Mercurial > hg > truffle
annotate src/share/vm/runtime/sharedRuntime.cpp @ 8500:992f62c457b0
-More bug fixes
author | Christos Kotselidis <christos.kotselidis@oracle.com> |
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date | Tue, 05 Mar 2013 18:53:26 +0100 |
parents | 989155e2d07a |
children | 5fc51c1ecdeb |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/compiledIC.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
32 #include "compiler/compileBroker.hpp" | |
33 #include "compiler/compilerOracle.hpp" | |
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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" | |
59 #include "utilities/xmlstream.hpp" | |
60 #ifdef TARGET_ARCH_x86 | |
61 # include "nativeInst_x86.hpp" | |
62 # include "vmreg_x86.inline.hpp" | |
63 #endif | |
64 #ifdef TARGET_ARCH_sparc | |
65 # include "nativeInst_sparc.hpp" | |
66 # include "vmreg_sparc.inline.hpp" | |
67 #endif | |
68 #ifdef TARGET_ARCH_zero | |
69 # include "nativeInst_zero.hpp" | |
70 # include "vmreg_zero.inline.hpp" | |
71 #endif | |
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72 #ifdef TARGET_ARCH_arm |
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73 # include "nativeInst_arm.hpp" |
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74 # include "vmreg_arm.inline.hpp" |
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75 #endif |
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76 #ifdef TARGET_ARCH_ppc |
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77 # include "nativeInst_ppc.hpp" |
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78 # include "vmreg_ppc.inline.hpp" |
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79 #endif |
1972 | 80 #ifdef COMPILER1 |
81 #include "c1/c1_Runtime1.hpp" | |
82 #endif | |
83 | |
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84 // Shared stub locations |
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85 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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86 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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87 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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88 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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89 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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90 |
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91 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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92 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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93 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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94 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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95 |
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96 #ifdef COMPILER2 |
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97 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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98 #endif // COMPILER2 |
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99 |
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100 |
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101 //----------------------------generate_stubs----------------------------------- |
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102 void SharedRuntime::generate_stubs() { |
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103 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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104 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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105 _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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106 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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107 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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108 |
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109 #ifdef COMPILER2 |
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110 // Vectors are generated only by C2. |
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111 if (is_wide_vector(MaxVectorSize)) { |
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112 _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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113 } |
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114 #endif // COMPILER2 |
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115 _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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116 _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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117 |
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118 generate_deopt_blob(); |
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119 |
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120 #ifdef COMPILER2 |
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121 generate_uncommon_trap_blob(); |
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122 #endif // COMPILER2 |
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123 } |
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124 |
0 | 125 #include <math.h> |
126 | |
4006 | 127 #ifndef USDT2 |
0 | 128 HS_DTRACE_PROBE_DECL4(hotspot, object__alloc, Thread*, char*, int, size_t); |
129 HS_DTRACE_PROBE_DECL7(hotspot, method__entry, int, | |
130 char*, int, char*, int, char*, int); | |
131 HS_DTRACE_PROBE_DECL7(hotspot, method__return, int, | |
132 char*, int, char*, int, char*, int); | |
4006 | 133 #endif /* !USDT2 */ |
0 | 134 |
135 // Implementation of SharedRuntime | |
136 | |
137 #ifndef PRODUCT | |
138 // For statistics | |
139 int SharedRuntime::_ic_miss_ctr = 0; | |
140 int SharedRuntime::_wrong_method_ctr = 0; | |
141 int SharedRuntime::_resolve_static_ctr = 0; | |
142 int SharedRuntime::_resolve_virtual_ctr = 0; | |
143 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
144 int SharedRuntime::_implicit_null_throws = 0; | |
145 int SharedRuntime::_implicit_div0_throws = 0; | |
146 int SharedRuntime::_throw_null_ctr = 0; | |
147 | |
148 int SharedRuntime::_nof_normal_calls = 0; | |
149 int SharedRuntime::_nof_optimized_calls = 0; | |
150 int SharedRuntime::_nof_inlined_calls = 0; | |
151 int SharedRuntime::_nof_megamorphic_calls = 0; | |
152 int SharedRuntime::_nof_static_calls = 0; | |
153 int SharedRuntime::_nof_inlined_static_calls = 0; | |
154 int SharedRuntime::_nof_interface_calls = 0; | |
155 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
156 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
157 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
158 int SharedRuntime::_nof_removable_exceptions = 0; | |
159 | |
160 int SharedRuntime::_new_instance_ctr=0; | |
161 int SharedRuntime::_new_array_ctr=0; | |
162 int SharedRuntime::_multi1_ctr=0; | |
163 int SharedRuntime::_multi2_ctr=0; | |
164 int SharedRuntime::_multi3_ctr=0; | |
165 int SharedRuntime::_multi4_ctr=0; | |
166 int SharedRuntime::_multi5_ctr=0; | |
167 int SharedRuntime::_mon_enter_stub_ctr=0; | |
168 int SharedRuntime::_mon_exit_stub_ctr=0; | |
169 int SharedRuntime::_mon_enter_ctr=0; | |
170 int SharedRuntime::_mon_exit_ctr=0; | |
171 int SharedRuntime::_partial_subtype_ctr=0; | |
172 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
173 int SharedRuntime::_jshort_array_copy_ctr=0; | |
174 int SharedRuntime::_jint_array_copy_ctr=0; | |
175 int SharedRuntime::_jlong_array_copy_ctr=0; | |
176 int SharedRuntime::_oop_array_copy_ctr=0; | |
177 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
178 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
179 int SharedRuntime::_generic_array_copy_ctr=0; | |
180 int SharedRuntime::_slow_array_copy_ctr=0; | |
181 int SharedRuntime::_find_handler_ctr=0; | |
182 int SharedRuntime::_rethrow_ctr=0; | |
183 | |
184 int SharedRuntime::_ICmiss_index = 0; | |
185 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
186 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
187 | |
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188 |
0 | 189 void SharedRuntime::trace_ic_miss(address at) { |
190 for (int i = 0; i < _ICmiss_index; i++) { | |
191 if (_ICmiss_at[i] == at) { | |
192 _ICmiss_count[i]++; | |
193 return; | |
194 } | |
195 } | |
196 int index = _ICmiss_index++; | |
197 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
198 _ICmiss_at[index] = at; | |
199 _ICmiss_count[index] = 1; | |
200 } | |
201 | |
202 void SharedRuntime::print_ic_miss_histogram() { | |
203 if (ICMissHistogram) { | |
204 tty->print_cr ("IC Miss Histogram:"); | |
205 int tot_misses = 0; | |
206 for (int i = 0; i < _ICmiss_index; i++) { | |
207 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
208 tot_misses += _ICmiss_count[i]; | |
209 } | |
210 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
211 } | |
212 } | |
213 #endif // PRODUCT | |
214 | |
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215 #ifndef SERIALGC |
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216 |
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217 // G1 write-barrier pre: executed before a pointer store. |
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218 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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219 if (orig == NULL) { |
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220 assert(false, "should be optimized out"); |
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221 return; |
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222 } |
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223 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
342
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224 // store the original value that was in the field reference |
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225 thread->satb_mark_queue().enqueue(orig); |
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226 JRT_END |
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227 |
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228 // G1 write-barrier post: executed after a pointer store. |
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229 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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230 thread->dirty_card_queue().enqueue(card_addr); |
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231 JRT_END |
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232 |
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233 #endif // !SERIALGC |
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234 |
0 | 235 |
236 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
237 return x * y; | |
238 JRT_END | |
239 | |
240 | |
241 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
242 if (x == min_jlong && y == CONST64(-1)) { | |
243 return x; | |
244 } else { | |
245 return x / y; | |
246 } | |
247 JRT_END | |
248 | |
249 | |
250 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
251 if (x == min_jlong && y == CONST64(-1)) { | |
252 return 0; | |
253 } else { | |
254 return x % y; | |
255 } | |
256 JRT_END | |
257 | |
258 | |
259 const juint float_sign_mask = 0x7FFFFFFF; | |
260 const juint float_infinity = 0x7F800000; | |
261 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
262 const julong double_infinity = CONST64(0x7FF0000000000000); | |
263 | |
264 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
265 #ifdef _WIN64 | |
266 // 64-bit Windows on amd64 returns the wrong values for | |
267 // infinity operands. | |
268 union { jfloat f; juint i; } xbits, ybits; | |
269 xbits.f = x; | |
270 ybits.f = y; | |
271 // x Mod Infinity == x unless x is infinity | |
272 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
273 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
274 return x; | |
275 } | |
276 #endif | |
277 return ((jfloat)fmod((double)x,(double)y)); | |
278 JRT_END | |
279 | |
280 | |
281 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
282 #ifdef _WIN64 | |
283 union { jdouble d; julong l; } xbits, ybits; | |
284 xbits.d = x; | |
285 ybits.d = y; | |
286 // x Mod Infinity == x unless x is infinity | |
287 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
288 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
289 return x; | |
290 } | |
291 #endif | |
292 return ((jdouble)fmod((double)x,(double)y)); | |
293 JRT_END | |
294 | |
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295 #ifdef __SOFTFP__ |
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296 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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297 return x + y; |
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298 JRT_END |
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299 |
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300 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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301 return x - y; |
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302 JRT_END |
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303 |
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304 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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305 return x * y; |
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306 JRT_END |
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307 |
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308 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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309 return x / y; |
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310 JRT_END |
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311 |
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312 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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313 return x + y; |
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314 JRT_END |
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315 |
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316 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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317 return x - y; |
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318 JRT_END |
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319 |
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320 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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321 return x * y; |
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322 JRT_END |
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323 |
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324 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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325 return x / y; |
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326 JRT_END |
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327 |
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328 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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329 return (jfloat)x; |
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330 JRT_END |
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331 |
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332 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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333 return (jdouble)x; |
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334 JRT_END |
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335 |
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336 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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337 return (jdouble)x; |
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338 JRT_END |
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339 |
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340 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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341 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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342 JRT_END |
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343 |
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344 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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345 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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346 JRT_END |
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347 |
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348 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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349 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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350 JRT_END |
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351 |
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352 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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353 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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354 JRT_END |
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355 |
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356 // Functions to return the opposite of the aeabi functions for nan. |
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357 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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358 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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359 JRT_END |
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360 |
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361 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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362 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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363 JRT_END |
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364 |
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365 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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366 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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367 JRT_END |
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368 |
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369 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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370 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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371 JRT_END |
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372 |
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373 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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374 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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375 JRT_END |
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376 |
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377 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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378 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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379 JRT_END |
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380 |
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381 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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382 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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383 JRT_END |
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384 |
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385 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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386 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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387 JRT_END |
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388 |
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389 // Intrinsics make gcc generate code for these. |
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390 float SharedRuntime::fneg(float f) { |
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391 return -f; |
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392 } |
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393 |
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394 double SharedRuntime::dneg(double f) { |
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395 return -f; |
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396 } |
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397 |
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398 #endif // __SOFTFP__ |
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399 |
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400 #if defined(__SOFTFP__) || defined(E500V2) |
