 else { |
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676 recursive_exception = false; |
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677 } |
| 0 | 678 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
| 679 sd = sd->sender(); | |
| 680 if (sd != NULL) { | |
| 681 bci = sd->bci(); | |
| 682 } | |
| 683 ++scope_depth; | |
| 684 } | |
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685 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
| 0 | 686 } |
| 687 | |
| 688 // found handling method => lookup exception handler | |
| 1748 | 689 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 690 |
| 691 ExceptionHandlerTable table(nm); | |
| 692 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 693 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 694 // Allow abbreviated catch tables. The idea is to allow a method | |
| 695 // to materialize its exceptions without committing to the exact | |
| 696 // routing of exceptions. In particular this is needed for adding | |
| 697 // a synthethic handler to unlock monitors when inlining | |
| 698 // synchonized methods since the unlock path isn't represented in | |
| 699 // the bytecodes. | |
| 700 t = table.entry_for(catch_pco, -1, 0); | |
| 701 } | |
| 702 | |
|
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703 #ifdef COMPILER1 |
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704 if (t == NULL && nm->is_compiled_by_c1()) { |
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705 assert(nm->unwind_handler_begin() != NULL, ""); |
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706 return nm->unwind_handler_begin(); |
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707 } |
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708 #endif |
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709 |
| 0 | 710 if (t == NULL) { |
| 711 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 712 tty->print_cr(" Exception:"); | |
| 713 exception->print(); | |
| 714 tty->cr(); | |
| 715 tty->print_cr(" Compiled exception table :"); | |
| 716 table.print(); | |
| 717 nm->print_code(); | |
| 718 guarantee(false, "missing exception handler"); | |
| 719 return NULL; | |
| 720 } | |
| 721 | |
| 1748 | 722 return nm->code_begin() + t->pco(); |
| 0 | 723 } |
| 724 | |
| 725 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 726 // These errors occur only at call sites | |
| 727 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 728 JRT_END | |
| 729 | |
|
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730 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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731 // These errors occur only at call sites |
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732 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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733 JRT_END |
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734 |
| 0 | 735 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 736 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 737 JRT_END | |
| 738 | |
| 739 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 740 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 741 JRT_END | |
| 742 | |
| 743 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 744 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 745 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 746 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 747 JRT_END | |
| 748 | |
| 749 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 750 // We avoid using the normal exception construction in this case because | |
| 751 // it performs an upcall to Java, and we're already out of stack space. | |
|
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752 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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753 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
| 0 | 754 Handle exception (thread, exception_oop); |
| 755 if (StackTraceInThrowable) { | |
| 756 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 757 } | |
| 758 throw_and_post_jvmti_exception(thread, exception); | |
| 759 JRT_END | |
| 760 | |
| 761 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, | |
| 762 address pc, | |
| 763 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 764 { | |
| 765 address target_pc = NULL; | |
| 766 | |
| 767 if (Interpreter::contains(pc)) { | |
| 768 #ifdef CC_INTERP | |
| 769 // C++ interpreter doesn't throw implicit exceptions | |
| 770 ShouldNotReachHere(); | |
| 771 #else | |
| 772 switch (exception_kind) { | |
| 773 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 774 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 775 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 776 default: ShouldNotReachHere(); | |
| 777 } | |
| 778 #endif // !CC_INTERP | |
| 779 } else { | |
| 780 switch (exception_kind) { | |
| 781 case STACK_OVERFLOW: { | |
| 782 // Stack overflow only occurs upon frame setup; the callee is | |
| 783 // going to be unwound. Dispatch to a shared runtime stub | |
| 784 // which will cause the StackOverflowError to be fabricated | |
| 785 // and processed. | |
| 786 // For stack overflow in deoptimization blob, cleanup thread. | |
| 787 if (thread->deopt_mark() != NULL) { | |
| 788 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 789 } | |
| 4944 | 790 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
| 0 | 791 return StubRoutines::throw_StackOverflowError_entry(); |
| 792 } | |
| 793 | |
| 794 case IMPLICIT_NULL: { | |
| 795 if (VtableStubs::contains(pc)) { | |
| 796 // We haven't yet entered the callee frame. Fabricate an | |
| 797 // exception and begin dispatching it in the caller. Since | |
| 798 // the caller was at a call site, it's safe to destroy all | |
| 799 // caller-saved registers, as these entry points do. | |
| 800 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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801 |
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802 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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803 if (vt_stub == NULL) return NULL; |
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804 |
| 0 | 805 if (vt_stub->is_abstract_method_error(pc)) { |
| 806 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 4944 | 807 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
| 0 | 808 return StubRoutines::throw_AbstractMethodError_entry(); |
| 809 } else { | |
| 4944 | 810 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
| 0 | 811 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 812 } | |
| 813 } else { | |
| 814 CodeBlob* cb = CodeCache::find_blob(pc); | |
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815 |
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816 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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817 if (cb == NULL) return NULL; |
| 0 | 818 |
| 819 // Exception happened in CodeCache. Must be either: | |
| 820 // 1. Inline-cache check in C2I handler blob, | |
| 821 // 2. Inline-cache check in nmethod, or | |
| 822 // 3. Implict null exception in nmethod | |
| 823 | |
| 824 if (!cb->is_nmethod()) { | |
| 11029 | 825 bool is_in_blob = cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(); |
| 826 if (!is_in_blob) { | |
| 827 cb->print(); | |
| 828 fatal(err_msg("exception happened outside interpreter, nmethods and vtable stubs at pc " INTPTR_FORMAT, pc)); | |
| 829 } | |
| 4944 | 830 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
| 0 | 831 // There is no handler here, so we will simply unwind. |
| 832 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 833 } | |
| 834 | |
| 835 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 836 nmethod* nm = (nmethod*)cb; | |
| 837 if (nm->inlinecache_check_contains(pc)) { | |
| 838 // exception happened inside inline-cache check code | |
| 839 // => the nmethod is not yet active (i.e., the frame | |
| 840 // is not set up yet) => use return address pushed by | |
| 841 // caller => don't push another return address | |
| 4944 | 842 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
| 0 | 843 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 844 } | |
| 845 | |
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846 if (nm->method()->is_method_handle_intrinsic()) { |
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847 // exception happened inside MH dispatch code, similar to a vtable stub |
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848 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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849 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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850 } |
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851 |
| 0 | 852 #ifndef PRODUCT |
| 853 _implicit_null_throws++; | |
| 854 #endif | |
| 855 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 856 // If there's an unexpected fault, target_pc might be NULL, |
| 857 // in which case we want to fall through into the normal | |
| 858 // error handling code. | |
| 0 | 859 } |
| 860 | |
| 861 break; // fall through | |
| 862 } | |
| 863 | |
| 864 | |
| 865 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 866 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 867 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 868 #ifndef PRODUCT | |
| 869 _implicit_div0_throws++; | |
| 870 #endif | |
| 871 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 872 // If there's an unexpected fault, target_pc might be NULL, |
| 873 // in which case we want to fall through into the normal | |
| 874 // error handling code. | |
| 0 | 875 break; // fall through |
| 876 } | |
| 877 | |
| 878 default: ShouldNotReachHere(); | |
| 879 } | |
| 880 | |
| 881 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 882 | |
| 883 // for AbortVMOnException flag | |
| 884 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 885 if (exception_kind == IMPLICIT_NULL) { | |
|
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886 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 887 } else { |
|
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888 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 889 } |
| 890 return target_pc; | |
| 891 } | |
| 892 | |
| 893 ShouldNotReachHere(); | |
| 894 return NULL; | |
| 895 } | |
| 896 | |
| 897 | |
|
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898 /** |
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899 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
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900 * installed in the native function entry of all native Java methods before |
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901 * they get linked to their actual native methods. |
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902 * |
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903 * \note |
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904 * This method actually never gets called! The reason is because |
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905 * the interpreter's native entries call NativeLookup::lookup() which |
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906 * throws the exception when the lookup fails. The exception is then |
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907 * caught and forwarded on the return from NativeLookup::lookup() call |
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908 * before the call to the native function. This might change in the future. |
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909 */ |
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910 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
| 0 | 911 { |
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912 // We return a bad value here to make sure that the exception is |
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913 // forwarded before we look at the return value. |
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914 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
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915 } |
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916 JNI_END |
| 0 | 917 |
| 918 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 919 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 920 } | |
| 921 | |
| 922 | |
| 923 #ifndef PRODUCT | |
| 924 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 925 const frame f = thread->last_frame(); | |
| 926 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 927 #ifndef PRODUCT | |
| 928 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 929 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 930 #endif // !PRODUCT | |
| 931 return preserve_this_value; | |
| 932 JRT_END | |
| 933 #endif // !PRODUCT | |
| 934 | |
| 935 | |
| 936 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 937 os::yield_all(attempts); | |
| 938 JRT_END | |
| 939 | |
| 940 | |
| 941 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 942 assert(obj->is_oop(), "must be a valid oop"); | |
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943 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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944 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 945 JRT_END |
| 946 | |
| 947 | |
| 948 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 949 if (thread != NULL) { | |
| 950 if (thread->is_Java_thread()) { | |
| 951 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 952 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 953 } | |
| 954 } | |
| 955 return 0; | |
| 956 } | |
| 957 | |
| 958 /** | |
| 959 * This function ought to be a void function, but cannot be because | |
| 960 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 961 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 962 */ | |
| 963 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 964 return dtrace_object_alloc_base(Thread::current(), o); | |
| 965 } | |
| 966 | |
| 967 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 968 assert(DTraceAllocProbes, "wrong call"); | |
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969 Klass* klass = o->klass(); |
| 0 | 970 int size = o->size(); |
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971 Symbol* name = klass->name(); |
| 4006 | 972 #ifndef USDT2 |
| 0 | 973 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 974 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 4006 | 975 #else /* USDT2 */ |
| 976 HOTSPOT_OBJECT_ALLOC( | |
| 977 get_java_tid(thread), | |
| 978 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 979 #endif /* USDT2 */ | |
| 0 | 980 return 0; |
| 981 } | |
| 982 | |
| 983 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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984 JavaThread* thread, Method* method)) |
| 0 | 985 assert(DTraceMethodProbes, "wrong call"); |
|
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986 Symbol* kname = method->klass_name(); |
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987 Symbol* name = method->name(); |
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988 Symbol* sig = method->signature(); |
| 4006 | 989 #ifndef USDT2 |
| 0 | 990 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 991 kname->bytes(), kname->utf8_length(), | |
| 992 name->bytes(), name->utf8_length(), | |
| 993 sig->bytes(), sig->utf8_length()); | |
| 4006 | 994 #else /* USDT2 */ |
| 995 HOTSPOT_METHOD_ENTRY( | |
| 996 get_java_tid(thread), | |
| 997 (char *) kname->bytes(), kname->utf8_length(), | |
| 998 (char *) name->bytes(), name->utf8_length(), | |
| 999 (char *) sig->bytes(), sig->utf8_length()); | |
| 1000 #endif /* USDT2 */ | |
| 0 | 1001 return 0; |
| 1002 JRT_END | |
| 1003 | |
| 1004 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1005 JavaThread* thread, Method* method)) |
| 0 | 1006 assert(DTraceMethodProbes, "wrong call"); |
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1007 Symbol* kname = method->klass_name(); |
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1008 Symbol* name = method->name(); |
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1009 Symbol* sig = method->signature(); |
| 4006 | 1010 #ifndef USDT2 |
| 0 | 1011 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 1012 kname->bytes(), kname->utf8_length(), | |
| 1013 name->bytes(), name->utf8_length(), | |
| 1014 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1015 #else /* USDT2 */ |
| 1016 HOTSPOT_METHOD_RETURN( | |
| 1017 get_java_tid(thread), | |
| 1018 (char *) kname->bytes(), kname->utf8_length(), | |
| 1019 (char *) name->bytes(), name->utf8_length(), | |
| 1020 (char *) sig->bytes(), sig->utf8_length()); | |
| 1021 #endif /* USDT2 */ | |
| 0 | 1022 return 0; |
| 1023 JRT_END | |
| 1024 | |
| 1025 | |
| 1026 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 1027 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1028 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 1029 // vtable updates, etc. Caller frame must be compiled. | |
| 1030 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 1031 ResourceMark rm(THREAD); | |
| 1032 | |
