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xo-alloc2: capture error info, retire exceptions in alloc path

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This commit is contained in:
Roland Conybeare 2025-12-12 13:10:26 -05:00
commit 360ae4cb45
6 changed files with 103 additions and 48 deletions
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22
src/alloc2/IAllocator_DArena.cpp
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@ -66,10 +66,16 @@ namespace xo {
return true;
}
if (s.lo_ + target_z > s.hi_) {
if (s.lo_ + target_z > s.hi_) [[unlikely]] {
++(s.error_count_);
s.last_error_ = AllocatorError(error::reserve_exhausted,
target_z, s.committed_z_, reserved(s));
#ifdef OBSOLETE
throw std::runtime_error(tostr("ArenaAlloc::expand: requested size exceeds reserved size",
xtag("requested", target_z),
xtag("reserved", reserved(s))));
#endif
return false;
}
@ -107,11 +113,15 @@ namespace xo {
// xtag("add_commit_z", add_commit_z),
// xtag("commit_end", commit_start + add_commit_z));
if (::mprotect(commit_start, add_commit_z, PROT_READ | PROT_WRITE) != 0) {
assert(false);
// throw std::runtime_error(tostr("ArenaAlloc::expand: commit failure",
// xtag("committed_z", committed_z_),
// xtag("add_commit_z", add_commit_z)));
if (::mprotect(commit_start, add_commit_z, PROT_READ | PROT_WRITE) != 0) [[unlikely]] {
++(s.error_count_);
s.last_error_ = AllocatorError(error::commit_failed,
add_commit_z, s.committed_z_, reserved(s));
#ifdef OBSOLETE
throw std::runtime_error(tostr("ArenaAlloc::expand: commit failure",
xtag("committed_z", s.committed_z_),
xtag("add_commit_z", add_commit_z)));
#endif
return false;
}