Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 14768:3e9a960f0da1
HSAIL: preliminary deopt support
Contributed-by: Tom Deneau <tom.deneau@amd.com>
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 26 Mar 2014 17:33:54 +0100 |
parents | d3225562f0d8 |
children | 4ca6dc0799b6 |
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 | |
130 // Implementation of SharedRuntime | |
131 | |
132 #ifndef PRODUCT | |
133 // For statistics | |
134 int SharedRuntime::_ic_miss_ctr = 0; | |
135 int SharedRuntime::_wrong_method_ctr = 0; | |
136 int SharedRuntime::_resolve_static_ctr = 0; | |
137 int SharedRuntime::_resolve_virtual_ctr = 0; | |
138 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
139 int SharedRuntime::_implicit_null_throws = 0; | |
140 int SharedRuntime::_implicit_div0_throws = 0; | |
141 int SharedRuntime::_throw_null_ctr = 0; | |
142 | |
143 int SharedRuntime::_nof_normal_calls = 0; | |
144 int SharedRuntime::_nof_optimized_calls = 0; | |
145 int SharedRuntime::_nof_inlined_calls = 0; | |
146 int SharedRuntime::_nof_megamorphic_calls = 0; | |
147 int SharedRuntime::_nof_static_calls = 0; | |
148 int SharedRuntime::_nof_inlined_static_calls = 0; | |
149 int SharedRuntime::_nof_interface_calls = 0; | |
150 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
151 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
152 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
153 int SharedRuntime::_nof_removable_exceptions = 0; | |
154 | |
155 int SharedRuntime::_new_instance_ctr=0; | |
156 int SharedRuntime::_new_array_ctr=0; | |
157 int SharedRuntime::_multi1_ctr=0; | |
158 int SharedRuntime::_multi2_ctr=0; | |
159 int SharedRuntime::_multi3_ctr=0; | |
160 int SharedRuntime::_multi4_ctr=0; | |
161 int SharedRuntime::_multi5_ctr=0; | |
162 int SharedRuntime::_mon_enter_stub_ctr=0; | |
163 int SharedRuntime::_mon_exit_stub_ctr=0; | |
164 int SharedRuntime::_mon_enter_ctr=0; | |
165 int SharedRuntime::_mon_exit_ctr=0; | |
166 int SharedRuntime::_partial_subtype_ctr=0; | |
167 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
168 int SharedRuntime::_jshort_array_copy_ctr=0; | |
169 int SharedRuntime::_jint_array_copy_ctr=0; | |
170 int SharedRuntime::_jlong_array_copy_ctr=0; | |
171 int SharedRuntime::_oop_array_copy_ctr=0; | |
172 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
173 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
174 int SharedRuntime::_generic_array_copy_ctr=0; | |
175 int SharedRuntime::_slow_array_copy_ctr=0; | |
176 int SharedRuntime::_find_handler_ctr=0; | |
177 int SharedRuntime::_rethrow_ctr=0; | |
178 | |
179 int SharedRuntime::_ICmiss_index = 0; | |
180 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
181 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
182 | |
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183 |
0 | 184 void SharedRuntime::trace_ic_miss(address at) { |
185 for (int i = 0; i < _ICmiss_index; i++) { | |
186 if (_ICmiss_at[i] == at) { | |
187 _ICmiss_count[i]++; | |
188 return; | |
189 } | |
190 } | |
191 int index = _ICmiss_index++; | |
192 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
193 _ICmiss_at[index] = at; | |
194 _ICmiss_count[index] = 1; | |
195 } | |
196 | |
197 void SharedRuntime::print_ic_miss_histogram() { | |
198 if (ICMissHistogram) { | |
199 tty->print_cr ("IC Miss Histogram:"); | |
200 int tot_misses = 0; | |
201 for (int i = 0; i < _ICmiss_index; i++) { | |
202 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
203 tot_misses += _ICmiss_count[i]; | |
204 } | |
205 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
206 } | |
207 } | |
208 #endif // PRODUCT | |
209 | |
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210 #if INCLUDE_ALL_GCS |
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211 |
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212 // G1 write-barrier pre: executed before a pointer store. |
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213 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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214 if (orig == NULL) { |
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215 assert(false, "should be optimized out"); |
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216 return; |
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217 } |
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218 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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219 // store the original value that was in the field reference |
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220 thread->satb_mark_queue().enqueue(orig); |
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221 JRT_END |
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222 |
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223 // G1 write-barrier post: executed after a pointer store. |
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224 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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225 thread->dirty_card_queue().enqueue(card_addr); |
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226 JRT_END |
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227 |
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228 #endif // INCLUDE_ALL_GCS |
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229 |
0 | 230 |
231 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
232 return x * y; | |
233 JRT_END | |
234 | |
235 | |
236 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
237 if (x == min_jlong && y == CONST64(-1)) { | |
238 return x; | |
239 } else { | |
240 return x / y; | |
241 } | |
242 JRT_END | |
243 | |
244 | |
245 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
246 if (x == min_jlong && y == CONST64(-1)) { | |
247 return 0; | |
248 } else { | |
249 return x % y; | |
250 } | |
251 JRT_END | |
252 | |
253 | |
254 const juint float_sign_mask = 0x7FFFFFFF; | |
255 const juint float_infinity = 0x7F800000; | |
256 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
257 const julong double_infinity = CONST64(0x7FF0000000000000); | |
258 | |
259 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
260 #ifdef _WIN64 | |
261 // 64-bit Windows on amd64 returns the wrong values for | |
262 // infinity operands. | |
263 union { jfloat f; juint i; } xbits, ybits; | |
264 xbits.f = x; | |
265 ybits.f = y; | |
266 // x Mod Infinity == x unless x is infinity | |
267 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
268 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
269 return x; | |
270 } | |
271 #endif | |
272 return ((jfloat)fmod((double)x,(double)y)); | |
273 JRT_END | |
274 | |
275 | |
276 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
277 #ifdef _WIN64 | |
278 union { jdouble d; julong l; } xbits, ybits; | |
279 xbits.d = x; | |
280 ybits.d = y; | |
281 // x Mod Infinity == x unless x is infinity | |
282 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
283 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
284 return x; | |
285 } | |
286 #endif | |
287 return ((jdouble)fmod((double)x,(double)y)); | |
288 JRT_END | |
289 | |
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290 #ifdef __SOFTFP__ |
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291 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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292 return x + y; |
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293 JRT_END |
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294 |
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295 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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296 return x - y; |
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297 JRT_END |
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298 |
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299 JRT_LEAF(jfloat, SharedRuntime::fmul(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::fdiv(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(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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308 return x + y; |
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309 JRT_END |
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310 |
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311 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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312 return x - y; |
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313 JRT_END |
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314 |
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315 JRT_LEAF(jdouble, SharedRuntime::dmul(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::ddiv(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(jfloat, SharedRuntime::i2f(jint x)) |
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324 return (jfloat)x; |
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325 JRT_END |
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326 |
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327 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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328 return (jdouble)x; |
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329 JRT_END |
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330 |
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331 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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332 return (jdouble)x; |
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333 JRT_END |
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334 |
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335 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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336 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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337 JRT_END |
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338 |
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339 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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340 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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341 JRT_END |
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342 |
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343 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double 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::dcmpg(double x, double y)) |
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348 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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349 JRT_END |
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350 |
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351 // Functions to return the opposite of the aeabi functions for nan. |
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352 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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353 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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354 JRT_END |
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355 |
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356 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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357 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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358 JRT_END |
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359 |
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360 JRT_LEAF(int, SharedRuntime::unordered_fcmple(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_dcmple(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_fcmpge(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_dcmpge(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_fcmpgt(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_dcmpgt(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 // Intrinsics make gcc generate code for these. |
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385 float SharedRuntime::fneg(float f) { |
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386 return -f; |
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387 } |
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388 |
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389 double SharedRuntime::dneg(double f) { |
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390 return -f; |
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391 } |
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392 |
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393 #endif // __SOFTFP__ |
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394 |
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395 #if defined(__SOFTFP__) || defined(E500V2) |
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396 // Intrinsics make gcc generate code for these. |
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397 double SharedRuntime::dabs(double f) { |
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398 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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399 } |
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400 |
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401 #endif |
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402 |
14390 | 403 #if defined(__SOFTFP__) || defined(PPC32) |
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404 double SharedRuntime::dsqrt(double f) { |
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405 return sqrt(f); |
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406 } |
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407 #endif |
0 | 408 |
409 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
508
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410 if (g_isnan(x)) |
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411 return 0; |
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412 if (x >= (jfloat) max_jint) |
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413 return max_jint; |
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414 if (x <= (jfloat) min_jint) |
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415 return min_jint; |
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416 return (jint) x; |
0 | 417 JRT_END |
418 | |
419 | |
420 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
508
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421 if (g_isnan(x)) |
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422 return 0; |
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423 if (x >= (jfloat) max_jlong) |
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424 return max_jlong; |
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425 if (x <= (jfloat) min_jlong) |
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426 return min_jlong; |
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427 return (jlong) x; |
0 | 428 JRT_END |
429 | |
430 | |
431 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
508
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432 if (g_isnan(x)) |
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433 return 0; |
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434 if (x >= (jdouble) max_jint) |
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435 return max_jint; |
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436 if (x <= (jdouble) min_jint) |
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437 return min_jint; |
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438 return (jint) x; |
0 | 439 JRT_END |
440 | |
441 | |
442 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
508
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443 if (g_isnan(x)) |
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444 return 0; |
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445 if (x >= (jdouble) max_jlong) |
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446 return max_jlong; |
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447 if (x <= (jdouble) min_jlong) |
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448 return min_jlong; |
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449 return (jlong) x; |
0 | 450 JRT_END |
451 | |
452 | |
453 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
454 return (jfloat)x; | |
455 JRT_END | |
456 | |
457 | |
458 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
459 return (jfloat)x; | |
460 JRT_END | |
461 | |
462 | |
463 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
464 return (jdouble)x; | |
465 JRT_END | |
466 | |
14309 | 467 // Exception handling across interpreter/compiler boundaries |
0 | 468 // |
469 // exception_handler_for_return_address(...) returns the continuation address. | |
470 // The continuation address is the entry point of the exception handler of the | |
471 // previous frame depending on the return address. | |
472 | |
1295 | 473 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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474 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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475 |
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476 // Reset method handle flag. |
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477 thread->set_is_method_handle_return(false); |
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478 |
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479 #ifdef GRAAL |
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480 // Graal's ExceptionHandlerStub expects the thread local exception PC to be clear |
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481 // and other exception handler continuations do not read it |
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482 thread->set_exception_pc(NULL); |
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483 #endif |
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484 |
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485 // The fastest case first |
0 | 486 CodeBlob* blob = CodeCache::find_blob(return_address); |
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487 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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488 if (nm != NULL) { |
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489 // Set flag if return address is a method handle call site. |
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490 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
0 | 491 // native nmethods don't have exception handlers |
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492 assert(!nm->is_native_method(), "no exception handler"); |
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493 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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494 if (nm->is_deopt_pc(return_address)) { |
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495 // If we come here because of a stack overflow, the stack may be |
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496 // unguarded. Reguard the stack otherwise if we return to the |
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497 // deopt blob and the stack bang causes a stack overflow we |
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498 // crash. |
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499 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); |
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500 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); |
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501 assert(guard_pages_enabled, "stack banging in deopt blob may cause crash"); |
0 | 502 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
503 } else { | |
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504 return nm->exception_begin(); |
0 | 505 } |
506 } | |
507 | |
508 // Entry code | |
509 if (StubRoutines::returns_to_call_stub(return_address)) { | |
510 return StubRoutines::catch_exception_entry(); | |
511 } | |
512 // Interpreted code | |
513 if (Interpreter::contains(return_address)) { | |
514 return Interpreter::rethrow_exception_entry(); | |
515 } | |
516 | |
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517 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
0 | 518 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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519 |
0 | 520 #ifndef PRODUCT |
521 { ResourceMark rm; | |
522 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
523 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
524 tty->print_cr("b) other problem"); | |
525 } | |
526 #endif // PRODUCT | |
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527 |
0 | 528 ShouldNotReachHere(); |
529 return NULL; | |
530 } | |
531 | |
532 | |
1295 | 533 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
534 return raw_exception_handler_for_return_address(thread, return_address); | |
0 | 535 JRT_END |
536 | |
1295 | 537 |
0 | 538 address SharedRuntime::get_poll_stub(address pc) { |
539 address stub; | |
540 // Look up the code blob | |
541 CodeBlob *cb = CodeCache::find_blob(pc); | |
542 | |
543 // Should be an nmethod | |
544 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
545 | |
546 // Look up the relocation information | |
547 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
548 "safepoint polling: type must be poll" ); | |
549 | |
550 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
551 "Only polling locations are used for safepoint"); | |
552 | |
553 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
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554 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
