Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 7090:05ce1defa4f9
Common out some parts of UnsafeLoad/Store in UnsafeAccess
author | Gilles Duboscq <duboscq@ssw.jku.at> |
---|---|
date | Thu, 29 Nov 2012 13:24:08 +0100 |
parents | 2cb439954abf |
children | 1baf7f1e3f23 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/compiledIC.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
32 #include "compiler/compileBroker.hpp" | |
33 #include "compiler/compilerOracle.hpp" | |
34 #include "interpreter/interpreter.hpp" | |
35 #include "interpreter/interpreterRuntime.hpp" | |
36 #include "memory/gcLocker.inline.hpp" | |
37 #include "memory/universe.inline.hpp" | |
38 #include "oops/oop.inline.hpp" | |
39 #include "prims/forte.hpp" | |
40 #include "prims/jvmtiExport.hpp" | |
41 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
42 #include "prims/methodHandles.hpp" | |
43 #include "prims/nativeLookup.hpp" | |
44 #include "runtime/arguments.hpp" | |
45 #include "runtime/biasedLocking.hpp" | |
46 #include "runtime/handles.inline.hpp" | |
47 #include "runtime/init.hpp" | |
48 #include "runtime/interfaceSupport.hpp" | |
49 #include "runtime/javaCalls.hpp" | |
50 #include "runtime/sharedRuntime.hpp" | |
51 #include "runtime/stubRoutines.hpp" | |
52 #include "runtime/vframe.hpp" | |
53 #include "runtime/vframeArray.hpp" | |
54 #include "utilities/copy.hpp" | |
55 #include "utilities/dtrace.hpp" | |
56 #include "utilities/events.hpp" | |
57 #include "utilities/hashtable.inline.hpp" | |
58 #include "utilities/xmlstream.hpp" | |
59 #ifdef TARGET_ARCH_x86 | |
60 # include "nativeInst_x86.hpp" | |
61 # include "vmreg_x86.inline.hpp" | |
62 #endif | |
63 #ifdef TARGET_ARCH_sparc | |
64 # include "nativeInst_sparc.hpp" | |
65 # include "vmreg_sparc.inline.hpp" | |
66 #endif | |
67 #ifdef TARGET_ARCH_zero | |
68 # include "nativeInst_zero.hpp" | |
69 # include "vmreg_zero.inline.hpp" | |
70 #endif | |
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71 #ifdef TARGET_ARCH_arm |
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72 # include "nativeInst_arm.hpp" |
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73 # include "vmreg_arm.inline.hpp" |
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74 #endif |
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75 #ifdef TARGET_ARCH_ppc |
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76 # include "nativeInst_ppc.hpp" |
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77 # include "vmreg_ppc.inline.hpp" |
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78 #endif |
1972 | 79 #ifdef COMPILER1 |
80 #include "c1/c1_Runtime1.hpp" | |
81 #endif | |
82 | |
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83 // Shared stub locations |
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84 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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85 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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86 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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87 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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88 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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89 |
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90 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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91 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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92 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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93 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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94 |
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95 #ifdef COMPILER2 |
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96 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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97 #endif // COMPILER2 |
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98 |
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99 |
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100 //----------------------------generate_stubs----------------------------------- |
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101 void SharedRuntime::generate_stubs() { |
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102 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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103 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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104 _resolve_opt_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_opt_virtual_call_C), "resolve_opt_virtual_call"); |
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105 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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106 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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107 |
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108 #ifdef COMPILER2 |
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109 // Vectors are generated only by C2. |
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110 if (is_wide_vector(MaxVectorSize)) { |
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111 _polling_page_vectors_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_VECTOR_LOOP); |
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112 } |
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113 #endif // COMPILER2 |
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114 _polling_page_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_LOOP); |
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115 _polling_page_return_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_RETURN); |
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116 |
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117 generate_deopt_blob(); |
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118 |
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119 #ifdef COMPILER2 |
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120 generate_uncommon_trap_blob(); |
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121 #endif // COMPILER2 |
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122 } |
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123 |
0 | 124 #include <math.h> |
125 | |
4006 | 126 #ifndef USDT2 |
0 | 127 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
128 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
129 char*, int, char*, int, char*, int); | |
130 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
131 char*, int, char*, int, char*, int); | |
4006 | 132 #endif /* !USDT2 */ |
0 | 133 |
134 // Implementation of SharedRuntime | |
135 | |
136 #ifndef PRODUCT | |
137 // For statistics | |
138 int SharedRuntime::_ic_miss_ctr = 0; | |
139 int SharedRuntime::_wrong_method_ctr = 0; | |
140 int SharedRuntime::_resolve_static_ctr = 0; | |
141 int SharedRuntime::_resolve_virtual_ctr = 0; | |
142 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
143 int SharedRuntime::_implicit_null_throws = 0; | |
144 int SharedRuntime::_implicit_div0_throws = 0; | |
145 int SharedRuntime::_throw_null_ctr = 0; | |
146 | |
147 int SharedRuntime::_nof_normal_calls = 0; | |
148 int SharedRuntime::_nof_optimized_calls = 0; | |
149 int SharedRuntime::_nof_inlined_calls = 0; | |
150 int SharedRuntime::_nof_megamorphic_calls = 0; | |
151 int SharedRuntime::_nof_static_calls = 0; | |
152 int SharedRuntime::_nof_inlined_static_calls = 0; | |
153 int SharedRuntime::_nof_interface_calls = 0; | |
154 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
155 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
156 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
157 int SharedRuntime::_nof_removable_exceptions = 0; | |
158 | |
159 int SharedRuntime::_new_instance_ctr=0; | |
160 int SharedRuntime::_new_array_ctr=0; | |
161 int SharedRuntime::_multi1_ctr=0; | |
162 int SharedRuntime::_multi2_ctr=0; | |
163 int SharedRuntime::_multi3_ctr=0; | |
164 int SharedRuntime::_multi4_ctr=0; | |
165 int SharedRuntime::_multi5_ctr=0; | |
166 int SharedRuntime::_mon_enter_stub_ctr=0; | |
167 int SharedRuntime::_mon_exit_stub_ctr=0; | |
168 int SharedRuntime::_mon_enter_ctr=0; | |
169 int SharedRuntime::_mon_exit_ctr=0; | |
170 int SharedRuntime::_partial_subtype_ctr=0; | |
171 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
172 int SharedRuntime::_jshort_array_copy_ctr=0; | |
173 int SharedRuntime::_jint_array_copy_ctr=0; | |
174 int SharedRuntime::_jlong_array_copy_ctr=0; | |
175 int SharedRuntime::_oop_array_copy_ctr=0; | |
176 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
177 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
178 int SharedRuntime::_generic_array_copy_ctr=0; | |
179 int SharedRuntime::_slow_array_copy_ctr=0; | |
180 int SharedRuntime::_find_handler_ctr=0; | |
181 int SharedRuntime::_rethrow_ctr=0; | |
182 | |
183 int SharedRuntime::_ICmiss_index = 0; | |
184 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
185 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
186 | |
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187 |
0 | 188 void SharedRuntime::trace_ic_miss(address at) { |
189 for (int i = 0; i < _ICmiss_index; i++) { | |
190 if (_ICmiss_at[i] == at) { | |
191 _ICmiss_count[i]++; | |
192 return; | |
193 } | |
194 } | |
195 int index = _ICmiss_index++; | |
196 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
197 _ICmiss_at[index] = at; | |
198 _ICmiss_count[index] = 1; | |
199 } | |
200 | |
201 void SharedRuntime::print_ic_miss_histogram() { | |
202 if (ICMissHistogram) { | |
203 tty->print_cr ("IC Miss Histogram:"); | |
204 int tot_misses = 0; | |
205 for (int i = 0; i < _ICmiss_index; i++) { | |
206 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
207 tot_misses += _ICmiss_count[i]; | |
208 } | |
209 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
210 } | |
211 } | |
212 #endif // PRODUCT | |
213 | |
342
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214 #ifndef SERIALGC |
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215 |
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216 // G1 write-barrier pre: executed before a pointer store. |
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217 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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218 if (orig == NULL) { |
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219 assert(false, "should be optimized out"); |
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220 return; |
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221 } |
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222 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
342
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223 // store the original value that was in the field reference |
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224 thread->satb_mark_queue().enqueue(orig); |
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225 JRT_END |
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226 |
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227 // G1 write-barrier post: executed after a pointer store. |
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228 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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229 thread->dirty_card_queue().enqueue(card_addr); |
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230 JRT_END |
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231 |
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232 #endif // !SERIALGC |
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233 |
0 | 234 |
235 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
236 return x * y; | |
237 JRT_END | |
238 | |
239 | |
240 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
241 if (x == min_jlong && y == CONST64(-1)) { | |
242 return x; | |
243 } else { | |
244 return x / y; | |
245 } | |
246 JRT_END | |
247 | |
248 | |
249 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
250 if (x == min_jlong && y == CONST64(-1)) { | |
251 return 0; | |
252 } else { | |
253 return x % y; | |
254 } | |
255 JRT_END | |
256 | |
257 | |
258 const juint float_sign_mask = 0x7FFFFFFF; | |
259 const juint float_infinity = 0x7F800000; | |
260 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
261 const julong double_infinity = CONST64(0x7FF0000000000000); | |
262 | |
263 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
264 #ifdef _WIN64 | |
265 // 64-bit Windows on amd64 returns the wrong values for | |
266 // infinity operands. | |
267 union { jfloat f; juint i; } xbits, ybits; | |
268 xbits.f = x; | |
269 ybits.f = y; | |
270 // x Mod Infinity == x unless x is infinity | |
271 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
272 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
273 return x; | |
274 } | |
275 #endif | |
276 return ((jfloat)fmod((double)x,(double)y)); | |
277 JRT_END | |
278 | |
279 | |
280 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
281 #ifdef _WIN64 | |
282 union { jdouble d; julong l; } xbits, ybits; | |
283 xbits.d = x; | |
284 ybits.d = y; | |
285 // x Mod Infinity == x unless x is infinity | |
286 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
287 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
288 return x; | |
289 } | |
290 #endif | |
291 return ((jdouble)fmod((double)x,(double)y)); | |
292 JRT_END | |
293 | |
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294 #ifdef __SOFTFP__ |
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295 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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296 return x + y; |
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297 JRT_END |
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298 |
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299 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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300 return x - y; |
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301 JRT_END |
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302 |
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303 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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304 return x * y; |
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305 JRT_END |
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306 |
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307 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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308 return x / y; |
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309 JRT_END |
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310 |
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311 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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312 return x + y; |
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313 JRT_END |
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314 |
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315 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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316 return x - y; |
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317 JRT_END |
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318 |
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319 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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320 return x * y; |
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321 JRT_END |
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322 |
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323 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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324 return x / y; |
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325 JRT_END |
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326 |
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327 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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328 return (jfloat)x; |
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329 JRT_END |
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330 |
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331 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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332 return (jdouble)x; |
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333 JRT_END |
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334 |
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335 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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336 return (jdouble)x; |
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337 JRT_END |
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338 |
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339 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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340 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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341 JRT_END |
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342 |
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343 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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344 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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345 JRT_END |
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346 |
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347 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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348 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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349 JRT_END |
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350 |
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351 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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352 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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353 JRT_END |
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354 |
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355 // Functions to return the opposite of the aeabi functions for nan. |
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356 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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357 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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358 JRT_END |
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359 |
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360 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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361 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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362 JRT_END |
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363 |
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364 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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365 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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366 JRT_END |
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367 |
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368 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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369 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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370 JRT_END |
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371 |
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372 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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373 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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374 JRT_END |
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375 |
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376 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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377 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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378 JRT_END |
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379 |
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380 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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381 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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382 JRT_END |
