Ichthyostega
fbf7a792a8
Likely the most widely used facility, which enters into meta-programming with type sequences, is our function-signature-detector `_Fun<X>`, which returns a argument type-sequence. After adding some bridges for cross-compatibility, function-arguments are now extracted as a new-style, ''variadic sequence'' without trailing `NullType`. Doing so required to augment some of the most widely used sequence-processing helpers to work seamlessly also with the new-style variadic sequences with a definition variant based on variadics, which typically will later-on obsolete the original solution, which at that time needed to be tediously coded as a series of explicit specialisations for N arguments.
420 lines
18 KiB
C++
420 lines
18 KiB
C++
/*
|
||
TestTracking(Test) - demonstrate test helpers for tracking automated clean-up
|
||
|
||
Copyright (C)
|
||
2024, Hermann Vosseler <Ichthyostega@web.de>
|
||
|
||
**Lumiera** is free software; you can redistribute it and/or modify it
|
||
under the terms of the GNU General Public License as published by the
|
||
Free Software Foundation; either version 2 of the License, or (at your
|
||
option) any later version. See the file COPYING for further details.
|
||
|
||
* *****************************************************************/
|
||
|
||
/** @file test-tracking-test.cpp
|
||
** unit test \ref TestTracking_test
|
||
*/
|
||
|
||
|
||
#include "lib/test/run.hpp"
|
||
#include "lib/test/test-helper.hpp"
|
||
#include "lib/test/tracking-dummy.hpp"
|
||
#include "lib/test/tracking-allocator.hpp"
|
||
#include "lib/allocator-handle.hpp"
|
||
#include "lib/format-cout.hpp"
|
||
#include "lib/format-util.hpp"
|
||
|
||
#include <string>
|
||
|
||
using std::string;
|
||
using util::toString;
|
||
using util::join;
|
||
|
||
|
||
namespace lib {
|
||
namespace test{
|
||
namespace test{
|
||
|
||
|
||
/***************************************************//**
|
||
* @test verify proper working of test helpers to track
|
||
* automated clean-up and memory deallocation.
|
||
* @see TestHelper_test
|
||
* @see tracking-dummy.hpp
|
||
* @see tracking-allocator.hpp
|
||
*/
|
||
class TestTracking_test : public Test
|
||
{
|
||
void
|
||
run (Arg)
|
||
{
|
||
demonstrate_logObject();
|
||
demonstrate_checkObject();
|
||
demonstrate_checkAllocator();
|
||
}
|
||
|
||
|
||
/** @test capture object lifecycle events in the EventLog.
|
||
* @see EventLog_test
|
||
* @see LateBindInstance_test
|
||
*/
|
||
void
|
||
demonstrate_logObject ()
|
||
{
|
||
auto& log = Tracker::log;
|
||
log.clear (this);
|
||
|
||
Tracker alpha; // (1) create α
|
||
auto randomAlpha = toString(alpha.val);
|
||
|
||
log.event("ID",alpha.val); // (2) α has an random ID
|
||
{
|
||
Tracker beta{55}; // (3) create β
|
||
alpha = beta; // (4) assign α ≔ β
|
||
}
|
||
log.event ("ID",alpha.val); // (5) thus α now also bears the ID 55 of β
|
||
Tracker gamma = move(alpha); // (6) create γ by move-defuncting α
|
||
{
|
||
Tracker delta(23); // (7) create δ with ID 23
|
||
delta = move(gamma); // (8) move-assign δ ⟵ γ
|
||
log.event ("ID",delta.val); // (9) thus δ now bears the ID 55 (moved α ⟶ γ ⟶ δ)
|
||
CHECK (delta.val == 55);
|
||
}
|
||
log.event("ID",alpha.val); // (X) and thus α is now a zombie object
|
||
CHECK (alpha.val == Tracker::DEFUNCT);
|
||
|
||
|
||
cout << "____Tracker-Log_______________\n"
|
||
<< util::join(Tracker::log, "\n")
|
||
<< "\n───╼━━━━━━━━━━━╾──────────────"<<endl;
|
||
|
||
CHECK (log.verify("EventLogHeader").on("TestTracking_test")
|
||
.beforeCall("ctor").on(&alpha) // (1) create α
|
||
.beforeEvent("ID", randomAlpha) // (2) α has an random ID
|
||
.beforeCall("ctor").arg(55) // (3) create β
|
||
.beforeCall("assign-copy").on(&alpha).arg("Track{55}") // (4) assign α ≔ β
|
||
.beforeCall("dtor").arg(55)
|
||
.beforeEvent("ID", "55") // (5) thus α now also bears the ID 55 of β
|
||
.beforeCall("ctor-move").on(&gamma).arg("Track{55}") // (6) create γ by move-defuncting α
|
||
.beforeCall("ctor").arg(23) // (7) create δ with ID 23
|
||
.beforeCall("assign-move").arg("Track{55}") // (8) move-assign δ ⟵ γ
|
||
.beforeEvent("ID", "55") // (9) thus δ now bears the ID 55 (moved α ⟶ γ ⟶ δ)
|
||
.beforeCall("dtor").arg(55)
|
||
.beforeEvent("ID", toString(Tracker::DEFUNCT)) // (X) and thus α is now a zombie object
|
||
);
|
||
}
|
||
|
||
|
||
|
||
/** @test dummy object with a tracking checksum.
