Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/sharedRuntime.cpp @ 6462:b3f5dc099f9d
removed XIR
author | Doug Simon <doug.simon@oracle.com> |
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date | Sun, 30 Sep 2012 13:21:20 +0200 |
parents | 957c266d8bc5 |
children | e522a00b91aa |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/compiledIC.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
32 #include "compiler/compileBroker.hpp" | |
33 #include "compiler/compilerOracle.hpp" | |
34 #include "interpreter/interpreter.hpp" | |
35 #include "interpreter/interpreterRuntime.hpp" | |
36 #include "memory/gcLocker.inline.hpp" | |
37 #include "memory/universe.inline.hpp" | |
38 #include "oops/oop.inline.hpp" | |
39 #include "prims/forte.hpp" | |
40 #include "prims/jvmtiExport.hpp" | |
41 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
42 #include "prims/methodHandles.hpp" | |
43 #include "prims/nativeLookup.hpp" | |
44 #include "runtime/arguments.hpp" | |
45 #include "runtime/biasedLocking.hpp" | |
46 #include "runtime/handles.inline.hpp" | |
47 #include "runtime/init.hpp" | |
48 #include "runtime/interfaceSupport.hpp" | |
49 #include "runtime/javaCalls.hpp" | |
50 #include "runtime/sharedRuntime.hpp" | |
51 #include "runtime/stubRoutines.hpp" | |
52 #include "runtime/vframe.hpp" | |
53 #include "runtime/vframeArray.hpp" | |
54 #include "utilities/copy.hpp" | |
55 #include "utilities/dtrace.hpp" | |
56 #include "utilities/events.hpp" | |
57 #include "utilities/hashtable.inline.hpp" | |
58 #include "utilities/xmlstream.hpp" | |
59 #ifdef TARGET_ARCH_x86 | |
60 # include "nativeInst_x86.hpp" | |
61 # include "vmreg_x86.inline.hpp" | |
62 #endif | |
63 #ifdef TARGET_ARCH_sparc | |
64 # include "nativeInst_sparc.hpp" | |
65 # include "vmreg_sparc.inline.hpp" | |
66 #endif | |
67 #ifdef TARGET_ARCH_zero | |
68 # include "nativeInst_zero.hpp" | |
69 # include "vmreg_zero.inline.hpp" | |
70 #endif | |
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71 #ifdef TARGET_ARCH_arm |
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72 # include "nativeInst_arm.hpp" |
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73 # include "vmreg_arm.inline.hpp" |
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74 #endif |
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75 #ifdef TARGET_ARCH_ppc |
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76 # include "nativeInst_ppc.hpp" |
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77 # include "vmreg_ppc.inline.hpp" |
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78 #endif |
1972 | 79 #ifdef COMPILER1 |
80 #include "c1/c1_Runtime1.hpp" | |
81 #endif | |
82 | |
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83 // Shared stub locations |
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84 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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85 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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86 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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87 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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88 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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89 |
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90 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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91 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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92 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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93 |
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94 #ifdef COMPILER2 |
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95 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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96 #endif // COMPILER2 |
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97 |
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98 |
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99 //----------------------------generate_stubs----------------------------------- |
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100 void SharedRuntime::generate_stubs() { |
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101 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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102 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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103 _resolve_opt_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_opt_virtual_call_C), "resolve_opt_virtual_call"); |
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104 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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105 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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106 |
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107 _polling_page_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), false); |
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108 _polling_page_return_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), true); |
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109 |
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110 generate_deopt_blob(); |
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111 |
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112 #ifdef COMPILER2 |
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113 generate_uncommon_trap_blob(); |
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114 #endif // COMPILER2 |
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115 } |
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116 |
0 | 117 #include <math.h> |
118 | |
4006 | 119 #ifndef USDT2 |
0 | 120 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
121 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
122 char*, int, char*, int, char*, int); | |
123 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
124 char*, int, char*, int, char*, int); | |
4006 | 125 #endif /* !USDT2 */ |
0 | 126 |
127 // Implementation of SharedRuntime | |
128 | |
129 #ifndef PRODUCT | |
130 // For statistics | |
131 int SharedRuntime::_ic_miss_ctr = 0; | |
132 int SharedRuntime::_wrong_method_ctr = 0; | |
133 int SharedRuntime::_resolve_static_ctr = 0; | |
134 int SharedRuntime::_resolve_virtual_ctr = 0; | |
135 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
136 int SharedRuntime::_implicit_null_throws = 0; | |
137 int SharedRuntime::_implicit_div0_throws = 0; | |
138 int SharedRuntime::_throw_null_ctr = 0; | |
139 | |
140 int SharedRuntime::_nof_normal_calls = 0; | |
141 int SharedRuntime::_nof_optimized_calls = 0; | |
142 int SharedRuntime::_nof_inlined_calls = 0; | |
143 int SharedRuntime::_nof_megamorphic_calls = 0; | |
144 int SharedRuntime::_nof_static_calls = 0; | |
145 int SharedRuntime::_nof_inlined_static_calls = 0; | |
146 int SharedRuntime::_nof_interface_calls = 0; | |
147 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
148 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
149 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
150 int SharedRuntime::_nof_removable_exceptions = 0; | |
151 | |
152 int SharedRuntime::_new_instance_ctr=0; | |
153 int SharedRuntime::_new_array_ctr=0; | |
154 int SharedRuntime::_multi1_ctr=0; | |
155 int SharedRuntime::_multi2_ctr=0; | |
156 int SharedRuntime::_multi3_ctr=0; | |
157 int SharedRuntime::_multi4_ctr=0; | |
158 int SharedRuntime::_multi5_ctr=0; | |
159 int SharedRuntime::_mon_enter_stub_ctr=0; | |
160 int SharedRuntime::_mon_exit_stub_ctr=0; | |
161 int SharedRuntime::_mon_enter_ctr=0; | |
162 int SharedRuntime::_mon_exit_ctr=0; | |
163 int SharedRuntime::_partial_subtype_ctr=0; | |
164 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
165 int SharedRuntime::_jshort_array_copy_ctr=0; | |
166 int SharedRuntime::_jint_array_copy_ctr=0; | |
167 int SharedRuntime::_jlong_array_copy_ctr=0; | |
168 int SharedRuntime::_oop_array_copy_ctr=0; | |
169 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
170 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
171 int SharedRuntime::_generic_array_copy_ctr=0; | |
172 int SharedRuntime::_slow_array_copy_ctr=0; | |
173 int SharedRuntime::_find_handler_ctr=0; | |
174 int SharedRuntime::_rethrow_ctr=0; | |
175 | |
176 int SharedRuntime::_ICmiss_index = 0; | |
177 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
178 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
179 | |
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180 |
0 | 181 void SharedRuntime::trace_ic_miss(address at) { |
182 for (int i = 0; i < _ICmiss_index; i++) { | |
183 if (_ICmiss_at[i] == at) { | |
184 _ICmiss_count[i]++; | |
185 return; | |
186 } | |
187 } | |
188 int index = _ICmiss_index++; | |
189 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
190 _ICmiss_at[index] = at; | |
191 _ICmiss_count[index] = 1; | |
192 } | |
193 | |
194 void SharedRuntime::print_ic_miss_histogram() { | |
195 if (ICMissHistogram) { | |
196 tty->print_cr ("IC Miss Histogram:"); | |
197 int tot_misses = 0; | |
198 for (int i = 0; i < _ICmiss_index; i++) { | |
199 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
200 tot_misses += _ICmiss_count[i]; | |
201 } | |
202 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
203 } | |
204 } | |
205 #endif // PRODUCT | |
206 | |
342
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207 #ifndef SERIALGC |
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208 |
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209 // G1 write-barrier pre: executed before a pointer store. |
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210 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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211 if (orig == NULL) { |
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212 assert(false, "should be optimized out"); |
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213 return; |
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214 } |
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215 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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216 // store the original value that was in the field reference |
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217 thread->satb_mark_queue().enqueue(orig); |
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218 JRT_END |
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219 |
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220 // G1 write-barrier post: executed after a pointer store. |
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221 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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222 thread->dirty_card_queue().enqueue(card_addr); |
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223 JRT_END |
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224 |
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225 #endif // !SERIALGC |
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226 |
0 | 227 |
228 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
229 return x * y; | |
230 JRT_END | |
231 | |
232 | |
233 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
234 if (x == min_jlong && y == CONST64(-1)) { | |
235 return x; | |
236 } else { | |
237 return x / y; | |
238 } | |
239 JRT_END | |
240 | |
241 | |
242 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
243 if (x == min_jlong && y == CONST64(-1)) { | |
244 return 0; | |
245 } else { | |
246 return x % y; | |
247 } | |
248 JRT_END | |
249 | |
250 | |
251 const juint float_sign_mask = 0x7FFFFFFF; | |
252 const juint float_infinity = 0x7F800000; | |
253 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
254 const julong double_infinity = CONST64(0x7FF0000000000000); | |
255 | |
256 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
257 #ifdef _WIN64 | |
258 // 64-bit Windows on amd64 returns the wrong values for | |
259 // infinity operands. | |
260 union { jfloat f; juint i; } xbits, ybits; | |
261 xbits.f = x; | |
262 ybits.f = y; | |
263 // x Mod Infinity == x unless x is infinity | |
264 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
265 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
266 return x; | |
267 } | |
268 #endif | |
269 return ((jfloat)fmod((double)x,(double)y)); | |
270 JRT_END | |
271 | |
272 | |
273 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
274 #ifdef _WIN64 | |
275 union { jdouble d; julong l; } xbits, ybits; | |
276 xbits.d = x; | |
277 ybits.d = y; | |
278 // x Mod Infinity == x unless x is infinity | |
279 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
280 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
281 return x; | |
282 } | |
283 #endif | |
284 return ((jdouble)fmod((double)x,(double)y)); | |
285 JRT_END | |
286 | |
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287 #ifdef __SOFTFP__ |
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288 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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289 return x + y; |
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290 JRT_END |
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291 |
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292 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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293 return x - y; |
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294 JRT_END |
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295 |
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296 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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297 return x * y; |
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298 JRT_END |
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299 |
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300 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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301 return x / y; |
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302 JRT_END |
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303 |
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304 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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305 return x + y; |
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306 JRT_END |
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307 |
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308 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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309 return x - y; |
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310 JRT_END |
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311 |
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312 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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313 return x * y; |
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314 JRT_END |
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315 |
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316 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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317 return x / y; |
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318 JRT_END |
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319 |
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320 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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321 return (jfloat)x; |
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322 JRT_END |
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323 |
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324 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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325 return (jdouble)x; |
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326 JRT_END |
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327 |
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328 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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329 return (jdouble)x; |
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330 JRT_END |
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331 |
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332 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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333 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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334 JRT_END |
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335 |
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336 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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337 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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338 JRT_END |
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339 |
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340 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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341 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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342 JRT_END |
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343 |
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344 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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345 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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346 JRT_END |
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347 |
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348 // Functions to return the opposite of the aeabi functions for nan. |
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349 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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350 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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351 JRT_END |
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352 |
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353 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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354 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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355 JRT_END |
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356 |
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357 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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358 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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359 JRT_END |
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360 |
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361 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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362 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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363 JRT_END |
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364 |
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365 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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366 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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367 JRT_END |
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368 |
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369 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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370 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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371 JRT_END |
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372 |
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373 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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374 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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375 JRT_END |
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376 |
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377 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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378 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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379 JRT_END |
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380 |
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381 // Intrinsics make gcc generate code for these. |
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382 float SharedRuntime::fneg(float f) { |
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383 return -f; |
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384 } |
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385 |
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386 double SharedRuntime::dneg(double f) { |
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387 return -f; |
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388 } |
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389 |
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390 #endif // __SOFTFP__ |
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391 |
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392 #if defined(__SOFTFP__) || defined(E500V2) |
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393 // Intrinsics make gcc generate code for these. |
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394 double SharedRuntime::dabs(double f) { |
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395 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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396 } |
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397 |
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398 #endif |
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399 |
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400 #if defined(__SOFTFP__) || defined(PPC) |
1681
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401 double SharedRuntime::dsqrt(double f) { |
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402 return sqrt(f); |
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403 } |
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404 #endif |
0 | 405 |
406 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
508
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407 if (g_isnan(x)) |
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408 return 0; |
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409 if (x >= (jfloat) max_jint) |
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410 return max_jint; |
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411 if (x <= (jfloat) min_jint) |
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412 return min_jint; |
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413 return (jint) x; |
0 | 414 JRT_END |
415 | |
416 | |
417 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
508
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418 if (g_isnan(x)) |
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419 return 0; |
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420 if (x >= (jfloat) max_jlong) |
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421 return max_jlong; |
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422 if (x <= (jfloat) min_jlong) |
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423 return min_jlong; |
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424 return (jlong) x; |
0 | 425 JRT_END |
426 | |
427 | |
428 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
508
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429 if (g_isnan(x)) |
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430 return 0; |
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431 if (x >= (jdouble) max_jint) |
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432 return max_jint; |
