Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/sharedRuntime.cpp @ 7154:5d0bb7d52783
changes to support Graal co-existing with the other HotSpot compiler(s) and being used for explicit compilation requests and code installation via the Graal API
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 12 Dec 2012 21:36:40 +0100 |
| parents | 1baf7f1e3f23 |
| children | 291ffc492eb6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "code/compiledIC.hpp" | |
| 29 #include "code/scopeDesc.hpp" | |
| 30 #include "code/vtableStubs.hpp" | |
| 31 #include "compiler/abstractCompiler.hpp" | |
| 32 #include "compiler/compileBroker.hpp" | |
| 33 #include "compiler/compilerOracle.hpp" | |
| 34 #include "interpreter/interpreter.hpp" | |
| 35 #include "interpreter/interpreterRuntime.hpp" | |
| 36 #include "memory/gcLocker.inline.hpp" | |
| 37 #include "memory/universe.inline.hpp" | |
| 38 #include "oops/oop.inline.hpp" | |
| 39 #include "prims/forte.hpp" | |
| 40 #include "prims/jvmtiExport.hpp" | |
| 41 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
| 42 #include "prims/methodHandles.hpp" | |
| 43 #include "prims/nativeLookup.hpp" | |
| 44 #include "runtime/arguments.hpp" | |
| 45 #include "runtime/biasedLocking.hpp" | |
| 46 #include "runtime/handles.inline.hpp" | |
| 47 #include "runtime/init.hpp" | |
| 48 #include "runtime/interfaceSupport.hpp" | |
| 49 #include "runtime/javaCalls.hpp" | |
| 50 #include "runtime/sharedRuntime.hpp" | |
| 51 #include "runtime/stubRoutines.hpp" | |
| 52 #include "runtime/vframe.hpp" | |
| 53 #include "runtime/vframeArray.hpp" | |
| 54 #include "utilities/copy.hpp" | |
| 55 #include "utilities/dtrace.hpp" | |
| 56 #include "utilities/events.hpp" | |
| 57 #include "utilities/hashtable.inline.hpp" | |
| 58 #include "utilities/xmlstream.hpp" | |
| 59 #ifdef TARGET_ARCH_x86 | |
| 60 # include "nativeInst_x86.hpp" | |
| 61 # include "vmreg_x86.inline.hpp" | |
| 62 #endif | |
| 63 #ifdef TARGET_ARCH_sparc | |
| 64 # include "nativeInst_sparc.hpp" | |
| 65 # include "vmreg_sparc.inline.hpp" | |
| 66 #endif | |
| 67 #ifdef TARGET_ARCH_zero | |
| 68 # include "nativeInst_zero.hpp" | |
| 69 # include "vmreg_zero.inline.hpp" | |
| 70 #endif | |
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71 #ifdef TARGET_ARCH_arm |
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72 # include "nativeInst_arm.hpp" |
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73 # include "vmreg_arm.inline.hpp" |
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74 #endif |
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75 #ifdef TARGET_ARCH_ppc |
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76 # include "nativeInst_ppc.hpp" |
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77 # include "vmreg_ppc.inline.hpp" |
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78 #endif |
| 1972 | 79 #ifdef COMPILER1 |
| 80 #include "c1/c1_Runtime1.hpp" | |
| 81 #endif | |
| 82 | |
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83 // Shared stub locations |
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84 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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85 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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86 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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87 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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88 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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89 |
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90 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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91 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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92 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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93 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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94 |
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95 #ifdef COMPILER2 |
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96 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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97 #endif // COMPILER2 |
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98 |
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99 |
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100 //----------------------------generate_stubs----------------------------------- |
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101 void SharedRuntime::generate_stubs() { |
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102 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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103 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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104 _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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105 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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106 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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107 |
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108 #ifdef COMPILER2 |
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109 // Vectors are generated only by C2. |
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110 if (is_wide_vector(MaxVectorSize)) { |
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111 _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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112 } |
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113 #endif // COMPILER2 |
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114 _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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115 _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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116 |
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117 generate_deopt_blob(); |
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118 |
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119 #ifdef COMPILER2 |
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120 generate_uncommon_trap_blob(); |
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121 #endif // COMPILER2 |
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122 } |
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123 |
| 0 | 124 #include <math.h> |
| 125 | |
| 4006 | 126 #ifndef USDT2 |
| 0 | 127 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
| 128 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 129 char*, int, char*, int, char*, int); | |
| 130 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 131 char*, int, char*, int, char*, int); | |
| 4006 | 132 #endif /* !USDT2 */ |
| 0 | 133 |
| 134 // Implementation of SharedRuntime | |
| 135 | |
| 136 #ifndef PRODUCT | |
| 137 // For statistics | |
| 138 int SharedRuntime::_ic_miss_ctr = 0; | |
| 139 int SharedRuntime::_wrong_method_ctr = 0; | |
| 140 int SharedRuntime::_resolve_static_ctr = 0; | |
| 141 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 142 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 143 int SharedRuntime::_implicit_null_throws = 0; | |
| 144 int SharedRuntime::_implicit_div0_throws = 0; | |
| 145 int SharedRuntime::_throw_null_ctr = 0; | |
| 146 | |
| 147 int SharedRuntime::_nof_normal_calls = 0; | |
| 148 int SharedRuntime::_nof_optimized_calls = 0; | |
| 149 int SharedRuntime::_nof_inlined_calls = 0; | |
| 150 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 151 int SharedRuntime::_nof_static_calls = 0; | |
| 152 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 153 int SharedRuntime::_nof_interface_calls = 0; | |
| 154 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 155 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 156 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 157 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 158 | |
| 159 int SharedRuntime::_new_instance_ctr=0; | |
| 160 int SharedRuntime::_new_array_ctr=0; | |
| 161 int SharedRuntime::_multi1_ctr=0; | |
| 162 int SharedRuntime::_multi2_ctr=0; | |
| 163 int SharedRuntime::_multi3_ctr=0; | |
| 164 int SharedRuntime::_multi4_ctr=0; | |
| 165 int SharedRuntime::_multi5_ctr=0; | |
| 166 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 167 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 168 int SharedRuntime::_mon_enter_ctr=0; | |
| 169 int SharedRuntime::_mon_exit_ctr=0; | |
| 170 int SharedRuntime::_partial_subtype_ctr=0; | |
| 171 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 172 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 173 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 174 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 175 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 176 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 177 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 178 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 179 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 180 int SharedRuntime::_find_handler_ctr=0; | |
| 181 int SharedRuntime::_rethrow_ctr=0; | |
| 182 | |
| 183 int SharedRuntime::_ICmiss_index = 0; | |
| 184 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 185 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 186 | |
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187 |
| 0 | 188 void SharedRuntime::trace_ic_miss(address at) { |
| 189 for (int i = 0; i < _ICmiss_index; i++) { | |
| 190 if (_ICmiss_at[i] == at) { | |
| 191 _ICmiss_count[i]++; | |
| 192 return; | |
| 193 } | |
| 194 } | |
| 195 int index = _ICmiss_index++; | |
| 196 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 197 _ICmiss_at[index] = at; | |
| 198 _ICmiss_count[index] = 1; | |
| 199 } | |
| 200 | |
| 201 void SharedRuntime::print_ic_miss_histogram() { | |
| 202 if (ICMissHistogram) { | |
| 203 tty->print_cr ("IC Miss Histogram:"); | |
| 204 int tot_misses = 0; | |
| 205 for (int i = 0; i < _ICmiss_index; i++) { | |
| 206 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 207 tot_misses += _ICmiss_count[i]; | |
| 208 } | |
| 209 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 210 } | |
| 211 } | |
| 212 #endif // PRODUCT | |
| 213 | |
|
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214 #ifndef SERIALGC |
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215 |
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216 // G1 write-barrier pre: executed before a pointer store. |
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217 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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218 if (orig == NULL) { |
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219 assert(false, "should be optimized out"); |
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220 return; |
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221 } |
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222 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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223 // store the original value that was in the field reference |
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224 thread->satb_mark_queue().enqueue(orig); |
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225 JRT_END |
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226 |
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227 // G1 write-barrier post: executed after a pointer store. |
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228 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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229 thread->dirty_card_queue().enqueue(card_addr); |
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230 JRT_END |
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231 |
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232 #endif // !SERIALGC |
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233 |
| 0 | 234 |
| 235 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
| 236 return x * y; | |
| 237 JRT_END | |
| 238 | |
| 239 | |
| 240 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
| 241 if (x == min_jlong && y == CONST64(-1)) { | |
| 242 return x; | |
| 243 } else { | |
| 244 return x / y; | |
| 245 } | |
| 246 JRT_END | |
| 247 | |
| 248 | |
| 249 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
| 250 if (x == min_jlong && y == CONST64(-1)) { | |
| 251 return 0; | |
| 252 } else { | |
| 253 return x % y; | |
| 254 } | |
| 255 JRT_END | |
| 256 | |
| 257 | |
| 258 const juint float_sign_mask = 0x7FFFFFFF; | |
| 259 const juint float_infinity = 0x7F800000; | |
| 260 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
| 261 const julong double_infinity = CONST64(0x7FF0000000000000); | |
| 262 | |
| 263 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
| 264 #ifdef _WIN64 | |
| 265 // 64-bit Windows on amd64 returns the wrong values for | |
| 266 // infinity operands. | |
| 267 union { jfloat f; juint i; } xbits, ybits; | |
| 268 xbits.f = x; | |
| 269 ybits.f = y; | |
| 270 // x Mod Infinity == x unless x is infinity | |
| 271 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
| 272 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
| 273 return x; | |
| 274 } | |
| 275 #endif | |
| 276 return ((jfloat)fmod((double)x,(double)y)); | |
| 277 JRT_END | |
| 278 | |
| 279 | |
| 280 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
| 281 #ifdef _WIN64 | |
| 282 union { jdouble d; julong l; } xbits, ybits; | |
| 283 xbits.d = x; | |
| 284 ybits.d = y; | |
| 285 // x Mod Infinity == x unless x is infinity | |
| 286 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
| 287 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
| 288 return x; | |
| 289 } | |
| 290 #endif | |
| 291 return ((jdouble)fmod((double)x,(double)y)); | |
| 292 JRT_END | |
| 293 | |
|
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294 #ifdef __SOFTFP__ |
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295 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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296 return x + y; |
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297 JRT_END |
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298 |
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299 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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300 return x - y; |
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301 JRT_END |
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302 |
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303 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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304 return x * y; |
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305 JRT_END |
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306 |
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307 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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308 return x / y; |
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309 JRT_END |
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310 |
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311 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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312 return x + y; |
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313 JRT_END |
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314 |
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315 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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316 return x - y; |
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317 JRT_END |
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318 |
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319 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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320 return x * y; |
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321 JRT_END |
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322 |
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323 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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324 return x / y; |
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325 JRT_END |
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326 |
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327 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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328 return (jfloat)x; |
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329 JRT_END |
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330 |
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331 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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332 return (jdouble)x; |
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333 JRT_END |
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334 |
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335 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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336 return (jdouble)x; |
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337 JRT_END |
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338 |
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339 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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340 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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341 JRT_END |
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342 |
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343 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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344 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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345 JRT_END |
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346 |
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347 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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348 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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349 JRT_END |
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350 |
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351 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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352 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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353 JRT_END |
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354 |
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355 // Functions to return the opposite of the aeabi functions for nan. |
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356 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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357 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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358 JRT_END |
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359 |
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360 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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361 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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362 JRT_END |
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363 |
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364 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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365 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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366 JRT_END |
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367 |
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368 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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369 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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370 JRT_END |
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371 |
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372 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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373 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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374 JRT_END |
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375 |
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376 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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377 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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378 JRT_END |
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379 |
