Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/sharedRuntime.cpp @ 14495:cd5d10655495
8027754: Enable loop optimizations for loops with MathExact inside
Reviewed-by: kvn, iveresov
author | rbackman |
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date | Thu, 23 Jan 2014 12:08:28 +0100 |
parents | 28f281e8de1d |
children | d8041d695d19 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "code/compiledIC.hpp" | |
29 #include "code/scopeDesc.hpp" | |
30 #include "code/vtableStubs.hpp" | |
31 #include "compiler/abstractCompiler.hpp" | |
32 #include "compiler/compileBroker.hpp" | |
33 #include "compiler/compilerOracle.hpp" | |
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34 #include "compiler/disassembler.hpp" |
1972 | 35 #include "interpreter/interpreter.hpp" |
36 #include "interpreter/interpreterRuntime.hpp" | |
37 #include "memory/gcLocker.inline.hpp" | |
38 #include "memory/universe.inline.hpp" | |
39 #include "oops/oop.inline.hpp" | |
40 #include "prims/forte.hpp" | |
41 #include "prims/jvmtiExport.hpp" | |
42 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
43 #include "prims/methodHandles.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "runtime/arguments.hpp" | |
46 #include "runtime/biasedLocking.hpp" | |
47 #include "runtime/handles.inline.hpp" | |
48 #include "runtime/init.hpp" | |
49 #include "runtime/interfaceSupport.hpp" | |
50 #include "runtime/javaCalls.hpp" | |
51 #include "runtime/sharedRuntime.hpp" | |
52 #include "runtime/stubRoutines.hpp" | |
53 #include "runtime/vframe.hpp" | |
54 #include "runtime/vframeArray.hpp" | |
55 #include "utilities/copy.hpp" | |
56 #include "utilities/dtrace.hpp" | |
57 #include "utilities/events.hpp" | |
58 #include "utilities/hashtable.inline.hpp" | |
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59 #include "utilities/macros.hpp" |
1972 | 60 #include "utilities/xmlstream.hpp" |
61 #ifdef TARGET_ARCH_x86 | |
62 # include "nativeInst_x86.hpp" | |
63 # include "vmreg_x86.inline.hpp" | |
64 #endif | |
65 #ifdef TARGET_ARCH_sparc | |
66 # include "nativeInst_sparc.hpp" | |
67 # include "vmreg_sparc.inline.hpp" | |
68 #endif | |
69 #ifdef TARGET_ARCH_zero | |
70 # include "nativeInst_zero.hpp" | |
71 # include "vmreg_zero.inline.hpp" | |
72 #endif | |
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73 #ifdef TARGET_ARCH_arm |
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74 # include "nativeInst_arm.hpp" |
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75 # include "vmreg_arm.inline.hpp" |
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76 #endif |
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77 #ifdef TARGET_ARCH_ppc |
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78 # include "nativeInst_ppc.hpp" |
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79 # include "vmreg_ppc.inline.hpp" |
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80 #endif |
1972 | 81 #ifdef COMPILER1 |
82 #include "c1/c1_Runtime1.hpp" | |
83 #endif | |
84 | |
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85 // Shared stub locations |
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86 RuntimeStub* SharedRuntime::_wrong_method_blob; |
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87 RuntimeStub* SharedRuntime::_wrong_method_abstract_blob; |
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88 RuntimeStub* SharedRuntime::_ic_miss_blob; |
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89 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; |
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90 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; |
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91 RuntimeStub* SharedRuntime::_resolve_static_call_blob; |
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92 |
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93 DeoptimizationBlob* SharedRuntime::_deopt_blob; |
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94 SafepointBlob* SharedRuntime::_polling_page_vectors_safepoint_handler_blob; |
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95 SafepointBlob* SharedRuntime::_polling_page_safepoint_handler_blob; |
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96 SafepointBlob* SharedRuntime::_polling_page_return_handler_blob; |
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97 |
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98 #ifdef COMPILER2 |
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99 UncommonTrapBlob* SharedRuntime::_uncommon_trap_blob; |
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100 #endif // COMPILER2 |
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101 |
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102 |
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103 //----------------------------generate_stubs----------------------------------- |
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104 void SharedRuntime::generate_stubs() { |
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105 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), "wrong_method_stub"); |
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106 _wrong_method_abstract_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_abstract), "wrong_method_abstract_stub"); |
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107 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), "ic_miss_stub"); |
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108 _resolve_opt_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_opt_virtual_call_C), "resolve_opt_virtual_call"); |
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109 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), "resolve_virtual_call"); |
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110 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), "resolve_static_call"); |
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111 |
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112 #ifdef COMPILER2 |
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113 // Vectors are generated only by C2. |
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114 if (is_wide_vector(MaxVectorSize)) { |
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115 _polling_page_vectors_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_VECTOR_LOOP); |
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116 } |
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117 #endif // COMPILER2 |
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118 _polling_page_safepoint_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_LOOP); |
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119 _polling_page_return_handler_blob = generate_handler_blob(CAST_FROM_FN_PTR(address, SafepointSynchronize::handle_polling_page_exception), POLL_AT_RETURN); |
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120 |
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121 generate_deopt_blob(); |
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122 |
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123 #ifdef COMPILER2 |
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124 generate_uncommon_trap_blob(); |
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125 #endif // COMPILER2 |
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126 } |
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127 |
0 | 128 #include <math.h> |
129 | |
130 // Implementation of SharedRuntime | |
131 | |
132 #ifndef PRODUCT | |
133 // For statistics | |
134 int SharedRuntime::_ic_miss_ctr = 0; | |
135 int SharedRuntime::_wrong_method_ctr = 0; | |
136 int SharedRuntime::_resolve_static_ctr = 0; | |
137 int SharedRuntime::_resolve_virtual_ctr = 0; | |
138 int SharedRuntime::_resolve_opt_virtual_ctr = 0; | |
139 int SharedRuntime::_implicit_null_throws = 0; | |
140 int SharedRuntime::_implicit_div0_throws = 0; | |
141 int SharedRuntime::_throw_null_ctr = 0; | |
142 | |
143 int SharedRuntime::_nof_normal_calls = 0; | |
144 int SharedRuntime::_nof_optimized_calls = 0; | |
145 int SharedRuntime::_nof_inlined_calls = 0; | |
146 int SharedRuntime::_nof_megamorphic_calls = 0; | |
147 int SharedRuntime::_nof_static_calls = 0; | |
148 int SharedRuntime::_nof_inlined_static_calls = 0; | |
149 int SharedRuntime::_nof_interface_calls = 0; | |
150 int SharedRuntime::_nof_optimized_interface_calls = 0; | |
151 int SharedRuntime::_nof_inlined_interface_calls = 0; | |
152 int SharedRuntime::_nof_megamorphic_interface_calls = 0; | |
153 int SharedRuntime::_nof_removable_exceptions = 0; | |
154 | |
155 int SharedRuntime::_new_instance_ctr=0; | |
156 int SharedRuntime::_new_array_ctr=0; | |
157 int SharedRuntime::_multi1_ctr=0; | |
158 int SharedRuntime::_multi2_ctr=0; | |
159 int SharedRuntime::_multi3_ctr=0; | |
160 int SharedRuntime::_multi4_ctr=0; | |
161 int SharedRuntime::_multi5_ctr=0; | |
162 int SharedRuntime::_mon_enter_stub_ctr=0; | |
163 int SharedRuntime::_mon_exit_stub_ctr=0; | |
164 int SharedRuntime::_mon_enter_ctr=0; | |
165 int SharedRuntime::_mon_exit_ctr=0; | |
166 int SharedRuntime::_partial_subtype_ctr=0; | |
167 int SharedRuntime::_jbyte_array_copy_ctr=0; | |
168 int SharedRuntime::_jshort_array_copy_ctr=0; | |
169 int SharedRuntime::_jint_array_copy_ctr=0; | |
170 int SharedRuntime::_jlong_array_copy_ctr=0; | |
171 int SharedRuntime::_oop_array_copy_ctr=0; | |
172 int SharedRuntime::_checkcast_array_copy_ctr=0; | |
173 int SharedRuntime::_unsafe_array_copy_ctr=0; | |
174 int SharedRuntime::_generic_array_copy_ctr=0; | |
175 int SharedRuntime::_slow_array_copy_ctr=0; | |
176 int SharedRuntime::_find_handler_ctr=0; | |
177 int SharedRuntime::_rethrow_ctr=0; | |
178 | |
179 int SharedRuntime::_ICmiss_index = 0; | |
180 int SharedRuntime::_ICmiss_count[SharedRuntime::maxICmiss_count]; | |
181 address SharedRuntime::_ICmiss_at[SharedRuntime::maxICmiss_count]; | |
182 | |
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183 |
0 | 184 void SharedRuntime::trace_ic_miss(address at) { |
185 for (int i = 0; i < _ICmiss_index; i++) { | |
186 if (_ICmiss_at[i] == at) { | |
187 _ICmiss_count[i]++; | |
188 return; | |
189 } | |
190 } | |
191 int index = _ICmiss_index++; | |
192 if (_ICmiss_index >= maxICmiss_count) _ICmiss_index = maxICmiss_count - 1; | |
193 _ICmiss_at[index] = at; | |
194 _ICmiss_count[index] = 1; | |
195 } | |
196 | |
197 void SharedRuntime::print_ic_miss_histogram() { | |
198 if (ICMissHistogram) { | |
199 tty->print_cr ("IC Miss Histogram:"); | |
200 int tot_misses = 0; | |
201 for (int i = 0; i < _ICmiss_index; i++) { | |
202 tty->print_cr(" at: " INTPTR_FORMAT " nof: %d", _ICmiss_at[i], _ICmiss_count[i]); | |
203 tot_misses += _ICmiss_count[i]; | |
204 } | |
205 tty->print_cr ("Total IC misses: %7d", tot_misses); | |
206 } | |
207 } | |
208 #endif // PRODUCT | |
209 | |
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210 #if INCLUDE_ALL_GCS |
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211 |
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212 // G1 write-barrier pre: executed before a pointer store. |
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213 JRT_LEAF(void, SharedRuntime::g1_wb_pre(oopDesc* orig, JavaThread *thread)) |
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214 if (orig == NULL) { |
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215 assert(false, "should be optimized out"); |
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216 return; |
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217 } |
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218 assert(orig->is_oop(true /* ignore mark word */), "Error"); |
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219 // store the original value that was in the field reference |
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220 thread->satb_mark_queue().enqueue(orig); |
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221 JRT_END |
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222 |
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223 // G1 write-barrier post: executed after a pointer store. |
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224 JRT_LEAF(void, SharedRuntime::g1_wb_post(void* card_addr, JavaThread* thread)) |
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225 thread->dirty_card_queue().enqueue(card_addr); |
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226 JRT_END |
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227 |
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228 #endif // INCLUDE_ALL_GCS |
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229 |
0 | 230 |
231 JRT_LEAF(jlong, SharedRuntime::lmul(jlong y, jlong x)) | |
232 return x * y; | |
233 JRT_END | |
234 | |
235 | |
236 JRT_LEAF(jlong, SharedRuntime::ldiv(jlong y, jlong x)) | |
237 if (x == min_jlong && y == CONST64(-1)) { | |
238 return x; | |
239 } else { | |
240 return x / y; | |
241 } | |
242 JRT_END | |
243 | |
244 | |
245 JRT_LEAF(jlong, SharedRuntime::lrem(jlong y, jlong x)) | |
246 if (x == min_jlong && y == CONST64(-1)) { | |
247 return 0; | |
248 } else { | |
249 return x % y; | |
250 } | |
251 JRT_END | |
252 | |
253 | |
254 const juint float_sign_mask = 0x7FFFFFFF; | |
255 const juint float_infinity = 0x7F800000; | |
256 const julong double_sign_mask = CONST64(0x7FFFFFFFFFFFFFFF); | |
257 const julong double_infinity = CONST64(0x7FF0000000000000); | |
258 | |
259 JRT_LEAF(jfloat, SharedRuntime::frem(jfloat x, jfloat y)) | |
260 #ifdef _WIN64 | |
261 // 64-bit Windows on amd64 returns the wrong values for | |
262 // infinity operands. | |
263 union { jfloat f; juint i; } xbits, ybits; | |
264 xbits.f = x; | |
265 ybits.f = y; | |
266 // x Mod Infinity == x unless x is infinity | |
267 if ( ((xbits.i & float_sign_mask) != float_infinity) && | |
268 ((ybits.i & float_sign_mask) == float_infinity) ) { | |
269 return x; | |
270 } | |
271 #endif | |
272 return ((jfloat)fmod((double)x,(double)y)); | |
273 JRT_END | |
274 | |
275 | |
276 JRT_LEAF(jdouble, SharedRuntime::drem(jdouble x, jdouble y)) | |
277 #ifdef _WIN64 | |
278 union { jdouble d; julong l; } xbits, ybits; | |
279 xbits.d = x; | |
280 ybits.d = y; | |
281 // x Mod Infinity == x unless x is infinity | |
282 if ( ((xbits.l & double_sign_mask) != double_infinity) && | |
283 ((ybits.l & double_sign_mask) == double_infinity) ) { | |
284 return x; | |
285 } | |
286 #endif | |
287 return ((jdouble)fmod((double)x,(double)y)); | |
288 JRT_END | |
289 | |
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290 #ifdef __SOFTFP__ |
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291 JRT_LEAF(jfloat, SharedRuntime::fadd(jfloat x, jfloat y)) |
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292 return x + y; |
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293 JRT_END |
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294 |
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295 JRT_LEAF(jfloat, SharedRuntime::fsub(jfloat x, jfloat y)) |
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296 return x - y; |
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297 JRT_END |
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298 |
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299 JRT_LEAF(jfloat, SharedRuntime::fmul(jfloat x, jfloat y)) |
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300 return x * y; |
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301 JRT_END |
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302 |
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303 JRT_LEAF(jfloat, SharedRuntime::fdiv(jfloat x, jfloat y)) |
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304 return x / y; |
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305 JRT_END |
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306 |
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307 JRT_LEAF(jdouble, SharedRuntime::dadd(jdouble x, jdouble y)) |
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308 return x + y; |
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309 JRT_END |
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310 |
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311 JRT_LEAF(jdouble, SharedRuntime::dsub(jdouble x, jdouble y)) |
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312 return x - y; |
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313 JRT_END |
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314 |
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315 JRT_LEAF(jdouble, SharedRuntime::dmul(jdouble x, jdouble y)) |
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316 return x * y; |
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317 JRT_END |
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318 |
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319 JRT_LEAF(jdouble, SharedRuntime::ddiv(jdouble x, jdouble y)) |
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320 return x / y; |
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321 JRT_END |
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322 |
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323 JRT_LEAF(jfloat, SharedRuntime::i2f(jint x)) |
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324 return (jfloat)x; |
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325 JRT_END |
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326 |
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327 JRT_LEAF(jdouble, SharedRuntime::i2d(jint x)) |
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328 return (jdouble)x; |
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329 JRT_END |
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330 |
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331 JRT_LEAF(jdouble, SharedRuntime::f2d(jfloat x)) |
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332 return (jdouble)x; |
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333 JRT_END |
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334 |
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335 JRT_LEAF(int, SharedRuntime::fcmpl(float x, float y)) |
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336 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan*/ |
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337 JRT_END |
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338 |
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339 JRT_LEAF(int, SharedRuntime::fcmpg(float x, float y)) |
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340 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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341 JRT_END |
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342 |
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343 JRT_LEAF(int, SharedRuntime::dcmpl(double x, double y)) |
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344 return x>y ? 1 : (x==y ? 0 : -1); /* x<y or is_nan */ |
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345 JRT_END |
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346 |
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347 JRT_LEAF(int, SharedRuntime::dcmpg(double x, double y)) |
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348 return x<y ? -1 : (x==y ? 0 : 1); /* x>y or is_nan */ |
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349 JRT_END |
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350 |
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351 // Functions to return the opposite of the aeabi functions for nan. |
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352 JRT_LEAF(int, SharedRuntime::unordered_fcmplt(float x, float y)) |
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353 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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354 JRT_END |
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355 |
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356 JRT_LEAF(int, SharedRuntime::unordered_dcmplt(double x, double y)) |
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357 return (x < y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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358 JRT_END |
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359 |
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360 JRT_LEAF(int, SharedRuntime::unordered_fcmple(float x, float y)) |
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361 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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362 JRT_END |
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363 |
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364 JRT_LEAF(int, SharedRuntime::unordered_dcmple(double x, double y)) |
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365 return (x <= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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366 JRT_END |
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367 |
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368 JRT_LEAF(int, SharedRuntime::unordered_fcmpge(float x, float y)) |
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369 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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370 JRT_END |
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371 |
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372 JRT_LEAF(int, SharedRuntime::unordered_dcmpge(double x, double y)) |
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373 return (x >= y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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374 JRT_END |
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375 |
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376 JRT_LEAF(int, SharedRuntime::unordered_fcmpgt(float x, float y)) |
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377 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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378 JRT_END |
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379 |
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380 JRT_LEAF(int, SharedRuntime::unordered_dcmpgt(double x, double y)) |
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381 return (x > y) ? 1 : ((g_isnan(x) || g_isnan(y)) ? 1 : 0); |
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382 JRT_END |
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383 |
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384 // Intrinsics make gcc generate code for these. |
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385 float SharedRuntime::fneg(float f) { |
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386 return -f; |
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387 } |
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388 |
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389 double SharedRuntime::dneg(double f) { |
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390 return -f; |
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391 } |
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392 |
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393 #endif // __SOFTFP__ |
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394 |
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395 #if defined(__SOFTFP__) || defined(E500V2) |
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396 // Intrinsics make gcc generate code for these. |
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397 double SharedRuntime::dabs(double f) { |
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398 return (f <= (double)0.0) ? (double)0.0 - f : f; |
