Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 15313:74c3ceb55e57
Override asNode() in FloatingNode and FixedWithNextNode.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Tue, 22 Apr 2014 16:21:37 +0200 |
parents | 4062efea018b |
children | 05397227b8d4 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/compiledIC.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
32 #include "compiler/compileBroker.hpp" | |
33 #include "compiler/compilerOracle.hpp" | |
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34 #include "compiler/disassembler.hpp" |
1972 | 35 #include "interpreter/interpreter.hpp" |
36 #include "interpreter/interpreterRuntime.hpp" | |
37 #include "memory/gcLocker.inline.hpp" | |
38 #include "memory/universe.inline.hpp" | |
39 #include "oops/oop.inline.hpp" | |
40 #include "prims/forte.hpp" | |
41 #include "prims/jvmtiExport.hpp" | |
42 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
43 #include "prims/methodHandles.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "runtime/arguments.hpp" | |
46 #include "runtime/biasedLocking.hpp" | |
47 #include "runtime/handles.inline.hpp" | |
48 #include "runtime/init.hpp" | |
49 #include "runtime/interfaceSupport.hpp" | |
50 #include "runtime/javaCalls.hpp" | |
51 #include "runtime/sharedRuntime.hpp" | |
52 #include "runtime/stubRoutines.hpp" | |
53 #include "runtime/vframe.hpp" | |
54 #include "runtime/vframeArray.hpp" | |
55 #include "utilities/copy.hpp" | |
56 #include "utilities/dtrace.hpp" | |
57 #include "utilities/events.hpp" | |
58 #include "utilities/hashtable.inline.hpp" | |
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59 #include "utilities/macros.hpp" |
1972 | 60 #include "utilities/xmlstream.hpp" |
61 #ifdef TARGET_ARCH_x86 | |
62 # include "nativeInst_x86.hpp" | |
63 # include "vmreg_x86.inline.hpp" | |
64 #endif | |
65 #ifdef TARGET_ARCH_sparc | |
66 # include "nativeInst_sparc.hpp" | |
67 # include "vmreg_sparc.inline.hpp" | |
68 #endif | |
69 #ifdef TARGET_ARCH_zero | |
70 # include "nativeInst_zero.hpp" | |
71 # include "vmreg_zero.inline.hpp" | |
72 #endif | |
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73 #ifdef TARGET_ARCH_arm |
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74 # include "nativeInst_arm.hpp" |
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75 # include "vmreg_arm.inline.hpp" |
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76 #endif |
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77 #ifdef TARGET_ARCH_ppc |
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78 # include "nativeInst_ppc.hpp" |
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79 # include "vmreg_ppc.inline.hpp" |
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80 #endif |
1972 | 81 #ifdef COMPILER1 |
82 #include "c1/c1_Runtime1.hpp" | |
83 #endif | |
84 | |
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85 // Shared stub locations |
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86 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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87 RuntimeStub* SharedRuntime::_wrong_method_abstract_blob; |
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88 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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89 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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90 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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91 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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92 |
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93 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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94 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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95 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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96 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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97 |
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98 #ifdef COMPILER2 |
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99 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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100 #endif // COMPILER2 |
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101 |
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102 |
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103 //----------------------------generate_stubs----------------------------------- |
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104 void SharedRuntime::generate_stubs() { |
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105 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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106 _wrong_method_abstract_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_abstract), "wrong_method_abstract_stub"); |
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107 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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108 _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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109 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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110 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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111 |
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112 #ifdef COMPILER2 |
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113 // Vectors are generated only by C2. |
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114 if (is_wide_vector(MaxVectorSize)) { |
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115 _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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116 } |
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117 #endif // COMPILER2 |
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118 _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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119 _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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120 |
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121 generate_deopt_blob(); |
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122 |
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123 #ifdef COMPILER2 |
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124 generate_uncommon_trap_blob(); |
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125 #endif // COMPILER2 |
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126 } |
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127 |
0 | 128 #include <math.h> |
129 | |
14909 | 130 #ifndef USDT2 |
131 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); | |
132 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
133 char*, int, char*, int, char*, int); | |
134 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
135 char*, int, char*, int, char*, int); | |
136 #endif /* !USDT2 */ | |
137 | |
0 | 138 // Implementation of SharedRuntime |
139 | |
140 #ifndef PRODUCT | |
141 // For statistics | |
142 int SharedRuntime::_ic_miss_ctr = 0; | |
143 int SharedRuntime::_wrong_method_ctr = 0; | |
144 int SharedRuntime::_resolve_static_ctr = 0; | |
145 int SharedRuntime::_resolve_virtual_ctr = 0; | |
146 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
147 int SharedRuntime::_implicit_null_throws = 0; | |
148 int SharedRuntime::_implicit_div0_throws = 0; | |
149 int SharedRuntime::_throw_null_ctr = 0; | |
150 | |
151 int SharedRuntime::_nof_normal_calls = 0; | |
152 int SharedRuntime::_nof_optimized_calls = 0; | |
153 int SharedRuntime::_nof_inlined_calls = 0; | |
154 int SharedRuntime::_nof_megamorphic_calls = 0; | |
155 int SharedRuntime::_nof_static_calls = 0; | |
156 int SharedRuntime::_nof_inlined_static_calls = 0; | |
157 int SharedRuntime::_nof_interface_calls = 0; | |
158 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
159 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
160 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
161 int SharedRuntime::_nof_removable_exceptions = 0; | |
162 | |
163 int SharedRuntime::_new_instance_ctr=0; | |
164 int SharedRuntime::_new_array_ctr=0; | |
165 int SharedRuntime::_multi1_ctr=0; | |
166 int SharedRuntime::_multi2_ctr=0; | |
167 int SharedRuntime::_multi3_ctr=0; | |
168 int SharedRuntime::_multi4_ctr=0; | |
169 int SharedRuntime::_multi5_ctr=0; | |
170 int SharedRuntime::_mon_enter_stub_ctr=0; | |
171 int SharedRuntime::_mon_exit_stub_ctr=0; | |
172 int SharedRuntime::_mon_enter_ctr=0; | |
173 int SharedRuntime::_mon_exit_ctr=0; | |
174 int SharedRuntime::_partial_subtype_ctr=0; | |
175 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
176 int SharedRuntime::_jshort_array_copy_ctr=0; | |
177 int SharedRuntime::_jint_array_copy_ctr=0; | |
178 int SharedRuntime::_jlong_array_copy_ctr=0; | |
179 int SharedRuntime::_oop_array_copy_ctr=0; | |
180 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
181 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
182 int SharedRuntime::_generic_array_copy_ctr=0; | |
183 int SharedRuntime::_slow_array_copy_ctr=0; | |
184 int SharedRuntime::_find_handler_ctr=0; | |
185 int SharedRuntime::_rethrow_ctr=0; | |
186 | |
187 int SharedRuntime::_ICmiss_index = 0; | |
188 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
189 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
190 | |
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191 |
0 | 192 void SharedRuntime::trace_ic_miss(address at) { |
193 for (int i = 0; i < _ICmiss_index; i++) { | |
194 if (_ICmiss_at[i] == at) { | |
195 _ICmiss_count[i]++; | |
196 return; | |
197 } | |
198 } | |
199 int index = _ICmiss_index++; | |
200 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
201 _ICmiss_at[index] = at; | |
202 _ICmiss_count[index] = 1; | |
203 } | |
204 | |
205 void SharedRuntime::print_ic_miss_histogram() { | |
206 if (ICMissHistogram) { | |
207 tty->print_cr ("IC Miss Histogram:"); | |
208 int tot_misses = 0; | |
209 for (int i = 0; i < _ICmiss_index; i++) { | |
210 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
211 tot_misses += _ICmiss_count[i]; | |
212 } | |
213 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
214 } | |
215 } | |
216 #endif // PRODUCT | |
217 | |
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218 #if INCLUDE_ALL_GCS |
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219 |
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220 // G1 write-barrier pre: executed before a pointer store. |
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221 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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222 if (orig == NULL) { |
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223 assert(false, "should be optimized out"); |
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224 return; |
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225 } |
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226 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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227 // store the original value that was in the field reference |
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228 thread->satb_mark_queue().enqueue(orig); |
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229 JRT_END |
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230 |
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231 // G1 write-barrier post: executed after a pointer store. |
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232 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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233 thread->dirty_card_queue().enqueue(card_addr); |
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234 JRT_END |
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235 |
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236 #endif // INCLUDE_ALL_GCS |
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237 |
0 | 238 |
239 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
240 return x * y; | |
241 JRT_END | |
242 | |
243 | |
244 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
245 if (x == min_jlong && y == CONST64(-1)) { | |
246 return x; | |
247 } else { | |
248 return x / y; | |
249 } | |
250 JRT_END | |
251 | |
252 | |
253 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
254 if (x == min_jlong && y == CONST64(-1)) { | |
255 return 0; | |
256 } else { | |
257 return x % y; | |
258 } | |
259 JRT_END | |
260 | |
261 | |
262 const juint float_sign_mask = 0x7FFFFFFF; | |
263 const juint float_infinity = 0x7F800000; | |
264 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
265 const julong double_infinity = CONST64(0x7FF0000000000000); | |
266 | |
267 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
268 #ifdef _WIN64 | |
269 // 64-bit Windows on amd64 returns the wrong values for | |
270 // infinity operands. | |
271 union { jfloat f; juint i; } xbits, ybits; | |
272 xbits.f = x; | |
273 ybits.f = y; | |
274 // x Mod Infinity == x unless x is infinity | |
275 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
276 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
277 return x; | |
278 } | |
279 #endif | |
280 return ((jfloat)fmod((double)x,(double)y)); | |
281 JRT_END | |
282 | |
283 | |
284 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
285 #ifdef _WIN64 | |
286 union { jdouble d; julong l; } xbits, ybits; | |
287 xbits.d = x; | |
288 ybits.d = y; | |
289 // x Mod Infinity == x unless x is infinity | |
290 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
291 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
292 return x; | |
293 } | |
294 #endif | |
295 return ((jdouble)fmod((double)x,(double)y)); | |
296 JRT_END | |
297 | |
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298 #ifdef __SOFTFP__ |
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299 JRT_LEAF(jfloat, SharedRuntime::fadd(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::fsub(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::fmul(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(jfloat, SharedRuntime::fdiv(jfloat x, jfloat 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::dadd(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::dsub(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::dmul(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(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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328 return x / y; |
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329 JRT_END |
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330 |
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331 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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332 return (jfloat)x; |
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333 JRT_END |
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334 |
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335 JRT_LEAF(jdouble, SharedRuntime::i2d(jint 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(jdouble, SharedRuntime::f2d(jfloat x)) |
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340 return (jdouble)x; |
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341 JRT_END |
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342 |
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343 JRT_LEAF(int, SharedRuntime::fcmpl(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::fcmpg(float x, float 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::dcmpl(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 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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356 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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357 JRT_END |
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358 |
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359 // Functions to return the opposite of the aeabi functions for nan. |
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360 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float 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_dcmplt(double x, double 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_fcmple(float x, float 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_dcmple(double x, double 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_fcmpge(float x, float 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_dcmpge(double x, double 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_fcmpgt(float x, float 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 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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389 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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390 JRT_END |
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391 |
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392 // Intrinsics make gcc generate code for these. |
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393 float SharedRuntime::fneg(float f) { |
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394 return -f; |
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395 } |
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396 |
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397 double SharedRuntime::dneg(double f) { |
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398 return -f; |
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399 } |
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400 |
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401 #endif // __SOFTFP__ |
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402 |
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403 #if defined(__SOFTFP__) || defined(E500V2) |
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404 // Intrinsics make gcc generate code for these. |
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405 double SharedRuntime::dabs(double f) { |
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406 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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407 } |
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408 |
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409 #endif |
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410 |
14909 | 411 #if defined(__SOFTFP__) || defined(PPC) |
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412 double SharedRuntime::dsqrt(double f) { |
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413 return sqrt(f); |
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414 } |
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415 #endif |
0 | 416 |
417 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
508
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418 if (g_isnan(x)) |
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419 return 0; |
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420 if (x >= (jfloat) max_jint) |
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421 return max_jint; |
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422 if (x <= (jfloat) min_jint) |
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423 return min_jint; |
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424 return (jint) x; |
0 | 425 JRT_END |
426 | |
427 | |
428 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
508
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429 if (g_isnan(x)) |
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430 return 0; |
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431 if (x >= (jfloat) max_jlong) |
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432 return max_jlong; |
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433 if (x <= (jfloat) min_jlong) |
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434 return min_jlong; |
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435 return (jlong) x; |
0 | 436 JRT_END |
437 | |
438 | |
439 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
508
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440 if (g_isnan(x)) |
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441 return 0; |
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442 if (x >= (jdouble) max_jint) |
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443 return max_jint; |
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444 if (x <= (jdouble) min_jint) |
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445 return min_jint; |
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446 return (jint) x; |
0 | 447 JRT_END |
448 | |
449 | |
450 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
508
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451 if (g_isnan(x)) |
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452 return 0; |