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383 |
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384 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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385 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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386 JRT_END |
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387 |
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388 // Intrinsics make gcc generate code for these. |
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389 float SharedRuntime::fneg(float f) { |
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390 return -f; |
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391 } |
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392 |
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393 double SharedRuntime::dneg(double f) { |
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394 return -f; |
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395 } |
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396 |
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397 #endif // __SOFTFP__ |
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398 |
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399 #if defined(__SOFTFP__) || defined(E500V2) |
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400 // Intrinsics make gcc generate code for these. |
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401 double SharedRuntime::dabs(double f) { |
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402 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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403 } |
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404 |
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405 #endif |
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406 |
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407 #if defined(__SOFTFP__) || defined(PPC) |
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408 double SharedRuntime::dsqrt(double f) { |
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409 return sqrt(f); |
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410 } |
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411 #endif |
0 | 412 |
413 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
508
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414 if (g_isnan(x)) |
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415 return 0; |
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416 if (x >= (jfloat) max_jint) |
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417 return max_jint; |
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418 if (x <= (jfloat) min_jint) |
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419 return min_jint; |
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420 return (jint) x; |
0 | 421 JRT_END |
422 | |
423 | |
424 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
508
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425 if (g_isnan(x)) |
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426 return 0; |
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427 if (x >= (jfloat) max_jlong) |
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428 return max_jlong; |
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429 if (x <= (jfloat) min_jlong) |
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430 return min_jlong; |
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431 return (jlong) x; |
0 | 432 JRT_END |
433 | |
434 | |
435 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
508
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436 if (g_isnan(x)) |
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437 return 0; |
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438 if (x >= (jdouble) max_jint) |
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439 return max_jint; |
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440 if (x <= (jdouble) min_jint) |
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441 return min_jint; |
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442 return (jint) x; |
0 | 443 JRT_END |
444 | |
445 | |
446 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
508
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447 if (g_isnan(x)) |
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448 return 0; |
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449 if (x >= (jdouble) max_jlong) |
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450 return max_jlong; |
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451 if (x <= (jdouble) min_jlong) |
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452 return min_jlong; |
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453 return (jlong) x; |
0 | 454 JRT_END |
455 | |
456 | |
457 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
458 return (jfloat)x; | |
459 JRT_END | |
460 | |
461 | |
462 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
463 return (jfloat)x; | |
464 JRT_END | |
465 | |
466 | |
467 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
468 return (jdouble)x; | |
469 JRT_END | |
470 | |
471 // Exception handling accross interpreter/compiler boundaries | |
472 // | |
473 // exception_handler_for_return_address(...) returns the continuation address. | |
474 // The continuation address is the entry point of the exception handler of the | |
475 // previous frame depending on the return address. | |
476 | |
1295 | 477 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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478 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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479 |
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480 // Reset method handle flag. |
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481 thread->set_is_method_handle_return(false); |
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482 |
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483 // The fastest case first |
0 | 484 CodeBlob* blob = CodeCache::find_blob(return_address); |
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485 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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486 if (nm != NULL) { |
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487 // Set flag if return address is a method handle call site. |
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488 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
0 | 489 // native nmethods don't have exception handlers |
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490 assert(!nm->is_native_method(), "no exception handler"); |
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491 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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492 if (nm->is_deopt_pc(return_address)) { |
0 | 493 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
494 } else { | |
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495 return nm->exception_begin(); |
0 | 496 } |
497 } | |
498 | |
499 // Entry code | |
500 if (StubRoutines::returns_to_call_stub(return_address)) { | |
501 return StubRoutines::catch_exception_entry(); | |
502 } | |
503 // Interpreted code | |
504 if (Interpreter::contains(return_address)) { | |
505 return Interpreter::rethrow_exception_entry(); | |
506 } | |
507 | |
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508 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
0 | 509 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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510 |
0 | 511 #ifndef PRODUCT |
512 { ResourceMark rm; | |
513 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
514 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
515 tty->print_cr("b) other problem"); | |
516 } | |
517 #endif // PRODUCT | |
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518 |
0 | 519 ShouldNotReachHere(); |
520 return NULL; | |
521 } | |
522 | |
523 | |
1295 | 524 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
525 return raw_exception_handler_for_return_address(thread, return_address); | |
0 | 526 JRT_END |
527 | |
1295 | 528 |
0 | 529 address SharedRuntime::get_poll_stub(address pc) { |
530 address stub; | |
531 // Look up the code blob | |
532 CodeBlob *cb = CodeCache::find_blob(pc); | |
533 | |
534 // Should be an nmethod | |
535 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
536 | |
537 // Look up the relocation information | |
538 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
539 "safepoint polling: type must be poll" ); | |
540 | |
541 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
542 "Only polling locations are used for safepoint"); | |
543 | |
544 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
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545 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
0 | 546 if (at_poll_return) { |
547 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
548 "polling page return stub not created yet"); | |
1748 | 549 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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550 } else if (has_wide_vectors) { |
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551 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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552 "polling page vectors safepoint stub not created yet"); |
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553 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
0 | 554 } else { |
555 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
556 "polling page safepoint stub not created yet"); | |
1748 | 557 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
0 | 558 } |
559 #ifndef PRODUCT | |
560 if( TraceSafepoint ) { | |
561 char buf[256]; | |
562 jio_snprintf(buf, sizeof(buf), | |
563 "... found polling page %s exception at pc = " | |
564 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
565 at_poll_return ? "return" : "loop", | |
566 (intptr_t)pc, (intptr_t)stub); | |
567 tty->print_raw_cr(buf); | |
568 } | |
569 #endif // PRODUCT | |
570 return stub; | |
571 } | |
572 | |
573 | |
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574 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
0 | 575 assert(caller.is_interpreted_frame(), ""); |
576 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
577 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
578 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
579 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
580 return result; | |
581 } | |
582 | |
583 | |
584 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
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585 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 586 vframeStream vfst(thread, true); |
587 methodHandle method = methodHandle(thread, vfst.method()); | |
588 address bcp = method()->bcp_from(vfst.bci()); | |
589 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
590 } | |
591 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
592 } | |
593 | |
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594 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
0 | 595 Handle h_exception = Exceptions::new_exception(thread, name, message); |
596 throw_and_post_jvmti_exception(thread, h_exception); | |
597 } | |
598 | |
610
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599 // The interpreter code to call this tracing function is only |
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600 // called/generated when TraceRedefineClasses has the right bits |
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601 // set. Since obsolete methods are never compiled, we don't have |
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602 // to modify the compilers to generate calls to this function. |
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603 // |
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604 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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605 JavaThread* thread, Method* method)) |
610
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606 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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607 |
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608 if (method->is_obsolete()) { |
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609 // We are calling an obsolete method, but this is not necessarily |
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610 // an error. Our method could have been redefined just after we |
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611 // fetched the Method* from the constant pool. |
610
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612 |
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613 // RC_TRACE macro has an embedded ResourceMark |
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614 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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615 ("calling obsolete method '%s'", |
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616 method->name_and_sig_as_C_string())); |
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617 if (RC_TRACE_ENABLED(0x00002000)) { |
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618 // this option is provided to debug calls to obsolete methods |
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619 guarantee(false, "faulting at call to an obsolete method."); |
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620 } |
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621 } |
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622 return 0; |
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623 JRT_END |
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624 |
0 | 625 // ret_pc points into caller; we are returning caller's exception handler |
626 // for given exception | |
627 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
628 bool force_unwind, bool top_frame_only) { | |
629 assert(nm != NULL, "must exist"); | |
630 ResourceMark rm; | |
631 | |
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632 #ifdef GRAAL |
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633 // lookup exception handler for this pc |
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634 int catch_pco = ret_pc - nm->code_begin(); |
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635 ExceptionHandlerTable table(nm); |
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636 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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637 if (t != NULL) { |
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638 return nm->code_begin() + t->pco(); |
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639 } else { |
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640 // there is no exception handler for this pc => deoptimize |
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641 nm->make_not_entrant(); |
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642 JavaThread* thread = JavaThread::current(); |
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643 RegisterMap reg_map(thread); |
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644 frame runtime_frame = thread->last_frame(); |
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645 frame caller_frame = runtime_frame.sender(®_map); |
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646 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_not_compiled_exception_handler); |
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647 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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648 } |
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649 |
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650 #else |
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651 |
0 | 652 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
653 // determine handler bci, if any | |
654 EXCEPTION_MARK; | |
655 | |
656 int handler_bci = -1; | |
657 int scope_depth = 0; | |
658 if (!force_unwind) { | |
659 int bci = sd->bci(); | |
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660 bool recursive_exception = false; |
0 | 661 do { |
662 bool skip_scope_increment = false; | |
663 // exception handler lookup | |
664 KlassHandle ek (THREAD, exception->klass()); | |
665 handler_bci = sd->method()->fast_exception_handler_bci_for(ek, bci, THREAD); | |
666 if (HAS_PENDING_EXCEPTION) { | |
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667 recursive_exception = true; |
0 | 668 // We threw an exception while trying to find the exception handler. |
669 // Transfer the new exception to the exception handle which will | |
670 // be set into thread local storage, and do another lookup for an | |
671 // exception handler for this exception, this time starting at the | |
672 // BCI of the exception handler which caused the exception to be | |
673 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
674 // argument to ensure that the correct exception is thrown (4870175). | |
675 exception = Handle(THREAD, PENDING_EXCEPTION); | |
676 CLEAR_PENDING_EXCEPTION; | |
677 if (handler_bci >= 0) { | |
678 bci = handler_bci; | |
679 handler_bci = -1; | |
680 skip_scope_increment = true; | |
681 } | |
682 } | |
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683 else { |
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684 recursive_exception = false; |
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685 } |
0 | 686 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
687 sd = sd->sender(); | |
688 if (sd != NULL) { | |
689 bci = sd->bci(); | |
690 } | |
691 ++scope_depth; | |
692 } | |
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693 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
0 | 694 } |
695 | |
696 // found handling method => lookup exception handler | |
1748 | 697 int catch_pco = ret_pc - nm->code_begin(); |
0 | 698 |
699 ExceptionHandlerTable table(nm); | |
700 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
701 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
702 // Allow abbreviated catch tables. The idea is to allow a method | |
703 // to materialize its exceptions without committing to the exact | |
704 // routing of exceptions. In particular this is needed for adding | |
705 // a synthethic handler to unlock monitors when inlining | |
706 // synchonized methods since the unlock path isn't represented in | |
707 // the bytecodes. | |
708 t = table.entry_for(catch_pco, -1, 0); | |
709 } | |
710 | |
1378
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711 #ifdef COMPILER1 |
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712 if (t == NULL && nm->is_compiled_by_c1()) { |
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713 assert(nm->unwind_handler_begin() != NULL, ""); |
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714 return nm->unwind_handler_begin(); |
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715 } |
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716 #endif |
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717 |
0 | 718 if (t == NULL) { |
719 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
720 tty->print_cr(" Exception:"); | |
721 exception->print(); | |
722 tty->cr(); | |
723 tty->print_cr(" Compiled exception table :"); | |
724 table.print(); | |
725 nm->print_code(); | |
726 guarantee(false, "missing exception handler"); | |
727 return NULL; | |
728 } | |
729 | |
1748 | 730 return nm->code_begin() + t->pco(); |
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731 #endif |
0 | 732 } |
733 | |
734 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
735 // These errors occur only at call sites | |
736 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
737 JRT_END | |
738 | |
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739 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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740 // These errors occur only at call sites |
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741 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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742 JRT_END |
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743 |
0 | 744 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
745 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
746 JRT_END | |
747 | |
748 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
749 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
750 JRT_END | |
751 | |
752 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
753 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