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399 } |
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400 |
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401 #endif |
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402 |
14390 | 403 #if defined(__SOFTFP__) || defined(PPC32) |
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404 double SharedRuntime::dsqrt(double f) { |
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405 return sqrt(f); |
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406 } |
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407 #endif |
0 | 408 |
409 JRT_LEAF(jint, SharedRuntime::f2i(jfloat x)) | |
508
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410 if (g_isnan(x)) |
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411 return 0; |
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412 if (x >= (jfloat) max_jint) |
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413 return max_jint; |
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414 if (x <= (jfloat) min_jint) |
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415 return min_jint; |
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416 return (jint) x; |
0 | 417 JRT_END |
418 | |
419 | |
420 JRT_LEAF(jlong, SharedRuntime::f2l(jfloat x)) | |
508
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421 if (g_isnan(x)) |
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422 return 0; |
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423 if (x >= (jfloat) max_jlong) |
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424 return max_jlong; |
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425 if (x <= (jfloat) min_jlong) |
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426 return min_jlong; |
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427 return (jlong) x; |
0 | 428 JRT_END |
429 | |
430 | |
431 JRT_LEAF(jint, SharedRuntime::d2i(jdouble x)) | |
508
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432 if (g_isnan(x)) |
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433 return 0; |
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434 if (x >= (jdouble) max_jint) |
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435 return max_jint; |
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436 if (x <= (jdouble) min_jint) |
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437 return min_jint; |
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438 return (jint) x; |
0 | 439 JRT_END |
440 | |
441 | |
442 JRT_LEAF(jlong, SharedRuntime::d2l(jdouble x)) | |
508
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443 if (g_isnan(x)) |
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444 return 0; |
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445 if (x >= (jdouble) max_jlong) |
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446 return max_jlong; |
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447 if (x <= (jdouble) min_jlong) |
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448 return min_jlong; |
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449 return (jlong) x; |
0 | 450 JRT_END |
451 | |
452 | |
453 JRT_LEAF(jfloat, SharedRuntime::d2f(jdouble x)) | |
454 return (jfloat)x; | |
455 JRT_END | |
456 | |
457 | |
458 JRT_LEAF(jfloat, SharedRuntime::l2f(jlong x)) | |
459 return (jfloat)x; | |
460 JRT_END | |
461 | |
462 | |
463 JRT_LEAF(jdouble, SharedRuntime::l2d(jlong x)) | |
464 return (jdouble)x; | |
465 JRT_END | |
466 | |
14309 | 467 // Exception handling across interpreter/compiler boundaries |
0 | 468 // |
469 // exception_handler_for_return_address(...) returns the continuation address. | |
470 // The continuation address is the entry point of the exception handler of the | |
471 // previous frame depending on the return address. | |
472 | |
1295 | 473 address SharedRuntime::raw_exception_handler_for_return_address(JavaThread* thread, address return_address) { |
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474 assert(frame::verify_return_pc(return_address), err_msg("must be a return address: " INTPTR_FORMAT, return_address)); |
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475 |
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476 // Reset method handle flag. |
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477 thread->set_is_method_handle_return(false); |
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478 |
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479 // The fastest case first |
0 | 480 CodeBlob* blob = CodeCache::find_blob(return_address); |
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481 nmethod* nm = (blob != NULL) ? blob->as_nmethod_or_null() : NULL; |
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482 if (nm != NULL) { |
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483 // Set flag if return address is a method handle call site. |
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484 thread->set_is_method_handle_return(nm->is_method_handle_return(return_address)); |
0 | 485 // native nmethods don't have exception handlers |
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486 assert(!nm->is_native_method(), "no exception handler"); |
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487 assert(nm->header_begin() != nm->exception_begin(), "no exception handler"); |
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488 if (nm->is_deopt_pc(return_address)) { |
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489 // If we come here because of a stack overflow, the stack may be |
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490 // unguarded. Reguard the stack otherwise if we return to the |
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491 // deopt blob and the stack bang causes a stack overflow we |
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492 // crash. |
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493 bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); |
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494 if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); |
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495 assert(guard_pages_enabled, "stack banging in deopt blob may cause crash"); |
0 | 496 return SharedRuntime::deopt_blob()->unpack_with_exception(); |
497 } else { | |
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498 return nm->exception_begin(); |
0 | 499 } |
500 } | |
501 | |
502 // Entry code | |
503 if (StubRoutines::returns_to_call_stub(return_address)) { | |
504 return StubRoutines::catch_exception_entry(); | |
505 } | |
506 // Interpreted code | |
507 if (Interpreter::contains(return_address)) { | |
508 return Interpreter::rethrow_exception_entry(); | |
509 } | |
510 | |
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511 guarantee(blob == NULL || !blob->is_runtime_stub(), "caller should have skipped stub"); |
0 | 512 guarantee(!VtableStubs::contains(return_address), "NULL exceptions in vtables should have been handled already!"); |
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513 |
0 | 514 #ifndef PRODUCT |
515 { ResourceMark rm; | |
516 tty->print_cr("No exception handler found for exception at " INTPTR_FORMAT " - potential problems:", return_address); | |
517 tty->print_cr("a) exception happened in (new?) code stubs/buffers that is not handled here"); | |
518 tty->print_cr("b) other problem"); | |
519 } | |
520 #endif // PRODUCT | |
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521 |
0 | 522 ShouldNotReachHere(); |
523 return NULL; | |
524 } | |
525 | |
526 | |
1295 | 527 JRT_LEAF(address, SharedRuntime::exception_handler_for_return_address(JavaThread* thread, address return_address)) |
528 return raw_exception_handler_for_return_address(thread, return_address); | |
0 | 529 JRT_END |
530 | |
1295 | 531 |
0 | 532 address SharedRuntime::get_poll_stub(address pc) { |
533 address stub; | |
534 // Look up the code blob | |
535 CodeBlob *cb = CodeCache::find_blob(pc); | |
536 | |
537 // Should be an nmethod | |
538 assert( cb && cb->is_nmethod(), "safepoint polling: pc must refer to an nmethod" ); | |
539 | |
540 // Look up the relocation information | |
541 assert( ((nmethod*)cb)->is_at_poll_or_poll_return(pc), | |
542 "safepoint polling: type must be poll" ); | |
543 | |
544 assert( ((NativeInstruction*)pc)->is_safepoint_poll(), | |
545 "Only polling locations are used for safepoint"); | |
546 | |
547 bool at_poll_return = ((nmethod*)cb)->is_at_poll_return(pc); | |
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548 bool has_wide_vectors = ((nmethod*)cb)->has_wide_vectors(); |
0 | 549 if (at_poll_return) { |
550 assert(SharedRuntime::polling_page_return_handler_blob() != NULL, | |
551 "polling page return stub not created yet"); | |
1748 | 552 stub = SharedRuntime::polling_page_return_handler_blob()->entry_point(); |
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553 } else if (has_wide_vectors) { |
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554 assert(SharedRuntime::polling_page_vectors_safepoint_handler_blob() != NULL, |
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555 "polling page vectors safepoint stub not created yet"); |
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556 stub = SharedRuntime::polling_page_vectors_safepoint_handler_blob()->entry_point(); |
0 | 557 } else { |
558 assert(SharedRuntime::polling_page_safepoint_handler_blob() != NULL, | |
559 "polling page safepoint stub not created yet"); | |
1748 | 560 stub = SharedRuntime::polling_page_safepoint_handler_blob()->entry_point(); |
0 | 561 } |
562 #ifndef PRODUCT | |
563 if( TraceSafepoint ) { | |
564 char buf[256]; | |
565 jio_snprintf(buf, sizeof(buf), | |
566 "... found polling page %s exception at pc = " | |
567 INTPTR_FORMAT ", stub =" INTPTR_FORMAT, | |
568 at_poll_return ? "return" : "loop", | |
569 (intptr_t)pc, (intptr_t)stub); | |
570 tty->print_raw_cr(buf); | |
571 } | |
572 #endif // PRODUCT | |
573 return stub; | |
574 } | |
575 | |
576 | |
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577 oop SharedRuntime::retrieve_receiver( Symbol* sig, frame caller ) { |
0 | 578 assert(caller.is_interpreted_frame(), ""); |
579 int args_size = ArgumentSizeComputer(sig).size() + 1; | |
580 assert(args_size <= caller.interpreter_frame_expression_stack_size(), "receiver must be on interpreter stack"); | |
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581 oop result = cast_to_oop(*caller.interpreter_frame_tos_at(args_size - 1)); |
0 | 582 assert(Universe::heap()->is_in(result) && result->is_oop(), "receiver must be an oop"); |
583 return result; | |
584 } | |
585 | |
586 | |
587 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception) { | |
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588 if (JvmtiExport::can_post_on_exceptions()) { |
0 | 589 vframeStream vfst(thread, true); |
590 methodHandle method = methodHandle(thread, vfst.method()); | |
591 address bcp = method()->bcp_from(vfst.bci()); | |
592 JvmtiExport::post_exception_throw(thread, method(), bcp, h_exception()); | |
593 } | |
594 Exceptions::_throw(thread, __FILE__, __LINE__, h_exception); | |
595 } | |
596 | |
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597 void SharedRuntime::throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message) { |
0 | 598 Handle h_exception = Exceptions::new_exception(thread, name, message); |
599 throw_and_post_jvmti_exception(thread, h_exception); | |
600 } | |
601 | |
610
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602 // The interpreter code to call this tracing function is only |
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603 // called/generated when TraceRedefineClasses has the right bits |
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604 // set. Since obsolete methods are never compiled, we don't have |
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605 // to modify the compilers to generate calls to this function. |
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606 // |
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607 JRT_LEAF(int, SharedRuntime::rc_trace_method_entry( |
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608 JavaThread* thread, Method* method)) |
610
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609 assert(RC_TRACE_IN_RANGE(0x00001000, 0x00002000), "wrong call"); |
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610 |
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611 if (method->is_obsolete()) { |
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612 // We are calling an obsolete method, but this is not necessarily |
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613 // an error. Our method could have been redefined just after we |
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614 // fetched the Method* from the constant pool. |
610
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615 |
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616 // RC_TRACE macro has an embedded ResourceMark |
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617 RC_TRACE_WITH_THREAD(0x00001000, thread, |
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618 ("calling obsolete method '%s'", |
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619 method->name_and_sig_as_C_string())); |
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620 if (RC_TRACE_ENABLED(0x00002000)) { |
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621 // this option is provided to debug calls to obsolete methods |
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622 guarantee(false, "faulting at call to an obsolete method."); |
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623 } |
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624 } |
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625 return 0; |
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626 JRT_END |
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627 |
0 | 628 // ret_pc points into caller; we are returning caller's exception handler |
629 // for given exception | |
630 address SharedRuntime::compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, | |
631 bool force_unwind, bool top_frame_only) { | |
632 assert(nm != NULL, "must exist"); | |
633 ResourceMark rm; | |
634 | |
635 ScopeDesc* sd = nm->scope_desc_at(ret_pc); | |
636 // determine handler bci, if any | |
637 EXCEPTION_MARK; | |
638 | |
639 int handler_bci = -1; | |
640 int scope_depth = 0; | |
641 if (!force_unwind) { | |
642 int bci = sd->bci(); | |
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643 bool recursive_exception = false; |
0 | 644 do { |
645 bool skip_scope_increment = false; | |
646 // exception handler lookup | |
647 KlassHandle ek (THREAD, exception->klass()); | |
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648 methodHandle mh(THREAD, sd->method()); |
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649 handler_bci = Method::fast_exception_handler_bci_for(mh, ek, bci, THREAD); |
0 | 650 if (HAS_PENDING_EXCEPTION) { |
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651 recursive_exception = true; |
0 | 652 // We threw an exception while trying to find the exception handler. |
653 // Transfer the new exception to the exception handle which will | |
654 // be set into thread local storage, and do another lookup for an | |
655 // exception handler for this exception, this time starting at the | |
656 // BCI of the exception handler which caused the exception to be | |
657 // thrown (bugs 4307310 and 4546590). Set "exception" reference | |
658 // argument to ensure that the correct exception is thrown (4870175). | |
659 exception = Handle(THREAD, PENDING_EXCEPTION); | |
660 CLEAR_PENDING_EXCEPTION; | |
661 if (handler_bci >= 0) { | |
662 bci = handler_bci; | |
663 handler_bci = -1; | |
664 skip_scope_increment = true; | |
665 } | |
666 } | |
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667 else { |
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668 recursive_exception = false; |
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669 } |
0 | 670 if (!top_frame_only && handler_bci < 0 && !skip_scope_increment) { |
671 sd = sd->sender(); | |
672 if (sd != NULL) { | |
673 bci = sd->bci(); | |
674 } | |
675 ++scope_depth; | |
676 } | |
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677 } while (recursive_exception || (!top_frame_only && handler_bci < 0 && sd != NULL)); |
0 | 678 } |
679 | |
680 // found handling method => lookup exception handler | |
1748 | 681 int catch_pco = ret_pc - nm->code_begin(); |
0 | 682 |
683 ExceptionHandlerTable table(nm); | |
684 HandlerTableEntry *t = table.entry_for(catch_pco, handler_bci, scope_depth); | |
685 if (t == NULL && (nm->is_compiled_by_c1() || handler_bci != -1)) { | |
686 // Allow abbreviated catch tables. The idea is to allow a method | |
687 // to materialize its exceptions without committing to the exact | |
688 // routing of exceptions. In particular this is needed for adding | |
14309 | 689 // a synthetic handler to unlock monitors when inlining |
690 // synchronized methods since the unlock path isn't represented in | |
0 | 691 // the bytecodes. |
692 t = table.entry_for(catch_pco, -1, 0); | |
693 } | |
694 | |
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695 #ifdef COMPILER1 |
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696 if (t == NULL && nm->is_compiled_by_c1()) { |
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697 assert(nm->unwind_handler_begin() != NULL, ""); |
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698 return nm->unwind_handler_begin(); |
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699 } |
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700 #endif |
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701 |
0 | 702 if (t == NULL) { |
703 tty->print_cr("MISSING EXCEPTION HANDLER for pc " INTPTR_FORMAT " and handler bci %d", ret_pc, handler_bci); | |
704 tty->print_cr(" Exception:"); | |
705 exception->print(); | |
706 tty->cr(); | |
707 tty->print_cr(" Compiled exception table :"); | |
708 table.print(); | |
709 nm->print_code(); | |
710 guarantee(false, "missing exception handler"); | |
711 return NULL; | |
712 } | |
713 | |
1748 | 714 return nm->code_begin() + t->pco(); |
0 | 715 } |
716 | |
717 JRT_ENTRY(void, SharedRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
718 // These errors occur only at call sites | |
719 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_AbstractMethodError()); | |
720 JRT_END | |
721 | |
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722 JRT_ENTRY(void, SharedRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
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723 // These errors occur only at call sites |
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724 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_IncompatibleClassChangeError(), "vtable stub"); |
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725 JRT_END |
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726 |
0 | 727 JRT_ENTRY(void, SharedRuntime::throw_ArithmeticException(JavaThread* thread)) |
728 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArithmeticException(), "/ by zero"); | |
729 JRT_END | |
730 | |
731 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException(JavaThread* thread)) | |
732 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
733 JRT_END | |
734 | |
735 JRT_ENTRY(void, SharedRuntime::throw_NullPointerException_at_call(JavaThread* thread)) | |
736 // This entry point is effectively only used for NullPointerExceptions which occur at inline | |
737 // cache sites (when the callee activation is not yet set up) so we are at a call site | |
738 throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); | |
739 JRT_END | |
740 | |
741 JRT_ENTRY(void, SharedRuntime::throw_StackOverflowError(JavaThread* thread)) | |
742 // We avoid using the normal exception construction in this case because | |
743 // it performs an upcall to Java, and we're already out of stack space. | |
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744 Klass* k = SystemDictionary::StackOverflowError_klass(); |
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745 oop exception_oop = InstanceKlass::cast(k)->allocate_instance(CHECK); |
0 | 746 Handle exception (thread, exception_oop); |
747 if (StackTraceInThrowable) { | |
748 java_lang_Throwable::fill_in_stack_trace(exception); | |
749 } | |
750 throw_and_post_jvmti_exception(thread, exception); | |
751 JRT_END | |
752 | |
753 address SharedRuntime::continuation_for_implicit_exception(JavaThread* thread, | |
754 address pc, | |
755 SharedRuntime::ImplicitExceptionKind exception_kind) | |
756 { | |
757 address target_pc = NULL; | |
758 | |
759 if (Interpreter::contains(pc)) { | |
760 #ifdef CC_INTERP | |
761 // C++ interpreter doesn't throw implicit exceptions | |
762 ShouldNotReachHere(); | |
763 #else | |
764 switch (exception_kind) { | |
765 case IMPLICIT_NULL: return Interpreter::throw_NullPointerException_entry(); | |
766 case IMPLICIT_DIVIDE_BY_ZERO: return Interpreter::throw_ArithmeticException_entry(); | |
767 case STACK_OVERFLOW: return Interpreter::throw_StackOverflowError_entry(); | |
768 default: ShouldNotReachHere(); | |
769 } | |
770 #endif // !CC_INTERP | |
771 } else { | |
772 switch (exception_kind) { | |
773 case STACK_OVERFLOW: { | |
774 // Stack overflow only occurs upon frame setup; the callee is | |
775 // going to be unwound. Dispatch to a shared runtime stub | |
776 // which will cause the StackOverflowError to be fabricated | |
777 // and processed. | |
778 // For stack overflow in deoptimization blob, cleanup thread. | |
779 if (thread->deopt_mark() != NULL) { | |
780 Deoptimization::cleanup_deopt_info(thread, NULL); | |
781 } | |
4944 | 782 Events::log_exception(thread, "StackOverflowError at " INTPTR_FORMAT, pc); |
0 | 783 return StubRoutines::throw_StackOverflowError_entry(); |
784 } | |
785 | |
786 case IMPLICIT_NULL: { | |
787 if (VtableStubs::contains(pc)) { | |
788 // We haven't yet entered the callee frame. Fabricate an | |
789 // exception and begin dispatching it in the caller. Since | |
790 // the caller was at a call site, it's safe to destroy all | |
791 // caller-saved registers, as these entry points do. | |
792 VtableStub* vt_stub = VtableStubs::stub_containing(pc); | |
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793 |
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794 // If vt_stub is NULL, then return NULL to signal handler to report the SEGV error. |
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795 if (vt_stub == NULL) return NULL; |
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796 |
0 | 797 if (vt_stub->is_abstract_method_error(pc)) { |
798 assert(!vt_stub->is_vtable_stub(), "should never see AbstractMethodErrors from vtable-type VtableStubs"); | |
4944 | 799 Events::log_exception(thread, "AbstractMethodError at " INTPTR_FORMAT, pc); |
0 | 800 return StubRoutines::throw_AbstractMethodError_entry(); |
801 } else { | |
4944 | 802 Events::log_exception(thread, "NullPointerException at vtable entry " INTPTR_FORMAT, pc); |
0 | 803 return StubRoutines::throw_NullPointerException_at_call_entry(); |
804 } | |
805 } else { | |
806 CodeBlob* cb = CodeCache::find_blob(pc); | |
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807 |
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808 // If code blob is NULL, then return NULL to signal handler to report the SEGV error. |
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809 if (cb == NULL) return NULL; |
