ModelSelectRandom.cpp

#include "Headers.h"
#include "ModelSelectRandom.h"
#include "Rand.h"

CModelSelectRandom::CModelSelectRandom(
    unsigned int    numChannels,
    unsigned int    numLayers,
    unsigned int    numPeers
    ) : CModelSelect(numChannels, numLayers, numPeers)
{
    this->candidates = new CPeer*[this->numPeers];
}

CModelSelectRandom::~CModelSelectRandom()
{
    delete[] this->candidates;
}

CPeer** CModelSelectRandom::Select(__time time, __uint32 channel, __uint32 child)
{
    assert(channel < this->numChannels);
    assert(child < this->numPeers);

    CPeer* peerChild = &this->peers[child];

    for(__uint32 layer = 0; layer < this->numLayers; layer++)
    {
        unsigned int count = 0;

        for(set<CPeer*>::iterator iter = this->index[channel].begin(); iter != this->index[channel].end(); iter++)
            if(!this->IsResult(*iter, layer))
                if(peerChild->VerifyParent(channel, layer, *iter))
                    this->candidates[count++] = *iter;

        this->result[layer] = count ? this->candidates[CRand::Generate(count)] : NULL;
    }

    return this->result;
}

CPeer* CModelSelectRandom::Select(__time time, __uint32 channel, __uint32 layer, __uint32 child)
{
    assert(channel < this->numChannels);
    assert(child < this->numPeers);

    CPeer* peerChild = &this->peers[child];

    unsigned int count = 0;

    for(set<CPeer*>::iterator iter = this->index[channel].begin(); iter != this->index[channel].end(); iter++)
        if(!this->IsResult(*iter, layer))
            if(peerChild->VerifyParent(channel, layer, *iter))
                this->candidates[count++] = *iter;

    return count ? this->candidates[CRand::Generate(count)] : NULL;
}