Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 10973:ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
Reviewed-by: dholmes, coleenp
Contributed-by: jeremymanson@google.com, calvin.cheung@oracle.com
| author | ccheung |
|---|---|
| date | Thu, 13 Jun 2013 22:02:40 -0700 |
| parents | 28e5aed7f3a6 |
| children | 9ba41a4a71ff f4f6ae481e1a |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "code/compiledIC.hpp" | |
| 29 #include "code/scopeDesc.hpp" | |
| 30 #include "code/vtableStubs.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
| 32 #include "compiler/compileBroker.hpp" | |
| 33 #include "compiler/compilerOracle.hpp" | |
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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::_ic_miss_blob; |
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88 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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89 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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90 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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91 |
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92 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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93 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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94 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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95 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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96 |
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97 #ifdef COMPILER2 |
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98 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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99 #endif // COMPILER2 |
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100 |
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101 |
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102 //----------------------------generate_stubs----------------------------------- |
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103 void SharedRuntime::generate_stubs() { |
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104 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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105 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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106 _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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107 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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108 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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109 |
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110 #ifdef COMPILER2 |
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111 // Vectors are generated only by C2. |
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112 if (is_wide_vector(MaxVectorSize)) { |
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113 _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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114 } |
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115 #endif // COMPILER2 |
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116 _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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117 _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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118 |
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119 generate_deopt_blob(); |
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120 |
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121 #ifdef COMPILER2 |
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122 generate_uncommon_trap_blob(); |
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123 #endif // COMPILER2 |
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124 } |
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125 |
| 0 | 126 #include <math.h> |
| 127 | |
| 4006 | 128 #ifndef USDT2 |
| 0 | 129 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
| 130 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 131 char*, int, char*, int, char*, int); | |
| 132 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 133 char*, int, char*, int, char*, int); | |
| 4006 | 134 #endif /* !USDT2 */ |
| 0 | 135 |
| 136 // Implementation of SharedRuntime | |
| 137 | |
| 138 #ifndef PRODUCT | |
| 139 // For statistics | |
| 140 int SharedRuntime::_ic_miss_ctr = 0; | |
| 141 int SharedRuntime::_wrong_method_ctr = 0; | |
| 142 int SharedRuntime::_resolve_static_ctr = 0; | |
| 143 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 144 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 145 int SharedRuntime::_implicit_null_throws = 0; | |
| 146 int SharedRuntime::_implicit_div0_throws = 0; | |
| 147 int SharedRuntime::_throw_null_ctr = 0; | |
| 148 | |
| 149 int SharedRuntime::_nof_normal_calls = 0; | |
| 150 int SharedRuntime::_nof_optimized_calls = 0; | |
| 151 int SharedRuntime::_nof_inlined_calls = 0; | |
| 152 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 153 int SharedRuntime::_nof_static_calls = 0; | |
| 154 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 155 int SharedRuntime::_nof_interface_calls = 0; | |
| 156 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 157 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 158 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 159 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 160 | |
| 161 int SharedRuntime::_new_instance_ctr=0; | |
| 162 int SharedRuntime::_new_array_ctr=0; | |
| 163 int SharedRuntime::_multi1_ctr=0; | |
| 164 int SharedRuntime::_multi2_ctr=0; | |
| 165 int SharedRuntime::_multi3_ctr=0; | |
| 166 int SharedRuntime::_multi4_ctr=0; | |
| 167 int SharedRuntime::_multi5_ctr=0; | |
| 168 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 169 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 170 int SharedRuntime::_mon_enter_ctr=0; | |
| 171 int SharedRuntime::_mon_exit_ctr=0; | |
| 172 int SharedRuntime::_partial_subtype_ctr=0; | |
| 173 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 174 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 175 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 176 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 177 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 178 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 179 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 180 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 181 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 182 int SharedRuntime::_find_handler_ctr=0; | |
| 183 int SharedRuntime::_rethrow_ctr=0; | |
| 184 | |
| 185 int SharedRuntime::_ICmiss_index = 0; | |
| 186 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 187 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 188 | |
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189 |
| 0 | 190 void SharedRuntime::trace_ic_miss(address at) { |
| 191 for (int i = 0; i < _ICmiss_index; i++) { | |
| 192 if (_ICmiss_at[i] == at) { | |
| 193 _ICmiss_count[i]++; | |
| 194 return; | |
| 195 } | |
| 196 } | |
| 197 int index = _ICmiss_index++; | |
| 198 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 199 _ICmiss_at[index] = at; | |
| 200 _ICmiss_count[index] = 1; | |
| 201 } | |
| 202 | |
| 203 void SharedRuntime::print_ic_miss_histogram() { | |
| 204 if (ICMissHistogram) { | |
| 205 tty->print_cr ("IC Miss Histogram:"); | |
| 206 int tot_misses = 0; | |
| 207 for (int i = 0; i < _ICmiss_index; i++) { | |
| 208 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 209 tot_misses += _ICmiss_count[i]; | |
| 210 } | |
| 211 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 212 } | |
| 213 } | |
| 214 #endif // PRODUCT | |
| 215 | |
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216 #if INCLUDE_ALL_GCS |
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217 |
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218 // G1 write-barrier pre: executed before a pointer store. |
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219 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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220 if (orig == NULL) { |
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221 assert(false, "should be optimized out"); |
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222 return; |
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223 } |
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224 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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225 // store the original value that was in the field reference |
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226 thread->satb_mark_queue().enqueue(orig); |
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227 JRT_END |
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228 |
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229 // G1 write-barrier post: executed after a pointer store. |
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230 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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231 thread->dirty_card_queue().enqueue(card_addr); |
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232 JRT_END |
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233 |
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234 #endif // INCLUDE_ALL_GCS |
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235 |
| 0 | 236 |
| 237 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
| 238 return x * y; | |
| 239 JRT_END | |
| 240 | |
| 241 | |
| 242 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
| 243 if (x == min_jlong && y == CONST64(-1)) { | |
| 244 return x; | |
| 245 } else { | |
| 246 return x / y; | |
| 247 } | |
| 248 JRT_END | |
| 249 | |
| 250 | |
| 251 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
| 252 if (x == min_jlong && y == CONST64(-1)) { | |
| 253 return 0; | |
| 254 } else { | |
| 255 return x % y; | |
| 256 } | |
| 257 JRT_END | |
| 258 | |
| 259 | |
| 260 const juint float_sign_mask = 0x7FFFFFFF; | |
| 261 const juint float_infinity = 0x7F800000; | |
| 262 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
| 263 const julong double_infinity = CONST64(0x7FF0000000000000); | |
| 264 | |
| 265 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
| 266 #ifdef _WIN64 | |
| 267 // 64-bit Windows on amd64 returns the wrong values for | |
| 268 // infinity operands. | |
| 269 union { jfloat f; juint i; } xbits, ybits; | |
| 270 xbits.f = x; | |
| 271 ybits.f = y; | |
| 272 // x Mod Infinity == x unless x is infinity | |
| 273 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
| 274 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
| 275 return x; | |
| 276 } | |
| 277 #endif | |
| 278 return ((jfloat)fmod((double)x,(double)y)); | |
| 279 JRT_END | |
| 280 | |
| 281 | |
| 282 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
| 283 #ifdef _WIN64 | |
| 284 union { jdouble d; julong l; } xbits, ybits; | |
| 285 xbits.d = x; | |
| 286 ybits.d = y; | |
| 287 // x Mod Infinity == x unless x is infinity | |
| 288 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
| 289 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
| 290 return x; | |
| 291 } | |
| 292 #endif | |
| 293 return ((jdouble)fmod((double)x,(double)y)); | |
| 294 JRT_END | |
| 295 | |
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296 #ifdef __SOFTFP__ |
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297 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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298 return x + y; |
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299 JRT_END |
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300 |
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301 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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302 return x - y; |
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303 JRT_END |
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304 |
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305 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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306 return x * y; |
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307 JRT_END |
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308 |
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309 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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310 return x / y; |
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311 JRT_END |
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312 |
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313 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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314 return x + y; |
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315 JRT_END |
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316 |
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317 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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318 return x - y; |
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319 JRT_END |
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320 |
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321 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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322 return x * y; |
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323 JRT_END |
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324 |
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325 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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326 return x / y; |
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327 JRT_END |
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328 |
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329 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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330 return (jfloat)x; |
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331 JRT_END |
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332 |
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333 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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334 return (jdouble)x; |
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335 JRT_END |
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336 |
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337 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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338 return (jdouble)x; |
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339 JRT_END |
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340 |
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341 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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342 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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343 JRT_END |
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344 |
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345 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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346 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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347 JRT_END |
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348 |
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349 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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350 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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351 JRT_END |
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352 |
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353 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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354 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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355 JRT_END |
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356 |
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357 // Functions to return the opposite of the aeabi functions for nan. |
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358 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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359 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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360 JRT_END |
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361 |
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362 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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363 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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364 JRT_END |
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365 |
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366 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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367 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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368 JRT_END |
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369 |
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370 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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371 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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372 JRT_END |
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373 |
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374 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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375 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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376 JRT_END |
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377 |
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378 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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379 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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380 JRT_END |
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381 |
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382 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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383 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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384 JRT_END |
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385 |
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386 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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387 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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388 JRT_END |
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389 |
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390 // Intrinsics make gcc generate code for these. |
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391 float SharedRuntime::fneg(float f) { |
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392 return -f; |
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393 } |
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394 |
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395 double SharedRuntime::dneg(double f) { |
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396 return -f; |
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397 } |
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398 |
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399 #endif // __SOFTFP__ |
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400 |
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401 #if defined(__SOFTFP__) || defined(E500V2) |