0 | 810 |
811 // Exception happened in CodeCache. Must be either: | |
812 // 1. Inline-cache check in C2I handler blob, | |
813 // 2. Inline-cache check in nmethod, or | |
14309 | 814 // 3. Implicit null exception in nmethod |
0 | 815 |
816 if (!cb->is_nmethod()) { | |
11029 | 817 bool is_in_blob = cb->is_adapter_blob() || cb->is_method_handles_adapter_blob(); |
818 if (!is_in_blob) { | |
819 cb->print(); | |
820 fatal(err_msg("exception happened outside interpreter, nmethods and vtable stubs at pc " INTPTR_FORMAT, pc)); | |
821 } | |
4944 | 822 Events::log_exception(thread, "NullPointerException in code blob at " INTPTR_FORMAT, pc); |
0 | 823 // There is no handler here, so we will simply unwind. |
824 return StubRoutines::throw_NullPointerException_at_call_entry(); | |
825 } | |
826 | |
827 // Otherwise, it's an nmethod. Consult its exception handlers. | |
828 nmethod* nm = (nmethod*)cb; | |
829 if (nm->inlinecache_check_contains(pc)) { | |
830 // exception happened inside inline-cache check code | |
831 // => the nmethod is not yet active (i.e., the frame | |
832 // is not set up yet) => use return address pushed by | |
833 // caller => don't push another return address | |
4944 | 834 Events::log_exception(thread, "NullPointerException in IC check " INTPTR_FORMAT, pc); |
0 | 835 return StubRoutines::throw_NullPointerException_at_call_entry(); |
836 } | |
837 | |
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838 if (nm->method()->is_method_handle_intrinsic()) { |
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839 // exception happened inside MH dispatch code, similar to a vtable stub |
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840 Events::log_exception(thread, "NullPointerException in MH adapter " INTPTR_FORMAT, pc); |
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841 return StubRoutines::throw_NullPointerException_at_call_entry(); |
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842 } |
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843 |
0 | 844 #ifndef PRODUCT |
845 _implicit_null_throws++; | |
846 #endif | |
847 target_pc = nm->continuation_for_implicit_exception(pc); | |
1250 | 848 // If there's an unexpected fault, target_pc might be NULL, |
849 // in which case we want to fall through into the normal | |
850 // error handling code. | |
0 | 851 } |
852 | |
853 break; // fall through | |
854 } | |
855 | |
856 | |
857 case IMPLICIT_DIVIDE_BY_ZERO: { | |
858 nmethod* nm = CodeCache::find_nmethod(pc); | |
859 guarantee(nm != NULL, "must have containing nmethod for implicit division-by-zero exceptions"); | |
860 #ifndef PRODUCT | |
861 _implicit_div0_throws++; | |
862 #endif | |
863 target_pc = nm->continuation_for_implicit_exception(pc); | |
1250 | 864 // If there's an unexpected fault, target_pc might be NULL, |
865 // in which case we want to fall through into the normal | |
866 // error handling code. | |
0 | 867 break; // fall through |
868 } | |
869 | |
870 default: ShouldNotReachHere(); | |
871 } | |
872 | |
873 assert(exception_kind == IMPLICIT_NULL || exception_kind == IMPLICIT_DIVIDE_BY_ZERO, "wrong implicit exception kind"); | |
874 | |
875 // for AbortVMOnException flag | |
876 NOT_PRODUCT(Exceptions::debug_check_abort("java.lang.NullPointerException")); | |
877 if (exception_kind == IMPLICIT_NULL) { | |
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878 Events::log_exception(thread, "Implicit null exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 879 } else { |
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880 Events::log_exception(thread, "Implicit division by zero exception at " INTPTR_FORMAT " to " INTPTR_FORMAT, pc, target_pc); |
0 | 881 } |
882 return target_pc; | |
883 } | |
884 | |
885 ShouldNotReachHere(); | |
886 return NULL; | |
887 } | |
888 | |
889 | |
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890 /** |
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891 * Throws an java/lang/UnsatisfiedLinkError. The address of this method is |
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892 * installed in the native function entry of all native Java methods before |
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893 * they get linked to their actual native methods. |
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894 * |
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895 * \note |
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896 * This method actually never gets called! The reason is because |
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897 * the interpreter's native entries call NativeLookup::lookup() which |
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898 * throws the exception when the lookup fails. The exception is then |
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899 * caught and forwarded on the return from NativeLookup::lookup() call |
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900 * before the call to the native function. This might change in the future. |
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901 */ |
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902 JNI_ENTRY(void*, throw_unsatisfied_link_error(JNIEnv* env, ...)) |
0 | 903 { |
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904 // We return a bad value here to make sure that the exception is |
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905 // forwarded before we look at the return value. |
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906 THROW_(vmSymbols::java_lang_UnsatisfiedLinkError(), (void*)badJNIHandle); |
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907 } |
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908 JNI_END |
0 | 909 |
910 address SharedRuntime::native_method_throw_unsatisfied_link_error_entry() { | |
911 return CAST_FROM_FN_PTR(address, &throw_unsatisfied_link_error); | |
912 } | |
913 | |
914 | |
915 #ifndef PRODUCT | |
916 JRT_ENTRY(intptr_t, SharedRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) | |
917 const frame f = thread->last_frame(); | |
918 assert(f.is_interpreted_frame(), "must be an interpreted frame"); | |
919 #ifndef PRODUCT | |
920 methodHandle mh(THREAD, f.interpreter_frame_method()); | |
921 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); | |
922 #endif // !PRODUCT | |
923 return preserve_this_value; | |
924 JRT_END | |
925 #endif // !PRODUCT | |
926 | |
927 | |
928 JRT_ENTRY(void, SharedRuntime::yield_all(JavaThread* thread, int attempts)) | |
929 os::yield_all(attempts); | |
930 JRT_END | |
931 | |
932 | |
933 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
934 assert(obj->is_oop(), "must be a valid oop"); | |
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935 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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936 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
0 | 937 JRT_END |
938 | |
939 | |
940 jlong SharedRuntime::get_java_tid(Thread* thread) { | |
941 if (thread != NULL) { | |
942 if (thread->is_Java_thread()) { | |
943 oop obj = ((JavaThread*)thread)->threadObj(); | |
944 return (obj == NULL) ? 0 : java_lang_Thread::thread_id(obj); | |
945 } | |
946 } | |
947 return 0; | |
948 } | |
949 | |
950 /** | |
951 * This function ought to be a void function, but cannot be because | |
952 * it gets turned into a tail-call on sparc, which runs into dtrace bug | |
953 * 6254741. Once that is fixed we can remove the dummy return value. | |
954 */ | |
955 int SharedRuntime::dtrace_object_alloc(oopDesc* o) { | |
956 return dtrace_object_alloc_base(Thread::current(), o); | |
957 } | |
958 | |
959 int SharedRuntime::dtrace_object_alloc_base(Thread* thread, oopDesc* o) { | |
960 assert(DTraceAllocProbes, "wrong call"); | |
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961 Klass* klass = o->klass(); |
0 | 962 int size = o->size(); |
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963 Symbol* name = klass->name(); |
4006 | 964 HOTSPOT_OBJECT_ALLOC( |
965 get_java_tid(thread), | |
966 (char *) name->bytes(), name->utf8_length(), size * HeapWordSize); | |
0 | 967 return 0; |
968 } | |
969 | |
970 JRT_LEAF(int, SharedRuntime::dtrace_method_entry( | |
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971 JavaThread* thread, Method* method)) |
0 | 972 assert(DTraceMethodProbes, "wrong call"); |
2177
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973 Symbol* kname = method->klass_name(); |
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974 Symbol* name = method->name(); |
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975 Symbol* sig = method->signature(); |
4006 | 976 HOTSPOT_METHOD_ENTRY( |
977 get_java_tid(thread), | |
978 (char *) kname->bytes(), kname->utf8_length(), | |
979 (char *) name->bytes(), name->utf8_length(), | |
980 (char *) sig->bytes(), sig->utf8_length()); | |
0 | 981 return 0; |
982 JRT_END | |
983 | |
984 JRT_LEAF(int, SharedRuntime::dtrace_method_exit( | |
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985 JavaThread* thread, Method* method)) |
0 | 986 assert(DTraceMethodProbes, "wrong call"); |
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987 Symbol* kname = method->klass_name(); |
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988 Symbol* name = method->name(); |
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989 Symbol* sig = method->signature(); |
4006 | 990 HOTSPOT_METHOD_RETURN( |
991 get_java_tid(thread), | |
992 (char *) kname->bytes(), kname->utf8_length(), | |
993 (char *) name->bytes(), name->utf8_length(), | |
994 (char *) sig->bytes(), sig->utf8_length()); | |
0 | 995 return 0; |
996 JRT_END | |
997 | |
998 | |
999 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode) | |
1000 // for a call current in progress, i.e., arguments has been pushed on stack | |
1001 // put callee has not been invoked yet. Used by: resolve virtual/static, | |
1002 // vtable updates, etc. Caller frame must be compiled. | |
1003 Handle SharedRuntime::find_callee_info(JavaThread* thread, Bytecodes::Code& bc, CallInfo& callinfo, TRAPS) { | |
1004 ResourceMark rm(THREAD); | |
1005 | |
1006 // last java frame on stack (which includes native call frames) | |
1007 vframeStream vfst(thread, true); // Do not skip and javaCalls | |
1008 | |
1009 return find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(Handle())); | |
1010 } | |
1011 | |
1012 | |
1013 // Finds receiver, CallInfo (i.e. receiver method), and calling bytecode | |
1014 // for a call current in progress, i.e., arguments has been pushed on stack | |
1015 // but callee has not been invoked yet. Caller frame must be compiled. | |
1016 Handle SharedRuntime::find_callee_info_helper(JavaThread* thread, | |
1017 vframeStream& vfst, | |
1018 Bytecodes::Code& bc, | |
1019 CallInfo& callinfo, TRAPS) { | |
1020 Handle receiver; | |
1021 Handle nullHandle; //create a handy null handle for exception returns | |
1022 | |
1023 assert(!vfst.at_end(), "Java frame must exist"); | |
1024 | |
1025 // Find caller and bci from vframe | |
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1026 methodHandle caller(THREAD, vfst.method()); |
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1027 int bci = vfst.bci(); |
0 | 1028 |
1029 // Find bytecode | |
2142 | 1030 Bytecode_invoke bytecode(caller, bci); |
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1031 bc = bytecode.invoke_code(); |
2142 | 1032 int bytecode_index = bytecode.index(); |
0 | 1033 |
1034 // Find receiver for non-static call | |
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1035 if (bc != Bytecodes::_invokestatic && |
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1036 bc != Bytecodes::_invokedynamic && |
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1037 bc != Bytecodes::_invokehandle) { |
0 | 1038 // This register map must be update since we need to find the receiver for |
1039 // compiled frames. The receiver might be in a register. | |
1040 RegisterMap reg_map2(thread); | |
1041 frame stubFrame = thread->last_frame(); | |
1042 // Caller-frame is a compiled frame | |
1043 frame callerFrame = stubFrame.sender(®_map2); | |
1044 | |
2142 | 1045 methodHandle callee = bytecode.static_target(CHECK_(nullHandle)); |
0 | 1046 if (callee.is_null()) { |
1047 THROW_(vmSymbols::java_lang_NoSuchMethodException(), nullHandle); | |
1048 } | |
1049 // Retrieve from a compiled argument list | |
1050 receiver = Handle(THREAD, callerFrame.retrieve_receiver(®_map2)); | |
1051 | |
1052 if (receiver.is_null()) { | |
1053 THROW_(vmSymbols::java_lang_NullPointerException(), nullHandle); | |
1054 } | |
1055 } | |
1056 | |
1057 // Resolve method. This is parameterized by bytecode. | |
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1058 constantPoolHandle constants(THREAD, caller->constants()); |
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1059 assert(receiver.is_null() || receiver->is_oop(), "wrong receiver"); |
0 | 1060 LinkResolver::resolve_invoke(callinfo, receiver, constants, bytecode_index, bc, CHECK_(nullHandle)); |
1061 | |
1062 #ifdef ASSERT | |
1063 // Check that the receiver klass is of the right subtype and that it is initialized for virtual calls | |
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1064 if (bc != Bytecodes::_invokestatic && bc != Bytecodes::_invokedynamic && bc != Bytecodes::_invokehandle) { |
0 | 1065 assert(receiver.not_null(), "should have thrown exception"); |
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1066 KlassHandle receiver_klass(THREAD, receiver->klass()); |
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1067 Klass* rk = constants->klass_ref_at(bytecode_index, CHECK_(nullHandle)); |
0 | 1068 // klass is already loaded |
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1069 KlassHandle static_receiver_klass(THREAD, rk); |
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1070 // Method handle invokes might have been optimized to a direct call |
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1071 // so don't check for the receiver class. |
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1072 // FIXME this weakens the assert too much |
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1073 methodHandle callee = callinfo.selected_method(); |
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1074 assert(receiver_klass->is_subtype_of(static_receiver_klass()) || |
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1075 callee->is_method_handle_intrinsic() || |
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1076 callee->is_compiled_lambda_form(), |
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1077 "actual receiver must be subclass of static receiver klass"); |
0 | 1078 if (receiver_klass->oop_is_instance()) { |
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1079 if (InstanceKlass::cast(receiver_klass())->is_not_initialized()) { |
0 | 1080 tty->print_cr("ERROR: Klass not yet initialized!!"); |
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1081 receiver_klass()->print(); |
0 | 1082 } |
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1083 assert(!InstanceKlass::cast(receiver_klass())->is_not_initialized(), "receiver_klass must be initialized"); |
0 | 1084 } |
1085 } | |
1086 #endif | |
1087 | |
1088 return receiver; | |
1089 } | |
1090 | |
1091 methodHandle SharedRuntime::find_callee_method(JavaThread* thread, TRAPS) { | |
1092 ResourceMark rm(THREAD); | |
1093 // We need first to check if any Java activations (compiled, interpreted) | |
1094 // exist on the stack since last JavaCall. If not, we need | |
1095 // to get the target method from the JavaCall wrapper. | |
1096 vframeStream vfst(thread, true); // Do not skip any javaCalls | |
1097 methodHandle callee_method; | |
1098 if (vfst.at_end()) { | |
1099 // No Java frames were found on stack since we did the JavaCall. | |
1100 // Hence the stack can only contain an entry_frame. We need to | |
1101 // find the target method from the stub frame. | |
1102 RegisterMap reg_map(thread, false); | |
1103 frame fr = thread->last_frame(); | |
1104 assert(fr.is_runtime_frame(), "must be a runtimeStub"); | |
1105 fr = fr.sender(®_map); | |
1106 assert(fr.is_entry_frame(), "must be"); | |
1107 // fr is now pointing to the entry frame. | |
1108 callee_method = methodHandle(THREAD, fr.entry_frame_call_wrapper()->callee_method()); | |
1109 assert(fr.entry_frame_call_wrapper()->receiver() == NULL || !callee_method->is_static(), "non-null receiver for static call??"); | |
1110 } else { | |
1111 Bytecodes::Code bc; | |
1112 CallInfo callinfo; | |
1113 find_callee_info_helper(thread, vfst, bc, callinfo, CHECK_(methodHandle())); | |
1114 callee_method = callinfo.selected_method(); | |
1115 } | |
1116 assert(callee_method()->is_method(), "must be"); | |
1117 return callee_method; | |
1118 } | |
1119 | |
1120 // Resolves a call. | |
1121 methodHandle SharedRuntime::resolve_helper(JavaThread *thread, | |
1122 bool is_virtual, | |
1123 bool is_optimized, TRAPS) { | |
1124 methodHandle callee_method; | |
1125 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1126 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { | |
1127 int retry_count = 0; | |
1128 while (!HAS_PENDING_EXCEPTION && callee_method->is_old() && | |
1142 | 1129 callee_method->method_holder() != SystemDictionary::Object_klass()) { |
0 | 1130 // If has a pending exception then there is no need to re-try to |
1131 // resolve this method. | |
1132 // If the method has been redefined, we need to try again. | |
1133 // Hack: we have no way to update the vtables of arrays, so don't | |
1134 // require that java.lang.Object has been updated. | |
1135 | |
1136 // It is very unlikely that method is redefined more than 100 times | |
1137 // in the middle of resolve. If it is looping here more than 100 times | |
1138 // means then there could be a bug here. | |
1139 guarantee((retry_count++ < 100), | |
1140 "Could not resolve to latest version of redefined method"); | |
1141 // method is redefined in the middle of resolve so re-try. | |
1142 callee_method = resolve_sub_helper(thread, is_virtual, is_optimized, THREAD); | |
1143 } | |
1144 } | |
1145 return callee_method; | |
1146 } | |
1147 | |
1148 // Resolves a call. The compilers generate code for calls that go here | |
1149 // and are patched with the real destination of the call. | |
1150 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread, | |
1151 bool is_virtual, | |
1152 bool is_optimized, TRAPS) { | |
1153 | |
1154 ResourceMark rm(thread); | |
1155 RegisterMap cbl_map(thread, false); | |
1156 frame caller_frame = thread->last_frame().sender(&cbl_map); | |
1157 | |
1295 | 1158 CodeBlob* caller_cb = caller_frame.cb(); |
1159 guarantee(caller_cb != NULL && caller_cb->is_nmethod(), "must be called from nmethod"); | |
1160 nmethod* caller_nm = caller_cb->as_nmethod_or_null(); | |
14212 | 1161 |
0 | 1162 // make sure caller is not getting deoptimized |
1163 // and removed before we are done with it. | |
1164 // CLEANUP - with lazy deopt shouldn't need this lock | |
1295 | 1165 nmethodLocker caller_lock(caller_nm); |
0 | 1166 |
1167 // determine call info & receiver | |
1168 // note: a) receiver is NULL for static calls | |
1169 // b) an exception is thrown if receiver is NULL for non-static calls | |
1170 CallInfo call_info; | |
1171 Bytecodes::Code invoke_code = Bytecodes::_illegal; | |
1172 Handle receiver = find_callee_info(thread, invoke_code, | |
1173 call_info, CHECK_(methodHandle())); | |
1174 methodHandle callee_method = call_info.selected_method(); | |
1175 | |
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1176 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) || |
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1177 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) || |
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1178 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) || |
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1179 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode"); |
0 | 1180 |
14212 | 1181 // We do not patch the call site if the caller nmethod has been made non-entrant. |
1182 if (!caller_nm->is_in_use()) { | |
1183 return callee_method; | |
1184 } | |
1185 | |
0 | 1186 #ifndef PRODUCT |
1187 // tracing/debugging/statistics | |
1188 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) : | |
1189 (is_virtual) ? (&_resolve_virtual_ctr) : | |
1190 (&_resolve_static_ctr); | |
1191 Atomic::inc(addr); | |
1192 | |
1193 if (TraceCallFixup) { | |
1194 ResourceMark rm(thread); | |
1195 tty->print("resolving %s%s (%s) call to", | |
1196 (is_optimized) ? "optimized " : "", (is_virtual) ? "virtual" : "static", | |
1197 Bytecodes::name(invoke_code)); | |
1198 callee_method->print_short_name(tty); | |
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1199 tty->print_cr(" at pc: " INTPTR_FORMAT " to code: " INTPTR_FORMAT, caller_frame.pc(), callee_method->code()); |
0 | 1200 } |
1201 #endif | |
1202 | |
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1203 // JSR 292 key invariant: |
1295 | 1204 // If the resolved method is a MethodHandle invoke target the call |
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1205 // site must be a MethodHandle call site, because the lambda form might tail-call |
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1206 // leaving the stack in a state unknown to either caller or callee |
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1207 // TODO detune for now but we might need it again |
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1208 // assert(!callee_method->is_compiled_lambda_form() || |
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1209 // caller_nm->is_method_handle_return(caller_frame.pc()), "must be MH call site"); |
1295 | 1210 |
0 | 1211 // Compute entry points. This might require generation of C2I converter |
1212 // frames, so we cannot be holding any locks here. Furthermore, the | |
1213 // computation of the entry points is independent of patching the call. We | |
1214 // always return the entry-point, but we only patch the stub if the call has | |
1215 // not been deoptimized. Return values: For a virtual call this is an | |
1216 // (cached_oop, destination address) pair. For a static call/optimized | |
1217 // virtual this is just a destination address. | |
1218 | |
1219 StaticCallInfo static_call_info; | |
1220 CompiledICInfo virtual_call_info; | |
1221 | |
1222 // Make sure the callee nmethod does not get deoptimized and removed before | |
1223 // we are done patching the code. | |
1295 | 1224 nmethod* callee_nm = callee_method->code(); |
14212 | 1225 if (callee_nm != NULL && !callee_nm->is_in_use()) { |
1226 // Patch call site to C2I adapter if callee nmethod is deoptimized or unloaded. | |
1227 callee_nm = NULL; | |
1228 } | |
1295 | 1229 nmethodLocker nl_callee(callee_nm); |
0 | 1230 #ifdef ASSERT |
1295 | 1231 address dest_entry_point = callee_nm == NULL ? 0 : callee_nm->entry_point(); // used below |
0 | 1232 #endif |
1233 | |
1234 if (is_virtual) { | |
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1235 assert(receiver.not_null() || invoke_code == Bytecodes::_invokehandle, "sanity check"); |
0 | 1236 bool static_bound = call_info.resolved_method()->can_be_statically_bound(); |
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1237 KlassHandle h_klass(THREAD, invoke_code == Bytecodes::_invokehandle ? NULL : receiver->klass()); |
0 | 1238 CompiledIC::compute_monomorphic_entry(callee_method, h_klass, |
1239 is_optimized, static_bound, virtual_call_info, | |
1240 CHECK_(methodHandle())); | |
1241 } else { | |
1242 // static call | |
