Lines Matching refs:head_
78 if (head_ + len > bufSize_) {
80 int ret = memcpy_s(dest, len, buffer_ + head_, bufSize_ - head_);
84 ret = memcpy_s(dest + bufSize_ - head_, len + head_ - bufSize_, buffer_, len + head_ - bufSize_);
89 if (memcpy_s(dest, len, buffer_ + head_, len) != EOK) {
106 res = head_ - tail_;
115 res = tail_ - head_;
135 /* head_ = tail_ mean empty, the buffer can never be full */
136 std::size_t head_ {0}; // first readable byte