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401 // Intrinsics make gcc generate code for these. |
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402 double SharedRuntime::dabs(double f) { |
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403 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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404 } |
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405 |
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406 #endif |
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407 |
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408 #if defined(__SOFTFP__) || defined(PPC) |
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409 double SharedRuntime::dsqrt(double f) { |
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410 return sqrt(f); |
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411 } |
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412 #endif |
0 | 413 |
414 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
508
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415 if (g_isnan(x)) |
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416 return 0; |
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417 if (x >= (jfloat) max_jint) |
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418 return max_jint; |
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419 if (x <= (jfloat) min_jint) |
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420 return min_jint; |
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421 return (jint) x; |
0 | 422 JRT_END |
423 | |
424 | |
425 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
508
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426 if (g_isnan(x)) |
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427 return 0; |
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428 if (x >= (jfloat) max_jlong) |
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429 return max_jlong; |
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430 if (x <= (jfloat) min_jlong) |
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431 return min_jlong; |
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432 return (jlong) x; |
0 | 433 JRT_END |
434 | |
435 | |
436 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
508
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437 if (g_isnan(x)) |
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438 return 0; |
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439 if (x >= (jdouble) max_jint) |
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440 return max_jint; |
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441 if (x <= (jdouble) min_jint) |
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442 return min_jint; |
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443 return (jint) x; |
0 | 444 JRT_END |
445 | |
446 | |
447 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
508
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448 if (g_isnan(x)) |
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449 return 0; |
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450 if (x >= (jdouble) max_jlong) |
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451 return max_jlong; |
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452 if (x <= (jdouble) min_jlong) |
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453 return min_jlong; |
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454 return (jlong) x; |
0 | 455 JRT_END |
456 | |
457 | |
458 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
459 return (jfloat)x; | |
460 JRT_END | |
461 | |
462 | |
463 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
464 return (jfloat)x; | |
465 JRT_END | |
466 | |
467 | |
468 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
469 return (jdouble)x; | |
470 JRT_END | |
471 | |
472 // Exception handling accross interpreter/compiler boundaries | |
473 // | |
474 // exception_handler_for_return_address(...) returns the continuation address. | |
475 // The continuation address is the entry point of the exception handler of the | |
476 // previous frame depending on the return address. | |
477 | |
1295 | 478 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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479 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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480 |
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481 // Reset method handle flag. |
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482 thread->set_is_method_handle_return(false); |
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483 |
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484 // The fastest case first |
0 | 485 CodeBlob* blob = CodeCache::find_blob(return_address); |
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486 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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487 if (nm != NULL) { |
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488 // Set flag if return address is a method handle call site. |
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489 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
0 | 490 // native nmethods don't have exception handlers |
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491 assert(!nm->is_native_method(), "no exception handler"); |
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492 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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493 if (nm->is_deopt_pc(return_address)) { |
0 | 494 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
495 } else { | |
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496 return nm->exception_begin(); |
0 | 497 } |
498 } | |
499 | |
500 // Entry code | |
501 if (StubRoutines::returns_to_call_stub(return_address)) { | |
502 return StubRoutines::catch_exception_entry(); | |
503 } | |
504 // Interpreted code | |
505 if (Interpreter::contains(return_address)) { | |
506 return Interpreter::rethrow_exception_entry(); | |
507 } | |
508 | |
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509 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
0 | 510 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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511 |
0 | 512 #ifndef PRODUCT |
513 { ResourceMark rm; | |
514 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
515 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
516 tty->print_cr("b) other problem"); | |
517 } | |
518 #endif // PRODUCT | |
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519 |
0 | 520 ShouldNotReachHere(); |
521 return NULL; | |
522 } | |
523 | |
524 | |
1295 | 525 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
526 return raw_exception_handler_for_return_address(thread, return_address); | |
0 | 527 JRT_END |
528 | |
1295 | 529 |
0 | 530 address SharedRuntime::get_poll_stub(address pc) { |
531 address stub; | |
532 // Look up the code blob | |
533 CodeBlob *cb = CodeCache::find_blob(pc); | |
534 | |
535 // Should be an nmethod | |
536 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
537 | |
538 // Look up the relocation information | |
539 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
540 "safepoint polling: type must be poll" ); | |
541 | |
542 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
543 "Only polling locations are used for safepoint"); | |
544 | |
545 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
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546 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
0 | 547 if (at_poll_return) { |
548 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
549 "polling page return stub not created yet"); | |
1748 | 550 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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551 } else if (has_wide_vectors) { |
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552 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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553 "polling page vectors safepoint stub not created yet"); |
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554 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
0 | 555 } else { |
556 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
557 "polling page safepoint stub not created yet"); | |
1748 | 558 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
0 | 559 } |
560 #ifndef PRODUCT | |
561 if( TraceSafepoint ) { | |
562 char buf[256]; | |
563 jio_snprintf(buf, sizeof(buf), | |
564 "... found polling page %s exception at pc = " | |
565 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
566 at_poll_return ? "return" : "loop", | |
567 (intptr_t)pc, (intptr_t)stub); | |
568 tty->print_raw_cr(buf); | |
569 } | |
570 #endif // PRODUCT | |
571 return stub; | |
572 } | |
573 | |
574 | |
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575 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
0 | 576 assert(caller.is_interpreted_frame(), ""); |
577 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
578 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
579 oop result = (oop) *caller.interpreter_frame_tos_at(args_size - 1); | |
580 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); | |
581 return result; | |
582 } | |
583 | |
584 | |
585 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
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586 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 587 vframeStream vfst(thread, true); |
588 methodHandle method = methodHandle(thread, vfst.method()); | |
589 address bcp = method()->bcp_from(vfst.bci()); | |
590 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
591 } | |
592 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
593 } | |
594 | |
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595 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
0 | 596 Handle h_exception = Exceptions::new_exception(thread, name, message); |
597 throw_and_post_jvmti_exception(thread, h_exception); | |
598 } | |
599 | |
610
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600 // The interpreter code to call this tracing function is only |
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601 // called/generated when TraceRedefineClasses has the right bits |
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602 // set. Since obsolete methods are never compiled, we don't have |
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603 // to modify the compilers to generate calls to this function. |
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604 // |
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605 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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606 JavaThread* thread, Method* method)) |
610
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607 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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608 |
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609 if (method->is_obsolete()) { |
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610 // We are calling an obsolete method, but this is not necessarily |
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611 // an error. Our method could have been redefined just after we |
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612 // fetched the Method* from the constant pool. |
610
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613 |
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614 // RC_TRACE macro has an embedded ResourceMark |
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615 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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616 ("calling obsolete method '%s'", |
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617 method->name_and_sig_as_C_string())); |
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618 if (RC_TRACE_ENABLED(0x00002000)) { |
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619 // this option is provided to debug calls to obsolete methods |
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620 guarantee(false, "faulting at call to an obsolete method."); |
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621 } |
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622 } |
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623 return 0; |
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624 JRT_END |
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625 |
0 | 626 // ret_pc points into caller; we are returning caller's exception handler |
627 // for given exception | |
628 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
629 bool force_unwind, bool top_frame_only) { | |
630 assert(nm != NULL, "must exist"); | |
631 ResourceMark rm; | |
632 | |
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633 #ifdef GRAAL |
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634 if (nm->is_compiled_by_graal()) { |
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635 // lookup exception handler for this pc |
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636 int catch_pco = ret_pc - nm->code_begin(); |
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637 ExceptionHandlerTable table(nm); |
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638 HandlerTableEntry *t = table.entry_for(catch_pco, -1, 0); |
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639 if (t != NULL) { |
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640 return nm->code_begin() + t->pco(); |
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641 } else { |
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642 // there is no exception handler for this pc => deoptimize |
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643 nm->make_not_entrant(); |
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644 JavaThread* thread = JavaThread::current(); |
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645 RegisterMap reg_map(thread); |
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646 frame runtime_frame = thread->last_frame(); |
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647 frame caller_frame = runtime_frame.sender(®_map); |
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648 Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_not_compiled_exception_handler); |
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649 return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
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650 } |
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651 } |
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652 #endif |
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653 |
0 | 654 ScopeDesc* sd = nm->scope_desc_at(ret_pc); |
655 // determine handler bci, if any | |
656 EXCEPTION_MARK; | |
657 | |
658 int handler_bci = -1; | |
659 int scope_depth = 0; | |
660 if (!force_unwind) { | |
661 int bci = sd->bci(); | |
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662 bool recursive_exception = false; |
0 | 663 do { |
664 bool skip_scope_increment = false; | |
665 // exception handler lookup | |
666 KlassHandle ek (THREAD, exception->klass()); | |
7469
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667 methodHandle mh(THREAD, sd->method()); |
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668 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
0 | 669 if (HAS_PENDING_EXCEPTION) { |
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670 recursive_exception = true; |
0 | 671 // We threw an exception while trying to find the exception handler. |
672 // Transfer the new exception to the exception handle which will | |
673 // be set into thread local storage, and do another lookup for an | |
674 // exception handler for this exception, this time starting at the | |
675 // BCI of the exception handler which caused the exception to be | |
676 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
677 // argument to ensure that the correct exception is thrown (4870175). | |
678 exception = Handle(THREAD, PENDING_EXCEPTION); | |
679 CLEAR_PENDING_EXCEPTION; | |
680 if (handler_bci >= 0) { | |
681 bci = handler_bci; | |
682 handler_bci = -1; | |
683 skip_scope_increment = true; | |
684 } | |
685 } | |
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686 else { |
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687 recursive_exception = false; |
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688 } |
0 | 689 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
690 sd = sd->sender(); | |
691 if (sd != NULL) { | |
692 bci = sd->bci(); | |
693 } | |
694 ++scope_depth; | |
695 } | |
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696 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
0 | 697 } |
698 | |
699 // found handling method => lookup exception handler | |
1748 | 700 int catch_pco = ret_pc - nm->code_begin(); |
0 | 701 |
702 ExceptionHandlerTable table(nm); | |
703 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
704 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
705 // Allow abbreviated catch tables. The idea is to allow a method | |
706 // to materialize its exceptions without committing to the exact | |
707 // routing of exceptions. In particular this is needed for adding | |
708 // a synthethic handler to unlock monitors when inlining | |
709 // synchonized methods since the unlock path isn't represented in | |
710 // the bytecodes. | |
711 t = table.entry_for(catch_pco, -1, 0); | |
712 } | |
713 | |
1378
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714 #ifdef COMPILER1 |
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715 if (t == NULL && nm->is_compiled_by_c1()) { |
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716 assert(nm->unwind_handler_begin() != NULL, ""); |
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717 return nm->unwind_handler_begin(); |
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718 } |
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719 #endif |
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720 |
0 | 721 if (t == NULL) { |
722 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
723 tty->print_cr(" Exception:"); | |
724 exception->print(); | |
725 tty->cr(); | |
726 tty->print_cr(" Compiled exception table :"); | |
727 table.print(); | |
728 nm->print_code(); | |
729 guarantee(false, "missing exception handler"); | |
730 return NULL; | |
731 } | |
732 | |
1748 | 733 return nm->code_begin() + t->pco(); |
0 | 734 } |
735 | |
736 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
737 // These errors occur only at call sites | |
738 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
739 JRT_END | |
740 | |
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741 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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742 // These errors occur only at call sites |
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743 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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744 JRT_END |
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745 |
0 | 746 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
747 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
748 JRT_END | |
749 | |
750 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
751 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
752 JRT_END | |
753 | |
754 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
755 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
756 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
757 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
758 JRT_END | |
759 | |
760 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
761 // We avoid using the normal exception construction in this case because | |
762 // it performs an upcall to Java, and we're already out of stack space. | |
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763 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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764 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 765 Handle exception (thread, exception_oop); |
766 if (StackTraceInThrowable) { | |
767 java_lang_Throwable::fill_in_stack_trace(exception); | |
768 } | |
769 throw_and_post_jvmti_exception(thread, exception); | |
770 JRT_END | |
771 | |
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772 #ifdef GRAAL |
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773 address SharedRuntime::deoptimize_for_implicit_exception(JavaThread* thread, address pc, nmethod* nm, int deopt_reason) { |
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774 assert(deopt_reason > Deoptimization::Reason_none && deopt_reason < Deoptimization::Reason_LIMIT, "invalid deopt reason"); |
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775 if (TraceSignals) { |
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776 tty->print_cr(err_msg("Deoptimizing on implicit exception at relative pc=%d in method %s", pc - nm->entry_point(), nm->method()->name()->as_C_string())); |
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777 } |
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778 thread->_ScratchA = (intptr_t)pc; |
