Things that still need attention:
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Things that still need attention:
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* Make implementation changes necessary to allow multiple processes
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* Make implementation changes necessary to allow multiple processes
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to use the mmalloc managed region simultaneously. This requires,
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to use the mmalloc managed region simultaneously. This requires,
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at the minimum, some sort of cooperative locking that ensures that
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at the minimum, some sort of cooperative locking that ensures that
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only one process at a time is changing any of the mmalloc managed
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only one process at a time is changing any of the mmalloc managed
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data structures (its ok for the mmalloc managed data regions to be
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data structures (its ok for the mmalloc managed data regions to be
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changed at any time since we don't care about their contents).
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changed at any time since we don't care about their contents).
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* In order to support multiple processes using the mmalloc managed
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* In order to support multiple processes using the mmalloc managed
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region, the malloc descriptor needs to be broken into two parts,
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region, the malloc descriptor needs to be broken into two parts,
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one part which is specific to the given process and is maintained
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one part which is specific to the given process and is maintained
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separately on a per process basis, and another part which is common
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separately on a per process basis, and another part which is common
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to all processes. As an example, the file descriptor is specific
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to all processes. As an example, the file descriptor is specific
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to a given process, as are the morecore and abortfunc pointers.
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to a given process, as are the morecore and abortfunc pointers.
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However magic[], the version number, the flags field, etc are
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However magic[], the version number, the flags field, etc are
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common to all processes.
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common to all processes.
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