HnxGC - an accurate, pauseless & deterministic garbage collector

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Demo & Tutorial - Resurrection

In the OnReclaim routine of an object that is being reclaimed by the HnxGC, you can re-reference the object and resurrect it to alive.

Note - the "m_bResurrected" flag is used to avoid repeatly resurrect the object

#include <stdio.h>
#include <string.h>

#include "hnxGC/hnxGC.h"
using namespace harnix;

class CFoo;

CLockedPtr<CFoo> g_pDying;

class CFoo {
public:
    int                    m_nData;
    bool                   m_bResurrected;
    CMemberPtr<CFoo>       m_pNext;

    CFoo() {
        m_nData = 777;
        m_bResurrected = false;
    }
    ~CFoo() {
        printf("Destructing CFoo[%p]\n", this);
    }
    HNXGC_TRAVERSE(CFoo) {
        HNXGC_TRAVERSE_PTR(m_pNext);
    }
    HNXGC_ONRECLAIM() {
        if (!m_bResurrected) {
            m_bResurrected = true;
            g_pDying = InteriorPointer(this, _PouchPtr(this));
            g_pDying->m_pNext = nullptr;
            printf("OnReclaim: resurrect %p\n", this);
            HNXGC_RESURRECT();
        }
    }
};

int main()
{
    CLockedPtr<CFoo> p = gcnew CFoo;
    p->m_pNext = p;
    p = nullptr;

    HNXGC_COLLECT();
    printf("main(): %u\n", g_pDying->m_nData);
    return 0;
}

output:
OnReclaim: resurrect 00382148
main(): 777
Destructing CFoo[00382148]