Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 2405:3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
Reviewed-by: never, kvn
| author | twisti |
|---|---|
| date | Mon, 28 Mar 2011 03:58:07 -0700 |
| parents | 1b4e6a5d98e0 |
| children | 38fea01eb669 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2142 | 2 * Copyright (c) 1997, 2011, 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 | |
| 0 | 83 #include <math.h> |
| 84 | |
| 85 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); | |
| 86 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 87 char*, int, char*, int, char*, int); | |
| 88 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 89 char*, int, char*, int, char*, int); | |
| 90 | |
| 91 // Implementation of SharedRuntime | |
| 92 | |
| 93 #ifndef PRODUCT | |
| 94 // For statistics | |
| 95 int SharedRuntime::_ic_miss_ctr = 0; | |
| 96 int SharedRuntime::_wrong_method_ctr = 0; | |
| 97 int SharedRuntime::_resolve_static_ctr = 0; | |
| 98 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 99 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 100 int SharedRuntime::_implicit_null_throws = 0; | |
| 101 int SharedRuntime::_implicit_div0_throws = 0; | |
| 102 int SharedRuntime::_throw_null_ctr = 0; | |
| 103 | |
| 104 int SharedRuntime::_nof_normal_calls = 0; | |
| 105 int SharedRuntime::_nof_optimized_calls = 0; | |
| 106 int SharedRuntime::_nof_inlined_calls = 0; | |
| 107 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 108 int SharedRuntime::_nof_static_calls = 0; | |
| 109 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 110 int SharedRuntime::_nof_interface_calls = 0; | |
| 111 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 112 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 113 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 114 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 115 | |
| 116 int SharedRuntime::_new_instance_ctr=0; | |
| 117 int SharedRuntime::_new_array_ctr=0; | |
| 118 int SharedRuntime::_multi1_ctr=0; | |
| 119 int SharedRuntime::_multi2_ctr=0; | |
| 120 int SharedRuntime::_multi3_ctr=0; | |
| 121 int SharedRuntime::_multi4_ctr=0; | |
| 122 int SharedRuntime::_multi5_ctr=0; | |
| 123 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 124 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 125 int SharedRuntime::_mon_enter_ctr=0; | |
| 126 int SharedRuntime::_mon_exit_ctr=0; | |
| 127 int SharedRuntime::_partial_subtype_ctr=0; | |
| 128 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 129 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 130 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 131 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 132 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 133 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 134 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 135 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 136 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 137 int SharedRuntime::_find_handler_ctr=0; | |
| 138 int SharedRuntime::_rethrow_ctr=0; | |
| 139 | |
| 140 int SharedRuntime::_ICmiss_index = 0; | |
| 141 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 142 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 143 | |
| 144 void SharedRuntime::trace_ic_miss(address at) { | |
| 145 for (int i = 0; i < _ICmiss_index; i++) { | |
| 146 if (_ICmiss_at[i] == at) { | |
| 147 _ICmiss_count[i]++; | |
| 148 return; | |
| 149 } | |
| 150 } | |
| 151 int index = _ICmiss_index++; | |
| 152 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 153 _ICmiss_at[index] = at; | |
| 154 _ICmiss_count[index] = 1; | |
| 155 } | |
| 156 | |
| 157 void SharedRuntime::print_ic_miss_histogram() { | |
| 158 if (ICMissHistogram) { | |
| 159 tty->print_cr ("IC Miss Histogram:"); | |
| 160 int tot_misses = 0; | |
| 161 for (int i = 0; i < _ICmiss_index; i++) { | |
| 162 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 163 tot_misses += _ICmiss_count[i]; | |
| 164 } | |
| 165 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 166 } | |
| 167 } | |
| 168 #endif // PRODUCT | |
| 169 | |
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170 #ifndef SERIALGC |
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171 |
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172 // G1 write-barrier pre: executed before a pointer store. |
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173 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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174 if (orig == NULL) { |
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175 assert(false, "should be optimized out"); |
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176 return; |
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177 } |
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178 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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179 // store the original value that was in the field reference |
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180 thread->satb_mark_queue().enqueue(orig); |
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181 JRT_END |
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182 |
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183 // G1 write-barrier post: executed after a pointer store. |
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184 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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185 thread->dirty_card_queue().enqueue(card_addr); |
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186 JRT_END |
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187 |
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188 #endif // !SERIALGC |
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189 |
| 0 | 190 |
| 191 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
| 192 return x * y; | |
| 193 JRT_END | |
| 194 | |
| 195 | |
| 196 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
| 197 if (x == min_jlong && y == CONST64(-1)) { | |
| 198 return x; | |
| 199 } else { | |
| 200 return x / y; | |
| 201 } | |
| 202 JRT_END | |
| 203 | |
| 204 | |
| 205 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
| 206 if (x == min_jlong && y == CONST64(-1)) { | |
| 207 return 0; | |
| 208 } else { | |
| 209 return x % y; | |
| 210 } | |
| 211 JRT_END | |
| 212 | |
| 213 | |
| 214 const juint float_sign_mask = 0x7FFFFFFF; | |
| 215 const juint float_infinity = 0x7F800000; | |
| 216 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
| 217 const julong double_infinity = CONST64(0x7FF0000000000000); | |
| 218 | |
| 219 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
| 220 #ifdef _WIN64 | |
| 221 // 64-bit Windows on amd64 returns the wrong values for | |
| 222 // infinity operands. | |
| 223 union { jfloat f; juint i; } xbits, ybits; | |
| 224 xbits.f = x; | |
| 225 ybits.f = y; | |
| 226 // x Mod Infinity == x unless x is infinity | |
| 227 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
| 228 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
| 229 return x; | |
| 230 } | |
| 231 #endif | |
| 232 return ((jfloat)fmod((double)x,(double)y)); | |
| 233 JRT_END | |
| 234 | |
| 235 | |
| 236 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
| 237 #ifdef _WIN64 | |
| 238 union { jdouble d; julong l; } xbits, ybits; | |
| 239 xbits.d = x; | |
| 240 ybits.d = y; | |
| 241 // x Mod Infinity == x unless x is infinity | |
| 242 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
| 243 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
| 244 return x; | |
| 245 } | |
| 246 #endif | |
| 247 return ((jdouble)fmod((double)x,(double)y)); | |
| 248 JRT_END | |
| 249 | |
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250 #ifdef __SOFTFP__ |
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251 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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252 return x + y; |
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253 JRT_END |
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254 |
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255 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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256 return x - y; |
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257 JRT_END |
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258 |
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259 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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260 return x * y; |
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261 JRT_END |
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262 |
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263 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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264 return x / y; |
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265 JRT_END |
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266 |
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267 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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268 return x + y; |
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269 JRT_END |
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270 |
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271 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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272 return x - y; |
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273 JRT_END |
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274 |
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275 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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276 return x * y; |
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277 JRT_END |
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278 |
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279 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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280 return x / y; |
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281 JRT_END |
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282 |
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283 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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284 return (jfloat)x; |
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285 JRT_END |
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286 |
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287 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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288 return (jdouble)x; |
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289 JRT_END |
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290 |
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291 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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292 return (jdouble)x; |
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293 JRT_END |
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294 |
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295 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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296 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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297 JRT_END |
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298 |
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299 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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300 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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301 JRT_END |
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302 |
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303 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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304 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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305 JRT_END |
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306 |
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307 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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308 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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309 JRT_END |
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310 |
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311 // Functions to return the opposite of the aeabi functions for nan. |
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312 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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313 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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314 JRT_END |
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315 |
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316 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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317 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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318 JRT_END |
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319 |
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320 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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321 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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322 JRT_END |
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323 |
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324 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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325 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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326 JRT_END |
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327 |
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328 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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329 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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330 JRT_END |
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331 |
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332 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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333 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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334 JRT_END |
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335 |
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336 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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337 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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338 JRT_END |
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339 |
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340 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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341 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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342 JRT_END |
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343 |
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344 // Intrinsics make gcc generate code for these. |
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345 float SharedRuntime::fneg(float f) { |
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346 return -f; |
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347 } |
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348 |
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349 double SharedRuntime::dneg(double f) { |
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350 return -f; |
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351 } |
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352 |
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353 #endif // __SOFTFP__ |
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354 |
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355 #if defined(__SOFTFP__) || defined(E500V2) |
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356 // Intrinsics make gcc generate code for these. |
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357 double SharedRuntime::dabs(double f) { |
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358 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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359 } |
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360 |
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361 #endif |
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362 |
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363 #if defined(__SOFTFP__) || defined(PPC) |
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364 double SharedRuntime::dsqrt(double f) { |
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365 return sqrt(f); |
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366 } |
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367 #endif |
| 0 | 368 |
| 369 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
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370 if (g_isnan(x)) |
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371 return 0; |
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372 if (x >= (jfloat) max_jint) |
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373 return max_jint; |
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374 if (x <= (jfloat) min_jint) |
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375 return min_jint; |
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376 return (jint) x; |
| 0 | 377 JRT_END |
| 378 | |
| 379 | |
| 380 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
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381 if (g_isnan(x)) |
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382 return 0; |
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383 if (x >= (jfloat) max_jlong) |
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384 return max_jlong; |
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385 if (x <= (jfloat) min_jlong) |
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386 return min_jlong; |
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387 return (jlong) x; |
| 0 | 388 JRT_END |