754 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
755 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
756 JRT_END | |
757 | |
758 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
759 // We avoid using the normal exception construction in this case because | |
760 // it performs an upcall to Java, and we're already out of stack space. | |
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761 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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762 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 763 Handle exception (thread, exception_oop); |
764 if (StackTraceInThrowable) { | |
765 java_lang_Throwable::fill_in_stack_trace(exception); | |
766 } | |
767 throw_and_post_jvmti_exception(thread, exception); | |
768 JRT_END | |
769 | |
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770 #ifdef GRAAL |
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771 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
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772 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
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773 if (TraceSignals) { |
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774 tty->print_cr(err_msg("Deoptimizing on implicit exception at relative pc=%d in method %s", pc - nm->entry_point(), nm->method()->name()->as_C_string())); |
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775 } |
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776 thread->_ScratchA = (intptr_t)pc; |
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777 thread->_ScratchB = Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret); |
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778 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
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779 } |
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780 #endif |
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781 |
0 | 782 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
783 address pc, | |
784 SharedRuntime::ImplicitExceptionKind exception_kind) | |
785 { | |
786 address target_pc = NULL; | |
787 | |
788 if (Interpreter::contains(pc)) { | |
789 #ifdef CC_INTERP | |
790 // C++ interpreter doesn't throw implicit exceptions | |
791 ShouldNotReachHere(); | |
792 #else | |
793 switch (exception_kind) { | |
794 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
795 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
796 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
797 default: ShouldNotReachHere(); | |
798 } | |
799 #endif // !CC_INTERP | |
800 } else { | |
801 switch (exception_kind) { | |
802 case STACK_OVERFLOW: { | |
803 // Stack overflow only occurs upon frame setup; the callee is | |
804 // going to be unwound. Dispatch to a shared runtime stub | |
805 // which will cause the StackOverflowError to be fabricated | |
806 // and processed. | |
807 // For stack overflow in deoptimization blob, cleanup thread. | |
808 if (thread->deopt_mark() != NULL) { | |
809 Deoptimization::cleanup_deopt_info(thread, NULL); | |
810 } | |
4944 | 811 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
0 | 812 return StubRoutines::throw_StackOverflowError_entry(); |
813 } | |
814 | |
815 case IMPLICIT_NULL: { | |
816 if (VtableStubs::contains(pc)) { | |
817 // We haven't yet entered the callee frame. Fabricate an | |
818 // exception and begin dispatching it in the caller. Since | |
819 // the caller was at a call site, it's safe to destroy all | |
820 // caller-saved registers, as these entry points do. | |
821 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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822 |
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823 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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824 if (vt_stub == NULL) return NULL; |
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825 |
0 | 826 if (vt_stub->is_abstract_method_error(pc)) { |
827 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
4944 | 828 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
0 | 829 return StubRoutines::throw_AbstractMethodError_entry(); |
830 } else { | |
4944 | 831 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
0 | 832 return StubRoutines::throw_NullPointerException_at_call_entry(); |
833 } | |
834 } else { | |
835 CodeBlob* cb = CodeCache::find_blob(pc); | |
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836 |
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837 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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838 if (cb == NULL) return NULL; |
0 | 839 |
840 // Exception happened in CodeCache. Must be either: | |
841 // 1. Inline-cache check in C2I handler blob, | |
842 // 2. Inline-cache check in nmethod, or | |
843 // 3. Implict null exception in nmethod | |
844 | |
845 if (!cb->is_nmethod()) { | |
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846 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
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847 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
4944 | 848 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
0 | 849 // There is no handler here, so we will simply unwind. |
850 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
851 } | |
852 | |
853 // Otherwise, it's an nmethod. Consult its exception handlers. | |
854 nmethod* nm = (nmethod*)cb; | |
855 if (nm->inlinecache_check_contains(pc)) { | |
856 // exception happened inside inline-cache check code | |
857 // => the nmethod is not yet active (i.e., the frame | |
858 // is not set up yet) => use return address pushed by | |
859 // caller => don't push another return address | |
4944 | 860 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
0 | 861 return StubRoutines::throw_NullPointerException_at_call_entry(); |
862 } | |
863 | |
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864 if (nm->method()->is_method_handle_intrinsic()) { |
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865 // exception happened inside MH dispatch code, similar to a vtable stub |
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866 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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867 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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868 } |
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869 |
0 | 870 #ifndef PRODUCT |
871 _implicit_null_throws++; | |
872 #endif | |
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873 #ifdef GRAAL |
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874 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
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875 #else |
0 | 876 target_pc = nm->continuation_for_implicit_exception(pc); |
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877 #endif |
1250 | 878 // If there's an unexpected fault, target_pc might be NULL, |
879 // in which case we want to fall through into the normal | |
880 // error handling code. | |
0 | 881 } |
882 | |
883 break; // fall through | |
884 } | |
885 | |
886 | |
887 case IMPLICIT_DIVIDE_BY_ZERO: { | |
888 nmethod* nm = CodeCache::find_nmethod(pc); | |
889 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
890 #ifndef PRODUCT | |
891 _implicit_div0_throws++; | |
892 #endif | |
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893 #ifdef GRAAL |
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894 if (TraceSignals) { |
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895 tty->print_cr("graal implicit div0"); |
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896 } |
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897 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
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898 #else |
0 | 899 target_pc = nm->continuation_for_implicit_exception(pc); |
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900 #endif |
1250 | 901 // If there's an unexpected fault, target_pc might be NULL, |
902 // in which case we want to fall through into the normal | |
903 // error handling code. | |
0 | 904 break; // fall through |
905 } | |
906 | |
907 default: ShouldNotReachHere(); | |
908 } | |
909 | |
910 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
911 | |
912 // for AbortVMOnException flag | |
913 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
914 if (exception_kind == IMPLICIT_NULL) { | |
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915 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 916 } else { |
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917 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 918 } |
919 return target_pc; | |
920 } | |
921 | |
922 ShouldNotReachHere(); | |
923 return NULL; | |
924 } | |
925 | |
926 | |
927 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
928 { | |
929 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
930 } | |
931 JNI_END | |
932 | |
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933 JNI_ENTRY(void, throw_unsupported_operation_exception(JNIEnv* env, ...)) |
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934 { |
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935 THROW(vmSymbols::java_lang_UnsupportedOperationException()); |
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936 } |
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937 JNI_END |
0 | 938 |
939 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
940 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
941 } | |
942 | |
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943 address SharedRuntime::native_method_throw_unsupported_operation_exception_entry() { |
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944 return CAST_FROM_FN_PTR(address, &throw_unsupported_operation_exception); |
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945 } |
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946 |
0 | 947 |
948 #ifndef PRODUCT | |
949 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
950 const frame f = thread->last_frame(); | |
951 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
952 #ifndef PRODUCT | |
953 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
954 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
955 #endif // !PRODUCT | |
956 return preserve_this_value; | |
957 JRT_END | |
958 #endif // !PRODUCT | |
959 | |
960 | |
961 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
962 os::yield_all(attempts); | |
963 JRT_END | |
964 | |
965 | |
966 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
967 assert(obj->is_oop(), "must be a valid oop"); | |
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968 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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969 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 970 JRT_END |
971 | |
972 | |
973 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
974 if (thread != NULL) { | |
975 if (thread->is_Java_thread()) { | |
976 oop obj = ((JavaThread*)thread)->threadObj(); | |
977 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
978 } | |
979 } | |
980 return 0; | |
981 } | |
982 | |
983 /** | |
984 * This function ought to be a void function, but cannot be because | |
985 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
986 * 6254741. Once that is fixed we can remove the dummy return value. | |
987 */ | |
988 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
989 return dtrace_object_alloc_base(Thread::current(), o); | |
990 } | |
991 | |
992 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
993 assert(DTraceAllocProbes, "wrong call"); | |
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994 Klass* klass = o->klass(); |
0 | 995 int size = o->size(); |
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996 Symbol* name = klass->name(); |
4006 | 997 #ifndef USDT2 |
0 | 998 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
999 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
4006 | 1000 #else /* USDT2 */ |
1001 HOTSPOT_OBJECT_ALLOC( | |
1002 get_java_tid(thread), | |
1003 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
1004 #endif /* USDT2 */ | |
0 | 1005 return 0; |
1006 } | |
1007 | |
1008 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1009 JavaThread* thread, Method* method)) |
0 | 1010 assert(DTraceMethodProbes, "wrong call"); |
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1011 Symbol* kname = method->klass_name(); |
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1012 Symbol* name = method->name(); |
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1013 Symbol* sig = method->signature(); |
4006 | 1014 #ifndef USDT2 |
0 | 1015 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
1016 kname->bytes(), kname->utf8_length(), | |
1017 name->bytes(), name->utf8_length(), | |
1018 sig->bytes(), sig->utf8_length()); | |
4006 | 1019 #else /* USDT2 */ |
1020 HOTSPOT_METHOD_ENTRY( | |
1021 get_java_tid(thread), | |
1022 (char *) kname->bytes(), kname->utf8_length(), | |
1023 (char *) name->bytes(), name->utf8_length(), | |
1024 (char *) sig->bytes(), sig->utf8_length()); | |
1025 #endif /* USDT2 */ | |
0 | 1026 return 0; |
1027 JRT_END | |
1028 | |
1029 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1030 JavaThread* thread, Method* method)) |
0 | 1031 assert(DTraceMethodProbes, "wrong call"); |
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1032 Symbol* kname = method->klass_name(); |
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1033 Symbol* name = method->name(); |
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1034 Symbol* sig = method->signature(); |
4006 | 1035 #ifndef USDT2 |
0 | 1036 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
1037 kname->bytes(), kname->utf8_length(), | |
1038 name->bytes(), name->utf8_length(), | |
1039 sig->bytes(), sig->utf8_length()); | |
4006 | 1040 #else /* USDT2 */ |
1041 HOTSPOT_METHOD_RETURN( | |
1042 get_java_tid(thread), | |
1043 (char *) kname->bytes(), kname->utf8_length(), | |
1044 (char *) name->bytes(), name->utf8_length(), | |
1045 (char *) sig->bytes(), sig->utf8_length()); | |
1046 #endif /* USDT2 */ | |
0 | 1047 return 0; |
1048 JRT_END | |
1049 | |
1050 | |
1051 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
1052 // for a call current in progress, i.e., arguments has been pushed on stack | |
1053 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
1054 // vtable updates, etc. Caller frame must be compiled. | |
1055 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
1056 ResourceMark rm(THREAD); | |
1057 | |
1058 // last java frame on stack (which includes native call frames) | |
1059 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
1060 | |
1061 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
1062 } | |
1063 | |
1064 | |
1065 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
1066 // for a call current in progress, i.e., arguments has been pushed on stack | |
1067 // but callee has not been invoked yet. Caller frame must be compiled. | |
1068 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
1069 vframeStream& vfst, | |
1070 Bytecodes::Code& bc, | |
1071 CallInfo& callinfo, TRAPS) { | |
1072 Handle receiver; | |
1073 Handle nullHandle; //create a handy null handle for exception returns | |
1074 | |
1075 assert(!vfst.at_end(), "Java frame must exist"); | |
1076 | |
1077 // Find caller and bci from vframe | |
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1078 methodHandle caller(THREAD, vfst.method()); |
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1079 int bci = vfst.bci(); |
0 | 1080 |
1081 // Find bytecode | |
2142 | 1082 Bytecode_invoke bytecode(caller, bci); |
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1083 bc = bytecode.invoke_code(); |
2142 | 1084 int bytecode_index = bytecode.index(); |
0 | 1085 |
1086 // Find receiver for non-static call | |
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1087 if (bc != Bytecodes::_invokestatic && |
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1088 bc != Bytecodes::_invokedynamic) { |
0 | 1089 // This register map must be update since we need to find the receiver for |
1090 // compiled frames. The receiver might be in a register. | |
1091 RegisterMap reg_map2(thread); | |
1092 frame stubFrame = thread->last_frame(); | |
1093 // Caller-frame is a compiled frame | |
1094 frame callerFrame = stubFrame.sender(®_map2); | |
1095 | |
2142 | 1096 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
0 | 1097 if (callee.is_null()) { |
1098 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
1099 } | |
1100 // Retrieve from a compiled argument list | |
1101 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
1102 | |
1103 if (receiver.is_null()) { | |
1104 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
1105 } | |
1106 } | |
1107 | |
1108 // Resolve method. This is parameterized by bytecode. | |
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1109 constantPoolHandle constants(THREAD, caller->constants()); |
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1110 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
0 | 1111 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
1112 | |
1113 #ifdef ASSERT | |
1114 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1115 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
0 | 1116 assert(receiver.not_null(), "should have thrown exception"); |
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1117 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1118 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
0 | 1119 // klass is already loaded |
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1120 KlassHandle static_receiver_klass(THREAD, rk); |
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1121 // Method handle invokes might have been optimized to a direct call |
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1122 // so don't check for the receiver class. |
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1123 // FIXME this weakens the assert too much |
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1124 methodHandle callee = callinfo.selected_method(); |
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1125 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1126 callee->is_method_handle_intrinsic() || |
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1127 callee->is_compiled_lambda_form(), |
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1128 "actual receiver must be subclass of static receiver klass"); |
0 | 1129 if (receiver_klass->oop_is_instance()) { |
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1130 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
0 | 1131 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1132 receiver_klass()->print(); |
0 | 1133 } |
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1134 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
0 | 1135 } |
1136 } | |
1137 #endif | |
1138 | |
1139 return receiver; | |
1140 } | |
1141 | |
1142 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
1143 ResourceMark rm(THREAD); | |
1144 // We need first to check if any Java activations (compiled, interpreted) | |
1145 // exist on the stack since last JavaCall. If not, we need | |
1146 // to get the target method from the JavaCall wrapper. | |
1147 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
1148 methodHandle callee_method; | |
1149 if (vfst.at_end()) { | |
1150 // No Java frames were found on stack since we did the JavaCall. | |
1151 // Hence the stack can only contain an entry_frame. We need to | |
1152 // find the target method from the stub frame. | |
1153 RegisterMap reg_map(thread, false); | |
1154 frame fr = thread->last_frame(); | |
1155 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
1156 fr = fr.sender(®_map); | |
1157 assert(fr.is_entry_frame(), "must be"); | |
1158 // fr is now pointing to the entry frame. | |
1159 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
1160 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
1161 } else { | |
1162 Bytecodes::Code bc; | |
1163 CallInfo callinfo; | |
1164 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
1165 callee_method = callinfo.selected_method(); | |
1166 } | |
1167 assert(callee_method()->is_method(), "must be"); | |
1168 return callee_method; | |
1169 } | |
1170 | |
1171 // Resolves a call. | |
1172 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
1173 bool is_virtual, | |
1174 bool is_optimized, TRAPS) { | |
1175 methodHandle callee_method; | |
1176 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1177 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
1178 int retry_count = 0; | |
1179 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
1142 | 1180 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