|
||
*/
|
||
void
|
||
demonstrate_checkObject ()
|
||
{
|
||
CHECK (Dummy::checksum() == 0);
|
||
{
|
||
Dummy dum1; // picks a random positive int by default...
|
||
CHECK (0 < dum1.getVal() and dum1.getVal() <= 100'000'000);
|
||
CHECK (Dummy::checksum() == dum1.getVal());
|
||
|
||
Dummy dum2{55};
|
||
CHECK (dum2.getVal() == 55);
|
||
CHECK (Dummy::checksum() == dum1.getVal() + 55);
|
||
|
||
Dummy dum3{move (dum2)};
|
||
CHECK (dum3.getVal() == 55);
|
||
CHECK (dum2.getVal() == Dummy::DEFUNCT);
|
||
|
||
dum3.setVal (23);
|
||
CHECK (dum3.getVal() == 23);
|
||
|
||
dum1 = move (dum3);
|
||
CHECK (dum1.getVal() == 23 );
|
||
CHECK (dum2.getVal() == Dummy::DEFUNCT);
|
||
CHECK (dum3.getVal() == Dummy::DEFUNCT);
|
||
CHECK (Dummy::checksum() == 23 );
|
||
|
||
Dummy::activateCtorFailure (true);
|
||
try {
|
||
Dummy kabooom;
|
||
}
|
||
catch (int v)
|
||
{
|
||
CHECK (0 < v and v <= 100'000'000);
|
||
CHECK (Dummy::checksum() == 23 + v);
|
||
Dummy::checksum() -= v;
|
||
}
|
||
Dummy::activateCtorFailure (false);
|
||
CHECK (dum1.getVal() == 23 );
|
||
CHECK (dum2.getVal() == Dummy::DEFUNCT);
|
||
CHECK (dum3.getVal() == Dummy::DEFUNCT);
|
||
CHECK (Dummy::checksum() == 23 );
|
||
}
|
||
CHECK (Dummy::checksum() == 0);
|
||
}
|
||
|
||
|
||
|
||
/** @test custom allocator to track memory handling
|
||
* - use the base allocator to perform raw memory allocation
|
||
* - demonstrate checksum and diagnostic functions
|
||
* - use a standard adapter to create objects with `unique_ptr`
|
||
* - use as _custom allocator_ within STL containers
|
||
* - can use several distinct pools
|
||
* - swapping containers will move allocators alongside
|
||
*/
|
||
void
|
||
demonstrate_checkAllocator()
|
||
{
|
||
// setup a common event-log for the tracking objects and -allocator
|
||
auto& log = TrackingAllocator::log;
|
||
Tracker::log.clear("Tracking-Allocator-Test");
|
||
Tracker::log.joinInto(log);
|
||
|
||
// everything is safe and sound initially....
|
||
CHECK (TrackingAllocator::checksum() == 0, "Testsuite is broken");
|
||
CHECK (TrackingAllocator::use_count() == 0);
|
||
|
||
{ // Test-1 : raw allocations....