| 389 | |
| 390 | |
| 391 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
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392 if (g_isnan(x)) |
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393 return 0; |
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394 if (x >= (jdouble) max_jint) |
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395 return max_jint; |
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396 if (x <= (jdouble) min_jint) |
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397 return min_jint; |
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398 return (jint) x; |
| 0 | 399 JRT_END |
| 400 | |
| 401 | |
| 402 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
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403 if (g_isnan(x)) |
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404 return 0; |
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405 if (x >= (jdouble) max_jlong) |
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406 return max_jlong; |
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407 if (x <= (jdouble) min_jlong) |
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408 return min_jlong; |
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409 return (jlong) x; |
| 0 | 410 JRT_END |
| 411 | |
| 412 | |
| 413 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
| 414 return (jfloat)x; | |
| 415 JRT_END | |
| 416 | |
| 417 | |
| 418 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
| 419 return (jfloat)x; | |
| 420 JRT_END | |
| 421 | |
| 422 | |
| 423 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
| 424 return (jdouble)x; | |
| 425 JRT_END | |
| 426 | |
| 427 // Exception handling accross interpreter/compiler boundaries | |
| 428 // | |
| 429 // exception_handler_for_return_address(...) returns the continuation address. | |
| 430 // The continuation address is the entry point of the exception handler of the | |
| 431 // previous frame depending on the return address. | |
| 432 | |
| 1295 | 433 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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434 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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435 |
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436 // Reset method handle flag. |
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437 thread->set_is_method_handle_return(false); |
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438 |
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439 // The fastest case first |
| 0 | 440 CodeBlob* blob = CodeCache::find_blob(return_address); |
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441 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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442 if (nm != NULL) { |
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443 // Set flag if return address is a method handle call site. |
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444 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
| 0 | 445 // native nmethods don't have exception handlers |
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446 assert(!nm->is_native_method(), "no exception handler"); |
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447 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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448 if (nm->is_deopt_pc(return_address)) { |
| 0 | 449 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
| 450 } else { | |
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451 return nm->exception_begin(); |
| 0 | 452 } |
| 453 } | |
| 454 | |
| 455 // Entry code | |
| 456 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 457 return StubRoutines::catch_exception_entry(); | |
| 458 } | |
| 459 // Interpreted code | |
| 460 if (Interpreter::contains(return_address)) { | |
| 461 return Interpreter::rethrow_exception_entry(); | |
| 462 } | |
| 463 | |
|
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464 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
| 0 | 465 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
|
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466 |
| 0 | 467 #ifndef PRODUCT |
| 468 { ResourceMark rm; | |
| 469 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 470 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 471 tty->print_cr("b) other problem"); | |
| 472 } | |
| 473 #endif // PRODUCT | |
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474 |
| 0 | 475 ShouldNotReachHere(); |
| 476 return NULL; | |
| 477 } | |
| 478 | |
| 479 | |
| 1295 | 480 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 481 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 482 JRT_END |
| 483 | |
| 1295 | 484 |
| 0 | 485 address SharedRuntime::get_poll_stub(address pc) { |
| 486 address stub; | |
| 487 // Look up the code blob | |
| 488 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 489 | |
| 490 // Should be an nmethod | |
| 491 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 492 | |
| 493 // Look up the relocation information | |
| 494 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 495 "safepoint polling: type must be poll" ); | |
| 496 | |
| 497 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 498 "Only polling locations are used for safepoint"); | |
| 499 | |
| 500 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
| 501 if (at_poll_return) { | |
| 502 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 503 "polling page return stub not created yet"); | |
| 1748 | 504 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
| 0 | 505 } else { |
| 506 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 507 "polling page safepoint stub not created yet"); | |
| 1748 | 508 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 509 } |
| 510 #ifndef PRODUCT | |
| 511 if( TraceSafepoint ) { | |
| 512 char buf[256]; | |
| 513 jio_snprintf(buf, sizeof(buf), | |
| 514 "... found polling page %s exception at pc = " | |
| 515 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 516 at_poll_return ? "return" : "loop", | |
| 517 (intptr_t)pc, (intptr_t)stub); | |
| 518 tty->print_raw_cr(buf); | |
| 519 } | |
| 520 #endif // PRODUCT | |
| 521 return stub; | |
| 522 } | |
| 523 | |
| 524 | |
|
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525 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 526 assert(caller.is_interpreted_frame(), ""); |
| 527 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 528 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
| 529 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
| 530 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
| 531 return result; | |
| 532 } | |
| 533 | |
| 534 | |
| 535 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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536 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 537 vframeStream vfst(thread, true); |
| 538 methodHandle method = methodHandle(thread, vfst.method()); | |
| 539 address bcp = method()->bcp_from(vfst.bci()); | |
| 540 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 541 } | |
| 542 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 543 } | |
| 544 | |
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545 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 546 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 547 throw_and_post_jvmti_exception(thread, h_exception); | |
| 548 } | |
| 549 | |
|
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550 // The interpreter code to call this tracing function is only |
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551 // called/generated when TraceRedefineClasses has the right bits |
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552 // set. Since obsolete methods are never compiled, we don't have |
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553 // to modify the compilers to generate calls to this function. |
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554 // |
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555 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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556 JavaThread* thread, methodOopDesc* method)) |
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557 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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558 |
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559 if (method->is_obsolete()) { |
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560 // We are calling an obsolete method, but this is not necessarily |
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561 // an error. Our method could have been redefined just after we |
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562 // fetched the methodOop from the constant pool. |
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563 |
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564 // RC_TRACE macro has an embedded ResourceMark |
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565 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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566 ("calling obsolete method '%s'", |
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567 method->name_and_sig_as_C_string())); |
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568 if (RC_TRACE_ENABLED(0x00002000)) { |
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569 // this option is provided to debug calls to obsolete methods |
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570 guarantee(false, "faulting at call to an obsolete method."); |
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571 } |
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572 } |
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573 return 0; |
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574 JRT_END |
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575 |
| 0 | 576 // ret_pc points into caller; we are returning caller's exception handler |
| 577 // for given exception | |
| 578 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 579 bool force_unwind, bool top_frame_only) { | |
| 580 assert(nm != NULL, "must exist"); | |
| 581 ResourceMark rm; | |
| 582 | |
| 583 ScopeDesc* sd = nm->scope_desc_at(ret_pc); | |
| 584 // determine handler bci, if any | |
| 585 EXCEPTION_MARK; | |
| 586 | |
| 587 int handler_bci = -1; | |
| 588 int scope_depth = 0; | |
| 589 if (!force_unwind) { | |
| 590 int bci = sd->bci(); | |
| 591 do { | |
| 592 bool skip_scope_increment = false; | |
| 593 // exception handler lookup | |
| 594 KlassHandle ek (THREAD, exception->klass()); | |
| 595 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
| 596 if (HAS_PENDING_EXCEPTION) { | |
| 597 // We threw an exception while trying to find the exception handler. | |
| 598 // Transfer the new exception to the exception handle which will | |
| 599 // be set into thread local storage, and do another lookup for an | |
| 600 // exception handler for this exception, this time starting at the | |
| 601 // BCI of the exception handler which caused the exception to be | |
| 602 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 603 // argument to ensure that the correct exception is thrown (4870175). | |
| 604 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 605 CLEAR_PENDING_EXCEPTION; | |
| 606 if (handler_bci >= 0) { | |
| 607 bci = handler_bci; | |
| 608 handler_bci = -1; | |
| 609 skip_scope_increment = true; | |
| 610 } | |
| 611 } | |
| 612 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { | |
| 613 sd = sd->sender(); | |
| 614 if (sd != NULL) { | |
| 615 bci = sd->bci(); | |
| 616 } | |
| 617 ++scope_depth; | |
| 618 } | |
| 619 } while (!top_frame_only && handler_bci < 0 && sd != NULL); | |
| 620 } | |
| 621 | |
| 622 // found handling method => lookup exception handler | |
| 1748 | 623 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 624 |
| 625 ExceptionHandlerTable table(nm); | |
| 626 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 627 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 628 // Allow abbreviated catch tables. The idea is to allow a method | |
| 629 // to materialize its exceptions without committing to the exact | |
| 630 // routing of exceptions. In particular this is needed for adding | |
| 631 // a synthethic handler to unlock monitors when inlining | |
| 632 // synchonized methods since the unlock path isn't represented in | |
| 633 // the bytecodes. | |
| 634 t = table.entry_for(catch_pco, -1, 0); | |
| 635 } | |
| 636 | |
|
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637 #ifdef COMPILER1 |
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638 if (t == NULL && nm->is_compiled_by_c1()) { |
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639 assert(nm->unwind_handler_begin() != NULL, ""); |
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640 return nm->unwind_handler_begin(); |
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641 } |
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642 #endif |
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643 |
| 0 | 644 if (t == NULL) { |
| 645 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 646 tty->print_cr(" Exception:"); | |
| 647 exception->print(); | |
| 648 tty->cr(); | |
| 649 tty->print_cr(" Compiled exception table :"); | |
| 650 table.print(); | |
| 651 nm->print_code(); | |
| 652 guarantee(false, "missing exception handler"); | |
| 653 return NULL; | |
| 654 } | |
| 655 | |
| 1748 | 656 return nm->code_begin() + t->pco(); |
| 0 | 657 } |
| 658 | |
| 659 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 660 // These errors occur only at call sites | |
| 661 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 662 JRT_END | |
| 663 | |
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664 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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665 // These errors occur only at call sites |
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666 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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667 JRT_END |
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668 |
| 0 | 669 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 670 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 671 JRT_END | |
| 672 | |
| 673 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 674 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 675 JRT_END | |
| 676 | |
| 677 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 678 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 679 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 680 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 681 JRT_END | |
| 682 | |
| 683 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 684 // We avoid using the normal exception construction in this case because | |
| 685 // it performs an upcall to Java, and we're already out of stack space. | |
| 686 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
| 687 oop exception_oop = instanceKlass::cast(k)->allocate_instance(CHECK); | |
| 688 Handle exception (thread, exception_oop); | |
| 689 if (StackTraceInThrowable) { | |
| 690 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 691 } | |
| 692 throw_and_post_jvmti_exception(thread, exception); | |
| 693 JRT_END | |
| 694 | |
| 695 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, | |
| 696 address pc, | |
| 697 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 698 { | |
| 699 address target_pc = NULL; | |
| 700 | |
| 701 if (Interpreter::contains(pc)) { | |
| 702 #ifdef CC_INTERP | |
| 703 // C++ interpreter doesn't throw implicit exceptions | |
| 704 ShouldNotReachHere(); | |
| 705 #else | |
| 706 switch (exception_kind) { | |
| 707 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 708 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 709 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 710 default: ShouldNotReachHere(); | |
| 711 } | |
| 712 #endif // !CC_INTERP | |
| 713 } else { | |
| 714 switch (exception_kind) { | |
| 715 case STACK_OVERFLOW: { | |
| 716 // Stack overflow only occurs upon frame setup; the callee is | |
| 717 // going to be unwound. Dispatch to a shared runtime stub | |
| 718 // which will cause the StackOverflowError to be fabricated | |
| 719 // and processed. | |
| 720 // For stack overflow in deoptimization blob, cleanup thread. | |
| 721 if (thread->deopt_mark() != NULL) { | |
| 722 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 723 } | |
| 724 return StubRoutines::throw_StackOverflowError_entry(); | |
| 725 } | |
| 726 | |
| 727 case IMPLICIT_NULL: { | |
| 728 if (VtableStubs::contains(pc)) { | |
| 729 // We haven't yet entered the callee frame. Fabricate an | |
| 730 // exception and begin dispatching it in the caller. Since | |
| 731 // the caller was at a call site, it's safe to destroy all | |
| 732 // caller-saved registers, as these entry points do. | |
| 733 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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734 |
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735 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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736 if (vt_stub == NULL) return NULL; |
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737 |
| 0 | 738 if (vt_stub->is_abstract_method_error(pc)) { |
| 739 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 740 return StubRoutines::throw_AbstractMethodError_entry(); | |
| 741 } else { | |
| 742 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 743 } | |
| 744 } else { | |
| 745 CodeBlob* cb = CodeCache::find_blob(pc); | |
|
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746 |
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747 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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748 if (cb == NULL) return NULL; |
| 0 | 749 |
| 750 // Exception happened in CodeCache. Must be either: | |
| 751 // 1. Inline-cache check in C2I handler blob, | |
| 752 // 2. Inline-cache check in nmethod, or | |
| 753 // 3. Implict null exception in nmethod | |
| 754 | |
| 755 if (!cb->is_nmethod()) { | |
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756 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
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757 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
| 0 | 758 // There is no handler here, so we will simply unwind. |
| 759 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 760 } | |