0 | 1181 // If has a pending exception then there is no need to re-try to |
1182 // resolve this method. | |
1183 // If the method has been redefined, we need to try again. | |
1184 // Hack: we have no way to update the vtables of arrays, so don't | |
1185 // require that java.lang.Object has been updated. | |
1186 | |
1187 // It is very unlikely that method is redefined more than 100 times | |
1188 // in the middle of resolve. If it is looping here more than 100 times | |
1189 // means then there could be a bug here. | |
1190 guarantee((retry_count++ < 100), | |
1191 "Could not resolve to latest version of redefined method"); | |
1192 // method is redefined in the middle of resolve so re-try. | |
1193 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1194 } | |
1195 } | |
1196 return callee_method; | |
1197 } | |
1198 | |
1199 // Resolves a call. The compilers generate code for calls that go here | |
1200 // and are patched with the real destination of the call. | |
1201 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
1202 bool is_virtual, | |
1203 bool is_optimized, TRAPS) { | |
1204 | |
1205 ResourceMark rm(thread); | |
1206 RegisterMap cbl_map(thread, false); | |
1207 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
1208 | |
1295 | 1209 CodeBlob* caller_cb = caller_frame.cb(); |
1210 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
1211 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
0 | 1212 // make sure caller is not getting deoptimized |
1213 // and removed before we are done with it. | |
1214 // CLEANUP - with lazy deopt shouldn't need this lock | |
1295 | 1215 nmethodLocker caller_lock(caller_nm); |
0 | 1216 |
1217 | |
1218 // determine call info & receiver | |
1219 // note: a) receiver is NULL for static calls | |
1220 // b) an exception is thrown if receiver is NULL for non-static calls | |
1221 CallInfo call_info; | |
1222 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
1223 Handle receiver = find_callee_info(thread, invoke_code, | |
1224 call_info, CHECK_(methodHandle())); | |
1225 methodHandle callee_method = call_info.selected_method(); | |
1226 | |
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1227 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1228 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1229 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1230 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
0 | 1231 |
1232 #ifndef PRODUCT | |
1233 // tracing/debugging/statistics | |
1234 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
1235 (is_virtual) ? (&_resolve_virtual_ctr) : | |
1236 (&_resolve_static_ctr); | |
1237 Atomic::inc(addr); | |
1238 | |
1239 if (TraceCallFixup) { | |
1240 ResourceMark rm(thread); | |
1241 tty->print("resolving %s%s (%s) call to", | |
1242 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
1243 Bytecodes::name(invoke_code)); | |
1244 callee_method->print_short_name(tty); | |
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1245 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
0 | 1246 } |
1247 #endif | |
1248 | |
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1249 // JSR 292 key invariant: |
1295 | 1250 // If the resolved method is a MethodHandle invoke target the call |
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1251 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1252 // leaving the stack in a state unknown to either caller or callee |
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1253 // TODO detune for now but we might need it again |
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1254 // assert(!callee_method->is_compiled_lambda_form() || |
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1255 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
1295 | 1256 |
0 | 1257 // Compute entry points. This might require generation of C2I converter |
1258 // frames, so we cannot be holding any locks here. Furthermore, the | |
1259 // computation of the entry points is independent of patching the call. We | |
1260 // always return the entry-point, but we only patch the stub if the call has | |
1261 // not been deoptimized. Return values: For a virtual call this is an | |
1262 // (cached_oop, destination address) pair. For a static call/optimized | |
1263 // virtual this is just a destination address. | |
1264 | |
1265 StaticCallInfo static_call_info; | |
1266 CompiledICInfo virtual_call_info; | |
1267 | |
1268 // Make sure the callee nmethod does not get deoptimized and removed before | |
1269 // we are done patching the code. | |
1295 | 1270 nmethod* callee_nm = callee_method->code(); |
1271 nmethodLocker nl_callee(callee_nm); | |
0 | 1272 #ifdef ASSERT |
1295 | 1273 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
0 | 1274 #endif |
1275 | |
1276 if (is_virtual) { | |
1277 assert(receiver.not_null(), "sanity check"); | |
1278 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
1279 KlassHandle h_klass(THREAD, receiver->klass()); | |
1280 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
1281 is_optimized, static_bound, virtual_call_info, | |
1282 CHECK_(methodHandle())); | |
1283 } else { | |
1284 // static call | |
1285 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
1286 } | |
1287 | |
1288 // grab lock, check for deoptimization and potentially patch caller | |
1289 { | |
1290 MutexLocker ml_patch(CompiledIC_lock); | |
1291 | |
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1292 // Now that we are ready to patch if the Method* was redefined then |
0 | 1293 // don't update call site and let the caller retry. |
1294 | |
1295 if (!callee_method->is_old()) { | |
1296 #ifdef ASSERT | |
1297 // We must not try to patch to jump to an already unloaded method. | |
1298 if (dest_entry_point != 0) { | |
1299 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
1300 "should not unload nmethod while locked"); | |
1301 } | |
1302 #endif | |
1303 if (is_virtual) { | |
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1304 nmethod* nm = callee_nm; |
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1305 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1306 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
0 | 1307 if (inline_cache->is_clean()) { |
1308 inline_cache->set_to_monomorphic(virtual_call_info); | |
1309 } | |
1310 } else { | |
1311 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
1312 if (ssc->is_clean()) ssc->set(static_call_info); | |
1313 } | |
1314 } | |
1315 | |
1316 } // unlock CompiledIC_lock | |
1317 | |
1318 return callee_method; | |
1319 } | |
1320 | |
1321 | |
1322 // Inline caches exist only in compiled code | |
1323 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
1324 #ifdef ASSERT | |
1325 RegisterMap reg_map(thread, false); | |
1326 frame stub_frame = thread->last_frame(); | |
1327 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1328 frame caller_frame = stub_frame.sender(®_map); | |
1329 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
1330 #endif /* ASSERT */ | |
1331 | |
1332 methodHandle callee_method; | |
1333 JRT_BLOCK | |
1334 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1335 // Return Method* through TLS |
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1336 thread->set_vm_result_2(callee_method()); |
0 | 1337 JRT_BLOCK_END |
1338 // return compiled code entry point after potential safepoints | |
1339 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1340 return callee_method->verified_code_entry(); | |
1341 JRT_END | |
1342 | |
1343 | |
1344 // Handle call site that has been made non-entrant | |
1345 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
1346 // 6243940 We might end up in here if the callee is deoptimized | |
1347 // as we race to call it. We don't want to take a safepoint if | |
1348 // the caller was interpreted because the caller frame will look | |
1349 // interpreted to the stack walkers and arguments are now | |
1350 // "compiled" so it is much better to make this transition | |
1351 // invisible to the stack walking code. The i2c path will | |
1352 // place the callee method in the callee_target. It is stashed | |
1353 // there because if we try and find the callee by normal means a | |
1354 // safepoint is possible and have trouble gc'ing the compiled args. | |
1355 RegisterMap reg_map(thread, false); | |
1356 frame stub_frame = thread->last_frame(); | |
1357 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1358 frame caller_frame = stub_frame.sender(®_map); | |
1135
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1359 |
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1360 // MethodHandle invokes don't have a CompiledIC and should always |
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1361 // simply redispatch to the callee_target. |
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1362 address sender_pc = caller_frame.pc(); |
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1363 CodeBlob* sender_cb = caller_frame.cb(); |
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1364 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
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1365 |
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1366 if (caller_frame.is_interpreted_frame() || |
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1367 caller_frame.is_entry_frame()) { |
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1368 Method* callee = thread->callee_target(); |
0 | 1369 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1370 thread->set_vm_result_2(callee); |
0 | 1371 thread->set_callee_target(NULL); |
1372 return callee->get_c2i_entry(); | |
1373 } | |
1374 | |
1375 // Must be compiled to compiled path which is safe to stackwalk | |
1376 methodHandle callee_method; | |
1377 JRT_BLOCK | |
1378 // Force resolving of caller (if we called from compiled frame) | |
1379 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1380 thread->set_vm_result_2(callee_method()); |
0 | 1381 JRT_BLOCK_END |
1382 // return compiled code entry point after potential safepoints | |
1383 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1384 return callee_method->verified_code_entry(); | |
1385 JRT_END | |
1386 | |
1387 | |
1388 // resolve a static call and patch code | |
1389 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
1390 methodHandle callee_method; | |
1391 JRT_BLOCK | |
1392 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1393 thread->set_vm_result_2(callee_method()); |
0 | 1394 JRT_BLOCK_END |
1395 // return compiled code entry point after potential safepoints | |
1396 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1397 return callee_method->verified_code_entry(); | |
1398 JRT_END | |
1399 | |
1400 | |
1401 // resolve virtual call and update inline cache to monomorphic | |
1402 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
1403 methodHandle callee_method; | |
1404 JRT_BLOCK | |
1405 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1406 thread->set_vm_result_2(callee_method()); |
0 | 1407 JRT_BLOCK_END |
1408 // return compiled code entry point after potential safepoints | |
1409 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1410 return callee_method->verified_code_entry(); | |
1411 JRT_END | |
1412 | |
1413 | |
1414 // Resolve a virtual call that can be statically bound (e.g., always | |
1415 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
1416 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
1417 methodHandle callee_method; | |
1418 JRT_BLOCK | |
1419 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1420 thread->set_vm_result_2(callee_method()); |
0 | 1421 JRT_BLOCK_END |
1422 // return compiled code entry point after potential safepoints | |
1423 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1424 return callee_method->verified_code_entry(); | |
1425 JRT_END | |
1426 | |
1427 | |
1428 | |
1429 | |
1430 | |
1431 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
1432 ResourceMark rm(thread); | |
1433 CallInfo call_info; | |
1434 Bytecodes::Code bc; | |
1435 | |
1436 // receiver is NULL for static calls. An exception is thrown for NULL | |
1437 // receivers for non-static calls | |
1438 Handle receiver = find_callee_info(thread, bc, call_info, | |
1439 CHECK_(methodHandle())); | |
1440 // Compiler1 can produce virtual call sites that can actually be statically bound | |
1441 // If we fell thru to below we would think that the site was going megamorphic | |
1442 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
1443 // we'd try and do a vtable dispatch however methods that can be statically bound | |
1444 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
1445 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
1446 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
1447 // never to miss again. I don't believe C2 will produce code like this but if it | |
1448 // did this would still be the correct thing to do for it too, hence no ifdef. | |
1449 // | |
1450 if (call_info.resolved_method()->can_be_statically_bound()) { | |
1451 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
1452 if (TraceCallFixup) { | |
1453 RegisterMap reg_map(thread, false); | |
1454 frame caller_frame = thread->last_frame().sender(®_map); | |
1455 ResourceMark rm(thread); | |
1456 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
1457 callee_method->print_short_name(tty); | |
1458 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
1459 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1460 } | |
1461 return callee_method; | |
1462 } | |
1463 | |
1464 methodHandle callee_method = call_info.selected_method(); | |
1465 | |
1466 bool should_be_mono = false; | |
1467 | |
1468 #ifndef PRODUCT | |
1469 Atomic::inc(&_ic_miss_ctr); | |
1470 | |
1471 // Statistics & Tracing | |
1472 if (TraceCallFixup) { | |
1473 ResourceMark rm(thread); | |
1474 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
1475 callee_method->print_short_name(tty); | |
1476 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1477 } | |
1478 | |
1479 if (ICMissHistogram) { | |
1480 MutexLocker m(VMStatistic_lock); | |
1481 RegisterMap reg_map(thread, false); | |
1482 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
1483 // produce statistics under the lock | |
1484 trace_ic_miss(f.pc()); | |
1485 } | |
1486 #endif | |
1487 | |
1488 // install an event collector so that when a vtable stub is created the | |
1489 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
1490 // event can't be posted when the stub is created as locks are held | |
1491 // - instead the event will be deferred until the event collector goes | |
1492 // out of scope. | |
1493 JvmtiDynamicCodeEventCollector event_collector; | |
1494 | |
1495 // Update inline cache to megamorphic. Skip update if caller has been | |
1496 // made non-entrant or we are called from interpreted. | |
1497 { MutexLocker ml_patch (CompiledIC_lock); | |
1498 RegisterMap reg_map(thread, false); | |
1499 frame caller_frame = thread->last_frame().sender(®_map); | |
1500 CodeBlob* cb = caller_frame.cb(); | |
1501 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
1502 // Not a non-entrant nmethod, so find inline_cache | |
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1503 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
0 | 1504 bool should_be_mono = false; |
1505 if (inline_cache->is_optimized()) { | |
1506 if (TraceCallFixup) { | |
1507 ResourceMark rm(thread); | |
1508 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
1509 callee_method->print_short_name(tty); | |
1510 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1511 } | |
1512 should_be_mono = true; | |
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1513 } else if (inline_cache->is_icholder_call()) { |
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1514 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1515 if ( ic_oop != NULL) { |
0 | 1516 |
1517 if (receiver()->klass() == ic_oop->holder_klass()) { | |
1518 // This isn't a real miss. We must have seen that compiled code | |
1519 // is now available and we want the call site converted to a | |
1520 // monomorphic compiled call site. | |
1521 // We can't assert for callee_method->code() != NULL because it | |
1522 // could have been deoptimized in the meantime | |
1523 if (TraceCallFixup) { | |
1524 ResourceMark rm(thread); | |
1525 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
1526 callee_method->print_short_name(tty); | |
1527 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1528 } | |
1529 should_be_mono = true; | |
1530 } | |
1531 } | |
1532 } | |
1533 | |
1534 if (should_be_mono) { | |
1535 | |
1536 // We have a path that was monomorphic but was going interpreted | |
1537 // and now we have (or had) a compiled entry. We correct the IC | |
1538 // by using a new icBuffer. | |
1539 CompiledICInfo info; | |
1540 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
1541 inline_cache->compute_monomorphic_entry(callee_method, | |
1542 receiver_klass, | |
1543 inline_cache->is_optimized(), | |
1544 false, | |
1545 info, CHECK_(methodHandle())); | |
1546 inline_cache->set_to_monomorphic(info); | |
1547 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
1548 // Change to megamorphic | |
1549 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
1550 } else { | |
1551 // Either clean or megamorphic | |
1552 } | |
1553 } | |
1554 } // Release CompiledIC_lock | |
1555 | |
1556 return callee_method; | |
1557 } | |
1558 | |
1559 // | |
1560 // Resets a call-site in compiled code so it will get resolved again. | |
1561 // This routines handles both virtual call sites, optimized virtual call | |
1562 // sites, and static call sites. Typically used to change a call sites | |
1563 // destination from compiled to interpreted. | |
1564 // | |
1565 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
1566 ResourceMark rm(thread); | |
1567 RegisterMap reg_map(thread, false); | |
1568 frame stub_frame = thread->last_frame(); | |
1569 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
1570 frame caller = stub_frame.sender(®_map); | |
1571 | |
1572 // Do nothing if the frame isn't a live compiled frame. | |
1573 // nmethod could be deoptimized by the time we get here | |
1574 // so no update to the caller is needed. | |
1575 | |
1576 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
1577 | |
1578 address pc = caller.pc(); | |
1579 | |
1580 // Default call_addr is the location of the "basic" call. | |
1581 // Determine the address of the call we a reresolving. With | |
1582 // Inline Caches we will always find a recognizable call. | |
1583 // With Inline Caches disabled we may or may not find a | |
1584 // recognizable call. We will always find a call for static | |
1585 // calls and for optimized virtual calls. For vanilla virtual | |
1586 // calls it depends on the state of the UseInlineCaches switch. | |
1587 // | |
1588 // With Inline Caches disabled we can get here for a virtual call | |
1589 // for two reasons: | |
1590 // 1 - calling an abstract method. The vtable for abstract methods | |
1591 // will run us thru handle_wrong_method and we will eventually | |
1592 // end up in the interpreter to throw the ame. | |
1593 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
1594 // call and between the time we fetch the entry address and | |
1595 // we jump to it the target gets deoptimized. Similar to 1 | |
1596 // we will wind up in the interprter (thru a c2i with c2). | |
1597 // | |
1598 address call_addr = NULL; | |
1599 { | |
1600 // Get call instruction under lock because another thread may be | |
1601 // busy patching it. | |
1602 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1603 // Location of call instruction | |
1604 if (NativeCall::is_call_before(pc)) { | |
1605 NativeCall *ncall = nativeCall_before(pc); | |
1606 call_addr = ncall->instruction_address(); | |
1607 } | |
1608 } | |
1609 | |
1610 // Check for static or virtual call | |
1611 bool is_static_call = false; | |
1612 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
1613 // Make sure nmethod doesn't get deoptimized and removed until | |
1614 // this is done with it. | |
1615 // CLEANUP - with lazy deopt shouldn't need this lock | |
1616 nmethodLocker nmlock(caller_nm); | |
1617 | |
1618 if (call_addr != NULL) { | |
1619 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
1620 int ret = iter.next(); // Get item | |
1621 if (ret) { | |
1622 assert(iter.addr() == call_addr, "must find call"); | |
1623 if (iter.type() == relocInfo::static_call_type) { | |
1624 is_static_call = true; | |
1625 } else { | |
1626 assert(iter.type() == relocInfo::virtual_call_type || | |
1627 iter.type() == relocInfo::opt_virtual_call_type | |
1628 , "unexpected relocInfo. type"); | |
1629 } | |
1630 } else { | |
1631 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
1632 } | |
1633 | |
1634 // Cleaning the inline cache will force a new resolve. This is more robust | |
1635 // than directly setting it to the new destination, since resolving of calls | |
