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xo-alloc2: AAllocator.expand() working

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This commit is contained in:
Roland Conybeare 2025-12-12 11:38:48 -05:00
commit 24109a9e11
3 changed files with 21 additions and 10 deletions
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18
xo-alloc2/src/alloc2/IAllocator_DArena.cpp
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@ -5,6 +5,7 @@
#include "IAllocator_DArena.hpp"
#include "padding.hpp"
#include "xo/indentlog/scope.hpp"
#include <cassert>
#include <cstddef>
#include <sys/mman.h>
@ -42,20 +43,21 @@ namespace xo {
bool
IAllocator_DArena::expand(DArena & s, size_t target_z)
{
// scope log(XO_DEBUG(debug_flag_),
// xtag("offset_z", offset_z),
// xtag("committed_z", committed_z_));
scope log(XO_DEBUG(s.config_.debug_flag_),
xtag("target_z", target_z),
xtag("committed_z", s.committed_z_));
if (target_z <= s.committed_z_) {
// log && log("trivial success, offset within committed range",
// xtag("offset_z", offset_z),
// xtag("committed_z", committed_z_));
log && log("trivial success, offset within committed range",
xtag("target_z", target_z),
xtag("committed_z", s.committed_z_));
return true;
}
if (s.lo_ + target_z > s.hi_) {
// throw std::runtime_error(tostr("ArenaAlloc::expand: requested size exceeds reserved size",
// xtag("requested", offset_z), xtag("reserved", reserved())));
throw std::runtime_error(tostr("ArenaAlloc::expand: requested size exceeds reserved size",
xtag("requested", target_z),
xtag("reserved", reserved(s))));
return false;
}