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package org.jruby.runtime.ivars;

A lazy mechanism for accessing VariableAccessors for a given variable name.
public final class VariableAccessorField {
    
the name of the variable
    private final String name;
    
    
the accessor cached after it has been allocated
    private volatile VariableAccessor variableAccessor = .;

    
Construct a new VariableAccessorField for the given named variable.

Parameters:
name the name of the variable
    public VariableAccessorField(String name) {
        this. = name;
    }

    
Retrieve the variable accessor for read.

Returns:
the variable accessor appropriate for reads
        return ;
    }

    
Retrieve the variable access for write.

Parameters:
tableMgr the VariableTableManager for which to allocate an accessor, if it has not already been allocated.
Returns:
the variable accessor appropriate for writes.
    }

    
Retrieve or allocate the variable accessor for this variable. This version differs from getVariableAccessorForWrite only in its visibility and the fact that it is synchronized against this field to ensure volatile behavior of the variableAccessor field.

Parameters:
tableMgr the VariableTableManager for which to allocate an accessor, if it has not already been allocated.
Returns:
the variable accessor appropriate for writes
    private synchronized VariableAccessor allocateVariableAccessor(VariableTableManager tableMgr) {
        if ( == .) {
             = tableMgr.allocateVariableAccessor();
        }
        return ;
    }
    
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