Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/sharedRuntime.cpp @ 23974:f13e777eb255
Merge with jdk8u111-b14
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Wed, 16 Nov 2016 12:32:54 -0800 |
parents | a074ae16281d 56e96eb12a4b |
children | dad95e57f1de |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/compiledIC.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
32 #include "compiler/compileBroker.hpp" | |
33 #include "compiler/compilerOracle.hpp" | |
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34 #include "compiler/disassembler.hpp" |
1972 | 35 #include "interpreter/interpreter.hpp" |
36 #include "interpreter/interpreterRuntime.hpp" | |
37 #include "memory/gcLocker.inline.hpp" | |
38 #include "memory/universe.inline.hpp" | |
39 #include "oops/oop.inline.hpp" | |
40 #include "prims/forte.hpp" | |
41 #include "prims/jvmtiExport.hpp" | |
42 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
43 #include "prims/methodHandles.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "runtime/arguments.hpp" | |
46 #include "runtime/biasedLocking.hpp" | |
47 #include "runtime/handles.inline.hpp" | |
48 #include "runtime/init.hpp" | |
49 #include "runtime/interfaceSupport.hpp" | |
50 #include "runtime/javaCalls.hpp" | |
51 #include "runtime/sharedRuntime.hpp" | |
52 #include "runtime/stubRoutines.hpp" | |
53 #include "runtime/vframe.hpp" | |
54 #include "runtime/vframeArray.hpp" | |
55 #include "utilities/copy.hpp" | |
56 #include "utilities/dtrace.hpp" | |
57 #include "utilities/events.hpp" | |
58 #include "utilities/hashtable.inline.hpp" | |
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59 #include "utilities/macros.hpp" |
1972 | 60 #include "utilities/xmlstream.hpp" |
61 #ifdef TARGET_ARCH_x86 | |
62 # include "nativeInst_x86.hpp" | |
63 # include "vmreg_x86.inline.hpp" | |
64 #endif | |
65 #ifdef TARGET_ARCH_sparc | |
66 # include "nativeInst_sparc.hpp" | |
67 # include "vmreg_sparc.inline.hpp" | |
68 #endif | |
69 #ifdef TARGET_ARCH_zero | |
70 # include "nativeInst_zero.hpp" | |
71 # include "vmreg_zero.inline.hpp" | |
72 #endif | |
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73 #ifdef TARGET_ARCH_arm |
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74 # include "nativeInst_arm.hpp" |
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75 # include "vmreg_arm.inline.hpp" |
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76 #endif |
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77 #ifdef TARGET_ARCH_ppc |
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78 # include "nativeInst_ppc.hpp" |
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79 # include "vmreg_ppc.inline.hpp" |
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80 #endif |
1972 | 81 #ifdef COMPILER1 |
82 #include "c1/c1_Runtime1.hpp" | |
83 #endif | |
84 | |
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85 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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86 |
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87 // Shared stub locations |
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88 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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89 RuntimeStub* SharedRuntime::_wrong_method_abstract_blob; |
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90 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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91 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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92 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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93 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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94 |
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95 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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96 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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97 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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98 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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99 |
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100 #ifdef COMPILER2 |
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101 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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102 #endif // COMPILER2 |
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103 |
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104 |
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105 //----------------------------generate_stubs----------------------------------- |
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106 void SharedRuntime::generate_stubs() { |
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107 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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108 _wrong_method_abstract_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_abstract), "wrong_method_abstract_stub"); |
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109 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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110 _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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111 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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112 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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113 |
22298 | 114 #if defined(COMPILER2) || INCLUDE_JVMCI |
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115 // Vectors are generated only by C2 and JVMCI. |
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116 bool support_wide = is_wide_vector(MaxVectorSize); |
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117 if (support_wide) { |
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118 _polling_page_vectors_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_VECTOR_LOOP); |
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119 } |
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120 #endif // COMPILER2 |
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121 _polling_page_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_LOOP); |
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122 _polling_page_return_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_RETURN); |
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123 |
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124 generate_deopt_blob(); |
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125 |
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126 #ifdef COMPILER2 |
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127 generate_uncommon_trap_blob(); |
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128 #endif // COMPILER2 |
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129 } |
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130 |
0 | 131 #include <math.h> |
132 | |
4006 | 133 #ifndef USDT2 |
0 | 134 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
135 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
136 char*, int, char*, int, char*, int); | |
137 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
138 char*, int, char*, int, char*, int); | |
4006 | 139 #endif /* !USDT2 */ |
0 | 140 |
141 // Implementation of SharedRuntime | |
142 | |
143 #ifndef PRODUCT | |
144 // For statistics | |
145 int SharedRuntime::_ic_miss_ctr = 0; | |
146 int SharedRuntime::_wrong_method_ctr = 0; | |
147 int SharedRuntime::_resolve_static_ctr = 0; | |
148 int SharedRuntime::_resolve_virtual_ctr = 0; | |
149 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
150 int SharedRuntime::_implicit_null_throws = 0; | |
151 int SharedRuntime::_implicit_div0_throws = 0; | |
152 int SharedRuntime::_throw_null_ctr = 0; | |
153 | |
154 int SharedRuntime::_nof_normal_calls = 0; | |
155 int SharedRuntime::_nof_optimized_calls = 0; | |
156 int SharedRuntime::_nof_inlined_calls = 0; | |
157 int SharedRuntime::_nof_megamorphic_calls = 0; | |
158 int SharedRuntime::_nof_static_calls = 0; | |
159 int SharedRuntime::_nof_inlined_static_calls = 0; | |
160 int SharedRuntime::_nof_interface_calls = 0; | |
161 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
162 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
163 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
164 int SharedRuntime::_nof_removable_exceptions = 0; | |
165 | |
166 int SharedRuntime::_new_instance_ctr=0; | |
167 int SharedRuntime::_new_array_ctr=0; | |
168 int SharedRuntime::_multi1_ctr=0; | |
169 int SharedRuntime::_multi2_ctr=0; | |
170 int SharedRuntime::_multi3_ctr=0; | |
171 int SharedRuntime::_multi4_ctr=0; | |
172 int SharedRuntime::_multi5_ctr=0; | |
173 int SharedRuntime::_mon_enter_stub_ctr=0; | |
174 int SharedRuntime::_mon_exit_stub_ctr=0; | |
175 int SharedRuntime::_mon_enter_ctr=0; | |
176 int SharedRuntime::_mon_exit_ctr=0; | |
177 int SharedRuntime::_partial_subtype_ctr=0; | |
178 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
179 int SharedRuntime::_jshort_array_copy_ctr=0; | |
180 int SharedRuntime::_jint_array_copy_ctr=0; | |
181 int SharedRuntime::_jlong_array_copy_ctr=0; | |
182 int SharedRuntime::_oop_array_copy_ctr=0; | |
183 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
184 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
185 int SharedRuntime::_generic_array_copy_ctr=0; | |
186 int SharedRuntime::_slow_array_copy_ctr=0; | |
187 int SharedRuntime::_find_handler_ctr=0; | |
188 int SharedRuntime::_rethrow_ctr=0; | |
189 | |
190 int SharedRuntime::_ICmiss_index = 0; | |
191 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
192 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
193 | |
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194 |
0 | 195 void SharedRuntime::trace_ic_miss(address at) { |
196 for (int i = 0; i < _ICmiss_index; i++) { | |
197 if (_ICmiss_at[i] == at) { | |
198 _ICmiss_count[i]++; | |
199 return; | |
200 } | |
201 } | |
202 int index = _ICmiss_index++; | |
203 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
204 _ICmiss_at[index] = at; | |
205 _ICmiss_count[index] = 1; | |
206 } | |
207 | |
208 void SharedRuntime::print_ic_miss_histogram() { | |
209 if (ICMissHistogram) { | |
210 tty->print_cr ("IC Miss Histogram:"); | |
211 int tot_misses = 0; | |
212 for (int i = 0; i < _ICmiss_index; i++) { | |
213 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
214 tot_misses += _ICmiss_count[i]; | |
215 } | |
216 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
217 } | |
218 } | |
219 #endif // PRODUCT | |
220 | |
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221 #if INCLUDE_ALL_GCS |
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222 |
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223 // G1 write-barrier pre: executed before a pointer store. |
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224 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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225 if (orig == NULL) { |
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226 assert(false, "should be optimized out"); |
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227 return; |
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228 } |
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229 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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230 // store the original value that was in the field reference |
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231 thread->satb_mark_queue().enqueue(orig); |
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232 JRT_END |
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233 |
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234 // G1 write-barrier post: executed after a pointer store. |
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235 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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236 thread->dirty_card_queue().enqueue(card_addr); |
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237 JRT_END |
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238 |
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239 #endif // INCLUDE_ALL_GCS |
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240 |
0 | 241 |
242 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
243 return x * y; | |
244 JRT_END | |
245 | |
246 | |
247 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
248 if (x == min_jlong && y == CONST64(-1)) { | |
249 return x; | |
250 } else { | |
251 return x / y; | |
252 } | |
253 JRT_END | |
254 | |
255 | |
256 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
257 if (x == min_jlong && y == CONST64(-1)) { | |
258 return 0; | |
259 } else { | |
260 return x % y; | |
261 } | |
262 JRT_END | |
263 | |
264 | |
265 const juint float_sign_mask = 0x7FFFFFFF; | |
266 const juint float_infinity = 0x7F800000; | |
267 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
268 const julong double_infinity = CONST64(0x7FF0000000000000); | |
269 | |
270 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
271 #ifdef _WIN64 | |
272 // 64-bit Windows on amd64 returns the wrong values for | |
273 // infinity operands. | |
274 union { jfloat f; juint i; } xbits, ybits; | |
275 xbits.f = x; | |
276 ybits.f = y; | |
277 // x Mod Infinity == x unless x is infinity | |
278 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
279 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
280 return x; | |
281 } | |
282 #endif | |
283 return ((jfloat)fmod((double)x,(double)y)); | |
284 JRT_END | |
285 | |
286 | |
287 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
288 #ifdef _WIN64 | |
289 union { jdouble d; julong l; } xbits, ybits; | |
290 xbits.d = x; | |
291 ybits.d = y; | |
292 // x Mod Infinity == x unless x is infinity | |
293 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
294 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
295 return x; | |
296 } | |
297 #endif | |
298 return ((jdouble)fmod((double)x,(double)y)); | |
299 JRT_END | |
300 | |
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301 #ifdef __SOFTFP__ |
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302 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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303 return x + y; |
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304 JRT_END |
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305 |
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306 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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307 return x - y; |
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308 JRT_END |
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309 |
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310 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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311 return x * y; |
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312 JRT_END |
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313 |
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314 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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315 return x / y; |
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316 JRT_END |
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317 |
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318 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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319 return x + y; |
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320 JRT_END |
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321 |
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322 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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323 return x - y; |
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324 JRT_END |
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325 |
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326 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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327 return x * y; |
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328 JRT_END |
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329 |
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330 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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331 return x / y; |
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332 JRT_END |
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333 |
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334 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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335 return (jfloat)x; |
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336 JRT_END |
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337 |
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338 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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339 return (jdouble)x; |
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340 JRT_END |
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341 |
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342 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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343 return (jdouble)x; |
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344 JRT_END |
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345 |
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346 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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347 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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348 JRT_END |
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349 |
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350 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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351 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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352 JRT_END |
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353 |
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354 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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355 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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356 JRT_END |
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357 |
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358 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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359 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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360 JRT_END |
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361 |
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362 // Functions to return the opposite of the aeabi functions for nan. |
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363 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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364 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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365 JRT_END |
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366 |
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367 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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368 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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369 JRT_END |
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370 |
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371 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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372 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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373 JRT_END |
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374 |
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375 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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376 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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377 JRT_END |
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378 |
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379 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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380 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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381 JRT_END |
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382 |
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383 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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384 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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385 JRT_END |
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386 |
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387 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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388 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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389 JRT_END |
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390 |
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391 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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392 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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393 JRT_END |
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394 |
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395 // Intrinsics make gcc generate code for these. |
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396 float SharedRuntime::fneg(float f) { |
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397 return -f; |
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398 } |
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399 |
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400 double SharedRuntime::dneg(double f) { |