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433 if (x <= (jdouble) min_jint) |
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434 return min_jint; |
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435 return (jint) x; |
0 | 436 JRT_END |
437 | |
438 | |
439 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
508
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440 if (g_isnan(x)) |
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441 return 0; |
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442 if (x >= (jdouble) max_jlong) |
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443 return max_jlong; |
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444 if (x <= (jdouble) min_jlong) |
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445 return min_jlong; |
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446 return (jlong) x; |
0 | 447 JRT_END |
448 | |
449 | |
450 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
451 return (jfloat)x; | |
452 JRT_END | |
453 | |
454 | |
455 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
456 return (jfloat)x; | |
457 JRT_END | |
458 | |
459 | |
460 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
461 return (jdouble)x; | |
462 JRT_END | |
463 | |
464 // Exception handling accross interpreter/compiler boundaries | |
465 // | |
466 // exception_handler_for_return_address(...) returns the continuation address. | |
467 // The continuation address is the entry point of the exception handler of the | |
468 // previous frame depending on the return address. | |
469 | |
1295 | 470 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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471 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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472 |
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473 // Reset method handle flag. |
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474 thread->set_is_method_handle_return(false); |
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475 |
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476 // The fastest case first |
0 | 477 CodeBlob* blob = CodeCache::find_blob(return_address); |
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478 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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479 if (nm != NULL) { |
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480 // Set flag if return address is a method handle call site. |
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481 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
0 | 482 // native nmethods don't have exception handlers |
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483 assert(!nm->is_native_method(), "no exception handler"); |
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484 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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485 if (nm->is_deopt_pc(return_address)) { |
0 | 486 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
487 } else { | |
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488 return nm->exception_begin(); |
0 | 489 } |
490 } | |
491 | |
492 // Entry code | |
493 if (StubRoutines::returns_to_call_stub(return_address)) { | |
494 return StubRoutines::catch_exception_entry(); | |
495 } | |
496 // Interpreted code | |
497 if (Interpreter::contains(return_address)) { | |
498 return Interpreter::rethrow_exception_entry(); | |
499 } | |
500 | |
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501 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
0 | 502 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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503 |
0 | 504 #ifndef PRODUCT |
505 { ResourceMark rm; | |
506 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
507 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
508 tty->print_cr("b) other problem"); | |
509 } | |
510 #endif // PRODUCT | |
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511 |
0 | 512 ShouldNotReachHere(); |
513 return NULL; | |
514 } | |
515 | |
516 | |
1295 | 517 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
518 return raw_exception_handler_for_return_address(thread, return_address); | |
0 | 519 JRT_END |
520 | |
1295 | 521 |
0 | 522 address SharedRuntime::get_poll_stub(address pc) { |
523 address stub; | |
524 // Look up the code blob | |
525 CodeBlob *cb = CodeCache::find_blob(pc); | |
526 | |
527 // Should be an nmethod | |
528 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
529 | |
530 // Look up the relocation information | |
531 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
532 "safepoint polling: type must be poll" ); | |
533 | |
534 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
535 "Only polling locations are used for safepoint"); | |
536 | |
537 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
538 if (at_poll_return) { | |
539 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
540 "polling page return stub not created yet"); | |
1748 | 541 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
0 | 542 } else { |
543 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
544 "polling page safepoint stub not created yet"); | |
1748 | 545 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
0 | 546 } |
547 #ifndef PRODUCT | |
548 if( TraceSafepoint ) { | |
549 char buf[256]; | |
550 jio_snprintf(buf, sizeof(buf), | |
551 "... found polling page %s exception at pc = " | |
552 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
553 at_poll_return ? "return" : "loop", | |
554 (intptr_t)pc, (intptr_t)stub); | |
555 tty->print_raw_cr(buf); | |
556 } | |
557 #endif // PRODUCT | |
558 return stub; | |
559 } | |
560 | |
561 | |
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562 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
0 | 563 assert(caller.is_interpreted_frame(), ""); |
564 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
565 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
566 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
567 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
568 return result; | |
569 } | |
570 | |
571 | |
572 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
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573 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 574 vframeStream vfst(thread, true); |
575 methodHandle method = methodHandle(thread, vfst.method()); | |
576 address bcp = method()->bcp_from(vfst.bci()); | |
577 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
578 } | |
579 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
580 } | |
581 | |
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582 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
0 | 583 Handle h_exception = Exceptions::new_exception(thread, name, message); |
584 throw_and_post_jvmti_exception(thread, h_exception); | |
585 } | |
586 | |
610
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587 // The interpreter code to call this tracing function is only |
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588 // called/generated when TraceRedefineClasses has the right bits |
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589 // set. Since obsolete methods are never compiled, we don't have |
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590 // to modify the compilers to generate calls to this function. |
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591 // |
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592 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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593 JavaThread* thread, methodOopDesc* method)) |
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594 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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595 |
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596 if (method->is_obsolete()) { |
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597 // We are calling an obsolete method, but this is not necessarily |
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598 // an error. Our method could have been redefined just after we |
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599 // fetched the methodOop from the constant pool. |
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600 |
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601 // RC_TRACE macro has an embedded ResourceMark |
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602 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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603 ("calling obsolete method '%s'", |
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604 method->name_and_sig_as_C_string())); |
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605 if (RC_TRACE_ENABLED(0x00002000)) { |
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606 // this option is provided to debug calls to obsolete methods |
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607 guarantee(false, "faulting at call to an obsolete method."); |
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608 } |
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609 } |
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610 return 0; |
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611 JRT_END |
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612 |
0 | 613 // ret_pc points into caller; we are returning caller's exception handler |
614 // for given exception | |
615 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
616 bool force_unwind, bool top_frame_only) { | |
617 assert(nm != NULL, "must exist"); | |
618 ResourceMark rm; | |
619 | |
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620 #ifdef GRAAL |
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621 // lookup exception handler for this pc |
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622 int catch_pco = ret_pc - nm->code_begin(); |
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623 ExceptionHandlerTable table(nm); |
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624 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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625 if (t != NULL) { |
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626 return nm->code_begin() + t->pco(); |
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627 } else { |
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628 // there is no exception handler for this pc => deoptimize |
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629 nm->make_not_entrant(); |
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630 JavaThread* thread = JavaThread::current(); |
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631 RegisterMap reg_map(thread); |
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632 frame runtime_frame = thread->last_frame(); |
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633 frame caller_frame = runtime_frame.sender(®_map); |
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634 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_not_compiled_exception_handler); |
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635 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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636 } |
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637 |
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638 #else |
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639 |
0 | 640 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
641 // determine handler bci, if any | |
642 EXCEPTION_MARK; | |
643 | |
644 int handler_bci = -1; | |
645 int scope_depth = 0; | |
646 if (!force_unwind) { | |
647 int bci = sd->bci(); | |
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648 bool recursive_exception = false; |
0 | 649 do { |
650 bool skip_scope_increment = false; | |
651 // exception handler lookup | |
652 KlassHandle ek (THREAD, exception->klass()); | |
653 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
654 if (HAS_PENDING_EXCEPTION) { | |
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655 recursive_exception = true; |
0 | 656 // We threw an exception while trying to find the exception handler. |
657 // Transfer the new exception to the exception handle which will | |
658 // be set into thread local storage, and do another lookup for an | |
659 // exception handler for this exception, this time starting at the | |
660 // BCI of the exception handler which caused the exception to be | |
661 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
662 // argument to ensure that the correct exception is thrown (4870175). | |
663 exception = Handle(THREAD, PENDING_EXCEPTION); | |
664 CLEAR_PENDING_EXCEPTION; | |
665 if (handler_bci >= 0) { | |
666 bci = handler_bci; | |
667 handler_bci = -1; | |
668 skip_scope_increment = true; | |
669 } | |
670 } | |
3998
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671 else { |
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672 recursive_exception = false; |
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673 } |
0 | 674 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
675 sd = sd->sender(); | |
676 if (sd != NULL) { | |
677 bci = sd->bci(); | |
678 } | |
679 ++scope_depth; | |
680 } | |
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681 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
0 | 682 } |
683 | |
684 // found handling method => lookup exception handler | |
1748 | 685 int catch_pco = ret_pc - nm->code_begin(); |
0 | 686 |
687 ExceptionHandlerTable table(nm); | |
688 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
689 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
690 // Allow abbreviated catch tables. The idea is to allow a method | |
691 // to materialize its exceptions without committing to the exact | |
692 // routing of exceptions. In particular this is needed for adding | |
693 // a synthethic handler to unlock monitors when inlining | |
694 // synchonized methods since the unlock path isn't represented in | |
695 // the bytecodes. | |
696 t = table.entry_for(catch_pco, -1, 0); | |
697 } | |
698 | |
1378
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699 #ifdef COMPILER1 |
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700 if (t == NULL && nm->is_compiled_by_c1()) { |
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701 assert(nm->unwind_handler_begin() != NULL, ""); |
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702 return nm->unwind_handler_begin(); |
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703 } |
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704 #endif |
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705 |
0 | 706 if (t == NULL) { |
707 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
708 tty->print_cr(" Exception:"); | |
709 exception->print(); | |
710 tty->cr(); | |
711 tty->print_cr(" Compiled exception table :"); | |
712 table.print(); | |
713 nm->print_code(); | |
714 guarantee(false, "missing exception handler"); | |
715 return NULL; | |
716 } | |
717 | |
1748 | 718 return nm->code_begin() + t->pco(); |
4694
6336b144e391
Simplified and improved the speed of compiled exception handler lookup based on the Graal exception handler model.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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719 #endif |
0 | 720 } |
721 | |
722 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
723 // These errors occur only at call sites | |
724 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
725 JRT_END | |
726 | |
16
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727 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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728 // These errors occur only at call sites |
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729 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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730 JRT_END |
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731 |
0 | 732 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
733 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
734 JRT_END | |
735 | |
736 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
737 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
738 JRT_END | |
739 | |
740 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
741 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
742 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
743 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
744 JRT_END | |
745 | |
746 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
747 // We avoid using the normal exception construction in this case because | |
748 // it performs an upcall to Java, and we're already out of stack space. | |
749 klassOop k = SystemDictionary::StackOverflowError_klass(); | |
750 oop exception_oop = instanceKlass::cast(k)->allocate_instance(CHECK); | |
751 Handle exception (thread, exception_oop); | |
752 if (StackTraceInThrowable) { | |
753 java_lang_Throwable::fill_in_stack_trace(exception); | |
754 } | |
755 throw_and_post_jvmti_exception(thread, exception); | |
756 JRT_END | |
757 | |
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758 #ifdef GRAAL |
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759 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
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760 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
2607
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Fixed the stateBefore of invokes and monitorenter instructions to include the arguments of the instruction.
Thomas Wuerthinger <thomas@wuerthinger.net>
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|
761 if (TraceSignals) { |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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762 tty->print_cr(err_msg("Deoptimizing on implicit exception at relative pc=%d in method %s", pc - nm->entry_point(), nm->method()->name()->as_C_string())); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
763 } |
008adfd6d850
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
764 thread->_ScratchA = (intptr_t)pc; |
5111
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765 thread->_ScratchB = Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret); |
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766 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
2607
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
767 } |
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768 #endif |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
769 |
0 | 770 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
771 address pc, | |
772 SharedRuntime::ImplicitExceptionKind exception_kind) | |
773 { | |
774 address target_pc = NULL; | |
775 | |
776 if (Interpreter::contains(pc)) { | |
777 #ifdef CC_INTERP | |
778 // C++ interpreter doesn't throw implicit exceptions | |
779 ShouldNotReachHere(); | |
780 #else | |
781 switch (exception_kind) { | |
782 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
783 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
784 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
785 default: ShouldNotReachHere(); | |
786 } | |
787 #endif // !CC_INTERP | |
788 } else { | |
789 switch (exception_kind) { | |
790 case STACK_OVERFLOW: { | |
791 // Stack overflow only occurs upon frame setup; the callee is | |
792 // going to be unwound. Dispatch to a shared runtime stub | |
793 // which will cause the StackOverflowError to be fabricated | |
794 // and processed. | |
795 // For stack overflow in deoptimization blob, cleanup thread. | |
796 if (thread->deopt_mark() != NULL) { | |
797 Deoptimization::cleanup_deopt_info(thread, NULL); | |
798 } | |
4944 | 799 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
0 | 800 return StubRoutines::throw_StackOverflowError_entry(); |
801 } | |
802 | |
803 case IMPLICIT_NULL: { | |
804 if (VtableStubs::contains(pc)) { | |
805 // We haven't yet entered the callee frame. Fabricate an | |
806 // exception and begin dispatching it in the caller. Since | |
807 // the caller was at a call site, it's safe to destroy all | |
808 // caller-saved registers, as these entry points do. | |
809 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
465
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810 |
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811 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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812 if (vt_stub == NULL) return NULL; |
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813 |
0 | 814 if (vt_stub->is_abstract_method_error(pc)) { |
815 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
4944 | 816 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
0 | 817 return StubRoutines::throw_AbstractMethodError_entry(); |
818 } else { | |
4944 | 819 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
0 | 820 return StubRoutines::throw_NullPointerException_at_call_entry(); |
821 } | |
822 } else { | |
823 CodeBlob* cb = CodeCache::find_blob(pc); | |
465
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824 |
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825 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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826 if (cb == NULL) return NULL; |
0 | 827 |
828 // Exception happened in CodeCache. Must be either: | |
829 // 1. Inline-cache check in C2I handler blob, | |
830 // 2. Inline-cache check in nmethod, or | |
831 // 3. Implict null exception in nmethod | |
832 | |
833 if (!cb->is_nmethod()) { | |
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
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1295
diff
changeset
|
834 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
465
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835 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
4944 | 836 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
0 | 837 // There is no handler here, so we will simply unwind. |
838 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
839 } | |
840 | |
841 // Otherwise, it's an nmethod. Consult its exception handlers. | |
842 nmethod* nm = (nmethod*)cb; | |
843 if (nm->inlinecache_check_contains(pc)) { | |
844 // exception happened inside inline-cache check code | |
845 // => the nmethod is not yet active (i.e., the frame | |
846 // is not set up yet) => use return address pushed by | |
847 // caller => don't push another return address | |
4944 | 848 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
0 | 849 return StubRoutines::throw_NullPointerException_at_call_entry(); |
850 } | |
851 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
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852 if (nm->method()->is_method_handle_intrinsic()) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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853 // exception happened inside MH dispatch code, similar to a vtable stub |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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854 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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855 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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856 } |
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857 |
0 | 858 #ifndef PRODUCT |
859 _implicit_null_throws++; | |
860 #endif | |
4559
723df37192d6
Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
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861 #ifdef GRAAL |
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Christian Haeubl <christian.haeubl@oracle.com>
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862 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
4559
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Gilles Duboscq <duboscq@ssw.jku.at>
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863 #else |
0 | 864 target_pc = nm->continuation_for_implicit_exception(pc); |
4559
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Make it possible again to build a real client libjvm, drop the UseGraal flag.