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380 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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381 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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382 JRT_END |
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383 |
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384 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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385 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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386 JRT_END |
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387 |
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388 // Intrinsics make gcc generate code for these. |
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389 float SharedRuntime::fneg(float f) { |
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390 return -f; |
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391 } |
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392 |
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393 double SharedRuntime::dneg(double f) { |
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394 return -f; |
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395 } |
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396 |
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397 #endif // __SOFTFP__ |
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398 |
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399 #if defined(__SOFTFP__) || defined(E500V2) |
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400 // Intrinsics make gcc generate code for these. |
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401 double SharedRuntime::dabs(double f) { |
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402 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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403 } |
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404 |
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1868
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405 #endif |
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406 |
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407 #if defined(__SOFTFP__) || defined(PPC) |
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408 double SharedRuntime::dsqrt(double f) { |
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409 return sqrt(f); |
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410 } |
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411 #endif |
| 0 | 412 |
| 413 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
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508
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414 if (g_isnan(x)) |
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415 return 0; |
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416 if (x >= (jfloat) max_jint) |
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417 return max_jint; |
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418 if (x <= (jfloat) min_jint) |
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419 return min_jint; |
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420 return (jint) x; |
| 0 | 421 JRT_END |
| 422 | |
| 423 | |
| 424 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
|
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425 if (g_isnan(x)) |
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426 return 0; |
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427 if (x >= (jfloat) max_jlong) |
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428 return max_jlong; |
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429 if (x <= (jfloat) min_jlong) |
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430 return min_jlong; |
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431 return (jlong) x; |
| 0 | 432 JRT_END |
| 433 | |
| 434 | |
| 435 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
|
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436 if (g_isnan(x)) |
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437 return 0; |
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438 if (x >= (jdouble) max_jint) |
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439 return max_jint; |
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440 if (x <= (jdouble) min_jint) |
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441 return min_jint; |
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442 return (jint) x; |
| 0 | 443 JRT_END |
| 444 | |
| 445 | |
| 446 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
|
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447 if (g_isnan(x)) |
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448 return 0; |
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449 if (x >= (jdouble) max_jlong) |
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450 return max_jlong; |
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451 if (x <= (jdouble) min_jlong) |
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452 return min_jlong; |
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453 return (jlong) x; |
| 0 | 454 JRT_END |
| 455 | |
| 456 | |
| 457 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
| 458 return (jfloat)x; | |
| 459 JRT_END | |
| 460 | |
| 461 | |
| 462 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
| 463 return (jfloat)x; | |
| 464 JRT_END | |
| 465 | |
| 466 | |
| 467 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
| 468 return (jdouble)x; | |
| 469 JRT_END | |
| 470 | |
| 471 // Exception handling accross interpreter/compiler boundaries | |
| 472 // | |
| 473 // exception_handler_for_return_address(...) returns the continuation address. | |
| 474 // The continuation address is the entry point of the exception handler of the | |
| 475 // previous frame depending on the return address. | |
| 476 | |
| 1295 | 477 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
|
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478 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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479 |
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480 // Reset method handle flag. |
|
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481 thread->set_is_method_handle_return(false); |
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482 |
|
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483 // The fastest case first |
| 0 | 484 CodeBlob* blob = CodeCache::find_blob(return_address); |
|
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485 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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486 if (nm != NULL) { |
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487 // Set flag if return address is a method handle call site. |
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488 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
| 0 | 489 // native nmethods don't have exception handlers |
|
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490 assert(!nm->is_native_method(), "no exception handler"); |
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491 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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492 if (nm->is_deopt_pc(return_address)) { |
| 0 | 493 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
| 494 } else { | |
|
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495 return nm->exception_begin(); |
| 0 | 496 } |
| 497 } | |
| 498 | |
| 499 // Entry code | |
| 500 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 501 return StubRoutines::catch_exception_entry(); | |
| 502 } | |
| 503 // Interpreted code | |
| 504 if (Interpreter::contains(return_address)) { | |
| 505 return Interpreter::rethrow_exception_entry(); | |
| 506 } | |
| 507 | |
|
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508 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
| 0 | 509 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
|
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510 |
| 0 | 511 #ifndef PRODUCT |
| 512 { ResourceMark rm; | |
| 513 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 514 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 515 tty->print_cr("b) other problem"); | |
| 516 } | |
| 517 #endif // PRODUCT | |
|
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518 |
| 0 | 519 ShouldNotReachHere(); |
| 520 return NULL; | |
| 521 } | |
| 522 | |
| 523 | |
| 1295 | 524 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 525 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 526 JRT_END |
| 527 | |
| 1295 | 528 |
| 0 | 529 address SharedRuntime::get_poll_stub(address pc) { |
| 530 address stub; | |
| 531 // Look up the code blob | |
| 532 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 533 | |
| 534 // Should be an nmethod | |
| 535 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 536 | |
| 537 // Look up the relocation information | |
| 538 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 539 "safepoint polling: type must be poll" ); | |
| 540 | |
| 541 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 542 "Only polling locations are used for safepoint"); | |
| 543 | |
| 544 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
|
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545 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
| 0 | 546 if (at_poll_return) { |
| 547 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 548 "polling page return stub not created yet"); | |
| 1748 | 549 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
|
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550 } else if (has_wide_vectors) { |
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551 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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552 "polling page vectors safepoint stub not created yet"); |
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553 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
| 0 | 554 } else { |
| 555 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 556 "polling page safepoint stub not created yet"); | |
| 1748 | 557 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 558 } |
| 559 #ifndef PRODUCT | |
| 560 if( TraceSafepoint ) { | |
| 561 char buf[256]; | |
| 562 jio_snprintf(buf, sizeof(buf), | |
| 563 "... found polling page %s exception at pc = " | |
| 564 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 565 at_poll_return ? "return" : "loop", | |
| 566 (intptr_t)pc, (intptr_t)stub); | |
| 567 tty->print_raw_cr(buf); | |
| 568 } | |
| 569 #endif // PRODUCT | |
| 570 return stub; | |
| 571 } | |
| 572 | |
| 573 | |
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574 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 575 assert(caller.is_interpreted_frame(), ""); |
| 576 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 577 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
| 578 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
| 579 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
| 580 return result; | |
| 581 } | |
| 582 | |
| 583 | |
| 584 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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585 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 586 vframeStream vfst(thread, true); |
| 587 methodHandle method = methodHandle(thread, vfst.method()); | |
| 588 address bcp = method()->bcp_from(vfst.bci()); | |
| 589 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 590 } | |
| 591 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 592 } | |
| 593 | |
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594 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 595 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 596 throw_and_post_jvmti_exception(thread, h_exception); | |
| 597 } | |
| 598 | |
|
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599 // The interpreter code to call this tracing function is only |
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600 // called/generated when TraceRedefineClasses has the right bits |
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601 // set. Since obsolete methods are never compiled, we don't have |
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602 // to modify the compilers to generate calls to this function. |
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603 // |
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604 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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605 JavaThread* thread, Method* method)) |
|
610
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606 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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607 |
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608 if (method->is_obsolete()) { |
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609 // We are calling an obsolete method, but this is not necessarily |
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610 // an error. Our method could have been redefined just after we |
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611 // fetched the Method* from the constant pool. |
|
610
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612 |
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613 // RC_TRACE macro has an embedded ResourceMark |
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614 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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615 ("calling obsolete method '%s'", |
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616 method->name_and_sig_as_C_string())); |
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617 if (RC_TRACE_ENABLED(0x00002000)) { |
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618 // this option is provided to debug calls to obsolete methods |
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619 guarantee(false, "faulting at call to an obsolete method."); |
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620 } |
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621 } |
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622 return 0; |
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623 JRT_END |
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624 |
| 0 | 625 // ret_pc points into caller; we are returning caller's exception handler |
| 626 // for given exception | |
| 627 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 628 bool force_unwind, bool top_frame_only) { | |
| 629 assert(nm != NULL, "must exist"); | |
| 630 ResourceMark rm; | |
| 631 | |
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632 #ifdef GRAAL |
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633 if (nm->is_compiled_by_graal()) { |
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634 // lookup exception handler for this pc |
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635 int catch_pco = ret_pc - nm->code_begin(); |
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636 ExceptionHandlerTable table(nm); |
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637 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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638 if (t != NULL) { |
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639 return nm->code_begin() + t->pco(); |
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640 } else { |
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641 // there is no exception handler for this pc => deoptimize |
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642 nm->make_not_entrant(); |
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643 JavaThread* thread = JavaThread::current(); |
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644 RegisterMap reg_map(thread); |
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645 frame runtime_frame = thread->last_frame(); |
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646 frame caller_frame = runtime_frame.sender(®_map); |
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647 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_not_compiled_exception_handler); |
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648 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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649 } |
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650 } |
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651 #endif |
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652 |
| 0 | 653 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
| 654 // determine handler bci, if any | |
| 655 EXCEPTION_MARK; | |
| 656 | |
| 657 int handler_bci = -1; | |
| 658 int scope_depth = 0; | |
| 659 if (!force_unwind) { | |
| 660 int bci = sd->bci(); | |
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661 bool recursive_exception = false; |
| 0 | 662 do { |
| 663 bool skip_scope_increment = false; | |
| 664 // exception handler lookup | |
| 665 KlassHandle ek (THREAD, exception->klass()); | |
| 666 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
| 667 if (HAS_PENDING_EXCEPTION) { | |
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668 recursive_exception = true; |
| 0 | 669 // We threw an exception while trying to find the exception handler. |
| 670 // Transfer the new exception to the exception handle which will | |
| 671 // be set into thread local storage, and do another lookup for an | |
| 672 // exception handler for this exception, this time starting at the | |
| 673 // BCI of the exception handler which caused the exception to be | |
| 674 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 675 // argument to ensure that the correct exception is thrown (4870175). | |
| 676 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 677 CLEAR_PENDING_EXCEPTION; | |
| 678 if (handler_bci >= 0) { | |
| 679 bci = handler_bci; | |
| 680 handler_bci = -1; | |
| 681 skip_scope_increment = true; | |
| 682 } | |
| 683 } | |
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684 else { |
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685 recursive_exception = false; |
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686 } |
| 0 | 687 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
| 688 sd = sd->sender(); | |
| 689 if (sd != NULL) { | |
| 690 bci = sd->bci(); | |
| 691 } | |
| 692 ++scope_depth; | |
| 693 } | |
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694 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
| 0 | 695 } |
| 696 | |
| 697 // found handling method => lookup exception handler | |
| 1748 | 698 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 699 |
| 700 ExceptionHandlerTable table(nm); | |
| 701 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 702 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 703 // Allow abbreviated catch tables. The idea is to allow a method | |
| 704 // to materialize its exceptions without committing to the exact | |
| 705 // routing of exceptions. In particular this is needed for adding | |
| 706 // a synthethic handler to unlock monitors when inlining | |
| 707 // synchonized methods since the unlock path isn't represented in | |
| 708 // the bytecodes. | |
| 709 t = table.entry_for(catch_pco, -1, 0); | |
| 710 } | |
| 711 | |
|
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712 #ifdef COMPILER1 |
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713 if (t == NULL && nm->is_compiled_by_c1()) { |
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714 assert(nm->unwind_handler_begin() != NULL, ""); |
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715 return nm->unwind_handler_begin(); |
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716 } |
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717 #endif |
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718 |
| 0 | 719 if (t == NULL) { |
| 720 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 721 tty->print_cr(" Exception:"); | |
| 722 exception->print(); | |
| 723 tty->cr(); | |
| 724 tty->print_cr(" Compiled exception table :"); | |
| 725 table.print(); | |
| 726 nm->print_code(); | |
| 727 guarantee(false, "missing exception handler"); | |
| 728 return NULL; | |
| 729 } | |
| 730 | |
| 1748 | 731 return nm->code_begin() + t->pco(); |
| 0 | 732 } |
| 733 | |
| 734 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 735 // These errors occur only at call sites | |
| 736 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 737 JRT_END | |
| 738 | |
|
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739 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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740 // These errors occur only at call sites |
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741 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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742 JRT_END |
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743 |
