1 /*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "oops/metadata.hpp"
27 #include "runtime/os.hpp"
28 #include "code/relocInfo.hpp"
29 #include "interpreter/invocationCounter.hpp"
30 #include "runtime/arguments.hpp"
31 #include "runtime/commandLineFlagConstraintsCompiler.hpp"
32 #include "runtime/commandLineFlagRangeList.hpp"
33 #include "runtime/globals.hpp"
34 #include "utilities/defaultStream.hpp"
35
36 Flag::Error AliasLevelConstraintFunc(intx value, bool verbose) {
37 if ((value <= 1) && (Arguments::mode() == Arguments::_comp || Arguments::mode() == Arguments::_mixed)) {
38 CommandLineError::print(verbose,
39 "AliasLevel (" INTX_FORMAT ") is not "
40 "compatible with -Xcomp or -Xmixed\n",
41 value);
42 return Flag::VIOLATES_CONSTRAINT;
43 } else {
44 return Flag::SUCCESS;
45 }
46 }
47
48 /**
49 * Validate the minimum number of compiler threads needed to run the
50 * JVM. The following configurations are possible.
51 *
52 * 1) The JVM is build using an interpreter only. As a result, the minimum number of
53 * compiler threads is 0.
54 * 2) The JVM is build using the compiler(s) and tiered compilation is disabled. As
55 * a result, either C1 or C2 is used, so the minimum number of compiler threads is 1.
56 * 3) The JVM is build using the compiler(s) and tiered compilation is enabled. However,
57 * the option "TieredStopAtLevel < CompLevel_full_optimization". As a result, only
58 * C1 can be used, so the minimum number of compiler threads is 1.
59 * 4) The JVM is build using the compilers and tiered compilation is enabled. The option
60 * 'TieredStopAtLevel = CompLevel_full_optimization' (the default value). As a result,
61 * the minimum number of compiler threads is 2.
62 */
63 Flag::Error CICompilerCountConstraintFunc(intx value, bool verbose) {
64 int min_number_of_compiler_threads = 0;
65 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) && !INCLUDE_JVMCI
66 // case 1
67 #else
68 if (!TieredCompilation || (TieredStopAtLevel < CompLevel_full_optimization)) {
69 min_number_of_compiler_threads = 1; // case 2 or case 3
70 } else {
71 min_number_of_compiler_threads = 2; // case 4 (tiered)
72 }
73 #endif
74
75 // The default CICompilerCount's value is CI_COMPILER_COUNT.
76 // With a client VM, -XX:+TieredCompilation causes TieredCompilation
77 // to be true here (the option is validated later) and
78 // min_number_of_compiler_threads to exceed CI_COMPILER_COUNT.
79 min_number_of_compiler_threads = MIN2(min_number_of_compiler_threads, CI_COMPILER_COUNT);
80
81 if (value < (intx)min_number_of_compiler_threads) {
82 CommandLineError::print(verbose,
83 "CICompilerCount (" INTX_FORMAT ") must be "
84 "at least %d \n",
85 value, min_number_of_compiler_threads);
86 return Flag::VIOLATES_CONSTRAINT;
87 } else {
88 return Flag::SUCCESS;
89 }
90 }
91
92 Flag::Error AllocatePrefetchDistanceConstraintFunc(intx value, bool verbose) {
93 if (value < 0) {
94 CommandLineError::print(verbose,
95 "Unable to determine system-specific value for AllocatePrefetchDistance. "
96 "Please provide appropriate value, if unsure, use 0 to disable prefetching\n");
97 return Flag::VIOLATES_CONSTRAINT;
98 }
99
100 return Flag::SUCCESS;
101 }
102
