Interprocess communication method and interprocess communications system

A computer system, comprising:

• a memory configured to store instructions;
• and
• a processor coupled to the memory, wherein the instructions cause the processor to be configured to:
• make a first determination that a data length of communication data of a first process is less than a size of a first memory space, wherein the communication data is for data exchange between the first process and a second process;
• allocate the first memory space to the first process for access;
• store, in response to the first determination, communication data of the first process in the first memory space;
• allocate a virtual memory space to the second process to enable the second process to access the communication data;
• map a physical memory page in the first memory space to the virtual memory space;
• and
• store, in response to a second determination, the communication data as a data file, wherein the second process accesses the communication data using metadata of the data file when the data length of the communication data is greater than the size of the first memory space.

A computer program product comprising computer-executable instructions for storage on a non-transitory computer readable storage medium that, when executed by a processor, cause a computer to:

• make a first determination that a data length of communication data of a first process is less than a size of a first memory space, wherein the communication data is for data exchange between the first process and a second process;
• allocate the first memory space to the first process for access;
• store, in response to the first determination, communication data of the first process in the first memory space;
• allocate a virtual memory space to the second process to enable the second process to access the communication data;
• map a physical memory page in the first memory space to the virtual memory space;
• and
• store, in response to a second determination, the communication data as a data file wherein the second process accesses the communication data using metadata of the data file when the data length of the communication data is greater than the size of the first memory space.