| 0 | 744 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 745 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 746 JRT_END | |
| 747 | |
| 748 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 749 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 750 JRT_END | |
| 751 | |
| 752 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 753 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 754 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 755 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 756 JRT_END | |
| 757 | |
| 758 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 759 // We avoid using the normal exception construction in this case because | |
| 760 // it performs an upcall to Java, and we're already out of stack space. | |
|
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761 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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762 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
| 0 | 763 Handle exception (thread, exception_oop); |
| 764 if (StackTraceInThrowable) { | |
| 765 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 766 } | |
| 767 throw_and_post_jvmti_exception(thread, exception); | |
| 768 JRT_END | |
| 769 | |
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770 #ifdef GRAAL |
|
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771 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
|
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772 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
|
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773 if (TraceSignals) { |
|
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|
774 tty->print_cr(err_msg("Deoptimizing on implicit exception at relative pc=%d in method %s", pc - nm->entry_point(), nm->method()->name()->as_C_string())); |
|
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775 } |
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|
776 thread->_ScratchA = (intptr_t)pc; |
|
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777 thread->_ScratchB = Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret); |
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778 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
|
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779 } |
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780 #endif |
|
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781 |
| 0 | 782 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
| 783 address pc, | |
| 784 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 785 { | |
| 786 address target_pc = NULL; | |
| 787 | |
| 788 if (Interpreter::contains(pc)) { | |
| 789 #ifdef CC_INTERP | |
| 790 // C++ interpreter doesn't throw implicit exceptions | |
| 791 ShouldNotReachHere(); | |
| 792 #else | |
| 793 switch (exception_kind) { | |
| 794 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 795 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 796 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 797 default: ShouldNotReachHere(); | |
| 798 } | |
| 799 #endif // !CC_INTERP | |
| 800 } else { | |
| 801 switch (exception_kind) { | |
| 802 case STACK_OVERFLOW: { | |
| 803 // Stack overflow only occurs upon frame setup; the callee is | |
| 804 // going to be unwound. Dispatch to a shared runtime stub | |
| 805 // which will cause the StackOverflowError to be fabricated | |
| 806 // and processed. | |
| 807 // For stack overflow in deoptimization blob, cleanup thread. | |
| 808 if (thread->deopt_mark() != NULL) { | |
| 809 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 810 } | |
| 4944 | 811 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
| 0 | 812 return StubRoutines::throw_StackOverflowError_entry(); |
| 813 } | |
| 814 | |
| 815 case IMPLICIT_NULL: { | |
| 816 if (VtableStubs::contains(pc)) { | |
| 817 // We haven't yet entered the callee frame. Fabricate an | |
| 818 // exception and begin dispatching it in the caller. Since | |
| 819 // the caller was at a call site, it's safe to destroy all | |
| 820 // caller-saved registers, as these entry points do. | |
| 821 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
|
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822 |
|
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823 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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824 if (vt_stub == NULL) return NULL; |
|
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825 |
| 0 | 826 if (vt_stub->is_abstract_method_error(pc)) { |
| 827 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 4944 | 828 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
| 0 | 829 return StubRoutines::throw_AbstractMethodError_entry(); |
| 830 } else { | |
| 4944 | 831 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
| 0 | 832 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 833 } | |
| 834 } else { | |
| 835 CodeBlob* cb = CodeCache::find_blob(pc); | |
|
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836 |
|
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837 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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|
838 if (cb == NULL) return NULL; |
| 0 | 839 |
| 840 // Exception happened in CodeCache. Must be either: | |
| 841 // 1. Inline-cache check in C2I handler blob, | |
| 842 // 2. Inline-cache check in nmethod, or | |
| 843 // 3. Implict null exception in nmethod | |
| 844 | |
| 845 if (!cb->is_nmethod()) { | |
|
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9eba43136cb5
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twisti
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|
846 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
|
465
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|
847 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
| 4944 | 848 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
| 0 | 849 // There is no handler here, so we will simply unwind. |
| 850 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 851 } | |
| 852 | |
| 853 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 854 nmethod* nm = (nmethod*)cb; | |
| 855 if (nm->inlinecache_check_contains(pc)) { | |
| 856 // exception happened inside inline-cache check code | |
| 857 // => the nmethod is not yet active (i.e., the frame | |
| 858 // is not set up yet) => use return address pushed by | |
| 859 // caller => don't push another return address | |
| 4944 | 860 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
| 0 | 861 return StubRoutines::throw_NullPointerException_at_call_entry(); |
| 862 } | |
| 863 | |
|
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864 if (nm->method()->is_method_handle_intrinsic()) { |
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865 // exception happened inside MH dispatch code, similar to a vtable stub |
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866 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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867 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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868 } |
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869 |
| 0 | 870 #ifndef PRODUCT |
| 871 _implicit_null_throws++; | |
| 872 #endif | |
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873 #ifdef GRAAL |
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874 if (nm->is_compiled_by_graal()) { |
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875 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
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876 } else { |
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877 #endif |
| 0 | 878 target_pc = nm->continuation_for_implicit_exception(pc); |
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879 #ifdef GRAAL |
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880 } |
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881 #endif |
| 1250 | 882 // If there's an unexpected fault, target_pc might be NULL, |
| 883 // in which case we want to fall through into the normal | |
| 884 // error handling code. | |
| 0 | 885 } |
| 886 | |
| 887 break; // fall through | |
| 888 } | |
| 889 | |
| 890 | |
| 891 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 892 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 893 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 894 #ifndef PRODUCT | |
| 895 _implicit_div0_throws++; | |
| 896 #endif | |
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897 #ifdef GRAAL |
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898 if (nm->is_compiled_by_graal()) { |
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899 if (TraceSignals) { |
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900 tty->print_cr("Graal implicit div0"); |
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901 } |
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902 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
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903 } else { |
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904 #endif |
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905 target_pc = nm->continuation_for_implicit_exception(pc); |
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906 #ifdef GRAAL |
|
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907 } |
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908 #endif |
| 1250 | 909 // If there's an unexpected fault, target_pc might be NULL, |
| 910 // in which case we want to fall through into the normal | |
| 911 // error handling code. | |
| 0 | 912 break; // fall through |
| 913 } | |
| 914 | |
| 915 default: ShouldNotReachHere(); | |
| 916 } | |
| 917 | |
| 918 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 919 | |
| 920 // for AbortVMOnException flag | |
| 921 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 922 if (exception_kind == IMPLICIT_NULL) { | |
|
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923 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 924 } else { |
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925 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
| 0 | 926 } |
| 927 return target_pc; | |
| 928 } | |
| 929 | |
| 930 ShouldNotReachHere(); | |
| 931 return NULL; | |
| 932 } | |
| 933 | |
| 934 | |
| 935 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
| 936 { | |
| 937 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
| 938 } | |
| 939 JNI_END | |
| 940 | |
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941 JNI_ENTRY(void, throw_unsupported_operation_exception(JNIEnv* env, ...)) |
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942 { |
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943 THROW(vmSymbols::java_lang_UnsupportedOperationException()); |
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944 } |
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945 JNI_END |
| 0 | 946 |
| 947 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 948 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 949 } | |
| 950 | |
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951 address SharedRuntime::native_method_throw_unsupported_operation_exception_entry() { |
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952 return CAST_FROM_FN_PTR(address, &throw_unsupported_operation_exception); |
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953 } |
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954 |
| 0 | 955 |
| 956 #ifndef PRODUCT | |
| 957 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 958 const frame f = thread->last_frame(); | |
| 959 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 960 #ifndef PRODUCT | |
| 961 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 962 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 963 #endif // !PRODUCT | |
| 964 return preserve_this_value; | |
| 965 JRT_END | |
| 966 #endif // !PRODUCT | |
| 967 | |
| 968 | |
| 969 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 970 os::yield_all(attempts); | |
| 971 JRT_END | |
| 972 | |
| 973 | |
| 974 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 975 assert(obj->is_oop(), "must be a valid oop"); | |
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976 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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977 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 978 JRT_END |
| 979 | |
| 980 | |
| 981 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 982 if (thread != NULL) { | |
| 983 if (thread->is_Java_thread()) { | |
| 984 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 985 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 986 } | |
| 987 } | |
| 988 return 0; | |
| 989 } | |
| 990 | |
| 991 /** | |
| 992 * This function ought to be a void function, but cannot be because | |
| 993 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 994 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 995 */ | |
| 996 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 997 return dtrace_object_alloc_base(Thread::current(), o); | |
| 998 } | |
| 999 | |
| 1000 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 1001 assert(DTraceAllocProbes, "wrong call"); | |
|
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1002 Klass* klass = o->klass(); |
| 0 | 1003 int size = o->size(); |
|
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1004 Symbol* name = klass->name(); |
| 4006 | 1005 #ifndef USDT2 |
| 0 | 1006 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 1007 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 4006 | 1008 #else /* USDT2 */ |
| 1009 HOTSPOT_OBJECT_ALLOC( | |
| 1010 get_java_tid(thread), | |
| 1011 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 1012 #endif /* USDT2 */ | |
| 0 | 1013 return 0; |
| 1014 } | |
| 1015 | |
| 1016 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1017 JavaThread* thread, Method* method)) |
| 0 | 1018 assert(DTraceMethodProbes, "wrong call"); |
|
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1019 Symbol* kname = method->klass_name(); |
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1020 Symbol* name = method->name(); |
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1021 Symbol* sig = method->signature(); |
| 4006 | 1022 #ifndef USDT2 |
| 0 | 1023 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 1024 kname->bytes(), kname->utf8_length(), | |
| 1025 name->bytes(), name->utf8_length(), | |
| 1026 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1027 #else /* USDT2 */ |
| 1028 HOTSPOT_METHOD_ENTRY( | |
| 1029 get_java_tid(thread), | |
| 1030 (char *) kname->bytes(), kname->utf8_length(), | |
| 1031 (char *) name->bytes(), name->utf8_length(), | |
| 1032 (char *) sig->bytes(), sig->utf8_length()); | |
| 1033 #endif /* USDT2 */ | |
| 0 | 1034 return 0; |
| 1035 JRT_END | |
| 1036 | |
| 1037 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
|
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1038 JavaThread* thread, Method* method)) |
| 0 | 1039 assert(DTraceMethodProbes, "wrong call"); |
|
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1040 Symbol* kname = method->klass_name(); |
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1041 Symbol* name = method->name(); |
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1042 Symbol* sig = method->signature(); |
| 4006 | 1043 #ifndef USDT2 |
| 0 | 1044 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 1045 kname->bytes(), kname->utf8_length(), | |
| 1046 name->bytes(), name->utf8_length(), | |
| 1047 sig->bytes(), sig->utf8_length()); | |
| 4006 | 1048 #else /* USDT2 */ |
| 1049 HOTSPOT_METHOD_RETURN( | |
| 1050 get_java_tid(thread), | |
| 1051 (char *) kname->bytes(), kname->utf8_length(), | |
| 1052 (char *) name->bytes(), name->utf8_length(), | |
| 1053 (char *) sig->bytes(), sig->utf8_length()); | |
| 1054 #endif /* USDT2 */ | |
| 0 | 1055 return 0; |
| 1056 JRT_END | |
| 1057 | |
| 1058 | |
| 1059 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 1060 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1061 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 1062 // vtable updates, etc. Caller frame must be compiled. | |
| 1063 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 1064 ResourceMark rm(THREAD); | |
| 1065 | |
| 1066 // last java frame on stack (which includes native call frames) | |
| 1067 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 1068 | |
| 1069 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 1070 } | |
| 1071 | |
| 1072 | |
| 1073 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 1074 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 1075 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 1076 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 1077 vframeStream& vfst, | |
| 1078 Bytecodes::Code& bc, | |
| 1079 CallInfo& callinfo, TRAPS) { | |
| 1080 Handle receiver; | |
| 1081 Handle nullHandle; //create a handy null handle for exception returns | |
| 1082 | |
| 1083 assert(!vfst.at_end(), "Java frame must exist"); | |
| 1084 | |
| 1085 // Find caller and bci from vframe | |
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1086 methodHandle caller(THREAD, vfst.method()); |
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1087 int bci = vfst.bci(); |
| 0 | 1088 |
| 1089 // Find bytecode | |
| 2142 | 1090 Bytecode_invoke bytecode(caller, bci); |
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1091 bc = bytecode.invoke_code(); |
| 2142 | 1092 int bytecode_index = bytecode.index(); |
| 0 | 1093 |
| 1094 // Find receiver for non-static call | |
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1095 if (bc != Bytecodes::_invokestatic && |
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1096 bc != Bytecodes::_invokedynamic) { |
| 0 | 1097 // This register map must be update since we need to find the receiver for |
| 1098 // compiled frames. The receiver might be in a register. | |
| 1099 RegisterMap reg_map2(thread); | |
| 1100 frame stubFrame = thread->last_frame(); | |
| 1101 // Caller-frame is a compiled frame | |
| 1102 frame callerFrame = stubFrame.sender(®_map2); | |
| 1103 | |
| 2142 | 1104 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 1105 if (callee.is_null()) { |
| 1106 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 1107 } | |
| 1108 // Retrieve from a compiled argument list | |
| 1109 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 1110 | |
| 1111 if (receiver.is_null()) { | |
| 1112 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 1113 } | |
| 1114 } | |
| 1115 | |
| 1116 // Resolve method. This is parameterized by bytecode. | |
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1117 constantPoolHandle constants(THREAD, caller->constants()); |
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1118 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
| 0 | 1119 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
| 1120 | |
| 1121 #ifdef ASSERT | |
| 1122 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1123 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
| 0 | 1124 assert(receiver.not_null(), "should have thrown exception"); |
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1125 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1126 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
| 0 | 1127 // klass is already loaded |
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1128 KlassHandle static_receiver_klass(THREAD, rk); |
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1129 // Method handle invokes might have been optimized to a direct call |
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1130 // so don't check for the receiver class. |
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1131 // FIXME this weakens the assert too much |
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1132 methodHandle callee = callinfo.selected_method(); |
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1133 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1134 callee->is_method_handle_intrinsic() || |
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1135 callee->is_compiled_lambda_form(), |
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1136 "actual receiver must be subclass of static receiver klass"); |
| 0 | 1137 if (receiver_klass->oop_is_instance()) { |
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1138 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
| 0 | 1139 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1140 receiver_klass()->print(); |
| 0 | 1141 } |
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1142 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
| 0 | 1143 } |
| 1144 } | |
| 1145 #endif | |
| 1146 | |
| 1147 return receiver; | |
| 1148 } | |
| 1149 | |
| 1150 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1151 ResourceMark rm(THREAD); | |
| 1152 // We need first to check if any Java activations (compiled, interpreted) | |
| 1153 // exist on the stack since last JavaCall. If not, we need | |
| 1154 // to get the target method from the JavaCall wrapper. | |