1243 CompiledStaticCall::compute_entry(callee_method, static_call_info); | |
1244 } | |
1245 | |
1246 // grab lock, check for deoptimization and potentially patch caller | |
1247 { | |
1248 MutexLocker ml_patch(CompiledIC_lock); | |
1249 | |
14212 | 1250 // Lock blocks for safepoint during which both nmethods can change state. |
1251 | |
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1252 // Now that we are ready to patch if the Method* was redefined then |
0 | 1253 // don't update call site and let the caller retry. |
14212 | 1254 // Don't update call site if caller nmethod has been made non-entrant |
1255 // as it is a waste of time. | |
1256 // Don't update call site if callee nmethod was unloaded or deoptimized. | |
1257 // Don't update call site if callee nmethod was replaced by an other nmethod | |
1258 // which may happen when multiply alive nmethod (tiered compilation) | |
1259 // will be supported. | |
1260 if (!callee_method->is_old() && caller_nm->is_in_use() && | |
1261 (callee_nm == NULL || callee_nm->is_in_use() && (callee_method->code() == callee_nm))) { | |
0 | 1262 #ifdef ASSERT |
1263 // We must not try to patch to jump to an already unloaded method. | |
1264 if (dest_entry_point != 0) { | |
14212 | 1265 CodeBlob* cb = CodeCache::find_blob(dest_entry_point); |
1266 assert((cb != NULL) && cb->is_nmethod() && (((nmethod*)cb) == callee_nm), | |
1267 "should not call unloaded nmethod"); | |
0 | 1268 } |
1269 #endif | |
1270 if (is_virtual) { | |
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1271 nmethod* nm = callee_nm; |
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1272 if (nm == NULL) CodeCache::find_blob(caller_frame.pc()); |
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1273 CompiledIC* inline_cache = CompiledIC_before(caller_nm, caller_frame.pc()); |
0 | 1274 if (inline_cache->is_clean()) { |
1275 inline_cache->set_to_monomorphic(virtual_call_info); | |
1276 } | |
1277 } else { | |
1278 CompiledStaticCall* ssc = compiledStaticCall_before(caller_frame.pc()); | |
1279 if (ssc->is_clean()) ssc->set(static_call_info); | |
1280 } | |
1281 } | |
1282 | |
1283 } // unlock CompiledIC_lock | |
1284 | |
1285 return callee_method; | |
1286 } | |
1287 | |
1288 | |
1289 // Inline caches exist only in compiled code | |
1290 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_ic_miss(JavaThread* thread)) | |
1291 #ifdef ASSERT | |
1292 RegisterMap reg_map(thread, false); | |
1293 frame stub_frame = thread->last_frame(); | |
1294 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1295 frame caller_frame = stub_frame.sender(®_map); | |
1296 assert(!caller_frame.is_interpreted_frame() && !caller_frame.is_entry_frame(), "unexpected frame"); | |
1297 #endif /* ASSERT */ | |
1298 | |
1299 methodHandle callee_method; | |
1300 JRT_BLOCK | |
1301 callee_method = SharedRuntime::handle_ic_miss_helper(thread, CHECK_NULL); | |
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1302 // Return Method* through TLS |
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1303 thread->set_vm_result_2(callee_method()); |
0 | 1304 JRT_BLOCK_END |
1305 // return compiled code entry point after potential safepoints | |
1306 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1307 return callee_method->verified_code_entry(); | |
1308 JRT_END | |
1309 | |
1310 | |
1311 // Handle call site that has been made non-entrant | |
1312 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method(JavaThread* thread)) | |
1313 // 6243940 We might end up in here if the callee is deoptimized | |
1314 // as we race to call it. We don't want to take a safepoint if | |
1315 // the caller was interpreted because the caller frame will look | |
1316 // interpreted to the stack walkers and arguments are now | |
1317 // "compiled" so it is much better to make this transition | |
1318 // invisible to the stack walking code. The i2c path will | |
1319 // place the callee method in the callee_target. It is stashed | |
1320 // there because if we try and find the callee by normal means a | |
1321 // safepoint is possible and have trouble gc'ing the compiled args. | |
1322 RegisterMap reg_map(thread, false); | |
1323 frame stub_frame = thread->last_frame(); | |
1324 assert(stub_frame.is_runtime_frame(), "sanity check"); | |
1325 frame caller_frame = stub_frame.sender(®_map); | |
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1326 |
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1327 if (caller_frame.is_interpreted_frame() || |
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1328 caller_frame.is_entry_frame()) { |
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1329 Method* callee = thread->callee_target(); |
0 | 1330 guarantee(callee != NULL && callee->is_method(), "bad handshake"); |
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1331 thread->set_vm_result_2(callee); |
0 | 1332 thread->set_callee_target(NULL); |
1333 return callee->get_c2i_entry(); | |
1334 } | |
1335 | |
1336 // Must be compiled to compiled path which is safe to stackwalk | |
1337 methodHandle callee_method; | |
1338 JRT_BLOCK | |
1339 // Force resolving of caller (if we called from compiled frame) | |
1340 callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_NULL); | |
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1341 thread->set_vm_result_2(callee_method()); |
0 | 1342 JRT_BLOCK_END |
1343 // return compiled code entry point after potential safepoints | |
1344 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1345 return callee_method->verified_code_entry(); | |
1346 JRT_END | |
1347 | |
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1348 // Handle abstract method call |
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1349 JRT_BLOCK_ENTRY(address, SharedRuntime::handle_wrong_method_abstract(JavaThread* thread)) |
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1350 return StubRoutines::throw_AbstractMethodError_entry(); |
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1351 JRT_END |
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1352 |
0 | 1353 |
1354 // resolve a static call and patch code | |
1355 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_static_call_C(JavaThread *thread )) | |
1356 methodHandle callee_method; | |
1357 JRT_BLOCK | |
1358 callee_method = SharedRuntime::resolve_helper(thread, false, false, CHECK_NULL); | |
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1359 thread->set_vm_result_2(callee_method()); |
0 | 1360 JRT_BLOCK_END |
1361 // return compiled code entry point after potential safepoints | |
1362 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1363 return callee_method->verified_code_entry(); | |
1364 JRT_END | |
1365 | |
1366 | |
1367 // resolve virtual call and update inline cache to monomorphic | |
1368 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_virtual_call_C(JavaThread *thread )) | |
1369 methodHandle callee_method; | |
1370 JRT_BLOCK | |
1371 callee_method = SharedRuntime::resolve_helper(thread, true, false, CHECK_NULL); | |
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1372 thread->set_vm_result_2(callee_method()); |
0 | 1373 JRT_BLOCK_END |
1374 // return compiled code entry point after potential safepoints | |
1375 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1376 return callee_method->verified_code_entry(); | |
1377 JRT_END | |
1378 | |
1379 | |
1380 // Resolve a virtual call that can be statically bound (e.g., always | |
1381 // monomorphic, so it has no inline cache). Patch code to resolved target. | |
1382 JRT_BLOCK_ENTRY(address, SharedRuntime::resolve_opt_virtual_call_C(JavaThread *thread)) | |
1383 methodHandle callee_method; | |
1384 JRT_BLOCK | |
1385 callee_method = SharedRuntime::resolve_helper(thread, true, true, CHECK_NULL); | |
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1386 thread->set_vm_result_2(callee_method()); |
0 | 1387 JRT_BLOCK_END |
1388 // return compiled code entry point after potential safepoints | |
1389 assert(callee_method->verified_code_entry() != NULL, " Jump to zero!"); | |
1390 return callee_method->verified_code_entry(); | |
1391 JRT_END | |
1392 | |
1393 | |
1394 | |
1395 | |
1396 | |
1397 methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) { | |
1398 ResourceMark rm(thread); | |
1399 CallInfo call_info; | |
1400 Bytecodes::Code bc; | |
1401 | |
1402 // receiver is NULL for static calls. An exception is thrown for NULL | |
1403 // receivers for non-static calls | |
1404 Handle receiver = find_callee_info(thread, bc, call_info, | |
1405 CHECK_(methodHandle())); | |
1406 // Compiler1 can produce virtual call sites that can actually be statically bound | |
1407 // If we fell thru to below we would think that the site was going megamorphic | |
1408 // when in fact the site can never miss. Worse because we'd think it was megamorphic | |
1409 // we'd try and do a vtable dispatch however methods that can be statically bound | |
1410 // don't have vtable entries (vtable_index < 0) and we'd blow up. So we force a | |
1411 // reresolution of the call site (as if we did a handle_wrong_method and not an | |
1412 // plain ic_miss) and the site will be converted to an optimized virtual call site | |
1413 // never to miss again. I don't believe C2 will produce code like this but if it | |
1414 // did this would still be the correct thing to do for it too, hence no ifdef. | |
1415 // | |
1416 if (call_info.resolved_method()->can_be_statically_bound()) { | |
1417 methodHandle callee_method = SharedRuntime::reresolve_call_site(thread, CHECK_(methodHandle())); | |
1418 if (TraceCallFixup) { | |
1419 RegisterMap reg_map(thread, false); | |
1420 frame caller_frame = thread->last_frame().sender(®_map); | |
1421 ResourceMark rm(thread); | |
1422 tty->print("converting IC miss to reresolve (%s) call to", Bytecodes::name(bc)); | |
1423 callee_method->print_short_name(tty); | |
1424 tty->print_cr(" from pc: " INTPTR_FORMAT, caller_frame.pc()); | |
1425 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1426 } | |
1427 return callee_method; | |
1428 } | |
1429 | |
1430 methodHandle callee_method = call_info.selected_method(); | |
1431 | |
1432 bool should_be_mono = false; | |
1433 | |
1434 #ifndef PRODUCT | |
1435 Atomic::inc(&_ic_miss_ctr); | |
1436 | |
1437 // Statistics & Tracing | |
1438 if (TraceCallFixup) { | |
1439 ResourceMark rm(thread); | |
1440 tty->print("IC miss (%s) call to", Bytecodes::name(bc)); | |
1441 callee_method->print_short_name(tty); | |
1442 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1443 } | |
1444 | |
1445 if (ICMissHistogram) { | |
1446 MutexLocker m(VMStatistic_lock); | |
1447 RegisterMap reg_map(thread, false); | |
1448 frame f = thread->last_frame().real_sender(®_map);// skip runtime stub | |
1449 // produce statistics under the lock | |
1450 trace_ic_miss(f.pc()); | |
1451 } | |
1452 #endif | |
1453 | |
1454 // install an event collector so that when a vtable stub is created the | |
1455 // profiler can be notified via a DYNAMIC_CODE_GENERATED event. The | |
1456 // event can't be posted when the stub is created as locks are held | |
1457 // - instead the event will be deferred until the event collector goes | |
1458 // out of scope. | |
1459 JvmtiDynamicCodeEventCollector event_collector; | |
1460 | |
1461 // Update inline cache to megamorphic. Skip update if caller has been | |
1462 // made non-entrant or we are called from interpreted. | |
1463 { MutexLocker ml_patch (CompiledIC_lock); | |
1464 RegisterMap reg_map(thread, false); | |
1465 frame caller_frame = thread->last_frame().sender(®_map); | |
1466 CodeBlob* cb = caller_frame.cb(); | |
1467 if (cb->is_nmethod() && ((nmethod*)cb)->is_in_use()) { | |
1468 // Not a non-entrant nmethod, so find inline_cache | |
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1469 CompiledIC* inline_cache = CompiledIC_before(((nmethod*)cb), caller_frame.pc()); |
0 | 1470 bool should_be_mono = false; |
1471 if (inline_cache->is_optimized()) { | |
1472 if (TraceCallFixup) { | |
1473 ResourceMark rm(thread); | |
1474 tty->print("OPTIMIZED IC miss (%s) call to", Bytecodes::name(bc)); | |
1475 callee_method->print_short_name(tty); | |
1476 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1477 } | |
1478 should_be_mono = true; | |
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1479 } else if (inline_cache->is_icholder_call()) { |
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1480 CompiledICHolder* ic_oop = inline_cache->cached_icholder(); |
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1481 if ( ic_oop != NULL) { |
0 | 1482 |
1483 if (receiver()->klass() == ic_oop->holder_klass()) { | |
1484 // This isn't a real miss. We must have seen that compiled code | |
1485 // is now available and we want the call site converted to a | |
1486 // monomorphic compiled call site. | |
1487 // We can't assert for callee_method->code() != NULL because it | |
1488 // could have been deoptimized in the meantime | |
1489 if (TraceCallFixup) { | |
1490 ResourceMark rm(thread); | |
1491 tty->print("FALSE IC miss (%s) converting to compiled call to", Bytecodes::name(bc)); | |
1492 callee_method->print_short_name(tty); | |
1493 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1494 } | |
1495 should_be_mono = true; | |
1496 } | |
1497 } | |
1498 } | |
1499 | |
1500 if (should_be_mono) { | |
1501 | |
1502 // We have a path that was monomorphic but was going interpreted | |
1503 // and now we have (or had) a compiled entry. We correct the IC | |
1504 // by using a new icBuffer. | |
1505 CompiledICInfo info; | |
1506 KlassHandle receiver_klass(THREAD, receiver()->klass()); | |
1507 inline_cache->compute_monomorphic_entry(callee_method, | |
1508 receiver_klass, | |
1509 inline_cache->is_optimized(), | |
1510 false, | |
1511 info, CHECK_(methodHandle())); | |
1512 inline_cache->set_to_monomorphic(info); | |
1513 } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) { | |
12294 | 1514 // Potential change to megamorphic |
1515 bool successful = inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle())); | |
1516 if (!successful) { | |
1517 inline_cache->set_to_clean(); | |
1518 } | |
0 | 1519 } else { |
1520 // Either clean or megamorphic | |
1521 } | |
1522 } | |
1523 } // Release CompiledIC_lock | |
1524 | |
1525 return callee_method; | |
1526 } | |
1527 | |
1528 // | |
1529 // Resets a call-site in compiled code so it will get resolved again. | |
1530 // This routines handles both virtual call sites, optimized virtual call | |
1531 // sites, and static call sites. Typically used to change a call sites | |
1532 // destination from compiled to interpreted. | |
1533 // | |
1534 methodHandle SharedRuntime::reresolve_call_site(JavaThread *thread, TRAPS) { | |
1535 ResourceMark rm(thread); | |
1536 RegisterMap reg_map(thread, false); | |
1537 frame stub_frame = thread->last_frame(); | |
1538 assert(stub_frame.is_runtime_frame(), "must be a runtimeStub"); | |
1539 frame caller = stub_frame.sender(®_map); | |
1540 | |
1541 // Do nothing if the frame isn't a live compiled frame. | |
1542 // nmethod could be deoptimized by the time we get here | |
1543 // so no update to the caller is needed. | |
1544 | |
1545 if (caller.is_compiled_frame() && !caller.is_deoptimized_frame()) { | |
1546 | |
1547 address pc = caller.pc(); | |
1548 | |
1549 // Default call_addr is the location of the "basic" call. | |
1550 // Determine the address of the call we a reresolving. With | |
1551 // Inline Caches we will always find a recognizable call. | |
1552 // With Inline Caches disabled we may or may not find a | |
1553 // recognizable call. We will always find a call for static | |
1554 // calls and for optimized virtual calls. For vanilla virtual | |
1555 // calls it depends on the state of the UseInlineCaches switch. | |
1556 // | |
1557 // With Inline Caches disabled we can get here for a virtual call | |
1558 // for two reasons: | |
1559 // 1 - calling an abstract method. The vtable for abstract methods | |
1560 // will run us thru handle_wrong_method and we will eventually | |
1561 // end up in the interpreter to throw the ame. | |
1562 // 2 - a racing deoptimization. We could be doing a vanilla vtable | |
1563 // call and between the time we fetch the entry address and | |
1564 // we jump to it the target gets deoptimized. Similar to 1 | |
1565 // we will wind up in the interprter (thru a c2i with c2). | |
1566 // | |
1567 address call_addr = NULL; | |
1568 { | |
1569 // Get call instruction under lock because another thread may be | |
1570 // busy patching it. | |
1571 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
1572 // Location of call instruction | |
1573 if (NativeCall::is_call_before(pc)) { | |
1574 NativeCall *ncall = nativeCall_before(pc); | |
1575 call_addr = ncall->instruction_address(); | |
1576 } | |
1577 } | |
1578 | |
1579 // Check for static or virtual call | |
1580 bool is_static_call = false; | |
1581 nmethod* caller_nm = CodeCache::find_nmethod(pc); | |
1582 // Make sure nmethod doesn't get deoptimized and removed until | |
1583 // this is done with it. | |
1584 // CLEANUP - with lazy deopt shouldn't need this lock | |
1585 nmethodLocker nmlock(caller_nm); | |
1586 | |
1587 if (call_addr != NULL) { | |
1588 RelocIterator iter(caller_nm, call_addr, call_addr+1); | |
1589 int ret = iter.next(); // Get item | |
1590 if (ret) { | |
1591 assert(iter.addr() == call_addr, "must find call"); | |
1592 if (iter.type() == relocInfo::static_call_type) { | |
1593 is_static_call = true; | |
1594 } else { | |
1595 assert(iter.type() == relocInfo::virtual_call_type || | |
1596 iter.type() == relocInfo::opt_virtual_call_type | |
1597 , "unexpected relocInfo. type"); | |
1598 } | |
1599 } else { | |
1600 assert(!UseInlineCaches, "relocation info. must exist for this address"); | |
1601 } | |
1602 | |
1603 // Cleaning the inline cache will force a new resolve. This is more robust | |
1604 // than directly setting it to the new destination, since resolving of calls | |
1605 // is always done through the same code path. (experience shows that it | |
1606 // leads to very hard to track down bugs, if an inline cache gets updated | |
1607 // to a wrong method). It should not be performance critical, since the | |
1608 // resolve is only done once. | |
1609 | |
1610 MutexLocker ml(CompiledIC_lock); | |
1611 // | |
1612 // We do not patch the call site if the nmethod has been made non-entrant | |
1613 // as it is a waste of time | |
1614 // | |
1615 if (caller_nm->is_in_use()) { | |
1616 if (is_static_call) { | |
1617 CompiledStaticCall* ssc= compiledStaticCall_at(call_addr); | |
1618 ssc->set_to_clean(); | |
1619 } else { | |
1620 // compiled, dispatched call (which used to call an interpreted method) | |
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1621 CompiledIC* inline_cache = CompiledIC_at(caller_nm, call_addr); |
0 | 1622 inline_cache->set_to_clean(); |
1623 } | |
1624 } | |
1625 } | |
1626 | |
1627 } | |
1628 | |
1629 methodHandle callee_method = find_callee_method(thread, CHECK_(methodHandle())); | |
1630 | |
1631 | |
1632 #ifndef PRODUCT | |
1633 Atomic::inc(&_wrong_method_ctr); | |
1634 | |
1635 if (TraceCallFixup) { | |
1636 ResourceMark rm(thread); | |
1637 tty->print("handle_wrong_method reresolving call to"); | |
1638 callee_method->print_short_name(tty); | |
1639 tty->print_cr(" code: " INTPTR_FORMAT, callee_method->code()); | |
1640 } | |
1641 #endif | |
1642 | |
1643 return callee_method; | |
1644 } | |
1645 | |
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1646 #ifdef ASSERT |
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1647 void SharedRuntime::check_member_name_argument_is_last_argument(methodHandle method, |
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1648 const BasicType* sig_bt, |
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1649 const VMRegPair* regs) { |
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1650 ResourceMark rm; |
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1651 const int total_args_passed = method->size_of_parameters(); |
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1652 const VMRegPair* regs_with_member_name = regs; |
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1653 VMRegPair* regs_without_member_name = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed - 1); |
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1654 |
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1655 const int member_arg_pos = total_args_passed - 1; |
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1656 assert(member_arg_pos >= 0 && member_arg_pos < total_args_passed, "oob"); |
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1657 assert(sig_bt[member_arg_pos] == T_OBJECT, "dispatch argument must be an object"); |
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1658 |
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1659 const bool is_outgoing = method->is_method_handle_intrinsic(); |
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1660 int comp_args_on_stack = java_calling_convention(sig_bt, regs_without_member_name, total_args_passed - 1, is_outgoing); |
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1661 |
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1662 for (int i = 0; i < member_arg_pos; i++) { |
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1663 VMReg a = regs_with_member_name[i].first(); |
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1664 VMReg b = regs_without_member_name[i].first(); |
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1665 assert(a->value() == b->value(), err_msg_res("register allocation mismatch: a=%d, b=%d", a->value(), b->value())); |
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1666 } |
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1667 assert(regs_with_member_name[member_arg_pos].first()->is_valid(), "bad member arg"); |
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1668 } |
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1669 #endif |
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1670 |
0 | 1671 // --------------------------------------------------------------------------- |
1672 // We are calling the interpreter via a c2i. Normally this would mean that | |
1673 // we were called by a compiled method. However we could have lost a race | |
1674 // where we went int -> i2c -> c2i and so the caller could in fact be | |
1205 | 1675 // interpreted. If the caller is compiled we attempt to patch the caller |
0 | 1676 // so he no longer calls into the interpreter. |
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1677 IRT_LEAF(void, SharedRuntime::fixup_callers_callsite(Method* method, address caller_pc)) |
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1678 Method* moop(method); |
0 | 1679 |
1680 address entry_point = moop->from_compiled_entry(); | |
1681 | |
1682 // It's possible that deoptimization can occur at a call site which hasn't | |
1683 // been resolved yet, in which case this function will be called from | |
1684 // an nmethod that has been patched for deopt and we can ignore the | |
1685 // request for a fixup. | |
1686 // Also it is possible that we lost a race in that from_compiled_entry | |
1687 // is now back to the i2c in that case we don't need to patch and if | |
1688 // we did we'd leap into space because the callsite needs to use | |
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1689 // "to interpreter" stub in order to load up the Method*. Don't |
0 | 1690 // ask me how I know this... |
1691 | |
1692 CodeBlob* cb = CodeCache::find_blob(caller_pc); | |
1205 | 1693 if (!cb->is_nmethod() || entry_point == moop->get_c2i_entry()) { |
1694 return; | |
1695 } | |