Gilles Duboscq <duboscq@ssw.jku.at>
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865 #endif |
1250 | 866 // If there's an unexpected fault, target_pc might be NULL, |
867 // in which case we want to fall through into the normal | |
868 // error handling code. | |
0 | 869 } |
870 | |
871 break; // fall through | |
872 } | |
873 | |
874 | |
875 case IMPLICIT_DIVIDE_BY_ZERO: { | |
876 nmethod* nm = CodeCache::find_nmethod(pc); | |
877 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
878 #ifndef PRODUCT | |
879 _implicit_div0_throws++; | |
880 #endif | |
4559
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Gilles Duboscq <duboscq@ssw.jku.at>
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881 #ifdef GRAAL |
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Gilles Duboscq <duboscq@ssw.jku.at>
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882 if (TraceSignals) { |
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Gilles Duboscq <duboscq@ssw.jku.at>
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883 tty->print_cr("graal implicit div0"); |
1429
abc670a709dc
* -XX:TraceC1X=0...5 controls the native c1x tracing
Lukas Stadler <lukas.stadler@oracle.com>
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diff
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884 } |
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885 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
4559
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Gilles Duboscq <duboscq@ssw.jku.at>
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886 #else |
0 | 887 target_pc = nm->continuation_for_implicit_exception(pc); |
4559
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888 #endif |
1250 | 889 // If there's an unexpected fault, target_pc might be NULL, |
890 // in which case we want to fall through into the normal | |
891 // error handling code. | |
0 | 892 break; // fall through |
893 } | |
894 | |
895 default: ShouldNotReachHere(); | |
896 } | |
897 | |
898 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
899 | |
900 // for AbortVMOnException flag | |
901 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
902 if (exception_kind == IMPLICIT_NULL) { | |
4872
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903 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 904 } else { |
4872
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905 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 906 } |
907 return target_pc; | |
908 } | |
909 | |
910 ShouldNotReachHere(); | |
911 return NULL; | |
912 } | |
913 | |
914 | |
915 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
916 { | |
917 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
918 } | |
919 JNI_END | |
920 | |
6271
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921 JNI_ENTRY(void, throw_unsupported_operation_exception(JNIEnv* env, ...)) |
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7188911: nightly failures after JSR 292 lazy method handle update (round 2)
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922 { |
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923 THROW(vmSymbols::java_lang_UnsupportedOperationException()); |
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7188911: nightly failures after JSR 292 lazy method handle update (round 2)
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924 } |
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925 JNI_END |
0 | 926 |
927 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
928 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
929 } | |
930 | |
6271
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|
931 address SharedRuntime::native_method_throw_unsupported_operation_exception_entry() { |
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932 return CAST_FROM_FN_PTR(address, &throw_unsupported_operation_exception); |
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|
933 } |
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|
934 |
0 | 935 |
936 #ifndef PRODUCT | |
937 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
938 const frame f = thread->last_frame(); | |
939 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
940 #ifndef PRODUCT | |
941 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
942 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
943 #endif // !PRODUCT | |
944 return preserve_this_value; | |
945 JRT_END | |
946 #endif // !PRODUCT | |
947 | |
948 | |
949 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
950 os::yield_all(attempts); | |
951 JRT_END | |
952 | |
953 | |
954 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
955 assert(obj->is_oop(), "must be a valid oop"); | |
956 assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); | |
957 instanceKlass::register_finalizer(instanceOop(obj), CHECK); | |
958 JRT_END | |
959 | |
960 | |
961 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
962 if (thread != NULL) { | |
963 if (thread->is_Java_thread()) { | |
964 oop obj = ((JavaThread*)thread)->threadObj(); | |
965 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
966 } | |
967 } | |
968 return 0; | |
969 } | |
970 | |
971 /** | |
972 * This function ought to be a void function, but cannot be because | |
973 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
974 * 6254741. Once that is fixed we can remove the dummy return value. | |
975 */ | |
976 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
977 return dtrace_object_alloc_base(Thread::current(), o); | |
978 } | |
979 | |
980 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
981 assert(DTraceAllocProbes, "wrong call"); | |
982 Klass* klass = o->blueprint(); | |
983 int size = o->size(); | |
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984 Symbol* name = klass->name(); |
4006 | 985 #ifndef USDT2 |
0 | 986 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
987 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
4006 | 988 #else /* USDT2 */ |
989 HOTSPOT_OBJECT_ALLOC( | |
990 get_java_tid(thread), | |
991 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
992 #endif /* USDT2 */ | |
0 | 993 return 0; |
994 } | |
995 | |
996 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
997 JavaThread* thread, methodOopDesc* method)) | |
998 assert(DTraceMethodProbes, "wrong call"); | |
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999 Symbol* kname = method->klass_name(); |
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1000 Symbol* name = method->name(); |
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1001 Symbol* sig = method->signature(); |
4006 | 1002 #ifndef USDT2 |
0 | 1003 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
1004 kname->bytes(), kname->utf8_length(), | |
1005 name->bytes(), name->utf8_length(), | |
1006 sig->bytes(), sig->utf8_length()); | |
4006 | 1007 #else /* USDT2 */ |
1008 HOTSPOT_METHOD_ENTRY( | |
1009 get_java_tid(thread), | |
1010 (char *) kname->bytes(), kname->utf8_length(), | |
1011 (char *) name->bytes(), name->utf8_length(), | |
1012 (char *) sig->bytes(), sig->utf8_length()); | |
1013 #endif /* USDT2 */ | |
0 | 1014 return 0; |
1015 JRT_END | |
1016 | |
1017 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
1018 JavaThread* thread, methodOopDesc* method)) | |
1019 assert(DTraceMethodProbes, "wrong call"); | |
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1020 Symbol* kname = method->klass_name(); |
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1021 Symbol* name = method->name(); |
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1022 Symbol* sig = method->signature(); |
4006 | 1023 #ifndef USDT2 |
0 | 1024 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
1025 kname->bytes(), kname->utf8_length(), | |
1026 name->bytes(), name->utf8_length(), | |
1027 sig->bytes(), sig->utf8_length()); | |
4006 | 1028 #else /* USDT2 */ |
1029 HOTSPOT_METHOD_RETURN( | |
1030 get_java_tid(thread), | |
1031 (char *) kname->bytes(), kname->utf8_length(), | |
1032 (char *) name->bytes(), name->utf8_length(), | |
1033 (char *) sig->bytes(), sig->utf8_length()); | |
1034 #endif /* USDT2 */ | |
0 | 1035 return 0; |
1036 JRT_END | |
1037 | |
1038 | |
1039 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
1040 // for a call current in progress, i.e., arguments has been pushed on stack | |
1041 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
1042 // vtable updates, etc. Caller frame must be compiled. | |
1043 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
1044 ResourceMark rm(THREAD); | |
1045 | |
1046 // last java frame on stack (which includes native call frames) | |
1047 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
1048 | |
1049 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
1050 } | |
1051 | |
1052 | |
1053 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
1054 // for a call current in progress, i.e., arguments has been pushed on stack | |
1055 // but callee has not been invoked yet. Caller frame must be compiled. | |
1056 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
1057 vframeStream& vfst, | |
1058 Bytecodes::Code& bc, | |
1059 CallInfo& callinfo, TRAPS) { | |
1060 Handle receiver; | |
1061 Handle nullHandle; //create a handy null handle for exception returns | |
1062 | |
1063 assert(!vfst.at_end(), "Java frame must exist"); | |
1064 | |
1065 // Find caller and bci from vframe | |
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1066 methodHandle caller(THREAD, vfst.method()); |
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1067 int bci = vfst.bci(); |
0 | 1068 |
1069 // Find bytecode | |
2142 | 1070 Bytecode_invoke bytecode(caller, bci); |
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1071 bc = bytecode.invoke_code(); |
2142 | 1072 int bytecode_index = bytecode.index(); |
0 | 1073 |
1074 // Find receiver for non-static call | |
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1075 if (bc != Bytecodes::_invokestatic && |
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1076 bc != Bytecodes::_invokedynamic) { |
0 | 1077 // This register map must be update since we need to find the receiver for |
1078 // compiled frames. The receiver might be in a register. | |
1079 RegisterMap reg_map2(thread); | |
1080 frame stubFrame = thread->last_frame(); | |
1081 // Caller-frame is a compiled frame | |
1082 frame callerFrame = stubFrame.sender(®_map2); | |
1083 | |
2142 | 1084 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
0 | 1085 if (callee.is_null()) { |
1086 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
1087 } | |
1088 // Retrieve from a compiled argument list | |
1089 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
1090 | |
1091 if (receiver.is_null()) { | |
1092 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
1093 } | |
1094 } | |
1095 | |
1096 // Resolve method. This is parameterized by bytecode. | |
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1097 constantPoolHandle constants(THREAD, caller->constants()); |
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1098 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
0 | 1099 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
1100 | |
1101 #ifdef ASSERT | |
1102 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1103 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
0 | 1104 assert(receiver.not_null(), "should have thrown exception"); |
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1105 KlassHandle receiver_klass(THREAD, receiver->klass()); |
0 | 1106 klassOop rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
1107 // klass is already loaded | |
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1108 KlassHandle static_receiver_klass(THREAD, rk); |
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1109 // Method handle invokes might have been optimized to a direct call |
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1110 // so don't check for the receiver class. |
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1111 // FIXME this weakens the assert too much |
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1112 methodHandle callee = callinfo.selected_method(); |
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1113 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1114 callee->is_method_handle_intrinsic() || |
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1115 callee->is_compiled_lambda_form(), |
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1116 "actual receiver must be subclass of static receiver klass"); |
0 | 1117 if (receiver_klass->oop_is_instance()) { |
1118 if (instanceKlass::cast(receiver_klass())->is_not_initialized()) { | |
1119 tty->print_cr("ERROR: Klass not yet initialized!!"); | |
1120 receiver_klass.print(); | |
1121 } | |
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1122 assert(!instanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
0 | 1123 } |
1124 } | |
1125 #endif | |
1126 | |
1127 return receiver; | |
1128 } | |
1129 | |
1130 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
1131 ResourceMark rm(THREAD); | |
1132 // We need first to check if any Java activations (compiled, interpreted) | |
1133 // exist on the stack since last JavaCall. If not, we need | |
1134 // to get the target method from the JavaCall wrapper. | |
1135 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
1136 methodHandle callee_method; | |
1137 if (vfst.at_end()) { | |
1138 // No Java frames were found on stack since we did the JavaCall. | |
1139 // Hence the stack can only contain an entry_frame. We need to | |
1140 // find the target method from the stub frame. | |
1141 RegisterMap reg_map(thread, false); | |
1142 frame fr = thread->last_frame(); | |
1143 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
1144 fr = fr.sender(®_map); | |
1145 assert(fr.is_entry_frame(), "must be"); | |
1146 // fr is now pointing to the entry frame. | |
1147 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
1148 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
1149 } else { | |
1150 Bytecodes::Code bc; | |
1151 CallInfo callinfo; | |
1152 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
1153 callee_method = callinfo.selected_method(); | |
1154 } | |
1155 assert(callee_method()->is_method(), "must be"); | |
1156 return callee_method; | |
1157 } | |
1158 | |
1159 // Resolves a call. | |
1160 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
1161 bool is_virtual, | |
1162 bool is_optimized, TRAPS) { | |
1163 methodHandle callee_method; | |
1164 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1165 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
1166 int retry_count = 0; | |
1167 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
1142 | 1168 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
0 | 1169 // If has a pending exception then there is no need to re-try to |
1170 // resolve this method. | |
1171 // If the method has been redefined, we need to try again. | |
1172 // Hack: we have no way to update the vtables of arrays, so don't | |
1173 // require that java.lang.Object has been updated. | |
1174 | |
1175 // It is very unlikely that method is redefined more than 100 times | |
1176 // in the middle of resolve. If it is looping here more than 100 times | |
1177 // means then there could be a bug here. | |
1178 guarantee((retry_count++ < 100), | |
1179 "Could not resolve to latest version of redefined method"); | |
1180 // method is redefined in the middle of resolve so re-try. | |
1181 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1182 } | |
1183 } | |
1184 return callee_method; | |
1185 } | |
1186 | |
1187 // Resolves a call. The compilers generate code for calls that go here | |
1188 // and are patched with the real destination of the call. | |
1189 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
1190 bool is_virtual, | |
1191 bool is_optimized, TRAPS) { | |
1192 | |
1193 ResourceMark rm(thread); | |
1194 RegisterMap cbl_map(thread, false); | |
1195 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
1196 | |
1295 | 1197 CodeBlob* caller_cb = caller_frame.cb(); |
1198 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
1199 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
0 | 1200 // make sure caller is not getting deoptimized |
1201 // and removed before we are done with it. | |
1202 // CLEANUP - with lazy deopt shouldn't need this lock | |
1295 | 1203 nmethodLocker caller_lock(caller_nm); |
0 | 1204 |
1205 | |
1206 // determine call info & receiver | |
1207 // note: a) receiver is NULL for static calls | |
1208 // b) an exception is thrown if receiver is NULL for non-static calls | |
1209 CallInfo call_info; | |
1210 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
1211 Handle receiver = find_callee_info(thread, invoke_code, | |
1212 call_info, CHECK_(methodHandle())); | |
1213 methodHandle callee_method = call_info.selected_method(); | |
1214 | |
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1215 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1216 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1217 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1218 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
0 | 1219 |
1220 #ifndef PRODUCT | |
1221 // tracing/debugging/statistics | |
1222 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
1223 (is_virtual) ? (&_resolve_virtual_ctr) : | |
1224 (&_resolve_static_ctr); | |
1225 Atomic::inc(addr); | |
1226 | |
1227 if (TraceCallFixup) { | |
1228 ResourceMark rm(thread); | |
1229 tty->print("resolving %s%s (%s) call to", | |
1230 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
1231 Bytecodes::name(invoke_code)); | |
1232 callee_method->print_short_name(tty); | |
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1233 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
0 | 1234 } |
1235 #endif | |
1236 | |
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1237 // JSR 292 key invariant: |
1295 | 1238 // If the resolved method is a MethodHandle invoke target the call |
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1239 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1240 // leaving the stack in a state unknown to either caller or callee |
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1241 // TODO detune for now but we might need it again |
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1242 // assert(!callee_method->is_compiled_lambda_form() || |
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1243 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
1295 | 1244 |
0 | 1245 // Compute entry points. This might require generation of C2I converter |
1246 // frames, so we cannot be holding any locks here. Furthermore, the | |
1247 // computation of the entry points is independent of patching the call. We | |
1248 // always return the entry-point, but we only patch the stub if the call has | |
1249 // not been deoptimized. Return values: For a virtual call this is an | |
1250 // (cached_oop, destination address) pair. For a static call/optimized | |
1251 // virtual this is just a destination address. | |
1252 | |
1253 StaticCallInfo static_call_info; | |
1254 CompiledICInfo virtual_call_info; | |
1255 | |
1256 // Make sure the callee nmethod does not get deoptimized and removed before | |
1257 // we are done patching the code. | |
1295 | 1258 nmethod* callee_nm = callee_method->code(); |
1259 nmethodLocker nl_callee(callee_nm); | |
0 | 1260 #ifdef ASSERT |
1295 | 1261 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
0 | 1262 #endif |
1263 | |
1264 if (is_virtual) { | |
1265 assert(receiver.not_null(), "sanity check"); | |
1266 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
1267 KlassHandle h_klass(THREAD, receiver->klass()); | |
1268 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
1269 is_optimized, static_bound, virtual_call_info, | |
1270 CHECK_(methodHandle())); | |
1271 } else { | |
1272 // static call | |
1273 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
1274 } | |
1275 | |
1276 // grab lock, check for deoptimization and potentially patch caller | |
1277 { | |
1278 MutexLocker ml_patch(CompiledIC_lock); | |
1279 | |
1280 // Now that we are ready to patch if the methodOop was redefined then | |
1281 // don't update call site and let the caller retry. | |
1282 | |
1283 if (!callee_method->is_old()) { | |
1284 #ifdef ASSERT | |
