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src/share/vm/runtime/commandLineFlagConstraintsGC.cpp
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rev 8851 : [mq]: webrev.00
rev 8852 : [mq]: webrev.01
rev 8853 : [mq]: webrev.02
rev 8854 : [mq]: webrev.03
@@ -21,29 +21,89 @@
* questions.
*
*/
#include "precompiled.hpp"
+#include "gc/shared/collectedHeap.hpp"
+#include "gc/shared/collectorPolicy.hpp"
+#include "gc/shared/threadLocalAllocBuffer.hpp"
#include "runtime/arguments.hpp"
#include "runtime/commandLineFlagConstraintsGC.hpp"
#include "runtime/commandLineFlagRangeList.hpp"
#include "runtime/globals.hpp"
+#include "runtime/globals_extension.hpp"
#include "utilities/defaultStream.hpp"
#if INCLUDE_ALL_GCS
#include "gc/g1/g1_globals.hpp"
#include "gc/g1/heapRegionBounds.inline.hpp"
-#include "gc/parallel/parallelScavengeHeap.hpp"
#include "gc/shared/plab.hpp"
#endif // INCLUDE_ALL_GCS
#ifdef COMPILER1
#include "c1/c1_globals.hpp"
#endif // COMPILER1
#ifdef COMPILER2
#include "opto/c2_globals.hpp"
#endif // COMPILER2
+#if INCLUDE_ALL_GCS
+static Flag::Error ParallelGCThreadsAndCMSWorkQueueDrainThreshold(uint threads, uintx threshold, bool verbose) {
+ // CMSWorkQueueDrainThreshold is verified to be less than max_juint
+ if (UseConcMarkSweepGC && (threads > (uint)(max_jint / (uint)threshold))) {
+ CommandLineError::print(verbose,
+ "ParallelGCThreads (" UINT32_FORMAT ") or CMSWorkQueueDrainThreshold ("
+ UINTX_FORMAT ") is too large\n",
+ threads, threshold);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ return Flag::SUCCESS;
+}
+#endif
+
+// As ParallelGCThreads differs among GC modes, we need constraint function.
+Flag::Error ParallelGCThreadsConstraintFunc(uint value, bool verbose) {
+ Flag::Error status = Flag::SUCCESS;
+
+#if INCLUDE_ALL_GCS
+ // Parallel GC passes ParallelGCThreads when creating GrowableArray as 'int' type parameter.
+ // So can't exceed with "max_jint"
+ if (UseParallelGC && (value > (uint)max_jint)) {
+ CommandLineError::print(verbose,
+ "ParallelGCThreads (" UINT32_FORMAT ") must be "
+ "less than or equal to " UINT32_FORMAT " for Parallel GC\n",
+ value, max_jint);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ // To avoid overflow at ParScanClosure::do_oop_work.
+ if (UseConcMarkSweepGC && (value > (max_jint / 10))) {
+ CommandLineError::print(verbose,
+ "ParallelGCThreads (" UINT32_FORMAT ") must be "
+ "less than or equal to " UINT32_FORMAT " for CMS GC\n",
+ value, (max_jint / 10));
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ status = ParallelGCThreadsAndCMSWorkQueueDrainThreshold(value, CMSWorkQueueDrainThreshold, verbose);
+#endif
+ return status;
+}
+
+// As ConcGCThreads should be smaller than ParallelGCThreads,
+// we need constraint function.
+Flag::Error ConcGCThreadsConstraintFunc(uint value, bool verbose) {
+#if INCLUDE_ALL_GCS
+ // CMS and G1 GCs use ConcGCThreads.