| 1033 // last java frame on stack (which includes native call frames) | |
| 1034 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 1035 | |
| 1036 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 1037 } | |
| 1038 | |
| 1039 | |
| 1040 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 1041 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1042 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 1043 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1044 vframeStream& vfst, | |
| 1045 Bytecodes::Code& bc, | |
| 1046 CallInfo& callinfo, TRAPS) { | |
| 1047 Handle receiver; | |
| 1048 Handle nullHandle; //create a handy null handle for exception returns | |
| 1049 | |
| 1050 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1051 | |
| 1052 // Find caller and bci from vframe | |
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1053 methodHandle caller(THREAD, vfst.method()); |
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1054 int bci = vfst.bci(); |
| 0 | 1055 |
| 1056 // Find bytecode | |
| 2142 | 1057 Bytecode_invoke bytecode(caller, bci); |
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1058 bc = bytecode.invoke_code(); |
| 2142 | 1059 int bytecode_index = bytecode.index(); |
| 0 | 1060 |
| 1061 // Find receiver for non-static call | |
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1062 if (bc != Bytecodes::_invokestatic && |
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1063 bc != Bytecodes::_invokedynamic && |
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1064 bc != Bytecodes::_invokehandle) { |
| 0 | 1065 // This register map must be update since we need to find the receiver for |
| 1066 // compiled frames. The receiver might be in a register. | |
| 1067 RegisterMap reg_map2(thread); | |
| 1068 frame stubFrame = thread->last_frame(); | |
| 1069 // Caller-frame is a compiled frame | |
| 1070 frame callerFrame = stubFrame.sender(®_map2); | |
| 1071 | |
| 2142 | 1072 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1073 if (callee.is_null()) { |
| 1074 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1075 } | |
| 1076 // Retrieve from a compiled argument list | |
| 1077 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1078 | |
| 1079 if (receiver.is_null()) { | |
| 1080 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1081 } | |
| 1082 } | |
| 1083 | |
| 1084 // Resolve method. This is parameterized by bytecode. | |
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1085 constantPoolHandle constants(THREAD, caller->constants()); |
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1086 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
| 0 | 1087 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
| 1088 | |
| 1089 #ifdef ASSERT | |
| 1090 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1091 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic && bc != Bytecodes::_invokehandle) { |
| 0 | 1092 assert(receiver.not_null(), "should have thrown exception"); |
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1093 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1094 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
| 0 | 1095 // klass is already loaded |
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1096 KlassHandle static_receiver_klass(THREAD, rk); |
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1097 // Method handle invokes might have been optimized to a direct call |
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1098 // so don't check for the receiver class. |
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1099 // FIXME this weakens the assert too much |
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1100 methodHandle callee = callinfo.selected_method(); |
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1101 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1102 callee->is_method_handle_intrinsic() || |
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1103 callee->is_compiled_lambda_form(), |
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1104 "actual receiver must be subclass of static receiver klass"); |
| 0 | 1105 if (receiver_klass->oop_is_instance()) { |
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1106 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
| 0 | 1107 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1108 receiver_klass()->print(); |
| 0 | 1109 } |
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1110 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
| 0 | 1111 } |
| 1112 } | |
| 1113 #endif | |
| 1114 | |
| 1115 return receiver; | |
| 1116 } | |
| 1117 | |
| 1118 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1119 ResourceMark rm(THREAD); | |
| 1120 // We need first to check if any Java activations (compiled, interpreted) | |
| 1121 // exist on the stack since last JavaCall. If not, we need | |
| 1122 // to get the target method from the JavaCall wrapper. | |
| 1123 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1124 methodHandle callee_method; | |
| 1125 if (vfst.at_end()) { | |
| 1126 // No Java frames were found on stack since we did the JavaCall. | |
| 1127 // Hence the stack can only contain an entry_frame. We need to | |
| 1128 // find the target method from the stub frame. | |
| 1129 RegisterMap reg_map(thread, false); | |
| 1130 frame fr = thread->last_frame(); | |
| 1131 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1132 fr = fr.sender(®_map); | |
| 1133 assert(fr.is_entry_frame(), "must be"); | |
| 1134 // fr is now pointing to the entry frame. | |
| 1135 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1136 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1137 } else { | |
| 1138 Bytecodes::Code bc; | |
| 1139 CallInfo callinfo; | |
| 1140 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1141 callee_method = callinfo.selected_method(); | |
| 1142 } | |
| 1143 assert(callee_method()->is_method(), "must be"); | |
| 1144 return callee_method; | |
| 1145 } | |
| 1146 | |
| 1147 // Resolves a call. | |
| 1148 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1149 bool is_virtual, | |
| 1150 bool is_optimized, TRAPS) { | |
| 1151 methodHandle callee_method; | |
| 1152 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1153 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1154 int retry_count = 0; | |
| 1155 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1156 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1157 // If has a pending exception then there is no need to re-try to |
| 1158 // resolve this method. | |
| 1159 // If the method has been redefined, we need to try again. | |
| 1160 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1161 // require that java.lang.Object has been updated. | |
| 1162 | |
| 1163 // It is very unlikely that method is redefined more than 100 times | |
| 1164 // in the middle of resolve. If it is looping here more than 100 times | |
| 1165 // means then there could be a bug here. | |
| 1166 guarantee((retry_count++ < 100), | |
| 1167 "Could not resolve to latest version of redefined method"); | |
| 1168 // method is redefined in the middle of resolve so re-try. | |
| 1169 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1170 } | |
| 1171 } | |
| 1172 return callee_method; | |
| 1173 } | |
| 1174 | |
| 1175 // Resolves a call. The compilers generate code for calls that go here | |
| 1176 // and are patched with the real destination of the call. | |
| 1177 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1178 bool is_virtual, | |
| 1179 bool is_optimized, TRAPS) { | |
| 1180 | |
| 1181 ResourceMark rm(thread); | |
| 1182 RegisterMap cbl_map(thread, false); | |
| 1183 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1184 | |
| 1295 | 1185 CodeBlob* caller_cb = caller_frame.cb(); |
| 1186 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1187 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 13441 | 1188 |
| 0 | 1189 // make sure caller is not getting deoptimized |
| 1190 // and removed before we are done with it. | |
| 1191 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1192 nmethodLocker caller_lock(caller_nm); |
| 0 | 1193 |
| 1194 // determine call info & receiver | |
| 1195 // note: a) receiver is NULL for static calls | |
| 1196 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1197 CallInfo call_info; | |
| 1198 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1199 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1200 call_info, CHECK_(methodHandle())); | |
| 1201 methodHandle callee_method = call_info.selected_method(); | |
| 1202 | |
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1203 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1204 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1205 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1206 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
| 0 | 1207 |
| 13441 | 1208 // We do not patch the call site if the caller nmethod has been made non-entrant. |
| 1209 if (!caller_nm->is_in_use()) { | |
| 1210 return callee_method; | |
| 1211 } | |
| 1212 | |
| 0 | 1213 #ifndef PRODUCT |
| 1214 // tracing/debugging/statistics | |
| 1215 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1216 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1217 (&_resolve_static_ctr); | |
| 1218 Atomic::inc(addr); | |
| 1219 | |
| 1220 if (TraceCallFixup) { | |
| 1221 ResourceMark rm(thread); | |
| 1222 tty->print("resolving %s%s (%s) call to", | |
| 1223 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1224 Bytecodes::name(invoke_code)); | |
| 1225 callee_method->print_short_name(tty); | |
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1226 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
| 0 | 1227 } |
| 1228 #endif | |
| 1229 | |
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1230 // JSR 292 key invariant: |
| 1295 | 1231 // If the resolved method is a MethodHandle invoke target the call |
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1232 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1233 // leaving the stack in a state unknown to either caller or callee |
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1234 // TODO detune for now but we might need it again |
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1235 // assert(!callee_method->is_compiled_lambda_form() || |
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1236 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
| 1295 | 1237 |
| 0 | 1238 // Compute entry points. This might require generation of C2I converter |
| 1239 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1240 // computation of the entry points is independent of patching the call. We | |
| 1241 // always return the entry-point, but we only patch the stub if the call has | |
| 1242 // not been deoptimized. Return values: For a virtual call this is an | |
| 1243 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1244 // virtual this is just a destination address. | |
| 1245 | |
| 1246 StaticCallInfo static_call_info; | |
| 1247 CompiledICInfo virtual_call_info; | |
| 1248 | |
| 1249 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1250 // we are done patching the code. | |
| 1295 | 1251 nmethod* callee_nm = callee_method->code(); |
| 13441 | 1252 if (callee_nm != NULL && !callee_nm->is_in_use()) { |
| 1253 // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded. | |
| 1254 callee_nm = NULL; | |
| 1255 } | |
| 1295 | 1256 nmethodLocker nl_callee(callee_nm); |
| 0 | 1257 #ifdef ASSERT |
| 1295 | 1258 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1259 #endif |
| 1260 | |
| 1261 if (is_virtual) { | |
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1262 assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check"); |
| 0 | 1263 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); |
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1264 KlassHandle h_klass(THREAD, invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass()); |
| 0 | 1265 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, |
| 1266 is_optimized, static_bound, virtual_call_info, | |
| 1267 CHECK_(methodHandle())); | |
| 1268 } else { | |
| 1269 // static call | |
| 1270 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1271 } | |
| 1272 | |
| 1273 // grab lock, check for deoptimization and potentially patch caller | |
| 1274 { | |
| 1275 MutexLocker ml_patch(CompiledIC_lock); | |
| 1276 | |
| 13441 | 1277 // Lock blocks for safepoint during which both nmethods can change state. |
| 1278 | |
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1279 // Now that we are ready to patch if the Method* was redefined then |
| 0 | 1280 // don't update call site and let the caller retry. |
| 13441 | 1281 // Don't update call site if caller nmethod has been made non-entrant |
| 1282 // as it is a waste of time. | |
| 1283 // Don't update call site if callee nmethod was unloaded or deoptimized. | |
| 1284 // Don't update call site if callee nmethod was replaced by an other nmethod | |
| 1285 // which may happen when multiply alive nmethod (tiered compilation) | |
| 1286 // will be supported. | |
| 1287 if (!callee_method->is_old() && caller_nm->is_in_use() && | |
| 1288 (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) { | |
| 0 | 1289 #ifdef ASSERT |
| 1290 // We must not try to patch to jump to an already unloaded method. | |
| 1291 if (dest_entry_point != 0) { | |
| 13441 | 1292 CodeBlob* cb = CodeCache::find_blob(dest_entry_point); |
| 1293 assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm), | |
| 1294 "should not call unloaded nmethod"); | |
| 0 | 1295 } |
| 1296 #endif | |
| 1297 if (is_virtual) { | |
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1298 nmethod* nm = callee_nm; |
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1299 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1300 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
| 0 | 1301 if (inline_cache->is_clean()) { |
| 1302 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1303 } | |
| 1304 } else { | |
| 1305 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1306 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1307 } | |
| 1308 } | |
| 1309 | |
| 1310 } // unlock CompiledIC_lock | |
| 1311 | |
| 1312 return callee_method; | |
| 1313 } | |
| 1314 | |
| 1315 | |
| 1316 // Inline caches exist only in compiled code | |
| 1317 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1318 #ifdef ASSERT | |
| 1319 RegisterMap reg_map(thread, false); | |
| 1320 frame stub_frame = thread->last_frame(); | |
| 1321 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1322 frame caller_frame = stub_frame.sender(®_map); | |
| 1323 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
| 1324 #endif /* ASSERT */ | |
| 1325 | |
| 1326 methodHandle callee_method; | |
| 1327 JRT_BLOCK | |
| 1328 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1329 // Return Method* through TLS |
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1330 thread->set_vm_result_2(callee_method()); |
| 0 | 1331 JRT_BLOCK_END |
| 1332 // return compiled code entry point after potential safepoints | |
| 1333 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1334 return callee_method->verified_code_entry(); | |
| 1335 JRT_END | |
| 1336 | |
| 1337 | |
| 1338 // Handle call site that has been made non-entrant | |
| 1339 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1340 // 6243940 We might end up in here if the callee is deoptimized | |
| 1341 // as we race to call it. We don't want to take a safepoint if | |
| 1342 // the caller was interpreted because the caller frame will look | |
| 1343 // interpreted to the stack walkers and arguments are now | |
| 1344 // "compiled" so it is much better to make this transition | |
| 1345 // invisible to the stack walking code. The i2c path will | |
| 1346 // place the callee method in the callee_target. It is stashed | |
| 1347 // there because if we try and find the callee by normal means a | |
| 1348 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1349 RegisterMap reg_map(thread, false); | |
| 1350 frame stub_frame = thread->last_frame(); | |
| 1351 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1352 frame caller_frame = stub_frame.sender(®_map); | |
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1353 |
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1354 if (caller_frame.is_interpreted_frame() || |
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1355 caller_frame.is_entry_frame()) { |
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1356 Method* callee = thread->callee_target(); |
| 0 | 1357 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1358 thread->set_vm_result_2(callee); |
| 0 | 1359 thread->set_callee_target(NULL); |
| 1360 return callee->get_c2i_entry(); | |
| 1361 } | |
| 1362 | |
| 1363 // Must be compiled to compiled path which is safe to stackwalk | |
| 1364 methodHandle callee_method; | |
| 1365 JRT_BLOCK | |
| 1366 // Force resolving of caller (if we called from compiled frame) | |
| 1367 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1368 thread->set_vm_result_2(callee_method()); |
| 0 | 1369 JRT_BLOCK_END |
| 1370 // return compiled code entry point after potential safepoints | |