1285 // We must not try to patch to jump to an already unloaded method. | |
1286 if (dest_entry_point != 0) { | |
1287 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
1288 "should not unload nmethod while locked"); | |
1289 } | |
1290 #endif | |
1291 if (is_virtual) { | |
1292 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
1293 if (inline_cache->is_clean()) { | |
1294 inline_cache->set_to_monomorphic(virtual_call_info); | |
1295 } | |
1296 } else { | |
1297 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
1298 if (ssc->is_clean()) ssc->set(static_call_info); | |
1299 } | |
1300 } | |
1301 | |
1302 } // unlock CompiledIC_lock | |
1303 | |
1304 return callee_method; | |
1305 } | |
1306 | |
1307 | |
1308 // Inline caches exist only in compiled code | |
1309 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
1310 #ifdef ASSERT | |
1311 RegisterMap reg_map(thread, false); | |
1312 frame stub_frame = thread->last_frame(); | |
1313 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1314 frame caller_frame = stub_frame.sender(®_map); | |
1315 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
1316 #endif /* ASSERT */ | |
1317 | |
1318 methodHandle callee_method; | |
1319 JRT_BLOCK | |
1320 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
1321 // Return methodOop through TLS | |
1322 thread->set_vm_result(callee_method()); | |
1323 JRT_BLOCK_END | |
1324 // return compiled code entry point after potential safepoints | |
1325 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1326 return callee_method->verified_code_entry(); | |
1327 JRT_END | |
1328 | |
1329 | |
1330 // Handle call site that has been made non-entrant | |
1331 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
1332 // 6243940 We might end up in here if the callee is deoptimized | |
1333 // as we race to call it. We don't want to take a safepoint if | |
1334 // the caller was interpreted because the caller frame will look | |
1335 // interpreted to the stack walkers and arguments are now | |
1336 // "compiled" so it is much better to make this transition | |
1337 // invisible to the stack walking code. The i2c path will | |
1338 // place the callee method in the callee_target. It is stashed | |
1339 // there because if we try and find the callee by normal means a | |
1340 // safepoint is possible and have trouble gc'ing the compiled args. | |
1341 RegisterMap reg_map(thread, false); | |
1342 frame stub_frame = thread->last_frame(); | |
1343 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1344 frame caller_frame = stub_frame.sender(®_map); | |
1135
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1345 |
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1346 // MethodHandle invokes don't have a CompiledIC and should always |
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1347 // simply redispatch to the callee_target. |
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1348 address sender_pc = caller_frame.pc(); |
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1349 CodeBlob* sender_cb = caller_frame.cb(); |
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1350 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
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1351 |
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1352 if (caller_frame.is_interpreted_frame() || |
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1353 caller_frame.is_entry_frame()) { |
0 | 1354 methodOop callee = thread->callee_target(); |
1355 guarantee(callee != NULL && callee->is_method(), "bad handshake"); | |
1356 thread->set_vm_result(callee); | |
1357 thread->set_callee_target(NULL); | |
1358 return callee->get_c2i_entry(); | |
1359 } | |
1360 | |
1361 // Must be compiled to compiled path which is safe to stackwalk | |
1362 methodHandle callee_method; | |
1363 JRT_BLOCK | |
1364 // Force resolving of caller (if we called from compiled frame) | |
1365 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
1366 thread->set_vm_result(callee_method()); | |
1367 JRT_BLOCK_END | |
1368 // return compiled code entry point after potential safepoints | |
1369 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1370 return callee_method->verified_code_entry(); | |
1371 JRT_END | |
1372 | |
1373 | |
1374 // resolve a static call and patch code | |
1375 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
1376 methodHandle callee_method; | |
1377 JRT_BLOCK | |
1378 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
1379 thread->set_vm_result(callee_method()); | |
1380 JRT_BLOCK_END | |
1381 // return compiled code entry point after potential safepoints | |
1382 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1383 return callee_method->verified_code_entry(); | |
1384 JRT_END | |
1385 | |
1386 | |
1387 // resolve virtual call and update inline cache to monomorphic | |
1388 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
1389 methodHandle callee_method; | |
1390 JRT_BLOCK | |
1391 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
1392 thread->set_vm_result(callee_method()); | |
1393 JRT_BLOCK_END | |
1394 // return compiled code entry point after potential safepoints | |
1395 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1396 return callee_method->verified_code_entry(); | |
1397 JRT_END | |
1398 | |
1399 | |
1400 // Resolve a virtual call that can be statically bound (e.g., always | |
1401 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
1402 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
1403 methodHandle callee_method; | |
1404 JRT_BLOCK | |
1405 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
1406 thread->set_vm_result(callee_method()); | |
1407 JRT_BLOCK_END | |
1408 // return compiled code entry point after potential safepoints | |
1409 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1410 return callee_method->verified_code_entry(); | |
1411 JRT_END | |
1412 | |
1413 | |
1414 | |
1415 | |
1416 | |
1417 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
1418 ResourceMark rm(thread); | |
1419 CallInfo call_info; | |
1420 Bytecodes::Code bc; | |
1421 | |
1422 // receiver is NULL for static calls. An exception is thrown for NULL | |
1423 // receivers for non-static calls | |
1424 Handle receiver = find_callee_info(thread, bc, call_info, | |
1425 CHECK_(methodHandle())); | |
1426 // Compiler1 can produce virtual call sites that can actually be statically bound | |
1427 // If we fell thru to below we would think that the site was going megamorphic | |
1428 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
1429 // we'd try and do a vtable dispatch however methods that can be statically bound | |
1430 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
1431 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
1432 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
1433 // never to miss again. I don't believe C2 will produce code like this but if it | |
1434 // did this would still be the correct thing to do for it too, hence no ifdef. | |
1435 // | |
1436 if (call_info.resolved_method()->can_be_statically_bound()) { | |
1437 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
1438 if (TraceCallFixup) { | |
1439 RegisterMap reg_map(thread, false); | |
1440 frame caller_frame = thread->last_frame().sender(®_map); | |
1441 ResourceMark rm(thread); | |
1442 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
1443 callee_method->print_short_name(tty); | |
1444 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
1445 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1446 } | |
1447 return callee_method; | |
1448 } | |
1449 | |
1450 methodHandle callee_method = call_info.selected_method(); | |
1451 | |
1452 bool should_be_mono = false; | |
1453 | |
1454 #ifndef PRODUCT | |
1455 Atomic::inc(&_ic_miss_ctr); | |
1456 | |
1457 // Statistics & Tracing | |
1458 if (TraceCallFixup) { | |
1459 ResourceMark rm(thread); | |
1460 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
1461 callee_method->print_short_name(tty); | |
1462 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1463 } | |
1464 | |
1465 if (ICMissHistogram) { | |
1466 MutexLocker m(VMStatistic_lock); | |
1467 RegisterMap reg_map(thread, false); | |
1468 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
1469 // produce statistics under the lock | |
1470 trace_ic_miss(f.pc()); | |
1471 } | |
1472 #endif | |
1473 | |
1474 // install an event collector so that when a vtable stub is created the | |
1475 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
1476 // event can't be posted when the stub is created as locks are held | |
1477 // - instead the event will be deferred until the event collector goes | |
1478 // out of scope. | |
1479 JvmtiDynamicCodeEventCollector event_collector; | |
1480 | |
1481 // Update inline cache to megamorphic. Skip update if caller has been | |
1482 // made non-entrant or we are called from interpreted. | |
1483 { MutexLocker ml_patch (CompiledIC_lock); | |
1484 RegisterMap reg_map(thread, false); | |
1485 frame caller_frame = thread->last_frame().sender(®_map); | |
1486 CodeBlob* cb = caller_frame.cb(); | |
1487 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
1488 // Not a non-entrant nmethod, so find inline_cache | |
1489 CompiledIC* inline_cache = CompiledIC_before(caller_frame.pc()); | |
1490 bool should_be_mono = false; | |
1491 if (inline_cache->is_optimized()) { | |
1492 if (TraceCallFixup) { | |
1493 ResourceMark rm(thread); | |
1494 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
1495 callee_method->print_short_name(tty); | |
1496 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1497 } | |
1498 should_be_mono = true; | |
1499 } else { | |
1500 compiledICHolderOop ic_oop = (compiledICHolderOop) inline_cache->cached_oop(); | |
1501 if ( ic_oop != NULL && ic_oop->is_compiledICHolder()) { | |
1502 | |
1503 if (receiver()->klass() == ic_oop->holder_klass()) { | |
1504 // This isn't a real miss. We must have seen that compiled code | |
1505 // is now available and we want the call site converted to a | |
1506 // monomorphic compiled call site. | |
1507 // We can't assert for callee_method->code() != NULL because it | |
1508 // could have been deoptimized in the meantime | |
1509 if (TraceCallFixup) { | |
1510 ResourceMark rm(thread); | |
1511 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
1512 callee_method->print_short_name(tty); | |
1513 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1514 } | |
1515 should_be_mono = true; | |
1516 } | |
1517 } | |
1518 } | |
1519 | |
1520 if (should_be_mono) { | |
1521 | |
1522 // We have a path that was monomorphic but was going interpreted | |
1523 // and now we have (or had) a compiled entry. We correct the IC | |
1524 // by using a new icBuffer. | |
1525 CompiledICInfo info; | |
1526 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
1527 inline_cache->compute_monomorphic_entry(callee_method, | |
1528 receiver_klass, | |
1529 inline_cache->is_optimized(), | |
1530 false, | |
1531 info, CHECK_(methodHandle())); | |
1532 inline_cache->set_to_monomorphic(info); | |
1533 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
1534 // Change to megamorphic | |
1535 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
1536 } else { | |
1537 // Either clean or megamorphic | |
1538 } | |
1539 } | |
1540 } // Release CompiledIC_lock | |
1541 | |
1542 return callee_method; | |
1543 } | |
1544 | |
1545 // | |
1546 // Resets a call-site in compiled code so it will get resolved again. | |
1547 // This routines handles both virtual call sites, optimized virtual call | |
1548 // sites, and static call sites. Typically used to change a call sites | |
1549 // destination from compiled to interpreted. | |
1550 // | |
1551 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
1552 ResourceMark rm(thread); | |
1553 RegisterMap reg_map(thread, false); | |
1554 frame stub_frame = thread->last_frame(); | |
1555 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
1556 frame caller = stub_frame.sender(®_map); | |
1557 | |
1558 // Do nothing if the frame isn't a live compiled frame. | |
1559 // nmethod could be deoptimized by the time we get here | |
1560 // so no update to the caller is needed. | |
1561 | |
1562 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
1563 | |
1564 address pc = caller.pc(); | |
1565 | |
1566 // Default call_addr is the location of the "basic" call. | |
1567 // Determine the address of the call we a reresolving. With | |
1568 // Inline Caches we will always find a recognizable call. | |
1569 // With Inline Caches disabled we may or may not find a | |
1570 // recognizable call. We will always find a call for static | |
1571 // calls and for optimized virtual calls. For vanilla virtual | |
1572 // calls it depends on the state of the UseInlineCaches switch. | |
1573 // | |
1574 // With Inline Caches disabled we can get here for a virtual call | |
1575 // for two reasons: | |
1576 // 1 - calling an abstract method. The vtable for abstract methods | |
1577 // will run us thru handle_wrong_method and we will eventually | |
1578 // end up in the interpreter to throw the ame. | |
1579 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
1580 // call and between the time we fetch the entry address and | |
1581 // we jump to it the target gets deoptimized. Similar to 1 | |
1582 // we will wind up in the interprter (thru a c2i with c2). | |
1583 // | |
1584 address call_addr = NULL; | |
1585 { | |
1586 // Get call instruction under lock because another thread may be | |
1587 // busy patching it. | |
1588 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1589 // Location of call instruction | |
1590 if (NativeCall::is_call_before(pc)) { | |
1591 NativeCall *ncall = nativeCall_before(pc); | |
1592 call_addr = ncall->instruction_address(); | |
1593 } | |
1594 } | |
1595 | |
1596 // Check for static or virtual call | |
1597 bool is_static_call = false; | |
1598 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
1599 // Make sure nmethod doesn't get deoptimized and removed until | |
1600 // this is done with it. | |
1601 // CLEANUP - with lazy deopt shouldn't need this lock | |
1602 nmethodLocker nmlock(caller_nm); | |
1603 | |
1604 if (call_addr != NULL) { | |
1605 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
1606 int ret = iter.next(); // Get item | |
1607 if (ret) { | |
1608 assert(iter.addr() == call_addr, "must find call"); | |
1609 if (iter.type() == relocInfo::static_call_type) { | |
1610 is_static_call = true; | |
1611 } else { | |
1612 assert(iter.type() == relocInfo::virtual_call_type || | |
1613 iter.type() == relocInfo::opt_virtual_call_type | |
1614 , "unexpected relocInfo. type"); | |
1615 } | |
1616 } else { | |
1617 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
1618 } | |
1619 | |
1620 // Cleaning the inline cache will force a new resolve. This is more robust | |
1621 // than directly setting it to the new destination, since resolving of calls | |
1622 // is always done through the same code path. (experience shows that it | |
1623 // leads to very hard to track down bugs, if an inline cache gets updated | |
1624 // to a wrong method). It should not be performance critical, since the | |
1625 // resolve is only done once. | |
1626 | |
1627 MutexLocker ml(CompiledIC_lock); | |
1628 // | |
1629 // We do not patch the call site if the nmethod has been made non-entrant | |
1630 // as it is a waste of time | |
1631 // | |
1632 if (caller_nm->is_in_use()) { | |
1633 if (is_static_call) { | |
1634 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
1635 ssc->set_to_clean(); | |
1636 } else { | |
1637 // compiled, dispatched call (which used to call an interpreted method) | |
1638 CompiledIC* inline_cache = CompiledIC_at(call_addr); | |
1639 inline_cache->set_to_clean(); | |
1640 } | |
1641 } | |
1642 } | |
1643 | |
1644 } | |
1645 | |
1646 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
1647 | |
1648 | |
1649 #ifndef PRODUCT | |
1650 Atomic::inc(&_wrong_method_ctr); | |
1651 | |
1652 if (TraceCallFixup) { | |
1653 ResourceMark rm(thread); | |
1654 tty->print("handle_wrong_method reresolving call to"); | |
1655 callee_method->print_short_name(tty); | |
1656 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1657 } | |
1658 #endif | |
1659 | |
1660 return callee_method; | |
1661 } | |
1662 | |
1663 // --------------------------------------------------------------------------- | |
1664 // We are calling the interpreter via a c2i. Normally this would mean that | |
1665 // we were called by a compiled method. However we could have lost a race | |
1666 // where we went int -> i2c -> c2i and so the caller could in fact be | |
1205 | 1667 // interpreted. If the caller is compiled we attempt to patch the caller |
0 | 1668 // so he no longer calls into the interpreter. |
1669 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(methodOopDesc* method, address caller_pc)) | |
1670 methodOop moop(method); | |
1671 | |
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1672 assert(moop->is_oop(false) && moop->is_method(), "method oop from call site is invalid"); |
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1673 |
0 | 1674 address entry_point = moop->from_compiled_entry(); |
1675 | |
1676 // It's possible that deoptimization can occur at a call site which hasn't | |
1677 // been resolved yet, in which case this function will be called from | |
1678 // an nmethod that has been patched for deopt and we can ignore the | |
1679 // request for a fixup. | |
1680 // Also it is possible that we lost a race in that from_compiled_entry | |
1681 // is now back to the i2c in that case we don't need to patch and if | |
1682 // we did we'd leap into space because the callsite needs to use | |
1683 // "to interpreter" stub in order to load up the methodOop. Don't | |
1684 // ask me how I know this... | |
1685 | |
1686 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
1205 | 1687 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
1688 return; | |
1689 } | |
1690 | |
1691 // The check above makes sure this is a nmethod. | |
1692 nmethod* nm = cb->as_nmethod_or_null(); | |
1693 assert(nm, "must be"); | |
1694 | |
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1695 // Get the return PC for the passed caller PC. |
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1696 address return_pc = caller_pc + frame::pc_return_offset; |
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1697 |
0 | 1698 // There is a benign race here. We could be attempting to patch to a compiled |
1699 // entry point at the same time the callee is being deoptimized. If that is | |
1700 // the case then entry_point may in fact point to a c2i and we'd patch the | |
1701 // call site with the same old data. clear_code will set code() to NULL | |
1702 // at the end of it. If we happen to see that NULL then we can skip trying | |
1703 // to patch. If we hit the window where the callee has a c2i in the | |
1704 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
1705 // and patch the code with the same old data. Asi es la vida. | |
1706 | |
1707 if (moop->code() == NULL) return; | |
1708 | |
1205 | 1709 if (nm->is_in_use()) { |
0 | 1710 |
1711 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
1712 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1713 if (NativeCall::is_call_before(return_pc)) { |
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1714 NativeCall *call = nativeCall_before(return_pc); |
0 | 1715 // |
1716 // bug 6281185. We might get here after resolving a call site to a vanilla | |
1717 // virtual call. Because the resolvee uses the verified entry it may then | |
1718 // see compiled code and attempt to patch the site by calling us. This would | |
1719 // then incorrectly convert the call site to optimized and its downhill from | |
1720 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
1721 // just made a call site that could be megamorphic into a monomorphic site | |
1722 // for the rest of its life! Just another racing bug in the life of | |
1723 // fixup_callers_callsite ... | |
1724 // | |
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1a5913bf5e19
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diff
changeset
|
1725 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
0 | 1726 iter.next(); |
1727 assert(iter.has_current(), "must have a reloc at java call site"); | |
