kernel mode

In-Depth Analysis of Linux System Call Process

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In-Depth Analysis of Linux System Call Process

Overview of System Calls A system call is the standard interface for user-space programs to interact with the operating system kernel. It provides the only legitimate way for user programs to access core functionalities such as hardware device access, process management, and file system operations. In Linux, system calls implement a secure switch between user … Read more

Assembly Language Techniques: Accurate Time Acquisition and Timing Technologies

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Assembly Language Techniques: Accurate Time Acquisition and Timing Technologies

Principles and Applications of System Time Acquisition Overview of Windows Time System The Windows system provides various methods for time acquisition, suitable for different scenarios: Calendar Time: Used for logging and file timestamps Boot Time: Used for performance analysis and random number seeds High-Precision Timing: Used for microsecond-level precise measurements Kernel Mode Time Acquisition Techniques … Read more