Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| author | coleenp |
|---|---|
| date | Thu, 27 Jan 2011 16:11:27 -0800 |
| parents | 8012aa3ccede |
| children | d25d4ca69222 b92c45f2bc75 |
| 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 | |
| 71 #ifdef COMPILER1 | |
| 72 #include "c1/c1_Runtime1.hpp" | |
| 73 #endif | |
| 74 | |
| 0 | 75 #include <math.h> |
| 76 | |
| 77 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); | |
| 78 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
| 79 char*, int, char*, int, char*, int); | |
| 80 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
| 81 char*, int, char*, int, char*, int); | |
| 82 | |
| 83 // Implementation of SharedRuntime | |
| 84 | |
| 85 #ifndef PRODUCT | |
| 86 // For statistics | |
| 87 int SharedRuntime::_ic_miss_ctr = 0; | |
| 88 int SharedRuntime::_wrong_method_ctr = 0; | |
| 89 int SharedRuntime::_resolve_static_ctr = 0; | |
| 90 int SharedRuntime::_resolve_virtual_ctr = 0; | |
| 91 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
| 92 int SharedRuntime::_implicit_null_throws = 0; | |
| 93 int SharedRuntime::_implicit_div0_throws = 0; | |
| 94 int SharedRuntime::_throw_null_ctr = 0; | |
| 95 | |
| 96 int SharedRuntime::_nof_normal_calls = 0; | |
| 97 int SharedRuntime::_nof_optimized_calls = 0; | |
| 98 int SharedRuntime::_nof_inlined_calls = 0; | |
| 99 int SharedRuntime::_nof_megamorphic_calls = 0; | |
| 100 int SharedRuntime::_nof_static_calls = 0; | |
| 101 int SharedRuntime::_nof_inlined_static_calls = 0; | |
| 102 int SharedRuntime::_nof_interface_calls = 0; | |
| 103 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
| 104 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
| 105 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
| 106 int SharedRuntime::_nof_removable_exceptions = 0; | |
| 107 | |
| 108 int SharedRuntime::_new_instance_ctr=0; | |
| 109 int SharedRuntime::_new_array_ctr=0; | |
| 110 int SharedRuntime::_multi1_ctr=0; | |
| 111 int SharedRuntime::_multi2_ctr=0; | |
| 112 int SharedRuntime::_multi3_ctr=0; | |
| 113 int SharedRuntime::_multi4_ctr=0; | |
| 114 int SharedRuntime::_multi5_ctr=0; | |
| 115 int SharedRuntime::_mon_enter_stub_ctr=0; | |
| 116 int SharedRuntime::_mon_exit_stub_ctr=0; | |
| 117 int SharedRuntime::_mon_enter_ctr=0; | |
| 118 int SharedRuntime::_mon_exit_ctr=0; | |
| 119 int SharedRuntime::_partial_subtype_ctr=0; | |
| 120 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
| 121 int SharedRuntime::_jshort_array_copy_ctr=0; | |
| 122 int SharedRuntime::_jint_array_copy_ctr=0; | |
| 123 int SharedRuntime::_jlong_array_copy_ctr=0; | |
| 124 int SharedRuntime::_oop_array_copy_ctr=0; | |
| 125 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
| 126 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
| 127 int SharedRuntime::_generic_array_copy_ctr=0; | |
| 128 int SharedRuntime::_slow_array_copy_ctr=0; | |
| 129 int SharedRuntime::_find_handler_ctr=0; | |
| 130 int SharedRuntime::_rethrow_ctr=0; | |
| 131 | |
| 132 int SharedRuntime::_ICmiss_index = 0; | |
| 133 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
| 134 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
| 135 | |
| 136 void SharedRuntime::trace_ic_miss(address at) { | |
| 137 for (int i = 0; i < _ICmiss_index; i++) { | |
| 138 if (_ICmiss_at[i] == at) { | |
| 139 _ICmiss_count[i]++; | |
| 140 return; | |
| 141 } | |
| 142 } | |
| 143 int index = _ICmiss_index++; | |
| 144 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
| 145 _ICmiss_at[index] = at; | |
| 146 _ICmiss_count[index] = 1; | |
| 147 } | |
| 148 | |
| 149 void SharedRuntime::print_ic_miss_histogram() { | |
| 150 if (ICMissHistogram) { | |
| 151 tty->print_cr ("IC Miss Histogram:"); | |
| 152 int tot_misses = 0; | |
| 153 for (int i = 0; i < _ICmiss_index; i++) { | |
| 154 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
| 155 tot_misses += _ICmiss_count[i]; | |
| 156 } | |
| 157 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
| 158 } | |
| 159 } | |
| 160 #endif // PRODUCT | |
| 161 | |
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162 #ifndef SERIALGC |
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163 |
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164 // G1 write-barrier pre: executed before a pointer store. |
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165 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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166 if (orig == NULL) { |
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167 assert(false, "should be optimized out"); |
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168 return; |
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169 } |
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170 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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171 // store the original value that was in the field reference |
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172 thread->satb_mark_queue().enqueue(orig); |
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173 JRT_END |
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174 |
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175 // G1 write-barrier post: executed after a pointer store. |
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176 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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177 thread->dirty_card_queue().enqueue(card_addr); |
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178 JRT_END |
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179 |
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180 #endif // !SERIALGC |
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181 |
| 0 | 182 |
| 183 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
| 184 return x * y; | |
| 185 JRT_END | |
| 186 | |
| 187 | |
| 188 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
| 189 if (x == min_jlong && y == CONST64(-1)) { | |
| 190 return x; | |
| 191 } else { | |
| 192 return x / y; | |
| 193 } | |
| 194 JRT_END | |
| 195 | |
| 196 | |
| 197 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
| 198 if (x == min_jlong && y == CONST64(-1)) { | |
| 199 return 0; | |
| 200 } else { | |
| 201 return x % y; | |
| 202 } | |
| 203 JRT_END | |
| 204 | |
| 205 | |
| 206 const juint float_sign_mask = 0x7FFFFFFF; | |
| 207 const juint float_infinity = 0x7F800000; | |
| 208 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
| 209 const julong double_infinity = CONST64(0x7FF0000000000000); | |
| 210 | |
| 211 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
| 212 #ifdef _WIN64 | |
| 213 // 64-bit Windows on amd64 returns the wrong values for | |
| 214 // infinity operands. | |
| 215 union { jfloat f; juint i; } xbits, ybits; | |
| 216 xbits.f = x; | |
| 217 ybits.f = y; | |
| 218 // x Mod Infinity == x unless x is infinity | |
| 219 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
| 220 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
| 221 return x; | |
| 222 } | |
| 223 #endif | |
| 224 return ((jfloat)fmod((double)x,(double)y)); | |
| 225 JRT_END | |
| 226 | |
| 227 | |
| 228 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
| 229 #ifdef _WIN64 | |
| 230 union { jdouble d; julong l; } xbits, ybits; | |
| 231 xbits.d = x; | |
| 232 ybits.d = y; | |
| 233 // x Mod Infinity == x unless x is infinity | |
| 234 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
| 235 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
| 236 return x; | |
| 237 } | |
| 238 #endif | |
| 239 return ((jdouble)fmod((double)x,(double)y)); | |
| 240 JRT_END | |
| 241 | |
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242 #ifdef __SOFTFP__ |
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243 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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244 return x + y; |
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245 JRT_END |
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246 |
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247 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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248 return x - y; |
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249 JRT_END |
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250 |
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251 JRT_LEAF(jfloat, SharedRuntime::fmul(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::fdiv(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(jdouble, SharedRuntime::dadd(jdouble x, jdouble 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(jdouble, SharedRuntime::dsub(jdouble x, jdouble 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::dmul(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::ddiv(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(jfloat, SharedRuntime::i2f(jint x)) |
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276 return (jfloat)x; |
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277 JRT_END |
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278 |
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279 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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280 return (jdouble)x; |
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281 JRT_END |
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282 |
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283 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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284 return (jdouble)x; |
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285 JRT_END |
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286 |
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287 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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288 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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289 JRT_END |
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290 |
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291 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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292 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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293 JRT_END |
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294 |
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295 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double 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::dcmpg(double x, double 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 // Functions to return the opposite of the aeabi functions for nan. |
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304 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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305 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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306 JRT_END |
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307 |
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308 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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309 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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310 JRT_END |
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311 |
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312 JRT_LEAF(int, SharedRuntime::unordered_fcmple(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_dcmple(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_fcmpge(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_dcmpge(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_fcmpgt(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_dcmpgt(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 // Intrinsics make gcc generate code for these. |
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337 float SharedRuntime::fneg(float f) { |
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338 return -f; |
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339 } |
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340 |
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341 double SharedRuntime::dneg(double f) { |
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342 return -f; |
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343 } |
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344 |
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345 #endif // __SOFTFP__ |
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346 |
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347 #if defined(__SOFTFP__) || defined(E500V2) |
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348 // Intrinsics make gcc generate code for these. |
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349 double SharedRuntime::dabs(double f) { |
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350 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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351 } |
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352 |
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353 #endif |
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354 |
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355 #if defined(__SOFTFP__) || defined(PPC) |
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356 double SharedRuntime::dsqrt(double f) { |
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357 return sqrt(f); |
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358 } |
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359 #endif |
| 0 | 360 |
| 361 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
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362 if (g_isnan(x)) |
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363 return 0; |
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364 if (x >= (jfloat) max_jint) |
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365 return max_jint; |
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366 if (x <= (jfloat) min_jint) |
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367 return min_jint; |
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368 return (jint) x; |
| 0 | 369 JRT_END |
| 370 | |
| 371 | |
| 372 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
|
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373 if (g_isnan(x)) |
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374 return 0; |
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375 if (x >= (jfloat) max_jlong) |
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376 return max_jlong; |
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377 if (x <= (jfloat) min_jlong) |
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378 return min_jlong; |
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379 return (jlong) x; |
| 0 | 380 JRT_END |
| 381 | |
| 382 | |
| 383 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
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384 if (g_isnan(x)) |
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385 return 0; |
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386 if (x >= (jdouble) max_jint) |
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387 return max_jint; |
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388 if (x <= (jdouble) min_jint) |
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389 return min_jint; |
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390 return (jint) x; |
| 0 | 391 JRT_END |
| 392 | |
| 393 | |
| 394 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
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395 if (g_isnan(x)) |
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396 return 0; |
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397 if (x >= (jdouble) max_jlong) |
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398 return max_jlong; |
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399 if (x <= (jdouble) min_jlong) |
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400 return min_jlong; |
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401 return (jlong) x; |
| 0 | 402 JRT_END |
| 403 | |
| 404 | |
| 405 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
| 406 return (jfloat)x; | |
| 407 JRT_END | |
| 408 | |
| 409 | |
| 410 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
| 411 return (jfloat)x; | |
| 412 JRT_END | |
| 413 | |
| 414 | |
| 415 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
| 416 return (jdouble)x; | |
| 417 JRT_END | |
| 418 | |
| 419 // Exception handling accross interpreter/compiler boundaries | |
| 420 // | |
| 421 // exception_handler_for_return_address(...) returns the continuation address. | |
| 422 // The continuation address is the entry point of the exception handler of the | |
| 423 // previous frame depending on the return address. | |
| 424 | |
| 1295 | 425 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
| 0 | 426 assert(frame::verify_return_pc(return_address), "must be a return pc"); |
| 427 | |
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428 // Reset MethodHandle flag. |
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429 thread->set_is_method_handle_return(false); |
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430 |
| 0 | 431 // the fastest case first |
| 432 CodeBlob* blob = CodeCache::find_blob(return_address); | |
| 433 if (blob != NULL && blob->is_nmethod()) { | |
| 434 nmethod* code = (nmethod*)blob; | |
| 435 assert(code != NULL, "nmethod must be present"); | |
| 1295 | 436 // Check if the return address is a MethodHandle call site. |
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437 thread->set_is_method_handle_return(code->is_method_handle_return(return_address)); |
| 0 | 438 // native nmethods don't have exception handlers |
| 439 assert(!code->is_native_method(), "no exception handler"); | |
| 440 assert(code->header_begin() != code->exception_begin(), "no exception handler"); | |
| 441 if (code->is_deopt_pc(return_address)) { | |
| 442 return SharedRuntime::deopt_blob()->unpack_with_exception(); | |
| 443 } else { | |
| 444 return code->exception_begin(); | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 // Entry code | |
| 449 if (StubRoutines::returns_to_call_stub(return_address)) { | |
| 450 return StubRoutines::catch_exception_entry(); | |
| 451 } | |
| 452 // Interpreted code | |
| 453 if (Interpreter::contains(return_address)) { | |
| 454 return Interpreter::rethrow_exception_entry(); | |
| 455 } | |
| 456 | |
| 457 // Compiled code | |
| 458 if (CodeCache::contains(return_address)) { | |
| 459 CodeBlob* blob = CodeCache::find_blob(return_address); | |
| 460 if (blob->is_nmethod()) { | |
| 461 nmethod* code = (nmethod*)blob; | |