1728 relocInfo::relocType typ = iter.reloc()->type(); | |
1729 if ( typ != relocInfo::static_call_type && | |
1730 typ != relocInfo::opt_virtual_call_type && | |
1731 typ != relocInfo::static_stub_type) { | |
1732 return; | |
1733 } | |
1734 address destination = call->destination(); | |
1735 if (destination != entry_point) { | |
1736 CodeBlob* callee = CodeCache::find_blob(destination); | |
1737 // callee == cb seems weird. It means calling interpreter thru stub. | |
1738 if (callee == cb || callee->is_adapter_blob()) { | |
1739 // static call or optimized virtual | |
1740 if (TraceCallFixup) { | |
1204 | 1741 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1742 moop->print_short_name(tty); |
1743 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1744 } | |
1745 call->set_destination_mt_safe(entry_point); | |
1746 } else { | |
1747 if (TraceCallFixup) { | |
1748 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
1749 moop->print_short_name(tty); | |
1750 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1751 } | |
1752 // assert is too strong could also be resolve destinations. | |
1753 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
1754 } | |
1755 } else { | |
1756 if (TraceCallFixup) { | |
1204 | 1757 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1758 moop->print_short_name(tty); |
1759 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1760 } | |
1761 } | |
1762 } | |
1763 } | |
1764 IRT_END | |
1765 | |
1766 | |
1767 // same as JVM_Arraycopy, but called directly from compiled code | |
1768 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
1769 oopDesc* dest, jint dest_pos, | |
1770 jint length, | |
1771 JavaThread* thread)) { | |
1772 #ifndef PRODUCT | |
1773 _slow_array_copy_ctr++; | |
1774 #endif | |
1775 // Check if we have null pointers | |
1776 if (src == NULL || dest == NULL) { | |
1777 THROW(vmSymbols::java_lang_NullPointerException()); | |
1778 } | |
1779 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
1780 // even though the copy_array API also performs dynamic checks to ensure | |
1781 // that src and dest are truly arrays (and are conformable). | |
1782 // The copy_array mechanism is awkward and could be removed, but | |
1783 // the compilers don't call this function except as a last resort, | |
1784 // so it probably doesn't matter. | |
1785 Klass::cast(src->klass())->copy_array((arrayOopDesc*)src, src_pos, | |
1786 (arrayOopDesc*)dest, dest_pos, | |
1787 length, thread); | |
1788 } | |
1789 JRT_END | |
1790 | |
1791 char* SharedRuntime::generate_class_cast_message( | |
1792 JavaThread* thread, const char* objName) { | |
1793 | |
1794 // Get target class name from the checkcast instruction | |
1795 vframeStream vfst(thread, true); | |
1796 assert(!vfst.at_end(), "Java frame must exist"); | |
2142 | 1797 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
0 | 1798 Klass* targetKlass = Klass::cast(vfst.method()->constants()->klass_at( |
2142 | 1799 cc.index(), thread)); |
0 | 1800 return generate_class_cast_message(objName, targetKlass->external_name()); |
1801 } | |
1802 | |
1803 char* SharedRuntime::generate_class_cast_message( | |
710 | 1804 const char* objName, const char* targetKlassName, const char* desc) { |
0 | 1805 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
1806 | |
53 | 1807 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 1808 if (NULL == message) { |
53 | 1809 // Shouldn't happen, but don't cause even more problems if it does |
0 | 1810 message = const_cast<char*>(objName); |
1811 } else { | |
1812 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
1813 } | |
1814 return message; | |
1815 } | |
1816 | |
1817 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
1818 (void) JavaThread::current()->reguard_stack(); | |
1819 JRT_END | |
1820 | |
1821 | |
1822 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
1823 #ifndef PRODUCT | |
1824 int SharedRuntime::_monitor_enter_ctr=0; | |
1825 #endif | |
1826 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
1827 oop obj(_obj); | |
1828 #ifndef PRODUCT | |
1829 _monitor_enter_ctr++; // monitor enter slow | |
1830 #endif | |
1831 if (PrintBiasedLockingStatistics) { | |
1832 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
1833 } | |
1834 Handle h_obj(THREAD, obj); | |
1835 if (UseBiasedLocking) { | |
1836 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
1837 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
1838 } else { | |
1839 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
1840 } | |
1841 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
1842 JRT_END | |
1843 | |
1844 #ifndef PRODUCT | |
1845 int SharedRuntime::_monitor_exit_ctr=0; | |
1846 #endif | |
1847 // Handles the uncommon cases of monitor unlocking in compiled code | |
1848 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
1849 oop obj(_obj); | |
1850 #ifndef PRODUCT | |
1851 _monitor_exit_ctr++; // monitor exit slow | |
1852 #endif | |
1853 Thread* THREAD = JavaThread::current(); | |
1854 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
1855 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
1856 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
1857 #undef MIGHT_HAVE_PENDING | |
1858 #ifdef MIGHT_HAVE_PENDING | |
1859 // Save and restore any pending_exception around the exception mark. | |
1860 // While the slow_exit must not throw an exception, we could come into | |
1861 // this routine with one set. | |
1862 oop pending_excep = NULL; | |
1863 const char* pending_file; | |
1864 int pending_line; | |
1865 if (HAS_PENDING_EXCEPTION) { | |
1866 pending_excep = PENDING_EXCEPTION; | |
1867 pending_file = THREAD->exception_file(); | |
1868 pending_line = THREAD->exception_line(); | |
1869 CLEAR_PENDING_EXCEPTION; | |
1870 } | |
1871 #endif /* MIGHT_HAVE_PENDING */ | |
1872 | |
1873 { | |
1874 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
1875 EXCEPTION_MARK; | |
1876 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
1877 } | |
1878 | |
1879 #ifdef MIGHT_HAVE_PENDING | |
1880 if (pending_excep != NULL) { | |
1881 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
1882 } | |
1883 #endif /* MIGHT_HAVE_PENDING */ | |
1884 JRT_END | |
1885 | |
1886 #ifndef PRODUCT | |
1887 | |
1888 void SharedRuntime::print_statistics() { | |
1889 ttyLocker ttyl; | |
1890 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
1891 | |
1892 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
1893 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
1894 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
1895 | |
1896 SharedRuntime::print_ic_miss_histogram(); | |
1897 | |
1898 if (CountRemovableExceptions) { | |
1899 if (_nof_removable_exceptions > 0) { | |
1900 Unimplemented(); // this counter is not yet incremented | |
1901 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
1902 } | |
1903 } | |
1904 | |
1905 // Dump the JRT_ENTRY counters | |
1906 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
1907 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
1908 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
1909 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
1910 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
1911 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
1912 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
1913 | |
1914 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
1915 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
1916 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
1917 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
1918 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
1919 | |
1920 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
1921 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
1922 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
1923 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
1924 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
1925 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
1926 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
1927 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
1928 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
1929 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
1930 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
1931 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
1932 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
1933 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
1934 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
1935 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
1936 | |
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1937 AdapterHandlerLibrary::print_statistics(); |
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1938 |
0 | 1939 if (xtty != NULL) xtty->tail("statistics"); |
1940 } | |
1941 | |
1942 inline double percent(int x, int y) { | |
1943 return 100.0 * x / MAX2(y, 1); | |
1944 } | |
1945 | |
1946 class MethodArityHistogram { | |
1947 public: | |
1948 enum { MAX_ARITY = 256 }; | |
1949 private: | |
1950 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
1951 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
1952 static int _max_arity; // max. arity seen | |
1953 static int _max_size; // max. arg size seen | |
1954 | |
1955 static void add_method_to_histogram(nmethod* nm) { | |
1956 methodOop m = nm->method(); | |
1957 ArgumentCount args(m->signature()); | |
1958 int arity = args.size() + (m->is_static() ? 0 : 1); | |
1959 int argsize = m->size_of_parameters(); | |
1960 arity = MIN2(arity, MAX_ARITY-1); | |
1961 argsize = MIN2(argsize, MAX_ARITY-1); | |
1962 int count = nm->method()->compiled_invocation_count(); | |
1963 _arity_histogram[arity] += count; | |
1964 _size_histogram[argsize] += count; | |
1965 _max_arity = MAX2(_max_arity, arity); | |
1966 _max_size = MAX2(_max_size, argsize); | |
1967 } | |
1968 | |
1969 void print_histogram_helper(int n, int* histo, const char* name) { | |
1970 const int N = MIN2(5, n); | |
1971 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
1972 double sum = 0; | |
1973 double weighted_sum = 0; | |
1974 int i; | |
1975 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
1976 double rest = sum; | |
1977 double percent = sum / 100; | |
1978 for (i = 0; i <= N; i++) { | |
1979 rest -= histo[i]; | |
1980 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
1981 } | |
1982 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
1983 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
1984 } | |
1985 | |
1986 void print_histogram() { | |
1987 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
1988 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
1989 tty->print_cr("\nSame for parameter size (in words):"); | |
1990 print_histogram_helper(_max_size, _size_histogram, "size"); | |
1991 tty->cr(); | |
1992 } | |
1993 | |
1994 public: | |
1995 MethodArityHistogram() { | |
1996 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
1997 _max_arity = _max_size = 0; | |
1998 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
1999 CodeCache::nmethods_do(add_method_to_histogram); | |
2000 print_histogram(); | |
2001 } | |
2002 }; | |
2003 | |
2004 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
2005 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
2006 int MethodArityHistogram::_max_arity; | |
2007 int MethodArityHistogram::_max_size; | |
2008 | |
2009 void SharedRuntime::print_call_statistics(int comp_total) { | |
2010 tty->print_cr("Calls from compiled code:"); | |
2011 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
2012 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
2013 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
2014 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
2015 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
2016 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
2017 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
2018 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
2019 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
2020 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
2021 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
2022 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
2023 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
2024 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
2025 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
2026 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
2027 tty->cr(); | |
2028 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
2029 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
2030 tty->print_cr(" %% in nested categories are relative to their category"); | |
2031 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
2032 tty->cr(); | |
2033 | |
2034 MethodArityHistogram h; | |
2035 } | |
2036 #endif | |
2037 | |
2038 | |
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2039 // A simple wrapper class around the calling convention information |
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2040 // that allows sharing of adapters for the same calling convention. |
6197 | 2041 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2042 private: |
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2043 enum { |
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2044 _basic_type_bits = 4, |
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2045 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2046 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2047 _compact_int_count = 3 |
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2048 }; |
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2049 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2050 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2051 |
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2052 union { |
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2053 int _compact[_compact_int_count]; |
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2054 int* _fingerprint; |
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2055 } _value; |
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2056 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2057 // Otherwise _value._fingerprint is the array. |
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2058 |
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2059 // Remap BasicTypes that are handled equivalently by the adapters. |
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2060 // These are correct for the current system but someday it might be |
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2061 // necessary to make this mapping platform dependent. |
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2062 static int adapter_encoding(BasicType in) { |
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2063 switch(in) { |
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2064 case T_BOOLEAN: |
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2065 case T_BYTE: |
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2066 case T_SHORT: |
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2067 case T_CHAR: |
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2068 // There are all promoted to T_INT in the calling convention |
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2069 return T_INT; |
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2070 |
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2071 case T_OBJECT: |
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2072 case T_ARRAY: |
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2073 // In other words, we assume that any register good enough for |
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2074 // an int or long is good enough for a managed pointer. |
1207
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|
2075 #ifdef _LP64 |
1506 | 2076 return T_LONG; |
1207
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|
2077 #else |
1506 | 2078 return T_INT; |
1207
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|
2079 #endif |
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|
2080 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2081 case T_INT: |
74c848d437ab
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diff
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|
2082 case T_LONG: |
74c848d437ab
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diff
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|
2083 case T_FLOAT: |
74c848d437ab
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diff
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|
2084 case T_DOUBLE: |
74c848d437ab
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diff
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|
2085 case T_VOID: |
74c848d437ab
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parents:
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diff
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|
2086 return in; |
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
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|
2087 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2088 default: |
74c848d437ab
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diff
changeset
|
2089 ShouldNotReachHere(); |
74c848d437ab
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|
2090 return T_CONFLICT; |
1187
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diff
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|
2091 } |
cf0685d550f1
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|
2092 } |
cf0685d550f1
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diff
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|
2093 |
1207
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diff
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|
2094 public: |
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|
2095 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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|
2096 // The fingerprint is based on the BasicType signature encoded |
3841
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|
2097 // into an array of ints with eight entries per int. |
1207
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|
2098 int* ptr; |
6266
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|
2099 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
1d7922586cf6
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|
2100 if (len <= _compact_int_count) { |
1d7922586cf6
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|
2101 assert(_compact_int_count == 3, "else change next line"); |
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|
2102 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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|
2103 // Storing the signature encoded as signed chars hits about 98% |
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diff
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|
2104 // of the time. |
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parents:
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diff
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|
2105 _length = -len; |
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|
2106 ptr = _value._compact; |
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|
2107 } else { |
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|
2108 _length = len; |
6197 | 2109 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
1207
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|
2110 ptr = _value._fingerprint; |
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parents:
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diff
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|
2111 } |
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parents:
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diff
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|
2112 |
3841
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|
2113 // Now pack the BasicTypes with 8 per int |
1207
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|
2114 int sig_index = 0; |
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|
2115 for (int index = 0; index < len; index++) { |
74c848d437ab
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|
2116 int value = 0; |
6266
1d7922586cf6
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twisti