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779 thread->_ScratchB = Deoptimization::make_trap_request((Deoptimization::DeoptReason)deopt_reason, Deoptimization::Action_reinterpret); |
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780 return (SharedRuntime::deopt_blob()->implicit_exception_uncommon_trap()); |
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781 } |
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782 #endif |
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|
783 |
0 | 784 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, |
785 address pc, | |
786 SharedRuntime::ImplicitExceptionKind exception_kind) | |
787 { | |
788 address target_pc = NULL; | |
789 | |
790 if (Interpreter::contains(pc)) { | |
791 #ifdef CC_INTERP | |
792 // C++ interpreter doesn't throw implicit exceptions | |
793 ShouldNotReachHere(); | |
794 #else | |
795 switch (exception_kind) { | |
796 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
797 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
798 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
799 default: ShouldNotReachHere(); | |
800 } | |
801 #endif // !CC_INTERP | |
802 } else { | |
803 switch (exception_kind) { | |
804 case STACK_OVERFLOW: { | |
805 // Stack overflow only occurs upon frame setup; the callee is | |
806 // going to be unwound. Dispatch to a shared runtime stub | |
807 // which will cause the StackOverflowError to be fabricated | |
808 // and processed. | |
809 // For stack overflow in deoptimization blob, cleanup thread. | |
810 if (thread->deopt_mark() != NULL) { | |
811 Deoptimization::cleanup_deopt_info(thread, NULL); | |
812 } | |
4944 | 813 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
0 | 814 return StubRoutines::throw_StackOverflowError_entry(); |
815 } | |
816 | |
817 case IMPLICIT_NULL: { | |
818 if (VtableStubs::contains(pc)) { | |
819 // We haven't yet entered the callee frame. Fabricate an | |
820 // exception and begin dispatching it in the caller. Since | |
821 // the caller was at a call site, it's safe to destroy all | |
822 // caller-saved registers, as these entry points do. | |
823 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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824 |
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825 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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826 if (vt_stub == NULL) return NULL; |
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827 |
0 | 828 if (vt_stub->is_abstract_method_error(pc)) { |
829 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
4944 | 830 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
0 | 831 return StubRoutines::throw_AbstractMethodError_entry(); |
832 } else { | |
4944 | 833 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
0 | 834 return StubRoutines::throw_NullPointerException_at_call_entry(); |
835 } | |
836 } else { | |
837 CodeBlob* cb = CodeCache::find_blob(pc); | |
465
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838 |
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839 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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840 if (cb == NULL) return NULL; |
0 | 841 |
842 // Exception happened in CodeCache. Must be either: | |
843 // 1. Inline-cache check in C2I handler blob, | |
844 // 2. Inline-cache check in nmethod, or | |
845 // 3. Implict null exception in nmethod | |
846 | |
847 if (!cb->is_nmethod()) { | |
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848 guarantee(cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(), |
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849 "exception happened outside interpreter, nmethods and vtable stubs (1)"); |
4944 | 850 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
0 | 851 // There is no handler here, so we will simply unwind. |
852 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
853 } | |
854 | |
855 // Otherwise, it's an nmethod. Consult its exception handlers. | |
856 nmethod* nm = (nmethod*)cb; | |
857 if (nm->inlinecache_check_contains(pc)) { | |
858 // exception happened inside inline-cache check code | |
859 // => the nmethod is not yet active (i.e., the frame | |
860 // is not set up yet) => use return address pushed by | |
861 // caller => don't push another return address | |
4944 | 862 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
0 | 863 return StubRoutines::throw_NullPointerException_at_call_entry(); |
864 } | |
865 | |
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866 if (nm->method()->is_method_handle_intrinsic()) { |
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867 // exception happened inside MH dispatch code, similar to a vtable stub |
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868 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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869 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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870 } |
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871 |
0 | 872 #ifndef PRODUCT |
873 _implicit_null_throws++; | |
874 #endif | |
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875 #ifdef GRAAL |
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876 if (nm->is_compiled_by_graal()) { |
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877 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_null_check); |
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878 } else { |
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879 #endif |
0 | 880 target_pc = nm->continuation_for_implicit_exception(pc); |
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881 #ifdef GRAAL |
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882 } |
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883 #endif |
1250 | 884 // If there's an unexpected fault, target_pc might be NULL, |
885 // in which case we want to fall through into the normal | |
886 // error handling code. | |
0 | 887 } |
888 | |
889 break; // fall through | |
890 } | |
891 | |
892 | |
893 case IMPLICIT_DIVIDE_BY_ZERO: { | |
894 nmethod* nm = CodeCache::find_nmethod(pc); | |
895 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
896 #ifndef PRODUCT | |
897 _implicit_div0_throws++; | |
898 #endif | |
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899 #ifdef GRAAL |
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900 if (nm->is_compiled_by_graal()) { |
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901 if (TraceSignals) { |
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902 tty->print_cr("Graal implicit div0"); |
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903 } |
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904 target_pc = deoptimize_for_implicit_exception(thread, pc, nm, Deoptimization::Reason_div0_check); |
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905 } else { |
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906 #endif |
0 | 907 target_pc = nm->continuation_for_implicit_exception(pc); |
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908 #ifdef GRAAL |
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909 } |
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910 #endif |
1250 | 911 // If there's an unexpected fault, target_pc might be NULL, |
912 // in which case we want to fall through into the normal | |
913 // error handling code. | |
0 | 914 break; // fall through |
915 } | |
916 | |
917 default: ShouldNotReachHere(); | |
918 } | |
919 | |
920 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
921 | |
922 // for AbortVMOnException flag | |
923 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
924 if (exception_kind == IMPLICIT_NULL) { | |
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925 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 926 } else { |
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927 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 928 } |
929 return target_pc; | |
930 } | |
931 | |
932 ShouldNotReachHere(); | |
933 return NULL; | |
934 } | |
935 | |
936 | |
937 JNI_ENTRY(void, throw_unsatisfied_link_error(JNIEnv* env, ...)) | |
938 { | |
939 THROW(vmSymbols::java_lang_UnsatisfiedLinkError()); | |
940 } | |
941 JNI_END | |
942 | |
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943 JNI_ENTRY(void, throw_unsupported_operation_exception(JNIEnv* env, ...)) |
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944 { |
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945 THROW(vmSymbols::java_lang_UnsupportedOperationException()); |
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946 } |
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947 JNI_END |
0 | 948 |
949 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
950 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
951 } | |
952 | |
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953 address SharedRuntime::native_method_throw_unsupported_operation_exception_entry() { |
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954 return CAST_FROM_FN_PTR(address, &throw_unsupported_operation_exception); |
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955 } |
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956 |
0 | 957 |
958 #ifndef PRODUCT | |
959 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
960 const frame f = thread->last_frame(); | |
961 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
962 #ifndef PRODUCT | |
963 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
964 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
965 #endif // !PRODUCT | |
966 return preserve_this_value; | |
967 JRT_END | |
968 #endif // !PRODUCT | |
969 | |
970 | |
971 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
972 os::yield_all(attempts); | |
973 JRT_END | |
974 | |
975 | |
976 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
977 assert(obj->is_oop(), "must be a valid oop"); | |
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978 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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979 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 980 JRT_END |
981 | |
982 | |
983 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
984 if (thread != NULL) { | |
985 if (thread->is_Java_thread()) { | |
986 oop obj = ((JavaThread*)thread)->threadObj(); | |
987 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
988 } | |
989 } | |
990 return 0; | |
991 } | |
992 | |
993 /** | |
994 * This function ought to be a void function, but cannot be because | |
995 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
996 * 6254741. Once that is fixed we can remove the dummy return value. | |
997 */ | |
998 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
999 return dtrace_object_alloc_base(Thread::current(), o); | |
1000 } | |
1001 | |
1002 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
1003 assert(DTraceAllocProbes, "wrong call"); | |
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1004 Klass* klass = o->klass(); |
0 | 1005 int size = o->size(); |
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1006 Symbol* name = klass->name(); |
4006 | 1007 #ifndef USDT2 |
0 | 1008 HS_DTRACE_PROBE4(hotspot, object__alloc, get_java_tid(thread), |
1009 name->bytes(), name->utf8_length(), size * HeapWordSize); | |
4006 | 1010 #else /* USDT2 */ |
1011 HOTSPOT_OBJECT_ALLOC( | |
1012 get_java_tid(thread), | |
1013 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
1014 #endif /* USDT2 */ | |
0 | 1015 return 0; |
1016 } | |
1017 | |
1018 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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1019 JavaThread* thread, Method* method)) |
0 | 1020 assert(DTraceMethodProbes, "wrong call"); |
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1021 Symbol* kname = method->klass_name(); |
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1022 Symbol* name = method->name(); |
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1023 Symbol* sig = method->signature(); |
4006 | 1024 #ifndef USDT2 |
0 | 1025 HS_DTRACE_PROBE7(hotspot, method__entry, get_java_tid(thread), |
1026 kname->bytes(), kname->utf8_length(), | |
1027 name->bytes(), name->utf8_length(), | |
1028 sig->bytes(), sig->utf8_length()); | |
4006 | 1029 #else /* USDT2 */ |
1030 HOTSPOT_METHOD_ENTRY( | |
1031 get_java_tid(thread), | |
1032 (char *) kname->bytes(), kname->utf8_length(), | |
1033 (char *) name->bytes(), name->utf8_length(), | |
1034 (char *) sig->bytes(), sig->utf8_length()); | |
1035 #endif /* USDT2 */ | |
0 | 1036 return 0; |
1037 JRT_END | |
1038 | |
1039 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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1040 JavaThread* thread, Method* method)) |
0 | 1041 assert(DTraceMethodProbes, "wrong call"); |
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1042 Symbol* kname = method->klass_name(); |
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1043 Symbol* name = method->name(); |
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1044 Symbol* sig = method->signature(); |
4006 | 1045 #ifndef USDT2 |
0 | 1046 HS_DTRACE_PROBE7(hotspot, method__return, get_java_tid(thread), |
1047 kname->bytes(), kname->utf8_length(), | |
1048 name->bytes(), name->utf8_length(), | |
1049 sig->bytes(), sig->utf8_length()); | |
4006 | 1050 #else /* USDT2 */ |
1051 HOTSPOT_METHOD_RETURN( | |
1052 get_java_tid(thread), | |
1053 (char *) kname->bytes(), kname->utf8_length(), | |
1054 (char *) name->bytes(), name->utf8_length(), | |
1055 (char *) sig->bytes(), sig->utf8_length()); | |
1056 #endif /* USDT2 */ | |
0 | 1057 return 0; |
1058 JRT_END | |
1059 | |
1060 | |
1061 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
1062 // for a call current in progress, i.e., arguments has been pushed on stack | |
1063 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
1064 // vtable updates, etc. Caller frame must be compiled. | |
1065 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
1066 ResourceMark rm(THREAD); | |
1067 | |
1068 // last java frame on stack (which includes native call frames) | |
1069 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
1070 | |
1071 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
1072 } | |
1073 | |
1074 | |
1075 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
1076 // for a call current in progress, i.e., arguments has been pushed on stack | |
1077 // but callee has not been invoked yet. Caller frame must be compiled. | |
1078 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
1079 vframeStream& vfst, | |
1080 Bytecodes::Code& bc, | |
1081 CallInfo& callinfo, TRAPS) { | |
1082 Handle receiver; | |
1083 Handle nullHandle; //create a handy null handle for exception returns | |
1084 | |
1085 assert(!vfst.at_end(), "Java frame must exist"); | |
1086 | |
1087 // Find caller and bci from vframe | |
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1088 methodHandle caller(THREAD, vfst.method()); |
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1089 int bci = vfst.bci(); |
0 | 1090 |
1091 // Find bytecode | |
2142 | 1092 Bytecode_invoke bytecode(caller, bci); |
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1093 bc = bytecode.invoke_code(); |
2142 | 1094 int bytecode_index = bytecode.index(); |
0 | 1095 |
1096 // Find receiver for non-static call | |
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1097 if (bc != Bytecodes::_invokestatic && |
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1098 bc != Bytecodes::_invokedynamic) { |
0 | 1099 // This register map must be update since we need to find the receiver for |
1100 // compiled frames. The receiver might be in a register. | |
1101 RegisterMap reg_map2(thread); | |
1102 frame stubFrame = thread->last_frame(); | |
1103 // Caller-frame is a compiled frame | |
1104 frame callerFrame = stubFrame.sender(®_map2); | |
1105 | |
2142 | 1106 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
0 | 1107 if (callee.is_null()) { |
1108 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
1109 } | |
1110 // Retrieve from a compiled argument list | |
1111 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
1112 | |
1113 if (receiver.is_null()) { | |
1114 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
1115 } | |
1116 } | |
1117 | |
1118 // Resolve method. This is parameterized by bytecode. | |
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1119 constantPoolHandle constants(THREAD, caller->constants()); |
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1120 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
0 | 1121 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
1122 | |
1123 #ifdef ASSERT | |
1124 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1125 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic) { |
0 | 1126 assert(receiver.not_null(), "should have thrown exception"); |
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1127 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1128 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
0 | 1129 // klass is already loaded |
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1130 KlassHandle static_receiver_klass(THREAD, rk); |
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1131 // Method handle invokes might have been optimized to a direct call |
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1132 // so don't check for the receiver class. |
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1133 // FIXME this weakens the assert too much |
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1134 methodHandle callee = callinfo.selected_method(); |
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1135 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1136 callee->is_method_handle_intrinsic() || |
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1137 callee->is_compiled_lambda_form(), |
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1138 "actual receiver must be subclass of static receiver klass"); |
0 | 1139 if (receiver_klass->oop_is_instance()) { |
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1140 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
0 | 1141 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1142 receiver_klass()->print(); |
0 | 1143 } |
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1144 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
0 | 1145 } |
1146 } | |
1147 #endif | |
1148 | |
1149 return receiver; | |
1150 } | |
1151 | |
1152 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
1153 ResourceMark rm(THREAD); | |
1154 // We need first to check if any Java activations (compiled, interpreted) | |
1155 // exist on the stack since last JavaCall. If not, we need | |
1156 // to get the target method from the JavaCall wrapper. | |
1157 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
1158 methodHandle callee_method; | |
1159 if (vfst.at_end()) { | |
1160 // No Java frames were found on stack since we did the JavaCall. | |
1161 // Hence the stack can only contain an entry_frame. We need to | |
1162 // find the target method from the stub frame. | |
1163 RegisterMap reg_map(thread, false); | |
1164 frame fr = thread->last_frame(); | |
1165 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
1166 fr = fr.sender(®_map); | |
1167 assert(fr.is_entry_frame(), "must be"); | |
1168 // fr is now pointing to the entry frame. | |
1169 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
1170 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
1171 } else { | |
1172 Bytecodes::Code bc; | |
1173 CallInfo callinfo; | |
1174 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
1175 callee_method = callinfo.selected_method(); | |
1176 } | |
1177 assert(callee_method()->is_method(), "must be"); | |
1178 return callee_method; | |
1179 } | |
1180 | |
1181 // Resolves a call. | |
1182 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
1183 bool is_virtual, | |
1184 bool is_optimized, TRAPS) { | |
1185 methodHandle callee_method; | |
1186 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1187 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
1188 int retry_count = 0; | |
1189 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
1142 | 1190 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
0 | 1191 // If has a pending exception then there is no need to re-try to |
1192 // resolve this method. | |
1193 // If the method has been redefined, we need to try again. | |
1194 // Hack: we have no way to update the vtables of arrays, so don't | |
1195 // require that java.lang.Object has been updated. | |
1196 | |
1197 // It is very unlikely that method is redefined more than 100 times | |
1198 // in the middle of resolve. If it is looping here more than 100 times | |
1199 // means then there could be a bug here. | |
1200 guarantee((retry_count++ < 100), | |
1201 "Could not resolve to latest version of redefined method"); | |
1202 // method is redefined in the middle of resolve so re-try. | |
1203 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1204 } | |
1205 } | |
1206 return callee_method; | |
1207 } | |
1208 | |
1209 // Resolves a call. The compilers generate code for calls that go here | |
1210 // and are patched with the real destination of the call. | |
1211 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
1212 bool is_virtual, | |