1696 | |
1697 // The check above makes sure this is a nmethod. | |
1698 nmethod* nm = cb->as_nmethod_or_null(); | |
1699 assert(nm, "must be"); | |
1700 | |
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1701 // Get the return PC for the passed caller PC. |
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1702 address return_pc = caller_pc + frame::pc_return_offset; |
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1703 |
0 | 1704 // There is a benign race here. We could be attempting to patch to a compiled |
1705 // entry point at the same time the callee is being deoptimized. If that is | |
1706 // the case then entry_point may in fact point to a c2i and we'd patch the | |
1707 // call site with the same old data. clear_code will set code() to NULL | |
1708 // at the end of it. If we happen to see that NULL then we can skip trying | |
1709 // to patch. If we hit the window where the callee has a c2i in the | |
1710 // from_compiled_entry and the NULL isn't present yet then we lose the race | |
1711 // and patch the code with the same old data. Asi es la vida. | |
1712 | |
1713 if (moop->code() == NULL) return; | |
1714 | |
1205 | 1715 if (nm->is_in_use()) { |
0 | 1716 |
1717 // Expect to find a native call there (unless it was no-inline cache vtable dispatch) | |
1718 MutexLockerEx ml_patch(Patching_lock, Mutex::_no_safepoint_check_flag); | |
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1719 if (NativeCall::is_call_before(return_pc)) { |
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1720 NativeCall *call = nativeCall_before(return_pc); |
0 | 1721 // |
1722 // bug 6281185. We might get here after resolving a call site to a vanilla | |
1723 // virtual call. Because the resolvee uses the verified entry it may then | |
1724 // see compiled code and attempt to patch the site by calling us. This would | |
1725 // then incorrectly convert the call site to optimized and its downhill from | |
1726 // there. If you're lucky you'll get the assert in the bugid, if not you've | |
1727 // just made a call site that could be megamorphic into a monomorphic site | |
1728 // for the rest of its life! Just another racing bug in the life of | |
1729 // fixup_callers_callsite ... | |
1730 // | |
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1731 RelocIterator iter(nm, call->instruction_address(), call->next_instruction_address()); |
0 | 1732 iter.next(); |
1733 assert(iter.has_current(), "must have a reloc at java call site"); | |
1734 relocInfo::relocType typ = iter.reloc()->type(); | |
1735 if ( typ != relocInfo::static_call_type && | |
1736 typ != relocInfo::opt_virtual_call_type && | |
1737 typ != relocInfo::static_stub_type) { | |
1738 return; | |
1739 } | |
1740 address destination = call->destination(); | |
1741 if (destination != entry_point) { | |
1742 CodeBlob* callee = CodeCache::find_blob(destination); | |
1743 // callee == cb seems weird. It means calling interpreter thru stub. | |
1744 if (callee == cb || callee->is_adapter_blob()) { | |
1745 // static call or optimized virtual | |
1746 if (TraceCallFixup) { | |
1204 | 1747 tty->print("fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1748 moop->print_short_name(tty); |
1749 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1750 } | |
1751 call->set_destination_mt_safe(entry_point); | |
1752 } else { | |
1753 if (TraceCallFixup) { | |
1754 tty->print("failed to fixup callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); | |
1755 moop->print_short_name(tty); | |
1756 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1757 } | |
1758 // assert is too strong could also be resolve destinations. | |
1759 // assert(InlineCacheBuffer::contains(destination) || VtableStubs::contains(destination), "must be"); | |
1760 } | |
1761 } else { | |
1762 if (TraceCallFixup) { | |
1204 | 1763 tty->print("already patched callsite at " INTPTR_FORMAT " to compiled code for", caller_pc); |
0 | 1764 moop->print_short_name(tty); |
1765 tty->print_cr(" to " INTPTR_FORMAT, entry_point); | |
1766 } | |
1767 } | |
1768 } | |
1769 } | |
1770 IRT_END | |
1771 | |
1772 | |
1773 // same as JVM_Arraycopy, but called directly from compiled code | |
1774 JRT_ENTRY(void, SharedRuntime::slow_arraycopy_C(oopDesc* src, jint src_pos, | |
1775 oopDesc* dest, jint dest_pos, | |
1776 jint length, | |
1777 JavaThread* thread)) { | |
1778 #ifndef PRODUCT | |
1779 _slow_array_copy_ctr++; | |
1780 #endif | |
1781 // Check if we have null pointers | |
1782 if (src == NULL || dest == NULL) { | |
1783 THROW(vmSymbols::java_lang_NullPointerException()); | |
1784 } | |
1785 // Do the copy. The casts to arrayOop are necessary to the copy_array API, | |
1786 // even though the copy_array API also performs dynamic checks to ensure | |
1787 // that src and dest are truly arrays (and are conformable). | |
1788 // The copy_array mechanism is awkward and could be removed, but | |
1789 // the compilers don't call this function except as a last resort, | |
1790 // so it probably doesn't matter. | |
6983 | 1791 src->klass()->copy_array((arrayOopDesc*)src, src_pos, |
0 | 1792 (arrayOopDesc*)dest, dest_pos, |
1793 length, thread); | |
1794 } | |
1795 JRT_END | |
1796 | |
1797 char* SharedRuntime::generate_class_cast_message( | |
1798 JavaThread* thread, const char* objName) { | |
1799 | |
1800 // Get target class name from the checkcast instruction | |
1801 vframeStream vfst(thread, true); | |
1802 assert(!vfst.at_end(), "Java frame must exist"); | |
2142 | 1803 Bytecode_checkcast cc(vfst.method(), vfst.method()->bcp_from(vfst.bci())); |
6983 | 1804 Klass* targetKlass = vfst.method()->constants()->klass_at( |
1805 cc.index(), thread); | |
0 | 1806 return generate_class_cast_message(objName, targetKlass->external_name()); |
1807 } | |
1808 | |
1809 char* SharedRuntime::generate_class_cast_message( | |
710 | 1810 const char* objName, const char* targetKlassName, const char* desc) { |
0 | 1811 size_t msglen = strlen(objName) + strlen(desc) + strlen(targetKlassName) + 1; |
1812 | |
53 | 1813 char* message = NEW_RESOURCE_ARRAY(char, msglen); |
0 | 1814 if (NULL == message) { |
53 | 1815 // Shouldn't happen, but don't cause even more problems if it does |
0 | 1816 message = const_cast<char*>(objName); |
1817 } else { | |
1818 jio_snprintf(message, msglen, "%s%s%s", objName, desc, targetKlassName); | |
1819 } | |
1820 return message; | |
1821 } | |
1822 | |
1823 JRT_LEAF(void, SharedRuntime::reguard_yellow_pages()) | |
1824 (void) JavaThread::current()->reguard_stack(); | |
1825 JRT_END | |
1826 | |
1827 | |
1828 // Handles the uncommon case in locking, i.e., contention or an inflated lock. | |
1829 #ifndef PRODUCT | |
1830 int SharedRuntime::_monitor_enter_ctr=0; | |
1831 #endif | |
1832 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::complete_monitor_locking_C(oopDesc* _obj, BasicLock* lock, JavaThread* thread)) | |
1833 oop obj(_obj); | |
1834 #ifndef PRODUCT | |
1835 _monitor_enter_ctr++; // monitor enter slow | |
1836 #endif | |
1837 if (PrintBiasedLockingStatistics) { | |
1838 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
1839 } | |
1840 Handle h_obj(THREAD, obj); | |
1841 if (UseBiasedLocking) { | |
1842 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
1843 ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); | |
1844 } else { | |
1845 ObjectSynchronizer::slow_enter(h_obj, lock, CHECK); | |
1846 } | |
1847 assert(!HAS_PENDING_EXCEPTION, "Should have no exception here"); | |
1848 JRT_END | |
1849 | |
1850 #ifndef PRODUCT | |
1851 int SharedRuntime::_monitor_exit_ctr=0; | |
1852 #endif | |
1853 // Handles the uncommon cases of monitor unlocking in compiled code | |
1854 JRT_LEAF(void, SharedRuntime::complete_monitor_unlocking_C(oopDesc* _obj, BasicLock* lock)) | |
1855 oop obj(_obj); | |
1856 #ifndef PRODUCT | |
1857 _monitor_exit_ctr++; // monitor exit slow | |
1858 #endif | |
1859 Thread* THREAD = JavaThread::current(); | |
1860 // I'm not convinced we need the code contained by MIGHT_HAVE_PENDING anymore | |
1861 // testing was unable to ever fire the assert that guarded it so I have removed it. | |
1862 assert(!HAS_PENDING_EXCEPTION, "Do we need code below anymore?"); | |
1863 #undef MIGHT_HAVE_PENDING | |
1864 #ifdef MIGHT_HAVE_PENDING | |
1865 // Save and restore any pending_exception around the exception mark. | |
1866 // While the slow_exit must not throw an exception, we could come into | |
1867 // this routine with one set. | |
1868 oop pending_excep = NULL; | |
1869 const char* pending_file; | |
1870 int pending_line; | |
1871 if (HAS_PENDING_EXCEPTION) { | |
1872 pending_excep = PENDING_EXCEPTION; | |
1873 pending_file = THREAD->exception_file(); | |
1874 pending_line = THREAD->exception_line(); | |
1875 CLEAR_PENDING_EXCEPTION; | |
1876 } | |
1877 #endif /* MIGHT_HAVE_PENDING */ | |
1878 | |
1879 { | |
1880 // Exit must be non-blocking, and therefore no exceptions can be thrown. | |
1881 EXCEPTION_MARK; | |
1882 ObjectSynchronizer::slow_exit(obj, lock, THREAD); | |
1883 } | |
1884 | |
1885 #ifdef MIGHT_HAVE_PENDING | |
1886 if (pending_excep != NULL) { | |
1887 THREAD->set_pending_exception(pending_excep, pending_file, pending_line); | |
1888 } | |
1889 #endif /* MIGHT_HAVE_PENDING */ | |
1890 JRT_END | |
1891 | |
1892 #ifndef PRODUCT | |
1893 | |
1894 void SharedRuntime::print_statistics() { | |
1895 ttyLocker ttyl; | |
1896 if (xtty != NULL) xtty->head("statistics type='SharedRuntime'"); | |
1897 | |
1898 if (_monitor_enter_ctr ) tty->print_cr("%5d monitor enter slow", _monitor_enter_ctr); | |
1899 if (_monitor_exit_ctr ) tty->print_cr("%5d monitor exit slow", _monitor_exit_ctr); | |
1900 if (_throw_null_ctr) tty->print_cr("%5d implicit null throw", _throw_null_ctr); | |
1901 | |
1902 SharedRuntime::print_ic_miss_histogram(); | |
1903 | |
1904 if (CountRemovableExceptions) { | |
1905 if (_nof_removable_exceptions > 0) { | |
1906 Unimplemented(); // this counter is not yet incremented | |
1907 tty->print_cr("Removable exceptions: %d", _nof_removable_exceptions); | |
1908 } | |
1909 } | |
1910 | |
1911 // Dump the JRT_ENTRY counters | |
1912 if( _new_instance_ctr ) tty->print_cr("%5d new instance requires GC", _new_instance_ctr); | |
1913 if( _new_array_ctr ) tty->print_cr("%5d new array requires GC", _new_array_ctr); | |
1914 if( _multi1_ctr ) tty->print_cr("%5d multianewarray 1 dim", _multi1_ctr); | |
1915 if( _multi2_ctr ) tty->print_cr("%5d multianewarray 2 dim", _multi2_ctr); | |
1916 if( _multi3_ctr ) tty->print_cr("%5d multianewarray 3 dim", _multi3_ctr); | |
1917 if( _multi4_ctr ) tty->print_cr("%5d multianewarray 4 dim", _multi4_ctr); | |
1918 if( _multi5_ctr ) tty->print_cr("%5d multianewarray 5 dim", _multi5_ctr); | |
1919 | |
1920 tty->print_cr("%5d inline cache miss in compiled", _ic_miss_ctr ); | |
1921 tty->print_cr("%5d wrong method", _wrong_method_ctr ); | |
1922 tty->print_cr("%5d unresolved static call site", _resolve_static_ctr ); | |
1923 tty->print_cr("%5d unresolved virtual call site", _resolve_virtual_ctr ); | |
1924 tty->print_cr("%5d unresolved opt virtual call site", _resolve_opt_virtual_ctr ); | |
1925 | |
1926 if( _mon_enter_stub_ctr ) tty->print_cr("%5d monitor enter stub", _mon_enter_stub_ctr ); | |
1927 if( _mon_exit_stub_ctr ) tty->print_cr("%5d monitor exit stub", _mon_exit_stub_ctr ); | |
1928 if( _mon_enter_ctr ) tty->print_cr("%5d monitor enter slow", _mon_enter_ctr ); | |
1929 if( _mon_exit_ctr ) tty->print_cr("%5d monitor exit slow", _mon_exit_ctr ); | |
1930 if( _partial_subtype_ctr) tty->print_cr("%5d slow partial subtype", _partial_subtype_ctr ); | |
1931 if( _jbyte_array_copy_ctr ) tty->print_cr("%5d byte array copies", _jbyte_array_copy_ctr ); | |
1932 if( _jshort_array_copy_ctr ) tty->print_cr("%5d short array copies", _jshort_array_copy_ctr ); | |
1933 if( _jint_array_copy_ctr ) tty->print_cr("%5d int array copies", _jint_array_copy_ctr ); | |
1934 if( _jlong_array_copy_ctr ) tty->print_cr("%5d long array copies", _jlong_array_copy_ctr ); | |
1935 if( _oop_array_copy_ctr ) tty->print_cr("%5d oop array copies", _oop_array_copy_ctr ); | |
1936 if( _checkcast_array_copy_ctr ) tty->print_cr("%5d checkcast array copies", _checkcast_array_copy_ctr ); | |
1937 if( _unsafe_array_copy_ctr ) tty->print_cr("%5d unsafe array copies", _unsafe_array_copy_ctr ); | |
1938 if( _generic_array_copy_ctr ) tty->print_cr("%5d generic array copies", _generic_array_copy_ctr ); | |
1939 if( _slow_array_copy_ctr ) tty->print_cr("%5d slow array copies", _slow_array_copy_ctr ); | |
1940 if( _find_handler_ctr ) tty->print_cr("%5d find exception handler", _find_handler_ctr ); | |
1941 if( _rethrow_ctr ) tty->print_cr("%5d rethrow handler", _rethrow_ctr ); | |
1942 | |
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1943 AdapterHandlerLibrary::print_statistics(); |
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1944 |
0 | 1945 if (xtty != NULL) xtty->tail("statistics"); |
1946 } | |
1947 | |
1948 inline double percent(int x, int y) { | |
1949 return 100.0 * x / MAX2(y, 1); | |
1950 } | |
1951 | |
1952 class MethodArityHistogram { | |
1953 public: | |
1954 enum { MAX_ARITY = 256 }; | |
1955 private: | |
1956 static int _arity_histogram[MAX_ARITY]; // histogram of #args | |
1957 static int _size_histogram[MAX_ARITY]; // histogram of arg size in words | |
1958 static int _max_arity; // max. arity seen | |
1959 static int _max_size; // max. arg size seen | |
1960 | |
1961 static void add_method_to_histogram(nmethod* nm) { | |
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1962 Method* m = nm->method(); |
0 | 1963 ArgumentCount args(m->signature()); |
1964 int arity = args.size() + (m->is_static() ? 0 : 1); | |
1965 int argsize = m->size_of_parameters(); | |
1966 arity = MIN2(arity, MAX_ARITY-1); | |
1967 argsize = MIN2(argsize, MAX_ARITY-1); | |
1968 int count = nm->method()->compiled_invocation_count(); | |
1969 _arity_histogram[arity] += count; | |
1970 _size_histogram[argsize] += count; | |
1971 _max_arity = MAX2(_max_arity, arity); | |
1972 _max_size = MAX2(_max_size, argsize); | |
1973 } | |
1974 | |
1975 void print_histogram_helper(int n, int* histo, const char* name) { | |
1976 const int N = MIN2(5, n); | |
1977 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
1978 double sum = 0; | |
1979 double weighted_sum = 0; | |
1980 int i; | |
1981 for (i = 0; i <= n; i++) { sum += histo[i]; weighted_sum += i*histo[i]; } | |
1982 double rest = sum; | |
1983 double percent = sum / 100; | |
1984 for (i = 0; i <= N; i++) { | |
1985 rest -= histo[i]; | |
1986 tty->print_cr("%4d: %7d (%5.1f%%)", i, histo[i], histo[i] / percent); | |
1987 } | |
1988 tty->print_cr("rest: %7d (%5.1f%%))", (int)rest, rest / percent); | |
1989 tty->print_cr("(avg. %s = %3.1f, max = %d)", name, weighted_sum / sum, n); | |
1990 } | |
1991 | |
1992 void print_histogram() { | |
1993 tty->print_cr("\nHistogram of call arity (incl. rcvr, calls to compiled methods only):"); | |
1994 print_histogram_helper(_max_arity, _arity_histogram, "arity"); | |
1995 tty->print_cr("\nSame for parameter size (in words):"); | |
1996 print_histogram_helper(_max_size, _size_histogram, "size"); | |
1997 tty->cr(); | |
1998 } | |
1999 | |
2000 public: | |
2001 MethodArityHistogram() { | |
2002 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); | |
2003 _max_arity = _max_size = 0; | |
2004 for (int i = 0; i < MAX_ARITY; i++) _arity_histogram[i] = _size_histogram [i] = 0; | |
2005 CodeCache::nmethods_do(add_method_to_histogram); | |
2006 print_histogram(); | |
2007 } | |
2008 }; | |
2009 | |
2010 int MethodArityHistogram::_arity_histogram[MethodArityHistogram::MAX_ARITY]; | |
2011 int MethodArityHistogram::_size_histogram[MethodArityHistogram::MAX_ARITY]; | |
2012 int MethodArityHistogram::_max_arity; | |
2013 int MethodArityHistogram::_max_size; | |
2014 | |
2015 void SharedRuntime::print_call_statistics(int comp_total) { | |
2016 tty->print_cr("Calls from compiled code:"); | |
2017 int total = _nof_normal_calls + _nof_interface_calls + _nof_static_calls; | |
2018 int mono_c = _nof_normal_calls - _nof_optimized_calls - _nof_megamorphic_calls; | |
2019 int mono_i = _nof_interface_calls - _nof_optimized_interface_calls - _nof_megamorphic_interface_calls; | |
2020 tty->print_cr("\t%9d (%4.1f%%) total non-inlined ", total, percent(total, total)); | |
2021 tty->print_cr("\t%9d (%4.1f%%) virtual calls ", _nof_normal_calls, percent(_nof_normal_calls, total)); | |
2022 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_calls, percent(_nof_inlined_calls, _nof_normal_calls)); | |
2023 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_calls, percent(_nof_optimized_calls, _nof_normal_calls)); | |
2024 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_c, percent(mono_c, _nof_normal_calls)); | |
2025 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_calls, percent(_nof_megamorphic_calls, _nof_normal_calls)); | |
2026 tty->print_cr("\t%9d (%4.1f%%) interface calls ", _nof_interface_calls, percent(_nof_interface_calls, total)); | |
2027 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_interface_calls, percent(_nof_inlined_interface_calls, _nof_interface_calls)); | |
2028 tty->print_cr("\t %9d (%3.0f%%) optimized ", _nof_optimized_interface_calls, percent(_nof_optimized_interface_calls, _nof_interface_calls)); | |
2029 tty->print_cr("\t %9d (%3.0f%%) monomorphic ", mono_i, percent(mono_i, _nof_interface_calls)); | |
2030 tty->print_cr("\t %9d (%3.0f%%) megamorphic ", _nof_megamorphic_interface_calls, percent(_nof_megamorphic_interface_calls, _nof_interface_calls)); | |
2031 tty->print_cr("\t%9d (%4.1f%%) static/special calls", _nof_static_calls, percent(_nof_static_calls, total)); | |
2032 tty->print_cr("\t %9d (%3.0f%%) inlined ", _nof_inlined_static_calls, percent(_nof_inlined_static_calls, _nof_static_calls)); | |
2033 tty->cr(); | |
2034 tty->print_cr("Note 1: counter updates are not MT-safe."); | |
2035 tty->print_cr("Note 2: %% in major categories are relative to total non-inlined calls;"); | |
2036 tty->print_cr(" %% in nested categories are relative to their category"); | |
2037 tty->print_cr(" (and thus add up to more than 100%% with inlining)"); | |
2038 tty->cr(); | |
2039 | |
2040 MethodArityHistogram h; | |
2041 } | |
2042 #endif | |
2043 | |
2044 | |
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2045 // A simple wrapper class around the calling convention information |
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2046 // that allows sharing of adapters for the same calling convention. |
6197 | 2047 class AdapterFingerPrint : public CHeapObj<mtCode> { |
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2048 private: |
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2049 enum { |
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2050 _basic_type_bits = 4, |
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2051 _basic_type_mask = right_n_bits(_basic_type_bits), |
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2052 _basic_types_per_int = BitsPerInt / _basic_type_bits, |
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2053 _compact_int_count = 3 |
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2054 }; |
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2055 // TO DO: Consider integrating this with a more global scheme for compressing signatures. |
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2056 // For now, 4 bits per components (plus T_VOID gaps after double/long) is not excessive. |
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2057 |
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2058 union { |
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2059 int _compact[_compact_int_count]; |
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2060 int* _fingerprint; |
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2061 } _value; |
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2062 int _length; // A negative length indicates the fingerprint is in the compact form, |
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2063 // Otherwise _value._fingerprint is the array. |
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2064 |
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2065 // Remap BasicTypes that are handled equivalently by the adapters. |
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2066 // These are correct for the current system but someday it might be |
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2067 // necessary to make this mapping platform dependent. |
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2068 static int adapter_encoding(BasicType in) { |
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2069 switch(in) { |
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2070 case T_BOOLEAN: |
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2071 case T_BYTE: |
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2072 case T_SHORT: |
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2073 case T_CHAR: |
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2074 // There are all promoted to T_INT in the calling convention |
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2075 return T_INT; |
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2076 |
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2077 case T_OBJECT: |
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2078 case T_ARRAY: |
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2079 // In other words, we assume that any register good enough for |
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2080 // an int or long is good enough for a managed pointer. |
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2081 #ifdef _LP64 |
1506 | 2082 return T_LONG; |
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2083 #else |
1506 | 2084 return T_INT; |
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|
2085 #endif |
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2086 |
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2087 case T_INT: |
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|
2088 case T_LONG: |
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2089 case T_FLOAT: |
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|
2090 case T_DOUBLE: |
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|
2091 case T_VOID: |
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|
2092 return in; |
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|
2093 |
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|
2094 default: |
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|
2095 ShouldNotReachHere(); |
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|
2096 return T_CONFLICT; |
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|
2097 } |
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|
2098 } |
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|
2099 |
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|
2100 public: |
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|
2101 AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) { |
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2102 // The fingerprint is based on the BasicType signature encoded |
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|
2103 // into an array of ints with eight entries per int. |
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|
2104 int* ptr; |
6266
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2105 int len = (total_args_passed + (_basic_types_per_int-1)) / _basic_types_per_int; |
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2106 if (len <= _compact_int_count) { |
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2107 assert(_compact_int_count == 3, "else change next line"); |