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401 return -f; |
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402 } |
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403 |
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404 #endif // __SOFTFP__ |
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405 |
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406 #if defined(__SOFTFP__) || defined(E500V2) |
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407 // Intrinsics make gcc generate code for these. |
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408 double SharedRuntime::dabs(double f) { |
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409 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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410 } |
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411 |
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412 #endif |
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413 |
14390 | 414 #if defined(__SOFTFP__) || defined(PPC32) |
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415 double SharedRuntime::dsqrt(double f) { |
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416 return sqrt(f); |
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417 } |
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418 #endif |
0 | 419 |
420 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
508
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421 if (g_isnan(x)) |
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422 return 0; |
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423 if (x >= (jfloat) max_jint) |
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424 return max_jint; |
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425 if (x <= (jfloat) min_jint) |
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426 return min_jint; |
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427 return (jint) x; |
0 | 428 JRT_END |
429 | |
430 | |
431 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
508
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432 if (g_isnan(x)) |
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433 return 0; |
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434 if (x >= (jfloat) max_jlong) |
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435 return max_jlong; |
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436 if (x <= (jfloat) min_jlong) |
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437 return min_jlong; |
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438 return (jlong) x; |
0 | 439 JRT_END |
440 | |
441 | |
442 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
508
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443 if (g_isnan(x)) |
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444 return 0; |
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445 if (x >= (jdouble) max_jint) |
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446 return max_jint; |
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447 if (x <= (jdouble) min_jint) |
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448 return min_jint; |
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449 return (jint) x; |
0 | 450 JRT_END |
451 | |
452 | |
453 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
508
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454 if (g_isnan(x)) |
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455 return 0; |
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456 if (x >= (jdouble) max_jlong) |
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457 return max_jlong; |
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458 if (x <= (jdouble) min_jlong) |
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459 return min_jlong; |
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460 return (jlong) x; |
0 | 461 JRT_END |
462 | |
463 | |
464 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
465 return (jfloat)x; | |
466 JRT_END | |
467 | |
468 | |
469 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
470 return (jfloat)x; | |
471 JRT_END | |
472 | |
473 | |
474 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
475 return (jdouble)x; | |
476 JRT_END | |
477 | |
478 // Exception handling accross interpreter/compiler boundaries | |
479 // | |
480 // exception_handler_for_return_address(...) returns the continuation address. | |
481 // The continuation address is the entry point of the exception handler of the | |
482 // previous frame depending on the return address. | |
483 | |
1295 | 484 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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485 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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486 assert(thread->frames_to_pop_failed_realloc() == 0 || Interpreter::contains(return_address), "missed frames to pop?"); |
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487 |
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488 // Reset method handle flag. |
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489 thread->set_is_method_handle_return(false); |
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490 |
22298 | 491 #if INCLUDE_JVMCI |
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492 // JVMCI's ExceptionHandlerStub expects the thread local exception PC to be clear |
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493 // and other exception handler continuations do not read it |
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494 thread->set_exception_pc(NULL); |
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495 #endif |
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496 |
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497 // The fastest case first |
0 | 498 CodeBlob* blob = CodeCache::find_blob(return_address); |
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499 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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500 if (nm != NULL) { |
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501 // Set flag if return address is a method handle call site. |
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502 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
0 | 503 // native nmethods don't have exception handlers |
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504 assert(!nm->is_native_method(), "no exception handler"); |
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505 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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506 if (nm->is_deopt_pc(return_address)) { |
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507 // If we come here because of a stack overflow, the stack may be |
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508 // unguarded. Reguard the stack otherwise if we return to the |
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509 // deopt blob and the stack bang causes a stack overflow we |
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510 // crash. |
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511 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); |
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512 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); |
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513 assert(guard_pages_enabled, "stack banging in deopt blob may cause crash"); |
0 | 514 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
515 } else { | |
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516 return nm->exception_begin(); |
0 | 517 } |
518 } | |
519 | |
520 // Entry code | |
521 if (StubRoutines::returns_to_call_stub(return_address)) { | |
522 return StubRoutines::catch_exception_entry(); | |
523 } | |
524 // Interpreted code | |
525 if (Interpreter::contains(return_address)) { | |
526 return Interpreter::rethrow_exception_entry(); | |
527 } | |
528 | |
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529 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
0 | 530 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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531 |
0 | 532 #ifndef PRODUCT |
533 { ResourceMark rm; | |
534 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
535 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
536 tty->print_cr("b) other problem"); | |
537 } | |
538 #endif // PRODUCT | |
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539 |
0 | 540 ShouldNotReachHere(); |
541 return NULL; | |
542 } | |
543 | |
544 | |
1295 | 545 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
546 return raw_exception_handler_for_return_address(thread, return_address); | |
0 | 547 JRT_END |
548 | |
1295 | 549 |
0 | 550 address SharedRuntime::get_poll_stub(address pc) { |
551 address stub; | |
552 // Look up the code blob | |
553 CodeBlob *cb = CodeCache::find_blob(pc); | |
554 | |
555 // Should be an nmethod | |
556 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
557 | |
558 // Look up the relocation information | |
559 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
560 "safepoint polling: type must be poll" ); | |
561 | |
562 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
563 "Only polling locations are used for safepoint"); | |
564 | |
565 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
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566 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
0 | 567 if (at_poll_return) { |
568 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
569 "polling page return stub not created yet"); | |
1748 | 570 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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571 } else if (has_wide_vectors) { |
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572 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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573 "polling page vectors safepoint stub not created yet"); |
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574 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
0 | 575 } else { |
576 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
577 "polling page safepoint stub not created yet"); | |
1748 | 578 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
0 | 579 } |
580 #ifndef PRODUCT | |
581 if( TraceSafepoint ) { | |
582 char buf[256]; | |
583 jio_snprintf(buf, sizeof(buf), | |
584 "... found polling page %s exception at pc = " | |
585 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
586 at_poll_return ? "return" : "loop", | |
587 (intptr_t)pc, (intptr_t)stub); | |
588 tty->print_raw_cr(buf); | |
589 } | |
590 #endif // PRODUCT | |
591 return stub; | |
592 } | |
593 | |
594 | |
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595 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
0 | 596 assert(caller.is_interpreted_frame(), ""); |
597 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
598 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
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599 oop result = cast_to_oop(*caller.interpreter_frame_tos_at(args_size - 1)); |
0 | 600 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); |
601 return result; | |
602 } | |
603 | |
604 | |
605 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
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606 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 607 vframeStream vfst(thread, true); |
608 methodHandle method = methodHandle(thread, vfst.method()); | |
609 address bcp = method()->bcp_from(vfst.bci()); | |
610 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
611 } | |
612 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
613 } | |
614 | |
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615 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
0 | 616 Handle h_exception = Exceptions::new_exception(thread, name, message); |
617 throw_and_post_jvmti_exception(thread, h_exception); | |
618 } | |
619 | |
610
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620 // The interpreter code to call this tracing function is only |
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621 // called/generated when TraceRedefineClasses has the right bits |
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622 // set. Since obsolete methods are never compiled, we don't have |
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623 // to modify the compilers to generate calls to this function. |
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624 // |
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625 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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626 JavaThread* thread, Method* method)) |
610
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627 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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628 |
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629 if (method->is_obsolete()) { |
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630 // We are calling an obsolete method, but this is not necessarily |
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631 // an error. Our method could have been redefined just after we |
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632 // fetched the Method* from the constant pool. |
610
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633 |
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634 // RC_TRACE macro has an embedded ResourceMark |
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635 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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636 ("calling obsolete method '%s'", |
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637 method->name_and_sig_as_C_string())); |
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638 if (RC_TRACE_ENABLED(0x00002000)) { |
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639 // this option is provided to debug calls to obsolete methods |
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640 guarantee(false, "faulting at call to an obsolete method."); |
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641 } |
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642 } |
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643 return 0; |
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644 JRT_END |
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645 |
0 | 646 // ret_pc points into caller; we are returning caller's exception handler |
647 // for given exception | |
648 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
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649 bool force_unwind, bool top_frame_only, bool& recursive_exception_occurred) { |
0 | 650 assert(nm != NULL, "must exist"); |
651 ResourceMark rm; | |
652 | |
22298 | 653 #if INCLUDE_JVMCI |
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654 if (nm->is_compiled_by_jvmci()) { |
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655 // lookup exception handler for this pc |
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656 int catch_pco = ret_pc - nm->code_begin(); |
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657 ExceptionHandlerTable table(nm); |
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658 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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659 if (t != NULL) { |
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660 return nm->code_begin() + t->pco(); |
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661 } else { |
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662 // there is no exception handler for this pc => deoptimize |
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663 nm->make_not_entrant(); |
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664 |
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665 // Use Deoptimization::deoptimize for all of its side-effects: |
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666 // revoking biases of monitors, gathering traps statistics, logging... |
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667 // it also patches the return pc but we do not care about that |
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668 // since we return a continuation to the deopt_blob below. |
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669 JavaThread* thread = JavaThread::current(); |
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670 RegisterMap reg_map(thread, UseBiasedLocking); |
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671 frame runtime_frame = thread->last_frame(); |
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672 frame caller_frame = runtime_frame.sender(®_map); |
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673 Deoptimization::deoptimize(thread, caller_frame, ®_map, Deoptimization::Reason_not_compiled_exception_handler); |
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674 |
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675 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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676 } |
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677 } |
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678 #endif |
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679 |
0 | 680 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
681 // determine handler bci, if any | |
682 EXCEPTION_MARK; | |
683 | |
684 int handler_bci = -1; | |
685 int scope_depth = 0; | |
686 if (!force_unwind) { | |
687 int bci = sd->bci(); | |
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688 bool recursive_exception = false; |
0 | 689 do { |
690 bool skip_scope_increment = false; | |
691 // exception handler lookup | |
692 KlassHandle ek (THREAD, exception->klass()); | |
7469
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693 methodHandle mh(THREAD, sd->method()); |
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694 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
0 | 695 if (HAS_PENDING_EXCEPTION) { |
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696 recursive_exception = true; |
0 | 697 // We threw an exception while trying to find the exception handler. |
698 // Transfer the new exception to the exception handle which will | |
699 // be set into thread local storage, and do another lookup for an | |
700 // exception handler for this exception, this time starting at the | |
701 // BCI of the exception handler which caused the exception to be | |
702 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
703 // argument to ensure that the correct exception is thrown (4870175). | |
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704 recursive_exception_occurred = true; |
0 | 705 exception = Handle(THREAD, PENDING_EXCEPTION); |
706 CLEAR_PENDING_EXCEPTION; | |
707 if (handler_bci >= 0) { | |
708 bci = handler_bci; | |
709 handler_bci = -1; | |
710 skip_scope_increment = true; | |
711 } | |
712 } | |
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713 else { |
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714 recursive_exception = false; |
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715 } |
0 | 716 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
717 sd = sd->sender(); | |
718 if (sd != NULL) { | |
719 bci = sd->bci(); | |
720 } | |
721 ++scope_depth; | |
722 } | |
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723 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
0 | 724 } |
725 | |
726 // found handling method => lookup exception handler | |
1748 | 727 int catch_pco = ret_pc - nm->code_begin(); |
0 | 728 |
729 ExceptionHandlerTable table(nm); | |
730 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
731 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
732 // Allow abbreviated catch tables. The idea is to allow a method | |
733 // to materialize its exceptions without committing to the exact | |
734 // routing of exceptions. In particular this is needed for adding | |
735 // a synthethic handler to unlock monitors when inlining | |
736 // synchonized methods since the unlock path isn't represented in | |
737 // the bytecodes. | |
738 t = table.entry_for(catch_pco, -1, 0); | |
739 } | |
740 | |
1378
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741 #ifdef COMPILER1 |
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742 if (t == NULL && nm->is_compiled_by_c1()) { |
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743 assert(nm->unwind_handler_begin() != NULL, ""); |
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744 return nm->unwind_handler_begin(); |
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745 } |
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746 #endif |
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747 |
0 | 748 if (t == NULL) { |
749 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
750 tty->print_cr(" Exception:"); | |
751 exception->print(); | |
752 tty->cr(); | |
753 tty->print_cr(" Compiled exception table :"); | |
754 table.print(); | |
755 nm->print_code(); | |
756 guarantee(false, "missing exception handler"); | |
757 return NULL; | |
758 } | |
759 | |
1748 | 760 return nm->code_begin() + t->pco(); |
0 | 761 } |
762 | |
763 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
764 // These errors occur only at call sites | |
765 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
766 JRT_END | |
767 | |
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768 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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769 // These errors occur only at call sites |
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770 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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771 JRT_END |
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772 |
0 | 773 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
774 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
775 JRT_END | |
776 | |
777 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
778 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
779 JRT_END | |
780 | |
781 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
782 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
783 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
784 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
785 JRT_END | |