| 1371 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1372 return callee_method->verified_code_entry(); | |
| 1373 JRT_END | |
| 1374 | |
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1375 // Handle abstract method call |
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1376 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_abstract(JavaThread* thread)) |
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1377 return StubRoutines::throw_AbstractMethodError_entry(); |
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1378 JRT_END |
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1379 |
| 0 | 1380 |
| 1381 // resolve a static call and patch code | |
| 1382 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1383 methodHandle callee_method; | |
| 1384 JRT_BLOCK | |
| 1385 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1386 thread->set_vm_result_2(callee_method()); |
| 0 | 1387 JRT_BLOCK_END |
| 1388 // return compiled code entry point after potential safepoints | |
| 1389 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1390 return callee_method->verified_code_entry(); | |
| 1391 JRT_END | |
| 1392 | |
| 1393 | |
| 1394 // resolve virtual call and update inline cache to monomorphic | |
| 1395 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1396 methodHandle callee_method; | |
| 1397 JRT_BLOCK | |
| 1398 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1399 thread->set_vm_result_2(callee_method()); |
| 0 | 1400 JRT_BLOCK_END |
| 1401 // return compiled code entry point after potential safepoints | |
| 1402 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1403 return callee_method->verified_code_entry(); | |
| 1404 JRT_END | |
| 1405 | |
| 1406 | |
| 1407 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1408 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1409 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1410 methodHandle callee_method; | |
| 1411 JRT_BLOCK | |
| 1412 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1413 thread->set_vm_result_2(callee_method()); |
| 0 | 1414 JRT_BLOCK_END |
| 1415 // return compiled code entry point after potential safepoints | |
| 1416 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1417 return callee_method->verified_code_entry(); | |
| 1418 JRT_END | |
| 1419 | |
| 1420 | |
| 1421 | |
| 1422 | |
| 1423 | |
| 1424 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1425 ResourceMark rm(thread); | |
| 1426 CallInfo call_info; | |
| 1427 Bytecodes::Code bc; | |
| 1428 | |
| 1429 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1430 // receivers for non-static calls | |
| 1431 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1432 CHECK_(methodHandle())); | |
| 1433 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1434 // If we fell thru to below we would think that the site was going megamorphic | |
| 1435 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1436 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1437 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1438 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1439 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1440 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1441 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1442 // | |
| 1443 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1444 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1445 if (TraceCallFixup) { | |
| 1446 RegisterMap reg_map(thread, false); | |
| 1447 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1448 ResourceMark rm(thread); | |
| 1449 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1450 callee_method->print_short_name(tty); | |
| 1451 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1452 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1453 } | |
| 1454 return callee_method; | |
| 1455 } | |
| 1456 | |
| 1457 methodHandle callee_method = call_info.selected_method(); | |
| 1458 | |
| 1459 bool should_be_mono = false; | |
| 1460 | |
| 1461 #ifndef PRODUCT | |
| 1462 Atomic::inc(&_ic_miss_ctr); | |
| 1463 | |
| 1464 // Statistics & Tracing | |
| 1465 if (TraceCallFixup) { | |
| 1466 ResourceMark rm(thread); | |
| 1467 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1468 callee_method->print_short_name(tty); | |
| 1469 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1470 } | |
| 1471 | |
| 1472 if (ICMissHistogram) { | |
| 1473 MutexLocker m(VMStatistic_lock); | |
| 1474 RegisterMap reg_map(thread, false); | |
| 1475 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1476 // produce statistics under the lock | |
| 1477 trace_ic_miss(f.pc()); | |
| 1478 } | |
| 1479 #endif | |
| 1480 | |
| 1481 // install an event collector so that when a vtable stub is created the | |
| 1482 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1483 // event can't be posted when the stub is created as locks are held | |
| 1484 // - instead the event will be deferred until the event collector goes | |
| 1485 // out of scope. | |
| 1486 JvmtiDynamicCodeEventCollector event_collector; | |
| 1487 | |
| 1488 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1489 // made non-entrant or we are called from interpreted. | |
| 1490 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1491 RegisterMap reg_map(thread, false); | |
| 1492 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1493 CodeBlob* cb = caller_frame.cb(); | |
| 1494 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1495 // Not a non-entrant nmethod, so find inline_cache | |
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1496 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
| 0 | 1497 bool should_be_mono = false; |
| 1498 if (inline_cache->is_optimized()) { | |
| 1499 if (TraceCallFixup) { | |
| 1500 ResourceMark rm(thread); | |
| 1501 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1502 callee_method->print_short_name(tty); | |
| 1503 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1504 } | |
| 1505 should_be_mono = true; | |
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1506 } else if (inline_cache->is_icholder_call()) { |
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1507 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1508 if ( ic_oop != NULL) { |
| 0 | 1509 |
| 1510 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1511 // This isn't a real miss. We must have seen that compiled code | |
| 1512 // is now available and we want the call site converted to a | |
| 1513 // monomorphic compiled call site. | |
| 1514 // We can't assert for callee_method->code() != NULL because it | |
| 1515 // could have been deoptimized in the meantime | |
| 1516 if (TraceCallFixup) { | |
| 1517 ResourceMark rm(thread); | |
| 1518 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1519 callee_method->print_short_name(tty); | |
| 1520 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1521 } | |
| 1522 should_be_mono = true; | |
| 1523 } | |
| 1524 } | |
| 1525 } | |
| 1526 | |
| 1527 if (should_be_mono) { | |
| 1528 | |
| 1529 // We have a path that was monomorphic but was going interpreted | |
| 1530 // and now we have (or had) a compiled entry. We correct the IC | |
| 1531 // by using a new icBuffer. | |
| 1532 CompiledICInfo info; | |
| 1533 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1534 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1535 receiver_klass, | |
| 1536 inline_cache->is_optimized(), | |
| 1537 false, | |
| 1538 info, CHECK_(methodHandle())); | |
| 1539 inline_cache->set_to_monomorphic(info); | |
| 1540 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 12294 | 1541 // Potential change to megamorphic |
| 1542 bool successful = inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1543 if (!successful) { | |
| 1544 inline_cache->set_to_clean(); | |
| 1545 } | |
| 0 | 1546 } else { |
| 1547 // Either clean or megamorphic | |
| 1548 } | |
| 1549 } | |
| 1550 } // Release CompiledIC_lock | |
| 1551 | |
| 1552 return callee_method; | |
| 1553 } | |
| 1554 | |
| 1555 // | |
| 1556 // Resets a call-site in compiled code so it will get resolved again. | |
| 1557 // This routines handles both virtual call sites, optimized virtual call | |
| 1558 // sites, and static call sites. Typically used to change a call sites | |
| 1559 // destination from compiled to interpreted. | |
| 1560 // | |
| 1561 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1562 ResourceMark rm(thread); | |
| 1563 RegisterMap reg_map(thread, false); | |
| 1564 frame stub_frame = thread->last_frame(); | |
| 1565 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1566 frame caller = stub_frame.sender(®_map); | |
| 1567 | |
| 1568 // Do nothing if the frame isn't a live compiled frame. | |
| 1569 // nmethod could be deoptimized by the time we get here | |
| 1570 // so no update to the caller is needed. | |
| 1571 | |
| 1572 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1573 | |
| 1574 address pc = caller.pc(); | |
| 1575 | |
| 1576 // Default call_addr is the location of the "basic" call. | |
| 1577 // Determine the address of the call we a reresolving. With | |
| 1578 // Inline Caches we will always find a recognizable call. | |
| 1579 // With Inline Caches disabled we may or may not find a | |
| 1580 // recognizable call. We will always find a call for static | |
| 1581 // calls and for optimized virtual calls. For vanilla virtual | |
| 1582 // calls it depends on the state of the UseInlineCaches switch. | |
| 1583 // | |
| 1584 // With Inline Caches disabled we can get here for a virtual call | |
| 1585 // for two reasons: | |
| 1586 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1587 // will run us thru handle_wrong_method and we will eventually | |
| 1588 // end up in the interpreter to throw the ame. | |
| 1589 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1590 // call and between the time we fetch the entry address and | |
| 1591 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1592 // we will wind up in the interprter (thru a c2i with c2). | |
| 1593 // | |
| 1594 address call_addr = NULL; | |
| 1595 { | |
| 1596 // Get call instruction under lock because another thread may be | |
| 1597 // busy patching it. | |
| 1598 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1599 // Location of call instruction | |
| 1600 if (NativeCall::is_call_before(pc)) { | |
| 1601 NativeCall *ncall = nativeCall_before(pc); | |
| 1602 call_addr = ncall->instruction_address(); | |
| 1603 } | |
| 1604 } | |
| 1605 | |
| 1606 // Check for static or virtual call | |
| 1607 bool is_static_call = false; | |
| 1608 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1609 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1610 // this is done with it. | |
| 1611 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1612 nmethodLocker nmlock(caller_nm); | |
| 1613 | |
| 1614 if (call_addr != NULL) { | |
| 1615 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1616 int ret = iter.next(); // Get item | |
| 1617 if (ret) { | |
| 1618 assert(iter.addr() == call_addr, "must find call"); | |
| 1619 if (iter.type() == relocInfo::static_call_type) { | |
| 1620 is_static_call = true; | |
| 1621 } else { | |
| 1622 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1623 iter.type() == relocInfo::opt_virtual_call_type | |
| 1624 , "unexpected relocInfo. type"); | |
| 1625 } | |
| 1626 } else { | |
| 1627 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1628 } | |
| 1629 | |
| 1630 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1631 // than directly setting it to the new destination, since resolving of calls | |
| 1632 // is always done through the same code path. (experience shows that it | |
| 1633 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1634 // to a wrong method). It should not be performance critical, since the | |
| 1635 // resolve is only done once. | |
| 1636 | |
| 1637 MutexLocker ml(CompiledIC_lock); | |
| 1638 // | |
| 1639 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1640 // as it is a waste of time | |
| 1641 // | |
| 1642 if (caller_nm->is_in_use()) { | |
| 1643 if (is_static_call) { | |
| 1644 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1645 ssc->set_to_clean(); | |
| 1646 } else { | |
| 1647 // compiled, dispatched call (which used to call an interpreted method) | |
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1648 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
| 0 | 1649 inline_cache->set_to_clean(); |
| 1650 } | |
| 1651 } | |
| 1652 } | |
| 1653 | |
| 1654 } | |
| 1655 | |
| 1656 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1657 | |
| 1658 | |
| 1659 #ifndef PRODUCT | |
| 1660 Atomic::inc(&_wrong_method_ctr); | |
| 1661 | |
| 1662 if (TraceCallFixup) { | |
| 1663 ResourceMark rm(thread); | |
| 1664 tty->print("handle_wrong_method reresolving call to"); | |
| 1665 callee_method->print_short_name(tty); | |
| 1666 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1667 } | |
| 1668 #endif | |
| 1669 | |
| 1670 return callee_method; | |
| 1671 } | |
| 1672 | |
|
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1673 #ifdef ASSERT |
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1674 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1675 const BasicType* sig_bt, |
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1676 const VMRegPair* regs) { |
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1677 ResourceMark rm; |
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1678 const int total_args_passed = method->size_of_parameters(); |
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1679 const VMRegPair* regs_with_member_name = regs; |
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1680 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1681 |
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1682 const int member_arg_pos = total_args_passed - 1; |
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1683 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1684 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1685 |
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1686 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1687 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1688 |
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1689 for (int i = 0; i < member_arg_pos; i++) { |
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1690 VMReg a = regs_with_member_name[i].first(); |
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1691 VMReg b = regs_without_member_name[i].first(); |
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1692 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1693 } |
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1694 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1695 } |
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1696 #endif |
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1697 |
| 0 | 1698 // --------------------------------------------------------------------------- |
| 1699 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1700 // we were called by a compiled method. However we could have lost a race | |
| 1701 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1702 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1703 // so he no longer calls into the interpreter. |
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1704 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1705 Method* moop(method); |
| 0 | 1706 |
| 1707 address entry_point = moop->from_compiled_entry(); | |
| 1708 | |
| 1709 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1710 // been resolved yet, in which case this function will be called from | |
| 1711 // an nmethod that has been patched for deopt and we can ignore the | |
| 1712 // request for a fixup. | |
| 1713 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1714 // is now back to the i2c in that case we don't need to patch and if | |
| 1715 // we did we'd leap into space because the callsite needs to use | |
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1716 // "to interpreter" stub in order to load up the Method*. Don't |
| 0 | 1717 // ask me how I know this... |
| 1718 | |
| 1719 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1720 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1721 return; | |
| 1722 } | |
| 1723 | |
| 1724 // The check above makes sure this is a nmethod. | |
| 1725 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1726 assert(nm, "must be"); | |
| 1727 | |
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1728 // Get the return PC for the passed caller PC. |
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1729 address return_pc = caller_pc + frame::pc_return_offset; |
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1730 |
| 0 | 1731 // There is a benign race here. We could be attempting to patch to a compiled |
| 1732 // entry point at the same time the callee is being deoptimized. If that is | |
| 1733 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1734 // call site with the same old data. clear_code will set code() to NULL | |
| 1735 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1736 // to patch. If we hit the window where the callee has a c2i in the | |
