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xo-alloc2: + Allocator.last_error() for last-error reporting.

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This commit is contained in:
Roland Conybeare 2025-12-12 13:26:09 -05:00
commit 4865c0cd22
5 changed files with 40 additions and 33 deletions
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7
xo-alloc2/src/alloc2/IAllocator_DArena.cpp
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@ -52,6 +52,11 @@ namespace xo {
return (s.lo_ <= p) && (p < s.hi_);
}
AllocatorError
IAllocator_DArena::last_error(const DArena & s) noexcept {
return s.last_error_;
}
bool
IAllocator_DArena::expand(DArena & s, size_t target_z) noexcept
{
@ -69,6 +74,7 @@ namespace xo {
if (s.lo_ + target_z > s.hi_) [[unlikely]] {
++(s.error_count_);
s.last_error_ = AllocatorError(error::reserve_exhausted,
s.error_count_,
target_z, s.committed_z_, reserved(s));
#ifdef OBSOLETE
@ -116,6 +122,7 @@ namespace xo {
if (::mprotect(commit_start, add_commit_z, PROT_READ | PROT_WRITE) != 0) [[unlikely]] {
++(s.error_count_);
s.last_error_ = AllocatorError(error::commit_failed,
s.error_count_,
add_commit_z, s.committed_z_, reserved(s));
#ifdef OBSOLETE
throw std::runtime_error(tostr("ArenaAlloc::expand: commit failure",