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402 // Intrinsics make gcc generate code for these. |
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403 double SharedRuntime::dabs(double f) { |
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404 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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405 } |
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406 |
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407 #endif |
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408 |
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409 #if defined(__SOFTFP__) || defined(PPC) |
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410 double SharedRuntime::dsqrt(double f) { |
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411 return sqrt(f); |
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412 } |
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413 #endif |
| 0 | 414 |
| 415 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
|
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416 if (g_isnan(x)) |
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417 return 0; |
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418 if (x >= (jfloat) max_jint) |
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419 return max_jint; |
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420 if (x <= (jfloat) min_jint) |
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421 return min_jint; |
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422 return (jint) x; |
| 0 | 423 JRT_END |
| 424 | |
| 425 | |
| 426 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
|
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427 if (g_isnan(x)) |
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428 return 0; |
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429 if (x >= (jfloat) max_jlong) |
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430 return max_jlong; |
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431 if (x <= (jfloat) min_jlong) |
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432 return min_jlong; |
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433 return (jlong) x; |
| 0 | 434 JRT_END |
| 435 | |
| 436 | |
| 437 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
|
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438 if (g_isnan(x)) |
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439 return 0; |
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440 if (x >= (jdouble) max_jint) |
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441 return max_jint; |
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442 if (x <= (jdouble) min_jint) |
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443 return min_jint; |
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444 return (jint) x; |
| 0 | 445 JRT_END |
| 446 | |
| 447 | |
| 448 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
|
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449 if (g_isnan(x)) |
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450 return 0; |
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451 if (x >= (jdouble) max_jlong) |
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452 return max_jlong; |
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453 if (x <= (jdouble) min_jlong) |
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454 return min_jlong; |
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455 return (jlong) x; |
| 0 | 456 JRT_END |
| 457 | |
| 458 | |
| 459 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
| 460 return (jfloat)x; | |
| 461 JRT_END | |
| 462 | |
| 463 | |
| 464 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
| 465 return (jfloat)x; | |
| 466 JRT_END | |
| 467 | |
| 468 | |
| 469 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
| 470 return (jdouble)x; | |
| 471 JRT_END | |
| 472 | |
| 473 // Exception handling accross interpreter/compiler boundaries | |
| 474 // | |
| 475 // exception_handler_for_return_address(...) returns the continuation address. | |
| 476 // The continuation address is the entry point of the exception handler of the | |
| 477 // previous frame depending on the return address. | |
| 478 | |
| 1295 | 479 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
|
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480 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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481 |
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482 // Reset method handle flag. |
|
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483 thread->set_is_method_handle_return(false); |
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484 |
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485 // The fastest case first |
| 0 | 486 CodeBlob* blob = CodeCache::find_blob(return_address); |
|
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487 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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488 if (nm != NULL) { |
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489 // Set flag if return address is a method handle call site. |
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490 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
| 0 | 491 // native nmethods don't have exception handlers |
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492 assert(!nm->is_native_method(), "no exception handler"); |
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493 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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494 if (nm->is_deopt_pc(return_address)) { |
| 0 | 495 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
| 496 } else { | |
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497 return nm->exception_begin(); |
| 0 | 498 } |
| 499 } | |
| 500 | |
| 501 // Entry code | |
| 502 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 503 return StubRoutines::catch_exception_entry(); | |
| 504 } | |
| 505 // Interpreted code | |
| 506 if (Interpreter::contains(return_address)) { | |
| 507 return Interpreter::rethrow_exception_entry(); | |
| 508 } | |
| 509 | |
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510 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
| 0 | 511 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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512 |
| 0 | 513 #ifndef PRODUCT |
| 514 { ResourceMark rm; | |
| 515 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 516 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 517 tty->print_cr("b) other problem"); | |
| 518 } | |
| 519 #endif // PRODUCT | |
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520 |
| 0 | 521 ShouldNotReachHere(); |
| 522 return NULL; | |
| 523 } | |
| 524 | |
| 525 | |
| 1295 | 526 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 527 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 528 JRT_END |
| 529 | |
| 1295 | 530 |
| 0 | 531 address SharedRuntime::get_poll_stub(address pc) { |
| 532 address stub; | |
| 533 // Look up the code blob | |
| 534 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 535 | |
| 536 // Should be an nmethod | |
| 537 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 538 | |
| 539 // Look up the relocation information | |
| 540 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 541 "safepoint polling: type must be poll" ); | |
| 542 | |
| 543 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 544 "Only polling locations are used for safepoint"); | |
| 545 | |
| 546 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
|
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547 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
| 0 | 548 if (at_poll_return) { |
| 549 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 550 "polling page return stub not created yet"); | |
| 1748 | 551 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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552 } else if (has_wide_vectors) { |
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553 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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554 "polling page vectors safepoint stub not created yet"); |
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555 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
| 0 | 556 } else { |
| 557 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 558 "polling page safepoint stub not created yet"); | |
| 1748 | 559 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 560 } |
| 561 #ifndef PRODUCT | |
| 562 if( TraceSafepoint ) { | |
| 563 char buf[256]; | |
| 564 jio_snprintf(buf, sizeof(buf), | |
| 565 "... found polling page %s exception at pc = " | |
| 566 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 567 at_poll_return ? "return" : "loop", | |
| 568 (intptr_t)pc, (intptr_t)stub); | |
| 569 tty->print_raw_cr(buf); | |
| 570 } | |
| 571 #endif // PRODUCT | |
| 572 return stub; | |
| 573 } | |
| 574 | |
| 575 | |
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576 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 577 assert(caller.is_interpreted_frame(), ""); |
| 578 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 579 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
| 580 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
| 581 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
| 582 return result; | |
| 583 } | |
| 584 | |
| 585 | |
| 586 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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587 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 588 vframeStream vfst(thread, true); |
| 589 methodHandle method = methodHandle(thread, vfst.method()); | |
| 590 address bcp = method()->bcp_from(vfst.bci()); | |
| 591 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 592 } | |
| 593 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 594 } | |
| 595 | |
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596 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 597 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 598 throw_and_post_jvmti_exception(thread, h_exception); | |
| 599 } | |
| 600 | |
|
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601 // The interpreter code to call this tracing function is only |
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602 // called/generated when TraceRedefineClasses has the right bits |
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603 // set. Since obsolete methods are never compiled, we don't have |
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604 // to modify the compilers to generate calls to this function. |
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605 // |
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606 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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607 JavaThread* thread, Method* method)) |
|
610
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608 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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609 |
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610 if (method->is_obsolete()) { |
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611 // We are calling an obsolete method, but this is not necessarily |
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612 // an error. Our method could have been redefined just after we |
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613 // fetched the Method* from the constant pool. |
|
610
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614 |
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615 // RC_TRACE macro has an embedded ResourceMark |
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616 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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617 ("calling obsolete method '%s'", |
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618 method->name_and_sig_as_C_string())); |
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619 if (RC_TRACE_ENABLED(0x00002000)) { |
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620 // this option is provided to debug calls to obsolete methods |
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621 guarantee(false, "faulting at call to an obsolete method."); |
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622 } |
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623 } |
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624 return 0; |
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625 JRT_END |
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626 |
| 0 | 627 // ret_pc points into caller; we are returning caller's exception handler |
| 628 // for given exception | |
| 629 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 630 bool force_unwind, bool top_frame_only) { | |
| 631 assert(nm != NULL, "must exist"); | |
| 632 ResourceMark rm; | |
| 633 | |
| 634 ScopeDesc* sd = nm->scope_desc_at(ret_pc); | |
| 635 // determine handler bci, if any | |
| 636 EXCEPTION_MARK; | |
| 637 | |
| 638 int handler_bci = -1; | |
| 639 int scope_depth = 0; | |
| 640 if (!force_unwind) { | |
| 641 int bci = sd->bci(); | |
|
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642 bool recursive_exception = false; |
| 0 | 643 do { |
| 644 bool skip_scope_increment = false; | |
| 645 // exception handler lookup | |
| 646 KlassHandle ek (THREAD, exception->klass()); | |
|
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647 methodHandle mh(THREAD, sd->method()); |
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648 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
| 0 | 649 if (HAS_PENDING_EXCEPTION) { |
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650 recursive_exception = true; |
| 0 | 651 // We threw an exception while trying to find the exception handler. |
| 652 // Transfer the new exception to the exception handle which will | |
| 653 // be set into thread local storage, and do another lookup for an | |
| 654 // exception handler for this exception, this time starting at the | |
| 655 // BCI of the exception handler which caused the exception to be | |
| 656 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 657 // argument to ensure that the correct exception is thrown (4870175). | |
| 658 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 659 CLEAR_PENDING_EXCEPTION; | |
| 660 if (handler_bci >= 0) { | |
| 661 bci = handler_bci; | |
| 662 handler_bci = -1; | |
| 663 skip_scope_increment = true; | |
| 664 } | |
| 665 } | |
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666 else { |
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667 recursive_exception = false; |
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668 } |
| 0 | 669 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
| 670 sd = sd->sender(); | |
| 671 if (sd != NULL) { | |
| 672 bci = sd->bci(); | |
| 673 } | |
| 674 ++scope_depth; | |
| 675 } | |
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676 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
| 0 | 677 } |
| 678 | |
| 679 // found handling method => lookup exception handler | |
| 1748 | 680 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 681 |
| 682 ExceptionHandlerTable table(nm); | |
| 683 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 684 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 685 // Allow abbreviated catch tables. The idea is to allow a method | |
| 686 // to materialize its exceptions without committing to the exact | |
| 687 // routing of exceptions. In particular this is needed for adding | |
| 688 // a synthethic handler to unlock monitors when inlining | |
| 689 // synchonized methods since the unlock path isn't represented in | |
| 690 // the bytecodes. | |
| 691 t = table.entry_for(catch_pco, -1, 0); | |
| 692 } | |
| 693 | |
|
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694 #ifdef COMPILER1 |
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695 if (t == NULL && nm->is_compiled_by_c1()) { |
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696 assert(nm->unwind_handler_begin() != NULL, ""); |
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697 return nm->unwind_handler_begin(); |
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698 } |
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699 #endif |
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700 |
| 0 | 701 if (t == NULL) { |
| 702 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 703 tty->print_cr(" Exception:"); | |
| 704 exception->print(); | |
| 705 tty->cr(); | |
| 706 tty->print_cr(" Compiled exception table :"); | |
| 707 table.print(); | |
| 708 nm->print_code(); | |
| 709 guarantee(false, "missing exception handler"); | |
| 710 return NULL; | |
| 711 } | |
| 712 | |
| 1748 | 713 return nm->code_begin() + t->pco(); |
| 0 | 714 } |
| 715 | |
| 716 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 717 // These errors occur only at call sites | |
| 718 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 719 JRT_END | |
| 720 | |
|
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721 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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722 // These errors occur only at call sites |
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723 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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724 JRT_END |
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725 |
| 0 | 726 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 727 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 728 JRT_END | |
| 729 | |
| 730 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 731 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 732 JRT_END | |
| 733 | |
| 734 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 735 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 736 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 737 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 738 JRT_END | |
| 739 | |
| 740 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 741 // We avoid using the normal exception construction in this case because | |
| 742 // it performs an upcall to Java, and we're already out of stack space. | |
|
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743 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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744 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
| 0 | 745 Handle exception (thread, exception_oop); |
| 746 if (StackTraceInThrowable) { | |
| 747 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 748 } | |
| 749 throw_and_post_jvmti_exception(thread, exception); | |
| 750 JRT_END | |
| 751 | |
| 752 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, | |
| 753 address pc, | |
| 754 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 755 { | |
| 756 address target_pc = NULL; | |
| 757 | |
| 758 if (Interpreter::contains(pc)) { | |
| 759 #ifdef CC_INTERP | |
| 760 // C++ interpreter doesn't throw implicit exceptions | |
| 761 ShouldNotReachHere(); | |
| 762 #else | |
| 763 switch (exception_kind) { | |
| 764 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 765 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 766 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 767 default: ShouldNotReachHere(); | |
| 768 } | |
| 769 #endif // !CC_INTERP | |
| 770 } else { | |
| 771 switch (exception_kind) { | |
| 772 case STACK_OVERFLOW: { | |
| 773 // Stack overflow only occurs upon frame setup; the callee is | |
| 774 // going to be unwound. Dispatch to a shared runtime stub | |
| 775 // which will cause the StackOverflowError to be fabricated | |
| 776 // and processed. | |
| 777 // For stack overflow in deoptimization blob, cleanup thread. | |
| 778 if (thread->deopt_mark() != NULL) { | |
| 779 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 780 } | |
| 4944 | 781 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
| 0 | 782 return StubRoutines::throw_StackOverflowError_entry(); |
| 783 } | |
| 784 | |
| 785 case IMPLICIT_NULL: { | |
| 786 if (VtableStubs::contains(pc)) { | |