| 1737 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1738 // and patch the code with the same old data. Asi es la vida. | |
| 1739 | |
| 1740 if (moop->code() == NULL) return; | |
| 1741 | |
| 1205 | 1742 if (nm->is_in_use()) { |
| 0 | 1743 |
| 1744 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1745 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1746 if (NativeCall::is_call_before(return_pc)) { |
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1747 NativeCall *call = nativeCall_before(return_pc); |
| 0 | 1748 // |
| 1749 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1750 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1751 // see compiled code and attempt to patch the site by calling us. This would | |
| 1752 // then incorrectly convert the call site to optimized and its downhill from | |
| 1753 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1754 // just made a call site that could be megamorphic into a monomorphic site | |
| 1755 // for the rest of its life! Just another racing bug in the life of | |
| 1756 // fixup_callers_callsite ... | |
| 1757 // | |
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1758 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1759 iter.next(); |
| 1760 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1761 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1762 if ( typ != relocInfo::static_call_type && | |
| 1763 typ != relocInfo::opt_virtual_call_type && | |
| 1764 typ != relocInfo::static_stub_type) { | |
| 1765 return; | |
| 1766 } | |
| 1767 address destination = call->destination(); | |
| 1768 if (destination != entry_point) { | |
| 1769 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1770 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1771 if (callee == cb || callee->is_adapter_blob()) { | |
| 1772 // static call or optimized virtual | |
| 1773 if (TraceCallFixup) { | |
| 1204 | 1774 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1775 moop->print_short_name(tty); |
| 1776 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1777 } | |
| 1778 call->set_destination_mt_safe(entry_point); | |
| 1779 } else { | |
| 1780 if (TraceCallFixup) { | |
| 1781 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1782 moop->print_short_name(tty); | |
| 1783 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1784 } | |
| 1785 // assert is too strong could also be resolve destinations. | |
| 1786 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1787 } | |
| 1788 } else { | |
| 1789 if (TraceCallFixup) { | |
| 1204 | 1790 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1791 moop->print_short_name(tty); |
| 1792 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1793 } | |
| 1794 } | |
| 1795 } | |
| 1796 } | |
| 1797 IRT_END | |
| 1798 | |
| 1799 | |
| 1800 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1801 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1802 oopDesc* dest, jint dest_pos, | |
| 1803 jint length, | |
| 1804 JavaThread* thread)) { | |
| 1805 #ifndef PRODUCT | |
| 1806 _slow_array_copy_ctr++; | |
| 1807 #endif | |
| 1808 // Check if we have null pointers | |
| 1809 if (src == NULL || dest == NULL) { | |
| 1810 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1811 } | |
| 1812 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1813 // even though the copy_array API also performs dynamic checks to ensure | |
| 1814 // that src and dest are truly arrays (and are conformable). | |
| 1815 // The copy_array mechanism is awkward and could be removed, but | |
| 1816 // the compilers don't call this function except as a last resort, | |
| 1817 // so it probably doesn't matter. | |
| 6983 | 1818 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
| 0 | 1819 (arrayOopDesc*)dest, dest_pos, |
| 1820 length, thread); | |
| 1821 } | |
| 1822 JRT_END | |
| 1823 | |
| 1824 char* SharedRuntime::generate_class_cast_message( | |
| 1825 JavaThread* thread, const char* objName) { | |
| 1826 | |
| 1827 // Get target class name from the checkcast instruction | |
| 1828 vframeStream vfst(thread, true); | |
| 1829 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1830 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 6983 | 1831 Klass* targetKlass = vfst.method()->constants()->klass_at( |
| 1832 cc.index(), thread); | |
| 0 | 1833 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1834 } | |
| 1835 | |
| 1836 char* SharedRuntime::generate_class_cast_message( | |
| 710 | 1837 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1838 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1839 | |
| 53 | 1840 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1841 if (NULL == message) { |
| 53 | 1842 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1843 message = const_cast<char*>(objName); |
| 1844 } else { | |
| 1845 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1846 } | |
| 1847 return message; | |
| 1848 } | |
| 1849 | |
| 1850 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1851 (void) JavaThread::current()->reguard_stack(); | |
| 1852 JRT_END | |
| 1853 | |
| 1854 | |
| 1855 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1856 #ifndef PRODUCT | |
| 1857 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1858 #endif | |
| 1859 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1860 oop obj(_obj); | |
| 1861 #ifndef PRODUCT | |
| 1862 _monitor_enter_ctr++; // monitor enter slow | |
| 1863 #endif | |
| 1864 if (PrintBiasedLockingStatistics) { | |
| 1865 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1866 } | |
| 1867 Handle h_obj(THREAD, obj); | |
| 1868 if (UseBiasedLocking) { | |
| 1869 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1870 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1871 } else { | |
| 1872 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1873 } | |
| 1874 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1875 JRT_END | |
| 1876 | |
| 1877 #ifndef PRODUCT | |
| 1878 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1879 #endif | |
| 1880 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1881 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1882 oop obj(_obj); | |
| 1883 #ifndef PRODUCT | |
| 1884 _monitor_exit_ctr++; // monitor exit slow | |
| 1885 #endif | |
| 1886 Thread* THREAD = JavaThread::current(); | |
| 1887 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1888 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1889 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1890 #undef MIGHT_HAVE_PENDING | |
| 1891 #ifdef MIGHT_HAVE_PENDING | |
| 1892 // Save and restore any pending_exception around the exception mark. | |
| 1893 // While the slow_exit must not throw an exception, we could come into | |
| 1894 // this routine with one set. | |
| 1895 oop pending_excep = NULL; | |
| 1896 const char* pending_file; | |
| 1897 int pending_line; | |
| 1898 if (HAS_PENDING_EXCEPTION) { | |
| 1899 pending_excep = PENDING_EXCEPTION; | |
| 1900 pending_file = THREAD->exception_file(); | |
| 1901 pending_line = THREAD->exception_line(); | |
| 1902 CLEAR_PENDING_EXCEPTION; | |
| 1903 } | |
| 1904 #endif /* MIGHT_HAVE_PENDING */ | |
| 1905 | |
| 1906 { | |
| 1907 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1908 EXCEPTION_MARK; | |
| 1909 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1910 } | |
| 1911 | |
| 1912 #ifdef MIGHT_HAVE_PENDING | |
| 1913 if (pending_excep != NULL) { | |
| 1914 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1915 } | |
| 1916 #endif /* MIGHT_HAVE_PENDING */ | |
| 1917 JRT_END | |
| 1918 | |
| 1919 #ifndef PRODUCT | |
| 1920 | |
| 1921 void SharedRuntime::print_statistics() { | |
| 1922 ttyLocker ttyl; | |
| 1923 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1924 | |
| 1925 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1926 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1927 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1928 | |
| 1929 SharedRuntime::print_ic_miss_histogram(); | |
| 1930 | |
| 1931 if (CountRemovableExceptions) { | |
| 1932 if (_nof_removable_exceptions > 0) { | |
| 1933 Unimplemented(); // this counter is not yet incremented | |
| 1934 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1935 } | |
| 1936 } | |
| 1937 | |
| 1938 // Dump the JRT_ENTRY counters | |
| 1939 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 1940 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 1941 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 1942 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 1943 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 1944 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 1945 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 1946 | |
| 1947 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 1948 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 1949 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 1950 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 1951 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 1952 | |
| 1953 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 1954 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 1955 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 1956 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 1957 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 1958 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 1959 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 1960 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 1961 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 1962 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 1963 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 1964 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 1965 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 1966 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 1967 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 1968 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 1969 | |
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1970 AdapterHandlerLibrary::print_statistics(); |
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1971 |
| 0 | 1972 if (xtty != NULL) xtty->tail("statistics"); |
| 1973 } | |
| 1974 | |
| 1975 inline double percent(int x, int y) { | |
| 1976 return 100.0 * x / MAX2(y, 1); | |
| 1977 } | |
| 1978 | |
| 1979 class MethodArityHistogram { | |
| 1980 public: | |
| 1981 enum { MAX_ARITY = 256 }; | |
| 1982 private: | |
| 1983 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 1984 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 1985 static int _max_arity; // max. arity seen | |
| 1986 static int _max_size; // max. arg size seen | |
| 1987 | |
| 1988 static void add_method_to_histogram(nmethod* nm) { | |
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1989 Method* m = nm->method(); |
| 0 | 1990 ArgumentCount args(m->signature()); |
| 1991 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 1992 int argsize = m->size_of_parameters(); | |
| 1993 arity = MIN2(arity, MAX_ARITY-1); | |
| 1994 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 1995 int count = nm->method()->compiled_invocation_count(); | |
| 1996 _arity_histogram[arity] += count; | |
| 1997 _size_histogram[argsize] += count; | |
| 1998 _max_arity = MAX2(_max_arity, arity); | |
| 1999 _max_size = MAX2(_max_size, argsize); | |
| 2000 } | |
| 2001 | |
| 2002 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 2003 const int N = MIN2(5, n); | |
| 2004 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2005 double sum = 0; | |
| 2006 double weighted_sum = 0; | |
| 2007 int i; | |
| 2008 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 2009 double rest = sum; | |
| 2010 double percent = sum / 100; | |
| 2011 for (i = 0; i <= N; i++) { | |
| 2012 rest -= histo[i]; | |
| 2013 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 2014 } | |
| 2015 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 2016 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 2017 } | |
| 2018 | |
| 2019 void print_histogram() { | |
| 2020 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2021 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 2022 tty->print_cr("\nSame for parameter size (in words):"); | |
| 2023 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 2024 tty->cr(); | |
| 2025 } | |
| 2026 | |
| 2027 public: | |
| 2028 MethodArityHistogram() { | |
| 2029 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 2030 _max_arity = _max_size = 0; | |
| 2031 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 2032 CodeCache::nmethods_do(add_method_to_histogram); | |
| 2033 print_histogram(); | |
| 2034 } | |
| 2035 }; | |
| 2036 | |
| 2037 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2038 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2039 int MethodArityHistogram::_max_arity; | |
| 2040 int MethodArityHistogram::_max_size; | |
| 2041 | |
| 2042 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2043 tty->print_cr("Calls from compiled code:"); | |
| 2044 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2045 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2046 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2047 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2048 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2049 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2050 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2051 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2052 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2053 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2054 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2055 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2056 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2057 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2058 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2059 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2060 tty->cr(); | |
| 2061 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2062 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2063 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2064 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2065 tty->cr(); | |
| 2066 | |
| 2067 MethodArityHistogram h; | |
| 2068 } | |
| 2069 #endif | |
| 2070 | |
| 2071 | |
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2072 // A simple wrapper class around the calling convention information |
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2073 // that allows sharing of adapters for the same calling convention. |
| 6197 | 2074 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2075 private: |
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2076 enum { |
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2077 _basic_type_bits = 4, |
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2078 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2079 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2080 _compact_int_count = 3 |
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2081 }; |
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2082 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2083 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2084 |
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2085 union { |
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2086 int _compact[_compact_int_count]; |
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2087 int* _fingerprint; |
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2088 } _value; |
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2089 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2090 // Otherwise _value._fingerprint is the array. |
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2091 |
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2092 // Remap BasicTypes that are handled equivalently by the adapters. |
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2093 // These are correct for the current system but someday it might be |
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2094 // necessary to make this mapping platform dependent. |
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2095 static int adapter_encoding(BasicType in) { |
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2096 switch(in) { |
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2097 case T_BOOLEAN: |
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2098 case T_BYTE: |
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2099 case T_SHORT: |
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2100 case T_CHAR: |
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2101 // There are all promoted to T_INT in the calling convention |
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2102 return T_INT; |
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2103 |
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2104 case T_OBJECT: |
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2105 case T_ARRAY: |
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2106 // In other words, we assume that any register good enough for |
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2107 // an int or long is good enough for a managed pointer. |