0 | 555 if (at_poll_return) { |
556 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
557 "polling page return stub not created yet"); | |
1748 | 558 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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559 } else if (has_wide_vectors) { |
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560 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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561 "polling page vectors safepoint stub not created yet"); |
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562 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
0 | 563 } else { |
564 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
565 "polling page safepoint stub not created yet"); | |
1748 | 566 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
0 | 567 } |
568 #ifndef PRODUCT | |
569 if( TraceSafepoint ) { | |
570 char buf[256]; | |
571 jio_snprintf(buf, sizeof(buf), | |
572 "... found polling page %s exception at pc = " | |
573 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
574 at_poll_return ? "return" : "loop", | |
575 (intptr_t)pc, (intptr_t)stub); | |
576 tty->print_raw_cr(buf); | |
577 } | |
578 #endif // PRODUCT | |
579 return stub; | |
580 } | |
581 | |
582 | |
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583 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
0 | 584 assert(caller.is_interpreted_frame(), ""); |
585 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
586 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
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587 oop result = cast_to_oop(*caller.interpreter_frame_tos_at(args_size - 1)); |
0 | 588 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); |
589 return result; | |
590 } | |
591 | |
592 | |
593 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
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594 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 595 vframeStream vfst(thread, true); |
596 methodHandle method = methodHandle(thread, vfst.method()); | |
597 address bcp = method()->bcp_from(vfst.bci()); | |
598 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
599 } | |
600 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
601 } | |
602 | |
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603 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
0 | 604 Handle h_exception = Exceptions::new_exception(thread, name, message); |
605 throw_and_post_jvmti_exception(thread, h_exception); | |
606 } | |
607 | |
610
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608 // The interpreter code to call this tracing function is only |
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609 // called/generated when TraceRedefineClasses has the right bits |
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610 // set. Since obsolete methods are never compiled, we don't have |
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611 // to modify the compilers to generate calls to this function. |
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612 // |
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613 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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614 JavaThread* thread, Method* method)) |
610
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615 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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616 |
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617 if (method->is_obsolete()) { |
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618 // We are calling an obsolete method, but this is not necessarily |
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619 // an error. Our method could have been redefined just after we |
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620 // fetched the Method* from the constant pool. |
610
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621 |
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622 // RC_TRACE macro has an embedded ResourceMark |
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623 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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624 ("calling obsolete method '%s'", |
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625 method->name_and_sig_as_C_string())); |
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626 if (RC_TRACE_ENABLED(0x00002000)) { |
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627 // this option is provided to debug calls to obsolete methods |
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628 guarantee(false, "faulting at call to an obsolete method."); |
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629 } |
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630 } |
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631 return 0; |
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632 JRT_END |
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633 |
0 | 634 // ret_pc points into caller; we are returning caller's exception handler |
635 // for given exception | |
636 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
637 bool force_unwind, bool top_frame_only) { | |
638 assert(nm != NULL, "must exist"); | |
639 ResourceMark rm; | |
640 | |
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641 #ifdef GRAAL |
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642 if (nm->is_compiled_by_graal()) { |
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643 // lookup exception handler for this pc |
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644 int catch_pco = ret_pc - nm->code_begin(); |
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645 ExceptionHandlerTable table(nm); |
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646 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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647 if (t != NULL) { |
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648 return nm->code_begin() + t->pco(); |
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649 } else { |
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650 // there is no exception handler for this pc => deoptimize |
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651 nm->make_not_entrant(); |
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652 JavaThread* thread = JavaThread::current(); |
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653 RegisterMap reg_map(thread); |
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654 frame runtime_frame = thread->last_frame(); |
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655 frame caller_frame = runtime_frame.sender(®_map); |
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656 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_not_compiled_exception_handler); |
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657 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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658 } |
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659 } |
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660 #endif |
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661 |
0 | 662 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
663 // determine handler bci, if any | |
664 EXCEPTION_MARK; | |
665 | |
666 int handler_bci = -1; | |
667 int scope_depth = 0; | |
668 if (!force_unwind) { | |
669 int bci = sd->bci(); | |
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670 bool recursive_exception = false; |
0 | 671 do { |
672 bool skip_scope_increment = false; | |
673 // exception handler lookup | |
674 KlassHandle ek (THREAD, exception->klass()); | |
7469
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675 methodHandle mh(THREAD, sd->method()); |
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676 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
0 | 677 if (HAS_PENDING_EXCEPTION) { |
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678 recursive_exception = true; |
0 | 679 // We threw an exception while trying to find the exception handler. |
680 // Transfer the new exception to the exception handle which will | |
681 // be set into thread local storage, and do another lookup for an | |
682 // exception handler for this exception, this time starting at the | |
683 // BCI of the exception handler which caused the exception to be | |
684 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
685 // argument to ensure that the correct exception is thrown (4870175). | |
686 exception = Handle(THREAD, PENDING_EXCEPTION); | |
687 CLEAR_PENDING_EXCEPTION; | |
688 if (handler_bci >= 0) { | |
689 bci = handler_bci; | |
690 handler_bci = -1; | |
691 skip_scope_increment = true; | |
692 } | |
693 } | |
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694 else { |
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695 recursive_exception = false; |
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696 } |
0 | 697 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
698 sd = sd->sender(); | |
699 if (sd != NULL) { | |
700 bci = sd->bci(); | |
701 } | |
702 ++scope_depth; | |
703 } | |
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704 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
0 | 705 } |
706 | |
707 // found handling method => lookup exception handler | |
1748 | 708 int catch_pco = ret_pc - nm->code_begin(); |
0 | 709 |
710 ExceptionHandlerTable table(nm); | |
711 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
712 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
713 // Allow abbreviated catch tables. The idea is to allow a method | |
714 // to materialize its exceptions without committing to the exact | |
715 // routing of exceptions. In particular this is needed for adding | |
14309 | 716 // a synthetic handler to unlock monitors when inlining |
717 // synchronized methods since the unlock path isn't represented in | |
0 | 718 // the bytecodes. |
719 t = table.entry_for(catch_pco, -1, 0); | |
720 } | |
721 | |
1378
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722 #ifdef COMPILER1 |
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723 if (t == NULL && nm->is_compiled_by_c1()) { |
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724 assert(nm->unwind_handler_begin() != NULL, ""); |
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725 return nm->unwind_handler_begin(); |
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726 } |
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727 #endif |
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728 |
0 | 729 if (t == NULL) { |
730 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
731 tty->print_cr(" Exception:"); | |
732 exception->print(); | |
733 tty->cr(); | |
734 tty->print_cr(" Compiled exception table :"); | |
735 table.print(); | |
736 nm->print_code(); | |
737 guarantee(false, "missing exception handler"); | |
738 return NULL; | |
739 } | |
740 | |
1748 | 741 return nm->code_begin() + t->pco(); |
0 | 742 } |
743 | |
744 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
745 // These errors occur only at call sites | |
746 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
747 JRT_END | |
748 | |
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749 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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750 // These errors occur only at call sites |
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751 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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752 JRT_END |
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753 |
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754 JRT_ENTRY(void, SharedRuntime::throw_InvalidInstalledCodeException(JavaThread* thread)) |
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755 // These errors occur only at call sites |
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756 throw_and_post_jvmti_exception(thread, vmSymbols::com_oracle_graal_api_code_InvalidInstalledCodeException()); |
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757 JRT_END |
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758 |
0 | 759 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
760 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
761 JRT_END | |
762 | |
763 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
764 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
765 JRT_END | |
766 | |
767 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
768 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
769 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
770 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
771 JRT_END | |
772 | |
773 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
774 // We avoid using the normal exception construction in this case because | |
775 // it performs an upcall to Java, and we're already out of stack space. | |
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776 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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777 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 778 Handle exception (thread, exception_oop); |
779 if (StackTraceInThrowable) { | |
780 java_lang_Throwable::fill_in_stack_trace(exception); | |
781 } | |
782 throw_and_post_jvmti_exception(thread, exception); | |
783 JRT_END | |
784 | |
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785 #ifdef GRAAL |
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786 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
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787 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
10409 | 788 thread->set_graal_implicit_exception_pc(pc); |
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789 thread->set_pending_deoptimization(Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret)); |
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790 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
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791 } |
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792 #endif |
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793 |
0 | 794 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
795 address pc, | |
796 SharedRuntime::ImplicitExceptionKind exception_kind) | |
797 { | |
798 address target_pc = NULL; | |
799 | |
800 if (Interpreter::contains(pc)) { | |
801 #ifdef CC_INTERP | |
802 // C++ interpreter doesn't throw implicit exceptions | |
803 ShouldNotReachHere(); | |
804 #else | |
805 switch (exception_kind) { | |
806 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
807 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
808 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
809 default: ShouldNotReachHere(); | |
810 } | |
811 #endif // !CC_INTERP | |
812 } else { | |
813 switch (exception_kind) { | |
814 case STACK_OVERFLOW: { | |
815 // Stack overflow only occurs upon frame setup; the callee is | |
816 // going to be unwound. Dispatch to a shared runtime stub | |
817 // which will cause the StackOverflowError to be fabricated | |
818 // and processed. | |
819 // For stack overflow in deoptimization blob, cleanup thread. | |
820 if (thread->deopt_mark() != NULL) { | |
821 Deoptimization::cleanup_deopt_info(thread, NULL); | |
822 } | |
4944 | 823 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
0 | 824 return StubRoutines::throw_StackOverflowError_entry(); |
825 } | |
826 | |
827 case IMPLICIT_NULL: { | |
828 if (VtableStubs::contains(pc)) { | |
829 // We haven't yet entered the callee frame. Fabricate an | |
830 // exception and begin dispatching it in the caller. Since | |
831 // the caller was at a call site, it's safe to destroy all | |
832 // caller-saved registers, as these entry points do. | |
833 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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834 |
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835 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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836 if (vt_stub == NULL) return NULL; |
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837 |
0 | 838 if (vt_stub->is_abstract_method_error(pc)) { |
839 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
4944 | 840 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
0 | 841 return StubRoutines::throw_AbstractMethodError_entry(); |
842 } else { | |
4944 | 843 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
0 | 844 return StubRoutines::throw_NullPointerException_at_call_entry(); |
845 } | |
846 } else { | |
847 CodeBlob* cb = CodeCache::find_blob(pc); | |
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848 |
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849 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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850 if (cb == NULL) return NULL; |
0 | 851 |
852 // Exception happened in CodeCache. Must be either: | |
853 // 1. Inline-cache check in C2I handler blob, | |
854 // 2. Inline-cache check in nmethod, or | |
14309 | 855 // 3. Implicit null exception in nmethod |
0 | 856 |
857 if (!cb->is_nmethod()) { | |
11029 | 858 bool is_in_blob = cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(); |
859 if (!is_in_blob) { | |
860 cb->print(); | |
861 fatal(err_msg("exception happened outside interpreter, nmethods and vtable stubs at pc " INTPTR_FORMAT, pc)); | |
862 } | |
4944 | 863 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
0 | 864 // There is no handler here, so we will simply unwind. |
865 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
866 } | |
867 | |
868 // Otherwise, it's an nmethod. Consult its exception handlers. | |
869 nmethod* nm = (nmethod*)cb; | |
870 if (nm->inlinecache_check_contains(pc)) { | |
871 // exception happened inside inline-cache check code | |
872 // => the nmethod is not yet active (i.e., the frame | |
873 // is not set up yet) => use return address pushed by | |
874 // caller => don't push another return address | |
4944 | 875 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
0 | 876 return StubRoutines::throw_NullPointerException_at_call_entry(); |
877 } | |
878 | |
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879 if (nm->method()->is_method_handle_intrinsic()) { |
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880 // exception happened inside MH dispatch code, similar to a vtable stub |
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881 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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882 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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883 } |
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884 |
0 | 885 #ifndef PRODUCT |
886 _implicit_null_throws++; | |
887 #endif | |
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888 #ifdef GRAAL |
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889 if (nm->is_compiled_by_graal() && nm->pc_desc_at(pc) != NULL) { |
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890 // If there's no PcDesc then we'll die way down inside of |
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891 // deopt instead of just getting normal error reporting, |
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892 // so only go there if it will succeed. |
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893 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
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894 } else { |
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895 #endif |
0 | 896 target_pc = nm->continuation_for_implicit_exception(pc); |
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897 #ifdef GRAAL |
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898 } |
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899 #endif |
1250 | 900 // If there's an unexpected fault, target_pc might be NULL, |
901 // in which case we want to fall through into the normal | |
902 // error handling code. | |
0 | 903 } |
904 | |
905 break; // fall through | |
906 } | |
907 | |
908 | |
909 case IMPLICIT_DIVIDE_BY_ZERO: { | |
910 nmethod* nm = CodeCache::find_nmethod(pc); | |
911 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
912 #ifndef PRODUCT | |
913 _implicit_div0_throws++; | |
914 #endif | |
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915 #ifdef GRAAL |
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916 if (nm->is_compiled_by_graal()) { |
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917 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
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918 } else { |
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919 #endif |
0 | 920 target_pc = nm->continuation_for_implicit_exception(pc); |
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921 #ifdef GRAAL |
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922 } |
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923 #endif |
1250 | 924 // If there's an unexpected fault, target_pc might be NULL, |
925 // in which case we want to fall through into the normal | |
926 // error handling code. | |
0 | 927 break; // fall through |
928 } | |
929 | |
930 default: ShouldNotReachHere(); | |
931 } | |
932 | |
933 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
934 | |
935 // for AbortVMOnException flag | |
936 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
937 if (exception_kind == IMPLICIT_NULL) { | |
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938 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 939 } else { |
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940 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 941 } |
942 return target_pc; | |
