Interrupt handling method, computer system, and non-transitory storage medium that resumes waiting threads in response to interrupt signals from I/O devices

A computer system including a memory storing instructions and having a user space and a kernel space, and a computing device coupled with the memory, the computing device comprising a processor which executes the instructions which cause the computing device to:

• store an interrupt number and corresponding interrupt service routine in the memory, wherein the interrupt number corresponds to an input/output device coupled with the computer system;
• determine a user space input/output device number on a basis of the interrupt number, wherein the user space input/output device number corresponds to the input/output device;
• determine a memory location of the input/output device on the basis of the determined user space input/output device number;
• initiate the I/O device for reading, on the basis of the determined memory location;
• create a thread corresponding to the input/output device;
• place the thread in a wait state to receive an interrupt signal from the input/output device, wherein the interrupt signal corresponds to an interrupt generated by the input/output device;
• receive the interrupt signal from the input/output device;
• execute the interrupt service routine in the kernel space in response to receiving the interrupt signal;
• resume the thread from wait state on the basis of interrupt service routine;
• and
• execute a user-defined function corresponding to the interrupt signal, in the user space.

A non-transitory storage medium storing a program for causing a computer system including a computing device to execute an interrupt handling program on a second platform, the interrupt handling program being created on a first platform, wherein the program causes the computing device to perform the operations of:

• storing an interrupt number and corresponding interrupt service routine in a memory coupled with the computing device, wherein the interrupt number corresponds to an input/output device coupled with the computer system;
• determining a user space input/output device number on a basis of the interrupt number, wherein the user space input/output device number corresponds to the input/output device;
• determining a memory location of the input/output device on the basis of the determined user space input/output device number;
• initiating the input/output device for reading, on the basis of the determined memory location;
• creating a thread corresponding to the input/output device;
• placing the thread in a wait state for receiving an interrupt signal from the input/output device, wherein the interrupt signal corresponds to an interrupt generated by the input/output device;
• receiving the interrupt signal from the input/output device;
• executing the interrupt service routine in a kernel space within the memory in response to receiving the interrupt signal;
• resuming the thread from wait state on the basis of the interrupt service routine;
• and
• executing a user-defined function corresponding to the interrupt signal, in a user space within the memory.