|
||
log.event("Test-1");
|
||
TrackingAllocator allo;
|
||
CHECK (TrackingAllocator::use_count() == 1);
|
||
CHECK (TrackingAllocator::numAlloc() == 0);
|
||
CHECK (TrackingAllocator::numBytes() == 0);
|
||
|
||
void* mem = allo.allocate (55);
|
||
CHECK (TrackingAllocator::numAlloc() == 1);
|
||
CHECK (TrackingAllocator::numBytes() == 55);
|
||
|
||
CHECK (allo.manages (mem));
|
||
CHECK (allo.getSize (mem) == 55); // individual registration recalls the allocation's size
|
||
HashVal memID = allo.getID (mem);
|
||
CHECK (0 < memID);
|
||
CHECK (TrackingAllocator::checksum() == memID*55);
|
||
|
||
allo.deallocate (mem, 42); // note: passing a wrong number here is marked as ERROR in the log
|
||
CHECK (not allo.manages (mem));
|
||
CHECK (allo.getSize (mem) == 0);
|
||
CHECK (allo.getID (mem) == 0);
|
||
CHECK (TrackingAllocator::use_count() == 1);
|
||
CHECK (TrackingAllocator::numAlloc() == 0);
|
||
CHECK (TrackingAllocator::numBytes() == 0);
|
||
}
|
||
CHECK (log.verify("EventLogHeader").on("Tracking-Allocator-Test")
|
||
.before("logJoin")
|
||
.beforeEvent("Test-1")
|
||
.beforeCall("allocate").on(GLOBAL).argPos(0, 55)
|
||
.beforeEvent("error", "SizeMismatch-42-≠-55")
|
||
.beforeCall("deallocate").on(GLOBAL).argPos(0, 42)
|
||
);
|
||
CHECK (TrackingAllocator::checksum() == 0);
|
||
|
||
|
||
{ // Test-2 : attach scoped-ownership-front-End
|
||
log.event("Test-2");
|
||
|
||
allo::OwnUniqueAdapter<TrackingFactory> uniFab;
|
||
CHECK (sizeof(uniFab) == sizeof(TrackingFactory));
|
||
CHECK (sizeof(uniFab) == sizeof(std::shared_ptr<byte>));
|
||
CHECK (not allo::is_Stateless_v<decltype(uniFab)>);
|
||
|
||
CHECK (TrackingAllocator::use_count() == 1);
|
||
CHECK (TrackingAllocator::numAlloc() == 0);
|
||
CHECK (TrackingAllocator::numBytes() == 0);
|
||
{
|
||
log.event("fabricate unique");
|
||
auto uniqueHandle = uniFab.make_unique<Tracker> (77);
|
||
CHECK (uniqueHandle);
|
||
CHECK (uniqueHandle->val == 77);
|
||
CHECK (TrackingAllocator::use_count() == 2);
|
||
CHECK (TrackingAllocator::numAlloc() == 1);
|
||
CHECK (TrackingAllocator::numBytes() == sizeof(Tracker));
|
||
|
||
// all the default tracking allocators indeed attach to the same pool
|
||
TrackingAllocator allo;
|
||
void* mem = uniqueHandle.get();
|
||
CHECK (allo.manages (mem));
|
||
HashVal memID = allo.getID (mem);
|
||
CHECK (0 < memID);
|
||
CHECK (TrackingAllocator::checksum() == memID*sizeof(Tracker));
|
||
|
||
}// and it's gone...
|
||
CHECK (TrackingAllocator::use_count() == 1);
|
||
CHECK (TrackingAllocator::numAlloc() == 0);
|
||
CHECK (TrackingAllocator::numBytes() == 0);
|
||
}
|
||
|
||
CHECK (log.verifyEvent("Test-2")
|
||
.beforeEvent("fabricate unique")
|
||
.beforeCall("allocate").on(GLOBAL).argPos(0, sizeof(Tracker))
|
||
.beforeCall("create-Tracker").on(GLOBAL).arg(77)
|
||
.beforeCall("ctor").on("Tracker").arg(77)
|
||
.beforeCall("destroy-Tracker").on(GLOBAL)
|
||
.beforeCall("dtor").on("Tracker").arg(77)
|
||
.beforeCall("deallocate").on(GLOBAL).argPos(0, sizeof(Tracker))
|
||
);
|
||
CHECK (TrackingAllocator::checksum() == 0);
|
||
|
||
|
||
// define a vector type to use the TrackingAllocator internally
|
||
using TrackVec = std::vector<Tracker, TrackAlloc<Tracker>>;
|
||
|
||
// the following pointers are used later to identify log entries...
