277 lines
9.3 KiB
C++
277 lines
9.3 KiB
C++
/** @file AllocIterator.test.cpp
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*
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* @author Roland Conybeare, Dec 2025
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**/
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#include "Allocator.hpp"
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#include "AllocIterator.hpp"
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#include "arena/IAllocator_DArena.hpp"
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#include "arena/IAllocIterator_DArenaIterator.hpp"
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#include "padding.hpp"
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#include <xo/indentlog/scope.hpp>
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#include <xo/indentlog/print/tag.hpp>
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#include <catch2/catch.hpp>
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namespace xo {
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using xo::mm::AAllocator;
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using xo::mm::AllocInfo;
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using xo::mm::AAllocIterator;
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using xo::mm::IAllocIterator_Any;
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using xo::mm::IAllocIterator_Xfer;
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using xo::mm::IAllocIterator_DArenaIterator;
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using xo::mm::DArenaIterator;
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using xo::mm::ArenaConfig;
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using xo::mm::DArena;
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using xo::mm::padding;
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using xo::mm::error;
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using xo::facet::DVariantPlaceholder;
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using xo::facet::obj;
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using xo::facet::typeseq;
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using std::byte;
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namespace ut {
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TEST_CASE("IAllocIterator_Xfer_DArenaIterator", "[alloc2]")
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{
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/* verify IAllocIterator_Xfer is constructible + satisfies concept checks */
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IAllocIterator_Xfer<DArenaIterator, IAllocIterator_DArenaIterator> xfer;
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REQUIRE(IAllocIterator_Xfer<DArenaIterator, IAllocIterator_DArenaIterator>::_valid);
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}
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TEST_CASE("IAllocIterator_Any", "[alloc2]")
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{
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/* verify IAllocIterator_Any is constructible + satisfies concept checks */
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IAllocIterator_Any any;
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REQUIRE(IAllocIterator_Any::_valid);
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}
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TEST_CASE("obj_IAllocIterator", "[alloc2]")
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{
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/* verify variant obj constructible */
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obj<AAllocIterator> obj_any;
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REQUIRE(obj_any.iface());
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REQUIRE(obj_any.data() == nullptr);
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}
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TEST_CASE("IAllocIterator-disabled-1", "[alloc2]")
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{
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/* verify iteration over empty arena */
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/* typed allocator a1o */
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ArenaConfig cfg { .name_ = "testarena",
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.size_ = 64*1024,
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.debug_flag_ = false };
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DArena arena = DArena::map(cfg);
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obj<AAllocator, DArena> a1o{&arena};
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REQUIRE(a1o.reserved() >= cfg.size_);
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REQUIRE(a1o.committed() == 0);
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REQUIRE(a1o.available() == 0);
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REQUIRE(a1o.allocated() == 0);
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DArenaIterator ix = arena.begin();
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/* iteration not supported since we did not set
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* ArenaConfig.store_header_flag_
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*/
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REQUIRE(ix.is_invalid());
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REQUIRE(ix != ix);
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REQUIRE(arena.error_count_ == 1);
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REQUIRE(arena.last_error_.error_seq_ == 1);
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REQUIRE(arena.last_error_.error_ == error::alloc_iterator_not_supported);
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DArenaIterator end_ix = arena.end();
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/* iteration not supported since we did not set
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* ArenaConfig.store_header_flag_
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*/
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REQUIRE(end_ix.is_invalid());
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REQUIRE(end_ix != end_ix);
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REQUIRE(arena.error_count_ == 2);
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REQUIRE(arena.last_error_.error_seq_ == 2);
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REQUIRE(arena.last_error_.error_ == error::alloc_iterator_not_supported);
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}
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TEST_CASE("IAllocIterator-emptyarena", "[alloc2]")
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{
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/* verify iteration over empty arena */
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/* typed allocator a1o */
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ArenaConfig cfg { .name_ = "testarena",
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.size_ = 64*1024,
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.store_header_flag_ = true,
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.debug_flag_ = false };
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DArena arena = DArena::map(cfg);
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obj<AAllocator, DArena> a1o{&arena};
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REQUIRE(a1o.reserved() >= cfg.size_);
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REQUIRE(a1o.committed() == 0);
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REQUIRE(a1o.available() == 0);
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REQUIRE(a1o.allocated() == 0);
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DArenaIterator ix = arena.begin();
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DArenaIterator end_ix = arena.end();
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REQUIRE(ix.is_valid());
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REQUIRE(end_ix.is_valid());
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/* verify obj 'fat pointer' packaging */
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obj<AAllocIterator,DArenaIterator> ix_vt{&ix};
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obj<AAllocIterator,DArenaIterator> end_ix_vt{&end_ix};
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REQUIRE(ix_vt.iface());
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REQUIRE(ix_vt.data());
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REQUIRE(end_ix_vt.iface());
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REQUIRE(end_ix_vt.data());
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/* arena is empty, so begin==end */