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453 if (x >= (jdouble) max_jlong) |
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454 return max_jlong; |
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455 if (x <= (jdouble) min_jlong) |
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456 return min_jlong; |
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457 return (jlong) x; |
0 | 458 JRT_END |
459 | |
460 | |
461 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
462 return (jfloat)x; | |
463 JRT_END | |
464 | |
465 | |
466 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
467 return (jfloat)x; | |
468 JRT_END | |
469 | |
470 | |
471 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
472 return (jdouble)x; | |
473 JRT_END | |
474 | |
14909 | 475 // Exception handling accross interpreter/compiler boundaries |
0 | 476 // |
477 // exception_handler_for_return_address(...) returns the continuation address. | |
478 // The continuation address is the entry point of the exception handler of the | |
479 // previous frame depending on the return address. | |
480 | |
1295 | 481 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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482 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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483 |
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484 // Reset method handle flag. |
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485 thread->set_is_method_handle_return(false); |
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486 |
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487 #ifdef GRAAL |
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488 // Graal's ExceptionHandlerStub expects the thread local exception PC to be clear |
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489 // and other exception handler continuations do not read it |
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490 thread->set_exception_pc(NULL); |
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491 #endif |
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492 |
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493 // The fastest case first |
0 | 494 CodeBlob* blob = CodeCache::find_blob(return_address); |
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495 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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496 if (nm != NULL) { |
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497 // Set flag if return address is a method handle call site. |
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498 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
0 | 499 // native nmethods don't have exception handlers |
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500 assert(!nm->is_native_method(), "no exception handler"); |
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501 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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502 if (nm->is_deopt_pc(return_address)) { |
0 | 503 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
504 } else { | |
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505 return nm->exception_begin(); |
0 | 506 } |
507 } | |
508 | |
509 // Entry code | |
510 if (StubRoutines::returns_to_call_stub(return_address)) { | |
511 return StubRoutines::catch_exception_entry(); | |
512 } | |
513 // Interpreted code | |
514 if (Interpreter::contains(return_address)) { | |
515 return Interpreter::rethrow_exception_entry(); | |
516 } | |
517 | |
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518 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
0 | 519 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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520 |
0 | 521 #ifndef PRODUCT |
522 { ResourceMark rm; | |
523 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
524 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
525 tty->print_cr("b) other problem"); | |
526 } | |
527 #endif // PRODUCT | |
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528 |
0 | 529 ShouldNotReachHere(); |
530 return NULL; | |
531 } | |
532 | |
533 | |
1295 | 534 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
535 return raw_exception_handler_for_return_address(thread, return_address); | |
0 | 536 JRT_END |
537 | |
1295 | 538 |
0 | 539 address SharedRuntime::get_poll_stub(address pc) { |
540 address stub; | |
541 // Look up the code blob | |
542 CodeBlob *cb = CodeCache::find_blob(pc); | |
543 | |
544 // Should be an nmethod | |
545 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
546 | |
547 // Look up the relocation information | |
548 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
549 "safepoint polling: type must be poll" ); | |
550 | |
551 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
552 "Only polling locations are used for safepoint"); | |
553 | |
554 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
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555 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
0 | 556 if (at_poll_return) { |
557 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
558 "polling page return stub not created yet"); | |
1748 | 559 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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560 } else if (has_wide_vectors) { |
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561 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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562 "polling page vectors safepoint stub not created yet"); |
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563 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
0 | 564 } else { |
565 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
566 "polling page safepoint stub not created yet"); | |
1748 | 567 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
0 | 568 } |
569 #ifndef PRODUCT | |
570 if( TraceSafepoint ) { | |
571 char buf[256]; | |
572 jio_snprintf(buf, sizeof(buf), | |
573 "... found polling page %s exception at pc = " | |
574 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
575 at_poll_return ? "return" : "loop", | |
576 (intptr_t)pc, (intptr_t)stub); | |
577 tty->print_raw_cr(buf); | |
578 } | |
579 #endif // PRODUCT | |
580 return stub; | |
581 } | |
582 | |
583 | |
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584 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
0 | 585 assert(caller.is_interpreted_frame(), ""); |
586 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
587 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
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588 oop result = cast_to_oop(*caller.interpreter_frame_tos_at(args_size - 1)); |
0 | 589 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); |
590 return result; | |
591 } | |
592 | |
593 | |
594 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
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595 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 596 vframeStream vfst(thread, true); |
597 methodHandle method = methodHandle(thread, vfst.method()); | |
598 address bcp = method()->bcp_from(vfst.bci()); | |
599 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
600 } | |
601 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
602 } | |
603 | |
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604 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
0 | 605 Handle h_exception = Exceptions::new_exception(thread, name, message); |
606 throw_and_post_jvmti_exception(thread, h_exception); | |
607 } | |
608 | |
610
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609 // The interpreter code to call this tracing function is only |
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610 // called/generated when TraceRedefineClasses has the right bits |
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611 // set. Since obsolete methods are never compiled, we don't have |
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612 // to modify the compilers to generate calls to this function. |
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613 // |
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614 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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615 JavaThread* thread, Method* method)) |
610
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616 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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617 |
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618 if (method->is_obsolete()) { |
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619 // We are calling an obsolete method, but this is not necessarily |
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620 // an error. Our method could have been redefined just after we |
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621 // fetched the Method* from the constant pool. |
610
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622 |
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623 // RC_TRACE macro has an embedded ResourceMark |
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624 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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625 ("calling obsolete method '%s'", |
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626 method->name_and_sig_as_C_string())); |
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627 if (RC_TRACE_ENABLED(0x00002000)) { |
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628 // this option is provided to debug calls to obsolete methods |
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629 guarantee(false, "faulting at call to an obsolete method."); |
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630 } |
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631 } |
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632 return 0; |
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633 JRT_END |
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634 |
0 | 635 // ret_pc points into caller; we are returning caller's exception handler |
636 // for given exception | |
637 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
638 bool force_unwind, bool top_frame_only) { | |
639 assert(nm != NULL, "must exist"); | |
640 ResourceMark rm; | |
641 | |
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642 #ifdef GRAAL |
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643 if (nm->is_compiled_by_graal()) { |
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644 // lookup exception handler for this pc |
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645 int catch_pco = ret_pc - nm->code_begin(); |
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646 ExceptionHandlerTable table(nm); |
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647 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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648 if (t != NULL) { |
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649 return nm->code_begin() + t->pco(); |
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650 } else { |
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651 // there is no exception handler for this pc => deoptimize |
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652 nm->make_not_entrant(); |
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653 JavaThread* thread = JavaThread::current(); |
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654 RegisterMap reg_map(thread); |
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655 frame runtime_frame = thread->last_frame(); |
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656 frame caller_frame = runtime_frame.sender(®_map); |
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657 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_not_compiled_exception_handler); |
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658 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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659 } |
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660 } |
7154
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661 #endif |
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662 |
0 | 663 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
664 // determine handler bci, if any | |
665 EXCEPTION_MARK; | |
666 | |
667 int handler_bci = -1; | |
668 int scope_depth = 0; | |
669 if (!force_unwind) { | |
670 int bci = sd->bci(); | |
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671 bool recursive_exception = false; |
0 | 672 do { |
673 bool skip_scope_increment = false; | |
674 // exception handler lookup | |
675 KlassHandle ek (THREAD, exception->klass()); | |
7469
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676 methodHandle mh(THREAD, sd->method()); |
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677 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
0 | 678 if (HAS_PENDING_EXCEPTION) { |
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679 recursive_exception = true; |
0 | 680 // We threw an exception while trying to find the exception handler. |
681 // Transfer the new exception to the exception handle which will | |
682 // be set into thread local storage, and do another lookup for an | |
683 // exception handler for this exception, this time starting at the | |
684 // BCI of the exception handler which caused the exception to be | |
685 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
686 // argument to ensure that the correct exception is thrown (4870175). | |
687 exception = Handle(THREAD, PENDING_EXCEPTION); | |
688 CLEAR_PENDING_EXCEPTION; | |
689 if (handler_bci >= 0) { | |
690 bci = handler_bci; | |
691 handler_bci = -1; | |
692 skip_scope_increment = true; | |
693 } | |
694 } | |
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695 else { |
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696 recursive_exception = false; |
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697 } |
0 | 698 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
699 sd = sd->sender(); | |
700 if (sd != NULL) { | |
701 bci = sd->bci(); | |
702 } | |
703 ++scope_depth; | |
704 } | |
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705 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
0 | 706 } |
707 | |
708 // found handling method => lookup exception handler | |
1748 | 709 int catch_pco = ret_pc - nm->code_begin(); |
0 | 710 |
711 ExceptionHandlerTable table(nm); | |
712 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
713 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
714 // Allow abbreviated catch tables. The idea is to allow a method | |
715 // to materialize its exceptions without committing to the exact | |
716 // routing of exceptions. In particular this is needed for adding | |
14909 | 717 // a synthethic handler to unlock monitors when inlining |
718 // synchonized methods since the unlock path isn't represented in | |
0 | 719 // the bytecodes. |
720 t = table.entry_for(catch_pco, -1, 0); | |
721 } | |
722 | |
1378
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723 #ifdef COMPILER1 |
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724 if (t == NULL && nm->is_compiled_by_c1()) { |
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725 assert(nm->unwind_handler_begin() != NULL, ""); |
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726 return nm->unwind_handler_begin(); |
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727 } |
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728 #endif |
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729 |
0 | 730 if (t == NULL) { |
731 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
732 tty->print_cr(" Exception:"); | |
733 exception->print(); | |
734 tty->cr(); | |
735 tty->print_cr(" Compiled exception table :"); | |
736 table.print(); | |
737 nm->print_code(); | |
738 guarantee(false, "missing exception handler"); | |
739 return NULL; | |
740 } | |
741 | |
1748 | 742 return nm->code_begin() + t->pco(); |
0 | 743 } |
744 | |
745 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
746 // These errors occur only at call sites | |
747 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
748 JRT_END | |
749 | |
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750 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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751 // These errors occur only at call sites |
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752 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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753 JRT_END |
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754 |
0 | 755 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
756 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
757 JRT_END | |
758 | |
759 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
760 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
761 JRT_END | |
762 | |
763 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
764 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
765 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
766 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
767 JRT_END | |
768 | |
769 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
770 // We avoid using the normal exception construction in this case because | |
771 // it performs an upcall to Java, and we're already out of stack space. | |
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772 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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773 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 774 Handle exception (thread, exception_oop); |
775 if (StackTraceInThrowable) { | |
776 java_lang_Throwable::fill_in_stack_trace(exception); | |
777 } | |
778 throw_and_post_jvmti_exception(thread, exception); | |
779 JRT_END | |
780 | |
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781 #ifdef GRAAL |
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782 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
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783 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
10409 | 784 thread->set_graal_implicit_exception_pc(pc); |
8337
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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785 thread->set_pending_deoptimization(Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret)); |
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Christian Haeubl <christian.haeubl@oracle.com>
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786 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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|
787 } |
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788 #endif |
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Thomas Wuerthinger <thomas@wuerthinger.net>
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789 |
0 | 790 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
791 address pc, | |
792 SharedRuntime::ImplicitExceptionKind exception_kind) | |
793 { | |
794 address target_pc = NULL; | |
795 | |
796 if (Interpreter::contains(pc)) { | |
797 #ifdef CC_INTERP | |
798 // C++ interpreter doesn't throw implicit exceptions | |
799 ShouldNotReachHere(); | |
800 #else | |
801 switch (exception_kind) { | |
802 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
803 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
804 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
805 default: ShouldNotReachHere(); | |
806 } | |
807 #endif // !CC_INTERP | |
808 } else { | |
809 switch (exception_kind) { | |
810 case STACK_OVERFLOW: { | |
811 // Stack overflow only occurs upon frame setup; the callee is | |
812 // going to be unwound. Dispatch to a shared runtime stub | |
813 // which will cause the StackOverflowError to be fabricated | |
814 // and processed. | |
815 // For stack overflow in deoptimization blob, cleanup thread. | |
816 if (thread->deopt_mark() != NULL) { | |
817 Deoptimization::cleanup_deopt_info(thread, NULL); | |
818 } | |
4944 | 819 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
0 | 820 return StubRoutines::throw_StackOverflowError_entry(); |
821 } | |
822 | |
823 case IMPLICIT_NULL: { | |
824 if (VtableStubs::contains(pc)) { | |
825 // We haven't yet entered the callee frame. Fabricate an | |
826 // exception and begin dispatching it in the caller. Since | |
827 // the caller was at a call site, it's safe to destroy all | |
828 // caller-saved registers, as these entry points do. | |
829 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
465
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830 |
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831 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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832 if (vt_stub == NULL) return NULL; |
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833 |
0 | 834 if (vt_stub->is_abstract_method_error(pc)) { |
835 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