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changeset
|
2117 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
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|
2118 int bt = ((sig_index < total_args_passed) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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|
2119 ? adapter_encoding(sig_bt[sig_index++]) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
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|
2120 : 0); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents:
6197
diff
changeset
|
2121 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
1d7922586cf6
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twisti
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changeset
|
2122 value = (value << _basic_type_bits) | bt; |
1207
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|
2123 } |
74c848d437ab
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parents:
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diff
changeset
|
2124 ptr[index] = value; |
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diff
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|
2125 } |
1187
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diff
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|
2126 } |
cf0685d550f1
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parents:
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diff
changeset
|
2127 |
cf0685d550f1
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parents:
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diff
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|
2128 ~AdapterFingerPrint() { |
cf0685d550f1
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changeset
|
2129 if (_length > 0) { |
6197 | 2130 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
1187
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|
2131 } |
cf0685d550f1
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parents:
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diff
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|
2132 } |
cf0685d550f1
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diff
changeset
|
2133 |
1207
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|
2134 int value(int index) { |
1187
cf0685d550f1
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parents:
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diff
changeset
|
2135 if (_length < 0) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
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|
2136 return _value._compact[index]; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2137 } |
cf0685d550f1
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parents:
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diff
changeset
|
2138 return _value._fingerprint[index]; |
cf0685d550f1
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parents:
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diff
changeset
|
2139 } |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2140 int length() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2141 if (_length < 0) return -_length; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2142 return _length; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2143 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2144 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2145 bool is_compact() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2146 return _length <= 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2147 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2148 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2149 unsigned int compute_hash() { |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2150 int hash = 0; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2151 for (int i = 0; i < length(); i++) { |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2152 int v = value(i); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2153 hash = (hash << 8) ^ v ^ (hash >> 5); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2154 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2155 return (unsigned int)hash; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2156 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2157 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2158 const char* as_string() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2159 stringStream st; |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2160 st.print("0x"); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2161 for (int i = 0; i < length(); i++) { |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2162 st.print("%08x", value(i)); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2163 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2164 return st.as_string(); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2165 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2166 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2167 bool equals(AdapterFingerPrint* other) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2168 if (other->_length != _length) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2169 return false; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2170 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2171 if (_length < 0) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2172 assert(_compact_int_count == 3, "else change next line"); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
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|
2173 return _value._compact[0] == other->_value._compact[0] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2174 _value._compact[1] == other->_value._compact[1] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2175 _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
|
2176 } else { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2177 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
|
2178 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
|
2179 return false; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2180 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2181 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2182 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2183 return true; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2184 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2185 }; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2186 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2187 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2188 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
6197 | 2189 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2190 friend class AdapterHandlerTableIterator; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2191 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2192 private: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2193 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2194 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2195 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
|
2196 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
|
2197 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
|
2198 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
|
2199 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
|
2200 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2201 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2202 AdapterHandlerEntry* bucket(int i) { |
6197 | 2203 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2204 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2205 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2206 public: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2207 AdapterHandlerTable() |
6197 | 2208 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2209 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2210 // Create a new entry suitable for insertion in the table |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2211 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
6197 | 2212 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2213 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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|
2214 return entry; |
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|
2215 } |
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|
2216 |
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|
2217 // Insert an entry into the table |
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|
2218 void add(AdapterHandlerEntry* entry) { |
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|
2219 int index = hash_to_index(entry->hash()); |
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|
2220 add_entry(index, entry); |
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|
2221 } |
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|
2222 |
1207
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|
2223 void free_entry(AdapterHandlerEntry* entry) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2224 entry->deallocate(); |
6197 | 2225 BasicHashtable<mtCode>::free_entry(entry); |
1207
74c848d437ab
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|
2226 } |
74c848d437ab
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diff
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|
2227 |
1187
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|
2228 // Find a entry with the same fingerprint if it exists |
1207
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|
2229 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
1263
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|
2230 NOT_PRODUCT(_lookups++); |
1207
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|
2231 AdapterFingerPrint fp(total_args_passed, sig_bt); |
1187
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|
2232 unsigned int hash = fp.compute_hash(); |
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|
2233 int index = hash_to_index(hash); |
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|
2234 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
1263
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|
2235 NOT_PRODUCT(_buckets++); |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2236 if (e->hash() == hash) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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|
2237 NOT_PRODUCT(_equals++); |
1187
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|
2238 if (fp.equals(e->fingerprint())) { |
1263
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|
2239 #ifndef PRODUCT |
1187
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|
2240 if (fp.is_compact()) _compact++; |
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|
2241 _hits++; |
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|
2242 #endif |
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|
2243 return e; |
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|
2244 } |
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|
2245 } |
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|
2246 } |
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|
2247 return NULL; |
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|
2248 } |
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|
2249 |
1263
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|
2250 #ifndef PRODUCT |
1187
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|
2251 void print_statistics() { |
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|
2252 ResourceMark rm; |
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|
2253 int longest = 0; |
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|
2254 int empty = 0; |
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|
2255 int total = 0; |
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|
2256 int nonempty = 0; |
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|
2257 for (int index = 0; index < table_size(); index++) { |
cf0685d550f1
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|
2258 int count = 0; |
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|
2259 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
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|
2260 count++; |
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diff
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|
2261 } |
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diff
changeset
|
2262 if (count != 0) nonempty++; |
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diff
changeset
|
2263 if (count == 0) empty++; |
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diff
changeset
|
2264 if (count > longest) longest = count; |
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diff
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|
2265 total += count; |
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|
2266 } |
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|
2267 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
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|
2268 empty, longest, total, total / (double)nonempty); |
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6911204: generated adapters with large signatures can fill up the code cache
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|
2269 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
cf0685d550f1
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|
2270 _lookups, _buckets, _equals, _hits, _compact); |
1263
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kvn
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|
2271 } |
1187
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diff
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|
2272 #endif |
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|
2273 }; |
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|
2274 |
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|
2275 |
1263
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1257
diff
changeset
|
2276 #ifndef PRODUCT |
1187
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|
2277 |
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|
2278 int AdapterHandlerTable::_lookups; |
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|
2279 int AdapterHandlerTable::_buckets; |
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diff
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|
2280 int AdapterHandlerTable::_equals; |
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parents:
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diff
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|
2281 int AdapterHandlerTable::_hits; |
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parents:
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diff
changeset
|
2282 int AdapterHandlerTable::_compact; |
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parents:
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diff
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|
2283 |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2284 #endif |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2285 |
1187
cf0685d550f1
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diff
changeset
|
2286 class AdapterHandlerTableIterator : public StackObj { |
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parents:
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diff
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|
2287 private: |
cf0685d550f1
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parents:
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diff
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|
2288 AdapterHandlerTable* _table; |
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parents:
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diff
changeset
|
2289 int _index; |
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diff
changeset
|
2290 AdapterHandlerEntry* _current; |
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parents:
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diff
changeset
|
2291 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2292 void scan() { |
cf0685d550f1
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parents:
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diff
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|
2293 while (_index < _table->table_size()) { |
cf0685d550f1
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diff
changeset
|
2294 AdapterHandlerEntry* a = _table->bucket(_index); |
1564 | 2295 _index++; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2296 if (a != NULL) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2297 _current = a; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2298 return; |
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never
parents:
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diff
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|
2299 } |
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never
parents:
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diff
changeset
|
2300 } |
cf0685d550f1
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never
parents:
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diff
changeset
|
2301 } |
cf0685d550f1
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never
parents:
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diff
changeset
|
2302 |
cf0685d550f1
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diff
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|
2303 public: |
cf0685d550f1
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diff
changeset
|
2304 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2305 scan(); |
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6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2306 } |
cf0685d550f1
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never
parents:
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diff
changeset
|
2307 bool has_next() { |
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parents:
1142
diff
changeset
|
2308 return _current != NULL; |
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parents:
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diff
changeset
|
2309 } |
cf0685d550f1
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parents:
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diff
changeset
|
2310 AdapterHandlerEntry* next() { |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2311 if (_current != NULL) { |
cf0685d550f1
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1142
diff
changeset
|
2312 AdapterHandlerEntry* result = _current; |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2313 _current = _current->next(); |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2314 if (_current == NULL) scan(); |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2315 return result; |
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parents:
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diff
changeset
|
2316 } else { |
cf0685d550f1
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parents:
1142
diff
changeset
|
2317 return NULL; |
cf0685d550f1
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parents:
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diff
changeset
|
2318 } |
cf0685d550f1
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diff
changeset
|
2319 } |
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|
2320 }; |
cf0685d550f1
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|
2321 |
cf0685d550f1
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|
2322 |
0 | 2323 // --------------------------------------------------------------------------- |
2324 // Implementation of AdapterHandlerLibrary | |
1187
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|
2325 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
cf0685d550f1
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|
2326 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
0 | 2327 const int AdapterHandlerLibrary_size = 16*K; |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2328 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2329 |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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|