+ if ((UseConcMarkSweepGC || UseG1GC) && (value > ParallelGCThreads)) {
+ CommandLineError::print(verbose,
+ "ConcGCThreads (" UINT32_FORMAT ") must be "
+ "less than or equal to ParallelGCThreads (" UINT32_FORMAT ")\n",
+ value, ParallelGCThreads);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+#endif
+ return Flag::SUCCESS;
+}
+
static Flag::Error MinPLABSizeBounds(const char* name, size_t value, bool verbose) {
#if INCLUDE_ALL_GCS
if ((UseConcMarkSweepGC || UseG1GC) && (value < PLAB::min_size())) {
CommandLineError::print(verbose,
"%s (" SIZE_FORMAT ") must be "
@@ -58,29 +118,53 @@
static Flag::Error MaxPLABSizeBounds(const char* name, size_t value, bool verbose) {
#if INCLUDE_ALL_GCS
if ((UseConcMarkSweepGC || UseG1GC) && (value > PLAB::max_size())) {
CommandLineError::print(verbose,
"%s (" SIZE_FORMAT ") must be "
- "less than ergonomic PLAB maximum size (" SIZE_FORMAT ")\n",
+ "less than or equal to ergonomic PLAB maximum size (" SIZE_FORMAT ")\n",
name, value, PLAB::min_size());
return Flag::VIOLATES_CONSTRAINT;
}
#endif // INCLUDE_ALL_GCS
return Flag::SUCCESS;
}
static Flag::Error MinMaxPLABSizeBounds(const char* name, size_t value, bool verbose) {
- if (MinPLABSizeBounds(name, value, verbose) == Flag::SUCCESS) {
+ Flag::Error status = MinPLABSizeBounds(name, value, verbose);
+
+ if (status == Flag::SUCCESS) {
return MaxPLABSizeBounds(name, value, verbose);
}
- return Flag::VIOLATES_CONSTRAINT;
+ return status;
}
Flag::Error YoungPLABSizeConstraintFunc(size_t value, bool verbose) {
return MinMaxPLABSizeBounds("YoungPLABSize", value, verbose);
}
+Flag::Error OldPLABSizeConstraintFunc(size_t value, bool verbose) {
+ Flag::Error status = Flag::SUCCESS;
+
+#if INCLUDE_ALL_GCS
+ if (UseConcMarkSweepGC) {
+ if (value == 0) {
+ CommandLineError::print(verbose,
+ "OldPLABSize (" SIZE_FORMAT ") must be greater than 0",
+ value);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ // For CMS, OldPLABSize is the number of free blocks of a given size that are used when
+ // replenishing the local per-worker free list caches.
+ // For more details, please refer to Arguments::set_cms_and_parnew_gc_flags().
+ status = MaxPLABSizeBounds("OldPLABSize", value, verbose);
+ } else {
+ status = MinMaxPLABSizeBounds("OldPLABSize", value, verbose);
+ }
+#endif
+ return status;
+}
+
Flag::Error MinHeapFreeRatioConstraintFunc(uintx value, bool verbose) {
if (value > MaxHeapFreeRatio) {
CommandLineError::print(verbose,
"MinHeapFreeRatio (" UINTX_FORMAT ") must be "
"less than or equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n",
@@ -101,10 +185,26 @@
} else {
return Flag::SUCCESS;
}
}
+static Flag::Error CheckMaxHeapSizeAndSoftRefLRUPolicyMSPerMB(size_t maxHeap, intx softRef, bool verbose) {
+ if ((softRef > 0) && ((maxHeap / M) > (max_uintx / softRef))) {
+ CommandLineError::print(verbose,
+ "MaxHeapSize (" SIZE_FORMAT ") or SoftRefLRUPolicyMSPerMB "
+ "(" INTX_FORMAT ") is too large\n",
+ maxHeap, softRef);
+ return Flag::VIOLATES_CONSTRAINT;
+ } else {
+ return Flag::SUCCESS;
+ }
+}
+
+Flag::Error SoftRefLRUPolicyMSPerMBConstraintFunc(intx value, bool verbose) {
+ return CheckMaxHeapSizeAndSoftRefLRUPolicyMSPerMB(MaxHeapSize, value, verbose);
+}
+
Flag::Error MinMetaspaceFreeRatioConstraintFunc(uintx value, bool verbose) {
if (value > MaxMetaspaceFreeRatio) {
CommandLineError::print(verbose,
"MinMetaspaceFreeRatio (" UINTX_FORMAT ") must be "
"less than or equal to MaxMetaspaceFreeRatio (" UINTX_FORMAT ")\n",
@@ -125,49 +225,115 @@
} else {
return Flag::SUCCESS;
}
}
-// GC workaround for "-XX:+UseConcMarkSweepGC"
-// which sets InitialTenuringThreshold to 7 but leaves MaxTenuringThreshold remaining at 6
-// and therefore would invalidate the constraint
-#define UseConcMarkSweepGCWorkaroundIfNeeded(initial, max) { \
- if ((initial == 7) && (max == 6)) { \
- return Flag::SUCCESS; \
- } \
-}
-
Flag::Error InitialTenuringThresholdConstraintFunc(uintx value, bool verbose) {
- UseConcMarkSweepGCWorkaroundIfNeeded(value, MaxTenuringThreshold);
-
- if (value > MaxTenuringThreshold) {
+#if INCLUDE_ALL_GCS
+ // InitialTenuringThreshold is only used for ParallelGC.
