Method for implementing function jump, apparatus, and computer storage medium

A computer system comprising:

• a memory configured to store a computer program;
• and
• a processor coupled to the memory, wherein the computer program causes the processor to be configured to:
• receive a call instruction for a first function;
• confirm that a first address of the first function is stored in a first data structure, wherein the first data structure stores addresses of a plurality of functions including the first address;
• search, based on the first address, a second data structure for a second address of a first patch function of the first function, wherein the first patch function is registered to replace the first function, wherein the second data structure stores correspondences between the addresses and patch functions of the functions including the first patch function, wherein each of the functions corresponds to a second struct, wherein a third address of a second patch function of each of the functions is stored in the second struct, and wherein a second hash table is configured to store correspondences between the addresses and a plurality of second structs of the functions;
• jump, based on the second address, from the first function to the first patch function;
• execute, in response to the call instruction, the first patch function;
• search, in response to receive a rollback instruction for the first function and based on the second hash table and the first address, for the second address in the second struct corresponding to the first function, wherein the rollback instruction instructs to undo replacement of the first function with the first patch function;
• and
• delete the second address.

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

• receive a call instruction for a first function;
• confirm that a first address of the first function is stored in a first data structure, wherein the first data structure stores addresses of a plurality of functions including the first address;
• search, based on the first address, a second data structure for a second address of a first patch function of the first function, wherein the first patch function is registered to replace the first function, wherein the second data structure stores correspondences between the addresses and patch functions of the functions including the first patch function, wherein each of the functions corresponds to a second struct, wherein a third address of a second patch function of each of the functions is stored in the second struct, and wherein a second hash table is configured to store correspondences between the addresses and a plurality of second structs of the functions;
• jump, based on the second address, from the first function to the first patch function;
• execute, in response to the call instruction, the first patch function;
• search, in response to receive a rollback instruction for the first function and based on the second hash table and the first address, for the second address in the second struct corresponding to the first function, wherein the rollback instruction instructs to undo replacement of the first function with the first patch function;
• and
• delete the second address.