786 | |
787 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
788 // We avoid using the normal exception construction in this case because | |
789 // it performs an upcall to Java, and we're already out of stack space. | |
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790 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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791 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 792 Handle exception (thread, exception_oop); |
793 if (StackTraceInThrowable) { | |
794 java_lang_Throwable::fill_in_stack_trace(exception); | |
795 } | |
796 throw_and_post_jvmti_exception(thread, exception); | |
797 JRT_END | |
798 | |
22298 | 799 #if INCLUDE_JVMCI |
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800 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
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801 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
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802 thread->set_jvmci_implicit_exception_pc(pc); |
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803 thread->set_pending_deoptimization(Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret)); |
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804 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
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805 } |
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806 #endif |
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807 |
0 | 808 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
809 address pc, | |
810 SharedRuntime::ImplicitExceptionKind exception_kind) | |
811 { | |
812 address target_pc = NULL; | |
813 | |
814 if (Interpreter::contains(pc)) { | |
815 #ifdef CC_INTERP | |
816 // C++ interpreter doesn't throw implicit exceptions | |
817 ShouldNotReachHere(); | |
818 #else | |
819 switch (exception_kind) { | |
820 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
821 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
822 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
823 default: ShouldNotReachHere(); | |
824 } | |
825 #endif // !CC_INTERP | |
826 } else { | |
827 switch (exception_kind) { | |
828 case STACK_OVERFLOW: { | |
829 // Stack overflow only occurs upon frame setup; the callee is | |
830 // going to be unwound. Dispatch to a shared runtime stub | |
831 // which will cause the StackOverflowError to be fabricated | |
832 // and processed. | |
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833 // Stack overflow should never occur during deoptimization: |
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834 // the compiled method bangs the stack by as much as the |
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835 // interpreter would need in case of a deoptimization. The |
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836 // deoptimization blob and uncommon trap blob bang the stack |
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837 // in a debug VM to verify the correctness of the compiled |
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838 // method stack banging. |
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839 assert(thread->deopt_mark() == NULL, "no stack overflow from deopt blob/uncommon trap"); |
4944 | 840 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
0 | 841 return StubRoutines::throw_StackOverflowError_entry(); |
842 } | |
843 | |
844 case IMPLICIT_NULL: { | |
845 if (VtableStubs::contains(pc)) { | |
846 // We haven't yet entered the callee frame. Fabricate an | |
847 // exception and begin dispatching it in the caller. Since | |
848 // the caller was at a call site, it's safe to destroy all | |
849 // caller-saved registers, as these entry points do. | |
850 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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851 |
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852 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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853 if (vt_stub == NULL) return NULL; |
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854 |
0 | 855 if (vt_stub->is_abstract_method_error(pc)) { |
856 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
4944 | 857 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
0 | 858 return StubRoutines::throw_AbstractMethodError_entry(); |
859 } else { | |
4944 | 860 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
0 | 861 return StubRoutines::throw_NullPointerException_at_call_entry(); |
862 } | |
863 } else { | |
864 CodeBlob* cb = CodeCache::find_blob(pc); | |
465
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865 |
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866 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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867 if (cb == NULL) return NULL; |
0 | 868 |
869 // Exception happened in CodeCache. Must be either: | |
870 // 1. Inline-cache check in C2I handler blob, | |
871 // 2. Inline-cache check in nmethod, or | |
872 // 3. Implict null exception in nmethod | |
873 | |
874 if (!cb->is_nmethod()) { | |
11029 | 875 bool is_in_blob = cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(); |
876 if (!is_in_blob) { | |
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Tom Rodriguez <tom.rodriguez@oracle.com>
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877 // Allow normal crash reporting to handle this |
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878 return NULL; |
11029 | 879 } |
4944 | 880 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
0 | 881 // There is no handler here, so we will simply unwind. |
882 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
883 } | |
884 | |
885 // Otherwise, it's an nmethod. Consult its exception handlers. | |
886 nmethod* nm = (nmethod*)cb; | |
887 if (nm->inlinecache_check_contains(pc)) { | |
888 // exception happened inside inline-cache check code | |
889 // => the nmethod is not yet active (i.e., the frame | |
890 // is not set up yet) => use return address pushed by | |
891 // caller => don't push another return address | |
4944 | 892 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
0 | 893 return StubRoutines::throw_NullPointerException_at_call_entry(); |
894 } | |
895 | |
6266
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896 if (nm->method()->is_method_handle_intrinsic()) { |
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897 // exception happened inside MH dispatch code, similar to a vtable stub |
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898 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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899 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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900 } |
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901 |
0 | 902 #ifndef PRODUCT |
903 _implicit_null_throws++; | |
904 #endif | |
22298 | 905 #if INCLUDE_JVMCI |
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906 if (nm->is_compiled_by_jvmci() && nm->pc_desc_at(pc) != NULL) { |
14709
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907 // If there's no PcDesc then we'll die way down inside of |
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908 // deopt instead of just getting normal error reporting, |
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909 // so only go there if it will succeed. |
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910 return deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
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911 } else { |
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912 #endif |
0 | 913 target_pc = nm->continuation_for_implicit_exception(pc); |
22298 | 914 #if INCLUDE_JVMCI |
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915 } |
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916 #endif |
1250 | 917 // If there's an unexpected fault, target_pc might be NULL, |
918 // in which case we want to fall through into the normal | |
919 // error handling code. | |
0 | 920 } |
921 | |
922 break; // fall through | |
923 } | |
924 | |
925 | |
926 case IMPLICIT_DIVIDE_BY_ZERO: { | |
927 nmethod* nm = CodeCache::find_nmethod(pc); | |
928 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
929 #ifndef PRODUCT | |
930 _implicit_div0_throws++; | |
931 #endif | |
22298 | 932 #if INCLUDE_JVMCI |
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933 if (nm->is_compiled_by_jvmci() && nm->pc_desc_at(pc) != NULL) { |
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934 return deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
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935 } else { |
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936 #endif |
0 | 937 target_pc = nm->continuation_for_implicit_exception(pc); |
22298 | 938 #if INCLUDE_JVMCI |
1429
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Lukas Stadler <lukas.stadler@oracle.com>
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939 } |
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940 #endif |
1250 | 941 // If there's an unexpected fault, target_pc might be NULL, |
942 // in which case we want to fall through into the normal | |
943 // error handling code. | |
0 | 944 break; // fall through |
945 } | |
946 | |
947 default: ShouldNotReachHere(); | |
948 } | |
949 | |
950 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
951 | |
952 if (exception_kind == IMPLICIT_NULL) { | |
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953 #ifndef PRODUCT |
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954 // for AbortVMOnException flag |
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955 Exceptions::debug_check_abort("java.lang.NullPointerException"); |
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956 #endif //PRODUCT |
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957 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 958 } else { |
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959 #ifndef PRODUCT |
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960 // for AbortVMOnException flag |
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961 Exceptions::debug_check_abort("java.lang.ArithmeticException"); |
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962 #endif //PRODUCT |
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963 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 964 } |
965 return target_pc; | |
966 } | |
967 | |
968 ShouldNotReachHere(); | |
969 return NULL; | |
970 } | |
971 | |
972 | |
10276
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973 /** |
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974 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
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975 * installed in the native function entry of all native Java methods before |
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976 * they get linked to their actual native methods. |
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977 * |
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978 * \note |
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979 * This method actually never gets called! The reason is because |
f0bc60565ba8
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980 * the interpreter's native entries call NativeLookup::lookup() which |
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981 * throws the exception when the lookup fails. The exception is then |
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982 * caught and forwarded on the return from NativeLookup::lookup() call |
f0bc60565ba8
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983 * before the call to the native function. This might change in the future. |
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984 */ |
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985 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
0 | 986 { |
10276
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987 // We return a bad value here to make sure that the exception is |
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988 // forwarded before we look at the return value. |
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989 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
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990 } |
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991 JNI_END |
0 | 992 |
993 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
994 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
995 } | |
996 | |
997 | |
998 #ifndef PRODUCT | |
999 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
1000 const frame f = thread->last_frame(); | |
1001 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
1002 #ifndef PRODUCT | |
1003 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
1004 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
1005 #endif // !PRODUCT | |
1006 return preserve_this_value; | |
1007 JRT_END | |
1008 #endif // !PRODUCT | |
1009 | |
1010 | |
1011 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
1012 os::yield_all(attempts); | |
1013 JRT_END | |
1014 | |
1015 | |
1016 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
1017 assert(obj->is_oop(), "must be a valid oop"); | |
22298 | 1018 #if INCLUDE_JVMCI |
22442
7eda81bed2f3
added comment explaining why SharedRuntime::register_finalizer performs a dynamic check that an object has a finalizer
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|
1019 // This removes the requirement for JVMCI compilers to emit code |
7eda81bed2f3
added comment explaining why SharedRuntime::register_finalizer performs a dynamic check that an object has a finalizer
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1020 // performing a dynamic check that obj has a finalizer before |
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1021 // calling this routine. There should be no performance impact |
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1022 // for C1 since it emits a dynamic check. C2 and the interpreter |
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1023 // uses other runtime routines for registering finalizers. |
8968
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Change the register_finalizer stub to not overwrite any registers.
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1024 if (!obj->klass()->has_finalizer()) { |
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1025 return; |
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1026 } |
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1027 #endif |
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1028 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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1029 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 1030 JRT_END |
1031 | |
1032 | |
1033 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
1034 if (thread != NULL) { | |
1035 if (thread->is_Java_thread()) { | |
1036 oop obj = ((JavaThread*)thread)->threadObj(); | |
1037 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
1038 } | |
1039 } | |
1040 return 0; | |
1041 } | |
1042 | |
1043 /** | |
1044 * This function ought to be a void function, but cannot be because | |
1045 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
1046 * 6254741. Once that is fixed we can remove the dummy return value. | |
1047 */ | |
17884
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1048 int SharedRuntime::dtrace_object_alloc(oopDesc* o, int size) { |
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1049 return dtrace_object_alloc_base(Thread::current(), o, size); |
0 | 1050 } |
1051 | |
17884
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1052 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o, int size) { |
0 | 1053 assert(DTraceAllocProbes, "wrong call"); |
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1054 Klass* klass = o->klass(); |
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1055 Symbol* name = klass->name(); |
4006 | 1056 #ifndef USDT2 |
0 | 1057 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
1058 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
4006 | 1059 #else /* USDT2 */ |
1060 HOTSPOT_OBJECT_ALLOC( | |
1061 get_java_tid(thread), | |
1062 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
1063 #endif /* USDT2 */ | |
0 | 1064 return 0; |
1065 } | |
1066 | |
1067 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1068 JavaThread* thread, Method* method)) |
0 | 1069 assert(DTraceMethodProbes, "wrong call"); |
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1070 Symbol* kname = method->klass_name(); |
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1071 Symbol* name = method->name(); |
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1072 Symbol* sig = method->signature(); |
4006 | 1073 #ifndef USDT2 |
0 | 1074 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
1075 kname->bytes(), kname->utf8_length(), | |
1076 name->bytes(), name->utf8_length(), | |
1077 sig->bytes(), sig->utf8_length()); | |
4006 | 1078 #else /* USDT2 */ |
1079 HOTSPOT_METHOD_ENTRY( | |
1080 get_java_tid(thread), | |
1081 (char *) kname->bytes(), kname->utf8_length(), | |
1082 (char *) name->bytes(), name->utf8_length(), | |
1083 (char *) sig->bytes(), sig->utf8_length()); | |
1084 #endif /* USDT2 */ | |
0 | 1085 return 0; |
1086 JRT_END | |
1087 | |
1088 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1089 JavaThread* thread, Method* method)) |
0 | 1090 assert(DTraceMethodProbes, "wrong call"); |
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1091 Symbol* kname = method->klass_name(); |
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1092 Symbol* name = method->name(); |
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1093 Symbol* sig = method->signature(); |
4006 | 1094 #ifndef USDT2 |
0 | 1095 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
1096 kname->bytes(), kname->utf8_length(), | |
1097 name->bytes(), name->utf8_length(), | |
1098 sig->bytes(), sig->utf8_length()); | |
4006 | 1099 #else /* USDT2 */ |
1100 HOTSPOT_METHOD_RETURN( | |
1101 get_java_tid(thread), | |
1102 (char *) kname->bytes(), kname->utf8_length(), | |
1103 (char *) name->bytes(), name->utf8_length(), | |
1104 (char *) sig->bytes(), sig->utf8_length()); | |
1105 #endif /* USDT2 */ | |
0 | 1106 return 0; |
1107 JRT_END | |
1108 | |
1109 | |
1110 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
1111 // for a call current in progress, i.e., arguments has been pushed on stack | |
1112 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
1113 // vtable updates, etc. Caller frame must be compiled. | |
1114 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
1115 ResourceMark rm(THREAD); | |
1116 | |
1117 // last java frame on stack (which includes native call frames) | |
1118 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
1119 | |
1120 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
1121 } | |
1122 | |
1123 | |
1124 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
1125 // for a call current in progress, i.e., arguments has been pushed on stack | |
1126 // but callee has not been invoked yet. Caller frame must be compiled. | |
1127 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
1128 vframeStream& vfst, | |
1129 Bytecodes::Code& bc, | |
1130 CallInfo& callinfo, TRAPS) { | |
1131 Handle receiver; | |
1132 Handle nullHandle; //create a handy null handle for exception returns | |
1133 | |
1134 assert(!vfst.at_end(), "Java frame must exist"); | |
1135 | |
1136 // Find caller and bci from vframe | |
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1137 methodHandle caller(THREAD, vfst.method()); |
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1138 int bci = vfst.bci(); |
0 | 1139 |
1140 // Find bytecode | |
2142 | 1141 Bytecode_invoke bytecode(caller, bci); |
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1142 bc = bytecode.invoke_code(); |
2142 | 1143 int bytecode_index = bytecode.index(); |
0 | 1144 |
1145 // Find receiver for non-static call | |
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1146 if (bc != Bytecodes::_invokestatic && |
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1147 bc != Bytecodes::_invokedynamic && |
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1148 bc != Bytecodes::_invokehandle) { |
0 | 1149 // This register map must be update since we need to find the receiver for |
1150 // compiled frames. The receiver might be in a register. | |
1151 RegisterMap reg_map2(thread); | |
1152 frame stubFrame = thread->last_frame(); | |
1153 // Caller-frame is a compiled frame | |
1154 frame callerFrame = stubFrame.sender(®_map2); | |
1155 | |
2142 | 1156 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
0 | 1157 if (callee.is_null()) { |
1158 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
1159 } | |
1160 // Retrieve from a compiled argument list | |
1161 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
1162 | |
1163 if (receiver.is_null()) { | |
1164 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
1165 } | |
1166 } | |
1167 | |
1168 // Resolve method. This is parameterized by bytecode. | |
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1169 constantPoolHandle constants(THREAD, caller->constants()); |
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1170 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
0 | 1171 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
1172 | |
1173 #ifdef ASSERT | |
1174 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1175 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic && bc != Bytecodes::_invokehandle) { |
0 | 1176 assert(receiver.not_null(), "should have thrown exception"); |
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1177 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1178 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
0 | 1179 // klass is already loaded |
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1180 KlassHandle static_receiver_klass(THREAD, rk); |
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1181 // Method handle invokes might have been optimized to a direct call |
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1182 // so don't check for the receiver class. |
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1183 // FIXME this weakens the assert too much |
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1184 methodHandle callee = callinfo.selected_method(); |