| 787 // We haven't yet entered the callee frame. Fabricate an | |
| 788 // exception and begin dispatching it in the caller. Since | |
| 789 // the caller was at a call site, it's safe to destroy all | |
| 790 // caller-saved registers, as these entry points do. | |
| 791 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
|
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792 |
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793 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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794 if (vt_stub == NULL) return NULL; |
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795 |
| 0 | 796 if (vt_stub->is_abstract_method_error(pc)) { |
| 797 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 4944 | 798 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
| 0 | 799 return StubRoutines::throw_AbstractMethodError_entry(); |
| 800 } else { | |
| 4944 | 801 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
| 0 | 802 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 803 } | |
| 804 } else { | |
| 805 CodeBlob* cb = CodeCache::find_blob(pc); | |
|
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806 |
|
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807 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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808 if (cb == NULL) return NULL; |
| 0 | 809 |
| 810 // Exception happened in CodeCache. Must be either: | |
| 811 // 1. Inline-cache check in C2I handler blob, | |
| 812 // 2. Inline-cache check in nmethod, or | |
| 813 // 3. Implict null exception in nmethod | |
| 814 | |
| 815 if (!cb->is_nmethod()) { | |
|
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816 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
|
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817 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
| 4944 | 818 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
| 0 | 819 // There is no handler here, so we will simply unwind. |
| 820 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 821 } | |
| 822 | |
| 823 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 824 nmethod* nm = (nmethod*)cb; | |
| 825 if (nm->inlinecache_check_contains(pc)) { | |
| 826 // exception happened inside inline-cache check code | |
| 827 // => the nmethod is not yet active (i.e., the frame | |
| 828 // is not set up yet) => use return address pushed by | |
| 829 // caller => don't push another return address | |
| 4944 | 830 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
| 0 | 831 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 832 } | |
| 833 | |
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834 if (nm->method()->is_method_handle_intrinsic()) { |
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835 // exception happened inside MH dispatch code, similar to a vtable stub |
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836 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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837 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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838 } |
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839 |
| 0 | 840 #ifndef PRODUCT |
| 841 _implicit_null_throws++; | |
| 842 #endif | |
| 843 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 844 // If there's an unexpected fault, target_pc might be NULL, |
| 845 // in which case we want to fall through into the normal | |
| 846 // error handling code. | |
| 0 | 847 } |
| 848 | |
| 849 break; // fall through | |
| 850 } | |
| 851 | |
| 852 | |
| 853 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 854 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 855 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 856 #ifndef PRODUCT | |
| 857 _implicit_div0_throws++; | |
| 858 #endif | |
| 859 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 860 // If there's an unexpected fault, target_pc might be NULL, |
| 861 // in which case we want to fall through into the normal | |
| 862 // error handling code. | |
| 0 | 863 break; // fall through |
| 864 } | |
| 865 | |
| 866 default: ShouldNotReachHere(); | |
| 867 } | |
| 868 | |
| 869 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 870 | |
| 871 // for AbortVMOnException flag | |
| 872 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 873 if (exception_kind == IMPLICIT_NULL) { | |
|
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874 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 875 } else { |
|
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876 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 877 } |
| 878 return target_pc; | |
| 879 } | |
| 880 | |
| 881 ShouldNotReachHere(); | |
| 882 return NULL; | |
| 883 } | |
| 884 | |
| 885 | |
|
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886 /** |
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887 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
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888 * installed in the native function entry of all native Java methods before |
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889 * they get linked to their actual native methods. |
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890 * |
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891 * \note |
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892 * This method actually never gets called! The reason is because |
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893 * the interpreter's native entries call NativeLookup::lookup() which |
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894 * throws the exception when the lookup fails. The exception is then |
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895 * caught and forwarded on the return from NativeLookup::lookup() call |
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896 * before the call to the native function. This might change in the future. |
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897 */ |
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898 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
| 0 | 899 { |
|
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900 // We return a bad value here to make sure that the exception is |
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901 // forwarded before we look at the return value. |
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902 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
|
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903 } |
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904 JNI_END |
| 0 | 905 |
| 906 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 907 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 908 } | |
| 909 | |
| 910 | |
| 911 #ifndef PRODUCT | |
| 912 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 913 const frame f = thread->last_frame(); | |
| 914 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 915 #ifndef PRODUCT | |
| 916 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 917 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 918 #endif // !PRODUCT | |
| 919 return preserve_this_value; | |
| 920 JRT_END | |
| 921 #endif // !PRODUCT | |
| 922 | |
| 923 | |
| 924 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 925 os::yield_all(attempts); | |
| 926 JRT_END | |
| 927 | |
| 928 | |
| 929 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 930 assert(obj->is_oop(), "must be a valid oop"); | |
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931 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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932 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 933 JRT_END |
| 934 | |
| 935 | |
| 936 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 937 if (thread != NULL) { | |
| 938 if (thread->is_Java_thread()) { | |
| 939 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 940 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 941 } | |
| 942 } | |
| 943 return 0; | |
| 944 } | |
| 945 | |
| 946 /** | |
| 947 * This function ought to be a void function, but cannot be because | |
| 948 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 949 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 950 */ | |
| 951 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 952 return dtrace_object_alloc_base(Thread::current(), o); | |
| 953 } | |
| 954 | |
| 955 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 956 assert(DTraceAllocProbes, "wrong call"); | |
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957 Klass* klass = o->klass(); |
| 0 | 958 int size = o->size(); |
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959 Symbol* name = klass->name(); |
| 4006 | 960 #ifndef USDT2 |
| 0 | 961 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 962 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 4006 | 963 #else /* USDT2 */ |
| 964 HOTSPOT_OBJECT_ALLOC( | |
| 965 get_java_tid(thread), | |
| 966 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 967 #endif /* USDT2 */ | |
| 0 | 968 return 0; |
| 969 } | |
| 970 | |
| 971 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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972 JavaThread* thread, Method* method)) |
| 0 | 973 assert(DTraceMethodProbes, "wrong call"); |
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974 Symbol* kname = method->klass_name(); |
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975 Symbol* name = method->name(); |
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976 Symbol* sig = method->signature(); |
| 4006 | 977 #ifndef USDT2 |
| 0 | 978 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 979 kname->bytes(), kname->utf8_length(), | |
| 980 name->bytes(), name->utf8_length(), | |
| 981 sig->bytes(), sig->utf8_length()); | |
| 4006 | 982 #else /* USDT2 */ |
| 983 HOTSPOT_METHOD_ENTRY( | |
| 984 get_java_tid(thread), | |
| 985 (char *) kname->bytes(), kname->utf8_length(), | |
| 986 (char *) name->bytes(), name->utf8_length(), | |
| 987 (char *) sig->bytes(), sig->utf8_length()); | |
| 988 #endif /* USDT2 */ | |
| 0 | 989 return 0; |
| 990 JRT_END | |
| 991 | |
| 992 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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993 JavaThread* thread, Method* method)) |
| 0 | 994 assert(DTraceMethodProbes, "wrong call"); |
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995 Symbol* kname = method->klass_name(); |
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996 Symbol* name = method->name(); |
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997 Symbol* sig = method->signature(); |
| 4006 | 998 #ifndef USDT2 |
| 0 | 999 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 1000 kname->bytes(), kname->utf8_length(), | |
| 1001 name->bytes(), name->utf8_length(), | |
| 1002 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1003 #else /* USDT2 */ |
| 1004 HOTSPOT_METHOD_RETURN( | |
| 1005 get_java_tid(thread), | |
| 1006 (char *) kname->bytes(), kname->utf8_length(), | |
| 1007 (char *) name->bytes(), name->utf8_length(), | |
| 1008 (char *) sig->bytes(), sig->utf8_length()); | |
| 1009 #endif /* USDT2 */ | |
| 0 | 1010 return 0; |
| 1011 JRT_END | |
| 1012 | |
| 1013 | |
| 1014 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 1015 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1016 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 1017 // vtable updates, etc. Caller frame must be compiled. | |
| 1018 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 1019 ResourceMark rm(THREAD); | |
| 1020 | |
| 1021 // last java frame on stack (which includes native call frames) | |
| 1022 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 1023 | |
| 1024 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 1025 } | |
| 1026 | |
| 1027 | |
| 1028 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 1029 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1030 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 1031 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1032 vframeStream& vfst, | |
| 1033 Bytecodes::Code& bc, | |
| 1034 CallInfo& callinfo, TRAPS) { | |
| 1035 Handle receiver; | |
| 1036 Handle nullHandle; //create a handy null handle for exception returns | |
| 1037 | |
| 1038 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1039 | |
| 1040 // Find caller and bci from vframe | |
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1041 methodHandle caller(THREAD, vfst.method()); |
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1042 int bci = vfst.bci(); |
| 0 | 1043 |
| 1044 // Find bytecode | |
| 2142 | 1045 Bytecode_invoke bytecode(caller, bci); |
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1046 bc = bytecode.invoke_code(); |
| 2142 | 1047 int bytecode_index = bytecode.index(); |
| 0 | 1048 |
| 1049 // Find receiver for non-static call | |
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1050 if (bc != Bytecodes::_invokestatic && |
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1051 bc != Bytecodes::_invokedynamic) { |
| 0 | 1052 // This register map must be update since we need to find the receiver for |
| 1053 // compiled frames. The receiver might be in a register. | |
| 1054 RegisterMap reg_map2(thread); | |
| 1055 frame stubFrame = thread->last_frame(); | |
| 1056 // Caller-frame is a compiled frame | |
| 1057 frame callerFrame = stubFrame.sender(®_map2); | |
| 1058 | |
| 2142 | 1059 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1060 if (callee.is_null()) { |
| 1061 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1062 } | |
| 1063 // Retrieve from a compiled argument list | |
| 1064 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1065 | |
| 1066 if (receiver.is_null()) { | |
| 1067 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1068 } | |
| 1069 } | |
| 1070 | |
| 1071 // Resolve method. This is parameterized by bytecode. | |
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1072 constantPoolHandle constants(THREAD, caller->constants()); |
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1073 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
| 0 | 1074 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
| 1075 | |
| 1076 #ifdef ASSERT | |
| 1077 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1078 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
| 0 | 1079 assert(receiver.not_null(), "should have thrown exception"); |
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1080 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1081 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
| 0 | 1082 // klass is already loaded |
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1083 KlassHandle static_receiver_klass(THREAD, rk); |
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1084 // Method handle invokes might have been optimized to a direct call |
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1085 // so don't check for the receiver class. |
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1086 // FIXME this weakens the assert too much |
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1087 methodHandle callee = callinfo.selected_method(); |
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1088 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1089 callee->is_method_handle_intrinsic() || |
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1090 callee->is_compiled_lambda_form(), |
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1091 "actual receiver must be subclass of static receiver klass"); |
| 0 | 1092 if (receiver_klass->oop_is_instance()) { |
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1093 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
| 0 | 1094 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1095 receiver_klass()->print(); |
| 0 | 1096 } |
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1097 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
| 0 | 1098 } |
| 1099 } | |
| 1100 #endif | |
| 1101 | |
| 1102 return receiver; | |
| 1103 } | |
| 1104 | |
| 1105 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1106 ResourceMark rm(THREAD); | |
| 1107 // We need first to check if any Java activations (compiled, interpreted) | |
| 1108 // exist on the stack since last JavaCall. If not, we need | |
| 1109 // to get the target method from the JavaCall wrapper. | |
| 1110 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1111 methodHandle callee_method; | |
| 1112 if (vfst.at_end()) { | |
| 1113 // No Java frames were found on stack since we did the JavaCall. | |
| 1114 // Hence the stack can only contain an entry_frame. We need to | |
| 1115 // find the target method from the stub frame. | |
| 1116 RegisterMap reg_map(thread, false); | |
| 1117 frame fr = thread->last_frame(); | |
| 1118 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1119 fr = fr.sender(®_map); | |
| 1120 assert(fr.is_entry_frame(), "must be"); | |
| 1121 // fr is now pointing to the entry frame. | |
| 1122 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1123 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1124 } else { | |
| 1125 Bytecodes::Code bc; | |
| 1126 CallInfo callinfo; | |
| 1127 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1128 callee_method = callinfo.selected_method(); | |
| 1129 } | |
| 1130 assert(callee_method()->is_method(), "must be"); | |
| 1131 return callee_method; | |
| 1132 } | |
| 1133 | |
| 1134 // Resolves a call. | |
| 1135 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1136 bool is_virtual, | |
| 1137 bool is_optimized, TRAPS) { | |
| 1138 methodHandle callee_method; | |
| 1139 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1140 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1141 int retry_count = 0; | |
| 1142 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1143 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1144 // If has a pending exception then there is no need to re-try to |
| 1145 // resolve this method. | |
| 1146 // If the method has been redefined, we need to try again. | |
| 1147 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1148 // require that java.lang.Object has been updated. | |
| 1149 | |
| 1150 // It is very unlikely that method is redefined more than 100 times | |
| 1151 // in the middle of resolve. If it is looping here more than 100 times | |
| 1152 // means then there could be a bug here. | |
| 1153 guarantee((retry_count++ < 100), | |
| 1154 "Could not resolve to latest version of redefined method"); | |
| 1155 // method is redefined in the middle of resolve so re-try. | |
| 1156 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1157 } | |
| 1158 } | |
| 1159 return callee_method; | |
| 1160 } | |
| 1161 | |
| 1162 // Resolves a call. The compilers generate code for calls that go here | |
| 1163 // and are patched with the real destination of the call. | |
| 1164 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1165 bool is_virtual, | |
| 1166 bool is_optimized, TRAPS) { | |
| 1167 | |
| 1168 ResourceMark rm(thread); | |
| 1169 RegisterMap cbl_map(thread, false); | |
| 1170 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1171 | |
| 1295 | 1172 CodeBlob* caller_cb = caller_frame.cb(); |
| 1173 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1174 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 0 | 1175 // make sure caller is not getting deoptimized |
| 1176 // and removed before we are done with it. | |
| 1177 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1178 nmethodLocker caller_lock(caller_nm); |
| 0 | 1179 |
| 1180 | |
| 1181 // determine call info & receiver | |
| 1182 // note: a) receiver is NULL for static calls | |
| 1183 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1184 CallInfo call_info; | |
| 1185 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1186 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1187 call_info, CHECK_(methodHandle())); | |
| 1188 methodHandle callee_method = call_info.selected_method(); | |
| 1189 | |
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1190 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1191 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1192 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1193 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