| 462 assert(code != NULL, "nmethod must be present"); | |
| 1295 | 463 // Check if the return address is a MethodHandle call site. |
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464 thread->set_is_method_handle_return(code->is_method_handle_return(return_address)); |
| 0 | 465 assert(code->header_begin() != code->exception_begin(), "no exception handler"); |
| 466 return code->exception_begin(); | |
| 467 } | |
| 468 if (blob->is_runtime_stub()) { | |
| 469 ShouldNotReachHere(); // callers are responsible for skipping runtime stub frames | |
| 470 } | |
| 471 } | |
| 472 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); | |
| 473 #ifndef PRODUCT | |
| 474 { ResourceMark rm; | |
| 475 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
| 476 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
| 477 tty->print_cr("b) other problem"); | |
| 478 } | |
| 479 #endif // PRODUCT | |
| 480 ShouldNotReachHere(); | |
| 481 return NULL; | |
| 482 } | |
| 483 | |
| 484 | |
| 1295 | 485 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
| 486 return raw_exception_handler_for_return_address(thread, return_address); | |
| 0 | 487 JRT_END |
| 488 | |
| 1295 | 489 |
| 0 | 490 address SharedRuntime::get_poll_stub(address pc) { |
| 491 address stub; | |
| 492 // Look up the code blob | |
| 493 CodeBlob *cb = CodeCache::find_blob(pc); | |
| 494 | |
| 495 // Should be an nmethod | |
| 496 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
| 497 | |
| 498 // Look up the relocation information | |
| 499 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
| 500 "safepoint polling: type must be poll" ); | |
| 501 | |
| 502 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
| 503 "Only polling locations are used for safepoint"); | |
| 504 | |
| 505 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
| 506 if (at_poll_return) { | |
| 507 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
| 508 "polling page return stub not created yet"); | |
| 1748 | 509 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
| 0 | 510 } else { |
| 511 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
| 512 "polling page safepoint stub not created yet"); | |
| 1748 | 513 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
| 0 | 514 } |
| 515 #ifndef PRODUCT | |
| 516 if( TraceSafepoint ) { | |
| 517 char buf[256]; | |
| 518 jio_snprintf(buf, sizeof(buf), | |
| 519 "... found polling page %s exception at pc = " | |
| 520 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
| 521 at_poll_return ? "return" : "loop", | |
| 522 (intptr_t)pc, (intptr_t)stub); | |
| 523 tty->print_raw_cr(buf); | |
| 524 } | |
| 525 #endif // PRODUCT | |
| 526 return stub; | |
| 527 } | |
| 528 | |
| 529 | |
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530 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
| 0 | 531 assert(caller.is_interpreted_frame(), ""); |
| 532 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
| 533 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
| 534 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
| 535 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
| 536 return result; | |
| 537 } | |
| 538 | |
| 539 | |
| 540 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
|
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541 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 542 vframeStream vfst(thread, true); |
| 543 methodHandle method = methodHandle(thread, vfst.method()); | |
| 544 address bcp = method()->bcp_from(vfst.bci()); | |
| 545 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
| 546 } | |
| 547 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
| 548 } | |
| 549 | |
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550 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
| 0 | 551 Handle h_exception = Exceptions::new_exception(thread, name, message); |
| 552 throw_and_post_jvmti_exception(thread, h_exception); | |
| 553 } | |
| 554 | |
|
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555 // The interpreter code to call this tracing function is only |
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556 // called/generated when TraceRedefineClasses has the right bits |
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557 // set. Since obsolete methods are never compiled, we don't have |
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558 // to modify the compilers to generate calls to this function. |
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559 // |
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560 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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561 JavaThread* thread, methodOopDesc* method)) |
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562 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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563 |
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564 if (method->is_obsolete()) { |
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565 // We are calling an obsolete method, but this is not necessarily |
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566 // an error. Our method could have been redefined just after we |
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567 // fetched the methodOop from the constant pool. |
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568 |
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569 // RC_TRACE macro has an embedded ResourceMark |
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570 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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571 ("calling obsolete method '%s'", |
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572 method->name_and_sig_as_C_string())); |
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573 if (RC_TRACE_ENABLED(0x00002000)) { |
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574 // this option is provided to debug calls to obsolete methods |
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575 guarantee(false, "faulting at call to an obsolete method."); |
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576 } |
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577 } |
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578 return 0; |
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579 JRT_END |
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580 |
| 0 | 581 // ret_pc points into caller; we are returning caller's exception handler |
| 582 // for given exception | |
| 583 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
| 584 bool force_unwind, bool top_frame_only) { | |
| 585 assert(nm != NULL, "must exist"); | |
| 586 ResourceMark rm; | |
| 587 | |
| 588 ScopeDesc* sd = nm->scope_desc_at(ret_pc); | |
| 589 // determine handler bci, if any | |
| 590 EXCEPTION_MARK; | |
| 591 | |
| 592 int handler_bci = -1; | |
| 593 int scope_depth = 0; | |
| 594 if (!force_unwind) { | |
| 595 int bci = sd->bci(); | |
| 596 do { | |
| 597 bool skip_scope_increment = false; | |
| 598 // exception handler lookup | |
| 599 KlassHandle ek (THREAD, exception->klass()); | |
| 600 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
| 601 if (HAS_PENDING_EXCEPTION) { | |
| 602 // We threw an exception while trying to find the exception handler. | |
| 603 // Transfer the new exception to the exception handle which will | |
| 604 // be set into thread local storage, and do another lookup for an | |
| 605 // exception handler for this exception, this time starting at the | |
| 606 // BCI of the exception handler which caused the exception to be | |
| 607 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
| 608 // argument to ensure that the correct exception is thrown (4870175). | |
| 609 exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 610 CLEAR_PENDING_EXCEPTION; | |
| 611 if (handler_bci >= 0) { | |
| 612 bci = handler_bci; | |
| 613 handler_bci = -1; | |
| 614 skip_scope_increment = true; | |
| 615 } | |
| 616 } | |
| 617 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { | |
| 618 sd = sd->sender(); | |
| 619 if (sd != NULL) { | |
| 620 bci = sd->bci(); | |
| 621 } | |
| 622 ++scope_depth; | |
| 623 } | |
| 624 } while (!top_frame_only && handler_bci < 0 && sd != NULL); | |
| 625 } | |
| 626 | |
| 627 // found handling method => lookup exception handler | |
| 1748 | 628 int catch_pco = ret_pc - nm->code_begin(); |
| 0 | 629 |
| 630 ExceptionHandlerTable table(nm); | |
| 631 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
| 632 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
| 633 // Allow abbreviated catch tables. The idea is to allow a method | |
| 634 // to materialize its exceptions without committing to the exact | |
| 635 // routing of exceptions. In particular this is needed for adding | |
| 636 // a synthethic handler to unlock monitors when inlining | |
| 637 // synchonized methods since the unlock path isn't represented in | |
| 638 // the bytecodes. | |
| 639 t = table.entry_for(catch_pco, -1, 0); | |
| 640 } | |
| 641 | |
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642 #ifdef COMPILER1 |
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643 if (t == NULL && nm->is_compiled_by_c1()) { |
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644 assert(nm->unwind_handler_begin() != NULL, ""); |
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645 return nm->unwind_handler_begin(); |
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646 } |
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647 #endif |
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648 |
| 0 | 649 if (t == NULL) { |
| 650 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
| 651 tty->print_cr(" Exception:"); | |
| 652 exception->print(); | |
| 653 tty->cr(); | |
| 654 tty->print_cr(" Compiled exception table :"); | |
| 655 table.print(); | |
| 656 nm->print_code(); | |
| 657 guarantee(false, "missing exception handler"); | |
| 658 return NULL; | |
| 659 } | |
| 660 | |
| 1748 | 661 return nm->code_begin() + t->pco(); |
| 0 | 662 } |
| 663 | |
| 664 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 665 // These errors occur only at call sites | |
| 666 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
| 667 JRT_END | |
| 668 | |
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669 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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670 // These errors occur only at call sites |
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671 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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672 JRT_END |
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673 |
| 0 | 674 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
| 675 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
| 676 JRT_END | |
| 677 | |
| 678 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
| 679 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 680 JRT_END | |
| 681 | |
| 682 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
| 683 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
| 684 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
| 685 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
| 686 JRT_END | |
| 687 | |
| 688 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 689 // We avoid using the normal exception construction in this case because | |
| 690 // it performs an upcall to Java, and we're already out of stack space. | |
| 691 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
| 692 oop exception_oop = instanceKlass::cast(k)->allocate_instance(CHECK); | |
| 693 Handle exception (thread, exception_oop); | |
| 694 if (StackTraceInThrowable) { | |
| 695 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 696 } | |
| 697 throw_and_post_jvmti_exception(thread, exception); | |
| 698 JRT_END | |
| 699 | |
| 700 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, | |
| 701 address pc, | |
| 702 SharedRuntime::ImplicitExceptionKind exception_kind) | |
| 703 { | |
| 704 address target_pc = NULL; | |
| 705 | |
| 706 if (Interpreter::contains(pc)) { | |
| 707 #ifdef CC_INTERP | |
| 708 // C++ interpreter doesn't throw implicit exceptions | |
| 709 ShouldNotReachHere(); | |
| 710 #else | |
| 711 switch (exception_kind) { | |
| 712 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
| 713 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
| 714 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
| 715 default: ShouldNotReachHere(); | |
| 716 } | |
| 717 #endif // !CC_INTERP | |
| 718 } else { | |
| 719 switch (exception_kind) { | |
| 720 case STACK_OVERFLOW: { | |
| 721 // Stack overflow only occurs upon frame setup; the callee is | |
| 722 // going to be unwound. Dispatch to a shared runtime stub | |
| 723 // which will cause the StackOverflowError to be fabricated | |
| 724 // and processed. | |
| 725 // For stack overflow in deoptimization blob, cleanup thread. | |
| 726 if (thread->deopt_mark() != NULL) { | |
| 727 Deoptimization::cleanup_deopt_info(thread, NULL); | |
| 728 } | |
| 729 return StubRoutines::throw_StackOverflowError_entry(); | |
| 730 } | |
| 731 | |
| 732 case IMPLICIT_NULL: { | |
| 733 if (VtableStubs::contains(pc)) { | |
| 734 // We haven't yet entered the callee frame. Fabricate an | |
| 735 // exception and begin dispatching it in the caller. Since | |
| 736 // the caller was at a call site, it's safe to destroy all | |
| 737 // caller-saved registers, as these entry points do. | |
| 738 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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739 |
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740 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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741 if (vt_stub == NULL) return NULL; |
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742 |
| 0 | 743 if (vt_stub->is_abstract_method_error(pc)) { |
| 744 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
| 745 return StubRoutines::throw_AbstractMethodError_entry(); | |
| 746 } else { | |
| 747 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 748 } | |
| 749 } else { | |
| 750 CodeBlob* cb = CodeCache::find_blob(pc); | |
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751 |
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752 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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753 if (cb == NULL) return NULL; |
| 0 | 754 |
| 755 // Exception happened in CodeCache. Must be either: | |
| 756 // 1. Inline-cache check in C2I handler blob, | |
| 757 // 2. Inline-cache check in nmethod, or | |
| 758 // 3. Implict null exception in nmethod | |
| 759 | |
| 760 if (!cb->is_nmethod()) { | |
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761 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
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762 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
| 0 | 763 // There is no handler here, so we will simply unwind. |
| 764 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 765 } | |
| 766 | |
| 767 // Otherwise, it's an nmethod. Consult its exception handlers. | |
| 768 nmethod* nm = (nmethod*)cb; | |
| 769 if (nm->inlinecache_check_contains(pc)) { | |
| 770 // exception happened inside inline-cache check code | |
| 771 // => the nmethod is not yet active (i.e., the frame | |
| 772 // is not set up yet) => use return address pushed by | |
| 773 // caller => don't push another return address | |
| 774 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
| 775 } | |
| 776 | |
| 777 #ifndef PRODUCT | |
| 778 _implicit_null_throws++; | |
| 779 #endif | |
| 780 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 781 // If there's an unexpected fault, target_pc might be NULL, |
| 782 // in which case we want to fall through into the normal | |
| 783 // error handling code. | |
| 0 | 784 } |
| 785 | |
| 786 break; // fall through | |
| 787 } | |
| 788 | |
| 789 | |
| 790 case IMPLICIT_DIVIDE_BY_ZERO: { | |
| 791 nmethod* nm = CodeCache::find_nmethod(pc); | |
| 792 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
| 793 #ifndef PRODUCT | |
| 794 _implicit_div0_throws++; | |
| 795 #endif | |
| 796 target_pc = nm->continuation_for_implicit_exception(pc); | |
| 1250 | 797 // If there's an unexpected fault, target_pc might be NULL, |
| 798 // in which case we want to fall through into the normal | |
| 799 // error handling code. | |
| 0 | 800 break; // fall through |
| 801 } | |
| 802 | |
| 803 default: ShouldNotReachHere(); | |
| 804 } | |
| 805 | |
| 806 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
| 807 | |
| 808 // for AbortVMOnException flag | |
| 809 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
| 810 if (exception_kind == IMPLICIT_NULL) { | |
| 811 Events::log("Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); | |
| 812 } else { | |
| 813 Events::log("Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); | |
| 814 } | |
| 815 return target_pc; | |
| 816 } | |
| 817 | |
| 818 ShouldNotReachHere(); | |
| 819 return NULL; | |
| 820 } | |
| 821 | |
| 822 | |
| 823 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
| 824 { | |
| 825 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
| 826 } | |
| 827 JNI_END | |
| 828 | |
| 829 | |
| 830 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
| 831 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
| 832 } | |
| 833 | |
| 834 | |
| 835 #ifndef PRODUCT | |
| 836 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
| 837 const frame f = thread->last_frame(); | |
| 838 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
| 839 #ifndef PRODUCT | |
| 840 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
| 841 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
| 842 #endif // !PRODUCT | |
| 843 return preserve_this_value; | |
| 844 JRT_END | |
| 845 #endif // !PRODUCT | |
| 846 | |
| 847 | |
| 848 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
| 849 os::yield_all(attempts); | |
| 850 JRT_END | |
| 851 | |
| 852 | |
| 853 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 854 assert(obj->is_oop(), "must be a valid oop"); | |
| 855 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
| 856 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
| 857 JRT_END | |
| 858 | |
| 859 | |
| 860 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
| 861 if (thread != NULL) { | |
| 862 if (thread->is_Java_thread()) { | |
| 863 oop obj = ((JavaThread*)thread)->threadObj(); | |
| 864 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
| 865 } | |
| 866 } | |
| 867 return 0; | |
| 868 } | |
| 869 | |
| 870 /** | |
| 871 * This function ought to be a void function, but cannot be because | |
| 872 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
| 873 * 6254741. Once that is fixed we can remove the dummy return value. | |
| 874 */ | |