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REQUIRE(ix == end_ix);
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REQUIRE(arena.error_count_ == 0);
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/* empty iterator cannot be dereferenced */
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{
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AllocInfo bad_info = *ix;
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REQUIRE(!bad_info.is_valid());
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REQUIRE(arena.error_count_ == 1);
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REQUIRE(arena.last_error_.error_seq_ == 1);
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REQUIRE(arena.last_error_.error_ == error::alloc_iterator_deref);
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}
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/* empty iterator cannot be advanced */
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{
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ix.next();
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REQUIRE(arena.error_count_ == 2);
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REQUIRE(arena.last_error_.error_seq_ == 2);
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REQUIRE(arena.last_error_.error_ == error::alloc_iterator_next);
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}
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}
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TEST_CASE("IAllocIterator-singlearena", "[alloc2]")
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{
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scope log(XO_DEBUG(true));
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ArenaConfig cfg { .name_ = "testarena",
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.size_ = 64*1024,
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.store_header_flag_ = true,
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.debug_flag_ = false };
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DArena arena = DArena::map(cfg);
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obj<AAllocator, DArena> a1o{&arena};
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REQUIRE(arena.error_count_ == 0);
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REQUIRE(a1o.reserved() >= cfg.size_);
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REQUIRE(a1o.committed() == 0);
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REQUIRE(a1o.available() == 0);
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REQUIRE(a1o.allocated() == 0);
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/* arbitrary alloc size */
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size_t req_z = 13;
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byte * mem = a1o.alloc(req_z);
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REQUIRE(arena.error_count_ == 0);
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REQUIRE(mem != nullptr);
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{
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DArenaIterator ix = arena.begin();
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DArenaIterator end_ix = arena.end();
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REQUIRE(ix.is_valid());
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REQUIRE(end_ix.is_valid());
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/* arena is non-empty, so begin!=end */
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REQUIRE (ix != end_ix);
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REQUIRE(arena.error_count_ == 0);
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/* valid iterator can be dereferenced */
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{
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AllocInfo info = *ix;
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REQUIRE(arena.error_count_ == 0);
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REQUIRE(info.is_valid());
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REQUIRE(info.size() == padding::with_padding(req_z));
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auto [payload_lo, payload_hi] = info.payload();
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REQUIRE(payload_lo == mem);
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REQUIRE(payload_hi == mem + info.size());
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}
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/* valid iterator can be advanced */
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{
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ix.next();
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REQUIRE(arena.error_count_ == 0);
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REQUIRE(ix == end_ix);
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}
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}
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// repeat, this time with generic iterators
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{
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log && log(xtag("section", "obj<AAllocIterator>"),
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xtag("arena", &arena),
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xtag("arena.lo", arena.lo_),
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xtag("arena.free", arena.free_));
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DArena scratch_mm
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= DArena::map(
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ArenaConfig{
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.size_ = 4*1024,
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.hugepage_z_ = 4*1024});
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auto range = a1o.alloc_range(scratch_mm);
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obj<AAllocIterator> ix = range.begin();
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obj<AAllocIterator> end_ix = range.end();
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REQUIRE(ix.iface());
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REQUIRE(ix.data());
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REQUIRE(end_ix.iface());
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REQUIRE(end_ix.data());
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REQUIRE(scratch_mm.allocated() >= 2*sizeof(DArenaIterator));
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REQUIRE(scratch_mm.available() > 0);
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log && log(xtag("ix._typeseq", ix._typeseq()),
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xtag("ix.data", ix.data()));
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log && log(xtag("typeseq<DArena>",
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typeseq::id<DArena>()));
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log && log(xtag("typeseq<DArenaIterator>",
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typeseq::id<DArenaIterator>()));
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log && log(xtag("typeseq<DVariantPlaceholder>",
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typeseq::id<DVariantPlaceholder>()));
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REQUIRE(ix.compare(ix).is_equal());
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//REQUIRE(ix.compare(end_ix).is_equal());
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REQUIRE(ix != end_ix);
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{
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REQUIRE(arena.error_count_ == 0);
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REQUIRE(ix.deref().is_valid());
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REQUIRE(ix.deref().size() == padding::with_padding(req_z));
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auto [payload_lo, payload_hi] = ix.deref().payload();
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REQUIRE(payload_lo == mem);
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REQUIRE(payload_hi == mem + ix.deref().size());
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}
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/* valid iterator can be advanced + reaches end */
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{
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ix.next();
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REQUIRE(arena.error_count_ == 0);
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REQUIRE(ix == end_ix);
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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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/* end AllocIterator.test.cpp */
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