4944 | 836 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
0 | 837 return StubRoutines::throw_AbstractMethodError_entry(); |
838 } else { | |
4944 | 839 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
0 | 840 return StubRoutines::throw_NullPointerException_at_call_entry(); |
841 } | |
842 } else { | |
843 CodeBlob* cb = CodeCache::find_blob(pc); | |
465
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844 |
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845 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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846 if (cb == NULL) return NULL; |
0 | 847 |
848 // Exception happened in CodeCache. Must be either: | |
849 // 1. Inline-cache check in C2I handler blob, | |
850 // 2. Inline-cache check in nmethod, or | |
14909 | 851 // 3. Implict null exception in nmethod |
0 | 852 |
853 if (!cb->is_nmethod()) { | |
11029 | 854 bool is_in_blob = cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(); |
855 if (!is_in_blob) { | |
856 cb->print(); | |
857 fatal(err_msg("exception happened outside interpreter, nmethods and vtable stubs at pc " INTPTR_FORMAT, pc)); | |
858 } | |
4944 | 859 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
0 | 860 // There is no handler here, so we will simply unwind. |
861 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
862 } | |
863 | |
864 // Otherwise, it's an nmethod. Consult its exception handlers. | |
865 nmethod* nm = (nmethod*)cb; | |
866 if (nm->inlinecache_check_contains(pc)) { | |
867 // exception happened inside inline-cache check code | |
868 // => the nmethod is not yet active (i.e., the frame | |
869 // is not set up yet) => use return address pushed by | |
870 // caller => don't push another return address | |
4944 | 871 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
0 | 872 return StubRoutines::throw_NullPointerException_at_call_entry(); |
873 } | |
874 | |
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875 if (nm->method()->is_method_handle_intrinsic()) { |
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876 // exception happened inside MH dispatch code, similar to a vtable stub |
1d7922586cf6
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877 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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878 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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879 } |
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880 |
0 | 881 #ifndef PRODUCT |
882 _implicit_null_throws++; | |
883 #endif | |
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723df37192d6
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4137
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changeset
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884 #ifdef GRAAL |
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diff
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885 if (nm->is_compiled_by_graal() && nm->pc_desc_at(pc) != NULL) { |
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886 // If there's no PcDesc then we'll die way down inside of |
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887 // deopt instead of just getting normal error reporting, |
d3225562f0d8
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888 // so only go there if it will succeed. |
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889 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
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890 } else { |
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891 #endif |
0 | 892 target_pc = nm->continuation_for_implicit_exception(pc); |
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893 #ifdef GRAAL |
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894 } |
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895 #endif |
1250 | 896 // If there's an unexpected fault, target_pc might be NULL, |
897 // in which case we want to fall through into the normal | |
898 // error handling code. | |
0 | 899 } |
900 | |
901 break; // fall through | |
902 } | |
903 | |
904 | |
905 case IMPLICIT_DIVIDE_BY_ZERO: { | |
906 nmethod* nm = CodeCache::find_nmethod(pc); | |
907 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
908 #ifndef PRODUCT | |
909 _implicit_div0_throws++; | |
910 #endif | |
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911 #ifdef GRAAL |
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912 if (nm->is_compiled_by_graal() && nm->pc_desc_at(pc) != NULL) { |
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913 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
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914 } else { |
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915 #endif |
0 | 916 target_pc = nm->continuation_for_implicit_exception(pc); |
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917 #ifdef GRAAL |
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918 } |
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919 #endif |
1250 | 920 // If there's an unexpected fault, target_pc might be NULL, |
921 // in which case we want to fall through into the normal | |
922 // error handling code. | |
0 | 923 break; // fall through |
924 } | |
925 | |
926 default: ShouldNotReachHere(); | |
927 } | |
928 | |
929 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
930 | |
931 // for AbortVMOnException flag | |
932 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
933 if (exception_kind == IMPLICIT_NULL) { | |
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934 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 935 } else { |
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936 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 937 } |
938 return target_pc; | |
939 } | |
940 | |
941 ShouldNotReachHere(); | |
942 return NULL; | |
943 } | |
944 | |
945 | |
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946 /** |
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947 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
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948 * installed in the native function entry of all native Java methods before |
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949 * they get linked to their actual native methods. |
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950 * |
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951 * \note |
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952 * This method actually never gets called! The reason is because |
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953 * the interpreter's native entries call NativeLookup::lookup() which |
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954 * throws the exception when the lookup fails. The exception is then |
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955 * caught and forwarded on the return from NativeLookup::lookup() call |
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956 * before the call to the native function. This might change in the future. |
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957 */ |
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958 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
0 | 959 { |
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960 // We return a bad value here to make sure that the exception is |
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961 // forwarded before we look at the return value. |
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962 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
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963 } |
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964 JNI_END |
0 | 965 |
966 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
967 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
968 } | |
969 | |
970 | |
971 #ifndef PRODUCT | |
972 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
973 const frame f = thread->last_frame(); | |
974 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
975 #ifndef PRODUCT | |
976 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
977 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
978 #endif // !PRODUCT | |
979 return preserve_this_value; | |
980 JRT_END | |
981 #endif // !PRODUCT | |
982 | |
983 | |
984 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
985 os::yield_all(attempts); | |
986 JRT_END | |
987 | |
988 | |
989 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
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990 #ifdef GRAAL |
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991 if (!obj->klass()->has_finalizer()) { |
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992 return; |
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993 } |
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994 #endif |
0 | 995 assert(obj->is_oop(), "must be a valid oop"); |
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996 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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997 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 998 JRT_END |
999 | |
1000 | |
1001 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
1002 if (thread != NULL) { | |
1003 if (thread->is_Java_thread()) { | |
1004 oop obj = ((JavaThread*)thread)->threadObj(); | |
1005 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
1006 } | |
1007 } | |
1008 return 0; | |
1009 } | |
1010 | |
1011 /** | |
1012 * This function ought to be a void function, but cannot be because | |
1013 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
1014 * 6254741. Once that is fixed we can remove the dummy return value. | |
1015 */ | |
1016 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
1017 return dtrace_object_alloc_base(Thread::current(), o); | |
1018 } | |
1019 | |
1020 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
1021 assert(DTraceAllocProbes, "wrong call"); | |
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1022 Klass* klass = o->klass(); |
0 | 1023 int size = o->size(); |
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1024 Symbol* name = klass->name(); |
14909 | 1025 #ifndef USDT2 |
1026 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), | |
1027 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
1028 #else /* USDT2 */ | |
4006 | 1029 HOTSPOT_OBJECT_ALLOC( |
1030 get_java_tid(thread), | |
1031 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
14909 | 1032 #endif /* USDT2 */ |
0 | 1033 return 0; |
1034 } | |
1035 | |
1036 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1037 JavaThread* thread, Method* method)) |
0 | 1038 assert(DTraceMethodProbes, "wrong call"); |
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1039 Symbol* kname = method->klass_name(); |
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1040 Symbol* name = method->name(); |
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1041 Symbol* sig = method->signature(); |
14909 | 1042 #ifndef USDT2 |
1043 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), | |
1044 kname->bytes(), kname->utf8_length(), | |
1045 name->bytes(), name->utf8_length(), | |
1046 sig->bytes(), sig->utf8_length()); | |
1047 #else /* USDT2 */ | |
4006 | 1048 HOTSPOT_METHOD_ENTRY( |
1049 get_java_tid(thread), | |
1050 (char *) kname->bytes(), kname->utf8_length(), | |
1051 (char *) name->bytes(), name->utf8_length(), | |
1052 (char *) sig->bytes(), sig->utf8_length()); | |
14909 | 1053 #endif /* USDT2 */ |
0 | 1054 return 0; |
1055 JRT_END | |
1056 | |
1057 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1058 JavaThread* thread, Method* method)) |
0 | 1059 assert(DTraceMethodProbes, "wrong call"); |
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1060 Symbol* kname = method->klass_name(); |
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1061 Symbol* name = method->name(); |
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1062 Symbol* sig = method->signature(); |
14909 | 1063 #ifndef USDT2 |
1064 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), | |
1065 kname->bytes(), kname->utf8_length(), | |
1066 name->bytes(), name->utf8_length(), | |
1067 sig->bytes(), sig->utf8_length()); | |
1068 #else /* USDT2 */ | |
4006 | 1069 HOTSPOT_METHOD_RETURN( |
1070 get_java_tid(thread), | |
1071 (char *) kname->bytes(), kname->utf8_length(), | |
1072 (char *) name->bytes(), name->utf8_length(), | |
1073 (char *) sig->bytes(), sig->utf8_length()); | |
14909 | 1074 #endif /* USDT2 */ |
0 | 1075 return 0; |
1076 JRT_END | |
1077 | |
1078 | |
1079 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
1080 // for a call current in progress, i.e., arguments has been pushed on stack | |
1081 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
1082 // vtable updates, etc. Caller frame must be compiled. | |
1083 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
1084 ResourceMark rm(THREAD); | |
1085 | |
1086 // last java frame on stack (which includes native call frames) | |
1087 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
1088 | |
1089 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
1090 } | |
1091 | |
1092 | |
1093 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
1094 // for a call current in progress, i.e., arguments has been pushed on stack | |
1095 // but callee has not been invoked yet. Caller frame must be compiled. | |
1096 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
1097 vframeStream& vfst, | |
1098 Bytecodes::Code& bc, | |
1099 CallInfo& callinfo, TRAPS) { | |
1100 Handle receiver; | |
1101 Handle nullHandle; //create a handy null handle for exception returns | |
1102 | |
1103 assert(!vfst.at_end(), "Java frame must exist"); | |
1104 | |
1105 // Find caller and bci from vframe | |
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1106 methodHandle caller(THREAD, vfst.method()); |
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1107 int bci = vfst.bci(); |
0 | 1108 |
1109 // Find bytecode | |
2142 | 1110 Bytecode_invoke bytecode(caller, bci); |
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1111 bc = bytecode.invoke_code(); |
2142 | 1112 int bytecode_index = bytecode.index(); |
0 | 1113 |
1114 // Find receiver for non-static call | |
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1115 if (bc != Bytecodes::_invokestatic && |
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1116 bc != Bytecodes::_invokedynamic && |
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1117 bc != Bytecodes::_invokehandle) { |
0 | 1118 // This register map must be update since we need to find the receiver for |
1119 // compiled frames. The receiver might be in a register. | |
1120 RegisterMap reg_map2(thread); | |
1121 frame stubFrame = thread->last_frame(); | |
1122 // Caller-frame is a compiled frame | |
1123 frame callerFrame = stubFrame.sender(®_map2); | |
1124 | |
2142 | 1125 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
0 | 1126 if (callee.is_null()) { |
1127 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
1128 } | |
1129 // Retrieve from a compiled argument list | |
1130 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
1131 | |
1132 if (receiver.is_null()) { | |
1133 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
1134 } | |
1135 } | |
1136 | |
1137 // Resolve method. This is parameterized by bytecode. | |
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1138 constantPoolHandle constants(THREAD, caller->constants()); |
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1139 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
0 | 1140 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
1141 | |
1142 #ifdef ASSERT | |
1143 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1144 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic && bc != Bytecodes::_invokehandle) { |
0 | 1145 assert(receiver.not_null(), "should have thrown exception"); |
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1146 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1147 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
0 | 1148 // klass is already loaded |
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1149 KlassHandle static_receiver_klass(THREAD, rk); |
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1150 // Method handle invokes might have been optimized to a direct call |
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1151 // so don't check for the receiver class. |
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1152 // FIXME this weakens the assert too much |
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1153 methodHandle callee = callinfo.selected_method(); |
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1154 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1155 callee->is_method_handle_intrinsic() || |
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1156 callee->is_compiled_lambda_form(), |
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1157 "actual receiver must be subclass of static receiver klass"); |
0 | 1158 if (receiver_klass->oop_is_instance()) { |
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1159 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
0 | 1160 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1161 receiver_klass()->print(); |
0 | 1162 } |
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1163 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
0 | 1164 } |
1165 } | |
1166 #endif | |
1167 | |
1168 return receiver; | |
1169 } | |
1170 | |
1171 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
1172 ResourceMark rm(THREAD); | |
1173 // We need first to check if any Java activations (compiled, interpreted) | |
1174 // exist on the stack since last JavaCall. If not, we need | |
1175 // to get the target method from the JavaCall wrapper. | |
1176 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
1177 methodHandle callee_method; | |
1178 if (vfst.at_end()) { | |
1179 // No Java frames were found on stack since we did the JavaCall. | |
1180 // Hence the stack can only contain an entry_frame. We need to | |
1181 // find the target method from the stub frame. | |
1182 RegisterMap reg_map(thread, false); | |
1183 frame fr = thread->last_frame(); | |
1184 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
1185 fr = fr.sender(®_map); | |
1186 assert(fr.is_entry_frame(), "must be"); | |
1187 // fr is now pointing to the entry frame. | |
1188 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
1189 } else { | |
1190 Bytecodes::Code bc; | |
1191 CallInfo callinfo; | |
1192 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
1193 callee_method = callinfo.selected_method(); | |
1194 } | |
1195 assert(callee_method()->is_method(), "must be"); | |
1196 return callee_method; | |
1197 } | |
1198 | |
1199 // Resolves a call. | |
1200 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
1201 bool is_virtual, | |
1202 bool is_optimized, TRAPS) { | |
1203 methodHandle callee_method; | |
1204 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1205 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
1206 int retry_count = 0; | |
1207 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
1142 | 1208 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
0 | 1209 // If has a pending exception then there is no need to re-try to |
1210 // resolve this method. | |
1211 // If the method has been redefined, we need to try again. | |
1212 // Hack: we have no way to update the vtables of arrays, so don't | |
1213 // require that java.lang.Object has been updated. | |
1214 | |
1215 // It is very unlikely that method is redefined more than 100 times | |
1216 // in the middle of resolve. If it is looping here more than 100 times | |
1217 // means then there could be a bug here. | |
1218 guarantee((retry_count++ < 100), | |
1219 "Could not resolve to latest version of redefined method"); | |
1220 // method is redefined in the middle of resolve so re-try. | |
1221 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1222 } | |
1223 } | |
1224 return callee_method; | |
1225 } | |
1226 | |
1227 // Resolves a call. The compilers generate code for calls that go here | |
1228 // and are patched with the real destination of the call. | |
1229 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
1230 bool is_virtual, | |
1231 bool is_optimized, TRAPS) { | |
1232 | |
1233 ResourceMark rm(thread); | |
1234 RegisterMap cbl_map(thread, false); | |
1235 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
1236 | |
1295 | 1237 CodeBlob* caller_cb = caller_frame.cb(); |
1238 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
1239 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
14212 | 1240 |
0 | 1241 // make sure caller is not getting deoptimized |
1242 // and removed before we are done with it. | |
1243 // CLEANUP - with lazy deopt shouldn't need this lock | |
1295 | 1244 nmethodLocker caller_lock(caller_nm); |
0 | 1245 |
1246 // determine call info & receiver | |
1247 // note: a) receiver is NULL for static calls | |
1248 // b) an exception is thrown if receiver is NULL for non-static calls | |
1249 CallInfo call_info; | |
1250 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
