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xo-alloc2: work on alloc iteration.

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This commit is contained in:
Roland Conybeare 2025-12-18 11:22:36 -05:00
commit 3184b37460
18 changed files with 220 additions and 29 deletions
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50
xo-alloc2/src/alloc2/DX1CollectorIterator.cpp
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@ -26,19 +26,39 @@ namespace xo {
void
DX1CollectorIterator::normalize() noexcept
{
scope log(XO_DEBUG(false),
xtag("gen_ix", gen_ix_),
xtag("gen_hi", gen_hi_),
xtag("arena_ix.pos", arena_ix_.pos_),
xtag("arena_hi.pos", arena_hi_.pos_));
/* normalize: find lowest generation with non-empty to-space */
if (arena_ix_.pos_ == arena_hi_.pos_) {
log && log(xtag("action", "look-lub-nonempty-gen"));
for (; gen_ix_ < gen_hi_; ++gen_ix_) {
const DArena * arena
= gc_->get_space(role::to_space(), gen_ix_);
if (gen_ix_ < gen_hi_)
++gen_ix_;
arena_ix_ = arena->begin();
arena_hi_ = arena->end();
for (; gen_ix_ < gen_hi_; ++gen_ix_) {
const DArena * arena
= gc_->get_space(role::to_space(), gen_ix_);
if (arena_ix_ != arena_hi_) {
// normalization achieved!
break;
assert(arena);
arena_ix_ = arena->begin();
arena_hi_ = arena->end();
if (arena_ix_ != arena_hi_) {
// normalization achieved!
break;
}
}
log && log(xtag("gen_ix", gen_ix_),
xtag("arena_ix.pos", arena_ix_.pos_),
xtag("arena_hi.pos", arena_hi_.pos_));
} else {
log && log(xtag("action", "noop"));
}
}
@ -81,9 +101,23 @@ namespace xo {
void
DX1CollectorIterator::next() noexcept
{
scope log(XO_DEBUG(false),
xtag("arena_ix.arena", arena_ix_.arena_),
xtag("arena_ix.pos", arena_ix_.pos_),
xtag("arena_hi.arena", arena_hi_.arena_),
xtag("arena_hi.pos", arena_hi_.pos_));
if (arena_ix_ != arena_hi_) {
++arena_ix_;
log && log(xtag("++arena_ix.pos", arena_ix_.pos_));
this->normalize();
log && log(xtag("arena_ix.arena", arena_ix_.arena_),
xtag("arena_ix.pos", arena_ix_.pos_));
} else {
log && log(xtag("action", "arena-at-end"));
}
}
} /*namespace mm*/