1636 // is always done through the same code path. (experience shows that it | |
1637 // leads to very hard to track down bugs, if an inline cache gets updated | |
1638 // to a wrong method). It should not be performance critical, since the | |
1639 // resolve is only done once. | |
1640 | |
1641 MutexLocker ml(CompiledIC_lock); | |
1642 // | |
1643 // We do not patch the call site if the nmethod has been made non-entrant | |
1644 // as it is a waste of time | |
1645 // | |
1646 if (caller_nm->is_in_use()) { | |
1647 if (is_static_call) { | |
1648 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
1649 ssc->set_to_clean(); | |
1650 } else { | |
1651 // compiled, dispatched call (which used to call an interpreted method) | |
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1652 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
0 | 1653 inline_cache->set_to_clean(); |
1654 } | |
1655 } | |
1656 } | |
1657 | |
1658 } | |
1659 | |
1660 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
1661 | |
1662 | |
1663 #ifndef PRODUCT | |
1664 Atomic::inc(&_wrong_method_ctr); | |
1665 | |
1666 if (TraceCallFixup) { | |
1667 ResourceMark rm(thread); | |
1668 tty->print("handle_wrong_method reresolving call to"); | |
1669 callee_method->print_short_name(tty); | |
1670 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1671 } | |
1672 #endif | |
1673 | |
1674 return callee_method; | |
1675 } | |
1676 | |
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1677 #ifdef ASSERT |
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1678 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1679 const BasicType* sig_bt, |
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1680 const VMRegPair* regs) { |
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1681 ResourceMark rm; |
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1682 const int total_args_passed = method->size_of_parameters(); |
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1683 const VMRegPair* regs_with_member_name = regs; |
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1684 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1685 |
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1686 const int member_arg_pos = total_args_passed - 1; |
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1687 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1688 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1689 |
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1690 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1691 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1692 |
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1693 for (int i = 0; i < member_arg_pos; i++) { |
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1694 VMReg a = regs_with_member_name[i].first(); |
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1695 VMReg b = regs_without_member_name[i].first(); |
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1696 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1697 } |
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1698 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1699 } |
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1700 #endif |
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1701 |
0 | 1702 // --------------------------------------------------------------------------- |
1703 // We are calling the interpreter via a c2i. Normally this would mean that | |
1704 // we were called by a compiled method. However we could have lost a race | |
1705 // where we went int -> i2c -> c2i and so the caller could in fact be | |
1205 | 1706 // interpreted. If the caller is compiled we attempt to patch the caller |
0 | 1707 // so he no longer calls into the interpreter. |
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1708 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1709 Method* moop(method); |
0 | 1710 |
1711 address entry_point = moop->from_compiled_entry(); | |
1712 | |
1713 // It's possible that deoptimization can occur at a call site which hasn't | |
1714 // been resolved yet, in which case this function will be called from | |
1715 // an nmethod that has been patched for deopt and we can ignore the | |
1716 // request for a fixup. | |
1717 // Also it is possible that we lost a race in that from_compiled_entry | |
1718 // is now back to the i2c in that case we don't need to patch and if | |
1719 // we did we'd leap into space because the callsite needs to use | |
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1720 // "to interpreter" stub in order to load up the Method*. Don't |
0 | 1721 // ask me how I know this... |
1722 | |
1723 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
1205 | 1724 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
1725 return; | |
1726 } | |
1727 | |
1728 // The check above makes sure this is a nmethod. | |
1729 nmethod* nm = cb->as_nmethod_or_null(); | |
1730 assert(nm, "must be"); | |
1731 | |
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1732 // Get the return PC for the passed caller PC. |
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1733 address return_pc = caller_pc + frame::pc_return_offset; |
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1734 |
0 | 1735 // There is a benign race here. We could be attempting to patch to a compiled |
1736 // entry point at the same time the callee is being deoptimized. If that is | |
1737 // the case then entry_point may in fact point to a c2i and we'd patch the | |
1738 // call site with the same old data. clear_code will set code() to NULL | |
1739 // at the end of it. If we happen to see that NULL then we can skip trying | |
1740 // to patch. If we hit the window where the callee has a c2i in the | |
1741 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
1742 // and patch the code with the same old data. Asi es la vida. | |
1743 | |
1744 if (moop->code() == NULL) return; | |
1745 | |
1205 | 1746 if (nm->is_in_use()) { |
0 | 1747 |
1748 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
1749 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1750 if (NativeCall::is_call_before(return_pc)) { |
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1751 NativeCall *call = nativeCall_before(return_pc); |
0 | 1752 // |
1753 // bug 6281185. We might get here after resolving a call site to a vanilla | |
1754 // virtual call. Because the resolvee uses the verified entry it may then | |
1755 // see compiled code and attempt to patch the site by calling us. This would | |
1756 // then incorrectly convert the call site to optimized and its downhill from | |
1757 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
1758 // just made a call site that could be megamorphic into a monomorphic site | |
1759 // for the rest of its life! Just another racing bug in the life of | |
1760 // fixup_callers_callsite ... | |
1761 // | |
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1762 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
0 | 1763 iter.next(); |
1764 assert(iter.has_current(), "must have a reloc at java call site"); | |
1765 relocInfo::relocType typ = iter.reloc()->type(); | |
1766 if ( typ != relocInfo::static_call_type && | |
1767 typ != relocInfo::opt_virtual_call_type && | |
1768 typ != relocInfo::static_stub_type) { | |
1769 return; | |
1770 } | |
1771 address destination = call->destination(); | |
1772 if (destination != entry_point) { | |
1773 CodeBlob* callee = CodeCache::find_blob(destination); | |
1774 // callee == cb seems weird. It means calling interpreter thru stub. | |
1775 if (callee == cb || callee->is_adapter_blob()) { | |
1776 // static call or optimized virtual | |
1777 if (TraceCallFixup) { | |
1204 | 1778 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1779 moop->print_short_name(tty); |
1780 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1781 } | |
1782 call->set_destination_mt_safe(entry_point); | |
1783 } else { | |
1784 if (TraceCallFixup) { | |
1785 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
1786 moop->print_short_name(tty); | |
1787 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1788 } | |
1789 // assert is too strong could also be resolve destinations. | |
1790 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
1791 } | |
1792 } else { | |
1793 if (TraceCallFixup) { | |
1204 | 1794 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1795 moop->print_short_name(tty); |
1796 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1797 } | |
1798 } | |
1799 } | |
1800 } | |
1801 IRT_END | |
1802 | |
1803 | |
1804 // same as JVM_Arraycopy, but called directly from compiled code | |
1805 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
1806 oopDesc* dest, jint dest_pos, | |
1807 jint length, | |
1808 JavaThread* thread)) { | |
1809 #ifndef PRODUCT | |
1810 _slow_array_copy_ctr++; | |
1811 #endif | |
1812 // Check if we have null pointers | |
1813 if (src == NULL || dest == NULL) { | |
1814 THROW(vmSymbols::java_lang_NullPointerException()); | |
1815 } | |
1816 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
1817 // even though the copy_array API also performs dynamic checks to ensure | |
1818 // that src and dest are truly arrays (and are conformable). | |
1819 // The copy_array mechanism is awkward and could be removed, but | |
1820 // the compilers don't call this function except as a last resort, | |
1821 // so it probably doesn't matter. | |
6983 | 1822 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
0 | 1823 (arrayOopDesc*)dest, dest_pos, |
1824 length, thread); | |
1825 } | |
1826 JRT_END | |
1827 | |
1828 char* SharedRuntime::generate_class_cast_message( | |
1829 JavaThread* thread, const char* objName) { | |
1830 | |
1831 // Get target class name from the checkcast instruction | |
1832 vframeStream vfst(thread, true); | |
1833 assert(!vfst.at_end(), "Java frame must exist"); | |
2142 | 1834 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
6983 | 1835 Klass* targetKlass = vfst.method()->constants()->klass_at( |
1836 cc.index(), thread); | |
0 | 1837 return generate_class_cast_message(objName, targetKlass->external_name()); |
1838 } | |
1839 | |
1840 char* SharedRuntime::generate_class_cast_message( | |
710 | 1841 const char* objName, const char* targetKlassName, const char* desc) { |
0 | 1842 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
1843 | |
53 | 1844 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 1845 if (NULL == message) { |
53 | 1846 // Shouldn't happen, but don't cause even more problems if it does |
0 | 1847 message = const_cast<char*>(objName); |
1848 } else { | |
1849 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
1850 } | |
1851 return message; | |
1852 } | |
1853 | |
1854 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
1855 (void) JavaThread::current()->reguard_stack(); | |
1856 JRT_END | |
1857 | |
1858 | |
1859 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
1860 #ifndef PRODUCT | |
1861 int SharedRuntime::_monitor_enter_ctr=0; | |
1862 #endif | |
1863 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
1864 oop obj(_obj); | |
1865 #ifndef PRODUCT | |
1866 _monitor_enter_ctr++; // monitor enter slow | |
1867 #endif | |
1868 if (PrintBiasedLockingStatistics) { | |
1869 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
1870 } | |
1871 Handle h_obj(THREAD, obj); | |
1872 if (UseBiasedLocking) { | |
1873 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
1874 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
1875 } else { | |
1876 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
1877 } | |
1878 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
1879 JRT_END | |
1880 | |
1881 #ifndef PRODUCT | |
1882 int SharedRuntime::_monitor_exit_ctr=0; | |
1883 #endif | |
1884 // Handles the uncommon cases of monitor unlocking in compiled code | |
1885 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
1886 oop obj(_obj); | |
1887 #ifndef PRODUCT | |
1888 _monitor_exit_ctr++; // monitor exit slow | |
1889 #endif | |
1890 Thread* THREAD = JavaThread::current(); | |
1891 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
1892 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
1893 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
1894 #undef MIGHT_HAVE_PENDING | |
1895 #ifdef MIGHT_HAVE_PENDING | |
1896 // Save and restore any pending_exception around the exception mark. | |
1897 // While the slow_exit must not throw an exception, we could come into | |
1898 // this routine with one set. | |
1899 oop pending_excep = NULL; | |
1900 const char* pending_file; | |
1901 int pending_line; | |
1902 if (HAS_PENDING_EXCEPTION) { | |
1903 pending_excep = PENDING_EXCEPTION; | |
1904 pending_file = THREAD->exception_file(); | |
1905 pending_line = THREAD->exception_line(); | |
1906 CLEAR_PENDING_EXCEPTION; | |
1907 } | |
1908 #endif /* MIGHT_HAVE_PENDING */ | |
1909 | |
1910 { | |
1911 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
1912 EXCEPTION_MARK; | |
1913 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
1914 } | |
1915 | |
1916 #ifdef MIGHT_HAVE_PENDING | |
1917 if (pending_excep != NULL) { | |
1918 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
1919 } | |
1920 #endif /* MIGHT_HAVE_PENDING */ | |
1921 JRT_END | |
1922 | |
1923 #ifndef PRODUCT | |
1924 | |
1925 void SharedRuntime::print_statistics() { | |
1926 ttyLocker ttyl; | |
1927 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
1928 | |
1929 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
1930 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
1931 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
1932 | |
1933 SharedRuntime::print_ic_miss_histogram(); | |
1934 | |
1935 if (CountRemovableExceptions) { | |
1936 if (_nof_removable_exceptions > 0) { | |
1937 Unimplemented(); // this counter is not yet incremented | |
1938 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
1939 } | |
1940 } | |
1941 | |
1942 // Dump the JRT_ENTRY counters | |
1943 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
1944 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
1945 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
1946 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
1947 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
1948 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
1949 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
1950 | |
1951 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
1952 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
1953 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
1954 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
1955 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
1956 | |
1957 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
1958 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
1959 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
1960 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
1961 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
1962 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
1963 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
1964 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
1965 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
1966 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
1967 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
1968 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
1969 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
1970 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
1971 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
1972 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
1973 | |
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1974 AdapterHandlerLibrary::print_statistics(); |
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1975 |
0 | 1976 if (xtty != NULL) xtty->tail("statistics"); |
1977 } | |
1978 | |
1979 inline double percent(int x, int y) { | |
1980 return 100.0 * x / MAX2(y, 1); | |
1981 } | |
1982 | |
1983 class MethodArityHistogram { | |
1984 public: | |
1985 enum { MAX_ARITY = 256 }; | |
1986 private: | |
1987 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
1988 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
1989 static int _max_arity; // max. arity seen | |
1990 static int _max_size; // max. arg size seen | |
1991 | |
1992 static void add_method_to_histogram(nmethod* nm) { | |
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1993 Method* m = nm->method(); |
0 | 1994 ArgumentCount args(m->signature()); |
1995 int arity = args.size() + (m->is_static() ? 0 : 1); | |
1996 int argsize = m->size_of_parameters(); | |
1997 arity = MIN2(arity, MAX_ARITY-1); | |
1998 argsize = MIN2(argsize, MAX_ARITY-1); | |
1999 int count = nm->method()->compiled_invocation_count(); | |
2000 _arity_histogram[arity] += count; | |
2001 _size_histogram[argsize] += count; | |
2002 _max_arity = MAX2(_max_arity, arity); | |
2003 _max_size = MAX2(_max_size, argsize); | |
2004 } | |
2005 | |
2006 void print_histogram_helper(int n, int* histo, const char* name) { | |
2007 const int N = MIN2(5, n); | |
2008 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2009 double sum = 0; | |
2010 double weighted_sum = 0; | |
2011 int i; | |
2012 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
2013 double rest = sum; | |
2014 double percent = sum / 100; | |
2015 for (i = 0; i <= N; i++) { | |
2016 rest -= histo[i]; | |
2017 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
2018 } | |
2019 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
2020 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
2021 } | |
2022 | |
2023 void print_histogram() { | |
2024 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2025 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
2026 tty->print_cr("\nSame for parameter size (in words):"); | |
2027 print_histogram_helper(_max_size, _size_histogram, "size"); | |
2028 tty->cr(); | |
2029 } | |
2030 | |
2031 public: | |
2032 MethodArityHistogram() { | |
2033 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
2034 _max_arity = _max_size = 0; | |
2035 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
2036 CodeCache::nmethods_do(add_method_to_histogram); | |
2037 print_histogram(); | |
2038 } | |
2039 }; | |
2040 | |
2041 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
2042 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
2043 int MethodArityHistogram::_max_arity; | |
2044 int MethodArityHistogram::_max_size; | |
2045 | |
2046 void SharedRuntime::print_call_statistics(int comp_total) { | |
2047 tty->print_cr("Calls from compiled code:"); | |
2048 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
2049 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
2050 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
2051 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
2052 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
2053 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
2054 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
2055 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
2056 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
2057 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
2058 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
2059 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
2060 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
2061 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
2062 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
2063 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
2064 tty->cr(); | |
2065 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
2066 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
2067 tty->print_cr(" %% in nested categories are relative to their category"); | |
2068 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
2069 tty->cr(); | |
2070 | |
2071 MethodArityHistogram h; | |
2072 } | |
2073 #endif | |
2074 | |
2075 | |
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2076 // A simple wrapper class around the calling convention information |
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2077 // that allows sharing of adapters for the same calling convention. |
6197 | 2078 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2079 private: |
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2080 enum { |
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2081 _basic_type_bits = 4, |
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2082 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2083 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2084 _compact_int_count = 3 |
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2085 }; |
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2086 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2087 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2088 |
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2089 union { |