| 875 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
| 876 return dtrace_object_alloc_base(Thread::current(), o); | |
| 877 } | |
| 878 | |
| 879 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
| 880 assert(DTraceAllocProbes, "wrong call"); | |
| 881 Klass* klass = o->blueprint(); | |
| 882 int size = o->size(); | |
|
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883 Symbol* name = klass->name(); |
| 0 | 884 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
| 885 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
| 886 return 0; | |
| 887 } | |
| 888 | |
| 889 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
| 890 JavaThread* thread, methodOopDesc* method)) | |
| 891 assert(DTraceMethodProbes, "wrong call"); | |
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892 Symbol* kname = method->klass_name(); |
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893 Symbol* name = method->name(); |
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894 Symbol* sig = method->signature(); |
| 0 | 895 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
| 896 kname->bytes(), kname->utf8_length(), | |
| 897 name->bytes(), name->utf8_length(), | |
| 898 sig->bytes(), sig->utf8_length()); | |
| 899 return 0; | |
| 900 JRT_END | |
| 901 | |
| 902 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
| 903 JavaThread* thread, methodOopDesc* method)) | |
| 904 assert(DTraceMethodProbes, "wrong call"); | |
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905 Symbol* kname = method->klass_name(); |
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906 Symbol* name = method->name(); |
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907 Symbol* sig = method->signature(); |
| 0 | 908 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
| 909 kname->bytes(), kname->utf8_length(), | |
| 910 name->bytes(), name->utf8_length(), | |
| 911 sig->bytes(), sig->utf8_length()); | |
| 912 return 0; | |
| 913 JRT_END | |
| 914 | |
| 915 | |
| 916 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
| 917 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 918 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
| 919 // vtable updates, etc. Caller frame must be compiled. | |
| 920 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
| 921 ResourceMark rm(THREAD); | |
| 922 | |
| 923 // last java frame on stack (which includes native call frames) | |
| 924 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
| 925 | |
| 926 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
| 927 } | |
| 928 | |
| 929 | |
| 930 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
| 931 // for a call current in progress, i.e., arguments has been pushed on stack | |
| 932 // but callee has not been invoked yet. Caller frame must be compiled. | |
| 933 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
| 934 vframeStream& vfst, | |
| 935 Bytecodes::Code& bc, | |
| 936 CallInfo& callinfo, TRAPS) { | |
| 937 Handle receiver; | |
| 938 Handle nullHandle; //create a handy null handle for exception returns | |
| 939 | |
| 940 assert(!vfst.at_end(), "Java frame must exist"); | |
| 941 | |
| 942 // Find caller and bci from vframe | |
| 943 methodHandle caller (THREAD, vfst.method()); | |
| 944 int bci = vfst.bci(); | |
| 945 | |
| 946 // Find bytecode | |
| 2142 | 947 Bytecode_invoke bytecode(caller, bci); |
| 948 bc = bytecode.java_code(); | |
| 949 int bytecode_index = bytecode.index(); | |
| 0 | 950 |
| 951 // Find receiver for non-static call | |
| 952 if (bc != Bytecodes::_invokestatic) { | |
| 953 // This register map must be update since we need to find the receiver for | |
| 954 // compiled frames. The receiver might be in a register. | |
| 955 RegisterMap reg_map2(thread); | |
| 956 frame stubFrame = thread->last_frame(); | |
| 957 // Caller-frame is a compiled frame | |
| 958 frame callerFrame = stubFrame.sender(®_map2); | |
| 959 | |
| 2142 | 960 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
| 0 | 961 if (callee.is_null()) { |
| 962 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
| 963 } | |
| 964 // Retrieve from a compiled argument list | |
| 965 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
| 966 | |
| 967 if (receiver.is_null()) { | |
| 968 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
| 969 } | |
| 970 } | |
| 971 | |
| 972 // Resolve method. This is parameterized by bytecode. | |
| 973 constantPoolHandle constants (THREAD, caller->constants()); | |
| 974 assert (receiver.is_null() || receiver->is_oop(), "wrong receiver"); | |
| 975 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); | |
| 976 | |
| 977 #ifdef ASSERT | |
| 978 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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979 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
| 0 | 980 assert(receiver.not_null(), "should have thrown exception"); |
| 981 KlassHandle receiver_klass (THREAD, receiver->klass()); | |
| 982 klassOop rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); | |
| 983 // klass is already loaded | |
| 984 KlassHandle static_receiver_klass (THREAD, rk); | |
| 985 assert(receiver_klass->is_subtype_of(static_receiver_klass()), "actual receiver must be subclass of static receiver klass"); | |
| 986 if (receiver_klass->oop_is_instance()) { | |
| 987 if (instanceKlass::cast(receiver_klass())->is_not_initialized()) { | |
| 988 tty->print_cr("ERROR: Klass not yet initialized!!"); | |
| 989 receiver_klass.print(); | |
| 990 } | |
| 991 assert (!instanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); | |
| 992 } | |
| 993 } | |
| 994 #endif | |
| 995 | |
| 996 return receiver; | |
| 997 } | |
| 998 | |
| 999 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
| 1000 ResourceMark rm(THREAD); | |
| 1001 // We need first to check if any Java activations (compiled, interpreted) | |
| 1002 // exist on the stack since last JavaCall. If not, we need | |
| 1003 // to get the target method from the JavaCall wrapper. | |
| 1004 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
| 1005 methodHandle callee_method; | |
| 1006 if (vfst.at_end()) { | |
| 1007 // No Java frames were found on stack since we did the JavaCall. | |
| 1008 // Hence the stack can only contain an entry_frame. We need to | |
| 1009 // find the target method from the stub frame. | |
| 1010 RegisterMap reg_map(thread, false); | |
| 1011 frame fr = thread->last_frame(); | |
| 1012 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
| 1013 fr = fr.sender(®_map); | |
| 1014 assert(fr.is_entry_frame(), "must be"); | |
| 1015 // fr is now pointing to the entry frame. | |
| 1016 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
| 1017 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
| 1018 } else { | |
| 1019 Bytecodes::Code bc; | |
| 1020 CallInfo callinfo; | |
| 1021 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
| 1022 callee_method = callinfo.selected_method(); | |
| 1023 } | |
| 1024 assert(callee_method()->is_method(), "must be"); | |
| 1025 return callee_method; | |
| 1026 } | |
| 1027 | |
| 1028 // Resolves a call. | |
| 1029 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
| 1030 bool is_virtual, | |
| 1031 bool is_optimized, TRAPS) { | |
| 1032 methodHandle callee_method; | |
| 1033 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1034 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
| 1035 int retry_count = 0; | |
| 1036 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
| 1142 | 1037 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
| 0 | 1038 // If has a pending exception then there is no need to re-try to |
| 1039 // resolve this method. | |
| 1040 // If the method has been redefined, we need to try again. | |
| 1041 // Hack: we have no way to update the vtables of arrays, so don't | |
| 1042 // require that java.lang.Object has been updated. | |
| 1043 | |
| 1044 // It is very unlikely that method is redefined more than 100 times | |
| 1045 // in the middle of resolve. If it is looping here more than 100 times | |
| 1046 // means then there could be a bug here. | |
| 1047 guarantee((retry_count++ < 100), | |
| 1048 "Could not resolve to latest version of redefined method"); | |
| 1049 // method is redefined in the middle of resolve so re-try. | |
| 1050 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
| 1051 } | |
| 1052 } | |
| 1053 return callee_method; | |
| 1054 } | |
| 1055 | |
| 1056 // Resolves a call. The compilers generate code for calls that go here | |
| 1057 // and are patched with the real destination of the call. | |
| 1058 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
| 1059 bool is_virtual, | |
| 1060 bool is_optimized, TRAPS) { | |
| 1061 | |
| 1062 ResourceMark rm(thread); | |
| 1063 RegisterMap cbl_map(thread, false); | |
| 1064 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
| 1065 | |
| 1295 | 1066 CodeBlob* caller_cb = caller_frame.cb(); |
| 1067 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
| 1068 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
| 0 | 1069 // make sure caller is not getting deoptimized |
| 1070 // and removed before we are done with it. | |
| 1071 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1295 | 1072 nmethodLocker caller_lock(caller_nm); |
| 0 | 1073 |
| 1074 | |
| 1075 // determine call info & receiver | |
| 1076 // note: a) receiver is NULL for static calls | |
| 1077 // b) an exception is thrown if receiver is NULL for non-static calls | |
| 1078 CallInfo call_info; | |
| 1079 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
| 1080 Handle receiver = find_callee_info(thread, invoke_code, | |
| 1081 call_info, CHECK_(methodHandle())); | |
| 1082 methodHandle callee_method = call_info.selected_method(); | |
| 1083 | |
| 1084 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic) || | |
| 1085 ( is_virtual && invoke_code != Bytecodes::_invokestatic), "inconsistent bytecode"); | |
| 1086 | |
| 1087 #ifndef PRODUCT | |
| 1088 // tracing/debugging/statistics | |
| 1089 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
| 1090 (is_virtual) ? (&_resolve_virtual_ctr) : | |
| 1091 (&_resolve_static_ctr); | |
| 1092 Atomic::inc(addr); | |
| 1093 | |
| 1094 if (TraceCallFixup) { | |
| 1095 ResourceMark rm(thread); | |
| 1096 tty->print("resolving %s%s (%s) call to", | |
| 1097 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
| 1098 Bytecodes::name(invoke_code)); | |
| 1099 callee_method->print_short_name(tty); | |
| 1100 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1101 } | |
| 1102 #endif | |
| 1103 | |
| 1295 | 1104 // JSR 292 |
| 1105 // If the resolved method is a MethodHandle invoke target the call | |
| 1106 // site must be a MethodHandle call site. | |
| 1107 if (callee_method->is_method_handle_invoke()) { | |
| 1108 assert(caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); | |
| 1109 } | |
| 1110 | |
| 0 | 1111 // Compute entry points. This might require generation of C2I converter |
| 1112 // frames, so we cannot be holding any locks here. Furthermore, the | |
| 1113 // computation of the entry points is independent of patching the call. We | |
| 1114 // always return the entry-point, but we only patch the stub if the call has | |
| 1115 // not been deoptimized. Return values: For a virtual call this is an | |
| 1116 // (cached_oop, destination address) pair. For a static call/optimized | |
| 1117 // virtual this is just a destination address. | |
| 1118 | |
| 1119 StaticCallInfo static_call_info; | |
| 1120 CompiledICInfo virtual_call_info; | |
| 1121 | |
| 1122 // Make sure the callee nmethod does not get deoptimized and removed before | |
| 1123 // we are done patching the code. | |
| 1295 | 1124 nmethod* callee_nm = callee_method->code(); |
| 1125 nmethodLocker nl_callee(callee_nm); | |
| 0 | 1126 #ifdef ASSERT |
| 1295 | 1127 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
| 0 | 1128 #endif |
| 1129 | |
| 1130 if (is_virtual) { | |
| 1131 assert(receiver.not_null(), "sanity check"); | |
| 1132 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
| 1133 KlassHandle h_klass(THREAD, receiver->klass()); | |
| 1134 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
| 1135 is_optimized, static_bound, virtual_call_info, | |
| 1136 CHECK_(methodHandle())); | |
| 1137 } else { | |
| 1138 // static call | |
| 1139 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
| 1140 } | |
| 1141 | |
| 1142 // grab lock, check for deoptimization and potentially patch caller | |
| 1143 { | |
| 1144 MutexLocker ml_patch(CompiledIC_lock); | |
| 1145 | |
| 1146 // Now that we are ready to patch if the methodOop was redefined then | |
| 1147 // don't update call site and let the caller retry. | |
| 1148 | |
| 1149 if (!callee_method->is_old()) { | |
| 1150 #ifdef ASSERT | |
| 1151 // We must not try to patch to jump to an already unloaded method. | |
| 1152 if (dest_entry_point != 0) { | |
| 1153 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
| 1154 "should not unload nmethod while locked"); | |
| 1155 } | |
| 1156 #endif | |
| 1157 if (is_virtual) { | |
| 1158 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1159 if (inline_cache->is_clean()) { | |
| 1160 inline_cache->set_to_monomorphic(virtual_call_info); | |
| 1161 } | |
| 1162 } else { | |
| 1163 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
| 1164 if (ssc->is_clean()) ssc->set(static_call_info); | |
| 1165 } | |
| 1166 } | |
| 1167 | |
| 1168 } // unlock CompiledIC_lock | |
| 1169 | |
| 1170 return callee_method; | |
| 1171 } | |
| 1172 | |
| 1173 | |
| 1174 // Inline caches exist only in compiled code | |
| 1175 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
| 1176 #ifdef ASSERT | |
| 1177 RegisterMap reg_map(thread, false); | |
| 1178 frame stub_frame = thread->last_frame(); | |
| 1179 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1180 frame caller_frame = stub_frame.sender(®_map); | |
| 1181 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
| 1182 #endif /* ASSERT */ | |
| 1183 | |
| 1184 methodHandle callee_method; | |
| 1185 JRT_BLOCK | |
| 1186 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
| 1187 // Return methodOop through TLS | |
| 1188 thread->set_vm_result(callee_method()); | |
| 1189 JRT_BLOCK_END | |
| 1190 // return compiled code entry point after potential safepoints | |
| 1191 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1192 return callee_method->verified_code_entry(); | |
| 1193 JRT_END | |
| 1194 | |
| 1195 | |
| 1196 // Handle call site that has been made non-entrant | |
| 1197 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
| 1198 // 6243940 We might end up in here if the callee is deoptimized | |
| 1199 // as we race to call it. We don't want to take a safepoint if | |
| 1200 // the caller was interpreted because the caller frame will look | |
| 1201 // interpreted to the stack walkers and arguments are now | |
| 1202 // "compiled" so it is much better to make this transition | |
| 1203 // invisible to the stack walking code. The i2c path will | |
| 1204 // place the callee method in the callee_target. It is stashed | |
| 1205 // there because if we try and find the callee by normal means a | |
| 1206 // safepoint is possible and have trouble gc'ing the compiled args. | |
| 1207 RegisterMap reg_map(thread, false); | |
| 1208 frame stub_frame = thread->last_frame(); | |
| 1209 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
| 1210 frame caller_frame = stub_frame.sender(®_map); | |
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1211 |
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1212 // MethodHandle invokes don't have a CompiledIC and should always |
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1213 // simply redispatch to the callee_target. |
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1214 address sender_pc = caller_frame.pc(); |
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1215 CodeBlob* sender_cb = caller_frame.cb(); |
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1216 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
| 1204 | 1217 bool is_mh_invoke_via_adapter = false; // Direct c2c call or via adapter? |
| 1218 if (sender_nm != NULL && sender_nm->is_method_handle_return(sender_pc)) { | |
| 1219 // If the callee_target is set, then we have come here via an i2c | |
| 1220 // adapter. | |
| 1221 methodOop callee = thread->callee_target(); | |
| 1222 if (callee != NULL) { | |
| 1223 assert(callee->is_method(), "sanity"); | |
| 1224 is_mh_invoke_via_adapter = true; | |
| 1225 } | |
| 1226 } | |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
845
diff
changeset
|
1227 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
845
diff
changeset
|
1228 if (caller_frame.is_interpreted_frame() || |
| 1204 | 1229 caller_frame.is_entry_frame() || |
| 1230 is_mh_invoke_via_adapter) { | |
| 0 | 1231 methodOop callee = thread->callee_target(); |
| 1232 guarantee(callee != NULL && callee->is_method(), "bad handshake"); | |
| 1233 thread->set_vm_result(callee); | |
| 1234 thread->set_callee_target(NULL); | |
| 1235 return callee->get_c2i_entry(); | |
| 1236 } | |
| 1237 | |
| 1238 // Must be compiled to compiled path which is safe to stackwalk | |
| 1239 methodHandle callee_method; | |
| 1240 JRT_BLOCK | |
| 1241 // Force resolving of caller (if we called from compiled frame) | |
| 1242 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
| 1243 thread->set_vm_result(callee_method()); | |
| 1244 JRT_BLOCK_END | |
| 1245 // return compiled code entry point after potential safepoints | |
| 1246 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1247 return callee_method->verified_code_entry(); | |
| 1248 JRT_END | |
| 1249 | |
| 1250 | |
| 1251 // resolve a static call and patch code | |
| 1252 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
| 1253 methodHandle callee_method; | |
| 1254 JRT_BLOCK | |
| 1255 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
| 1256 thread->set_vm_result(callee_method()); | |
| 1257 JRT_BLOCK_END | |
| 1258 // return compiled code entry point after potential safepoints | |
| 1259 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1260 return callee_method->verified_code_entry(); | |
| 1261 JRT_END | |
| 1262 | |
| 1263 | |
| 1264 // resolve virtual call and update inline cache to monomorphic | |
| 1265 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
| 1266 methodHandle callee_method; | |
| 1267 JRT_BLOCK | |
| 1268 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
| 1269 thread->set_vm_result(callee_method()); | |
| 1270 JRT_BLOCK_END | |
| 1271 // return compiled code entry point after potential safepoints | |
| 1272 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1273 return callee_method->verified_code_entry(); | |
| 1274 JRT_END | |
| 1275 | |
| 1276 | |
| 1277 // Resolve a virtual call that can be statically bound (e.g., always | |
| 1278 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