| 1155 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1156 methodHandle callee_method; | |
| 1157 if (vfst.at_end()) { | |
| 1158 // No Java frames were found on stack since we did the JavaCall. | |
| 1159 // Hence the stack can only contain an entry_frame. We need to | |
| 1160 // find the target method from the stub frame. | |
| 1161 RegisterMap reg_map(thread, false); | |
| 1162 frame fr = thread->last_frame(); | |
| 1163 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1164 fr = fr.sender(®_map); | |
| 1165 assert(fr.is_entry_frame(), "must be"); | |
| 1166 // fr is now pointing to the entry frame. | |
| 1167 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1168 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1169 } else { | |
| 1170 Bytecodes::Code bc; | |
| 1171 CallInfo callinfo; | |
| 1172 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1173 callee_method = callinfo.selected_method(); | |
| 1174 } | |
| 1175 assert(callee_method()->is_method(), "must be"); | |
| 1176 return callee_method; | |
| 1177 } | |
| 1178 | |
| 1179 // Resolves a call. | |
| 1180 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1181 bool is_virtual, | |
| 1182 bool is_optimized, TRAPS) { | |
| 1183 methodHandle callee_method; | |
| 1184 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1185 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1186 int retry_count = 0; | |
| 1187 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1188 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1189 // If has a pending exception then there is no need to re-try to |
| 1190 // resolve this method. | |
| 1191 // If the method has been redefined, we need to try again. | |
| 1192 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1193 // require that java.lang.Object has been updated. | |
| 1194 | |
| 1195 // It is very unlikely that method is redefined more than 100 times | |
| 1196 // in the middle of resolve. If it is looping here more than 100 times | |
| 1197 // means then there could be a bug here. | |
| 1198 guarantee((retry_count++ < 100), | |
| 1199 "Could not resolve to latest version of redefined method"); | |
| 1200 // method is redefined in the middle of resolve so re-try. | |
| 1201 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1202 } | |
| 1203 } | |
| 1204 return callee_method; | |
| 1205 } | |
| 1206 | |
| 1207 // Resolves a call. The compilers generate code for calls that go here | |
| 1208 // and are patched with the real destination of the call. | |
| 1209 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1210 bool is_virtual, | |
| 1211 bool is_optimized, TRAPS) { | |
| 1212 | |
| 1213 ResourceMark rm(thread); | |
| 1214 RegisterMap cbl_map(thread, false); | |
| 1215 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1216 | |
| 1295 | 1217 CodeBlob* caller_cb = caller_frame.cb(); |
| 1218 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1219 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 0 | 1220 // make sure caller is not getting deoptimized |
| 1221 // and removed before we are done with it. | |
| 1222 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1223 nmethodLocker caller_lock(caller_nm); |
| 0 | 1224 |
| 1225 | |
| 1226 // determine call info & receiver | |
| 1227 // note: a) receiver is NULL for static calls | |
| 1228 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1229 CallInfo call_info; | |
| 1230 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1231 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1232 call_info, CHECK_(methodHandle())); | |
| 1233 methodHandle callee_method = call_info.selected_method(); | |
| 1234 | |
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1235 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1236 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1237 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1238 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
| 0 | 1239 |
| 1240 #ifndef PRODUCT | |
| 1241 // tracing/debugging/statistics | |
| 1242 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1243 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1244 (&_resolve_static_ctr); | |
| 1245 Atomic::inc(addr); | |
| 1246 | |
| 1247 if (TraceCallFixup) { | |
| 1248 ResourceMark rm(thread); | |
| 1249 tty->print("resolving %s%s (%s) call to", | |
| 1250 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1251 Bytecodes::name(invoke_code)); | |
| 1252 callee_method->print_short_name(tty); | |
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1253 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
| 0 | 1254 } |
| 1255 #endif | |
| 1256 | |
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1257 // JSR 292 key invariant: |
| 1295 | 1258 // If the resolved method is a MethodHandle invoke target the call |
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1259 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1260 // leaving the stack in a state unknown to either caller or callee |
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1261 // TODO detune for now but we might need it again |
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1262 // assert(!callee_method->is_compiled_lambda_form() || |
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1263 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
| 1295 | 1264 |
| 0 | 1265 // Compute entry points. This might require generation of C2I converter |
| 1266 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1267 // computation of the entry points is independent of patching the call. We | |
| 1268 // always return the entry-point, but we only patch the stub if the call has | |
| 1269 // not been deoptimized. Return values: For a virtual call this is an | |
| 1270 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1271 // virtual this is just a destination address. | |
| 1272 | |
| 1273 StaticCallInfo static_call_info; | |
| 1274 CompiledICInfo virtual_call_info; | |
| 1275 | |
| 1276 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1277 // we are done patching the code. | |
| 1295 | 1278 nmethod* callee_nm = callee_method->code(); |
| 1279 nmethodLocker nl_callee(callee_nm); | |
| 0 | 1280 #ifdef ASSERT |
| 1295 | 1281 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1282 #endif |
| 1283 | |
| 1284 if (is_virtual) { | |
| 1285 assert(receiver.not_null(), "sanity check"); | |
| 1286 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
| 1287 KlassHandle h_klass(THREAD, receiver->klass()); | |
| 1288 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
| 1289 is_optimized, static_bound, virtual_call_info, | |
| 1290 CHECK_(methodHandle())); | |
| 1291 } else { | |
| 1292 // static call | |
| 1293 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1294 } | |
| 1295 | |
| 1296 // grab lock, check for deoptimization and potentially patch caller | |
| 1297 { | |
| 1298 MutexLocker ml_patch(CompiledIC_lock); | |
| 1299 | |
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1300 // Now that we are ready to patch if the Method* was redefined then |
| 0 | 1301 // don't update call site and let the caller retry. |
| 1302 | |
| 1303 if (!callee_method->is_old()) { | |
| 1304 #ifdef ASSERT | |
| 1305 // We must not try to patch to jump to an already unloaded method. | |
| 1306 if (dest_entry_point != 0) { | |
| 1307 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
| 1308 "should not unload nmethod while locked"); | |
| 1309 } | |
| 1310 #endif | |
| 1311 if (is_virtual) { | |
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1312 nmethod* nm = callee_nm; |
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1313 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1314 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
| 0 | 1315 if (inline_cache->is_clean()) { |
| 1316 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1317 } | |
| 1318 } else { | |
| 1319 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1320 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1321 } | |
| 1322 } | |
| 1323 | |
| 1324 } // unlock CompiledIC_lock | |
| 1325 | |
| 1326 return callee_method; | |
| 1327 } | |
| 1328 | |
| 1329 | |
| 1330 // Inline caches exist only in compiled code | |
| 1331 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1332 #ifdef ASSERT | |
| 1333 RegisterMap reg_map(thread, false); | |
| 1334 frame stub_frame = thread->last_frame(); | |
| 1335 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1336 frame caller_frame = stub_frame.sender(®_map); | |
| 1337 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
| 1338 #endif /* ASSERT */ | |
| 1339 | |
| 1340 methodHandle callee_method; | |
| 1341 JRT_BLOCK | |
| 1342 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1343 // Return Method* through TLS |
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1344 thread->set_vm_result_2(callee_method()); |
| 0 | 1345 JRT_BLOCK_END |
| 1346 // return compiled code entry point after potential safepoints | |
| 1347 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1348 return callee_method->verified_code_entry(); | |
| 1349 JRT_END | |
| 1350 | |
| 1351 | |
| 1352 // Handle call site that has been made non-entrant | |
| 1353 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1354 // 6243940 We might end up in here if the callee is deoptimized | |
| 1355 // as we race to call it. We don't want to take a safepoint if | |
| 1356 // the caller was interpreted because the caller frame will look | |
| 1357 // interpreted to the stack walkers and arguments are now | |
| 1358 // "compiled" so it is much better to make this transition | |
| 1359 // invisible to the stack walking code. The i2c path will | |
| 1360 // place the callee method in the callee_target. It is stashed | |
| 1361 // there because if we try and find the callee by normal means a | |
| 1362 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1363 RegisterMap reg_map(thread, false); | |
| 1364 frame stub_frame = thread->last_frame(); | |
| 1365 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1366 frame caller_frame = stub_frame.sender(®_map); | |
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1367 |
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1368 // MethodHandle invokes don't have a CompiledIC and should always |
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1369 // simply redispatch to the callee_target. |
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1370 address sender_pc = caller_frame.pc(); |
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1371 CodeBlob* sender_cb = caller_frame.cb(); |
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1372 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
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1373 |
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1374 if (caller_frame.is_interpreted_frame() || |
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1375 caller_frame.is_entry_frame()) { |
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1376 Method* callee = thread->callee_target(); |
| 0 | 1377 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1378 thread->set_vm_result_2(callee); |
| 0 | 1379 thread->set_callee_target(NULL); |
| 1380 return callee->get_c2i_entry(); | |
| 1381 } | |
| 1382 | |
| 1383 // Must be compiled to compiled path which is safe to stackwalk | |
| 1384 methodHandle callee_method; | |
| 1385 JRT_BLOCK | |
| 1386 // Force resolving of caller (if we called from compiled frame) | |
| 1387 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1388 thread->set_vm_result_2(callee_method()); |
| 0 | 1389 JRT_BLOCK_END |
| 1390 // return compiled code entry point after potential safepoints | |
| 1391 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1392 return callee_method->verified_code_entry(); | |
| 1393 JRT_END | |
| 1394 | |
| 1395 | |
| 1396 // resolve a static call and patch code | |
| 1397 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1398 methodHandle callee_method; | |
| 1399 JRT_BLOCK | |
| 1400 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1401 thread->set_vm_result_2(callee_method()); |
| 0 | 1402 JRT_BLOCK_END |
| 1403 // return compiled code entry point after potential safepoints | |
| 1404 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1405 return callee_method->verified_code_entry(); | |
| 1406 JRT_END | |
| 1407 | |
| 1408 | |
| 1409 // resolve virtual call and update inline cache to monomorphic | |
| 1410 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1411 methodHandle callee_method; | |
| 1412 JRT_BLOCK | |
| 1413 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1414 thread->set_vm_result_2(callee_method()); |
| 0 | 1415 JRT_BLOCK_END |
| 1416 // return compiled code entry point after potential safepoints | |
| 1417 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1418 return callee_method->verified_code_entry(); | |
| 1419 JRT_END | |
| 1420 | |
| 1421 | |
| 1422 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1423 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1424 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1425 methodHandle callee_method; | |
| 1426 JRT_BLOCK | |
| 1427 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1428 thread->set_vm_result_2(callee_method()); |
| 0 | 1429 JRT_BLOCK_END |
| 1430 // return compiled code entry point after potential safepoints | |
| 1431 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1432 return callee_method->verified_code_entry(); | |
| 1433 JRT_END | |
| 1434 | |
| 1435 | |
| 1436 | |
| 1437 | |
| 1438 | |
| 1439 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1440 ResourceMark rm(thread); | |
| 1441 CallInfo call_info; | |
| 1442 Bytecodes::Code bc; | |
| 1443 | |
| 1444 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1445 // receivers for non-static calls | |
| 1446 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1447 CHECK_(methodHandle())); | |
| 1448 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1449 // If we fell thru to below we would think that the site was going megamorphic | |
| 1450 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1451 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1452 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1453 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1454 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1455 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1456 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1457 // | |
| 1458 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1459 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1460 if (TraceCallFixup) { | |
| 1461 RegisterMap reg_map(thread, false); | |
| 1462 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1463 ResourceMark rm(thread); | |
| 1464 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1465 callee_method->print_short_name(tty); | |
| 1466 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1467 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1468 } | |
| 1469 return callee_method; | |
| 1470 } | |
| 1471 | |
| 1472 methodHandle callee_method = call_info.selected_method(); | |
| 1473 | |
| 1474 bool should_be_mono = false; | |
| 1475 | |
| 1476 #ifndef PRODUCT | |
| 1477 Atomic::inc(&_ic_miss_ctr); | |
| 1478 | |
| 1479 // Statistics & Tracing | |
| 1480 if (TraceCallFixup) { | |
| 1481 ResourceMark rm(thread); | |
| 1482 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1483 callee_method->print_short_name(tty); | |
| 1484 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1485 } | |
| 1486 | |
| 1487 if (ICMissHistogram) { | |
| 1488 MutexLocker m(VMStatistic_lock); | |
| 1489 RegisterMap reg_map(thread, false); | |
| 1490 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1491 // produce statistics under the lock | |
| 1492 trace_ic_miss(f.pc()); | |
| 1493 } | |
| 1494 #endif | |
| 1495 | |
| 1496 // install an event collector so that when a vtable stub is created the | |
| 1497 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1498 // event can't be posted when the stub is created as locks are held | |
| 1499 // - instead the event will be deferred until the event collector goes | |
| 1500 // out of scope. | |
| 1501 JvmtiDynamicCodeEventCollector event_collector; | |
| 1502 | |
| 1503 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1504 // made non-entrant or we are called from interpreted. | |
| 1505 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1506 RegisterMap reg_map(thread, false); | |
| 1507 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1508 CodeBlob* cb = caller_frame.cb(); | |
| 1509 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1510 // Not a non-entrant nmethod, so find inline_cache | |
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1511 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
| 0 | 1512 bool should_be_mono = false; |
| 1513 if (inline_cache->is_optimized()) { | |
| 1514 if (TraceCallFixup) { | |
| 1515 ResourceMark rm(thread); | |
| 1516 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1517 callee_method->print_short_name(tty); | |
| 1518 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1519 } | |
| 1520 should_be_mono = true; | |
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1521 } else if (inline_cache->is_icholder_call()) { |
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1522 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1523 if ( ic_oop != NULL) { |
| 0 | 1524 |
| 1525 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1526 // This isn't a real miss. We must have seen that compiled code | |
| 1527 // is now available and we want the call site converted to a | |
| 1528 // monomorphic compiled call site. | |
| 1529 // We can't assert for callee_method->code() != NULL because it | |
| 1530 // could have been deoptimized in the meantime | |
| 1531 if (TraceCallFixup) { | |
| 1532 ResourceMark rm(thread); | |
| 1533 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1534 callee_method->print_short_name(tty); | |
| 1535 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1536 } | |
| 1537 should_be_mono = true; | |
| 1538 } | |
| 1539 } | |
| 1540 } | |
| 1541 | |
| 1542 if (should_be_mono) { | |
| 1543 | |
| 1544 // We have a path that was monomorphic but was going interpreted | |
| 1545 // and now we have (or had) a compiled entry. We correct the IC | |
| 1546 // by using a new icBuffer. | |
| 1547 CompiledICInfo info; | |
| 1548 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1549 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1550 receiver_klass, | |
| 1551 inline_cache->is_optimized(), | |
| 1552 false, | |
| 1553 info, CHECK_(methodHandle())); | |
| 1554 inline_cache->set_to_monomorphic(info); | |
| 1555 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 1556 // Change to megamorphic | |
| 1557 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1558 } else { | |
| 1559 // Either clean or megamorphic | |
| 1560 } | |
| 1561 } | |
| 1562 } // Release CompiledIC_lock | |
| 1563 | |
| 1564 return callee_method; | |
| 1565 } | |
| 1566 | |
| 1567 // | |
| 1568 // Resets a call-site in compiled code so it will get resolved again. | |
| 1569 // This routines handles both virtual call sites, optimized virtual call | |
| 1570 // sites, and static call sites. Typically used to change a call sites | |
| 1571 // destination from compiled to interpreted. | |
| 1572 // | |
| 1573 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1574 ResourceMark rm(thread); | |
| 1575 RegisterMap reg_map(thread, false); | |
| 1576 frame stub_frame = thread->last_frame(); | |
| 1577 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1578 frame caller = stub_frame.sender(®_map); | |
| 1579 | |
| 1580 // Do nothing if the frame isn't a live compiled frame. | |
| 1581 // nmethod could be deoptimized by the time we get here | |
| 1582 // so no update to the caller is needed. | |
| 1583 | |
| 1584 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1585 | |
| 1586 address pc = caller.pc(); | |
| 1587 | |
| 1588 // Default call_addr is the location of the "basic" call. | |
| 1589 // Determine the address of the call we a reresolving. With | |
| 1590 // Inline Caches we will always find a recognizable call. | |
| 1591 // With Inline Caches disabled we may or may not find a | |
| 1592 // recognizable call. We will always find a call for static | |
| 1593 // calls and for optimized virtual calls. For vanilla virtual | |
| 1594 // calls it depends on the state of the UseInlineCaches switch. | |
| 1595 // | |
| 1596 // With Inline Caches disabled we can get here for a virtual call | |
| 1597 // for two reasons: | |
| 1598 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1599 // will run us thru handle_wrong_method and we will eventually | |
| 1600 // end up in the interpreter to throw the ame. | |
| 1601 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1602 // call and between the time we fetch the entry address and | |
| 1603 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1604 // we will wind up in the interprter (thru a c2i with c2). | |
| 1605 // | |
| 1606 address call_addr = NULL; | |
| 1607 { | |