| 761 | |
| 762 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 763 nmethod* nm = (nmethod*)cb; | |
| 764 if (nm->inlinecache_check_contains(pc)) { | |
| 765 // exception happened inside inline-cache check code | |
| 766 // => the nmethod is not yet active (i.e., the frame | |
| 767 // is not set up yet) => use return address pushed by | |
| 768 // caller => don't push another return address | |
| 769 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 770 } | |
| 771 | |
| 772 #ifndef PRODUCT | |
| 773 _implicit_null_throws++; | |
| 774 #endif | |
| 775 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 776 // If there's an unexpected fault, target_pc might be NULL, |
| 777 // in which case we want to fall through into the normal | |
| 778 // error handling code. | |
| 0 | 779 } |
| 780 | |
| 781 break; // fall through | |
| 782 } | |
| 783 | |
| 784 | |
| 785 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 786 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 787 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 788 #ifndef PRODUCT | |
| 789 _implicit_div0_throws++; | |
| 790 #endif | |
| 791 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 792 // If there's an unexpected fault, target_pc might be NULL, |
| 793 // in which case we want to fall through into the normal | |
| 794 // error handling code. | |
| 0 | 795 break; // fall through |
| 796 } | |
| 797 | |
| 798 default: ShouldNotReachHere(); | |
| 799 } | |
| 800 | |
| 801 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 802 | |
| 803 // for AbortVMOnException flag | |
| 804 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 805 if (exception_kind == IMPLICIT_NULL) { | |
| 806 Events::log("Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); | |
| 807 } else { | |
| 808 Events::log("Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); | |
| 809 } | |
| 810 return target_pc; | |
| 811 } | |
| 812 | |
| 813 ShouldNotReachHere(); | |
| 814 return NULL; | |
| 815 } | |
| 816 | |
| 817 | |
| 818 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
| 819 { | |
| 820 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
| 821 } | |
| 822 JNI_END | |
| 823 | |
| 824 | |
| 825 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 826 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 827 } | |
| 828 | |
| 829 | |
| 830 #ifndef PRODUCT | |
| 831 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 832 const frame f = thread->last_frame(); | |
| 833 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 834 #ifndef PRODUCT | |
| 835 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 836 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 837 #endif // !PRODUCT | |
| 838 return preserve_this_value; | |
| 839 JRT_END | |
| 840 #endif // !PRODUCT | |
| 841 | |
| 842 | |
| 843 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 844 os::yield_all(attempts); | |
| 845 JRT_END | |
| 846 | |
| 847 | |
| 848 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 849 assert(obj->is_oop(), "must be a valid oop"); | |
| 850 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
| 851 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
| 852 JRT_END | |
| 853 | |
| 854 | |
| 855 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 856 if (thread != NULL) { | |
| 857 if (thread->is_Java_thread()) { | |
| 858 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 859 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 860 } | |
| 861 } | |
| 862 return 0; | |
| 863 } | |
| 864 | |
| 865 /** | |
| 866 * This function ought to be a void function, but cannot be because | |
| 867 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 868 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 869 */ | |
| 870 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 871 return dtrace_object_alloc_base(Thread::current(), o); | |
| 872 } | |
| 873 | |
| 874 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 875 assert(DTraceAllocProbes, "wrong call"); | |
| 876 Klass* klass = o->blueprint(); | |
| 877 int size = o->size(); | |
|
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878 Symbol* name = klass->name(); |
| 0 | 879 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 880 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 881 return 0; | |
| 882 } | |
| 883 | |
| 884 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
| 885 JavaThread* thread, methodOopDesc* method)) | |
| 886 assert(DTraceMethodProbes, "wrong call"); | |
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887 Symbol* kname = method->klass_name(); |
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888 Symbol* name = method->name(); |
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889 Symbol* sig = method->signature(); |
| 0 | 890 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 891 kname->bytes(), kname->utf8_length(), | |
| 892 name->bytes(), name->utf8_length(), | |
| 893 sig->bytes(), sig->utf8_length()); | |
| 894 return 0; | |
| 895 JRT_END | |
| 896 | |
| 897 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
| 898 JavaThread* thread, methodOopDesc* method)) | |
| 899 assert(DTraceMethodProbes, "wrong call"); | |
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900 Symbol* kname = method->klass_name(); |
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901 Symbol* name = method->name(); |
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902 Symbol* sig = method->signature(); |
| 0 | 903 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 904 kname->bytes(), kname->utf8_length(), | |
| 905 name->bytes(), name->utf8_length(), | |
| 906 sig->bytes(), sig->utf8_length()); | |
| 907 return 0; | |
| 908 JRT_END | |
| 909 | |
| 910 | |
| 911 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 912 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 913 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 914 // vtable updates, etc. Caller frame must be compiled. | |
| 915 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 916 ResourceMark rm(THREAD); | |
| 917 | |
| 918 // last java frame on stack (which includes native call frames) | |
| 919 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 920 | |
| 921 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 922 } | |
| 923 | |
| 924 | |
| 925 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 926 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 927 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 928 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 929 vframeStream& vfst, | |
| 930 Bytecodes::Code& bc, | |
| 931 CallInfo& callinfo, TRAPS) { | |
| 932 Handle receiver; | |
| 933 Handle nullHandle; //create a handy null handle for exception returns | |
| 934 | |
| 935 assert(!vfst.at_end(), "Java frame must exist"); | |
| 936 | |
| 937 // Find caller and bci from vframe | |
| 938 methodHandle caller (THREAD, vfst.method()); | |
| 939 int bci = vfst.bci(); | |
| 940 | |
| 941 // Find bytecode | |
| 2142 | 942 Bytecode_invoke bytecode(caller, bci); |
| 943 bc = bytecode.java_code(); | |
| 944 int bytecode_index = bytecode.index(); | |
| 0 | 945 |
| 946 // Find receiver for non-static call | |
| 947 if (bc != Bytecodes::_invokestatic) { | |
| 948 // This register map must be update since we need to find the receiver for | |
| 949 // compiled frames. The receiver might be in a register. | |
| 950 RegisterMap reg_map2(thread); | |
| 951 frame stubFrame = thread->last_frame(); | |
| 952 // Caller-frame is a compiled frame | |
| 953 frame callerFrame = stubFrame.sender(®_map2); | |
| 954 | |
| 2142 | 955 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 956 if (callee.is_null()) { |
| 957 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 958 } | |
| 959 // Retrieve from a compiled argument list | |
| 960 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 961 | |
| 962 if (receiver.is_null()) { | |
| 963 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 964 } | |
| 965 } | |
| 966 | |
| 967 // Resolve method. This is parameterized by bytecode. | |
| 968 constantPoolHandle constants (THREAD, caller->constants()); | |
| 969 assert (receiver.is_null() || receiver->is_oop(), "wrong receiver"); | |
| 970 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); | |
| 971 | |
| 972 #ifdef ASSERT | |
| 973 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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974 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
| 0 | 975 assert(receiver.not_null(), "should have thrown exception"); |
| 976 KlassHandle receiver_klass (THREAD, receiver->klass()); | |
| 977 klassOop rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); | |
| 978 // klass is already loaded | |
| 979 KlassHandle static_receiver_klass (THREAD, rk); | |
| 980 assert(receiver_klass->is_subtype_of(static_receiver_klass()), "actual receiver must be subclass of static receiver klass"); | |
| 981 if (receiver_klass->oop_is_instance()) { | |
| 982 if (instanceKlass::cast(receiver_klass())->is_not_initialized()) { | |
| 983 tty->print_cr("ERROR: Klass not yet initialized!!"); | |
| 984 receiver_klass.print(); | |
| 985 } | |
| 986 assert (!instanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); | |
| 987 } | |
| 988 } | |
| 989 #endif | |
| 990 | |
| 991 return receiver; | |
| 992 } | |
| 993 | |
| 994 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 995 ResourceMark rm(THREAD); | |
| 996 // We need first to check if any Java activations (compiled, interpreted) | |
| 997 // exist on the stack since last JavaCall. If not, we need | |
| 998 // to get the target method from the JavaCall wrapper. | |
| 999 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1000 methodHandle callee_method; | |
| 1001 if (vfst.at_end()) { | |
| 1002 // No Java frames were found on stack since we did the JavaCall. | |
| 1003 // Hence the stack can only contain an entry_frame. We need to | |
| 1004 // find the target method from the stub frame. | |
| 1005 RegisterMap reg_map(thread, false); | |
| 1006 frame fr = thread->last_frame(); | |
| 1007 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1008 fr = fr.sender(®_map); | |
| 1009 assert(fr.is_entry_frame(), "must be"); | |
| 1010 // fr is now pointing to the entry frame. | |
| 1011 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1012 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1013 } else { | |
| 1014 Bytecodes::Code bc; | |
| 1015 CallInfo callinfo; | |
| 1016 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1017 callee_method = callinfo.selected_method(); | |
| 1018 } | |
| 1019 assert(callee_method()->is_method(), "must be"); | |
| 1020 return callee_method; | |
| 1021 } | |
| 1022 | |
| 1023 // Resolves a call. | |
| 1024 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1025 bool is_virtual, | |
| 1026 bool is_optimized, TRAPS) { | |
| 1027 methodHandle callee_method; | |
| 1028 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1029 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1030 int retry_count = 0; | |
| 1031 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1032 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1033 // If has a pending exception then there is no need to re-try to |
| 1034 // resolve this method. | |
| 1035 // If the method has been redefined, we need to try again. | |
| 1036 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1037 // require that java.lang.Object has been updated. | |
| 1038 | |
| 1039 // It is very unlikely that method is redefined more than 100 times | |
| 1040 // in the middle of resolve. If it is looping here more than 100 times | |
| 1041 // means then there could be a bug here. | |
| 1042 guarantee((retry_count++ < 100), | |
| 1043 "Could not resolve to latest version of redefined method"); | |
| 1044 // method is redefined in the middle of resolve so re-try. | |
| 1045 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1046 } | |
| 1047 } | |
| 1048 return callee_method; | |
| 1049 } | |
| 1050 | |
| 1051 // Resolves a call. The compilers generate code for calls that go here | |
| 1052 // and are patched with the real destination of the call. | |
| 1053 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1054 bool is_virtual, | |
| 1055 bool is_optimized, TRAPS) { | |
| 1056 | |
| 1057 ResourceMark rm(thread); | |
| 1058 RegisterMap cbl_map(thread, false); | |
| 1059 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1060 | |
| 1295 | 1061 CodeBlob* caller_cb = caller_frame.cb(); |
| 1062 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1063 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 0 | 1064 // make sure caller is not getting deoptimized |
| 1065 // and removed before we are done with it. | |
| 1066 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1067 nmethodLocker caller_lock(caller_nm); |
| 0 | 1068 |
| 1069 | |
| 1070 // determine call info & receiver | |
| 1071 // note: a) receiver is NULL for static calls | |
| 1072 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1073 CallInfo call_info; | |
| 1074 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1075 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1076 call_info, CHECK_(methodHandle())); | |
| 1077 methodHandle callee_method = call_info.selected_method(); | |
| 1078 | |
| 1079 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic) || | |
| 1080 ( is_virtual && invoke_code != Bytecodes::_invokestatic), "inconsistent bytecode"); | |
| 1081 | |
| 1082 #ifndef PRODUCT | |
| 1083 // tracing/debugging/statistics | |
| 1084 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1085 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1086 (&_resolve_static_ctr); | |
| 1087 Atomic::inc(addr); | |
| 1088 | |
| 1089 if (TraceCallFixup) { | |
| 1090 ResourceMark rm(thread); | |
| 1091 tty->print("resolving %s%s (%s) call to", | |
| 1092 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1093 Bytecodes::name(invoke_code)); | |
| 1094 callee_method->print_short_name(tty); | |
| 1095 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1096 } | |
| 1097 #endif | |
| 1098 | |
| 1295 | 1099 // JSR 292 |
| 1100 // If the resolved method is a MethodHandle invoke target the call | |
| 1101 // site must be a MethodHandle call site. | |
| 1102 if (callee_method->is_method_handle_invoke()) { | |
| 1103 assert(caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); | |
| 1104 } | |
| 1105 | |
| 0 | 1106 // Compute entry points. This might require generation of C2I converter |
| 1107 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1108 // computation of the entry points is independent of patching the call. We | |
| 1109 // always return the entry-point, but we only patch the stub if the call has | |
| 1110 // not been deoptimized. Return values: For a virtual call this is an | |
| 1111 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1112 // virtual this is just a destination address. | |
| 1113 | |
| 1114 StaticCallInfo static_call_info; | |
| 1115 CompiledICInfo virtual_call_info; | |
| 1116 | |
| 1117 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1118 // we are done patching the code. | |
| 1295 | 1119 nmethod* callee_nm = callee_method->code(); |
| 1120 nmethodLocker nl_callee(callee_nm); | |
| 0 | 1121 #ifdef ASSERT |
| 1295 | 1122 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1123 #endif |
| 1124 | |
| 1125 if (is_virtual) { | |
| 1126 assert(receiver.not_null(), "sanity check"); | |
| 1127 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
| 1128 KlassHandle h_klass(THREAD, receiver->klass()); | |
| 1129 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
| 1130 is_optimized, static_bound, virtual_call_info, | |
| 1131 CHECK_(methodHandle())); | |
| 1132 } else { | |
| 1133 // static call | |
| 1134 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1135 } | |
| 1136 | |
| 1137 // grab lock, check for deoptimization and potentially patch caller | |
| 1138 { | |
| 1139 MutexLocker ml_patch(CompiledIC_lock); | |
| 1140 | |
| 1141 // Now that we are ready to patch if the methodOop was redefined then | |
| 1142 // don't update call site and let the caller retry. | |
| 1143 | |
| 1144 if (!callee_method->is_old()) { | |
| 1145 #ifdef ASSERT | |
| 1146 // We must not try to patch to jump to an already unloaded method. | |
| 1147 if (dest_entry_point != 0) { | |
| 1148 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
| 1149 "should not unload nmethod while locked"); | |
| 1150 } | |
| 1151 #endif | |
| 1152 if (is_virtual) { | |
| 1153 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1154 if (inline_cache->is_clean()) { | |
| 1155 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1156 } | |
| 1157 } else { | |
| 1158 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1159 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1160 } | |
| 1161 } | |
| 1162 | |
| 1163 } // unlock CompiledIC_lock | |
| 1164 | |
| 1165 return callee_method; | |
| 1166 } | |
| 1167 | |
| 1168 | |
| 1169 // Inline caches exist only in compiled code | |
| 1170 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1171 #ifdef ASSERT | |
| 1172 RegisterMap reg_map(thread, false); | |
| 1173 frame stub_frame = thread->last_frame(); | |
| 1174 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1175 frame caller_frame = stub_frame.sender(®_map); | |
| 1176 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
| 1177 #endif /* ASSERT */ | |
| 1178 | |
| 1179 methodHandle callee_method; | |
| 1180 JRT_BLOCK | |
| 1181 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
| 1182 // Return methodOop through TLS | |
| 1183 thread->set_vm_result(callee_method()); | |
| 1184 JRT_BLOCK_END | |
| 1185 // return compiled code entry point after potential safepoints | |
| 1186 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1187 return callee_method->verified_code_entry(); | |
| 1188 JRT_END | |
| 1189 | |
| 1190 | |
| 1191 // Handle call site that has been made non-entrant | |
| 1192 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1193 // 6243940 We might end up in here if the callee is deoptimized | |
| 1194 // as we race to call it. We don't want to take a safepoint if | |
| 1195 // the caller was interpreted because the caller frame will look | |
| 1196 // interpreted to the stack walkers and arguments are now | |
| 1197 // "compiled" so it is much better to make this transition | |
| 1198 // invisible to the stack walking code. The i2c path will | |
| 1199 // place the callee method in the callee_target. It is stashed | |
| 1200 // there because if we try and find the callee by normal means a | |
| 1201 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1202 RegisterMap reg_map(thread, false); | |
