MyController.java 文件源码

@CrossOrigin
@RequestMapping(method = RequestMethod.GET, value = "/memory", produces = "text/plain")
public String memory() {
    System.out.println("Starting to allocate memory...");
    Runtime rt = Runtime.getRuntime();
    StringBuilder sb = new StringBuilder();
    long maxMemory = rt.maxMemory();
    long usedMemory = 0;
    while (((float) usedMemory / maxMemory) < 0.80) {
        sb.append(System.nanoTime() + sb.toString());
        usedMemory = rt.totalMemory();
    }
    String msg = "Allocated more than 80% (" + humanReadableByteCount(usedMemory, false) + ") of the max allowed JVM memory size ("
            + humanReadableByteCount(maxMemory, false) + ")";
    System.out.println(msg);
    return msg;
}