Does Valgrind have an API like Purify/Quantify that lets you disable data recording?

Something like this Purify/Quantify function: quantify_stop_recording_data()

The client program can use callgrind specific client requests to control the callgrind tool (enable and disable profiling), unfortunately the memcheck client requests (for obvious reasons¹) don't allow the same sort of control.

_{¹ memory error checking is dependant on having traced the entire memory state up to the current point in time}