90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
#include "user/demo/SmartPointerDemo.h"
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#include "user/lib/mem/UniquePointer.h"
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// #include <memory>
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void SmartPointerDemo::run() {
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kout.clear();
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kout << "Output is written to log to be able to trace memory allocations/deallocations" << endl;
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// <memory> legit smartpointer
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// {
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// log << INFO << "Allocating new unique_ptr<int>..." << endl;
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// std::unique_ptr<int> ptr1 = std::make_unique<int>(1);
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// std::unique_ptr<int> ptr2 = std::make_unique<int>(2);
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// log << INFO << "Moving..." << endl;
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// ptr2 = std::move(ptr1);
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// log << INFO << "Leaving scope..." << endl;
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// }
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// log << INFO << "Should be deleted by now..." << endl;
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{
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log << INFO << "Allocating new unique_ptr<int>..." << endl;
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bse::unique_ptr<int> ptr = bse::make_unique<int>(1);
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log << INFO << "Leaving scope..." << endl;
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}
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log << INFO << "Should be deleted by now..." << endl;
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{
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log << INFO << "Allocating new unique_ptr<int>..." << endl;
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bse::unique_ptr<int> ptr1 = bse::make_unique<int>(1);
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bse::unique_ptr<int> ptr2;
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log << INFO << "*ptr1 == " << *ptr1 << ", (bool)ptr2 == " << (bool)ptr2 << endl;
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log << INFO << "Moving ptr1 => ptr2 (no allocations should happen)..." << endl;
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ptr2 = std::move(ptr1);
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log << INFO << "(bool)ptr1 == " << (bool)ptr1 << ", *ptr2 == " << *ptr2 << endl;
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log << INFO << "Leaving scope..." << endl;
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}
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log << INFO << "Should be deleted by now..." << endl;
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{
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log << INFO << "Allocating (2) new unique_ptr<int>..." << endl;
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bse::unique_ptr<int> ptr1 = bse::make_unique<int>(1);
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bse::unique_ptr<int> ptr2 = bse::make_unique<int>(1);
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log << INFO << "Moving ptr1 => ptr2 (ptr1 should be freed)..." << endl;
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ptr2 = std::move(ptr1);
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log << INFO << "Leaving scope..." << endl;
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}
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log << INFO << "Should be deleted by now..." << endl;
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// =====================================================================
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{
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log << INFO << "Allocating new unique_ptr<int[]>..." << endl;
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bse::unique_ptr<int[]> ptr = bse::make_unique<int[]>(10);
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ptr[0] = 1;
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log << INFO << "ptr[0] == " << ptr[0] << endl;
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}
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log << INFO << "Should be deleted by now..." << endl;
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{
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log << INFO << "Allocating new unique_ptr<int[10]>..." << endl;
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bse::unique_ptr<int[]> ptr1 = bse::make_unique<int[]>(10);
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bse::unique_ptr<int[]> ptr2;
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log << INFO << "Moving ptr1 => ptr2 (no allocations should happen)..." << endl;
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ptr2 = std::move(ptr1);
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log << INFO << "Leaving scope..." << endl;
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}
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log << INFO << "Should be deleted by now..." << endl;
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{
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log << INFO << "Allocating (2) new unique_ptr<int[10]>..." << endl;
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bse::unique_ptr<int> ptr1 = bse::make_unique<int>(10);
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bse::unique_ptr<int> ptr2 = bse::make_unique<int>(10);
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log << INFO << "Moving ptr1 => ptr2 (ptr1 should be freed)..." << endl;
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ptr2 = std::move(ptr1);
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log << INFO << "Leaving scope..." << endl;
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}
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log << INFO << "Should be deleted by now..." << endl;
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scheduler.exit();
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}
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