| 1279 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
| 1280 methodHandle callee_method; | |
| 1281 JRT_BLOCK | |
| 1282 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
| 1283 thread->set_vm_result(callee_method()); | |
| 1284 JRT_BLOCK_END | |
| 1285 // return compiled code entry point after potential safepoints | |
| 1286 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
| 1287 return callee_method->verified_code_entry(); | |
| 1288 JRT_END | |
| 1289 | |
| 1290 | |
| 1291 | |
| 1292 | |
| 1293 | |
| 1294 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
| 1295 ResourceMark rm(thread); | |
| 1296 CallInfo call_info; | |
| 1297 Bytecodes::Code bc; | |
| 1298 | |
| 1299 // receiver is NULL for static calls. An exception is thrown for NULL | |
| 1300 // receivers for non-static calls | |
| 1301 Handle receiver = find_callee_info(thread, bc, call_info, | |
| 1302 CHECK_(methodHandle())); | |
| 1303 // Compiler1 can produce virtual call sites that can actually be statically bound | |
| 1304 // If we fell thru to below we would think that the site was going megamorphic | |
| 1305 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
| 1306 // we'd try and do a vtable dispatch however methods that can be statically bound | |
| 1307 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
| 1308 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
| 1309 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
| 1310 // never to miss again. I don't believe C2 will produce code like this but if it | |
| 1311 // did this would still be the correct thing to do for it too, hence no ifdef. | |
| 1312 // | |
| 1313 if (call_info.resolved_method()->can_be_statically_bound()) { | |
| 1314 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
| 1315 if (TraceCallFixup) { | |
| 1316 RegisterMap reg_map(thread, false); | |
| 1317 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1318 ResourceMark rm(thread); | |
| 1319 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
| 1320 callee_method->print_short_name(tty); | |
| 1321 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
| 1322 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1323 } | |
| 1324 return callee_method; | |
| 1325 } | |
| 1326 | |
| 1327 methodHandle callee_method = call_info.selected_method(); | |
| 1328 | |
| 1329 bool should_be_mono = false; | |
| 1330 | |
| 1331 #ifndef PRODUCT | |
| 1332 Atomic::inc(&_ic_miss_ctr); | |
| 1333 | |
| 1334 // Statistics & Tracing | |
| 1335 if (TraceCallFixup) { | |
| 1336 ResourceMark rm(thread); | |
| 1337 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1338 callee_method->print_short_name(tty); | |
| 1339 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1340 } | |
| 1341 | |
| 1342 if (ICMissHistogram) { | |
| 1343 MutexLocker m(VMStatistic_lock); | |
| 1344 RegisterMap reg_map(thread, false); | |
| 1345 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
| 1346 // produce statistics under the lock | |
| 1347 trace_ic_miss(f.pc()); | |
| 1348 } | |
| 1349 #endif | |
| 1350 | |
| 1351 // install an event collector so that when a vtable stub is created the | |
| 1352 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
| 1353 // event can't be posted when the stub is created as locks are held | |
| 1354 // - instead the event will be deferred until the event collector goes | |
| 1355 // out of scope. | |
| 1356 JvmtiDynamicCodeEventCollector event_collector; | |
| 1357 | |
| 1358 // Update inline cache to megamorphic. Skip update if caller has been | |
| 1359 // made non-entrant or we are called from interpreted. | |
| 1360 { MutexLocker ml_patch (CompiledIC_lock); | |
| 1361 RegisterMap reg_map(thread, false); | |
| 1362 frame caller_frame = thread->last_frame().sender(®_map); | |
| 1363 CodeBlob* cb = caller_frame.cb(); | |
| 1364 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
| 1365 // Not a non-entrant nmethod, so find inline_cache | |
| 1366 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
| 1367 bool should_be_mono = false; | |
| 1368 if (inline_cache->is_optimized()) { | |
| 1369 if (TraceCallFixup) { | |
| 1370 ResourceMark rm(thread); | |
| 1371 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
| 1372 callee_method->print_short_name(tty); | |
| 1373 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1374 } | |
| 1375 should_be_mono = true; | |
| 1376 } else { | |
| 1377 compiledICHolderOop ic_oop = (compiledICHolderOop) inline_cache->cached_oop(); | |
| 1378 if ( ic_oop != NULL && ic_oop->is_compiledICHolder()) { | |
| 1379 | |
| 1380 if (receiver()->klass() == ic_oop->holder_klass()) { | |
| 1381 // This isn't a real miss. We must have seen that compiled code | |
| 1382 // is now available and we want the call site converted to a | |
| 1383 // monomorphic compiled call site. | |
| 1384 // We can't assert for callee_method->code() != NULL because it | |
| 1385 // could have been deoptimized in the meantime | |
| 1386 if (TraceCallFixup) { | |
| 1387 ResourceMark rm(thread); | |
| 1388 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
| 1389 callee_method->print_short_name(tty); | |
| 1390 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1391 } | |
| 1392 should_be_mono = true; | |
| 1393 } | |
| 1394 } | |
| 1395 } | |
| 1396 | |
| 1397 if (should_be_mono) { | |
| 1398 | |
| 1399 // We have a path that was monomorphic but was going interpreted | |
| 1400 // and now we have (or had) a compiled entry. We correct the IC | |
| 1401 // by using a new icBuffer. | |
| 1402 CompiledICInfo info; | |
| 1403 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
| 1404 inline_cache->compute_monomorphic_entry(callee_method, | |
| 1405 receiver_klass, | |
| 1406 inline_cache->is_optimized(), | |
| 1407 false, | |
| 1408 info, CHECK_(methodHandle())); | |
| 1409 inline_cache->set_to_monomorphic(info); | |
| 1410 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
| 1411 // Change to megamorphic | |
| 1412 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
| 1413 } else { | |
| 1414 // Either clean or megamorphic | |
| 1415 } | |
| 1416 } | |
| 1417 } // Release CompiledIC_lock | |
| 1418 | |
| 1419 return callee_method; | |
| 1420 } | |
| 1421 | |
| 1422 // | |
| 1423 // Resets a call-site in compiled code so it will get resolved again. | |
| 1424 // This routines handles both virtual call sites, optimized virtual call | |
| 1425 // sites, and static call sites. Typically used to change a call sites | |
| 1426 // destination from compiled to interpreted. | |
| 1427 // | |
| 1428 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
| 1429 ResourceMark rm(thread); | |
| 1430 RegisterMap reg_map(thread, false); | |
| 1431 frame stub_frame = thread->last_frame(); | |
| 1432 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
| 1433 frame caller = stub_frame.sender(®_map); | |
| 1434 | |
| 1435 // Do nothing if the frame isn't a live compiled frame. | |
| 1436 // nmethod could be deoptimized by the time we get here | |
| 1437 // so no update to the caller is needed. | |
| 1438 | |
| 1439 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
| 1440 | |
| 1441 address pc = caller.pc(); | |
| 1442 Events::log("update call-site at pc " INTPTR_FORMAT, pc); | |
| 1443 | |
| 1444 // Default call_addr is the location of the "basic" call. | |
| 1445 // Determine the address of the call we a reresolving. With | |
| 1446 // Inline Caches we will always find a recognizable call. | |
| 1447 // With Inline Caches disabled we may or may not find a | |
| 1448 // recognizable call. We will always find a call for static | |
| 1449 // calls and for optimized virtual calls. For vanilla virtual | |
| 1450 // calls it depends on the state of the UseInlineCaches switch. | |
| 1451 // | |
| 1452 // With Inline Caches disabled we can get here for a virtual call | |
| 1453 // for two reasons: | |
| 1454 // 1 - calling an abstract method. The vtable for abstract methods | |
| 1455 // will run us thru handle_wrong_method and we will eventually | |
| 1456 // end up in the interpreter to throw the ame. | |
| 1457 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
| 1458 // call and between the time we fetch the entry address and | |
| 1459 // we jump to it the target gets deoptimized. Similar to 1 | |
| 1460 // we will wind up in the interprter (thru a c2i with c2). | |
| 1461 // | |
| 1462 address call_addr = NULL; | |
| 1463 { | |
| 1464 // Get call instruction under lock because another thread may be | |
| 1465 // busy patching it. | |
| 1466 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1467 // Location of call instruction | |
| 1468 if (NativeCall::is_call_before(pc)) { | |
| 1469 NativeCall *ncall = nativeCall_before(pc); | |
| 1470 call_addr = ncall->instruction_address(); | |
| 1471 } | |
| 1472 } | |
| 1473 | |
| 1474 // Check for static or virtual call | |
| 1475 bool is_static_call = false; | |
| 1476 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
| 1477 // Make sure nmethod doesn't get deoptimized and removed until | |
| 1478 // this is done with it. | |
| 1479 // CLEANUP - with lazy deopt shouldn't need this lock | |
| 1480 nmethodLocker nmlock(caller_nm); | |
| 1481 | |
| 1482 if (call_addr != NULL) { | |
| 1483 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
| 1484 int ret = iter.next(); // Get item | |
| 1485 if (ret) { | |
| 1486 assert(iter.addr() == call_addr, "must find call"); | |
| 1487 if (iter.type() == relocInfo::static_call_type) { | |
| 1488 is_static_call = true; | |
| 1489 } else { | |
| 1490 assert(iter.type() == relocInfo::virtual_call_type || | |
| 1491 iter.type() == relocInfo::opt_virtual_call_type | |
| 1492 , "unexpected relocInfo. type"); | |
| 1493 } | |
| 1494 } else { | |
| 1495 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
| 1496 } | |
| 1497 | |
| 1498 // Cleaning the inline cache will force a new resolve. This is more robust | |
| 1499 // than directly setting it to the new destination, since resolving of calls | |
| 1500 // is always done through the same code path. (experience shows that it | |
| 1501 // leads to very hard to track down bugs, if an inline cache gets updated | |
| 1502 // to a wrong method). It should not be performance critical, since the | |
| 1503 // resolve is only done once. | |
| 1504 | |
| 1505 MutexLocker ml(CompiledIC_lock); | |
| 1506 // | |
| 1507 // We do not patch the call site if the nmethod has been made non-entrant | |
| 1508 // as it is a waste of time | |
| 1509 // | |
| 1510 if (caller_nm->is_in_use()) { | |
| 1511 if (is_static_call) { | |
| 1512 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
| 1513 ssc->set_to_clean(); | |
| 1514 } else { | |
| 1515 // compiled, dispatched call (which used to call an interpreted method) | |
| 1516 CompiledIC* inline_cache = CompiledIC_at(call_addr); | |
| 1517 inline_cache->set_to_clean(); | |
| 1518 } | |
| 1519 } | |
| 1520 } | |
| 1521 | |
| 1522 } | |
| 1523 | |
| 1524 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
| 1525 | |
| 1526 | |
| 1527 #ifndef PRODUCT | |
| 1528 Atomic::inc(&_wrong_method_ctr); | |
| 1529 | |
| 1530 if (TraceCallFixup) { | |
| 1531 ResourceMark rm(thread); | |
| 1532 tty->print("handle_wrong_method reresolving call to"); | |
| 1533 callee_method->print_short_name(tty); | |
| 1534 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
| 1535 } | |
| 1536 #endif | |
| 1537 | |
| 1538 return callee_method; | |
| 1539 } | |
| 1540 | |
| 1541 // --------------------------------------------------------------------------- | |
| 1542 // We are calling the interpreter via a c2i. Normally this would mean that | |
| 1543 // we were called by a compiled method. However we could have lost a race | |
| 1544 // where we went int -> i2c -> c2i and so the caller could in fact be | |
| 1205 | 1545 // interpreted. If the caller is compiled we attempt to patch the caller |
| 0 | 1546 // so he no longer calls into the interpreter. |
| 1547 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(methodOopDesc* method, address caller_pc)) | |
| 1548 methodOop moop(method); | |
| 1549 | |
| 1550 address entry_point = moop->from_compiled_entry(); | |
| 1551 | |
| 1552 // It's possible that deoptimization can occur at a call site which hasn't | |
| 1553 // been resolved yet, in which case this function will be called from | |
| 1554 // an nmethod that has been patched for deopt and we can ignore the | |
| 1555 // request for a fixup. | |
| 1556 // Also it is possible that we lost a race in that from_compiled_entry | |
| 1557 // is now back to the i2c in that case we don't need to patch and if | |
| 1558 // we did we'd leap into space because the callsite needs to use | |
| 1559 // "to interpreter" stub in order to load up the methodOop. Don't | |
| 1560 // ask me how I know this... | |
| 1561 | |
| 1562 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
| 1205 | 1563 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
| 1564 return; | |
| 1565 } | |
| 1566 | |
| 1567 // The check above makes sure this is a nmethod. | |
| 1568 nmethod* nm = cb->as_nmethod_or_null(); | |
| 1569 assert(nm, "must be"); | |
| 1570 | |
| 1571 // Don't fixup MethodHandle call sites as c2i/i2c adapters are used | |
| 1572 // to implement MethodHandle actions. | |
| 1573 if (nm->is_method_handle_return(caller_pc)) { | |
| 0 | 1574 return; |
| 1575 } | |
| 1576 | |
| 1577 // There is a benign race here. We could be attempting to patch to a compiled | |
| 1578 // entry point at the same time the callee is being deoptimized. If that is | |
| 1579 // the case then entry_point may in fact point to a c2i and we'd patch the | |
| 1580 // call site with the same old data. clear_code will set code() to NULL | |
| 1581 // at the end of it. If we happen to see that NULL then we can skip trying | |
| 1582 // to patch. If we hit the window where the callee has a c2i in the | |
| 1583 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
| 1584 // and patch the code with the same old data. Asi es la vida. | |
| 1585 | |
| 1586 if (moop->code() == NULL) return; | |
| 1587 | |
| 1205 | 1588 if (nm->is_in_use()) { |
| 0 | 1589 |
| 1590 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
| 1591 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
| 1592 if (NativeCall::is_call_before(caller_pc + frame::pc_return_offset)) { | |
| 1593 NativeCall *call = nativeCall_before(caller_pc + frame::pc_return_offset); | |
| 1594 // | |
| 1595 // bug 6281185. We might get here after resolving a call site to a vanilla | |
| 1596 // virtual call. Because the resolvee uses the verified entry it may then | |
| 1597 // see compiled code and attempt to patch the site by calling us. This would | |
| 1598 // then incorrectly convert the call site to optimized and its downhill from | |
| 1599 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
| 1600 // just made a call site that could be megamorphic into a monomorphic site | |
| 1601 // for the rest of its life! Just another racing bug in the life of | |
| 1602 // fixup_callers_callsite ... | |
| 1603 // | |
|
1563
1a5913bf5e19
6951083: oops and relocations should part of nmethod not CodeBlob
twisti
parents:
1507
diff
changeset
|
1604 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
| 0 | 1605 iter.next(); |
| 1606 assert(iter.has_current(), "must have a reloc at java call site"); | |
| 1607 relocInfo::relocType typ = iter.reloc()->type(); | |
| 1608 if ( typ != relocInfo::static_call_type && | |
| 1609 typ != relocInfo::opt_virtual_call_type && | |
| 1610 typ != relocInfo::static_stub_type) { | |
| 1611 return; | |
| 1612 } | |
| 1613 address destination = call->destination(); | |
| 1614 if (destination != entry_point) { | |
| 1615 CodeBlob* callee = CodeCache::find_blob(destination); | |
| 1616 // callee == cb seems weird. It means calling interpreter thru stub. | |
| 1617 if (callee == cb || callee->is_adapter_blob()) { | |
| 1618 // static call or optimized virtual | |
| 1619 if (TraceCallFixup) { | |
| 1204 | 1620 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1621 moop->print_short_name(tty); |
| 1622 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1623 } | |
| 1624 call->set_destination_mt_safe(entry_point); | |
| 1625 } else { | |
| 1626 if (TraceCallFixup) { | |
| 1627 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
| 1628 moop->print_short_name(tty); | |
| 1629 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1630 } | |
| 1631 // assert is too strong could also be resolve destinations. | |
| 1632 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
| 1633 } | |
| 1634 } else { | |
| 1635 if (TraceCallFixup) { | |
| 1204 | 1636 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
| 0 | 1637 moop->print_short_name(tty); |
| 1638 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
| 1639 } | |
| 1640 } | |
| 1641 } | |
| 1642 } | |
| 1643 | |
| 1644 IRT_END | |
| 1645 | |
| 1646 | |
| 1647 // same as JVM_Arraycopy, but called directly from compiled code | |
| 1648 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
| 1649 oopDesc* dest, jint dest_pos, | |
| 1650 jint length, | |
| 1651 JavaThread* thread)) { | |
| 1652 #ifndef PRODUCT | |
| 1653 _slow_array_copy_ctr++; | |
| 1654 #endif | |
| 1655 // Check if we have null pointers | |
| 1656 if (src == NULL || dest == NULL) { | |
| 1657 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1658 } | |
| 1659 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
| 1660 // even though the copy_array API also performs dynamic checks to ensure | |
| 1661 // that src and dest are truly arrays (and are conformable). | |
| 1662 // The copy_array mechanism is awkward and could be removed, but | |
| 1663 // the compilers don't call this function except as a last resort, | |
| 1664 // so it probably doesn't matter. | |
| 1665 Klass::cast(src->klass())->copy_array((arrayOopDesc*)src, src_pos, | |
| 1666 (arrayOopDesc*)dest, dest_pos, | |
| 1667 length, thread); | |
| 1668 } | |
| 1669 JRT_END | |
| 1670 | |
| 1671 char* SharedRuntime::generate_class_cast_message( | |
| 1672 JavaThread* thread, const char* objName) { | |
| 1673 | |
| 1674 // Get target class name from the checkcast instruction | |
| 1675 vframeStream vfst(thread, true); | |
| 1676 assert(!vfst.at_end(), "Java frame must exist"); | |
| 2142 | 1677 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
| 0 | 1678 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at( |
| 2142 | 1679 cc.index(), thread)); |
| 0 | 1680 return generate_class_cast_message(objName, targetKlass->external_name()); |
| 1681 } | |
| 1682 | |
| 710 | 1683 char* SharedRuntime::generate_wrong_method_type_message(JavaThread* thread, |
| 1684 oopDesc* required, | |
| 1685 oopDesc* actual) { | |
|
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1686 if (TraceMethodHandles) { |
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1687 tty->print_cr("WrongMethodType thread="PTR_FORMAT" req="PTR_FORMAT" act="PTR_FORMAT"", |
