COMPUTER SYSTEM FOR PERMITTING EXCLUSIVE ACCESS TO SHARED DATA, METHOD FOR THE COMPUTER SYSTEM, AND COMPUTER READABLE RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a mechanism for stopping only a thread in which a fault is caused or a fault may be caused from another thread without stopping the whole system having a locked thread.

SOLUTION: A computer system stores a program including a code for a critical section, wherein the critical section includes an instruction for writing or reading a value to/from a shared data area in a memory. The instruction acquires lock for the critical section before the start of an initial instruction in the critical section, writes a value in a thread local area in the memory instead of writing the value in the shared data area in response to a writing instruction to the shared data area, writes the value written in the thread local area in the shared data area in response to the end of a final instruction in the critical section, and unlocks the critical section.

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