1251 Handle receiver = find_callee_info(thread, invoke_code, | |
1252 call_info, CHECK_(methodHandle())); | |
1253 methodHandle callee_method = call_info.selected_method(); | |
1254 | |
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1255 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1256 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1257 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1258 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
0 | 1259 |
14212 | 1260 // We do not patch the call site if the caller nmethod has been made non-entrant. |
1261 if (!caller_nm->is_in_use()) { | |
1262 return callee_method; | |
1263 } | |
1264 | |
0 | 1265 #ifndef PRODUCT |
1266 // tracing/debugging/statistics | |
1267 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
1268 (is_virtual) ? (&_resolve_virtual_ctr) : | |
1269 (&_resolve_static_ctr); | |
1270 Atomic::inc(addr); | |
1271 | |
1272 if (TraceCallFixup) { | |
1273 ResourceMark rm(thread); | |
1274 tty->print("resolving %s%s (%s) call to", | |
1275 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
1276 Bytecodes::name(invoke_code)); | |
1277 callee_method->print_short_name(tty); | |
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1278 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
0 | 1279 } |
1280 #endif | |
1281 | |
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1282 // JSR 292 key invariant: |
1295 | 1283 // If the resolved method is a MethodHandle invoke target the call |
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1284 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1285 // leaving the stack in a state unknown to either caller or callee |
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1286 // TODO detune for now but we might need it again |
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1287 // assert(!callee_method->is_compiled_lambda_form() || |
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1288 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
1295 | 1289 |
0 | 1290 // Compute entry points. This might require generation of C2I converter |
1291 // frames, so we cannot be holding any locks here. Furthermore, the | |
1292 // computation of the entry points is independent of patching the call. We | |
1293 // always return the entry-point, but we only patch the stub if the call has | |
1294 // not been deoptimized. Return values: For a virtual call this is an | |
1295 // (cached_oop, destination address) pair. For a static call/optimized | |
1296 // virtual this is just a destination address. | |
1297 | |
1298 StaticCallInfo static_call_info; | |
1299 CompiledICInfo virtual_call_info; | |
1300 | |
1301 // Make sure the callee nmethod does not get deoptimized and removed before | |
1302 // we are done patching the code. | |
1295 | 1303 nmethod* callee_nm = callee_method->code(); |
14212 | 1304 if (callee_nm != NULL && !callee_nm->is_in_use()) { |
1305 // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded. | |
1306 callee_nm = NULL; | |
1307 } | |
1295 | 1308 nmethodLocker nl_callee(callee_nm); |
0 | 1309 #ifdef ASSERT |
1295 | 1310 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
0 | 1311 #endif |
1312 | |
1313 if (is_virtual) { | |
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1314 assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check"); |
0 | 1315 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); |
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1316 KlassHandle h_klass(THREAD, invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass()); |
0 | 1317 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, |
1318 is_optimized, static_bound, virtual_call_info, | |
1319 CHECK_(methodHandle())); | |
1320 } else { | |
1321 // static call | |
1322 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
1323 } | |
1324 | |
1325 // grab lock, check for deoptimization and potentially patch caller | |
1326 { | |
1327 MutexLocker ml_patch(CompiledIC_lock); | |
1328 | |
14212 | 1329 // Lock blocks for safepoint during which both nmethods can change state. |
1330 | |
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1331 // Now that we are ready to patch if the Method* was redefined then |
0 | 1332 // don't update call site and let the caller retry. |
14212 | 1333 // Don't update call site if caller nmethod has been made non-entrant |
1334 // as it is a waste of time. | |
1335 // Don't update call site if callee nmethod was unloaded or deoptimized. | |
1336 // Don't update call site if callee nmethod was replaced by an other nmethod | |
1337 // which may happen when multiply alive nmethod (tiered compilation) | |
1338 // will be supported. | |
1339 if (!callee_method->is_old() && caller_nm->is_in_use() && | |
1340 (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) { | |
0 | 1341 #ifdef ASSERT |
1342 // We must not try to patch to jump to an already unloaded method. | |
1343 if (dest_entry_point != 0) { | |
14212 | 1344 CodeBlob* cb = CodeCache::find_blob(dest_entry_point); |
1345 assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm), | |
1346 "should not call unloaded nmethod"); | |
0 | 1347 } |
1348 #endif | |
1349 if (is_virtual) { | |
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1350 nmethod* nm = callee_nm; |
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1351 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1352 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
0 | 1353 if (inline_cache->is_clean()) { |
1354 inline_cache->set_to_monomorphic(virtual_call_info); | |
1355 } | |
1356 } else { | |
1357 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
1358 if (ssc->is_clean()) ssc->set(static_call_info); | |
1359 } | |
1360 } | |
1361 | |
1362 } // unlock CompiledIC_lock | |
1363 | |
1364 return callee_method; | |
1365 } | |
1366 | |
1367 | |
1368 // Inline caches exist only in compiled code | |
1369 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
1370 #ifdef ASSERT | |
1371 RegisterMap reg_map(thread, false); | |
1372 frame stub_frame = thread->last_frame(); | |
1373 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1374 frame caller_frame = stub_frame.sender(®_map); | |
1375 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
1376 #endif /* ASSERT */ | |
1377 | |
1378 methodHandle callee_method; | |
1379 JRT_BLOCK | |
1380 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1381 // Return Method* through TLS |
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1382 thread->set_vm_result_2(callee_method()); |
0 | 1383 JRT_BLOCK_END |
1384 // return compiled code entry point after potential safepoints | |
1385 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1386 return callee_method->verified_code_entry(); | |
1387 JRT_END | |
1388 | |
1389 | |
1390 // Handle call site that has been made non-entrant | |
1391 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
1392 // 6243940 We might end up in here if the callee is deoptimized | |
1393 // as we race to call it. We don't want to take a safepoint if | |
1394 // the caller was interpreted because the caller frame will look | |
1395 // interpreted to the stack walkers and arguments are now | |
1396 // "compiled" so it is much better to make this transition | |
1397 // invisible to the stack walking code. The i2c path will | |
1398 // place the callee method in the callee_target. It is stashed | |
1399 // there because if we try and find the callee by normal means a | |
1400 // safepoint is possible and have trouble gc'ing the compiled args. | |
1401 RegisterMap reg_map(thread, false); | |
1402 frame stub_frame = thread->last_frame(); | |
1403 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1404 frame caller_frame = stub_frame.sender(®_map); | |
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1405 |
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1406 if (caller_frame.is_interpreted_frame() || |
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1407 caller_frame.is_entry_frame()) { |
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1408 Method* callee = thread->callee_target(); |
0 | 1409 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1410 thread->set_vm_result_2(callee); |
0 | 1411 thread->set_callee_target(NULL); |
1412 return callee->get_c2i_entry(); | |
1413 } | |
1414 | |
1415 // Must be compiled to compiled path which is safe to stackwalk | |
1416 methodHandle callee_method; | |
1417 JRT_BLOCK | |
1418 // Force resolving of caller (if we called from compiled frame) | |
1419 callee_method = SharedRuntime::reresolve_call_site(thread, 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 | |
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1427 // Handle abstract method call |
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1428 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_abstract(JavaThread* thread)) |
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1429 return StubRoutines::throw_AbstractMethodError_entry(); |
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1430 JRT_END |
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1431 |
0 | 1432 |
1433 // resolve a static call and patch code | |
1434 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
1435 methodHandle callee_method; | |
1436 JRT_BLOCK | |
1437 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1438 thread->set_vm_result_2(callee_method()); |
0 | 1439 JRT_BLOCK_END |
1440 // return compiled code entry point after potential safepoints | |
1441 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1442 return callee_method->verified_code_entry(); | |
1443 JRT_END | |
1444 | |
1445 | |
1446 // resolve virtual call and update inline cache to monomorphic | |
1447 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
1448 methodHandle callee_method; | |
1449 JRT_BLOCK | |
1450 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1451 thread->set_vm_result_2(callee_method()); |
0 | 1452 JRT_BLOCK_END |
1453 // return compiled code entry point after potential safepoints | |
1454 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1455 return callee_method->verified_code_entry(); | |
1456 JRT_END | |
1457 | |
1458 | |
1459 // Resolve a virtual call that can be statically bound (e.g., always | |
1460 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
1461 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
1462 methodHandle callee_method; | |
1463 JRT_BLOCK | |
1464 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1465 thread->set_vm_result_2(callee_method()); |
0 | 1466 JRT_BLOCK_END |
1467 // return compiled code entry point after potential safepoints | |
1468 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1469 return callee_method->verified_code_entry(); | |
1470 JRT_END | |
1471 | |
1472 | |
1473 | |
1474 | |
1475 | |
1476 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
1477 ResourceMark rm(thread); | |
1478 CallInfo call_info; | |
1479 Bytecodes::Code bc; | |
1480 | |
1481 // receiver is NULL for static calls. An exception is thrown for NULL | |
1482 // receivers for non-static calls | |
1483 Handle receiver = find_callee_info(thread, bc, call_info, | |
1484 CHECK_(methodHandle())); | |
1485 // Compiler1 can produce virtual call sites that can actually be statically bound | |
1486 // If we fell thru to below we would think that the site was going megamorphic | |
1487 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
1488 // we'd try and do a vtable dispatch however methods that can be statically bound | |
1489 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
1490 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
1491 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
1492 // never to miss again. I don't believe C2 will produce code like this but if it | |
1493 // did this would still be the correct thing to do for it too, hence no ifdef. | |
1494 // | |
1495 if (call_info.resolved_method()->can_be_statically_bound()) { | |
1496 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
1497 if (TraceCallFixup) { | |
1498 RegisterMap reg_map(thread, false); | |
1499 frame caller_frame = thread->last_frame().sender(®_map); | |
1500 ResourceMark rm(thread); | |
1501 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
1502 callee_method->print_short_name(tty); | |
1503 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
1504 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1505 } | |
1506 return callee_method; | |
1507 } | |
1508 | |
1509 methodHandle callee_method = call_info.selected_method(); | |
1510 | |
1511 bool should_be_mono = false; | |
1512 | |
1513 #ifndef PRODUCT | |
1514 Atomic::inc(&_ic_miss_ctr); | |
1515 | |
1516 // Statistics & Tracing | |
1517 if (TraceCallFixup) { | |
1518 ResourceMark rm(thread); | |
1519 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
1520 callee_method->print_short_name(tty); | |
1521 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1522 } | |
1523 | |
1524 if (ICMissHistogram) { | |
1525 MutexLocker m(VMStatistic_lock); | |
1526 RegisterMap reg_map(thread, false); | |
1527 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
1528 // produce statistics under the lock | |
1529 trace_ic_miss(f.pc()); | |
1530 } | |
1531 #endif | |
1532 | |
1533 // install an event collector so that when a vtable stub is created the | |
1534 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
1535 // event can't be posted when the stub is created as locks are held | |
1536 // - instead the event will be deferred until the event collector goes | |
1537 // out of scope. | |
1538 JvmtiDynamicCodeEventCollector event_collector; | |
1539 | |
1540 // Update inline cache to megamorphic. Skip update if caller has been | |
1541 // made non-entrant or we are called from interpreted. | |
1542 { MutexLocker ml_patch (CompiledIC_lock); | |
1543 RegisterMap reg_map(thread, false); | |
1544 frame caller_frame = thread->last_frame().sender(®_map); | |
1545 CodeBlob* cb = caller_frame.cb(); | |
1546 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
1547 // Not a non-entrant nmethod, so find inline_cache | |
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1548 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
0 | 1549 bool should_be_mono = false; |
1550 if (inline_cache->is_optimized()) { | |
1551 if (TraceCallFixup) { | |
1552 ResourceMark rm(thread); | |
1553 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
1554 callee_method->print_short_name(tty); | |
1555 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1556 } | |
1557 should_be_mono = true; | |
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1558 } else if (inline_cache->is_icholder_call()) { |
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1559 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1560 if ( ic_oop != NULL) { |
0 | 1561 |
1562 if (receiver()->klass() == ic_oop->holder_klass()) { | |
1563 // This isn't a real miss. We must have seen that compiled code | |
1564 // is now available and we want the call site converted to a | |
1565 // monomorphic compiled call site. | |
1566 // We can't assert for callee_method->code() != NULL because it | |
1567 // could have been deoptimized in the meantime | |
1568 if (TraceCallFixup) { | |
1569 ResourceMark rm(thread); | |
1570 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
1571 callee_method->print_short_name(tty); | |
1572 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1573 } | |
1574 should_be_mono = true; | |
1575 } | |
1576 } | |
1577 } | |
1578 | |
1579 if (should_be_mono) { | |
1580 | |
1581 // We have a path that was monomorphic but was going interpreted | |
1582 // and now we have (or had) a compiled entry. We correct the IC | |
1583 // by using a new icBuffer. | |
1584 CompiledICInfo info; | |
1585 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
1586 inline_cache->compute_monomorphic_entry(callee_method, | |
1587 receiver_klass, | |
1588 inline_cache->is_optimized(), | |
1589 false, | |
1590 info, CHECK_(methodHandle())); | |
1591 inline_cache->set_to_monomorphic(info); | |
1592 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
12294 | 1593 // Potential change to megamorphic |
1594 bool successful = inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
1595 if (!successful) { | |
1596 inline_cache->set_to_clean(); | |
1597 } | |
0 | 1598 } else { |
1599 // Either clean or megamorphic | |
1600 } | |
1601 } | |
1602 } // Release CompiledIC_lock | |
1603 | |
1604 return callee_method; | |
1605 } | |
1606 | |
1607 // | |
1608 // Resets a call-site in compiled code so it will get resolved again. | |
1609 // This routines handles both virtual call sites, optimized virtual call | |
1610 // sites, and static call sites. Typically used to change a call sites | |
1611 // destination from compiled to interpreted. | |
1612 // | |
1613 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
1614 ResourceMark rm(thread); | |
1615 RegisterMap reg_map(thread, false); | |
1616 frame stub_frame = thread->last_frame(); | |
1617 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
1618 frame caller = stub_frame.sender(®_map); | |
1619 | |
1620 // Do nothing if the frame isn't a live compiled frame. | |
1621 // nmethod could be deoptimized by the time we get here | |
1622 // so no update to the caller is needed. | |
1623 | |
1624 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
1625 | |
1626 address pc = caller.pc(); | |
1627 | |
1628 // Default call_addr is the location of the "basic" call. | |
1629 // Determine the address of the call we a reresolving. With | |
1630 // Inline Caches we will always find a recognizable call. | |
1631 // With Inline Caches disabled we may or may not find a | |
1632 // recognizable call. We will always find a call for static | |
1633 // calls and for optimized virtual calls. For vanilla virtual | |
1634 // calls it depends on the state of the UseInlineCaches switch. | |
1635 // | |
1636 // With Inline Caches disabled we can get here for a virtual call | |
1637 // for two reasons: | |
1638 // 1 - calling an abstract method. The vtable for abstract methods | |
1639 // will run us thru handle_wrong_method and we will eventually | |
1640 // end up in the interpreter to throw the ame. | |
1641 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
1642 // call and between the time we fetch the entry address and | |
1643 // we jump to it the target gets deoptimized. Similar to 1 | |
1644 // we will wind up in the interprter (thru a c2i with c2). | |
1645 // | |
1646 address call_addr = NULL; | |
1647 { | |
1648 // Get call instruction under lock because another thread may be | |
1649 // busy patching it. | |
1650 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1651 // Location of call instruction | |
1652 if (NativeCall::is_call_before(pc)) { | |
1653 NativeCall *ncall = nativeCall_before(pc); | |
1654 call_addr = ncall->instruction_address(); | |
1655 } | |
1656 } | |
1657 | |
1658 // Check for static or virtual call | |
1659 bool is_static_call = false; | |
1660 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
1661 // Make sure nmethod doesn't get deoptimized and removed until | |
1662 // this is done with it. | |
1663 // CLEANUP - with lazy deopt shouldn't need this lock | |
1664 nmethodLocker nmlock(caller_nm); | |
1665 | |
1666 if (call_addr != NULL) { | |
1667 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
1668 int ret = iter.next(); // Get item | |
1669 if (ret) { | |
1670 assert(iter.addr() == call_addr, "must find call"); | |
1671 if (iter.type() == relocInfo::static_call_type) { | |
1672 is_static_call = true; | |
1673 } else { | |
1674 assert(iter.type() == relocInfo::virtual_call_type || | |
1675 iter.type() == relocInfo::opt_virtual_call_type | |
1676 , "unexpected relocInfo. type"); | |
1677 } | |
1678 } else { | |
1679 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
1680 } | |
1681 | |
1682 // Cleaning the inline cache will force a new resolve. This is more robust | |
1683 // than directly setting it to the new destination, since resolving of calls | |
1684 // is always done through the same code path. (experience shows that it | |
1685 // leads to very hard to track down bugs, if an inline cache gets updated | |
1686 // to a wrong method). It should not be performance critical, since the | |
1687 // resolve is only done once. | |
1688 | |
1689 MutexLocker ml(CompiledIC_lock); | |
1690 // | |
1691 // We do not patch the call site if the nmethod has been made non-entrant | |
1692 // as it is a waste of time | |
1693 // | |
1694 if (caller_nm->is_in_use()) { | |
1695 if (is_static_call) { | |
1696 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
1697 ssc->set_to_clean(); | |
1698 } else { | |
1699 // compiled, dispatched call (which used to call an interpreted method) | |
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1700 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
0 | 1701 inline_cache->set_to_clean(); |
1702 } | |
1703 } | |
1704 } | |
1705 | |
1706 } | |
1707 | |
1708 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
1709 | |
1710 | |
1711 #ifndef PRODUCT | |
1712 Atomic::inc(&_wrong_method_ctr); | |
1713 | |
1714 if (TraceCallFixup) { | |
1715 ResourceMark rm(thread); | |
1716 tty->print("handle_wrong_method reresolving call to"); | |
