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xo-alloc2: + Allocator.alloc_range() with DArena input

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This commit is contained in:
Roland Conybeare 2025-12-18 18:34:54 -05:00
commit 70ce4712e1
15 changed files with 182 additions and 68 deletions
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46
xo-alloc2/src/alloc2/DArenaIterator.cpp
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@ -19,16 +19,10 @@ namespace xo {
constexpr bool c_debug_flag = false;
scope log(XO_DEBUG(c_debug_flag));
assert(arena);
if (arena->config_.store_header_flag_ == false) {
arena->capture_error(error::alloc_iterator_not_supported);
AllocHeader * begin_hdr = begin_header(arena);
if (!begin_hdr)
return DArenaIterator::invalid();
}
byte * begin_byte = arena->lo_;
AllocHeader * begin_hdr = (AllocHeader *)begin_byte;
log && log(xtag("begin_hdr", begin_hdr));
@ -41,20 +35,48 @@ namespace xo {
constexpr bool c_debug_flag = false;
scope log(XO_DEBUG(c_debug_flag));
AllocHeader * end_hdr = end_header(arena);
if (!end_hdr)
return DArenaIterator::invalid();
log && log(xtag("end_hdr", end_hdr));
return DArenaIterator(arena, end_hdr);
}
AllocHeader *
DArenaIterator::begin_header(const DArena * arena)
{
assert(arena);
if (arena->config_.store_header_flag_ == false) {
arena->capture_error(error::alloc_iterator_not_supported);
return DArenaIterator::invalid();
return nullptr;
}
byte * begin_byte = arena->lo_;
AllocHeader * begin_hdr = (AllocHeader *)begin_byte;
return begin_hdr;
}
AllocHeader *
DArenaIterator::end_header(const DArena * arena)
{
assert(arena);
if (arena->config_.store_header_flag_ == false) {
arena->capture_error(error::alloc_iterator_not_supported);
return nullptr;
}
byte * end_byte = arena->free_;
AllocHeader * end_hdr = (AllocHeader *)end_byte;
log && log(xtag("end_hdr", end_hdr));
return DArenaIterator(arena, end_hdr);
return end_hdr;
}
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