mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-06 13:11:20 +00:00
27 lines
1.2 KiB
Text
27 lines
1.2 KiB
Text
|
Qmalloc/Qfree/Qrealloc implimentation
|
||
|
|
- hybrid, has seperate handling for large and small items
|
||
|
|
- blocks allocated via mmap
|
||
|
|
- block size is configurable, probably between 1 and 8 megs
|
||
|
|
- handle small and large items differently, either using an exact
|
||
|
|
cutoff size, or half/a third of the block size
|
||
|
|
- large items get their own block, possibly cached
|
||
|
|
- small items allocated using a first-fit coalescing algorythm (?)
|
||
|
|
- callback for when allocation not enough memory is available, return
|
||
|
|
NULL if callback returns false, trying again if it returns true.
|
||
|
|
|
||
|
|
I'm not sure about how distinct small and large items should be, or
|
||
|
|
when blocks should be unmapped.
|
||
|
|
|
||
|
|
Cache_Alloc/Cache_Free, Cache_Lock/Cache_Unlock
|
||
|
|
- opaque cache_user_t used to store pointers to the cache data
|
||
|
|
- cache data may be move or removed
|
||
|
|
- Cache_Lock prevents data from being move or removed, Cache_Unlock
|
||
|
|
allows it again.
|
||
|
|
- Cache_Lock can be called multiple times, Cache_Unlock must be called
|
||
|
|
an equal number of times to unlock it
|
||
|
|
- Has a function to attempt to free up space, usable in a callback for
|
||
|
|
Qmalloc, such that Qmalloc can succeed
|
||
|
|
- it may use Qmalloc as a backend, or it may use mmap on it's own.
|
||
|
|
I'm undecided.
|
||
|
|
|