1717 callee_method->print_short_name(tty); | |
1718 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1719 } | |
1720 #endif | |
1721 | |
1722 return callee_method; | |
1723 } | |
1724 | |
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1725 #ifdef ASSERT |
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1726 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1727 const BasicType* sig_bt, |
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1728 const VMRegPair* regs) { |
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1729 ResourceMark rm; |
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1730 const int total_args_passed = method->size_of_parameters(); |
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1731 const VMRegPair* regs_with_member_name = regs; |
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1732 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1733 |
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1734 const int member_arg_pos = total_args_passed - 1; |
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1735 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1736 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1737 |
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1738 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1739 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1740 |
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1741 for (int i = 0; i < member_arg_pos; i++) { |
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1742 VMReg a = regs_with_member_name[i].first(); |
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1743 VMReg b = regs_without_member_name[i].first(); |
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1744 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1745 } |
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1746 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1747 } |
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1748 #endif |
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1749 |
0 | 1750 // --------------------------------------------------------------------------- |
1751 // We are calling the interpreter via a c2i. Normally this would mean that | |
1752 // we were called by a compiled method. However we could have lost a race | |
1753 // where we went int -> i2c -> c2i and so the caller could in fact be | |
1205 | 1754 // interpreted. If the caller is compiled we attempt to patch the caller |
0 | 1755 // so he no longer calls into the interpreter. |
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1756 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1757 Method* moop(method); |
0 | 1758 |
1759 address entry_point = moop->from_compiled_entry(); | |
1760 | |
1761 // It's possible that deoptimization can occur at a call site which hasn't | |
1762 // been resolved yet, in which case this function will be called from | |
1763 // an nmethod that has been patched for deopt and we can ignore the | |
1764 // request for a fixup. | |
1765 // Also it is possible that we lost a race in that from_compiled_entry | |
1766 // is now back to the i2c in that case we don't need to patch and if | |
1767 // we did we'd leap into space because the callsite needs to use | |
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1768 // "to interpreter" stub in order to load up the Method*. Don't |
0 | 1769 // ask me how I know this... |
1770 | |
1771 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
1205 | 1772 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
1773 return; | |
1774 } | |
1775 | |
1776 // The check above makes sure this is a nmethod. | |
1777 nmethod* nm = cb->as_nmethod_or_null(); | |
1778 assert(nm, "must be"); | |
1779 | |
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1780 // Get the return PC for the passed caller PC. |
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1781 address return_pc = caller_pc + frame::pc_return_offset; |
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1782 |
0 | 1783 // There is a benign race here. We could be attempting to patch to a compiled |
1784 // entry point at the same time the callee is being deoptimized. If that is | |
1785 // the case then entry_point may in fact point to a c2i and we'd patch the | |
1786 // call site with the same old data. clear_code will set code() to NULL | |
1787 // at the end of it. If we happen to see that NULL then we can skip trying | |
1788 // to patch. If we hit the window where the callee has a c2i in the | |
1789 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
1790 // and patch the code with the same old data. Asi es la vida. | |
1791 | |
1792 if (moop->code() == NULL) return; | |
1793 | |
1205 | 1794 if (nm->is_in_use()) { |
0 | 1795 |
1796 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
1797 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1798 if (NativeCall::is_call_before(return_pc)) { |
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1799 NativeCall *call = nativeCall_before(return_pc); |
0 | 1800 // |
1801 // bug 6281185. We might get here after resolving a call site to a vanilla | |
1802 // virtual call. Because the resolvee uses the verified entry it may then | |
1803 // see compiled code and attempt to patch the site by calling us. This would | |
1804 // then incorrectly convert the call site to optimized and its downhill from | |
1805 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
1806 // just made a call site that could be megamorphic into a monomorphic site | |
1807 // for the rest of its life! Just another racing bug in the life of | |
1808 // fixup_callers_callsite ... | |
1809 // | |
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1810 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
0 | 1811 iter.next(); |
1812 assert(iter.has_current(), "must have a reloc at java call site"); | |
1813 relocInfo::relocType typ = iter.reloc()->type(); | |
1814 if ( typ != relocInfo::static_call_type && | |
1815 typ != relocInfo::opt_virtual_call_type && | |
1816 typ != relocInfo::static_stub_type) { | |
1817 return; | |
1818 } | |
1819 address destination = call->destination(); | |
1820 if (destination != entry_point) { | |
1821 CodeBlob* callee = CodeCache::find_blob(destination); | |
1822 // callee == cb seems weird. It means calling interpreter thru stub. | |
1823 if (callee == cb || callee->is_adapter_blob()) { | |
1824 // static call or optimized virtual | |
1825 if (TraceCallFixup) { | |
1204 | 1826 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1827 moop->print_short_name(tty); |
1828 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1829 } | |
1830 call->set_destination_mt_safe(entry_point); | |
1831 } else { | |
1832 if (TraceCallFixup) { | |
1833 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
1834 moop->print_short_name(tty); | |
1835 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1836 } | |
1837 // assert is too strong could also be resolve destinations. | |
1838 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
1839 } | |
1840 } else { | |
1841 if (TraceCallFixup) { | |
1204 | 1842 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1843 moop->print_short_name(tty); |
1844 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1845 } | |
1846 } | |
1847 } | |
1848 } | |
1849 IRT_END | |
1850 | |
1851 | |
1852 // same as JVM_Arraycopy, but called directly from compiled code | |
1853 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
1854 oopDesc* dest, jint dest_pos, | |
1855 jint length, | |
1856 JavaThread* thread)) { | |
1857 #ifndef PRODUCT | |
1858 _slow_array_copy_ctr++; | |
1859 #endif | |
1860 // Check if we have null pointers | |
1861 if (src == NULL || dest == NULL) { | |
1862 THROW(vmSymbols::java_lang_NullPointerException()); | |
1863 } | |
1864 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
1865 // even though the copy_array API also performs dynamic checks to ensure | |
1866 // that src and dest are truly arrays (and are conformable). | |
1867 // The copy_array mechanism is awkward and could be removed, but | |
1868 // the compilers don't call this function except as a last resort, | |
1869 // so it probably doesn't matter. | |
6983 | 1870 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
0 | 1871 (arrayOopDesc*)dest, dest_pos, |
1872 length, thread); | |
1873 } | |
1874 JRT_END | |
1875 | |
1876 char* SharedRuntime::generate_class_cast_message( | |
1877 JavaThread* thread, const char* objName) { | |
1878 | |
1879 // Get target class name from the checkcast instruction | |
1880 vframeStream vfst(thread, true); | |
1881 assert(!vfst.at_end(), "Java frame must exist"); | |
2142 | 1882 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
6983 | 1883 Klass* targetKlass = vfst.method()->constants()->klass_at( |
1884 cc.index(), thread); | |
0 | 1885 return generate_class_cast_message(objName, targetKlass->external_name()); |
1886 } | |
1887 | |
1888 char* SharedRuntime::generate_class_cast_message( | |
710 | 1889 const char* objName, const char* targetKlassName, const char* desc) { |
0 | 1890 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
1891 | |
53 | 1892 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 1893 if (NULL == message) { |
53 | 1894 // Shouldn't happen, but don't cause even more problems if it does |
0 | 1895 message = const_cast<char*>(objName); |
1896 } else { | |
1897 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
1898 } | |
1899 return message; | |
1900 } | |
1901 | |
1902 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
1903 (void) JavaThread::current()->reguard_stack(); | |
1904 JRT_END | |
1905 | |
1906 | |
1907 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
1908 #ifndef PRODUCT | |
1909 int SharedRuntime::_monitor_enter_ctr=0; | |
1910 #endif | |
1911 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
1912 oop obj(_obj); | |
1913 #ifndef PRODUCT | |
1914 _monitor_enter_ctr++; // monitor enter slow | |
1915 #endif | |
1916 if (PrintBiasedLockingStatistics) { | |
1917 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
1918 } | |
1919 Handle h_obj(THREAD, obj); | |
1920 if (UseBiasedLocking) { | |
1921 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
1922 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
1923 } else { | |
1924 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
1925 } | |
1926 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
1927 JRT_END | |
1928 | |
1929 #ifndef PRODUCT | |
1930 int SharedRuntime::_monitor_exit_ctr=0; | |
1931 #endif | |
1932 // Handles the uncommon cases of monitor unlocking in compiled code | |
1933 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
1934 oop obj(_obj); | |
1935 #ifndef PRODUCT | |
1936 _monitor_exit_ctr++; // monitor exit slow | |
1937 #endif | |
1938 Thread* THREAD = JavaThread::current(); | |
1939 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
1940 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
1941 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
1942 #undef MIGHT_HAVE_PENDING | |
1943 #ifdef MIGHT_HAVE_PENDING | |
1944 // Save and restore any pending_exception around the exception mark. | |
1945 // While the slow_exit must not throw an exception, we could come into | |
1946 // this routine with one set. | |
1947 oop pending_excep = NULL; | |
1948 const char* pending_file; | |
1949 int pending_line; | |
1950 if (HAS_PENDING_EXCEPTION) { | |
1951 pending_excep = PENDING_EXCEPTION; | |
1952 pending_file = THREAD->exception_file(); | |
1953 pending_line = THREAD->exception_line(); | |
1954 CLEAR_PENDING_EXCEPTION; | |
1955 } | |
1956 #endif /* MIGHT_HAVE_PENDING */ | |
1957 | |
1958 { | |
1959 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
1960 EXCEPTION_MARK; | |
1961 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
1962 } | |
1963 | |
1964 #ifdef MIGHT_HAVE_PENDING | |
1965 if (pending_excep != NULL) { | |
1966 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
1967 } | |
1968 #endif /* MIGHT_HAVE_PENDING */ | |
1969 JRT_END | |
1970 | |
1971 #ifndef PRODUCT | |
1972 | |
1973 void SharedRuntime::print_statistics() { | |
1974 ttyLocker ttyl; | |
1975 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
1976 | |
1977 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
1978 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
1979 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
1980 | |
1981 SharedRuntime::print_ic_miss_histogram(); | |
1982 | |
1983 if (CountRemovableExceptions) { | |
1984 if (_nof_removable_exceptions > 0) { | |
1985 Unimplemented(); // this counter is not yet incremented | |
1986 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
1987 } | |
1988 } | |
1989 | |
1990 // Dump the JRT_ENTRY counters | |
1991 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
1992 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
1993 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
1994 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
1995 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
1996 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
1997 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
1998 | |
1999 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
2000 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
2001 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
2002 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
2003 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
2004 | |
2005 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
2006 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
2007 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
2008 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
2009 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
2010 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
2011 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
2012 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
2013 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
2014 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
2015 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
2016 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
2017 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
2018 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
2019 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
2020 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
2021 | |
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2022 AdapterHandlerLibrary::print_statistics(); |
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2023 |
0 | 2024 if (xtty != NULL) xtty->tail("statistics"); |
2025 } | |
2026 | |
2027 inline double percent(int x, int y) { | |
2028 return 100.0 * x / MAX2(y, 1); | |
2029 } | |
2030 | |
2031 class MethodArityHistogram { | |
2032 public: | |
2033 enum { MAX_ARITY = 256 }; | |
2034 private: | |
2035 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
2036 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
2037 static int _max_arity; // max. arity seen | |
2038 static int _max_size; // max. arg size seen | |
2039 | |
2040 static void add_method_to_histogram(nmethod* nm) { | |
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2041 Method* m = nm->method(); |
0 | 2042 ArgumentCount args(m->signature()); |
2043 int arity = args.size() + (m->is_static() ? 0 : 1); | |
2044 int argsize = m->size_of_parameters(); | |
2045 arity = MIN2(arity, MAX_ARITY-1); | |
2046 argsize = MIN2(argsize, MAX_ARITY-1); | |
2047 int count = nm->method()->compiled_invocation_count(); | |
2048 _arity_histogram[arity] += count; | |
2049 _size_histogram[argsize] += count; | |
2050 _max_arity = MAX2(_max_arity, arity); | |
2051 _max_size = MAX2(_max_size, argsize); | |
2052 } | |
2053 | |
2054 void print_histogram_helper(int n, int* histo, const char* name) { | |
2055 const int N = MIN2(5, n); | |
2056 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2057 double sum = 0; | |
2058 double weighted_sum = 0; | |
2059 int i; | |
2060 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
2061 double rest = sum; | |
2062 double percent = sum / 100; | |
2063 for (i = 0; i <= N; i++) { | |
2064 rest -= histo[i]; | |
2065 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
2066 } | |
2067 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
2068 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
2069 } | |
2070 | |
2071 void print_histogram() { | |
2072 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2073 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
2074 tty->print_cr("\nSame for parameter size (in words):"); | |
2075 print_histogram_helper(_max_size, _size_histogram, "size"); | |
2076 tty->cr(); | |
2077 } | |
2078 | |
2079 public: | |
2080 MethodArityHistogram() { | |
2081 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
2082 _max_arity = _max_size = 0; | |
2083 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
2084 CodeCache::nmethods_do(add_method_to_histogram); | |
2085 print_histogram(); | |
2086 } | |
2087 }; | |
2088 | |
2089 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
2090 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
2091 int MethodArityHistogram::_max_arity; | |
2092 int MethodArityHistogram::_max_size; | |
2093 | |
2094 void SharedRuntime::print_call_statistics(int comp_total) { | |
2095 tty->print_cr("Calls from compiled code:"); | |
2096 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
2097 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
2098 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
2099 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
2100 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
2101 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
2102 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
2103 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
2104 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
2105 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
2106 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
2107 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
2108 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
2109 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
2110 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
2111 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
2112 tty->cr(); | |
2113 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
2114 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
2115 tty->print_cr(" %% in nested categories are relative to their category"); | |
2116 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
2117 tty->cr(); | |
2118 | |
2119 MethodArityHistogram h; | |
2120 } | |
2121 #endif | |
2122 | |
2123 | |
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2124 // A simple wrapper class around the calling convention information |
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2125 // that allows sharing of adapters for the same calling convention. |
6197 | 2126 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2127 private: |
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2128 enum { |
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2129 _basic_type_bits = 4, |
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2130 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2131 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2132 _compact_int_count = 3 |
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2133 }; |
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2134 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2135 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2136 |
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2137 union { |
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2138 int _compact[_compact_int_count]; |
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2139 int* _fingerprint; |
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2140 } _value; |
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2141 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2142 // Otherwise _value._fingerprint is the array. |
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2143 |
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2144 // Remap BasicTypes that are handled equivalently by the adapters. |
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2145 // These are correct for the current system but someday it might be |
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2146 // necessary to make this mapping platform dependent. |
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2147 static int adapter_encoding(BasicType in) { |
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2148 switch(in) { |
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2149 case T_BOOLEAN: |
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2150 case T_BYTE: |
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2151 case T_SHORT: |
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2152 case T_CHAR: |
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2153 // There are all promoted to T_INT in the calling convention |
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2154 return T_INT; |