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2108 #ifdef _LP64 |
| 1506 | 2109 return T_LONG; |
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2110 #else |
| 1506 | 2111 return T_INT; |
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2112 #endif |
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2113 |
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2114 case T_INT: |
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2115 case T_LONG: |
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2116 case T_FLOAT: |
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2117 case T_DOUBLE: |
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2118 case T_VOID: |
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2119 return in; |
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2120 |
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2121 default: |
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2122 ShouldNotReachHere(); |
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2123 return T_CONFLICT; |
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2124 } |
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2125 } |
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2126 |
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2127 public: |
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2128 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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2129 // The fingerprint is based on the BasicType signature encoded |
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2130 // into an array of ints with eight entries per int. |
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2131 int* ptr; |
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2132 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2133 if (len <= _compact_int_count) { |
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2134 assert(_compact_int_count == 3, "else change next line"); |
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2135 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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2136 // Storing the signature encoded as signed chars hits about 98% |
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2137 // of the time. |
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|
2138 _length = -len; |
|
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diff
changeset
|
2139 ptr = _value._compact; |
|
74c848d437ab
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diff
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|
2140 } else { |
|
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diff
changeset
|
2141 _length = len; |
| 6197 | 2142 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
|
1207
74c848d437ab
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|
2143 ptr = _value._fingerprint; |
|
74c848d437ab
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1205
diff
changeset
|
2144 } |
|
74c848d437ab
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diff
changeset
|
2145 |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
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3781
diff
changeset
|
2146 // Now pack the BasicTypes with 8 per int |
|
1207
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diff
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|
2147 int sig_index = 0; |
|
74c848d437ab
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|
2148 for (int index = 0; index < len; index++) { |
|
74c848d437ab
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|
2149 int value = 0; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2150 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2151 int bt = ((sig_index < total_args_passed) |
|
1d7922586cf6
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twisti
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|
2152 ? adapter_encoding(sig_bt[sig_index++]) |
|
1d7922586cf6
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twisti
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6197
diff
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|
2153 : 0); |
|
1d7922586cf6
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twisti
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6197
diff
changeset
|
2154 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
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|
2155 value = (value << _basic_type_bits) | bt; |
|
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|
2156 } |
|
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diff
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|
2157 ptr[index] = value; |
|
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diff
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|
2158 } |
|
1187
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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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|
2159 } |
|
cf0685d550f1
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parents:
1142
diff
changeset
|
2160 |
|
cf0685d550f1
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diff
changeset
|
2161 ~AdapterFingerPrint() { |
|
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|
2162 if (_length > 0) { |
| 6197 | 2163 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
|
1187
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|
2164 } |
|
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|
2165 } |
|
cf0685d550f1
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diff
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|
2166 |
|
1207
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|
2167 int value(int index) { |
|
1187
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|
2168 if (_length < 0) { |
|
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|
2169 return _value._compact[index]; |
|
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|
2170 } |
|
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|
2171 return _value._fingerprint[index]; |
|
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|
2172 } |
|
cf0685d550f1
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parents:
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diff
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|
2173 int length() { |
|
cf0685d550f1
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|
2174 if (_length < 0) return -_length; |
|
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diff
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|
2175 return _length; |
|
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diff
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|
2176 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2177 |
|
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diff
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|
2178 bool is_compact() { |
|
cf0685d550f1
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diff
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|
2179 return _length <= 0; |
|
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parents:
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diff
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|
2180 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2181 |
|
cf0685d550f1
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changeset
|
2182 unsigned int compute_hash() { |
|
1207
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|
2183 int hash = 0; |
|
1187
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changeset
|
2184 for (int i = 0; i < length(); i++) { |
|
1207
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|
2185 int v = value(i); |
|
1187
cf0685d550f1
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|
2186 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
cf0685d550f1
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|
2187 } |
|
cf0685d550f1
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parents:
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diff
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|
2188 return (unsigned int)hash; |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2189 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2190 |
|
cf0685d550f1
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parents:
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diff
changeset
|
2191 const char* as_string() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2192 stringStream st; |
|
3841
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7071427: AdapterFingerPrint can hold 8 entries per int
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3781
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|
2193 st.print("0x"); |
|
1187
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|
2194 for (int i = 0; i < length(); i++) { |
|
3841
0f34fdee809e
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never
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3781
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changeset
|
2195 st.print("%08x", value(i)); |
|
1187
cf0685d550f1
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|
2196 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2197 return st.as_string(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2198 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2199 |
|
cf0685d550f1
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diff
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|
2200 bool equals(AdapterFingerPrint* other) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2201 if (other->_length != _length) { |
|
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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|
2202 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2203 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2204 if (_length < 0) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2205 assert(_compact_int_count == 3, "else change next line"); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2206 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2207 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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changeset
|
2208 _value._compact[2] == other->_value._compact[2]; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2209 } else { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2210 for (int i = 0; i < _length; i++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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changeset
|
2211 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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parents:
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diff
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|
2212 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2213 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2214 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2215 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2216 return true; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2217 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2218 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2219 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2220 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2221 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
| 6197 | 2222 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2223 friend class AdapterHandlerTableIterator; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2224 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2225 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2226 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2227 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2228 static int _lookups; // number of calls to lookup |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2229 static int _buckets; // number of buckets checked |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2230 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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parents:
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diff
changeset
|
2231 static int _hits; // number of successful lookups |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2232 static int _compact; // number of equals calls with compact signature |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2233 #endif |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2234 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2235 AdapterHandlerEntry* bucket(int i) { |
| 6197 | 2236 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2237 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2238 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2239 public: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2240 AdapterHandlerTable() |
| 6197 | 2241 : 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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|
2242 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2243 // Create a new entry suitable for insertion in the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2244 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
| 6197 | 2245 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2246 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2247 return entry; |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2248 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2249 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2250 // Insert an entry into the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2251 void add(AdapterHandlerEntry* entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2252 int index = hash_to_index(entry->hash()); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2253 add_entry(index, entry); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2254 } |
|
cf0685d550f1
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diff
changeset
|
2255 |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2256 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2257 entry->deallocate(); |
| 6197 | 2258 BasicHashtable<mtCode>::free_entry(entry); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2259 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2260 |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2261 // Find a entry with the same fingerprint if it exists |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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diff
changeset
|
2262 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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1257
diff
changeset
|
2263 NOT_PRODUCT(_lookups++); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2264 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2265 unsigned int hash = fp.compute_hash(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2266 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
|
2267 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2268 NOT_PRODUCT(_buckets++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2269 if (e->hash() == hash) { |
|
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|
2270 NOT_PRODUCT(_equals++); |
|
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|
2271 if (fp.equals(e->fingerprint())) { |
|
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|
2272 #ifndef PRODUCT |
|
1187
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|
2273 if (fp.is_compact()) _compact++; |
|
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|
2274 _hits++; |
|
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|
2275 #endif |
|
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|
2276 return e; |
|
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|
2277 } |
|
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|
2278 } |
|
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|
2279 } |
|
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|
2280 return NULL; |
|
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|
2281 } |
|
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|
2282 |
|
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|
2283 #ifndef PRODUCT |
|
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|
2284 void print_statistics() { |
|
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|
2285 ResourceMark rm; |
|
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|
2286 int longest = 0; |
|
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|
2287 int empty = 0; |
|
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|
2288 int total = 0; |
|
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|
2289 int nonempty = 0; |
|
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|
2290 for (int index = 0; index < table_size(); index++) { |
|
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|
2291 int count = 0; |
|
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|
2292 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
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|
2293 count++; |
|
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|
2294 } |
|
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|
2295 if (count != 0) nonempty++; |
|
