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xo-alloc2: + AllocRange aux class, for alloc_range()

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This commit is contained in:
Roland Conybeare 2025-12-21 15:23:39 -05:00
commit 0a596294b2
8 changed files with 156 additions and 62 deletions
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28
utest/AllocIterator.test.cpp
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@ -169,8 +169,8 @@ namespace xo {
/* arbitrary alloc size */
size_t req_z = 13;
byte * mem = a1o.alloc(req_z);
REQUIRE(arena.error_count_ == 0);
REQUIRE(mem != nullptr);
@ -180,7 +180,6 @@ namespace xo {
REQUIRE(ix.is_valid());
REQUIRE(end_ix.is_valid());
/* arena is non-empty, so begin!=end */
REQUIRE (ix != end_ix);
@ -224,8 +223,8 @@ namespace xo {
auto range = a1o.alloc_range(scratch_mm);
obj<AAllocIterator> ix = range.first;
obj<AAllocIterator> end_ix = range.second;
obj<AAllocIterator> ix = range.begin();
obj<AAllocIterator> end_ix = range.end();
REQUIRE(ix.iface());
REQUIRE(ix.data());
@ -248,6 +247,27 @@ namespace xo {
REQUIRE(ix.compare(ix).is_equal());
//REQUIRE(ix.compare(end_ix).is_equal());
REQUIRE(ix != end_ix);
{
REQUIRE(arena.error_count_ == 0);
REQUIRE(ix.deref().is_valid());
REQUIRE(ix.deref().size() == padding::with_padding(req_z));
auto [payload_lo, payload_hi] = ix.deref().payload();
REQUIRE(payload_lo == mem);
REQUIRE(payload_hi == mem + ix.deref().size());
}
/* valid iterator can be advanced + reaches end */
{
ix.next();
REQUIRE(arena.error_count_ == 0);
REQUIRE(ix == end_ix);
}
}
}