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1185 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1186 callee->is_method_handle_intrinsic() || |
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1187 callee->is_compiled_lambda_form(), |
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1188 "actual receiver must be subclass of static receiver klass"); |
0 | 1189 if (receiver_klass->oop_is_instance()) { |
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1190 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
0 | 1191 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1192 receiver_klass()->print(); |
0 | 1193 } |
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1194 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
0 | 1195 } |
1196 } | |
1197 #endif | |
1198 | |
1199 return receiver; | |
1200 } | |
1201 | |
1202 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
1203 ResourceMark rm(THREAD); | |
1204 // We need first to check if any Java activations (compiled, interpreted) | |
1205 // exist on the stack since last JavaCall. If not, we need | |
1206 // to get the target method from the JavaCall wrapper. | |
1207 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
1208 methodHandle callee_method; | |
1209 if (vfst.at_end()) { | |
1210 // No Java frames were found on stack since we did the JavaCall. | |
1211 // Hence the stack can only contain an entry_frame. We need to | |
1212 // find the target method from the stub frame. | |
1213 RegisterMap reg_map(thread, false); | |
1214 frame fr = thread->last_frame(); | |
1215 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
1216 fr = fr.sender(®_map); | |
1217 assert(fr.is_entry_frame(), "must be"); | |
1218 // fr is now pointing to the entry frame. | |
1219 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
1220 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
1221 } else { | |
1222 Bytecodes::Code bc; | |
1223 CallInfo callinfo; | |
1224 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
1225 callee_method = callinfo.selected_method(); | |
1226 } | |
1227 assert(callee_method()->is_method(), "must be"); | |
1228 return callee_method; | |
1229 } | |
1230 | |
1231 // Resolves a call. | |
1232 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
1233 bool is_virtual, | |
1234 bool is_optimized, TRAPS) { | |
1235 methodHandle callee_method; | |
1236 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1237 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
1238 int retry_count = 0; | |
1239 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
1142 | 1240 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
0 | 1241 // If has a pending exception then there is no need to re-try to |
1242 // resolve this method. | |
1243 // If the method has been redefined, we need to try again. | |
1244 // Hack: we have no way to update the vtables of arrays, so don't | |
1245 // require that java.lang.Object has been updated. | |
1246 | |
1247 // It is very unlikely that method is redefined more than 100 times | |
1248 // in the middle of resolve. If it is looping here more than 100 times | |
1249 // means then there could be a bug here. | |
1250 guarantee((retry_count++ < 100), | |
1251 "Could not resolve to latest version of redefined method"); | |
1252 // method is redefined in the middle of resolve so re-try. | |
1253 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1254 } | |
1255 } | |
1256 return callee_method; | |
1257 } | |
1258 | |
1259 // Resolves a call. The compilers generate code for calls that go here | |
1260 // and are patched with the real destination of the call. | |
1261 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
1262 bool is_virtual, | |
1263 bool is_optimized, TRAPS) { | |
1264 | |
1265 ResourceMark rm(thread); | |
1266 RegisterMap cbl_map(thread, false); | |
1267 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
1268 | |
1295 | 1269 CodeBlob* caller_cb = caller_frame.cb(); |
1270 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
1271 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
13441 | 1272 |
0 | 1273 // make sure caller is not getting deoptimized |
1274 // and removed before we are done with it. | |
1275 // CLEANUP - with lazy deopt shouldn't need this lock | |
1295 | 1276 nmethodLocker caller_lock(caller_nm); |
0 | 1277 |
1278 // determine call info & receiver | |
1279 // note: a) receiver is NULL for static calls | |
1280 // b) an exception is thrown if receiver is NULL for non-static calls | |
1281 CallInfo call_info; | |
1282 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
1283 Handle receiver = find_callee_info(thread, invoke_code, | |
1284 call_info, CHECK_(methodHandle())); | |
1285 methodHandle callee_method = call_info.selected_method(); | |
1286 | |
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1287 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1288 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1289 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1290 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
0 | 1291 |
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1292 assert(caller_nm->is_alive(), "It should be alive"); |
13441 | 1293 |
0 | 1294 #ifndef PRODUCT |
1295 // tracing/debugging/statistics | |
1296 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
1297 (is_virtual) ? (&_resolve_virtual_ctr) : | |
1298 (&_resolve_static_ctr); | |
1299 Atomic::inc(addr); | |
1300 | |
1301 if (TraceCallFixup) { | |
1302 ResourceMark rm(thread); | |
1303 tty->print("resolving %s%s (%s) call to", | |
1304 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
1305 Bytecodes::name(invoke_code)); | |
1306 callee_method->print_short_name(tty); | |
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1307 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
0 | 1308 } |
1309 #endif | |
1310 | |
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1311 // JSR 292 key invariant: |
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1312 // If the resolved method is a MethodHandle invoke target, the call |
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1313 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1314 // leaving the stack in a state unknown to either caller or callee |
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1315 // TODO detune for now but we might need it again |
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1316 // assert(!callee_method->is_compiled_lambda_form() || |
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1317 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
1295 | 1318 |
0 | 1319 // Compute entry points. This might require generation of C2I converter |
1320 // frames, so we cannot be holding any locks here. Furthermore, the | |
1321 // computation of the entry points is independent of patching the call. We | |
1322 // always return the entry-point, but we only patch the stub if the call has | |
1323 // not been deoptimized. Return values: For a virtual call this is an | |
1324 // (cached_oop, destination address) pair. For a static call/optimized | |
1325 // virtual this is just a destination address. | |
1326 | |
1327 StaticCallInfo static_call_info; | |
1328 CompiledICInfo virtual_call_info; | |
1329 | |
1330 // Make sure the callee nmethod does not get deoptimized and removed before | |
1331 // we are done patching the code. | |
1295 | 1332 nmethod* callee_nm = callee_method->code(); |
13441 | 1333 if (callee_nm != NULL && !callee_nm->is_in_use()) { |
1334 // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded. | |
1335 callee_nm = NULL; | |
1336 } | |
1295 | 1337 nmethodLocker nl_callee(callee_nm); |
0 | 1338 #ifdef ASSERT |
1295 | 1339 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
0 | 1340 #endif |
1341 | |
1342 if (is_virtual) { | |
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1343 assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check"); |
0 | 1344 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); |
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1345 KlassHandle h_klass(THREAD, invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass()); |
0 | 1346 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, |
1347 is_optimized, static_bound, virtual_call_info, | |
1348 CHECK_(methodHandle())); | |
1349 } else { | |
1350 // static call | |
1351 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
1352 } | |
1353 | |
1354 // grab lock, check for deoptimization and potentially patch caller | |
1355 { | |
1356 MutexLocker ml_patch(CompiledIC_lock); | |
1357 | |
13441 | 1358 // Lock blocks for safepoint during which both nmethods can change state. |
1359 | |
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1360 // Now that we are ready to patch if the Method* was redefined then |
0 | 1361 // don't update call site and let the caller retry. |
13441 | 1362 // Don't update call site if callee nmethod was unloaded or deoptimized. |
1363 // Don't update call site if callee nmethod was replaced by an other nmethod | |
1364 // which may happen when multiply alive nmethod (tiered compilation) | |
1365 // will be supported. | |
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1366 if (!callee_method->is_old() && |
13441 | 1367 (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) { |
0 | 1368 #ifdef ASSERT |
1369 // We must not try to patch to jump to an already unloaded method. | |
1370 if (dest_entry_point != 0) { | |
13441 | 1371 CodeBlob* cb = CodeCache::find_blob(dest_entry_point); |
1372 assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm), | |
1373 "should not call unloaded nmethod"); | |
0 | 1374 } |
1375 #endif | |
1376 if (is_virtual) { | |
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1377 nmethod* nm = callee_nm; |
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1378 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1379 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
0 | 1380 if (inline_cache->is_clean()) { |
1381 inline_cache->set_to_monomorphic(virtual_call_info); | |
1382 } | |
1383 } else { | |
1384 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
1385 if (ssc->is_clean()) ssc->set(static_call_info); | |
1386 } | |
1387 } | |
1388 | |
1389 } // unlock CompiledIC_lock | |
1390 | |
1391 return callee_method; | |
1392 } | |
1393 | |
1394 | |
1395 // Inline caches exist only in compiled code | |
1396 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
1397 #ifdef ASSERT | |
1398 RegisterMap reg_map(thread, false); | |
1399 frame stub_frame = thread->last_frame(); | |
1400 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1401 frame caller_frame = stub_frame.sender(®_map); | |
1402 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
1403 #endif /* ASSERT */ | |
1404 | |
1405 methodHandle callee_method; | |
1406 JRT_BLOCK | |
1407 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1408 // Return Method* through TLS |
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1409 thread->set_vm_result_2(callee_method()); |
0 | 1410 JRT_BLOCK_END |
1411 // return compiled code entry point after potential safepoints | |
1412 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1413 return callee_method->verified_code_entry(); | |
1414 JRT_END | |
1415 | |
1416 | |
1417 // Handle call site that has been made non-entrant | |
1418 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
1419 // 6243940 We might end up in here if the callee is deoptimized | |
1420 // as we race to call it. We don't want to take a safepoint if | |
1421 // the caller was interpreted because the caller frame will look | |
1422 // interpreted to the stack walkers and arguments are now | |
1423 // "compiled" so it is much better to make this transition | |
1424 // invisible to the stack walking code. The i2c path will | |
1425 // place the callee method in the callee_target. It is stashed | |
1426 // there because if we try and find the callee by normal means a | |
1427 // safepoint is possible and have trouble gc'ing the compiled args. | |
1428 RegisterMap reg_map(thread, false); | |
1429 frame stub_frame = thread->last_frame(); | |
1430 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1431 frame caller_frame = stub_frame.sender(®_map); | |
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1432 |
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1433 if (caller_frame.is_interpreted_frame() || |
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1434 caller_frame.is_entry_frame()) { |
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1435 Method* callee = thread->callee_target(); |
0 | 1436 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1437 thread->set_vm_result_2(callee); |
0 | 1438 thread->set_callee_target(NULL); |
1439 return callee->get_c2i_entry(); | |
1440 } | |
1441 | |
1442 // Must be compiled to compiled path which is safe to stackwalk | |
1443 methodHandle callee_method; | |
1444 JRT_BLOCK | |
1445 // Force resolving of caller (if we called from compiled frame) | |
1446 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1447 thread->set_vm_result_2(callee_method()); |
0 | 1448 JRT_BLOCK_END |
1449 // return compiled code entry point after potential safepoints | |
1450 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1451 return callee_method->verified_code_entry(); | |
1452 JRT_END | |
1453 | |
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1454 // Handle abstract method call |
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1455 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_abstract(JavaThread* thread)) |
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1456 return StubRoutines::throw_AbstractMethodError_entry(); |
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1457 JRT_END |
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1458 |
0 | 1459 |
1460 // resolve a static call and patch code | |
1461 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
1462 methodHandle callee_method; | |
1463 JRT_BLOCK | |
1464 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1465 thread->set_vm_result_2(callee_method()); |
0 | 1466 JRT_BLOCK_END |
1467 // return compiled code entry point after potential safepoints | |
1468 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1469 return callee_method->verified_code_entry(); | |
1470 JRT_END | |
1471 | |
1472 | |
1473 // resolve virtual call and update inline cache to monomorphic | |
1474 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
1475 methodHandle callee_method; | |
1476 JRT_BLOCK | |
1477 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1478 thread->set_vm_result_2(callee_method()); |
0 | 1479 JRT_BLOCK_END |
1480 // return compiled code entry point after potential safepoints | |
1481 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1482 return callee_method->verified_code_entry(); | |
1483 JRT_END | |
1484 | |
1485 | |
1486 // Resolve a virtual call that can be statically bound (e.g., always | |
1487 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
1488 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
1489 methodHandle callee_method; | |
1490 JRT_BLOCK | |
1491 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1492 thread->set_vm_result_2(callee_method()); |
0 | 1493 JRT_BLOCK_END |
1494 // return compiled code entry point after potential safepoints | |
1495 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1496 return callee_method->verified_code_entry(); | |
1497 JRT_END | |
1498 | |
1499 | |
1500 | |
1501 | |
1502 | |
1503 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
1504 ResourceMark rm(thread); | |
1505 CallInfo call_info; | |
1506 Bytecodes::Code bc; | |
1507 | |
1508 // receiver is NULL for static calls. An exception is thrown for NULL | |
1509 // receivers for non-static calls | |
1510 Handle receiver = find_callee_info(thread, bc, call_info, | |
1511 CHECK_(methodHandle())); | |
1512 // Compiler1 can produce virtual call sites that can actually be statically bound | |
1513 // If we fell thru to below we would think that the site was going megamorphic | |
1514 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
1515 // we'd try and do a vtable dispatch however methods that can be statically bound | |
1516 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
1517 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
1518 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
1519 // never to miss again. I don't believe C2 will produce code like this but if it | |
1520 // did this would still be the correct thing to do for it too, hence no ifdef. | |
1521 // | |
1522 if (call_info.resolved_method()->can_be_statically_bound()) { | |
1523 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
1524 if (TraceCallFixup) { | |
1525 RegisterMap reg_map(thread, false); | |
1526 frame caller_frame = thread->last_frame().sender(®_map); | |
1527 ResourceMark rm(thread); | |
1528 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
1529 callee_method->print_short_name(tty); | |
1530 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
1531 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1532 } | |
1533 return callee_method; | |
1534 } | |
1535 | |
1536 methodHandle callee_method = call_info.selected_method(); | |
1537 | |
1538 bool should_be_mono = false; | |
1539 | |
1540 #ifndef PRODUCT | |
1541 Atomic::inc(&_ic_miss_ctr); | |
1542 | |
1543 // Statistics & Tracing | |
1544 if (TraceCallFixup) { | |
1545 ResourceMark rm(thread); | |
1546 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
1547 callee_method->print_short_name(tty); | |
1548 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1549 } | |
1550 | |
1551 if (ICMissHistogram) { | |
1552 MutexLocker m(VMStatistic_lock); | |
1553 RegisterMap reg_map(thread, false); | |
1554 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
1555 // produce statistics under the lock | |
1556 trace_ic_miss(f.pc()); | |
1557 } | |
1558 #endif | |
1559 | |
1560 // install an event collector so that when a vtable stub is created the | |
1561 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
1562 // event can't be posted when the stub is created as locks are held | |
1563 // - instead the event will be deferred until the event collector goes | |
1564 // out of scope. | |
1565 JvmtiDynamicCodeEventCollector event_collector; | |
1566 | |
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1567 // Update inline cache to megamorphic. Skip update if we are called from interpreted. |
0 | 1568 { MutexLocker ml_patch (CompiledIC_lock); |
1569 RegisterMap reg_map(thread, false); | |
1570 frame caller_frame = thread->last_frame().sender(®_map); | |
1571 CodeBlob* cb = caller_frame.cb(); | |
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1572 if (cb->is_nmethod()) { |
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1573 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
0 | 1574 bool should_be_mono = false; |
1575 if (inline_cache->is_optimized()) { | |
1576 if (TraceCallFixup) { | |
1577 ResourceMark rm(thread); | |
1578 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
1579 callee_method->print_short_name(tty); | |
1580 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1581 } | |
1582 should_be_mono = true; | |
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1583 } else if (inline_cache->is_icholder_call()) { |
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1584 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1585 if ( ic_oop != NULL) { |
0 | 1586 |
1587 if (receiver()->klass() == ic_oop->holder_klass()) { | |
1588 // This isn't a real miss. We must have seen that compiled code | |
1589 // is now available and we want the call site converted to a | |
1590 // monomorphic compiled call site. | |
1591 // We can't assert for callee_method->code() != NULL because it | |
1592 // could have been deoptimized in the meantime | |
1593 if (TraceCallFixup) { | |
1594 ResourceMark rm(thread); | |
1595 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
1596 callee_method->print_short_name(tty); | |
1597 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1598 } | |
1599 should_be_mono = true; | |
1600 } | |
1601 } | |
1602 } | |
1603 | |
1604 if (should_be_mono) { | |
1605 | |
1606 // We have a path that was monomorphic but was going interpreted | |
1607 // and now we have (or had) a compiled entry. We correct the IC | |
1608 // by using a new icBuffer. | |
1609 CompiledICInfo info; | |
1610 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
1611 inline_cache->compute_monomorphic_entry(callee_method, | |
1612 receiver_klass, | |
1613 inline_cache->is_optimized(), | |
1614 false, | |
1615 info, CHECK_(methodHandle())); | |
1616 inline_cache->set_to_monomorphic(info); | |
1617 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
12294 | 1618 // Potential change to megamorphic |
1619 bool successful = inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
1620 if (!successful) { | |
1621 inline_cache->set_to_clean(); | |
1622 } | |
0 | 1623 } else { |
1624 // Either clean or megamorphic | |
1625 } | |
1626 } | |
1627 } // Release CompiledIC_lock | |
1628 | |
1629 return callee_method; | |
1630 } | |
1631 | |
1632 // | |
1633 // Resets a call-site in compiled code so it will get resolved again. | |
1634 // This routines handles both virtual call sites, optimized virtual call | |
1635 // sites, and static call sites. Typically used to change a call sites | |
1636 // destination from compiled to interpreted. | |
1637 // | |
1638 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
1639 ResourceMark rm(thread); | |
1640 RegisterMap reg_map(thread, false); | |
1641 frame stub_frame = thread->last_frame(); | |
1642 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
1643 frame caller = stub_frame.sender(®_map); | |
1644 | |
1645 // Do nothing if the frame isn't a live compiled frame. | |
1646 // nmethod could be deoptimized by the time we get here | |
1647 // so no update to the caller is needed. | |
1648 | |
1649 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
1650 | |
1651 address pc = caller.pc(); | |
1652 | |
1653 // Default call_addr is the location of the "basic" call. | |
1654 // Determine the address of the call we a reresolving. With | |
1655 // Inline Caches we will always find a recognizable call. | |
1656 // With Inline Caches disabled we may or may not find a | |
1657 // recognizable call. We will always find a call for static | |
1658 // calls and for optimized virtual calls. For vanilla virtual | |
1659 // calls it depends on the state of the UseInlineCaches switch. | |
1660 // | |
