SaveState

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SaveState#

void YR::SaveState(const int &timeout = DEFAULT_SAVE_LOAD_STATE_TIMEOUT)#

Saves the instance state. 

#include "yr/yr.h"

class Counter {
public:
    Counter() {}
    ~Counter() {}
    explicit Counter(int init) : count(init) {}

    static Counter *FactoryCreate(int init)
    {
        return new Counter(init);
    }

    int Save()
    {
        YR::SaveState();
        return count;
    }

    int Load()
    {
        YR::LoadState();
        return count;
    }

    int Add(int x)
    {
        count += x;
        return count;
    }

    YR_STATE(count)

private:
    int count;
};

YR_INVOKE(Counter::FactoryCreate, &Counter::Add, &Counter::Save, &Counter::Load)

int main()
{
    YR::Config conf;
    conf.mode = YR::Config::Mode::CLUSTER_MODE;
    YR::Init(conf);
    auto creator1 = YR::Instance(Counter::FactoryCreate).Invoke(1);
    auto member1 = creator1.Function(&Counter::Add).Invoke(3);
    auto res1 = *YR::Get(member1);
    printf("res1 is %d\n", res1);  // 4
    auto member2 = creator1.Function(&Counter::Save).Invoke();
    auto res2 = *YR::Get(member2);
    printf("res2 is %d\n", res2);  // 4
    auto member3 = creator1.Function(&Counter::Add).Invoke(3);
    auto res3 = *YR::Get(member3);
    printf("ref3 is %d\n", res3);  // 7
    auto member4 = creator1.Function(&Counter::Load).Invoke();
    auto res4 = *YR::Get(member4);
    printf("res4 is %d\n", res4);  // 7
    auto member5 = creator1.Function(&Counter::Add).Invoke(3);
    auto res5 = *YR::Get(member5);
    printf("res5 is %d\n", res5);  // 7
    YR::Finalize();
    return 0;
}

Parameters:

timeout – Timeout in seconds, default value: 30.

Throws:

Exception –

  1. Local mode does not support SaveState, and an exception “SaveState is not supported in local mode” will be thrown.

  2. Cluster mode only supports this operation in remote code; if called in local code, an exception “SaveState is only

    supported on cloud with posix api” will be thrown.

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