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1688 thread, required, actual); |
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1689 } |
| 710 | 1690 assert(EnableMethodHandles, ""); |
| 1691 oop singleKlass = wrong_method_type_is_for_single_argument(thread, required); | |
|
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1692 char* message = NULL; |
| 710 | 1693 if (singleKlass != NULL) { |
| 1694 const char* objName = "argument or return value"; | |
| 1695 if (actual != NULL) { | |
| 1696 // be flexible about the junk passed in: | |
| 1697 klassOop ak = (actual->is_klass() | |
| 1698 ? (klassOop)actual | |
| 1699 : actual->klass()); | |
| 1700 objName = Klass::cast(ak)->external_name(); | |
| 1701 } | |
| 1702 Klass* targetKlass = Klass::cast(required->is_klass() | |
| 1703 ? (klassOop)required | |
| 1704 : java_lang_Class::as_klassOop(required)); | |
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1705 message = generate_class_cast_message(objName, targetKlass->external_name()); |
| 710 | 1706 } else { |
| 1707 // %%% need to get the MethodType string, without messing around too much | |
| 1708 // Get a signature from the invoke instruction | |
| 1709 const char* mhName = "method handle"; | |
| 1710 const char* targetType = "the required signature"; | |
| 1711 vframeStream vfst(thread, true); | |
| 1712 if (!vfst.at_end()) { | |
| 2142 | 1713 Bytecode_invoke call(vfst.method(), vfst.bci()); |
| 710 | 1714 methodHandle target; |
| 1715 { | |
| 1716 EXCEPTION_MARK; | |
| 2142 | 1717 target = call.static_target(THREAD); |
| 710 | 1718 if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; } |
| 1719 } | |
| 1720 if (target.not_null() | |
| 1721 && target->is_method_handle_invoke() | |
| 1722 && required == target->method_handle_type()) { | |
| 1723 targetType = target->signature()->as_C_string(); | |
| 1724 } | |
| 1725 } | |
| 1726 klassOop kignore; int fignore; | |
| 1727 methodOop actual_method = MethodHandles::decode_method(actual, | |
| 1728 kignore, fignore); | |
| 1729 if (actual_method != NULL) { | |
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1730 if (methodOopDesc::is_method_handle_invoke_name(actual_method->name())) |
| 710 | 1731 mhName = "$"; |
| 1732 else | |
| 1733 mhName = actual_method->signature()->as_C_string(); | |
| 1734 if (mhName[0] == '$') | |
| 1735 mhName = actual_method->signature()->as_C_string(); | |
| 1736 } | |
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1737 message = generate_class_cast_message(mhName, targetType, |
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1738 " cannot be called as "); |
| 710 | 1739 } |
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1740 if (TraceMethodHandles) { |
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1741 tty->print_cr("WrongMethodType => message=%s", message); |
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1742 } |
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1743 return message; |
| 710 | 1744 } |
| 1745 | |
| 1746 oop SharedRuntime::wrong_method_type_is_for_single_argument(JavaThread* thr, | |
| 1747 oopDesc* required) { | |
| 1748 if (required == NULL) return NULL; | |
| 1142 | 1749 if (required->klass() == SystemDictionary::Class_klass()) |
| 710 | 1750 return required; |
| 1751 if (required->is_klass()) | |
| 1752 return Klass::cast(klassOop(required))->java_mirror(); | |
| 1753 return NULL; | |
| 1754 } | |
| 1755 | |
| 1756 | |
| 0 | 1757 char* SharedRuntime::generate_class_cast_message( |
| 710 | 1758 const char* objName, const char* targetKlassName, const char* desc) { |
| 0 | 1759 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
| 1760 | |
| 53 | 1761 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
| 0 | 1762 if (NULL == message) { |
| 53 | 1763 // Shouldn't happen, but don't cause even more problems if it does |
| 0 | 1764 message = const_cast<char*>(objName); |
| 1765 } else { | |
| 1766 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
| 1767 } | |
| 1768 return message; | |
| 1769 } | |
| 1770 | |
| 1771 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
| 1772 (void) JavaThread::current()->reguard_stack(); | |
| 1773 JRT_END | |
| 1774 | |
| 1775 | |
| 1776 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
| 1777 #ifndef PRODUCT | |
| 1778 int SharedRuntime::_monitor_enter_ctr=0; | |
| 1779 #endif | |
| 1780 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
| 1781 oop obj(_obj); | |
| 1782 #ifndef PRODUCT | |
| 1783 _monitor_enter_ctr++; // monitor enter slow | |
| 1784 #endif | |
| 1785 if (PrintBiasedLockingStatistics) { | |
| 1786 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 1787 } | |
| 1788 Handle h_obj(THREAD, obj); | |
| 1789 if (UseBiasedLocking) { | |
| 1790 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 1791 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
| 1792 } else { | |
| 1793 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
| 1794 } | |
| 1795 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
| 1796 JRT_END | |
| 1797 | |
| 1798 #ifndef PRODUCT | |
| 1799 int SharedRuntime::_monitor_exit_ctr=0; | |
| 1800 #endif | |
| 1801 // Handles the uncommon cases of monitor unlocking in compiled code | |
| 1802 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
| 1803 oop obj(_obj); | |
| 1804 #ifndef PRODUCT | |
| 1805 _monitor_exit_ctr++; // monitor exit slow | |
| 1806 #endif | |
| 1807 Thread* THREAD = JavaThread::current(); | |
| 1808 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
| 1809 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
| 1810 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
| 1811 #undef MIGHT_HAVE_PENDING | |
| 1812 #ifdef MIGHT_HAVE_PENDING | |
| 1813 // Save and restore any pending_exception around the exception mark. | |
| 1814 // While the slow_exit must not throw an exception, we could come into | |
| 1815 // this routine with one set. | |
| 1816 oop pending_excep = NULL; | |
| 1817 const char* pending_file; | |
| 1818 int pending_line; | |
| 1819 if (HAS_PENDING_EXCEPTION) { | |
| 1820 pending_excep = PENDING_EXCEPTION; | |
| 1821 pending_file = THREAD->exception_file(); | |
| 1822 pending_line = THREAD->exception_line(); | |
| 1823 CLEAR_PENDING_EXCEPTION; | |
| 1824 } | |
| 1825 #endif /* MIGHT_HAVE_PENDING */ | |
| 1826 | |
| 1827 { | |
| 1828 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
| 1829 EXCEPTION_MARK; | |
| 1830 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
| 1831 } | |
| 1832 | |
| 1833 #ifdef MIGHT_HAVE_PENDING | |
| 1834 if (pending_excep != NULL) { | |
| 1835 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
| 1836 } | |
| 1837 #endif /* MIGHT_HAVE_PENDING */ | |
| 1838 JRT_END | |
| 1839 | |
| 1840 #ifndef PRODUCT | |
| 1841 | |
| 1842 void SharedRuntime::print_statistics() { | |
| 1843 ttyLocker ttyl; | |
| 1844 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
| 1845 | |
| 1846 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
| 1847 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
| 1848 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
| 1849 | |
| 1850 SharedRuntime::print_ic_miss_histogram(); | |
| 1851 | |
| 1852 if (CountRemovableExceptions) { | |
| 1853 if (_nof_removable_exceptions > 0) { | |
| 1854 Unimplemented(); // this counter is not yet incremented | |
| 1855 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
| 1856 } | |
| 1857 } | |
| 1858 | |
| 1859 // Dump the JRT_ENTRY counters | |
| 1860 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
| 1861 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
| 1862 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
| 1863 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
| 1864 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
| 1865 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
| 1866 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
| 1867 | |
| 1868 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
| 1869 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
| 1870 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
| 1871 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
| 1872 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
| 1873 | |
| 1874 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
| 1875 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
| 1876 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
| 1877 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
| 1878 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
| 1879 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
| 1880 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
| 1881 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
| 1882 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
| 1883 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
| 1884 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
| 1885 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
| 1886 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
| 1887 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
| 1888 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
| 1889 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
| 1890 | |
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1891 AdapterHandlerLibrary::print_statistics(); |
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1892 |
| 0 | 1893 if (xtty != NULL) xtty->tail("statistics"); |
| 1894 } | |
| 1895 | |
| 1896 inline double percent(int x, int y) { | |
| 1897 return 100.0 * x / MAX2(y, 1); | |
| 1898 } | |
| 1899 | |
| 1900 class MethodArityHistogram { | |
| 1901 public: | |
| 1902 enum { MAX_ARITY = 256 }; | |
| 1903 private: | |
| 1904 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
| 1905 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
| 1906 static int _max_arity; // max. arity seen | |
| 1907 static int _max_size; // max. arg size seen | |
| 1908 | |
| 1909 static void add_method_to_histogram(nmethod* nm) { | |
| 1910 methodOop m = nm->method(); | |
| 1911 ArgumentCount args(m->signature()); | |
| 1912 int arity = args.size() + (m->is_static() ? 0 : 1); | |
| 1913 int argsize = m->size_of_parameters(); | |
| 1914 arity = MIN2(arity, MAX_ARITY-1); | |
| 1915 argsize = MIN2(argsize, MAX_ARITY-1); | |
| 1916 int count = nm->method()->compiled_invocation_count(); | |
| 1917 _arity_histogram[arity] += count; | |
| 1918 _size_histogram[argsize] += count; | |
| 1919 _max_arity = MAX2(_max_arity, arity); | |
| 1920 _max_size = MAX2(_max_size, argsize); | |
| 1921 } | |
| 1922 | |
| 1923 void print_histogram_helper(int n, int* histo, const char* name) { | |
| 1924 const int N = MIN2(5, n); | |
| 1925 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 1926 double sum = 0; | |
| 1927 double weighted_sum = 0; | |
| 1928 int i; | |
| 1929 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
| 1930 double rest = sum; | |
| 1931 double percent = sum / 100; | |
| 1932 for (i = 0; i <= N; i++) { | |
| 1933 rest -= histo[i]; | |
| 1934 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
| 1935 } | |
| 1936 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
| 1937 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
| 1938 } | |
| 1939 | |
| 1940 void print_histogram() { | |
| 1941 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
| 1942 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
| 1943 tty->print_cr("\nSame for parameter size (in words):"); | |
| 1944 print_histogram_helper(_max_size, _size_histogram, "size"); | |
| 1945 tty->cr(); | |
| 1946 } | |
| 1947 | |
| 1948 public: | |
| 1949 MethodArityHistogram() { | |
| 1950 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
| 1951 _max_arity = _max_size = 0; | |
| 1952 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
| 1953 CodeCache::nmethods_do(add_method_to_histogram); | |
| 1954 print_histogram(); | |
| 1955 } | |
| 1956 }; | |
| 1957 | |
| 1958 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 1959 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
| 1960 int MethodArityHistogram::_max_arity; | |
| 1961 int MethodArityHistogram::_max_size; | |
| 1962 | |
| 1963 void SharedRuntime::print_call_statistics(int comp_total) { | |
| 1964 tty->print_cr("Calls from compiled code:"); | |
| 1965 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
| 1966 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
| 1967 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
| 1968 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
| 1969 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
| 1970 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
| 1971 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
| 1972 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
| 1973 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
| 1974 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
| 1975 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
| 1976 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
| 1977 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
| 1978 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
| 1979 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
| 1980 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
| 1981 tty->cr(); | |
| 1982 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
| 1983 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
| 1984 tty->print_cr(" %% in nested categories are relative to their category"); | |
| 1985 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
| 1986 tty->cr(); | |
| 1987 | |
| 1988 MethodArityHistogram h; | |
| 1989 } | |
| 1990 #endif | |
| 1991 | |
| 1992 | |
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1993 // A simple wrapper class around the calling convention information |
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1994 // that allows sharing of adapters for the same calling convention. |
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1995 class AdapterFingerPrint : public CHeapObj { |
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1996 private: |
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1997 union { |
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1998 int _compact[3]; |
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1999 int* _fingerprint; |
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2000 } _value; |
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2001 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2002 // Otherwise _value._fingerprint is the array. |
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2003 |
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2004 // Remap BasicTypes that are handled equivalently by the adapters. |
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2005 // These are correct for the current system but someday it might be |
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2006 // necessary to make this mapping platform dependent. |
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2007 static BasicType adapter_encoding(BasicType in) { |
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2008 assert((~0xf & in) == 0, "must fit in 4 bits"); |
|
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|
2009 switch(in) { |
|
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|
2010 case T_BOOLEAN: |
|
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|
2011 case T_BYTE: |
|
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|
2012 case T_SHORT: |
|
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|
2013 case T_CHAR: |
|
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|
2014 // There are all promoted to T_INT in the calling convention |
|
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|
2015 return T_INT; |
|
1187
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diff
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|
2016 |
|
1207
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|
2017 case T_OBJECT: |
|
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|
2018 case T_ARRAY: |
|
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|
2019 #ifdef _LP64 |
| 1506 | 2020 return T_LONG; |
|
1207
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|
2021 #else |
| 1506 | 2022 return T_INT; |
|
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|
2023 #endif |
|
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|
2024 |
|
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|
2025 case T_INT: |
|
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|
2026 case T_LONG: |
|
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|
2027 case T_FLOAT: |
|
74c848d437ab
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|
2028 case T_DOUBLE: |
|
74c848d437ab
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changeset
|
2029 case T_VOID: |
|
74c848d437ab
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diff
changeset
|
2030 return in; |
|
74c848d437ab
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changeset
|
2031 |
|
74c848d437ab
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changeset
|
2032 default: |
|
74c848d437ab
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parents:
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diff
changeset
|
2033 ShouldNotReachHere(); |
|
74c848d437ab
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|
2034 return T_CONFLICT; |
|
1187
cf0685d550f1
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diff
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|
2035 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2036 } |
|
cf0685d550f1
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parents:
1142
diff
changeset
|
2037 |
|
1207
74c848d437ab
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|
2038 public: |
|
74c848d437ab
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changeset
|
2039 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
|
74c848d437ab
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|
2040 // The fingerprint is based on the BasicType signature encoded |
|
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|
2041 // into an array of ints with four entries per int. |
|
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|
2042 int* ptr; |
|
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|
2043 int len = (total_args_passed + 3) >> 2; |
|
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|
2044 if (len <= (int)(sizeof(_value._compact) / sizeof(int))) { |
|
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|
2045 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
|
74c848d437ab
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|
2046 // Storing the signature encoded as signed chars hits about 98% |
|
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diff
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|
2047 // of the time. |
|
74c848d437ab
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parents:
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diff
changeset