+ if (UseParallelGC && (value > MaxTenuringThreshold)) {
CommandLineError::print(verbose,
"InitialTenuringThreshold (" UINTX_FORMAT ") must be "
"less than or equal to MaxTenuringThreshold (" UINTX_FORMAT ")\n",
value, MaxTenuringThreshold);
return Flag::VIOLATES_CONSTRAINT;
- } else {
- return Flag::SUCCESS;
}
+#endif
+ return Flag::SUCCESS;
}
Flag::Error MaxTenuringThresholdConstraintFunc(uintx value, bool verbose) {
- UseConcMarkSweepGCWorkaroundIfNeeded(InitialTenuringThreshold, value);
-
- if (value < InitialTenuringThreshold) {
+#if INCLUDE_ALL_GCS
+ // As only ParallelGC uses InitialTenuringThreshold,
+ // we don't need to compare InitialTenuringThreshold with MaxTenuringThreshold.
+ if (UseParallelGC && (value < InitialTenuringThreshold)) {
CommandLineError::print(verbose,
"MaxTenuringThreshold (" UINTX_FORMAT ") must be "
"greater than or equal to InitialTenuringThreshold (" UINTX_FORMAT ")\n",
value, InitialTenuringThreshold);
return Flag::VIOLATES_CONSTRAINT;
+ }
+#endif
+
+ // MaxTenuringThreshold=0 means NeverTenure=false && AlwaysTenure=true
+ if ((value == 0) && (NeverTenure || !AlwaysTenure)) {
+ CommandLineError::print(verbose,
+ "MaxTenuringThreshold (0) should match to NeverTenure=false "
+ "&& AlwaysTenure=true. But we have NeverTenure=%s "
+ "AlwaysTenure=%s\n",
+ NeverTenure ? "true" : "false",
+ AlwaysTenure ? "true" : "false");
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ return Flag::SUCCESS;
+}
+
+#if INCLUDE_ALL_GCS
+Flag::Error G1RSetRegionEntriesConstraintFunc(intx value, bool verbose) {
+ if (!UseG1GC) return Flag::SUCCESS;
+
+ // Default value of G1RSetRegionEntries=0 means will be set ergonomically.
+ // Minimum value is 1.
+ if (FLAG_IS_CMDLINE(G1RSetRegionEntries) && (value < 1)) {
+ CommandLineError::print(verbose,
+ "G1RSetRegionEntries (" INTX_FORMAT ") must be "
+ "greater than or equal to 1\n",
+ value);
+ return Flag::VIOLATES_CONSTRAINT;
+ } else {
+ return Flag::SUCCESS;
+ }
+}
+
+Flag::Error G1RSetSparseRegionEntriesConstraintFunc(intx value, bool verbose) {
+ if (!UseG1GC) return Flag::SUCCESS;
+
+ // Default value of G1RSetSparseRegionEntries=0 means will be set ergonomically.
+ // Minimum value is 1.
+ if (FLAG_IS_CMDLINE(G1RSetSparseRegionEntries) && (value < 1)) {
+ CommandLineError::print(verbose,
+ "G1RSetSparseRegionEntries (" INTX_FORMAT ") must be "
+ "greater than or equal to 1\n",
+ value);
+ return Flag::VIOLATES_CONSTRAINT;
+ } else {
+ return Flag::SUCCESS;
+ }
+}
+
+Flag::Error G1YoungSurvRateNumRegionsSummaryConstraintFunc(intx value, bool verbose) {
+ if (!UseG1GC) return Flag::SUCCESS;
+
+ if (value > (intx)HeapRegionBounds::target_number()) {
+ CommandLineError::print(verbose,
+ "G1YoungSurvRateNumRegionsSummary (" INTX_FORMAT ") must be "
+ "less than or equal to region amount (" SIZE_FORMAT ")\n",
+ value, HeapRegionBounds::target_number());
+ return Flag::VIOLATES_CONSTRAINT;
+ } else {
+ return Flag::SUCCESS;
+ }
+}
+
+Flag::Error G1HeapRegionSizeConstraintFunc(size_t value, bool verbose) {
+ if (!UseG1GC) return Flag::SUCCESS;
+
+ // Default value of G1HeapRegionSize=0 means will be set ergonomically.