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2090 int _compact[_compact_int_count]; |
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2091 int* _fingerprint; |
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2092 } _value; |
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2093 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2094 // Otherwise _value._fingerprint is the array. |
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2095 |
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2096 // Remap BasicTypes that are handled equivalently by the adapters. |
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2097 // These are correct for the current system but someday it might be |
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2098 // necessary to make this mapping platform dependent. |
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2099 static int adapter_encoding(BasicType in) { |
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2100 switch(in) { |
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2101 case T_BOOLEAN: |
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2102 case T_BYTE: |
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2103 case T_SHORT: |
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2104 case T_CHAR: |
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2105 // There are all promoted to T_INT in the calling convention |
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2106 return T_INT; |
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2107 |
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2108 case T_OBJECT: |
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2109 case T_ARRAY: |
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2110 // In other words, we assume that any register good enough for |
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2111 // an int or long is good enough for a managed pointer. |
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2112 #ifdef _LP64 |
1506 | 2113 return T_LONG; |
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2114 #else |
1506 | 2115 return T_INT; |
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2116 #endif |
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2117 |
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2118 case T_INT: |
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2119 case T_LONG: |
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2120 case T_FLOAT: |
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2121 case T_DOUBLE: |
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2122 case T_VOID: |
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2123 return in; |
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2124 |
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2125 default: |
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2126 ShouldNotReachHere(); |
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2127 return T_CONFLICT; |
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2128 } |
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2129 } |
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2130 |
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2131 public: |
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2132 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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2133 // The fingerprint is based on the BasicType signature encoded |
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2134 // into an array of ints with eight entries per int. |
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2135 int* ptr; |
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2136 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2137 if (len <= _compact_int_count) { |
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2138 assert(_compact_int_count == 3, "else change next line"); |
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2139 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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2140 // Storing the signature encoded as signed chars hits about 98% |
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2141 // of the time. |
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2142 _length = -len; |
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2143 ptr = _value._compact; |
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2144 } else { |
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2145 _length = len; |
6197 | 2146 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
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2147 ptr = _value._fingerprint; |
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2148 } |
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2149 |
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2150 // Now pack the BasicTypes with 8 per int |
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2151 int sig_index = 0; |
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2152 for (int index = 0; index < len; index++) { |
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2153 int value = 0; |
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2154 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
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2155 int bt = ((sig_index < total_args_passed) |
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2156 ? adapter_encoding(sig_bt[sig_index++]) |
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2157 : 0); |
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2158 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
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2159 value = (value << _basic_type_bits) | bt; |
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2160 } |
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2161 ptr[index] = value; |
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2162 } |
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2163 } |
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2164 |
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2165 ~AdapterFingerPrint() { |
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2166 if (_length > 0) { |
6197 | 2167 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
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2168 } |
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2169 } |
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2170 |
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2171 int value(int index) { |
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2172 if (_length < 0) { |
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2173 return _value._compact[index]; |
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2174 } |
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|
2175 return _value._fingerprint[index]; |
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never
parents:
1142
diff
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|
2176 } |
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diff
changeset
|
2177 int length() { |
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6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2178 if (_length < 0) return -_length; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2179 return _length; |
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never
parents:
1142
diff
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|
2180 } |
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parents:
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diff
changeset
|
2181 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2182 bool is_compact() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2183 return _length <= 0; |
cf0685d550f1
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diff
changeset
|
2184 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2185 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2186 unsigned int compute_hash() { |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2187 int hash = 0; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2188 for (int i = 0; i < length(); i++) { |
1207
74c848d437ab
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changeset
|
2189 int v = value(i); |
1187
cf0685d550f1
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|
2190 hash = (hash << 8) ^ v ^ (hash >> 5); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2191 } |
cf0685d550f1
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diff
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|
2192 return (unsigned int)hash; |
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diff
changeset
|
2193 } |
cf0685d550f1
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diff
changeset
|
2194 |
cf0685d550f1
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diff
changeset
|
2195 const char* as_string() { |
cf0685d550f1
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1142
diff
changeset
|
2196 stringStream st; |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2197 st.print("0x"); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2198 for (int i = 0; i < length(); i++) { |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
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3451
diff
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|
2199 st.print("%08x", value(i)); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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|
2200 } |
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6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2201 return st.as_string(); |
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6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
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|
2202 } |
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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
|
2203 |
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2204 bool equals(AdapterFingerPrint* other) { |
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parents:
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diff
changeset
|
2205 if (other->_length != _length) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2206 return false; |
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parents:
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diff
changeset
|
2207 } |
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diff
changeset
|
2208 if (_length < 0) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2209 assert(_compact_int_count == 3, "else change next line"); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2210 return _value._compact[0] == other->_value._compact[0] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2211 _value._compact[1] == other->_value._compact[1] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
changeset
|
2212 _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
|
2213 } else { |
cf0685d550f1
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parents:
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diff
changeset
|
2214 for (int i = 0; i < _length; i++) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2215 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2216 return false; |
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parents:
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diff
changeset
|
2217 } |
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parents:
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diff
changeset
|
2218 } |
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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
|
2219 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2220 return true; |
cf0685d550f1
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diff
changeset
|
2221 } |
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diff
changeset
|
2222 }; |
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diff
changeset
|
2223 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2224 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2225 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
6197 | 2226 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2227 friend class AdapterHandlerTableIterator; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2228 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2229 private: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2230 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2231 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2232 static int _lookups; // number of calls to lookup |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2233 static int _buckets; // number of buckets checked |
cf0685d550f1
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diff
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|
2234 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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diff
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|
2235 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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|
2236 static int _compact; // number of equals calls with compact signature |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2237 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2238 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2239 AdapterHandlerEntry* bucket(int i) { |
6197 | 2240 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2241 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2242 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2243 public: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2244 AdapterHandlerTable() |
6197 | 2245 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2246 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2247 // 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
|
2248 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
6197 | 2249 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2250 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2251 return entry; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2252 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2253 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2254 // Insert an entry into the table |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2255 void add(AdapterHandlerEntry* entry) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2256 int index = hash_to_index(entry->hash()); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2257 add_entry(index, entry); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2258 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2259 |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2260 void free_entry(AdapterHandlerEntry* entry) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2261 entry->deallocate(); |
6197 | 2262 BasicHashtable<mtCode>::free_entry(entry); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2263 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2264 |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2265 // Find a entry with the same fingerprint if it exists |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2266 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
|
2267 NOT_PRODUCT(_lookups++); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2268 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
|
2269 unsigned int hash = fp.compute_hash(); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2270 int index = hash_to_index(hash); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2271 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
|
2272 NOT_PRODUCT(_buckets++); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2273 if (e->hash() == hash) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2274 NOT_PRODUCT(_equals++); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2275 if (fp.equals(e->fingerprint())) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2276 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2277 if (fp.is_compact()) _compact++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2278 _hits++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2279 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2280 return e; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2281 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2282 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2283 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2284 return NULL; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2285 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2286 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2287 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2288 void print_statistics() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2289 ResourceMark rm; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2290 int longest = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2291 int empty = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2292 int total = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2293 int nonempty = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2294 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
|
2295 int count = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2296 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
|
2297 count++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2298 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2299 if (count != 0) nonempty++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2300 if (count == 0) empty++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2301 if (count > longest) longest = count; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2302 total += count; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2303 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2304 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
|
2305 empty, longest, total, total / (double)nonempty); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2306 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
|
2307 _lookups, _buckets, _equals, _hits, _compact); |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2308 } |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2309 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2310 }; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
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|
2311 |
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2312 |
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2313 #ifndef PRODUCT |
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2314 |
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2315 int AdapterHandlerTable::_lookups; |
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2316 int AdapterHandlerTable::_buckets; |
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2317 int AdapterHandlerTable::_equals; |
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2318 int AdapterHandlerTable::_hits; |
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2319 int AdapterHandlerTable::_compact; |
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2320 |
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2321 #endif |
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2322 |
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2323 class AdapterHandlerTableIterator : public StackObj { |
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2324 private: |
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2325 AdapterHandlerTable* _table; |
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2326 int _index; |
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2327 AdapterHandlerEntry* _current; |
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2328 |
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2329 void scan() { |
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2330 while (_index < _table->table_size()) { |
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2331 AdapterHandlerEntry* a = _table->bucket(_index); |
1564 | 2332 _index++; |
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2333 if (a != NULL) { |
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2334 _current = a; |
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2335 return; |
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2336 } |
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2337 } |
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2338 } |
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2339 |
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2340 public: |
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2341 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
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2342 scan(); |
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2343 } |
