private void handleException(Realm realm, StackOverflowError e) {
// Create script exception with stacktrace from stackoverflow-error.
ScriptException exception =
newInternalError(realm.defaultContext(), Messages.Key.StackOverflow);
exception.setStackTrace(e.getStackTrace());
handleException(realm, exception);
}
private void printScriptStackTrace(Realm realm, ScriptException e) {
if (options.scriptStacktrace) {
StringBuilder sb = new StringBuilder();
printScriptFrames(sb, realm, e, 1);
if (sb.length() == 0 && e.getCause() != null) {
printScriptFrames(sb, realm, e.getCause(), 1);
}
console.writer().print(sb.toString());
}
}
private void handleException(Realm realm, OutOfMemoryError e) {
// Try to recover after OOM.
Runtime rt = Runtime.getRuntime();
long beforeGc = rt.freeMemory();
rt.gc();
long afterGc = rt.freeMemory();
if (afterGc > beforeGc && (afterGc - beforeGc) < 50_000_000) {
// Calling gc() cleared less than 50MB, assume unrecoverable OOM and rethrow error.
throw e;
}
// Create script exception with stacktrace from oom-error.
ScriptException exception =
newInternalError(realm.defaultContext(), Messages.Key.OutOfMemoryVM);
exception.setStackTrace(e.getStackTrace());
handleException(realm, exception);
}
private void handleException(Realm realm, ScriptException e) {
String message = formatMessage("uncaught_exception", e.getMessage(realm.defaultContext()));
console.printf("%s%n", message);
printScriptStackTrace(realm, e);
printStackTrace(e);
}