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2155 |
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2156 case T_OBJECT: |
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2157 case T_ARRAY: |
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2158 // In other words, we assume that any register good enough for |
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2159 // an int or long is good enough for a managed pointer. |
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2160 #ifdef _LP64 |
1506 | 2161 return T_LONG; |
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2162 #else |
1506 | 2163 return T_INT; |
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2164 #endif |
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2165 |
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2166 case T_INT: |
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2167 case T_LONG: |
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2168 case T_FLOAT: |
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2169 case T_DOUBLE: |
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changeset
|
2170 case T_VOID: |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2171 return in; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2172 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2173 default: |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2174 ShouldNotReachHere(); |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2175 return T_CONFLICT; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2176 } |
cf0685d550f1
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never
parents:
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diff
changeset
|
2177 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2178 |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2179 public: |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2180 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
74c848d437ab
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diff
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|
2181 // The fingerprint is based on the BasicType signature encoded |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
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parents:
3451
diff
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|
2182 // into an array of ints with eight entries per int. |
1207
74c848d437ab
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diff
changeset
|
2183 int* ptr; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2184 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2185 if (len <= _compact_int_count) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2186 assert(_compact_int_count == 3, "else change next line"); |
1207
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diff
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|
2187 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
74c848d437ab
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parents:
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diff
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|
2188 // Storing the signature encoded as signed chars hits about 98% |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2189 // of the time. |
74c848d437ab
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parents:
1205
diff
changeset
|
2190 _length = -len; |
74c848d437ab
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parents:
1205
diff
changeset
|
2191 ptr = _value._compact; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2192 } else { |
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diff
changeset
|
2193 _length = len; |
6197 | 2194 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2195 ptr = _value._fingerprint; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2196 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2197 |
3841
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diff
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|
2198 // Now pack the BasicTypes with 8 per int |
1207
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diff
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|
2199 int sig_index = 0; |
74c848d437ab
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parents:
1205
diff
changeset
|
2200 for (int index = 0; index < len; index++) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2201 int value = 0; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2202 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2203 int bt = ((sig_index < total_args_passed) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2204 ? adapter_encoding(sig_bt[sig_index++]) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2205 : 0); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2206 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2207 value = (value << _basic_type_bits) | bt; |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2208 } |
74c848d437ab
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parents:
1205
diff
changeset
|
2209 ptr[index] = value; |
74c848d437ab
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parents:
1205
diff
changeset
|
2210 } |
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
|
2211 } |
cf0685d550f1
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never
parents:
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diff
changeset
|
2212 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2213 ~AdapterFingerPrint() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2214 if (_length > 0) { |
6197 | 2215 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
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
|
2216 } |
cf0685d550f1
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never
parents:
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diff
changeset
|
2217 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2218 |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2219 int value(int index) { |
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
|
2220 if (_length < 0) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2221 return _value._compact[index]; |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2222 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2223 return _value._fingerprint[index]; |
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
never
parents:
1142
diff
changeset
|
2225 int length() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2226 if (_length < 0) return -_length; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2227 return _length; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2228 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2229 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2230 bool is_compact() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2231 return _length <= 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2232 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2233 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2234 unsigned int compute_hash() { |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2235 int hash = 0; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2236 for (int i = 0; i < length(); i++) { |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2237 int v = value(i); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2238 hash = (hash << 8) ^ v ^ (hash >> 5); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2239 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2240 return (unsigned int)hash; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2241 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2242 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2243 const char* as_string() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2244 stringStream st; |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2245 st.print("0x"); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2246 for (int i = 0; i < length(); i++) { |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2247 st.print("%08x", value(i)); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2248 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2249 return st.as_string(); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2250 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2251 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2252 bool equals(AdapterFingerPrint* other) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2253 if (other->_length != _length) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2254 return false; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2255 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2256 if (_length < 0) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2257 assert(_compact_int_count == 3, "else change next line"); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2258 return _value._compact[0] == other->_value._compact[0] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2259 _value._compact[1] == other->_value._compact[1] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2260 _value._compact[2] == other->_value._compact[2]; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2261 } else { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2262 for (int i = 0; i < _length; i++) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2263 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2264 return false; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2265 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2266 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2267 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2268 return true; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2269 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2270 }; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2271 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2272 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2273 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
6197 | 2274 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2275 friend class AdapterHandlerTableIterator; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2276 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2277 private: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2278 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2279 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2280 static int _lookups; // number of calls to lookup |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2281 static int _buckets; // number of buckets checked |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2282 static int _equals; // number of buckets checked with matching hash |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2283 static int _hits; // number of successful lookups |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2284 static int _compact; // number of equals calls with compact signature |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2285 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2286 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2287 AdapterHandlerEntry* bucket(int i) { |
6197 | 2288 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2289 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2290 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2291 public: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2292 AdapterHandlerTable() |
6197 | 2293 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2294 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2295 // 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
|
2296 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
6197 | 2297 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
|
2298 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:
1142
diff
changeset
|
2299 return entry; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2300 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2301 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2302 // Insert an entry into the table |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2303 void add(AdapterHandlerEntry* entry) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2304 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
|
2305 add_entry(index, entry); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2306 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2307 |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
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2308 void free_entry(AdapterHandlerEntry* entry) { |
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2309 entry->deallocate(); |
6197 | 2310 BasicHashtable<mtCode>::free_entry(entry); |
1207
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2311 } |
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|
2312 |
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2313 // Find a entry with the same fingerprint if it exists |
1207
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2314 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
1263
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|
2315 NOT_PRODUCT(_lookups++); |
1207
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|
2316 AdapterFingerPrint fp(total_args_passed, sig_bt); |
1187
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|
2317 unsigned int hash = fp.compute_hash(); |
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|
2318 int index = hash_to_index(hash); |
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2319 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
1263
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2320 NOT_PRODUCT(_buckets++); |
1187
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2321 if (e->hash() == hash) { |
1263
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2322 NOT_PRODUCT(_equals++); |
1187
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2323 if (fp.equals(e->fingerprint())) { |
1263
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2324 #ifndef PRODUCT |
1187
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2325 if (fp.is_compact()) _compact++; |
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2326 _hits++; |
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|
2327 #endif |
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|
2328 return e; |
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|
2329 } |
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|
2330 } |
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|
2331 } |
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|
2332 return NULL; |
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|
2333 } |
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|
2334 |
1263
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|
2335 #ifndef PRODUCT |
1187
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2336 void print_statistics() { |
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|
2337 ResourceMark rm; |
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|
2338 int longest = 0; |
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2339 int empty = 0; |
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2340 int total = 0; |
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|
2341 int nonempty = 0; |
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|
2342 for (int index = 0; index < table_size(); index++) { |
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|
2343 int count = 0; |
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|
2344 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
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|
2345 count++; |
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|
2346 } |
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|
2347 if (count != 0) nonempty++; |
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|
2348 if (count == 0) empty++; |
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|
2349 if (count > longest) longest = count; |
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|
2350 total += count; |
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|
2351 } |
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2352 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
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2353 empty, longest, total, total / (double)nonempty); |
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2354 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
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2355 _lookups, _buckets, _equals, _hits, _compact); |
1263
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2356 } |
1187
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|
2357 #endif |
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|
2358 }; |
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|
2359 |
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|
2360 |
1263
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|
2361 #ifndef PRODUCT |
1187
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2362 |
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|
2363 int AdapterHandlerTable::_lookups; |
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|
2364 int AdapterHandlerTable::_buckets; |
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|
2365 int AdapterHandlerTable::_equals; |
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|
2366 int AdapterHandlerTable::_hits; |
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|
2367 int AdapterHandlerTable::_compact; |
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|
2368 |
1681
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bobv
parents:
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diff
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|
2369 #endif |
126ea7725993
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diff
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|
2370 |
1187
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|
2371 class AdapterHandlerTableIterator : public StackObj { |
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|
2372 private: |
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|
2373 AdapterHandlerTable* _table; |
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|
2374 int _index; |
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|
2375 AdapterHandlerEntry* _current; |
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|
2376 |
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|
2377 void scan() { |
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|
2378 while (_index < _table->table_size()) { |
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|
2379 AdapterHandlerEntry* a = _table->bucket(_index); |
1564 | 2380 _index++; |
1187
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2381 if (a != NULL) { |
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|
2382 _current = a; |
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|
2383 return; |
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|
2384 } |
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|
2385 } |
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|
2386 } |
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|
2387 |
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|
2388 public: |
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|
2389 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
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|
2390 scan(); |
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|
2391 } |
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|
2392 bool has_next() { |
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|
2393 return _current != NULL; |
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|
2394 } |
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|
2395 AdapterHandlerEntry* next() { |
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|
2396 if (_current != NULL) { |
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|
2397 AdapterHandlerEntry* result = _current; |
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|
2398 _current = _current->next(); |
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diff
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|
2399 if (_current == NULL) scan(); |
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|
2400 return result; |
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|
2401 } else { |
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|
2402 return NULL; |
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|
2403 } |
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|
2404 } |
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|
2405 }; |
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|
2406 |
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|
2407 |
0 | 2408 // --------------------------------------------------------------------------- |
2409 // Implementation of AdapterHandlerLibrary | |
1187
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|
2410 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
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|
2411 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