943 } | |
944 | |
945 ShouldNotReachHere(); | |
946 return NULL; | |
947 } | |
948 | |
949 | |
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950 /** |
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951 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
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952 * installed in the native function entry of all native Java methods before |
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953 * they get linked to their actual native methods. |
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954 * |
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955 * \note |
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956 * This method actually never gets called! The reason is because |
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957 * the interpreter's native entries call NativeLookup::lookup() which |
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958 * throws the exception when the lookup fails. The exception is then |
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959 * caught and forwarded on the return from NativeLookup::lookup() call |
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960 * before the call to the native function. This might change in the future. |
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961 */ |
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962 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
0 | 963 { |
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964 // We return a bad value here to make sure that the exception is |
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965 // forwarded before we look at the return value. |
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966 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
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967 } |
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968 JNI_END |
0 | 969 |
970 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
971 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
972 } | |
973 | |
974 | |
975 #ifndef PRODUCT | |
976 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
977 const frame f = thread->last_frame(); | |
978 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
979 #ifndef PRODUCT | |
980 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
981 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
982 #endif // !PRODUCT | |
983 return preserve_this_value; | |
984 JRT_END | |
985 #endif // !PRODUCT | |
986 | |
987 | |
988 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
989 os::yield_all(attempts); | |
990 JRT_END | |
991 | |
992 | |
993 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
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994 #ifdef GRAAL |
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995 if (!obj->klass()->has_finalizer()) { |
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996 return; |
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997 } |
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998 #endif |
0 | 999 assert(obj->is_oop(), "must be a valid oop"); |
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1000 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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1001 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 1002 JRT_END |
1003 | |
1004 | |
1005 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
1006 if (thread != NULL) { | |
1007 if (thread->is_Java_thread()) { | |
1008 oop obj = ((JavaThread*)thread)->threadObj(); | |
1009 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
1010 } | |
1011 } | |
1012 return 0; | |
1013 } | |
1014 | |
1015 /** | |
1016 * This function ought to be a void function, but cannot be because | |
1017 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
1018 * 6254741. Once that is fixed we can remove the dummy return value. | |
1019 */ | |
1020 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
1021 return dtrace_object_alloc_base(Thread::current(), o); | |
1022 } | |
1023 | |
1024 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
1025 assert(DTraceAllocProbes, "wrong call"); | |
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1026 Klass* klass = o->klass(); |
0 | 1027 int size = o->size(); |
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1028 Symbol* name = klass->name(); |
4006 | 1029 HOTSPOT_OBJECT_ALLOC( |
1030 get_java_tid(thread), | |
1031 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
0 | 1032 return 0; |
1033 } | |
1034 | |
1035 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1036 JavaThread* thread, Method* method)) |
0 | 1037 assert(DTraceMethodProbes, "wrong call"); |
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1038 Symbol* kname = method->klass_name(); |
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1039 Symbol* name = method->name(); |
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1040 Symbol* sig = method->signature(); |
4006 | 1041 HOTSPOT_METHOD_ENTRY( |
1042 get_java_tid(thread), | |
1043 (char *) kname->bytes(), kname->utf8_length(), | |
1044 (char *) name->bytes(), name->utf8_length(), | |
1045 (char *) sig->bytes(), sig->utf8_length()); | |
0 | 1046 return 0; |
1047 JRT_END | |
1048 | |
1049 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1050 JavaThread* thread, Method* method)) |
0 | 1051 assert(DTraceMethodProbes, "wrong call"); |
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1052 Symbol* kname = method->klass_name(); |
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1053 Symbol* name = method->name(); |
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1054 Symbol* sig = method->signature(); |
4006 | 1055 HOTSPOT_METHOD_RETURN( |
1056 get_java_tid(thread), | |
1057 (char *) kname->bytes(), kname->utf8_length(), | |
1058 (char *) name->bytes(), name->utf8_length(), | |
1059 (char *) sig->bytes(), sig->utf8_length()); | |
0 | 1060 return 0; |
1061 JRT_END | |
1062 | |
1063 | |
1064 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
1065 // for a call current in progress, i.e., arguments has been pushed on stack | |
1066 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
1067 // vtable updates, etc. Caller frame must be compiled. | |
1068 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
1069 ResourceMark rm(THREAD); | |
1070 | |
1071 // last java frame on stack (which includes native call frames) | |
1072 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
1073 | |
1074 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
1075 } | |
1076 | |
1077 | |
1078 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
1079 // for a call current in progress, i.e., arguments has been pushed on stack | |
1080 // but callee has not been invoked yet. Caller frame must be compiled. | |
1081 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
1082 vframeStream& vfst, | |
1083 Bytecodes::Code& bc, | |
1084 CallInfo& callinfo, TRAPS) { | |
1085 Handle receiver; | |
1086 Handle nullHandle; //create a handy null handle for exception returns | |
1087 | |
1088 assert(!vfst.at_end(), "Java frame must exist"); | |
1089 | |
1090 // Find caller and bci from vframe | |
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1091 methodHandle caller(THREAD, vfst.method()); |
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1092 int bci = vfst.bci(); |
0 | 1093 |
1094 // Find bytecode | |
2142 | 1095 Bytecode_invoke bytecode(caller, bci); |
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1096 bc = bytecode.invoke_code(); |
2142 | 1097 int bytecode_index = bytecode.index(); |
0 | 1098 |
1099 // Find receiver for non-static call | |
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1100 if (bc != Bytecodes::_invokestatic && |
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1101 bc != Bytecodes::_invokedynamic && |
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1102 bc != Bytecodes::_invokehandle) { |
0 | 1103 // This register map must be update since we need to find the receiver for |
1104 // compiled frames. The receiver might be in a register. | |
1105 RegisterMap reg_map2(thread); | |
1106 frame stubFrame = thread->last_frame(); | |
1107 // Caller-frame is a compiled frame | |
1108 frame callerFrame = stubFrame.sender(®_map2); | |
1109 | |
2142 | 1110 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
0 | 1111 if (callee.is_null()) { |
1112 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
1113 } | |
1114 // Retrieve from a compiled argument list | |
1115 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
1116 | |
1117 if (receiver.is_null()) { | |
1118 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
1119 } | |
1120 } | |
1121 | |
1122 // Resolve method. This is parameterized by bytecode. | |
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1123 constantPoolHandle constants(THREAD, caller->constants()); |
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1124 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
0 | 1125 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
1126 | |
1127 #ifdef ASSERT | |
1128 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1129 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic && bc != Bytecodes::_invokehandle) { |
0 | 1130 assert(receiver.not_null(), "should have thrown exception"); |
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1131 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1132 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
0 | 1133 // klass is already loaded |
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1134 KlassHandle static_receiver_klass(THREAD, rk); |
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1135 // Method handle invokes might have been optimized to a direct call |
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1136 // so don't check for the receiver class. |
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1137 // FIXME this weakens the assert too much |
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1138 methodHandle callee = callinfo.selected_method(); |
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1139 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1140 callee->is_method_handle_intrinsic() || |
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1141 callee->is_compiled_lambda_form(), |
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1142 "actual receiver must be subclass of static receiver klass"); |
0 | 1143 if (receiver_klass->oop_is_instance()) { |
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1144 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
0 | 1145 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1146 receiver_klass()->print(); |
0 | 1147 } |
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1148 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
0 | 1149 } |
1150 } | |
1151 #endif | |
1152 | |
1153 return receiver; | |
1154 } | |
1155 | |
1156 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
1157 ResourceMark rm(THREAD); | |
1158 // We need first to check if any Java activations (compiled, interpreted) | |
1159 // exist on the stack since last JavaCall. If not, we need | |
1160 // to get the target method from the JavaCall wrapper. | |
1161 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
1162 methodHandle callee_method; | |
1163 if (vfst.at_end()) { | |
1164 // No Java frames were found on stack since we did the JavaCall. | |
1165 // Hence the stack can only contain an entry_frame. We need to | |
1166 // find the target method from the stub frame. | |
1167 RegisterMap reg_map(thread, false); | |
1168 frame fr = thread->last_frame(); | |
1169 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
1170 fr = fr.sender(®_map); | |
1171 assert(fr.is_entry_frame(), "must be"); | |
1172 // fr is now pointing to the entry frame. | |
1173 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
1174 } else { | |
1175 Bytecodes::Code bc; | |
1176 CallInfo callinfo; | |
1177 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
1178 callee_method = callinfo.selected_method(); | |
1179 } | |
1180 assert(callee_method()->is_method(), "must be"); | |
1181 return callee_method; | |
1182 } | |
1183 | |
1184 // Resolves a call. | |
1185 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
1186 bool is_virtual, | |
1187 bool is_optimized, TRAPS) { | |
1188 methodHandle callee_method; | |
1189 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1190 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
1191 int retry_count = 0; | |
1192 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
1142 | 1193 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
0 | 1194 // If has a pending exception then there is no need to re-try to |
1195 // resolve this method. | |
1196 // If the method has been redefined, we need to try again. | |
1197 // Hack: we have no way to update the vtables of arrays, so don't | |
1198 // require that java.lang.Object has been updated. | |
1199 | |
1200 // It is very unlikely that method is redefined more than 100 times | |
1201 // in the middle of resolve. If it is looping here more than 100 times | |
1202 // means then there could be a bug here. | |
1203 guarantee((retry_count++ < 100), | |
1204 "Could not resolve to latest version of redefined method"); | |
1205 // method is redefined in the middle of resolve so re-try. | |
1206 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1207 } | |
1208 } | |
1209 return callee_method; | |
1210 } | |
1211 | |
1212 // Resolves a call. The compilers generate code for calls that go here | |
1213 // and are patched with the real destination of the call. | |
1214 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
1215 bool is_virtual, | |
1216 bool is_optimized, TRAPS) { | |
1217 | |
1218 ResourceMark rm(thread); | |
1219 RegisterMap cbl_map(thread, false); | |
1220 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
1221 | |
1295 | 1222 CodeBlob* caller_cb = caller_frame.cb(); |
1223 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
1224 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
14212 | 1225 |
0 | 1226 // make sure caller is not getting deoptimized |
1227 // and removed before we are done with it. | |
1228 // CLEANUP - with lazy deopt shouldn't need this lock | |
1295 | 1229 nmethodLocker caller_lock(caller_nm); |
0 | 1230 |
1231 // determine call info & receiver | |
1232 // note: a) receiver is NULL for static calls | |
1233 // b) an exception is thrown if receiver is NULL for non-static calls | |
1234 CallInfo call_info; | |
1235 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
1236 Handle receiver = find_callee_info(thread, invoke_code, | |
1237 call_info, CHECK_(methodHandle())); | |
1238 methodHandle callee_method = call_info.selected_method(); | |
1239 | |
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1240 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1241 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1242 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1243 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
0 | 1244 |
14212 | 1245 // We do not patch the call site if the caller nmethod has been made non-entrant. |
1246 if (!caller_nm->is_in_use()) { | |
1247 return callee_method; | |
1248 } | |
1249 | |
0 | 1250 #ifndef PRODUCT |
1251 // tracing/debugging/statistics | |
1252 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
1253 (is_virtual) ? (&_resolve_virtual_ctr) : | |
1254 (&_resolve_static_ctr); | |
1255 Atomic::inc(addr); | |
1256 | |
1257 if (TraceCallFixup) { | |
1258 ResourceMark rm(thread); | |
1259 tty->print("resolving %s%s (%s) call to", | |
1260 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
1261 Bytecodes::name(invoke_code)); | |
1262 callee_method->print_short_name(tty); | |
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1263 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
0 | 1264 } |
1265 #endif | |
1266 | |
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1267 // JSR 292 key invariant: |
1295 | 1268 // If the resolved method is a MethodHandle invoke target the call |
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1269 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1270 // leaving the stack in a state unknown to either caller or callee |
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1271 // TODO detune for now but we might need it again |
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1272 // assert(!callee_method->is_compiled_lambda_form() || |
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1273 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
1295 | 1274 |
0 | 1275 // Compute entry points. This might require generation of C2I converter |
1276 // frames, so we cannot be holding any locks here. Furthermore, the | |
1277 // computation of the entry points is independent of patching the call. We | |
1278 // always return the entry-point, but we only patch the stub if the call has | |
1279 // not been deoptimized. Return values: For a virtual call this is an | |
1280 // (cached_oop, destination address) pair. For a static call/optimized | |
1281 // virtual this is just a destination address. | |
1282 | |
1283 StaticCallInfo static_call_info; | |
1284 CompiledICInfo virtual_call_info; | |
1285 | |
1286 // Make sure the callee nmethod does not get deoptimized and removed before | |
1287 // we are done patching the code. | |
1295 | 1288 nmethod* callee_nm = callee_method->code(); |
14212 | 1289 if (callee_nm != NULL && !callee_nm->is_in_use()) { |
1290 // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded. | |
1291 callee_nm = NULL; | |
1292 } | |
1295 | 1293 nmethodLocker nl_callee(callee_nm); |
0 | 1294 #ifdef ASSERT |
1295 | 1295 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
0 | 1296 #endif |
1297 | |
1298 if (is_virtual) { | |
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1299 assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check"); |
0 | 1300 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); |
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1301 KlassHandle h_klass(THREAD, invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass()); |
0 | 1302 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, |
1303 is_optimized, static_bound, virtual_call_info, | |
1304 CHECK_(methodHandle())); | |
1305 } else { | |
1306 // static call | |
1307 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
1308 } | |
1309 | |
1310 // grab lock, check for deoptimization and potentially patch caller | |
1311 { | |
1312 MutexLocker ml_patch(CompiledIC_lock); | |
1313 | |
14212 | 1314 // Lock blocks for safepoint during which both nmethods can change state. |
1315 | |
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1316 // Now that we are ready to patch if the Method* was redefined then |
0 | 1317 // don't update call site and let the caller retry. |
14212 | 1318 // Don't update call site if caller nmethod has been made non-entrant |
1319 // as it is a waste of time. | |
1320 // Don't update call site if callee nmethod was unloaded or deoptimized. | |
1321 // Don't update call site if callee nmethod was replaced by an other nmethod | |
1322 // which may happen when multiply alive nmethod (tiered compilation) | |
1323 // will be supported. | |
1324 if (!callee_method->is_old() && caller_nm->is_in_use() && | |
1325 (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) { | |
0 | 1326 #ifdef ASSERT |
1327 // We must not try to patch to jump to an already unloaded method. | |
1328 if (dest_entry_point != 0) { | |
14212 | 1329 CodeBlob* cb = CodeCache::find_blob(dest_entry_point); |
1330 assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm), | |
1331 "should not call unloaded nmethod"); | |
0 | 1332 } |
1333 #endif | |
1334 if (is_virtual) { | |
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1335 nmethod* nm = callee_nm; |
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1336 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1337 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
0 | 1338 if (inline_cache->is_clean()) { |
1339 inline_cache->set_to_monomorphic(virtual_call_info); | |
1340 } | |
1341 } else { | |
1342 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
1343 if (ssc->is_clean()) ssc->set(static_call_info); | |
1344 } | |
1345 } | |
1346 | |
1347 } // unlock CompiledIC_lock | |
1348 | |
1349 return callee_method; | |
1350 } | |
1351 | |
1352 | |
1353 // Inline caches exist only in compiled code | |
1354 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
1355 #ifdef ASSERT | |
1356 RegisterMap reg_map(thread, false); | |
1357 frame stub_frame = thread->last_frame(); | |
1358 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1359 frame caller_frame = stub_frame.sender(®_map); | |
1360 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
1361 #endif /* ASSERT */ | |
1362 | |
1363 methodHandle callee_method; | |
1364 JRT_BLOCK | |
1365 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1366 // Return Method* through TLS |
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1367 thread->set_vm_result_2(callee_method()); |
0 | 1368 JRT_BLOCK_END |
1369 // return compiled code entry point after potential safepoints | |
1370 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1371 return callee_method->verified_code_entry(); | |
1372 JRT_END | |
1373 | |
1374 | |
1375 // Handle call site that has been made non-entrant | |
1376 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
1377 // 6243940 We might end up in here if the callee is deoptimized | |
1378 // as we race to call it. We don't want to take a safepoint if | |
1379 // the caller was interpreted because the caller frame will look | |
1380 // interpreted to the stack walkers and arguments are now | |
1381 // "compiled" so it is much better to make this transition | |
1382 // invisible to the stack walking code. The i2c path will | |