| 1203 frame stub_frame = thread->last_frame(); | |
| 1204 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1205 frame caller_frame = stub_frame.sender(®_map); | |
|
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1206 |
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1207 // MethodHandle invokes don't have a CompiledIC and should always |
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1208 // simply redispatch to the callee_target. |
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1209 address sender_pc = caller_frame.pc(); |
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1210 CodeBlob* sender_cb = caller_frame.cb(); |
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1211 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
| 1204 | 1212 bool is_mh_invoke_via_adapter = false; // Direct c2c call or via adapter? |
| 1213 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) { | |
| 1214 // If the callee_target is set, then we have come here via an i2c | |
| 1215 // adapter. | |
| 1216 methodOop callee = thread->callee_target(); | |
| 1217 if (callee != NULL) { | |
| 1218 assert(callee->is_method(), "sanity"); | |
| 1219 is_mh_invoke_via_adapter = true; | |
| 1220 } | |
| 1221 } | |
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1222 |
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1223 if (caller_frame.is_interpreted_frame() || |
| 1204 | 1224 caller_frame.is_entry_frame() || |
| 1225 is_mh_invoke_via_adapter) { | |
| 0 | 1226 methodOop callee = thread->callee_target(); |
| 1227 guarantee(callee != NULL && callee->is_method(), "bad handshake"); | |
| 1228 thread->set_vm_result(callee); | |
| 1229 thread->set_callee_target(NULL); | |
| 1230 return callee->get_c2i_entry(); | |
| 1231 } | |
| 1232 | |
| 1233 // Must be compiled to compiled path which is safe to stackwalk | |
| 1234 methodHandle callee_method; | |
| 1235 JRT_BLOCK | |
| 1236 // Force resolving of caller (if we called from compiled frame) | |
| 1237 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
| 1238 thread->set_vm_result(callee_method()); | |
| 1239 JRT_BLOCK_END | |
| 1240 // return compiled code entry point after potential safepoints | |
| 1241 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1242 return callee_method->verified_code_entry(); | |
| 1243 JRT_END | |
| 1244 | |
| 1245 | |
| 1246 // resolve a static call and patch code | |
| 1247 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1248 methodHandle callee_method; | |
| 1249 JRT_BLOCK | |
| 1250 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
| 1251 thread->set_vm_result(callee_method()); | |
| 1252 JRT_BLOCK_END | |
| 1253 // return compiled code entry point after potential safepoints | |
| 1254 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1255 return callee_method->verified_code_entry(); | |
| 1256 JRT_END | |
| 1257 | |
| 1258 | |
| 1259 // resolve virtual call and update inline cache to monomorphic | |
| 1260 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1261 methodHandle callee_method; | |
| 1262 JRT_BLOCK | |
| 1263 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
| 1264 thread->set_vm_result(callee_method()); | |
| 1265 JRT_BLOCK_END | |
| 1266 // return compiled code entry point after potential safepoints | |
| 1267 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1268 return callee_method->verified_code_entry(); | |
| 1269 JRT_END | |
| 1270 | |
| 1271 | |
| 1272 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1273 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1274 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1275 methodHandle callee_method; | |
| 1276 JRT_BLOCK | |
| 1277 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
| 1278 thread->set_vm_result(callee_method()); | |
| 1279 JRT_BLOCK_END | |
| 1280 // return compiled code entry point after potential safepoints | |
| 1281 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1282 return callee_method->verified_code_entry(); | |
| 1283 JRT_END | |
| 1284 | |
| 1285 | |
| 1286 | |
| 1287 | |
| 1288 | |
| 1289 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1290 ResourceMark rm(thread); | |
| 1291 CallInfo call_info; | |
| 1292 Bytecodes::Code bc; | |
| 1293 | |
| 1294 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1295 // receivers for non-static calls | |
| 1296 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1297 CHECK_(methodHandle())); | |
| 1298 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1299 // If we fell thru to below we would think that the site was going megamorphic | |
| 1300 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1301 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1302 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1303 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1304 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1305 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1306 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1307 // | |
| 1308 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1309 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1310 if (TraceCallFixup) { | |
| 1311 RegisterMap reg_map(thread, false); | |
| 1312 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1313 ResourceMark rm(thread); | |
| 1314 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1315 callee_method->print_short_name(tty); | |
| 1316 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1317 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1318 } | |
| 1319 return callee_method; | |
| 1320 } | |
| 1321 | |
| 1322 methodHandle callee_method = call_info.selected_method(); | |
| 1323 | |
| 1324 bool should_be_mono = false; | |
| 1325 | |
| 1326 #ifndef PRODUCT | |
| 1327 Atomic::inc(&_ic_miss_ctr); | |
| 1328 | |
| 1329 // Statistics & Tracing | |
| 1330 if (TraceCallFixup) { | |
| 1331 ResourceMark rm(thread); | |
| 1332 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1333 callee_method->print_short_name(tty); | |
| 1334 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1335 } | |
| 1336 | |
| 1337 if (ICMissHistogram) { | |
| 1338 MutexLocker m(VMStatistic_lock); | |
| 1339 RegisterMap reg_map(thread, false); | |
| 1340 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1341 // produce statistics under the lock | |
| 1342 trace_ic_miss(f.pc()); | |
| 1343 } | |
| 1344 #endif | |
| 1345 | |
| 1346 // install an event collector so that when a vtable stub is created the | |
| 1347 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1348 // event can't be posted when the stub is created as locks are held | |
| 1349 // - instead the event will be deferred until the event collector goes | |
| 1350 // out of scope. | |
| 1351 JvmtiDynamicCodeEventCollector event_collector; | |
| 1352 | |
| 1353 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1354 // made non-entrant or we are called from interpreted. | |
| 1355 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1356 RegisterMap reg_map(thread, false); | |
| 1357 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1358 CodeBlob* cb = caller_frame.cb(); | |
| 1359 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1360 // Not a non-entrant nmethod, so find inline_cache | |
| 1361 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1362 bool should_be_mono = false; | |
| 1363 if (inline_cache->is_optimized()) { | |
| 1364 if (TraceCallFixup) { | |
| 1365 ResourceMark rm(thread); | |
| 1366 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1367 callee_method->print_short_name(tty); | |
| 1368 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1369 } | |
| 1370 should_be_mono = true; | |
| 1371 } else { | |
| 1372 compiledICHolderOop ic_oop = (compiledICHolderOop) inline_cache->cached_oop(); | |
| 1373 if ( ic_oop != NULL && ic_oop->is_compiledICHolder()) { | |
| 1374 | |
| 1375 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1376 // This isn't a real miss. We must have seen that compiled code | |
| 1377 // is now available and we want the call site converted to a | |
| 1378 // monomorphic compiled call site. | |
| 1379 // We can't assert for callee_method->code() != NULL because it | |
| 1380 // could have been deoptimized in the meantime | |
| 1381 if (TraceCallFixup) { | |
| 1382 ResourceMark rm(thread); | |
| 1383 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1384 callee_method->print_short_name(tty); | |
| 1385 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1386 } | |
| 1387 should_be_mono = true; | |
| 1388 } | |
| 1389 } | |
| 1390 } | |
| 1391 | |
| 1392 if (should_be_mono) { | |
| 1393 | |
| 1394 // We have a path that was monomorphic but was going interpreted | |
| 1395 // and now we have (or had) a compiled entry. We correct the IC | |
| 1396 // by using a new icBuffer. | |
| 1397 CompiledICInfo info; | |
| 1398 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1399 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1400 receiver_klass, | |
| 1401 inline_cache->is_optimized(), | |
| 1402 false, | |
| 1403 info, CHECK_(methodHandle())); | |
| 1404 inline_cache->set_to_monomorphic(info); | |
| 1405 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 1406 // Change to megamorphic | |
| 1407 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1408 } else { | |
| 1409 // Either clean or megamorphic | |
| 1410 } | |
| 1411 } | |
| 1412 } // Release CompiledIC_lock | |
| 1413 | |
| 1414 return callee_method; | |
| 1415 } | |
| 1416 | |
| 1417 // | |
| 1418 // Resets a call-site in compiled code so it will get resolved again. | |
| 1419 // This routines handles both virtual call sites, optimized virtual call | |
| 1420 // sites, and static call sites. Typically used to change a call sites | |
| 1421 // destination from compiled to interpreted. | |
| 1422 // | |
| 1423 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1424 ResourceMark rm(thread); | |
| 1425 RegisterMap reg_map(thread, false); | |
| 1426 frame stub_frame = thread->last_frame(); | |
| 1427 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1428 frame caller = stub_frame.sender(®_map); | |
| 1429 | |
| 1430 // Do nothing if the frame isn't a live compiled frame. | |
| 1431 // nmethod could be deoptimized by the time we get here | |
| 1432 // so no update to the caller is needed. | |
| 1433 | |
| 1434 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1435 | |
| 1436 address pc = caller.pc(); | |
| 1437 Events::log("update call-site at pc " INTPTR_FORMAT, pc); | |
| 1438 | |
| 1439 // Default call_addr is the location of the "basic" call. | |
| 1440 // Determine the address of the call we a reresolving. With | |
| 1441 // Inline Caches we will always find a recognizable call. | |
| 1442 // With Inline Caches disabled we may or may not find a | |
| 1443 // recognizable call. We will always find a call for static | |
| 1444 // calls and for optimized virtual calls. For vanilla virtual | |
| 1445 // calls it depends on the state of the UseInlineCaches switch. | |
| 1446 // | |
| 1447 // With Inline Caches disabled we can get here for a virtual call | |
| 1448 // for two reasons: | |
| 1449 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1450 // will run us thru handle_wrong_method and we will eventually | |
| 1451 // end up in the interpreter to throw the ame. | |
| 1452 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1453 // call and between the time we fetch the entry address and | |
| 1454 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1455 // we will wind up in the interprter (thru a c2i with c2). | |
| 1456 // | |
| 1457 address call_addr = NULL; | |
| 1458 { | |
| 1459 // Get call instruction under lock because another thread may be | |
| 1460 // busy patching it. | |
| 1461 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1462 // Location of call instruction | |
| 1463 if (NativeCall::is_call_before(pc)) { | |
| 1464 NativeCall *ncall = nativeCall_before(pc); | |
| 1465 call_addr = ncall->instruction_address(); | |
| 1466 } | |
| 1467 } | |
| 1468 | |
| 1469 // Check for static or virtual call | |
| 1470 bool is_static_call = false; | |
| 1471 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1472 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1473 // this is done with it. | |
| 1474 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1475 nmethodLocker nmlock(caller_nm); | |
| 1476 | |
| 1477 if (call_addr != NULL) { | |
| 1478 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1479 int ret = iter.next(); // Get item | |
| 1480 if (ret) { | |
| 1481 assert(iter.addr() == call_addr, "must find call"); | |
| 1482 if (iter.type() == relocInfo::static_call_type) { | |
| 1483 is_static_call = true; | |
| 1484 } else { | |
| 1485 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1486 iter.type() == relocInfo::opt_virtual_call_type | |
| 1487 , "unexpected relocInfo. type"); | |
| 1488 } | |
| 1489 } else { | |
| 1490 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1491 } | |
| 1492 | |
| 1493 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1494 // than directly setting it to the new destination, since resolving of calls | |
| 1495 // is always done through the same code path. (experience shows that it | |
| 1496 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1497 // to a wrong method). It should not be performance critical, since the | |
| 1498 // resolve is only done once. | |
| 1499 | |
| 1500 MutexLocker ml(CompiledIC_lock); | |
| 1501 // | |
| 1502 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1503 // as it is a waste of time | |
| 1504 // | |
| 1505 if (caller_nm->is_in_use()) { | |
| 1506 if (is_static_call) { | |
| 1507 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1508 ssc->set_to_clean(); | |
| 1509 } else { | |
| 1510 // compiled, dispatched call (which used to call an interpreted method) | |
| 1511 CompiledIC* inline_cache = CompiledIC_at(call_addr); | |
| 1512 inline_cache->set_to_clean(); | |
| 1513 } | |
| 1514 } | |
| 1515 } | |
| 1516 | |
| 1517 } | |
| 1518 | |
| 1519 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1520 | |
| 1521 | |
| 1522 #ifndef PRODUCT | |
| 1523 Atomic::inc(&_wrong_method_ctr); | |
| 1524 | |
| 1525 if (TraceCallFixup) { | |
| 1526 ResourceMark rm(thread); | |
| 1527 tty->print("handle_wrong_method reresolving call to"); | |
| 1528 callee_method->print_short_name(tty); | |
| 1529 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1530 } | |
| 1531 #endif | |
| 1532 | |
| 1533 return callee_method; | |
| 1534 } | |
| 1535 | |
| 1536 // --------------------------------------------------------------------------- | |
| 1537 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1538 // we were called by a compiled method. However we could have lost a race | |
| 1539 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1540 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1541 // so he no longer calls into the interpreter. |
| 1542 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(methodOopDesc* method, address caller_pc)) | |
| 1543 methodOop moop(method); | |
| 1544 | |
| 1545 address entry_point = moop->from_compiled_entry(); | |
| 1546 | |
| 1547 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1548 // been resolved yet, in which case this function will be called from | |
| 1549 // an nmethod that has been patched for deopt and we can ignore the | |
| 1550 // request for a fixup. | |
| 1551 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1552 // is now back to the i2c in that case we don't need to patch and if | |
| 1553 // we did we'd leap into space because the callsite needs to use | |
| 1554 // "to interpreter" stub in order to load up the methodOop. Don't | |
| 1555 // ask me how I know this... | |
| 1556 | |
| 1557 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1558 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1559 return; | |
| 1560 } | |
| 1561 | |
| 1562 // The check above makes sure this is a nmethod. | |
| 1563 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1564 assert(nm, "must be"); | |
| 1565 | |
| 1566 // Don't fixup MethodHandle call sites as c2i/i2c adapters are used | |
| 1567 // to implement MethodHandle actions. | |
| 1568 if (nm->is_method_handle_return(caller_pc)) { | |
| 0 | 1569 return; |
| 1570 } | |
| 1571 | |
| 1572 // There is a benign race here. We could be attempting to patch to a compiled | |
| 1573 // entry point at the same time the callee is being deoptimized. If that is | |
| 1574 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1575 // call site with the same old data. clear_code will set code() to NULL | |
| 1576 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1577 // to patch. If we hit the window where the callee has a c2i in the | |
| 1578 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1579 // and patch the code with the same old data. Asi es la vida. | |
| 1580 | |
| 1581 if (moop->code() == NULL) return; | |
| 1582 | |
| 1205 | 1583 if (nm->is_in_use()) { |
| 0 | 1584 |
| 1585 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1586 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1587 if (NativeCall::is_call_before(caller_pc + frame::pc_return_offset)) { | |
| 1588 NativeCall *call = nativeCall_before(caller_pc + frame::pc_return_offset); | |
| 1589 // | |
| 1590 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1591 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1592 // see compiled code and attempt to patch the site by calling us. This would | |
| 1593 // then incorrectly convert the call site to optimized and its downhill from | |
| 1594 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1595 // just made a call site that could be megamorphic into a monomorphic site | |
| 1596 // for the rest of its life! Just another racing bug in the life of | |
| 1597 // fixup_callers_callsite ... | |
| 1598 // | |
|
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1599 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1600 iter.next(); |
| 1601 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1602 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1603 if ( typ != relocInfo::static_call_type && | |
| 1604 typ != relocInfo::opt_virtual_call_type && | |
| 1605 typ != relocInfo::static_stub_type) { | |
| 1606 return; | |
| 1607 } | |
| 1608 address destination = call->destination(); | |
| 1609 if (destination != entry_point) { | |
| 1610 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1611 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1612 if (callee == cb || callee->is_adapter_blob()) { | |
| 1613 // static call or optimized virtual | |