0 | 2412 const int AdapterHandlerLibrary_size = 16*K; |
742
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|
2413 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
45463a04ca27
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|
2414 |
45463a04ca27
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|
2415 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
45463a04ca27
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|
2416 // Should be called only when AdapterHandlerLibrary_lock is active. |
45463a04ca27
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|
2417 if (_buffer == NULL) // Initialize lazily |
45463a04ca27
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|
2418 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
45463a04ca27
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|
2419 return _buffer; |
45463a04ca27
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|
2420 } |
0 | 2421 |
2422 void AdapterHandlerLibrary::initialize() { | |
1187
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2423 if (_adapters != NULL) return; |
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|
2424 _adapters = new AdapterHandlerTable(); |
0 | 2425 |
2426 // Create a special handler for abstract methods. Abstract methods | |
2427 // are never compiled so an i2c entry is somewhat meaningless, but | |
13382
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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|
2428 // throw AbstractMethodError just in case. |
570aaefce624
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|
2429 // Pass wrong_method_abstract for the c2i transitions to return |
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
morris
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diff
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|
2430 // AbstractMethodError for invalid invocations. |
570aaefce624
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|
2431 address wrong_method_abstract = SharedRuntime::get_handle_wrong_method_abstract_stub(); |
1187
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|
2432 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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|
2433 StubRoutines::throw_AbstractMethodError_entry(), |
13382
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|
2434 wrong_method_abstract, wrong_method_abstract); |
0 | 2435 } |
2436 | |
1187
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|
2437 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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|
2438 address i2c_entry, |
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diff
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|
2439 address c2i_entry, |
cf0685d550f1
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|
2440 address c2i_unverified_entry) { |
cf0685d550f1
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diff
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|
2441 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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|
2442 } |
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|
2443 |
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|
2444 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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6911204: generated adapters with large signatures can fill up the code cache
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|
2445 // Use customized signature handler. Need to lock around updates to |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2446 // the AdapterHandlerTable (it is not safe for concurrent readers |
cf0685d550f1
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|
2447 // and a single writer: this could be fixed if it becomes a |
cf0685d550f1
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|
2448 // problem). |
0 | 2449 |
2450 // Get the address of the ic_miss handlers before we grab the | |
2451 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
2452 // was caused by the initialization of the stubs happening | |
2453 // while we held the lock and then notifying jvmti while | |
2454 // holding it. This just forces the initialization to be a little | |
2455 // earlier. | |
2456 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
2457 assert(ic_miss != NULL, "must have handler"); | |
2458 | |
1187
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|
2459 ResourceMark rm; |
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|
2460 |
1748 | 2461 NOT_PRODUCT(int insts_size); |
14909 | 2462 AdapterBlob* B = NULL; |
742
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2463 AdapterHandlerEntry* entry = NULL; |
1187
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|
2464 AdapterFingerPrint* fingerprint = NULL; |
0 | 2465 { |
2466 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2467 // make sure data structure is initialized | |
2468 initialize(); | |
2469 | |
2470 if (method->is_abstract()) { | |
1187
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|
2471 return _abstract_method_handler; |
0 | 2472 } |
2473 | |
1187
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|
2474 // Fill in the signature array, for the calling-convention call. |
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|
2475 int total_args_passed = method->size_of_parameters(); // All args on stack |
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|
2476 |
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|
2477 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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|
2478 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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|
2479 int i = 0; |
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|
2480 if (!method->is_static()) // Pass in receiver first |
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|
2481 sig_bt[i++] = T_OBJECT; |
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|
2482 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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|
2483 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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|
2484 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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|
2485 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2486 } |
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|
2487 assert(i == total_args_passed, ""); |
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|
2488 |
1207
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|
2489 // Lookup method signature's fingerprint |
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|
2490 entry = _adapters->lookup(total_args_passed, sig_bt); |
1187
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|
2491 |
1207
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|
2492 #ifdef ASSERT |
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|
2493 AdapterHandlerEntry* shared_entry = NULL; |
14909 | 2494 if (VerifyAdapterSharing && entry != NULL) { |
1207
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|
2495 shared_entry = entry; |
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|
2496 entry = NULL; |
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|
2497 } |
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|
2498 #endif |
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|
2499 |
1187
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|
2500 if (entry != NULL) { |
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diff
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|
2501 return entry; |
0 | 2502 } |
2503 | |
1207
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|
2504 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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|
2505 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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|
2506 |
1187
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|
2507 // Make a C heap allocated version of the fingerprint to store in the adapter |
1207
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|
2508 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
1187
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diff
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|
2509 |
0 | 2510 // Create I2C & C2I handlers |
14909 | 2511 |
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
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1295
diff
changeset
|
2512 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
742
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diff
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|
2513 if (buf != NULL) { |
1748 | 2514 CodeBuffer buffer(buf); |
742
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diff
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|
2515 short buffer_locs[20]; |
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diff
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|
2516 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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diff
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|
2517 sizeof(buffer_locs)/sizeof(relocInfo)); |
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diff
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|
2518 MacroAssembler _masm(&buffer); |
14909 | 2519 |
742
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diff
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|
2520 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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diff
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|
2521 total_args_passed, |
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|
2522 comp_args_on_stack, |
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|
2523 sig_bt, |
1187
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|
2524 regs, |
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diff
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|
2525 fingerprint); |
14909 | 2526 |
1207
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diff
changeset
|
2527 #ifdef ASSERT |
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diff
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|
2528 if (VerifyAdapterSharing) { |
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diff
changeset
|
2529 if (shared_entry != NULL) { |
14909 | 2530 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
2531 "code must match"); | |
1207
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diff
changeset
|
2532 // Release the one just created and return the original |
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parents:
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diff
changeset
|
2533 _adapters->free_entry(entry); |
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parents:
1205
diff
changeset
|
2534 return shared_entry; |
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diff
changeset
|
2535 } else { |
14909 | 2536 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
1207
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diff
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|
2537 } |
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parents:
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diff
changeset
|
2538 } |
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parents:
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diff
changeset
|
2539 #endif |
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diff
changeset
|
2540 |
14909 | 2541 B = AdapterBlob::create(&buffer); |
1748 | 2542 NOT_PRODUCT(insts_size = buffer.insts_size()); |
742
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diff
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|
2543 } |
14909 | 2544 if (B == NULL) { |
28 | 2545 // CodeCache is full, disable compilation |
2546 // Ought to log this but compile log is only per compile thread | |
2547 // and we're some non descript Java thread. | |
1202 | 2548 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
2549 CompileBroker::handle_full_code_cache(); | |
1187
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|
2550 return NULL; // Out of CodeCache space |
28 | 2551 } |
14909 | 2552 entry->relocate(B->content_begin()); |
0 | 2553 #ifndef PRODUCT |
2554 // debugging suppport | |
6266
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2555 if (PrintAdapterHandlers || PrintStubCode) { |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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6792
diff
changeset
|
2556 ttyLocker ttyl; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2557 entry->print_adapter_on(tty); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2558 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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1142
diff
changeset
|
2559 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2560 method->signature()->as_C_string(), insts_size); |
0 | 2561 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
6266
1d7922586cf6
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6197
diff
changeset
|
2562 if (Verbose || PrintStubCode) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2563 address first_pc = entry->base_address(); |
6796
b31471cdc53e
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kvn
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6792
diff
changeset
|
2564 if (first_pc != NULL) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2565 Disassembler::decode(first_pc, first_pc + insts_size); |
6796
b31471cdc53e
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6792
diff
changeset
|
2566 tty->cr(); |
b31471cdc53e
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6792
diff
changeset
|
2567 } |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2568 } |
0 | 2569 } |
2570 #endif | |
14909 | 2571 |
2572 _adapters->add(entry); | |
0 | 2573 } |
2574 // Outside of the lock | |
14909 | 2575 if (B != NULL) { |
0 | 2576 char blob_id[256]; |
2577 jio_snprintf(blob_id, | |
2578 sizeof(blob_id), | |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2579 "%s(%s)@" PTR_FORMAT, |
14909 | 2580 B->name(), |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2581 fingerprint->as_string(), |
14909 | 2582 B->content_begin()); |
2583 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
0 | 2584 |
2585 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
14909 | 2586 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
0 | 2587 } |
2588 } | |
1187
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6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2589 return entry; |
0 | 2590 } |
2591 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2592 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
|
2593 address base = _i2c_entry; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2594 if (base == NULL) base = _c2i_entry; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2595 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
|
2596 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
|
2597 return base; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2598 } |
1d7922586cf6
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diff
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|
2599 |
0 | 2600 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
|
2601 address old_base = base_address(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2602 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
|
2603 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
|
2604 if (_i2c_entry != NULL) |
0 | 2605 _i2c_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
|
2606 if (_c2i_entry != NULL) |
0 | 2607 _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
|
2608 if (_c2i_unverified_entry != NULL) |
0 | 2609 _c2i_unverified_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
|
2610 assert(base_address() == new_base, ""); |
0 | 2611 } |
2612 | |
1207
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|
2613 |
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diff
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|
2614 void AdapterHandlerEntry::deallocate() { |
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|
2615 delete _fingerprint; |
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changeset
|
2616 #ifdef ASSERT |
6197 | 2617 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
14909 | 2618 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig, mtCode); |
1207
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diff
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|
2619 #endif |
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diff
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|
2620 } |
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|
2621 |
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diff
changeset
|
2622 |
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1205
diff
changeset
|
2623 #ifdef ASSERT |
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diff
changeset
|
2624 // Capture the code before relocation so that it can be compared |
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diff
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|
2625 // against other versions. If the code is captured after relocation |
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diff
changeset
|
2626 // then relative instructions won't be equivalent. |
14909 | 2627 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
6197 | 2628 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
14909 | 2629 _code_length = length; |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2630 memcpy(_saved_code, buffer, length); |
14909 | 2631 _total_args_passed = total_args_passed; |
2632 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed, mtCode); | |
2633 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); | |
1207
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diff
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|
2634 } |
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diff
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|
2635 |
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|
2636 |
14909 | 2637 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
2638 if (length != _code_length) { | |
1207
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diff
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|
2639 return false; |
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1205
diff
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|
2640 } |
14909 | 2641 for (int i = 0; i < length; i++) { |
2642 if (buffer[i] != _saved_code[i]) { | |
2643 return false; | |
2644 } | |
2645 } | |
2646 return true; | |
1207
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diff
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|
2647 } |
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diff
changeset
|
2648 #endif |
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diff
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|
2649 |
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diff
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|
2650 |
14909 | 2651 // Create a native wrapper for this native method. The wrapper converts the |
2652 // java compiled calling convention to the native convention, handlizes | |
2653 // arguments, and transitions to native. On return from the native we transition | |
2654 // back to java blocking if a safepoint is in progress. | |
2655 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { | |
0 | 2656 ResourceMark rm; |
2657 nmethod* nm = NULL; | |
2658 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2659 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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|
2660 assert(method->is_method_handle_intrinsic() || |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2661 method->has_native_function(), "must have something valid to call!"); |
0 | 2662 |
2663 { | |
14909 | 2664 // perform the work while holding the lock, but perform any printing outside the lock |
0 | 2665 MutexLocker mu(AdapterHandlerLibrary_lock); |
2666 // See if somebody beat us to it | |
2667 nm = method->code(); | |
14909 | 2668 if (nm) { |
2669 return nm; | |
0 | 2670 } |
2671 | |
742
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|
2672 ResourceMark rm; |
14909 | 2673 |
742
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|
2674 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
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|
2675 if (buf != NULL) { |
1748 | 2676 CodeBuffer buffer(buf); |
742
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|
2677 double locs_buf[20]; |
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|
2678 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
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|
2679 MacroAssembler _masm(&buffer); |
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|
2680 |
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diff
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|