1383 // place the callee method in the callee_target. It is stashed | |
1384 // there because if we try and find the callee by normal means a | |
1385 // safepoint is possible and have trouble gc'ing the compiled args. | |
1386 RegisterMap reg_map(thread, false); | |
1387 frame stub_frame = thread->last_frame(); | |
1388 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1389 frame caller_frame = stub_frame.sender(®_map); | |
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1390 |
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1391 if (caller_frame.is_interpreted_frame() || |
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1392 caller_frame.is_entry_frame()) { |
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1393 Method* callee = thread->callee_target(); |
0 | 1394 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1395 thread->set_vm_result_2(callee); |
0 | 1396 thread->set_callee_target(NULL); |
1397 return callee->get_c2i_entry(); | |
1398 } | |
1399 | |
1400 // Must be compiled to compiled path which is safe to stackwalk | |
1401 methodHandle callee_method; | |
1402 JRT_BLOCK | |
1403 // Force resolving of caller (if we called from compiled frame) | |
1404 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1405 thread->set_vm_result_2(callee_method()); |
0 | 1406 JRT_BLOCK_END |
1407 // return compiled code entry point after potential safepoints | |
1408 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1409 return callee_method->verified_code_entry(); | |
1410 JRT_END | |
1411 | |
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1412 // Handle abstract method call |
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1413 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_abstract(JavaThread* thread)) |
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1414 return StubRoutines::throw_AbstractMethodError_entry(); |
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1415 JRT_END |
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1416 |
0 | 1417 |
1418 // resolve a static call and patch code | |
1419 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
1420 methodHandle callee_method; | |
1421 JRT_BLOCK | |
1422 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1423 thread->set_vm_result_2(callee_method()); |
0 | 1424 JRT_BLOCK_END |
1425 // return compiled code entry point after potential safepoints | |
1426 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1427 return callee_method->verified_code_entry(); | |
1428 JRT_END | |
1429 | |
1430 | |
1431 // resolve virtual call and update inline cache to monomorphic | |
1432 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
1433 methodHandle callee_method; | |
1434 JRT_BLOCK | |
1435 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1436 thread->set_vm_result_2(callee_method()); |
0 | 1437 JRT_BLOCK_END |
1438 // return compiled code entry point after potential safepoints | |
1439 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1440 return callee_method->verified_code_entry(); | |
1441 JRT_END | |
1442 | |
1443 | |
1444 // Resolve a virtual call that can be statically bound (e.g., always | |
1445 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
1446 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
1447 methodHandle callee_method; | |
1448 JRT_BLOCK | |
1449 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1450 thread->set_vm_result_2(callee_method()); |
0 | 1451 JRT_BLOCK_END |
1452 // return compiled code entry point after potential safepoints | |
1453 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1454 return callee_method->verified_code_entry(); | |
1455 JRT_END | |
1456 | |
1457 | |
1458 | |
1459 | |
1460 | |
1461 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
1462 ResourceMark rm(thread); | |
1463 CallInfo call_info; | |
1464 Bytecodes::Code bc; | |
1465 | |
1466 // receiver is NULL for static calls. An exception is thrown for NULL | |
1467 // receivers for non-static calls | |
1468 Handle receiver = find_callee_info(thread, bc, call_info, | |
1469 CHECK_(methodHandle())); | |
1470 // Compiler1 can produce virtual call sites that can actually be statically bound | |
1471 // If we fell thru to below we would think that the site was going megamorphic | |
1472 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
1473 // we'd try and do a vtable dispatch however methods that can be statically bound | |
1474 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
1475 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
1476 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
1477 // never to miss again. I don't believe C2 will produce code like this but if it | |
1478 // did this would still be the correct thing to do for it too, hence no ifdef. | |
1479 // | |
1480 if (call_info.resolved_method()->can_be_statically_bound()) { | |
1481 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
1482 if (TraceCallFixup) { | |
1483 RegisterMap reg_map(thread, false); | |
1484 frame caller_frame = thread->last_frame().sender(®_map); | |
1485 ResourceMark rm(thread); | |
1486 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
1487 callee_method->print_short_name(tty); | |
1488 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
1489 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1490 } | |
1491 return callee_method; | |
1492 } | |
1493 | |
1494 methodHandle callee_method = call_info.selected_method(); | |
1495 | |
1496 bool should_be_mono = false; | |
1497 | |
1498 #ifndef PRODUCT | |
1499 Atomic::inc(&_ic_miss_ctr); | |
1500 | |
1501 // Statistics & Tracing | |
1502 if (TraceCallFixup) { | |
1503 ResourceMark rm(thread); | |
1504 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
1505 callee_method->print_short_name(tty); | |
1506 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1507 } | |
1508 | |
1509 if (ICMissHistogram) { | |
1510 MutexLocker m(VMStatistic_lock); | |
1511 RegisterMap reg_map(thread, false); | |
1512 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
1513 // produce statistics under the lock | |
1514 trace_ic_miss(f.pc()); | |
1515 } | |
1516 #endif | |
1517 | |
1518 // install an event collector so that when a vtable stub is created the | |
1519 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
1520 // event can't be posted when the stub is created as locks are held | |
1521 // - instead the event will be deferred until the event collector goes | |
1522 // out of scope. | |
1523 JvmtiDynamicCodeEventCollector event_collector; | |
1524 | |
1525 // Update inline cache to megamorphic. Skip update if caller has been | |
1526 // made non-entrant or we are called from interpreted. | |
1527 { MutexLocker ml_patch (CompiledIC_lock); | |
1528 RegisterMap reg_map(thread, false); | |
1529 frame caller_frame = thread->last_frame().sender(®_map); | |
1530 CodeBlob* cb = caller_frame.cb(); | |
1531 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
1532 // Not a non-entrant nmethod, so find inline_cache | |
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1533 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
0 | 1534 bool should_be_mono = false; |
1535 if (inline_cache->is_optimized()) { | |
1536 if (TraceCallFixup) { | |
1537 ResourceMark rm(thread); | |
1538 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
1539 callee_method->print_short_name(tty); | |
1540 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1541 } | |
1542 should_be_mono = true; | |
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1543 } else if (inline_cache->is_icholder_call()) { |
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1544 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1545 if ( ic_oop != NULL) { |
0 | 1546 |
1547 if (receiver()->klass() == ic_oop->holder_klass()) { | |
1548 // This isn't a real miss. We must have seen that compiled code | |
1549 // is now available and we want the call site converted to a | |
1550 // monomorphic compiled call site. | |
1551 // We can't assert for callee_method->code() != NULL because it | |
1552 // could have been deoptimized in the meantime | |
1553 if (TraceCallFixup) { | |
1554 ResourceMark rm(thread); | |
1555 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
1556 callee_method->print_short_name(tty); | |
1557 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1558 } | |
1559 should_be_mono = true; | |
1560 } | |
1561 } | |
1562 } | |
1563 | |
1564 if (should_be_mono) { | |
1565 | |
1566 // We have a path that was monomorphic but was going interpreted | |
1567 // and now we have (or had) a compiled entry. We correct the IC | |
1568 // by using a new icBuffer. | |
1569 CompiledICInfo info; | |
1570 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
1571 inline_cache->compute_monomorphic_entry(callee_method, | |
1572 receiver_klass, | |
1573 inline_cache->is_optimized(), | |
1574 false, | |
1575 info, CHECK_(methodHandle())); | |
1576 inline_cache->set_to_monomorphic(info); | |
1577 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
12294 | 1578 // Potential change to megamorphic |
1579 bool successful = inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
1580 if (!successful) { | |
1581 inline_cache->set_to_clean(); | |
1582 } | |
0 | 1583 } else { |
1584 // Either clean or megamorphic | |
1585 } | |
1586 } | |
1587 } // Release CompiledIC_lock | |
1588 | |
1589 return callee_method; | |
1590 } | |
1591 | |
1592 // | |
1593 // Resets a call-site in compiled code so it will get resolved again. | |
1594 // This routines handles both virtual call sites, optimized virtual call | |
1595 // sites, and static call sites. Typically used to change a call sites | |
1596 // destination from compiled to interpreted. | |
1597 // | |
1598 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
1599 ResourceMark rm(thread); | |
1600 RegisterMap reg_map(thread, false); | |
1601 frame stub_frame = thread->last_frame(); | |
1602 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
1603 frame caller = stub_frame.sender(®_map); | |
1604 | |
1605 // Do nothing if the frame isn't a live compiled frame. | |
1606 // nmethod could be deoptimized by the time we get here | |
1607 // so no update to the caller is needed. | |
1608 | |
1609 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
1610 | |
1611 address pc = caller.pc(); | |
1612 | |
1613 // Default call_addr is the location of the "basic" call. | |
1614 // Determine the address of the call we a reresolving. With | |
1615 // Inline Caches we will always find a recognizable call. | |
1616 // With Inline Caches disabled we may or may not find a | |
1617 // recognizable call. We will always find a call for static | |
1618 // calls and for optimized virtual calls. For vanilla virtual | |
1619 // calls it depends on the state of the UseInlineCaches switch. | |
1620 // | |
1621 // With Inline Caches disabled we can get here for a virtual call | |
1622 // for two reasons: | |
1623 // 1 - calling an abstract method. The vtable for abstract methods | |
1624 // will run us thru handle_wrong_method and we will eventually | |
1625 // end up in the interpreter to throw the ame. | |
1626 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
1627 // call and between the time we fetch the entry address and | |
1628 // we jump to it the target gets deoptimized. Similar to 1 | |
1629 // we will wind up in the interprter (thru a c2i with c2). | |
1630 // | |
1631 address call_addr = NULL; | |
1632 { | |
1633 // Get call instruction under lock because another thread may be | |
1634 // busy patching it. | |
1635 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1636 // Location of call instruction | |
1637 if (NativeCall::is_call_before(pc)) { | |
1638 NativeCall *ncall = nativeCall_before(pc); | |
1639 call_addr = ncall->instruction_address(); | |
1640 } | |
1641 } | |
1642 | |
1643 // Check for static or virtual call | |
1644 bool is_static_call = false; | |
1645 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
1646 // Make sure nmethod doesn't get deoptimized and removed until | |
1647 // this is done with it. | |
1648 // CLEANUP - with lazy deopt shouldn't need this lock | |
1649 nmethodLocker nmlock(caller_nm); | |
1650 | |
1651 if (call_addr != NULL) { | |
1652 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
1653 int ret = iter.next(); // Get item | |
1654 if (ret) { | |
1655 assert(iter.addr() == call_addr, "must find call"); | |
1656 if (iter.type() == relocInfo::static_call_type) { | |
1657 is_static_call = true; | |
1658 } else { | |
1659 assert(iter.type() == relocInfo::virtual_call_type || | |
1660 iter.type() == relocInfo::opt_virtual_call_type | |
1661 , "unexpected relocInfo. type"); | |
1662 } | |
1663 } else { | |
1664 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
1665 } | |
1666 | |
1667 // Cleaning the inline cache will force a new resolve. This is more robust | |
1668 // than directly setting it to the new destination, since resolving of calls | |
1669 // is always done through the same code path. (experience shows that it | |
1670 // leads to very hard to track down bugs, if an inline cache gets updated | |
1671 // to a wrong method). It should not be performance critical, since the | |
1672 // resolve is only done once. | |
1673 | |
1674 MutexLocker ml(CompiledIC_lock); | |
1675 // | |
1676 // We do not patch the call site if the nmethod has been made non-entrant | |
1677 // as it is a waste of time | |
1678 // | |
1679 if (caller_nm->is_in_use()) { | |
1680 if (is_static_call) { | |
1681 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
1682 ssc->set_to_clean(); | |
1683 } else { | |
1684 // compiled, dispatched call (which used to call an interpreted method) | |
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1685 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
0 | 1686 inline_cache->set_to_clean(); |
1687 } | |
1688 } | |
1689 } | |
1690 | |
1691 } | |
1692 | |
1693 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
1694 | |
1695 | |
1696 #ifndef PRODUCT | |
1697 Atomic::inc(&_wrong_method_ctr); | |
1698 | |
1699 if (TraceCallFixup) { | |
1700 ResourceMark rm(thread); | |
1701 tty->print("handle_wrong_method reresolving call to"); | |
1702 callee_method->print_short_name(tty); | |
1703 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1704 } | |
1705 #endif | |
1706 | |
1707 return callee_method; | |
1708 } | |
1709 | |
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1710 #ifdef ASSERT |
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1711 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1712 const BasicType* sig_bt, |
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1713 const VMRegPair* regs) { |
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1714 ResourceMark rm; |
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1715 const int total_args_passed = method->size_of_parameters(); |
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1716 const VMRegPair* regs_with_member_name = regs; |
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1717 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1718 |
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1719 const int member_arg_pos = total_args_passed - 1; |
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1720 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1721 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1722 |
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1723 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1724 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1725 |
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1726 for (int i = 0; i < member_arg_pos; i++) { |
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1727 VMReg a = regs_with_member_name[i].first(); |
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1728 VMReg b = regs_without_member_name[i].first(); |
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1729 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1730 } |
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1731 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1732 } |
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1733 #endif |
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1734 |
0 | 1735 // --------------------------------------------------------------------------- |
1736 // We are calling the interpreter via a c2i. Normally this would mean that | |
1737 // we were called by a compiled method. However we could have lost a race | |
1738 // where we went int -> i2c -> c2i and so the caller could in fact be | |
1205 | 1739 // interpreted. If the caller is compiled we attempt to patch the caller |
0 | 1740 // so he no longer calls into the interpreter. |
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1741 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1742 Method* moop(method); |
0 | 1743 |
1744 address entry_point = moop->from_compiled_entry(); | |
1745 | |
1746 // It's possible that deoptimization can occur at a call site which hasn't | |
1747 // been resolved yet, in which case this function will be called from | |
1748 // an nmethod that has been patched for deopt and we can ignore the | |
1749 // request for a fixup. | |
1750 // Also it is possible that we lost a race in that from_compiled_entry | |
1751 // is now back to the i2c in that case we don't need to patch and if | |
1752 // we did we'd leap into space because the callsite needs to use | |
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1753 // "to interpreter" stub in order to load up the Method*. Don't |
0 | 1754 // ask me how I know this... |
1755 | |
1756 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
1205 | 1757 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
1758 return; | |
1759 } | |
1760 | |
1761 // The check above makes sure this is a nmethod. | |
1762 nmethod* nm = cb->as_nmethod_or_null(); | |
1763 assert(nm, "must be"); | |
1764 | |
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1765 // Get the return PC for the passed caller PC. |
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1766 address return_pc = caller_pc + frame::pc_return_offset; |
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1767 |
0 | 1768 // There is a benign race here. We could be attempting to patch to a compiled |
1769 // entry point at the same time the callee is being deoptimized. If that is | |
1770 // the case then entry_point may in fact point to a c2i and we'd patch the | |
1771 // call site with the same old data. clear_code will set code() to NULL | |
1772 // at the end of it. If we happen to see that NULL then we can skip trying | |
1773 // to patch. If we hit the window where the callee has a c2i in the | |
1774 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
1775 // and patch the code with the same old data. Asi es la vida. | |
1776 | |
1777 if (moop->code() == NULL) return; | |
1778 | |
1205 | 1779 if (nm->is_in_use()) { |
0 | 1780 |
1781 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
1782 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1783 if (NativeCall::is_call_before(return_pc)) { |
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1784 NativeCall *call = nativeCall_before(return_pc); |
0 | 1785 // |
1786 // bug 6281185. We might get here after resolving a call site to a vanilla | |
1787 // virtual call. Because the resolvee uses the verified entry it may then | |
1788 // see compiled code and attempt to patch the site by calling us. This would | |
1789 // then incorrectly convert the call site to optimized and its downhill from | |
1790 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
1791 // just made a call site that could be megamorphic into a monomorphic site | |
1792 // for the rest of its life! Just another racing bug in the life of | |
1793 // fixup_callers_callsite ... | |
1794 // | |
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1795 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
0 | 1796 iter.next(); |
1797 assert(iter.has_current(), "must have a reloc at java call site"); | |
1798 relocInfo::relocType typ = iter.reloc()->type(); | |
1799 if ( typ != relocInfo::static_call_type && | |
1800 typ != relocInfo::opt_virtual_call_type && | |
1801 typ != relocInfo::static_stub_type) { | |
1802 return; | |
1803 } | |
1804 address destination = call->destination(); | |
1805 if (destination != entry_point) { | |
1806 CodeBlob* callee = CodeCache::find_blob(destination); | |
1807 // callee == cb seems weird. It means calling interpreter thru stub. | |
1808 if (callee == cb || callee->is_adapter_blob()) { | |
1809 // static call or optimized virtual | |
1810 if (TraceCallFixup) { | |
1204 | 1811 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1812 moop->print_short_name(tty); |
1813 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1814 } | |
1815 call->set_destination_mt_safe(entry_point); | |
1816 } else { | |
1817 if (TraceCallFixup) { | |
1818 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
1819 moop->print_short_name(tty); | |
1820 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1821 } | |
1822 // assert is too strong could also be resolve destinations. | |
1823 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
1824 } | |
1825 } else { | |
1826 if (TraceCallFixup) { | |
1204 | 1827 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1828 moop->print_short_name(tty); |
1829 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1830 } | |
1831 } | |
1832 } | |
1833 } | |
1834 IRT_END | |
1835 | |
1836 | |
1837 // same as JVM_Arraycopy, but called directly from compiled code | |
1838 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
1839 oopDesc* dest, jint dest_pos, | |
1840 jint length, | |
1841 JavaThread* thread)) { | |
1842 #ifndef PRODUCT | |
1843 _slow_array_copy_ctr++; | |
1844 #endif | |
1845 // Check if we have null pointers | |
1846 if (src == NULL || dest == NULL) { | |