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2344 bool has_next() { |
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2345 return _current != NULL; |
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2346 } |
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2347 AdapterHandlerEntry* next() { |
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2348 if (_current != NULL) { |
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2349 AdapterHandlerEntry* result = _current; |
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2350 _current = _current->next(); |
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2351 if (_current == NULL) scan(); |
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2352 return result; |
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2353 } else { |
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2354 return NULL; |
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2355 } |
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2356 } |
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2357 }; |
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2358 |
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2359 |
0 | 2360 // --------------------------------------------------------------------------- |
2361 // Implementation of AdapterHandlerLibrary | |
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2362 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
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2363 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
0 | 2364 const int AdapterHandlerLibrary_size = 16*K; |
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2365 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
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2366 |
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2367 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
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2368 // Should be called only when AdapterHandlerLibrary_lock is active. |
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2369 if (_buffer == NULL) // Initialize lazily |
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2370 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2371 return _buffer; |
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2372 } |
0 | 2373 |
2374 void AdapterHandlerLibrary::initialize() { | |
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2375 if (_adapters != NULL) return; |
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2376 _adapters = new AdapterHandlerTable(); |
0 | 2377 |
2378 // Create a special handler for abstract methods. Abstract methods | |
2379 // are never compiled so an i2c entry is somewhat meaningless, but | |
2380 // fill it in with something appropriate just in case. Pass handle | |
2381 // wrong method for the c2i transitions. | |
2382 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
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2383 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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2384 StubRoutines::throw_AbstractMethodError_entry(), |
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2385 wrong_method, wrong_method); |
0 | 2386 } |
2387 | |
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2388 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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2389 address i2c_entry, |
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2390 address c2i_entry, |
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2391 address c2i_unverified_entry) { |
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2392 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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2393 } |
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2394 |
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2395 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2396 // Use customized signature handler. Need to lock around updates to |
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2397 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2398 // and a single writer: this could be fixed if it becomes a |
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2399 // problem). |
0 | 2400 |
2401 // Get the address of the ic_miss handlers before we grab the | |
2402 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
2403 // was caused by the initialization of the stubs happening | |
2404 // while we held the lock and then notifying jvmti while | |
2405 // holding it. This just forces the initialization to be a little | |
2406 // earlier. | |
2407 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
2408 assert(ic_miss != NULL, "must have handler"); | |
2409 | |
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2410 ResourceMark rm; |
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2411 |
1748 | 2412 NOT_PRODUCT(int insts_size); |
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2413 AdapterBlob* B = NULL; |
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2414 AdapterHandlerEntry* entry = NULL; |
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2415 AdapterFingerPrint* fingerprint = NULL; |
0 | 2416 { |
2417 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2418 // make sure data structure is initialized | |
2419 initialize(); | |
2420 | |
2421 if (method->is_abstract()) { | |
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2422 return _abstract_method_handler; |
0 | 2423 } |
2424 | |
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2425 // Fill in the signature array, for the calling-convention call. |
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2426 int total_args_passed = method->size_of_parameters(); // All args on stack |
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2427 |
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2428 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2429 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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2430 int i = 0; |
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2431 if (!method->is_static()) // Pass in receiver first |
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2432 sig_bt[i++] = T_OBJECT; |
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2433 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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2434 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2435 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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2436 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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2437 } |
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2438 assert(i == total_args_passed, ""); |
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2439 |
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2440 // Lookup method signature's fingerprint |
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|
2441 entry = _adapters->lookup(total_args_passed, sig_bt); |
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2442 |
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2443 #ifdef ASSERT |
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|
2444 AdapterHandlerEntry* shared_entry = NULL; |
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2445 if (VerifyAdapterSharing && entry != NULL) { |
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|
2446 shared_entry = entry; |
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2447 entry = NULL; |
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|
2448 } |
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2449 #endif |
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|
2450 |
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2451 if (entry != NULL) { |
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2452 return entry; |
0 | 2453 } |
2454 | |
1207
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2455 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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2456 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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2457 |
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2458 // Make a C heap allocated version of the fingerprint to store in the adapter |
1207
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2459 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
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2460 |
0 | 2461 // Create I2C & C2I handlers |
2462 | |
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2463 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
742
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2464 if (buf != NULL) { |
1748 | 2465 CodeBuffer buffer(buf); |
742
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2466 short buffer_locs[20]; |
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2467 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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2468 sizeof(buffer_locs)/sizeof(relocInfo)); |
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2469 MacroAssembler _masm(&buffer); |
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2470 |
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2471 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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|
2472 total_args_passed, |
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diff
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|
2473 comp_args_on_stack, |
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|
2474 sig_bt, |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2475 regs, |
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6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2476 fingerprint); |
0 | 2477 |
1207
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diff
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|
2478 #ifdef ASSERT |
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diff
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|
2479 if (VerifyAdapterSharing) { |
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|
2480 if (shared_entry != NULL) { |
1748 | 2481 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
1207
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|
2482 "code must match"); |
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diff
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|
2483 // Release the one just created and return the original |
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parents:
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diff
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|
2484 _adapters->free_entry(entry); |
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parents:
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diff
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|
2485 return shared_entry; |
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|
2486 } else { |
1748 | 2487 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
1207
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|
2488 } |
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diff
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|
2489 } |
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|
2490 #endif |
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|
2491 |
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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changeset
|
2492 B = AdapterBlob::create(&buffer); |
1748 | 2493 NOT_PRODUCT(insts_size = buffer.insts_size()); |
742
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|
2494 } |
28 | 2495 if (B == NULL) { |
2496 // CodeCache is full, disable compilation | |
2497 // Ought to log this but compile log is only per compile thread | |
2498 // and we're some non descript Java thread. | |
1202 | 2499 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
2500 CompileBroker::handle_full_code_cache(); | |
1187
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|
2501 return NULL; // Out of CodeCache space |
28 | 2502 } |
1748 | 2503 entry->relocate(B->content_begin()); |
0 | 2504 #ifndef PRODUCT |
2505 // debugging suppport | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2506 if (PrintAdapterHandlers || PrintStubCode) { |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
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6792
diff
changeset
|
2507 ttyLocker ttyl; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2508 entry->print_adapter_on(tty); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2509 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
1187
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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
|
2510 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2511 method->signature()->as_C_string(), insts_size); |
0 | 2512 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2513 if (Verbose || PrintStubCode) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2514 address first_pc = entry->base_address(); |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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diff
changeset
|
2515 if (first_pc != NULL) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2516 Disassembler::decode(first_pc, first_pc + insts_size); |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
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diff
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|
2517 tty->cr(); |
b31471cdc53e
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diff
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|
2518 } |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2519 } |
0 | 2520 } |
2521 #endif | |
2522 | |
1187
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|
2523 _adapters->add(entry); |
0 | 2524 } |
2525 // Outside of the lock | |
2526 if (B != NULL) { | |
2527 char blob_id[256]; | |
2528 jio_snprintf(blob_id, | |
2529 sizeof(blob_id), | |
1187
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parents:
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diff
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|
2530 "%s(%s)@" PTR_FORMAT, |
1299
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diff
changeset
|
2531 B->name(), |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2532 fingerprint->as_string(), |
1748 | 2533 B->content_begin()); |
2534 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
0 | 2535 |
2536 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
1748 | 2537 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
0 | 2538 } |
2539 } | |
1187
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1142
diff
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|
2540 return entry; |
0 | 2541 } |
2542 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2543 address AdapterHandlerEntry::base_address() { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2544 address base = _i2c_entry; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
changeset
|
2545 if (base == NULL) base = _c2i_entry; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2546 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2547 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2548 return base; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2549 } |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2550 |
0 | 2551 void AdapterHandlerEntry::relocate(address new_base) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2552 address old_base = base_address(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2553 assert(old_base != NULL, ""); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2554 ptrdiff_t delta = new_base - old_base; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2555 if (_i2c_entry != NULL) |
0 | 2556 _i2c_entry += delta; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2557 if (_c2i_entry != NULL) |
0 | 2558 _c2i_entry += delta; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2559 if (_c2i_unverified_entry != NULL) |
0 | 2560 _c2i_unverified_entry += delta; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2561 assert(base_address() == new_base, ""); |
0 | 2562 } |
2563 | |
1207
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diff
changeset
|
2564 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2565 void AdapterHandlerEntry::deallocate() { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2566 delete _fingerprint; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2567 #ifdef ASSERT |
6197 | 2568 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
2569 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig, mtCode); | |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2570 #endif |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2571 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2572 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2573 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2574 #ifdef ASSERT |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2575 // Capture the code before relocation so that it can be compared |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2576 // against other versions. If the code is captured after relocation |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2577 // then relative instructions won't be equivalent. |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2578 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
6197 | 2579 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2580 _code_length = length; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2581 memcpy(_saved_code, buffer, length); |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2582 _total_args_passed = total_args_passed; |
6197 | 2583 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed, mtCode); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2584 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2585 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2586 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2587 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2588 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2589 if (length != _code_length) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2590 return false; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2591 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2592 for (int i = 0; i < length; i++) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2593 if (buffer[i] != _saved_code[i]) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2594 return false; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2595 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2596 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2597 return true; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2598 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2599 #endif |
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diff
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|
2600 |
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2601 |
0 | 2602 // Create a native wrapper for this native method. The wrapper converts the |
2603 // java compiled calling convention to the native convention, handlizes | |
2604 // arguments, and transitions to native. On return from the native we transition | |
2605 // back to java blocking if a safepoint is in progress. | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2606 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
0 | 2607 ResourceMark rm; |
2608 nmethod* nm = NULL; | |
2609 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2610 assert(method->is_native(), "must be native"); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2611 assert(method->is_method_handle_intrinsic() || |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2612 method->has_native_function(), "must have something valid to call!"); |
0 | 2613 |
2614 { | |
2615 // perform the work while holding the lock, but perform any printing outside the lock | |
2616 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2617 // See if somebody beat us to it | |
2618 nm = method->code(); | |
2619 if (nm) { | |
2620 return nm; | |
2621 } | |
2622 | |
742
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|
2623 ResourceMark rm; |
0 | 2624 |
742
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710
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|
2625 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
45463a04ca27
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|
2626 if (buf != NULL) { |
1748 | 2627 CodeBuffer buffer(buf); |
742
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changeset
|
2628 double locs_buf[20]; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
changeset
|
2629 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
45463a04ca27