| 1608 // Get call instruction under lock because another thread may be | |
| 1609 // busy patching it. | |
| 1610 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1611 // Location of call instruction | |
| 1612 if (NativeCall::is_call_before(pc)) { | |
| 1613 NativeCall *ncall = nativeCall_before(pc); | |
| 1614 call_addr = ncall->instruction_address(); | |
| 1615 } | |
| 1616 } | |
| 1617 | |
| 1618 // Check for static or virtual call | |
| 1619 bool is_static_call = false; | |
| 1620 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1621 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1622 // this is done with it. | |
| 1623 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1624 nmethodLocker nmlock(caller_nm); | |
| 1625 | |
| 1626 if (call_addr != NULL) { | |
| 1627 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1628 int ret = iter.next(); // Get item | |
| 1629 if (ret) { | |
| 1630 assert(iter.addr() == call_addr, "must find call"); | |
| 1631 if (iter.type() == relocInfo::static_call_type) { | |
| 1632 is_static_call = true; | |
| 1633 } else { | |
| 1634 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1635 iter.type() == relocInfo::opt_virtual_call_type | |
| 1636 , "unexpected relocInfo. type"); | |
| 1637 } | |
| 1638 } else { | |
| 1639 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1640 } | |
| 1641 | |
| 1642 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1643 // than directly setting it to the new destination, since resolving of calls | |
| 1644 // is always done through the same code path. (experience shows that it | |
| 1645 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1646 // to a wrong method). It should not be performance critical, since the | |
| 1647 // resolve is only done once. | |
| 1648 | |
| 1649 MutexLocker ml(CompiledIC_lock); | |
| 1650 // | |
| 1651 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1652 // as it is a waste of time | |
| 1653 // | |
| 1654 if (caller_nm->is_in_use()) { | |
| 1655 if (is_static_call) { | |
| 1656 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1657 ssc->set_to_clean(); | |
| 1658 } else { | |
| 1659 // compiled, dispatched call (which used to call an interpreted method) | |
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1660 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
| 0 | 1661 inline_cache->set_to_clean(); |
| 1662 } | |
| 1663 } | |
| 1664 } | |
| 1665 | |
| 1666 } | |
| 1667 | |
| 1668 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1669 | |
| 1670 | |
| 1671 #ifndef PRODUCT | |
| 1672 Atomic::inc(&_wrong_method_ctr); | |
| 1673 | |
| 1674 if (TraceCallFixup) { | |
| 1675 ResourceMark rm(thread); | |
| 1676 tty->print("handle_wrong_method reresolving call to"); | |
| 1677 callee_method->print_short_name(tty); | |
| 1678 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1679 } | |
| 1680 #endif | |
| 1681 | |
| 1682 return callee_method; | |
| 1683 } | |
| 1684 | |
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1685 #ifdef ASSERT |
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1686 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1687 const BasicType* sig_bt, |
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1688 const VMRegPair* regs) { |
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1689 ResourceMark rm; |
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1690 const int total_args_passed = method->size_of_parameters(); |
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1691 const VMRegPair* regs_with_member_name = regs; |
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1692 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1693 |
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1694 const int member_arg_pos = total_args_passed - 1; |
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1695 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1696 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1697 |
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1698 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1699 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1700 |
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1701 for (int i = 0; i < member_arg_pos; i++) { |
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1702 VMReg a = regs_with_member_name[i].first(); |
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1703 VMReg b = regs_without_member_name[i].first(); |
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1704 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1705 } |
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1706 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1707 } |
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1708 #endif |
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1709 |
| 0 | 1710 // --------------------------------------------------------------------------- |
| 1711 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1712 // we were called by a compiled method. However we could have lost a race | |
| 1713 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1714 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1715 // so he no longer calls into the interpreter. |
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1716 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1717 Method* moop(method); |
| 0 | 1718 |
| 1719 address entry_point = moop->from_compiled_entry(); | |
| 1720 | |
| 1721 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1722 // been resolved yet, in which case this function will be called from | |
| 1723 // an nmethod that has been patched for deopt and we can ignore the | |
| 1724 // request for a fixup. | |
| 1725 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1726 // is now back to the i2c in that case we don't need to patch and if | |
| 1727 // we did we'd leap into space because the callsite needs to use | |
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1728 // "to interpreter" stub in order to load up the Method*. Don't |
| 0 | 1729 // ask me how I know this... |
| 1730 | |
| 1731 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1732 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1733 return; | |
| 1734 } | |
| 1735 | |
| 1736 // The check above makes sure this is a nmethod. | |
| 1737 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1738 assert(nm, "must be"); | |
| 1739 | |
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1740 // Get the return PC for the passed caller PC. |
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1741 address return_pc = caller_pc + frame::pc_return_offset; |
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1742 |
| 0 | 1743 // There is a benign race here. We could be attempting to patch to a compiled |
| 1744 // entry point at the same time the callee is being deoptimized. If that is | |
| 1745 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1746 // call site with the same old data. clear_code will set code() to NULL | |
| 1747 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1748 // to patch. If we hit the window where the callee has a c2i in the | |
| 1749 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1750 // and patch the code with the same old data. Asi es la vida. | |
| 1751 | |
| 1752 if (moop->code() == NULL) return; | |
| 1753 | |
| 1205 | 1754 if (nm->is_in_use()) { |
| 0 | 1755 |
| 1756 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1757 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1758 if (NativeCall::is_call_before(return_pc)) { |
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1759 NativeCall *call = nativeCall_before(return_pc); |
| 0 | 1760 // |
| 1761 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1762 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1763 // see compiled code and attempt to patch the site by calling us. This would | |
| 1764 // then incorrectly convert the call site to optimized and its downhill from | |
| 1765 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1766 // just made a call site that could be megamorphic into a monomorphic site | |
| 1767 // for the rest of its life! Just another racing bug in the life of | |
| 1768 // fixup_callers_callsite ... | |
| 1769 // | |
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1770 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1771 iter.next(); |
| 1772 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1773 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1774 if ( typ != relocInfo::static_call_type && | |
| 1775 typ != relocInfo::opt_virtual_call_type && | |
| 1776 typ != relocInfo::static_stub_type) { | |
| 1777 return; | |
| 1778 } | |
| 1779 address destination = call->destination(); | |
| 1780 if (destination != entry_point) { | |
| 1781 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1782 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1783 if (callee == cb || callee->is_adapter_blob()) { | |
| 1784 // static call or optimized virtual | |
| 1785 if (TraceCallFixup) { | |
| 1204 | 1786 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1787 moop->print_short_name(tty); |
| 1788 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1789 } | |
| 1790 call->set_destination_mt_safe(entry_point); | |
| 1791 } else { | |
| 1792 if (TraceCallFixup) { | |
| 1793 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1794 moop->print_short_name(tty); | |
| 1795 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1796 } | |
| 1797 // assert is too strong could also be resolve destinations. | |
| 1798 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1799 } | |
| 1800 } else { | |
| 1801 if (TraceCallFixup) { | |
| 1204 | 1802 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1803 moop->print_short_name(tty); |
| 1804 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1805 } | |
| 1806 } | |
| 1807 } | |
| 1808 } | |
| 1809 IRT_END | |
| 1810 | |
| 1811 | |
| 1812 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1813 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1814 oopDesc* dest, jint dest_pos, | |
| 1815 jint length, | |
| 1816 JavaThread* thread)) { | |
| 1817 #ifndef PRODUCT | |
| 1818 _slow_array_copy_ctr++; | |
| 1819 #endif | |
| 1820 // Check if we have null pointers | |
| 1821 if (src == NULL || dest == NULL) { | |
| 1822 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1823 } | |
| 1824 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1825 // even though the copy_array API also performs dynamic checks to ensure | |
| 1826 // that src and dest are truly arrays (and are conformable). | |
| 1827 // The copy_array mechanism is awkward and could be removed, but | |
| 1828 // the compilers don't call this function except as a last resort, | |
| 1829 // so it probably doesn't matter. | |
| 6983 | 1830 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
| 0 | 1831 (arrayOopDesc*)dest, dest_pos, |
| 1832 length, thread); | |
| 1833 } | |
| 1834 JRT_END | |
| 1835 | |
| 1836 char* SharedRuntime::generate_class_cast_message( | |
| 1837 JavaThread* thread, const char* objName) { | |
| 1838 | |
| 1839 // Get target class name from the checkcast instruction | |
| 1840 vframeStream vfst(thread, true); | |
| 1841 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1842 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 6983 | 1843 Klass* targetKlass = vfst.method()->constants()->klass_at( |
| 1844 cc.index(), thread); | |
| 0 | 1845 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1846 } | |
| 1847 | |
| 1848 char* SharedRuntime::generate_class_cast_message( | |
| 710 | 1849 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1850 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1851 | |
| 53 | 1852 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1853 if (NULL == message) { |
| 53 | 1854 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1855 message = const_cast<char*>(objName); |
| 1856 } else { | |
| 1857 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1858 } | |
| 1859 return message; | |
| 1860 } | |
| 1861 | |
| 1862 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1863 (void) JavaThread::current()->reguard_stack(); | |
| 1864 JRT_END | |
| 1865 | |
| 1866 | |
| 1867 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1868 #ifndef PRODUCT | |
| 1869 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1870 #endif | |
| 1871 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1872 oop obj(_obj); | |
| 1873 #ifndef PRODUCT | |
| 1874 _monitor_enter_ctr++; // monitor enter slow | |
| 1875 #endif | |
| 1876 if (PrintBiasedLockingStatistics) { | |
| 1877 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1878 } | |
| 1879 Handle h_obj(THREAD, obj); | |
| 1880 if (UseBiasedLocking) { | |
| 1881 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1882 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1883 } else { | |
| 1884 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1885 } | |
| 1886 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1887 JRT_END | |
| 1888 | |
| 1889 #ifndef PRODUCT | |
| 1890 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1891 #endif | |
| 1892 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1893 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1894 oop obj(_obj); | |
| 1895 #ifndef PRODUCT | |
| 1896 _monitor_exit_ctr++; // monitor exit slow | |
| 1897 #endif | |
| 1898 Thread* THREAD = JavaThread::current(); | |
| 1899 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1900 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1901 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1902 #undef MIGHT_HAVE_PENDING | |
| 1903 #ifdef MIGHT_HAVE_PENDING | |
| 1904 // Save and restore any pending_exception around the exception mark. | |
| 1905 // While the slow_exit must not throw an exception, we could come into | |
| 1906 // this routine with one set. | |
| 1907 oop pending_excep = NULL; | |
| 1908 const char* pending_file; | |
| 1909 int pending_line; | |
| 1910 if (HAS_PENDING_EXCEPTION) { | |
| 1911 pending_excep = PENDING_EXCEPTION; | |
| 1912 pending_file = THREAD->exception_file(); | |
| 1913 pending_line = THREAD->exception_line(); | |
| 1914 CLEAR_PENDING_EXCEPTION; | |
| 1915 } | |
| 1916 #endif /* MIGHT_HAVE_PENDING */ | |
| 1917 | |
| 1918 { | |
| 1919 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1920 EXCEPTION_MARK; | |
| 1921 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1922 } | |
| 1923 | |
| 1924 #ifdef MIGHT_HAVE_PENDING | |
| 1925 if (pending_excep != NULL) { | |
| 1926 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1927 } | |
| 1928 #endif /* MIGHT_HAVE_PENDING */ | |
| 1929 JRT_END | |
| 1930 | |
| 1931 #ifndef PRODUCT | |
| 1932 | |
| 1933 void SharedRuntime::print_statistics() { | |
| 1934 ttyLocker ttyl; | |
| 1935 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1936 | |
| 1937 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1938 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1939 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1940 | |
| 1941 SharedRuntime::print_ic_miss_histogram(); | |
| 1942 | |
| 1943 if (CountRemovableExceptions) { | |
| 1944 if (_nof_removable_exceptions > 0) { | |
| 1945 Unimplemented(); // this counter is not yet incremented | |
| 1946 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1947 } | |
| 1948 } | |
| 1949 | |
| 1950 // Dump the JRT_ENTRY counters | |
| 1951 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 1952 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 1953 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 1954 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 1955 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 1956 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 1957 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 1958 | |
| 1959 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 1960 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 1961 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 1962 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 1963 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 1964 | |
| 1965 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 1966 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 1967 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 1968 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 1969 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 1970 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 1971 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 1972 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 1973 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 1974 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 1975 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 1976 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 1977 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 1978 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 1979 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 1980 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 1981 | |
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1982 AdapterHandlerLibrary::print_statistics(); |
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1983 |
| 0 | 1984 if (xtty != NULL) xtty->tail("statistics"); |
| 1985 } | |
| 1986 | |
| 1987 inline double percent(int x, int y) { | |
| 1988 return 100.0 * x / MAX2(y, 1); | |
| 1989 } | |
| 1990 | |
| 1991 class MethodArityHistogram { | |
| 1992 public: | |
| 1993 enum { MAX_ARITY = 256 }; | |
| 1994 private: | |
| 1995 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 1996 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 1997 static int _max_arity; // max. arity seen | |
| 1998 static int _max_size; // max. arg size seen | |
| 1999 | |
| 2000 static void add_method_to_histogram(nmethod* nm) { | |
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2001 Method* m = nm->method(); |
| 0 | 2002 ArgumentCount args(m->signature()); |
| 2003 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 2004 int argsize = m->size_of_parameters(); | |
| 2005 arity = MIN2(arity, MAX_ARITY-1); | |
| 2006 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 2007 int count = nm->method()->compiled_invocation_count(); | |
| 2008 _arity_histogram[arity] += count; | |
| 2009 _size_histogram[argsize] += count; | |
| 2010 _max_arity = MAX2(_max_arity, arity); | |
| 2011 _max_size = MAX2(_max_size, argsize); | |
| 2012 } | |
| 2013 | |
| 2014 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 2015 const int N = MIN2(5, n); | |
| 2016 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2017 double sum = 0; | |
| 2018 double weighted_sum = 0; | |
| 2019 int i; | |
| 2020 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 2021 double rest = sum; | |
| 2022 double percent = sum / 100; | |
| 2023 for (i = 0; i <= N; i++) { | |
| 2024 rest -= histo[i]; | |
| 2025 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 2026 } | |
| 2027 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 2028 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 2029 } | |
| 2030 | |
| 2031 void print_histogram() { | |
| 2032 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 2033 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 2034 tty->print_cr("\nSame for parameter size (in words):"); | |
| 2035 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 2036 tty->cr(); | |
| 2037 } | |
| 2038 | |
| 2039 public: | |
| 2040 MethodArityHistogram() { | |
| 2041 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 2042 _max_arity = _max_size = 0; | |
| 2043 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 2044 CodeCache::nmethods_do(add_method_to_histogram); | |
| 2045 print_histogram(); | |
| 2046 } | |
| 2047 }; | |
| 2048 | |
| 2049 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2050 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 2051 int MethodArityHistogram::_max_arity; | |
| 2052 int MethodArityHistogram::_max_size; | |
| 2053 | |
| 2054 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 2055 tty->print_cr("Calls from compiled code:"); | |
| 2056 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 2057 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 2058 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 2059 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 2060 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 2061 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 2062 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 2063 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 2064 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 2065 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 2066 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 2067 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 2068 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 2069 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 2070 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 2071 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 2072 tty->cr(); | |