|
2048 _length = -len; |
|
74c848d437ab
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never
parents:
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diff
changeset
|
2049 ptr = _value._compact; |
|
74c848d437ab
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never
parents:
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diff
changeset
|
2050 } else { |
|
74c848d437ab
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parents:
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diff
changeset
|
2051 _length = len; |
|
74c848d437ab
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changeset
|
2052 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length); |
|
74c848d437ab
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parents:
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diff
changeset
|
2053 ptr = _value._fingerprint; |
|
74c848d437ab
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never
parents:
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diff
changeset
|
2054 } |
|
74c848d437ab
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never
parents:
1205
diff
changeset
|
2055 |
|
74c848d437ab
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parents:
1205
diff
changeset
|
2056 // Now pack the BasicTypes with 4 per int |
|
74c848d437ab
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never
parents:
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diff
changeset
|
2057 int sig_index = 0; |
|
74c848d437ab
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never
parents:
1205
diff
changeset
|
2058 for (int index = 0; index < len; index++) { |
|
74c848d437ab
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parents:
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diff
changeset
|
2059 int value = 0; |
|
74c848d437ab
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never
parents:
1205
diff
changeset
|
2060 for (int byte = 0; byte < 4; byte++) { |
|
74c848d437ab
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changeset
|
2061 if (sig_index < total_args_passed) { |
|
74c848d437ab
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parents:
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changeset
|
2062 value = (value << 4) | adapter_encoding(sig_bt[sig_index++]); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2063 } |
|
74c848d437ab
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parents:
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diff
changeset
|
2064 } |
|
74c848d437ab
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never
parents:
1205
diff
changeset
|
2065 ptr[index] = value; |
|
74c848d437ab
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parents:
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diff
changeset
|
2066 } |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2067 } |
|
cf0685d550f1
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parents:
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diff
changeset
|
2068 |
|
cf0685d550f1
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parents:
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diff
changeset
|
2069 ~AdapterFingerPrint() { |
|
cf0685d550f1
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parents:
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diff
changeset
|
2070 if (_length > 0) { |
|
cf0685d550f1
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parents:
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diff
changeset
|
2071 FREE_C_HEAP_ARRAY(int, _value._fingerprint); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2072 } |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2073 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2074 |
|
1207
74c848d437ab
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diff
changeset
|
2075 int value(int index) { |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2076 if (_length < 0) { |
|
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2077 return _value._compact[index]; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2078 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2079 return _value._fingerprint[index]; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2080 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2081 int length() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2082 if (_length < 0) return -_length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2083 return _length; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2084 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2085 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2086 bool is_compact() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2087 return _length <= 0; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2088 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2089 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2090 unsigned int compute_hash() { |
|
1207
74c848d437ab
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parents:
1205
diff
changeset
|
2091 int hash = 0; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2092 for (int i = 0; i < length(); i++) { |
|
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2093 int v = value(i); |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2094 hash = (hash << 8) ^ v ^ (hash >> 5); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2095 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2096 return (unsigned int)hash; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2097 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2098 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2099 const char* as_string() { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2100 stringStream st; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2101 for (int i = 0; i < length(); i++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2102 st.print(PTR_FORMAT, value(i)); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2103 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2104 return st.as_string(); |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2105 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2106 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2107 bool equals(AdapterFingerPrint* other) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2108 if (other->_length != _length) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2109 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2110 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2111 if (_length < 0) { |
|
1207
74c848d437ab
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changeset
|
2112 return _value._compact[0] == other->_value._compact[0] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2113 _value._compact[1] == other->_value._compact[1] && |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2114 _value._compact[2] == other->_value._compact[2]; |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2115 } else { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2116 for (int i = 0; i < _length; i++) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2117 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2118 return false; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2119 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2120 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2121 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2122 return true; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2123 } |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2124 }; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2125 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2126 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2127 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2128 class AdapterHandlerTable : public BasicHashtable { |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2129 friend class AdapterHandlerTableIterator; |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2130 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2131 private: |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2132 |
|
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2133 #ifndef PRODUCT |
|
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2134 static int _lookups; // number of calls to lookup |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2135 static int _buckets; // number of buckets checked |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2136 static int _equals; // number of buckets checked with matching hash |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2137 static int _hits; // number of successful lookups |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2138 static int _compact; // number of equals calls with compact signature |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2139 #endif |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2140 |
|
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2141 AdapterHandlerEntry* bucket(int i) { |
|
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|
2142 return (AdapterHandlerEntry*)BasicHashtable::bucket(i); |
|
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|
2143 } |
|
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|
2144 |
|
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|
2145 public: |
|
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|
2146 AdapterHandlerTable() |
|
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|
2147 : BasicHashtable(293, sizeof(AdapterHandlerEntry)) { } |
|
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|
2148 |
|
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|
2149 // Create a new entry suitable for insertion in the table |
|
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|
2150 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
|
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|
2151 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable::new_entry(fingerprint->compute_hash()); |
|
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2152 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
|
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|
2153 return entry; |
|
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|
2154 } |
|
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|
2155 |
|
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|
2156 // Insert an entry into the table |
|
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|
2157 void add(AdapterHandlerEntry* entry) { |
|
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|
2158 int index = hash_to_index(entry->hash()); |
|
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|
2159 add_entry(index, entry); |
|
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|
2160 } |
|
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|
2161 |
|
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|
2162 void free_entry(AdapterHandlerEntry* entry) { |
|
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|
2163 entry->deallocate(); |
|
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|
2164 BasicHashtable::free_entry(entry); |
|
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|
2165 } |
|
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parents:
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diff
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|
2166 |
|
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|
2167 // Find a entry with the same fingerprint if it exists |
|
1207
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|
2168 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
|
1263
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|
2169 NOT_PRODUCT(_lookups++); |
|
1207
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|
2170 AdapterFingerPrint fp(total_args_passed, sig_bt); |
|
1187
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|
2171 unsigned int hash = fp.compute_hash(); |
|
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|
2172 int index = hash_to_index(hash); |
|
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|
2173 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
1263
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|
2174 NOT_PRODUCT(_buckets++); |
|
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|
2175 if (e->hash() == hash) { |
|
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|
2176 NOT_PRODUCT(_equals++); |
|
1187
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|
2177 if (fp.equals(e->fingerprint())) { |
|
1263
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|
2178 #ifndef PRODUCT |
|
1187
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|
2179 if (fp.is_compact()) _compact++; |
|
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|
2180 _hits++; |
|
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|
2181 #endif |
|
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|
2182 return e; |
|
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|
2183 } |
|
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|
2184 } |
|
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|
2185 } |
|
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|
2186 return NULL; |
|
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|
2187 } |
|
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|
2188 |
|
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|
2189 #ifndef PRODUCT |
|
1187
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|
2190 void print_statistics() { |
|
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|
2191 ResourceMark rm; |
|
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|
2192 int longest = 0; |
|
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|
2193 int empty = 0; |
|
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|
2194 int total = 0; |
|
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|
2195 int nonempty = 0; |
|
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|
2196 for (int index = 0; index < table_size(); index++) { |
|
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|
2197 int count = 0; |
|
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|
2198 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
|
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|
2199 count++; |
|
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|
2200 } |
|
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|
2201 if (count != 0) nonempty++; |
|
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|
2202 if (count == 0) empty++; |
|
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|
2203 if (count > longest) longest = count; |
|
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diff
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|
2204 total += count; |
|
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|
2205 } |
|
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|
2206 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
|
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|
2207 empty, longest, total, total / (double)nonempty); |
|
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|
2208 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
|
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|
2209 _lookups, _buckets, _equals, _hits, _compact); |
|
1263
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|
2210 } |
|
1187
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|
2211 #endif |
|
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|
2212 }; |
|
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|
2213 |
|
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|
2214 |
|
1263
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changeset
|
2215 #ifndef PRODUCT |
|
1187
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|
2216 |
|
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|
2217 int AdapterHandlerTable::_lookups; |
|
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|
2218 int AdapterHandlerTable::_buckets; |
|
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|
2219 int AdapterHandlerTable::_equals; |
|
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|
2220 int AdapterHandlerTable::_hits; |
|
cf0685d550f1
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|
2221 int AdapterHandlerTable::_compact; |
|
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|
2222 |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
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|
2223 #endif |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
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diff
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|
2224 |
|
1187
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|
2225 class AdapterHandlerTableIterator : public StackObj { |
|
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|
2226 private: |
|
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|
2227 AdapterHandlerTable* _table; |
|
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|
2228 int _index; |
|
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|
2229 AdapterHandlerEntry* _current; |
|
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|
2230 |
|
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|
2231 void scan() { |
|
cf0685d550f1
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|
2232 while (_index < _table->table_size()) { |
|
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|
2233 AdapterHandlerEntry* a = _table->bucket(_index); |
| 1564 | 2234 _index++; |
|
1187
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|
2235 if (a != NULL) { |
|
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|
2236 _current = a; |
|
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|
2237 return; |
|
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|
2238 } |
|
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|
2239 } |
|
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|
2240 } |
|
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|
2241 |
|
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|
2242 public: |
|
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|
2243 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
|
cf0685d550f1
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|
2244 scan(); |
|
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|
2245 } |
|
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|
2246 bool has_next() { |
|
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|
2247 return _current != NULL; |
|
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|
2248 } |
|
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|
2249 AdapterHandlerEntry* next() { |
|
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|
2250 if (_current != NULL) { |
|
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|
2251 AdapterHandlerEntry* result = _current; |
|
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|
