Function IsBlocked

library/cpp/coroutine/engine/network.cpp:16–18

namespace NCoro {
    namespace {
        bool IsBlocked(int lasterr) noexcept {
            return lasterr == EAGAIN || lasterr == EWOULDBLOCK;
        }

        ssize_t DoReadVector(SOCKET fd, TContIOVector* vec) noexcept {
            return readv(fd, (const iovec*) vec->Parts(), Min(IOV_MAX, (int) vec->Count()));