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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 ef8ec32a2d
15 changed files with 156 additions and 40 deletions
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27
xo-alloc2/utest/random_allocs.cpp
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@ -4,12 +4,15 @@
**/
#include "random_allocs.hpp"
#include "padding.hpp"
#include <xo/indentlog/scope.hpp>
#include <xo/indentlog/print/tag.hpp>
#include <catch2/catch.hpp>
#include <map>
namespace utest {
using xo::mm::AllocInfo;
using xo::mm::padding;
using xo::rng::xoshiro256ss;
using xo::facet::obj;
using xo::scope;
@ -20,9 +23,9 @@ namespace utest {
/* remember an allocation result.
* application owns memory in [lo, lo+z)
*/
struct AllocInfo {
AllocInfo() = default;
AllocInfo(byte * lo, size_t z) : lo_{lo}, z_{z} {}
struct Alloc {
Alloc() = default;
Alloc(byte * lo, size_t z) : lo_{lo}, z_{z} {}
byte * lo() const { return lo_; }
byte * hi() const { return lo_ + z_; }
@ -44,11 +47,11 @@ namespace utest {
* - allocs have valid alloc header
* - allocs surrounded by guard bytes
*
* allocs sorted on AllocInfo::lo
* allocs sorted on Alloc::lo
*/
std::map<byte *, AllocInfo> allocs_by_lo_map;
/* allocs sorted on AllocInfo::hi */
std::map<byte *, AllocInfo*> allocs_by_hi_map;
std::map<byte *, Alloc> allocs_by_lo_map;
/* allocs sorted on Alloc::hi */
std::map<byte *, Alloc*> allocs_by_hi_map;
for (uint32_t i_alloc = 0; i_alloc < n_alloc; ++i_alloc) {
std::normal_distribution<double> ngen{5.0, 1.5};
@ -90,10 +93,18 @@ namespace utest {
}
}
allocs_by_lo_map[mem] = AllocInfo(mem, z);
allocs_by_lo_map[mem] = Alloc(mem, z);
allocs_by_hi_map[mem + z] = &(allocs_by_lo_map[mem]);
/* verify we can recover alloc info */
AllocInfo info = mm.alloc_info(mem);
REQUIRE_ORFAIL(ok_flag, catch_flag, info.is_valid());
REQUIRE_ORFAIL(ok_flag, catch_flag, info.size() == padding::with_padding(z));
/* age isn't configured -> 0 = sentinel */
REQUIRE_ORFAIL(ok_flag, catch_flag, info.age() == 0);
/* tseq isn't confrigured -> 0 = sentinel */
REQUIRE_ORFAIL(ok_flag, catch_flag, info.tseq() == 0);
}
return true;