103 Flag::Error AllocatePrefetchInstrConstraintFunc(intx value, bool verbose) {
104 intx max_value = max_intx;
105 #if defined(SPARC)
106 max_value = 1;
107 #elif defined(X86)
108 max_value = 3;
109 #endif
110 if (value < 0 || value > max_value) {
111 CommandLineError::print(verbose,
112 "AllocatePrefetchInstr (" INTX_FORMAT ") must be "
113 "between 0 and " INTX_FORMAT "\n", value, max_value);
114 return Flag::VIOLATES_CONSTRAINT;
115 }
116
117 return Flag::SUCCESS;
118 }
119
120 Flag::Error AllocatePrefetchStepSizeConstraintFunc(intx value, bool verbose) {
121 if (value < 1 || value > max_jint) {
122 CommandLineError::print(verbose,
123 "AllocatePrefetchStepSize (" INTX_FORMAT ") "
124 "must be between 1 and %d\n",
125 AllocatePrefetchStepSize,
126 max_jint);
127 return Flag::VIOLATES_CONSTRAINT;
128 }
129
130 if (AllocatePrefetchDistance % AllocatePrefetchStepSize != 0) {
131 CommandLineError::print(verbose,
132 "AllocatePrefetchDistance (" INTX_FORMAT ") "
133 "%% AllocatePrefetchStepSize (" INTX_FORMAT ") "
134 "= " INTX_FORMAT " "
135 "must be 0\n",
136 AllocatePrefetchDistance, AllocatePrefetchStepSize,
137 AllocatePrefetchDistance % AllocatePrefetchStepSize);
138 return Flag::VIOLATES_CONSTRAINT;
139 }
140
141 return Flag::SUCCESS;
142 }
143
144 Flag::Error CompileThresholdConstraintFunc(intx value, bool verbose) {
145 if (value < 0 || value > INT_MAX >> InvocationCounter::count_shift) {
146 CommandLineError::print(verbose,
147 "CompileThreshold (" INTX_FORMAT ") "
148 "must be between 0 and %d\n",
149 value,
150 INT_MAX >> InvocationCounter::count_shift);
151 return Flag::VIOLATES_CONSTRAINT;
152 }
153
154 return Flag::SUCCESS;
155 }
156
157 Flag::Error OnStackReplacePercentageConstraintFunc(intx value, bool verbose) {
158 int backward_branch_limit;
159 if (ProfileInterpreter) {
160 if (OnStackReplacePercentage < InterpreterProfilePercentage) {
161 CommandLineError::print(verbose,
162 "OnStackReplacePercentage (" INTX_FORMAT ") must be "
163 "larger than InterpreterProfilePercentage (" INTX_FORMAT ")\n",
164 OnStackReplacePercentage, InterpreterProfilePercentage);
165 return Flag::VIOLATES_CONSTRAINT;
166 }
167
168 backward_branch_limit = ((CompileThreshold * (OnStackReplacePercentage - InterpreterProfilePercentage)) / 100)
169 << InvocationCounter::count_shift;
170
171 if (backward_branch_limit < 0) {
172 CommandLineError::print(verbose,
173 "CompileThreshold * (InterpreterProfilePercentage - OnStackReplacePercentage) / 100 = "
174 INTX_FORMAT " "
175 "must be between 0 and " INTX_FORMAT ", try changing "
176 "CompileThreshold, InterpreterProfilePercentage, and/or OnStackReplacePercentage\n",
177 (CompileThreshold * (OnStackReplacePercentage - InterpreterProfilePercentage)) / 100,
178 INT_MAX >> InvocationCounter::count_shift);
179 return Flag::VIOLATES_CONSTRAINT;
180 }
181 } else {
182 if (OnStackReplacePercentage < 0 ) {
183 CommandLineError::print(verbose,
184 "OnStackReplacePercentage (" INTX_FORMAT ") must be "
185 "non-negative\n", OnStackReplacePercentage);
186 return Flag::VIOLATES_CONSTRAINT;
187 }
188
189 backward_branch_limit = ((CompileThreshold * OnStackReplacePercentage) / 100)
190 << InvocationCounter::count_shift;