| 2073 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 2074 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 2075 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 2076 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 2077 tty->cr(); | |
| 2078 | |
| 2079 MethodArityHistogram h; | |
| 2080 } | |
| 2081 #endif | |
| 2082 | |
| 2083 | |
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2084 // A simple wrapper class around the calling convention information |
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2085 // that allows sharing of adapters for the same calling convention. |
| 6197 | 2086 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2087 private: |
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2088 enum { |
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2089 _basic_type_bits = 4, |
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2090 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2091 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2092 _compact_int_count = 3 |
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2093 }; |
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2094 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2095 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2096 |
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2097 union { |
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2098 int _compact[_compact_int_count]; |
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2099 int* _fingerprint; |
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2100 } _value; |
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2101 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2102 // Otherwise _value._fingerprint is the array. |
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2103 |
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2104 // Remap BasicTypes that are handled equivalently by the adapters. |
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2105 // These are correct for the current system but someday it might be |
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2106 // necessary to make this mapping platform dependent. |
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2107 static int adapter_encoding(BasicType in) { |
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2108 switch(in) { |
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2109 case T_BOOLEAN: |
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|
2110 case T_BYTE: |
|
74c848d437ab
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diff
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|
2111 case T_SHORT: |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2112 case T_CHAR: |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2113 // There are all promoted to T_INT in the calling convention |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2114 return T_INT; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2115 |
|
1207
74c848d437ab
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diff
changeset
|
2116 case T_OBJECT: |
|
74c848d437ab
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diff
changeset
|
2117 case T_ARRAY: |
|
6266
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|
2118 // In other words, we assume that any register good enough for |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
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|
2119 // an int or long is good enough for a managed pointer. |
|
1207
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|
2120 #ifdef _LP64 |
| 1506 | 2121 return T_LONG; |
|
1207
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|
2122 #else |
| 1506 | 2123 return T_INT; |
|
1207
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|
2124 #endif |
|
74c848d437ab
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changeset
|
2125 |
|
74c848d437ab
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parents:
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diff
changeset
|
2126 case T_INT: |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2127 case T_LONG: |
|
74c848d437ab
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diff
changeset
|
2128 case T_FLOAT: |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2129 case T_DOUBLE: |
|
74c848d437ab
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parents:
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diff
changeset
|
2130 case T_VOID: |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2131 return in; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2132 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2133 default: |
|
74c848d437ab
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parents:
1205
diff
changeset
|
2134 ShouldNotReachHere(); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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changeset
|
2135 return T_CONFLICT; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2136 } |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2137 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2138 |
|
1207
74c848d437ab
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diff
changeset
|
2139 public: |
|
74c848d437ab
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parents:
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changeset
|
2140 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
|
74c848d437ab
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parents:
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|
2141 // The fingerprint is based on the BasicType signature encoded |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
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parents:
3451
diff
changeset
|
2142 // into an array of ints with eight entries per int. |
|
1207
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|
2143 int* ptr; |
|
6266
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|
2144 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2145 if (len <= _compact_int_count) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2146 assert(_compact_int_count == 3, "else change next line"); |
|
1207
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|
2147 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
|
74c848d437ab
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|
2148 // Storing the signature encoded as signed chars hits about 98% |
|
74c848d437ab
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diff
changeset
|
2149 // of the time. |
|
74c848d437ab
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parents:
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diff
changeset
|
2150 _length = -len; |
|
74c848d437ab
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parents:
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diff
changeset
|
2151 ptr = _value._compact; |
|
74c848d437ab
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parents:
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diff
changeset
|
2152 } else { |
|
74c848d437ab
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parents:
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diff
changeset
|
2153 _length = len; |
| 6197 | 2154 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2155 ptr = _value._fingerprint; |
|
74c848d437ab
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never
parents:
1205
diff
changeset
|
2156 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2157 |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
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3451
diff
changeset
|
2158 // Now pack the BasicTypes with 8 per int |
|
1207
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diff
changeset
|
2159 int sig_index = 0; |
|
74c848d437ab
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parents:
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diff
changeset
|
2160 for (int index = 0; index < len; index++) { |
|
74c848d437ab
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parents:
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changeset
|
2161 int value = 0; |
|
6266
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twisti
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6197
diff
changeset
|
2162 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2163 int bt = ((sig_index < total_args_passed) |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2164 ? adapter_encoding(sig_bt[sig_index++]) |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2165 : 0); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2166 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2167 value = (value << _basic_type_bits) | bt; |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2168 } |
|
74c848d437ab
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never
parents:
1205
diff
changeset
|
2169 ptr[index] = value; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2170 } |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2171 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2172 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2173 ~AdapterFingerPrint() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2174 if (_length > 0) { |
| 6197 | 2175 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
|
1187
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 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2178 |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2179 int value(int index) { |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2180 if (_length < 0) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2181 return _value._compact[index]; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2182 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2183 return _value._fingerprint[index]; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2184 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2185 int length() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2186 if (_length < 0) return -_length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2187 return _length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2188 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2189 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2190 bool is_compact() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2191 return _length <= 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2192 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2193 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2194 unsigned int compute_hash() { |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2195 int hash = 0; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2196 for (int i = 0; i < length(); i++) { |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2197 int v = value(i); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2198 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
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 return (unsigned int)hash; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2201 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2202 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2203 const char* as_string() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2204 stringStream st; |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2205 st.print("0x"); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2206 for (int i = 0; i < length(); i++) { |
|
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2207 st.print("%08x", value(i)); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2208 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2209 return st.as_string(); |
|
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 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2212 bool equals(AdapterFingerPrint* other) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2213 if (other->_length != _length) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2214 return false; |
|
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 if (_length < 0) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2217 assert(_compact_int_count == 3, "else change next line"); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2218 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2219 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2220 _value._compact[2] == other->_value._compact[2]; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2221 } else { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2222 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
|
2223 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
|
2224 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2225 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2226 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2227 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2228 return true; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2229 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2230 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2231 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2232 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2233 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
| 6197 | 2234 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2235 friend class AdapterHandlerTableIterator; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2236 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2237 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2238 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2239 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2240 static int _lookups; // number of calls to lookup |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2241 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
|
2242 static int _equals; // number of buckets checked with matching hash |
|
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|
2243 static int _hits; // number of successful lookups |
|
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|
2244 static int _compact; // number of equals calls with compact signature |
|
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|
2245 #endif |
|
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|
2246 |
|
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|
2247 AdapterHandlerEntry* bucket(int i) { |
| 6197 | 2248 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
|
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|
2249 } |
|
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|
2250 |
|
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|
2251 public: |
|
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|
2252 AdapterHandlerTable() |
| 6197 | 2253 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
|
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|
2254 |
|
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|
2255 // Create a new entry suitable for insertion in the table |
|
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|
2256 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
| 6197 | 2257 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
|
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|
2258 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2259 return entry; |
|
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|
2260 } |
|
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|
2261 |
|
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|
2262 // Insert an entry into the table |
|
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|
2263 void add(AdapterHandlerEntry* entry) { |
|
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|
2264 int index = hash_to_index(entry->hash()); |
|
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|
2265 add_entry(index, entry); |
|
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|
2266 } |
|
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|
2267 |
|
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|
2268 void free_entry(AdapterHandlerEntry* entry) { |
|
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|
2269 entry->deallocate(); |
| 6197 | 2270 BasicHashtable<mtCode>::free_entry(entry); |
|
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|
2271 } |
|
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|
2272 |
|
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|
2273 // Find a entry with the same fingerprint if it exists |
|
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|
2274 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
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2275 NOT_PRODUCT(_lookups++); |
|
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|
2276 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
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|
2277 unsigned int hash = fp.compute_hash(); |
|
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|
2278 int index = hash_to_index(hash); |
|
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2279 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
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|
2280 NOT_PRODUCT(_buckets++); |
|
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|
2281 if (e->hash() == hash) { |
|
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|
2282 NOT_PRODUCT(_equals++); |
|
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2283 if (fp.equals(e->fingerprint())) { |
|
1263
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|
2284 #ifndef PRODUCT |
|
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|
2285 if (fp.is_compact()) _compact++; |
|
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|
2286 _hits++; |
|
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|
2287 #endif |
|
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|
2288 return e; |
|
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|
2289 } |
|
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|
2290 } |
|
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|
2291 } |
|
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|
2292 return NULL; |
|
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|
2293 } |
|
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|
2294 |
|
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|
2295 #ifndef PRODUCT |
|
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|
2296 void print_statistics() { |
|
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|
2297 ResourceMark rm; |
|
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|
2298 int longest = 0; |
|
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|
2299 int empty = 0; |
|
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|
2300 int total = 0; |
|
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|
2301 int nonempty = 0; |
|
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|
2302 for (int index = 0; index < table_size(); index++) { |
|
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|
2303 int count = 0; |
|
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|
2304 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
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|
2305 count++; |
|
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|
2306 } |
|
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|
2307 if (count != 0) nonempty++; |
|
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|
2308 if (count == 0) empty++; |
|
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|
2309 if (count > longest) longest = count; |
|
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|
2310 total += count; |
|
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|
2311 } |
|
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|
2312 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2313 empty, longest, total, total / (double)nonempty); |
|
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|
2314 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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|
2315 _lookups, _buckets, _equals, _hits, _compact); |
|
1263
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|
2316 } |
|
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|
2317 #endif |
|
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|
2318 }; |
|
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|
2319 |
|
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|
2320 |
|
1263
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|
2321 #ifndef PRODUCT |
|
1187
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|
2322 |
|
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|
2323 int AdapterHandlerTable::_lookups; |
|
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|
2324 int AdapterHandlerTable::_buckets; |
|
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|
2325 int AdapterHandlerTable::_equals; |
|
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|
2326 int AdapterHandlerTable::_hits; |
|
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|
2327 int AdapterHandlerTable::_compact; |
|
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|
2328 |
|
1681
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6953477: Increase portability and flexibility of building Hotspot
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diff