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diff
changeset
|
2630 MacroAssembler _masm(&buffer); |
45463a04ca27
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diff
changeset
|
2631 |
45463a04ca27
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diff
changeset
|
2632 // Fill in the signature array, for the calling-convention call. |
6790
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7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
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6725
diff
changeset
|
2633 const int total_args_passed = method->size_of_parameters(); |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
twisti
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6725
diff
changeset
|
2634 |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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6725
diff
changeset
|
2635 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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6725
diff
changeset
|
2636 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
742
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changeset
|
2637 int i=0; |
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changeset
|
2638 if( !method->is_static() ) // Pass in receiver first |
45463a04ca27
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diff
changeset
|
2639 sig_bt[i++] = T_OBJECT; |
45463a04ca27
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diff
changeset
|
2640 SignatureStream ss(method->signature()); |
45463a04ca27
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|
2641 for( ; !ss.at_return_type(); ss.next()) { |
45463a04ca27
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|
2642 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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|
2643 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
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|
2644 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2645 } |
6790
2cb2f30450c7
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twisti
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6725
diff
changeset
|
2646 assert(i == total_args_passed, ""); |
742
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2647 BasicType ret_type = ss.type(); |
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2648 |
6266
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2649 // Now get the compiled-Java layout as input (or output) arguments. |
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2650 // NOTE: Stubs for compiled entry points of method handle intrinsics |
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2651 // are just trampolines so the argument registers must be outgoing ones. |
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2652 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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2653 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
742
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2654 |
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2655 // Generate the compiled-to-native wrapper code |
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2656 nm = SharedRuntime::generate_native_wrapper(&_masm, |
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2657 method, |
2405
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2658 compile_id, |
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2659 sig_bt, |
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2660 regs, |
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2661 ret_type); |
0 | 2662 } |
2663 } | |
2664 | |
2665 // Must unlock before calling set_code | |
1728
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2666 |
0 | 2667 // Install the generated code. |
2668 if (nm != NULL) { | |
2405
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2669 if (PrintCompilation) { |
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2670 ttyLocker ttyl; |
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2671 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
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2672 } |
0 | 2673 method->set_code(method, nm); |
2674 nm->post_compiled_method_load_event(); | |
2675 } else { | |
2676 // CodeCache is full, disable compilation | |
1202 | 2677 CompileBroker::handle_full_code_cache(); |
0 | 2678 } |
2679 return nm; | |
2680 } | |
2681 | |
4873
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2682 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
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2683 assert(thread == JavaThread::current(), "must be"); |
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2684 // The code is about to enter a JNI lazy critical native method and |
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2685 // _needs_gc is true, so if this thread is already in a critical |
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|
2686 // section then just return, otherwise this thread should block |
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|
2687 // until needs_gc has been cleared. |
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|
2688 if (thread->in_critical()) { |
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|
2689 return; |
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|
2690 } |
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|
2691 // Lock and unlock a critical section to give the system a chance to block |
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|
2692 GC_locker::lock_critical(thread); |
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|
2693 GC_locker::unlock_critical(thread); |
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|
2694 JRT_END |
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2695 |
116
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2696 #ifdef HAVE_DTRACE_H |
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2697 // Create a dtrace nmethod for this method. The wrapper converts the |
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2698 // java compiled calling convention to the native convention, makes a dummy call |
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2699 // (actually nops for the size of the call instruction, which become a trap if |
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2700 // probe is enabled). The returns to the caller. Since this all looks like a |
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2701 // leaf no thread transition is needed. |
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2702 |
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2703 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
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2704 ResourceMark rm; |
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2705 nmethod* nm = NULL; |
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2706 |
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2707 if (PrintCompilation) { |
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2708 ttyLocker ttyl; |
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2709 tty->print("--- n%s "); |
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2710 method->print_short_name(tty); |
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2711 if (method->is_static()) { |
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2712 tty->print(" (static)"); |
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2713 } |
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2714 tty->cr(); |
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|
2715 } |
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|
2716 |
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2717 { |
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|
2718 // perform the work while holding the lock, but perform any printing |
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2719 // outside the lock |
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|
2720 MutexLocker mu(AdapterHandlerLibrary_lock); |
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2721 // See if somebody beat us to it |
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2722 nm = method->code(); |
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|
2723 if (nm) { |
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|
2724 return nm; |
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|
2725 } |
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|
2726 |
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|
2727 ResourceMark rm; |
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|
2728 |
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|
2729 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
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2730 if (buf != NULL) { |
1748 | 2731 CodeBuffer buffer(buf); |
742
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|
2732 // Need a few relocation entries |
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|
2733 double locs_buf[20]; |
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|
2734 buffer.insts()->initialize_shared_locs( |
116
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|
2735 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
742
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2736 MacroAssembler _masm(&buffer); |
116
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|
2737 |
742
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|
2738 // Generate the compiled-to-native wrapper code |
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|
2739 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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2740 } |
116
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|
2741 } |
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|
2742 return nm; |
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|
2743 } |
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|
2744 |
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|
2745 // the dtrace method needs to convert java lang string to utf8 string. |
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|
2746 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
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2747 typeArrayOop jlsValue = java_lang_String::value(src); |
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2748 int jlsOffset = java_lang_String::offset(src); |
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2749 int jlsLen = java_lang_String::length(src); |
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2750 jchar* jlsPos = (jlsLen == 0) ? NULL : |
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|
2751 jlsValue->char_at_addr(jlsOffset); |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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|
2752 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
116
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2753 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
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|
2754 } |
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|
2755 #endif // ndef HAVE_DTRACE_H |
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2756 |
0 | 2757 // ------------------------------------------------------------------------- |
2758 // Java-Java calling convention | |
2759 // (what you use when Java calls Java) | |
2760 | |
2761 //------------------------------name_for_receiver---------------------------------- | |
2762 // For a given signature, return the VMReg for parameter 0. | |
2763 VMReg SharedRuntime::name_for_receiver() { | |
2764 VMRegPair regs; | |
2765 BasicType sig_bt = T_OBJECT; | |
2766 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
2767 // Return argument 0 register. In the LP64 build pointers | |
2768 // take 2 registers, but the VM wants only the 'main' name. | |
2769 return regs.first(); | |
2770 } | |
2771 | |
2177
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|
2772 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
0 | 2773 // This method is returning a data structure allocating as a |
2774 // ResourceObject, so do not put any ResourceMarks in here. | |
2775 char *s = sig->as_C_string(); | |
2776 int len = (int)strlen(s); | |
2777 *s++; len--; // Skip opening paren | |
2778 char *t = s+len; | |
2779 while( *(--t) != ')' ) ; // Find close paren | |
2780 | |
2781 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
2782 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
2783 int cnt = 0; | |
1138
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|
2784 if (has_receiver) { |
0 | 2785 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
2786 } | |
2787 | |
2788 while( s < t ) { | |
2789 switch( *s++ ) { // Switch on signature character | |
2790 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
2791 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
2792 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
2793 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
2794 case 'I': sig_bt[cnt++] = T_INT; break; | |
2795 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
2796 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
2797 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
2798 case 'V': sig_bt[cnt++] = T_VOID; break; | |
2799 case 'L': // Oop | |
2800 while( *s++ != ';' ) ; // Skip signature | |
2801 sig_bt[cnt++] = T_OBJECT; | |
2802 break; | |
2803 case '[': { // Array | |
2804 do { // Skip optional size | |
2805 while( *s >= '0' && *s <= '9' ) s++; | |
2806 } while( *s++ == '[' ); // Nested arrays? | |
2807 // Skip element type | |
2808 if( s[-1] == 'L' ) | |
2809 while( *s++ != ';' ) ; // Skip signature | |
2810 sig_bt[cnt++] = T_ARRAY; | |
2811 break; | |
2812 } | |
2813 default : ShouldNotReachHere(); | |
2814 } | |
2815 } | |
2816 assert( cnt < 256, "grow table size" ); | |
2817 | |
2818 int comp_args_on_stack; | |
2819 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
2820 | |
2821 // the calling convention doesn't count out_preserve_stack_slots so | |
2822 // we must add that in to get "true" stack offsets. | |
2823 | |
2824 if (comp_args_on_stack) { | |
2825 for (int i = 0; i < cnt; i++) { | |
2826 VMReg reg1 = regs[i].first(); | |
2827 if( reg1->is_stack()) { | |
2828 // Yuck | |
2829 reg1 = reg1->bias(out_preserve_stack_slots()); | |
2830 } | |
2831 VMReg reg2 = regs[i].second(); | |
2832 if( reg2->is_stack()) { | |
2833 // Yuck | |
2834 reg2 = reg2->bias(out_preserve_stack_slots()); | |
2835 } | |
2836 regs[i].set_pair(reg2, reg1); | |
2837 } | |
2838 } | |
2839 | |
2840 // results | |
2841 *arg_size = cnt; | |
2842 return regs; | |
2843 } | |
2844 | |
2845 // OSR Migration Code | |
2846 // | |
2847 // This code is used convert interpreter frames into compiled frames. It is | |
2848 // called from very start of a compiled OSR nmethod. A temp array is | |
2849 // allocated to hold the interesting bits of the interpreter frame. All | |
2850 // active locks are inflated to allow them to move. The displaced headers and | |
2851 // active interpeter locals are copied into the temp buffer. Then we return | |
2852 // back to the compiled code. The compiled code then pops the current | |
2853 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
2854 // copies the interpreter locals and displaced headers where it wants. | |
2855 // Finally it calls back to free the temp buffer. | |
2856 // | |
2857 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
2858 | |
2859 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
2860 | |
2861 #ifdef IA64 | |
2862 ShouldNotReachHere(); // NYI | |
2863 #endif /* IA64 */ | |
2864 | |
2865 // | |
2866 // This code is dependent on the memory layout of the interpreter local | |
2867 // array and the monitors. On all of our platforms the layout is identical | |
2868 // so this code is shared. If some platform lays the their arrays out | |
2869 // differently then this code could move to platform specific code or | |
2870 // the code here could be modified to copy items one at a time using | |
2871 // frame accessor methods and be platform independent. | |
2872 | |
2873 frame fr = thread->last_frame(); | |
2874 assert( fr.is_interpreted_frame(), "" ); | |
2875 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
2876 | |
2877 // Figure out how many monitors are active. | |
2878 int active_monitor_count = 0; | |
2879 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
2880 kptr < fr.interpreter_frame_monitor_begin(); | |
2881 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
2882 if( kptr->obj() != NULL ) active_monitor_count++; | |
2883 } | |
2884 | |
2885 // QQQ we could place number of active monitors in the array so that compiled code | |
2886 // could double check it. | |
2887 | |
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2888 Method* moop = fr.interpreter_frame_method(); |
0 | 2889 int max_locals = moop->max_locals(); |
2890 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
2891 int buf_size_words = max_locals + active_monitor_count*2; | |
6197 | 2892 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
0 | 2893 |
2894 // Copy the locals. Order is preserved so that loading of longs works. | |
2895 // Since there's no GC I can copy the oops blindly. | |
2896 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
1506 | 2897 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
0 | 2898 (HeapWord*)&buf[0], |
2899 max_locals); | |
2900 | |
2901 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
2902 int i = max_locals; | |
2903 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
2904 kptr2 < fr.interpreter_frame_monitor_begin(); | |
2905 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
2906 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
2907 BasicLock *lock = kptr2->lock(); | |
2908 // Inflate so the displaced header becomes position-independent | |
2909 if (lock->displaced_header()->is_unlocked()) | |
2910 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
2911 // Now the displaced header is free to move | |
2912 buf[i++] = (intptr_t)lock->displaced_header(); | |
2913 buf[i++] = (intptr_t)kptr2->obj(); | |
2914 } | |
2915 } | |
2916 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
2917 | |
2918 return buf; | |
2919 JRT_END | |
2920 | |
2921 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
6197 | 2922 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
0 | 2923 JRT_END |
2924 | |
2925 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
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2926 AdapterHandlerTableIterator iter(_adapters); |
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2927 while (iter.has_next()) { |
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2928 AdapterHandlerEntry* a = iter.next(); |
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2929 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
0 | 2930 } |
2931 return false; | |
2932 } | |
2933 | |
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2934 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
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2935 AdapterHandlerTableIterator iter(_adapters); |
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2936 while (iter.has_next()) { |
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2937 AdapterHandlerEntry* a = iter.next(); |
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2938 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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2939 st->print("Adapter for signature: "); |
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2940 a->print_adapter_on(tty); |
0 | 2941 return; |
2942 } | |
2943 } | |
2944 assert(false, "Should have found handler"); | |
2945 } | |
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2946 |
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2947 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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2948 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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2949 (intptr_t) this, fingerprint()->as_string(), |
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2950 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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2951 |
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2952 } |
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2953 |
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2954 #ifndef PRODUCT |
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2955 |
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2956 void AdapterHandlerLibrary::print_statistics() { |
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2957 _adapters->print_statistics(); |
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2958 } |
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2959 |
0 | 2960 #endif /* PRODUCT */ |