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xo-alloc2: streamlining + bugfixes [wip]

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This commit is contained in:
Roland Conybeare 2025-12-12 19:44:38 -05:00
commit 0c7d63bf01
10 changed files with 311 additions and 10 deletions
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38
utest/arena.test.cpp
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@ -174,6 +174,44 @@ namespace xo {
REQUIRE(a1o.committed() <= a1o.reserved());
}
TEST_CASE("allocator-alloc-2", "[alloc2][Allocator]")
{
using header_type = AAllocator::header_type;
/* typed allocator a1o, with object header */
ArenaConfig cfg { .name_ = "testarena",
.size_ = 64*1024,
.store_header_flag_ = true,
/* up to 4GB */
.header_size_mask_ = 0xffffffff,
.debug_flag_ = false,
};
DArena arena = DArena::map(cfg);
obj<AAllocator, DArena> a1o{&arena};
REQUIRE(a1o.reserved() >= cfg.size_);
REQUIRE(a1o.committed() == 0);
REQUIRE(a1o.available() == 0);
REQUIRE(a1o.allocated() == 0);
size_t z0 = 1;
byte * m0 = a1o.alloc(1);
REQUIRE(m0);
header_type* header = (header_type*)(m0 - sizeof(header_type));
REQUIRE(a1o.contains(header));
REQUIRE(((*header) & cfg.header_size_mask_) == padding::with_padding(z0));
REQUIRE(a1o.last_error().error_ == error::none);
REQUIRE(a1o.last_error().error_seq_ == 0);
REQUIRE(a1o.allocated() >= z0);
REQUIRE(a1o.allocated() < sizeof(AAllocator::header_type) + z0 + padding::c_alloc_alignment );
REQUIRE(a1o.allocated() <= a1o.committed());
REQUIRE(a1o.allocated() + a1o.available() == a1o.committed());
REQUIRE(a1o.committed() <= a1o.reserved());
}
TEST_CASE("allocator-fail-1", "[alloc2][AAllocator]")
{
/* typed allocator a1o */