C++ (Cpp) FIND_NUM_BYTES示例

示例#1

文件： bitset.c 项目： coreyjrobins/Bittorrent-Client

void *Create_Bit_Set(uint_t totalBits) {
    ulong_t numBytes;
    void *bitSet;

    numBytes = FIND_NUM_BYTES(totalBits);

    bitSet = malloc(numBytes);
    if (bitSet != 0)
        memset(bitSet, '\0', numBytes);

    return bitSet;
}

示例#2

文件： bitset.c 项目： coreyjrobins/Bittorrent-Client

int Find_First_Free_Bit(void *bitSet, ulong_t totalBits) {
    uint_t numBytes = FIND_NUM_BYTES(totalBits);
    ulong_t offset;
    unsigned char *bits = (unsigned char *) bitSet;

    for (offset = 0; offset < numBytes; ++offset) {
        if (bits[offset] != 0xff) {
            uint_t bit;
            for (bit = 0; bit < 8; ++bit) {
              if ((bits[offset] & (1 << (7-bit))) == 0)
                    return (offset * 8) + bit;
            }
        }
    }

    return -1;
}

示例#3

文件： bitset.c 项目： Danielhu229/geekos-task

int Find_First_Free_Bit(void *bitSet, ulong_t totalBits) {
    uint_t numBytes = FIND_NUM_BYTES(totalBits);
    ulong_t offset;
    uchar_t *bits = (uchar_t *) bitSet;

    for(offset = 0; offset < numBytes; ++offset) {
        if(bits[offset] != 0xff) {
            uint_t bit;
            for(bit = 0; bit < 8; ++bit) {
                if((bits[offset] & (1 << bit)) == 0)
                    return (offset * 8) + bit;
            }
#ifdef GEEKOS
            /* kassert only defined properly when running in geekos. */
            KASSERT(false);
#endif
        }
    }

    return -1;
}