1213 bool is_optimized, TRAPS) { | |
1214 | |
1215 ResourceMark rm(thread); | |
1216 RegisterMap cbl_map(thread, false); | |
1217 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
1218 | |
1295 | 1219 CodeBlob* caller_cb = caller_frame.cb(); |
1220 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
1221 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
0 | 1222 // make sure caller is not getting deoptimized |
1223 // and removed before we are done with it. | |
1224 // CLEANUP - with lazy deopt shouldn't need this lock | |
1295 | 1225 nmethodLocker caller_lock(caller_nm); |
0 | 1226 |
1227 | |
1228 // determine call info & receiver | |
1229 // note: a) receiver is NULL for static calls | |
1230 // b) an exception is thrown if receiver is NULL for non-static calls | |
1231 CallInfo call_info; | |
1232 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
1233 Handle receiver = find_callee_info(thread, invoke_code, | |
1234 call_info, CHECK_(methodHandle())); | |
1235 methodHandle callee_method = call_info.selected_method(); | |
1236 | |
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1237 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1238 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1239 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1240 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
0 | 1241 |
1242 #ifndef PRODUCT | |
1243 // tracing/debugging/statistics | |
1244 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
1245 (is_virtual) ? (&_resolve_virtual_ctr) : | |
1246 (&_resolve_static_ctr); | |
1247 Atomic::inc(addr); | |
1248 | |
1249 if (TraceCallFixup) { | |
1250 ResourceMark rm(thread); | |
1251 tty->print("resolving %s%s (%s) call to", | |
1252 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
1253 Bytecodes::name(invoke_code)); | |
1254 callee_method->print_short_name(tty); | |
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1255 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
0 | 1256 } |
1257 #endif | |
1258 | |
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1259 // JSR 292 key invariant: |
1295 | 1260 // If the resolved method is a MethodHandle invoke target the call |
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1261 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1262 // leaving the stack in a state unknown to either caller or callee |
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1263 // TODO detune for now but we might need it again |
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1264 // assert(!callee_method->is_compiled_lambda_form() || |
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1265 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
1295 | 1266 |
0 | 1267 // Compute entry points. This might require generation of C2I converter |
1268 // frames, so we cannot be holding any locks here. Furthermore, the | |
1269 // computation of the entry points is independent of patching the call. We | |
1270 // always return the entry-point, but we only patch the stub if the call has | |
1271 // not been deoptimized. Return values: For a virtual call this is an | |
1272 // (cached_oop, destination address) pair. For a static call/optimized | |
1273 // virtual this is just a destination address. | |
1274 | |
1275 StaticCallInfo static_call_info; | |
1276 CompiledICInfo virtual_call_info; | |
1277 | |
1278 // Make sure the callee nmethod does not get deoptimized and removed before | |
1279 // we are done patching the code. | |
1295 | 1280 nmethod* callee_nm = callee_method->code(); |
1281 nmethodLocker nl_callee(callee_nm); | |
0 | 1282 #ifdef ASSERT |
1295 | 1283 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
0 | 1284 #endif |
1285 | |
1286 if (is_virtual) { | |
1287 assert(receiver.not_null(), "sanity check"); | |
1288 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); | |
1289 KlassHandle h_klass(THREAD, receiver->klass()); | |
1290 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, | |
1291 is_optimized, static_bound, virtual_call_info, | |
1292 CHECK_(methodHandle())); | |
1293 } else { | |
1294 // static call | |
1295 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
1296 } | |
1297 | |
1298 // grab lock, check for deoptimization and potentially patch caller | |
1299 { | |
1300 MutexLocker ml_patch(CompiledIC_lock); | |
1301 | |
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1302 // Now that we are ready to patch if the Method* was redefined then |
0 | 1303 // don't update call site and let the caller retry. |
1304 | |
1305 if (!callee_method->is_old()) { | |
1306 #ifdef ASSERT | |
1307 // We must not try to patch to jump to an already unloaded method. | |
1308 if (dest_entry_point != 0) { | |
1309 assert(CodeCache::find_blob(dest_entry_point) != NULL, | |
1310 "should not unload nmethod while locked"); | |
1311 } | |
1312 #endif | |
1313 if (is_virtual) { | |
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1314 nmethod* nm = callee_nm; |
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1315 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1316 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
0 | 1317 if (inline_cache->is_clean()) { |
1318 inline_cache->set_to_monomorphic(virtual_call_info); | |
1319 } | |
1320 } else { | |
1321 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
1322 if (ssc->is_clean()) ssc->set(static_call_info); | |
1323 } | |
1324 } | |
1325 | |
1326 } // unlock CompiledIC_lock | |
1327 | |
1328 return callee_method; | |
1329 } | |
1330 | |
1331 | |
1332 // Inline caches exist only in compiled code | |
1333 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
1334 #ifdef ASSERT | |
1335 RegisterMap reg_map(thread, false); | |
1336 frame stub_frame = thread->last_frame(); | |
1337 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1338 frame caller_frame = stub_frame.sender(®_map); | |
1339 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
1340 #endif /* ASSERT */ | |
1341 | |
1342 methodHandle callee_method; | |
1343 JRT_BLOCK | |
1344 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1345 // Return Method* through TLS |
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1346 thread->set_vm_result_2(callee_method()); |
0 | 1347 JRT_BLOCK_END |
1348 // return compiled code entry point after potential safepoints | |
1349 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1350 return callee_method->verified_code_entry(); | |
1351 JRT_END | |
1352 | |
1353 | |
1354 // Handle call site that has been made non-entrant | |
1355 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
1356 // 6243940 We might end up in here if the callee is deoptimized | |
1357 // as we race to call it. We don't want to take a safepoint if | |
1358 // the caller was interpreted because the caller frame will look | |
1359 // interpreted to the stack walkers and arguments are now | |
1360 // "compiled" so it is much better to make this transition | |
1361 // invisible to the stack walking code. The i2c path will | |
1362 // place the callee method in the callee_target. It is stashed | |
1363 // there because if we try and find the callee by normal means a | |
1364 // safepoint is possible and have trouble gc'ing the compiled args. | |
1365 RegisterMap reg_map(thread, false); | |
1366 frame stub_frame = thread->last_frame(); | |
1367 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1368 frame caller_frame = stub_frame.sender(®_map); | |
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1369 |
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1370 // MethodHandle invokes don't have a CompiledIC and should always |
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1371 // simply redispatch to the callee_target. |
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1372 address sender_pc = caller_frame.pc(); |
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1373 CodeBlob* sender_cb = caller_frame.cb(); |
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1374 nmethod* sender_nm = sender_cb->as_nmethod_or_null(); |
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1375 |
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1376 if (caller_frame.is_interpreted_frame() || |
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1377 caller_frame.is_entry_frame()) { |
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1378 Method* callee = thread->callee_target(); |
0 | 1379 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1380 thread->set_vm_result_2(callee); |
0 | 1381 thread->set_callee_target(NULL); |
1382 return callee->get_c2i_entry(); | |
1383 } | |
1384 | |
1385 // Must be compiled to compiled path which is safe to stackwalk | |
1386 methodHandle callee_method; | |
1387 JRT_BLOCK | |
1388 // Force resolving of caller (if we called from compiled frame) | |
1389 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1390 thread->set_vm_result_2(callee_method()); |
0 | 1391 JRT_BLOCK_END |
1392 // return compiled code entry point after potential safepoints | |
1393 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1394 return callee_method->verified_code_entry(); | |
1395 JRT_END | |
1396 | |
1397 | |
1398 // resolve a static call and patch code | |
1399 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
1400 methodHandle callee_method; | |
1401 JRT_BLOCK | |
1402 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1403 thread->set_vm_result_2(callee_method()); |
0 | 1404 JRT_BLOCK_END |
1405 // return compiled code entry point after potential safepoints | |
1406 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1407 return callee_method->verified_code_entry(); | |
1408 JRT_END | |
1409 | |
1410 | |
1411 // resolve virtual call and update inline cache to monomorphic | |
1412 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
1413 methodHandle callee_method; | |
1414 JRT_BLOCK | |
1415 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1416 thread->set_vm_result_2(callee_method()); |
0 | 1417 JRT_BLOCK_END |
1418 // return compiled code entry point after potential safepoints | |
1419 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1420 return callee_method->verified_code_entry(); | |
1421 JRT_END | |
1422 | |
1423 | |
1424 // Resolve a virtual call that can be statically bound (e.g., always | |
1425 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
1426 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
1427 methodHandle callee_method; | |
1428 JRT_BLOCK | |
1429 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1430 thread->set_vm_result_2(callee_method()); |
0 | 1431 JRT_BLOCK_END |
1432 // return compiled code entry point after potential safepoints | |
1433 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1434 return callee_method->verified_code_entry(); | |
1435 JRT_END | |
1436 | |
1437 | |
1438 | |
1439 | |
1440 | |
1441 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
1442 ResourceMark rm(thread); | |
1443 CallInfo call_info; | |
1444 Bytecodes::Code bc; | |
1445 | |
1446 // receiver is NULL for static calls. An exception is thrown for NULL | |
1447 // receivers for non-static calls | |
1448 Handle receiver = find_callee_info(thread, bc, call_info, | |
1449 CHECK_(methodHandle())); | |
1450 // Compiler1 can produce virtual call sites that can actually be statically bound | |
1451 // If we fell thru to below we would think that the site was going megamorphic | |
1452 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
1453 // we'd try and do a vtable dispatch however methods that can be statically bound | |
1454 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
1455 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
1456 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
1457 // never to miss again. I don't believe C2 will produce code like this but if it | |
1458 // did this would still be the correct thing to do for it too, hence no ifdef. | |
1459 // | |
1460 if (call_info.resolved_method()->can_be_statically_bound()) { | |
1461 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
1462 if (TraceCallFixup) { | |
1463 RegisterMap reg_map(thread, false); | |
1464 frame caller_frame = thread->last_frame().sender(®_map); | |
1465 ResourceMark rm(thread); | |
1466 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
1467 callee_method->print_short_name(tty); | |
1468 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
1469 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1470 } | |
1471 return callee_method; | |
1472 } | |
1473 | |
1474 methodHandle callee_method = call_info.selected_method(); | |
1475 | |
1476 bool should_be_mono = false; | |
1477 | |
1478 #ifndef PRODUCT | |
1479 Atomic::inc(&_ic_miss_ctr); | |
1480 | |
1481 // Statistics & Tracing | |
1482 if (TraceCallFixup) { | |
1483 ResourceMark rm(thread); | |
1484 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
1485 callee_method->print_short_name(tty); | |
1486 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1487 } | |
1488 | |
1489 if (ICMissHistogram) { | |
1490 MutexLocker m(VMStatistic_lock); | |
1491 RegisterMap reg_map(thread, false); | |
1492 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
1493 // produce statistics under the lock | |
1494 trace_ic_miss(f.pc()); | |
1495 } | |
1496 #endif | |
1497 | |
1498 // install an event collector so that when a vtable stub is created the | |
1499 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
1500 // event can't be posted when the stub is created as locks are held | |
1501 // - instead the event will be deferred until the event collector goes | |
1502 // out of scope. | |
1503 JvmtiDynamicCodeEventCollector event_collector; | |
1504 | |
1505 // Update inline cache to megamorphic. Skip update if caller has been | |
1506 // made non-entrant or we are called from interpreted. | |
1507 { MutexLocker ml_patch (CompiledIC_lock); | |
1508 RegisterMap reg_map(thread, false); | |
1509 frame caller_frame = thread->last_frame().sender(®_map); | |
1510 CodeBlob* cb = caller_frame.cb(); | |
1511 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
1512 // Not a non-entrant nmethod, so find inline_cache | |
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1513 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
0 | 1514 bool should_be_mono = false; |
1515 if (inline_cache->is_optimized()) { | |
1516 if (TraceCallFixup) { | |
1517 ResourceMark rm(thread); | |
1518 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
1519 callee_method->print_short_name(tty); | |
1520 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1521 } | |
1522 should_be_mono = true; | |
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1523 } else if (inline_cache->is_icholder_call()) { |
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1524 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1525 if ( ic_oop != NULL) { |
0 | 1526 |
1527 if (receiver()->klass() == ic_oop->holder_klass()) { | |
1528 // This isn't a real miss. We must have seen that compiled code | |
1529 // is now available and we want the call site converted to a | |
1530 // monomorphic compiled call site. | |
1531 // We can't assert for callee_method->code() != NULL because it | |
1532 // could have been deoptimized in the meantime | |
1533 if (TraceCallFixup) { | |
1534 ResourceMark rm(thread); | |
1535 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
1536 callee_method->print_short_name(tty); | |
1537 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1538 } | |
1539 should_be_mono = true; | |
1540 } | |
1541 } | |
1542 } | |
1543 | |
1544 if (should_be_mono) { | |
1545 | |
1546 // We have a path that was monomorphic but was going interpreted | |
1547 // and now we have (or had) a compiled entry. We correct the IC | |
1548 // by using a new icBuffer. | |
1549 CompiledICInfo info; | |
1550 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
1551 inline_cache->compute_monomorphic_entry(callee_method, | |
1552 receiver_klass, | |
1553 inline_cache->is_optimized(), | |
1554 false, | |
1555 info, CHECK_(methodHandle())); | |
1556 inline_cache->set_to_monomorphic(info); | |
1557 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
1558 // Change to megamorphic | |
1559 inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
1560 } else { | |
1561 // Either clean or megamorphic | |
1562 } | |
1563 } | |
1564 } // Release CompiledIC_lock | |
1565 | |
1566 return callee_method; | |
1567 } | |
1568 | |
1569 // | |
1570 // Resets a call-site in compiled code so it will get resolved again. | |
1571 // This routines handles both virtual call sites, optimized virtual call | |
1572 // sites, and static call sites. Typically used to change a call sites | |
1573 // destination from compiled to interpreted. | |
1574 // | |
1575 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
1576 ResourceMark rm(thread); | |
1577 RegisterMap reg_map(thread, false); | |
1578 frame stub_frame = thread->last_frame(); | |
1579 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
1580 frame caller = stub_frame.sender(®_map); | |
1581 | |
1582 // Do nothing if the frame isn't a live compiled frame. | |
1583 // nmethod could be deoptimized by the time we get here | |
1584 // so no update to the caller is needed. | |
1585 | |
1586 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
1587 | |
1588 address pc = caller.pc(); | |
1589 | |
1590 // Default call_addr is the location of the "basic" call. | |
1591 // Determine the address of the call we a reresolving. With | |
1592 // Inline Caches we will always find a recognizable call. | |
1593 // With Inline Caches disabled we may or may not find a | |
1594 // recognizable call. We will always find a call for static | |
1595 // calls and for optimized virtual calls. For vanilla virtual | |
1596 // calls it depends on the state of the UseInlineCaches switch. | |
1597 // | |
1598 // With Inline Caches disabled we can get here for a virtual call | |
1599 // for two reasons: | |
1600 // 1 - calling an abstract method. The vtable for abstract methods | |
1601 // will run us thru handle_wrong_method and we will eventually | |
1602 // end up in the interpreter to throw the ame. | |
1603 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
1604 // call and between the time we fetch the entry address and | |
1605 // we jump to it the target gets deoptimized. Similar to 1 | |
1606 // we will wind up in the interprter (thru a c2i with c2). | |
1607 // | |
1608 address call_addr = NULL; | |
1609 { | |
1610 // Get call instruction under lock because another thread may be | |
1611 // busy patching it. | |
1612 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1613 // Location of call instruction | |
1614 if (NativeCall::is_call_before(pc)) { | |
1615 NativeCall *ncall = nativeCall_before(pc); | |
1616 call_addr = ncall->instruction_address(); | |
1617 } | |
1618 } | |
1619 | |
1620 // Check for static or virtual call | |
1621 bool is_static_call = false; | |
1622 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
1623 // Make sure nmethod doesn't get deoptimized and removed until | |
1624 // this is done with it. | |
1625 // CLEANUP - with lazy deopt shouldn't need this lock | |
1626 nmethodLocker nmlock(caller_nm); | |
1627 | |
1628 if (call_addr != NULL) { | |
1629 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
1630 int ret = iter.next(); // Get item | |
1631 if (ret) { | |
1632 assert(iter.addr() == call_addr, "must find call"); | |
1633 if (iter.type() == relocInfo::static_call_type) { | |
1634 is_static_call = true; | |
1635 } else { | |
1636 assert(iter.type() == relocInfo::virtual_call_type || | |
1637 iter.type() == relocInfo::opt_virtual_call_type | |
1638 , "unexpected relocInfo. type"); | |
1639 } | |
1640 } else { | |
1641 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
1642 } | |
1643 | |
1644 // Cleaning the inline cache will force a new resolve. This is more robust | |
1645 // than directly setting it to the new destination, since resolving of calls | |
1646 // is always done through the same code path. (experience shows that it | |
1647 // leads to very hard to track down bugs, if an inline cache gets updated | |
1648 // to a wrong method). It should not be performance critical, since the | |
1649 // resolve is only done once. | |
1650 | |
1651 MutexLocker ml(CompiledIC_lock); | |
1652 // | |
1653 // We do not patch the call site if the nmethod has been made non-entrant | |
1654 // as it is a waste of time | |
1655 // | |
1656 if (caller_nm->is_in_use()) { | |
1657 if (is_static_call) { | |
1658 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
1659 ssc->set_to_clean(); | |
1660 } else { | |
1661 // compiled, dispatched call (which used to call an interpreted method) | |
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1662 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
0 | 1663 inline_cache->set_to_clean(); |
1664 } | |
1665 } | |
1666 } | |
1667 | |
1668 } | |
1669 | |
1670 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
1671 | |
1672 | |
1673 #ifndef PRODUCT | |
1674 Atomic::inc(&_wrong_method_ctr); | |
1675 | |
1676 if (TraceCallFixup) { | |
1677 ResourceMark rm(thread); | |
1678 tty->print("handle_wrong_method reresolving call to"); | |
1679 callee_method->print_short_name(tty); | |
1680 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1681 } | |
1682 #endif | |
1683 | |
1684 return callee_method; | |
1685 } | |
1686 | |
