/** Adds an {@link AbstractInstrumentNode} to this chain. */
@TruffleBoundary
void addInstrument(ProbeInstrument instrument) {
assert instrument.getProbe() == probe;
// The existing chain of nodes may be empty
// Attach the modified chain.
firstInstrumentNode = insert(instrument.addToChain(firstInstrumentNode));
}
/**
* Removes an instrument from this chain of instruments.
*
* @throws RuntimeException if no matching instrument is found,
*/
@TruffleBoundary
void removeInstrument(ProbeInstrument instrument) {
assert instrument.getProbe() == probe;
final AbstractInstrumentNode modifiedChain = instrument.removeFromChain(firstInstrumentNode);
if (modifiedChain == null) {
firstInstrumentNode = null;
} else {
firstInstrumentNode = insert(modifiedChain);
}
}