1661 // With Inline Caches disabled we can get here for a virtual call | |
1662 // for two reasons: | |
1663 // 1 - calling an abstract method. The vtable for abstract methods | |
1664 // will run us thru handle_wrong_method and we will eventually | |
1665 // end up in the interpreter to throw the ame. | |
1666 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
1667 // call and between the time we fetch the entry address and | |
1668 // we jump to it the target gets deoptimized. Similar to 1 | |
1669 // we will wind up in the interprter (thru a c2i with c2). | |
1670 // | |
1671 address call_addr = NULL; | |
1672 { | |
1673 // Get call instruction under lock because another thread may be | |
1674 // busy patching it. | |
1675 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1676 // Location of call instruction | |
1677 if (NativeCall::is_call_before(pc)) { | |
1678 NativeCall *ncall = nativeCall_before(pc); | |
1679 call_addr = ncall->instruction_address(); | |
1680 } | |
1681 } | |
1682 | |
1683 // Check for static or virtual call | |
1684 bool is_static_call = false; | |
1685 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
1686 // Make sure nmethod doesn't get deoptimized and removed until | |
1687 // this is done with it. | |
1688 // CLEANUP - with lazy deopt shouldn't need this lock | |
1689 nmethodLocker nmlock(caller_nm); | |
1690 | |
1691 if (call_addr != NULL) { | |
1692 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
1693 int ret = iter.next(); // Get item | |
1694 if (ret) { | |
1695 assert(iter.addr() == call_addr, "must find call"); | |
1696 if (iter.type() == relocInfo::static_call_type) { | |
1697 is_static_call = true; | |
1698 } else { | |
1699 assert(iter.type() == relocInfo::virtual_call_type || | |
1700 iter.type() == relocInfo::opt_virtual_call_type | |
1701 , "unexpected relocInfo. type"); | |
1702 } | |
1703 } else { | |
1704 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
1705 } | |
1706 | |
1707 // Cleaning the inline cache will force a new resolve. This is more robust | |
1708 // than directly setting it to the new destination, since resolving of calls | |
1709 // is always done through the same code path. (experience shows that it | |
1710 // leads to very hard to track down bugs, if an inline cache gets updated | |
1711 // to a wrong method). It should not be performance critical, since the | |
1712 // resolve is only done once. | |
1713 | |
1714 MutexLocker ml(CompiledIC_lock); | |
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1715 if (is_static_call) { |
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1716 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); |
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1717 ssc->set_to_clean(); |
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1718 } else { |
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1719 // compiled, dispatched call (which used to call an interpreted method) |
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1720 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
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1721 inline_cache->set_to_clean(); |
0 | 1722 } |
1723 } | |
1724 | |
1725 } | |
1726 | |
1727 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
1728 | |
1729 | |
1730 #ifndef PRODUCT | |
1731 Atomic::inc(&_wrong_method_ctr); | |
1732 | |
1733 if (TraceCallFixup) { | |
1734 ResourceMark rm(thread); | |
1735 tty->print("handle_wrong_method reresolving call to"); | |
1736 callee_method->print_short_name(tty); | |
1737 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1738 } | |
1739 #endif | |
1740 | |
1741 return callee_method; | |
1742 } | |
1743 | |
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1744 #ifdef ASSERT |
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1745 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1746 const BasicType* sig_bt, |
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1747 const VMRegPair* regs) { |
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1748 ResourceMark rm; |
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1749 const int total_args_passed = method->size_of_parameters(); |
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1750 const VMRegPair* regs_with_member_name = regs; |
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1751 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1752 |
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1753 const int member_arg_pos = total_args_passed - 1; |
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1754 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1755 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1756 |
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1757 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1758 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1759 |
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1760 for (int i = 0; i < member_arg_pos; i++) { |
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1761 VMReg a = regs_with_member_name[i].first(); |
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1762 VMReg b = regs_without_member_name[i].first(); |
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1763 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1764 } |
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1765 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1766 } |
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1767 #endif |
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1768 |
0 | 1769 // --------------------------------------------------------------------------- |
1770 // We are calling the interpreter via a c2i. Normally this would mean that | |
1771 // we were called by a compiled method. However we could have lost a race | |
1772 // where we went int -> i2c -> c2i and so the caller could in fact be | |
1205 | 1773 // interpreted. If the caller is compiled we attempt to patch the caller |
0 | 1774 // so he no longer calls into the interpreter. |
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1775 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1776 Method* moop(method); |
0 | 1777 |
1778 address entry_point = moop->from_compiled_entry(); | |
1779 | |
1780 // It's possible that deoptimization can occur at a call site which hasn't | |
1781 // been resolved yet, in which case this function will be called from | |
1782 // an nmethod that has been patched for deopt and we can ignore the | |
1783 // request for a fixup. | |
1784 // Also it is possible that we lost a race in that from_compiled_entry | |
1785 // is now back to the i2c in that case we don't need to patch and if | |
1786 // we did we'd leap into space because the callsite needs to use | |
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1787 // "to interpreter" stub in order to load up the Method*. Don't |
0 | 1788 // ask me how I know this... |
1789 | |
1790 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
1205 | 1791 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
1792 return; | |
1793 } | |
1794 | |
1795 // The check above makes sure this is a nmethod. | |
1796 nmethod* nm = cb->as_nmethod_or_null(); | |
1797 assert(nm, "must be"); | |
1798 | |
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1799 // Get the return PC for the passed caller PC. |
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1800 address return_pc = caller_pc + frame::pc_return_offset; |
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1801 |
0 | 1802 // There is a benign race here. We could be attempting to patch to a compiled |
1803 // entry point at the same time the callee is being deoptimized. If that is | |
1804 // the case then entry_point may in fact point to a c2i and we'd patch the | |
1805 // call site with the same old data. clear_code will set code() to NULL | |
1806 // at the end of it. If we happen to see that NULL then we can skip trying | |
1807 // to patch. If we hit the window where the callee has a c2i in the | |
1808 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
1809 // and patch the code with the same old data. Asi es la vida. | |
1810 | |
1811 if (moop->code() == NULL) return; | |
1812 | |
1205 | 1813 if (nm->is_in_use()) { |
0 | 1814 |
1815 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
1816 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1817 if (NativeCall::is_call_before(return_pc)) { |
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1818 NativeCall *call = nativeCall_before(return_pc); |
0 | 1819 // |
1820 // bug 6281185. We might get here after resolving a call site to a vanilla | |
1821 // virtual call. Because the resolvee uses the verified entry it may then | |
1822 // see compiled code and attempt to patch the site by calling us. This would | |
1823 // then incorrectly convert the call site to optimized and its downhill from | |
1824 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
1825 // just made a call site that could be megamorphic into a monomorphic site | |
1826 // for the rest of its life! Just another racing bug in the life of | |
1827 // fixup_callers_callsite ... | |
1828 // | |
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1829 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
0 | 1830 iter.next(); |
1831 assert(iter.has_current(), "must have a reloc at java call site"); | |
1832 relocInfo::relocType typ = iter.reloc()->type(); | |
1833 if ( typ != relocInfo::static_call_type && | |
1834 typ != relocInfo::opt_virtual_call_type && | |
1835 typ != relocInfo::static_stub_type) { | |
1836 return; | |
1837 } | |
1838 address destination = call->destination(); | |
1839 if (destination != entry_point) { | |
1840 CodeBlob* callee = CodeCache::find_blob(destination); | |
1841 // callee == cb seems weird. It means calling interpreter thru stub. | |
1842 if (callee == cb || callee->is_adapter_blob()) { | |
1843 // static call or optimized virtual | |
1844 if (TraceCallFixup) { | |
1204 | 1845 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1846 moop->print_short_name(tty); |
1847 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1848 } | |
1849 call->set_destination_mt_safe(entry_point); | |
1850 } else { | |
1851 if (TraceCallFixup) { | |
1852 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
1853 moop->print_short_name(tty); | |
1854 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1855 } | |
1856 // assert is too strong could also be resolve destinations. | |
1857 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
1858 } | |
1859 } else { | |
1860 if (TraceCallFixup) { | |
1204 | 1861 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1862 moop->print_short_name(tty); |
1863 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1864 } | |
1865 } | |
1866 } | |
1867 } | |
1868 IRT_END | |
1869 | |
1870 | |
1871 // same as JVM_Arraycopy, but called directly from compiled code | |
1872 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
1873 oopDesc* dest, jint dest_pos, | |
1874 jint length, | |
1875 JavaThread* thread)) { | |
1876 #ifndef PRODUCT | |
1877 _slow_array_copy_ctr++; | |
1878 #endif | |
1879 // Check if we have null pointers | |
1880 if (src == NULL || dest == NULL) { | |
1881 THROW(vmSymbols::java_lang_NullPointerException()); | |
1882 } | |
1883 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
1884 // even though the copy_array API also performs dynamic checks to ensure | |
1885 // that src and dest are truly arrays (and are conformable). | |
1886 // The copy_array mechanism is awkward and could be removed, but | |
1887 // the compilers don't call this function except as a last resort, | |
1888 // so it probably doesn't matter. | |
6983 | 1889 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
0 | 1890 (arrayOopDesc*)dest, dest_pos, |
1891 length, thread); | |
1892 } | |
1893 JRT_END | |
1894 | |
1895 char* SharedRuntime::generate_class_cast_message( | |
1896 JavaThread* thread, const char* objName) { | |
1897 | |
1898 // Get target class name from the checkcast instruction | |
1899 vframeStream vfst(thread, true); | |
1900 assert(!vfst.at_end(), "Java frame must exist"); | |
2142 | 1901 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
6983 | 1902 Klass* targetKlass = vfst.method()->constants()->klass_at( |
1903 cc.index(), thread); | |
0 | 1904 return generate_class_cast_message(objName, targetKlass->external_name()); |
1905 } | |
1906 | |
1907 char* SharedRuntime::generate_class_cast_message( | |
710 | 1908 const char* objName, const char* targetKlassName, const char* desc) { |
0 | 1909 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
1910 | |
53 | 1911 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 1912 if (NULL == message) { |
53 | 1913 // Shouldn't happen, but don't cause even more problems if it does |
0 | 1914 message = const_cast<char*>(objName); |
1915 } else { | |
1916 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
1917 } | |
1918 return message; | |
1919 } | |
1920 | |
1921 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
1922 (void) JavaThread::current()->reguard_stack(); | |
1923 JRT_END | |
1924 | |
1925 | |
1926 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
1927 #ifndef PRODUCT | |
1928 int SharedRuntime::_monitor_enter_ctr=0; | |
1929 #endif | |
1930 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
1931 oop obj(_obj); | |
1932 #ifndef PRODUCT | |
1933 _monitor_enter_ctr++; // monitor enter slow | |
1934 #endif | |
1935 if (PrintBiasedLockingStatistics) { | |
1936 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
1937 } | |
1938 Handle h_obj(THREAD, obj); | |
1939 if (UseBiasedLocking) { | |
1940 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
1941 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
1942 } else { | |
1943 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
1944 } | |
1945 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
1946 JRT_END | |
1947 | |
1948 #ifndef PRODUCT | |
1949 int SharedRuntime::_monitor_exit_ctr=0; | |
1950 #endif | |
1951 // Handles the uncommon cases of monitor unlocking in compiled code | |
1952 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
1953 oop obj(_obj); | |
1954 #ifndef PRODUCT | |
1955 _monitor_exit_ctr++; // monitor exit slow | |
1956 #endif | |
1957 Thread* THREAD = JavaThread::current(); | |
1958 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
1959 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
1960 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
1961 #undef MIGHT_HAVE_PENDING | |
1962 #ifdef MIGHT_HAVE_PENDING | |
1963 // Save and restore any pending_exception around the exception mark. | |
1964 // While the slow_exit must not throw an exception, we could come into | |
1965 // this routine with one set. | |
1966 oop pending_excep = NULL; | |
1967 const char* pending_file; | |
1968 int pending_line; | |
1969 if (HAS_PENDING_EXCEPTION) { | |
1970 pending_excep = PENDING_EXCEPTION; | |
1971 pending_file = THREAD->exception_file(); | |
1972 pending_line = THREAD->exception_line(); | |
1973 CLEAR_PENDING_EXCEPTION; | |
1974 } | |
1975 #endif /* MIGHT_HAVE_PENDING */ | |
1976 | |
1977 { | |
1978 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
1979 EXCEPTION_MARK; | |
1980 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
1981 } | |
1982 | |
1983 #ifdef MIGHT_HAVE_PENDING | |
1984 if (pending_excep != NULL) { | |
1985 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
1986 } | |
1987 #endif /* MIGHT_HAVE_PENDING */ | |
1988 JRT_END | |
1989 | |
1990 #ifndef PRODUCT | |
1991 | |
1992 void SharedRuntime::print_statistics() { | |
1993 ttyLocker ttyl; | |
1994 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
1995 | |
1996 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
1997 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
1998 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
1999 | |
2000 SharedRuntime::print_ic_miss_histogram(); | |
2001 | |
2002 if (CountRemovableExceptions) { | |
2003 if (_nof_removable_exceptions > 0) { | |
2004 Unimplemented(); // this counter is not yet incremented | |
2005 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
2006 } | |
2007 } | |
2008 | |
2009 // Dump the JRT_ENTRY counters | |
2010 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
2011 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
2012 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
2013 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
2014 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
2015 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
2016 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
2017 | |
2018 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
2019 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
2020 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
2021 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
2022 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
2023 | |
2024 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
2025 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
2026 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
2027 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
2028 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
2029 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
2030 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
2031 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
2032 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
2033 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
2034 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
2035 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
2036 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
2037 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
2038 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
2039 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
2040 | |
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2041 AdapterHandlerLibrary::print_statistics(); |
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0 | 2043 if (xtty != NULL) xtty->tail("statistics"); |
2044 } | |
2045 | |
2046 inline double percent(int x, int y) { | |
2047 return 100.0 * x / MAX2(y, 1); | |
2048 } | |
2049 | |
2050 class MethodArityHistogram { | |
2051 public: | |
2052 enum { MAX_ARITY = 256 }; | |
2053 private: | |
2054 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
2055 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
2056 static int _max_arity; // max. arity seen | |
2057 static int _max_size; // max. arg size seen | |
2058 | |
2059 static void add_method_to_histogram(nmethod* nm) { | |
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2060 Method* m = nm->method(); |
0 | 2061 ArgumentCount args(m->signature()); |
2062 int arity = args.size() + (m->is_static() ? 0 : 1); | |
2063 int argsize = m->size_of_parameters(); | |
2064 arity = MIN2(arity, MAX_ARITY-1); | |
2065 argsize = MIN2(argsize, MAX_ARITY-1); | |
2066 int count = nm->method()->compiled_invocation_count(); | |
2067 _arity_histogram[arity] += count; | |
2068 _size_histogram[argsize] += count; | |
2069 _max_arity = MAX2(_max_arity, arity); | |
2070 _max_size = MAX2(_max_size, argsize); | |
2071 } | |
2072 | |
2073 void print_histogram_helper(int n, int* histo, const char* name) { | |
2074 const int N = MIN2(5, n); | |
2075 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2076 double sum = 0; | |
2077 double weighted_sum = 0; | |
2078 int i; | |
2079 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
2080 double rest = sum; | |
2081 double percent = sum / 100; | |
2082 for (i = 0; i <= N; i++) { | |
2083 rest -= histo[i]; | |
2084 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
2085 } | |
2086 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
2087 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
2088 } | |
2089 | |
2090 void print_histogram() { | |
2091 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2092 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
2093 tty->print_cr("\nSame for parameter size (in words):"); | |
2094 print_histogram_helper(_max_size, _size_histogram, "size"); | |
2095 tty->cr(); | |
2096 } | |
2097 | |
2098 public: | |
2099 MethodArityHistogram() { | |
2100 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
2101 _max_arity = _max_size = 0; | |
2102 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
2103 CodeCache::nmethods_do(add_method_to_histogram); | |
2104 print_histogram(); | |
2105 } | |
2106 }; | |
2107 | |
2108 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
2109 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
2110 int MethodArityHistogram::_max_arity; | |
2111 int MethodArityHistogram::_max_size; | |
2112 | |
2113 void SharedRuntime::print_call_statistics(int comp_total) { | |
2114 tty->print_cr("Calls from compiled code:"); | |
2115 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
2116 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
2117 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
2118 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
2119 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
2120 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
2121 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
2122 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
2123 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
2124 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
2125 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
2126 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
2127 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
2128 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
2129 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
2130 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
2131 tty->cr(); | |
2132 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
2133 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
2134 tty->print_cr(" %% in nested categories are relative to their category"); | |
2135 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
2136 tty->cr(); | |
2137 | |
2138 MethodArityHistogram h; | |
2139 } | |
2140 #endif | |
2141 | |
2142 | |
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2143 // A simple wrapper class around the calling convention information |
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2144 // that allows sharing of adapters for the same calling convention. |
6197 | 2145 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2146 private: |
6266
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2147 enum { |
