Method initializeBloomFilter

CLKeySearchDevice/CLKeySearchDevice.cpp:98–142

}

void CLKeySearchDevice::initializeBloomFilter(const std::vector<struct hash160> &targets, uint64_t mask)
{
    size_t sizeInWords = (mask + 1) / 32;

    uint32_t *buf = new uint32_t[sizeInWords];

    for(size_t i = 0; i < sizeInWords; i++) {
        buf[i] = 0;
    }

    for(unsigned int k = 0; k < targets.size(); k++) {

        unsigned int hash[5];
        unsigned int h5 = 0;

        uint64_t idx[5];

        undoRMD160FinalRound(targets[k].h, hash);

        for(int i = 0; i < 5; i++) {
            h5 += hash[i];
        }

        idx[0] = ((hash[0] << 6) | (h5 & 0x3f)) & mask;
        idx[1] = ((hash[1] << 6) | ((h5 >> 6) & 0x3f)) & mask;
        idx[2] = ((hash[2] << 6) | ((h5 >> 12) & 0x3f)) & mask;
        idx[3] = ((hash[3] << 6) | ((h5 >> 18) & 0x3f)) & mask;
        idx[4] = ((hash[4] << 6) | ((h5 >> 24) & 0x3f)) & mask;

        for(int i = 0; i < 5; i++) {
            uint64_t j = idx[i];
            buf[j / 32] |= 1 << (j % 32);
        }
    }


    _targetMemSize = sizeInWords * sizeof(uint32_t);

    _deviceTargetList.mask = mask;
    _deviceTargetList.ptr = _clContext->malloc(sizeInWords * sizeof(uint32_t));
    _deviceTargetList.size = targets.size();
    _clContext->copyHostToDevice(buf, _deviceTargetList.ptr, sizeInWords * sizeof(uint32_t));

    delete[] buf;
}

void CLKeySearchDevice::allocateBuffers()
{