| 0 | 1194 |
| 1195 #ifndef PRODUCT | |
| 1196 // tracing/debugging/statistics | |
| 1197 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1198 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1199 (&_resolve_static_ctr); | |
| 1200 Atomic::inc(addr); | |
| 1201 | |
| 1202 if (TraceCallFixup) { | |
| 1203 ResourceMark rm(thread); | |
| 1204 tty->print("resolving %s%s (%s) call to", | |
| 1205 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1206 Bytecodes::name(invoke_code)); | |
| 1207 callee_method->print_short_name(tty); | |
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1208 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
| 0 | 1209 } |
| 1210 #endif | |
| 1211 | |
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1212 // JSR 292 key invariant: |
| 1295 | 1213 // If the resolved method is a MethodHandle invoke target the call |
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1214 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1215 // leaving the stack in a state unknown to either caller or callee |
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1216 // TODO detune for now but we might need it again |
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1217 // assert(!callee_method->is_compiled_lambda_form() || |
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1218 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
| 1295 | 1219 |
| 0 | 1220 // Compute entry points. This might require generation of C2I converter |
| 1221 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1222 // computation of the entry points is independent of patching the call. We | |
| 1223 // always return the entry-point, but we only patch the stub if the call has | |
| 1224 // not been deoptimized. Return values: For a virtual call this is an | |
| 1225 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1226 // virtual this is just a destination address. | |
| 1227 | |
| 1228 StaticCallInfo static_call_info; | |
| 1229 CompiledICInfo virtual_call_info; | |
| 1230 | |
| 1231 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1232 // we are done patching the code. | |
| 1295 | 1233 nmethod* callee_nm = callee_method->code(); |
| 1234 nmethodLocker nl_callee(callee_nm); | |
| 0 | 1235 #ifdef ASSERT |
| 1295 | 1236 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1237 #endif |
| 1238 | |
| 1239 if (is_virtual) { | |
| 1240 assert(receiver.not_null(), "sanity check"); | |
| 1241 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
| 1242 KlassHandle h_klass(THREAD, receiver->klass()); | |
| 1243 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
| 1244 is_optimized, static_bound, virtual_call_info, | |
| 1245 CHECK_(methodHandle())); | |
| 1246 } else { | |
| 1247 // static call | |
| 1248 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1249 } | |
| 1250 | |
| 1251 // grab lock, check for deoptimization and potentially patch caller | |
| 1252 { | |
| 1253 MutexLocker ml_patch(CompiledIC_lock); | |
| 1254 | |
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1255 // Now that we are ready to patch if the Method* was redefined then |
| 0 | 1256 // don't update call site and let the caller retry. |
| 1257 | |
| 1258 if (!callee_method->is_old()) { | |
| 1259 #ifdef ASSERT | |
| 1260 // We must not try to patch to jump to an already unloaded method. | |
| 1261 if (dest_entry_point != 0) { | |
| 1262 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
| 1263 "should not unload nmethod while locked"); | |
| 1264 } | |
| 1265 #endif | |
| 1266 if (is_virtual) { | |
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1267 nmethod* nm = callee_nm; |
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1268 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1269 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
| 0 | 1270 if (inline_cache->is_clean()) { |
| 1271 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1272 } | |
| 1273 } else { | |
| 1274 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1275 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1276 } | |
| 1277 } | |
| 1278 | |
| 1279 } // unlock CompiledIC_lock | |
| 1280 | |
| 1281 return callee_method; | |
| 1282 } | |
| 1283 | |
| 1284 | |
| 1285 // Inline caches exist only in compiled code | |
| 1286 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1287 #ifdef ASSERT | |
| 1288 RegisterMap reg_map(thread, false); | |
| 1289 frame stub_frame = thread->last_frame(); | |
| 1290 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1291 frame caller_frame = stub_frame.sender(®_map); | |
| 1292 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
| 1293 #endif /* ASSERT */ | |
| 1294 | |
| 1295 methodHandle callee_method; | |
| 1296 JRT_BLOCK | |
| 1297 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1298 // Return Method* through TLS |
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1299 thread->set_vm_result_2(callee_method()); |
| 0 | 1300 JRT_BLOCK_END |
| 1301 // return compiled code entry point after potential safepoints | |
| 1302 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1303 return callee_method->verified_code_entry(); | |
| 1304 JRT_END | |
| 1305 | |
| 1306 | |
| 1307 // Handle call site that has been made non-entrant | |
| 1308 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1309 // 6243940 We might end up in here if the callee is deoptimized | |
| 1310 // as we race to call it. We don't want to take a safepoint if | |
| 1311 // the caller was interpreted because the caller frame will look | |
| 1312 // interpreted to the stack walkers and arguments are now | |
| 1313 // "compiled" so it is much better to make this transition | |
| 1314 // invisible to the stack walking code. The i2c path will | |
| 1315 // place the callee method in the callee_target. It is stashed | |
| 1316 // there because if we try and find the callee by normal means a | |
| 1317 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1318 RegisterMap reg_map(thread, false); | |
| 1319 frame stub_frame = thread->last_frame(); | |
| 1320 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1321 frame caller_frame = stub_frame.sender(®_map); | |
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1322 |
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1323 if (caller_frame.is_interpreted_frame() || |
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1324 caller_frame.is_entry_frame()) { |
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1325 Method* callee = thread->callee_target(); |
| 0 | 1326 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1327 thread->set_vm_result_2(callee); |
| 0 | 1328 thread->set_callee_target(NULL); |
| 1329 return callee->get_c2i_entry(); | |
| 1330 } | |
| 1331 | |
| 1332 // Must be compiled to compiled path which is safe to stackwalk | |
| 1333 methodHandle callee_method; | |
| 1334 JRT_BLOCK | |
| 1335 // Force resolving of caller (if we called from compiled frame) | |
| 1336 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1337 thread->set_vm_result_2(callee_method()); |
| 0 | 1338 JRT_BLOCK_END |
| 1339 // return compiled code entry point after potential safepoints | |
| 1340 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1341 return callee_method->verified_code_entry(); | |
| 1342 JRT_END | |
| 1343 | |
| 1344 | |
| 1345 // resolve a static call and patch code | |
| 1346 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1347 methodHandle callee_method; | |
| 1348 JRT_BLOCK | |
| 1349 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1350 thread->set_vm_result_2(callee_method()); |
| 0 | 1351 JRT_BLOCK_END |
| 1352 // return compiled code entry point after potential safepoints | |
| 1353 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1354 return callee_method->verified_code_entry(); | |
| 1355 JRT_END | |
| 1356 | |
| 1357 | |
| 1358 // resolve virtual call and update inline cache to monomorphic | |
| 1359 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1360 methodHandle callee_method; | |
| 1361 JRT_BLOCK | |
| 1362 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1363 thread->set_vm_result_2(callee_method()); |
| 0 | 1364 JRT_BLOCK_END |
| 1365 // return compiled code entry point after potential safepoints | |
| 1366 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1367 return callee_method->verified_code_entry(); | |
| 1368 JRT_END | |
| 1369 | |
| 1370 | |
| 1371 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1372 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1373 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1374 methodHandle callee_method; | |
| 1375 JRT_BLOCK | |
| 1376 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1377 thread->set_vm_result_2(callee_method()); |
| 0 | 1378 JRT_BLOCK_END |
| 1379 // return compiled code entry point after potential safepoints | |
| 1380 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1381 return callee_method->verified_code_entry(); | |
| 1382 JRT_END | |
| 1383 | |
| 1384 | |
| 1385 | |
| 1386 | |
| 1387 | |
| 1388 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1389 ResourceMark rm(thread); | |
| 1390 CallInfo call_info; | |
| 1391 Bytecodes::Code bc; | |
| 1392 | |
| 1393 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1394 // receivers for non-static calls | |
| 1395 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1396 CHECK_(methodHandle())); | |
| 1397 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1398 // If we fell thru to below we would think that the site was going megamorphic | |
| 1399 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1400 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1401 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1402 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1403 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1404 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1405 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1406 // | |
| 1407 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1408 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1409 if (TraceCallFixup) { | |
| 1410 RegisterMap reg_map(thread, false); | |
| 1411 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1412 ResourceMark rm(thread); | |
| 1413 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1414 callee_method->print_short_name(tty); | |
| 1415 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1416 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1417 } | |
| 1418 return callee_method; | |
| 1419 } | |
| 1420 | |
| 1421 methodHandle callee_method = call_info.selected_method(); | |
| 1422 | |
| 1423 bool should_be_mono = false; | |
| 1424 | |
| 1425 #ifndef PRODUCT | |
| 1426 Atomic::inc(&_ic_miss_ctr); | |
| 1427 | |
| 1428 // Statistics & Tracing | |
| 1429 if (TraceCallFixup) { | |
| 1430 ResourceMark rm(thread); | |
| 1431 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1432 callee_method->print_short_name(tty); | |
| 1433 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1434 } | |
| 1435 | |
| 1436 if (ICMissHistogram) { | |
| 1437 MutexLocker m(VMStatistic_lock); | |
| 1438 RegisterMap reg_map(thread, false); | |
| 1439 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1440 // produce statistics under the lock | |
| 1441 trace_ic_miss(f.pc()); | |
| 1442 } | |
| 1443 #endif | |
| 1444 | |
| 1445 // install an event collector so that when a vtable stub is created the | |
| 1446 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1447 // event can't be posted when the stub is created as locks are held | |
| 1448 // - instead the event will be deferred until the event collector goes | |
| 1449 // out of scope. | |
| 1450 JvmtiDynamicCodeEventCollector event_collector; | |
| 1451 | |
| 1452 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1453 // made non-entrant or we are called from interpreted. | |
| 1454 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1455 RegisterMap reg_map(thread, false); | |
| 1456 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1457 CodeBlob* cb = caller_frame.cb(); | |
| 1458 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1459 // Not a non-entrant nmethod, so find inline_cache | |
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1460 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
| 0 | 1461 bool should_be_mono = false; |
| 1462 if (inline_cache->is_optimized()) { | |
| 1463 if (TraceCallFixup) { | |
| 1464 ResourceMark rm(thread); | |
| 1465 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1466 callee_method->print_short_name(tty); | |
| 1467 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1468 } | |
| 1469 should_be_mono = true; | |
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1470 } else if (inline_cache->is_icholder_call()) { |
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1471 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1472 if ( ic_oop != NULL) { |
| 0 | 1473 |
| 1474 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1475 // This isn't a real miss. We must have seen that compiled code | |
| 1476 // is now available and we want the call site converted to a | |
| 1477 // monomorphic compiled call site. | |
| 1478 // We can't assert for callee_method->code() != NULL because it | |
| 1479 // could have been deoptimized in the meantime | |
| 1480 if (TraceCallFixup) { | |
| 1481 ResourceMark rm(thread); | |
| 1482 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1483 callee_method->print_short_name(tty); | |
| 1484 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1485 } | |
| 1486 should_be_mono = true; | |
| 1487 } | |
| 1488 } | |
| 1489 } | |
| 1490 | |
| 1491 if (should_be_mono) { | |
| 1492 | |
| 1493 // We have a path that was monomorphic but was going interpreted | |
| 1494 // and now we have (or had) a compiled entry. We correct the IC | |
| 1495 // by using a new icBuffer. | |
| 1496 CompiledICInfo info; | |
| 1497 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1498 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1499 receiver_klass, | |
| 1500 inline_cache->is_optimized(), | |
| 1501 false, | |
| 1502 info, CHECK_(methodHandle())); | |
| 1503 inline_cache->set_to_monomorphic(info); | |
| 1504 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 1505 // Change to megamorphic | |
| 1506 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1507 } else { | |
| 1508 // Either clean or megamorphic | |
| 1509 } | |
| 1510 } | |
| 1511 } // Release CompiledIC_lock | |
| 1512 | |
| 1513 return callee_method; | |
| 1514 } | |
| 1515 | |
| 1516 // | |
| 1517 // Resets a call-site in compiled code so it will get resolved again. | |
| 1518 // This routines handles both virtual call sites, optimized virtual call | |
| 1519 // sites, and static call sites. Typically used to change a call sites | |
| 1520 // destination from compiled to interpreted. | |
| 1521 // | |
| 1522 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1523 ResourceMark rm(thread); | |
| 1524 RegisterMap reg_map(thread, false); | |
| 1525 frame stub_frame = thread->last_frame(); | |
| 1526 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1527 frame caller = stub_frame.sender(®_map); | |
| 1528 | |
| 1529 // Do nothing if the frame isn't a live compiled frame. | |
| 1530 // nmethod could be deoptimized by the time we get here | |
| 1531 // so no update to the caller is needed. | |
| 1532 | |
| 1533 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1534 | |
| 1535 address pc = caller.pc(); | |
| 1536 | |
| 1537 // Default call_addr is the location of the "basic" call. | |
| 1538 // Determine the address of the call we a reresolving. With | |
| 1539 // Inline Caches we will always find a recognizable call. | |
| 1540 // With Inline Caches disabled we may or may not find a | |
| 1541 // recognizable call. We will always find a call for static | |
| 1542 // calls and for optimized virtual calls. For vanilla virtual | |
| 1543 // calls it depends on the state of the UseInlineCaches switch. | |
| 1544 // | |
| 1545 // With Inline Caches disabled we can get here for a virtual call | |
| 1546 // for two reasons: | |
| 1547 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1548 // will run us thru handle_wrong_method and we will eventually | |
| 1549 // end up in the interpreter to throw the ame. | |
| 1550 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1551 // call and between the time we fetch the entry address and | |
| 1552 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1553 // we will wind up in the interprter (thru a c2i with c2). | |
| 1554 // | |
| 1555 address call_addr = NULL; | |
| 1556 { | |
| 1557 // Get call instruction under lock because another thread may be | |
| 1558 // busy patching it. | |
| 1559 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1560 // Location of call instruction | |
| 1561 if (NativeCall::is_call_before(pc)) { | |
| 1562 NativeCall *ncall = nativeCall_before(pc); | |
| 1563 call_addr = ncall->instruction_address(); | |
| 1564 } | |
| 1565 } | |
| 1566 | |
| 1567 // Check for static or virtual call | |
| 1568 bool is_static_call = false; | |
| 1569 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1570 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1571 // this is done with it. | |
| 1572 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1573 nmethodLocker nmlock(caller_nm); | |
| 1574 | |
| 1575 if (call_addr != NULL) { | |
| 1576 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1577 int ret = iter.next(); // Get item | |
| 1578 if (ret) { | |
| 1579 assert(iter.addr() == call_addr, "must find call"); | |
| 1580 if (iter.type() == relocInfo::static_call_type) { | |
| 1581 is_static_call = true; | |
| 1582 } else { | |
| 1583 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1584 iter.type() == relocInfo::opt_virtual_call_type | |
| 1585 , "unexpected relocInfo. type"); | |
| 1586 } | |
| 1587 } else { | |
| 1588 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1589 } | |
| 1590 | |
| 1591 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1592 // than directly setting it to the new destination, since resolving of calls | |
| 1593 // is always done through the same code path. (experience shows that it | |
| 1594 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1595 // to a wrong method). It should not be performance critical, since the | |
| 1596 // resolve is only done once. | |
| 1597 | |
| 1598 MutexLocker ml(CompiledIC_lock); | |
| 1599 // | |
| 1600 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1601 // as it is a waste of time | |
| 1602 // | |
| 1603 if (caller_nm->is_in_use()) { | |
| 1604 if (is_static_call) { | |
| 1605 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1606 ssc->set_to_clean(); | |
| 1607 } else { | |
| 1608 // compiled, dispatched call (which used to call an interpreted method) | |
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1609 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
| 0 | 1610 inline_cache->set_to_clean(); |
| 1611 } | |
| 1612 } | |
| 1613 } | |
| 1614 | |
| 1615 } | |
| 1616 | |
| 1617 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1618 | |
| 1619 | |
| 1620 #ifndef PRODUCT | |
| 1621 Atomic::inc(&_wrong_method_ctr); | |
| 1622 | |
| 1623 if (TraceCallFixup) { | |
| 1624 ResourceMark rm(thread); | |
| 1625 tty->print("handle_wrong_method reresolving call to"); | |
| 1626 callee_method->print_short_name(tty); | |
| 1627 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1628 } | |
| 1629 #endif | |
| 1630 | |
| 1631 return callee_method; | |
| 1632 } | |
| 1633 | |
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1634 #ifdef ASSERT |
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1635 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1636 const BasicType* sig_bt, |
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1637 const VMRegPair* regs) { |
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1638 ResourceMark rm; |
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1639 const int total_args_passed = method->size_of_parameters(); |
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1640 const VMRegPair* regs_with_member_name = regs; |
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1641 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1642 |