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2108 _value._compact[0] = _value._compact[1] = _value._compact[2] = 0; |
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|
2109 // Storing the signature encoded as signed chars hits about 98% |
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|
2110 // of the time. |
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|
2111 _length = -len; |
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|
2112 ptr = _value._compact; |
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|
2113 } else { |
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|
2114 _length = len; |
6197 | 2115 _value._fingerprint = NEW_C_HEAP_ARRAY(int, _length, mtCode); |
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|
2116 ptr = _value._fingerprint; |
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|
2117 } |
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|
2118 |
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|
2119 // Now pack the BasicTypes with 8 per int |
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|
2120 int sig_index = 0; |
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|
2121 for (int index = 0; index < len; index++) { |
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|
2122 int value = 0; |
6266
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|
2123 for (int byte = 0; byte < _basic_types_per_int; byte++) { |
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|
2124 int bt = ((sig_index < total_args_passed) |
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|
2125 ? adapter_encoding(sig_bt[sig_index++]) |
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|
2126 : 0); |
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|
2127 assert((bt & _basic_type_mask) == bt, "must fit in 4 bits"); |
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|
2128 value = (value << _basic_type_bits) | bt; |
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|
2129 } |
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|
2130 ptr[index] = value; |
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|
2131 } |
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|
2132 } |
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|
2133 |
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|
2134 ~AdapterFingerPrint() { |
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|
2135 if (_length > 0) { |
6197 | 2136 FREE_C_HEAP_ARRAY(int, _value._fingerprint, mtCode); |
1187
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|
2137 } |
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|
2138 } |
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|
2139 |
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|
2140 int value(int index) { |
1187
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|
2141 if (_length < 0) { |
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|
2142 return _value._compact[index]; |
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|
2143 } |
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|
2144 return _value._fingerprint[index]; |
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|
2145 } |
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|
2146 int length() { |
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|
2147 if (_length < 0) return -_length; |
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|
2148 return _length; |
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|
2149 } |
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|
2150 |
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|
2151 bool is_compact() { |
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|
2152 return _length <= 0; |
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|
2153 } |
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|
2154 |
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|
2155 unsigned int compute_hash() { |
1207
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|
2156 int hash = 0; |
1187
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|
2157 for (int i = 0; i < length(); i++) { |
1207
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|
2158 int v = value(i); |
1187
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|
2159 hash = (hash << 8) ^ v ^ (hash >> 5); |
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|
2160 } |
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|
2161 return (unsigned int)hash; |
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|
2162 } |
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|
2163 |
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|
2164 const char* as_string() { |
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|
2165 stringStream st; |
3841
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|
2166 st.print("0x"); |
1187
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|
2167 for (int i = 0; i < length(); i++) { |
3841
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|
2168 st.print("%08x", value(i)); |
1187
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|
2169 } |
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|
2170 return st.as_string(); |
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|
2171 } |
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|
2172 |
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|
2173 bool equals(AdapterFingerPrint* other) { |
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|
2174 if (other->_length != _length) { |
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|
2175 return false; |
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|
2176 } |
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|
2177 if (_length < 0) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
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6197
diff
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|
2178 assert(_compact_int_count == 3, "else change next line"); |
1207
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|
2179 return _value._compact[0] == other->_value._compact[0] && |
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2180 _value._compact[1] == other->_value._compact[1] && |
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2181 _value._compact[2] == other->_value._compact[2]; |
1187
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|
2182 } else { |
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|
2183 for (int i = 0; i < _length; i++) { |
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6911204: generated adapters with large signatures can fill up the code cache
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|
2184 if (_value._fingerprint[i] != other->_value._fingerprint[i]) { |
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6911204: generated adapters with large signatures can fill up the code cache
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|
2185 return false; |
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|
2186 } |
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|
2187 } |
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|
2188 } |
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|
2189 return true; |
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|
2190 } |
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|
2191 }; |
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|
2192 |
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|
2193 |
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|
2194 // A hashtable mapping from AdapterFingerPrints to AdapterHandlerEntries |
6197 | 2195 class AdapterHandlerTable : public BasicHashtable<mtCode> { |
1187
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|
2196 friend class AdapterHandlerTableIterator; |
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|
2197 |
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|
2198 private: |
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|
2199 |
1263
e7b1cc79bd25
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|
2200 #ifndef PRODUCT |
1187
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|
2201 static int _lookups; // number of calls to lookup |
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|
2202 static int _buckets; // number of buckets checked |
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|
2203 static int _equals; // number of buckets checked with matching hash |
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|
2204 static int _hits; // number of successful lookups |
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|
2205 static int _compact; // number of equals calls with compact signature |
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|
2206 #endif |
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|
2207 |
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|
2208 AdapterHandlerEntry* bucket(int i) { |
6197 | 2209 return (AdapterHandlerEntry*)BasicHashtable<mtCode>::bucket(i); |
1187
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|
2210 } |
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|
2211 |
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|
2212 public: |
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|
2213 AdapterHandlerTable() |
6197 | 2214 : BasicHashtable<mtCode>(293, sizeof(AdapterHandlerEntry)) { } |
1187
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|
2215 |
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|
2216 // Create a new entry suitable for insertion in the table |
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|
2217 AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { |
6197 | 2218 AdapterHandlerEntry* entry = (AdapterHandlerEntry*)BasicHashtable<mtCode>::new_entry(fingerprint->compute_hash()); |
1187
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|
2219 entry->init(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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|
2220 return entry; |
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|
2221 } |
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|
2222 |
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|
2223 // Insert an entry into the table |
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|
2224 void add(AdapterHandlerEntry* entry) { |
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changeset
|
2225 int index = hash_to_index(entry->hash()); |
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|
2226 add_entry(index, entry); |
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|
2227 } |
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|
2228 |
1207
74c848d437ab
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|
2229 void free_entry(AdapterHandlerEntry* entry) { |
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changeset
|
2230 entry->deallocate(); |
6197 | 2231 BasicHashtable<mtCode>::free_entry(entry); |
1207
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|
2232 } |
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diff
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|
2233 |
1187
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|
2234 // Find a entry with the same fingerprint if it exists |
1207
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|
2235 AdapterHandlerEntry* lookup(int total_args_passed, BasicType* sig_bt) { |
1263
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|
2236 NOT_PRODUCT(_lookups++); |
1207
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6921922: fix for 6911204 breaks tagged stack interpreter
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|
2237 AdapterFingerPrint fp(total_args_passed, sig_bt); |
1187
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|
2238 unsigned int hash = fp.compute_hash(); |
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changeset
|
2239 int index = hash_to_index(hash); |
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changeset
|
2240 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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|
2241 NOT_PRODUCT(_buckets++); |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2242 if (e->hash() == hash) { |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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1257
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|
2243 NOT_PRODUCT(_equals++); |
1187
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changeset
|
2244 if (fp.equals(e->fingerprint())) { |
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
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|
2245 #ifndef PRODUCT |
1187
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6911204: generated adapters with large signatures can fill up the code cache
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|
2246 if (fp.is_compact()) _compact++; |
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|
2247 _hits++; |
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diff
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|
2248 #endif |
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diff
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|
2249 return e; |
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|
2250 } |
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diff
changeset
|
2251 } |
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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 return NULL; |
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diff
changeset
|
2254 } |
cf0685d550f1
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diff
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|
2255 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
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1257
diff
changeset
|
2256 #ifndef PRODUCT |
1187
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diff
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|
2257 void print_statistics() { |
cf0685d550f1
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never
parents:
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diff
changeset
|
2258 ResourceMark rm; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2259 int longest = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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diff
changeset
|
2260 int empty = 0; |
cf0685d550f1
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never
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diff
changeset
|
2261 int total = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2262 int nonempty = 0; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2263 for (int index = 0; index < table_size(); index++) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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diff
changeset
|
2264 int count = 0; |
cf0685d550f1
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diff
changeset
|
2265 for (AdapterHandlerEntry* e = bucket(index); e != NULL; e = e->next()) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2266 count++; |
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never
parents:
1142
diff
changeset
|
2267 } |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2268 if (count != 0) nonempty++; |
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never
parents:
1142
diff
changeset
|
2269 if (count == 0) empty++; |
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never
parents:
1142
diff
changeset
|
2270 if (count > longest) longest = count; |
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never
parents:
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diff
changeset
|
2271 total += count; |
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diff
changeset
|
2272 } |
cf0685d550f1
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diff
changeset
|
2273 tty->print_cr("AdapterHandlerTable: empty %d longest %d total %d average %f", |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
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|
2274 empty, longest, total, total / (double)nonempty); |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
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|
2275 tty->print_cr("AdapterHandlerTable: lookups %d buckets %d equals %d hits %d compact %d", |
cf0685d550f1
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changeset
|
2276 _lookups, _buckets, _equals, _hits, _compact); |
1263
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6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
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|
2277 } |
1187
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diff
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|
2278 #endif |
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never
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diff
changeset
|
2279 }; |
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diff
changeset
|
2280 |
cf0685d550f1
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diff
changeset
|
2281 |
1263
e7b1cc79bd25
6926697: "optimized" VM build failed: The type "AdapterHandlerTableIterator" is incomplete
kvn
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1257
diff
changeset
|
2282 #ifndef PRODUCT |
1187
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never
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|
2283 |
cf0685d550f1
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changeset
|
2284 int AdapterHandlerTable::_lookups; |
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parents:
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changeset
|
2285 int AdapterHandlerTable::_buckets; |
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parents:
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diff
changeset
|
2286 int AdapterHandlerTable::_equals; |
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parents:
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diff
changeset
|
2287 int AdapterHandlerTable::_hits; |
cf0685d550f1
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parents:
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diff
changeset
|
2288 int AdapterHandlerTable::_compact; |
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never
parents:
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diff
changeset
|
2289 |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2290 #endif |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1644
diff
changeset
|
2291 |
1187
cf0685d550f1
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diff
changeset
|
2292 class AdapterHandlerTableIterator : public StackObj { |
cf0685d550f1
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never
parents:
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diff
changeset
|
2293 private: |
cf0685d550f1
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never
parents:
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diff
changeset
|
2294 AdapterHandlerTable* _table; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2295 int _index; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2296 AdapterHandlerEntry* _current; |
cf0685d550f1
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never
parents:
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diff
changeset
|
2297 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2298 void scan() { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2299 while (_index < _table->table_size()) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2300 AdapterHandlerEntry* a = _table->bucket(_index); |
1564 | 2301 _index++; |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2302 if (a != NULL) { |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2303 _current = a; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2304 return; |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2305 } |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2306 } |
cf0685d550f1
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never
parents:
1142
diff
changeset
|
2307 } |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
diff
changeset
|
2308 |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
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diff
changeset
|
2309 public: |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
1142
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2310 AdapterHandlerTableIterator(AdapterHandlerTable* table): _table(table), _index(0), _current(NULL) { |
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2311 scan(); |
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2312 } |
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2313 bool has_next() { |
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2314 return _current != NULL; |
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2315 } |
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2316 AdapterHandlerEntry* next() { |
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2317 if (_current != NULL) { |
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2318 AdapterHandlerEntry* result = _current; |
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2319 _current = _current->next(); |
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2320 if (_current == NULL) scan(); |
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2321 return result; |
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2322 } else { |
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2323 return NULL; |
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2324 } |
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2325 } |
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2326 }; |
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2327 |
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2328 |
0 | 2329 // --------------------------------------------------------------------------- |
2330 // Implementation of AdapterHandlerLibrary | |
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2331 AdapterHandlerTable* AdapterHandlerLibrary::_adapters = NULL; |
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2332 AdapterHandlerEntry* AdapterHandlerLibrary::_abstract_method_handler = NULL; |
0 | 2333 const int AdapterHandlerLibrary_size = 16*K; |
742
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2334 BufferBlob* AdapterHandlerLibrary::_buffer = NULL; |
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2335 |
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2336 BufferBlob* AdapterHandlerLibrary::buffer_blob() { |
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2337 // Should be called only when AdapterHandlerLibrary_lock is active. |
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2338 if (_buffer == NULL) // Initialize lazily |
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2339 _buffer = BufferBlob::create("adapters", AdapterHandlerLibrary_size); |
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2340 return _buffer; |
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2341 } |
0 | 2342 |
2343 void AdapterHandlerLibrary::initialize() { | |
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2344 if (_adapters != NULL) return; |
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2345 _adapters = new AdapterHandlerTable(); |
0 | 2346 |
2347 // Create a special handler for abstract methods. Abstract methods | |
2348 // are never compiled so an i2c entry is somewhat meaningless, but | |
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2349 // throw AbstractMethodError just in case. |
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2350 // Pass wrong_method_abstract for the c2i transitions to return |