|
||
Tracker *t1, *t2, *t3, *t4, *t5, *t6;
|
||
|
||
|
||
{ // Test-3 : use as STL allocator
|
||
log.event("Test-3");
|
||
|
||
log.event("fill with 3 default instances");
|
||
TrackVec vec1(3);
|
||
|
||
int v3 = vec1.back().val;
|
||
|
||
TrackVec vec2;
|
||
log.event("move last instance over into other vector");
|
||
vec2.emplace_back (move (vec1[2]));
|
||
CHECK (vec2.back().val == v3);
|
||
CHECK (vec1.back().val == Tracker::DEFUNCT);
|
||
|
||
// capture object locations for log verification
|
||
t1 = & vec1[0];
|
||
t2 = & vec1[1];
|
||
t3 = & vec1[2];
|
||
t4 = & vec2.front();
|
||
log.event("leave scope");
|
||
}
|
||
CHECK (log.verifyEvent("Test-3")
|
||
.beforeEvent("fill with 3 default instances")
|
||
.beforeCall("allocate").on(GLOBAL)
|
||
.beforeCall("ctor").on(t1)
|
||
.beforeCall("ctor").on(t2)
|
||
.beforeCall("ctor").on(t3)
|
||
.beforeEvent("move last instance over into other vector")
|
||
.beforeCall("allocate").on(GLOBAL)
|
||
.beforeCall("ctor-move").on(t4)
|
||
.beforeEvent("leave scope")
|
||
.beforeCall("dtor").on(t4)
|
||
.beforeCall("deallocate").on(GLOBAL)
|
||
.beforeCall("dtor").on(t1) // (problematic test? order may be implementation dependent)
|
||
.beforeCall("dtor").on(t2)
|
||
.beforeCall("dtor").on(t3)
|
||
.beforeCall("deallocate").on(GLOBAL)
|
||
);
|
||
CHECK (TrackingAllocator::checksum() == 0);
|
||
|
||
|
||
{ // Test-4 : intermingled use of several pools
|
||
log.event("Test-4");
|
||
|
||
TrackAlloc<Tracker> allo1{"POOL-1"};
|
||
TrackAlloc<Tracker> allo2{"POOL-2"};
|
||
CHECK (allo1 != allo2);
|
||
|
||
CHECK (TrackingAllocator::use_count(GLOBAL) == 0);
|
||
CHECK (TrackingAllocator::use_count("POOL-1") == 1); // referred by allo1
|
||
CHECK (TrackingAllocator::use_count("POOL-2") == 1); // referred by allo2
|
||
CHECK (TrackingAllocator::checksum ("POOL-1") == 0);
|
||
CHECK (TrackingAllocator::checksum ("POOL-2") == 0);
|
||
|
||
TrackVec vec1{allo1};
|
||
TrackVec vec2{allo2};
|
||
CHECK (TrackingAllocator::use_count("POOL-1") == 2); // now also referred by the copy in the vectors
|
||
CHECK (TrackingAllocator::use_count("POOL-2") == 2);
|
||
|
||
log.event("reserve space in vectors");
|
||
vec1.reserve(20);
|
||
vec2.reserve(2);
|
||
CHECK (TrackingAllocator::numBytes("POOL-1") == 20*sizeof(Tracker));
|
||
CHECK (TrackingAllocator::numBytes("POOL-2") == 2*sizeof(Tracker));
|
||
|
||
CHECK (TrackingAllocator::numBytes(GLOBAL) == 0);
|
||
CHECK (TrackingAllocator::numBytes() == 0);
|
||
|
||
log.event("create elements in vec1");
|
||
vec1.resize(5);
|
||
vec1.back().val = 11;
|
||
log.event("add element to vec2");
|
||
vec2.push_back (Tracker{22});
|
||
|
||
// capture object locations for log verification later
|
||
t1 = & vec1[0];
|
||
t2 = & vec1[1];
|
||
t3 = & vec1[2];
|
||
t4 = & vec1[3];
|
||
t5 = & vec1[4];
|
||
t6 = & vec2.front();
|
||
|
||
log.event ("swap vectors");
|
||
std::swap (vec1, vec2);
|
||
|
||
CHECK (vec1.back().val == 22);
|
||
CHECK (vec2.back().val == 11);
|
||
CHECK (vec1.size() == 1);
|
||
CHECK (vec2.size() == 5);
|
||
// the allocators were migrated alongside with the swap
|
||
CHECK (TrackingAllocator::numBytes("POOL-1") == 20*sizeof(Tracker));
|
||
CHECK (TrackingAllocator::numBytes("POOL-2") == 2*sizeof(Tracker));
|
||
// this can be demonstrated....