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1643 const int member_arg_pos = total_args_passed - 1; |
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1644 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1645 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1646 |
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1647 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1648 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1649 |
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1650 for (int i = 0; i < member_arg_pos; i++) { |
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1651 VMReg a = regs_with_member_name[i].first(); |
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1652 VMReg b = regs_without_member_name[i].first(); |
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1653 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1654 } |
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1655 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1656 } |
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1657 #endif |
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1658 |
| 0 | 1659 // --------------------------------------------------------------------------- |
| 1660 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1661 // we were called by a compiled method. However we could have lost a race | |
| 1662 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1663 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1664 // so he no longer calls into the interpreter. |
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1665 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1666 Method* moop(method); |
| 0 | 1667 |
| 1668 address entry_point = moop->from_compiled_entry(); | |
| 1669 | |
| 1670 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1671 // been resolved yet, in which case this function will be called from | |
| 1672 // an nmethod that has been patched for deopt and we can ignore the | |
| 1673 // request for a fixup. | |
| 1674 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1675 // is now back to the i2c in that case we don't need to patch and if | |
| 1676 // we did we'd leap into space because the callsite needs to use | |
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1677 // "to interpreter" stub in order to load up the Method*. Don't |
| 0 | 1678 // ask me how I know this... |
| 1679 | |
| 1680 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1681 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1682 return; | |
| 1683 } | |
| 1684 | |
| 1685 // The check above makes sure this is a nmethod. | |
| 1686 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1687 assert(nm, "must be"); | |
| 1688 | |
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1689 // Get the return PC for the passed caller PC. |
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1690 address return_pc = caller_pc + frame::pc_return_offset; |
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1691 |
| 0 | 1692 // There is a benign race here. We could be attempting to patch to a compiled |
| 1693 // entry point at the same time the callee is being deoptimized. If that is | |
| 1694 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1695 // call site with the same old data. clear_code will set code() to NULL | |
| 1696 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1697 // to patch. If we hit the window where the callee has a c2i in the | |
| 1698 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1699 // and patch the code with the same old data. Asi es la vida. | |
| 1700 | |
| 1701 if (moop->code() == NULL) return; | |
| 1702 | |
| 1205 | 1703 if (nm->is_in_use()) { |
| 0 | 1704 |
| 1705 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1706 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1707 if (NativeCall::is_call_before(return_pc)) { |
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1708 NativeCall *call = nativeCall_before(return_pc); |
| 0 | 1709 // |
| 1710 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1711 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1712 // see compiled code and attempt to patch the site by calling us. This would | |
| 1713 // then incorrectly convert the call site to optimized and its downhill from | |
| 1714 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1715 // just made a call site that could be megamorphic into a monomorphic site | |
| 1716 // for the rest of its life! Just another racing bug in the life of | |
| 1717 // fixup_callers_callsite ... | |
| 1718 // | |
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1719 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1720 iter.next(); |
| 1721 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1722 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1723 if ( typ != relocInfo::static_call_type && | |
| 1724 typ != relocInfo::opt_virtual_call_type && | |
| 1725 typ != relocInfo::static_stub_type) { | |
| 1726 return; | |
| 1727 } | |
| 1728 address destination = call->destination(); | |
| 1729 if (destination != entry_point) { | |
| 1730 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1731 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1732 if (callee == cb || callee->is_adapter_blob()) { | |
| 1733 // static call or optimized virtual | |
| 1734 if (TraceCallFixup) { | |
| 1204 | 1735 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1736 moop->print_short_name(tty); |
| 1737 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1738 } | |
| 1739 call->set_destination_mt_safe(entry_point); | |
| 1740 } else { | |
| 1741 if (TraceCallFixup) { | |
| 1742 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1743 moop->print_short_name(tty); | |
| 1744 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1745 } | |
| 1746 // assert is too strong could also be resolve destinations. | |
| 1747 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1748 } | |
| 1749 } else { | |
| 1750 if (TraceCallFixup) { | |
| 1204 | 1751 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1752 moop->print_short_name(tty); |
| 1753 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1754 } | |
| 1755 } | |
| 1756 } | |
| 1757 } | |
| 1758 IRT_END | |
| 1759 | |
| 1760 | |
| 1761 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1762 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1763 oopDesc* dest, jint dest_pos, | |
| 1764 jint length, | |
| 1765 JavaThread* thread)) { | |
| 1766 #ifndef PRODUCT | |
| 1767 _slow_array_copy_ctr++; | |
| 1768 #endif | |
| 1769 // Check if we have null pointers | |
| 1770 if (src == NULL || dest == NULL) { | |
| 1771 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1772 } | |
| 1773 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1774 // even though the copy_array API also performs dynamic checks to ensure | |
| 1775 // that src and dest are truly arrays (and are conformable). | |
| 1776 // The copy_array mechanism is awkward and could be removed, but | |
| 1777 // the compilers don't call this function except as a last resort, | |
| 1778 // so it probably doesn't matter. | |
| 6983 | 1779 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
| 0 | 1780 (arrayOopDesc*)dest, dest_pos, |
| 1781 length, thread); | |
| 1782 } | |
| 1783 JRT_END | |
| 1784 | |
| 1785 char* SharedRuntime::generate_class_cast_message( | |
| 1786 JavaThread* thread, const char* objName) { | |
| 1787 | |
| 1788 // Get target class name from the checkcast instruction | |
| 1789 vframeStream vfst(thread, true); | |
| 1790 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1791 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 6983 | 1792 Klass* targetKlass = vfst.method()->constants()->klass_at( |
| 1793 cc.index(), thread); | |
| 0 | 1794 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1795 } | |
| 1796 | |
| 1797 char* SharedRuntime::generate_class_cast_message( | |
| 710 | 1798 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1799 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1800 | |
| 53 | 1801 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1802 if (NULL == message) { |
| 53 | 1803 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1804 message = const_cast<char*>(objName); |
| 1805 } else { | |
| 1806 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1807 } | |
| 1808 return message; | |
| 1809 } | |
| 1810 | |
| 1811 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1812 (void) JavaThread::current()->reguard_stack(); | |
| 1813 JRT_END | |
| 1814 | |
| 1815 | |
| 1816 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1817 #ifndef PRODUCT | |
| 1818 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1819 #endif | |
| 1820 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1821 oop obj(_obj); | |
| 1822 #ifndef PRODUCT | |
| 1823 _monitor_enter_ctr++; // monitor enter slow | |
| 1824 #endif | |
| 1825 if (PrintBiasedLockingStatistics) { | |
| 1826 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1827 } | |
| 1828 Handle h_obj(THREAD, obj); | |
| 1829 if (UseBiasedLocking) { | |
| 1830 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1831 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1832 } else { | |
| 1833 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1834 } | |
| 1835 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1836 JRT_END | |
| 1837 | |
| 1838 #ifndef PRODUCT | |
| 1839 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1840 #endif | |
| 1841 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1842 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1843 oop obj(_obj); | |
| 1844 #ifndef PRODUCT | |
| 1845 _monitor_exit_ctr++; // monitor exit slow | |
| 1846 #endif | |
| 1847 Thread* THREAD = JavaThread::current(); | |
| 1848 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1849 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1850 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1851 #undef MIGHT_HAVE_PENDING | |
| 1852 #ifdef MIGHT_HAVE_PENDING | |
| 1853 // Save and restore any pending_exception around the exception mark. | |
| 1854 // While the slow_exit must not throw an exception, we could come into | |
| 1855 // this routine with one set. | |
| 1856 oop pending_excep = NULL; | |
| 1857 const char* pending_file; | |
| 1858 int pending_line; | |
| 1859 if (HAS_PENDING_EXCEPTION) { | |
| 1860 pending_excep = PENDING_EXCEPTION; | |
| 1861 pending_file = THREAD->exception_file(); | |
| 1862 pending_line = THREAD->exception_line(); | |
| 1863 CLEAR_PENDING_EXCEPTION; | |
| 1864 } | |
| 1865 #endif /* MIGHT_HAVE_PENDING */ | |
| 1866 | |
| 1867 { | |
| 1868 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1869 EXCEPTION_MARK; | |
| 1870 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1871 } | |
| 1872 | |
| 1873 #ifdef MIGHT_HAVE_PENDING | |
| 1874 if (pending_excep != NULL) { | |
| 1875 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1876 } | |
| 1877 #endif /* MIGHT_HAVE_PENDING */ | |
| 1878 JRT_END | |
| 1879 | |
| 1880 #ifndef PRODUCT | |
| 1881 | |
| 1882 void SharedRuntime::print_statistics() { | |
| 1883 ttyLocker ttyl; | |
| 1884 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1885 | |
| 1886 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1887 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1888 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1889 | |
| 1890 SharedRuntime::print_ic_miss_histogram(); | |
| 1891 | |
| 1892 if (CountRemovableExceptions) { | |
| 1893 if (_nof_removable_exceptions > 0) { | |
| 1894 Unimplemented(); // this counter is not yet incremented | |
| 1895 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1896 } | |
| 1897 } | |
| 1898 | |
| 1899 // Dump the JRT_ENTRY counters | |
| 1900 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 1901 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 1902 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 1903 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 1904 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 1905 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 1906 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 1907 | |
| 1908 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 1909 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 1910 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 1911 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 1912 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 1913 | |
| 1914 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 1915 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 1916 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 1917 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 1918 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 1919 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 1920 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 1921 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 1922 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 1923 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 1924 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 1925 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 1926 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 1927 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 1928 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 1929 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 1930 | |
|
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1931 AdapterHandlerLibrary::print_statistics(); |
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1932 |
| 0 | 1933 if (xtty != NULL) xtty->tail("statistics"); |
| 1934 } | |
| 1935 | |
| 1936 inline double percent(int x, int y) { | |
| 1937 return 100.0 * x / MAX2(y, 1); | |
| 1938 } | |
| 1939 | |
| 1940 class MethodArityHistogram { | |
| 1941 public: | |
| 1942 enum { MAX_ARITY = 256 }; | |
| 1943 private: | |
| 1944 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 1945 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 1946 static int _max_arity; // max. arity seen | |
| 1947 static int _max_size; // max. arg size seen | |
| 1948 | |
| 1949 static void add_method_to_histogram(nmethod* nm) { | |
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1950 Method* m = nm->method(); |
| 0 | 1951 ArgumentCount args(m->signature()); |
| 1952 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 1953 int argsize = m->size_of_parameters(); | |
| 1954 arity = MIN2(arity, MAX_ARITY-1); | |
| 1955 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 1956 int count = nm->method()->compiled_invocation_count(); | |
| 1957 _arity_histogram[arity] += count; | |
| 1958 _size_histogram[argsize] += count; | |
| 1959 _max_arity = MAX2(_max_arity, arity); | |
| 1960 _max_size = MAX2(_max_size, argsize); | |
| 1961 } | |
| 1962 | |
| 1963 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 1964 const int N = MIN2(5, n); | |
| 1965 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 1966 double sum = 0; | |
| 1967 double weighted_sum = 0; | |
| 1968 int i; | |
| 1969 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 1970 double rest = sum; | |
| 1971 double percent = sum / 100; | |
| 1972 for (i = 0; i <= N; i++) { | |
| 1973 rest -= histo[i]; | |
| 1974 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 1975 } | |
| 1976 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 1977 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 1978 } | |
| 1979 | |
| 1980 void print_histogram() { | |
| 1981 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 1982 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 1983 tty->print_cr("\nSame for parameter size (in words):"); | |
| 1984 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 1985 tty->cr(); | |
| 1986 } | |
| 1987 | |
| 1988 public: | |
| 1989 MethodArityHistogram() { | |
| 1990 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 1991 _max_arity = _max_size = 0; | |
| 1992 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 1993 CodeCache::nmethods_do(add_method_to_histogram); | |
| 1994 print_histogram(); | |
| 1995 } | |
| 1996 }; | |
| 1997 | |
| 1998 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 1999 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2000 int MethodArityHistogram::_max_arity; | |
| 2001 int MethodArityHistogram::_max_size; | |
| 2002 | |
| 2003 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2004 tty->print_cr("Calls from compiled code:"); | |
| 2005 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2006 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2007 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2008 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2009 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2010 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2011 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2012 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2013 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2014 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2015 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2016 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2017 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2018 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2019 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2020 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2021 tty->cr(); | |
| 2022 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2023 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2024 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2025 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2026 tty->cr(); | |
| 2027 | |
| 2028 MethodArityHistogram h; | |
| 2029 } | |
| 2030 #endif | |
| 2031 | |
| 2032 | |
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2033 // A simple wrapper class around the calling convention information |
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2034 // that allows sharing of adapters for the same calling convention. |
| 6197 | 2035 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2036 private: |
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2037 enum { |
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2038 _basic_type_bits = 4, |
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2039 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2040 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2041 _compact_int_count = 3 |
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2042 }; |
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2043 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2044 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2045 |
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2046 union { |
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2047 int _compact[_compact_int_count]; |
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2048 int* _fingerprint; |
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2049 } _value; |
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2050 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2051 // Otherwise _value._fingerprint is the array. |
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2052 |
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2053 // Remap BasicTypes that are handled equivalently by the adapters. |
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2054 // These are correct for the current system but someday it might be |
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2055 // necessary to make this mapping platform dependent. |
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2056 static int adapter_encoding(BasicType in) { |
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2057 switch(in) { |
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2058 case T_BOOLEAN: |
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2059 case T_BYTE: |
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2060 case T_SHORT: |
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2061 case T_CHAR: |
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2062 // There are all promoted to T_INT in the calling convention |
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2063 return T_INT; |
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2064 |