1847 THROW(vmSymbols::java_lang_NullPointerException()); | |
1848 } | |
1849 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
1850 // even though the copy_array API also performs dynamic checks to ensure | |
1851 // that src and dest are truly arrays (and are conformable). | |
1852 // The copy_array mechanism is awkward and could be removed, but | |
1853 // the compilers don't call this function except as a last resort, | |
1854 // so it probably doesn't matter. | |
6983 | 1855 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
0 | 1856 (arrayOopDesc*)dest, dest_pos, |
1857 length, thread); | |
1858 } | |
1859 JRT_END | |
1860 | |
1861 char* SharedRuntime::generate_class_cast_message( | |
1862 JavaThread* thread, const char* objName) { | |
1863 | |
1864 // Get target class name from the checkcast instruction | |
1865 vframeStream vfst(thread, true); | |
1866 assert(!vfst.at_end(), "Java frame must exist"); | |
2142 | 1867 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
6983 | 1868 Klass* targetKlass = vfst.method()->constants()->klass_at( |
1869 cc.index(), thread); | |
0 | 1870 return generate_class_cast_message(objName, targetKlass->external_name()); |
1871 } | |
1872 | |
1873 char* SharedRuntime::generate_class_cast_message( | |
710 | 1874 const char* objName, const char* targetKlassName, const char* desc) { |
0 | 1875 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
1876 | |
53 | 1877 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 1878 if (NULL == message) { |
53 | 1879 // Shouldn't happen, but don't cause even more problems if it does |
0 | 1880 message = const_cast<char*>(objName); |
1881 } else { | |
1882 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
1883 } | |
1884 return message; | |
1885 } | |
1886 | |
1887 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
1888 (void) JavaThread::current()->reguard_stack(); | |
1889 JRT_END | |
1890 | |
1891 | |
1892 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
1893 #ifndef PRODUCT | |
1894 int SharedRuntime::_monitor_enter_ctr=0; | |
1895 #endif | |
1896 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
1897 oop obj(_obj); | |
1898 #ifndef PRODUCT | |
1899 _monitor_enter_ctr++; // monitor enter slow | |
1900 #endif | |
1901 if (PrintBiasedLockingStatistics) { | |
1902 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
1903 } | |
1904 Handle h_obj(THREAD, obj); | |
1905 if (UseBiasedLocking) { | |
1906 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
1907 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
1908 } else { | |
1909 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
1910 } | |
1911 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
1912 JRT_END | |
1913 | |
1914 #ifndef PRODUCT | |
1915 int SharedRuntime::_monitor_exit_ctr=0; | |
1916 #endif | |
1917 // Handles the uncommon cases of monitor unlocking in compiled code | |
1918 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
1919 oop obj(_obj); | |
1920 #ifndef PRODUCT | |
1921 _monitor_exit_ctr++; // monitor exit slow | |
1922 #endif | |
1923 Thread* THREAD = JavaThread::current(); | |
1924 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
1925 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
1926 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
1927 #undef MIGHT_HAVE_PENDING | |
1928 #ifdef MIGHT_HAVE_PENDING | |
1929 // Save and restore any pending_exception around the exception mark. | |
1930 // While the slow_exit must not throw an exception, we could come into | |
1931 // this routine with one set. | |
1932 oop pending_excep = NULL; | |
1933 const char* pending_file; | |
1934 int pending_line; | |
1935 if (HAS_PENDING_EXCEPTION) { | |
1936 pending_excep = PENDING_EXCEPTION; | |
1937 pending_file = THREAD->exception_file(); | |
1938 pending_line = THREAD->exception_line(); | |
1939 CLEAR_PENDING_EXCEPTION; | |
1940 } | |
1941 #endif /* MIGHT_HAVE_PENDING */ | |
1942 | |
1943 { | |
1944 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
1945 EXCEPTION_MARK; | |
1946 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
1947 } | |
1948 | |
1949 #ifdef MIGHT_HAVE_PENDING | |
1950 if (pending_excep != NULL) { | |
1951 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
1952 } | |
1953 #endif /* MIGHT_HAVE_PENDING */ | |
1954 JRT_END | |
1955 | |
1956 #ifndef PRODUCT | |
1957 | |
1958 void SharedRuntime::print_statistics() { | |
1959 ttyLocker ttyl; | |
1960 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
1961 | |
1962 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
1963 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
1964 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
1965 | |
1966 SharedRuntime::print_ic_miss_histogram(); | |
1967 | |
1968 if (CountRemovableExceptions) { | |
1969 if (_nof_removable_exceptions > 0) { | |
1970 Unimplemented(); // this counter is not yet incremented | |
1971 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
1972 } | |
1973 } | |
1974 | |
1975 // Dump the JRT_ENTRY counters | |
1976 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
1977 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
1978 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
1979 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
1980 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
1981 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
1982 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
1983 | |
1984 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
1985 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
1986 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
1987 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
1988 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
1989 | |
1990 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
1991 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
1992 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
1993 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
1994 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
1995 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
1996 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
1997 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
1998 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
1999 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
2000 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
2001 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
2002 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
2003 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
2004 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
2005 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
2006 | |
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2007 AdapterHandlerLibrary::print_statistics(); |
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2008 |
0 | 2009 if (xtty != NULL) xtty->tail("statistics"); |
2010 } | |
2011 | |
2012 inline double percent(int x, int y) { | |
2013 return 100.0 * x / MAX2(y, 1); | |
2014 } | |
2015 | |
2016 class MethodArityHistogram { | |
2017 public: | |
2018 enum { MAX_ARITY = 256 }; | |
2019 private: | |
2020 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
2021 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
2022 static int _max_arity; // max. arity seen | |
2023 static int _max_size; // max. arg size seen | |
2024 | |
2025 static void add_method_to_histogram(nmethod* nm) { | |
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2026 Method* m = nm->method(); |
0 | 2027 ArgumentCount args(m->signature()); |
2028 int arity = args.size() + (m->is_static() ? 0 : 1); | |
2029 int argsize = m->size_of_parameters(); | |
2030 arity = MIN2(arity, MAX_ARITY-1); | |
2031 argsize = MIN2(argsize, MAX_ARITY-1); | |
2032 int count = nm->method()->compiled_invocation_count(); | |
2033 _arity_histogram[arity] += count; | |
2034 _size_histogram[argsize] += count; | |
2035 _max_arity = MAX2(_max_arity, arity); | |
2036 _max_size = MAX2(_max_size, argsize); | |
2037 } | |
2038 | |
2039 void print_histogram_helper(int n, int* histo, const char* name) { | |
2040 const int N = MIN2(5, n); | |
2041 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2042 double sum = 0; | |
2043 double weighted_sum = 0; | |
2044 int i; | |
2045 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
2046 double rest = sum; | |
2047 double percent = sum / 100; | |
2048 for (i = 0; i <= N; i++) { | |
2049 rest -= histo[i]; | |
2050 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
2051 } | |
2052 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
2053 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
2054 } | |
2055 | |
2056 void print_histogram() { | |
2057 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2058 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
2059 tty->print_cr("\nSame for parameter size (in words):"); | |
2060 print_histogram_helper(_max_size, _size_histogram, "size"); | |
2061 tty->cr(); | |
2062 } | |
2063 | |
2064 public: | |
2065 MethodArityHistogram() { | |
2066 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
2067 _max_arity = _max_size = 0; | |
2068 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
2069 CodeCache::nmethods_do(add_method_to_histogram); | |
2070 print_histogram(); | |
2071 } | |
2072 }; | |
2073 | |
2074 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
2075 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
2076 int MethodArityHistogram::_max_arity; | |
2077 int MethodArityHistogram::_max_size; | |
2078 | |
2079 void SharedRuntime::print_call_statistics(int comp_total) { | |
2080 tty->print_cr("Calls from compiled code:"); | |
2081 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
2082 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
2083 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
2084 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
2085 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
2086 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
2087 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
2088 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
2089 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
2090 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
2091 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
2092 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
2093 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
2094 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
2095 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
2096 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
2097 tty->cr(); | |
2098 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
2099 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
2100 tty->print_cr(" %% in nested categories are relative to their category"); | |
2101 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
2102 tty->cr(); | |
2103 | |
2104 MethodArityHistogram h; | |
2105 } | |
2106 #endif | |
2107 | |
2108 | |
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2109 // A simple wrapper class around the calling convention information |
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2110 // that allows sharing of adapters for the same calling convention. |
6197 | 2111 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2112 private: |
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2113 enum { |
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2114 _basic_type_bits = 4, |
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2115 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2116 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2117 _compact_int_count = 3 |
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2118 }; |
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2119 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2120 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2121 |
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2122 union { |
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2123 int _compact[_compact_int_count]; |
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2124 int* _fingerprint; |
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2125 } _value; |
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2126 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2127 // Otherwise _value._fingerprint is the array. |
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2128 |
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2129 // Remap BasicTypes that are handled equivalently by the adapters. |
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2130 // These are correct for the current system but someday it might be |
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2131 // necessary to make this mapping platform dependent. |
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2132 static int adapter_encoding(BasicType in) { |
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2133 switch(in) { |
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2134 case T_BOOLEAN: |
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2135 case T_BYTE: |
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2136 case T_SHORT: |
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2137 case T_CHAR: |
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2138 // There are all promoted to T_INT in the calling convention |
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2139 return T_INT; |
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2140 |
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2141 case T_OBJECT: |
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2142 case T_ARRAY: |
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2143 // In other words, we assume that any register good enough for |
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2144 // an int or long is good enough for a managed pointer. |
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2145 #ifdef _LP64 |
1506 | 2146 return T_LONG; |
1207
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|
2147 #else |
1506 | 2148 return T_INT; |
1207
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|
2149 #endif |
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|
2150 |
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|
2151 case T_INT: |
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diff
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|
2152 case T_LONG: |
74c848d437ab
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|
2153 case T_FLOAT: |
74c848d437ab
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diff
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|
2154 case T_DOUBLE: |
74c848d437ab
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parents:
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diff
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|
2155 case T_VOID: |
74c848d437ab
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|
2156 return in; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
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|
2157 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2158 default: |
74c848d437ab
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diff
changeset
|
2159 ShouldNotReachHere(); |
74c848d437ab
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|
2160 return T_CONFLICT; |
1187
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|
2161 } |
cf0685d550f1
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|
2162 } |
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|
2163 |
1207
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|
2164 public: |
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|
2165 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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|
2166 // The fingerprint is based on the BasicType signature encoded |
3841
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|
2167 // into an array of ints with eight entries per int. |
1207
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|
2168 int* ptr; |
6266
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|
2169 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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|
2170 if (len <= _compact_int_count) { |
1d7922586cf6
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|
2171 assert(_compact_int_count == 3, "else change next line"); |
1207
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|
2172 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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|
2173 // Storing the signature encoded as signed chars hits about 98% |
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|
2174 // of the time. |
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|
2175 _length = -len; |
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|
2176 ptr = _value._compact; |
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|
2177 } else { |
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|
2178 _length = len; |
6197 | 2179 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
1207
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|
2180 ptr = _value._fingerprint; |
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|
2181 } |
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|
2182 |
3841
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|
2183 // Now pack the BasicTypes with 8 per int |
1207
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|
2184 int sig_index = 0; |
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|
2185 for (int index = 0; index < len; index++) { |
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|
2186 int value = 0; |
6266
1d7922586cf6
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|
2187 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2188 int bt = ((sig_index < total_args_passed) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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|
2189 ? adapter_encoding(sig_bt[sig_index++]) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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parents:
6197
diff
changeset
|
2190 : 0); |
1d7922586cf6
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parents:
6197
diff
changeset
|
2191 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
1d7922586cf6
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6197
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changeset
|
2192 value = (value << _basic_type_bits) | bt; |
1207
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|
2193 } |
74c848d437ab
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|
2194 ptr[index] = value; |
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|
2195 } |
1187
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|
2196 } |
cf0685d550f1
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parents:
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diff
changeset
|
2197 |
cf0685d550f1
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diff
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|
2198 ~AdapterFingerPrint() { |
cf0685d550f1
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|
2199 if (_length > 0) { |
6197 | 2200 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
1187
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|
2201 } |
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parents:
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diff
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|
2202 } |
cf0685d550f1
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diff
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|
2203 |
1207
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|
2204 int value(int index) { |
1187
cf0685d550f1
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parents:
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diff
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|
2205 if (_length < 0) { |
cf0685d550f1
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parents:
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diff
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|
2206 return _value._compact[index]; |
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6911204: generated adapters with large signatures can fill up the code cache
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|
2207 } |
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diff
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|
2208 return _value._fingerprint[index]; |
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changeset
|
2209 } |
cf0685d550f1
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never
parents:
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diff
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|
2210 int length() { |
cf0685d550f1
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parents:
1142
diff
changeset
|
2211 if (_length < 0) return -_length; |
cf0685d550f1
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never
parents:
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diff
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|
2212 return _length; |
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parents:
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|
2213 } |
cf0685d550f1
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parents:
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diff
changeset
|
2214 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2215 bool is_compact() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
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|
2216 return _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
|
2217 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2218 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2219 unsigned int compute_hash() { |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