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|
2296 if (count == 0) empty++; |
|
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|
2297 if (count > longest) longest = count; |
|
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|
2298 total += count; |
|
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|
2299 } |
|
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|
2300 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2301 empty, longest, total, total / (double)nonempty); |
|
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|
2302 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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|
2303 _lookups, _buckets, _equals, _hits, _compact); |
|
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|
2304 } |
|
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|
2305 #endif |
|
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|
2306 }; |
|
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|
2307 |
|
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|
2308 |
|
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|
2309 #ifndef PRODUCT |
|
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|
2310 |
|
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|
2311 int AdapterHandlerTable::_lookups; |
|
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|
2312 int AdapterHandlerTable::_buckets; |
|
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|
2313 int AdapterHandlerTable::_equals; |
|
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|
2314 int AdapterHandlerTable::_hits; |
|
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|
2315 int AdapterHandlerTable::_compact; |
|
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|
2316 |
|
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|
2317 #endif |
|
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|
2318 |
|
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|
2319 class AdapterHandlerTableIterator : public StackObj { |
|
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|
2320 private: |
|
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|
2321 AdapterHandlerTable* _table; |
|
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|
2322 int _index; |
|
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|
2323 AdapterHandlerEntry* _current; |
|
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|
2324 |
|
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|
2325 void scan() { |
|
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|
2326 while (_index < _table->table_size()) { |
|
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|
2327 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2328 _index++; |
|
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|
2329 if (a != NULL) { |
|
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|
2330 _current = a; |
|
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|
2331 return; |
|
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|
2332 } |
|
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|
2333 } |
|
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|
2334 } |
|
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|
2335 |
|
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|
2336 public: |
|
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|
2337 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
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|
2338 scan(); |
|
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|
2339 } |
|
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|
2340 bool has_next() { |
|
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|
2341 return _current != NULL; |
|
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|
2342 } |
|
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|
2343 AdapterHandlerEntry* next() { |
|
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|
2344 if (_current != NULL) { |
|
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|
2345 AdapterHandlerEntry* result = _current; |
|
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|
2346 _current = _current->next(); |
|
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|
2347 if (_current == NULL) scan(); |
|
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|
2348 return result; |
|
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|
2349 } else { |
|
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|
2350 return NULL; |
|
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never
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|
2351 } |
|
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|
2352 } |
|
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|
2353 }; |
|
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|
2354 |
|
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|
2355 |
| 0 | 2356 // --------------------------------------------------------------------------- |
| 2357 // Implementation of AdapterHandlerLibrary | |
|
1187
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|
2358 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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|
2359 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2360 const int AdapterHandlerLibrary_size = 16*K; |
|
742
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|
2361 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
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|
2362 |
|
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|
2363 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
45463a04ca27
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|
2364 // Should be called only when AdapterHandlerLibrary_lock is active. |
|
45463a04ca27
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|
2365 if (_buffer == NULL) // Initialize lazily |
|
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|
2366 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
|
45463a04ca27
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|
2367 return _buffer; |
|
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|
2368 } |
| 0 | 2369 |
| 2370 void AdapterHandlerLibrary::initialize() { | |
|
1187
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|
2371 if (_adapters != NULL) return; |
|
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|
2372 _adapters = new AdapterHandlerTable(); |
| 0 | 2373 |
| 2374 // Create a special handler for abstract methods. Abstract methods | |
| 2375 // are never compiled so an i2c entry is somewhat meaningless, but | |
|
13382
570aaefce624
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|
2376 // throw AbstractMethodError just in case. |
|
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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changeset
|
2377 // Pass wrong_method_abstract for the c2i transitions to return |
|
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
morris
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diff
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|
2378 // AbstractMethodError for invalid invocations. |
|
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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|
2379 address wrong_method_abstract = SharedRuntime::get_handle_wrong_method_abstract_stub(); |
|
1187
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|
2380 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
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|
2381 StubRoutines::throw_AbstractMethodError_entry(), |
|
13382
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|
2382 wrong_method_abstract, wrong_method_abstract); |
| 0 | 2383 } |
| 2384 | |
|
1187
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|
2385 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
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|
2386 address i2c_entry, |
|
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|
2387 address c2i_entry, |
|
cf0685d550f1
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|
2388 address c2i_unverified_entry) { |
|
cf0685d550f1
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|
2389 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2390 } |
|
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|
2391 |
|
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|
2392 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
cf0685d550f1
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|
2393 // Use customized signature handler. Need to lock around updates to |
|
cf0685d550f1
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|
2394 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
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|
2395 // and a single writer: this could be fixed if it becomes a |
|
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|
2396 // problem). |
| 0 | 2397 |
| 2398 // Get the address of the ic_miss handlers before we grab the | |
| 2399 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2400 // was caused by the initialization of the stubs happening | |
| 2401 // while we held the lock and then notifying jvmti while | |
| 2402 // holding it. This just forces the initialization to be a little | |
| 2403 // earlier. | |
| 2404 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2405 assert(ic_miss != NULL, "must have handler"); | |
| 2406 | |
|
1187
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|
2407 ResourceMark rm; |
|
cf0685d550f1
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|
2408 |
| 1748 | 2409 NOT_PRODUCT(int insts_size); |
| 17611 | 2410 AdapterBlob* new_adapter = NULL; |
|
742
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|
2411 AdapterHandlerEntry* entry = NULL; |
|
1187
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|
2412 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2413 { |
| 2414 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2415 // make sure data structure is initialized | |
| 2416 initialize(); | |
| 2417 | |
| 2418 if (method->is_abstract()) { | |
|
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|
2419 return _abstract_method_handler; |
| 0 | 2420 } |
| 2421 | |
|
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|
2422 // Fill in the signature array, for the calling-convention call. |
|
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|
2423 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
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|
2424 |
|
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|
2425 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
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|
2426 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
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diff
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|
2427 int i = 0; |
|
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|
2428 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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|
2429 sig_bt[i++] = T_OBJECT; |
|
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|
2430 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
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|
2431 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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|
2432 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
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|
2433 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2434 } |
|
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|
2435 assert(i == total_args_passed, ""); |
|
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|
2436 |
|
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|
2437 // Lookup method signature's fingerprint |
|
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|
2438 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
1187
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|
2439 |
|
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|
2440 #ifdef ASSERT |
|
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|
2441 AdapterHandlerEntry* shared_entry = NULL; |
| 17611 | 2442 // Start adapter sharing verification only after the VM is booted. |
| 2443 if (VerifyAdapterSharing && (entry != NULL)) { | |
|
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|
2444 shared_entry = entry; |
|
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|
2445 entry = NULL; |
|
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|
2446 } |
|
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|
2447 #endif |
|
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|
2448 |
|
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changeset
|
2449 if (entry != NULL) { |
|
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|
2450 return entry; |
| 0 | 2451 } |
| 2452 | |
|
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|
2453 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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|
2454 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
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|
2455 |
|
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|
2456 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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|
2457 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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|
2458 |
| 17611 | 2459 // StubRoutines::code2() is initialized after this function can be called. As a result, |
| 2460 // VerifyAdapterCalls and VerifyAdapterSharing can fail if we re-use code that generated | |
| 2461 // prior to StubRoutines::code2() being set. Checks refer to checks generated in an I2C | |
| 2462 // stub that ensure that an I2C stub is called from an interpreter frame. | |
| 2463 bool contains_all_checks = StubRoutines::code2() != NULL; | |
| 2464 | |
| 0 | 2465 // Create I2C & C2I handlers |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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diff
changeset
|
2466 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
742
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diff
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|
2467 if (buf != NULL) { |
| 1748 | 2468 CodeBuffer buffer(buf); |
|
742
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diff
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|
2469 short buffer_locs[20]; |
|
45463a04ca27
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710
diff
changeset
|
2470 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
|
45463a04ca27
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diff
changeset
|
2471 sizeof(buffer_locs)/sizeof(relocInfo)); |
| 17611 | 2472 |
|
742
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diff
changeset
|
2473 MacroAssembler _masm(&buffer); |
|
45463a04ca27
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diff
changeset
|
2474 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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diff
changeset
|
2475 total_args_passed, |
|
45463a04ca27
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710
diff
changeset
|
2476 comp_args_on_stack, |
|
45463a04ca27
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diff
changeset
|
2477 sig_bt, |
|
1187
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changeset
|
2478 regs, |
|
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changeset
|
2479 fingerprint); |
|
1207
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diff
changeset
|
2480 #ifdef ASSERT |
|
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diff
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|
2481 if (VerifyAdapterSharing) { |
|
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diff
changeset
|
2482 if (shared_entry != NULL) { |
| 17611 | 2483 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size()), "code must match"); |
|
1207
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diff
changeset
|
2484 // Release the one just created and return the original |
|
74c848d437ab
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never
parents:
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diff
changeset
|
2485 _adapters->free_entry(entry); |
|
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1205
diff
changeset
|
2486 return shared_entry; |
|
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never
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1205
diff
changeset
|
2487 } else { |
| 17611 | 2488 entry->save_code(buf->code_begin(), buffer.insts_size()); |
|
1207
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1205
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changeset
|
2489 } |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2490 } |
|
74c848d437ab
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never
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1205
diff
changeset
|
2491 #endif |
|
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diff
changeset
|
2492 |
| 17611 | 2493 new_adapter = AdapterBlob::create(&buffer); |
| 1748 | 2494 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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diff
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|