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1687 #ifdef ASSERT |
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1688 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1689 const BasicType* sig_bt, |
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1690 const VMRegPair* regs) { |
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1691 ResourceMark rm; |
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1692 const int total_args_passed = method->size_of_parameters(); |
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1693 const VMRegPair* regs_with_member_name = regs; |
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1694 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1695 |
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1696 const int member_arg_pos = total_args_passed - 1; |
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1697 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1698 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1699 |
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1700 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1701 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1702 |
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1703 for (int i = 0; i < member_arg_pos; i++) { |
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1704 VMReg a = regs_with_member_name[i].first(); |
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1705 VMReg b = regs_without_member_name[i].first(); |
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1706 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1707 } |
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1708 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1709 } |
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1710 #endif |
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1711 |
0 | 1712 // --------------------------------------------------------------------------- |
1713 // We are calling the interpreter via a c2i. Normally this would mean that | |
1714 // we were called by a compiled method. However we could have lost a race | |
1715 // where we went int -> i2c -> c2i and so the caller could in fact be | |
1205 | 1716 // interpreted. If the caller is compiled we attempt to patch the caller |
0 | 1717 // so he no longer calls into the interpreter. |
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1718 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1719 Method* moop(method); |
0 | 1720 |
1721 address entry_point = moop->from_compiled_entry(); | |
1722 | |
1723 // It's possible that deoptimization can occur at a call site which hasn't | |
1724 // been resolved yet, in which case this function will be called from | |
1725 // an nmethod that has been patched for deopt and we can ignore the | |
1726 // request for a fixup. | |
1727 // Also it is possible that we lost a race in that from_compiled_entry | |
1728 // is now back to the i2c in that case we don't need to patch and if | |
1729 // we did we'd leap into space because the callsite needs to use | |
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1730 // "to interpreter" stub in order to load up the Method*. Don't |
0 | 1731 // ask me how I know this... |
1732 | |
1733 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
1205 | 1734 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
1735 return; | |
1736 } | |
1737 | |
1738 // The check above makes sure this is a nmethod. | |
1739 nmethod* nm = cb->as_nmethod_or_null(); | |
1740 assert(nm, "must be"); | |
1741 | |
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1742 // Get the return PC for the passed caller PC. |
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1743 address return_pc = caller_pc + frame::pc_return_offset; |
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1744 |
0 | 1745 // There is a benign race here. We could be attempting to patch to a compiled |
1746 // entry point at the same time the callee is being deoptimized. If that is | |
1747 // the case then entry_point may in fact point to a c2i and we'd patch the | |
1748 // call site with the same old data. clear_code will set code() to NULL | |
1749 // at the end of it. If we happen to see that NULL then we can skip trying | |
1750 // to patch. If we hit the window where the callee has a c2i in the | |
1751 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
1752 // and patch the code with the same old data. Asi es la vida. | |
1753 | |
1754 if (moop->code() == NULL) return; | |
1755 | |
1205 | 1756 if (nm->is_in_use()) { |
0 | 1757 |
1758 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
1759 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1760 if (NativeCall::is_call_before(return_pc)) { |
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1761 NativeCall *call = nativeCall_before(return_pc); |
0 | 1762 // |
1763 // bug 6281185. We might get here after resolving a call site to a vanilla | |
1764 // virtual call. Because the resolvee uses the verified entry it may then | |
1765 // see compiled code and attempt to patch the site by calling us. This would | |
1766 // then incorrectly convert the call site to optimized and its downhill from | |
1767 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
1768 // just made a call site that could be megamorphic into a monomorphic site | |
1769 // for the rest of its life! Just another racing bug in the life of | |
1770 // fixup_callers_callsite ... | |
1771 // | |
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1772 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
0 | 1773 iter.next(); |
1774 assert(iter.has_current(), "must have a reloc at java call site"); | |
1775 relocInfo::relocType typ = iter.reloc()->type(); | |
1776 if ( typ != relocInfo::static_call_type && | |
1777 typ != relocInfo::opt_virtual_call_type && | |
1778 typ != relocInfo::static_stub_type) { | |
1779 return; | |
1780 } | |
1781 address destination = call->destination(); | |
1782 if (destination != entry_point) { | |
1783 CodeBlob* callee = CodeCache::find_blob(destination); | |
1784 // callee == cb seems weird. It means calling interpreter thru stub. | |
1785 if (callee == cb || callee->is_adapter_blob()) { | |
1786 // static call or optimized virtual | |
1787 if (TraceCallFixup) { | |
1204 | 1788 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1789 moop->print_short_name(tty); |
1790 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1791 } | |
1792 call->set_destination_mt_safe(entry_point); | |
1793 } else { | |
1794 if (TraceCallFixup) { | |
1795 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
1796 moop->print_short_name(tty); | |
1797 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1798 } | |
1799 // assert is too strong could also be resolve destinations. | |
1800 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
1801 } | |
1802 } else { | |
1803 if (TraceCallFixup) { | |
1204 | 1804 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1805 moop->print_short_name(tty); |
1806 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1807 } | |
1808 } | |
1809 } | |
1810 } | |
1811 IRT_END | |
1812 | |
1813 | |
1814 // same as JVM_Arraycopy, but called directly from compiled code | |
1815 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
1816 oopDesc* dest, jint dest_pos, | |
1817 jint length, | |
1818 JavaThread* thread)) { | |
1819 #ifndef PRODUCT | |
1820 _slow_array_copy_ctr++; | |
1821 #endif | |
1822 // Check if we have null pointers | |
1823 if (src == NULL || dest == NULL) { | |
1824 THROW(vmSymbols::java_lang_NullPointerException()); | |
1825 } | |
1826 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
1827 // even though the copy_array API also performs dynamic checks to ensure | |
1828 // that src and dest are truly arrays (and are conformable). | |
1829 // The copy_array mechanism is awkward and could be removed, but | |
1830 // the compilers don't call this function except as a last resort, | |
1831 // so it probably doesn't matter. | |
6983 | 1832 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
0 | 1833 (arrayOopDesc*)dest, dest_pos, |
1834 length, thread); | |
1835 } | |
1836 JRT_END | |
1837 | |
1838 char* SharedRuntime::generate_class_cast_message( | |
1839 JavaThread* thread, const char* objName) { | |
1840 | |
1841 // Get target class name from the checkcast instruction | |
1842 vframeStream vfst(thread, true); | |
1843 assert(!vfst.at_end(), "Java frame must exist"); | |
2142 | 1844 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
6983 | 1845 Klass* targetKlass = vfst.method()->constants()->klass_at( |
1846 cc.index(), thread); | |
0 | 1847 return generate_class_cast_message(objName, targetKlass->external_name()); |
1848 } | |
1849 | |
1850 char* SharedRuntime::generate_class_cast_message( | |
710 | 1851 const char* objName, const char* targetKlassName, const char* desc) { |
0 | 1852 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
1853 | |
53 | 1854 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 1855 if (NULL == message) { |
53 | 1856 // Shouldn't happen, but don't cause even more problems if it does |
0 | 1857 message = const_cast<char*>(objName); |
1858 } else { | |
1859 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
1860 } | |
1861 return message; | |
1862 } | |
1863 | |
1864 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
1865 (void) JavaThread::current()->reguard_stack(); | |
1866 JRT_END | |
1867 | |
1868 | |
1869 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
1870 #ifndef PRODUCT | |
1871 int SharedRuntime::_monitor_enter_ctr=0; | |
1872 #endif | |
1873 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
1874 oop obj(_obj); | |
1875 #ifndef PRODUCT | |
1876 _monitor_enter_ctr++; // monitor enter slow | |
1877 #endif | |
1878 if (PrintBiasedLockingStatistics) { | |
1879 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
1880 } | |
1881 Handle h_obj(THREAD, obj); | |
1882 if (UseBiasedLocking) { | |
1883 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
1884 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
1885 } else { | |
1886 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
1887 } | |
1888 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
1889 JRT_END | |
1890 | |
1891 #ifndef PRODUCT | |
1892 int SharedRuntime::_monitor_exit_ctr=0; | |
1893 #endif | |
1894 // Handles the uncommon cases of monitor unlocking in compiled code | |
1895 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
1896 oop obj(_obj); | |
1897 #ifndef PRODUCT | |
1898 _monitor_exit_ctr++; // monitor exit slow | |
1899 #endif | |
1900 Thread* THREAD = JavaThread::current(); | |
1901 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
1902 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
1903 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
1904 #undef MIGHT_HAVE_PENDING | |
1905 #ifdef MIGHT_HAVE_PENDING | |
1906 // Save and restore any pending_exception around the exception mark. | |
1907 // While the slow_exit must not throw an exception, we could come into | |
1908 // this routine with one set. | |
1909 oop pending_excep = NULL; | |
1910 const char* pending_file; | |
1911 int pending_line; | |
1912 if (HAS_PENDING_EXCEPTION) { | |
1913 pending_excep = PENDING_EXCEPTION; | |
1914 pending_file = THREAD->exception_file(); | |
1915 pending_line = THREAD->exception_line(); | |
1916 CLEAR_PENDING_EXCEPTION; | |
1917 } | |
1918 #endif /* MIGHT_HAVE_PENDING */ | |
1919 | |
1920 { | |
1921 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
1922 EXCEPTION_MARK; | |
1923 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
1924 } | |
1925 | |
1926 #ifdef MIGHT_HAVE_PENDING | |
1927 if (pending_excep != NULL) { | |
1928 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
1929 } | |
1930 #endif /* MIGHT_HAVE_PENDING */ | |
1931 JRT_END | |
1932 | |
1933 #ifndef PRODUCT | |
1934 | |
1935 void SharedRuntime::print_statistics() { | |
1936 ttyLocker ttyl; | |
1937 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
1938 | |
1939 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
1940 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
1941 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
1942 | |
1943 SharedRuntime::print_ic_miss_histogram(); | |
1944 | |
1945 if (CountRemovableExceptions) { | |
1946 if (_nof_removable_exceptions > 0) { | |
1947 Unimplemented(); // this counter is not yet incremented | |
1948 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
1949 } | |
1950 } | |
1951 | |
1952 // Dump the JRT_ENTRY counters | |
1953 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
1954 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
1955 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
1956 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
1957 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
1958 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
1959 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
1960 | |
1961 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
1962 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
1963 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
1964 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
1965 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
1966 | |
1967 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
1968 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
1969 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
1970 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
1971 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
1972 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
1973 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
1974 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
1975 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
1976 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
1977 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
1978 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
1979 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
1980 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
1981 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
1982 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
1983 | |
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1984 AdapterHandlerLibrary::print_statistics(); |
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1985 |
0 | 1986 if (xtty != NULL) xtty->tail("statistics"); |
1987 } | |
1988 | |
1989 inline double percent(int x, int y) { | |
1990 return 100.0 * x / MAX2(y, 1); | |
1991 } | |
1992 | |
1993 class MethodArityHistogram { | |
1994 public: | |
1995 enum { MAX_ARITY = 256 }; | |
1996 private: | |
1997 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
1998 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
1999 static int _max_arity; // max. arity seen | |
2000 static int _max_size; // max. arg size seen | |
2001 | |
2002 static void add_method_to_histogram(nmethod* nm) { | |
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2003 Method* m = nm->method(); |
0 | 2004 ArgumentCount args(m->signature()); |
2005 int arity = args.size() + (m->is_static() ? 0 : 1); | |
2006 int argsize = m->size_of_parameters(); | |
2007 arity = MIN2(arity, MAX_ARITY-1); | |
2008 argsize = MIN2(argsize, MAX_ARITY-1); | |
2009 int count = nm->method()->compiled_invocation_count(); | |
2010 _arity_histogram[arity] += count; | |
2011 _size_histogram[argsize] += count; | |
2012 _max_arity = MAX2(_max_arity, arity); | |
2013 _max_size = MAX2(_max_size, argsize); | |
2014 } | |
2015 | |
2016 void print_histogram_helper(int n, int* histo, const char* name) { | |
2017 const int N = MIN2(5, n); | |
2018 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2019 double sum = 0; | |
2020 double weighted_sum = 0; | |
2021 int i; | |
2022 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
2023 double rest = sum; | |
2024 double percent = sum / 100; | |
2025 for (i = 0; i <= N; i++) { | |
2026 rest -= histo[i]; | |
2027 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
2028 } | |
2029 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
2030 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
2031 } | |
2032 | |
2033 void print_histogram() { | |
2034 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
2035 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
2036 tty->print_cr("\nSame for parameter size (in words):"); | |
2037 print_histogram_helper(_max_size, _size_histogram, "size"); | |
2038 tty->cr(); | |
2039 } | |
2040 | |
2041 public: | |
2042 MethodArityHistogram() { | |
2043 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
2044 _max_arity = _max_size = 0; | |
2045 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
2046 CodeCache::nmethods_do(add_method_to_histogram); | |
2047 print_histogram(); | |
2048 } | |
2049 }; | |
2050 | |
2051 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
2052 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
2053 int MethodArityHistogram::_max_arity; | |
2054 int MethodArityHistogram::_max_size; | |
2055 | |
2056 void SharedRuntime::print_call_statistics(int comp_total) { | |
2057 tty->print_cr("Calls from compiled code:"); | |
2058 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
2059 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
2060 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
2061 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
2062 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
2063 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
2064 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
2065 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
2066 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
2067 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
2068 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
2069 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
2070 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
2071 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
2072 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
2073 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
2074 tty->cr(); | |
2075 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
2076 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
2077 tty->print_cr(" %% in nested categories are relative to their category"); | |
2078 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
2079 tty->cr(); | |
2080 | |
2081 MethodArityHistogram h; | |
2082 } | |
2083 #endif | |
2084 | |
2085 | |
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2086 // A simple wrapper class around the calling convention information |
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2087 // that allows sharing of adapters for the same calling convention. |
6197 | 2088 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2089 private: |
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2090 enum { |
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2091 _basic_type_bits = 4, |
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2092 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2093 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2094 _compact_int_count = 3 |
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2095 }; |
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2096 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2097 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2098 |
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2099 union { |
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2100 int _compact[_compact_int_count]; |
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2101 int* _fingerprint; |
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2102 } _value; |
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2103 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2104 // Otherwise _value._fingerprint is the array. |
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2105 |
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2106 // Remap BasicTypes that are handled equivalently by the adapters. |
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2107 // These are correct for the current system but someday it might be |
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2108 // necessary to make this mapping platform dependent. |
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2109 static int adapter_encoding(BasicType in) { |
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2110 switch(in) { |
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2111 case T_BOOLEAN: |
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2112 case T_BYTE: |
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2113 case T_SHORT: |
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2114 case T_CHAR: |
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2115 // There are all promoted to T_INT in the calling convention |
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2116 return T_INT; |
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2117 |
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2118 case T_OBJECT: |
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2119 case T_ARRAY: |
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2120 // In other words, we assume that any register good enough for |
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2121 // an int or long is good enough for a managed pointer. |
