Method and apparatus for converting a synchronized method into a non-synchronized method

A computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method for converting a synchronized method into a non-synchronized method, the method comprising:

• receiving a code module that includes the synchronized method, wherein the synchronized method automatically performs a lock operation before executing the method body and automatically performs an unlock operation after executing the method body, whereby at most one thread at a time can execute the method body;
• changing the synchronized method into a non-synchronized method that does not automatically perform lock and unlock operations;
• inserting an explicit lock instruction at the beginning of the method body;
• and
• inserting an explicit unlock instruction at the end of the method body.

An apparatus that converts a synchronized method into a non-synchronized method, comprising:

• a receiving mechanism configured to receive a code module that includes the synchronized method, wherein the synchronized method automatically performs a lock operation before executing the method body and automatically performs an unlock operation after executing the method body, whereby at most one thread at a time can execute the method body;
• and
• a conversion mechanism configured to,
• change the synchronized method into a non-synchronized method that does not automatically perform lock and unlock operations,
• insert an explicit lock instruction at the beginning of the method body, and to
• insert an explicit unlock instruction at the end of the method body.