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2148 _basic_type_bits = 4, |
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2149 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2150 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2151 _compact_int_count = 3 |
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2152 }; |
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2153 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2154 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2155 |
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2156 union { |
6266
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2157 int _compact[_compact_int_count]; |
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2158 int* _fingerprint; |
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2159 } _value; |
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2160 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2161 // Otherwise _value._fingerprint is the array. |
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2162 |
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2163 // Remap BasicTypes that are handled equivalently by the adapters. |
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2164 // These are correct for the current system but someday it might be |
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2165 // necessary to make this mapping platform dependent. |
6266
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2166 static int adapter_encoding(BasicType in) { |
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2167 switch(in) { |
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2168 case T_BOOLEAN: |
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|
2169 case T_BYTE: |
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2170 case T_SHORT: |
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|
2171 case T_CHAR: |
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|
2172 // There are all promoted to T_INT in the calling convention |
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|
2173 return T_INT; |
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|
2174 |
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2175 case T_OBJECT: |
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|
2176 case T_ARRAY: |
6266
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2177 // In other words, we assume that any register good enough for |
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2178 // an int or long is good enough for a managed pointer. |
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2179 #ifdef _LP64 |
1506 | 2180 return T_LONG; |
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2181 #else |
1506 | 2182 return T_INT; |
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|
2183 #endif |
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|
2184 |
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2185 case T_INT: |
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|
2186 case T_LONG: |
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|
2187 case T_FLOAT: |
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|
2188 case T_DOUBLE: |
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|
2189 case T_VOID: |
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|
2190 return in; |
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|
2191 |
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|
2192 default: |
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|
2193 ShouldNotReachHere(); |
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|
2194 return T_CONFLICT; |
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|
2195 } |
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|
2196 } |
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|
2197 |
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|
2198 public: |
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|
2199 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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|
2200 // The fingerprint is based on the BasicType signature encoded |
3841
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|
2201 // into an array of ints with eight entries per int. |
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|
2202 int* ptr; |
6266
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|
2203 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2204 if (len <= _compact_int_count) { |
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2205 assert(_compact_int_count == 3, "else change next line"); |
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2206 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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|
2207 // Storing the signature encoded as signed chars hits about 98% |
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|
2208 // of the time. |
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|
2209 _length = -len; |
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|
2210 ptr = _value._compact; |
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|
2211 } else { |
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|
2212 _length = len; |
6197 | 2213 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
1207
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|
2214 ptr = _value._fingerprint; |
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|
2215 } |
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|
2216 |
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|
2217 // Now pack the BasicTypes with 8 per int |
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|
2218 int sig_index = 0; |
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|
2219 for (int index = 0; index < len; index++) { |
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|
2220 int value = 0; |
6266
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|
2221 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
1d7922586cf6
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|
2222 int bt = ((sig_index < total_args_passed) |
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|
2223 ? adapter_encoding(sig_bt[sig_index++]) |
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|
2224 : 0); |
1d7922586cf6
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|
2225 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
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|
2226 value = (value << _basic_type_bits) | bt; |
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|
2227 } |
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|
2228 ptr[index] = value; |
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|
2229 } |
1187
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|
2230 } |
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|
2231 |
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|
2232 ~AdapterFingerPrint() { |
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|
2233 if (_length > 0) { |
6197 | 2234 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
1187
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|
2235 } |
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|
2236 } |
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|
2237 |
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|
2238 int value(int index) { |
1187
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|
2239 if (_length < 0) { |
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|
2240 return _value._compact[index]; |
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|
2241 } |
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|
2242 return _value._fingerprint[index]; |
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|
2243 } |
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|
2244 int length() { |
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|
2245 if (_length < 0) return -_length; |
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|
2246 return _length; |
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|
2247 } |
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|
2248 |
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|
2249 bool is_compact() { |
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|
2250 return _length <= 0; |
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|
2251 } |
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|
2252 |
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|
2253 unsigned int compute_hash() { |
1207
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|
2254 int hash = 0; |
1187
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|
2255 for (int i = 0; i < length(); i++) { |
1207
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|
2256 int v = value(i); |
1187
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|
2257 hash = (hash << 8) ^ v ^ (hash >> 5); |
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|
2258 } |
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|
2259 return (unsigned int)hash; |
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|
2260 } |
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|
2261 |
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|
2262 const char* as_string() { |
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|
2263 stringStream st; |
3841
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|
2264 st.print("0x"); |
1187
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|
2265 for (int i = 0; i < length(); i++) { |
3841
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|
2266 st.print("%08x", value(i)); |
1187
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|
2267 } |
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parents:
1142
diff
changeset
|
2268 return st.as_string(); |
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6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2269 } |
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6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2270 |
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1142
diff
changeset
|
2271 bool equals(AdapterFingerPrint* other) { |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2272 if (other->_length != _length) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
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|
2273 return false; |
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never
parents:
1142
diff
changeset
|
2274 } |
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never
parents:
1142
diff
changeset
|
2275 if (_length < 0) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2276 assert(_compact_int_count == 3, "else change next line"); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
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|
2277 return _value._compact[0] == other->_value._compact[0] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
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|
2278 _value._compact[1] == other->_value._compact[1] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
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|
2279 _value._compact[2] == other->_value._compact[2]; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2280 } else { |
cf0685d550f1
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1142
diff
changeset
|
2281 for (int i = 0; i < _length; i++) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2282 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
|
2283 return false; |
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never
parents:
1142
diff
changeset
|
2284 } |
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never
parents:
1142
diff
changeset
|
2285 } |
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6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2286 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2287 return true; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2288 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2289 }; |
cf0685d550f1
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diff
changeset
|
2290 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2291 |
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|
2292 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
6197 | 2293 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
1187
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1142
diff
changeset
|
2294 friend class AdapterHandlerTableIterator; |
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1142
diff
changeset
|
2295 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2296 private: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2297 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2298 #ifndef PRODUCT |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2299 static int _lookups; // number of calls to lookup |
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6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2300 static int _buckets; // number of buckets checked |
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2301 static int _equals; // number of buckets checked with matching hash |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2302 static int _hits; // number of successful lookups |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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|
2303 static int _compact; // number of equals calls with compact signature |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2304 #endif |
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2305 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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changeset
|
2306 AdapterHandlerEntry* bucket(int i) { |
6197 | 2307 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
1187
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parents:
1142
diff
changeset
|
2308 } |
cf0685d550f1
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parents:
1142
diff
changeset
|
2309 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2310 public: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2311 AdapterHandlerTable() |
6197 | 2312 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2313 |
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6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2314 // 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
|
2315 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
6197 | 2316 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2317 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
cf0685d550f1
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1142
diff
changeset
|
2318 return entry; |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2319 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2320 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2321 // Insert an entry into the table |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2322 void add(AdapterHandlerEntry* entry) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2323 int index = hash_to_index(entry->hash()); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2324 add_entry(index, entry); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2325 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2326 |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2327 void free_entry(AdapterHandlerEntry* entry) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2328 entry->deallocate(); |
6197 | 2329 BasicHashtable<mtCode>::free_entry(entry); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2330 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2331 |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2332 // Find a entry with the same fingerprint if it exists |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2333 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2334 NOT_PRODUCT(_lookups++); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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1205
diff
changeset
|
2335 AdapterFingerPrint fp(total_args_passed, sig_bt); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2336 unsigned int hash = fp.compute_hash(); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2337 int index = hash_to_index(hash); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2338 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2339 NOT_PRODUCT(_buckets++); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2340 if (e->hash() == hash) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2341 NOT_PRODUCT(_equals++); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2342 if (fp.equals(e->fingerprint())) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2343 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2344 if (fp.is_compact()) _compact++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2345 _hits++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2346 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2347 return e; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2348 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2349 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2350 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2351 return NULL; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2352 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2353 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2354 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2355 void print_statistics() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2356 ResourceMark rm; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2357 int longest = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2358 int empty = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2359 int total = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2360 int nonempty = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2361 for (int index = 0; index < table_size(); index++) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2362 int count = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2363 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2364 count++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2365 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2366 if (count != 0) nonempty++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2367 if (count == 0) empty++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2368 if (count > longest) longest = count; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2369 total += count; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2370 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2371 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2372 empty, longest, total, total / (double)nonempty); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2373 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2374 _lookups, _buckets, _equals, _hits, _compact); |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2375 } |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2376 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2377 }; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2378 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2379 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2380 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2381 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2382 int AdapterHandlerTable::_lookups; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2383 int AdapterHandlerTable::_buckets; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2384 int AdapterHandlerTable::_equals; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2385 int AdapterHandlerTable::_hits; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2386 int AdapterHandlerTable::_compact; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2387 |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2388 #endif |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2389 |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2390 class AdapterHandlerTableIterator : public StackObj { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2391 private: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2392 AdapterHandlerTable* _table; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2393 int _index; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2394 AdapterHandlerEntry* _current; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2395 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2396 void scan() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2397 while (_index < _table->table_size()) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2398 AdapterHandlerEntry* a = _table->bucket(_index); |
1564 | 2399 _index++; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2400 if (a != NULL) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2401 _current = a; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2402 return; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2403 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2404 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2405 } |
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2406 |
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|
2407 public: |
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2408 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
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|
2409 scan(); |
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|
2410 } |
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|
2411 bool has_next() { |
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|
2412 return _current != NULL; |
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|
2413 } |
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|
2414 AdapterHandlerEntry* next() { |
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2415 if (_current != NULL) { |
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2416 AdapterHandlerEntry* result = _current; |
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2417 _current = _current->next(); |
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2418 if (_current == NULL) scan(); |
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2419 return result; |
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2420 } else { |
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2421 return NULL; |
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|
2422 } |
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|
2423 } |
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|
2424 }; |