191
192 if (backward_branch_limit < 0) {
193 CommandLineError::print(verbose,
194 "CompileThreshold * OnStackReplacePercentage / 100 = " INTX_FORMAT " "
195 "must be between 0 and " INTX_FORMAT ", try changing "
196 "CompileThreshold and/or OnStackReplacePercentage\n",
197 (CompileThreshold * OnStackReplacePercentage) / 100,
198 INT_MAX >> InvocationCounter::count_shift);
199 return Flag::VIOLATES_CONSTRAINT;
200 }
201 }
202 return Flag::SUCCESS;
203 }
204
205 Flag::Error CodeCacheSegmentSizeConstraintFunc(uintx value, bool verbose) {
206 if (CodeCacheSegmentSize < (uintx)CodeEntryAlignment) {
207 CommandLineError::print(verbose,
208 "CodeCacheSegmentSize (" UINTX_FORMAT ") must be "
209 "larger than or equal to CodeEntryAlignment (" INTX_FORMAT ") "
210 "to align entry points\n",
211 CodeCacheSegmentSize, CodeEntryAlignment);
212 return Flag::VIOLATES_CONSTRAINT;
213 }
214
215 if (CodeCacheSegmentSize < sizeof(jdouble)) {
216 CommandLineError::print(verbose,
217 "CodeCacheSegmentSize (" UINTX_FORMAT ") must be "
218 "at least " SIZE_FORMAT " to align constants\n",
219 CodeCacheSegmentSize, sizeof(jdouble));
220 return Flag::VIOLATES_CONSTRAINT;
221 }
222
223 #ifdef COMPILER2
224 if (CodeCacheSegmentSize < (uintx)OptoLoopAlignment) {
225 CommandLineError::print(verbose,
226 "CodeCacheSegmentSize (" UINTX_FORMAT ") must be "
227 "larger than or equal to OptoLoopAlignment (" INTX_FORMAT ") "
228 "to align inner loops\n",
229 CodeCacheSegmentSize, OptoLoopAlignment);
230 return Flag::VIOLATES_CONSTRAINT;
231 }
232 #endif
233
234 return Flag::SUCCESS;
235 }
236
237 Flag::Error CompilerThreadPriorityConstraintFunc(intx value, bool verbose) {
238 #ifdef SOLARIS
239 if ((value < MinimumPriority || value > MaximumPriority) &&
240 (value != -1) && (value != -FXCriticalPriority)) {
241 CommandLineError::print(verbose,
242 "CompileThreadPriority (" INTX_FORMAT ") must be "
243 "between %d and %d inclusively or -1 (means no change) "
244 "or %d (special value for critical thread class/priority)\n",
245 value, MinimumPriority, MaximumPriority, -FXCriticalPriority);
246 return Flag::VIOLATES_CONSTRAINT;
247 }
248 #endif
249
250 return Flag::SUCCESS;
251 }
252
253 Flag::Error CodeEntryAlignmentConstraintFunc(intx value, bool verbose) {
254 #ifdef SPARC
255 if (CodeEntryAlignment % relocInfo::addr_unit() != 0) {
256 CommandLineError::print(verbose,
257 "CodeEntryAlignment (" INTX_FORMAT ") must be "
258 "multiple of NOP size\n", CodeEntryAlignment);
259 return Flag::VIOLATES_CONSTRAINT;
260 }
261 #endif
262
263 if (!is_power_of_2(value)) {
264 CommandLineError::print(verbose,
265 "CodeEntryAlignment (" INTX_FORMAT ") must be "
266 "a power of two\n", CodeEntryAlignment);
267 return Flag::VIOLATES_CONSTRAINT;
268 }
269
270 if (CodeEntryAlignment < 16) {
271 CommandLineError::print(verbose,
272 "CodeEntryAlignment (" INTX_FORMAT ") must be "
273 "greater than or equal to %d\n",
274 CodeEntryAlignment, 16);
275 return Flag::VIOLATES_CONSTRAINT;
276 }
277
278 return Flag::SUCCESS;
279 }
280
281 Flag::Error OptoLoopAlignmentConstraintFunc(intx value, bool verbose) {
282 if (!is_power_of_2(value)) {
283 CommandLineError::print(verbose,