2330 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2331 // Should be called only when AdapterHandlerLibrary_lock is active. |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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diff
changeset
|
2332 if (_buffer == NULL) // Initialize lazily |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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diff
changeset
|
2333 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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710
diff
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|
2334 return _buffer; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
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710
diff
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|
2335 } |
0 | 2336 |
2337 void AdapterHandlerLibrary::initialize() { | |
1187
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|
2338 if (_adapters != NULL) return; |
cf0685d550f1
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|
2339 _adapters = new AdapterHandlerTable(); |
0 | 2340 |
2341 // Create a special handler for abstract methods. Abstract methods | |
2342 // are never compiled so an i2c entry is somewhat meaningless, but | |
2343 // fill it in with something appropriate just in case. Pass handle | |
2344 // wrong method for the c2i transitions. | |
2345 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2346 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
cf0685d550f1
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never
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diff
changeset
|
2347 StubRoutines::throw_AbstractMethodError_entry(), |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2348 wrong_method, wrong_method); |
0 | 2349 } |
2350 | |
1187
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never
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|
2351 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2352 address i2c_entry, |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2353 address c2i_entry, |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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|
2354 address c2i_unverified_entry) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2355 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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diff
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|
2356 } |
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diff
changeset
|
2357 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2358 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2359 // Use customized signature handler. Need to lock around updates to |
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2360 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2361 // and a single writer: this could be fixed if it becomes a |
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2362 // problem). |
0 | 2363 |
2364 // Get the address of the ic_miss handlers before we grab the | |
2365 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
2366 // was caused by the initialization of the stubs happening | |
2367 // while we held the lock and then notifying jvmti while | |
2368 // holding it. This just forces the initialization to be a little | |
2369 // earlier. | |
2370 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
2371 assert(ic_miss != NULL, "must have handler"); | |
2372 | |
1187
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|
2373 ResourceMark rm; |
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2374 |
1748 | 2375 NOT_PRODUCT(int insts_size); |
1299
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2376 AdapterBlob* B = NULL; |
742
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2377 AdapterHandlerEntry* entry = NULL; |
1187
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2378 AdapterFingerPrint* fingerprint = NULL; |
0 | 2379 { |
2380 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2381 // make sure data structure is initialized | |
2382 initialize(); | |
2383 | |
2384 if (method->is_abstract()) { | |
1187
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2385 return _abstract_method_handler; |
0 | 2386 } |
2387 | |
1187
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2388 // Fill in the signature array, for the calling-convention call. |
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2389 int total_args_passed = method->size_of_parameters(); // All args on stack |
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2390 |
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2391 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2392 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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2393 int i = 0; |
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2394 if (!method->is_static()) // Pass in receiver first |
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|
2395 sig_bt[i++] = T_OBJECT; |
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2396 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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2397 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2398 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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2399 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2400 } |
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2401 assert(i == total_args_passed, ""); |
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2402 |
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|
2403 // Lookup method signature's fingerprint |
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2404 entry = _adapters->lookup(total_args_passed, sig_bt); |
1187
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2405 |
1207
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|
2406 #ifdef ASSERT |
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|
2407 AdapterHandlerEntry* shared_entry = NULL; |
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|
2408 if (VerifyAdapterSharing && entry != NULL) { |
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|
2409 shared_entry = entry; |
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|
2410 entry = NULL; |
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|
2411 } |
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|
2412 #endif |
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|
2413 |
1187
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2414 if (entry != NULL) { |
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2415 return entry; |
0 | 2416 } |
2417 | |
1207
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2418 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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2419 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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2420 |
1187
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2421 // Make a C heap allocated version of the fingerprint to store in the adapter |
1207
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|
2422 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
1187
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|
2423 |
0 | 2424 // Create I2C & C2I handlers |
2425 | |
1299
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2426 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
742
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2427 if (buf != NULL) { |
1748 | 2428 CodeBuffer buffer(buf); |
742
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|
2429 short buffer_locs[20]; |
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|
2430 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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|
2431 sizeof(buffer_locs)/sizeof(relocInfo)); |
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|
2432 MacroAssembler _masm(&buffer); |
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|
2433 |
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|
2434 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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|
2435 total_args_passed, |
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|
2436 comp_args_on_stack, |
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|
2437 sig_bt, |
1187
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|
2438 regs, |
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|
2439 fingerprint); |
0 | 2440 |
1207
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|
2441 #ifdef ASSERT |
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|
2442 if (VerifyAdapterSharing) { |
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|
2443 if (shared_entry != NULL) { |
1748 | 2444 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
1207
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|
2445 "code must match"); |
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diff
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|
2446 // Release the one just created and return the original |
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diff
changeset
|
2447 _adapters->free_entry(entry); |
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|
2448 return shared_entry; |
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|
2449 } else { |
1748 | 2450 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
1207
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|
2451 } |
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|
2452 } |
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|
2453 #endif |
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|
2454 |
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|
2455 B = AdapterBlob::create(&buffer); |
1748 | 2456 NOT_PRODUCT(insts_size = buffer.insts_size()); |
742
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|
2457 } |
28 | 2458 if (B == NULL) { |
2459 // CodeCache is full, disable compilation | |
2460 // Ought to log this but compile log is only per compile thread | |
2461 // and we're some non descript Java thread. | |
1202 | 2462 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
2463 CompileBroker::handle_full_code_cache(); | |
1187
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|
2464 return NULL; // Out of CodeCache space |
28 | 2465 } |
1748 | 2466 entry->relocate(B->content_begin()); |
0 | 2467 #ifndef PRODUCT |
2468 // debugging suppport | |
6266
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|
2469 if (PrintAdapterHandlers || PrintStubCode) { |
1d7922586cf6
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|
2470 entry->print_adapter_on(tty); |
1d7922586cf6
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|
2471 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
1187
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|
2472 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
6266
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changeset
|
2473 method->signature()->as_C_string(), insts_size); |
0 | 2474 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
6266
1d7922586cf6
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|
2475 if (Verbose || PrintStubCode) { |
1d7922586cf6
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diff
changeset
|
2476 address first_pc = entry->base_address(); |
1d7922586cf6
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diff
changeset
|
2477 if (first_pc != NULL) |
1d7922586cf6
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6197
diff
changeset
|
2478 Disassembler::decode(first_pc, first_pc + insts_size); |
1d7922586cf6
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diff
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|
2479 } |
0 | 2480 } |
2481 #endif | |
2482 | |
1187
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|
2483 _adapters->add(entry); |
0 | 2484 } |
2485 // Outside of the lock | |
2486 if (B != NULL) { | |
2487 char blob_id[256]; | |
2488 jio_snprintf(blob_id, | |
2489 sizeof(blob_id), | |
1187
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|
2490 "%s(%s)@" PTR_FORMAT, |
1299
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diff
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|
2491 B->name(), |
1187
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|
2492 fingerprint->as_string(), |
1748 | 2493 B->content_begin()); |
2494 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
0 | 2495 |
2496 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
1748 | 2497 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
0 | 2498 } |
2499 } | |
1187
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|
2500 return entry; |
0 | 2501 } |
2502 | |
6266
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|
2503 address AdapterHandlerEntry::base_address() { |
1d7922586cf6
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|
2504 address base = _i2c_entry; |
1d7922586cf6
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|
2505 if (base == NULL) base = _c2i_entry; |
1d7922586cf6
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|
2506 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
1d7922586cf6
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|
2507 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
1d7922586cf6
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|
2508 return base; |
1d7922586cf6
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6197
diff
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|
2509 } |
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|
2510 |
0 | 2511 void AdapterHandlerEntry::relocate(address new_base) { |
6266
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2512 address old_base = base_address(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2513 assert(old_base != NULL, ""); |
1d7922586cf6
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6197
diff
changeset
|
2514 ptrdiff_t delta = new_base - old_base; |
1d7922586cf6
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diff
changeset
|
2515 if (_i2c_entry != NULL) |
0 | 2516 _i2c_entry += delta; |
6266
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diff
changeset
|
2517 if (_c2i_entry != NULL) |
0 | 2518 _c2i_entry += delta; |
6266
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diff
changeset
|
2519 if (_c2i_unverified_entry != NULL) |
0 | 2520 _c2i_unverified_entry += delta; |
6266
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changeset
|
2521 assert(base_address() == new_base, ""); |
0 | 2522 } |
2523 | |
1207
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|
2524 |
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|
2525 void AdapterHandlerEntry::deallocate() { |
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|
2526 delete _fingerprint; |
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|
2527 #ifdef ASSERT |
6197 | 2528 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
2529 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig, mtCode); | |
1207
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|
2530 #endif |
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|
2531 } |
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|
2532 |
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|
2533 |
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|
2534 #ifdef ASSERT |
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diff
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|
2535 // Capture the code before relocation so that it can be compared |
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changeset
|
2536 // against other versions. If the code is captured after relocation |
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diff
changeset
|
2537 // then relative instructions won't be equivalent. |
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2538 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
6197 | 2539 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2540 _code_length = length; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2541 memcpy(_saved_code, buffer, length); |
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parents:
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diff
changeset
|
2542 _total_args_passed = total_args_passed; |
6197 | 2543 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed, mtCode); |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2544 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2545 } |
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2546 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2547 |
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2548 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2549 if (length != _code_length) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2550 return false; |
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6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2551 } |
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2552 for (int i = 0; i < length; i++) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2553 if (buffer[i] != _saved_code[i]) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2554 return false; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2555 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2556 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2557 return true; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2558 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2559 #endif |
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diff
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|
2560 |
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|
2561 |
0 | 2562 // Create a native wrapper for this native method. The wrapper converts the |
2563 // java compiled calling convention to the native convention, handlizes | |
2564 // arguments, and transitions to native. On return from the native we transition | |
2565 // back to java blocking if a safepoint is in progress. | |
2405
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7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
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|
2566 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
0 | 2567 ResourceMark rm; |
2568 nmethod* nm = NULL; | |
2569 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
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|
2570 assert(method->is_native(), "must be native"); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2571 assert(method->is_method_handle_intrinsic() || |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2572 method->has_native_function(), "must have something valid to call!"); |
0 | 2573 |
2574 { | |
2575 // perform the work while holding the lock, but perform any printing outside the lock | |
2576 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2577 // See if somebody beat us to it | |
2578 nm = method->code(); | |
2579 if (nm) { | |
2580 return nm; | |
2581 } | |
2582 | |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2583 ResourceMark rm; |
0 | 2584 |
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2585 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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710
diff
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|
2586 if (buf != NULL) { |
1748 | 2587 CodeBuffer buffer(buf); |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2588 double locs_buf[20]; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2589 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2590 MacroAssembler _masm(&buffer); |
45463a04ca27
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diff
changeset
|
2591 |
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2592 // Fill in the signature array, for the calling-convention call. |
45463a04ca27
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diff
changeset
|
2593 int total_args_passed = method->size_of_parameters(); |
0 | 2594 |
742
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|
2595 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType,total_args_passed); |
45463a04ca27
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|
2596 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair,total_args_passed); |
45463a04ca27
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diff
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|