2495 } |
| 17611 | 2496 if (new_adapter == NULL) { |
| 28 | 2497 // CodeCache is full, disable compilation |
| 2498 // Ought to log this but compile log is only per compile thread | |
| 2499 // and we're some non descript Java thread. | |
| 1202 | 2500 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2501 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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|
2502 return NULL; // Out of CodeCache space |
| 28 | 2503 } |
| 17611 | 2504 entry->relocate(new_adapter->content_begin()); |
| 0 | 2505 #ifndef PRODUCT |
| 2506 // debugging suppport | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2507 if (PrintAdapterHandlers || PrintStubCode) { |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
parents:
6792
diff
changeset
|
2508 ttyLocker ttyl; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2509 entry->print_adapter_on(tty); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2510 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
|
2511 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2512 method->signature()->as_C_string(), insts_size); |
| 0 | 2513 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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6197
diff
changeset
|
2514 if (Verbose || PrintStubCode) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2515 address first_pc = entry->base_address(); |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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6792
diff
changeset
|
2516 if (first_pc != NULL) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2517 Disassembler::decode(first_pc, first_pc + insts_size); |
|
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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6792
diff
changeset
|
2518 tty->cr(); |
|
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
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6792
diff
changeset
|
2519 } |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2520 } |
| 0 | 2521 } |
| 2522 #endif | |
| 17611 | 2523 // Add the entry only if the entry contains all required checks (see sharedRuntime_xxx.cpp) |
| 2524 // The checks are inserted only if -XX:+VerifyAdapterCalls is specified. | |
| 2525 if (contains_all_checks || !VerifyAdapterCalls) { | |
| 2526 _adapters->add(entry); | |
| 2527 } | |
| 0 | 2528 } |
| 2529 // Outside of the lock | |
| 17611 | 2530 if (new_adapter != NULL) { |
| 0 | 2531 char blob_id[256]; |
| 2532 jio_snprintf(blob_id, | |
| 2533 sizeof(blob_id), | |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2534 "%s(%s)@" PTR_FORMAT, |
| 17611 | 2535 new_adapter->name(), |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2536 fingerprint->as_string(), |
| 17611 | 2537 new_adapter->content_begin()); |
| 2538 Forte::register_stub(blob_id, new_adapter->content_begin(),new_adapter->content_end()); | |
| 0 | 2539 |
| 2540 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 17611 | 2541 JvmtiExport::post_dynamic_code_generated(blob_id, new_adapter->content_begin(), new_adapter->content_end()); |
| 0 | 2542 } |
| 2543 } | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2544 return entry; |
| 0 | 2545 } |
| 2546 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2547 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
|
2548 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
|
2549 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
|
2550 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
|
2551 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2552 return base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2553 } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2554 |
| 0 | 2555 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
|
2556 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
|
2557 assert(old_base != NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2558 ptrdiff_t delta = new_base - old_base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2559 if (_i2c_entry != NULL) |
| 0 | 2560 _i2c_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
|
2561 if (_c2i_entry != NULL) |
| 0 | 2562 _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
|
2563 if (_c2i_unverified_entry != NULL) |
| 0 | 2564 _c2i_unverified_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
|
2565 assert(base_address() == new_base, ""); |
| 0 | 2566 } |
| 2567 | |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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diff
changeset
|
2568 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2569 void AdapterHandlerEntry::deallocate() { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2570 delete _fingerprint; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2571 #ifdef ASSERT |
| 6197 | 2572 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2573 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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1205
diff
changeset
|
2574 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2575 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2576 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2577 #ifdef ASSERT |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2578 // Capture the code before relocation so that it can be compared |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2579 // against other versions. If the code is captured after relocation |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2580 // then relative instructions won't be equivalent. |
| 17611 | 2581 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length) { |
| 6197 | 2582 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
| 17611 | 2583 _saved_code_length = length; |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2584 memcpy(_saved_code, buffer, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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1205
diff
changeset
|
2585 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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diff
changeset
|
2586 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2587 |
| 17611 | 2588 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length) { |
| 2589 if (length != _saved_code_length) { | |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2590 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2591 } |
| 17611 | 2592 |
| 2593 return (memcmp(buffer, _saved_code, length) == 0) ? true : false; | |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2594 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2595 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2596 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2597 |
| 17625 | 2598 /** |
| 2599 * Create a native wrapper for this native method. The wrapper converts the | |
| 2600 * Java-compiled calling convention to the native convention, handles | |
| 2601 * arguments, and transitions to native. On return from the native we transition | |
| 2602 * back to java blocking if a safepoint is in progress. | |
| 2603 */ | |
| 2604 void AdapterHandlerLibrary::create_native_wrapper(methodHandle method) { | |
| 0 | 2605 ResourceMark rm; |
| 2606 nmethod* nm = NULL; | |
| 2607 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2608 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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|
2609 assert(method->is_method_handle_intrinsic() || |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2610 method->has_native_function(), "must have something valid to call!"); |
| 0 | 2611 |
| 2612 { | |
| 17625 | 2613 // Perform the work while holding the lock, but perform any printing outside the lock |
| 0 | 2614 MutexLocker mu(AdapterHandlerLibrary_lock); |
| 2615 // See if somebody beat us to it | |
| 2616 nm = method->code(); | |
| 17625 | 2617 if (nm != NULL) { |
| 2618 return; | |
| 0 | 2619 } |
| 2620 | |
| 17625 | 2621 const int compile_id = CompileBroker::assign_compile_id(method, CompileBroker::standard_entry_bci); |
| 2622 assert(compile_id > 0, "Must generate native wrapper"); | |
| 2623 | |
| 2624 | |
|
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|
2625 ResourceMark rm; |
|
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|
2626 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
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changeset
|
2627 if (buf != NULL) { |
| 1748 | 2628 CodeBuffer buffer(buf); |
|
742
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|
2629 double locs_buf[20]; |
|
45463a04ca27
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diff
changeset
|
2630 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
45463a04ca27
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|
2631 MacroAssembler _masm(&buffer); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2632 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2633 // Fill in the signature array, for the calling-convention call. |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
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diff
changeset
|
2634 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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|
2635 |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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diff
changeset
|
2636 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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diff
changeset
|
2637 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2638 int i=0; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2639 if( !method->is_static() ) // Pass in receiver first |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2640 sig_bt[i++] = T_OBJECT; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2641 SignatureStream ss(method->signature()); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2642 for( ; !ss.at_return_type(); ss.next()) { |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2643 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2644 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2645 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2646 } |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
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6725
diff
changeset
|
2647 assert(i == total_args_passed, ""); |
|
742
45463a04ca27
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|
2648 BasicType ret_type = ss.type(); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2649 |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2650 // Now get the compiled-Java layout as input (or output) arguments. |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2651 // NOTE: Stubs for compiled entry points of method handle intrinsics |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2652 // 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
twisti
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6197
diff
changeset
|
2653 const bool is_outgoing = method->is_method_handle_intrinsic(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2654 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
|
742
45463a04ca27
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|
2655 |
|
45463a04ca27
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diff
changeset
|
2656 // Generate the compiled-to-native wrapper code |
| 17625 | 2657 nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type); |
| 2658 | |
| 2659 if (nm != NULL) { | |
| 2660 method->set_code(method, nm); | |
| 2661 } | |
| 0 | 2662 } |
| 17625 | 2663 } // Unlock AdapterHandlerLibrary_lock |
| 2664 | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2665 |
| 0 | 2666 // Install the generated code. |
| 2667 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2668 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2669 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2670 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
|
2671 } |
| 0 | 2672 nm->post_compiled_method_load_event(); |
| 2673 } else { | |
| 2674 // CodeCache is full, disable compilation | |
| 1202 | 2675 CompileBroker::handle_full_code_cache(); |
| 0 | 2676 } |
| 2677 } | |
| 2678 | |
|
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2679 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
|
2680 assert(thread == JavaThread::current(), "must be"); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2681 // 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
|
2682 // _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
|
2683 // 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
|
2684 // until needs_gc has been cleared. |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2685 if (thread->in_critical()) { |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2686 return; |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2687 } |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2688 // 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
|
2689 GC_locker::lock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2690 GC_locker::unlock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2691 JRT_END |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2692 |
|
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2693 #ifdef HAVE_DTRACE_H |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2694 // Create a dtrace nmethod for this method. The wrapper converts the |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2695 // java compiled calling convention to the native convention, makes a dummy call |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2696 // (actually nops for the size of the call instruction, which become a trap if |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2697 // probe is enabled). The returns to the caller. Since this all looks like a |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2698 // leaf no thread transition is needed. |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2699 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2700 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2701 ResourceMark rm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2702 nmethod* nm = NULL; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2703 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2704 if (PrintCompilation) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2705 ttyLocker ttyl; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2706 tty->print("--- n%s "); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2707 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
|
2708 if (method->is_static()) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2709 tty->print(" (static)"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2710 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2711 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2712 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2713 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2714 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2715 // 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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|
2716 // outside the lock |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2717 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2718 // 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
|
2719 nm = method->code(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2720 if (nm) { |
|
018d5b58dd4f
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diff
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|
2721 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2722 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2723 |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2724 ResourceMark rm; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2725 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2726 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2727 if (buf != NULL) { |
| 1748 | 2728 CodeBuffer buffer(buf); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2729 // Need a few relocation entries |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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diff
changeset
|
2730 double locs_buf[20]; |
|
45463a04ca27
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changeset
|
2731 buffer.insts()->initialize_shared_locs( |
|
116
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|
2732 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
742
45463a04ca27
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|
2733 MacroAssembler _masm(&buffer); |
|
116
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|
2734 |
|
742
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changeset
|
2735 // Generate the compiled-to-native wrapper code |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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changeset
|
2736 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
|
45463a04ca27
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|
2737 } |
|
116
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|
2738 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2739 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2740 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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changeset
