src/java.base/share/classes/java/lang/StackFrameInfo.java

*** 27,42 ****
  import jdk.internal.misc.JavaLangInvokeAccess;
  import jdk.internal.misc.SharedSecrets;
  
  import static java.lang.StackWalker.Option.*;
  import java.lang.StackWalker.StackFrame;
- import java.lang.reflect.Module;
- import java.util.Optional;
- import java.util.OptionalInt;
  
  class StackFrameInfo implements StackFrame {
!     private final static JavaLangInvokeAccess jlInvokeAccess =
          SharedSecrets.getJavaLangInvokeAccess();
  
      // Footprint improvement: MemberName::clazz can replace
      // StackFrameInfo::declaringClass.
  
--- 27,39 ----
  import jdk.internal.misc.JavaLangInvokeAccess;
  import jdk.internal.misc.SharedSecrets;
  
  import static java.lang.StackWalker.Option.*;
  import java.lang.StackWalker.StackFrame;
  
  class StackFrameInfo implements StackFrame {
!     private final static JavaLangInvokeAccess JLIA =
          SharedSecrets.getJavaLangInvokeAccess();
  
      // Footprint improvement: MemberName::clazz can replace
      // StackFrameInfo::declaringClass.
  
*** 52,62 ****
       */
      StackFrameInfo(StackWalker walker) {
          this.walker = walker;
          this.declaringClass = null;
          this.bci = -1;
!         this.memberName = jlInvokeAccess.newMemberName();
      }
  
      @Override
      public String getClassName() {
          return declaringClass.getName();
--- 49,59 ----
       */
      StackFrameInfo(StackWalker walker) {
          this.walker = walker;
          this.declaringClass = null;
          this.bci = -1;
!         this.memberName = JLIA.newMemberName();
      }
  
      @Override
      public String getClassName() {
          return declaringClass.getName();
*** 68,96 ****
          return declaringClass;
      }
  
      @Override
      public String getMethodName() {
!         return jlInvokeAccess.getName(memberName);
!     }
! 
!     @Override
!     public final Optional<String> getFileName() {
!         StackTraceElement ste = toStackTraceElement();
!         return ste.getFileName() != null ? Optional.of(ste.getFileName()) : Optional.empty();
!     }
! 
!     @Override
!     public final OptionalInt getLineNumber() {
!         StackTraceElement ste = toStackTraceElement();
!         return ste.getLineNumber() > 0 ? OptionalInt.of(ste.getLineNumber()) : OptionalInt.empty();
      }
  
      @Override
      public final boolean isNativeMethod() {
!         StackTraceElement ste = toStackTraceElement();
!         return ste.isNativeMethod();
      }
  
      @Override
      public String toString() {
          StackTraceElement ste = toStackTraceElement();
--- 65,80 ----
          return declaringClass;
      }
  
      @Override
      public String getMethodName() {
!         return JLIA.getName(memberName);
      }
  
      @Override
      public final boolean isNativeMethod() {
!         return JLIA.isNative(memberName);
      }
  
      @Override
      public String toString() {
          StackTraceElement ste = toStackTraceElement();