| 摘要 |
PURPOSE:To improve the processing efficiency, by reserving a number of memory buffers matched to a maximum user data length when the first data is received if the data length is shorter than an allowable receiving data length in the distributed data exchange system. CONSTITUTION:If data received by a subsystem is shorter than a maximum user data length of a terminating terminal, a number of memory buffers matched to the maximum user data length are reserved and acquired in a reserved memory buffer M4 when the first data is received, and data is transmitted to the terminating terminal after all of succeeding data are received. When memory buffers corresponding to an allowable receiving data length cannot be acquired, data cannot be received. Consequently, a lack of memory buffers during data reception is prevented, and the data holding control such as ineffective suspension of data or request of retransmission to another subsystem is unnecessary. |
