Delete all references to ExtentLocalCacheSize.

Author: theRealAph

src/hotspot/share/prims/jvm.cpp

@@ -3181,19 +3181,12 @@ JVM_END
 
 JVM_ENTRY(jobject, JVM_ExtentLocalCache(JNIEnv* env, jclass threadClass))
   oop theCache = thread->extentLocalCache();
-  if (theCache) {
-    arrayOop objs = arrayOop(theCache);
-    assert(objs->length() == ExtentLocalCacheSize * 2, "wrong length");
-  }
   return JNIHandles::make_local(THREAD, theCache);
 JVM_END
 
 JVM_ENTRY(void, JVM_SetExtentLocalCache(JNIEnv* env, jclass threadClass,
                                        jobject theCache))
   arrayOop objs = arrayOop(JNIHandles::resolve(theCache));
-  if (objs != NULL) {
-    assert(objs->length() == ExtentLocalCacheSize * 2, "wrong length");
-  }
   thread->set_extentLocalCache(objs);
 JVM_END
 

src/hotspot/share/runtime/flags/jvmFlagConstraintsRuntime.cpp

@@ -92,18 +92,6 @@ JVMFlag::Error VMPageSizeConstraintFunc(uintx value, bool verbose) {
   return JVMFlag::SUCCESS;
 }
 
-JVMFlag::Error ExtentLocalCacheSizeConstraintFunc(intx value, bool verbose) {
-  if (!is_power_of_2(value)) {
-    JVMFlag::printError(verbose,
-                        "ExtentLocalCacheSize (" INTX_FORMAT ") must be "
-                        "power of 2\n",
-                        value);
-    return JVMFlag::VIOLATES_CONSTRAINT;
-  }
-
-  return JVMFlag::SUCCESS;
-}
-
 JVMFlag::Error NUMAInterleaveGranularityConstraintFunc(size_t value, bool verbose) {
   size_t min = os::vm_allocation_granularity();
   size_t max = NOT_LP64(2*G) LP64_ONLY(8192*G);

src/hotspot/share/runtime/flags/jvmFlagConstraintsRuntime.hpp

@@ -37,7 +37,6 @@
   f(intx,   ObjectAlignmentInBytesConstraintFunc)     \
   f(intx,   ContendedPaddingWidthConstraintFunc)      \
   f(intx,   PerfDataSamplingIntervalFunc)             \
-  f(intx,   ExtentLocalCacheSizeConstraintFunc)        \
   f(uintx,  VMPageSizeConstraintFunc)                 \
   f(size_t, NUMAInterleaveGranularityConstraintFunc)
 

src/hotspot/share/runtime/globals.hpp

@@ -2015,11 +2015,6 @@ const intx ObjectAlignmentInBytes = 8;
   develop(bool, UseContinuationFastPath, true,                              \
           "Use fast-path frame walking in continuations")                   \
                                                                             \
-  product(intx, ExtentLocalCacheSize, 16,                                   \
-          "Size of the cache for scoped values")                            \
-           range(0, max_intx)                                               \
-           constraint(ExtentLocalCacheSizeConstraintFunc, AtParse)          \
-                                                                            \
   develop(int, VerifyMetaspaceInterval, DEBUG_ONLY(500) NOT_DEBUG(0),       \
                "Run periodic metaspace verifications (0 - none, "           \
                "1 - always, >1 every nth interval)")                        \