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xo-arena: add DArena.alloc utest

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This commit is contained in:
Roland Conybeare 2026-01-06 17:41:30 -05:00
commit 390c5533df
1 changed files with 42 additions and 1 deletions
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43
xo-arena/utest/DArena.test.cpp
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@ -11,6 +11,9 @@
namespace xo {
using xo::mm::DArena;
using xo::mm::ArenaConfig;
using xo::mm::padding;
using xo::mm::error;
using xo::reflect::typeseq;
using xo::xtag;
using std::byte;
@ -101,7 +104,7 @@ namespace xo {
REQUIRE(arena2.committed_z_ == committed_z);
}
TEST_CASE("arena-expand-1", "[arena][DArena]")
TEST_CASE("DArena-expand-1", "[arena][DArena]")
{
/* typed allocator a1o */
ArenaConfig cfg { .name_ = "testarena",
@ -128,6 +131,44 @@ namespace xo {
}
TEST_CASE("arena-alloc-1", "[arena][DArena]")
{
/* typed allocator a1o */
ArenaConfig cfg { .name_ = "testarena",
.size_ = 64*1024,
.debug_flag_ = false };
DArena arena = DArena::map(cfg);
REQUIRE(arena.reserved() >= cfg.size_);
REQUIRE(arena.committed() == 0);
REQUIRE(arena.available() == 0);
REQUIRE(arena.allocated() == 0);
size_t z0 = 1;
byte * m0 = arena.alloc(typeseq::anon(), 1);
REQUIRE(m0);
REQUIRE(arena.last_error().error_ == error::ok);
REQUIRE(arena.last_error().error_seq_ == 0);
REQUIRE(arena.allocated() >= z0);
REQUIRE(arena.allocated() < z0 + padding::c_alloc_alignment );
REQUIRE(arena.allocated() <= arena.committed());
REQUIRE(arena.allocated() + arena.available() == arena.committed());
REQUIRE(arena.committed() <= arena.reserved());
size_t z1 = 16;
byte * m1 = arena.alloc(typeseq::anon(), z1);
REQUIRE(m1);
REQUIRE(arena.last_error().error_ == error::ok);
REQUIRE(arena.last_error().error_seq_ == 0);
REQUIRE(arena.allocated() >= z0 + z1);
REQUIRE(arena.allocated() < z0 + z1 + 2 * padding::c_alloc_alignment );
REQUIRE(arena.allocated() <= arena.committed());
REQUIRE(arena.allocated() + arena.available() == arena.committed());
REQUIRE(arena.committed() <= arena.reserved());
}
}
}