222 lines
7.8 KiB
C++
222 lines
7.8 KiB
C++
/** @file random_allocs.cpp
|
|
*
|
|
* @author Roland Conybeare, Dec 2025
|
|
**/
|
|
|
|
#include "random_allocs.hpp"
|
|
#include <xo/arena/DArena.hpp>
|
|
#include <xo/arena/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::DArena;
|
|
using xo::mm::ArenaConfig;
|
|
using xo::mm::padding;
|
|
using xo::rng::xoshiro256ss;
|
|
using xo::facet::obj;
|
|
using xo::scope;
|
|
using xo::xtag;
|
|
using std::uint32_t;
|
|
using std::byte;
|
|
|
|
/* remember an allocation result.
|
|
* application owns memory in [lo, lo+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_; }
|
|
|
|
byte * lo_ = nullptr;
|
|
size_t z_ = 0;
|
|
};
|
|
|
|
bool
|
|
AllocUtil::random_allocs(uint32_t n_alloc,
|
|
uint32_t max_alloc_z,
|
|
bool catch_flag,
|
|
xoshiro256ss * p_rgen,
|
|
obj<AAllocator> mm)
|
|
{
|
|
using xo::facet::typeseq;
|
|
|
|
scope log(XO_DEBUG(catch_flag), xtag("n-alloc", n_alloc));
|
|
|
|
/* track allocs. verify:
|
|
* - allocs are non-overlapping
|
|
* - allocs have valid alloc header
|
|
* - allocs surrounded by guard bytes
|
|
*
|
|
* allocs sorted on Alloc::lo
|
|
*/
|
|
std::map<const byte *, Alloc> allocs_by_lo_map;
|
|
/* allocs sorted on Alloc::hi */
|
|
std::map<const 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};
|
|
|
|
double si = ngen(*p_rgen);
|
|
double zi = ::pow(2.0, si);
|
|
std::size_t z = ::ceil(zi);
|
|
if (z > max_alloc_z)
|
|
z = max_alloc_z;
|
|
|
|
bool ok_flag = true;
|
|
|
|
std::byte * mem = mm.alloc(typeseq::sentinel(), z);
|
|
|
|
log && log(xtag("i_alloc", i_alloc),
|
|
xtag("si", si),
|
|
xtag("zi", zi),
|
|
xtag("mem", mem));
|
|
log && log(xtag("used", mm.allocated()),
|
|
xtag("avail", mm.available()),
|
|
xtag("commit", mm.committed()),
|
|
xtag("resv", mm.reserved()));
|
|
|
|
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, mem != nullptr);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, mm.contains(mem));
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, mm.last_error().error_seq_ == 0);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, mm.last_error().error_ == xo::mm::error::ok);
|
|
|
|
{
|
|
auto ix = allocs_by_lo_map.lower_bound(mem);
|
|
if (ix != allocs_by_lo_map.end()) {
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, (ix->first > mem + z));
|
|
}
|
|
}
|
|
|
|
{
|
|
auto ix = allocs_by_hi_map.upper_bound(mem);
|
|
if (ix != allocs_by_hi_map.end()) {
|
|
--ix;
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, (ix->first < mem));
|
|
}
|
|
}
|
|
|
|
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 configured -> 0 = sentinel */
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, info.tseq() == 0);
|
|
|
|
if ((info.p_config_->guard_z_ > 0)
|
|
|| info.guard_lo().first
|
|
|| info.guard_lo().second
|
|
|| info.guard_hi().first
|
|
|| info.guard_hi().second)
|
|
{
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_lo().first != nullptr);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_lo().second != nullptr);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_lo().first + info.guard_z()
|
|
== info.guard_lo().second);
|
|
|
|
for (const byte * p = info.guard_lo().first;
|
|
p != info.guard_lo().second; ++p)
|
|
{
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, (uint8_t)*p == info.guard_byte());
|
|
}
|
|
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_hi().first != nullptr);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_hi().second != nullptr);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_hi().first + info.guard_z()
|
|
== info.guard_hi().second);
|
|
|
|
for (const byte * p = info.guard_hi().first;
|
|
p != info.guard_hi().second; ++p)
|
|
{
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag, (uint8_t)*p == info.guard_byte());
|
|
}
|
|
|
|
|
|
} else {
|
|
/* control here only if all of:
|
|
* - guard_z is zero
|
|
* - guard_lo empty
|
|
* - guard_hi empty
|
|
*/
|
|
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_lo().first == nullptr);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_lo().second == nullptr);
|
|
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_hi().first == nullptr);
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
info.guard_hi().second == nullptr);
|
|
|
|
}
|
|
|
|
/** scratch arena for iterators **/
|
|
DArena scratch_mm = DArena::map(ArenaConfig{.name_ = "scratch",
|
|
.size_ = 4*1024,
|
|
.hugepage_z_ = 4*1024 });
|
|
auto range = mm.alloc_range(scratch_mm);
|
|
|
|
/* limit iteration test to a few cases:
|
|
* - 1st loop
|
|
* - median loop
|
|
* - last loop
|
|
*/
|
|
if (i_alloc == 0 || i_alloc == n_alloc || 2*i_alloc == n_alloc)
|
|
{
|
|
/* verify iteration visits all the allocs, exactly once */
|
|
|
|
/* temp copy; remove allocs from this map as we encounter
|
|
* them via range iteration below
|
|
*/
|
|
auto alloc_map = allocs_by_lo_map;
|
|
|
|
if (log) {
|
|
log(xtag("allocs_by_lo_map.size", allocs_by_lo_map.size()));
|
|
|
|
for (auto & kv : allocs_by_lo_map) {
|
|
log(xtag("key", kv.first), xtag("value", kv.second.lo()), xtag("hi", kv.second.hi()));
|
|
}
|
|
}
|
|
|
|
for (AllocInfo info : range) {
|
|
INFO(tostr(xtag("alloc_map.size", alloc_map.size()),
|
|
xtag("i_alloc", i_alloc)));
|
|
INFO(tostr(xtag("payload.first", info.payload().first)));
|
|
|
|
const std::byte * alloc_lo = info.payload().first;
|
|
|
|
REQUIRE_ORFAIL(ok_flag, catch_flag,
|
|
alloc_map.find(alloc_lo) != alloc_map.end());
|
|
|
|
alloc_map.erase(alloc_lo);
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/* end random_allocs.cpp */
|