+ if (FLAG_IS_CMDLINE(G1HeapRegionSize) && (value < HeapRegionBounds::min_size())) {
+ CommandLineError::print(verbose,
+ "G1HeapRegionSize (" SIZE_FORMAT ") must be "
+ "greater than or equal to ergonomic heap region minimum size\n",
+ value);
+ return Flag::VIOLATES_CONSTRAINT;
} else {
return Flag::SUCCESS;
}
}
-#if INCLUDE_ALL_GCS
Flag::Error G1NewSizePercentConstraintFunc(uintx value, bool verbose) {
+ if (!UseG1GC) return Flag::SUCCESS;
+
if (value > G1MaxNewSizePercent) {
CommandLineError::print(verbose,
"G1NewSizePercent (" UINTX_FORMAT ") must be "
"less than or equal to G1MaxNewSizePercent (" UINTX_FORMAT ")\n",
value, G1MaxNewSizePercent);
@@ -176,53 +342,285 @@
return Flag::SUCCESS;
}
}
Flag::Error G1MaxNewSizePercentConstraintFunc(uintx value, bool verbose) {
+ if (!UseG1GC) return Flag::SUCCESS;
+
if (value < G1NewSizePercent) {
CommandLineError::print(verbose,
"G1MaxNewSizePercent (" UINTX_FORMAT ") must be "
"greater than or equal to G1NewSizePercent (" UINTX_FORMAT ")\n",
value, G1NewSizePercent);
return Flag::VIOLATES_CONSTRAINT;
} else {
return Flag::SUCCESS;
}
}
-
#endif // INCLUDE_ALL_GCS
+Flag::Error ParGCStridesPerThreadConstraintFunc(uintx value, bool verbose) {
+#if INCLUDE_ALL_GCS
+ if (UseConcMarkSweepGC && (value > ((uintx)max_jint / (uintx)ParallelGCThreads))) {
+ CommandLineError::print(verbose,
+ "ParGCStridesPerThread (" UINTX_FORMAT ") must be "
+ "less than or equal to ergonomic maximum (" UINTX_FORMAT ")\n",
+ value, ((uintx)max_jint / (uintx)ParallelGCThreads));
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+#endif
+ return Flag::SUCCESS;
+}
+
Flag::Error CMSOldPLABMinConstraintFunc(size_t value, bool verbose) {
+ Flag::Error status = Flag::SUCCESS;
+
+#if INCLUDE_ALL_GCS
+ if (UseConcMarkSweepGC) {
if (value > CMSOldPLABMax) {
CommandLineError::print(verbose,
"CMSOldPLABMin (" SIZE_FORMAT ") must be "
"less than or equal to CMSOldPLABMax (" SIZE_FORMAT ")\n",
value, CMSOldPLABMax);
return Flag::VIOLATES_CONSTRAINT;
+ }
+ status = MaxPLABSizeBounds("CMSOldPLABMin", value, verbose);
+ }
+#endif
+ return status;
+}
+
+Flag::Error CMSOldPLABMaxConstraintFunc(size_t value, bool verbose) {
+ Flag::Error status = Flag::SUCCESS;
+
+#if INCLUDE_ALL_GCS
+ if (UseConcMarkSweepGC) {
+ status = MaxPLABSizeBounds("CMSOldPLABMax", value, verbose);
+ }
+#endif
+ return status;
+}
+
+Flag::Error MarkStackSizeConstraintFunc(size_t value, bool verbose) {
+ if (value > MarkStackSizeMax) {
+ CommandLineError::print(verbose,
+ "MarkStackSize (" SIZE_FORMAT ") must be "
+ "less than or equal to MarkStackSizeMax (" SIZE_FORMAT ")\n",
+ value, MarkStackSizeMax);
+ return Flag::VIOLATES_CONSTRAINT;
} else {
return Flag::SUCCESS;
}
}
Flag::Error CMSPrecleanDenominatorConstraintFunc(uintx value, bool verbose) {
- if (value <= CMSPrecleanNumerator) {
+#if INCLUDE_ALL_GCS
+ if (UseConcMarkSweepGC && (value <= CMSPrecleanNumerator)) {
CommandLineError::print(verbose,
"CMSPrecleanDenominator (" UINTX_FORMAT ") must be "
"strickly greater than CMSPrecleanNumerator (" UINTX_FORMAT ")\n",
value, CMSPrecleanNumerator);
return Flag::VIOLATES_CONSTRAINT;
- } else {
- return Flag::SUCCESS;
}
+#endif
+ return Flag::SUCCESS;
}
Flag::Error CMSPrecleanNumeratorConstraintFunc(uintx value, bool verbose) {
- if (value > (CMSPrecleanDenominator - 1)) {
+#if INCLUDE_ALL_GCS
+ if (UseConcMarkSweepGC && (value >= CMSPrecleanDenominator)) {
CommandLineError::print(verbose,
"CMSPrecleanNumerator (" UINTX_FORMAT ") must be "
- "less than or equal to CMSPrecleanDenominator - 1 (" UINTX_FORMAT ")\n",
- value, CMSPrecleanDenominator - 1);