| 1614 if (TraceCallFixup) { | |
| 1204 | 1615 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1616 moop->print_short_name(tty); |
| 1617 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1618 } | |
| 1619 call->set_destination_mt_safe(entry_point); | |
| 1620 } else { | |
| 1621 if (TraceCallFixup) { | |
| 1622 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1623 moop->print_short_name(tty); | |
| 1624 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1625 } | |
| 1626 // assert is too strong could also be resolve destinations. | |
| 1627 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1628 } | |
| 1629 } else { | |
| 1630 if (TraceCallFixup) { | |
| 1204 | 1631 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1632 moop->print_short_name(tty); |
| 1633 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1634 } | |
| 1635 } | |
| 1636 } | |
| 1637 } | |
| 1638 | |
| 1639 IRT_END | |
| 1640 | |
| 1641 | |
| 1642 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1643 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1644 oopDesc* dest, jint dest_pos, | |
| 1645 jint length, | |
| 1646 JavaThread* thread)) { | |
| 1647 #ifndef PRODUCT | |
| 1648 _slow_array_copy_ctr++; | |
| 1649 #endif | |
| 1650 // Check if we have null pointers | |
| 1651 if (src == NULL || dest == NULL) { | |
| 1652 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1653 } | |
| 1654 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1655 // even though the copy_array API also performs dynamic checks to ensure | |
| 1656 // that src and dest are truly arrays (and are conformable). | |
| 1657 // The copy_array mechanism is awkward and could be removed, but | |
| 1658 // the compilers don't call this function except as a last resort, | |
| 1659 // so it probably doesn't matter. | |
| 1660 Klass::cast(src->klass())->copy_array((arrayOopDesc*)src, src_pos, | |
| 1661 (arrayOopDesc*)dest, dest_pos, | |
| 1662 length, thread); | |
| 1663 } | |
| 1664 JRT_END | |
| 1665 | |
| 1666 char* SharedRuntime::generate_class_cast_message( | |
| 1667 JavaThread* thread, const char* objName) { | |
| 1668 | |
| 1669 // Get target class name from the checkcast instruction | |
| 1670 vframeStream vfst(thread, true); | |
| 1671 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1672 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 0 | 1673 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at( |
| 2142 | 1674 cc.index(), thread)); |
| 0 | 1675 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1676 } | |
| 1677 | |
| 710 | 1678 char* SharedRuntime::generate_wrong_method_type_message(JavaThread* thread, |
| 1679 oopDesc* required, | |
| 1680 oopDesc* actual) { | |
|
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1681 if (TraceMethodHandles) { |
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1682 tty->print_cr("WrongMethodType thread="PTR_FORMAT" req="PTR_FORMAT" act="PTR_FORMAT"", |
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1683 thread, required, actual); |
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1684 } |
| 710 | 1685 assert(EnableMethodHandles, ""); |
| 1686 oop singleKlass = wrong_method_type_is_for_single_argument(thread, required); | |
|
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1687 char* message = NULL; |
| 710 | 1688 if (singleKlass != NULL) { |
| 1689 const char* objName = "argument or return value"; | |
| 1690 if (actual != NULL) { | |
| 1691 // be flexible about the junk passed in: | |
| 1692 klassOop ak = (actual->is_klass() | |
| 1693 ? (klassOop)actual | |
| 1694 : actual->klass()); | |
| 1695 objName = Klass::cast(ak)->external_name(); | |
| 1696 } | |
| 1697 Klass* targetKlass = Klass::cast(required->is_klass() | |
| 1698 ? (klassOop)required | |
| 1699 : java_lang_Class::as_klassOop(required)); | |
|
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1700 message = generate_class_cast_message(objName, targetKlass->external_name()); |
| 710 | 1701 } else { |
| 1702 // %%% need to get the MethodType string, without messing around too much | |
| 1703 // Get a signature from the invoke instruction | |
| 1704 const char* mhName = "method handle"; | |
| 1705 const char* targetType = "the required signature"; | |
| 1706 vframeStream vfst(thread, true); | |
| 1707 if (!vfst.at_end()) { | |
| 2142 | 1708 Bytecode_invoke call(vfst.method(), vfst.bci()); |
| 710 | 1709 methodHandle target; |
| 1710 { | |
| 1711 EXCEPTION_MARK; | |
| 2142 | 1712 target = call.static_target(THREAD); |
| 710 | 1713 if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; } |
| 1714 } | |
| 1715 if (target.not_null() | |
| 1716 && target->is_method_handle_invoke() | |
| 1717 && required == target->method_handle_type()) { | |
| 1718 targetType = target->signature()->as_C_string(); | |
| 1719 } | |
| 1720 } | |
| 1721 klassOop kignore; int fignore; | |
| 1722 methodOop actual_method = MethodHandles::decode_method(actual, | |
| 1723 kignore, fignore); | |
| 1724 if (actual_method != NULL) { | |
|
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1725 if (methodOopDesc::is_method_handle_invoke_name(actual_method->name())) |
| 710 | 1726 mhName = "$"; |
| 1727 else | |
| 1728 mhName = actual_method->signature()->as_C_string(); | |
| 1729 if (mhName[0] == '$') | |
| 1730 mhName = actual_method->signature()->as_C_string(); | |
| 1731 } | |
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1732 message = generate_class_cast_message(mhName, targetType, |
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1733 " cannot be called as "); |
| 710 | 1734 } |
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1735 if (TraceMethodHandles) { |
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1736 tty->print_cr("WrongMethodType => message=%s", message); |
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1737 } |
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1738 return message; |
| 710 | 1739 } |
| 1740 | |
| 1741 oop SharedRuntime::wrong_method_type_is_for_single_argument(JavaThread* thr, | |
| 1742 oopDesc* required) { | |
| 1743 if (required == NULL) return NULL; | |
| 1142 | 1744 if (required->klass() == SystemDictionary::Class_klass()) |
| 710 | 1745 return required; |
| 1746 if (required->is_klass()) | |
| 1747 return Klass::cast(klassOop(required))->java_mirror(); | |
| 1748 return NULL; | |
| 1749 } | |
| 1750 | |
| 1751 | |
| 0 | 1752 char* SharedRuntime::generate_class_cast_message( |
| 710 | 1753 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1754 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1755 | |
| 53 | 1756 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1757 if (NULL == message) { |
| 53 | 1758 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1759 message = const_cast<char*>(objName); |
| 1760 } else { | |
| 1761 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1762 } | |
| 1763 return message; | |
| 1764 } | |
| 1765 | |
| 1766 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1767 (void) JavaThread::current()->reguard_stack(); | |
| 1768 JRT_END | |
| 1769 | |
| 1770 | |
| 1771 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1772 #ifndef PRODUCT | |
| 1773 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1774 #endif | |
| 1775 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1776 oop obj(_obj); | |
| 1777 #ifndef PRODUCT | |
| 1778 _monitor_enter_ctr++; // monitor enter slow | |
| 1779 #endif | |
| 1780 if (PrintBiasedLockingStatistics) { | |
| 1781 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1782 } | |
| 1783 Handle h_obj(THREAD, obj); | |
| 1784 if (UseBiasedLocking) { | |
| 1785 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1786 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1787 } else { | |
| 1788 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1789 } | |
| 1790 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1791 JRT_END | |
| 1792 | |
| 1793 #ifndef PRODUCT | |
| 1794 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1795 #endif | |
| 1796 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1797 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1798 oop obj(_obj); | |
| 1799 #ifndef PRODUCT | |
| 1800 _monitor_exit_ctr++; // monitor exit slow | |
| 1801 #endif | |
| 1802 Thread* THREAD = JavaThread::current(); | |
| 1803 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1804 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1805 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1806 #undef MIGHT_HAVE_PENDING | |
| 1807 #ifdef MIGHT_HAVE_PENDING | |
| 1808 // Save and restore any pending_exception around the exception mark. | |
| 1809 // While the slow_exit must not throw an exception, we could come into | |
| 1810 // this routine with one set. | |
| 1811 oop pending_excep = NULL; | |
| 1812 const char* pending_file; | |
| 1813 int pending_line; | |
| 1814 if (HAS_PENDING_EXCEPTION) { | |
| 1815 pending_excep = PENDING_EXCEPTION; | |
| 1816 pending_file = THREAD->exception_file(); | |
| 1817 pending_line = THREAD->exception_line(); | |
| 1818 CLEAR_PENDING_EXCEPTION; | |
| 1819 } | |
| 1820 #endif /* MIGHT_HAVE_PENDING */ | |
| 1821 | |
| 1822 { | |
| 1823 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1824 EXCEPTION_MARK; | |
| 1825 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1826 } | |
| 1827 | |
| 1828 #ifdef MIGHT_HAVE_PENDING | |
| 1829 if (pending_excep != NULL) { | |
| 1830 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1831 } | |
| 1832 #endif /* MIGHT_HAVE_PENDING */ | |
| 1833 JRT_END | |
| 1834 | |
| 1835 #ifndef PRODUCT | |
| 1836 | |
| 1837 void SharedRuntime::print_statistics() { | |
| 1838 ttyLocker ttyl; | |
| 1839 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1840 | |
| 1841 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1842 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1843 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1844 | |
| 1845 SharedRuntime::print_ic_miss_histogram(); | |
| 1846 | |
| 1847 if (CountRemovableExceptions) { | |
| 1848 if (_nof_removable_exceptions > 0) { | |
| 1849 Unimplemented(); // this counter is not yet incremented | |
| 1850 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1851 } | |
| 1852 } | |
| 1853 | |
| 1854 // Dump the JRT_ENTRY counters | |
| 1855 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 1856 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 1857 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 1858 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 1859 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 1860 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 1861 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 1862 | |
| 1863 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 1864 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 1865 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 1866 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 1867 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 1868 | |
| 1869 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 1870 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 1871 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 1872 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 1873 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 1874 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 1875 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 1876 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 1877 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 1878 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 1879 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 1880 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 1881 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 1882 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 1883 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 1884 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 1885 | |
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1887 |
| 0 | 1888 if (xtty != NULL) xtty->tail("statistics"); |
| 1889 } | |
| 1890 | |
| 1891 inline double percent(int x, int y) { | |
| 1892 return 100.0 * x / MAX2(y, 1); | |
| 1893 } | |
| 1894 | |
| 1895 class MethodArityHistogram { | |
| 1896 public: | |
| 1897 enum { MAX_ARITY = 256 }; | |
| 1898 private: | |
| 1899 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 1900 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 1901 static int _max_arity; // max. arity seen | |
| 1902 static int _max_size; // max. arg size seen | |
| 1903 | |
| 1904 static void add_method_to_histogram(nmethod* nm) { | |
| 1905 methodOop m = nm->method(); | |
| 1906 ArgumentCount args(m->signature()); | |
| 1907 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 1908 int argsize = m->size_of_parameters(); | |
| 1909 arity = MIN2(arity, MAX_ARITY-1); | |
| 1910 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 1911 int count = nm->method()->compiled_invocation_count(); | |
| 1912 _arity_histogram[arity] += count; | |
| 1913 _size_histogram[argsize] += count; | |
| 1914 _max_arity = MAX2(_max_arity, arity); | |
| 1915 _max_size = MAX2(_max_size, argsize); | |
| 1916 } | |
| 1917 | |
| 1918 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 1919 const int N = MIN2(5, n); | |
| 1920 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 1921 double sum = 0; | |
| 1922 double weighted_sum = 0; | |
| 1923 int i; | |
| 1924 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 1925 double rest = sum; | |
| 1926 double percent = sum / 100; | |
| 1927 for (i = 0; i <= N; i++) { | |
| 1928 rest -= histo[i]; | |
| 1929 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 1930 } | |
| 1931 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 1932 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 1933 } | |
| 1934 | |
| 1935 void print_histogram() { | |
| 1936 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 1937 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 1938 tty->print_cr("\nSame for parameter size (in words):"); | |
| 1939 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 1940 tty->cr(); | |
| 1941 } | |
| 1942 | |
| 1943 public: | |
| 1944 MethodArityHistogram() { | |
| 1945 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 1946 _max_arity = _max_size = 0; | |
| 1947 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 1948 CodeCache::nmethods_do(add_method_to_histogram); | |
| 1949 print_histogram(); | |
| 1950 } | |
| 1951 }; | |
| 1952 | |
| 1953 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 1954 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 1955 int MethodArityHistogram::_max_arity; | |
| 1956 int MethodArityHistogram::_max_size; | |
| 1957 | |
| 1958 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 1959 tty->print_cr("Calls from compiled code:"); | |
| 1960 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 1961 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 1962 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 1963 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 1964 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 1965 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 1966 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 1967 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 1968 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 1969 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 1970 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 1971 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 1972 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 1973 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 1974 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 1975 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 1976 tty->cr(); | |
| 1977 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 1978 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 1979 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 1980 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 1981 tty->cr(); | |
| 1982 | |
| 1983 MethodArityHistogram h; | |
| 1984 } | |
| 1985 #endif | |
| 1986 | |
| 1987 | |
|
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1988 // A simple wrapper class around the calling convention information |
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1989 // that allows sharing of adapters for the same calling convention. |
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1990 class AdapterFingerPrint : public CHeapObj { |
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1991 private: |
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1992 union { |
|
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1993 int _compact[3]; |
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1994 int* _fingerprint; |
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1995 } _value; |
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1996 int _length; // A negative length indicates the fingerprint is in the compact form, |
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1997 // Otherwise _value._fingerprint is the array. |
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1998 |
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1999 // Remap BasicTypes that are handled equivalently by the adapters. |
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2000 // These are correct for the current system but someday it might be |
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2001 // necessary to make this mapping platform dependent. |
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2002 static BasicType adapter_encoding(BasicType in) { |
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2003 assert((~0xf & in) == 0, "must fit in 4 bits"); |
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2004 switch(in) { |
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2005 case T_BOOLEAN: |
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2006 case T_BYTE: |
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2007 case T_SHORT: |
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2008 case T_CHAR: |
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2009 // There are all promoted to T_INT in the calling convention |
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2010 return T_INT; |
|
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2011 |
|
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2012 case T_OBJECT: |
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|
2013 case T_ARRAY: |
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|
2014 #ifdef _LP64 |
| 1506 | 2015 return T_LONG; |
|