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|
2329 #endif |
|
126ea7725993
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diff
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|
2330 |
|
1187
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|
2331 class AdapterHandlerTableIterator : public StackObj { |
|
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|
2332 private: |
|
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|
2333 AdapterHandlerTable* _table; |
|
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|
2334 int _index; |
|
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|
2335 AdapterHandlerEntry* _current; |
|
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|
2336 |
|
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diff
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|
2337 void scan() { |
|
cf0685d550f1
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diff
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|
2338 while (_index < _table->table_size()) { |
|
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|
2339 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2340 _index++; |
|
1187
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|
2341 if (a != NULL) { |
|
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diff
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|
2342 _current = a; |
|
cf0685d550f1
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|
2343 return; |
|
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|
2344 } |
|
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|
2345 } |
|
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|
2346 } |
|
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|
2347 |
|
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|
2348 public: |
|
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|
2349 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
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|
2350 scan(); |
|
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|
2351 } |
|
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|
2352 bool has_next() { |
|
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|
2353 return _current != NULL; |
|
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|
2354 } |
|
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|
2355 AdapterHandlerEntry* next() { |
|
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|
2356 if (_current != NULL) { |
|
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|
2357 AdapterHandlerEntry* result = _current; |
|
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|
2358 _current = _current->next(); |
|
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|
2359 if (_current == NULL) scan(); |
|
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never
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|
2360 return result; |
|
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|
2361 } else { |
|
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|
2362 return NULL; |
|
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never
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diff
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|
2363 } |
|
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|
2364 } |
|
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|
2365 }; |
|
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|
2366 |
|
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|
2367 |
| 0 | 2368 // --------------------------------------------------------------------------- |
| 2369 // Implementation of AdapterHandlerLibrary | |
|
1187
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|
2370 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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|
2371 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2372 const int AdapterHandlerLibrary_size = 16*K; |
|
742
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|
2373 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
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|
2374 |
|
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|
2375 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
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2376 // Should be called only when AdapterHandlerLibrary_lock is active. |
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2377 if (_buffer == NULL) // Initialize lazily |
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2378 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2379 return _buffer; |
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2380 } |
| 0 | 2381 |
| 2382 void AdapterHandlerLibrary::initialize() { | |
|
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2383 if (_adapters != NULL) return; |
|
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2384 _adapters = new AdapterHandlerTable(); |
| 0 | 2385 |
| 2386 // Create a special handler for abstract methods. Abstract methods | |
| 2387 // are never compiled so an i2c entry is somewhat meaningless, but | |
| 2388 // fill it in with something appropriate just in case. Pass handle | |
| 2389 // wrong method for the c2i transitions. | |
| 2390 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
|
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2391 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
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|
2392 StubRoutines::throw_AbstractMethodError_entry(), |
|
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|
2393 wrong_method, wrong_method); |
| 0 | 2394 } |
| 2395 | |
|
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2396 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
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|
2397 address i2c_entry, |
|
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|
2398 address c2i_entry, |
|
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|
2399 address c2i_unverified_entry) { |
|
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2400 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2401 } |
|
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|
2402 |
|
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|
2403 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
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2404 // Use customized signature handler. Need to lock around updates to |
|
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|
2405 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
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2406 // and a single writer: this could be fixed if it becomes a |
|
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|
2407 // problem). |
| 0 | 2408 |
| 2409 // Get the address of the ic_miss handlers before we grab the | |
| 2410 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2411 // was caused by the initialization of the stubs happening | |
| 2412 // while we held the lock and then notifying jvmti while | |
| 2413 // holding it. This just forces the initialization to be a little | |
| 2414 // earlier. | |
| 2415 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2416 assert(ic_miss != NULL, "must have handler"); | |
| 2417 | |
|
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|
2418 ResourceMark rm; |
|
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2419 |
| 1748 | 2420 NOT_PRODUCT(int insts_size); |
|
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2421 AdapterBlob* B = NULL; |
|
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2422 AdapterHandlerEntry* entry = NULL; |
|
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|
2423 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2424 { |
| 2425 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2426 // make sure data structure is initialized | |
| 2427 initialize(); | |
| 2428 | |
| 2429 if (method->is_abstract()) { | |
|
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|
2430 return _abstract_method_handler; |
| 0 | 2431 } |
| 2432 | |
|
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|
2433 // Fill in the signature array, for the calling-convention call. |
|
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|
2434 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
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2435 |
|
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|
2436 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
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2437 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
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|
2438 int i = 0; |
|
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|
2439 if (!method->is_static()) // Pass in receiver first |
|
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|
2440 sig_bt[i++] = T_OBJECT; |
|
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|
2441 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
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|
2442 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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|
2443 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
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|
2444 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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|
2445 } |
|
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|
2446 assert(i == total_args_passed, ""); |
|
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|
2447 |
|
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|
2448 // Lookup method signature's fingerprint |
|
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|
2449 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
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|
2450 |
|
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|
2451 #ifdef ASSERT |
|
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|
2452 AdapterHandlerEntry* shared_entry = NULL; |
|
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|
2453 if (VerifyAdapterSharing && entry != NULL) { |
|
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|
2454 shared_entry = entry; |
|
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|
2455 entry = NULL; |
|
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|
2456 } |
|
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|
2457 #endif |
|
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|
2458 |
|
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|
2459 if (entry != NULL) { |
|
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|
2460 return entry; |
| 0 | 2461 } |
| 2462 | |
|
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|
2463 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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|
2464 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
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|
2465 |
|
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|
2466 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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|
2467 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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|
2468 |
| 0 | 2469 // Create I2C & C2I handlers |
| 2470 | |
|
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2471 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2472 if (buf != NULL) { |
| 1748 | 2473 CodeBuffer buffer(buf); |
|
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|
2474 short buffer_locs[20]; |
|
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|
2475 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
|
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|
2476 sizeof(buffer_locs)/sizeof(relocInfo)); |
|
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|
2477 MacroAssembler _masm(&buffer); |
|
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|
2478 |
|
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|
2479 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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|
2480 total_args_passed, |
|
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|
2481 comp_args_on_stack, |
|
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|
2482 sig_bt, |
|
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|
2483 regs, |
|
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|
2484 fingerprint); |
| 0 | 2485 |
|
1207
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|
2486 #ifdef ASSERT |
|
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|
2487 if (VerifyAdapterSharing) { |
|
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|
2488 if (shared_entry != NULL) { |
| 1748 | 2489 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
|
1207
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|
2490 "code must match"); |
|
74c848d437ab
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|
2491 // Release the one just created and return the original |
|
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|
2492 _adapters->free_entry(entry); |
|
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|
2493 return shared_entry; |
|
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|
2494 } else { |
| 1748 | 2495 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
|
1207
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|
2496 } |
|
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|
2497 } |
|
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|
2498 #endif |
|
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|
2499 |
|
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|
2500 B = AdapterBlob::create(&buffer); |
| 1748 | 2501 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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|
2502 } |
| 28 | 2503 if (B == NULL) { |
| 2504 // CodeCache is full, disable compilation | |
| 2505 // Ought to log this but compile log is only per compile thread | |
| 2506 // and we're some non descript Java thread. | |
| 1202 | 2507 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2508 CompileBroker::handle_full_code_cache(); | |
|
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|
2509 return NULL; // Out of CodeCache space |
| 28 | 2510 } |
| 1748 | 2511 entry->relocate(B->content_begin()); |
| 0 | 2512 #ifndef PRODUCT |
| 2513 // debugging suppport | |
|
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|
2514 if (PrintAdapterHandlers || PrintStubCode) { |
|
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|
2515 ttyLocker ttyl; |
|
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|
2516 entry->print_adapter_on(tty); |
|
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|
2517 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
|
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|
2518 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
|
6266
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|
2519 method->signature()->as_C_string(), insts_size); |
| 0 | 2520 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
|
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|
2521 if (Verbose || PrintStubCode) { |
|
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|
2522 address first_pc = entry->base_address(); |
|
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|
2523 if (first_pc != NULL) { |
|
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|
2524 Disassembler::decode(first_pc, first_pc + insts_size); |
|
6796
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|
2525 tty->cr(); |
|
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|
2526 } |
|
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|
2527 } |
| 0 | 2528 } |
| 2529 #endif | |
| 2530 | |
|
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|
2531 _adapters->add(entry); |
| 0 | 2532 } |
| 2533 // Outside of the lock | |
| 2534 if (B != NULL) { | |
| 2535 char blob_id[256]; | |
| 2536 jio_snprintf(blob_id, | |
| 2537 sizeof(blob_id), | |
|
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|
2538 "%s(%s)@" PTR_FORMAT, |
|
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|
2539 B->name(), |
|
1187
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changeset
|
2540 fingerprint->as_string(), |
| 1748 | 2541 B->content_begin()); |
| 2542 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
| 0 | 2543 |
| 2544 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 1748 | 2545 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
| 0 | 2546 } |
| 2547 } | |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2548 return entry; |
| 0 | 2549 } |
| 2550 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2551 address AdapterHandlerEntry::base_address() { |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2552 address base = _i2c_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2553 if (base == NULL) base = _c2i_entry; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2554 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2555 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2556 return base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2557 } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2558 |
| 0 | 2559 void AdapterHandlerEntry::relocate(address new_base) { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2560 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
|
2561 assert(old_base != NULL, ""); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents:
6197
diff
changeset
|
2562 ptrdiff_t delta = new_base - old_base; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2563 if (_i2c_entry != NULL) |
| 0 | 2564 _i2c_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2565 if (_c2i_entry != NULL) |
| 0 | 2566 _c2i_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2567 if (_c2i_unverified_entry != NULL) |
| 0 | 2568 _c2i_unverified_entry += delta; |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2569 assert(base_address() == new_base, ""); |
| 0 | 2570 } |
| 2571 | |
|
1207
74c848d437ab
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diff
changeset
|
2572 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2573 void AdapterHandlerEntry::deallocate() { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2574 delete _fingerprint; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2575 #ifdef ASSERT |
| 6197 | 2576 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
| 2577 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig, mtCode); | |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2578 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2579 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2580 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2581 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2582 #ifdef ASSERT |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2583 // Capture the code before relocation so that it can be compared |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2584 // against other versions. If the code is captured after relocation |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2585 // then relative instructions won't be equivalent. |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2586 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
| 6197 | 2587 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2588 _code_length = length; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2589 memcpy(_saved_code, buffer, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2590 _total_args_passed = total_args_passed; |
| 6197 | 2591 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed, mtCode); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2592 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2593 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2594 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2595 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2596 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
|
2597 if (length != _code_length) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2598 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2599 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2600 for (int i = 0; i < length; i++) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2601 if (buffer[i] != _saved_code[i]) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2602 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2603 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2604 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2605 return true; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2606 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2607 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2608 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2609 |
| 0 | 2610 // Create a native wrapper for this native method. The wrapper converts the |
| 2611 // java compiled calling convention to the native convention, handlizes | |
| 2612 // arguments, and transitions to native. On return from the native we transition | |
| 2613 // 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
|
2614 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
| 0 | 2615 ResourceMark rm; |
| 2616 nmethod* nm = NULL; | |