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2425 |
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2426 |
0 | 2427 // --------------------------------------------------------------------------- |
2428 // Implementation of AdapterHandlerLibrary | |
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2429 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
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2430 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
0 | 2431 const int AdapterHandlerLibrary_size = 16*K; |
742
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2432 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
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2433 |
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2434 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
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2435 // Should be called only when AdapterHandlerLibrary_lock is active. |
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2436 if (_buffer == NULL) // Initialize lazily |
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2437 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2438 return _buffer; |
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2439 } |
0 | 2440 |
2441 void AdapterHandlerLibrary::initialize() { | |
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2442 if (_adapters != NULL) return; |
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2443 _adapters = new AdapterHandlerTable(); |
0 | 2444 |
2445 // Create a special handler for abstract methods. Abstract methods | |
2446 // are never compiled so an i2c entry is somewhat meaningless, but | |
13382
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2447 // throw AbstractMethodError just in case. |
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2448 // Pass wrong_method_abstract for the c2i transitions to return |
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2449 // AbstractMethodError for invalid invocations. |
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2450 address wrong_method_abstract = SharedRuntime::get_handle_wrong_method_abstract_stub(); |
1187
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2451 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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2452 StubRoutines::throw_AbstractMethodError_entry(), |
13382
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2453 wrong_method_abstract, wrong_method_abstract); |
0 | 2454 } |
2455 | |
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2456 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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2457 address i2c_entry, |
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2458 address c2i_entry, |
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2459 address c2i_unverified_entry) { |
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2460 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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2461 } |
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2462 |
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2463 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2464 // Use customized signature handler. Need to lock around updates to |
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2465 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2466 // and a single writer: this could be fixed if it becomes a |
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2467 // problem). |
0 | 2468 |
2469 // Get the address of the ic_miss handlers before we grab the | |
2470 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
2471 // was caused by the initialization of the stubs happening | |
2472 // while we held the lock and then notifying jvmti while | |
2473 // holding it. This just forces the initialization to be a little | |
2474 // earlier. | |
2475 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
2476 assert(ic_miss != NULL, "must have handler"); | |
2477 | |
1187
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|
2478 ResourceMark rm; |
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|
2479 |
1748 | 2480 NOT_PRODUCT(int insts_size); |
17611 | 2481 AdapterBlob* new_adapter = NULL; |
742
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2482 AdapterHandlerEntry* entry = NULL; |
1187
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|
2483 AdapterFingerPrint* fingerprint = NULL; |
0 | 2484 { |
2485 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2486 // make sure data structure is initialized | |
2487 initialize(); | |
2488 | |
2489 if (method->is_abstract()) { | |
1187
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|
2490 return _abstract_method_handler; |
0 | 2491 } |
2492 | |
1187
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2493 // Fill in the signature array, for the calling-convention call. |
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2494 int total_args_passed = method->size_of_parameters(); // All args on stack |
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|
2495 |
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|
2496 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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|
2497 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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|
2498 int i = 0; |
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|
2499 if (!method->is_static()) // Pass in receiver first |
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|
2500 sig_bt[i++] = T_OBJECT; |
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|
2501 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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|
2502 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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|
2503 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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|
2504 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2505 } |
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|
2506 assert(i == total_args_passed, ""); |
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|
2507 |
1207
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|
2508 // Lookup method signature's fingerprint |
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|
2509 entry = _adapters->lookup(total_args_passed, sig_bt); |
1187
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|
2510 |
1207
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|
2511 #ifdef ASSERT |
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|
2512 AdapterHandlerEntry* shared_entry = NULL; |
17611 | 2513 // Start adapter sharing verification only after the VM is booted. |
2514 if (VerifyAdapterSharing && (entry != NULL)) { | |
1207
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|
2515 shared_entry = entry; |
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|
2516 entry = NULL; |
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|
2517 } |
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|
2518 #endif |
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|
2519 |
1187
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|
2520 if (entry != NULL) { |
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|
2521 return entry; |
0 | 2522 } |
2523 | |
1207
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|
2524 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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|
2525 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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|
2526 |
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|
2527 // Make a C heap allocated version of the fingerprint to store in the adapter |
1207
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|
2528 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
1187
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|
2529 |
17611 | 2530 // StubRoutines::code2() is initialized after this function can be called. As a result, |
2531 // VerifyAdapterCalls and VerifyAdapterSharing can fail if we re-use code that generated | |
2532 // prior to StubRoutines::code2() being set. Checks refer to checks generated in an I2C | |
2533 // stub that ensure that an I2C stub is called from an interpreter frame. | |
2534 bool contains_all_checks = StubRoutines::code2() != NULL; | |
2535 | |
0 | 2536 // Create I2C & C2I handlers |
1299
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|
2537 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
742
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2538 if (buf != NULL) { |
1748 | 2539 CodeBuffer buffer(buf); |
742
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|
2540 short buffer_locs[20]; |
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2541 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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2542 sizeof(buffer_locs)/sizeof(relocInfo)); |
17611 | 2543 |
742
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2544 MacroAssembler _masm(&buffer); |
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|
2545 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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2546 total_args_passed, |
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|
2547 comp_args_on_stack, |
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|
2548 sig_bt, |
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|
2549 regs, |
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|
2550 fingerprint); |
1207
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|
2551 #ifdef ASSERT |
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|
2552 if (VerifyAdapterSharing) { |
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|
2553 if (shared_entry != NULL) { |
17611 | 2554 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size()), "code must match"); |
1207
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|
2555 // Release the one just created and return the original |
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|
2556 _adapters->free_entry(entry); |
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|
2557 return shared_entry; |
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|
2558 } else { |
17611 | 2559 entry->save_code(buf->code_begin(), buffer.insts_size()); |
1207
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|
2560 } |
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|
2561 } |
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|
2562 #endif |
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|
2563 |
17611 | 2564 new_adapter = AdapterBlob::create(&buffer); |
1748 | 2565 NOT_PRODUCT(insts_size = buffer.insts_size()); |
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2566 } |
17611 | 2567 if (new_adapter == NULL) { |
28 | 2568 // CodeCache is full, disable compilation |
2569 // Ought to log this but compile log is only per compile thread | |
2570 // and we're some non descript Java thread. | |
1202 | 2571 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
2572 CompileBroker::handle_full_code_cache(); | |
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2573 return NULL; // Out of CodeCache space |
28 | 2574 } |
17611 | 2575 entry->relocate(new_adapter->content_begin()); |
0 | 2576 #ifndef PRODUCT |
2577 // debugging suppport | |
6266
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2578 if (PrintAdapterHandlers || PrintStubCode) { |
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2579 ttyLocker ttyl; |
6266
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2580 entry->print_adapter_on(tty); |
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2581 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
1187
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2582 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
6266
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2583 method->signature()->as_C_string(), insts_size); |
0 | 2584 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
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2585 if (Verbose || PrintStubCode) { |
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2586 address first_pc = entry->base_address(); |
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2587 if (first_pc != NULL) { |
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2588 Disassembler::decode(first_pc, first_pc + insts_size); |
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2589 tty->cr(); |
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2590 } |
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2591 } |
0 | 2592 } |
2593 #endif | |
17611 | 2594 // Add the entry only if the entry contains all required checks (see sharedRuntime_xxx.cpp) |
2595 // The checks are inserted only if -XX:+VerifyAdapterCalls is specified. | |
2596 if (contains_all_checks || !VerifyAdapterCalls) { | |
2597 _adapters->add(entry); | |
2598 } | |
0 | 2599 } |
2600 // Outside of the lock | |
17611 | 2601 if (new_adapter != NULL) { |
0 | 2602 char blob_id[256]; |
2603 jio_snprintf(blob_id, | |
2604 sizeof(blob_id), | |
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2605 "%s(%s)@" PTR_FORMAT, |
17611 | 2606 new_adapter->name(), |
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|
2607 fingerprint->as_string(), |
17611 | 2608 new_adapter->content_begin()); |
2609 Forte::register_stub(blob_id, new_adapter->content_begin(),new_adapter->content_end()); | |
0 | 2610 |
2611 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
17611 | 2612 JvmtiExport::post_dynamic_code_generated(blob_id, new_adapter->content_begin(), new_adapter->content_end()); |
0 | 2613 } |
2614 } | |
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2615 return entry; |
0 | 2616 } |
2617 | |
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2618 address AdapterHandlerEntry::base_address() { |
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2619 address base = _i2c_entry; |
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2620 if (base == NULL) base = _c2i_entry; |
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2621 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
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2622 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
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2623 return base; |
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|
2624 } |
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2625 |
0 | 2626 void AdapterHandlerEntry::relocate(address new_base) { |
6266
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2627 address old_base = base_address(); |
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2628 assert(old_base != NULL, ""); |
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2629 ptrdiff_t delta = new_base - old_base; |
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2630 if (_i2c_entry != NULL) |
0 | 2631 _i2c_entry += delta; |
6266
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2632 if (_c2i_entry != NULL) |
0 | 2633 _c2i_entry += delta; |
6266
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2634 if (_c2i_unverified_entry != NULL) |
0 | 2635 _c2i_unverified_entry += delta; |
6266
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2636 assert(base_address() == new_base, ""); |
0 | 2637 } |
2638 | |
1207
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|
2639 |
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|
2640 void AdapterHandlerEntry::deallocate() { |
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|
2641 delete _fingerprint; |
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|
2642 #ifdef ASSERT |
6197 | 2643 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
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|
2644 #endif |
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|
2645 } |
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|
2646 |
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|
2647 |
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|
2648 #ifdef ASSERT |
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|
2649 // Capture the code before relocation so that it can be compared |
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|
2650 // against other versions. If the code is captured after relocation |
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|
2651 // then relative instructions won't be equivalent. |
17611 | 2652 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length) { |
6197 | 2653 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
17611 | 2654 _saved_code_length = length; |
1207
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|
2655 memcpy(_saved_code, buffer, length); |
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|
2656 } |
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|
2657 |
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|
2658 |
17611 | 2659 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length) { |
2660 if (length != _saved_code_length) { | |
1207
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|
2661 return false; |
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|
2662 } |
17611 | 2663 |
2664 return (memcmp(buffer, _saved_code, length) == 0) ? true : false; | |
1207
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|
2665 } |
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|
2666 #endif |
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|
2667 |
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|
2668 |
17625 | 2669 /** |
2670 * Create a native wrapper for this native method. The wrapper converts the | |
2671 * Java-compiled calling convention to the native convention, handles | |
2672 * arguments, and transitions to native. On return from the native we transition | |
2673 * back to java blocking if a safepoint is in progress. | |
2674 */ | |
2675 void AdapterHandlerLibrary::create_native_wrapper(methodHandle method) { | |
0 | 2676 ResourceMark rm; |
2677 nmethod* nm = NULL; | |
2678 | |
6266
1d7922586cf6
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2679 assert(method->is_native(), "must be native"); |
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2680 assert(method->is_method_handle_intrinsic() || |
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|
2681 method->has_native_function(), "must have something valid to call!"); |
0 | 2682 |
2683 { | |
17625 | 2684 // Perform the work while holding the lock, but perform any printing outside the lock |
0 | 2685 MutexLocker mu(AdapterHandlerLibrary_lock); |
2686 // See if somebody beat us to it | |
2687 nm = method->code(); | |
17625 | 2688 if (nm != NULL) { |
2689 return; | |
0 | 2690 } |
2691 | |
17625 | 2692 const int compile_id = CompileBroker::assign_compile_id(method, CompileBroker::standard_entry_bci); |
2693 assert(compile_id > 0, "Must generate native wrapper"); | |
2694 | |
2695 | |
742
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|
2696 ResourceMark rm; |
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|
2697 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
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|
2698 if (buf != NULL) { |
1748 | 2699 CodeBuffer buffer(buf); |
742
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|
2700 double locs_buf[20]; |
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|
2701 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
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|
2702 MacroAssembler _masm(&buffer); |
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|
2703 |
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|
2704 // Fill in the signature array, for the calling-convention call. |
6790
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|
2705 const int total_args_passed = method->size_of_parameters(); |
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|
2706 |
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|
2707 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2708 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
742
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|
2709 int i=0; |
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|
2710 if( !method->is_static() ) // Pass in receiver first |
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|
2711 sig_bt[i++] = T_OBJECT; |
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|
2712 SignatureStream ss(method->signature()); |
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|
2713 for( ; !ss.at_return_type(); ss.next()) { |
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2714 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2715 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
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2716 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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2717 } |
6790
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2718 assert(i == total_args_passed, ""); |
742
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|
2719 BasicType ret_type = ss.type(); |
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|
2720 |
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|
2721 // Now get the compiled-Java layout as input (or output) arguments. |
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2722 // NOTE: Stubs for compiled entry points of method handle intrinsics |
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2723 // are just trampolines so the argument registers must be outgoing ones. |
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|
2724 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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|
2725 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
742
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|
2726 |
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|
2727 // Generate the compiled-to-native wrapper code |
17625 | 2728 nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type); |
2729 | |
2730 if (nm != NULL) { | |
2731 method->set_code(method, nm); | |
2732 } | |
0 | 2733 } |
17625 | 2734 } // Unlock AdapterHandlerLibrary_lock |
2735 | |
1728
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|
2736 |
0 | 2737 // Install the generated code. |
2738 if (nm != NULL) { | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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diff
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|