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2122 #ifdef _LP64 |
1506 | 2123 return T_LONG; |
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2124 #else |
1506 | 2125 return T_INT; |
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2126 #endif |
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2127 |
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2128 case T_INT: |
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2129 case T_LONG: |
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2130 case T_FLOAT: |
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2131 case T_DOUBLE: |
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2132 case T_VOID: |
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2133 return in; |
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2134 |
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2135 default: |
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2136 ShouldNotReachHere(); |
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2137 return T_CONFLICT; |
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2138 } |
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2139 } |
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2140 |
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2141 public: |
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2142 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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2143 // The fingerprint is based on the BasicType signature encoded |
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2144 // into an array of ints with eight entries per int. |
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2145 int* ptr; |
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2146 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2147 if (len <= _compact_int_count) { |
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2148 assert(_compact_int_count == 3, "else change next line"); |
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2149 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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2150 // Storing the signature encoded as signed chars hits about 98% |
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2151 // of the time. |
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2152 _length = -len; |
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2153 ptr = _value._compact; |
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2154 } else { |
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2155 _length = len; |
6197 | 2156 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
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2157 ptr = _value._fingerprint; |
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2158 } |
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2159 |
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2160 // Now pack the BasicTypes with 8 per int |
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2161 int sig_index = 0; |
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2162 for (int index = 0; index < len; index++) { |
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2163 int value = 0; |
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2164 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
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|
2165 int bt = ((sig_index < total_args_passed) |
1d7922586cf6
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|
2166 ? adapter_encoding(sig_bt[sig_index++]) |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2167 : 0); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
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|
2168 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
1d7922586cf6
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6197
diff
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|
2169 value = (value << _basic_type_bits) | bt; |
1207
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|
2170 } |
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diff
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|
2171 ptr[index] = value; |
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|
2172 } |
1187
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diff
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|
2173 } |
cf0685d550f1
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diff
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|
2174 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2175 ~AdapterFingerPrint() { |
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|
2176 if (_length > 0) { |
6197 | 2177 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2178 } |
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diff
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|
2179 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2180 |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2181 int value(int index) { |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2182 if (_length < 0) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2183 return _value._compact[index]; |
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diff
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|
2184 } |
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diff
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|
2185 return _value._fingerprint[index]; |
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|
2186 } |
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diff
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|
2187 int length() { |
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diff
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|
2188 if (_length < 0) return -_length; |
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diff
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|
2189 return _length; |
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|
2190 } |
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diff
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|
2191 |
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|
2192 bool is_compact() { |
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|
2193 return _length <= 0; |
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|
2194 } |
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|
2195 |
cf0685d550f1
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|
2196 unsigned int compute_hash() { |
1207
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diff
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|
2197 int hash = 0; |
1187
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|
2198 for (int i = 0; i < length(); i++) { |
1207
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|
2199 int v = value(i); |
1187
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|
2200 hash = (hash << 8) ^ v ^ (hash >> 5); |
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|
2201 } |
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diff
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|
2202 return (unsigned int)hash; |
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changeset
|
2203 } |
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diff
changeset
|
2204 |
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diff
changeset
|
2205 const char* as_string() { |
cf0685d550f1
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diff
changeset
|
2206 stringStream st; |
3841
0f34fdee809e
7071427: AdapterFingerPrint can hold 8 entries per int
never
parents:
3451
diff
changeset
|
2207 st.print("0x"); |
1187
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changeset
|
2208 for (int i = 0; i < length(); i++) { |
3841
0f34fdee809e
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diff
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|
2209 st.print("%08x", value(i)); |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2210 } |
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diff
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|
2211 return st.as_string(); |
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diff
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|
2212 } |
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diff
changeset
|
2213 |
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diff
changeset
|
2214 bool equals(AdapterFingerPrint* other) { |
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diff
changeset
|
2215 if (other->_length != _length) { |
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diff
changeset
|
2216 return false; |
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diff
changeset
|
2217 } |
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diff
changeset
|
2218 if (_length < 0) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2219 assert(_compact_int_count == 3, "else change next line"); |
1207
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|
2220 return _value._compact[0] == other->_value._compact[0] && |
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|
2221 _value._compact[1] == other->_value._compact[1] && |
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|
2222 _value._compact[2] == other->_value._compact[2]; |
1187
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diff
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|
2223 } else { |
cf0685d550f1
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diff
changeset
|
2224 for (int i = 0; i < _length; i++) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2225 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2226 return false; |
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diff
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|
2227 } |
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diff
changeset
|
2228 } |
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diff
changeset
|
2229 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2230 return true; |
cf0685d550f1
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diff
changeset
|
2231 } |
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diff
changeset
|
2232 }; |
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2233 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2234 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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changeset
|
2235 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
6197 | 2236 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2237 friend class AdapterHandlerTableIterator; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2238 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2239 private: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2240 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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1257
diff
changeset
|
2241 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
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|
2242 static int _lookups; // number of calls to lookup |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
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|
2243 static int _buckets; // number of buckets checked |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2244 static int _equals; // number of buckets checked with matching hash |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
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|
2245 static int _hits; // number of successful lookups |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2246 static int _compact; // number of equals calls with compact signature |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2247 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2248 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
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|
2249 AdapterHandlerEntry* bucket(int i) { |
6197 | 2250 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
1187
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diff
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|
2251 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2252 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2253 public: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2254 AdapterHandlerTable() |
6197 | 2255 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2256 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2257 // 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
|
2258 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
6197 | 2259 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
|
2260 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2261 return entry; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2262 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2263 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
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diff
changeset
|
2264 // Insert an entry into the table |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2265 void add(AdapterHandlerEntry* entry) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2266 int index = hash_to_index(entry->hash()); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2267 add_entry(index, entry); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2268 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2269 |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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|
2270 void free_entry(AdapterHandlerEntry* entry) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2271 entry->deallocate(); |
6197 | 2272 BasicHashtable<mtCode>::free_entry(entry); |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2273 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2274 |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2275 // Find a entry with the same fingerprint if it exists |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2276 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2277 NOT_PRODUCT(_lookups++); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2278 AdapterFingerPrint fp(total_args_passed, sig_bt); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2279 unsigned int hash = fp.compute_hash(); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2280 int index = hash_to_index(hash); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2281 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2282 NOT_PRODUCT(_buckets++); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2283 if (e->hash() == hash) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2284 NOT_PRODUCT(_equals++); |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2285 if (fp.equals(e->fingerprint())) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2286 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2287 if (fp.is_compact()) _compact++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2288 _hits++; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2289 #endif |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2290 return e; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2291 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2292 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2293 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2294 return NULL; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2295 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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1142
diff
changeset
|
2296 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
parents:
1257
diff
changeset
|
2297 #ifndef PRODUCT |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2298 void print_statistics() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2299 ResourceMark rm; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2300 int longest = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2301 int empty = 0; |
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2302 int total = 0; |
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2303 int nonempty = 0; |
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2304 for (int index = 0; index < table_size(); index++) { |
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2305 int count = 0; |
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2306 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
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2307 count++; |
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2308 } |
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|
2309 if (count != 0) nonempty++; |
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2310 if (count == 0) empty++; |
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2311 if (count > longest) longest = count; |
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2312 total += count; |
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|
2313 } |
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2314 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
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2315 empty, longest, total, total / (double)nonempty); |
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2316 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
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2317 _lookups, _buckets, _equals, _hits, _compact); |
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2318 } |
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2319 #endif |
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2320 }; |
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2321 |
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2322 |
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2323 #ifndef PRODUCT |
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2324 |
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2325 int AdapterHandlerTable::_lookups; |
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2326 int AdapterHandlerTable::_buckets; |
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2327 int AdapterHandlerTable::_equals; |
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2328 int AdapterHandlerTable::_hits; |
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2329 int AdapterHandlerTable::_compact; |
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2330 |
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2331 #endif |
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2332 |
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2333 class AdapterHandlerTableIterator : public StackObj { |
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2334 private: |
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2335 AdapterHandlerTable* _table; |
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2336 int _index; |
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2337 AdapterHandlerEntry* _current; |
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2338 |
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2339 void scan() { |
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2340 while (_index < _table->table_size()) { |
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2341 AdapterHandlerEntry* a = _table->bucket(_index); |
1564 | 2342 _index++; |
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2343 if (a != NULL) { |
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2344 _current = a; |
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2345 return; |
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2346 } |
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2347 } |
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2348 } |
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2349 |
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2350 public: |
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2351 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
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2352 scan(); |
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2353 } |
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2354 bool has_next() { |
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2355 return _current != NULL; |
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|
2356 } |
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2357 AdapterHandlerEntry* next() { |
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2358 if (_current != NULL) { |
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2359 AdapterHandlerEntry* result = _current; |
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2360 _current = _current->next(); |
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2361 if (_current == NULL) scan(); |
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2362 return result; |
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2363 } else { |
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2364 return NULL; |
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|
2365 } |
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2366 } |
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2367 }; |
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2368 |
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2369 |
0 | 2370 // --------------------------------------------------------------------------- |
2371 // Implementation of AdapterHandlerLibrary | |