diff
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|
2220 int hash = 0; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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1142
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|
2221 for (int i = 0; i < length(); i++) { |
1207
74c848d437ab
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|
2222 int v = value(i); |
1187
cf0685d550f1
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1142
diff
changeset
|
2223 hash = (hash << 8) ^ v ^ (hash >> 5); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
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|
2224 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2225 return (unsigned int)hash; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2226 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2227 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2228 const char* as_string() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2229 stringStream st; |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2230 st.print("0x"); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2231 for (int i = 0; i < length(); i++) { |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2232 st.print("%08x", value(i)); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
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|
2233 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2234 return st.as_string(); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2235 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2236 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2237 bool equals(AdapterFingerPrint* other) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2238 if (other->_length != _length) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2239 return false; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2240 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2241 if (_length < 0) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2242 assert(_compact_int_count == 3, "else change next line"); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2243 return _value._compact[0] == other->_value._compact[0] && |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
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|
2244 _value._compact[1] == other->_value._compact[1] && |
74c848d437ab
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|
2245 _value._compact[2] == other->_value._compact[2]; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2246 } else { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2247 for (int i = 0; i < _length; i++) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2248 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
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|
2249 return false; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2250 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2251 } |
cf0685d550f1
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diff
changeset
|
2252 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2253 return true; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2254 } |
cf0685d550f1
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diff
changeset
|
2255 }; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2256 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2257 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2258 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
6197 | 2259 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2260 friend class AdapterHandlerTableIterator; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2261 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2262 private: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2263 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2264 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2265 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
|
2266 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
|
2267 static int _equals; // number of buckets checked with matching hash |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
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|
2268 static int _hits; // number of successful lookups |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2269 static int _compact; // number of equals calls with compact signature |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2270 #endif |
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 AdapterHandlerEntry* bucket(int i) { |
6197 | 2273 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2274 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2275 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2276 public: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2277 AdapterHandlerTable() |
6197 | 2278 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2279 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2280 // 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
|
2281 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
6197 | 2282 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
|
2283 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
|
2284 return entry; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
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|
2285 } |
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|
2286 |
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|
2287 // Insert an entry into the table |
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|
2288 void add(AdapterHandlerEntry* entry) { |
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|
2289 int index = hash_to_index(entry->hash()); |
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|
2290 add_entry(index, entry); |
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|
2291 } |
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|
2292 |
1207
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|
2293 void free_entry(AdapterHandlerEntry* entry) { |
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|
2294 entry->deallocate(); |
6197 | 2295 BasicHashtable<mtCode>::free_entry(entry); |
1207
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|
2296 } |
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|
2297 |
1187
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|
2298 // Find a entry with the same fingerprint if it exists |
1207
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|
2299 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
1263
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|
2300 NOT_PRODUCT(_lookups++); |
1207
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|
2301 AdapterFingerPrint fp(total_args_passed, sig_bt); |
1187
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|
2302 unsigned int hash = fp.compute_hash(); |
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|
2303 int index = hash_to_index(hash); |
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|
2304 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
1263
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2305 NOT_PRODUCT(_buckets++); |
1187
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2306 if (e->hash() == hash) { |
1263
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|
2307 NOT_PRODUCT(_equals++); |
1187
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|
2308 if (fp.equals(e->fingerprint())) { |
1263
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|
2309 #ifndef PRODUCT |
1187
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2310 if (fp.is_compact()) _compact++; |
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2311 _hits++; |
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|
2312 #endif |
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|
2313 return e; |
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|
2314 } |
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|
2315 } |
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|
2316 } |
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|
2317 return NULL; |
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|
2318 } |
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|
2319 |
1263
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|
2320 #ifndef PRODUCT |
1187
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|
2321 void print_statistics() { |
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|
2322 ResourceMark rm; |
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|
2323 int longest = 0; |
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|
2324 int empty = 0; |
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|
2325 int total = 0; |
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|
2326 int nonempty = 0; |
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|
2327 for (int index = 0; index < table_size(); index++) { |
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|
2328 int count = 0; |
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|
2329 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
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|
2330 count++; |
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|
2331 } |
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|
2332 if (count != 0) nonempty++; |
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|
2333 if (count == 0) empty++; |
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|
2334 if (count > longest) longest = count; |
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|
2335 total += count; |
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|
2336 } |
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|
2337 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
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2338 empty, longest, total, total / (double)nonempty); |
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2339 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
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|
2340 _lookups, _buckets, _equals, _hits, _compact); |
1263
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|
2341 } |
1187
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|
2342 #endif |
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|
2343 }; |
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|
2344 |
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|
2345 |
1263
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diff
changeset
|
2346 #ifndef PRODUCT |
1187
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|
2347 |
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|
2348 int AdapterHandlerTable::_lookups; |
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|
2349 int AdapterHandlerTable::_buckets; |
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|
2350 int AdapterHandlerTable::_equals; |
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diff
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|
2351 int AdapterHandlerTable::_hits; |
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diff
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|
2352 int AdapterHandlerTable::_compact; |
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|
2353 |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2354 #endif |
126ea7725993
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bobv
parents:
1644
diff
changeset
|
2355 |
1187
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|
2356 class AdapterHandlerTableIterator : public StackObj { |
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parents:
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|
2357 private: |
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diff
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|
2358 AdapterHandlerTable* _table; |
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diff
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|
2359 int _index; |
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diff
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|
2360 AdapterHandlerEntry* _current; |
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diff
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|
2361 |
cf0685d550f1
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diff
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|
2362 void scan() { |
cf0685d550f1
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|
2363 while (_index < _table->table_size()) { |
cf0685d550f1
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diff
changeset
|
2364 AdapterHandlerEntry* a = _table->bucket(_index); |
1564 | 2365 _index++; |
1187
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parents:
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|
2366 if (a != NULL) { |
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6911204: generated adapters with large signatures can fill up the code cache
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|
2367 _current = a; |
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6911204: generated adapters with large signatures can fill up the code cache
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|
2368 return; |
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never
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|
2369 } |
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diff
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|
2370 } |
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diff
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|
2371 } |
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never
parents:
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diff
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|
2372 |
cf0685d550f1
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diff
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|
2373 public: |
cf0685d550f1
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diff
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|
2374 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
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|
2375 scan(); |
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|
2376 } |
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diff
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|
2377 bool has_next() { |
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diff
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|
2378 return _current != NULL; |
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diff
changeset
|
2379 } |
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diff
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|
2380 AdapterHandlerEntry* next() { |
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diff
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|
2381 if (_current != NULL) { |
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diff
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|
2382 AdapterHandlerEntry* result = _current; |
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diff
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|
2383 _current = _current->next(); |
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diff
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|
2384 if (_current == NULL) scan(); |
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diff
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|
2385 return result; |
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diff
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|
2386 } else { |
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diff
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|
2387 return NULL; |
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diff
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|
2388 } |
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diff
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|
2389 } |
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|
2390 }; |
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|
2391 |
cf0685d550f1
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|
2392 |
0 | 2393 // --------------------------------------------------------------------------- |
2394 // Implementation of AdapterHandlerLibrary | |
1187
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|
2395 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
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|
2396 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
0 | 2397 const int AdapterHandlerLibrary_size = 16*K; |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2398 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2399 |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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|
2400 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
45463a04ca27
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diff
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|
2401 // Should be called only when AdapterHandlerLibrary_lock is active. |
45463a04ca27
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diff
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|
2402 if (_buffer == NULL) // Initialize lazily |
45463a04ca27
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kvn
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diff
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|
2403 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
45463a04ca27
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kvn
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|
2404 return _buffer; |
45463a04ca27
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kvn
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|
2405 } |
0 | 2406 |
2407 void AdapterHandlerLibrary::initialize() { | |
1187
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|
2408 if (_adapters != NULL) return; |
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|
2409 _adapters = new AdapterHandlerTable(); |
0 | 2410 |
2411 // Create a special handler for abstract methods. Abstract methods | |
2412 // 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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|
2413 // throw AbstractMethodError just in case. |
570aaefce624
8028319: ConflictingDefaultsTest.testReabstract spins when running with -mode invoke and -Xcomp
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diff
changeset
|
2414 // Pass wrong_method_abstract for the c2i transitions to return |
570aaefce624
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morris
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12317
diff
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|
2415 // AbstractMethodError for invalid invocations. |
570aaefce624
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morris
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12317
diff
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|
2416 address wrong_method_abstract = SharedRuntime::get_handle_wrong_method_abstract_stub(); |
1187
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|
2417 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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never
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diff
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|
2418 StubRoutines::throw_AbstractMethodError_entry(), |
13382
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morris
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diff
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|
2419 wrong_method_abstract, wrong_method_abstract); |
0 | 2420 } |
2421 | |
1187
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|
2422 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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diff
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|
2423 address i2c_entry, |
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diff
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|
2424 address c2i_entry, |
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diff
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|
2425 address c2i_unverified_entry) { |
cf0685d550f1
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diff
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|
2426 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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2427 } |
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2428 |
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|
2429 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2430 // Use customized signature handler. Need to lock around updates to |
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|
2431 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2432 // and a single writer: this could be fixed if it becomes a |
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|
2433 // problem). |
0 | 2434 |
2435 // Get the address of the ic_miss handlers before we grab the | |
2436 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
2437 // was caused by the initialization of the stubs happening | |
2438 // while we held the lock and then notifying jvmti while | |
2439 // holding it. This just forces the initialization to be a little | |
2440 // earlier. | |
2441 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
2442 assert(ic_miss != NULL, "must have handler"); | |
2443 | |
1187
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|
2444 ResourceMark rm; |
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|
2445 |
1748 | 2446 NOT_PRODUCT(int insts_size); |
14198 | 2447 AdapterBlob* new_adapter = NULL; |
742
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2448 AdapterHandlerEntry* entry = NULL; |
1187
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|
2449 AdapterFingerPrint* fingerprint = NULL; |