|
||
log.event ("clear the elements migrated to vec2");
|
||
vec2.clear();
|
||
vec2.shrink_to_fit();
|
||
CHECK (vec2.capacity() == 0);
|
||
CHECK (TrackingAllocator::numBytes("POOL-1") == 0 );
|
||
CHECK (TrackingAllocator::numBytes("POOL-2") == 2*sizeof(Tracker));
|
||
CHECK (vec1.size() == 1);
|
||
CHECK (vec1.capacity() == 2); // unaffected
|
||
|
||
log.event ("leave scope");
|
||
}
|
||
|
||
CHECK (log.verifyEvent("Test-4")
|
||
.beforeEvent("reserve space in vectors")
|
||
.beforeCall("allocate").on("POOL-1").argPos(0, 20*sizeof(Tracker))
|
||
.beforeCall("allocate").on("POOL-2").argPos(0, 2*sizeof(Tracker))
|
||
|
||
.beforeEvent("create elements in vec1")
|
||
.beforeCall("ctor").on(t1)
|
||
.beforeCall("ctor").on(t2)
|
||
.beforeCall("ctor").on(t3)
|
||
.beforeCall("ctor").on(t4)
|
||
.beforeCall("ctor").on(t5)
|
||
|
||
.beforeEvent("add element to vec2")
|
||
.beforeCall("ctor").arg(22)
|
||
.beforeCall("ctor-move").on(t6).arg("Track{22}")
|
||
.beforeCall("dtor").arg(Tracker::DEFUNCT)
|
||
|
||
.beforeEvent("swap vectors")
|
||
.beforeEvent("clear the elements migrated to vec2")
|
||
.beforeCall("dtor").on(t1)
|
||
.beforeCall("dtor").on(t2)
|
||
.beforeCall("dtor").on(t3)
|
||
.beforeCall("dtor").on(t4)
|
||
.beforeCall("dtor").on(t5).arg(11)
|
||
.beforeCall("deallocate").on("POOL-1").argPos(0, 20*sizeof(Tracker))
|
||
|
||
.beforeEvent("leave scope")
|
||
.beforeCall("dtor").on(t6).arg(22)
|
||
.beforeCall("deallocate").on("POOL-2").argPos(0, 2*sizeof(Tracker))
|
||
);
|
||
// everything clean and all pools empty again...
|
||
CHECK (TrackingAllocator::use_count(GLOBAL) == 0);
|
||
CHECK (TrackingAllocator::use_count("POOL-1") == 0);
|
||
CHECK (TrackingAllocator::use_count("POOL-2") == 0);
|
||
CHECK (TrackingAllocator::checksum("POOL-1") == 0);
|
||
CHECK (TrackingAllocator::checksum("POOL-2") == 0);
|
||
CHECK (TrackingAllocator::checksum(GLOBAL) == 0);
|
||
|
||
|
||
cout << "____Tracking-Allo-Log_________\n"
|
||
<< util::join(TrackingAllocator::log,"\n")
|
||
<< "\n───╼━━━━━━━━━━━━━━━━━╾────────"<<endl;
|
||
}
|
||
};
|
||
|
||
LAUNCHER (TestTracking_test, "unit common");
|
||
|
||
|
||
}}} // namespace lib::test::test
|
||
|