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2372 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
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2373 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
0 | 2374 const int AdapterHandlerLibrary_size = 16*K; |
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2375 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
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2376 |
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2377 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
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2378 // Should be called only when AdapterHandlerLibrary_lock is active. |
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2379 if (_buffer == NULL) // Initialize lazily |
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2380 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2381 return _buffer; |
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|
2382 } |
0 | 2383 |
2384 void AdapterHandlerLibrary::initialize() { | |
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2385 if (_adapters != NULL) return; |
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|
2386 _adapters = new AdapterHandlerTable(); |
0 | 2387 |
2388 // Create a special handler for abstract methods. Abstract methods | |
2389 // are never compiled so an i2c entry is somewhat meaningless, but | |
2390 // fill it in with something appropriate just in case. Pass handle | |
2391 // wrong method for the c2i transitions. | |
2392 address wrong_method = SharedRuntime::get_handle_wrong_method_stub(); | |
1187
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2393 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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2394 StubRoutines::throw_AbstractMethodError_entry(), |
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|
2395 wrong_method, wrong_method); |
0 | 2396 } |
2397 | |
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2398 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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2399 address i2c_entry, |
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2400 address c2i_entry, |
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2401 address c2i_unverified_entry) { |
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2402 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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2403 } |
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2404 |
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2405 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2406 // Use customized signature handler. Need to lock around updates to |
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2407 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2408 // and a single writer: this could be fixed if it becomes a |
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2409 // problem). |
0 | 2410 |
2411 // Get the address of the ic_miss handlers before we grab the | |
2412 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
2413 // was caused by the initialization of the stubs happening | |
2414 // while we held the lock and then notifying jvmti while | |
2415 // holding it. This just forces the initialization to be a little | |
2416 // earlier. | |
2417 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
2418 assert(ic_miss != NULL, "must have handler"); | |
2419 | |
1187
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2420 ResourceMark rm; |
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2421 |
1748 | 2422 NOT_PRODUCT(int insts_size); |
1299
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2423 AdapterBlob* B = NULL; |
742
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2424 AdapterHandlerEntry* entry = NULL; |
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2425 AdapterFingerPrint* fingerprint = NULL; |
0 | 2426 { |
2427 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2428 // make sure data structure is initialized | |
2429 initialize(); | |
2430 | |
2431 if (method->is_abstract()) { | |
1187
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2432 return _abstract_method_handler; |
0 | 2433 } |
2434 | |
1187
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2435 // Fill in the signature array, for the calling-convention call. |
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2436 int total_args_passed = method->size_of_parameters(); // All args on stack |
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2437 |
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2438 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2439 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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2440 int i = 0; |
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2441 if (!method->is_static()) // Pass in receiver first |
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|
2442 sig_bt[i++] = T_OBJECT; |
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|
2443 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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2444 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2445 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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2446 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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|
2447 } |
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2448 assert(i == total_args_passed, ""); |
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|
2449 |
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2450 // Lookup method signature's fingerprint |
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|
2451 entry = _adapters->lookup(total_args_passed, sig_bt); |
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2452 |
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2453 #ifdef ASSERT |
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|
2454 AdapterHandlerEntry* shared_entry = NULL; |
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|
2455 if (VerifyAdapterSharing && entry != NULL) { |
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|
2456 shared_entry = entry; |
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2457 entry = NULL; |
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|
2458 } |
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|
2459 #endif |
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|
2460 |
1187
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parents:
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diff
changeset
|
2461 if (entry != NULL) { |
cf0685d550f1
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diff
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|
2462 return entry; |
0 | 2463 } |
2464 | |
1207
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|
2465 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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|
2466 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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|
2467 |
1187
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changeset
|
2468 // Make a C heap allocated version of the fingerprint to store in the adapter |
1207
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|
2469 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
1187
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parents:
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diff
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|
2470 |
0 | 2471 // Create I2C & C2I handlers |
2472 | |
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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|
2473 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
742
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diff
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|
2474 if (buf != NULL) { |
1748 | 2475 CodeBuffer buffer(buf); |
742
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6834177: Running jsynprog on Solaris Nevada can cause JVM crash
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diff
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|
2476 short buffer_locs[20]; |
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diff
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|
2477 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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|
2478 sizeof(buffer_locs)/sizeof(relocInfo)); |
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diff
changeset
|
2479 MacroAssembler _masm(&buffer); |
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|
2480 |
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|
2481 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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|
2482 total_args_passed, |
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diff
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|
2483 comp_args_on_stack, |
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|
2484 sig_bt, |
1187
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diff
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|
2485 regs, |
cf0685d550f1
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|
2486 fingerprint); |
0 | 2487 |
1207
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diff
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|
2488 #ifdef ASSERT |
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diff
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|
2489 if (VerifyAdapterSharing) { |
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|
2490 if (shared_entry != NULL) { |
1748 | 2491 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt), |
1207
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|
2492 "code must match"); |
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diff
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|
2493 // Release the one just created and return the original |
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diff
changeset
|
2494 _adapters->free_entry(entry); |
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|
2495 return shared_entry; |
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|
2496 } else { |
1748 | 2497 entry->save_code(buf->code_begin(), buffer.insts_size(), total_args_passed, sig_bt); |
1207
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|
2498 } |
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diff
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|
2499 } |
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|
2500 #endif |
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|
2501 |
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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|
2502 B = AdapterBlob::create(&buffer); |
1748 | 2503 NOT_PRODUCT(insts_size = buffer.insts_size()); |
742
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diff
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|
2504 } |
28 | 2505 if (B == NULL) { |
2506 // CodeCache is full, disable compilation | |
2507 // Ought to log this but compile log is only per compile thread | |
2508 // and we're some non descript Java thread. | |
1202 | 2509 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
2510 CompileBroker::handle_full_code_cache(); | |
1187
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|
2511 return NULL; // Out of CodeCache space |
28 | 2512 } |
1748 | 2513 entry->relocate(B->content_begin()); |
0 | 2514 #ifndef PRODUCT |
2515 // debugging suppport | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2516 if (PrintAdapterHandlers || PrintStubCode) { |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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6792
diff
changeset
|
2517 ttyLocker ttyl; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2518 entry->print_adapter_on(tty); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
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|
2519 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2520 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
6266
1d7922586cf6
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diff
changeset
|
2521 method->signature()->as_C_string(), insts_size); |
0 | 2522 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2523 if (Verbose || PrintStubCode) { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2524 address first_pc = entry->base_address(); |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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diff
changeset
|
2525 if (first_pc != NULL) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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diff
changeset
|
2526 Disassembler::decode(first_pc, first_pc + insts_size); |
6796
b31471cdc53e
7200163: add CodeComments functionality to assember stubs
kvn
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6792
diff
changeset
|
2527 tty->cr(); |
b31471cdc53e
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diff
changeset
|
2528 } |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2529 } |
0 | 2530 } |
2531 #endif | |
2532 | |
1187
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diff
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|
2533 _adapters->add(entry); |
0 | 2534 } |
2535 // Outside of the lock | |
2536 if (B != NULL) { | |
2537 char blob_id[256]; | |
2538 jio_snprintf(blob_id, | |
2539 sizeof(blob_id), | |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2540 "%s(%s)@" PTR_FORMAT, |
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
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1295
diff
changeset
|
2541 B->name(), |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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1142
diff
changeset
|
2542 fingerprint->as_string(), |
1748 | 2543 B->content_begin()); |
2544 Forte::register_stub(blob_id, B->content_begin(), B->content_end()); | |
0 | 2545 |
2546 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
1748 | 2547 JvmtiExport::post_dynamic_code_generated(blob_id, B->content_begin(), B->content_end()); |
0 | 2548 } |
2549 } | |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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parents:
1142
diff
changeset
|
2550 return entry; |
0 | 2551 } |
2552 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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diff
changeset
|
2553 address AdapterHandlerEntry::base_address() { |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2554 address base = _i2c_entry; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2555 if (base == NULL) base = _c2i_entry; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2556 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2557 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2558 return base; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2559 } |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2560 |
0 | 2561 void AdapterHandlerEntry::relocate(address new_base) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2562 address old_base = base_address(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2563 assert(old_base != NULL, ""); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2564 ptrdiff_t delta = new_base - old_base; |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2565 if (_i2c_entry != NULL) |
0 | 2566 _i2c_entry += delta; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
changeset
|
2567 if (_c2i_entry != NULL) |
0 | 2568 _c2i_entry += delta; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2569 if (_c2i_unverified_entry != NULL) |
0 | 2570 _c2i_unverified_entry += delta; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
2571 assert(base_address() == new_base, ""); |
0 | 2572 } |
2573 | |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2574 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2575 void AdapterHandlerEntry::deallocate() { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2576 delete _fingerprint; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2577 #ifdef ASSERT |
6197 | 2578 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
2579 if (_saved_sig) FREE_C_HEAP_ARRAY(Basictype, _saved_sig, mtCode); | |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2580 #endif |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2581 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2582 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
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diff
changeset
|
2583 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2584 #ifdef ASSERT |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2585 // Capture the code before relocation so that it can be compared |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2586 // against other versions. If the code is captured after relocation |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2587 // then relative instructions won't be equivalent. |
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6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2588 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
6197 | 2589 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2590 _code_length = length; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2591 memcpy(_saved_code, buffer, length); |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2592 _total_args_passed = total_args_passed; |
6197 | 2593 _saved_sig = NEW_C_HEAP_ARRAY(BasicType, _total_args_passed, mtCode); |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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1205
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changeset
|
2594 memcpy(_saved_sig, sig_bt, _total_args_passed * sizeof(BasicType)); |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2595 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2596 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2597 |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2598 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length, int total_args_passed, BasicType* sig_bt) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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changeset
|
2599 if (length != _code_length) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2600 return false; |
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6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2601 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2602 for (int i = 0; i < length; i++) { |
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6921922: fix for 6911204 breaks tagged stack interpreter
never
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diff
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|
2603 if (buffer[i] != _saved_code[i]) { |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1205
diff
changeset
|
2604 return false; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2605 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
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diff
changeset
|
2606 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2607 return true; |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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parents:
1205
diff
changeset
|
2608 } |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
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diff
changeset
|
2609 #endif |
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diff
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|
2610 |
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|
2611 |
0 | 2612 // Create a native wrapper for this native method. The wrapper converts the |
2613 // java compiled calling convention to the native convention, handlizes | |
2614 // arguments, and transitions to native. On return from the native we transition | |
2615 // back to java blocking if a safepoint is in progress. | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
diff
changeset
|
2616 nmethod *AdapterHandlerLibrary::create_native_wrapper(methodHandle method, int compile_id) { |
0 | 2617 ResourceMark rm; |
2618 nmethod* nm = NULL; | |
2619 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2620 assert(method->is_native(), "must be native"); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2621 assert(method->is_method_handle_intrinsic() || |
1d7922586cf6
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changeset
|
2622 method->has_native_function(), "must have something valid to call!"); |
0 | 2623 |
2624 { | |
2625 // perform the work while holding the lock, but perform any printing outside the lock | |
2626 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2627 // See if somebody beat us to it | |
2628 nm = method->code(); | |
2629 if (nm) { | |
2630 return nm; | |
2631 } | |
2632 | |
742
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|
2633 ResourceMark rm; |
0 | 2634 |
742
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changeset
|
2635 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
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|
2636 if (buf != NULL) { |
1748 | 2637 CodeBuffer buffer(buf); |
742
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changeset
|
2638 double locs_buf[20]; |
45463a04ca27
