CtxWithProcessInfo .

CtxWithSQLAndPlanDigest wrap the ctx with sql digest and plan digest.

CtxWithSQLDigest wrap the ctx with sql digest.

NewSQLCPUCollector create a SQLCPUCollector.

SQLCPUCollector uses to consume cpu profile from globalCPUProfiler, then parse the SQL CPU usage from the cpu profile data.

SQLCPUTimeRecord represents a single record of how much cpu time a sql plan consumes in one second.

Collector uses to collect SQL execution cpu time.

ProcessCPUTimeUpdater Introduce this interface due to the dependency cycle.