|
2741 |
|
018d5b58dd4f
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|
2742 // the dtrace method needs to convert java lang string to utf8 string. |
|
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2743 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
|
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2744 typeArrayOop jlsValue = java_lang_String::value(src); |
|
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2745 int jlsOffset = java_lang_String::offset(src); |
|
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2746 int jlsLen = java_lang_String::length(src); |
|
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|
2747 jchar* jlsPos = (jlsLen == 0) ? NULL : |
|
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|
2748 jlsValue->char_at_addr(jlsOffset); |
|
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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|
2749 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
116
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|
2750 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
|
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|
2751 } |
|
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|
2752 #endif // ndef HAVE_DTRACE_H |
|
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|
2753 |
|
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|
2754 int SharedRuntime::convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt) { |
|
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|
2755 int argcnt = in_args_count; |
|
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|
2756 if (CCallingConventionRequiresIntsAsLongs) { |
|
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|
2757 for (int in = 0; in < in_args_count; in++) { |
|
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|
2758 BasicType bt = in_sig_bt[in]; |
|
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|
2759 switch (bt) { |
|
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|
2760 case T_BOOLEAN: |
|
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|
2761 case T_CHAR: |
|
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|
2762 case T_BYTE: |
|
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|
2763 case T_SHORT: |
|
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|
2764 case T_INT: |
|
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|
2765 argcnt++; |
|
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|
2766 break; |
|
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|
2767 default: |
|
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|
2768 break; |
|
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|
2769 } |
|
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|
2770 } |
|
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|
2771 } else { |
|
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|
2772 assert(0, "This should not be needed on this platform"); |
|
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|
2773 } |
|
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diff
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|
2774 |
|
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|
2775 return argcnt; |
|
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|
2776 } |
|
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|
2777 |
|
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|
2778 void SharedRuntime::convert_ints_to_longints(int i2l_argcnt, int& in_args_count, |
|
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|
2779 BasicType*& in_sig_bt, VMRegPair*& in_regs) { |
|
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|
2780 if (CCallingConventionRequiresIntsAsLongs) { |
|
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|
2781 VMRegPair *new_in_regs = NEW_RESOURCE_ARRAY(VMRegPair, i2l_argcnt); |
|
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|
2782 BasicType *new_in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, i2l_argcnt); |
|
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|
2783 |
|
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|
2784 int argcnt = 0; |
|
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|
2785 for (int in = 0; in < in_args_count; in++, argcnt++) { |
|
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|
2786 BasicType bt = in_sig_bt[in]; |
|
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|
2787 VMRegPair reg = in_regs[in]; |
|
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|
2788 switch (bt) { |
|
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|
2789 case T_BOOLEAN: |
|
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|
2790 case T_CHAR: |
|
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|
2791 case T_BYTE: |
|
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|
2792 case T_SHORT: |
|
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|
2793 case T_INT: |
|
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|
2794 // Convert (bt) to (T_LONG,bt). |
|
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|
2795 new_in_sig_bt[argcnt ] = T_LONG; |
|
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|
2796 new_in_sig_bt[argcnt+1] = bt; |
|
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|
2797 assert(reg.first()->is_valid() && !reg.second()->is_valid(), ""); |
|
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|
2798 new_in_regs[argcnt ].set2(reg.first()); |
|
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|
2799 new_in_regs[argcnt+1].set_bad(); |
|
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|
2800 argcnt++; |
|
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|
2801 break; |
|
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|
2802 default: |
|
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|
2803 // No conversion needed. |
|
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|
2804 new_in_sig_bt[argcnt] = bt; |
|
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|
2805 new_in_regs[argcnt] = reg; |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2806 break; |
|
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|
2807 } |
|
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|
2808 } |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2809 assert(argcnt == i2l_argcnt, "must match"); |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2810 |
|
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8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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changeset
|
2811 in_regs = new_in_regs; |
|
cfd05ec74089
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|
2812 in_sig_bt = new_in_sig_bt; |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2813 in_args_count = i2l_argcnt; |
|
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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|
2814 } else { |
|
cfd05ec74089
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diff
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|
2815 assert(0, "This should not be needed on this platform"); |
|
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|
2816 } |
|
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|
2817 } |
|
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|
2818 |
| 0 | 2819 // ------------------------------------------------------------------------- |
| 2820 // Java-Java calling convention | |
| 2821 // (what you use when Java calls Java) | |
| 2822 | |
| 2823 //------------------------------name_for_receiver---------------------------------- | |
| 2824 // For a given signature, return the VMReg for parameter 0. | |
| 2825 VMReg SharedRuntime::name_for_receiver() { | |
| 2826 VMRegPair regs; | |
| 2827 BasicType sig_bt = T_OBJECT; | |
| 2828 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2829 // Return argument 0 register. In the LP64 build pointers | |
| 2830 // take 2 registers, but the VM wants only the 'main' name. | |
| 2831 return regs.first(); | |
| 2832 } | |
| 2833 | |
| 10390 | 2834 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
| 0 | 2835 // This method is returning a data structure allocating as a |
| 2836 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2837 char *s = sig->as_C_string(); | |
| 2838 int len = (int)strlen(s); | |
|
10973
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|
2839 s++; len--; // Skip opening paren |
| 0 | 2840 char *t = s+len; |
| 2841 while( *(--t) != ')' ) ; // Find close paren | |
| 2842 | |
| 2843 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2844 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2845 int cnt = 0; | |
|
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1135
diff
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|
2846 if (has_receiver) { |
| 0 | 2847 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2848 } | |
| 2849 | |
| 2850 while( s < t ) { | |
| 2851 switch( *s++ ) { // Switch on signature character | |
| 2852 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2853 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2854 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2855 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2856 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2857 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2858 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2859 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2860 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2861 case 'L': // Oop | |
| 2862 while( *s++ != ';' ) ; // Skip signature | |
| 2863 sig_bt[cnt++] = T_OBJECT; | |
| 2864 break; | |
| 2865 case '[': { // Array | |
| 2866 do { // Skip optional size | |
| 2867 while( *s >= '0' && *s <= '9' ) s++; | |
| 2868 } while( *s++ == '[' ); // Nested arrays? | |
| 2869 // Skip element type | |
| 2870 if( s[-1] == 'L' ) | |
| 2871 while( *s++ != ';' ) ; // Skip signature | |
| 2872 sig_bt[cnt++] = T_ARRAY; | |
| 2873 break; | |
| 2874 } | |
| 2875 default : ShouldNotReachHere(); | |
| 2876 } | |
| 2877 } | |
| 10390 | 2878 |
| 2879 if (has_appendix) { | |
| 2880 sig_bt[cnt++] = T_OBJECT; | |
| 2881 } | |
| 2882 | |
| 0 | 2883 assert( cnt < 256, "grow table size" ); |
| 2884 | |
| 2885 int comp_args_on_stack; | |
| 2886 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2887 | |
| 2888 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2889 // we must add that in to get "true" stack offsets. | |
| 2890 | |
| 2891 if (comp_args_on_stack) { | |
| 2892 for (int i = 0; i < cnt; i++) { | |
| 2893 VMReg reg1 = regs[i].first(); | |
| 2894 if( reg1->is_stack()) { | |
| 2895 // Yuck | |
| 2896 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2897 } | |
| 2898 VMReg reg2 = regs[i].second(); | |
| 2899 if( reg2->is_stack()) { | |
| 2900 // Yuck | |
| 2901 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2902 } | |
| 2903 regs[i].set_pair(reg2, reg1); | |
| 2904 } | |
| 2905 } | |
| 2906 | |
| 2907 // results | |
| 2908 *arg_size = cnt; | |
| 2909 return regs; | |
| 2910 } | |
| 2911 | |
| 2912 // OSR Migration Code | |
| 2913 // | |
| 2914 // This code is used convert interpreter frames into compiled frames. It is | |
| 2915 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2916 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2917 // active locks are inflated to allow them to move. The displaced headers and | |
| 2918 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2919 // back to the compiled code. The compiled code then pops the current | |
| 2920 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2921 // copies the interpreter locals and displaced headers where it wants. | |
| 2922 // Finally it calls back to free the temp buffer. | |
| 2923 // | |
| 2924 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2925 | |
| 2926 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2927 | |
| 2928 // | |
| 2929 // This code is dependent on the memory layout of the interpreter local | |
| 2930 // array and the monitors. On all of our platforms the layout is identical | |
| 2931 // so this code is shared. If some platform lays the their arrays out | |
| 2932 // differently then this code could move to platform specific code or | |
| 2933 // the code here could be modified to copy items one at a time using | |
| 2934 // frame accessor methods and be platform independent. | |
| 2935 | |
| 2936 frame fr = thread->last_frame(); | |
| 2937 assert( fr.is_interpreted_frame(), "" ); | |
| 2938 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2939 | |
| 2940 // Figure out how many monitors are active. | |
| 2941 int active_monitor_count = 0; | |
| 2942 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2943 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2944 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2945 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2946 } | |
| 2947 | |
| 2948 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2949 // could double check it. | |
| 2950 | |
|
6725
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|
2951 Method* moop = fr.interpreter_frame_method(); |
| 0 | 2952 int max_locals = moop->max_locals(); |
| 2953 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2954 int buf_size_words = max_locals + active_monitor_count*2; | |
| 6197 | 2955 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
| 0 | 2956 |
| 2957 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2958 // Since there's no GC I can copy the oops blindly. | |
| 2959 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2960 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2961 (HeapWord*)&buf[0], |
| 2962 max_locals); | |
| 2963 | |
| 2964 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2965 int i = max_locals; | |
| 2966 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2967 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2968 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2969 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2970 BasicLock *lock = kptr2->lock(); | |
| 2971 // Inflate so the displaced header becomes position-independent | |
| 2972 if (lock->displaced_header()->is_unlocked()) | |
| 2973 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2974 // Now the displaced header is free to move | |
| 2975 buf[i++] = (intptr_t)lock->displaced_header(); | |
|
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2976 buf[i++] = cast_from_oop<intptr_t>(kptr2->obj()); |
| 0 | 2977 } |
| 2978 } | |
| 2979 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2980 | |
| 2981 return buf; | |
| 2982 JRT_END | |
| 2983 | |
| 2984 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 6197 | 2985 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
| 0 | 2986 JRT_END |
| 2987 | |
| 2988 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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2989 AdapterHandlerTableIterator iter(_adapters); |
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2990 while (iter.has_next()) { |
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2991 AdapterHandlerEntry* a = iter.next(); |
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2992 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 2993 } |
| 2994 return false; | |
| 2995 } | |
| 2996 | |
|
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2997 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
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2998 AdapterHandlerTableIterator iter(_adapters); |
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2999 while (iter.has_next()) { |
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3000 AdapterHandlerEntry* a = iter.next(); |
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3001 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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3002 st->print("Adapter for signature: "); |
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3003 a->print_adapter_on(tty); |
| 0 | 3004 return; |
| 3005 } | |
| 3006 } | |
| 3007 assert(false, "Should have found handler"); | |
| 3008 } | |
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3009 |
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3010 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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3011 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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3012 (intptr_t) this, fingerprint()->as_string(), |
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3013 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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3014 |
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3015 } |
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3016 |
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3017 #ifndef PRODUCT |
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3018 |
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3019 void AdapterHandlerLibrary::print_statistics() { |
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3020 _adapters->print_statistics(); |
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3021 } |
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3022 |
| 0 | 3023 #endif /* PRODUCT */ |