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xo-alloc2: + Allocator::alloc_info()

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Also extend unit test
This commit is contained in:
Roland Conybeare 2025-12-16 16:44:44 -05:00
commit 56bdaec94c
15 changed files with 156 additions and 40 deletions
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28
src/alloc2/DArena.cpp
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@ -247,6 +247,34 @@ namespace xo {
return (header_type *)((byte *)obj - sizeof(header_type));
}
AllocInfo
DArena::alloc_info(value_type mem) noexcept
{
if (!config_.store_header_flag_) [[unlikely]] {
++(error_count_);
last_error_ = AllocatorError(error::alloc_info_disabled,
error_count_,
0 /*add_commit_z*/,
committed_z_,
this->reserved());
return AllocInfo::error_not_configured(&config_.header_);
}
byte * header_mem = mem - sizeof(AllocHeader);
if (!this->contains(header_mem)) {
++(error_count_);
last_error_ = AllocatorError(error::alloc_info_address,
error_count_,
0 /*add_commit_z*/,
committed_z_,
this->reserved());
}
return AllocInfo(&config_.header_, (AllocHeader *)header_mem);
}
void
DArena::clear() noexcept
{