LINK Help (linker.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
<shared> Attribute
                                             Up Contents Index Back
─────LINK───────────────────────────────────────────────────────────────────
 
     Attribute:  <shared>
 
     Used by:    CODE, DATA, SEGMENTS
 
     Determines whether all instances of the program can share
     EXECUTEREAD and READWRITE segments. For real-mode Windows only.
 
     Keyword       Purpose
 
     SHARED        Default for DLLs. Specifies that one copy of the
                   segment is loaded and shared among all processes
                   that access the application or DLL. This attribute
                   saves memory and can be used for code that is not
                   self-modifying. Alternate keyword is PURE.
 
     NONSHARED     Default for applications. Specifies that the
                   segment must be loaded separately for each
                   process. Alternate keyword is IMPURE.
 
     The <shared> attribute and the <instance> attribute interact for
     data segments. The <instance> attribute has keywords NONE, SINGLE,
     and MULTIPLE. If DATA SINGLE is specified, LINK assumes SHARED. If
     DATA MULTIPLE is specified, LINK assumes NONSHARED. Similarly,
     DATA SHARED forces SINGLE and DATA NONSHARED forces MULTIPLE.
     See: <instance> Attribute
                                    -♦-