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https://git.code.sf.net/p/quake/quakeforge
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27 lines
1.2 KiB
Text
27 lines
1.2 KiB
Text
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Qmalloc/Qfree/Qrealloc implimentation
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- hybrid, has seperate handling for large and small items
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- blocks allocated via mmap
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- block size is configurable, probably between 1 and 8 megs
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- handle small and large items differently, either using an exact
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cutoff size, or half/a third of the block size
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- large items get their own block, possibly cached
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- small items allocated using a first-fit coalescing algorythm (?)
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- callback for when allocation not enough memory is available, return
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NULL if callback returns false, trying again if it returns true.
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I'm not sure about how distinct small and large items should be, or
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when blocks should be unmapped.
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Cache_Alloc/Cache_Free, Cache_Lock/Cache_Unlock
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- opaque cache_user_t used to store pointers to the cache data
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- cache data may be move or removed
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- Cache_Lock prevents data from being move or removed, Cache_Unlock
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allows it again.
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- Cache_Lock can be called multiple times, Cache_Unlock must be called
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an equal number of times to unlock it
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- Has a function to attempt to free up space, usable in a callback for
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Qmalloc, such that Qmalloc can succeed
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- it may use Qmalloc as a backend, or it may use mmap on it's own.
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I'm undecided.
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