/**
* Time the given function multiple times.
*
* @param repeat the number of times to repeat the function call; must be positive
* @param runnable the function to call; may not be null
*/
public default void time(int repeat, Runnable runnable) {
for (int i = 0; i != repeat; ++i) {
Stopwatch sw = create().start();
try {
runnable.run();
} finally {
sw.stop();
}
}
}
/**
* Time the given function.
*
* @param runnable the function that is to be executed; may not be null
* @return the result of the operation
*/
public default <T> T time(Callable<T> runnable) {
Stopwatch sw = create().start();
try {
return runnable.call();
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
sw.stop();
}
}
/**
* Time the given function multiple times.
*
* @param repeat the number of times to repeat the function call; must be positive
* @param runnable the function that is to be executed a number of times; may not be null
* @param cleanup the function that is to be called after each time call to the runnable
* function, and not included in the time measurements; may be null
* @throws Exception the exception thrown by the runnable function
*/
public default <T> void time(int repeat, Callable<T> runnable, Consumer<T> cleanup)
throws Exception {
for (int i = 0; i != repeat; ++i) {
T result = null;
Stopwatch sw = create().start();
try {
result = runnable.call();
} finally {
sw.stop();
if (cleanup != null) {
cleanup.accept(result);
}
}
}
}