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2351 // AbstractMethodError for invalid invocations. |
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2352 address wrong_method_abstract = SharedRuntime::get_handle_wrong_method_abstract_stub(); |
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2353 _abstract_method_handler = AdapterHandlerLibrary::new_entry(new AdapterFingerPrint(0, NULL), |
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2354 StubRoutines::throw_AbstractMethodError_entry(), |
13382
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2355 wrong_method_abstract, wrong_method_abstract); |
0 | 2356 } |
2357 | |
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2358 AdapterHandlerEntry* AdapterHandlerLibrary::new_entry(AdapterFingerPrint* fingerprint, |
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2359 address i2c_entry, |
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2360 address c2i_entry, |
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2361 address c2i_unverified_entry) { |
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2362 return _adapters->new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
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2363 } |
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2364 |
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2365 AdapterHandlerEntry* AdapterHandlerLibrary::get_adapter(methodHandle method) { |
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2366 // Use customized signature handler. Need to lock around updates to |
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2367 // the AdapterHandlerTable (it is not safe for concurrent readers |
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2368 // and a single writer: this could be fixed if it becomes a |
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2369 // problem). |
0 | 2370 |
2371 // Get the address of the ic_miss handlers before we grab the | |
2372 // AdapterHandlerLibrary_lock. This fixes bug 6236259 which | |
2373 // was caused by the initialization of the stubs happening | |
2374 // while we held the lock and then notifying jvmti while | |
2375 // holding it. This just forces the initialization to be a little | |
2376 // earlier. | |
2377 address ic_miss = SharedRuntime::get_ic_miss_stub(); | |
2378 assert(ic_miss != NULL, "must have handler"); | |
2379 | |
1187
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2380 ResourceMark rm; |
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2381 |
1748 | 2382 NOT_PRODUCT(int insts_size); |
14198 | 2383 AdapterBlob* new_adapter = NULL; |
742
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2384 AdapterHandlerEntry* entry = NULL; |
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2385 AdapterFingerPrint* fingerprint = NULL; |
0 | 2386 { |
2387 MutexLocker mu(AdapterHandlerLibrary_lock); | |
2388 // make sure data structure is initialized | |
2389 initialize(); | |
2390 | |
2391 if (method->is_abstract()) { | |
1187
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2392 return _abstract_method_handler; |
0 | 2393 } |
2394 | |
1187
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2395 // Fill in the signature array, for the calling-convention call. |
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2396 int total_args_passed = method->size_of_parameters(); // All args on stack |
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2397 |
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2398 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
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2399 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
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2400 int i = 0; |
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2401 if (!method->is_static()) // Pass in receiver first |
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2402 sig_bt[i++] = T_OBJECT; |
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2403 for (SignatureStream ss(method->signature()); !ss.at_return_type(); ss.next()) { |
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2404 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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2405 if (ss.type() == T_LONG || ss.type() == T_DOUBLE) |
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2406 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
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2407 } |
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2408 assert(i == total_args_passed, ""); |
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2409 |
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2410 // Lookup method signature's fingerprint |
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2411 entry = _adapters->lookup(total_args_passed, sig_bt); |
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2412 |
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2413 #ifdef ASSERT |
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|
2414 AdapterHandlerEntry* shared_entry = NULL; |
14198 | 2415 // Start adapter sharing verification only after the VM is booted. |
2416 if (VerifyAdapterSharing && (entry != NULL)) { | |
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2417 shared_entry = entry; |
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2418 entry = NULL; |
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|
2419 } |
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|
2420 #endif |
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2421 |
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2422 if (entry != NULL) { |
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2423 return entry; |
0 | 2424 } |
2425 | |
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2426 // Get a description of the compiled java calling convention and the largest used (VMReg) stack slot usage |
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2427 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, false); |
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2428 |
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2429 // Make a C heap allocated version of the fingerprint to store in the adapter |
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2430 fingerprint = new AdapterFingerPrint(total_args_passed, sig_bt); |
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2431 |
14198 | 2432 // StubRoutines::code2() is initialized after this function can be called. As a result, |
2433 // VerifyAdapterCalls and VerifyAdapterSharing can fail if we re-use code that generated | |
2434 // prior to StubRoutines::code2() being set. Checks refer to checks generated in an I2C | |
2435 // stub that ensure that an I2C stub is called from an interpreter frame. | |
2436 bool contains_all_checks = StubRoutines::code2() != NULL; | |
2437 | |
0 | 2438 // Create I2C & C2I handlers |
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2439 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
742
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2440 if (buf != NULL) { |
1748 | 2441 CodeBuffer buffer(buf); |
742
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2442 short buffer_locs[20]; |
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2443 buffer.insts()->initialize_shared_locs((relocInfo*)buffer_locs, |
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2444 sizeof(buffer_locs)/sizeof(relocInfo)); |
14198 | 2445 |
742
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2446 MacroAssembler _masm(&buffer); |
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2447 entry = SharedRuntime::generate_i2c2i_adapters(&_masm, |
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2448 total_args_passed, |
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2449 comp_args_on_stack, |
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2450 sig_bt, |
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2451 regs, |
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2452 fingerprint); |
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2453 #ifdef ASSERT |
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2454 if (VerifyAdapterSharing) { |
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2455 if (shared_entry != NULL) { |
14198 | 2456 assert(shared_entry->compare_code(buf->code_begin(), buffer.insts_size()), "code must match"); |
1207
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2457 // Release the one just created and return the original |
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2458 _adapters->free_entry(entry); |
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2459 return shared_entry; |
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2460 } else { |
14198 | 2461 entry->save_code(buf->code_begin(), buffer.insts_size()); |
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2462 } |
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2463 } |
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2464 #endif |
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2465 |
14198 | 2466 new_adapter = AdapterBlob::create(&buffer); |
1748 | 2467 NOT_PRODUCT(insts_size = buffer.insts_size()); |
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2468 } |
14198 | 2469 if (new_adapter == NULL) { |
28 | 2470 // CodeCache is full, disable compilation |
2471 // Ought to log this but compile log is only per compile thread | |
2472 // and we're some non descript Java thread. | |
1202 | 2473 MutexUnlocker mu(AdapterHandlerLibrary_lock); |
2474 CompileBroker::handle_full_code_cache(); | |
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2475 return NULL; // Out of CodeCache space |
28 | 2476 } |
14198 | 2477 entry->relocate(new_adapter->content_begin()); |
0 | 2478 #ifndef PRODUCT |
2479 // debugging suppport | |
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2480 if (PrintAdapterHandlers || PrintStubCode) { |
6796
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2481 ttyLocker ttyl; |
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|
2482 entry->print_adapter_on(tty); |
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|
2483 tty->print_cr("i2c argument handler #%d for: %s %s (%d bytes generated)", |
1187
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diff
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|
2484 _adapters->number_of_entries(), (method->is_static() ? "static" : "receiver"), |
6266
1d7922586cf6
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changeset
|
2485 method->signature()->as_C_string(), insts_size); |
0 | 2486 tty->print_cr("c2i argument handler starts at %p",entry->get_c2i_entry()); |
6266
1d7922586cf6
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|
2487 if (Verbose || PrintStubCode) { |
1d7922586cf6
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|
2488 address first_pc = entry->base_address(); |
6796
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|
2489 if (first_pc != NULL) { |
6266
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|
2490 Disassembler::decode(first_pc, first_pc + insts_size); |
6796
b31471cdc53e
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|
2491 tty->cr(); |
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|
2492 } |
6266
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|
2493 } |
0 | 2494 } |
2495 #endif | |
14198 | 2496 // Add the entry only if the entry contains all required checks (see sharedRuntime_xxx.cpp) |
2497 // The checks are inserted only if -XX:+VerifyAdapterCalls is specified. | |
2498 if (contains_all_checks || !VerifyAdapterCalls) { | |
2499 _adapters->add(entry); | |
2500 } | |
0 | 2501 } |
2502 // Outside of the lock | |
14198 | 2503 if (new_adapter != NULL) { |
0 | 2504 char blob_id[256]; |
2505 jio_snprintf(blob_id, | |
2506 sizeof(blob_id), | |
1187
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|
2507 "%s(%s)@" PTR_FORMAT, |
14198 | 2508 new_adapter->name(), |
1187
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|
2509 fingerprint->as_string(), |
14198 | 2510 new_adapter->content_begin()); |
2511 Forte::register_stub(blob_id, new_adapter->content_begin(),new_adapter->content_end()); | |
0 | 2512 |
2513 if (JvmtiExport::should_post_dynamic_code_generated()) { | |
14198 | 2514 JvmtiExport::post_dynamic_code_generated(blob_id, new_adapter->content_begin(), new_adapter->content_end()); |
0 | 2515 } |
2516 } | |
1187
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|
2517 return entry; |
0 | 2518 } |
2519 | |
6266
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|
2520 address AdapterHandlerEntry::base_address() { |
1d7922586cf6
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|
2521 address base = _i2c_entry; |
1d7922586cf6
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changeset
|
2522 if (base == NULL) base = _c2i_entry; |
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|
2523 assert(base <= _c2i_entry || _c2i_entry == NULL, ""); |
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|
2524 assert(base <= _c2i_unverified_entry || _c2i_unverified_entry == NULL, ""); |
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|
2525 return base; |
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|
2526 } |
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|
2527 |
0 | 2528 void AdapterHandlerEntry::relocate(address new_base) { |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2529 address old_base = base_address(); |
1d7922586cf6
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|
2530 assert(old_base != NULL, ""); |
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|
2531 ptrdiff_t delta = new_base - old_base; |
1d7922586cf6
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|
2532 if (_i2c_entry != NULL) |
0 | 2533 _i2c_entry += delta; |
6266
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|
2534 if (_c2i_entry != NULL) |
0 | 2535 _c2i_entry += delta; |
6266
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|
2536 if (_c2i_unverified_entry != NULL) |
0 | 2537 _c2i_unverified_entry += delta; |
6266
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changeset
|
2538 assert(base_address() == new_base, ""); |
0 | 2539 } |
2540 | |
1207
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|
2541 |
74c848d437ab
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changeset
|
2542 void AdapterHandlerEntry::deallocate() { |
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|
2543 delete _fingerprint; |
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changeset
|
2544 #ifdef ASSERT |
6197 | 2545 if (_saved_code) FREE_C_HEAP_ARRAY(unsigned char, _saved_code, mtCode); |
1207
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diff
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|
2546 #endif |
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diff
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|
2547 } |
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|
2548 |
74c848d437ab
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changeset
|
2549 |
74c848d437ab
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changeset
|
2550 #ifdef ASSERT |
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diff
changeset
|
2551 // Capture the code before relocation so that it can be compared |
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diff
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|
2552 // against other versions. If the code is captured after relocation |
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diff
changeset
|
2553 // then relative instructions won't be equivalent. |
14198 | 2554 void AdapterHandlerEntry::save_code(unsigned char* buffer, int length) { |
6197 | 2555 _saved_code = NEW_C_HEAP_ARRAY(unsigned char, length, mtCode); |
14198 | 2556 _saved_code_length = length; |
1207
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diff
changeset
|
2557 memcpy(_saved_code, buffer, length); |
74c848d437ab
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parents:
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diff
changeset
|
2558 } |
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changeset
|
2559 |
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diff
changeset
|
2560 |
14198 | 2561 bool AdapterHandlerEntry::compare_code(unsigned char* buffer, int length) { |
2562 if (length != _saved_code_length) { | |
1207
74c848d437ab
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parents:
1205
diff
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|
2563 return false; |
74c848d437ab
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1205
diff
changeset
|
2564 } |
14198 | 2565 |
2566 return (memcmp(buffer, _saved_code, length) == 0) ? true : false; | |
1207
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parents:
1205
diff
changeset
|
2567 } |
74c848d437ab
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parents:
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diff
changeset
|
2568 #endif |
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diff
changeset
|
2569 |
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diff
changeset
|
2570 |
14236 | 2571 /** |
2572 * Create a native wrapper for this native method. The wrapper converts the | |
2573 * Java-compiled calling convention to the native convention, handles | |
2574 * arguments, and transitions to native. On return from the native we transition | |
2575 * back to java blocking if a safepoint is in progress. | |
2576 */ | |
2577 void AdapterHandlerLibrary::create_native_wrapper(methodHandle method) { | |
0 | 2578 ResourceMark rm; |
2579 nmethod* nm = NULL; | |
2580 | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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changeset
|
2581 assert(method->is_native(), "must be native"); |
1d7922586cf6
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|
2582 assert(method->is_method_handle_intrinsic() || |
1d7922586cf6
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|
2583 method->has_native_function(), "must have something valid to call!"); |
0 | 2584 |
2585 { | |
14236 | 2586 // Perform the work while holding the lock, but perform any printing outside the lock |
0 | 2587 MutexLocker mu(AdapterHandlerLibrary_lock); |
2588 // See if somebody beat us to it | |
2589 nm = method->code(); | |
14236 | 2590 if (nm != NULL) { |
2591 return; | |
0 | 2592 } |
2593 | |
14236 | 2594 const int compile_id = CompileBroker::assign_compile_id(method, CompileBroker::standard_entry_bci); |
2595 assert(compile_id > 0, "Must generate native wrapper"); | |
2596 | |
2597 | |
742
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|
2598 ResourceMark rm; |
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|
2599 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
45463a04ca27
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diff
changeset
|
2600 if (buf != NULL) { |
1748 | 2601 CodeBuffer buffer(buf); |
742
45463a04ca27
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|
2602 double locs_buf[20]; |
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|
2603 buffer.insts()->initialize_shared_locs((relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
45463a04ca27
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diff
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|
2604 MacroAssembler _masm(&buffer); |
45463a04ca27
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diff
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|
2605 |
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diff
changeset
|
2606 // Fill in the signature array, for the calling-convention call. |
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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6725
diff
changeset
|
2607 const int total_args_passed = method->size_of_parameters(); |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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diff
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|
2608 |
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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diff
changeset
|
2609 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
2cb2f30450c7
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diff
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|
2610 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
742
45463a04ca27
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diff
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|
2611 int i=0; |
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diff
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|
2612 if( !method->is_static() ) // Pass in receiver first |
45463a04ca27
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diff
changeset
|
2613 sig_bt[i++] = T_OBJECT; |
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diff
changeset
|
2614 SignatureStream ss(method->signature()); |
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diff
changeset
|
2615 for( ; !ss.at_return_type(); ss.next()) { |
45463a04ca27
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diff
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|
2616 sig_bt[i++] = ss.type(); // Collect remaining bits of signature |
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diff
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|
2617 if( ss.type() == T_LONG || ss.type() == T_DOUBLE ) |
45463a04ca27
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diff
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|
2618 sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
45463a04ca27
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diff
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|
2619 } |
6790
2cb2f30450c7
7196262: JSR 292: java/lang/invoke/PrivateInvokeTest.java fails on solaris-sparc
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6725
diff
changeset
|
2620 assert(i == total_args_passed, ""); |
742
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|
2621 BasicType ret_type = ss.type(); |
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|
2622 |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
diff
changeset
|
2623 // Now get the compiled-Java layout as input (or output) arguments. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
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|
2624 // NOTE: Stubs for compiled entry points of method handle intrinsics |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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|
2625 // are just trampolines so the argument registers must be outgoing ones. |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
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|
2626 const bool is_outgoing = method->is_method_handle_intrinsic(); |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6197
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|
2627 int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing); |
742
45463a04ca27
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|
2628 |
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|
2629 // Generate the compiled-to-native wrapper code |
14236 | 2630 nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type); |
2631 | |
2632 if (nm != NULL) { | |
2633 method->set_code(method, nm); | |
2634 } | |
0 | 2635 } |
14236 | 2636 } // Unlock AdapterHandlerLibrary_lock |
2637 | |
1728
a62d332029cf
6976372: # assert(_owner == Thread::current()) failed: invariant
never
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1681
diff
changeset
|
2638 |
0 | 2639 // Install the generated code. |
2640 if (nm != NULL) { | |
2405