2681 // Fill in the signature array, for the calling-convention call. |
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2682 const int total_args_passed = method->size_of_parameters(); |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2683 |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2684 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2685 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
742
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|
2686 int i=0; |
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|
2687 if( !method->is_static() ) // Pass in receiver first |
45463a04ca27
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diff
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|
2688 sig_bt[i++] = T_OBJECT; |
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diff
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|
2689 SignatureStream ss(method->signature()); |
45463a04ca27
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diff
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|
2690 for( ; !ss.at_return_type(); ss.next()) { |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2691 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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|
2692 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
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|
2693 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2694 } |
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2695 assert(i == total_args_passed, ""); |
742
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diff
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|
2696 BasicType ret_type = ss.type(); |
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|
2697 |
6266
1d7922586cf6
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|
2698 // Now get the compiled-Java layout as input (or output) arguments. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2699 // NOTE: Stubs for compiled entry points of method handle intrinsics |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2700 // are just trampolines so the argument registers must be outgoing ones. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2701 const bool is_outgoing = method->is_method_handle_intrinsic(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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|
2702 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
742
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|
2703 |
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|
2704 // Generate the compiled-to-native wrapper code |
14909 | 2705 nm = SharedRuntime::generate_native_wrapper(&_masm, |
2706 method, | |
2707 compile_id, | |
2708 sig_bt, | |
2709 regs, | |
2710 ret_type); | |
0 | 2711 } |
14909 | 2712 } |
2713 | |
2714 // Must unlock before calling set_code | |
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2715 |
0 | 2716 // Install the generated code. |
2717 if (nm != NULL) { | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2718 if (PrintCompilation) { |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2719 ttyLocker ttyl; |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2720 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2721 } |
14909 | 2722 method->set_code(method, nm); |
0 | 2723 nm->post_compiled_method_load_event(); |
2724 } else { | |
2725 // CodeCache is full, disable compilation | |
1202 | 2726 CompileBroker::handle_full_code_cache(); |
0 | 2727 } |
14909 | 2728 return nm; |
0 | 2729 } |
2730 | |
4873
0382d2b469b2
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never
parents:
4872
diff
changeset
|
2731 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2732 assert(thread == JavaThread::current(), "must be"); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2733 // The code is about to enter a JNI lazy critical native method and |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2734 // _needs_gc is true, so if this thread is already in a critical |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2735 // section then just return, otherwise this thread should block |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2736 // until needs_gc has been cleared. |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2737 if (thread->in_critical()) { |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2738 return; |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2739 } |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2740 // Lock and unlock a critical section to give the system a chance to block |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2741 GC_locker::lock_critical(thread); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2742 GC_locker::unlock_critical(thread); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2743 JRT_END |
0382d2b469b2
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diff
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|
2744 |
116
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diff
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|
2745 #ifdef HAVE_DTRACE_H |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2746 // Create a dtrace nmethod for this method. The wrapper converts the |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2747 // java compiled calling convention to the native convention, makes a dummy call |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2748 // (actually nops for the size of the call instruction, which become a trap if |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2749 // probe is enabled). The returns to the caller. Since this all looks like a |
018d5b58dd4f
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diff
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|
2750 // leaf no thread transition is needed. |
018d5b58dd4f
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diff
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|
2751 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2752 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
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|
2753 ResourceMark rm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2754 nmethod* nm = NULL; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2755 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2756 if (PrintCompilation) { |
018d5b58dd4f
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diff
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|
2757 ttyLocker ttyl; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2758 tty->print("--- n%s "); |
018d5b58dd4f
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diff
changeset
|
2759 method->print_short_name(tty); |
018d5b58dd4f
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diff
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|
2760 if (method->is_static()) { |
018d5b58dd4f
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diff
changeset
|
2761 tty->print(" (static)"); |
018d5b58dd4f
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diff
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|
2762 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2763 tty->cr(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2764 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2765 |
018d5b58dd4f
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diff
changeset
|
2766 { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2767 // perform the work while holding the lock, but perform any printing |
018d5b58dd4f
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diff
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|
2768 // outside the lock |
018d5b58dd4f
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diff
changeset
|
2769 MutexLocker mu(AdapterHandlerLibrary_lock); |
018d5b58dd4f
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diff
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|
2770 // See if somebody beat us to it |
018d5b58dd4f
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diff
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|
2771 nm = method->code(); |
018d5b58dd4f
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diff
changeset
|
2772 if (nm) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2773 return nm; |
018d5b58dd4f
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62
diff
changeset
|
2774 } |
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|
2775 |
742
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|
2776 ResourceMark rm; |
45463a04ca27
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|
2777 |
45463a04ca27
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|
2778 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
45463a04ca27
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|
2779 if (buf != NULL) { |
1748 | 2780 CodeBuffer buffer(buf); |
742
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|
2781 // Need a few relocation entries |
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|
2782 double locs_buf[20]; |
45463a04ca27
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|
2783 buffer.insts()->initialize_shared_locs( |
116
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diff
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|
2784 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
742
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|
2785 MacroAssembler _masm(&buffer); |
116
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|
2786 |
742
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|
2787 // Generate the compiled-to-native wrapper code |
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|
2788 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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|
2789 } |
116
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|
2790 } |
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diff
changeset
|
2791 return nm; |
018d5b58dd4f
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diff
changeset
|
2792 } |
018d5b58dd4f
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diff
changeset
|
2793 |
018d5b58dd4f
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diff
changeset
|
2794 // the dtrace method needs to convert java lang string to utf8 string. |
018d5b58dd4f
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diff
changeset
|
2795 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
018d5b58dd4f
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diff
changeset
|
2796 typeArrayOop jlsValue = java_lang_String::value(src); |
018d5b58dd4f
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diff
changeset
|
2797 int jlsOffset = java_lang_String::offset(src); |
018d5b58dd4f
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62
diff
changeset
|
2798 int jlsLen = java_lang_String::length(src); |
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2799 jchar* jlsPos = (jlsLen == 0) ? NULL : |
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2800 jlsValue->char_at_addr(jlsOffset); |
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2801 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
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2802 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
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2803 } |
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2804 #endif // ndef HAVE_DTRACE_H |
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2805 |
0 | 2806 // ------------------------------------------------------------------------- |
2807 // Java-Java calling convention | |
2808 // (what you use when Java calls Java) | |
2809 | |
2810 //------------------------------name_for_receiver---------------------------------- | |
2811 // For a given signature, return the VMReg for parameter 0. | |
2812 VMReg SharedRuntime::name_for_receiver() { | |
2813 VMRegPair regs; | |
2814 BasicType sig_bt = T_OBJECT; | |
2815 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
2816 // Return argument 0 register. In the LP64 build pointers | |
2817 // take 2 registers, but the VM wants only the 'main' name. | |
2818 return regs.first(); | |
2819 } | |
2820 | |
10390 | 2821 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
0 | 2822 // This method is returning a data structure allocating as a |
2823 // ResourceObject, so do not put any ResourceMarks in here. | |
2824 char *s = sig->as_C_string(); | |
2825 int len = (int)strlen(s); | |
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2826 s++; len--; // Skip opening paren |
0 | 2827 char *t = s+len; |
2828 while( *(--t) != ')' ) ; // Find close paren | |
2829 | |
2830 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
2831 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
2832 int cnt = 0; | |
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2833 if (has_receiver) { |
0 | 2834 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
2835 } | |
2836 | |
2837 while( s < t ) { | |
2838 switch( *s++ ) { // Switch on signature character | |
2839 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
2840 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
2841 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
2842 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
2843 case 'I': sig_bt[cnt++] = T_INT; break; | |
2844 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
2845 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
2846 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
2847 case 'V': sig_bt[cnt++] = T_VOID; break; | |
2848 case 'L': // Oop | |
2849 while( *s++ != ';' ) ; // Skip signature | |
2850 sig_bt[cnt++] = T_OBJECT; | |
2851 break; | |
2852 case '[': { // Array | |
2853 do { // Skip optional size | |
2854 while( *s >= '0' && *s <= '9' ) s++; | |
2855 } while( *s++ == '[' ); // Nested arrays? | |
2856 // Skip element type | |
2857 if( s[-1] == 'L' ) | |
2858 while( *s++ != ';' ) ; // Skip signature | |
2859 sig_bt[cnt++] = T_ARRAY; | |
2860 break; | |
2861 } | |
2862 default : ShouldNotReachHere(); | |
2863 } | |
2864 } | |
10390 | 2865 |
2866 if (has_appendix) { | |
2867 sig_bt[cnt++] = T_OBJECT; | |
2868 } | |
2869 | |
0 | 2870 assert( cnt < 256, "grow table size" ); |
2871 | |
2872 int comp_args_on_stack; | |
2873 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
2874 | |
2875 // the calling convention doesn't count out_preserve_stack_slots so | |
2876 // we must add that in to get "true" stack offsets. | |
2877 | |
2878 if (comp_args_on_stack) { | |
2879 for (int i = 0; i < cnt; i++) { | |
2880 VMReg reg1 = regs[i].first(); | |
2881 if( reg1->is_stack()) { | |
2882 // Yuck | |
2883 reg1 = reg1->bias(out_preserve_stack_slots()); | |
2884 } | |
2885 VMReg reg2 = regs[i].second(); | |
2886 if( reg2->is_stack()) { | |
2887 // Yuck | |
2888 reg2 = reg2->bias(out_preserve_stack_slots()); | |
2889 } | |
2890 regs[i].set_pair(reg2, reg1); | |
2891 } | |
2892 } | |
2893 | |
2894 // results | |
2895 *arg_size = cnt; | |
2896 return regs; | |
2897 } | |
2898 | |
2899 // OSR Migration Code | |
2900 // | |
2901 // This code is used convert interpreter frames into compiled frames. It is | |
2902 // called from very start of a compiled OSR nmethod. A temp array is | |
2903 // allocated to hold the interesting bits of the interpreter frame. All | |
2904 // active locks are inflated to allow them to move. The displaced headers and | |
14909 | 2905 // active interpeter locals are copied into the temp buffer. Then we return |
0 | 2906 // back to the compiled code. The compiled code then pops the current |
2907 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
2908 // copies the interpreter locals and displaced headers where it wants. | |
2909 // Finally it calls back to free the temp buffer. | |
2910 // | |
2911 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
2912 | |
2913 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
2914 | |
2915 // | |
2916 // This code is dependent on the memory layout of the interpreter local | |
2917 // array and the monitors. On all of our platforms the layout is identical | |
2918 // so this code is shared. If some platform lays the their arrays out | |
2919 // differently then this code could move to platform specific code or | |
2920 // the code here could be modified to copy items one at a time using | |
2921 // frame accessor methods and be platform independent. | |
2922 | |
2923 frame fr = thread->last_frame(); | |
2924 assert( fr.is_interpreted_frame(), "" ); | |
2925 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
2926 | |
2927 // Figure out how many monitors are active. | |
2928 int active_monitor_count = 0; | |
2929 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
2930 kptr < fr.interpreter_frame_monitor_begin(); | |
2931 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
2932 if( kptr->obj() != NULL ) active_monitor_count++; | |
2933 } | |
2934 | |
2935 // QQQ we could place number of active monitors in the array so that compiled code | |
2936 // could double check it. | |
2937 | |
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2938 Method* moop = fr.interpreter_frame_method(); |
0 | 2939 int max_locals = moop->max_locals(); |
2940 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
2941 int buf_size_words = max_locals + active_monitor_count*2; | |
6197 | 2942 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
0 | 2943 |
2944 // Copy the locals. Order is preserved so that loading of longs works. | |
2945 // Since there's no GC I can copy the oops blindly. | |
2946 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
1506 | 2947 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
0 | 2948 (HeapWord*)&buf[0], |
2949 max_locals); | |
2950 | |
2951 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
2952 int i = max_locals; | |
2953 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
2954 kptr2 < fr.interpreter_frame_monitor_begin(); | |
2955 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
2956 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
2957 BasicLock *lock = kptr2->lock(); | |
2958 // Inflate so the displaced header becomes position-independent | |
2959 if (lock->displaced_header()->is_unlocked()) | |
2960 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
2961 // Now the displaced header is free to move | |
2962 buf[i++] = (intptr_t)lock->displaced_header(); | |
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2963 buf[i++] = cast_from_oop<intptr_t>(kptr2->obj()); |
0 | 2964 } |
2965 } | |
2966 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
2967 | |
2968 return buf; | |
2969 JRT_END | |
2970 | |
2971 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
6197 | 2972 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
0 | 2973 JRT_END |
2974 | |
2975 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
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2976 AdapterHandlerTableIterator iter(_adapters); |
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2977 while (iter.has_next()) { |
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2978 AdapterHandlerEntry* a = iter.next(); |
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2979 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
0 | 2980 } |
2981 return false; | |
2982 } | |
2983 | |
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2984 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
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2985 AdapterHandlerTableIterator iter(_adapters); |
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2986 while (iter.has_next()) { |
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2987 AdapterHandlerEntry* a = iter.next(); |
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2988 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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2989 st->print("Adapter for signature: "); |
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2990 a->print_adapter_on(tty); |
0 | 2991 return; |
2992 } | |
2993 } | |
2994 assert(false, "Should have found handler"); | |
2995 } | |
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2996 |
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2997 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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2998 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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2999 (intptr_t) this, fingerprint()->as_string(), |
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3000 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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3001 |
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3002 } |
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3003 |
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3004 #ifndef PRODUCT |
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3005 |
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3006 void AdapterHandlerLibrary::print_statistics() { |
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3007 _adapters->print_statistics(); |
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3008 } |
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3009 |
0 | 3010 #endif /* PRODUCT */ |