0 | 2450 { |
2451 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2452 // make sure data structure is initialized | |
2453 initialize(); | |
2454 | |
2455 if (method->is_abstract()) { | |
1187
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|
2456 return _abstract_method_handler; |
0 | 2457 } |
2458 | |
1187
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2459 // Fill in the signature array, for the calling-convention call. |
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2460 int total_args_passed = method->size_of_parameters(); // All args on stack |
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2461 |
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|
2462 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2463 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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|
2464 int i = 0; |
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2465 if (!method->is_static()) // Pass in receiver first |
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|
2466 sig_bt[i++] = T_OBJECT; |
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|
2467 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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|
2468 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2469 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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2470 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2471 } |
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|
2472 assert(i == total_args_passed, ""); |
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2473 |
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|
2474 // Lookup method signature's fingerprint |
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|
2475 entry = _adapters->lookup(total_args_passed, sig_bt); |
1187
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|
2476 |
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|
2477 #ifdef ASSERT |
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|
2478 AdapterHandlerEntry* shared_entry = NULL; |
14198 | 2479 // Start adapter sharing verification only after the VM is booted. |
2480 if (VerifyAdapterSharing && (entry != NULL)) { | |
1207
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|
2481 shared_entry = entry; |
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|
2482 entry = NULL; |
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|
2483 } |
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|
2484 #endif |
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|
2485 |
1187
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|
2486 if (entry != NULL) { |
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2487 return entry; |
0 | 2488 } |
2489 | |
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2490 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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|
2491 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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|
2492 |
1187
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2493 // Make a C heap allocated version of the fingerprint to store in the adapter |
1207
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|
2494 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
1187
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|
2495 |
14198 | 2496 // StubRoutines::code2() is initialized after this function can be called. As a result, |
2497 // VerifyAdapterCalls and VerifyAdapterSharing can fail if we re-use code that generated | |
2498 // prior to StubRoutines::code2() being set. Checks refer to checks generated in an I2C | |
2499 // stub that ensure that an I2C stub is called from an interpreter frame. | |
2500 bool contains_all_checks = StubRoutines::code2() != NULL; | |
2501 | |
0 | 2502 // Create I2C & C2I handlers |
1299
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2503 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
742
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2504 if (buf != NULL) { |
1748 | 2505 CodeBuffer buffer(buf); |
742
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|
2506 short buffer_locs[20]; |
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|
2507 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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|
2508 sizeof(buffer_locs)/sizeof(relocInfo)); |
14198 | 2509 |
742
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|
2510 MacroAssembler _masm(&buffer); |
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|
2511 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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|
2512 total_args_passed, |
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|
2513 comp_args_on_stack, |
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|
2514 sig_bt, |
1187
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|
2515 regs, |
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|
2516 fingerprint); |
1207
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|
2517 #ifdef ASSERT |
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|
2518 if (VerifyAdapterSharing) { |
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|
2519 if (shared_entry != NULL) { |
14198 | 2520 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size()), "code must match"); |
1207
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|
2521 // Release the one just created and return the original |
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|
2522 _adapters->free_entry(entry); |
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|
2523 return shared_entry; |
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|
2524 } else { |
14198 | 2525 entry->save_code(buf->code_begin(), buffer.insts_size()); |
1207
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|
2526 } |
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|
2527 } |
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|
2528 #endif |
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|
2529 |
14198 | 2530 new_adapter = AdapterBlob::create(&buffer); |
1748 | 2531 NOT_PRODUCT(insts_size = buffer.insts_size()); |
742
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|
2532 } |
14198 | 2533 if (new_adapter == NULL) { |
28 | 2534 // CodeCache is full, disable compilation |
2535 // Ought to log this but compile log is only per compile thread | |
2536 // and we're some non descript Java thread. | |
1202 | 2537 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
2538 CompileBroker::handle_full_code_cache(); | |
1187
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|
2539 return NULL; // Out of CodeCache space |
28 | 2540 } |
14198 | 2541 entry->relocate(new_adapter->content_begin()); |
0 | 2542 #ifndef PRODUCT |
2543 // debugging suppport | |
6266
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|
2544 if (PrintAdapterHandlers || PrintStubCode) { |
6796
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|
2545 ttyLocker ttyl; |
6266
1d7922586cf6
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diff
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|
2546 entry->print_adapter_on(tty); |
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|
2547 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
1187
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|
2548 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
6266
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|
2549 method->signature()->as_C_string(), insts_size); |
0 | 2550 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
6266
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|
2551 if (Verbose || PrintStubCode) { |
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|
2552 address first_pc = entry->base_address(); |
6796
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|
2553 if (first_pc != NULL) { |
6266
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|
2554 Disassembler::decode(first_pc, first_pc + insts_size); |
6796
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|
2555 tty->cr(); |
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|
2556 } |
6266
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|
2557 } |
0 | 2558 } |
2559 #endif | |
14198 | 2560 // Add the entry only if the entry contains all required checks (see sharedRuntime_xxx.cpp) |
2561 // The checks are inserted only if -XX:+VerifyAdapterCalls is specified. | |
2562 if (contains_all_checks || !VerifyAdapterCalls) { | |
2563 _adapters->add(entry); | |
2564 } | |
0 | 2565 } |
2566 // Outside of the lock | |
14198 | 2567 if (new_adapter != NULL) { |
0 | 2568 char blob_id[256]; |
2569 jio_snprintf(blob_id, | |
2570 sizeof(blob_id), | |
1187
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|
2571 "%s(%s)@" PTR_FORMAT, |
14198 | 2572 new_adapter->name(), |
1187
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|
2573 fingerprint->as_string(), |
14198 | 2574 new_adapter->content_begin()); |
2575 Forte::register_stub(blob_id, new_adapter->content_begin(),new_adapter->content_end()); | |
0 | 2576 |
2577 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
14198 | 2578 JvmtiExport::post_dynamic_code_generated(blob_id, new_adapter->content_begin(), new_adapter->content_end()); |
0 | 2579 } |
2580 } | |
1187
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|
2581 return entry; |
0 | 2582 } |
2583 | |
6266
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|
2584 address AdapterHandlerEntry::base_address() { |
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|
2585 address base = _i2c_entry; |
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|
2586 if (base == NULL) base = _c2i_entry; |
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|
2587 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
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|
2588 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
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|
2589 return base; |
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|
2590 } |
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|
2591 |
0 | 2592 void AdapterHandlerEntry::relocate(address new_base) { |
6266
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|
2593 address old_base = base_address(); |
1d7922586cf6
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|
2594 assert(old_base != NULL, ""); |
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|
2595 ptrdiff_t delta = new_base - old_base; |
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|
2596 if (_i2c_entry != NULL) |
0 | 2597 _i2c_entry += delta; |
6266
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|
2598 if (_c2i_entry != NULL) |
0 | 2599 _c2i_entry += delta; |
6266
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|
2600 if (_c2i_unverified_entry != NULL) |
0 | 2601 _c2i_unverified_entry += delta; |
6266
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|
2602 assert(base_address() == new_base, ""); |
0 | 2603 } |
2604 | |
1207
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|
2605 |
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|
2606 void AdapterHandlerEntry::deallocate() { |
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|
2607 delete _fingerprint; |
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|
2608 #ifdef ASSERT |
6197 | 2609 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
1207
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|
2610 #endif |
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|
2611 } |
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|
2612 |
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|
2613 |
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|
2614 #ifdef ASSERT |
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|
2615 // Capture the code before relocation so that it can be compared |
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|
2616 // against other versions. If the code is captured after relocation |
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|
2617 // then relative instructions won't be equivalent. |
14198 | 2618 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length) { |
6197 | 2619 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
14198 | 2620 _saved_code_length = length; |
1207
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|
2621 memcpy(_saved_code, buffer, length); |
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|
2622 } |
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|
2623 |
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|
2624 |
14198 | 2625 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length) { |
2626 if (length != _saved_code_length) { | |
1207
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|
2627 return false; |
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|
2628 } |
14198 | 2629 |
2630 return (memcmp(buffer, _saved_code, length) == 0) ? true : false; | |
1207
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|
2631 } |
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|
2632 #endif |
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|
2633 |
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|
2634 |
14236 | 2635 /** |
2636 * Create a native wrapper for this native method. The wrapper converts the | |
2637 * Java-compiled calling convention to the native convention, handles | |
2638 * arguments, and transitions to native. On return from the native we transition | |
2639 * back to java blocking if a safepoint is in progress. | |
2640 */ | |
2641 void AdapterHandlerLibrary::create_native_wrapper(methodHandle method) { | |
0 | 2642 ResourceMark rm; |
2643 nmethod* nm = NULL; | |
2644 | |
6266
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2645 assert(method->is_native(), "must be native"); |
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
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2646 assert(method->is_method_handle_intrinsic() || |
1d7922586cf6
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2647 method->has_native_function(), "must have something valid to call!"); |
0 | 2648 |
2649 { | |
14236 | 2650 // Perform the work while holding the lock, but perform any printing outside the lock |
0 | 2651 MutexLocker mu(AdapterHandlerLibrary_lock); |
2652 // See if somebody beat us to it | |
2653 nm = method->code(); | |
14236 | 2654 if (nm != NULL) { |
2655 return; | |
0 | 2656 } |
2657 | |
14236 | 2658 const int compile_id = CompileBroker::assign_compile_id(method, CompileBroker::standard_entry_bci); |
2659 assert(compile_id > 0, "Must generate native wrapper"); | |
2660 | |
2661 | |
742
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|
2662 ResourceMark rm; |
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|
2663 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
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2664 if (buf != NULL) { |
1748 | 2665 CodeBuffer buffer(buf); |
742
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|
2666 double locs_buf[20]; |
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|
2667 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
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|
2668 MacroAssembler _masm(&buffer); |
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|
2669 |
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|
2670 // Fill in the signature array, for the calling-convention call. |
6790
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7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2671 const int total_args_passed = method->size_of_parameters(); |
2cb2f30450c7
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|
2672 |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2673 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2674 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
742
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2675 int i=0; |
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|
2676 if( !method->is_static() ) // Pass in receiver first |
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|
2677 sig_bt[i++] = T_OBJECT; |
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|
2678 SignatureStream ss(method->signature()); |
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|
2679 for( ; !ss.at_return_type(); ss.next()) { |
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|
2680 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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|
2681 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
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|
2682 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2683 } |
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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|
2684 assert(i == total_args_passed, ""); |
742
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|
2685 BasicType ret_type = ss.type(); |
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|
2686 |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2687 // Now get the compiled-Java layout as input (or output) arguments. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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|
2688 // NOTE: Stubs for compiled entry points of method handle intrinsics |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2689 // are just trampolines so the argument registers must be outgoing ones. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2690 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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|
2691 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
742
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|
2692 |
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|
2693 // Generate the compiled-to-native wrapper code |
14236 | 2694 nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type); |
2695 | |
2696 if (nm != NULL) { | |
2697 method->set_code(method, nm); | |
2698 } | |
0 | 2699 } |
14236 | 2700 } // Unlock AdapterHandlerLibrary_lock |
2701 | |
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
parents:
1681
diff
changeset
|
2702 |
0 | 2703 // Install the generated code. |
2704 if (nm != NULL) { | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2705 if (PrintCompilation) { |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2706 ttyLocker ttyl; |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2707 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
parents:
2321
diff
changeset
|
2708 } |
0 | 2709 nm->post_compiled_method_load_event(); |
2710 } else { | |
2711 // CodeCache is full, disable compilation | |
1202 | 2712 CompileBroker::handle_full_code_cache(); |
0 | 2713 } |
2714 } | |
2715 | |
4873
0382d2b469b2
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never
parents:
4872
diff
changeset
|
2716 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
|
2717 assert(thread == JavaThread::current(), "must be"); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2718 // 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
|
2719 // _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
|
2720 // 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
|
2721 // until needs_gc has been cleared. |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2722 if (thread->in_critical()) { |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2723 return; |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2724 } |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2725 // 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
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parents:
4872
diff
changeset
|
2726 GC_locker::lock_critical(thread); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2727 GC_locker::unlock_critical(thread); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
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|
2728 JRT_END |
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|
2729 |
116
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diff
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|
2730 #ifdef HAVE_DTRACE_H |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2731 // 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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|
2732 // 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
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|
2733 // (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
|
2734 // probe is enabled). The returns to the caller. Since this all looks like a |
018d5b58dd4f
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diff
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|
2735 // leaf no thread transition is needed. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2736 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2737 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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diff
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|
2738 ResourceMark rm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2739 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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|
2740 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2741 if (PrintCompilation) { |
018d5b58dd4f
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diff
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|
2742 ttyLocker ttyl; |
018d5b58dd4f
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diff
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|
2743 tty->print("--- n%s "); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2744 method->print_short_name(tty); |
018d5b58dd4f
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diff
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|
2745 if (method->is_static()) { |
018d5b58dd4f
