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refactor(memfile): change mf_trans and mf_hash from ad-hoc hashtable to Map

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Memfile used a private implementation of an open hash table with intrusive collision chains, but there is
no reason to assume the standard khash_t based Map won't work just fine.

Yes, we are taking full ownership and maintenance over memline and memfile.
No one is going to maintain it for us.

Trust the plan.
This commit is contained in:
bfredl
2023-08-25 23:00:29 +02:00
parent e99a3fd25d
commit 87cde88c41
5 changed files with 71 additions and 307 deletions
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19
src/nvim/memline.c
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@@ -3684,22 +3684,19 @@ static long char_to_long(const char *s_in)
/// - 'fileencoding'
void ml_setflags(buf_T *buf)
{
bhdr_T *hp;
ZERO_BL *b0p;
if (!buf->b_ml.ml_mfp) {
return;
}
for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev) {
if (hp->bh_bnum == 0) {
b0p = hp->bh_data;
b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0;
b0p->b0_flags = (char)((b0p->b0_flags & ~B0_FF_MASK) | (uint8_t)(get_fileformat(buf) + 1));
add_b0_fenc(b0p, buf);
hp->bh_flags |= BH_DIRTY;
mf_sync(buf->b_ml.ml_mfp, MFS_ZERO);
break;
}
bhdr_T *hp = pmap_get(int64_t)(&buf->b_ml.ml_mfp->mf_hash, 0);
if (hp) {
b0p = hp->bh_data;
b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0;
b0p->b0_flags = (char)((b0p->b0_flags & ~B0_FF_MASK) | (uint8_t)(get_fileformat(buf) + 1));
add_b0_fenc(b0p, buf);
hp->bh_flags |= BH_DIRTY;
mf_sync(buf->b_ml.ml_mfp, MFS_ZERO);
}
}