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2016 #else |
| 1506 | 2017 return T_INT; |
|
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2018 #endif |
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|
2019 |
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2020 case T_INT: |
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|
2021 case T_LONG: |
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2022 case T_FLOAT: |
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2023 case T_DOUBLE: |
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|
2024 case T_VOID: |
|
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|
2025 return in; |
|
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|
2026 |
|
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|
2027 default: |
|
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|
2028 ShouldNotReachHere(); |
|
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|
2029 return T_CONFLICT; |
|
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|
2030 } |
|
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|
2031 } |
|
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|
2032 |
|
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|
2033 public: |
|
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|
2034 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
|
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|
2035 // The fingerprint is based on the BasicType signature encoded |
|
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|
2036 // into an array of ints with four entries per int. |
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|
2037 int* ptr; |
|
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|
2038 int len = (total_args_passed + 3) >> 2; |
|
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2039 if (len <= (int)(sizeof(_value._compact) / sizeof(int))) { |
|
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2040 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
|
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2041 // Storing the signature encoded as signed chars hits about 98% |
|
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|
2042 // of the time. |
|
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|
2043 _length = -len; |
|
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|
2044 ptr = _value._compact; |
|
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|
2045 } else { |
|
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|
2046 _length = len; |
|
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|
2047 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length); |
|
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|
2048 ptr = _value._fingerprint; |
|
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|
2049 } |
|
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|
2050 |
|
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|
2051 // Now pack the BasicTypes with 4 per int |
|
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|
2052 int sig_index = 0; |
|
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|
2053 for (int index = 0; index < len; index++) { |
|
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|
2054 int value = 0; |
|
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|
2055 for (int byte = 0; byte < 4; byte++) { |
|
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2056 if (sig_index < total_args_passed) { |
|
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|
2057 value = (value << 4) | adapter_encoding(sig_bt[sig_index++]); |
|
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|
2058 } |
|
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|
2059 } |
|
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|
2060 ptr[index] = value; |
|
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|
2061 } |
|
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2062 } |
|
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|
2063 |
|
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|
2064 ~AdapterFingerPrint() { |
|
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|
2065 if (_length > 0) { |
|
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|
2066 FREE_C_HEAP_ARRAY(int, _value._fingerprint); |
|
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|
2067 } |
|
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|
2068 } |
|
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|
2069 |
|
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|
2070 int value(int index) { |
|
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|
2071 if (_length < 0) { |
|
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|
2072 return _value._compact[index]; |
|
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|
2073 } |
|
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|
2074 return _value._fingerprint[index]; |
|
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|
2075 } |
|
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|
2076 int length() { |
|
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|
2077 if (_length < 0) return -_length; |
|
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|
2078 return _length; |
|
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|
2079 } |
|
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|
2080 |
|
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|
2081 bool is_compact() { |
|
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|
2082 return _length <= 0; |
|
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|
2083 } |
|
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|
2084 |
|
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|
2085 unsigned int compute_hash() { |
|
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|
2086 int hash = 0; |
|
1187
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|
2087 for (int i = 0; i < length(); i++) { |
|
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|
2088 int v = value(i); |
|
1187
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|
2089 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
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|
2090 } |
|
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|
2091 return (unsigned int)hash; |
|
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|
2092 } |
|
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|
2093 |
|
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|
2094 const char* as_string() { |
|
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|
2095 stringStream st; |
|
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|
2096 for (int i = 0; i < length(); i++) { |
|
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|
2097 st.print(PTR_FORMAT, value(i)); |
|
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|
2098 } |
|
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|
2099 return st.as_string(); |
|
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|
2100 } |
|
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|
2101 |
|
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|
2102 bool equals(AdapterFingerPrint* other) { |
|
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|
2103 if (other->_length != _length) { |
|
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|
2104 return false; |
|
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|
2105 } |
|
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|
2106 if (_length < 0) { |
|
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|
2107 return _value._compact[0] == other->_value._compact[0] && |
|
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|
2108 _value._compact[1] == other->_value._compact[1] && |
|
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|
2109 _value._compact[2] == other->_value._compact[2]; |
|
1187
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|
2110 } else { |
|
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|
2111 for (int i = 0; i < _length; i++) { |
|
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|
2112 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
|
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|
2113 return false; |
|
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changeset
|
2114 } |
|
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never
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diff
changeset
|
2115 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2116 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2117 return true; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
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|
2118 } |
|
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6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2119 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2120 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2121 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2122 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2123 class AdapterHandlerTable : public BasicHashtable { |
|
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6911204: generated adapters with large signatures can fill up the code cache
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|
2124 friend class AdapterHandlerTableIterator; |
|
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never
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diff
changeset
|
2125 |
|
cf0685d550f1
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diff
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|
2126 private: |
|
cf0685d550f1
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never
parents:
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diff
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|
2127 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
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|
2128 #ifndef PRODUCT |
|
1187
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|
2129 static int _lookups; // number of calls to lookup |
|
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|
2130 static int _buckets; // number of buckets checked |
|
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|
2131 static int _equals; // number of buckets checked with matching hash |
|
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|
2132 static int _hits; // number of successful lookups |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2133 static int _compact; // number of equals calls with compact signature |
|
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|
2134 #endif |
|
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diff
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|
2135 |
|
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|
2136 AdapterHandlerEntry* bucket(int i) { |
|
cf0685d550f1
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|
2137 return (AdapterHandlerEntry*)BasicHashtable::bucket(i); |
|
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|
2138 } |
|
cf0685d550f1
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diff
changeset
|
2139 |
|
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|
2140 public: |
|
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diff
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|
2141 AdapterHandlerTable() |
|
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|
2142 : BasicHashtable(293, sizeof(AdapterHandlerEntry)) { } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2143 |
|
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|
2144 // Create a new entry suitable for insertion in the table |
|
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|
2145 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
|
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|
2146 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable::new_entry(fingerprint->compute_hash()); |
|
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|
2147 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2148 return entry; |
|
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|
2149 } |
|
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never
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diff
changeset
|
2150 |
|
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changeset
|
2151 // Insert an entry into the table |
|
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|
2152 void add(AdapterHandlerEntry* entry) { |
|
cf0685d550f1
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|
2153 int index = hash_to_index(entry->hash()); |
|
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changeset
|
2154 add_entry(index, entry); |
|
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never
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|
2155 } |
|
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never
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diff
changeset
|
2156 |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2157 void free_entry(AdapterHandlerEntry* entry) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2158 entry->deallocate(); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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diff
changeset
|
2159 BasicHashtable::free_entry(entry); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2160 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2161 |
|
1187
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changeset
|
2162 // Find a entry with the same fingerprint if it exists |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2163 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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|
2164 NOT_PRODUCT(_lookups++); |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2165 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
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never
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|
2166 unsigned int hash = fp.compute_hash(); |
|
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|
2167 int index = hash_to_index(hash); |
|
cf0685d550f1
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|
2168 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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diff
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|
2169 NOT_PRODUCT(_buckets++); |
|
1187
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|
2170 if (e->hash() == hash) { |
|
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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diff
changeset
|
2171 NOT_PRODUCT(_equals++); |
|
1187
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changeset
|
2172 if (fp.equals(e->fingerprint())) { |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2173 #ifndef PRODUCT |
|
1187
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changeset
|
2174 if (fp.is_compact()) _compact++; |
|
cf0685d550f1
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diff
changeset
|
2175 _hits++; |
|
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never
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diff
changeset
|
2176 #endif |
|
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never
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diff
changeset
|
2177 return e; |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2178 } |
|
cf0685d550f1
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never
parents:
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diff
changeset
|
2179 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2180 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2181 return NULL; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2182 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2183 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2184 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2185 void print_statistics() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2186 ResourceMark rm; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2187 int longest = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2188 int empty = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2189 int total = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2190 int nonempty = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2191 for (int index = 0; index < table_size(); index++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2192 int count = 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2193 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2194 count++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2195 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2196 if (count != 0) nonempty++; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2197 if (count == 0) empty++; |
|
cf0685d550f1
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never
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diff
changeset
|
2198 if (count > longest) longest = count; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2199 total += count; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2200 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2201 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2202 empty, longest, total, total / (double)nonempty); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2203 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2204 _lookups, _buckets, _equals, _hits, _compact); |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2205 } |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2206 #endif |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2207 }; |
|
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 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2210 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2211 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2212 int AdapterHandlerTable::_lookups; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2213 int AdapterHandlerTable::_buckets; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2214 int AdapterHandlerTable::_equals; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2215 int AdapterHandlerTable::_hits; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2216 int AdapterHandlerTable::_compact; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2217 |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2218 #endif |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2219 |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2220 class AdapterHandlerTableIterator : public StackObj { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2221 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2222 AdapterHandlerTable* _table; |