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2065 case T_OBJECT: |
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2066 case T_ARRAY: |
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2067 // In other words, we assume that any register good enough for |
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2068 // an int or long is good enough for a managed pointer. |
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2069 #ifdef _LP64 |
| 1506 | 2070 return T_LONG; |
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2071 #else |
| 1506 | 2072 return T_INT; |
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2073 #endif |
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2074 |
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2075 case T_INT: |
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2076 case T_LONG: |
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2077 case T_FLOAT: |
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2078 case T_DOUBLE: |
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2079 case T_VOID: |
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2080 return in; |
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2081 |
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2082 default: |
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2083 ShouldNotReachHere(); |
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2084 return T_CONFLICT; |
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2085 } |
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2086 } |
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2087 |
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2088 public: |
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2089 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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2090 // The fingerprint is based on the BasicType signature encoded |
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2091 // into an array of ints with eight entries per int. |
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2092 int* ptr; |
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2093 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2094 if (len <= _compact_int_count) { |
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2095 assert(_compact_int_count == 3, "else change next line"); |
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2096 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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2097 // Storing the signature encoded as signed chars hits about 98% |
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2098 // of the time. |
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2099 _length = -len; |
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2100 ptr = _value._compact; |
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2101 } else { |
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2102 _length = len; |
| 6197 | 2103 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
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2104 ptr = _value._fingerprint; |
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2105 } |
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2106 |
|
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2107 // Now pack the BasicTypes with 8 per int |
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2108 int sig_index = 0; |
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2109 for (int index = 0; index < len; index++) { |
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2110 int value = 0; |
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2111 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
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2112 int bt = ((sig_index < total_args_passed) |
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2113 ? adapter_encoding(sig_bt[sig_index++]) |
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2114 : 0); |
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2115 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
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2116 value = (value << _basic_type_bits) | bt; |
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2117 } |
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2118 ptr[index] = value; |
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2119 } |
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2120 } |
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2121 |
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2122 ~AdapterFingerPrint() { |
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2123 if (_length > 0) { |
| 6197 | 2124 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
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2125 } |
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2126 } |
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2127 |
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|
2128 int value(int index) { |
|
1187
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diff
changeset
|
2129 if (_length < 0) { |
|
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diff
changeset
|
2130 return _value._compact[index]; |
|
cf0685d550f1
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never
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diff
changeset
|
2131 } |
|
cf0685d550f1
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diff
changeset
|
2132 return _value._fingerprint[index]; |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2133 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2134 int length() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2135 if (_length < 0) return -_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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|
2136 return _length; |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2137 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2138 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2139 bool is_compact() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2140 return _length <= 0; |
|
cf0685d550f1
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never
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diff
changeset
|
2141 } |
|
cf0685d550f1
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diff
changeset
|
2142 |
|
cf0685d550f1
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diff
changeset
|
2143 unsigned int compute_hash() { |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2144 int hash = 0; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2145 for (int i = 0; i < length(); i++) { |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2146 int v = value(i); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2147 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
cf0685d550f1
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|
2148 } |
|
cf0685d550f1
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diff
changeset
|
2149 return (unsigned int)hash; |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2150 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2151 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2152 const char* as_string() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2153 stringStream st; |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3781
diff
changeset
|
2154 st.print("0x"); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2155 for (int i = 0; i < length(); i++) { |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3781
diff
changeset
|
2156 st.print("%08x", value(i)); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2157 } |
|
cf0685d550f1
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never
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diff
changeset
|
2158 return st.as_string(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2159 } |
|
cf0685d550f1
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never
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diff
changeset
|
2160 |
|
cf0685d550f1
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diff
changeset
|
2161 bool equals(AdapterFingerPrint* other) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2162 if (other->_length != _length) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2163 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2164 } |
|
cf0685d550f1
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diff
changeset
|
2165 if (_length < 0) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2166 assert(_compact_int_count == 3, "else change next line"); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2167 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2168 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2169 _value._compact[2] == other->_value._compact[2]; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2170 } else { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2171 for (int i = 0; i < _length; i++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2172 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2173 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2174 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2175 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2176 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2177 return true; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2178 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2179 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2180 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2181 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2182 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
| 6197 | 2183 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2184 friend class AdapterHandlerTableIterator; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2185 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2186 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2187 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2188 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2189 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
changeset
|
2190 static int _buckets; // number of buckets checked |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2191 static int _equals; // number of buckets checked with matching hash |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2192 static int _hits; // number of successful lookups |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2193 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
|
2194 #endif |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2195 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2196 AdapterHandlerEntry* bucket(int i) { |
| 6197 | 2197 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
|
1187
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
never
parents:
1142
diff
changeset
|
2199 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2200 public: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2201 AdapterHandlerTable() |
| 6197 | 2202 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2203 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2204 // 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:
1142
diff
changeset
|
2205 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
| 6197 | 2206 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2207 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:
1142
diff
changeset
|
2208 return entry; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2209 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2210 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2211 // Insert an entry into the table |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2212 void add(AdapterHandlerEntry* entry) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2213 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
|
2214 add_entry(index, entry); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2215 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2216 |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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1205
diff
changeset
|
2217 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2218 entry->deallocate(); |
| 6197 | 2219 BasicHashtable<mtCode>::free_entry(entry); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2220 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2221 |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2222 // Find a entry with the same fingerprint if it exists |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2223 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2224 NOT_PRODUCT(_lookups++); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2225 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2226 unsigned int hash = fp.compute_hash(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2227 int index = hash_to_index(hash); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2228 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2229 NOT_PRODUCT(_buckets++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2230 if (e->hash() == hash) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2231 NOT_PRODUCT(_equals++); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2232 if (fp.equals(e->fingerprint())) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2233 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2234 if (fp.is_compact()) _compact++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2235 _hits++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2236 #endif |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2237 return e; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2238 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2239 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2240 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2241 return NULL; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2242 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2243 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2244 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2245 void print_statistics() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2246 ResourceMark rm; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2247 int longest = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2248 int empty = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2249 int total = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2250 int nonempty = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2251 for (int index = 0; index < table_size(); index++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2252 int count = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2253 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2254 count++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2255 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2256 if (count != 0) nonempty++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2257 if (count == 0) empty++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2258 if (count > longest) longest = count; |
|
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|
2259 total += count; |
|
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|
2260 } |
|
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|
2261 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2262 empty, longest, total, total / (double)nonempty); |
|
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|
2263 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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|
2264 _lookups, _buckets, _equals, _hits, _compact); |
|
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|
2265 } |
|
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|
2266 #endif |
|
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|
2267 }; |
|
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|
2268 |
|
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|
2269 |
|
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|
2270 #ifndef PRODUCT |
|
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|
2271 |
|
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|
2272 int AdapterHandlerTable::_lookups; |
|
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|
2273 int AdapterHandlerTable::_buckets; |
|
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|
2274 int AdapterHandlerTable::_equals; |
|
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|
2275 int AdapterHandlerTable::_hits; |
|
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|
2276 int AdapterHandlerTable::_compact; |
|
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|
2277 |
|
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|
2278 #endif |
|
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|
2279 |
|
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|
2280 class AdapterHandlerTableIterator : public StackObj { |
|
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|
2281 private: |
|
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|
2282 AdapterHandlerTable* _table; |
|
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|
2283 int _index; |
|
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|
2284 AdapterHandlerEntry* _current; |
|
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|
2285 |
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|
2286 void scan() { |
|
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|
2287 while (_index < _table->table_size()) { |
|
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|
2288 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2289 _index++; |
|
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|
2290 if (a != NULL) { |
|
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|
2291 _current = a; |
|
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|
2292 return; |
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|
2293 } |
|
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|
2294 } |
|
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|
2295 } |
|
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|
2296 |
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|
2297 public: |
|
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2298 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
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|
2299 scan(); |
|
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|
2300 } |
|
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|
2301 bool has_next() { |
|
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|
2302 return _current != NULL; |
|
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|
2303 } |
|
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|
2304 AdapterHandlerEntry* next() { |
|
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|
2305 if (_current != NULL) { |
|
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|
2306 AdapterHandlerEntry* result = _current; |
|
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|
2307 _current = _current->next(); |
|
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|
2308 if (_current == NULL) scan(); |
|
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|
2309 return result; |
|
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|
2310 } else { |
|
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|
2311 return NULL; |
|
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|
2312 } |
|
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|
2313 } |
|
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|
2314 }; |
|
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|
2315 |
|
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|
2316 |
| 0 | 2317 // --------------------------------------------------------------------------- |
| 2318 // Implementation of AdapterHandlerLibrary | |
|
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|
2319 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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2320 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2321 const int AdapterHandlerLibrary_size = 16*K; |
|
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2322 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
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|
2323 |
|