2252 _current = _current->next(); |
|
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diff
changeset
|
2253 if (_current == NULL) scan(); |
|
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|
2254 return result; |
|
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diff
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|
2255 } else { |
|
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|
2256 return NULL; |
|
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|
2257 } |
|
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|
2258 } |
|
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|
2259 }; |
|
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|
2260 |
|
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|
2261 |
| 0 | 2262 // --------------------------------------------------------------------------- |
| 2263 // Implementation of AdapterHandlerLibrary | |
|
1187
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|
2264 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
|
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|
2265 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
| 0 | 2266 const int AdapterHandlerLibrary_size = 16*K; |
|
742
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|
2267 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
|
45463a04ca27
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|
2268 |
|
45463a04ca27
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kvn
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changeset
|
2269 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
|
45463a04ca27
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changeset
|
2270 // Should be called only when AdapterHandlerLibrary_lock is active. |
|
45463a04ca27
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|
2271 if (_buffer == NULL) // Initialize lazily |
|
45463a04ca27
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2272 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2273 return _buffer; |
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2274 } |
| 0 | 2275 |
| 2276 void AdapterHandlerLibrary::initialize() { | |
|
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2277 if (_adapters != NULL) return; |
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2278 _adapters = new AdapterHandlerTable(); |
| 0 | 2279 |
| 2280 // Create a special handler for abstract methods. Abstract methods | |
| 2281 // are never compiled so an i2c entry is somewhat meaningless, but | |
| 2282 // fill it in with something appropriate just in case. Pass handle | |
| 2283 // wrong method for the c2i transitions. | |
| 2284 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
|
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2285 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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2286 StubRoutines::throw_AbstractMethodError_entry(), |
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2287 wrong_method, wrong_method); |
| 0 | 2288 } |
| 2289 | |
|
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2290 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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2291 address i2c_entry, |
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2292 address c2i_entry, |
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2293 address c2i_unverified_entry) { |
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2294 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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2295 } |
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2296 |
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2297 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2298 // Use customized signature handler. Need to lock around updates to |
|
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2299 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2300 // and a single writer: this could be fixed if it becomes a |
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2301 // problem). |
| 0 | 2302 |
| 2303 // Get the address of the ic_miss handlers before we grab the | |
| 2304 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
| 2305 // was caused by the initialization of the stubs happening | |
| 2306 // while we held the lock and then notifying jvmti while | |
| 2307 // holding it. This just forces the initialization to be a little | |
| 2308 // earlier. | |
| 2309 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
| 2310 assert(ic_miss != NULL, "must have handler"); | |
| 2311 | |
|
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2312 ResourceMark rm; |
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2313 |
| 1748 | 2314 NOT_PRODUCT(int insts_size); |
|
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2315 AdapterBlob* B = NULL; |
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2316 AdapterHandlerEntry* entry = NULL; |
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2317 AdapterFingerPrint* fingerprint = NULL; |
| 0 | 2318 { |
| 2319 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2320 // make sure data structure is initialized | |
| 2321 initialize(); | |
| 2322 | |
| 2323 if (method->is_abstract()) { | |
|
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2324 return _abstract_method_handler; |
| 0 | 2325 } |
| 2326 | |
|
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2327 // Fill in the signature array, for the calling-convention call. |
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2328 int total_args_passed = method->size_of_parameters(); // All args on stack |
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2329 |
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2330 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2331 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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2332 int i = 0; |
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2333 if (!method->is_static()) // Pass in receiver first |
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2334 sig_bt[i++] = T_OBJECT; |
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2335 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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2336 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2337 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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2338 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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2339 } |
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2340 assert(i == total_args_passed, ""); |
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2341 |
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2342 // Lookup method signature's fingerprint |
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2343 entry = _adapters->lookup(total_args_passed, sig_bt); |
|
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2344 |
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2345 #ifdef ASSERT |
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2346 AdapterHandlerEntry* shared_entry = NULL; |
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2347 if (VerifyAdapterSharing && entry != NULL) { |
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2348 shared_entry = entry; |
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2349 entry = NULL; |
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2350 } |
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2351 #endif |
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2352 |
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2353 if (entry != NULL) { |
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2354 return entry; |
| 0 | 2355 } |
| 2356 | |
|
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2357 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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2358 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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2359 |
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2360 // Make a C heap allocated version of the fingerprint to store in the adapter |
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2361 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
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2362 |
| 0 | 2363 // Create I2C & C2I handlers |
| 2364 | |
|
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2365 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
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2366 if (buf != NULL) { |
| 1748 | 2367 CodeBuffer buffer(buf); |
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2368 short buffer_locs[20]; |
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2369 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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2370 sizeof(buffer_locs)/sizeof(relocInfo)); |
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2371 MacroAssembler _masm(&buffer); |
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2372 |
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2373 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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2374 total_args_passed, |
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2375 comp_args_on_stack, |
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2376 sig_bt, |
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2377 regs, |
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|
2378 fingerprint); |
| 0 | 2379 |
|
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2380 #ifdef ASSERT |
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2381 if (VerifyAdapterSharing) { |
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2382 if (shared_entry != NULL) { |
| 1748 | 2383 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
|
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2384 "code must match"); |
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2385 // Release the one just created and return the original |
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2386 _adapters->free_entry(entry); |
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2387 return shared_entry; |
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2388 } else { |
| 1748 | 2389 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
|
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2390 } |
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2391 } |
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2392 #endif |
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2393 |
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2394 B = AdapterBlob::create(&buffer); |
| 1748 | 2395 NOT_PRODUCT(insts_size = buffer.insts_size()); |
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2396 } |
| 28 | 2397 if (B == NULL) { |
| 2398 // CodeCache is full, disable compilation | |
| 2399 // Ought to log this but compile log is only per compile thread | |
| 2400 // and we're some non descript Java thread. | |
| 1202 | 2401 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
| 2402 CompileBroker::handle_full_code_cache(); | |
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2403 return NULL; // Out of CodeCache space |
| 28 | 2404 } |
| 1748 | 2405 entry->relocate(B->content_begin()); |
| 0 | 2406 #ifndef PRODUCT |
| 2407 // debugging suppport | |
| 2408 if (PrintAdapterHandlers) { | |
| 2409 tty->cr(); | |
|
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2410 tty->print_cr("i2c argument handler #%d for: %s %s (fingerprint = %s, %d bytes generated)", |
|
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2411 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
| 1748 | 2412 method->signature()->as_C_string(), fingerprint->as_string(), insts_size ); |
| 0 | 2413 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
| 1748 | 2414 Disassembler::decode(entry->get_i2c_entry(), entry->get_i2c_entry() + insts_size); |
| 0 | 2415 } |
| 2416 #endif | |
| 2417 | |
|
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2418 _adapters->add(entry); |
| 0 | 2419 } |
| 2420 // Outside of the lock | |
| 2421 if (B != NULL) { | |
| 2422 char blob_id[256]; | |
| 2423 jio_snprintf(blob_id, | |
| 2424 sizeof(blob_id), | |
|
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2425 "%s(%s)@" PTR_FORMAT, |
|
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2426 B->name(), |
|
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2427 fingerprint->as_string(), |
| 1748 | 2428 B->content_begin()); |
| 2429 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
| 0 | 2430 |
| 2431 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
| 1748 | 2432 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
| 0 | 2433 } |
| 2434 } | |
|
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2435 return entry; |
| 0 | 2436 } |
| 2437 | |
| 2438 void AdapterHandlerEntry::relocate(address new_base) { | |
| 2439 ptrdiff_t delta = new_base - _i2c_entry; | |
| 2440 _i2c_entry += delta; | |
| 2441 _c2i_entry += delta; | |
| 2442 _c2i_unverified_entry += delta; | |
| 2443 } | |
| 2444 | |
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2445 |
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2446 void AdapterHandlerEntry::deallocate() { |
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2447 delete _fingerprint; |
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2448 #ifdef ASSERT |
|
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2449 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code); |
|
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2450 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig); |
|
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2451 #endif |
|
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2452 } |
|
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2453 |
|
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diff
changeset
|
2454 |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2455 #ifdef ASSERT |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2456 // Capture the code before relocation so that it can be compared |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2457 // against other versions. If the code is captured after relocation |
|
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2458 // then relative instructions won't be equivalent. |
|
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diff
changeset
|
2459 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
74c848d437ab
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parents:
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diff
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|
2460 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length); |
|
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2461 _code_length = length; |
|
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diff
changeset
|
2462 memcpy(_saved_code, buffer, length); |
|
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diff
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|
2463 _total_args_passed = total_args_passed; |
|
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diff
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|
2464 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed); |
|
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diff
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|
2465 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
|
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|
2466 } |
|
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diff
changeset
|
2467 |
|
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diff
changeset
|
2468 |
|
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diff
changeset
|
2469 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
|
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|
2470 if (length != _code_length) { |
|
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parents:
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diff
changeset
|
2471 return false; |
|
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diff
changeset
|
2472 } |
|
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diff
changeset
|
2473 for (int i = 0; i < length; i++) { |
|
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diff
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|
2474 if (buffer[i] != _saved_code[i]) { |
|
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|
2475 return false; |
|
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diff
changeset
|
2476 } |
|
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diff
changeset
|
2477 } |
|
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diff
changeset
|
2478 return true; |
|
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diff
changeset
|
2479 } |
|
74c848d437ab
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diff
changeset
|
2480 #endif |
|
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|
2481 |
|
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|
2482 |
| 0 | 2483 // Create a native wrapper for this native method. The wrapper converts the |
| 2484 // java compiled calling convention to the native convention, handlizes | |
| 2485 // arguments, and transitions to native. On return from the native we transition | |
| 2486 // back to java blocking if a safepoint is in progress. | |
| 2487 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method) { | |
| 2488 ResourceMark rm; | |
| 2489 nmethod* nm = NULL; | |
| 2490 | |
| 2491 if (PrintCompilation) { | |
| 2492 ttyLocker ttyl; | |
| 2493 tty->print("--- n%s ", (method->is_synchronized() ? "s" : " ")); | |
| 2494 method->print_short_name(tty); | |
| 2495 if (method->is_static()) { | |
| 2496 tty->print(" (static)"); | |
| 2497 } | |
| 2498 tty->cr(); | |
| 2499 } | |
| 2500 | |
| 2501 assert(method->has_native_function(), "must have something valid to call!"); | |
| 2502 | |
| 2503 { | |
| 2504 // perform the work while holding the lock, but perform any printing outside the lock | |
| 2505 MutexLocker mu(AdapterHandlerLibrary_lock); | |
| 2506 // See if somebody beat us to it | |
| 2507 nm = method->code(); | |
| 2508 if (nm) { | |
| 2509 return nm; | |
| 2510 } | |
| 2511 | |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2512 ResourceMark rm; |
| 0 | 2513 |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2514 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2515 if (buf != NULL) { |
| 1748 | 2516 CodeBuffer buffer(buf); |
|
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2517 double locs_buf[20]; |
|
45463a04ca27
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diff
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|
2518 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
45463a04ca27
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|
