Examples with IdentityHashMap com.alibaba.fastjson.util.IdentityHashMap used on opensource projects

Example 1 with IdentityHashMap

use of com.alibaba.fastjson.util.IdentityHashMap in project fastjson by alibaba.

the class Issue1407 method test_for_issue.

public void test_for_issue() throws Exception {
    final String key = "k";
    final IdentityHashMap map = new IdentityHashMap(2);
    final Random ran = new Random();
    new Thread() {

        public void run() {
            while (true) {
                String kk = (key + ran.nextInt(2));
                if (map.get(kk) != null) {
                    // System.out.println("\tskip_a " + kk);
                    continue;
                }
                // synchronized(map) {
                map.put(kk, kk);
                System.out.println("\tput_a " + kk);
                // }
                Object val = map.get(kk);
                if (val == null) {
                    System.err.println("err_a : " + kk);
                }
            }
        }
    }.start();
    new Thread() {

        public void run() {
            while (true) {
                String kk = (key + ran.nextInt(2));
                // synchronized(map) {
                if (map.get(kk) != null) {
                    // System.out.println("\tskip_b " + kk);
                    continue;
                }
                map.put(kk, kk);
                System.out.println("\tput_b " + kk);
                // }
                Object val = map.get(kk);
                if (val == null) {
                    System.err.println("err_b : " + kk);
                }
            }
        }
    }.start();
    Thread.sleep(1000 * 1000);
}