93 lines
3.8 KiB
C++
93 lines
3.8 KiB
C++
/* @file GC.test.cpp
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*
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* author: Roland Conybeare, Jul 2025
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*/
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#include "xo/alloc/GC.hpp"
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#include <catch2/catch.hpp>
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namespace xo {
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using xo::gc::GC;
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using xo::gc::generation;
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using xo::gc::Config;
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namespace ut {
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namespace {
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struct testcase_gc {
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testcase_gc(std::size_t nz, std::size_t tz, std::size_t n_gct, std::size_t t_gct)
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: nursery_z_{nz}, tenured_z_{tz}, incr_gc_threshold_{n_gct}, full_gc_threshold_{t_gct} {}
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std::size_t nursery_z_;
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std::size_t tenured_z_;
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std::size_t incr_gc_threshold_;
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std::size_t full_gc_threshold_;
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};
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std::vector<testcase_gc>
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s_testcase_v = {
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// n_gct: nursery gc threshold
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// t_gct: tenured gc threshold
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//
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// nz tz n_gct t_gct
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testcase_gc(1024, 4096, 1024, 1024)
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};
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}
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TEST_CASE("gc", "[alloc][gc]")
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{
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for (std::size_t i_tc = 0, n_tc = s_testcase_v.size(); i_tc < n_tc; ++i_tc) {
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try {
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const testcase_gc & tc = s_testcase_v[i_tc];
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up<GC> gc = GC::make(
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{.initial_nursery_z_ = tc.nursery_z_,
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.initial_tenured_z_ = tc.tenured_z_,
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.incr_gc_threshold_ = tc.incr_gc_threshold_,
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.full_gc_threshold_ = tc.full_gc_threshold_,
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});
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REQUIRE(gc.get());
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REQUIRE(gc->name() == "GC");
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REQUIRE(gc->nursery_to_allocated() == 0);
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REQUIRE(gc->nursery_to_committed() >= tc.nursery_z_);
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REQUIRE(gc->nursery_to_reserved() >= tc.nursery_z_);
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REQUIRE(gc->nursery_to_reserved() < tc.nursery_z_ + gc->hugepage_z());
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REQUIRE(gc->size() >= tc.nursery_z_ + tc.tenured_z_);
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REQUIRE(gc->size() < tc.nursery_z_ + gc->hugepage_z() + tc.tenured_z_ + gc->hugepage_z());
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REQUIRE(gc->allocated() == 0);
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REQUIRE(gc->available() == gc->nursery_to_reserved());
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REQUIRE(gc->before_checkpoint() == 0);
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// ListAlloc model is that nothing is before checkpoint
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// until it's first established
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REQUIRE(gc->after_checkpoint() == 0);
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REQUIRE(gc->gc_in_progress() == false);
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REQUIRE(gc->is_gc_enabled() == true);
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REQUIRE(gc->native_gc_statistics().gen_v_[gen2int(generation::nursery)].n_gc_ == 0);
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REQUIRE(gc->native_gc_statistics().gen_v_[gen2int(generation::tenured)].n_gc_ == 0);
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/* gc with empty state */
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gc->request_gc(generation::nursery);
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REQUIRE(gc->gc_in_progress() == false);
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REQUIRE(gc->native_gc_statistics().gen_v_[gen2int(generation::nursery)].n_gc_ == 1);
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REQUIRE(gc->native_gc_statistics().gen_v_[gen2int(generation::tenured)].n_gc_ == 0);
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/* still empty state */
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gc->request_gc(generation::tenured);
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REQUIRE(gc->gc_in_progress() == false);
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REQUIRE(gc->native_gc_statistics().gen_v_[gen2int(generation::nursery)].n_gc_ == 1);
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REQUIRE(gc->native_gc_statistics().gen_v_[gen2int(generation::tenured)].n_gc_ == 1);
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} catch (std::exception &ex) {
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std::cerr << "caught exception: " << ex.what() << std::endl;
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REQUIRE(false);
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}
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}
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}
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} /*namespace ut*/
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} /*namespace xo*/
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/* GC.test.cpp */
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