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diff
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|
2746 tty->print(" (static)"); |
018d5b58dd4f
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diff
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|
2747 } |
018d5b58dd4f
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diff
changeset
|
2748 tty->cr(); |
018d5b58dd4f
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diff
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|
2749 } |
018d5b58dd4f
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diff
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|
2750 |
018d5b58dd4f
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diff
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|
2751 { |
018d5b58dd4f
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diff
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|
2752 // perform the work while holding the lock, but perform any printing |
018d5b58dd4f
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diff
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|
2753 // outside the lock |
018d5b58dd4f
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diff
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|
2754 MutexLocker mu(AdapterHandlerLibrary_lock); |
018d5b58dd4f
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diff
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|
2755 // See if somebody beat us to it |
018d5b58dd4f
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diff
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|
2756 nm = method->code(); |
018d5b58dd4f
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diff
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|
2757 if (nm) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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62
diff
changeset
|
2758 return nm; |
018d5b58dd4f
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diff
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|
2759 } |
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|
2760 |
742
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|
2761 ResourceMark rm; |
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|
2762 |
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|
2763 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
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|
2764 if (buf != NULL) { |
1748 | 2765 CodeBuffer buffer(buf); |
742
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|
2766 // Need a few relocation entries |
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|
2767 double locs_buf[20]; |
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|
2768 buffer.insts()->initialize_shared_locs( |
116
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diff
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|
2769 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
742
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|
2770 MacroAssembler _masm(&buffer); |
116
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|
2771 |
742
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|
2772 // Generate the compiled-to-native wrapper code |
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|
2773 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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|
2774 } |
116
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|
2775 } |
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|
2776 return nm; |
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diff
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|
2777 } |
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diff
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|
2778 |
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diff
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|
2779 // the dtrace method needs to convert java lang string to utf8 string. |
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2780 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
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2781 typeArrayOop jlsValue = java_lang_String::value(src); |
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2782 int jlsOffset = java_lang_String::offset(src); |
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2783 int jlsLen = java_lang_String::length(src); |
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2784 jchar* jlsPos = (jlsLen == 0) ? NULL : |
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|
2785 jlsValue->char_at_addr(jlsOffset); |
6831
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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6796
diff
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|
2786 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
116
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2787 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
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|
2788 } |
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|
2789 #endif // ndef HAVE_DTRACE_H |
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2790 |
14418
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|
2791 int SharedRuntime::convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt) { |
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|
2792 int argcnt = in_args_count; |
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|
2793 if (CCallingConventionRequiresIntsAsLongs) { |
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|
2794 for (int in = 0; in < in_args_count; in++) { |
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|
2795 BasicType bt = in_sig_bt[in]; |
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|
2796 switch (bt) { |
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|
2797 case T_BOOLEAN: |
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2798 case T_CHAR: |
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2799 case T_BYTE: |
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2800 case T_SHORT: |
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2801 case T_INT: |
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|
2802 argcnt++; |
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|
2803 break; |
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diff
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|
2804 default: |
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diff
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|
2805 break; |
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diff
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|
2806 } |
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diff
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|
2807 } |
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diff
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|
2808 } else { |
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diff
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|
2809 assert(0, "This should not be needed on this platform"); |
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|
2810 } |
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|
2811 |
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|
2812 return argcnt; |
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|
2813 } |
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|
2814 |
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|
2815 void SharedRuntime::convert_ints_to_longints(int i2l_argcnt, int& in_args_count, |
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|
2816 BasicType*& in_sig_bt, VMRegPair*& in_regs) { |
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|
2817 if (CCallingConventionRequiresIntsAsLongs) { |
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|
2818 VMRegPair *new_in_regs = NEW_RESOURCE_ARRAY(VMRegPair, i2l_argcnt); |
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2819 BasicType *new_in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, i2l_argcnt); |
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|
2820 |
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|
2821 int argcnt = 0; |
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|
2822 for (int in = 0; in < in_args_count; in++, argcnt++) { |
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|
2823 BasicType bt = in_sig_bt[in]; |
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|
2824 VMRegPair reg = in_regs[in]; |
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|
2825 switch (bt) { |
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|
2826 case T_BOOLEAN: |
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|
2827 case T_CHAR: |
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|
2828 case T_BYTE: |
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|
2829 case T_SHORT: |
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|
2830 case T_INT: |
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diff
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|
2831 // Convert (bt) to (T_LONG,bt). |
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|
2832 new_in_sig_bt[argcnt ] = T_LONG; |
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diff
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|
2833 new_in_sig_bt[argcnt+1] = bt; |
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|
2834 assert(reg.first()->is_valid() && !reg.second()->is_valid(), ""); |
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|
2835 new_in_regs[argcnt ].set2(reg.first()); |
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|
2836 new_in_regs[argcnt+1].set_bad(); |
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diff
changeset
|
2837 argcnt++; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
changeset
|
2838 break; |
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goetz
parents:
14396
diff
changeset
|
2839 default: |
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parents:
14396
diff
changeset
|
2840 // No conversion needed. |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
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|
2841 new_in_sig_bt[argcnt] = bt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
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|
2842 new_in_regs[argcnt] = reg; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2843 break; |
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goetz
parents:
14396
diff
changeset
|
2844 } |
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parents:
14396
diff
changeset
|
2845 } |
cfd05ec74089
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14396
diff
changeset
|
2846 assert(argcnt == i2l_argcnt, "must match"); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
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14396
diff
changeset
|
2847 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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parents:
14396
diff
changeset
|
2848 in_regs = new_in_regs; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
changeset
|
2849 in_sig_bt = new_in_sig_bt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
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|
2850 in_args_count = i2l_argcnt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
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diff
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|
2851 } else { |
cfd05ec74089
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diff
changeset
|
2852 assert(0, "This should not be needed on this platform"); |
cfd05ec74089
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diff
changeset
|
2853 } |
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diff
changeset
|
2854 } |
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|
2855 |
0 | 2856 // ------------------------------------------------------------------------- |
2857 // Java-Java calling convention | |
2858 // (what you use when Java calls Java) | |
2859 | |
2860 //------------------------------name_for_receiver---------------------------------- | |
2861 // For a given signature, return the VMReg for parameter 0. | |
2862 VMReg SharedRuntime::name_for_receiver() { | |
2863 VMRegPair regs; | |
2864 BasicType sig_bt = T_OBJECT; | |
2865 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
2866 // Return argument 0 register. In the LP64 build pointers | |
2867 // take 2 registers, but the VM wants only the 'main' name. | |
2868 return regs.first(); | |
2869 } | |
2870 | |
10390 | 2871 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
0 | 2872 // This method is returning a data structure allocating as a |
2873 // ResourceObject, so do not put any ResourceMarks in here. | |
2874 char *s = sig->as_C_string(); | |
2875 int len = (int)strlen(s); | |
10973
ef57c43512d6
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
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10390
diff
changeset
|
2876 s++; len--; // Skip opening paren |
0 | 2877 char *t = s+len; |
2878 while( *(--t) != ')' ) ; // Find close paren | |
2879 | |
2880 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
2881 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
2882 int cnt = 0; | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
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1135
diff
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|
2883 if (has_receiver) { |
0 | 2884 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
2885 } | |
2886 | |
2887 while( s < t ) { | |
2888 switch( *s++ ) { // Switch on signature character | |
2889 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
2890 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
2891 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
2892 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
2893 case 'I': sig_bt[cnt++] = T_INT; break; | |
2894 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
2895 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
2896 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
2897 case 'V': sig_bt[cnt++] = T_VOID; break; | |
2898 case 'L': // Oop | |
2899 while( *s++ != ';' ) ; // Skip signature | |
2900 sig_bt[cnt++] = T_OBJECT; | |
2901 break; | |
2902 case '[': { // Array | |
2903 do { // Skip optional size | |
2904 while( *s >= '0' && *s <= '9' ) s++; | |
2905 } while( *s++ == '[' ); // Nested arrays? | |
2906 // Skip element type | |
2907 if( s[-1] == 'L' ) | |
2908 while( *s++ != ';' ) ; // Skip signature | |
2909 sig_bt[cnt++] = T_ARRAY; | |
2910 break; | |
2911 } | |
2912 default : ShouldNotReachHere(); | |
2913 } | |
2914 } | |
10390 | 2915 |
2916 if (has_appendix) { | |
2917 sig_bt[cnt++] = T_OBJECT; | |
2918 } | |
2919 | |
0 | 2920 assert( cnt < 256, "grow table size" ); |
2921 | |
2922 int comp_args_on_stack; | |
2923 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
2924 | |
2925 // the calling convention doesn't count out_preserve_stack_slots so | |
2926 // we must add that in to get "true" stack offsets. | |
2927 | |
2928 if (comp_args_on_stack) { | |
2929 for (int i = 0; i < cnt; i++) { | |
2930 VMReg reg1 = regs[i].first(); | |
2931 if( reg1->is_stack()) { | |
2932 // Yuck | |
2933 reg1 = reg1->bias(out_preserve_stack_slots()); | |
2934 } | |
2935 VMReg reg2 = regs[i].second(); | |
2936 if( reg2->is_stack()) { | |
2937 // Yuck | |
2938 reg2 = reg2->bias(out_preserve_stack_slots()); | |
2939 } | |
2940 regs[i].set_pair(reg2, reg1); | |
2941 } | |
2942 } | |
2943 | |
2944 // results | |
2945 *arg_size = cnt; | |
2946 return regs; | |
2947 } | |
2948 | |
2949 // OSR Migration Code | |
2950 // | |
2951 // This code is used convert interpreter frames into compiled frames. It is | |
2952 // called from very start of a compiled OSR nmethod. A temp array is | |
2953 // allocated to hold the interesting bits of the interpreter frame. All | |
2954 // active locks are inflated to allow them to move. The displaced headers and | |
14309 | 2955 // active interpreter locals are copied into the temp buffer. Then we return |
0 | 2956 // back to the compiled code. The compiled code then pops the current |
2957 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
2958 // copies the interpreter locals and displaced headers where it wants. | |
2959 // Finally it calls back to free the temp buffer. | |
2960 // | |
2961 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
2962 | |
2963 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
2964 | |
2965 // | |
2966 // This code is dependent on the memory layout of the interpreter local | |
2967 // array and the monitors. On all of our platforms the layout is identical | |
2968 // so this code is shared. If some platform lays the their arrays out | |
2969 // differently then this code could move to platform specific code or | |
2970 // the code here could be modified to copy items one at a time using | |
2971 // frame accessor methods and be platform independent. | |
2972 | |
2973 frame fr = thread->last_frame(); | |
2974 assert( fr.is_interpreted_frame(), "" ); | |
2975 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
2976 | |
2977 // Figure out how many monitors are active. | |
2978 int active_monitor_count = 0; | |
2979 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
2980 kptr < fr.interpreter_frame_monitor_begin(); | |
2981 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
2982 if( kptr->obj() != NULL ) active_monitor_count++; | |
2983 } | |
2984 | |
2985 // QQQ we could place number of active monitors in the array so that compiled code | |
2986 // could double check it. | |
2987 | |
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|
2988 Method* moop = fr.interpreter_frame_method(); |
0 | 2989 int max_locals = moop->max_locals(); |
2990 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
2991 int buf_size_words = max_locals + active_monitor_count*2; | |
6197 | 2992 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
0 | 2993 |
2994 // Copy the locals. Order is preserved so that loading of longs works. | |
2995 // Since there's no GC I can copy the oops blindly. | |
2996 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
1506 | 2997 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
0 | 2998 (HeapWord*)&buf[0], |
2999 max_locals); | |
3000 | |
3001 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
3002 int i = max_locals; | |
3003 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
3004 kptr2 < fr.interpreter_frame_monitor_begin(); | |
3005 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
3006 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
3007 BasicLock *lock = kptr2->lock(); | |
3008 // Inflate so the displaced header becomes position-independent | |
3009 if (lock->displaced_header()->is_unlocked()) | |
3010 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
3011 // Now the displaced header is free to move | |
3012 buf[i++] = (intptr_t)lock->displaced_header(); | |
12316
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3013 buf[i++] = cast_from_oop<intptr_t>(kptr2->obj()); |
0 | 3014 } |
3015 } | |
3016 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
3017 | |
3018 return buf; | |
3019 JRT_END | |
3020 | |
3021 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
6197 | 3022 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
0 | 3023 JRT_END |
3024 | |
3025 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
1187
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3026 AdapterHandlerTableIterator iter(_adapters); |
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3027 while (iter.has_next()) { |
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3028 AdapterHandlerEntry* a = iter.next(); |
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3029 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
0 | 3030 } |
3031 return false; | |
3032 } | |
3033 | |
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3034 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
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|
3035 AdapterHandlerTableIterator iter(_adapters); |
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3036 while (iter.has_next()) { |
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3037 AdapterHandlerEntry* a = iter.next(); |
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3038 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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3039 st->print("Adapter for signature: "); |
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|
3040 a->print_adapter_on(tty); |
0 | 3041 return; |
3042 } | |
3043 } | |
3044 assert(false, "Should have found handler"); | |
3045 } | |
1187
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3046 |
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3047 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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3048 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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|
3049 (intptr_t) this, fingerprint()->as_string(), |
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3050 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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|
3051 |
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|
3052 } |
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|
3053 |
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|
3054 #ifndef PRODUCT |
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diff
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|
3055 |
1187
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3056 void AdapterHandlerLibrary::print_statistics() { |
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|
3057 _adapters->print_statistics(); |
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3058 } |
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3059 |
0 | 3060 #endif /* PRODUCT */ |