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2639 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
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2640 MacroAssembler _masm(&buffer); |
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2641 |
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2642 // Fill in the signature array, for the calling-convention call. |
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2643 const int total_args_passed = method->size_of_parameters(); |
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2644 |
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2645 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2646 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
742
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2647 int i=0; |
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2648 if( !method->is_static() ) // Pass in receiver first |
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2649 sig_bt[i++] = T_OBJECT; |
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2650 SignatureStream ss(method->signature()); |
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2651 for( ; !ss.at_return_type(); ss.next()) { |
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2652 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2653 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
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2654 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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2655 } |
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2656 assert(i == total_args_passed, ""); |
742
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2657 BasicType ret_type = ss.type(); |
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2658 |
6266
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2659 // Now get the compiled-Java layout as input (or output) arguments. |
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2660 // NOTE: Stubs for compiled entry points of method handle intrinsics |
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2661 // are just trampolines so the argument registers must be outgoing ones. |
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2662 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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2663 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
742
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2664 |
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2665 // Generate the compiled-to-native wrapper code |
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2666 nm = SharedRuntime::generate_native_wrapper(&_masm, |
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2667 method, |
2405
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2668 compile_id, |
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2669 sig_bt, |
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|
2670 regs, |
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2671 ret_type); |
0 | 2672 } |
2673 } | |
2674 | |
2675 // Must unlock before calling set_code | |
1728
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|
2676 |
0 | 2677 // Install the generated code. |
2678 if (nm != NULL) { | |
2405
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|
2679 if (PrintCompilation) { |
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|
2680 ttyLocker ttyl; |
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|
2681 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
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|
2682 } |
0 | 2683 method->set_code(method, nm); |
2684 nm->post_compiled_method_load_event(); | |
2685 } else { | |
2686 // CodeCache is full, disable compilation | |
1202 | 2687 CompileBroker::handle_full_code_cache(); |
0 | 2688 } |
2689 return nm; | |
2690 } | |
2691 | |
4873
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|
2692 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
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|
2693 assert(thread == JavaThread::current(), "must be"); |
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|
2694 // The code is about to enter a JNI lazy critical native method and |
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diff
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|
2695 // _needs_gc is true, so if this thread is already in a critical |
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|
2696 // section then just return, otherwise this thread should block |
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|
2697 // until needs_gc has been cleared. |
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|
2698 if (thread->in_critical()) { |
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diff
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|
2699 return; |
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diff
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|
2700 } |
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|
2701 // Lock and unlock a critical section to give the system a chance to block |
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|
2702 GC_locker::lock_critical(thread); |
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diff
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|
2703 GC_locker::unlock_critical(thread); |
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diff
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|
2704 JRT_END |
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|
2705 |
116
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2706 #ifdef HAVE_DTRACE_H |
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2707 // Create a dtrace nmethod for this method. The wrapper converts the |
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2708 // java compiled calling convention to the native convention, makes a dummy call |
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2709 // (actually nops for the size of the call instruction, which become a trap if |
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2710 // probe is enabled). The returns to the caller. Since this all looks like a |
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2711 // leaf no thread transition is needed. |
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|
2712 |
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|
2713 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
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|
2714 ResourceMark rm; |
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|
2715 nmethod* nm = NULL; |
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|
2716 |
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2717 if (PrintCompilation) { |
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2718 ttyLocker ttyl; |
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2719 tty->print("--- n%s "); |
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2720 method->print_short_name(tty); |
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2721 if (method->is_static()) { |
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2722 tty->print(" (static)"); |
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|
2723 } |
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|
2724 tty->cr(); |
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diff
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|
2725 } |
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|
2726 |
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diff
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|
2727 { |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
2728 // perform the work while holding the lock, but perform any printing |
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|
2729 // outside the lock |
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diff
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|
2730 MutexLocker mu(AdapterHandlerLibrary_lock); |
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diff
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|
2731 // See if somebody beat us to it |
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diff
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|
2732 nm = method->code(); |
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diff
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|
2733 if (nm) { |
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diff
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|
2734 return nm; |
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diff
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|
2735 } |
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|
2736 |
742
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|
2737 ResourceMark rm; |
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|
2738 |
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|
2739 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
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|
2740 if (buf != NULL) { |
1748 | 2741 CodeBuffer buffer(buf); |
742
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|
2742 // Need a few relocation entries |
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|
2743 double locs_buf[20]; |
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|
2744 buffer.insts()->initialize_shared_locs( |
116
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|
2745 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
742
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|
2746 MacroAssembler _masm(&buffer); |
116
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|
2747 |
742
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|
2748 // Generate the compiled-to-native wrapper code |
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|
2749 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
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2750 } |
116
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|
2751 } |
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|
2752 return nm; |
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diff
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|
2753 } |
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|
2754 |
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|
2755 // the dtrace method needs to convert java lang string to utf8 string. |
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diff
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|
2756 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
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|
2757 typeArrayOop jlsValue = java_lang_String::value(src); |
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|
2758 int jlsOffset = java_lang_String::offset(src); |
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|
2759 int jlsLen = java_lang_String::length(src); |
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|
2760 jchar* jlsPos = (jlsLen == 0) ? NULL : |
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|
2761 jlsValue->char_at_addr(jlsOffset); |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6796
diff
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|
2762 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
116
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|
2763 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
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|
2764 } |
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|
2765 #endif // ndef HAVE_DTRACE_H |
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|
2766 |
0 | 2767 // ------------------------------------------------------------------------- |
2768 // Java-Java calling convention | |
2769 // (what you use when Java calls Java) | |
2770 | |
2771 //------------------------------name_for_receiver---------------------------------- | |
2772 // For a given signature, return the VMReg for parameter 0. | |
2773 VMReg SharedRuntime::name_for_receiver() { | |
2774 VMRegPair regs; | |
2775 BasicType sig_bt = T_OBJECT; | |
2776 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
2777 // Return argument 0 register. In the LP64 build pointers | |
2778 // take 2 registers, but the VM wants only the 'main' name. | |
2779 return regs.first(); | |
2780 } | |
2781 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2142
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|
2782 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, int* arg_size) { |
0 | 2783 // This method is returning a data structure allocating as a |
2784 // ResourceObject, so do not put any ResourceMarks in here. | |
2785 char *s = sig->as_C_string(); | |
2786 int len = (int)strlen(s); | |
2787 *s++; len--; // Skip opening paren | |
2788 char *t = s+len; | |
2789 while( *(--t) != ')' ) ; // Find close paren | |
2790 | |
2791 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
2792 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
2793 int cnt = 0; | |
1138
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2794 if (has_receiver) { |
0 | 2795 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
2796 } | |
2797 | |
2798 while( s < t ) { | |
2799 switch( *s++ ) { // Switch on signature character | |
2800 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
2801 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
2802 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
2803 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
2804 case 'I': sig_bt[cnt++] = T_INT; break; | |
2805 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
2806 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
2807 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
2808 case 'V': sig_bt[cnt++] = T_VOID; break; | |
2809 case 'L': // Oop | |
2810 while( *s++ != ';' ) ; // Skip signature | |
2811 sig_bt[cnt++] = T_OBJECT; | |
2812 break; | |
2813 case '[': { // Array | |
2814 do { // Skip optional size | |
2815 while( *s >= '0' && *s <= '9' ) s++; | |
2816 } while( *s++ == '[' ); // Nested arrays? | |
2817 // Skip element type | |
2818 if( s[-1] == 'L' ) | |
2819 while( *s++ != ';' ) ; // Skip signature | |
2820 sig_bt[cnt++] = T_ARRAY; | |
2821 break; | |
2822 } | |
2823 default : ShouldNotReachHere(); | |
2824 } | |
2825 } | |
2826 assert( cnt < 256, "grow table size" ); | |
2827 | |
2828 int comp_args_on_stack; | |
2829 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
2830 | |
2831 // the calling convention doesn't count out_preserve_stack_slots so | |
2832 // we must add that in to get "true" stack offsets. | |
2833 | |
2834 if (comp_args_on_stack) { | |
2835 for (int i = 0; i < cnt; i++) { | |
2836 VMReg reg1 = regs[i].first(); | |
2837 if( reg1->is_stack()) { | |
2838 // Yuck | |
2839 reg1 = reg1->bias(out_preserve_stack_slots()); | |
2840 } | |
2841 VMReg reg2 = regs[i].second(); | |
2842 if( reg2->is_stack()) { | |
2843 // Yuck | |
2844 reg2 = reg2->bias(out_preserve_stack_slots()); | |
2845 } | |
2846 regs[i].set_pair(reg2, reg1); | |
2847 } | |
2848 } | |
2849 | |
2850 // results | |
2851 *arg_size = cnt; | |
2852 return regs; | |
2853 } | |
2854 | |
2855 // OSR Migration Code | |
2856 // | |
2857 // This code is used convert interpreter frames into compiled frames. It is | |
2858 // called from very start of a compiled OSR nmethod. A temp array is | |
2859 // allocated to hold the interesting bits of the interpreter frame. All | |
2860 // active locks are inflated to allow them to move. The displaced headers and | |
2861 // active interpeter locals are copied into the temp buffer. Then we return | |
2862 // back to the compiled code. The compiled code then pops the current | |
2863 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
2864 // copies the interpreter locals and displaced headers where it wants. | |
2865 // Finally it calls back to free the temp buffer. | |
2866 // | |
2867 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
2868 | |
2869 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
2870 | |
2871 #ifdef IA64 | |
2872 ShouldNotReachHere(); // NYI | |
2873 #endif /* IA64 */ | |
2874 | |
2875 // | |
2876 // This code is dependent on the memory layout of the interpreter local | |
2877 // array and the monitors. On all of our platforms the layout is identical | |
2878 // so this code is shared. If some platform lays the their arrays out | |
2879 // differently then this code could move to platform specific code or | |
2880 // the code here could be modified to copy items one at a time using | |
2881 // frame accessor methods and be platform independent. | |
2882 | |
2883 frame fr = thread->last_frame(); | |
2884 assert( fr.is_interpreted_frame(), "" ); | |
2885 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
2886 | |
2887 // Figure out how many monitors are active. | |
2888 int active_monitor_count = 0; | |
2889 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
2890 kptr < fr.interpreter_frame_monitor_begin(); | |
2891 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
2892 if( kptr->obj() != NULL ) active_monitor_count++; | |
2893 } | |
2894 | |
2895 // QQQ we could place number of active monitors in the array so that compiled code | |
2896 // could double check it. | |
2897 | |
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2898 Method* moop = fr.interpreter_frame_method(); |
0 | 2899 int max_locals = moop->max_locals(); |
2900 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
2901 int buf_size_words = max_locals + active_monitor_count*2; | |
6197 | 2902 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
0 | 2903 |
2904 // Copy the locals. Order is preserved so that loading of longs works. | |
2905 // Since there's no GC I can copy the oops blindly. | |
2906 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
1506 | 2907 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
0 | 2908 (HeapWord*)&buf[0], |
2909 max_locals); | |
2910 | |
2911 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
2912 int i = max_locals; | |
2913 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
2914 kptr2 < fr.interpreter_frame_monitor_begin(); | |
2915 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
2916 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
2917 BasicLock *lock = kptr2->lock(); | |
2918 // Inflate so the displaced header becomes position-independent | |
2919 if (lock->displaced_header()->is_unlocked()) | |
2920 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
2921 // Now the displaced header is free to move | |
2922 buf[i++] = (intptr_t)lock->displaced_header(); | |
2923 buf[i++] = (intptr_t)kptr2->obj(); | |
2924 } | |
2925 } | |
2926 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
2927 | |
2928 return buf; | |
2929 JRT_END | |
2930 | |
2931 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
6197 | 2932 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
0 | 2933 JRT_END |
2934 | |
2935 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
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2936 AdapterHandlerTableIterator iter(_adapters); |
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2937 while (iter.has_next()) { |
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2938 AdapterHandlerEntry* a = iter.next(); |
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2939 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
0 | 2940 } |
2941 return false; | |
2942 } | |
2943 | |
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2944 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
1187
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2945 AdapterHandlerTableIterator iter(_adapters); |
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2946 while (iter.has_next()) { |
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2947 AdapterHandlerEntry* a = iter.next(); |
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2948 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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2949 st->print("Adapter for signature: "); |
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2950 a->print_adapter_on(tty); |
0 | 2951 return; |
2952 } | |
2953 } | |
2954 assert(false, "Should have found handler"); | |
2955 } | |
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2956 |
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2957 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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2958 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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2959 (intptr_t) this, fingerprint()->as_string(), |
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2960 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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2961 |
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2962 } |
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2963 |
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2964 #ifndef PRODUCT |
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2965 |
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2966 void AdapterHandlerLibrary::print_statistics() { |
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2967 _adapters->print_statistics(); |
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2968 } |
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2969 |
0 | 2970 #endif /* PRODUCT */ |