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|
2324 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
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|
2325 // Should be called only when AdapterHandlerLibrary_lock is active. |
|
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|
2326 if (_buffer == NULL) // Initialize lazily |
|
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|
2327 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
|
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|
2328 return _buffer; |
|
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|
2329 } |
| 0 | 2330 |
| 2331 void AdapterHandlerLibrary::initialize() { | |
|
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|
2332 if (_adapters != NULL) return; |
|
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|
2333 _adapters = new AdapterHandlerTable(); |
| 0 | 2334 |
| 2335 // Create a special handler for abstract methods. Abstract methods | |
| 2336 // are never compiled so an i2c entry is somewhat meaningless, but | |
| 2337 // fill it in with something appropriate just in case. Pass handle | |
| 2338 // wrong method for the c2i transitions. | |
| 2339 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
|
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|
2340 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
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|
2341 StubRoutines::throw_AbstractMethodError_entry(), |
|
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|
2342 wrong_method, wrong_method); |
| 0 | 2343 } |
| 2344 | |
|
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|
2345 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
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|
2346 address i2c_entry, |
|
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|
2347 address c2i_entry, |
|
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|
2348 address c2i_unverified_entry) { |
|
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|
2349 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2350 } |
|
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|
2351 |
|
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|
2352 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
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|
2353 // Use customized signature handler. Need to lock around updates to |
|
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|
2354 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
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|
2355 // and a single writer: this could be fixed if it becomes a |
|
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|
2356 // problem). |
| 0 | 2357 |
| 2358 // Get the address of the ic_miss handlers before we grab the | |
| 2359 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2360 // was caused by the initialization of the stubs happening | |
| 2361 // while we held the lock and then notifying jvmti while | |
| 2362 // holding it. This just forces the initialization to be a little | |
| 2363 // earlier. | |
| 2364 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2365 assert(ic_miss != NULL, "must have handler"); | |
| 2366 | |
|
1187
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|
2367 ResourceMark rm; |
|
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|
2368 |
| 1748 | 2369 NOT_PRODUCT(int insts_size); |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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1295
diff
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|
2370 AdapterBlob* B = NULL; |
|
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|
2371 AdapterHandlerEntry* entry = NULL; |
|
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|
2372 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2373 { |
| 2374 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2375 // make sure data structure is initialized | |
| 2376 initialize(); | |
| 2377 | |
| 2378 if (method->is_abstract()) { | |
|
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|
2379 return _abstract_method_handler; |
| 0 | 2380 } |
| 2381 | |
|
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|
2382 // Fill in the signature array, for the calling-convention call. |
|
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|
2383 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
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|
2384 |
|
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|
2385 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
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|
2386 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
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|
2387 int i = 0; |
|
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|
2388 if (!method->is_static()) // Pass in receiver first |
|
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|
2389 sig_bt[i++] = T_OBJECT; |
|
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|
2390 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
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|
2391 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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|
2392 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
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|
2393 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2394 } |
|
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|
2395 assert(i == total_args_passed, ""); |
|
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|
2396 |
|
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|
2397 // Lookup method signature's fingerprint |
|
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|
2398 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
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|
2399 |
|
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|
2400 #ifdef ASSERT |
|
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|
2401 AdapterHandlerEntry* shared_entry = NULL; |
|
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|
2402 if (VerifyAdapterSharing && entry != NULL) { |
|
74c848d437ab
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|
2403 shared_entry = entry; |
|
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|
2404 entry = NULL; |
|
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|
2405 } |
|
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|
2406 #endif |
|
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|
2407 |
|
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|
2408 if (entry != NULL) { |
|
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|
2409 return entry; |
| 0 | 2410 } |
| 2411 | |
|
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|
2412 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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|
2413 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
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|
2414 |
|
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|
2415 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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|
2416 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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|
2417 |
| 0 | 2418 // Create I2C & C2I handlers |
| 2419 | |
|
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|
2420 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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|
2421 if (buf != NULL) { |
| 1748 | 2422 CodeBuffer buffer(buf); |
|
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|
2423 short buffer_locs[20]; |
|
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|
2424 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
|
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|
2425 sizeof(buffer_locs)/sizeof(relocInfo)); |
|
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|
2426 MacroAssembler _masm(&buffer); |
|
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|
2427 |
|
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|
2428 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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|
2429 total_args_passed, |
|
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|
2430 comp_args_on_stack, |
|
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|
2431 sig_bt, |
|
1187
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|
2432 regs, |
|
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|
2433 fingerprint); |
| 0 | 2434 |
|
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|
2435 #ifdef ASSERT |
|
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|
2436 if (VerifyAdapterSharing) { |
|
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|
2437 if (shared_entry != NULL) { |
| 1748 | 2438 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
|
1207
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|
2439 "code must match"); |
|
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|
2440 // Release the one just created and return the original |
|
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|
2441 _adapters->free_entry(entry); |
|
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|
2442 return shared_entry; |
|
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|
2443 } else { |
| 1748 | 2444 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
|
1207
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|
2445 } |
|
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|
2446 } |
|
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|
2447 #endif |
|
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|
2448 |
|
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9eba43136cb5
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|
2449 B = AdapterBlob::create(&buffer); |
| 1748 | 2450 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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|
2451 } |
| 28 | 2452 if (B == NULL) { |
| 2453 // CodeCache is full, disable compilation | |
| 2454 // Ought to log this but compile log is only per compile thread | |
| 2455 // and we're some non descript Java thread. | |
| 1202 | 2456 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2457 CompileBroker::handle_full_code_cache(); | |
|
1187
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|
2458 return NULL; // Out of CodeCache space |
| 28 | 2459 } |
| 1748 | 2460 entry->relocate(B->content_begin()); |
| 0 | 2461 #ifndef PRODUCT |
| 2462 // debugging suppport | |
|
6266
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|
2463 if (PrintAdapterHandlers || PrintStubCode) { |
|
6796
b31471cdc53e
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diff
changeset
|
2464 ttyLocker ttyl; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2465 entry->print_adapter_on(tty); |
|
1d7922586cf6
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|
2466 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
|
1187
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|
2467 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
|
6266
1d7922586cf6
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|
2468 method->signature()->as_C_string(), insts_size); |
| 0 | 2469 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
|
6266
1d7922586cf6
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changeset
|
2470 if (Verbose || PrintStubCode) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2471 address first_pc = entry->base_address(); |
|
6796
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diff
changeset
|
2472 if (first_pc != NULL) { |
|
6266
1d7922586cf6
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changeset
|
2473 Disassembler::decode(first_pc, first_pc + insts_size); |
|
6796
b31471cdc53e
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changeset
|
2474 tty->cr(); |
|
b31471cdc53e
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diff
changeset
|
2475 } |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2476 } |
| 0 | 2477 } |
| 2478 #endif | |
| 2479 | |
|
1187
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|
2480 _adapters->add(entry); |
| 0 | 2481 } |
| 2482 // Outside of the lock | |
| 2483 if (B != NULL) { | |
| 2484 char blob_id[256]; | |
| 2485 jio_snprintf(blob_id, | |
| 2486 sizeof(blob_id), | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
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|
2487 "%s(%s)@" PTR_FORMAT, |
|
1299
9eba43136cb5
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diff
changeset
|
2488 B->name(), |
|
1187
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1142
diff
changeset
|
2489 fingerprint->as_string(), |
| 1748 | 2490 B->content_begin()); |
| 2491 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
| 0 | 2492 |
| 2493 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 1748 | 2494 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
| 0 | 2495 } |
| 2496 } | |
|
1187
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1142
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changeset
|
2497 return entry; |
| 0 | 2498 } |
| 2499 | |
|
6266
1d7922586cf6
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diff
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|
2500 address AdapterHandlerEntry::base_address() { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2501 address base = _i2c_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2502 if (base == NULL) base = _c2i_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2503 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2504 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2505 return base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2506 } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2507 |
| 0 | 2508 void AdapterHandlerEntry::relocate(address new_base) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2509 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
|
2510 assert(old_base != NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2511 ptrdiff_t delta = new_base - old_base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2512 if (_i2c_entry != NULL) |
| 0 | 2513 _i2c_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2514 if (_c2i_entry != NULL) |
| 0 | 2515 _c2i_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2516 if (_c2i_unverified_entry != NULL) |
| 0 | 2517 _c2i_unverified_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2518 assert(base_address() == new_base, ""); |
| 0 | 2519 } |
| 2520 | |
|
1207
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diff
changeset
|
2521 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2522 void AdapterHandlerEntry::deallocate() { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2523 delete _fingerprint; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2524 #ifdef ASSERT |
| 6197 | 2525 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
| 2526 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig, mtCode); | |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2527 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2528 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2529 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2530 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2531 #ifdef ASSERT |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2532 // Capture the code before relocation so that it can be compared |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2533 // against other versions. If the code is captured after relocation |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2534 // then relative instructions won't be equivalent. |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2535 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
| 6197 | 2536 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2537 _code_length = length; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2538 memcpy(_saved_code, buffer, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2539 _total_args_passed = total_args_passed; |
| 6197 | 2540 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed, mtCode); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2541 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2542 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2543 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2544 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2545 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2546 if (length != _code_length) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2547 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2548 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2549 for (int i = 0; i < length; i++) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2550 if (buffer[i] != _saved_code[i]) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2551 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2552 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2553 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2554 return true; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2555 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2556 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2557 |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2558 |
| 0 | 2559 // Create a native wrapper for this native method. The wrapper converts the |
| 2560 // java compiled calling convention to the native convention, handlizes | |
| 2561 // arguments, and transitions to native. On return from the native we transition | |
| 2562 // back to java blocking if a safepoint is in progress. | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2563 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
| 0 | 2564 ResourceMark rm; |
| 2565 nmethod* nm = NULL; | |
| 2566 | |
|
6266
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2567 assert(method->is_native(), "must be native"); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2568 assert(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
|
2569 method->has_native_function(), "must have something valid to call!"); |
| 0 | 2570 |
| 2571 { | |
| 2572 // perform the work while holding the lock, but perform any printing outside the lock | |
| 2573 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2574 // See if somebody beat us to it | |
| 2575 nm = method->code(); | |
| 2576 if (nm) { | |
| 2577 return nm; | |
| 2578 } | |
| 2579 | |
|
742
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710
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changeset
|
2580 ResourceMark rm; |
| 0 | 2581 |
|
742
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diff
changeset
|
2582 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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changeset
|
2583 if (buf != NULL) { |
| 1748 | 2584 CodeBuffer buffer(buf); |
|
742
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changeset
|
2585 double locs_buf[20]; |
|
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diff
changeset
|
2586 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
45463a04ca27
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changeset
|
2587 MacroAssembler _masm(&buffer); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2588 |
|
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diff
changeset
|
2589 // Fill in the signature array, for the calling-convention call. |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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diff
changeset
|
2590 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
changeset
|
2591 |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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diff
changeset
|
2592 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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|
2593 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
742
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|
2594 int i=0; |
|
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|
2595 if( !method->is_static() ) // Pass in receiver first |
|
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|
2596 sig_bt[i++] = T_OBJECT; |
|
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diff
changeset
|
2597 SignatureStream ss(method->signature()); |
|
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|