|
cf0685d550f1
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never
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diff
changeset
|
2223 int _index; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2224 AdapterHandlerEntry* _current; |
|
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 void scan() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2227 while (_index < _table->table_size()) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2228 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2229 _index++; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2230 if (a != NULL) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2231 _current = a; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2232 return; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2233 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2234 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2235 } |
|
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
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1142
diff
changeset
|
2237 public: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2238 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2239 scan(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2240 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2241 bool has_next() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2242 return _current != NULL; |
|
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2243 } |
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2244 AdapterHandlerEntry* next() { |
|
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2245 if (_current != NULL) { |
|
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2246 AdapterHandlerEntry* result = _current; |
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2247 _current = _current->next(); |
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2248 if (_current == NULL) scan(); |
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|
2249 return result; |
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2250 } else { |
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2251 return NULL; |
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2252 } |
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2253 } |
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2254 }; |
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2255 |
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2256 |
| 0 | 2257 // --------------------------------------------------------------------------- |
| 2258 // Implementation of AdapterHandlerLibrary | |
|
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2259 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
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2260 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2261 const int AdapterHandlerLibrary_size = 16*K; |
|
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2262 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
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2263 |
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2264 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
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2265 // Should be called only when AdapterHandlerLibrary_lock is active. |
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2266 if (_buffer == NULL) // Initialize lazily |
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2267 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2268 return _buffer; |
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2269 } |
| 0 | 2270 |
| 2271 void AdapterHandlerLibrary::initialize() { | |
|
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2272 if (_adapters != NULL) return; |
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2273 _adapters = new AdapterHandlerTable(); |
| 0 | 2274 |
| 2275 // Create a special handler for abstract methods. Abstract methods | |
| 2276 // are never compiled so an i2c entry is somewhat meaningless, but | |
| 2277 // fill it in with something appropriate just in case. Pass handle | |
| 2278 // wrong method for the c2i transitions. | |
| 2279 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
|
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2280 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
|
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2281 StubRoutines::throw_AbstractMethodError_entry(), |
|
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2282 wrong_method, wrong_method); |
| 0 | 2283 } |
| 2284 | |
|
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2285 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
|
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2286 address i2c_entry, |
|
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2287 address c2i_entry, |
|
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2288 address c2i_unverified_entry) { |
|
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2289 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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2290 } |
|
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2291 |
|
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2292 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
|
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2293 // Use customized signature handler. Need to lock around updates to |
|
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2294 // the AdapterHandlerTable (it is not safe for concurrent readers |
|
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2295 // and a single writer: this could be fixed if it becomes a |
|
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2296 // problem). |
| 0 | 2297 |
| 2298 // Get the address of the ic_miss handlers before we grab the | |
| 2299 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2300 // was caused by the initialization of the stubs happening | |
| 2301 // while we held the lock and then notifying jvmti while | |
| 2302 // holding it. This just forces the initialization to be a little | |
| 2303 // earlier. | |
| 2304 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2305 assert(ic_miss != NULL, "must have handler"); | |
| 2306 | |
|
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2307 ResourceMark rm; |
|
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2308 |
| 1748 | 2309 NOT_PRODUCT(int insts_size); |
|
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2310 AdapterBlob* B = NULL; |
|
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2311 AdapterHandlerEntry* entry = NULL; |
|
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2312 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2313 { |
| 2314 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2315 // make sure data structure is initialized | |
| 2316 initialize(); | |
| 2317 | |
| 2318 if (method->is_abstract()) { | |
|
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2319 return _abstract_method_handler; |
| 0 | 2320 } |
| 2321 | |
|
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2322 // Fill in the signature array, for the calling-convention call. |
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2323 int total_args_passed = method->size_of_parameters(); // All args on stack |
|
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2324 |
|
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2325 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
|
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2326 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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2327 int i = 0; |
|
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|
2328 if (!method->is_static()) // Pass in receiver first |
|
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2329 sig_bt[i++] = T_OBJECT; |
|
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2330 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
|
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2331 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
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2332 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
|
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|
2333 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
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2334 } |
|
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2335 assert(i == total_args_passed, ""); |
|
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2336 |
|
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2337 // Lookup method signature's fingerprint |
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2338 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
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2339 |
|
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|
2340 #ifdef ASSERT |
|
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|
2341 AdapterHandlerEntry* shared_entry = NULL; |
|
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2342 if (VerifyAdapterSharing && entry != NULL) { |
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|
2343 shared_entry = entry; |
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|
2344 entry = NULL; |
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|
2345 } |
|
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|
2346 #endif |
|
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2347 |
|
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2348 if (entry != NULL) { |
|
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|
2349 return entry; |
| 0 | 2350 } |
| 2351 | |
|
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2352 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
|
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|
2353 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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2354 |
|
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2355 // Make a C heap allocated version of the fingerprint to store in the adapter |
|
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2356 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
|
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2357 |
| 0 | 2358 // Create I2C & C2I handlers |
| 2359 | |
|
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2360 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2361 if (buf != NULL) { |
| 1748 | 2362 CodeBuffer buffer(buf); |
|
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2363 short buffer_locs[20]; |
|
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2364 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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2365 sizeof(buffer_locs)/sizeof(relocInfo)); |
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2366 MacroAssembler _masm(&buffer); |
|
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2367 |
|
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2368 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
|
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2369 total_args_passed, |
|
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2370 comp_args_on_stack, |
|
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|
2371 sig_bt, |
|
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2372 regs, |
|
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|
2373 fingerprint); |
| 0 | 2374 |
|
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|
2375 #ifdef ASSERT |
|
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2376 if (VerifyAdapterSharing) { |
|
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|
2377 if (shared_entry != NULL) { |
| 1748 | 2378 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
|
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2379 "code must match"); |
|
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2380 // Release the one just created and return the original |
|
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|
2381 _adapters->free_entry(entry); |
|
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|
2382 return shared_entry; |
|
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|
2383 } else { |
| 1748 | 2384 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
|
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|
2385 } |
|
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|
2386 } |
|
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|
2387 #endif |
|
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|
2388 |
|
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2389 B = AdapterBlob::create(&buffer); |
| 1748 | 2390 NOT_PRODUCT(insts_size = buffer.insts_size()); |
|
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2391 } |
| 28 | 2392 if (B == NULL) { |
| 2393 // CodeCache is full, disable compilation | |
| 2394 // Ought to log this but compile log is only per compile thread | |
| 2395 // and we're some non descript Java thread. | |
| 1202 | 2396 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2397 CompileBroker::handle_full_code_cache(); | |
|
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2398 return NULL; // Out of CodeCache space |
| 28 | 2399 } |
| 1748 | 2400 entry->relocate(B->content_begin()); |
| 0 | 2401 #ifndef PRODUCT |
| 2402 // debugging suppport | |
| 2403 if (PrintAdapterHandlers) { | |
| 2404 tty->cr(); | |
|
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2405 tty->print_cr("i2c argument handler #%d for: %s %s (fingerprint = %s, %d bytes generated)", |
|
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|
2406 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
| 1748 | 2407 method->signature()->as_C_string(), fingerprint->as_string(), insts_size ); |
| 0 | 2408 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
| 1748 | 2409 Disassembler::decode(entry->get_i2c_entry(), entry->get_i2c_entry() + insts_size); |
| 0 | 2410 } |
| 2411 #endif | |
| 2412 | |
|
1187
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diff
changeset
|
2413 _adapters->add(entry); |
| 0 | 2414 } |
| 2415 // Outside of the lock | |
| 2416 if (B != NULL) { | |
| 2417 char blob_id[256]; | |
| 2418 jio_snprintf(blob_id, | |
| 2419 sizeof(blob_id), | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2420 "%s(%s)@" PTR_FORMAT, |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
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1295
diff
changeset
|
2421 B->name(), |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2422 fingerprint->as_string(), |
| 1748 | 2423 B->content_begin()); |
| 2424 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
| 0 | 2425 |
| 2426 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 1748 | 2427 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
| 0 | 2428 } |
| 2429 } | |
|
1187
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6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2430 return entry; |
| 0 | 2431 } |
| 2432 | |
| 2433 void AdapterHandlerEntry::relocate(address new_base) { | |
| 2434 ptrdiff_t delta = new_base - _i2c_entry; | |
| 2435 _i2c_entry += delta; | |
| 2436 _c2i_entry += delta; | |
| 2437 _c2i_unverified_entry += delta; | |
| 2438 } | |
| 2439 | |
|
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2440 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2441 void AdapterHandlerEntry::deallocate() { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2442 delete _fingerprint; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2443 #ifdef ASSERT |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2444 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2445 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2446 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2447 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2448 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2449 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2450 #ifdef ASSERT |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2451 // Capture the code before relocation so that it can be compared |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2452 // against other versions. If the code is captured after relocation |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2453 // then relative instructions won't be equivalent. |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2454 void AdapterHandlerEntry::save_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
|
2455 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2456 _code_length = length; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2457 memcpy(_saved_code, buffer, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2458 _total_args_passed = total_args_passed; |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2459 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2460 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2461 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2462 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2463 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2464 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
|
2465 if (length != _code_length) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2466 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2467 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2468 for (int i = 0; i < length; i++) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2469 if (buffer[i] != _saved_code[i]) { |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2470 return false; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2471 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2472 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2473 return true; |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2474 } |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2475 #endif |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2476 |
|
74c848d437ab
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diff
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|
2477 |
| 0 | 2478 // Create a native wrapper for this native method. The wrapper converts the |
| 2479 // java compiled calling convention to the native convention, handlizes | |
| 2480 // arguments, and transitions to native. On return from the native we transition | |
| 2481 // back to java blocking if a safepoint is in progress. | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2482 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
| 0 | 2483 ResourceMark rm; |
| 2484 nmethod* nm = NULL; | |
| 2485 | |
| 2486 assert(method->has_native_function(), "must have something valid to call!"); | |
| 2487 | |
| 2488 { | |