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2641 if (PrintCompilation) { |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
twisti
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2321
diff
changeset
|
2642 ttyLocker ttyl; |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
diff
changeset
|
2643 CompileTask::print_compilation(tty, nm, method->is_static() ? "(static)" : ""); |
3d58a4983660
7022998: JSR 292 recursive method handle calls inline themselves infinitely
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2321
diff
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|
2644 } |
0 | 2645 nm->post_compiled_method_load_event(); |
2646 } else { | |
2647 // CodeCache is full, disable compilation | |
1202 | 2648 CompileBroker::handle_full_code_cache(); |
0 | 2649 } |
2650 } | |
2651 | |
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2652 JRT_ENTRY_NO_ASYNC(void, SharedRuntime::block_for_jni_critical(JavaThread* thread)) |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2653 assert(thread == JavaThread::current(), "must be"); |
0382d2b469b2
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never
parents:
4872
diff
changeset
|
2654 // The code is about to enter a JNI lazy critical native method and |
0382d2b469b2
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parents:
4872
diff
changeset
|
2655 // _needs_gc is true, so if this thread is already in a critical |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2656 // section then just return, otherwise this thread should block |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2657 // until needs_gc has been cleared. |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2658 if (thread->in_critical()) { |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2659 return; |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2660 } |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
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parents:
4872
diff
changeset
|
2661 // Lock and unlock a critical section to give the system a chance to block |
0382d2b469b2
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parents:
4872
diff
changeset
|
2662 GC_locker::lock_critical(thread); |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
2663 GC_locker::unlock_critical(thread); |
0382d2b469b2
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parents:
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diff
changeset
|
2664 JRT_END |
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parents:
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|
2665 |
116
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2666 #ifdef HAVE_DTRACE_H |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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62
diff
changeset
|
2667 // Create a dtrace nmethod for this method. The wrapper converts the |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
2668 // java compiled calling convention to the native convention, makes a dummy call |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2669 // (actually nops for the size of the call instruction, which become a trap if |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2670 // probe is enabled). The returns to the caller. Since this all looks like a |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2671 // leaf no thread transition is needed. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2672 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2673 nmethod *AdapterHandlerLibrary::create_dtrace_nmethod(methodHandle method) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2674 ResourceMark rm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2675 nmethod* nm = NULL; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2676 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2677 if (PrintCompilation) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2678 ttyLocker ttyl; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2679 tty->print("--- n%s "); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2680 method->print_short_name(tty); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2681 if (method->is_static()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2682 tty->print(" (static)"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2683 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2684 tty->cr(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2685 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2686 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2687 { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2688 // perform the work while holding the lock, but perform any printing |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2689 // outside the lock |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2690 MutexLocker mu(AdapterHandlerLibrary_lock); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2691 // See if somebody beat us to it |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2692 nm = method->code(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2693 if (nm) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2694 return nm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2695 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2696 |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2697 ResourceMark rm; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2698 |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2699 BufferBlob* buf = buffer_blob(); // the temporary code buffer in CodeCache |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2700 if (buf != NULL) { |
1748 | 2701 CodeBuffer buffer(buf); |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2702 // Need a few relocation entries |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2703 double locs_buf[20]; |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2704 buffer.insts()->initialize_shared_locs( |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2705 (relocInfo*)locs_buf, sizeof(locs_buf) / sizeof(relocInfo)); |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2706 MacroAssembler _masm(&buffer); |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2707 |
742
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2708 // Generate the compiled-to-native wrapper code |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2709 nm = SharedRuntime::generate_dtrace_nmethod(&_masm, method); |
45463a04ca27
6834177: Running jsynprog on Solaris Nevada can cause JVM crash
kvn
parents:
710
diff
changeset
|
2710 } |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2711 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2712 return nm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2713 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2714 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2715 // the dtrace method needs to convert java lang string to utf8 string. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2716 void SharedRuntime::get_utf(oopDesc* src, address dst) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2717 typeArrayOop jlsValue = java_lang_String::value(src); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2718 int jlsOffset = java_lang_String::offset(src); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2719 int jlsLen = java_lang_String::length(src); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2720 jchar* jlsPos = (jlsLen == 0) ? NULL : |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2721 jlsValue->char_at_addr(jlsOffset); |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6796
diff
changeset
|
2722 assert(TypeArrayKlass::cast(jlsValue->klass())->element_type() == T_CHAR, "compressed string"); |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2723 (void) UNICODE::as_utf8(jlsPos, jlsLen, (char *)dst, max_dtrace_string_size); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2724 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2725 #endif // ndef HAVE_DTRACE_H |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
62
diff
changeset
|
2726 |
14418
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2727 int SharedRuntime::convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2728 int argcnt = in_args_count; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2729 if (CCallingConventionRequiresIntsAsLongs) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2730 for (int in = 0; in < in_args_count; in++) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2731 BasicType bt = in_sig_bt[in]; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2732 switch (bt) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2733 case T_BOOLEAN: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2734 case T_CHAR: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2735 case T_BYTE: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2736 case T_SHORT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2737 case T_INT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2738 argcnt++; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2739 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2740 default: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2741 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2742 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2743 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2744 } else { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2745 assert(0, "This should not be needed on this platform"); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2746 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2747 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2748 return argcnt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2749 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2750 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2751 void SharedRuntime::convert_ints_to_longints(int i2l_argcnt, int& in_args_count, |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2752 BasicType*& in_sig_bt, VMRegPair*& in_regs) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2753 if (CCallingConventionRequiresIntsAsLongs) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2754 VMRegPair *new_in_regs = NEW_RESOURCE_ARRAY(VMRegPair, i2l_argcnt); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2755 BasicType *new_in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, i2l_argcnt); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2756 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2757 int argcnt = 0; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2758 for (int in = 0; in < in_args_count; in++, argcnt++) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2759 BasicType bt = in_sig_bt[in]; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2760 VMRegPair reg = in_regs[in]; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2761 switch (bt) { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2762 case T_BOOLEAN: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2763 case T_CHAR: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2764 case T_BYTE: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2765 case T_SHORT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2766 case T_INT: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2767 // Convert (bt) to (T_LONG,bt). |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2768 new_in_sig_bt[argcnt ] = T_LONG; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2769 new_in_sig_bt[argcnt+1] = bt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2770 assert(reg.first()->is_valid() && !reg.second()->is_valid(), ""); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2771 new_in_regs[argcnt ].set2(reg.first()); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2772 new_in_regs[argcnt+1].set_bad(); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2773 argcnt++; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2774 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2775 default: |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2776 // No conversion needed. |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2777 new_in_sig_bt[argcnt] = bt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2778 new_in_regs[argcnt] = reg; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2779 break; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2780 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2781 } |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2782 assert(argcnt == i2l_argcnt, "must match"); |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2783 |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2784 in_regs = new_in_regs; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2785 in_sig_bt = new_in_sig_bt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2786 in_args_count = i2l_argcnt; |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
14396
diff
changeset
|
2787 } else { |
cfd05ec74089
8024342: PPC64 (part 111): Support for C calling conventions that require 64-bit ints.
goetz
parents:
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2788 assert(0, "This should not be needed on this platform"); |
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2789 } |
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2790 } |
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2791 |
0 | 2792 // ------------------------------------------------------------------------- |
2793 // Java-Java calling convention | |
2794 // (what you use when Java calls Java) | |
2795 | |
2796 //------------------------------name_for_receiver---------------------------------- | |
2797 // For a given signature, return the VMReg for parameter 0. | |
2798 VMReg SharedRuntime::name_for_receiver() { | |
2799 VMRegPair regs; | |
2800 BasicType sig_bt = T_OBJECT; | |
2801 (void) java_calling_convention(&sig_bt, ®s, 1, true); | |
2802 // Return argument 0 register. In the LP64 build pointers | |
2803 // take 2 registers, but the VM wants only the 'main' name. | |
2804 return regs.first(); | |
2805 } | |
2806 | |
10390 | 2807 VMRegPair *SharedRuntime::find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, int* arg_size) { |
0 | 2808 // This method is returning a data structure allocating as a |
2809 // ResourceObject, so do not put any ResourceMarks in here. | |
2810 char *s = sig->as_C_string(); | |
2811 int len = (int)strlen(s); | |
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2812 s++; len--; // Skip opening paren |
0 | 2813 char *t = s+len; |
2814 while( *(--t) != ')' ) ; // Find close paren | |
2815 | |
2816 BasicType *sig_bt = NEW_RESOURCE_ARRAY( BasicType, 256 ); | |
2817 VMRegPair *regs = NEW_RESOURCE_ARRAY( VMRegPair, 256 ); | |
2818 int cnt = 0; | |
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2819 if (has_receiver) { |
0 | 2820 sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature |
2821 } | |
2822 | |
2823 while( s < t ) { | |
2824 switch( *s++ ) { // Switch on signature character | |
2825 case 'B': sig_bt[cnt++] = T_BYTE; break; | |
2826 case 'C': sig_bt[cnt++] = T_CHAR; break; | |
2827 case 'D': sig_bt[cnt++] = T_DOUBLE; sig_bt[cnt++] = T_VOID; break; | |
2828 case 'F': sig_bt[cnt++] = T_FLOAT; break; | |
2829 case 'I': sig_bt[cnt++] = T_INT; break; | |
2830 case 'J': sig_bt[cnt++] = T_LONG; sig_bt[cnt++] = T_VOID; break; | |
2831 case 'S': sig_bt[cnt++] = T_SHORT; break; | |
2832 case 'Z': sig_bt[cnt++] = T_BOOLEAN; break; | |
2833 case 'V': sig_bt[cnt++] = T_VOID; break; | |
2834 case 'L': // Oop | |
2835 while( *s++ != ';' ) ; // Skip signature | |
2836 sig_bt[cnt++] = T_OBJECT; | |
2837 break; | |
2838 case '[': { // Array | |
2839 do { // Skip optional size | |
2840 while( *s >= '0' && *s <= '9' ) s++; | |
2841 } while( *s++ == '[' ); // Nested arrays? | |
2842 // Skip element type | |
2843 if( s[-1] == 'L' ) | |
2844 while( *s++ != ';' ) ; // Skip signature | |
2845 sig_bt[cnt++] = T_ARRAY; | |
2846 break; | |
2847 } | |
2848 default : ShouldNotReachHere(); | |
2849 } | |
2850 } | |
10390 | 2851 |
2852 if (has_appendix) { | |
2853 sig_bt[cnt++] = T_OBJECT; | |
2854 } | |
2855 | |
0 | 2856 assert( cnt < 256, "grow table size" ); |
2857 | |
2858 int comp_args_on_stack; | |
2859 comp_args_on_stack = java_calling_convention(sig_bt, regs, cnt, true); | |
2860 | |
2861 // the calling convention doesn't count out_preserve_stack_slots so | |
2862 // we must add that in to get "true" stack offsets. | |
2863 | |
2864 if (comp_args_on_stack) { | |
2865 for (int i = 0; i < cnt; i++) { | |
2866 VMReg reg1 = regs[i].first(); | |
2867 if( reg1->is_stack()) { | |
2868 // Yuck | |
2869 reg1 = reg1->bias(out_preserve_stack_slots()); | |
2870 } | |
2871 VMReg reg2 = regs[i].second(); | |
2872 if( reg2->is_stack()) { | |
2873 // Yuck | |
2874 reg2 = reg2->bias(out_preserve_stack_slots()); | |
2875 } | |
2876 regs[i].set_pair(reg2, reg1); | |
2877 } | |
2878 } | |
2879 | |
2880 // results | |
2881 *arg_size = cnt; | |
2882 return regs; | |
2883 } | |
2884 | |
2885 // OSR Migration Code | |
2886 // | |
2887 // This code is used convert interpreter frames into compiled frames. It is | |
2888 // called from very start of a compiled OSR nmethod. A temp array is | |
2889 // allocated to hold the interesting bits of the interpreter frame. All | |
2890 // active locks are inflated to allow them to move. The displaced headers and | |
14309 | 2891 // active interpreter locals are copied into the temp buffer. Then we return |
0 | 2892 // back to the compiled code. The compiled code then pops the current |
2893 // interpreter frame off the stack and pushes a new compiled frame. Then it | |
2894 // copies the interpreter locals and displaced headers where it wants. | |
2895 // Finally it calls back to free the temp buffer. | |
2896 // | |
2897 // All of this is done NOT at any Safepoint, nor is any safepoint or GC allowed. | |
2898 | |
2899 JRT_LEAF(intptr_t*, SharedRuntime::OSR_migration_begin( JavaThread *thread) ) | |
2900 | |
2901 // | |
2902 // This code is dependent on the memory layout of the interpreter local | |
2903 // array and the monitors. On all of our platforms the layout is identical | |
2904 // so this code is shared. If some platform lays the their arrays out | |
2905 // differently then this code could move to platform specific code or | |
2906 // the code here could be modified to copy items one at a time using | |
2907 // frame accessor methods and be platform independent. | |
2908 | |
2909 frame fr = thread->last_frame(); | |
2910 assert( fr.is_interpreted_frame(), "" ); | |
2911 assert( fr.interpreter_frame_expression_stack_size()==0, "only handle empty stacks" ); | |
2912 | |
2913 // Figure out how many monitors are active. | |
2914 int active_monitor_count = 0; | |
2915 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
2916 kptr < fr.interpreter_frame_monitor_begin(); | |
2917 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
2918 if( kptr->obj() != NULL ) active_monitor_count++; | |
2919 } | |
2920 | |
2921 // QQQ we could place number of active monitors in the array so that compiled code | |
2922 // could double check it. | |
2923 | |
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2924 Method* moop = fr.interpreter_frame_method(); |
0 | 2925 int max_locals = moop->max_locals(); |
2926 // Allocate temp buffer, 1 word per local & 2 per active monitor | |
2927 int buf_size_words = max_locals + active_monitor_count*2; | |
6197 | 2928 intptr_t *buf = NEW_C_HEAP_ARRAY(intptr_t,buf_size_words, mtCode); |
0 | 2929 |
2930 // Copy the locals. Order is preserved so that loading of longs works. | |
2931 // Since there's no GC I can copy the oops blindly. | |
2932 assert( sizeof(HeapWord)==sizeof(intptr_t), "fix this code"); | |
1506 | 2933 Copy::disjoint_words((HeapWord*)fr.interpreter_frame_local_at(max_locals-1), |
0 | 2934 (HeapWord*)&buf[0], |
2935 max_locals); | |
2936 | |
2937 // Inflate locks. Copy the displaced headers. Be careful, there can be holes. | |
2938 int i = max_locals; | |
2939 for( BasicObjectLock *kptr2 = fr.interpreter_frame_monitor_end(); | |
2940 kptr2 < fr.interpreter_frame_monitor_begin(); | |
2941 kptr2 = fr.next_monitor_in_interpreter_frame(kptr2) ) { | |
2942 if( kptr2->obj() != NULL) { // Avoid 'holes' in the monitor array | |
2943 BasicLock *lock = kptr2->lock(); | |
2944 // Inflate so the displaced header becomes position-independent | |
2945 if (lock->displaced_header()->is_unlocked()) | |
2946 ObjectSynchronizer::inflate_helper(kptr2->obj()); | |
2947 // Now the displaced header is free to move | |
2948 buf[i++] = (intptr_t)lock->displaced_header(); | |
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2949 buf[i++] = cast_from_oop<intptr_t>(kptr2->obj()); |
0 | 2950 } |
2951 } | |
2952 assert( i - max_locals == active_monitor_count*2, "found the expected number of monitors" ); | |
2953 | |
2954 return buf; | |
2955 JRT_END | |
2956 | |
2957 JRT_LEAF(void, SharedRuntime::OSR_migration_end( intptr_t* buf) ) | |
6197 | 2958 FREE_C_HEAP_ARRAY(intptr_t,buf, mtCode); |
0 | 2959 JRT_END |
2960 | |
2961 bool AdapterHandlerLibrary::contains(CodeBlob* b) { | |
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2962 AdapterHandlerTableIterator iter(_adapters); |
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2963 while (iter.has_next()) { |
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2964 AdapterHandlerEntry* a = iter.next(); |
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2965 if ( b == CodeCache::find_blob(a->get_i2c_entry()) ) return true; |
0 | 2966 } |
2967 return false; | |
2968 } | |
2969 | |
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2970 void AdapterHandlerLibrary::print_handler_on(outputStream* st, CodeBlob* b) { |
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2971 AdapterHandlerTableIterator iter(_adapters); |
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2972 while (iter.has_next()) { |
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2973 AdapterHandlerEntry* a = iter.next(); |
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2974 if (b == CodeCache::find_blob(a->get_i2c_entry())) { |
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2975 st->print("Adapter for signature: "); |
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2976 a->print_adapter_on(tty); |
0 | 2977 return; |
2978 } | |
2979 } | |
2980 assert(false, "Should have found handler"); | |
2981 } | |
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2982 |
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2983 void AdapterHandlerEntry::print_adapter_on(outputStream* st) const { |
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2984 st->print_cr("AHE@" INTPTR_FORMAT ": %s i2c: " INTPTR_FORMAT " c2i: " INTPTR_FORMAT " c2iUV: " INTPTR_FORMAT, |
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2985 (intptr_t) this, fingerprint()->as_string(), |
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2986 get_i2c_entry(), get_c2i_entry(), get_c2i_unverified_entry()); |
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2987 |
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2988 } |
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2989 |
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2990 #ifndef PRODUCT |
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2991 |
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2992 void AdapterHandlerLibrary::print_statistics() { |
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2993 _adapters->print_statistics(); |
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2994 } |
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2995 |
0 | 2996 #endif /* PRODUCT */ |