2739 if (PrintCompilation) { |
3d58a4983660
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|
2740 ttyLocker ttyl; |
3d58a4983660
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|
2741 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
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|
2742 } |
0 | 2743 nm->post_compiled_method_load_event(); |
2744 } else { | |
2745 // CodeCache is full, disable compilation | |
1202 | 2746 CompileBroker::handle_full_code_cache(); |
0 | 2747 } |
2748 } | |
2749 | |
4873
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|
2750 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
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|
2751 assert(thread == JavaThread::current(), "must be"); |
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|
2752 // The code is about to enter a JNI lazy critical native method and |
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diff
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|
2753 // _needs_gc is true, so if this thread is already in a critical |
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parents:
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|
2754 // section then just return, otherwise this thread should block |
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|
2755 // until needs_gc has been cleared. |
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diff
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|
2756 if (thread->in_critical()) { |
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parents:
4872
diff
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|
2757 return; |
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diff
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|
2758 } |
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diff
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|
2759 // Lock and unlock a critical section to give the system a chance to block |
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parents:
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diff
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|
2760 GC_locker::lock_critical(thread); |
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parents:
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diff
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|
2761 GC_locker::unlock_critical(thread); |
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parents:
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diff
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|
2762 JRT_END |
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|
2763 |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2764 #ifdef HAVE_DTRACE_H |
17915
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2765 /** |
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2766 * Create a dtrace nmethod for this method. The wrapper converts the |
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2767 * Java-compiled calling convention to the native convention, makes a dummy call |
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2768 * (actually nops for the size of the call instruction, which become a trap if |
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2769 * probe is enabled), and finally returns to the caller. Since this all looks like a |
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2770 * leaf, no thread transition is needed. |
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2771 */ |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2772 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2773 ResourceMark rm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2774 nmethod* nm = NULL; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2775 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2776 if (PrintCompilation) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2777 ttyLocker ttyl; |
17915
e0a77b91da68
8040085: dtrace/jsdt tests crash on solaris. found an unadvertised bad scavengable oop in the code cache
anoll
parents:
17884
diff
changeset
|
2778 tty->print("--- n "); |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2779 method->print_short_name(tty); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2780 if (method->is_static()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2781 tty->print(" (static)"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2782 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2783 tty->cr(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2784 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2785 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2786 { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2787 // perform the work while holding the lock, but perform any printing |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2788 // outside the lock |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2789 MutexLocker mu(AdapterHandlerLibrary_lock); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2790 // See if somebody beat us to it |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2791 nm = method->code(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2792 if (nm) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2793 return nm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2794 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2795 |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2796 ResourceMark rm; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2797 |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2798 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2799 if (buf != NULL) { |
1748 | 2800 CodeBuffer buffer(buf); |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2801 // Need a few relocation entries |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2802 double locs_buf[20]; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2803 buffer.insts()->initialize_shared_locs( |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2804 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2805 MacroAssembler _masm(&buffer); |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2806 |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2807 // Generate the compiled-to-native wrapper code |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2808 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2809 } |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2810 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2811 return nm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2812 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2813 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2814 // the dtrace method needs to convert java lang string to utf8 string. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2815 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2816 typeArrayOop jlsValue = java_lang_String::value(src); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2817 int jlsOffset = java_lang_String::offset(src); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2818 int jlsLen = java_lang_String::length(src); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2819 jchar* jlsPos = (jlsLen == 0) ? NULL : |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2820 jlsValue->char_at_addr(jlsOffset); |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6796
diff
changeset
|
2821 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2822 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2823 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2824 #endif // ndef HAVE_DTRACE_H |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2825 |
14418
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2826 int SharedRuntime::convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2827 int argcnt = in_args_count; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2828 if (CCallingConventionRequiresIntsAsLongs) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2829 for (int in = 0; in < in_args_count; in++) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2830 BasicType bt = in_sig_bt[in]; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2831 switch (bt) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2832 case T_BOOLEAN: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2833 case T_CHAR: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2834 case T_BYTE: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2835 case T_SHORT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2836 case T_INT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2837 argcnt++; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2838 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2839 default: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2840 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2841 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2842 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2843 } else { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2844 assert(0, "This should not be needed on this platform"); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2845 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2846 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2847 return argcnt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2848 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2849 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2850 void SharedRuntime::convert_ints_to_longints(int i2l_argcnt, int& in_args_count, |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2851 BasicType*& in_sig_bt, VMRegPair*& in_regs) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2852 if (CCallingConventionRequiresIntsAsLongs) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2853 VMRegPair *new_in_regs = NEW_RESOURCE_ARRAY(VMRegPair, i2l_argcnt); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2854 BasicType *new_in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, i2l_argcnt); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2855 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2856 int argcnt = 0; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2857 for (int in = 0; in < in_args_count; in++, argcnt++) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2858 BasicType bt = in_sig_bt[in]; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2859 VMRegPair reg = in_regs[in]; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2860 switch (bt) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2861 case T_BOOLEAN: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2862 case T_CHAR: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2863 case T_BYTE: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2864 case T_SHORT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2865 case T_INT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2866 // Convert (bt) to (T_LONG,bt). |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2867 new_in_sig_bt[argcnt ] = T_LONG; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2868 new_in_sig_bt[argcnt+1] = bt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2869 assert(reg.first()->is_valid() && !reg.second()->is_valid(), ""); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2870 new_in_regs[argcnt ].set2(reg.first()); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2871 new_in_regs[argcnt+1].set_bad(); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2872 argcnt++; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2873 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2874 default: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2875 // No conversion needed. |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2876 new_in_sig_bt[argcnt] = bt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2877 new_in_regs[argcnt] = reg; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2878 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2879 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2880 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2881 assert(argcnt == i2l_argcnt, "must match"); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
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2882 |
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2883 in_regs = new_in_regs; |
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2884 in_sig_bt = new_in_sig_bt; |
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2885 in_args_count = i2l_argcnt; |
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2886 } else { |
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2887 assert(0, "This should not be needed on this platform"); |
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2888 } |
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2889 } |
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2890 |
0 | 2891 // ------------------------------------------------------------------------- |
2892 // Java-Java calling convention | |
2893 // (what you use when Java calls Java) | |
2894 | |
2895 //------------------------------name_for_receiver---------------------------------- | |
2896 // For a given signature, return the VMReg for parameter 0. | |
2897 VMReg SharedRuntime::name_for_receiver() { | |
2898 VMRegPair regs; | |
2899 BasicType sig_bt = T_OBJECT; | |
2900 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
2901 // Return argument 0 register. In the LP64 build pointers | |
2902 // take 2 registers, but the VM wants only the 'main' name. | |
2903 return regs.first(); | |
2904 } | |
2905 | |
10390 | 2906 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
0 | 2907 // This method is returning a data structure allocating as a |
2908 // ResourceObject, so do not put any ResourceMarks in here. | |
2909 char *s = sig->as_C_string(); | |
2910 int len = (int)strlen(s); | |
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2911 s++; len--; // Skip opening paren |
0 | 2912 |
2913 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
2914 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
2915 int cnt = 0; | |
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2916 if (has_receiver) { |
0 | 2917 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
2918 } | |
2919 | |
23954 | 2920 while( *s != ')' ) { // Find closing right paren |
0 | 2921 switch( *s++ ) { // Switch on signature character |
2922 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
2923 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
2924 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
2925 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
2926 case 'I': sig_bt[cnt++] = T_INT; break; | |
2927 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
2928 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
2929 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
2930 case 'V': sig_bt[cnt++] = T_VOID; break; | |
2931 case 'L': // Oop | |
2932 while( *s++ != ';' ) ; // Skip signature | |
2933 sig_bt[cnt++] = T_OBJECT; | |
2934 break; | |
2935 case '[': { // Array | |
2936 do { // Skip optional size | |
2937 while( *s >= '0' && *s <= '9' ) s++; | |
2938 } while( *s++ == '[' ); // Nested arrays? | |
2939 // Skip element type | |
2940 if( s[-1] == 'L' ) | |
2941 while( *s++ != ';' ) ; // Skip signature | |
2942 sig_bt[cnt++] = T_ARRAY; | |
2943 break; | |
2944 } | |
2945 default : ShouldNotReachHere(); | |
2946 } | |
2947 } | |
10390 | 2948 |
2949 if (has_appendix) { | |
2950 sig_bt[cnt++] = T_OBJECT; | |
2951 } | |
2952 | |
0 | 2953 assert( cnt < 256, "grow table size" ); |
2954 | |
2955 int comp_args_on_stack; | |
2956 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
2957 | |
2958 // the calling convention doesn't count out_preserve_stack_slots so | |
2959 // we must add that in to get "true" stack offsets. | |
2960 | |
2961 if (comp_args_on_stack) { | |
2962 for (int i = 0; i < cnt; i++) { | |
2963 VMReg reg1 = regs[i].first(); | |
2964 if( reg1->is_stack()) { | |
2965 // Yuck | |
2966 reg1 = reg1->bias(out_preserve_stack_slots()); | |
2967 } | |
2968 VMReg reg2 = regs[i].second(); | |
2969 if( reg2->is_stack()) { | |
2970 // Yuck | |
2971 reg2 = reg2->bias(out_preserve_stack_slots()); | |
2972 } | |
2973 regs[i].set_pair(reg2, reg1); | |
2974 } | |
2975 } | |
2976 | |
2977 // results | |
2978 *arg_size = cnt; | |
2979 return regs; | |
2980 } | |
2981 | |
2982 // OSR Migration Code | |
2983 // | |
2984 // This code is used convert interpreter frames into compiled frames. It is | |
2985 // called from very start of a compiled OSR nmethod. A temp array is | |
2986 // allocated to hold the interesting bits of the interpreter frame. All | |
2987 // active locks are inflated to allow them to move. The displaced headers and | |
2988 // active interpeter locals are copied into the temp buffer. Then we return | |
2989 // back to the compiled code. The compiled code then pops the current | |
2990 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
2991 // copies the interpreter locals and displaced headers where it wants. | |
2992 // Finally it calls back to free the temp buffer. | |
2993 // | |
2994 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
2995 | |
2996 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
2997 | |
2998 // | |
2999 // This code is dependent on the memory layout of the interpreter local | |
3000 // array and the monitors. On all of our platforms the layout is identical | |
3001 // so this code is shared. If some platform lays the their arrays out | |
3002 // differently then this code could move to platform specific code or | |
3003 // the code here could be modified to copy items one at a time using | |
3004 // frame accessor methods and be platform independent. | |
3005 | |
3006 frame fr = thread->last_frame(); | |
3007 assert( fr.is_interpreted_frame(), "" ); | |
3008 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
3009 | |
3010 // Figure out how many monitors are active. | |
3011 int active_monitor_count = 0; | |
3012 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
3013 kptr < fr.interpreter_frame_monitor_begin(); | |
3014 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
3015 if( kptr->obj() != NULL ) active_monitor_count++; | |
3016 } | |
3017 | |
3018 // QQQ we could place number of active monitors in the array so that compiled code | |
3019 // could double check it. | |
3020 | |
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3021 Method* moop = fr.interpreter_frame_method(); |
0 | 3022 int max_locals = moop->max_locals(); |
3023 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
3024 int buf_size_words = max_locals + active_monitor_count*2; | |
6197 | 3025 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
0 | 3026 |
3027 // Copy the locals. Order is preserved so that loading of longs works. | |
3028 // Since there's no GC I can copy the oops blindly. | |
3029 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
1506 | 3030 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
0 | 3031 (HeapWord*)&buf[0], |
3032 max_locals); | |
3033 | |
3034 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
3035 int i = max_locals; | |
3036 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
3037 kptr2 < fr.interpreter_frame_monitor_begin(); | |
3038 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
3039 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
3040 BasicLock *lock = kptr2->lock(); | |
3041 // Inflate so the displaced header becomes position-independent | |
3042 if (lock->displaced_header()->is_unlocked()) | |
3043 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
3044 // Now the displaced header is free to move | |
3045 buf[i++] = (intptr_t)lock->displaced_header(); | |
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3046 buf[i++] = cast_from_oop<intptr_t>(kptr2->obj()); |
0 | 3047 } |
3048 } | |
3049 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
3050 | |
3051 return buf; | |
3052 JRT_END | |
3053 | |
3054 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
6197 | 3055 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
0 | 3056 JRT_END |
3057 | |
3058 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
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3059 AdapterHandlerTableIterator iter(_adapters); |
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3060 while (iter.has_next()) { |
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3061 AdapterHandlerEntry* a = iter.next(); |
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3062 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
0 | 3063 } |
3064 return false; | |
3065 } | |
3066 | |
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3067 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
1187
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3068 AdapterHandlerTableIterator iter(_adapters); |
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3069 while (iter.has_next()) { |
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3070 AdapterHandlerEntry* a = iter.next(); |
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3071 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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3072 st->print("Adapter for signature: "); |
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3073 a->print_adapter_on(tty); |
0 | 3074 return; |
3075 } | |
3076 } | |
3077 assert(false, "Should have found handler"); | |
3078 } | |
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3079 |
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3080 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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3081 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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3082 (intptr_t) this, fingerprint()->as_string(), |
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3083 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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3084 |
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|
3085 } |
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3086 |
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3087 #ifndef PRODUCT |
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3088 |
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3089 void AdapterHandlerLibrary::print_statistics() { |
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3090 _adapters->print_statistics(); |
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3091 } |
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3092 |
0 | 3093 #endif /* PRODUCT */ |