2598 for( ; !ss.at_return_type(); ss.next()) { |
|
45463a04ca27
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|
2599 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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|
2600 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
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|
2601 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2602 } |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2603 assert(i == total_args_passed, ""); |
|
742
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|
2604 BasicType ret_type = ss.type(); |
|
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|
2605 |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2606 // Now get the compiled-Java layout as input (or output) arguments. |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2607 // NOTE: Stubs for compiled entry points of method handle intrinsics |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
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|
2608 // are just trampolines so the argument registers must be outgoing ones. |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2609 const bool is_outgoing = method->is_method_handle_intrinsic(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2610 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
|
742
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|
2611 |
|
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|
2612 // Generate the compiled-to-native wrapper code |
|
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|
2613 nm = SharedRuntime::generate_native_wrapper(&_masm, |
|
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|
2614 method, |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
diff
changeset
|
2615 compile_id, |
|
6790
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7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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changeset
|
2616 sig_bt, |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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changeset
|
2617 regs, |
|
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|
2618 ret_type); |
| 0 | 2619 } |
| 2620 } | |
| 2621 | |
| 2622 // Must unlock before calling set_code | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
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|
2623 |
| 0 | 2624 // Install the generated code. |
| 2625 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2626 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2627 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
diff
changeset
|
2628 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2629 } |
| 0 | 2630 method->set_code(method, nm); |
| 2631 nm->post_compiled_method_load_event(); | |
| 2632 } else { | |
| 2633 // CodeCache is full, disable compilation | |
| 1202 | 2634 CompileBroker::handle_full_code_cache(); |
| 0 | 2635 } |
| 2636 return nm; | |
| 2637 } | |
| 2638 | |
|
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
changeset
|
2639 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2640 assert(thread == JavaThread::current(), "must be"); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2641 // The code is about to enter a JNI lazy critical native method and |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2642 // _needs_gc is true, so if this thread is already in a critical |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2643 // 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
|
2644 // until needs_gc has been cleared. |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2645 if (thread->in_critical()) { |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2646 return; |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2647 } |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
changeset
|
2648 // 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
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diff
changeset
|
2649 GC_locker::lock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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4872
diff
changeset
|
2650 GC_locker::unlock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2651 JRT_END |
|
0382d2b469b2
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diff
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|
2652 |
|
116
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diff
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|
2653 #ifdef HAVE_DTRACE_H |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2654 // Create a dtrace nmethod for this method. The wrapper converts the |
|
018d5b58dd4f
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62
diff
changeset
|
2655 // 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
|
2656 // (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
|
2657 // 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
|
2658 // leaf no thread transition is needed. |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2659 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2660 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
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|
2661 ResourceMark rm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
changeset
|
2662 nmethod* nm = NULL; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2663 |
|
018d5b58dd4f
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62
diff
changeset
|
2664 if (PrintCompilation) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2665 ttyLocker ttyl; |
|
018d5b58dd4f
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diff
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|
2666 tty->print("--- n%s "); |
|
018d5b58dd4f
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diff
changeset
|
2667 method->print_short_name(tty); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2668 if (method->is_static()) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2669 tty->print(" (static)"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2670 } |
|
018d5b58dd4f
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diff
changeset
|
2671 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2672 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2673 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2674 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2675 // perform the work while holding the lock, but perform any printing |
|
018d5b58dd4f
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diff
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|
2676 // outside the lock |
|
018d5b58dd4f
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kamg
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62
diff
changeset
|
2677 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2678 // 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
|
2679 nm = method->code(); |
|
018d5b58dd4f
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diff
changeset
|
2680 if (nm) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2681 return nm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2682 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2683 |
|
742
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diff
changeset
|
2684 ResourceMark rm; |
|
45463a04ca27
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changeset
|
2685 |
|
45463a04ca27
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diff
changeset
|
2686 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
|
2687 if (buf != NULL) { |
| 1748 | 2688 CodeBuffer buffer(buf); |
|
742
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diff
changeset
|
2689 // Need a few relocation entries |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2690 double locs_buf[20]; |
|
45463a04ca27
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kvn
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changeset
|
2691 buffer.insts()->initialize_shared_locs( |
|
116
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changeset
|
2692 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
742
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|
2693 MacroAssembler _masm(&buffer); |
|
116
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|
2694 |
|
742
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changeset
|
2695 // Generate the compiled-to-native wrapper code |
|
45463a04ca27
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changeset
|
2696 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
|
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|
2697 } |
|
116
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|
2698 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2699 return nm; |
|
018d5b58dd4f
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kamg
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diff
changeset
|
2700 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2701 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2702 // the dtrace method needs to convert java lang string to utf8 string. |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2703 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
|
018d5b58dd4f
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kamg
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|
2704 typeArrayOop jlsValue = java_lang_String::value(src); |
|
018d5b58dd4f
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kamg
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62
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|
2705 int jlsOffset = java_lang_String::offset(src); |
|
018d5b58dd4f
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62
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|
2706 int jlsLen = java_lang_String::length(src); |
|
018d5b58dd4f
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|
2707 jchar* jlsPos = (jlsLen == 0) ? NULL : |
|
018d5b58dd4f
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kamg
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62
diff
changeset
|
2708 jlsValue->char_at_addr(jlsOffset); |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6796
diff
changeset
|
2709 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
116
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|
2710 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
|
018d5b58dd4f
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|
2711 } |
|
018d5b58dd4f
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changeset
|
2712 #endif // ndef HAVE_DTRACE_H |
|
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2713 |
| 0 | 2714 // ------------------------------------------------------------------------- |
| 2715 // Java-Java calling convention | |
| 2716 // (what you use when Java calls Java) | |
| 2717 | |
| 2718 //------------------------------name_for_receiver---------------------------------- | |
| 2719 // For a given signature, return the VMReg for parameter 0. | |
| 2720 VMReg SharedRuntime::name_for_receiver() { | |
| 2721 VMRegPair regs; | |
| 2722 BasicType sig_bt = T_OBJECT; | |
| 2723 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2724 // Return argument 0 register. In the LP64 build pointers | |
| 2725 // take 2 registers, but the VM wants only the 'main' name. | |
| 2726 return regs.first(); | |
| 2727 } | |
| 2728 | |
| 10390 | 2729 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
| 0 | 2730 // This method is returning a data structure allocating as a |
| 2731 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2732 char *s = sig->as_C_string(); | |
| 2733 int len = (int)strlen(s); | |
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2734 s++; len--; // Skip opening paren |
| 0 | 2735 char *t = s+len; |
| 2736 while( *(--t) != ')' ) ; // Find close paren | |
| 2737 | |
| 2738 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2739 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2740 int cnt = 0; | |
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2741 if (has_receiver) { |
| 0 | 2742 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2743 } | |
| 2744 | |
| 2745 while( s < t ) { | |
| 2746 switch( *s++ ) { // Switch on signature character | |
| 2747 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2748 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2749 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2750 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2751 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2752 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2753 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2754 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2755 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2756 case 'L': // Oop | |
| 2757 while( *s++ != ';' ) ; // Skip signature | |
| 2758 sig_bt[cnt++] = T_OBJECT; | |
| 2759 break; | |
| 2760 case '[': { // Array | |
| 2761 do { // Skip optional size | |
| 2762 while( *s >= '0' && *s <= '9' ) s++; | |
| 2763 } while( *s++ == '[' ); // Nested arrays? | |
| 2764 // Skip element type | |
| 2765 if( s[-1] == 'L' ) | |
| 2766 while( *s++ != ';' ) ; // Skip signature | |
| 2767 sig_bt[cnt++] = T_ARRAY; | |
| 2768 break; | |
| 2769 } | |
| 2770 default : ShouldNotReachHere(); | |
| 2771 } | |
| 2772 } | |
| 10390 | 2773 |
| 2774 if (has_appendix) { | |
| 2775 sig_bt[cnt++] = T_OBJECT; | |
| 2776 } | |
| 2777 | |
| 0 | 2778 assert( cnt < 256, "grow table size" ); |
| 2779 | |
| 2780 int comp_args_on_stack; | |
| 2781 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2782 | |
| 2783 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2784 // we must add that in to get "true" stack offsets. | |
| 2785 | |
| 2786 if (comp_args_on_stack) { | |
| 2787 for (int i = 0; i < cnt; i++) { | |
| 2788 VMReg reg1 = regs[i].first(); | |
| 2789 if( reg1->is_stack()) { | |
| 2790 // Yuck | |
| 2791 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2792 } | |
| 2793 VMReg reg2 = regs[i].second(); | |
| 2794 if( reg2->is_stack()) { | |
| 2795 // Yuck | |
| 2796 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2797 } | |
| 2798 regs[i].set_pair(reg2, reg1); | |
| 2799 } | |
| 2800 } | |
| 2801 | |
| 2802 // results | |
| 2803 *arg_size = cnt; | |
| 2804 return regs; | |
| 2805 } | |
| 2806 | |
| 2807 // OSR Migration Code | |
| 2808 // | |
| 2809 // This code is used convert interpreter frames into compiled frames. It is | |
| 2810 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2811 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2812 // active locks are inflated to allow them to move. The displaced headers and | |
| 2813 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2814 // back to the compiled code. The compiled code then pops the current | |
| 2815 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2816 // copies the interpreter locals and displaced headers where it wants. | |
| 2817 // Finally it calls back to free the temp buffer. | |
| 2818 // | |
| 2819 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2820 | |
| 2821 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2822 | |
| 2823 // | |
| 2824 // This code is dependent on the memory layout of the interpreter local | |
| 2825 // array and the monitors. On all of our platforms the layout is identical | |
| 2826 // so this code is shared. If some platform lays the their arrays out | |
| 2827 // differently then this code could move to platform specific code or | |
| 2828 // the code here could be modified to copy items one at a time using | |
| 2829 // frame accessor methods and be platform independent. | |
| 2830 | |
| 2831 frame fr = thread->last_frame(); | |
| 2832 assert( fr.is_interpreted_frame(), "" ); | |
| 2833 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2834 | |
| 2835 // Figure out how many monitors are active. | |
| 2836 int active_monitor_count = 0; | |
| 2837 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2838 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2839 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2840 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2841 } | |
| 2842 | |
| 2843 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2844 // could double check it. | |
| 2845 | |
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2846 Method* moop = fr.interpreter_frame_method(); |
| 0 | 2847 int max_locals = moop->max_locals(); |
| 2848 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2849 int buf_size_words = max_locals + active_monitor_count*2; | |
| 6197 | 2850 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
| 0 | 2851 |
| 2852 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2853 // Since there's no GC I can copy the oops blindly. | |
| 2854 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2855 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2856 (HeapWord*)&buf[0], |
| 2857 max_locals); | |
| 2858 | |
| 2859 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2860 int i = max_locals; | |
| 2861 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2862 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2863 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2864 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2865 BasicLock *lock = kptr2->lock(); | |
| 2866 // Inflate so the displaced header becomes position-independent | |
| 2867 if (lock->displaced_header()->is_unlocked()) | |
| 2868 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2869 // Now the displaced header is free to move | |
| 2870 buf[i++] = (intptr_t)lock->displaced_header(); | |
| 2871 buf[i++] = (intptr_t)kptr2->obj(); | |
| 2872 } | |
| 2873 } | |
| 2874 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2875 | |
| 2876 return buf; | |
| 2877 JRT_END | |
| 2878 | |
| 2879 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 6197 | 2880 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
| 0 | 2881 JRT_END |
| 2882 | |
| 2883 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
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2884 AdapterHandlerTableIterator iter(_adapters); |
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2885 while (iter.has_next()) { |
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2886 AdapterHandlerEntry* a = iter.next(); |
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2887 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 2888 } |
| 2889 return false; | |
| 2890 } | |
| 2891 | |
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2892 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
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2893 AdapterHandlerTableIterator iter(_adapters); |
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2894 while (iter.has_next()) { |
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2895 AdapterHandlerEntry* a = iter.next(); |
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2896 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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2897 st->print("Adapter for signature: "); |
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2898 a->print_adapter_on(tty); |
| 0 | 2899 return; |
| 2900 } | |
| 2901 } | |
| 2902 assert(false, "Should have found handler"); | |
| 2903 } | |
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2904 |
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2905 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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2906 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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2907 (intptr_t) this, fingerprint()->as_string(), |
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2908 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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2909 |
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2910 } |
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2911 |
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2912 #ifndef PRODUCT |
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2913 |
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2914 void AdapterHandlerLibrary::print_statistics() { |
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2915 _adapters->print_statistics(); |
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2916 } |
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2917 |
| 0 | 2918 #endif /* PRODUCT */ |