2597 int i=0; |
45463a04ca27
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|
2598 if( !method->is_static() ) // Pass in receiver first |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2599 sig_bt[i++] = T_OBJECT; |
45463a04ca27
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diff
changeset
|
2600 SignatureStream ss(method->signature()); |
45463a04ca27
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diff
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|
2601 for( ; !ss.at_return_type(); ss.next()) { |
45463a04ca27
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710
diff
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|
2602 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
45463a04ca27
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diff
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|
2603 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
45463a04ca27
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|
2604 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
45463a04ca27
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diff
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|
2605 } |
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diff
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|
2606 assert( i==total_args_passed, "" ); |
45463a04ca27
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diff
changeset
|
2607 BasicType ret_type = ss.type(); |
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diff
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|
2608 |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2609 // Now get the compiled-Java layout as input (or output) arguments. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2610 // NOTE: Stubs for compiled entry points of method handle intrinsics |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2611 // are just trampolines so the argument registers must be outgoing ones. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2612 const bool is_outgoing = method->is_method_handle_intrinsic(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2613 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2614 |
45463a04ca27
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diff
changeset
|
2615 // Generate the compiled-to-native wrapper code |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2616 nm = SharedRuntime::generate_native_wrapper(&_masm, |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2617 method, |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2618 compile_id, |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2619 total_args_passed, |
45463a04ca27
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710
diff
changeset
|
2620 comp_args_on_stack, |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2621 sig_bt,regs, |
45463a04ca27
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diff
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|
2622 ret_type); |
0 | 2623 } |
2624 } | |
2625 | |
2626 // Must unlock before calling set_code | |
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2627 |
0 | 2628 // Install the generated code. |
2629 if (nm != NULL) { | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2630 if (PrintCompilation) { |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2631 ttyLocker ttyl; |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2632 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2633 } |
0 | 2634 method->set_code(method, nm); |
2635 nm->post_compiled_method_load_event(); | |
2636 } else { | |
2637 // CodeCache is full, disable compilation | |
1202 | 2638 CompileBroker::handle_full_code_cache(); |
0 | 2639 } |
2640 return nm; | |
2641 } | |
2642 | |
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2643 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2644 assert(thread == JavaThread::current(), "must be"); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2645 // The code is about to enter a JNI lazy critical native method and |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2646 // _needs_gc is true, so if this thread is already in a critical |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2647 // section then just return, otherwise this thread should block |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2648 // until needs_gc has been cleared. |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2649 if (thread->in_critical()) { |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2650 return; |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2651 } |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2652 // Lock and unlock a critical section to give the system a chance to block |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2653 GC_locker::lock_critical(thread); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2654 GC_locker::unlock_critical(thread); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2655 JRT_END |
0382d2b469b2
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parents:
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diff
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|
2656 |
116
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62
diff
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|
2657 #ifdef HAVE_DTRACE_H |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2658 // Create a dtrace nmethod for this method. The wrapper converts the |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2659 // java compiled calling convention to the native convention, makes a dummy call |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2660 // (actually nops for the size of the call instruction, which become a trap if |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2661 // 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
|
2662 // 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
|
2663 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2664 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2665 ResourceMark rm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2666 nmethod* nm = NULL; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2667 |
018d5b58dd4f
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diff
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|
2668 if (PrintCompilation) { |
018d5b58dd4f
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62
diff
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|
2669 ttyLocker ttyl; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2670 tty->print("--- n%s "); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2671 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
|
2672 if (method->is_static()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2673 tty->print(" (static)"); |
018d5b58dd4f
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62
diff
changeset
|
2674 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2675 tty->cr(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2676 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2677 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2678 { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2679 // perform the work while holding the lock, but perform any printing |
018d5b58dd4f
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62
diff
changeset
|
2680 // outside the lock |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2681 MutexLocker mu(AdapterHandlerLibrary_lock); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2682 // See if somebody beat us to it |
018d5b58dd4f
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diff
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|
2683 nm = method->code(); |
018d5b58dd4f
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62
diff
changeset
|
2684 if (nm) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2685 return nm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2686 } |
018d5b58dd4f
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|
2687 |
742
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changeset
|
2688 ResourceMark rm; |
45463a04ca27
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|
2689 |
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changeset
|
2690 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
45463a04ca27
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|
2691 if (buf != NULL) { |
1748 | 2692 CodeBuffer buffer(buf); |
742
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changeset
|
2693 // Need a few relocation entries |
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2694 double locs_buf[20]; |
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2695 buffer.insts()->initialize_shared_locs( |
116
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2696 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
742
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2697 MacroAssembler _masm(&buffer); |
116
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2698 |
742
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2699 // Generate the compiled-to-native wrapper code |
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2700 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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2701 } |
116
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2702 } |
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2703 return nm; |
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2704 } |
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2705 |
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2706 // the dtrace method needs to convert java lang string to utf8 string. |
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2707 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
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2708 typeArrayOop jlsValue = java_lang_String::value(src); |
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2709 int jlsOffset = java_lang_String::offset(src); |
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2710 int jlsLen = java_lang_String::length(src); |
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2711 jchar* jlsPos = (jlsLen == 0) ? NULL : |
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2712 jlsValue->char_at_addr(jlsOffset); |
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2713 assert(typeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
116
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2714 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
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2715 } |
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2716 #endif // ndef HAVE_DTRACE_H |
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2717 |
0 | 2718 // ------------------------------------------------------------------------- |
2719 // Java-Java calling convention | |
2720 // (what you use when Java calls Java) | |
2721 | |
2722 //------------------------------name_for_receiver---------------------------------- | |
2723 // For a given signature, return the VMReg for parameter 0. | |
2724 VMReg SharedRuntime::name_for_receiver() { | |
2725 VMRegPair regs; | |
2726 BasicType sig_bt = T_OBJECT; | |
2727 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
2728 // Return argument 0 register. In the LP64 build pointers | |
2729 // take 2 registers, but the VM wants only the 'main' name. | |
2730 return regs.first(); | |
2731 } | |
2732 | |
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2733 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
0 | 2734 // This method is returning a data structure allocating as a |
2735 // ResourceObject, so do not put any ResourceMarks in here. | |
2736 char *s = sig->as_C_string(); | |
2737 int len = (int)strlen(s); | |
2738 *s++; len--; // Skip opening paren | |
2739 char *t = s+len; | |
2740 while( *(--t) != ')' ) ; // Find close paren | |
2741 | |
2742 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
2743 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
2744 int cnt = 0; | |
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2745 if (has_receiver) { |
0 | 2746 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
2747 } | |
2748 | |
2749 while( s < t ) { | |
2750 switch( *s++ ) { // Switch on signature character | |
2751 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
2752 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
2753 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
2754 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
2755 case 'I': sig_bt[cnt++] = T_INT; break; | |
2756 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
2757 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
2758 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
2759 case 'V': sig_bt[cnt++] = T_VOID; break; | |
2760 case 'L': // Oop | |
2761 while( *s++ != ';' ) ; // Skip signature | |
2762 sig_bt[cnt++] = T_OBJECT; | |
2763 break; | |
2764 case '[': { // Array | |
2765 do { // Skip optional size | |
2766 while( *s >= '0' && *s <= '9' ) s++; | |
2767 } while( *s++ == '[' ); // Nested arrays? | |
2768 // Skip element type | |
2769 if( s[-1] == 'L' ) | |
2770 while( *s++ != ';' ) ; // Skip signature | |
2771 sig_bt[cnt++] = T_ARRAY; | |
2772 break; | |
2773 } | |
2774 default : ShouldNotReachHere(); | |
2775 } | |
2776 } | |
2777 assert( cnt < 256, "grow table size" ); | |
2778 | |
2779 int comp_args_on_stack; | |
2780 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
2781 | |
2782 // the calling convention doesn't count out_preserve_stack_slots so | |
2783 // we must add that in to get "true" stack offsets. | |
2784 | |
2785 if (comp_args_on_stack) { | |
2786 for (int i = 0; i < cnt; i++) { | |
2787 VMReg reg1 = regs[i].first(); | |
2788 if( reg1->is_stack()) { | |
2789 // Yuck | |
2790 reg1 = reg1->bias(out_preserve_stack_slots()); | |
2791 } | |
2792 VMReg reg2 = regs[i].second(); | |
2793 if( reg2->is_stack()) { | |
2794 // Yuck | |
2795 reg2 = reg2->bias(out_preserve_stack_slots()); | |
2796 } | |
2797 regs[i].set_pair(reg2, reg1); | |
2798 } | |
2799 } | |
2800 | |
2801 // results | |
2802 *arg_size = cnt; | |
2803 return regs; | |
2804 } | |
2805 | |
2806 // OSR Migration Code | |
2807 // | |
2808 // This code is used convert interpreter frames into compiled frames. It is | |
2809 // called from very start of a compiled OSR nmethod. A temp array is | |
2810 // allocated to hold the interesting bits of the interpreter frame. All | |
2811 // active locks are inflated to allow them to move. The displaced headers and | |
2812 // active interpeter locals are copied into the temp buffer. Then we return | |
2813 // back to the compiled code. The compiled code then pops the current | |
2814 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
2815 // copies the interpreter locals and displaced headers where it wants. | |
2816 // Finally it calls back to free the temp buffer. | |
2817 // | |
2818 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
2819 | |
2820 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
2821 | |
2822 #ifdef IA64 | |
2823 ShouldNotReachHere(); // NYI | |
2824 #endif /* IA64 */ | |
2825 | |
2826 // | |
2827 // This code is dependent on the memory layout of the interpreter local | |
2828 // array and the monitors. On all of our platforms the layout is identical | |
2829 // so this code is shared. If some platform lays the their arrays out | |
2830 // differently then this code could move to platform specific code or | |
2831 // the code here could be modified to copy items one at a time using | |
2832 // frame accessor methods and be platform independent. | |
2833 | |
2834 frame fr = thread->last_frame(); | |
2835 assert( fr.is_interpreted_frame(), "" ); | |
2836 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
2837 | |
2838 // Figure out how many monitors are active. | |
2839 int active_monitor_count = 0; | |
2840 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
2841 kptr < fr.interpreter_frame_monitor_begin(); | |
2842 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
2843 if( kptr->obj() != NULL ) active_monitor_count++; | |
2844 } | |
2845 | |
2846 // QQQ we could place number of active monitors in the array so that compiled code | |
2847 // could double check it. | |
2848 | |
2849 methodOop moop = fr.interpreter_frame_method(); | |
2850 int max_locals = moop->max_locals(); | |
2851 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
2852 int buf_size_words = max_locals + active_monitor_count*2; | |
6197 | 2853 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
0 | 2854 |
2855 // Copy the locals. Order is preserved so that loading of longs works. | |
2856 // Since there's no GC I can copy the oops blindly. | |
2857 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
1506 | 2858 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
0 | 2859 (HeapWord*)&buf[0], |
2860 max_locals); | |
2861 | |
2862 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
2863 int i = max_locals; | |
2864 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
2865 kptr2 < fr.interpreter_frame_monitor_begin(); | |
2866 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
2867 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
2868 BasicLock *lock = kptr2->lock(); | |
2869 // Inflate so the displaced header becomes position-independent | |
2870 if (lock->displaced_header()->is_unlocked()) | |
2871 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
2872 // Now the displaced header is free to move | |
2873 buf[i++] = (intptr_t)lock->displaced_header(); | |
2874 buf[i++] = (intptr_t)kptr2->obj(); | |
2875 } | |
2876 } | |
2877 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
2878 | |
2879 return buf; | |
2880 JRT_END | |
2881 | |
2882 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
6197 | 2883 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
0 | 2884 JRT_END |
2885 | |
2886 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
1187
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2887 AdapterHandlerTableIterator iter(_adapters); |
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2888 while (iter.has_next()) { |
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2889 AdapterHandlerEntry* a = iter.next(); |
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2890 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
0 | 2891 } |
2892 return false; | |
2893 } | |
2894 | |
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2895 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
1187
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2896 AdapterHandlerTableIterator iter(_adapters); |
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2897 while (iter.has_next()) { |
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2898 AdapterHandlerEntry* a = iter.next(); |
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2899 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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2900 st->print("Adapter for signature: "); |
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2901 a->print_adapter_on(tty); |
0 | 2902 return; |
2903 } | |
2904 } | |
2905 assert(false, "Should have found handler"); | |
2906 } | |
1187
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2907 |
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2908 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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2909 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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2910 (intptr_t) this, fingerprint()->as_string(), |
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2911 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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2912 |
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2913 } |
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2914 |
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2915 #ifndef PRODUCT |
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2916 |
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2917 void AdapterHandlerLibrary::print_statistics() { |
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2918 _adapters->print_statistics(); |
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2919 } |
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2920 |
0 | 2921 #endif /* PRODUCT */ |