Method, device, and computer program product for data synchronization

An electronic device, comprising:

• a processor;
• and
• a memory coupled to the processor and having instructions stored therein, wherein the instructions, when executed by the processor, perform following actions:
• setting, in response to a state variable being in a first state, a timeout period for an input/output (IO) thread to acquire a read lock, the state variable being used for indicating an execution state of a control flow associated with data synchronization, and the first state indicating that the control flow is executing the data synchronization;
• setting the state variable to a second state in response to not acquiring the read lock within the timeout period, the second state indicating that the control flow has timed out;
• and
• executing the data synchronization by utilizing the IO thread.

A computer program product, the computer program product being tangibly stored on a non-volatile computer-readable medium and comprising machine-executable instructions, wherein the machine-executable instructions, when executed by a machine, cause the machine to perform following actions:

• setting, in response to a state variable being in a first state, a timeout period for an input/output (IO) thread to acquire a read lock, the state variable being used for indicating an execution state of a control flow associated with data synchronization, and the first state indicating that the control flow is executing the data synchronization;
• setting the state variable to a second state in response to not acquiring the read lock within the timeout period, the second state indicating that the control flow has timed out;
• and
• executing the data synchronization by utilizing the IO thread.