284 "OptoLoopAlignment (" INTX_FORMAT ") "
285 "must be a power of two\n",
286 value);
287 return Flag::VIOLATES_CONSTRAINT;
288 }
289
290 #ifdef SPARC
291 if (OptoLoopAlignment % relocInfo::addr_unit() != 0) {
292 CommandLineError::print(verbose,
293 "OptoLoopAlignment (" INTX_FORMAT ") must be "
294 "multiple of NOP size\n");
295 return Flag::VIOLATES_CONSTRAINT;
296 }
297 #endif
298
299 return Flag::SUCCESS;
300 }
301
302 Flag::Error ArraycopyDstPrefetchDistanceConstraintFunc(uintx value, bool verbose) {
303 if (value != 0) {
304 CommandLineError::print(verbose,
305 "ArraycopyDstPrefetchDistance (" UINTX_FORMAT ") must be 0\n",
306 value);
307 return Flag::VIOLATES_CONSTRAINT;
308 }
309
310 return Flag::SUCCESS;
311 }
312
313 Flag::Error ArraycopySrcPrefetchDistanceConstraintFunc(uintx value, bool verbose) {
314 if (value != 0) {
315 CommandLineError::print(verbose,
316 "ArraycopySrcPrefetchDistance (" UINTX_FORMAT ") must be 0\n",
317 value);
318 return Flag::VIOLATES_CONSTRAINT;
319 }
320
321 return Flag::SUCCESS;
322 }
323
324 Flag::Error TypeProfileLevelConstraintFunc(uintx value, bool verbose) {
325 for (int i = 0; i < 3; i++) {
326 if (value % 10 > 2) {
327 CommandLineError::print(verbose,
328 "Invalid value (" UINTX_FORMAT ") "
329 "in TypeProfileLevel at position %d\n", value, i);
330 return Flag::VIOLATES_CONSTRAINT;
331 }
332 value = value / 10;
333 }
334
335 return Flag::SUCCESS;
336 }
337
338 #ifdef COMPILER2
339 Flag::Error InteriorEntryAlignmentConstraintFunc(intx value, bool verbose) {
340 if (InteriorEntryAlignment > CodeEntryAlignment) {
341 CommandLineError::print(verbose,
342 "InteriorEntryAlignment (" INTX_FORMAT ") must be "
343 "less than or equal to CodeEntryAlignment (" INTX_FORMAT ")\n",
344 InteriorEntryAlignment, CodeEntryAlignment);
345 return Flag::VIOLATES_CONSTRAINT;
346 }
347
348 #ifdef SPARC
349 if (InteriorEntryAlignment % relocInfo::addr_unit() != 0) {
350 CommandLineError::print(verbose,
351 "InteriorEntryAlignment (" INTX_FORMAT ") must be "
352 "multiple of NOP size\n");
353 return Flag::VIOLATES_CONSTRAINT;
354 }
355 #endif
356
357 if (!is_power_of_2(value)) {
358 CommandLineError::print(verbose,
359 "InteriorEntryAlignment (" INTX_FORMAT ") must be "
360 "a power of two\n", InteriorEntryAlignment);
361 return Flag::VIOLATES_CONSTRAINT;
362 }
363
364 int minimum_alignment = 16;
365 #if defined(SPARC) || (defined(X86) && !defined(AMD64))
366 minimum_alignment = 4;
367 #endif
368
369 if (InteriorEntryAlignment < minimum_alignment) {
370 CommandLineError::print(verbose,
371 "InteriorEntryAlignment (" INTX_FORMAT ") must be "
372 "greater than or equal to %d\n",
373 InteriorEntryAlignment, minimum_alignment);
374 return Flag::VIOLATES_CONSTRAINT;
375 }
376
377 return Flag::SUCCESS;
378 }
379
380 Flag::Error NodeLimitFudgeFactorConstraintFunc(intx value, bool verbose) {
381 if (value < MaxNodeLimit * 2 / 100 || value > MaxNodeLimit * 40 / 100) {
382 CommandLineError::print(verbose,
383 "NodeLimitFudgeFactor must be between 2%% and 40%% "
384 "of MaxNodeLimit (" INTX_FORMAT ")\n",
385 MaxNodeLimit);
386 return Flag::VIOLATES_CONSTRAINT;
387 }
388
389 return Flag::SUCCESS;
390 }
391 #endif // COMPILER2