aplwc/src/lib, branch memory-manager

Put all the code which visits pointers in memory.c behind a macro, so it can easily be reused.

2026-09-01T21:14:43+00:00

FossilOrigin-Name: 1e911fa0ea41797f445fff6f25df36b6c0f07063b5c6e9936cb243294a2d8a0c

Implement "compaction", which moves all non-free chunks towards the beginning of the allocated space, and combines all the free space at the end.

2026-09-01T20:45:23+00:00

FossilOrigin-Name: c757f65164e1aebf38bc3e9ea8abe4b9f98b183cec7cfbeed0175f65c72f7ca5

First step at garbage collection

2026-09-01T19:10:55+00:00

We now visit all objects and change the tag of those which are unreachable, to CHUNK_TAG_FREE.
Next step will be to implement compaction to combine all free chunks at the end of the memory
space.

FossilOrigin-Name: f8641c857b5d430f45d7c1f36fb00866659a5ea78f36ee0535c9166060ea0e19

A little bit of testing

2026-08-31T20:21:54+00:00

FossilOrigin-Name: 70deba994bb488d4aa5df36577d1e184d6651a3edeff042e9666f54589cdc6f9

Fix problems in release builds

2026-08-31T20:04:50+00:00

FossilOrigin-Name: 98227d25674f373968f51df0dcdccf3cf14d646a13e56a9229103d1aeb3ad73d

Remove some unneeded references to struct aplwc * in various structures.

2026-08-31T19:49:48+00:00

FossilOrigin-Name: 3b4b7806320d604b0df3654896cfe5d885f116d893ae15cfb3422d6d2de7193c

The objects returned to the user are now integer-based references,

2026-08-31T19:44:56+00:00

not actual pointers. This means the aplwc internals can update those
pointers without the user noticing.

FossilOrigin-Name: 654c7d0ec85da295a7fb6ed381500410686b280f342fa81a30481f5e9a20c58a

Still a lot to be done, but I'm going to bed.

2026-08-30T20:52:43+00:00

Two remaining big issues:
* aplwc (the parameter passed "everywhere") - should it move or not?
* values returned from the public API should not move.

FossilOrigin-Name: 31ab3154b8f3d5ac167218496e9e204324bf0ac9d36b7bada8fe2a6c8f93d51c

Remove a lot of functions for manually freeing memory (they were not implemented)

2026-08-30T14:46:38+00:00

FossilOrigin-Name: 693765728e62a74a0ab15d657f7d1dd83702a9371fb042dafe6250f84a252959

Let the memory allocation code set the last_error to APLWC_OUT_OF_MEMORY, instead of the callers

2026-08-30T14:25:56+00:00

FossilOrigin-Name: 46c74e207a84e861636dbfebc4ba8bb9e7b17401dfd2c4fb9bdeae0fa98fd530