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* Copyright (c) 2002 by Michael J. Roberts. All Rights Reserved.
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* Please see the accompanying license file, LICENSE.TXT, for information
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* on using and copying this software.
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vmpoolsl.h - pool manager selector definitions
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This header makes some definitions that vary according to which type of
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memory pool manager is selected. This can be included without including
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the entire memory pool subsystem header.
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As of this writing, only the all-in-memory pool manager is supported.
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The swapping pool manager is no longer supported and is not planned to be
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supported in the future. However, we are retaining the selection mechanism
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for now, in the event that we want to restore the swapping pool, or add
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other pool configuration options, in the future (which seems unlikely, but
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08/17/02 MJRoberts - Creation
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/* ------------------------------------------------------------------------ */
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* Conditionally include code needed for the swapping pool manager. When
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* the swapping pool manager is used, code that translates memory addresses
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* must be mindful of the fact that translating one memory address can
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* render previously-translated addresses invalid. Such code is
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* unnecessary with non-swapping pool managers.
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* To include the swapping pool manager in the build, you must #define
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* VM_SWAPPING_POOL globally for all modules - normally, this should be
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* done in the CFLAGS in the makefile, or with the equivalent local
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* convention, so that every module has the symbol defined.
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/* ------------------------------------------------------------------------ */
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#ifdef VM_SWAPPING_POOL
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* swapping mode - include swapping-specific code
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#define VM_IF_SWAPPING_POOL(x) x
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/* the final pool manager subclass - use the swapping pool class */
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#define CVmPool_CLASS CVmPoolSwap
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/* ------------------------------------------------------------------------ */
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#else /* VM_SWAPPING_POOL */
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* non-swapping mode - omit swapping-specific code
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#define VM_IF_SWAPPING_POOL(x)
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* The non-swapping pool comes in two varieties. Select the FLAT or PAGED
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* pool, as desired. The FLAT pool is slightly faster, but it doesn't have
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* any dynamic memory capabilities, which are required for the debugger.
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/* select the non-swapped FLAT pool */
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#define CVmPool_CLASS CVmPoolFlat
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#else /* VM_FLAT_POOL */
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/* select the non-swapped PAGED pool */
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#define CVmPool_CLASS CVmPoolInMem
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#endif /* VM_FLAT_POOL */
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#endif /* VM_SWAPPING_POOL */
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#endif /* VMPOOLSL_H */
added
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tads/tads3/vmpoolsl.h
