88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
/* @file ArenaAlloc.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/ArenaAlloc.hpp"
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#include <catch2/catch.hpp>
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namespace xo {
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using xo::gc::ArenaAlloc;
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namespace ut {
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namespace {
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struct testcase_alloc {
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explicit testcase_alloc(std::size_t z)
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:
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arena_z_{z} {}
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std::size_t arena_z_;
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};
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std::vector<testcase_alloc>
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s_testcase_v = {
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testcase_alloc(4096)
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};
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}
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TEST_CASE("linearalloc", "[alloc]")
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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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const testcase_alloc & tc = s_testcase_v[i_tc];
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constexpr bool c_debug_flag = false;
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auto alloc = ArenaAlloc::make("linearalloc",
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tc.arena_z_, c_debug_flag);
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alloc->expand(tc.arena_z_);
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REQUIRE(alloc.get());
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REQUIRE(alloc->name() == "linearalloc");
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REQUIRE(alloc->size() == std::max(tc.arena_z_, alloc->hugepage_z()));
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REQUIRE(alloc->available() == std::max(tc.arena_z_, alloc->hugepage_z()));
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REQUIRE(alloc->allocated() == 0);
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REQUIRE(alloc->is_before_checkpoint(alloc->free_ptr()) == false);
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REQUIRE(alloc->before_checkpoint() == 0);
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REQUIRE(alloc->after_checkpoint() == 0);
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auto free0 = alloc->free_ptr();
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auto mem = alloc->alloc(std::max(tc.arena_z_, alloc->hugepage_z()));
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REQUIRE(mem != nullptr);
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REQUIRE(mem == free0);
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REQUIRE(alloc->size() == std::max(tc.arena_z_, alloc->hugepage_z()));
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REQUIRE(alloc->available() == 0);
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REQUIRE(alloc->allocated() == std::max(tc.arena_z_, alloc->hugepage_z()));
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REQUIRE(alloc->is_before_checkpoint(mem) == false);
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REQUIRE(alloc->before_checkpoint() == 0);
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REQUIRE(alloc->after_checkpoint() == std::max(tc.arena_z_, alloc->hugepage_z()));
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alloc->clear();
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REQUIRE(alloc->free_ptr() == free0);
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REQUIRE(alloc->available() == std::max(tc.arena_z_, alloc->hugepage_z()));
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REQUIRE(alloc->allocated() == 0);
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REQUIRE(alloc->is_before_checkpoint(free0) == false);
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REQUIRE(alloc->before_checkpoint() == 0);
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REQUIRE(alloc->after_checkpoint() == 0);
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mem = alloc->alloc(1);
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auto used = sizeof(void*);
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REQUIRE(alloc->size() == std::max(tc.arena_z_, alloc->hugepage_z()));
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REQUIRE(alloc->available() == std::max(tc.arena_z_, alloc->hugepage_z()) - used);
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REQUIRE(alloc->allocated() == used);
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REQUIRE(alloc->is_before_checkpoint(free0) == false);
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REQUIRE(alloc->before_checkpoint() == 0);
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REQUIRE(alloc->after_checkpoint() == used);
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}
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}
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} /*namespace ut */
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} /*namespace xo*/
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