probe process markquery__parse__start

The code you provided appears to be written in a programming language, but it is not clear what specific language or framework it belongs to.

Based on the structure of the code snippet, it seems to be using a method called "mark" on an object named "probe process". This code is likely used for performance monitoring or logging purposes.

The "mark" method is commonly used to add a marker or timestamp to a specific point in a program's execution. In this case, it is marking the start of the process related to query parsing.

Without more context or surrounding code, it is difficult to provide a more detailed explanation