+ "less than CMSPrecleanDenominator (" UINTX_FORMAT ")\n",
+ value, CMSPrecleanDenominator);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+#endif
+ return Flag::SUCCESS;
+}
+
+Flag::Error CMSWorkQueueDrainThresholdConstraintFunc(uintx value, bool verbose) {
+#if INCLUDE_ALL_GCS
+ if (UseConcMarkSweepGC) {
+ return ParallelGCThreadsAndCMSWorkQueueDrainThreshold(ParallelGCThreads, value, verbose);
+ }
+#endif
+ return Flag::SUCCESS;
+}
+
+Flag::Error MaxGCPauseMillisConstraintFunc(uintx value, bool verbose) {
+#if INCLUDE_ALL_GCS
+ if (UseG1GC && FLAG_IS_CMDLINE(MaxGCPauseMillis) && (value >= GCPauseIntervalMillis)) {
+ CommandLineError::print(verbose,
+ "MaxGCPauseMillis (" UINTX_FORMAT ") must be "
+ "less than GCPauseIntervalMillis (" UINTX_FORMAT ")\n",
+ value, GCPauseIntervalMillis);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+#endif
+
+ return Flag::SUCCESS;
+}
+
+Flag::Error GCPauseIntervalMillisConstraintFunc(uintx value, bool verbose) {
+#if INCLUDE_ALL_GCS
+ if (UseG1GC) {
+ if (FLAG_IS_CMDLINE(GCPauseIntervalMillis)) {
+ if (value < 1) {
+ CommandLineError::print(verbose,
+ "GCPauseIntervalMillis (" UINTX_FORMAT ") must be "
+ "greater than or equal to 1\n",
+ value);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ if (value <= MaxGCPauseMillis) {
+ CommandLineError::print(verbose,
+ "GCPauseIntervalMillis (" UINTX_FORMAT ") must be "
+ "greater than MaxGCPauseMillis (" UINTX_FORMAT ")\n",
+ value, MaxGCPauseMillis);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ }
+ }
+#endif
+ return Flag::SUCCESS;
+}
+
+Flag::Error InitialBootClassLoaderMetaspaceSizeConstraintFunc(size_t value, bool verbose) {
+ size_t aligned_max = (size_t)align_size_down(max_uintx/2, Metaspace::reserve_alignment_words());
+ if (value > aligned_max) {
+ CommandLineError::print(verbose,
+ "InitialBootClassLoaderMetaspaceSize (" SIZE_FORMAT ") must be "
+ "less than or equal to aligned maximum value (" SIZE_FORMAT ")\n",
+ value, aligned_max);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ return Flag::SUCCESS;
+}
+
+static Flag::Error MaxSizeForHeapAlignment(const char* name, size_t value, bool verbose) {
+ // For G1 GC, we don't know until G1CollectorPolicy is created.
+ size_t heap_alignment;
+
+#if INCLUDE_ALL_GCS
+ if (UseG1GC) {
+ heap_alignment = HeapRegionBounds::max_size();
+ } else
+#endif
+ {
+ heap_alignment = CollectorPolicy::compute_heap_alignment();
+ }
+
+ // Not to overflow 'align_size_up(value, _heap_alignment) used from CollectorPolicy::initialize_flags()'.
+ size_t aligned_max = ((max_uintx - heap_alignment) & ~(heap_alignment-1));
+ if (value > aligned_max) {
+ CommandLineError::print(verbose,
+ "%s (" SIZE_FORMAT ") must be "
+ "less than or equal to aligned maximum value (" SIZE_FORMAT ")\n",
+ name, value, aligned_max);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ return Flag::SUCCESS;
+}
+
+Flag::Error InitialHeapSizeConstraintFunc(size_t value, bool verbose) {
+ return MaxSizeForHeapAlignment("InitialHeapSize", value, verbose);
+}
+
+Flag::Error MaxHeapSizeConstraintFunc(size_t value, bool verbose) {
+ Flag::Error status = MaxSizeForHeapAlignment("MaxHeapSize", value, verbose);
+
+ if (status == Flag::SUCCESS) {
+ status = CheckMaxHeapSizeAndSoftRefLRUPolicyMSPerMB(value, SoftRefLRUPolicyMSPerMB, verbose);
+ }
+ return status;
+}
+
+Flag::Error NewSizeConstraintFunc(size_t value, bool verbose) {
+#ifdef _LP64
+#if INCLUDE_ALL_GCS
+ // Overflow would happen for uint type variable of YoungGenSizer::_min_desired_young_length
+ // when the value to be assigned exceeds uint range.