2519 MacroAssembler _masm(&buffer); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2520 |
|
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2521 // Fill in the signature array, for the calling-convention call. |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2522 int total_args_passed = method->size_of_parameters(); |
| 0 | 2523 |
|
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2524 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed); |
|
45463a04ca27
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|
2525 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair,total_args_passed); |
|
45463a04ca27
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|
2526 int i=0; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2527 if( !method->is_static() ) // Pass in receiver first |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2528 sig_bt[i++] = T_OBJECT; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2529 SignatureStream ss(method->signature()); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2530 for( ; !ss.at_return_type(); ss.next()) { |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2531 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
|
45463a04ca27
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|
2532 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2533 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2534 } |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2535 assert( i==total_args_passed, "" ); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2536 BasicType ret_type = ss.type(); |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2537 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2538 // Now get the compiled-Java layout as input arguments |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2539 int comp_args_on_stack; |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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710
diff
changeset
|
2540 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
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diff
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|
2541 |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2542 // Generate the compiled-to-native wrapper code |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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710
diff
changeset
|
2543 nm = SharedRuntime::generate_native_wrapper(&_masm, |
|
45463a04ca27
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diff
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|
2544 method, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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710
diff
changeset
|
2545 total_args_passed, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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710
diff
changeset
|
2546 comp_args_on_stack, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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diff
changeset
|
2547 sig_bt,regs, |
|
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2548 ret_type); |
| 0 | 2549 } |
| 2550 } | |
| 2551 | |
| 2552 // Must unlock before calling set_code | |
|
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2553 |
| 0 | 2554 // Install the generated code. |
| 2555 if (nm != NULL) { | |
| 2556 method->set_code(method, nm); | |
| 2557 nm->post_compiled_method_load_event(); | |
| 2558 } else { | |
| 2559 // CodeCache is full, disable compilation | |
| 1202 | 2560 CompileBroker::handle_full_code_cache(); |
| 0 | 2561 } |
| 2562 return nm; | |
| 2563 } | |
| 2564 | |
|
116
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kamg
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diff
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|
2565 #ifdef HAVE_DTRACE_H |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2566 // Create a dtrace nmethod for this method. The wrapper converts the |
|
018d5b58dd4f
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62
diff
changeset
|
2567 // java compiled calling convention to the native convention, makes a dummy call |
|
018d5b58dd4f
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62
diff
changeset
|
2568 // (actually nops for the size of the call instruction, which become a trap if |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2569 // 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
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62
diff
changeset
|
2570 // leaf no thread transition is needed. |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2571 |
|
018d5b58dd4f
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diff
changeset
|
2572 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
|
018d5b58dd4f
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diff
changeset
|
2573 ResourceMark rm; |
|
018d5b58dd4f
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62
diff
changeset
|
2574 nmethod* nm = NULL; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2575 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2576 if (PrintCompilation) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2577 ttyLocker ttyl; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2578 tty->print("--- n%s "); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2579 method->print_short_name(tty); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2580 if (method->is_static()) { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2581 tty->print(" (static)"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2582 } |
|
018d5b58dd4f
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diff
changeset
|
2583 tty->cr(); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2584 } |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2585 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2586 { |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2587 // perform the work while holding the lock, but perform any printing |
|
018d5b58dd4f
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diff
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|
2588 // outside the lock |
|
018d5b58dd4f
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diff
changeset
|
2589 MutexLocker mu(AdapterHandlerLibrary_lock); |
|
018d5b58dd4f
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62
diff
changeset
|
2590 // See if somebody beat us to it |
|
018d5b58dd4f
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diff
changeset
|
2591 nm = method->code(); |
|
018d5b58dd4f
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diff
changeset
|
2592 if (nm) { |
|
018d5b58dd4f
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diff
changeset
|
2593 return nm; |
|
018d5b58dd4f
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diff
changeset
|
2594 } |
|
018d5b58dd4f
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changeset
|
2595 |
|
742
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changeset
|
2596 ResourceMark rm; |
|
45463a04ca27
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|
2597 |
|
45463a04ca27
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|
2598 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
|
45463a04ca27
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|
2599 if (buf != NULL) { |
| 1748 | 2600 CodeBuffer buffer(buf); |
|
742
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changeset
|
2601 // Need a few relocation entries |
|
45463a04ca27
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|
2602 double locs_buf[20]; |
|
45463a04ca27
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|
2603 buffer.insts()->initialize_shared_locs( |
|
116
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|
2604 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
|
742
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|
2605 MacroAssembler _masm(&buffer); |
|
116
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|
2606 |
|
742
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|
2607 // Generate the compiled-to-native wrapper code |
|
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|
2608 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
|
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|
2609 } |
|
116
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|
2610 } |
|
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|
2611 return nm; |
|
018d5b58dd4f
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|
2612 } |
|
018d5b58dd4f
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changeset
|
2613 |
|
018d5b58dd4f
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2614 // the dtrace method needs to convert java lang string to utf8 string. |
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2615 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
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2616 typeArrayOop jlsValue = java_lang_String::value(src); |
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2617 int jlsOffset = java_lang_String::offset(src); |
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2618 int jlsLen = java_lang_String::length(src); |
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2619 jchar* jlsPos = (jlsLen == 0) ? NULL : |
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2620 jlsValue->char_at_addr(jlsOffset); |
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2621 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
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2622 } |
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2623 #endif // ndef HAVE_DTRACE_H |
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2624 |
| 0 | 2625 // ------------------------------------------------------------------------- |
| 2626 // Java-Java calling convention | |
| 2627 // (what you use when Java calls Java) | |
| 2628 | |
| 2629 //------------------------------name_for_receiver---------------------------------- | |
| 2630 // For a given signature, return the VMReg for parameter 0. | |
| 2631 VMReg SharedRuntime::name_for_receiver() { | |
| 2632 VMRegPair regs; | |
| 2633 BasicType sig_bt = T_OBJECT; | |
| 2634 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
| 2635 // Return argument 0 register. In the LP64 build pointers | |
| 2636 // take 2 registers, but the VM wants only the 'main' name. | |
| 2637 return regs.first(); | |
| 2638 } | |
| 2639 | |
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2640 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
| 0 | 2641 // This method is returning a data structure allocating as a |
| 2642 // ResourceObject, so do not put any ResourceMarks in here. | |
| 2643 char *s = sig->as_C_string(); | |
| 2644 int len = (int)strlen(s); | |
| 2645 *s++; len--; // Skip opening paren | |
| 2646 char *t = s+len; | |
| 2647 while( *(--t) != ')' ) ; // Find close paren | |
| 2648 | |
| 2649 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
| 2650 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
| 2651 int cnt = 0; | |
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2652 if (has_receiver) { |
| 0 | 2653 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
| 2654 } | |
| 2655 | |
| 2656 while( s < t ) { | |
| 2657 switch( *s++ ) { // Switch on signature character | |
| 2658 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
| 2659 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
| 2660 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
| 2661 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
| 2662 case 'I': sig_bt[cnt++] = T_INT; break; | |
| 2663 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
| 2664 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
| 2665 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
| 2666 case 'V': sig_bt[cnt++] = T_VOID; break; | |
| 2667 case 'L': // Oop | |
| 2668 while( *s++ != ';' ) ; // Skip signature | |
| 2669 sig_bt[cnt++] = T_OBJECT; | |
| 2670 break; | |
| 2671 case '[': { // Array | |
| 2672 do { // Skip optional size | |
| 2673 while( *s >= '0' && *s <= '9' ) s++; | |
| 2674 } while( *s++ == '[' ); // Nested arrays? | |
| 2675 // Skip element type | |
| 2676 if( s[-1] == 'L' ) | |
| 2677 while( *s++ != ';' ) ; // Skip signature | |
| 2678 sig_bt[cnt++] = T_ARRAY; | |
| 2679 break; | |
| 2680 } | |
| 2681 default : ShouldNotReachHere(); | |
| 2682 } | |
| 2683 } | |
| 2684 assert( cnt < 256, "grow table size" ); | |
| 2685 | |
| 2686 int comp_args_on_stack; | |
| 2687 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
| 2688 | |
| 2689 // the calling convention doesn't count out_preserve_stack_slots so | |
| 2690 // we must add that in to get "true" stack offsets. | |
| 2691 | |
| 2692 if (comp_args_on_stack) { | |
| 2693 for (int i = 0; i < cnt; i++) { | |
| 2694 VMReg reg1 = regs[i].first(); | |
| 2695 if( reg1->is_stack()) { | |
| 2696 // Yuck | |
| 2697 reg1 = reg1->bias(out_preserve_stack_slots()); | |
| 2698 } | |
| 2699 VMReg reg2 = regs[i].second(); | |
| 2700 if( reg2->is_stack()) { | |
| 2701 // Yuck | |
| 2702 reg2 = reg2->bias(out_preserve_stack_slots()); | |
| 2703 } | |
| 2704 regs[i].set_pair(reg2, reg1); | |
| 2705 } | |
| 2706 } | |
| 2707 | |
| 2708 // results | |
| 2709 *arg_size = cnt; | |
| 2710 return regs; | |
| 2711 } | |
| 2712 | |
| 2713 // OSR Migration Code | |
| 2714 // | |
| 2715 // This code is used convert interpreter frames into compiled frames. It is | |
| 2716 // called from very start of a compiled OSR nmethod. A temp array is | |
| 2717 // allocated to hold the interesting bits of the interpreter frame. All | |
| 2718 // active locks are inflated to allow them to move. The displaced headers and | |
| 2719 // active interpeter locals are copied into the temp buffer. Then we return | |
| 2720 // back to the compiled code. The compiled code then pops the current | |
| 2721 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
| 2722 // copies the interpreter locals and displaced headers where it wants. | |
| 2723 // Finally it calls back to free the temp buffer. | |
| 2724 // | |
| 2725 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
| 2726 | |
| 2727 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
| 2728 | |
| 2729 #ifdef IA64 | |
| 2730 ShouldNotReachHere(); // NYI | |
| 2731 #endif /* IA64 */ | |
| 2732 | |
| 2733 // | |
| 2734 // This code is dependent on the memory layout of the interpreter local | |
| 2735 // array and the monitors. On all of our platforms the layout is identical | |
| 2736 // so this code is shared. If some platform lays the their arrays out | |
| 2737 // differently then this code could move to platform specific code or | |
| 2738 // the code here could be modified to copy items one at a time using | |
| 2739 // frame accessor methods and be platform independent. | |
| 2740 | |
| 2741 frame fr = thread->last_frame(); | |
| 2742 assert( fr.is_interpreted_frame(), "" ); | |
| 2743 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
| 2744 | |
| 2745 // Figure out how many monitors are active. | |
| 2746 int active_monitor_count = 0; | |
| 2747 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 2748 kptr < fr.interpreter_frame_monitor_begin(); | |
| 2749 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 2750 if( kptr->obj() != NULL ) active_monitor_count++; | |
| 2751 } | |
| 2752 | |
| 2753 // QQQ we could place number of active monitors in the array so that compiled code | |
| 2754 // could double check it. | |
| 2755 | |
| 2756 methodOop moop = fr.interpreter_frame_method(); | |
| 2757 int max_locals = moop->max_locals(); | |
| 2758 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
| 2759 int buf_size_words = max_locals + active_monitor_count*2; | |
| 2760 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words); | |
| 2761 | |
| 2762 // Copy the locals. Order is preserved so that loading of longs works. | |
| 2763 // Since there's no GC I can copy the oops blindly. | |
| 2764 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
| 1506 | 2765 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
| 0 | 2766 (HeapWord*)&buf[0], |
| 2767 max_locals); | |
| 2768 | |
| 2769 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
| 2770 int i = max_locals; | |
| 2771 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
| 2772 kptr2 < fr.interpreter_frame_monitor_begin(); | |
| 2773 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
| 2774 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
| 2775 BasicLock *lock = kptr2->lock(); | |
| 2776 // Inflate so the displaced header becomes position-independent | |
| 2777 if (lock->displaced_header()->is_unlocked()) | |
| 2778 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
| 2779 // Now the displaced header is free to move | |
| 2780 buf[i++] = (intptr_t)lock->displaced_header(); | |
| 2781 buf[i++] = (intptr_t)kptr2->obj(); | |
| 2782 } | |
| 2783 } | |
| 2784 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
| 2785 | |
| 2786 return buf; | |
| 2787 JRT_END | |
| 2788 | |
| 2789 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
| 2790 FREE_C_HEAP_ARRAY(intptr_t,buf); | |
| 2791 JRT_END | |
| 2792 | |
| 2793 bool AdapterHandlerLibrary::contains(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()) ) return true; |
| 0 | 2798 } |
| 2799 return false; | |
| 2800 } | |
| 2801 | |
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2802 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
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2803 AdapterHandlerTableIterator iter(_adapters); |
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2804 while (iter.has_next()) { |
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2805 AdapterHandlerEntry* a = iter.next(); |
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2806 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) { |
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2807 st->print("Adapter for signature: "); |
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2808 st->print_cr("%s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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2809 a->fingerprint()->as_string(), |
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2810 a->get_i2c_entry(), a->get_c2i_entry(), a->get_c2i_unverified_entry()); |
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2811 |
| 0 | 2812 return; |
| 2813 } | |
| 2814 } | |
| 2815 assert(false, "Should have found handler"); | |
| 2816 } | |
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2817 |
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2818 #ifndef PRODUCT |
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2819 |
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2820 void AdapterHandlerLibrary::print_statistics() { |
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2821 _adapters->print_statistics(); |
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2822 } |
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2823 |
| 0 | 2824 #endif /* PRODUCT */ |