| 2489 // perform the work while holding the lock, but perform any printing outside the lock | |
| 2490 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2491 // See if somebody beat us to it | |
| 2492 nm = method->code(); | |
| 2493 if (nm) { | |
| 2494 return nm; | |
| 2495 } | |
| 2496 | |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2497 ResourceMark rm; |
| 0 | 2498 |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2499 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
|
2500 if (buf != NULL) { |
| 1748 | 2501 CodeBuffer buffer(buf); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2502 double locs_buf[20]; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2503 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
|
2504 MacroAssembler _masm(&buffer); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2505 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2506 // Fill in the signature array, for the calling-convention call. |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2507 int total_args_passed = method->size_of_parameters(); |
| 0 | 2508 |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2509 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2510 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair,total_args_passed); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2511 int i=0; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2512 if( !method->is_static() ) // Pass in receiver first |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2513 sig_bt[i++] = T_OBJECT; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2514 SignatureStream ss(method->signature()); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2515 for( ; !ss.at_return_type(); ss.next()) { |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2516 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
|
2517 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
|
2518 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
|
2519 } |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2520 assert( i==total_args_passed, "" ); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2521 BasicType ret_type = ss.type(); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2522 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2523 // Now get the compiled-Java layout as input arguments |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2524 int comp_args_on_stack; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2525 comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2526 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2527 // Generate the compiled-to-native wrapper code |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2528 nm = SharedRuntime::generate_native_wrapper(&_masm, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2529 method, |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2530 compile_id, |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2531 total_args_passed, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2532 comp_args_on_stack, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2533 sig_bt,regs, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2534 ret_type); |
| 0 | 2535 } |
| 2536 } | |
| 2537 | |
| 2538 // Must unlock before calling set_code | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2539 |
| 0 | 2540 // Install the generated code. |
| 2541 if (nm != NULL) { | |
|
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2542 if (PrintCompilation) { |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2543 ttyLocker ttyl; |
|
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2544 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
|
2545 } |
| 0 | 2546 method->set_code(method, nm); |
| 2547 nm->post_compiled_method_load_event(); | |
| 2548 } else { | |
| 2549 // CodeCache is full, disable compilation | |
| 1202 | 2550 CompileBroker::handle_full_code_cache(); |
| 0 | 2551 } |
| 2552 return nm; | |
| 2553 } | |
| 2554 | |
|
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2555 #ifdef HAVE_DTRACE_H |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2556 // Create a dtrace nmethod for this method. The wrapper converts the |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2557 // java compiled calling convention to the native convention, makes a dummy call |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2558 // (actually nops for the size of the call instruction, which become a trap if |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2559 // probe is enabled). The returns to the caller. Since this all looks like a |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2560 // leaf no thread transition is needed. |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2561 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2562 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2563 ResourceMark rm; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2564 nmethod* nm = NULL; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2565 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2566 if (PrintCompilation) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2567 ttyLocker ttyl; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2568 tty->print("--- n%s "); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2569 method->print_short_name(tty); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2570 if (method->is_static()) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2571 tty->print(" (static)"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2572 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2573 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2574 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2575 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2576 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2577 // perform the work while holding the lock, but perform any printing |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2578 // outside the lock |
|
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2579 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
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2580 // See if somebody beat us to it |
|
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2581 nm = method->code(); |
|
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2582 if (nm) { |
|
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2583 return nm; |
|
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|
2584 } |
|
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|
2585 |
|
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|
2586 ResourceMark rm; |
|
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|
2587 |
|
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2588 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2589 if (buf != NULL) { |
| 1748 | 2590 CodeBuffer buffer(buf); |
|
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2591 // Need a few relocation entries |
|
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2592 double locs_buf[20]; |
|
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2593 buffer.insts()->initialize_shared_locs( |
|
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2594 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
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2595 MacroAssembler _masm(&buffer); |
|
116
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2596 |
|
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2597 // Generate the compiled-to-native wrapper code |
|
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2598 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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2599 } |
|
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2600 } |
|
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2601 return nm; |
|
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2602 } |
|
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2603 |
|
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2604 // the dtrace method needs to convert java lang string to utf8 string. |
|
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2605 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
|
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2606 typeArrayOop jlsValue = java_lang_String::value(src); |
|
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2607 int jlsOffset = java_lang_String::offset(src); |
|
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2608 int jlsLen = java_lang_String::length(src); |
|
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2609 jchar* jlsPos = (jlsLen == 0) ? NULL : |
|
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2610 jlsValue->char_at_addr(jlsOffset); |
|
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2611 assert(typeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
|
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2612 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
|
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2613 } |
|
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2614 #endif // ndef HAVE_DTRACE_H |
|
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2615 |
| 0 | 2616 // ------------------------------------------------------------------------- |
| 2617 // Java-Java calling convention | |
| 2618 // (what you use when Java calls Java) | |
| 2619 | |
| 2620 //------------------------------name_for_receiver---------------------------------- | |
| 2621 // For a given signature, return the VMReg for parameter 0. | |
| 2622 VMReg SharedRuntime::name_for_receiver() { | |
| 2623 VMRegPair regs; | |
| 2624 BasicType sig_bt = T_OBJECT; | |
| 2625 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2626 // Return argument 0 register. In the LP64 build pointers | |
| 2627 // take 2 registers, but the VM wants only the 'main' name. | |
| 2628 return regs.first(); | |
| 2629 } | |
| 2630 | |
|
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2631 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
| 0 | 2632 // This method is returning a data structure allocating as a |
| 2633 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2634 char *s = sig->as_C_string(); | |
| 2635 int len = (int)strlen(s); | |
| 2636 *s++; len--; // Skip opening paren | |
| 2637 char *t = s+len; | |
| 2638 while( *(--t) != ')' ) ; // Find close paren | |
| 2639 | |
| 2640 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2641 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2642 int cnt = 0; | |
|
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2643 if (has_receiver) { |
| 0 | 2644 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2645 } | |
| 2646 | |
| 2647 while( s < t ) { | |
| 2648 switch( *s++ ) { // Switch on signature character | |
| 2649 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2650 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2651 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2652 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2653 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2654 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2655 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2656 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2657 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2658 case 'L': // Oop | |
| 2659 while( *s++ != ';' ) ; // Skip signature | |
| 2660 sig_bt[cnt++] = T_OBJECT; | |
| 2661 break; | |
| 2662 case '[': { // Array | |
| 2663 do { // Skip optional size | |
| 2664 while( *s >= '0' && *s <= '9' ) s++; | |
| 2665 } while( *s++ == '[' ); // Nested arrays? | |
| 2666 // Skip element type | |
| 2667 if( s[-1] == 'L' ) | |
| 2668 while( *s++ != ';' ) ; // Skip signature | |
| 2669 sig_bt[cnt++] = T_ARRAY; | |
| 2670 break; | |
| 2671 } | |
| 2672 default : ShouldNotReachHere(); | |
| 2673 } | |
| 2674 } | |
| 2675 assert( cnt < 256, "grow table size" ); | |
| 2676 | |
| 2677 int comp_args_on_stack; | |
| 2678 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2679 | |
| 2680 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2681 // we must add that in to get "true" stack offsets. | |
| 2682 | |
| 2683 if (comp_args_on_stack) { | |
| 2684 for (int i = 0; i < cnt; i++) { | |
| 2685 VMReg reg1 = regs[i].first(); | |
| 2686 if( reg1->is_stack()) { | |
| 2687 // Yuck | |
| 2688 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2689 } | |
| 2690 VMReg reg2 = regs[i].second(); | |
| 2691 if( reg2->is_stack()) { | |
| 2692 // Yuck | |
| 2693 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2694 } | |
| 2695 regs[i].set_pair(reg2, reg1); | |
| 2696 } | |
| 2697 } | |
| 2698 | |
| 2699 // results | |
| 2700 *arg_size = cnt; | |
| 2701 return regs; | |
| 2702 } | |
| 2703 | |
| 2704 // OSR Migration Code | |
| 2705 // | |
| 2706 // This code is used convert interpreter frames into compiled frames. It is | |
| 2707 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2708 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2709 // active locks are inflated to allow them to move. The displaced headers and | |
| 2710 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2711 // back to the compiled code. The compiled code then pops the current | |
| 2712 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2713 // copies the interpreter locals and displaced headers where it wants. | |
| 2714 // Finally it calls back to free the temp buffer. | |
| 2715 // | |
| 2716 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2717 | |
| 2718 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2719 | |
| 2720 #ifdef IA64 | |
| 2721 ShouldNotReachHere(); // NYI | |
| 2722 #endif /* IA64 */ | |
| 2723 | |
| 2724 // | |
| 2725 // This code is dependent on the memory layout of the interpreter local | |
| 2726 // array and the monitors. On all of our platforms the layout is identical | |
| 2727 // so this code is shared. If some platform lays the their arrays out | |
| 2728 // differently then this code could move to platform specific code or | |
| 2729 // the code here could be modified to copy items one at a time using | |
| 2730 // frame accessor methods and be platform independent. | |
| 2731 | |
| 2732 frame fr = thread->last_frame(); | |
| 2733 assert( fr.is_interpreted_frame(), "" ); | |
| 2734 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2735 | |
| 2736 // Figure out how many monitors are active. | |
| 2737 int active_monitor_count = 0; | |
| 2738 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2739 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2740 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2741 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2742 } | |
| 2743 | |
| 2744 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2745 // could double check it. | |
| 2746 | |
| 2747 methodOop moop = fr.interpreter_frame_method(); | |
| 2748 int max_locals = moop->max_locals(); | |
| 2749 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2750 int buf_size_words = max_locals + active_monitor_count*2; | |
| 2751 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words); | |
| 2752 | |
| 2753 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2754 // Since there's no GC I can copy the oops blindly. | |
| 2755 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2756 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2757 (HeapWord*)&buf[0], |
| 2758 max_locals); | |
| 2759 | |
| 2760 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2761 int i = max_locals; | |
| 2762 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2763 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2764 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2765 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2766 BasicLock *lock = kptr2->lock(); | |
| 2767 // Inflate so the displaced header becomes position-independent | |
| 2768 if (lock->displaced_header()->is_unlocked()) | |
| 2769 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2770 // Now the displaced header is free to move | |
| 2771 buf[i++] = (intptr_t)lock->displaced_header(); | |
| 2772 buf[i++] = (intptr_t)kptr2->obj(); | |
| 2773 } | |
| 2774 } | |
| 2775 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2776 | |
| 2777 return buf; | |
| 2778 JRT_END | |
| 2779 | |
| 2780 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 2781 FREE_C_HEAP_ARRAY(intptr_t,buf); | |
| 2782 JRT_END | |
| 2783 | |
| 2784 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
|
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2785 AdapterHandlerTableIterator iter(_adapters); |
|
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2786 while (iter.has_next()) { |
|
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|
2787 AdapterHandlerEntry* a = iter.next(); |
|
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|
2788 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
| 0 | 2789 } |
| 2790 return false; | |
| 2791 } | |
| 2792 | |
|
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2793 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
|
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2794 AdapterHandlerTableIterator iter(_adapters); |
|
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|
2795 while (iter.has_next()) { |
|
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|
2796 AdapterHandlerEntry* a = iter.next(); |
|
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|
2797 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) { |
|
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|
2798 st->print("Adapter for signature: "); |
|
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|
2799 st->print_cr("%s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
|
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|
2800 a->fingerprint()->as_string(), |
|
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|
2801 a->get_i2c_entry(), a->get_c2i_entry(), a->get_c2i_unverified_entry()); |
|
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2802 |
| 0 | 2803 return; |
| 2804 } | |
| 2805 } | |
| 2806 assert(false, "Should have found handler"); | |
| 2807 } | |
|
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2808 |
|
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|
2809 #ifndef PRODUCT |
|
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|
2810 |
|
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|
2811 void AdapterHandlerLibrary::print_statistics() { |
|
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|
2812 _adapters->print_statistics(); |
|
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|
2813 } |
|
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|
2814 |
| 0 | 2815 #endif /* PRODUCT */ |