+ // i.e. result of '(uint)(NewSize / region size(1~32MB))'
+ // So maximum of NewSize should be 'max_juint * 1M'
+ if (UseG1GC && (value > (max_juint * 1 * M))) {
+ CommandLineError::print(verbose,
+ "NewSize (" SIZE_FORMAT ") must be less than ergonomic maximum value\n",
+ value);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+#endif // INCLUDE_ALL_GCS
+#endif // _LP64
+ return Flag::SUCCESS;
+}
+
+Flag::Error MinTLABSizeConstraintFunc(size_t value, bool verbose) {
+ // At least, alignment reserve area is needed.
+ if (value < ThreadLocalAllocBuffer::alignment_reserve_in_bytes()) {
+ CommandLineError::print(verbose,
+ "MinTLABSize (" SIZE_FORMAT ") must be "
+ "greater than or equal to reserved area in TLAB (" SIZE_FORMAT ")\n",
+ value, ThreadLocalAllocBuffer::alignment_reserve_in_bytes());
+ return Flag::VIOLATES_CONSTRAINT;
+ } else {
+ return Flag::SUCCESS;
+ }
+}
+
+Flag::Error TLABSizeConstraintFunc(size_t value, bool verbose) {
+ // Skip for default value of zero which means set ergonomically.
+ if (FLAG_IS_CMDLINE(TLABSize)) {
+ if (value < MinTLABSize) {
+ CommandLineError::print(verbose,
+ "TLABSize (" SIZE_FORMAT ") must be "
+ "greater than or equal to MinTLABSize (" SIZE_FORMAT ")\n",
+ value, MinTLABSize);
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ if (value > (ThreadLocalAllocBuffer::max_size() * HeapWordSize)) {
+ CommandLineError::print(verbose,
+ "TLABSize (" SIZE_FORMAT ") must be "
+ "less than or equal to ergonomic TLAB maximum size (" SIZE_FORMAT ")\n",
+ value, (ThreadLocalAllocBuffer::max_size() * HeapWordSize));
+ return Flag::VIOLATES_CONSTRAINT;
+ }
+ }
+ return Flag::SUCCESS;
+}
+
+Flag::Error SurvivorRatioConstraintFunc(uintx value, bool verbose) {
+ if (FLAG_IS_CMDLINE(SurvivorRatio) &&
+ (value > (MaxHeapSize / Universe::heap()->collector_policy()->space_alignment()))) {
+ CommandLineError::print(verbose,
+ "SurvivorRatio (" UINTX_FORMAT ") must be "
+ "less than or equal to ergonomic SurvivorRatio maximum (" SIZE_FORMAT ")\n",
+ value,
+ (MaxHeapSize / Universe::heap()->collector_policy()->space_alignment()));
+ return Flag::VIOLATES_CONSTRAINT;
+ } else {
+ return Flag::SUCCESS;
+ }
+}
+
+Flag::Error MetaspaceSizeConstraintFunc(size_t value, bool verbose) {
+ if (value > MaxMetaspaceSize) {
+ CommandLineError::print(verbose,
+ "MetaspaceSize (" SIZE_FORMAT ") must be "
+ "less than or equal to MaxMetaspaceSize (" SIZE_FORMAT ")\n",
+ value, MaxMetaspaceSize);
+ return Flag::VIOLATES_CONSTRAINT;
+ } else {
+ return Flag::SUCCESS;
+ }
+}
+
+Flag::Error MaxMetaspaceSizeConstraintFunc(size_t value, bool verbose) {
+ if (value < MetaspaceSize) {
+ CommandLineError::print(verbose,
+ "MaxMetaspaceSize (" SIZE_FORMAT ") must be "
+ "greater than or equal to MetaspaceSize (" SIZE_FORMAT ")\n",
+ value, MaxMetaspaceSize);
return Flag::VIOLATES_CONSTRAINT;
} else {
return Flag::SUCCESS;
}
}
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