| 2617 | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2618 assert(method->is_native(), "must be native"); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2619 assert(method->is_method_handle_intrinsic() || |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2620 method->has_native_function(), "must have something valid to call!"); |
| 0 | 2621 |
| 2622 { | |
| 2623 // perform the work while holding the lock, but perform any printing outside the lock | |
| 2624 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2625 // See if somebody beat us to it | |
| 2626 nm = method->code(); | |
| 2627 if (nm) { | |
| 2628 return nm; | |
| 2629 } | |
| 2630 | |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2631 ResourceMark rm; |
| 0 | 2632 |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2633 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2634 if (buf != NULL) { |
| 1748 | 2635 CodeBuffer buffer(buf); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2636 double locs_buf[20]; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2637 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2638 MacroAssembler _masm(&buffer); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2639 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2640 // Fill in the signature array, for the calling-convention call. |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents:
6725
diff
changeset
|
2641 const int total_args_passed = method->size_of_parameters(); |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents:
6725
diff
changeset
|
2642 |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents:
6725
diff
changeset
|
2643 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents:
6725
diff
changeset
|
2644 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2645 int i=0; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2646 if( !method->is_static() ) // Pass in receiver first |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2647 sig_bt[i++] = T_OBJECT; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2648 SignatureStream ss(method->signature()); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2649 for( ; !ss.at_return_type(); ss.next()) { |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2650 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2651 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2652 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2653 } |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents:
6725
diff
changeset
|
2654 assert(i == total_args_passed, ""); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2655 BasicType ret_type = ss.type(); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2656 |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2657 // Now get the compiled-Java layout as input (or output) arguments. |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2658 // NOTE: Stubs for compiled entry points of method handle intrinsics |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2659 // are just trampolines so the argument registers must be outgoing ones. |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2660 const bool is_outgoing = method->is_method_handle_intrinsic(); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2661 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2662 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2663 // Generate the compiled-to-native wrapper code |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2664 nm = SharedRuntime::generate_native_wrapper(&_masm, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2665 method, |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2666 compile_id, |
|
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents:
6725
diff
changeset
|
2667 sig_bt, |
|
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
parents:
6725
diff
changeset
|
2668 regs, |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2669 ret_type); |
| 0 | 2670 } |
| 2671 } | |
| 2672 | |
| 2673 // Must unlock before calling set_code | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2674 |
| 0 | 2675 // Install the generated code. |
| 2676 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2677 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2678 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2679 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2680 } |
| 0 | 2681 method->set_code(method, nm); |
| 2682 nm->post_compiled_method_load_event(); | |
| 2683 } else { | |
| 2684 // CodeCache is full, disable compilation | |
| 1202 | 2685 CompileBroker::handle_full_code_cache(); |
| 0 | 2686 } |
| 2687 return nm; | |
| 2688 } | |
| 2689 | |
|
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2690 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2691 assert(thread == JavaThread::current(), "must be"); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2692 // The code is about to enter a JNI lazy critical native method and |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2693 // _needs_gc is true, so if this thread is already in a critical |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2694 // 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
|
2695 // until needs_gc has been cleared. |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2696 if (thread->in_critical()) { |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2697 return; |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2698 } |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2699 // Lock and unlock a critical section to give the system a chance to block |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2700 GC_locker::lock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2701 GC_locker::unlock_critical(thread); |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2702 JRT_END |
|
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
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2703 |
|
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2704 #ifdef HAVE_DTRACE_H |
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2705 // Create a dtrace nmethod for this method. The wrapper converts the |
|
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2706 // java compiled calling convention to the native convention, makes a dummy call |
|
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2707 // (actually nops for the size of the call instruction, which become a trap if |
|
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2708 // probe is enabled). The returns to the caller. Since this all looks like a |
|
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2709 // leaf no thread transition is needed. |
|
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2710 |
|
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2711 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
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2712 ResourceMark rm; |
|
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2713 nmethod* nm = NULL; |
|
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2714 |
|
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2715 if (PrintCompilation) { |
|
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2716 ttyLocker ttyl; |
|
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2717 tty->print("--- n%s "); |
|
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2718 method->print_short_name(tty); |
|
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2719 if (method->is_static()) { |
|
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2720 tty->print(" (static)"); |
|
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2721 } |
|
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2722 tty->cr(); |
|
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2723 } |
|
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2724 |
|
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2725 { |
|
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2726 // perform the work while holding the lock, but perform any printing |
|
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2727 // outside the lock |
|
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2728 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
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2729 // See if somebody beat us to it |
|
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2730 nm = method->code(); |
|
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2731 if (nm) { |
|
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2732 return nm; |
|
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2733 } |
|
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2734 |
|
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|
2735 ResourceMark rm; |
|
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|
2736 |
|
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2737 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2738 if (buf != NULL) { |
| 1748 | 2739 CodeBuffer buffer(buf); |
|
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2740 // Need a few relocation entries |
|
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|
2741 double locs_buf[20]; |
|
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2742 buffer.insts()->initialize_shared_locs( |
|
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2743 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
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2744 MacroAssembler _masm(&buffer); |
|
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2745 |
|
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2746 // Generate the compiled-to-native wrapper code |
|
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2747 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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2748 } |
|
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2749 } |
|
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|
2750 return nm; |
|
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2751 } |
|
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2752 |
|
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2753 // the dtrace method needs to convert java lang string to utf8 string. |
|
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2754 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
|
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2755 typeArrayOop jlsValue = java_lang_String::value(src); |
|
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2756 int jlsOffset = java_lang_String::offset(src); |
|
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2757 int jlsLen = java_lang_String::length(src); |
|
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2758 jchar* jlsPos = (jlsLen == 0) ? NULL : |
|
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2759 jlsValue->char_at_addr(jlsOffset); |
|
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2760 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
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2761 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
|
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2762 } |
|
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2763 #endif // ndef HAVE_DTRACE_H |
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2764 |
| 0 | 2765 // ------------------------------------------------------------------------- |
| 2766 // Java-Java calling convention | |
| 2767 // (what you use when Java calls Java) | |
| 2768 | |
| 2769 //------------------------------name_for_receiver---------------------------------- | |
| 2770 // For a given signature, return the VMReg for parameter 0. | |
| 2771 VMReg SharedRuntime::name_for_receiver() { | |
| 2772 VMRegPair regs; | |
| 2773 BasicType sig_bt = T_OBJECT; | |
| 2774 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2775 // Return argument 0 register. In the LP64 build pointers | |
| 2776 // take 2 registers, but the VM wants only the 'main' name. | |
| 2777 return regs.first(); | |
| 2778 } | |
| 2779 | |
|
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2780 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
| 0 | 2781 // This method is returning a data structure allocating as a |
| 2782 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2783 char *s = sig->as_C_string(); | |
| 2784 int len = (int)strlen(s); | |
| 2785 *s++; len--; // Skip opening paren | |
| 2786 char *t = s+len; | |
| 2787 while( *(--t) != ')' ) ; // Find close paren | |
| 2788 | |
| 2789 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2790 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2791 int cnt = 0; | |
|
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|
2792 if (has_receiver) { |
| 0 | 2793 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2794 } | |
| 2795 | |
| 2796 while( s < t ) { | |
| 2797 switch( *s++ ) { // Switch on signature character | |
| 2798 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2799 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2800 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2801 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2802 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2803 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2804 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2805 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2806 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2807 case 'L': // Oop | |
| 2808 while( *s++ != ';' ) ; // Skip signature | |
| 2809 sig_bt[cnt++] = T_OBJECT; | |
| 2810 break; | |
| 2811 case '[': { // Array | |
| 2812 do { // Skip optional size | |
| 2813 while( *s >= '0' && *s <= '9' ) s++; | |
| 2814 } while( *s++ == '[' ); // Nested arrays? | |
| 2815 // Skip element type | |
| 2816 if( s[-1] == 'L' ) | |
| 2817 while( *s++ != ';' ) ; // Skip signature | |
| 2818 sig_bt[cnt++] = T_ARRAY; | |
| 2819 break; | |
| 2820 } | |
| 2821 default : ShouldNotReachHere(); | |
| 2822 } | |
| 2823 } | |
| 2824 assert( cnt < 256, "grow table size" ); | |
| 2825 | |
| 2826 int comp_args_on_stack; | |
| 2827 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2828 | |
| 2829 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2830 // we must add that in to get "true" stack offsets. | |
| 2831 | |
| 2832 if (comp_args_on_stack) { | |
| 2833 for (int i = 0; i < cnt; i++) { | |
| 2834 VMReg reg1 = regs[i].first(); | |
| 2835 if( reg1->is_stack()) { | |
| 2836 // Yuck | |
| 2837 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2838 } | |
| 2839 VMReg reg2 = regs[i].second(); | |
| 2840 if( reg2->is_stack()) { | |
| 2841 // Yuck | |
| 2842 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2843 } | |
| 2844 regs[i].set_pair(reg2, reg1); | |
| 2845 } | |
| 2846 } | |
| 2847 | |
| 2848 // results | |
| 2849 *arg_size = cnt; | |
| 2850 return regs; | |
| 2851 } | |
| 2852 | |
| 2853 // OSR Migration Code | |
| 2854 // | |
| 2855 // This code is used convert interpreter frames into compiled frames. It is | |
| 2856 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2857 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2858 // active locks are inflated to allow them to move. The displaced headers and | |
| 2859 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2860 // back to the compiled code. The compiled code then pops the current | |
| 2861 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2862 // copies the interpreter locals and displaced headers where it wants. | |
| 2863 // Finally it calls back to free the temp buffer. | |
| 2864 // | |
| 2865 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2866 | |
| 2867 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2868 | |
| 2869 #ifdef IA64 | |
| 2870 ShouldNotReachHere(); // NYI | |
| 2871 #endif /* IA64 */ | |
| 2872 | |
| 2873 // | |
| 2874 // This code is dependent on the memory layout of the interpreter local | |
| 2875 // array and the monitors. On all of our platforms the layout is identical | |
| 2876 // so this code is shared. If some platform lays the their arrays out | |
| 2877 // differently then this code could move to platform specific code or | |
| 2878 // the code here could be modified to copy items one at a time using | |
| 2879 // frame accessor methods and be platform independent. | |
| 2880 | |
| 2881 frame fr = thread->last_frame(); | |
| 2882 assert( fr.is_interpreted_frame(), "" ); | |
| 2883 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2884 | |
| 2885 // Figure out how many monitors are active. | |
| 2886 int active_monitor_count = 0; | |
| 2887 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2888 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2889 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2890 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2891 } | |
| 2892 | |
| 2893 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2894 // could double check it. | |
| 2895 | |
|
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2896 Method* moop = fr.interpreter_frame_method(); |
| 0 | 2897 int max_locals = moop->max_locals(); |
| 2898 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2899 int buf_size_words = max_locals + active_monitor_count*2; | |
| 6197 | 2900 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
| 0 | 2901 |
| 2902 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2903 // Since there's no GC I can copy the oops blindly. | |
| 2904 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2905 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2906 (HeapWord*)&buf[0], |
| 2907 max_locals); | |
| 2908 | |
| 2909 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2910 int i = max_locals; | |
| 2911 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2912 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2913 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2914 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2915 BasicLock *lock = kptr2->lock(); | |
| 2916 // Inflate so the displaced header becomes position-independent | |
| 2917 if (lock->displaced_header()->is_unlocked()) | |
| 2918 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2919 // Now the displaced header is free to move | |
| 2920 buf[i++] = (intptr_t)lock->displaced_header(); | |
| 2921 buf[i++] = (intptr_t)kptr2->obj(); | |
| 2922 } | |
| 2923 } | |
| 2924 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2925 | |
| 2926 return buf; | |
| 2927 JRT_END | |
| 2928 | |
| 2929 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 6197 | 2930 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
| 0 | 2931 JRT_END |
| 2932 | |
| 2933 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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2934 AdapterHandlerTableIterator iter(_adapters); |
|
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2935 while (iter.has_next()) { |
|
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2936 AdapterHandlerEntry* a = iter.next(); |
|
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|
2937 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 2938 } |
| 2939 return false; | |
| 2940 } | |
| 2941 | |
|
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2942 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
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2943 AdapterHandlerTableIterator iter(_adapters); |
|
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2944 while (iter.has_next()) { |
|
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|
2945 AdapterHandlerEntry* a = iter.next(); |
|
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2946 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
|
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|
2947 st->print("Adapter for signature: "); |
|
6266
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2948 a->print_adapter_on(tty); |
| 0 | 2949 return; |
| 2950 } | |
| 2951 } | |
| 2952 assert(false, "Should have found handler"); | |
| 2953 } | |
|
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2954 |
|
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2955 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
|
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2956 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
|
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2957 (intptr_t) this, fingerprint()->as_string(), |
|
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2958 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
|
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2959 |
|
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2960 } |
|
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2961 |
|
1681
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|
2962 #ifndef PRODUCT |
|
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|
2963 |
|
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|
2964 void AdapterHandlerLibrary::print_statistics() { |
|
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|
2965 _adapters->print_statistics(); |
|
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|
2966 } |
|
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|
2967 |
| 0 | 2968 #endif /* PRODUCT */ |